1cfdda9d7SSteve Wise /* 29eccfe10SSteve Wise * Copyright (c) 2009-2014 Chelsio, Inc. All rights reserved. 3cfdda9d7SSteve Wise * 4cfdda9d7SSteve Wise * This software is available to you under a choice of one of two 5cfdda9d7SSteve Wise * licenses. You may choose to be licensed under the terms of the GNU 6cfdda9d7SSteve Wise * General Public License (GPL) Version 2, available from the file 7cfdda9d7SSteve Wise * COPYING in the main directory of this source tree, or the 8cfdda9d7SSteve Wise * OpenIB.org BSD license below: 9cfdda9d7SSteve Wise * 10cfdda9d7SSteve Wise * Redistribution and use in source and binary forms, with or 11cfdda9d7SSteve Wise * without modification, are permitted provided that the following 12cfdda9d7SSteve Wise * conditions are met: 13cfdda9d7SSteve Wise * 14cfdda9d7SSteve Wise * - Redistributions of source code must retain the above 15cfdda9d7SSteve Wise * copyright notice, this list of conditions and the following 16cfdda9d7SSteve Wise * disclaimer. 17cfdda9d7SSteve Wise * 18cfdda9d7SSteve Wise * - Redistributions in binary form must reproduce the above 19cfdda9d7SSteve Wise * copyright notice, this list of conditions and the following 20cfdda9d7SSteve Wise * disclaimer in the documentation and/or other materials 21cfdda9d7SSteve Wise * provided with the distribution. 22cfdda9d7SSteve Wise * 23cfdda9d7SSteve Wise * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24cfdda9d7SSteve Wise * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25cfdda9d7SSteve Wise * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26cfdda9d7SSteve Wise * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27cfdda9d7SSteve Wise * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28cfdda9d7SSteve Wise * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29cfdda9d7SSteve Wise * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30cfdda9d7SSteve Wise * SOFTWARE. 31cfdda9d7SSteve Wise */ 32cfdda9d7SSteve Wise #include <linux/module.h> 33cfdda9d7SSteve Wise #include <linux/list.h> 34cfdda9d7SSteve Wise #include <linux/workqueue.h> 35cfdda9d7SSteve Wise #include <linux/skbuff.h> 36cfdda9d7SSteve Wise #include <linux/timer.h> 37cfdda9d7SSteve Wise #include <linux/notifier.h> 38cfdda9d7SSteve Wise #include <linux/inetdevice.h> 39cfdda9d7SSteve Wise #include <linux/ip.h> 40cfdda9d7SSteve Wise #include <linux/tcp.h> 411cab775cSVipul Pandya #include <linux/if_vlan.h> 42cfdda9d7SSteve Wise 43cfdda9d7SSteve Wise #include <net/neighbour.h> 44cfdda9d7SSteve Wise #include <net/netevent.h> 45cfdda9d7SSteve Wise #include <net/route.h> 461cab775cSVipul Pandya #include <net/tcp.h> 47830662f6SVipul Pandya #include <net/ip6_route.h> 48830662f6SVipul Pandya #include <net/addrconf.h> 49cfdda9d7SSteve Wise 5011b8e22dSSteve Wise #include <rdma/ib_addr.h> 5111b8e22dSSteve Wise 5285e42b04SVarun Prakash #include <libcxgb_cm.h> 53cfdda9d7SSteve Wise #include "iw_cxgb4.h" 5484cc6ac6SHariprasad S #include "clip_tbl.h" 55cfdda9d7SSteve Wise 56cfdda9d7SSteve Wise static char *states[] = { 57cfdda9d7SSteve Wise "idle", 58cfdda9d7SSteve Wise "listen", 59cfdda9d7SSteve Wise "connecting", 60cfdda9d7SSteve Wise "mpa_wait_req", 61cfdda9d7SSteve Wise "mpa_req_sent", 62cfdda9d7SSteve Wise "mpa_req_rcvd", 63cfdda9d7SSteve Wise "mpa_rep_sent", 64cfdda9d7SSteve Wise "fpdu_mode", 65cfdda9d7SSteve Wise "aborting", 66cfdda9d7SSteve Wise "closing", 67cfdda9d7SSteve Wise "moribund", 68cfdda9d7SSteve Wise "dead", 69cfdda9d7SSteve Wise NULL, 70cfdda9d7SSteve Wise }; 71cfdda9d7SSteve Wise 725be78ee9SVipul Pandya static int nocong; 735be78ee9SVipul Pandya module_param(nocong, int, 0644); 745be78ee9SVipul Pandya MODULE_PARM_DESC(nocong, "Turn of congestion control (default=0)"); 755be78ee9SVipul Pandya 765be78ee9SVipul Pandya static int enable_ecn; 775be78ee9SVipul Pandya module_param(enable_ecn, int, 0644); 785be78ee9SVipul Pandya MODULE_PARM_DESC(enable_ecn, "Enable ECN (default=0/disabled)"); 795be78ee9SVipul Pandya 80b52fe09eSSteve Wise static int dack_mode = 1; 81ba6d3925SSteve Wise module_param(dack_mode, int, 0644); 82b52fe09eSSteve Wise MODULE_PARM_DESC(dack_mode, "Delayed ack mode (default=1)"); 83ba6d3925SSteve Wise 844c2c5763SHariprasad Shenai uint c4iw_max_read_depth = 32; 85be4c9badSRoland Dreier module_param(c4iw_max_read_depth, int, 0644); 864c2c5763SHariprasad Shenai MODULE_PARM_DESC(c4iw_max_read_depth, 874c2c5763SHariprasad Shenai "Per-connection max ORD/IRD (default=32)"); 88be4c9badSRoland Dreier 89cfdda9d7SSteve Wise static int enable_tcp_timestamps; 90cfdda9d7SSteve Wise module_param(enable_tcp_timestamps, int, 0644); 91cfdda9d7SSteve Wise MODULE_PARM_DESC(enable_tcp_timestamps, "Enable tcp timestamps (default=0)"); 92cfdda9d7SSteve Wise 93cfdda9d7SSteve Wise static int enable_tcp_sack; 94cfdda9d7SSteve Wise module_param(enable_tcp_sack, int, 0644); 95cfdda9d7SSteve Wise MODULE_PARM_DESC(enable_tcp_sack, "Enable tcp SACK (default=0)"); 96cfdda9d7SSteve Wise 97cfdda9d7SSteve Wise static int enable_tcp_window_scaling = 1; 98cfdda9d7SSteve Wise module_param(enable_tcp_window_scaling, int, 0644); 99cfdda9d7SSteve Wise MODULE_PARM_DESC(enable_tcp_window_scaling, 100cfdda9d7SSteve Wise "Enable tcp window scaling (default=1)"); 101cfdda9d7SSteve Wise 102cfdda9d7SSteve Wise int c4iw_debug; 103cfdda9d7SSteve Wise module_param(c4iw_debug, int, 0644); 104cfdda9d7SSteve Wise MODULE_PARM_DESC(c4iw_debug, "Enable debug logging (default=0)"); 105cfdda9d7SSteve Wise 106df2d5130SSteve Wise static int peer2peer = 1; 107cfdda9d7SSteve Wise module_param(peer2peer, int, 0644); 108df2d5130SSteve Wise MODULE_PARM_DESC(peer2peer, "Support peer2peer ULPs (default=1)"); 109cfdda9d7SSteve Wise 110cfdda9d7SSteve Wise static int p2p_type = FW_RI_INIT_P2PTYPE_READ_REQ; 111cfdda9d7SSteve Wise module_param(p2p_type, int, 0644); 112cfdda9d7SSteve Wise MODULE_PARM_DESC(p2p_type, "RDMAP opcode to use for the RTR message: " 113cfdda9d7SSteve Wise "1=RDMA_READ 0=RDMA_WRITE (default 1)"); 114cfdda9d7SSteve Wise 115cfdda9d7SSteve Wise static int ep_timeout_secs = 60; 116cfdda9d7SSteve Wise module_param(ep_timeout_secs, int, 0644); 117cfdda9d7SSteve Wise MODULE_PARM_DESC(ep_timeout_secs, "CM Endpoint operation timeout " 118cfdda9d7SSteve Wise "in seconds (default=60)"); 119cfdda9d7SSteve Wise 120b8ac3112SHariprasad S static int mpa_rev = 2; 121cfdda9d7SSteve Wise module_param(mpa_rev, int, 0644); 122cfdda9d7SSteve Wise MODULE_PARM_DESC(mpa_rev, "MPA Revision, 0 supports amso1100, " 123ccd2c30bSHariprasad S "1 is RFC5044 spec compliant, 2 is IETF MPA Peer Connect Draft" 124b8ac3112SHariprasad S " compliant (default=2)"); 125cfdda9d7SSteve Wise 126cfdda9d7SSteve Wise static int markers_enabled; 127cfdda9d7SSteve Wise module_param(markers_enabled, int, 0644); 128cfdda9d7SSteve Wise MODULE_PARM_DESC(markers_enabled, "Enable MPA MARKERS (default(0)=disabled)"); 129cfdda9d7SSteve Wise 130cfdda9d7SSteve Wise static int crc_enabled = 1; 131cfdda9d7SSteve Wise module_param(crc_enabled, int, 0644); 132cfdda9d7SSteve Wise MODULE_PARM_DESC(crc_enabled, "Enable MPA CRC (default(1)=enabled)"); 133cfdda9d7SSteve Wise 134cfdda9d7SSteve Wise static int rcv_win = 256 * 1024; 135cfdda9d7SSteve Wise module_param(rcv_win, int, 0644); 136cfdda9d7SSteve Wise MODULE_PARM_DESC(rcv_win, "TCP receive window in bytes (default=256KB)"); 137cfdda9d7SSteve Wise 13898ae68b7SSteve Wise static int snd_win = 128 * 1024; 139cfdda9d7SSteve Wise module_param(snd_win, int, 0644); 14098ae68b7SSteve Wise MODULE_PARM_DESC(snd_win, "TCP send window in bytes (default=128KB)"); 141cfdda9d7SSteve Wise 142cfdda9d7SSteve Wise static struct workqueue_struct *workq; 143cfdda9d7SSteve Wise 144cfdda9d7SSteve Wise static struct sk_buff_head rxq; 145cfdda9d7SSteve Wise 146cfdda9d7SSteve Wise static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp); 147cfdda9d7SSteve Wise static void ep_timeout(unsigned long arg); 148cfdda9d7SSteve Wise static void connect_reply_upcall(struct c4iw_ep *ep, int status); 1499dec900cSHariprasad S static int sched(struct c4iw_dev *dev, struct sk_buff *skb); 150cfdda9d7SSteve Wise 151be4c9badSRoland Dreier static LIST_HEAD(timeout_list); 152be4c9badSRoland Dreier static spinlock_t timeout_lock; 153be4c9badSRoland Dreier 1549ca6f7cfSHariprasad S static void deref_cm_id(struct c4iw_ep_common *epc) 1559ca6f7cfSHariprasad S { 1569ca6f7cfSHariprasad S epc->cm_id->rem_ref(epc->cm_id); 1579ca6f7cfSHariprasad S epc->cm_id = NULL; 1589ca6f7cfSHariprasad S set_bit(CM_ID_DEREFED, &epc->history); 1599ca6f7cfSHariprasad S } 1609ca6f7cfSHariprasad S 1619ca6f7cfSHariprasad S static void ref_cm_id(struct c4iw_ep_common *epc) 1629ca6f7cfSHariprasad S { 1639ca6f7cfSHariprasad S set_bit(CM_ID_REFED, &epc->history); 1649ca6f7cfSHariprasad S epc->cm_id->add_ref(epc->cm_id); 1659ca6f7cfSHariprasad S } 1669ca6f7cfSHariprasad S 167325abeadSVipul Pandya static void deref_qp(struct c4iw_ep *ep) 168325abeadSVipul Pandya { 169325abeadSVipul Pandya c4iw_qp_rem_ref(&ep->com.qp->ibqp); 170325abeadSVipul Pandya clear_bit(QP_REFERENCED, &ep->com.flags); 1719ca6f7cfSHariprasad S set_bit(QP_DEREFED, &ep->com.history); 172325abeadSVipul Pandya } 173325abeadSVipul Pandya 174325abeadSVipul Pandya static void ref_qp(struct c4iw_ep *ep) 175325abeadSVipul Pandya { 176325abeadSVipul Pandya set_bit(QP_REFERENCED, &ep->com.flags); 1779ca6f7cfSHariprasad S set_bit(QP_REFED, &ep->com.history); 178325abeadSVipul Pandya c4iw_qp_add_ref(&ep->com.qp->ibqp); 179325abeadSVipul Pandya } 180325abeadSVipul Pandya 181cfdda9d7SSteve Wise static void start_ep_timer(struct c4iw_ep *ep) 182cfdda9d7SSteve Wise { 183cfdda9d7SSteve Wise PDBG("%s ep %p\n", __func__, ep); 184cfdda9d7SSteve Wise if (timer_pending(&ep->timer)) { 1851ec779ccSVipul Pandya pr_err("%s timer already started! ep %p\n", 1861ec779ccSVipul Pandya __func__, ep); 1871ec779ccSVipul Pandya return; 1881ec779ccSVipul Pandya } 1891ec779ccSVipul Pandya clear_bit(TIMEOUT, &ep->com.flags); 190cfdda9d7SSteve Wise c4iw_get_ep(&ep->com); 191cfdda9d7SSteve Wise ep->timer.expires = jiffies + ep_timeout_secs * HZ; 192cfdda9d7SSteve Wise ep->timer.data = (unsigned long)ep; 193cfdda9d7SSteve Wise ep->timer.function = ep_timeout; 194cfdda9d7SSteve Wise add_timer(&ep->timer); 195cfdda9d7SSteve Wise } 196cfdda9d7SSteve Wise 197b33bd0cbSSteve Wise static int stop_ep_timer(struct c4iw_ep *ep) 198cfdda9d7SSteve Wise { 1991ec779ccSVipul Pandya PDBG("%s ep %p stopping\n", __func__, ep); 200cfdda9d7SSteve Wise del_timer_sync(&ep->timer); 201b33bd0cbSSteve Wise if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { 202cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 203b33bd0cbSSteve Wise return 0; 204b33bd0cbSSteve Wise } 205b33bd0cbSSteve Wise return 1; 206cfdda9d7SSteve Wise } 207cfdda9d7SSteve Wise 208cfdda9d7SSteve Wise static int c4iw_l2t_send(struct c4iw_rdev *rdev, struct sk_buff *skb, 209cfdda9d7SSteve Wise struct l2t_entry *l2e) 210cfdda9d7SSteve Wise { 211cfdda9d7SSteve Wise int error = 0; 212cfdda9d7SSteve Wise 213cfdda9d7SSteve Wise if (c4iw_fatal_error(rdev)) { 214cfdda9d7SSteve Wise kfree_skb(skb); 215cfdda9d7SSteve Wise PDBG("%s - device in error state - dropping\n", __func__); 216cfdda9d7SSteve Wise return -EIO; 217cfdda9d7SSteve Wise } 218cfdda9d7SSteve Wise error = cxgb4_l2t_send(rdev->lldi.ports[0], skb, l2e); 219cfdda9d7SSteve Wise if (error < 0) 220cfdda9d7SSteve Wise kfree_skb(skb); 221caa6c9f2SHariprasad S else if (error == NET_XMIT_DROP) 222caa6c9f2SHariprasad S return -ENOMEM; 22374594861SSteve Wise return error < 0 ? error : 0; 224cfdda9d7SSteve Wise } 225cfdda9d7SSteve Wise 226cfdda9d7SSteve Wise int c4iw_ofld_send(struct c4iw_rdev *rdev, struct sk_buff *skb) 227cfdda9d7SSteve Wise { 228cfdda9d7SSteve Wise int error = 0; 229cfdda9d7SSteve Wise 230cfdda9d7SSteve Wise if (c4iw_fatal_error(rdev)) { 231cfdda9d7SSteve Wise kfree_skb(skb); 232cfdda9d7SSteve Wise PDBG("%s - device in error state - dropping\n", __func__); 233cfdda9d7SSteve Wise return -EIO; 234cfdda9d7SSteve Wise } 235cfdda9d7SSteve Wise error = cxgb4_ofld_send(rdev->lldi.ports[0], skb); 236cfdda9d7SSteve Wise if (error < 0) 237cfdda9d7SSteve Wise kfree_skb(skb); 23874594861SSteve Wise return error < 0 ? error : 0; 239cfdda9d7SSteve Wise } 240cfdda9d7SSteve Wise 241cfdda9d7SSteve Wise static void release_tid(struct c4iw_rdev *rdev, u32 hwtid, struct sk_buff *skb) 242cfdda9d7SSteve Wise { 243cfdda9d7SSteve Wise struct cpl_tid_release *req; 244cfdda9d7SSteve Wise 245cfdda9d7SSteve Wise skb = get_skb(skb, sizeof *req, GFP_KERNEL); 246cfdda9d7SSteve Wise if (!skb) 247cfdda9d7SSteve Wise return; 248cfdda9d7SSteve Wise req = (struct cpl_tid_release *) skb_put(skb, sizeof(*req)); 249cfdda9d7SSteve Wise INIT_TP_WR(req, hwtid); 250cfdda9d7SSteve Wise OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_TID_RELEASE, hwtid)); 251cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_SETUP, 0); 252cfdda9d7SSteve Wise c4iw_ofld_send(rdev, skb); 253cfdda9d7SSteve Wise return; 254cfdda9d7SSteve Wise } 255cfdda9d7SSteve Wise 256cfdda9d7SSteve Wise static void set_emss(struct c4iw_ep *ep, u16 opt) 257cfdda9d7SSteve Wise { 2586c53e938SHariprasad Shenai ep->emss = ep->com.dev->rdev.lldi.mtus[TCPOPT_MSS_G(opt)] - 25904524a47SHariprasad S ((AF_INET == ep->com.remote_addr.ss_family) ? 26004524a47SHariprasad S sizeof(struct iphdr) : sizeof(struct ipv6hdr)) - 26104524a47SHariprasad S sizeof(struct tcphdr); 262cfdda9d7SSteve Wise ep->mss = ep->emss; 2636c53e938SHariprasad Shenai if (TCPOPT_TSTAMP_G(opt)) 26404524a47SHariprasad S ep->emss -= round_up(TCPOLEN_TIMESTAMP, 4); 265cfdda9d7SSteve Wise if (ep->emss < 128) 266cfdda9d7SSteve Wise ep->emss = 128; 26792e7ae71SHariprasad Shenai if (ep->emss & 7) 26892e7ae71SHariprasad Shenai PDBG("Warning: misaligned mtu idx %u mss %u emss=%u\n", 2696c53e938SHariprasad Shenai TCPOPT_MSS_G(opt), ep->mss, ep->emss); 2706c53e938SHariprasad Shenai PDBG("%s mss_idx %u mss %u emss=%u\n", __func__, TCPOPT_MSS_G(opt), 271cfdda9d7SSteve Wise ep->mss, ep->emss); 272cfdda9d7SSteve Wise } 273cfdda9d7SSteve Wise 274cfdda9d7SSteve Wise static enum c4iw_ep_state state_read(struct c4iw_ep_common *epc) 275cfdda9d7SSteve Wise { 276cfdda9d7SSteve Wise enum c4iw_ep_state state; 277cfdda9d7SSteve Wise 2782f5b48c3SSteve Wise mutex_lock(&epc->mutex); 279cfdda9d7SSteve Wise state = epc->state; 2802f5b48c3SSteve Wise mutex_unlock(&epc->mutex); 281cfdda9d7SSteve Wise return state; 282cfdda9d7SSteve Wise } 283cfdda9d7SSteve Wise 284cfdda9d7SSteve Wise static void __state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new) 285cfdda9d7SSteve Wise { 286cfdda9d7SSteve Wise epc->state = new; 287cfdda9d7SSteve Wise } 288cfdda9d7SSteve Wise 289cfdda9d7SSteve Wise static void state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new) 290cfdda9d7SSteve Wise { 2912f5b48c3SSteve Wise mutex_lock(&epc->mutex); 292cfdda9d7SSteve Wise PDBG("%s - %s -> %s\n", __func__, states[epc->state], states[new]); 293cfdda9d7SSteve Wise __state_set(epc, new); 2942f5b48c3SSteve Wise mutex_unlock(&epc->mutex); 295cfdda9d7SSteve Wise return; 296cfdda9d7SSteve Wise } 297cfdda9d7SSteve Wise 2984a740838SHariprasad S static int alloc_ep_skb_list(struct sk_buff_head *ep_skb_list, int size) 2994a740838SHariprasad S { 3004a740838SHariprasad S struct sk_buff *skb; 3014a740838SHariprasad S unsigned int i; 3024a740838SHariprasad S size_t len; 3034a740838SHariprasad S 3044a740838SHariprasad S len = roundup(sizeof(union cpl_wr_size), 16); 3054a740838SHariprasad S for (i = 0; i < size; i++) { 3064a740838SHariprasad S skb = alloc_skb(len, GFP_KERNEL); 3074a740838SHariprasad S if (!skb) 3084a740838SHariprasad S goto fail; 3094a740838SHariprasad S skb_queue_tail(ep_skb_list, skb); 3104a740838SHariprasad S } 3114a740838SHariprasad S return 0; 3124a740838SHariprasad S fail: 3134a740838SHariprasad S skb_queue_purge(ep_skb_list); 3144a740838SHariprasad S return -ENOMEM; 3154a740838SHariprasad S } 3164a740838SHariprasad S 317cfdda9d7SSteve Wise static void *alloc_ep(int size, gfp_t gfp) 318cfdda9d7SSteve Wise { 319cfdda9d7SSteve Wise struct c4iw_ep_common *epc; 320cfdda9d7SSteve Wise 321cfdda9d7SSteve Wise epc = kzalloc(size, gfp); 322cfdda9d7SSteve Wise if (epc) { 323cfdda9d7SSteve Wise kref_init(&epc->kref); 3242f5b48c3SSteve Wise mutex_init(&epc->mutex); 325aadc4df3SSteve Wise c4iw_init_wr_wait(&epc->wr_wait); 326cfdda9d7SSteve Wise } 327cfdda9d7SSteve Wise PDBG("%s alloc ep %p\n", __func__, epc); 328cfdda9d7SSteve Wise return epc; 329cfdda9d7SSteve Wise } 330cfdda9d7SSteve Wise 331944661ddSHariprasad S static void remove_ep_tid(struct c4iw_ep *ep) 332944661ddSHariprasad S { 333944661ddSHariprasad S unsigned long flags; 334944661ddSHariprasad S 335944661ddSHariprasad S spin_lock_irqsave(&ep->com.dev->lock, flags); 336944661ddSHariprasad S _remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid, 0); 337944661ddSHariprasad S spin_unlock_irqrestore(&ep->com.dev->lock, flags); 338944661ddSHariprasad S } 339944661ddSHariprasad S 340944661ddSHariprasad S static void insert_ep_tid(struct c4iw_ep *ep) 341944661ddSHariprasad S { 342944661ddSHariprasad S unsigned long flags; 343944661ddSHariprasad S 344944661ddSHariprasad S spin_lock_irqsave(&ep->com.dev->lock, flags); 345944661ddSHariprasad S _insert_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep, ep->hwtid, 0); 346944661ddSHariprasad S spin_unlock_irqrestore(&ep->com.dev->lock, flags); 347944661ddSHariprasad S } 348944661ddSHariprasad S 349944661ddSHariprasad S /* 350944661ddSHariprasad S * Atomically lookup the ep ptr given the tid and grab a reference on the ep. 351944661ddSHariprasad S */ 352944661ddSHariprasad S static struct c4iw_ep *get_ep_from_tid(struct c4iw_dev *dev, unsigned int tid) 353944661ddSHariprasad S { 354944661ddSHariprasad S struct c4iw_ep *ep; 355944661ddSHariprasad S unsigned long flags; 356944661ddSHariprasad S 357944661ddSHariprasad S spin_lock_irqsave(&dev->lock, flags); 358944661ddSHariprasad S ep = idr_find(&dev->hwtid_idr, tid); 359944661ddSHariprasad S if (ep) 360944661ddSHariprasad S c4iw_get_ep(&ep->com); 361944661ddSHariprasad S spin_unlock_irqrestore(&dev->lock, flags); 362944661ddSHariprasad S return ep; 363944661ddSHariprasad S } 364944661ddSHariprasad S 365f86fac79SHariprasad S /* 366f86fac79SHariprasad S * Atomically lookup the ep ptr given the stid and grab a reference on the ep. 367f86fac79SHariprasad S */ 368f86fac79SHariprasad S static struct c4iw_listen_ep *get_ep_from_stid(struct c4iw_dev *dev, 369f86fac79SHariprasad S unsigned int stid) 370f86fac79SHariprasad S { 371f86fac79SHariprasad S struct c4iw_listen_ep *ep; 372f86fac79SHariprasad S unsigned long flags; 373f86fac79SHariprasad S 374f86fac79SHariprasad S spin_lock_irqsave(&dev->lock, flags); 375f86fac79SHariprasad S ep = idr_find(&dev->stid_idr, stid); 376f86fac79SHariprasad S if (ep) 377f86fac79SHariprasad S c4iw_get_ep(&ep->com); 378f86fac79SHariprasad S spin_unlock_irqrestore(&dev->lock, flags); 379f86fac79SHariprasad S return ep; 380f86fac79SHariprasad S } 381f86fac79SHariprasad S 382cfdda9d7SSteve Wise void _c4iw_free_ep(struct kref *kref) 383cfdda9d7SSteve Wise { 384cfdda9d7SSteve Wise struct c4iw_ep *ep; 385cfdda9d7SSteve Wise 386cfdda9d7SSteve Wise ep = container_of(kref, struct c4iw_ep, com.kref); 3879dec900cSHariprasad S PDBG("%s ep %p state %s\n", __func__, ep, states[ep->com.state]); 388325abeadSVipul Pandya if (test_bit(QP_REFERENCED, &ep->com.flags)) 389325abeadSVipul Pandya deref_qp(ep); 390cfdda9d7SSteve Wise if (test_bit(RELEASE_RESOURCES, &ep->com.flags)) { 39184cc6ac6SHariprasad S if (ep->com.remote_addr.ss_family == AF_INET6) { 39284cc6ac6SHariprasad S struct sockaddr_in6 *sin6 = 39384cc6ac6SHariprasad S (struct sockaddr_in6 *) 394170003c8SSteve Wise &ep->com.local_addr; 39584cc6ac6SHariprasad S 39684cc6ac6SHariprasad S cxgb4_clip_release( 39784cc6ac6SHariprasad S ep->com.dev->rdev.lldi.ports[0], 39884cc6ac6SHariprasad S (const u32 *)&sin6->sin6_addr.s6_addr, 39984cc6ac6SHariprasad S 1); 40084cc6ac6SHariprasad S } 401cfdda9d7SSteve Wise cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid); 402cfdda9d7SSteve Wise dst_release(ep->dst); 403cfdda9d7SSteve Wise cxgb4_l2t_release(ep->l2t); 404c878b706SHariprasad S if (ep->mpa_skb) 405c878b706SHariprasad S kfree_skb(ep->mpa_skb); 406cfdda9d7SSteve Wise } 4074a740838SHariprasad S if (!skb_queue_empty(&ep->com.ep_skb_list)) 4084a740838SHariprasad S skb_queue_purge(&ep->com.ep_skb_list); 409cfdda9d7SSteve Wise kfree(ep); 410cfdda9d7SSteve Wise } 411cfdda9d7SSteve Wise 412cfdda9d7SSteve Wise static void release_ep_resources(struct c4iw_ep *ep) 413cfdda9d7SSteve Wise { 414cfdda9d7SSteve Wise set_bit(RELEASE_RESOURCES, &ep->com.flags); 415944661ddSHariprasad S 416944661ddSHariprasad S /* 417944661ddSHariprasad S * If we have a hwtid, then remove it from the idr table 418944661ddSHariprasad S * so lookups will no longer find this endpoint. Otherwise 419944661ddSHariprasad S * we have a race where one thread finds the ep ptr just 420944661ddSHariprasad S * before the other thread is freeing the ep memory. 421944661ddSHariprasad S */ 422944661ddSHariprasad S if (ep->hwtid != -1) 423944661ddSHariprasad S remove_ep_tid(ep); 424cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 425cfdda9d7SSteve Wise } 426cfdda9d7SSteve Wise 427cfdda9d7SSteve Wise static int status2errno(int status) 428cfdda9d7SSteve Wise { 429cfdda9d7SSteve Wise switch (status) { 430cfdda9d7SSteve Wise case CPL_ERR_NONE: 431cfdda9d7SSteve Wise return 0; 432cfdda9d7SSteve Wise case CPL_ERR_CONN_RESET: 433cfdda9d7SSteve Wise return -ECONNRESET; 434cfdda9d7SSteve Wise case CPL_ERR_ARP_MISS: 435cfdda9d7SSteve Wise return -EHOSTUNREACH; 436cfdda9d7SSteve Wise case CPL_ERR_CONN_TIMEDOUT: 437cfdda9d7SSteve Wise return -ETIMEDOUT; 438cfdda9d7SSteve Wise case CPL_ERR_TCAM_FULL: 439cfdda9d7SSteve Wise return -ENOMEM; 440cfdda9d7SSteve Wise case CPL_ERR_CONN_EXIST: 441cfdda9d7SSteve Wise return -EADDRINUSE; 442cfdda9d7SSteve Wise default: 443cfdda9d7SSteve Wise return -EIO; 444cfdda9d7SSteve Wise } 445cfdda9d7SSteve Wise } 446cfdda9d7SSteve Wise 447cfdda9d7SSteve Wise /* 448cfdda9d7SSteve Wise * Try and reuse skbs already allocated... 449cfdda9d7SSteve Wise */ 450cfdda9d7SSteve Wise static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp) 451cfdda9d7SSteve Wise { 452cfdda9d7SSteve Wise if (skb && !skb_is_nonlinear(skb) && !skb_cloned(skb)) { 453cfdda9d7SSteve Wise skb_trim(skb, 0); 454cfdda9d7SSteve Wise skb_get(skb); 455cfdda9d7SSteve Wise skb_reset_transport_header(skb); 456cfdda9d7SSteve Wise } else { 457cfdda9d7SSteve Wise skb = alloc_skb(len, gfp); 458cfdda9d7SSteve Wise } 459b38a0ad8SSteve Wise t4_set_arp_err_handler(skb, NULL, NULL); 460cfdda9d7SSteve Wise return skb; 461cfdda9d7SSteve Wise } 462cfdda9d7SSteve Wise 463830662f6SVipul Pandya static struct net_device *get_real_dev(struct net_device *egress_dev) 464830662f6SVipul Pandya { 46511b8e22dSSteve Wise return rdma_vlan_dev_real_dev(egress_dev) ? : egress_dev; 466830662f6SVipul Pandya } 467830662f6SVipul Pandya 468830662f6SVipul Pandya static int our_interface(struct c4iw_dev *dev, struct net_device *egress_dev) 469830662f6SVipul Pandya { 470830662f6SVipul Pandya int i; 471830662f6SVipul Pandya 472830662f6SVipul Pandya egress_dev = get_real_dev(egress_dev); 473830662f6SVipul Pandya for (i = 0; i < dev->rdev.lldi.nports; i++) 474830662f6SVipul Pandya if (dev->rdev.lldi.ports[i] == egress_dev) 475830662f6SVipul Pandya return 1; 476830662f6SVipul Pandya return 0; 477830662f6SVipul Pandya } 478830662f6SVipul Pandya 479830662f6SVipul Pandya static struct dst_entry *find_route6(struct c4iw_dev *dev, __u8 *local_ip, 480830662f6SVipul Pandya __u8 *peer_ip, __be16 local_port, 481830662f6SVipul Pandya __be16 peer_port, u8 tos, 482830662f6SVipul Pandya __u32 sin6_scope_id) 483830662f6SVipul Pandya { 484830662f6SVipul Pandya struct dst_entry *dst = NULL; 485830662f6SVipul Pandya 486830662f6SVipul Pandya if (IS_ENABLED(CONFIG_IPV6)) { 487830662f6SVipul Pandya struct flowi6 fl6; 488830662f6SVipul Pandya 489830662f6SVipul Pandya memset(&fl6, 0, sizeof(fl6)); 490830662f6SVipul Pandya memcpy(&fl6.daddr, peer_ip, 16); 491830662f6SVipul Pandya memcpy(&fl6.saddr, local_ip, 16); 492830662f6SVipul Pandya if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL) 493830662f6SVipul Pandya fl6.flowi6_oif = sin6_scope_id; 494830662f6SVipul Pandya dst = ip6_route_output(&init_net, NULL, &fl6); 495830662f6SVipul Pandya if (!dst) 496830662f6SVipul Pandya goto out; 497830662f6SVipul Pandya if (!our_interface(dev, ip6_dst_idev(dst)->dev) && 498830662f6SVipul Pandya !(ip6_dst_idev(dst)->dev->flags & IFF_LOOPBACK)) { 499830662f6SVipul Pandya dst_release(dst); 500830662f6SVipul Pandya dst = NULL; 501830662f6SVipul Pandya } 502830662f6SVipul Pandya } 503830662f6SVipul Pandya 504830662f6SVipul Pandya out: 505830662f6SVipul Pandya return dst; 506830662f6SVipul Pandya } 507830662f6SVipul Pandya 508cfdda9d7SSteve Wise static void arp_failure_discard(void *handle, struct sk_buff *skb) 509cfdda9d7SSteve Wise { 5109dec900cSHariprasad S pr_err(MOD "ARP failure\n"); 511cfdda9d7SSteve Wise kfree_skb(skb); 512cfdda9d7SSteve Wise } 513cfdda9d7SSteve Wise 51464bec74aSHariprasad S static void mpa_start_arp_failure(void *handle, struct sk_buff *skb) 51564bec74aSHariprasad S { 51664bec74aSHariprasad S pr_err("ARP failure during MPA Negotiation - Closing Connection\n"); 51764bec74aSHariprasad S } 51864bec74aSHariprasad S 5199dec900cSHariprasad S enum { 5208d1f1a6bSHariprasad S NUM_FAKE_CPLS = 2, 5219dec900cSHariprasad S FAKE_CPL_PUT_EP_SAFE = NUM_CPL_CMDS + 0, 5228d1f1a6bSHariprasad S FAKE_CPL_PASS_PUT_EP_SAFE = NUM_CPL_CMDS + 1, 5239dec900cSHariprasad S }; 5249dec900cSHariprasad S 5259dec900cSHariprasad S static int _put_ep_safe(struct c4iw_dev *dev, struct sk_buff *skb) 5269dec900cSHariprasad S { 5279dec900cSHariprasad S struct c4iw_ep *ep; 5289dec900cSHariprasad S 5299dec900cSHariprasad S ep = *((struct c4iw_ep **)(skb->cb + 2 * sizeof(void *))); 5309dec900cSHariprasad S release_ep_resources(ep); 5319dec900cSHariprasad S return 0; 5329dec900cSHariprasad S } 5339dec900cSHariprasad S 5348d1f1a6bSHariprasad S static int _put_pass_ep_safe(struct c4iw_dev *dev, struct sk_buff *skb) 5358d1f1a6bSHariprasad S { 5368d1f1a6bSHariprasad S struct c4iw_ep *ep; 5378d1f1a6bSHariprasad S 5388d1f1a6bSHariprasad S ep = *((struct c4iw_ep **)(skb->cb + 2 * sizeof(void *))); 5398d1f1a6bSHariprasad S c4iw_put_ep(&ep->parent_ep->com); 5408d1f1a6bSHariprasad S release_ep_resources(ep); 5418d1f1a6bSHariprasad S return 0; 5428d1f1a6bSHariprasad S } 5438d1f1a6bSHariprasad S 5449dec900cSHariprasad S /* 5459dec900cSHariprasad S * Fake up a special CPL opcode and call sched() so process_work() will call 5469dec900cSHariprasad S * _put_ep_safe() in a safe context to free the ep resources. This is needed 5479dec900cSHariprasad S * because ARP error handlers are called in an ATOMIC context, and 5489dec900cSHariprasad S * _c4iw_free_ep() needs to block. 5499dec900cSHariprasad S */ 5508d1f1a6bSHariprasad S static void queue_arp_failure_cpl(struct c4iw_ep *ep, struct sk_buff *skb, 5518d1f1a6bSHariprasad S int cpl) 5529dec900cSHariprasad S { 5539dec900cSHariprasad S struct cpl_act_establish *rpl = cplhdr(skb); 5549dec900cSHariprasad S 5559dec900cSHariprasad S /* Set our special ARP_FAILURE opcode */ 5568d1f1a6bSHariprasad S rpl->ot.opcode = cpl; 5579dec900cSHariprasad S 5589dec900cSHariprasad S /* 5599dec900cSHariprasad S * Save ep in the skb->cb area, after where sched() will save the dev 5609dec900cSHariprasad S * ptr. 5619dec900cSHariprasad S */ 5629dec900cSHariprasad S *((struct c4iw_ep **)(skb->cb + 2 * sizeof(void *))) = ep; 5639dec900cSHariprasad S sched(ep->com.dev, skb); 5649dec900cSHariprasad S } 5659dec900cSHariprasad S 5669dec900cSHariprasad S /* Handle an ARP failure for an accept */ 5679dec900cSHariprasad S static void pass_accept_rpl_arp_failure(void *handle, struct sk_buff *skb) 5689dec900cSHariprasad S { 5699dec900cSHariprasad S struct c4iw_ep *ep = handle; 5709dec900cSHariprasad S 5719dec900cSHariprasad S pr_err(MOD "ARP failure during accept - tid %u -dropping connection\n", 5729dec900cSHariprasad S ep->hwtid); 5739dec900cSHariprasad S 5749dec900cSHariprasad S __state_set(&ep->com, DEAD); 5758d1f1a6bSHariprasad S queue_arp_failure_cpl(ep, skb, FAKE_CPL_PASS_PUT_EP_SAFE); 5769dec900cSHariprasad S } 5779dec900cSHariprasad S 578cfdda9d7SSteve Wise /* 579cfdda9d7SSteve Wise * Handle an ARP failure for an active open. 580cfdda9d7SSteve Wise */ 581cfdda9d7SSteve Wise static void act_open_req_arp_failure(void *handle, struct sk_buff *skb) 582cfdda9d7SSteve Wise { 5835dab6d3aSHariprasad S struct c4iw_ep *ep = handle; 5845dab6d3aSHariprasad S 585e3d132d1SMasanari Iida printk(KERN_ERR MOD "ARP failure during connect\n"); 5865dab6d3aSHariprasad S connect_reply_upcall(ep, -EHOSTUNREACH); 5879dec900cSHariprasad S __state_set(&ep->com, DEAD); 58884cc6ac6SHariprasad S if (ep->com.remote_addr.ss_family == AF_INET6) { 58984cc6ac6SHariprasad S struct sockaddr_in6 *sin6 = 590170003c8SSteve Wise (struct sockaddr_in6 *)&ep->com.local_addr; 59184cc6ac6SHariprasad S cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0], 59284cc6ac6SHariprasad S (const u32 *)&sin6->sin6_addr.s6_addr, 1); 59384cc6ac6SHariprasad S } 5945dab6d3aSHariprasad S remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid); 5955dab6d3aSHariprasad S cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid); 5968d1f1a6bSHariprasad S queue_arp_failure_cpl(ep, skb, FAKE_CPL_PUT_EP_SAFE); 597cfdda9d7SSteve Wise } 598cfdda9d7SSteve Wise 599cfdda9d7SSteve Wise /* 600cfdda9d7SSteve Wise * Handle an ARP failure for a CPL_ABORT_REQ. Change it into a no RST variant 601cfdda9d7SSteve Wise * and send it along. 602cfdda9d7SSteve Wise */ 603cfdda9d7SSteve Wise static void abort_arp_failure(void *handle, struct sk_buff *skb) 604cfdda9d7SSteve Wise { 605761e19a5SHariprasad S int ret; 606761e19a5SHariprasad S struct c4iw_ep *ep = handle; 607761e19a5SHariprasad S struct c4iw_rdev *rdev = &ep->com.dev->rdev; 608cfdda9d7SSteve Wise struct cpl_abort_req *req = cplhdr(skb); 609cfdda9d7SSteve Wise 610cfdda9d7SSteve Wise PDBG("%s rdev %p\n", __func__, rdev); 611cfdda9d7SSteve Wise req->cmd = CPL_ABORT_NO_RST; 612761e19a5SHariprasad S ret = c4iw_ofld_send(rdev, skb); 613761e19a5SHariprasad S if (ret) { 614761e19a5SHariprasad S __state_set(&ep->com, DEAD); 615761e19a5SHariprasad S queue_arp_failure_cpl(ep, skb, FAKE_CPL_PUT_EP_SAFE); 616761e19a5SHariprasad S } 617cfdda9d7SSteve Wise } 618cfdda9d7SSteve Wise 6194a740838SHariprasad S static int send_flowc(struct c4iw_ep *ep) 620cfdda9d7SSteve Wise { 621cfdda9d7SSteve Wise struct fw_flowc_wr *flowc; 6224a740838SHariprasad S struct sk_buff *skb = skb_dequeue(&ep->com.ep_skb_list); 623cfdda9d7SSteve Wise int i; 624ac8e4c69SHariprasad S u16 vlan = ep->l2t->vlan; 625ac8e4c69SHariprasad S int nparams; 626ac8e4c69SHariprasad S 6274a740838SHariprasad S if (WARN_ON(!skb)) 6284a740838SHariprasad S return -ENOMEM; 6294a740838SHariprasad S 630ac8e4c69SHariprasad S if (vlan == CPL_L2T_VLAN_NONE) 631ac8e4c69SHariprasad S nparams = 8; 632ac8e4c69SHariprasad S else 633ac8e4c69SHariprasad S nparams = 9; 634cfdda9d7SSteve Wise 6354a740838SHariprasad S flowc = (struct fw_flowc_wr *)__skb_put(skb, FLOWC_LEN); 636cfdda9d7SSteve Wise 637e2ac9628SHariprasad Shenai flowc->op_to_nparams = cpu_to_be32(FW_WR_OP_V(FW_FLOWC_WR) | 638ac8e4c69SHariprasad S FW_FLOWC_WR_NPARAMS_V(nparams)); 6394a740838SHariprasad S flowc->flowid_len16 = cpu_to_be32(FW_WR_LEN16_V(DIV_ROUND_UP(FLOWC_LEN, 640e2ac9628SHariprasad Shenai 16)) | FW_WR_FLOWID_V(ep->hwtid)); 641cfdda9d7SSteve Wise 642cfdda9d7SSteve Wise flowc->mnemval[0].mnemonic = FW_FLOWC_MNEM_PFNVFN; 6435167865aSHariprasad Shenai flowc->mnemval[0].val = cpu_to_be32(FW_PFVF_CMD_PFN_V 64435b1de55SHariprasad Shenai (ep->com.dev->rdev.lldi.pf)); 645cfdda9d7SSteve Wise flowc->mnemval[1].mnemonic = FW_FLOWC_MNEM_CH; 646cfdda9d7SSteve Wise flowc->mnemval[1].val = cpu_to_be32(ep->tx_chan); 647cfdda9d7SSteve Wise flowc->mnemval[2].mnemonic = FW_FLOWC_MNEM_PORT; 648cfdda9d7SSteve Wise flowc->mnemval[2].val = cpu_to_be32(ep->tx_chan); 649cfdda9d7SSteve Wise flowc->mnemval[3].mnemonic = FW_FLOWC_MNEM_IQID; 650cfdda9d7SSteve Wise flowc->mnemval[3].val = cpu_to_be32(ep->rss_qid); 651cfdda9d7SSteve Wise flowc->mnemval[4].mnemonic = FW_FLOWC_MNEM_SNDNXT; 652cfdda9d7SSteve Wise flowc->mnemval[4].val = cpu_to_be32(ep->snd_seq); 653cfdda9d7SSteve Wise flowc->mnemval[5].mnemonic = FW_FLOWC_MNEM_RCVNXT; 654cfdda9d7SSteve Wise flowc->mnemval[5].val = cpu_to_be32(ep->rcv_seq); 655cfdda9d7SSteve Wise flowc->mnemval[6].mnemonic = FW_FLOWC_MNEM_SNDBUF; 656b408ff28SHariprasad Shenai flowc->mnemval[6].val = cpu_to_be32(ep->snd_win); 657cfdda9d7SSteve Wise flowc->mnemval[7].mnemonic = FW_FLOWC_MNEM_MSS; 658cfdda9d7SSteve Wise flowc->mnemval[7].val = cpu_to_be32(ep->emss); 659ac8e4c69SHariprasad S if (nparams == 9) { 660ac8e4c69SHariprasad S u16 pri; 661ac8e4c69SHariprasad S 662ac8e4c69SHariprasad S pri = (vlan & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT; 663ac8e4c69SHariprasad S flowc->mnemval[8].mnemonic = FW_FLOWC_MNEM_SCHEDCLASS; 664ac8e4c69SHariprasad S flowc->mnemval[8].val = cpu_to_be32(pri); 665ac8e4c69SHariprasad S } else { 666cfdda9d7SSteve Wise /* Pad WR to 16 byte boundary */ 667cfdda9d7SSteve Wise flowc->mnemval[8].mnemonic = 0; 668cfdda9d7SSteve Wise flowc->mnemval[8].val = 0; 669ac8e4c69SHariprasad S } 670cfdda9d7SSteve Wise for (i = 0; i < 9; i++) { 671cfdda9d7SSteve Wise flowc->mnemval[i].r4[0] = 0; 672cfdda9d7SSteve Wise flowc->mnemval[i].r4[1] = 0; 673cfdda9d7SSteve Wise flowc->mnemval[i].r4[2] = 0; 674cfdda9d7SSteve Wise } 675cfdda9d7SSteve Wise 676cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); 677fef4422dSHariprasad S return c4iw_ofld_send(&ep->com.dev->rdev, skb); 678cfdda9d7SSteve Wise } 679cfdda9d7SSteve Wise 6804a740838SHariprasad S static int send_halfclose(struct c4iw_ep *ep) 681cfdda9d7SSteve Wise { 682cfdda9d7SSteve Wise struct cpl_close_con_req *req; 6834a740838SHariprasad S struct sk_buff *skb = skb_dequeue(&ep->com.ep_skb_list); 684cfdda9d7SSteve Wise int wrlen = roundup(sizeof *req, 16); 685cfdda9d7SSteve Wise 686cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 6874a740838SHariprasad S if (WARN_ON(!skb)) 688cfdda9d7SSteve Wise return -ENOMEM; 6894a740838SHariprasad S 690cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); 691cfdda9d7SSteve Wise t4_set_arp_err_handler(skb, NULL, arp_failure_discard); 692cfdda9d7SSteve Wise req = (struct cpl_close_con_req *) skb_put(skb, wrlen); 693cfdda9d7SSteve Wise memset(req, 0, wrlen); 694cfdda9d7SSteve Wise INIT_TP_WR(req, ep->hwtid); 695cfdda9d7SSteve Wise OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, 696cfdda9d7SSteve Wise ep->hwtid)); 697cfdda9d7SSteve Wise return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); 698cfdda9d7SSteve Wise } 699cfdda9d7SSteve Wise 7004a740838SHariprasad S static int send_abort(struct c4iw_ep *ep) 701cfdda9d7SSteve Wise { 702cfdda9d7SSteve Wise struct cpl_abort_req *req; 703cfdda9d7SSteve Wise int wrlen = roundup(sizeof *req, 16); 7044a740838SHariprasad S struct sk_buff *req_skb = skb_dequeue(&ep->com.ep_skb_list); 705cfdda9d7SSteve Wise 706cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 7074a740838SHariprasad S if (WARN_ON(!req_skb)) 708cfdda9d7SSteve Wise return -ENOMEM; 7094a740838SHariprasad S 7104a740838SHariprasad S set_wr_txq(req_skb, CPL_PRIORITY_DATA, ep->txq_idx); 7114a740838SHariprasad S t4_set_arp_err_handler(req_skb, ep, abort_arp_failure); 7124a740838SHariprasad S req = (struct cpl_abort_req *)skb_put(req_skb, wrlen); 713cfdda9d7SSteve Wise memset(req, 0, wrlen); 714cfdda9d7SSteve Wise INIT_TP_WR(req, ep->hwtid); 715cfdda9d7SSteve Wise OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_REQ, ep->hwtid)); 716cfdda9d7SSteve Wise req->cmd = CPL_ABORT_SEND_RST; 7174a740838SHariprasad S return c4iw_l2t_send(&ep->com.dev->rdev, req_skb, ep->l2t); 718cfdda9d7SSteve Wise } 719cfdda9d7SSteve Wise 72092e7ae71SHariprasad Shenai static void best_mtu(const unsigned short *mtus, unsigned short mtu, 72104524a47SHariprasad S unsigned int *idx, int use_ts, int ipv6) 72292e7ae71SHariprasad Shenai { 72304524a47SHariprasad S unsigned short hdr_size = (ipv6 ? 72404524a47SHariprasad S sizeof(struct ipv6hdr) : 72504524a47SHariprasad S sizeof(struct iphdr)) + 72692e7ae71SHariprasad Shenai sizeof(struct tcphdr) + 72704524a47SHariprasad S (use_ts ? 72804524a47SHariprasad S round_up(TCPOLEN_TIMESTAMP, 4) : 0); 72992e7ae71SHariprasad Shenai unsigned short data_size = mtu - hdr_size; 73092e7ae71SHariprasad Shenai 73192e7ae71SHariprasad Shenai cxgb4_best_aligned_mtu(mtus, hdr_size, data_size, 8, idx); 73292e7ae71SHariprasad Shenai } 73392e7ae71SHariprasad Shenai 734cfdda9d7SSteve Wise static int send_connect(struct c4iw_ep *ep) 735cfdda9d7SSteve Wise { 736963cab50SHariprasad S struct cpl_act_open_req *req = NULL; 737963cab50SHariprasad S struct cpl_t5_act_open_req *t5req = NULL; 738963cab50SHariprasad S struct cpl_t6_act_open_req *t6req = NULL; 739963cab50SHariprasad S struct cpl_act_open_req6 *req6 = NULL; 740963cab50SHariprasad S struct cpl_t5_act_open_req6 *t5req6 = NULL; 741963cab50SHariprasad S struct cpl_t6_act_open_req6 *t6req6 = NULL; 742cfdda9d7SSteve Wise struct sk_buff *skb; 743cfdda9d7SSteve Wise u64 opt0; 744cfdda9d7SSteve Wise u32 opt2; 745cfdda9d7SSteve Wise unsigned int mtu_idx; 746cfdda9d7SSteve Wise int wscale; 747963cab50SHariprasad S int win, sizev4, sizev6, wrlen; 7489eccfe10SSteve Wise struct sockaddr_in *la = (struct sockaddr_in *) 749170003c8SSteve Wise &ep->com.local_addr; 7509eccfe10SSteve Wise struct sockaddr_in *ra = (struct sockaddr_in *) 751170003c8SSteve Wise &ep->com.remote_addr; 7529eccfe10SSteve Wise struct sockaddr_in6 *la6 = (struct sockaddr_in6 *) 753170003c8SSteve Wise &ep->com.local_addr; 7549eccfe10SSteve Wise struct sockaddr_in6 *ra6 = (struct sockaddr_in6 *) 755170003c8SSteve Wise &ep->com.remote_addr; 75684cc6ac6SHariprasad S int ret; 757963cab50SHariprasad S enum chip_type adapter_type = ep->com.dev->rdev.lldi.adapter_type; 758963cab50SHariprasad S u32 isn = (prandom_u32() & ~7UL) - 1; 759963cab50SHariprasad S 760963cab50SHariprasad S switch (CHELSIO_CHIP_VERSION(adapter_type)) { 761963cab50SHariprasad S case CHELSIO_T4: 762963cab50SHariprasad S sizev4 = sizeof(struct cpl_act_open_req); 763963cab50SHariprasad S sizev6 = sizeof(struct cpl_act_open_req6); 764963cab50SHariprasad S break; 765963cab50SHariprasad S case CHELSIO_T5: 766963cab50SHariprasad S sizev4 = sizeof(struct cpl_t5_act_open_req); 767963cab50SHariprasad S sizev6 = sizeof(struct cpl_t5_act_open_req6); 768963cab50SHariprasad S break; 769963cab50SHariprasad S case CHELSIO_T6: 770963cab50SHariprasad S sizev4 = sizeof(struct cpl_t6_act_open_req); 771963cab50SHariprasad S sizev6 = sizeof(struct cpl_t6_act_open_req6); 772963cab50SHariprasad S break; 773963cab50SHariprasad S default: 774963cab50SHariprasad S pr_err("T%d Chip is not supported\n", 775963cab50SHariprasad S CHELSIO_CHIP_VERSION(adapter_type)); 776963cab50SHariprasad S return -EINVAL; 777963cab50SHariprasad S } 778830662f6SVipul Pandya 779830662f6SVipul Pandya wrlen = (ep->com.remote_addr.ss_family == AF_INET) ? 780830662f6SVipul Pandya roundup(sizev4, 16) : 781830662f6SVipul Pandya roundup(sizev6, 16); 782cfdda9d7SSteve Wise 783cfdda9d7SSteve Wise PDBG("%s ep %p atid %u\n", __func__, ep, ep->atid); 784cfdda9d7SSteve Wise 785cfdda9d7SSteve Wise skb = get_skb(NULL, wrlen, GFP_KERNEL); 786cfdda9d7SSteve Wise if (!skb) { 787cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - failed to alloc skb.\n", 788cfdda9d7SSteve Wise __func__); 789cfdda9d7SSteve Wise return -ENOMEM; 790cfdda9d7SSteve Wise } 791d4f1a5c6SSteve Wise set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx); 792cfdda9d7SSteve Wise 79392e7ae71SHariprasad Shenai best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx, 79404524a47SHariprasad S enable_tcp_timestamps, 79504524a47SHariprasad S (AF_INET == ep->com.remote_addr.ss_family) ? 0 : 1); 796cfdda9d7SSteve Wise wscale = compute_wscale(rcv_win); 797b408ff28SHariprasad Shenai 798b408ff28SHariprasad Shenai /* 799b408ff28SHariprasad Shenai * Specify the largest window that will fit in opt0. The 800b408ff28SHariprasad Shenai * remainder will be specified in the rx_data_ack. 801b408ff28SHariprasad Shenai */ 802b408ff28SHariprasad Shenai win = ep->rcv_win >> 10; 803d7990b0cSAnish Bhatt if (win > RCV_BUFSIZ_M) 804d7990b0cSAnish Bhatt win = RCV_BUFSIZ_M; 805b408ff28SHariprasad Shenai 8066c53e938SHariprasad Shenai opt0 = (nocong ? NO_CONG_F : 0) | 807d7990b0cSAnish Bhatt KEEP_ALIVE_F | 8086c53e938SHariprasad Shenai DELACK_F | 809d7990b0cSAnish Bhatt WND_SCALE_V(wscale) | 810d7990b0cSAnish Bhatt MSS_IDX_V(mtu_idx) | 811d7990b0cSAnish Bhatt L2T_IDX_V(ep->l2t->idx) | 812d7990b0cSAnish Bhatt TX_CHAN_V(ep->tx_chan) | 813d7990b0cSAnish Bhatt SMAC_SEL_V(ep->smac_idx) | 814ac8e4c69SHariprasad S DSCP_V(ep->tos >> 2) | 815d7990b0cSAnish Bhatt ULP_MODE_V(ULP_MODE_TCPDDP) | 816d7990b0cSAnish Bhatt RCV_BUFSIZ_V(win); 817d7990b0cSAnish Bhatt opt2 = RX_CHANNEL_V(0) | 8186c53e938SHariprasad Shenai CCTRL_ECN_V(enable_ecn) | 819d7990b0cSAnish Bhatt RSS_QUEUE_VALID_F | RSS_QUEUE_V(ep->rss_qid); 820cfdda9d7SSteve Wise if (enable_tcp_timestamps) 8216c53e938SHariprasad Shenai opt2 |= TSTAMPS_EN_F; 822cfdda9d7SSteve Wise if (enable_tcp_sack) 8236c53e938SHariprasad Shenai opt2 |= SACK_EN_F; 824cfdda9d7SSteve Wise if (wscale && enable_tcp_window_scaling) 825d7990b0cSAnish Bhatt opt2 |= WND_SCALE_EN_F; 826963cab50SHariprasad S if (CHELSIO_CHIP_VERSION(adapter_type) > CHELSIO_T4) { 827963cab50SHariprasad S if (peer2peer) 828963cab50SHariprasad S isn += 4; 829963cab50SHariprasad S 830d7990b0cSAnish Bhatt opt2 |= T5_OPT_2_VALID_F; 831cf7fe64aSHariprasad Shenai opt2 |= CONG_CNTRL_V(CONG_ALG_TAHOE); 8320b741047SHariprasad S opt2 |= T5_ISS_F; 83392e5011aSSteve Wise } 83484cc6ac6SHariprasad S 83584cc6ac6SHariprasad S if (ep->com.remote_addr.ss_family == AF_INET6) 83684cc6ac6SHariprasad S cxgb4_clip_get(ep->com.dev->rdev.lldi.ports[0], 83784cc6ac6SHariprasad S (const u32 *)&la6->sin6_addr.s6_addr, 1); 83884cc6ac6SHariprasad S 8395dab6d3aSHariprasad S t4_set_arp_err_handler(skb, ep, act_open_req_arp_failure); 840cfdda9d7SSteve Wise 841830662f6SVipul Pandya if (ep->com.remote_addr.ss_family == AF_INET) { 842963cab50SHariprasad S switch (CHELSIO_CHIP_VERSION(adapter_type)) { 843963cab50SHariprasad S case CHELSIO_T4: 844cfdda9d7SSteve Wise req = (struct cpl_act_open_req *)skb_put(skb, wrlen); 845cfdda9d7SSteve Wise INIT_TP_WR(req, 0); 846963cab50SHariprasad S break; 847963cab50SHariprasad S case CHELSIO_T5: 848963cab50SHariprasad S t5req = (struct cpl_t5_act_open_req *)skb_put(skb, 849963cab50SHariprasad S wrlen); 850963cab50SHariprasad S INIT_TP_WR(t5req, 0); 851963cab50SHariprasad S req = (struct cpl_act_open_req *)t5req; 852963cab50SHariprasad S break; 853963cab50SHariprasad S case CHELSIO_T6: 854963cab50SHariprasad S t6req = (struct cpl_t6_act_open_req *)skb_put(skb, 855963cab50SHariprasad S wrlen); 856963cab50SHariprasad S INIT_TP_WR(t6req, 0); 857963cab50SHariprasad S req = (struct cpl_act_open_req *)t6req; 858963cab50SHariprasad S t5req = (struct cpl_t5_act_open_req *)t6req; 859963cab50SHariprasad S break; 860963cab50SHariprasad S default: 861963cab50SHariprasad S pr_err("T%d Chip is not supported\n", 862963cab50SHariprasad S CHELSIO_CHIP_VERSION(adapter_type)); 863963cab50SHariprasad S ret = -EINVAL; 864963cab50SHariprasad S goto clip_release; 865963cab50SHariprasad S } 866963cab50SHariprasad S 867963cab50SHariprasad S OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ, 868f079af7aSVipul Pandya ((ep->rss_qid<<14) | ep->atid))); 869830662f6SVipul Pandya req->local_port = la->sin_port; 870830662f6SVipul Pandya req->peer_port = ra->sin_port; 871830662f6SVipul Pandya req->local_ip = la->sin_addr.s_addr; 872830662f6SVipul Pandya req->peer_ip = ra->sin_addr.s_addr; 873cfdda9d7SSteve Wise req->opt0 = cpu_to_be64(opt0); 874963cab50SHariprasad S 875963cab50SHariprasad S if (is_t4(ep->com.dev->rdev.lldi.adapter_type)) { 87641b4f86cSKumar Sanghvi req->params = cpu_to_be32(cxgb4_select_ntuple( 87741b4f86cSKumar Sanghvi ep->com.dev->rdev.lldi.ports[0], 87841b4f86cSKumar Sanghvi ep->l2t)); 879cfdda9d7SSteve Wise req->opt2 = cpu_to_be32(opt2); 880f079af7aSVipul Pandya } else { 881963cab50SHariprasad S t5req->params = cpu_to_be64(FILTER_TUPLE_V( 882963cab50SHariprasad S cxgb4_select_ntuple( 883963cab50SHariprasad S ep->com.dev->rdev.lldi.ports[0], 884963cab50SHariprasad S ep->l2t))); 885963cab50SHariprasad S t5req->rsvd = cpu_to_be32(isn); 886963cab50SHariprasad S PDBG("%s snd_isn %u\n", __func__, t5req->rsvd); 887963cab50SHariprasad S t5req->opt2 = cpu_to_be32(opt2); 888963cab50SHariprasad S } 889963cab50SHariprasad S } else { 890963cab50SHariprasad S switch (CHELSIO_CHIP_VERSION(adapter_type)) { 891963cab50SHariprasad S case CHELSIO_T4: 892830662f6SVipul Pandya req6 = (struct cpl_act_open_req6 *)skb_put(skb, wrlen); 893830662f6SVipul Pandya INIT_TP_WR(req6, 0); 894963cab50SHariprasad S break; 895963cab50SHariprasad S case CHELSIO_T5: 896963cab50SHariprasad S t5req6 = (struct cpl_t5_act_open_req6 *)skb_put(skb, 897963cab50SHariprasad S wrlen); 898963cab50SHariprasad S INIT_TP_WR(t5req6, 0); 899963cab50SHariprasad S req6 = (struct cpl_act_open_req6 *)t5req6; 900963cab50SHariprasad S break; 901963cab50SHariprasad S case CHELSIO_T6: 902963cab50SHariprasad S t6req6 = (struct cpl_t6_act_open_req6 *)skb_put(skb, 903963cab50SHariprasad S wrlen); 904963cab50SHariprasad S INIT_TP_WR(t6req6, 0); 905963cab50SHariprasad S req6 = (struct cpl_act_open_req6 *)t6req6; 906963cab50SHariprasad S t5req6 = (struct cpl_t5_act_open_req6 *)t6req6; 907963cab50SHariprasad S break; 908963cab50SHariprasad S default: 909963cab50SHariprasad S pr_err("T%d Chip is not supported\n", 910963cab50SHariprasad S CHELSIO_CHIP_VERSION(adapter_type)); 911963cab50SHariprasad S ret = -EINVAL; 912963cab50SHariprasad S goto clip_release; 913963cab50SHariprasad S } 914963cab50SHariprasad S 915963cab50SHariprasad S OPCODE_TID(req6) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6, 916830662f6SVipul Pandya ((ep->rss_qid<<14)|ep->atid))); 917830662f6SVipul Pandya req6->local_port = la6->sin6_port; 918830662f6SVipul Pandya req6->peer_port = ra6->sin6_port; 919963cab50SHariprasad S req6->local_ip_hi = *((__be64 *)(la6->sin6_addr.s6_addr)); 920963cab50SHariprasad S req6->local_ip_lo = *((__be64 *)(la6->sin6_addr.s6_addr + 8)); 921963cab50SHariprasad S req6->peer_ip_hi = *((__be64 *)(ra6->sin6_addr.s6_addr)); 922963cab50SHariprasad S req6->peer_ip_lo = *((__be64 *)(ra6->sin6_addr.s6_addr + 8)); 923830662f6SVipul Pandya req6->opt0 = cpu_to_be64(opt0); 924963cab50SHariprasad S 925963cab50SHariprasad S if (is_t4(ep->com.dev->rdev.lldi.adapter_type)) { 92641b4f86cSKumar Sanghvi req6->params = cpu_to_be32(cxgb4_select_ntuple( 92741b4f86cSKumar Sanghvi ep->com.dev->rdev.lldi.ports[0], 928830662f6SVipul Pandya ep->l2t)); 929830662f6SVipul Pandya req6->opt2 = cpu_to_be32(opt2); 930830662f6SVipul Pandya } else { 931963cab50SHariprasad S t5req6->params = cpu_to_be64(FILTER_TUPLE_V( 93241b4f86cSKumar Sanghvi cxgb4_select_ntuple( 93341b4f86cSKumar Sanghvi ep->com.dev->rdev.lldi.ports[0], 93441b4f86cSKumar Sanghvi ep->l2t))); 935963cab50SHariprasad S t5req6->rsvd = cpu_to_be32(isn); 936963cab50SHariprasad S PDBG("%s snd_isn %u\n", __func__, t5req6->rsvd); 937963cab50SHariprasad S t5req6->opt2 = cpu_to_be32(opt2); 938830662f6SVipul Pandya } 939f079af7aSVipul Pandya } 940f079af7aSVipul Pandya 941793dad94SVipul Pandya set_bit(ACT_OPEN_REQ, &ep->com.history); 94284cc6ac6SHariprasad S ret = c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); 943963cab50SHariprasad S clip_release: 94484cc6ac6SHariprasad S if (ret && ep->com.remote_addr.ss_family == AF_INET6) 94584cc6ac6SHariprasad S cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0], 94684cc6ac6SHariprasad S (const u32 *)&la6->sin6_addr.s6_addr, 1); 94784cc6ac6SHariprasad S return ret; 948cfdda9d7SSteve Wise } 949cfdda9d7SSteve Wise 950caa6c9f2SHariprasad S static int send_mpa_req(struct c4iw_ep *ep, struct sk_buff *skb, 951d2fe99e8SKumar Sanghvi u8 mpa_rev_to_use) 952cfdda9d7SSteve Wise { 953caa6c9f2SHariprasad S int mpalen, wrlen, ret; 954cfdda9d7SSteve Wise struct fw_ofld_tx_data_wr *req; 955cfdda9d7SSteve Wise struct mpa_message *mpa; 956d2fe99e8SKumar Sanghvi struct mpa_v2_conn_params mpa_v2_params; 957cfdda9d7SSteve Wise 958cfdda9d7SSteve Wise PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); 959cfdda9d7SSteve Wise 960cfdda9d7SSteve Wise BUG_ON(skb_cloned(skb)); 961cfdda9d7SSteve Wise 962cfdda9d7SSteve Wise mpalen = sizeof(*mpa) + ep->plen; 963d2fe99e8SKumar Sanghvi if (mpa_rev_to_use == 2) 964d2fe99e8SKumar Sanghvi mpalen += sizeof(struct mpa_v2_conn_params); 965cfdda9d7SSteve Wise wrlen = roundup(mpalen + sizeof *req, 16); 966cfdda9d7SSteve Wise skb = get_skb(skb, wrlen, GFP_KERNEL); 967cfdda9d7SSteve Wise if (!skb) { 968cfdda9d7SSteve Wise connect_reply_upcall(ep, -ENOMEM); 969caa6c9f2SHariprasad S return -ENOMEM; 970cfdda9d7SSteve Wise } 971cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); 972cfdda9d7SSteve Wise 973cfdda9d7SSteve Wise req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen); 974cfdda9d7SSteve Wise memset(req, 0, wrlen); 975cfdda9d7SSteve Wise req->op_to_immdlen = cpu_to_be32( 976e2ac9628SHariprasad Shenai FW_WR_OP_V(FW_OFLD_TX_DATA_WR) | 977e2ac9628SHariprasad Shenai FW_WR_COMPL_F | 978e2ac9628SHariprasad Shenai FW_WR_IMMDLEN_V(mpalen)); 979cfdda9d7SSteve Wise req->flowid_len16 = cpu_to_be32( 980e2ac9628SHariprasad Shenai FW_WR_FLOWID_V(ep->hwtid) | 981e2ac9628SHariprasad Shenai FW_WR_LEN16_V(wrlen >> 4)); 982cfdda9d7SSteve Wise req->plen = cpu_to_be32(mpalen); 983cfdda9d7SSteve Wise req->tunnel_to_proxy = cpu_to_be32( 984e2ac9628SHariprasad Shenai FW_OFLD_TX_DATA_WR_FLUSH_F | 985e2ac9628SHariprasad Shenai FW_OFLD_TX_DATA_WR_SHOVE_F); 986cfdda9d7SSteve Wise 987cfdda9d7SSteve Wise mpa = (struct mpa_message *)(req + 1); 988cfdda9d7SSteve Wise memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)); 9893d4e7994SHariprasad S 9903d4e7994SHariprasad S mpa->flags = 0; 9913d4e7994SHariprasad S if (crc_enabled) 9923d4e7994SHariprasad S mpa->flags |= MPA_CRC; 9933d4e7994SHariprasad S if (markers_enabled) { 9943d4e7994SHariprasad S mpa->flags |= MPA_MARKERS; 9953d4e7994SHariprasad S ep->mpa_attr.recv_marker_enabled = 1; 9963d4e7994SHariprasad S } else { 9973d4e7994SHariprasad S ep->mpa_attr.recv_marker_enabled = 0; 9983d4e7994SHariprasad S } 9993d4e7994SHariprasad S if (mpa_rev_to_use == 2) 10003d4e7994SHariprasad S mpa->flags |= MPA_ENHANCED_RDMA_CONN; 10013d4e7994SHariprasad S 1002cfdda9d7SSteve Wise mpa->private_data_size = htons(ep->plen); 1003d2fe99e8SKumar Sanghvi mpa->revision = mpa_rev_to_use; 100401b225e1SKumar Sanghvi if (mpa_rev_to_use == 1) { 1005d2fe99e8SKumar Sanghvi ep->tried_with_mpa_v1 = 1; 100601b225e1SKumar Sanghvi ep->retry_with_mpa_v1 = 0; 100701b225e1SKumar Sanghvi } 1008d2fe99e8SKumar Sanghvi 1009d2fe99e8SKumar Sanghvi if (mpa_rev_to_use == 2) { 1010f747c34aSRoland Dreier mpa->private_data_size = htons(ntohs(mpa->private_data_size) + 1011f747c34aSRoland Dreier sizeof (struct mpa_v2_conn_params)); 10124c2c5763SHariprasad Shenai PDBG("%s initiator ird %u ord %u\n", __func__, ep->ird, 10134c2c5763SHariprasad Shenai ep->ord); 1014d2fe99e8SKumar Sanghvi mpa_v2_params.ird = htons((u16)ep->ird); 1015d2fe99e8SKumar Sanghvi mpa_v2_params.ord = htons((u16)ep->ord); 1016d2fe99e8SKumar Sanghvi 1017d2fe99e8SKumar Sanghvi if (peer2peer) { 1018d2fe99e8SKumar Sanghvi mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); 1019d2fe99e8SKumar Sanghvi if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) 1020d2fe99e8SKumar Sanghvi mpa_v2_params.ord |= 1021d2fe99e8SKumar Sanghvi htons(MPA_V2_RDMA_WRITE_RTR); 1022d2fe99e8SKumar Sanghvi else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) 1023d2fe99e8SKumar Sanghvi mpa_v2_params.ord |= 1024d2fe99e8SKumar Sanghvi htons(MPA_V2_RDMA_READ_RTR); 1025d2fe99e8SKumar Sanghvi } 1026d2fe99e8SKumar Sanghvi memcpy(mpa->private_data, &mpa_v2_params, 1027d2fe99e8SKumar Sanghvi sizeof(struct mpa_v2_conn_params)); 1028cfdda9d7SSteve Wise 1029cfdda9d7SSteve Wise if (ep->plen) 1030d2fe99e8SKumar Sanghvi memcpy(mpa->private_data + 1031d2fe99e8SKumar Sanghvi sizeof(struct mpa_v2_conn_params), 1032d2fe99e8SKumar Sanghvi ep->mpa_pkt + sizeof(*mpa), ep->plen); 1033d2fe99e8SKumar Sanghvi } else 1034d2fe99e8SKumar Sanghvi if (ep->plen) 1035d2fe99e8SKumar Sanghvi memcpy(mpa->private_data, 1036d2fe99e8SKumar Sanghvi ep->mpa_pkt + sizeof(*mpa), ep->plen); 1037cfdda9d7SSteve Wise 1038cfdda9d7SSteve Wise /* 1039cfdda9d7SSteve Wise * Reference the mpa skb. This ensures the data area 1040cfdda9d7SSteve Wise * will remain in memory until the hw acks the tx. 1041cfdda9d7SSteve Wise * Function fw4_ack() will deref it. 1042cfdda9d7SSteve Wise */ 1043cfdda9d7SSteve Wise skb_get(skb); 1044cfdda9d7SSteve Wise t4_set_arp_err_handler(skb, NULL, arp_failure_discard); 1045cfdda9d7SSteve Wise BUG_ON(ep->mpa_skb); 1046cfdda9d7SSteve Wise ep->mpa_skb = skb; 1047caa6c9f2SHariprasad S ret = c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); 1048caa6c9f2SHariprasad S if (ret) 1049caa6c9f2SHariprasad S return ret; 1050cfdda9d7SSteve Wise start_ep_timer(ep); 1051a7db89ebSSteve Wise __state_set(&ep->com, MPA_REQ_SENT); 1052cfdda9d7SSteve Wise ep->mpa_attr.initiator = 1; 10539c88aa00SSteve Wise ep->snd_seq += mpalen; 1054caa6c9f2SHariprasad S return ret; 1055cfdda9d7SSteve Wise } 1056cfdda9d7SSteve Wise 1057cfdda9d7SSteve Wise static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen) 1058cfdda9d7SSteve Wise { 1059cfdda9d7SSteve Wise int mpalen, wrlen; 1060cfdda9d7SSteve Wise struct fw_ofld_tx_data_wr *req; 1061cfdda9d7SSteve Wise struct mpa_message *mpa; 1062cfdda9d7SSteve Wise struct sk_buff *skb; 1063d2fe99e8SKumar Sanghvi struct mpa_v2_conn_params mpa_v2_params; 1064cfdda9d7SSteve Wise 1065cfdda9d7SSteve Wise PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); 1066cfdda9d7SSteve Wise 1067cfdda9d7SSteve Wise mpalen = sizeof(*mpa) + plen; 1068d2fe99e8SKumar Sanghvi if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) 1069d2fe99e8SKumar Sanghvi mpalen += sizeof(struct mpa_v2_conn_params); 1070cfdda9d7SSteve Wise wrlen = roundup(mpalen + sizeof *req, 16); 1071cfdda9d7SSteve Wise 1072cfdda9d7SSteve Wise skb = get_skb(NULL, wrlen, GFP_KERNEL); 1073cfdda9d7SSteve Wise if (!skb) { 1074cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__); 1075cfdda9d7SSteve Wise return -ENOMEM; 1076cfdda9d7SSteve Wise } 1077cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); 1078cfdda9d7SSteve Wise 1079cfdda9d7SSteve Wise req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen); 1080cfdda9d7SSteve Wise memset(req, 0, wrlen); 1081cfdda9d7SSteve Wise req->op_to_immdlen = cpu_to_be32( 1082e2ac9628SHariprasad Shenai FW_WR_OP_V(FW_OFLD_TX_DATA_WR) | 1083e2ac9628SHariprasad Shenai FW_WR_COMPL_F | 1084e2ac9628SHariprasad Shenai FW_WR_IMMDLEN_V(mpalen)); 1085cfdda9d7SSteve Wise req->flowid_len16 = cpu_to_be32( 1086e2ac9628SHariprasad Shenai FW_WR_FLOWID_V(ep->hwtid) | 1087e2ac9628SHariprasad Shenai FW_WR_LEN16_V(wrlen >> 4)); 1088cfdda9d7SSteve Wise req->plen = cpu_to_be32(mpalen); 1089cfdda9d7SSteve Wise req->tunnel_to_proxy = cpu_to_be32( 1090e2ac9628SHariprasad Shenai FW_OFLD_TX_DATA_WR_FLUSH_F | 1091e2ac9628SHariprasad Shenai FW_OFLD_TX_DATA_WR_SHOVE_F); 1092cfdda9d7SSteve Wise 1093cfdda9d7SSteve Wise mpa = (struct mpa_message *)(req + 1); 1094cfdda9d7SSteve Wise memset(mpa, 0, sizeof(*mpa)); 1095cfdda9d7SSteve Wise memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 1096cfdda9d7SSteve Wise mpa->flags = MPA_REJECT; 1097fe7e0a4dSVipul Pandya mpa->revision = ep->mpa_attr.version; 1098cfdda9d7SSteve Wise mpa->private_data_size = htons(plen); 1099d2fe99e8SKumar Sanghvi 1100d2fe99e8SKumar Sanghvi if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1101d2fe99e8SKumar Sanghvi mpa->flags |= MPA_ENHANCED_RDMA_CONN; 1102f747c34aSRoland Dreier mpa->private_data_size = htons(ntohs(mpa->private_data_size) + 1103f747c34aSRoland Dreier sizeof (struct mpa_v2_conn_params)); 1104d2fe99e8SKumar Sanghvi mpa_v2_params.ird = htons(((u16)ep->ird) | 1105d2fe99e8SKumar Sanghvi (peer2peer ? MPA_V2_PEER2PEER_MODEL : 1106d2fe99e8SKumar Sanghvi 0)); 1107d2fe99e8SKumar Sanghvi mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ? 1108d2fe99e8SKumar Sanghvi (p2p_type == 1109d2fe99e8SKumar Sanghvi FW_RI_INIT_P2PTYPE_RDMA_WRITE ? 1110d2fe99e8SKumar Sanghvi MPA_V2_RDMA_WRITE_RTR : p2p_type == 1111d2fe99e8SKumar Sanghvi FW_RI_INIT_P2PTYPE_READ_REQ ? 1112d2fe99e8SKumar Sanghvi MPA_V2_RDMA_READ_RTR : 0) : 0)); 1113d2fe99e8SKumar Sanghvi memcpy(mpa->private_data, &mpa_v2_params, 1114d2fe99e8SKumar Sanghvi sizeof(struct mpa_v2_conn_params)); 1115d2fe99e8SKumar Sanghvi 1116d2fe99e8SKumar Sanghvi if (ep->plen) 1117d2fe99e8SKumar Sanghvi memcpy(mpa->private_data + 1118d2fe99e8SKumar Sanghvi sizeof(struct mpa_v2_conn_params), pdata, plen); 1119d2fe99e8SKumar Sanghvi } else 1120cfdda9d7SSteve Wise if (plen) 1121cfdda9d7SSteve Wise memcpy(mpa->private_data, pdata, plen); 1122cfdda9d7SSteve Wise 1123cfdda9d7SSteve Wise /* 1124cfdda9d7SSteve Wise * Reference the mpa skb again. This ensures the data area 1125cfdda9d7SSteve Wise * will remain in memory until the hw acks the tx. 1126cfdda9d7SSteve Wise * Function fw4_ack() will deref it. 1127cfdda9d7SSteve Wise */ 1128cfdda9d7SSteve Wise skb_get(skb); 1129cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); 113064bec74aSHariprasad S t4_set_arp_err_handler(skb, NULL, mpa_start_arp_failure); 1131cfdda9d7SSteve Wise BUG_ON(ep->mpa_skb); 1132cfdda9d7SSteve Wise ep->mpa_skb = skb; 11339c88aa00SSteve Wise ep->snd_seq += mpalen; 1134cfdda9d7SSteve Wise return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); 1135cfdda9d7SSteve Wise } 1136cfdda9d7SSteve Wise 1137cfdda9d7SSteve Wise static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen) 1138cfdda9d7SSteve Wise { 1139cfdda9d7SSteve Wise int mpalen, wrlen; 1140cfdda9d7SSteve Wise struct fw_ofld_tx_data_wr *req; 1141cfdda9d7SSteve Wise struct mpa_message *mpa; 1142cfdda9d7SSteve Wise struct sk_buff *skb; 1143d2fe99e8SKumar Sanghvi struct mpa_v2_conn_params mpa_v2_params; 1144cfdda9d7SSteve Wise 1145cfdda9d7SSteve Wise PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); 1146cfdda9d7SSteve Wise 1147cfdda9d7SSteve Wise mpalen = sizeof(*mpa) + plen; 1148d2fe99e8SKumar Sanghvi if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) 1149d2fe99e8SKumar Sanghvi mpalen += sizeof(struct mpa_v2_conn_params); 1150cfdda9d7SSteve Wise wrlen = roundup(mpalen + sizeof *req, 16); 1151cfdda9d7SSteve Wise 1152cfdda9d7SSteve Wise skb = get_skb(NULL, wrlen, GFP_KERNEL); 1153cfdda9d7SSteve Wise if (!skb) { 1154cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__); 1155cfdda9d7SSteve Wise return -ENOMEM; 1156cfdda9d7SSteve Wise } 1157cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); 1158cfdda9d7SSteve Wise 1159cfdda9d7SSteve Wise req = (struct fw_ofld_tx_data_wr *) skb_put(skb, wrlen); 1160cfdda9d7SSteve Wise memset(req, 0, wrlen); 1161cfdda9d7SSteve Wise req->op_to_immdlen = cpu_to_be32( 1162e2ac9628SHariprasad Shenai FW_WR_OP_V(FW_OFLD_TX_DATA_WR) | 1163e2ac9628SHariprasad Shenai FW_WR_COMPL_F | 1164e2ac9628SHariprasad Shenai FW_WR_IMMDLEN_V(mpalen)); 1165cfdda9d7SSteve Wise req->flowid_len16 = cpu_to_be32( 1166e2ac9628SHariprasad Shenai FW_WR_FLOWID_V(ep->hwtid) | 1167e2ac9628SHariprasad Shenai FW_WR_LEN16_V(wrlen >> 4)); 1168cfdda9d7SSteve Wise req->plen = cpu_to_be32(mpalen); 1169cfdda9d7SSteve Wise req->tunnel_to_proxy = cpu_to_be32( 1170e2ac9628SHariprasad Shenai FW_OFLD_TX_DATA_WR_FLUSH_F | 1171e2ac9628SHariprasad Shenai FW_OFLD_TX_DATA_WR_SHOVE_F); 1172cfdda9d7SSteve Wise 1173cfdda9d7SSteve Wise mpa = (struct mpa_message *)(req + 1); 1174cfdda9d7SSteve Wise memset(mpa, 0, sizeof(*mpa)); 1175cfdda9d7SSteve Wise memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 11763d4e7994SHariprasad S mpa->flags = 0; 11773d4e7994SHariprasad S if (ep->mpa_attr.crc_enabled) 11783d4e7994SHariprasad S mpa->flags |= MPA_CRC; 11793d4e7994SHariprasad S if (ep->mpa_attr.recv_marker_enabled) 11803d4e7994SHariprasad S mpa->flags |= MPA_MARKERS; 1181d2fe99e8SKumar Sanghvi mpa->revision = ep->mpa_attr.version; 1182cfdda9d7SSteve Wise mpa->private_data_size = htons(plen); 1183d2fe99e8SKumar Sanghvi 1184d2fe99e8SKumar Sanghvi if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 1185d2fe99e8SKumar Sanghvi mpa->flags |= MPA_ENHANCED_RDMA_CONN; 1186f747c34aSRoland Dreier mpa->private_data_size = htons(ntohs(mpa->private_data_size) + 1187f747c34aSRoland Dreier sizeof (struct mpa_v2_conn_params)); 1188d2fe99e8SKumar Sanghvi mpa_v2_params.ird = htons((u16)ep->ird); 1189d2fe99e8SKumar Sanghvi mpa_v2_params.ord = htons((u16)ep->ord); 1190d2fe99e8SKumar Sanghvi if (peer2peer && (ep->mpa_attr.p2p_type != 1191d2fe99e8SKumar Sanghvi FW_RI_INIT_P2PTYPE_DISABLED)) { 1192d2fe99e8SKumar Sanghvi mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); 1193d2fe99e8SKumar Sanghvi 1194d2fe99e8SKumar Sanghvi if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) 1195d2fe99e8SKumar Sanghvi mpa_v2_params.ord |= 1196d2fe99e8SKumar Sanghvi htons(MPA_V2_RDMA_WRITE_RTR); 1197d2fe99e8SKumar Sanghvi else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) 1198d2fe99e8SKumar Sanghvi mpa_v2_params.ord |= 1199d2fe99e8SKumar Sanghvi htons(MPA_V2_RDMA_READ_RTR); 1200d2fe99e8SKumar Sanghvi } 1201d2fe99e8SKumar Sanghvi 1202d2fe99e8SKumar Sanghvi memcpy(mpa->private_data, &mpa_v2_params, 1203d2fe99e8SKumar Sanghvi sizeof(struct mpa_v2_conn_params)); 1204d2fe99e8SKumar Sanghvi 1205d2fe99e8SKumar Sanghvi if (ep->plen) 1206d2fe99e8SKumar Sanghvi memcpy(mpa->private_data + 1207d2fe99e8SKumar Sanghvi sizeof(struct mpa_v2_conn_params), pdata, plen); 1208d2fe99e8SKumar Sanghvi } else 1209cfdda9d7SSteve Wise if (plen) 1210cfdda9d7SSteve Wise memcpy(mpa->private_data, pdata, plen); 1211cfdda9d7SSteve Wise 1212cfdda9d7SSteve Wise /* 1213cfdda9d7SSteve Wise * Reference the mpa skb. This ensures the data area 1214cfdda9d7SSteve Wise * will remain in memory until the hw acks the tx. 1215cfdda9d7SSteve Wise * Function fw4_ack() will deref it. 1216cfdda9d7SSteve Wise */ 1217cfdda9d7SSteve Wise skb_get(skb); 121864bec74aSHariprasad S t4_set_arp_err_handler(skb, NULL, mpa_start_arp_failure); 1219cfdda9d7SSteve Wise ep->mpa_skb = skb; 1220a7db89ebSSteve Wise __state_set(&ep->com, MPA_REP_SENT); 12219c88aa00SSteve Wise ep->snd_seq += mpalen; 1222cfdda9d7SSteve Wise return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); 1223cfdda9d7SSteve Wise } 1224cfdda9d7SSteve Wise 1225cfdda9d7SSteve Wise static int act_establish(struct c4iw_dev *dev, struct sk_buff *skb) 1226cfdda9d7SSteve Wise { 1227cfdda9d7SSteve Wise struct c4iw_ep *ep; 1228cfdda9d7SSteve Wise struct cpl_act_establish *req = cplhdr(skb); 1229cfdda9d7SSteve Wise unsigned int tid = GET_TID(req); 12306c53e938SHariprasad Shenai unsigned int atid = TID_TID_G(ntohl(req->tos_atid)); 1231cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 1232fef4422dSHariprasad S int ret; 1233cfdda9d7SSteve Wise 1234cfdda9d7SSteve Wise ep = lookup_atid(t, atid); 1235cfdda9d7SSteve Wise 1236cfdda9d7SSteve Wise PDBG("%s ep %p tid %u snd_isn %u rcv_isn %u\n", __func__, ep, tid, 1237cfdda9d7SSteve Wise be32_to_cpu(req->snd_isn), be32_to_cpu(req->rcv_isn)); 1238cfdda9d7SSteve Wise 1239a7db89ebSSteve Wise mutex_lock(&ep->com.mutex); 1240cfdda9d7SSteve Wise dst_confirm(ep->dst); 1241cfdda9d7SSteve Wise 1242cfdda9d7SSteve Wise /* setup the hwtid for this connection */ 1243cfdda9d7SSteve Wise ep->hwtid = tid; 1244cfdda9d7SSteve Wise cxgb4_insert_tid(t, ep, tid); 1245944661ddSHariprasad S insert_ep_tid(ep); 1246cfdda9d7SSteve Wise 1247cfdda9d7SSteve Wise ep->snd_seq = be32_to_cpu(req->snd_isn); 1248cfdda9d7SSteve Wise ep->rcv_seq = be32_to_cpu(req->rcv_isn); 1249cfdda9d7SSteve Wise 1250cfdda9d7SSteve Wise set_emss(ep, ntohs(req->tcp_opt)); 1251cfdda9d7SSteve Wise 1252cfdda9d7SSteve Wise /* dealloc the atid */ 1253793dad94SVipul Pandya remove_handle(ep->com.dev, &ep->com.dev->atid_idr, atid); 1254cfdda9d7SSteve Wise cxgb4_free_atid(t, atid); 1255793dad94SVipul Pandya set_bit(ACT_ESTAB, &ep->com.history); 1256cfdda9d7SSteve Wise 1257cfdda9d7SSteve Wise /* start MPA negotiation */ 12584a740838SHariprasad S ret = send_flowc(ep); 1259fef4422dSHariprasad S if (ret) 1260fef4422dSHariprasad S goto err; 1261d2fe99e8SKumar Sanghvi if (ep->retry_with_mpa_v1) 1262caa6c9f2SHariprasad S ret = send_mpa_req(ep, skb, 1); 1263d2fe99e8SKumar Sanghvi else 1264caa6c9f2SHariprasad S ret = send_mpa_req(ep, skb, mpa_rev); 1265caa6c9f2SHariprasad S if (ret) 1266caa6c9f2SHariprasad S goto err; 1267a7db89ebSSteve Wise mutex_unlock(&ep->com.mutex); 1268cfdda9d7SSteve Wise return 0; 1269fef4422dSHariprasad S err: 1270fef4422dSHariprasad S mutex_unlock(&ep->com.mutex); 1271fef4422dSHariprasad S connect_reply_upcall(ep, -ENOMEM); 1272fef4422dSHariprasad S c4iw_ep_disconnect(ep, 0, GFP_KERNEL); 1273fef4422dSHariprasad S return 0; 1274cfdda9d7SSteve Wise } 1275cfdda9d7SSteve Wise 1276be13b2dfSSteve Wise static void close_complete_upcall(struct c4iw_ep *ep, int status) 1277cfdda9d7SSteve Wise { 1278cfdda9d7SSteve Wise struct iw_cm_event event; 1279cfdda9d7SSteve Wise 1280cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 1281cfdda9d7SSteve Wise memset(&event, 0, sizeof(event)); 1282cfdda9d7SSteve Wise event.event = IW_CM_EVENT_CLOSE; 1283be13b2dfSSteve Wise event.status = status; 1284cfdda9d7SSteve Wise if (ep->com.cm_id) { 1285cfdda9d7SSteve Wise PDBG("close complete delivered ep %p cm_id %p tid %u\n", 1286cfdda9d7SSteve Wise ep, ep->com.cm_id, ep->hwtid); 1287cfdda9d7SSteve Wise ep->com.cm_id->event_handler(ep->com.cm_id, &event); 12889ca6f7cfSHariprasad S deref_cm_id(&ep->com); 1289793dad94SVipul Pandya set_bit(CLOSE_UPCALL, &ep->com.history); 1290cfdda9d7SSteve Wise } 1291cfdda9d7SSteve Wise } 1292cfdda9d7SSteve Wise 1293cfdda9d7SSteve Wise static void peer_close_upcall(struct c4iw_ep *ep) 1294cfdda9d7SSteve Wise { 1295cfdda9d7SSteve Wise struct iw_cm_event event; 1296cfdda9d7SSteve Wise 1297cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 1298cfdda9d7SSteve Wise memset(&event, 0, sizeof(event)); 1299cfdda9d7SSteve Wise event.event = IW_CM_EVENT_DISCONNECT; 1300cfdda9d7SSteve Wise if (ep->com.cm_id) { 1301cfdda9d7SSteve Wise PDBG("peer close delivered ep %p cm_id %p tid %u\n", 1302cfdda9d7SSteve Wise ep, ep->com.cm_id, ep->hwtid); 1303cfdda9d7SSteve Wise ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1304793dad94SVipul Pandya set_bit(DISCONN_UPCALL, &ep->com.history); 1305cfdda9d7SSteve Wise } 1306cfdda9d7SSteve Wise } 1307cfdda9d7SSteve Wise 1308cfdda9d7SSteve Wise static void peer_abort_upcall(struct c4iw_ep *ep) 1309cfdda9d7SSteve Wise { 1310cfdda9d7SSteve Wise struct iw_cm_event event; 1311cfdda9d7SSteve Wise 1312cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 1313cfdda9d7SSteve Wise memset(&event, 0, sizeof(event)); 1314cfdda9d7SSteve Wise event.event = IW_CM_EVENT_CLOSE; 1315cfdda9d7SSteve Wise event.status = -ECONNRESET; 1316cfdda9d7SSteve Wise if (ep->com.cm_id) { 1317cfdda9d7SSteve Wise PDBG("abort delivered ep %p cm_id %p tid %u\n", ep, 1318cfdda9d7SSteve Wise ep->com.cm_id, ep->hwtid); 1319cfdda9d7SSteve Wise ep->com.cm_id->event_handler(ep->com.cm_id, &event); 13209ca6f7cfSHariprasad S deref_cm_id(&ep->com); 1321793dad94SVipul Pandya set_bit(ABORT_UPCALL, &ep->com.history); 1322cfdda9d7SSteve Wise } 1323cfdda9d7SSteve Wise } 1324cfdda9d7SSteve Wise 1325cfdda9d7SSteve Wise static void connect_reply_upcall(struct c4iw_ep *ep, int status) 1326cfdda9d7SSteve Wise { 1327cfdda9d7SSteve Wise struct iw_cm_event event; 1328cfdda9d7SSteve Wise 1329cfdda9d7SSteve Wise PDBG("%s ep %p tid %u status %d\n", __func__, ep, ep->hwtid, status); 1330cfdda9d7SSteve Wise memset(&event, 0, sizeof(event)); 1331cfdda9d7SSteve Wise event.event = IW_CM_EVENT_CONNECT_REPLY; 1332cfdda9d7SSteve Wise event.status = status; 133324d44a39SSteve Wise memcpy(&event.local_addr, &ep->com.local_addr, 133424d44a39SSteve Wise sizeof(ep->com.local_addr)); 133524d44a39SSteve Wise memcpy(&event.remote_addr, &ep->com.remote_addr, 133624d44a39SSteve Wise sizeof(ep->com.remote_addr)); 1337cfdda9d7SSteve Wise 1338cfdda9d7SSteve Wise if ((status == 0) || (status == -ECONNREFUSED)) { 1339d2fe99e8SKumar Sanghvi if (!ep->tried_with_mpa_v1) { 1340d2fe99e8SKumar Sanghvi /* this means MPA_v2 is used */ 1341158c776dSHariprasad S event.ord = ep->ird; 1342158c776dSHariprasad S event.ird = ep->ord; 1343d2fe99e8SKumar Sanghvi event.private_data_len = ep->plen - 1344d2fe99e8SKumar Sanghvi sizeof(struct mpa_v2_conn_params); 1345d2fe99e8SKumar Sanghvi event.private_data = ep->mpa_pkt + 1346d2fe99e8SKumar Sanghvi sizeof(struct mpa_message) + 1347d2fe99e8SKumar Sanghvi sizeof(struct mpa_v2_conn_params); 1348d2fe99e8SKumar Sanghvi } else { 1349d2fe99e8SKumar Sanghvi /* this means MPA_v1 is used */ 1350158c776dSHariprasad S event.ord = cur_max_read_depth(ep->com.dev); 1351158c776dSHariprasad S event.ird = cur_max_read_depth(ep->com.dev); 1352cfdda9d7SSteve Wise event.private_data_len = ep->plen; 1353d2fe99e8SKumar Sanghvi event.private_data = ep->mpa_pkt + 1354d2fe99e8SKumar Sanghvi sizeof(struct mpa_message); 1355d2fe99e8SKumar Sanghvi } 1356cfdda9d7SSteve Wise } 135785963e4cSRoland Dreier 1358cfdda9d7SSteve Wise PDBG("%s ep %p tid %u status %d\n", __func__, ep, 1359cfdda9d7SSteve Wise ep->hwtid, status); 1360793dad94SVipul Pandya set_bit(CONN_RPL_UPCALL, &ep->com.history); 1361cfdda9d7SSteve Wise ep->com.cm_id->event_handler(ep->com.cm_id, &event); 136285963e4cSRoland Dreier 13639ca6f7cfSHariprasad S if (status < 0) 13649ca6f7cfSHariprasad S deref_cm_id(&ep->com); 1365cfdda9d7SSteve Wise } 1366cfdda9d7SSteve Wise 1367be13b2dfSSteve Wise static int connect_request_upcall(struct c4iw_ep *ep) 1368cfdda9d7SSteve Wise { 1369cfdda9d7SSteve Wise struct iw_cm_event event; 1370be13b2dfSSteve Wise int ret; 1371cfdda9d7SSteve Wise 1372cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 1373cfdda9d7SSteve Wise memset(&event, 0, sizeof(event)); 1374cfdda9d7SSteve Wise event.event = IW_CM_EVENT_CONNECT_REQUEST; 137524d44a39SSteve Wise memcpy(&event.local_addr, &ep->com.local_addr, 137624d44a39SSteve Wise sizeof(ep->com.local_addr)); 137724d44a39SSteve Wise memcpy(&event.remote_addr, &ep->com.remote_addr, 137824d44a39SSteve Wise sizeof(ep->com.remote_addr)); 1379d2fe99e8SKumar Sanghvi event.provider_data = ep; 1380d2fe99e8SKumar Sanghvi if (!ep->tried_with_mpa_v1) { 1381d2fe99e8SKumar Sanghvi /* this means MPA_v2 is used */ 1382d2fe99e8SKumar Sanghvi event.ord = ep->ord; 1383d2fe99e8SKumar Sanghvi event.ird = ep->ird; 1384d2fe99e8SKumar Sanghvi event.private_data_len = ep->plen - 1385d2fe99e8SKumar Sanghvi sizeof(struct mpa_v2_conn_params); 1386d2fe99e8SKumar Sanghvi event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) + 1387d2fe99e8SKumar Sanghvi sizeof(struct mpa_v2_conn_params); 1388d2fe99e8SKumar Sanghvi } else { 1389d2fe99e8SKumar Sanghvi /* this means MPA_v1 is used. Send max supported */ 13904c2c5763SHariprasad Shenai event.ord = cur_max_read_depth(ep->com.dev); 13914c2c5763SHariprasad Shenai event.ird = cur_max_read_depth(ep->com.dev); 1392cfdda9d7SSteve Wise event.private_data_len = ep->plen; 1393cfdda9d7SSteve Wise event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); 1394d2fe99e8SKumar Sanghvi } 1395cfdda9d7SSteve Wise c4iw_get_ep(&ep->com); 1396be13b2dfSSteve Wise ret = ep->parent_ep->com.cm_id->event_handler(ep->parent_ep->com.cm_id, 1397cfdda9d7SSteve Wise &event); 1398be13b2dfSSteve Wise if (ret) 1399be13b2dfSSteve Wise c4iw_put_ep(&ep->com); 1400793dad94SVipul Pandya set_bit(CONNREQ_UPCALL, &ep->com.history); 1401cfdda9d7SSteve Wise c4iw_put_ep(&ep->parent_ep->com); 1402be13b2dfSSteve Wise return ret; 1403cfdda9d7SSteve Wise } 1404cfdda9d7SSteve Wise 1405cfdda9d7SSteve Wise static void established_upcall(struct c4iw_ep *ep) 1406cfdda9d7SSteve Wise { 1407cfdda9d7SSteve Wise struct iw_cm_event event; 1408cfdda9d7SSteve Wise 1409cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 1410cfdda9d7SSteve Wise memset(&event, 0, sizeof(event)); 1411cfdda9d7SSteve Wise event.event = IW_CM_EVENT_ESTABLISHED; 14123dd9a5dcSHariprasad S event.ird = ep->ord; 14133dd9a5dcSHariprasad S event.ord = ep->ird; 1414cfdda9d7SSteve Wise if (ep->com.cm_id) { 1415cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 1416cfdda9d7SSteve Wise ep->com.cm_id->event_handler(ep->com.cm_id, &event); 1417793dad94SVipul Pandya set_bit(ESTAB_UPCALL, &ep->com.history); 1418cfdda9d7SSteve Wise } 1419cfdda9d7SSteve Wise } 1420cfdda9d7SSteve Wise 1421cfdda9d7SSteve Wise static int update_rx_credits(struct c4iw_ep *ep, u32 credits) 1422cfdda9d7SSteve Wise { 1423cfdda9d7SSteve Wise struct cpl_rx_data_ack *req; 1424cfdda9d7SSteve Wise struct sk_buff *skb; 1425cfdda9d7SSteve Wise int wrlen = roundup(sizeof *req, 16); 1426cfdda9d7SSteve Wise 1427cfdda9d7SSteve Wise PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits); 1428cfdda9d7SSteve Wise skb = get_skb(NULL, wrlen, GFP_KERNEL); 1429cfdda9d7SSteve Wise if (!skb) { 1430cfdda9d7SSteve Wise printk(KERN_ERR MOD "update_rx_credits - cannot alloc skb!\n"); 1431cfdda9d7SSteve Wise return 0; 1432cfdda9d7SSteve Wise } 1433cfdda9d7SSteve Wise 1434b408ff28SHariprasad Shenai /* 1435b408ff28SHariprasad Shenai * If we couldn't specify the entire rcv window at connection setup 1436b408ff28SHariprasad Shenai * due to the limit in the number of bits in the RCV_BUFSIZ field, 1437b408ff28SHariprasad Shenai * then add the overage in to the credits returned. 1438b408ff28SHariprasad Shenai */ 1439d7990b0cSAnish Bhatt if (ep->rcv_win > RCV_BUFSIZ_M * 1024) 1440d7990b0cSAnish Bhatt credits += ep->rcv_win - RCV_BUFSIZ_M * 1024; 1441b408ff28SHariprasad Shenai 1442cfdda9d7SSteve Wise req = (struct cpl_rx_data_ack *) skb_put(skb, wrlen); 1443cfdda9d7SSteve Wise memset(req, 0, wrlen); 1444cfdda9d7SSteve Wise INIT_TP_WR(req, ep->hwtid); 1445cfdda9d7SSteve Wise OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_RX_DATA_ACK, 1446cfdda9d7SSteve Wise ep->hwtid)); 1447d7990b0cSAnish Bhatt req->credit_dack = cpu_to_be32(credits | RX_FORCE_ACK_F | 1448cf7fe64aSHariprasad Shenai RX_DACK_CHANGE_F | 1449cf7fe64aSHariprasad Shenai RX_DACK_MODE_V(dack_mode)); 1450d4f1a5c6SSteve Wise set_wr_txq(skb, CPL_PRIORITY_ACK, ep->ctrlq_idx); 1451cfdda9d7SSteve Wise c4iw_ofld_send(&ep->com.dev->rdev, skb); 1452cfdda9d7SSteve Wise return credits; 1453cfdda9d7SSteve Wise } 1454cfdda9d7SSteve Wise 14554c2c5763SHariprasad Shenai #define RELAXED_IRD_NEGOTIATION 1 14564c2c5763SHariprasad Shenai 1457f8e1e1d1SHariprasad S /* 1458f8e1e1d1SHariprasad S * process_mpa_reply - process streaming mode MPA reply 1459f8e1e1d1SHariprasad S * 1460f8e1e1d1SHariprasad S * Returns: 1461f8e1e1d1SHariprasad S * 1462f8e1e1d1SHariprasad S * 0 upon success indicating a connect request was delivered to the ULP 1463f8e1e1d1SHariprasad S * or the mpa request is incomplete but valid so far. 1464f8e1e1d1SHariprasad S * 1465f8e1e1d1SHariprasad S * 1 if a failure requires the caller to close the connection. 1466f8e1e1d1SHariprasad S * 1467f8e1e1d1SHariprasad S * 2 if a failure requires the caller to abort the connection. 1468f8e1e1d1SHariprasad S */ 1469cc18b939SSteve Wise static int process_mpa_reply(struct c4iw_ep *ep, struct sk_buff *skb) 1470cfdda9d7SSteve Wise { 1471cfdda9d7SSteve Wise struct mpa_message *mpa; 1472d2fe99e8SKumar Sanghvi struct mpa_v2_conn_params *mpa_v2_params; 1473cfdda9d7SSteve Wise u16 plen; 1474d2fe99e8SKumar Sanghvi u16 resp_ird, resp_ord; 1475d2fe99e8SKumar Sanghvi u8 rtr_mismatch = 0, insuff_ird = 0; 1476cfdda9d7SSteve Wise struct c4iw_qp_attributes attrs; 1477cfdda9d7SSteve Wise enum c4iw_qp_attr_mask mask; 1478cfdda9d7SSteve Wise int err; 1479cc18b939SSteve Wise int disconnect = 0; 1480cfdda9d7SSteve Wise 1481cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 1482cfdda9d7SSteve Wise 1483cfdda9d7SSteve Wise /* 1484cfdda9d7SSteve Wise * If we get more than the supported amount of private data 1485cfdda9d7SSteve Wise * then we must fail this connection. 1486cfdda9d7SSteve Wise */ 1487cfdda9d7SSteve Wise if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) { 1488cfdda9d7SSteve Wise err = -EINVAL; 1489da1cecdfSHariprasad S goto err_stop_timer; 1490cfdda9d7SSteve Wise } 1491cfdda9d7SSteve Wise 1492cfdda9d7SSteve Wise /* 1493cfdda9d7SSteve Wise * copy the new data into our accumulation buffer. 1494cfdda9d7SSteve Wise */ 1495cfdda9d7SSteve Wise skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]), 1496cfdda9d7SSteve Wise skb->len); 1497cfdda9d7SSteve Wise ep->mpa_pkt_len += skb->len; 1498cfdda9d7SSteve Wise 1499cfdda9d7SSteve Wise /* 1500cfdda9d7SSteve Wise * if we don't even have the mpa message, then bail. 1501cfdda9d7SSteve Wise */ 1502cfdda9d7SSteve Wise if (ep->mpa_pkt_len < sizeof(*mpa)) 1503cc18b939SSteve Wise return 0; 1504cfdda9d7SSteve Wise mpa = (struct mpa_message *) ep->mpa_pkt; 1505cfdda9d7SSteve Wise 1506cfdda9d7SSteve Wise /* Validate MPA header. */ 1507d2fe99e8SKumar Sanghvi if (mpa->revision > mpa_rev) { 1508d2fe99e8SKumar Sanghvi printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d," 1509d2fe99e8SKumar Sanghvi " Received = %d\n", __func__, mpa_rev, mpa->revision); 1510cfdda9d7SSteve Wise err = -EPROTO; 1511da1cecdfSHariprasad S goto err_stop_timer; 1512cfdda9d7SSteve Wise } 1513cfdda9d7SSteve Wise if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) { 1514cfdda9d7SSteve Wise err = -EPROTO; 1515da1cecdfSHariprasad S goto err_stop_timer; 1516cfdda9d7SSteve Wise } 1517cfdda9d7SSteve Wise 1518cfdda9d7SSteve Wise plen = ntohs(mpa->private_data_size); 1519cfdda9d7SSteve Wise 1520cfdda9d7SSteve Wise /* 1521cfdda9d7SSteve Wise * Fail if there's too much private data. 1522cfdda9d7SSteve Wise */ 1523cfdda9d7SSteve Wise if (plen > MPA_MAX_PRIVATE_DATA) { 1524cfdda9d7SSteve Wise err = -EPROTO; 1525da1cecdfSHariprasad S goto err_stop_timer; 1526cfdda9d7SSteve Wise } 1527cfdda9d7SSteve Wise 1528cfdda9d7SSteve Wise /* 1529cfdda9d7SSteve Wise * If plen does not account for pkt size 1530cfdda9d7SSteve Wise */ 1531cfdda9d7SSteve Wise if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { 1532cfdda9d7SSteve Wise err = -EPROTO; 1533da1cecdfSHariprasad S goto err_stop_timer; 1534cfdda9d7SSteve Wise } 1535cfdda9d7SSteve Wise 1536cfdda9d7SSteve Wise ep->plen = (u8) plen; 1537cfdda9d7SSteve Wise 1538cfdda9d7SSteve Wise /* 1539cfdda9d7SSteve Wise * If we don't have all the pdata yet, then bail. 1540cfdda9d7SSteve Wise * We'll continue process when more data arrives. 1541cfdda9d7SSteve Wise */ 1542cfdda9d7SSteve Wise if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) 1543cc18b939SSteve Wise return 0; 1544cfdda9d7SSteve Wise 1545cfdda9d7SSteve Wise if (mpa->flags & MPA_REJECT) { 1546cfdda9d7SSteve Wise err = -ECONNREFUSED; 1547da1cecdfSHariprasad S goto err_stop_timer; 1548cfdda9d7SSteve Wise } 1549cfdda9d7SSteve Wise 1550cfdda9d7SSteve Wise /* 1551da1cecdfSHariprasad S * Stop mpa timer. If it expired, then 1552da1cecdfSHariprasad S * we ignore the MPA reply. process_timeout() 1553da1cecdfSHariprasad S * will abort the connection. 1554da1cecdfSHariprasad S */ 1555da1cecdfSHariprasad S if (stop_ep_timer(ep)) 1556da1cecdfSHariprasad S return 0; 1557da1cecdfSHariprasad S 1558da1cecdfSHariprasad S /* 1559cfdda9d7SSteve Wise * If we get here we have accumulated the entire mpa 1560cfdda9d7SSteve Wise * start reply message including private data. And 1561cfdda9d7SSteve Wise * the MPA header is valid. 1562cfdda9d7SSteve Wise */ 1563c529fb50SSteve Wise __state_set(&ep->com, FPDU_MODE); 1564cfdda9d7SSteve Wise ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 1565cfdda9d7SSteve Wise ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 1566d2fe99e8SKumar Sanghvi ep->mpa_attr.version = mpa->revision; 1567d2fe99e8SKumar Sanghvi ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 1568d2fe99e8SKumar Sanghvi 1569d2fe99e8SKumar Sanghvi if (mpa->revision == 2) { 1570d2fe99e8SKumar Sanghvi ep->mpa_attr.enhanced_rdma_conn = 1571d2fe99e8SKumar Sanghvi mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; 1572d2fe99e8SKumar Sanghvi if (ep->mpa_attr.enhanced_rdma_conn) { 1573d2fe99e8SKumar Sanghvi mpa_v2_params = (struct mpa_v2_conn_params *) 1574d2fe99e8SKumar Sanghvi (ep->mpa_pkt + sizeof(*mpa)); 1575d2fe99e8SKumar Sanghvi resp_ird = ntohs(mpa_v2_params->ird) & 1576d2fe99e8SKumar Sanghvi MPA_V2_IRD_ORD_MASK; 1577d2fe99e8SKumar Sanghvi resp_ord = ntohs(mpa_v2_params->ord) & 1578d2fe99e8SKumar Sanghvi MPA_V2_IRD_ORD_MASK; 15794c2c5763SHariprasad Shenai PDBG("%s responder ird %u ord %u ep ird %u ord %u\n", 15804c2c5763SHariprasad Shenai __func__, resp_ird, resp_ord, ep->ird, ep->ord); 1581d2fe99e8SKumar Sanghvi 1582d2fe99e8SKumar Sanghvi /* 1583d2fe99e8SKumar Sanghvi * This is a double-check. Ideally, below checks are 1584d2fe99e8SKumar Sanghvi * not required since ird/ord stuff has been taken 1585d2fe99e8SKumar Sanghvi * care of in c4iw_accept_cr 1586d2fe99e8SKumar Sanghvi */ 15874c2c5763SHariprasad Shenai if (ep->ird < resp_ord) { 15884c2c5763SHariprasad Shenai if (RELAXED_IRD_NEGOTIATION && resp_ord <= 15894c2c5763SHariprasad Shenai ep->com.dev->rdev.lldi.max_ordird_qp) 15904c2c5763SHariprasad Shenai ep->ird = resp_ord; 15914c2c5763SHariprasad Shenai else 15924c2c5763SHariprasad Shenai insuff_ird = 1; 15934c2c5763SHariprasad Shenai } else if (ep->ird > resp_ord) { 15944c2c5763SHariprasad Shenai ep->ird = resp_ord; 15954c2c5763SHariprasad Shenai } 15964c2c5763SHariprasad Shenai if (ep->ord > resp_ird) { 15974c2c5763SHariprasad Shenai if (RELAXED_IRD_NEGOTIATION) 15984c2c5763SHariprasad Shenai ep->ord = resp_ird; 15994c2c5763SHariprasad Shenai else 16004c2c5763SHariprasad Shenai insuff_ird = 1; 16014c2c5763SHariprasad Shenai } 16024c2c5763SHariprasad Shenai if (insuff_ird) { 1603d2fe99e8SKumar Sanghvi err = -ENOMEM; 1604d2fe99e8SKumar Sanghvi ep->ird = resp_ord; 1605d2fe99e8SKumar Sanghvi ep->ord = resp_ird; 1606d2fe99e8SKumar Sanghvi } 1607d2fe99e8SKumar Sanghvi 1608d2fe99e8SKumar Sanghvi if (ntohs(mpa_v2_params->ird) & 1609d2fe99e8SKumar Sanghvi MPA_V2_PEER2PEER_MODEL) { 1610d2fe99e8SKumar Sanghvi if (ntohs(mpa_v2_params->ord) & 1611d2fe99e8SKumar Sanghvi MPA_V2_RDMA_WRITE_RTR) 1612d2fe99e8SKumar Sanghvi ep->mpa_attr.p2p_type = 1613d2fe99e8SKumar Sanghvi FW_RI_INIT_P2PTYPE_RDMA_WRITE; 1614d2fe99e8SKumar Sanghvi else if (ntohs(mpa_v2_params->ord) & 1615d2fe99e8SKumar Sanghvi MPA_V2_RDMA_READ_RTR) 1616d2fe99e8SKumar Sanghvi ep->mpa_attr.p2p_type = 1617d2fe99e8SKumar Sanghvi FW_RI_INIT_P2PTYPE_READ_REQ; 1618d2fe99e8SKumar Sanghvi } 1619d2fe99e8SKumar Sanghvi } 1620d2fe99e8SKumar Sanghvi } else if (mpa->revision == 1) 1621d2fe99e8SKumar Sanghvi if (peer2peer) 1622d2fe99e8SKumar Sanghvi ep->mpa_attr.p2p_type = p2p_type; 1623d2fe99e8SKumar Sanghvi 1624cfdda9d7SSteve Wise PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " 1625d2fe99e8SKumar Sanghvi "xmit_marker_enabled=%d, version=%d p2p_type=%d local-p2p_type = " 1626d2fe99e8SKumar Sanghvi "%d\n", __func__, ep->mpa_attr.crc_enabled, 1627d2fe99e8SKumar Sanghvi ep->mpa_attr.recv_marker_enabled, 1628d2fe99e8SKumar Sanghvi ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, 1629d2fe99e8SKumar Sanghvi ep->mpa_attr.p2p_type, p2p_type); 1630d2fe99e8SKumar Sanghvi 1631d2fe99e8SKumar Sanghvi /* 1632d2fe99e8SKumar Sanghvi * If responder's RTR does not match with that of initiator, assign 1633d2fe99e8SKumar Sanghvi * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not 1634d2fe99e8SKumar Sanghvi * generated when moving QP to RTS state. 1635d2fe99e8SKumar Sanghvi * A TERM message will be sent after QP has moved to RTS state 1636d2fe99e8SKumar Sanghvi */ 163791018f86SKumar Sanghvi if ((ep->mpa_attr.version == 2) && peer2peer && 1638d2fe99e8SKumar Sanghvi (ep->mpa_attr.p2p_type != p2p_type)) { 1639d2fe99e8SKumar Sanghvi ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 1640d2fe99e8SKumar Sanghvi rtr_mismatch = 1; 1641d2fe99e8SKumar Sanghvi } 1642cfdda9d7SSteve Wise 1643cfdda9d7SSteve Wise attrs.mpa_attr = ep->mpa_attr; 1644cfdda9d7SSteve Wise attrs.max_ird = ep->ird; 1645cfdda9d7SSteve Wise attrs.max_ord = ep->ord; 1646cfdda9d7SSteve Wise attrs.llp_stream_handle = ep; 1647cfdda9d7SSteve Wise attrs.next_state = C4IW_QP_STATE_RTS; 1648cfdda9d7SSteve Wise 1649cfdda9d7SSteve Wise mask = C4IW_QP_ATTR_NEXT_STATE | 1650cfdda9d7SSteve Wise C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR | 1651cfdda9d7SSteve Wise C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD; 1652cfdda9d7SSteve Wise 1653cfdda9d7SSteve Wise /* bind QP and TID with INIT_WR */ 1654cfdda9d7SSteve Wise err = c4iw_modify_qp(ep->com.qp->rhp, 1655cfdda9d7SSteve Wise ep->com.qp, mask, &attrs, 1); 1656cfdda9d7SSteve Wise if (err) 1657cfdda9d7SSteve Wise goto err; 1658d2fe99e8SKumar Sanghvi 1659d2fe99e8SKumar Sanghvi /* 1660d2fe99e8SKumar Sanghvi * If responder's RTR requirement did not match with what initiator 1661d2fe99e8SKumar Sanghvi * supports, generate TERM message 1662d2fe99e8SKumar Sanghvi */ 1663d2fe99e8SKumar Sanghvi if (rtr_mismatch) { 1664d2fe99e8SKumar Sanghvi printk(KERN_ERR "%s: RTR mismatch, sending TERM\n", __func__); 1665d2fe99e8SKumar Sanghvi attrs.layer_etype = LAYER_MPA | DDP_LLP; 1666d2fe99e8SKumar Sanghvi attrs.ecode = MPA_NOMATCH_RTR; 1667d2fe99e8SKumar Sanghvi attrs.next_state = C4IW_QP_STATE_TERMINATE; 1668cc18b939SSteve Wise attrs.send_term = 1; 1669d2fe99e8SKumar Sanghvi err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 1670cc18b939SSteve Wise C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 1671d2fe99e8SKumar Sanghvi err = -ENOMEM; 1672cc18b939SSteve Wise disconnect = 1; 1673d2fe99e8SKumar Sanghvi goto out; 1674d2fe99e8SKumar Sanghvi } 1675d2fe99e8SKumar Sanghvi 1676d2fe99e8SKumar Sanghvi /* 1677d2fe99e8SKumar Sanghvi * Generate TERM if initiator IRD is not sufficient for responder 1678d2fe99e8SKumar Sanghvi * provided ORD. Currently, we do the same behaviour even when 1679d2fe99e8SKumar Sanghvi * responder provided IRD is also not sufficient as regards to 1680d2fe99e8SKumar Sanghvi * initiator ORD. 1681d2fe99e8SKumar Sanghvi */ 1682d2fe99e8SKumar Sanghvi if (insuff_ird) { 1683d2fe99e8SKumar Sanghvi printk(KERN_ERR "%s: Insufficient IRD, sending TERM\n", 1684d2fe99e8SKumar Sanghvi __func__); 1685d2fe99e8SKumar Sanghvi attrs.layer_etype = LAYER_MPA | DDP_LLP; 1686d2fe99e8SKumar Sanghvi attrs.ecode = MPA_INSUFF_IRD; 1687d2fe99e8SKumar Sanghvi attrs.next_state = C4IW_QP_STATE_TERMINATE; 1688cc18b939SSteve Wise attrs.send_term = 1; 1689d2fe99e8SKumar Sanghvi err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 1690cc18b939SSteve Wise C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 1691d2fe99e8SKumar Sanghvi err = -ENOMEM; 1692cc18b939SSteve Wise disconnect = 1; 1693d2fe99e8SKumar Sanghvi goto out; 1694d2fe99e8SKumar Sanghvi } 1695cfdda9d7SSteve Wise goto out; 1696da1cecdfSHariprasad S err_stop_timer: 1697da1cecdfSHariprasad S stop_ep_timer(ep); 1698cfdda9d7SSteve Wise err: 1699f8e1e1d1SHariprasad S disconnect = 2; 1700cfdda9d7SSteve Wise out: 1701cfdda9d7SSteve Wise connect_reply_upcall(ep, err); 1702cc18b939SSteve Wise return disconnect; 1703cfdda9d7SSteve Wise } 1704cfdda9d7SSteve Wise 1705fd6aabe4SHariprasad S /* 1706fd6aabe4SHariprasad S * process_mpa_request - process streaming mode MPA request 1707fd6aabe4SHariprasad S * 1708fd6aabe4SHariprasad S * Returns: 1709fd6aabe4SHariprasad S * 1710fd6aabe4SHariprasad S * 0 upon success indicating a connect request was delivered to the ULP 1711fd6aabe4SHariprasad S * or the mpa request is incomplete but valid so far. 1712fd6aabe4SHariprasad S * 1713fd6aabe4SHariprasad S * 1 if a failure requires the caller to close the connection. 1714fd6aabe4SHariprasad S * 1715fd6aabe4SHariprasad S * 2 if a failure requires the caller to abort the connection. 1716fd6aabe4SHariprasad S */ 1717fd6aabe4SHariprasad S static int process_mpa_request(struct c4iw_ep *ep, struct sk_buff *skb) 1718cfdda9d7SSteve Wise { 1719cfdda9d7SSteve Wise struct mpa_message *mpa; 1720d2fe99e8SKumar Sanghvi struct mpa_v2_conn_params *mpa_v2_params; 1721cfdda9d7SSteve Wise u16 plen; 1722cfdda9d7SSteve Wise 1723cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 1724cfdda9d7SSteve Wise 1725cfdda9d7SSteve Wise /* 1726cfdda9d7SSteve Wise * If we get more than the supported amount of private data 1727cfdda9d7SSteve Wise * then we must fail this connection. 1728cfdda9d7SSteve Wise */ 1729fd6aabe4SHariprasad S if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) 1730fd6aabe4SHariprasad S goto err_stop_timer; 1731cfdda9d7SSteve Wise 1732cfdda9d7SSteve Wise PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__); 1733cfdda9d7SSteve Wise 1734cfdda9d7SSteve Wise /* 1735cfdda9d7SSteve Wise * Copy the new data into our accumulation buffer. 1736cfdda9d7SSteve Wise */ 1737cfdda9d7SSteve Wise skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]), 1738cfdda9d7SSteve Wise skb->len); 1739cfdda9d7SSteve Wise ep->mpa_pkt_len += skb->len; 1740cfdda9d7SSteve Wise 1741cfdda9d7SSteve Wise /* 1742cfdda9d7SSteve Wise * If we don't even have the mpa message, then bail. 1743cfdda9d7SSteve Wise * We'll continue process when more data arrives. 1744cfdda9d7SSteve Wise */ 1745cfdda9d7SSteve Wise if (ep->mpa_pkt_len < sizeof(*mpa)) 1746fd6aabe4SHariprasad S return 0; 1747cfdda9d7SSteve Wise 1748cfdda9d7SSteve Wise PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__); 1749cfdda9d7SSteve Wise mpa = (struct mpa_message *) ep->mpa_pkt; 1750cfdda9d7SSteve Wise 1751cfdda9d7SSteve Wise /* 1752cfdda9d7SSteve Wise * Validate MPA Header. 1753cfdda9d7SSteve Wise */ 1754d2fe99e8SKumar Sanghvi if (mpa->revision > mpa_rev) { 1755d2fe99e8SKumar Sanghvi printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d," 1756d2fe99e8SKumar Sanghvi " Received = %d\n", __func__, mpa_rev, mpa->revision); 1757fd6aabe4SHariprasad S goto err_stop_timer; 1758cfdda9d7SSteve Wise } 1759cfdda9d7SSteve Wise 1760fd6aabe4SHariprasad S if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) 1761fd6aabe4SHariprasad S goto err_stop_timer; 1762cfdda9d7SSteve Wise 1763cfdda9d7SSteve Wise plen = ntohs(mpa->private_data_size); 1764cfdda9d7SSteve Wise 1765cfdda9d7SSteve Wise /* 1766cfdda9d7SSteve Wise * Fail if there's too much private data. 1767cfdda9d7SSteve Wise */ 1768fd6aabe4SHariprasad S if (plen > MPA_MAX_PRIVATE_DATA) 1769fd6aabe4SHariprasad S goto err_stop_timer; 1770cfdda9d7SSteve Wise 1771cfdda9d7SSteve Wise /* 1772cfdda9d7SSteve Wise * If plen does not account for pkt size 1773cfdda9d7SSteve Wise */ 1774fd6aabe4SHariprasad S if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) 1775fd6aabe4SHariprasad S goto err_stop_timer; 1776cfdda9d7SSteve Wise ep->plen = (u8) plen; 1777cfdda9d7SSteve Wise 1778cfdda9d7SSteve Wise /* 1779cfdda9d7SSteve Wise * If we don't have all the pdata yet, then bail. 1780cfdda9d7SSteve Wise */ 1781cfdda9d7SSteve Wise if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) 1782fd6aabe4SHariprasad S return 0; 1783cfdda9d7SSteve Wise 1784cfdda9d7SSteve Wise /* 1785cfdda9d7SSteve Wise * If we get here we have accumulated the entire mpa 1786cfdda9d7SSteve Wise * start reply message including private data. 1787cfdda9d7SSteve Wise */ 1788cfdda9d7SSteve Wise ep->mpa_attr.initiator = 0; 1789cfdda9d7SSteve Wise ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 1790cfdda9d7SSteve Wise ep->mpa_attr.recv_marker_enabled = markers_enabled; 1791cfdda9d7SSteve Wise ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 1792d2fe99e8SKumar Sanghvi ep->mpa_attr.version = mpa->revision; 1793d2fe99e8SKumar Sanghvi if (mpa->revision == 1) 1794d2fe99e8SKumar Sanghvi ep->tried_with_mpa_v1 = 1; 1795d2fe99e8SKumar Sanghvi ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 1796d2fe99e8SKumar Sanghvi 1797d2fe99e8SKumar Sanghvi if (mpa->revision == 2) { 1798d2fe99e8SKumar Sanghvi ep->mpa_attr.enhanced_rdma_conn = 1799d2fe99e8SKumar Sanghvi mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; 1800d2fe99e8SKumar Sanghvi if (ep->mpa_attr.enhanced_rdma_conn) { 1801d2fe99e8SKumar Sanghvi mpa_v2_params = (struct mpa_v2_conn_params *) 1802d2fe99e8SKumar Sanghvi (ep->mpa_pkt + sizeof(*mpa)); 1803d2fe99e8SKumar Sanghvi ep->ird = ntohs(mpa_v2_params->ird) & 1804d2fe99e8SKumar Sanghvi MPA_V2_IRD_ORD_MASK; 18057f446abfSSteve Wise ep->ird = min_t(u32, ep->ird, 18067f446abfSSteve Wise cur_max_read_depth(ep->com.dev)); 1807d2fe99e8SKumar Sanghvi ep->ord = ntohs(mpa_v2_params->ord) & 1808d2fe99e8SKumar Sanghvi MPA_V2_IRD_ORD_MASK; 18097f446abfSSteve Wise ep->ord = min_t(u32, ep->ord, 18107f446abfSSteve Wise cur_max_read_depth(ep->com.dev)); 18114c2c5763SHariprasad Shenai PDBG("%s initiator ird %u ord %u\n", __func__, ep->ird, 18124c2c5763SHariprasad Shenai ep->ord); 1813d2fe99e8SKumar Sanghvi if (ntohs(mpa_v2_params->ird) & MPA_V2_PEER2PEER_MODEL) 1814d2fe99e8SKumar Sanghvi if (peer2peer) { 1815d2fe99e8SKumar Sanghvi if (ntohs(mpa_v2_params->ord) & 1816d2fe99e8SKumar Sanghvi MPA_V2_RDMA_WRITE_RTR) 1817d2fe99e8SKumar Sanghvi ep->mpa_attr.p2p_type = 1818d2fe99e8SKumar Sanghvi FW_RI_INIT_P2PTYPE_RDMA_WRITE; 1819d2fe99e8SKumar Sanghvi else if (ntohs(mpa_v2_params->ord) & 1820d2fe99e8SKumar Sanghvi MPA_V2_RDMA_READ_RTR) 1821d2fe99e8SKumar Sanghvi ep->mpa_attr.p2p_type = 1822d2fe99e8SKumar Sanghvi FW_RI_INIT_P2PTYPE_READ_REQ; 1823d2fe99e8SKumar Sanghvi } 1824d2fe99e8SKumar Sanghvi } 1825d2fe99e8SKumar Sanghvi } else if (mpa->revision == 1) 1826d2fe99e8SKumar Sanghvi if (peer2peer) 1827d2fe99e8SKumar Sanghvi ep->mpa_attr.p2p_type = p2p_type; 1828d2fe99e8SKumar Sanghvi 1829cfdda9d7SSteve Wise PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " 1830cfdda9d7SSteve Wise "xmit_marker_enabled=%d, version=%d p2p_type=%d\n", __func__, 1831cfdda9d7SSteve Wise ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, 1832cfdda9d7SSteve Wise ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, 1833cfdda9d7SSteve Wise ep->mpa_attr.p2p_type); 1834cfdda9d7SSteve Wise 1835c529fb50SSteve Wise __state_set(&ep->com, MPA_REQ_RCVD); 1836cfdda9d7SSteve Wise 1837cfdda9d7SSteve Wise /* drive upcall */ 1838e4b76a2aSHariprasad S mutex_lock_nested(&ep->parent_ep->com.mutex, SINGLE_DEPTH_NESTING); 1839be13b2dfSSteve Wise if (ep->parent_ep->com.state != DEAD) { 1840be13b2dfSSteve Wise if (connect_request_upcall(ep)) 1841fd6aabe4SHariprasad S goto err_unlock_parent; 1842be13b2dfSSteve Wise } else { 1843fd6aabe4SHariprasad S goto err_unlock_parent; 1844be13b2dfSSteve Wise } 1845be13b2dfSSteve Wise mutex_unlock(&ep->parent_ep->com.mutex); 1846fd6aabe4SHariprasad S return 0; 1847fd6aabe4SHariprasad S 1848fd6aabe4SHariprasad S err_unlock_parent: 1849fd6aabe4SHariprasad S mutex_unlock(&ep->parent_ep->com.mutex); 1850fd6aabe4SHariprasad S goto err_out; 1851fd6aabe4SHariprasad S err_stop_timer: 1852fd6aabe4SHariprasad S (void)stop_ep_timer(ep); 1853fd6aabe4SHariprasad S err_out: 1854fd6aabe4SHariprasad S return 2; 1855cfdda9d7SSteve Wise } 1856cfdda9d7SSteve Wise 1857cfdda9d7SSteve Wise static int rx_data(struct c4iw_dev *dev, struct sk_buff *skb) 1858cfdda9d7SSteve Wise { 1859cfdda9d7SSteve Wise struct c4iw_ep *ep; 1860cfdda9d7SSteve Wise struct cpl_rx_data *hdr = cplhdr(skb); 1861cfdda9d7SSteve Wise unsigned int dlen = ntohs(hdr->len); 1862cfdda9d7SSteve Wise unsigned int tid = GET_TID(hdr); 1863793dad94SVipul Pandya __u8 status = hdr->status; 1864cc18b939SSteve Wise int disconnect = 0; 1865cfdda9d7SSteve Wise 1866944661ddSHariprasad S ep = get_ep_from_tid(dev, tid); 1867977116c6SSteve Wise if (!ep) 1868977116c6SSteve Wise return 0; 1869cfdda9d7SSteve Wise PDBG("%s ep %p tid %u dlen %u\n", __func__, ep, ep->hwtid, dlen); 1870cfdda9d7SSteve Wise skb_pull(skb, sizeof(*hdr)); 1871cfdda9d7SSteve Wise skb_trim(skb, dlen); 1872c529fb50SSteve Wise mutex_lock(&ep->com.mutex); 1873cfdda9d7SSteve Wise 1874cfdda9d7SSteve Wise /* update RX credits */ 1875cfdda9d7SSteve Wise update_rx_credits(ep, dlen); 1876cfdda9d7SSteve Wise 1877c529fb50SSteve Wise switch (ep->com.state) { 1878cfdda9d7SSteve Wise case MPA_REQ_SENT: 187955abf8dfSVipul Pandya ep->rcv_seq += dlen; 1880cc18b939SSteve Wise disconnect = process_mpa_reply(ep, skb); 1881cfdda9d7SSteve Wise break; 1882cfdda9d7SSteve Wise case MPA_REQ_WAIT: 188355abf8dfSVipul Pandya ep->rcv_seq += dlen; 18844a4dd8dbSHariprasad S disconnect = process_mpa_request(ep, skb); 1885cfdda9d7SSteve Wise break; 18861557967bSVipul Pandya case FPDU_MODE: { 18871557967bSVipul Pandya struct c4iw_qp_attributes attrs; 18881557967bSVipul Pandya BUG_ON(!ep->com.qp); 1889e8e5b927SVipul Pandya if (status) 1890793dad94SVipul Pandya pr_err("%s Unexpected streaming data." \ 189104236df2SVipul Pandya " qpid %u ep %p state %d tid %u status %d\n", 189204236df2SVipul Pandya __func__, ep->com.qp->wq.sq.qid, ep, 1893c529fb50SSteve Wise ep->com.state, ep->hwtid, status); 189497d7ec0cSSteve Wise attrs.next_state = C4IW_QP_STATE_TERMINATE; 189555abf8dfSVipul Pandya c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 1896cc18b939SSteve Wise C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 1897cc18b939SSteve Wise disconnect = 1; 1898cfdda9d7SSteve Wise break; 1899cfdda9d7SSteve Wise } 19001557967bSVipul Pandya default: 19011557967bSVipul Pandya break; 19021557967bSVipul Pandya } 1903c529fb50SSteve Wise mutex_unlock(&ep->com.mutex); 1904cc18b939SSteve Wise if (disconnect) 19054a4dd8dbSHariprasad S c4iw_ep_disconnect(ep, disconnect == 2, GFP_KERNEL); 1906944661ddSHariprasad S c4iw_put_ep(&ep->com); 1907cfdda9d7SSteve Wise return 0; 1908cfdda9d7SSteve Wise } 1909cfdda9d7SSteve Wise 1910cfdda9d7SSteve Wise static int abort_rpl(struct c4iw_dev *dev, struct sk_buff *skb) 1911cfdda9d7SSteve Wise { 1912cfdda9d7SSteve Wise struct c4iw_ep *ep; 1913cfdda9d7SSteve Wise struct cpl_abort_rpl_rss *rpl = cplhdr(skb); 1914cfdda9d7SSteve Wise int release = 0; 1915cfdda9d7SSteve Wise unsigned int tid = GET_TID(rpl); 1916cfdda9d7SSteve Wise 1917944661ddSHariprasad S ep = get_ep_from_tid(dev, tid); 19184984037bSVipul Pandya if (!ep) { 19194984037bSVipul Pandya printk(KERN_WARNING MOD "Abort rpl to freed endpoint\n"); 19204984037bSVipul Pandya return 0; 19214984037bSVipul Pandya } 192292dd6c3dSWei Yongjun PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 19232f5b48c3SSteve Wise mutex_lock(&ep->com.mutex); 1924cfdda9d7SSteve Wise switch (ep->com.state) { 1925cfdda9d7SSteve Wise case ABORTING: 192691e9c071SVipul Pandya c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); 1927cfdda9d7SSteve Wise __state_set(&ep->com, DEAD); 1928cfdda9d7SSteve Wise release = 1; 1929cfdda9d7SSteve Wise break; 1930cfdda9d7SSteve Wise default: 1931cfdda9d7SSteve Wise printk(KERN_ERR "%s ep %p state %d\n", 1932cfdda9d7SSteve Wise __func__, ep, ep->com.state); 1933cfdda9d7SSteve Wise break; 1934cfdda9d7SSteve Wise } 19352f5b48c3SSteve Wise mutex_unlock(&ep->com.mutex); 1936cfdda9d7SSteve Wise 1937cfdda9d7SSteve Wise if (release) 1938cfdda9d7SSteve Wise release_ep_resources(ep); 1939944661ddSHariprasad S c4iw_put_ep(&ep->com); 1940cfdda9d7SSteve Wise return 0; 1941cfdda9d7SSteve Wise } 1942cfdda9d7SSteve Wise 1943caa6c9f2SHariprasad S static int send_fw_act_open_req(struct c4iw_ep *ep, unsigned int atid) 19445be78ee9SVipul Pandya { 19455be78ee9SVipul Pandya struct sk_buff *skb; 19465be78ee9SVipul Pandya struct fw_ofld_connection_wr *req; 19475be78ee9SVipul Pandya unsigned int mtu_idx; 19485be78ee9SVipul Pandya int wscale; 1949830662f6SVipul Pandya struct sockaddr_in *sin; 1950b408ff28SHariprasad Shenai int win; 19515be78ee9SVipul Pandya 19525be78ee9SVipul Pandya skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); 19535be78ee9SVipul Pandya req = (struct fw_ofld_connection_wr *)__skb_put(skb, sizeof(*req)); 19545be78ee9SVipul Pandya memset(req, 0, sizeof(*req)); 19556c53e938SHariprasad Shenai req->op_compl = htonl(WR_OP_V(FW_OFLD_CONNECTION_WR)); 1956e2ac9628SHariprasad Shenai req->len16_pkd = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*req), 16))); 195741b4f86cSKumar Sanghvi req->le.filter = cpu_to_be32(cxgb4_select_ntuple( 195841b4f86cSKumar Sanghvi ep->com.dev->rdev.lldi.ports[0], 19595be78ee9SVipul Pandya ep->l2t)); 1960170003c8SSteve Wise sin = (struct sockaddr_in *)&ep->com.local_addr; 1961830662f6SVipul Pandya req->le.lport = sin->sin_port; 1962830662f6SVipul Pandya req->le.u.ipv4.lip = sin->sin_addr.s_addr; 1963170003c8SSteve Wise sin = (struct sockaddr_in *)&ep->com.remote_addr; 1964830662f6SVipul Pandya req->le.pport = sin->sin_port; 1965830662f6SVipul Pandya req->le.u.ipv4.pip = sin->sin_addr.s_addr; 19665be78ee9SVipul Pandya req->tcb.t_state_to_astid = 196777a80e23SHariprasad Shenai htonl(FW_OFLD_CONNECTION_WR_T_STATE_V(TCP_SYN_SENT) | 196877a80e23SHariprasad Shenai FW_OFLD_CONNECTION_WR_ASTID_V(atid)); 19695be78ee9SVipul Pandya req->tcb.cplrxdataack_cplpassacceptrpl = 197077a80e23SHariprasad Shenai htons(FW_OFLD_CONNECTION_WR_CPLRXDATAACK_F); 1971ef5d6355SVipul Pandya req->tcb.tx_max = (__force __be32) jiffies; 1972793dad94SVipul Pandya req->tcb.rcv_adv = htons(1); 197392e7ae71SHariprasad Shenai best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx, 197404524a47SHariprasad S enable_tcp_timestamps, 197504524a47SHariprasad S (AF_INET == ep->com.remote_addr.ss_family) ? 0 : 1); 19765be78ee9SVipul Pandya wscale = compute_wscale(rcv_win); 1977b408ff28SHariprasad Shenai 1978b408ff28SHariprasad Shenai /* 1979b408ff28SHariprasad Shenai * Specify the largest window that will fit in opt0. The 1980b408ff28SHariprasad Shenai * remainder will be specified in the rx_data_ack. 1981b408ff28SHariprasad Shenai */ 1982b408ff28SHariprasad Shenai win = ep->rcv_win >> 10; 1983d7990b0cSAnish Bhatt if (win > RCV_BUFSIZ_M) 1984d7990b0cSAnish Bhatt win = RCV_BUFSIZ_M; 1985b408ff28SHariprasad Shenai 19866c53e938SHariprasad Shenai req->tcb.opt0 = (__force __be64) (TCAM_BYPASS_F | 19876c53e938SHariprasad Shenai (nocong ? NO_CONG_F : 0) | 1988d7990b0cSAnish Bhatt KEEP_ALIVE_F | 19896c53e938SHariprasad Shenai DELACK_F | 1990d7990b0cSAnish Bhatt WND_SCALE_V(wscale) | 1991d7990b0cSAnish Bhatt MSS_IDX_V(mtu_idx) | 1992d7990b0cSAnish Bhatt L2T_IDX_V(ep->l2t->idx) | 1993d7990b0cSAnish Bhatt TX_CHAN_V(ep->tx_chan) | 1994d7990b0cSAnish Bhatt SMAC_SEL_V(ep->smac_idx) | 1995ac8e4c69SHariprasad S DSCP_V(ep->tos >> 2) | 1996d7990b0cSAnish Bhatt ULP_MODE_V(ULP_MODE_TCPDDP) | 1997d7990b0cSAnish Bhatt RCV_BUFSIZ_V(win)); 19986c53e938SHariprasad Shenai req->tcb.opt2 = (__force __be32) (PACE_V(1) | 19996c53e938SHariprasad Shenai TX_QUEUE_V(ep->com.dev->rdev.lldi.tx_modq[ep->tx_chan]) | 2000d7990b0cSAnish Bhatt RX_CHANNEL_V(0) | 20016c53e938SHariprasad Shenai CCTRL_ECN_V(enable_ecn) | 2002d7990b0cSAnish Bhatt RSS_QUEUE_VALID_F | RSS_QUEUE_V(ep->rss_qid)); 20035be78ee9SVipul Pandya if (enable_tcp_timestamps) 20046c53e938SHariprasad Shenai req->tcb.opt2 |= (__force __be32)TSTAMPS_EN_F; 20055be78ee9SVipul Pandya if (enable_tcp_sack) 20066c53e938SHariprasad Shenai req->tcb.opt2 |= (__force __be32)SACK_EN_F; 20075be78ee9SVipul Pandya if (wscale && enable_tcp_window_scaling) 2008d7990b0cSAnish Bhatt req->tcb.opt2 |= (__force __be32)WND_SCALE_EN_F; 2009ef5d6355SVipul Pandya req->tcb.opt0 = cpu_to_be64((__force u64)req->tcb.opt0); 2010ef5d6355SVipul Pandya req->tcb.opt2 = cpu_to_be32((__force u32)req->tcb.opt2); 2011793dad94SVipul Pandya set_wr_txq(skb, CPL_PRIORITY_CONTROL, ep->ctrlq_idx); 2012793dad94SVipul Pandya set_bit(ACT_OFLD_CONN, &ep->com.history); 2013caa6c9f2SHariprasad S return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); 20145be78ee9SVipul Pandya } 20155be78ee9SVipul Pandya 2016cfdda9d7SSteve Wise /* 20174c72efefSHariprasad S * Some of the error codes above implicitly indicate that there is no TID 20184c72efefSHariprasad S * allocated with the result of an ACT_OPEN. We use this predicate to make 20194c72efefSHariprasad S * that explicit. 2020cfdda9d7SSteve Wise */ 2021cfdda9d7SSteve Wise static inline int act_open_has_tid(int status) 2022cfdda9d7SSteve Wise { 20234c72efefSHariprasad S return (status != CPL_ERR_TCAM_PARITY && 20244c72efefSHariprasad S status != CPL_ERR_TCAM_MISS && 20254c72efefSHariprasad S status != CPL_ERR_TCAM_FULL && 20264c72efefSHariprasad S status != CPL_ERR_CONN_EXIST_SYNRECV && 20274c72efefSHariprasad S status != CPL_ERR_CONN_EXIST); 2028cfdda9d7SSteve Wise } 2029cfdda9d7SSteve Wise 20307a2cea2aSSteve Wise /* Returns whether a CPL status conveys negative advice. 20317a2cea2aSSteve Wise */ 20327a2cea2aSSteve Wise static int is_neg_adv(unsigned int status) 20337a2cea2aSSteve Wise { 20347a2cea2aSSteve Wise return status == CPL_ERR_RTX_NEG_ADVICE || 20357a2cea2aSSteve Wise status == CPL_ERR_PERSIST_NEG_ADVICE || 20367a2cea2aSSteve Wise status == CPL_ERR_KEEPALV_NEG_ADVICE; 20377a2cea2aSSteve Wise } 20387a2cea2aSSteve Wise 2039dd92b124SHariprasad Shenai static char *neg_adv_str(unsigned int status) 2040dd92b124SHariprasad Shenai { 2041dd92b124SHariprasad Shenai switch (status) { 2042dd92b124SHariprasad Shenai case CPL_ERR_RTX_NEG_ADVICE: 2043dd92b124SHariprasad Shenai return "Retransmit timeout"; 2044dd92b124SHariprasad Shenai case CPL_ERR_PERSIST_NEG_ADVICE: 2045dd92b124SHariprasad Shenai return "Persist timeout"; 2046dd92b124SHariprasad Shenai case CPL_ERR_KEEPALV_NEG_ADVICE: 2047dd92b124SHariprasad Shenai return "Keepalive timeout"; 2048dd92b124SHariprasad Shenai default: 2049dd92b124SHariprasad Shenai return "Unknown"; 2050dd92b124SHariprasad Shenai } 2051dd92b124SHariprasad Shenai } 2052dd92b124SHariprasad Shenai 2053b408ff28SHariprasad Shenai static void set_tcp_window(struct c4iw_ep *ep, struct port_info *pi) 2054b408ff28SHariprasad Shenai { 2055b408ff28SHariprasad Shenai ep->snd_win = snd_win; 2056b408ff28SHariprasad Shenai ep->rcv_win = rcv_win; 2057b408ff28SHariprasad Shenai PDBG("%s snd_win %d rcv_win %d\n", __func__, ep->snd_win, ep->rcv_win); 2058b408ff28SHariprasad Shenai } 2059b408ff28SHariprasad Shenai 2060793dad94SVipul Pandya #define ACT_OPEN_RETRY_COUNT 2 2061793dad94SVipul Pandya 2062830662f6SVipul Pandya static int import_ep(struct c4iw_ep *ep, int iptype, __u8 *peer_ip, 2063830662f6SVipul Pandya struct dst_entry *dst, struct c4iw_dev *cdev, 2064ac8e4c69SHariprasad S bool clear_mpa_v1, enum chip_type adapter_type, u8 tos) 2065830662f6SVipul Pandya { 2066830662f6SVipul Pandya struct neighbour *n; 2067830662f6SVipul Pandya int err, step; 2068830662f6SVipul Pandya struct net_device *pdev; 2069830662f6SVipul Pandya 2070830662f6SVipul Pandya n = dst_neigh_lookup(dst, peer_ip); 2071830662f6SVipul Pandya if (!n) 2072830662f6SVipul Pandya return -ENODEV; 2073830662f6SVipul Pandya 2074830662f6SVipul Pandya rcu_read_lock(); 2075830662f6SVipul Pandya err = -ENOMEM; 2076830662f6SVipul Pandya if (n->dev->flags & IFF_LOOPBACK) { 2077830662f6SVipul Pandya if (iptype == 4) 2078830662f6SVipul Pandya pdev = ip_dev_find(&init_net, *(__be32 *)peer_ip); 2079830662f6SVipul Pandya else if (IS_ENABLED(CONFIG_IPV6)) 2080830662f6SVipul Pandya for_each_netdev(&init_net, pdev) { 2081830662f6SVipul Pandya if (ipv6_chk_addr(&init_net, 2082830662f6SVipul Pandya (struct in6_addr *)peer_ip, 2083830662f6SVipul Pandya pdev, 1)) 2084830662f6SVipul Pandya break; 2085830662f6SVipul Pandya } 2086830662f6SVipul Pandya else 2087830662f6SVipul Pandya pdev = NULL; 2088830662f6SVipul Pandya 2089830662f6SVipul Pandya if (!pdev) { 2090830662f6SVipul Pandya err = -ENODEV; 2091830662f6SVipul Pandya goto out; 2092830662f6SVipul Pandya } 2093830662f6SVipul Pandya ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t, 2094ac8e4c69SHariprasad S n, pdev, rt_tos2priority(tos)); 2095830662f6SVipul Pandya if (!ep->l2t) 2096830662f6SVipul Pandya goto out; 2097830662f6SVipul Pandya ep->mtu = pdev->mtu; 2098830662f6SVipul Pandya ep->tx_chan = cxgb4_port_chan(pdev); 2099963cab50SHariprasad S ep->smac_idx = cxgb4_tp_smt_idx(adapter_type, 2100963cab50SHariprasad S cxgb4_port_viid(pdev)); 2101830662f6SVipul Pandya step = cdev->rdev.lldi.ntxq / 2102830662f6SVipul Pandya cdev->rdev.lldi.nchan; 2103830662f6SVipul Pandya ep->txq_idx = cxgb4_port_idx(pdev) * step; 2104830662f6SVipul Pandya step = cdev->rdev.lldi.nrxq / 2105830662f6SVipul Pandya cdev->rdev.lldi.nchan; 2106830662f6SVipul Pandya ep->ctrlq_idx = cxgb4_port_idx(pdev); 2107830662f6SVipul Pandya ep->rss_qid = cdev->rdev.lldi.rxq_ids[ 2108830662f6SVipul Pandya cxgb4_port_idx(pdev) * step]; 2109b408ff28SHariprasad Shenai set_tcp_window(ep, (struct port_info *)netdev_priv(pdev)); 2110830662f6SVipul Pandya dev_put(pdev); 2111830662f6SVipul Pandya } else { 2112830662f6SVipul Pandya pdev = get_real_dev(n->dev); 2113830662f6SVipul Pandya ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t, 2114830662f6SVipul Pandya n, pdev, 0); 2115830662f6SVipul Pandya if (!ep->l2t) 2116830662f6SVipul Pandya goto out; 2117830662f6SVipul Pandya ep->mtu = dst_mtu(dst); 211811b8e22dSSteve Wise ep->tx_chan = cxgb4_port_chan(pdev); 2119963cab50SHariprasad S ep->smac_idx = cxgb4_tp_smt_idx(adapter_type, 2120963cab50SHariprasad S cxgb4_port_viid(pdev)); 2121830662f6SVipul Pandya step = cdev->rdev.lldi.ntxq / 2122830662f6SVipul Pandya cdev->rdev.lldi.nchan; 212311b8e22dSSteve Wise ep->txq_idx = cxgb4_port_idx(pdev) * step; 212411b8e22dSSteve Wise ep->ctrlq_idx = cxgb4_port_idx(pdev); 2125830662f6SVipul Pandya step = cdev->rdev.lldi.nrxq / 2126830662f6SVipul Pandya cdev->rdev.lldi.nchan; 2127830662f6SVipul Pandya ep->rss_qid = cdev->rdev.lldi.rxq_ids[ 212811b8e22dSSteve Wise cxgb4_port_idx(pdev) * step]; 2129b408ff28SHariprasad Shenai set_tcp_window(ep, (struct port_info *)netdev_priv(pdev)); 2130830662f6SVipul Pandya 2131830662f6SVipul Pandya if (clear_mpa_v1) { 2132830662f6SVipul Pandya ep->retry_with_mpa_v1 = 0; 2133830662f6SVipul Pandya ep->tried_with_mpa_v1 = 0; 2134830662f6SVipul Pandya } 2135830662f6SVipul Pandya } 2136830662f6SVipul Pandya err = 0; 2137830662f6SVipul Pandya out: 2138830662f6SVipul Pandya rcu_read_unlock(); 2139830662f6SVipul Pandya 2140830662f6SVipul Pandya neigh_release(n); 2141830662f6SVipul Pandya 2142830662f6SVipul Pandya return err; 2143830662f6SVipul Pandya } 2144830662f6SVipul Pandya 2145793dad94SVipul Pandya static int c4iw_reconnect(struct c4iw_ep *ep) 2146793dad94SVipul Pandya { 2147793dad94SVipul Pandya int err = 0; 21484a740838SHariprasad S int size = 0; 214924d44a39SSteve Wise struct sockaddr_in *laddr = (struct sockaddr_in *) 2150170003c8SSteve Wise &ep->com.cm_id->m_local_addr; 215124d44a39SSteve Wise struct sockaddr_in *raddr = (struct sockaddr_in *) 2152170003c8SSteve Wise &ep->com.cm_id->m_remote_addr; 2153830662f6SVipul Pandya struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *) 2154170003c8SSteve Wise &ep->com.cm_id->m_local_addr; 2155830662f6SVipul Pandya struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *) 2156170003c8SSteve Wise &ep->com.cm_id->m_remote_addr; 2157830662f6SVipul Pandya int iptype; 2158830662f6SVipul Pandya __u8 *ra; 2159793dad94SVipul Pandya 2160793dad94SVipul Pandya PDBG("%s qp %p cm_id %p\n", __func__, ep->com.qp, ep->com.cm_id); 2161793dad94SVipul Pandya init_timer(&ep->timer); 2162093108cbSHariprasad S c4iw_init_wr_wait(&ep->com.wr_wait); 2163793dad94SVipul Pandya 21644a740838SHariprasad S /* When MPA revision is different on nodes, the node with MPA_rev=2 21654a740838SHariprasad S * tries to reconnect with MPA_rev 1 for the same EP through 21664a740838SHariprasad S * c4iw_reconnect(), where the same EP is assigned with new tid for 21674a740838SHariprasad S * further connection establishment. As we are using the same EP pointer 21684a740838SHariprasad S * for reconnect, few skbs are used during the previous c4iw_connect(), 21694a740838SHariprasad S * which leaves the EP with inadequate skbs for further 21704a740838SHariprasad S * c4iw_reconnect(), Further causing an assert BUG_ON() due to empty 21714a740838SHariprasad S * skb_list() during peer_abort(). Allocate skbs which is already used. 21724a740838SHariprasad S */ 21734a740838SHariprasad S size = (CN_MAX_CON_BUF - skb_queue_len(&ep->com.ep_skb_list)); 21744a740838SHariprasad S if (alloc_ep_skb_list(&ep->com.ep_skb_list, size)) { 21754a740838SHariprasad S err = -ENOMEM; 21764a740838SHariprasad S goto fail1; 21774a740838SHariprasad S } 21784a740838SHariprasad S 2179793dad94SVipul Pandya /* 2180793dad94SVipul Pandya * Allocate an active TID to initiate a TCP connection. 2181793dad94SVipul Pandya */ 2182793dad94SVipul Pandya ep->atid = cxgb4_alloc_atid(ep->com.dev->rdev.lldi.tids, ep); 2183793dad94SVipul Pandya if (ep->atid == -1) { 2184793dad94SVipul Pandya pr_err("%s - cannot alloc atid.\n", __func__); 2185793dad94SVipul Pandya err = -ENOMEM; 2186793dad94SVipul Pandya goto fail2; 2187793dad94SVipul Pandya } 2188793dad94SVipul Pandya insert_handle(ep->com.dev, &ep->com.dev->atid_idr, ep, ep->atid); 2189793dad94SVipul Pandya 2190793dad94SVipul Pandya /* find a route */ 2191170003c8SSteve Wise if (ep->com.cm_id->m_local_addr.ss_family == AF_INET) { 2192804c2f3eSVarun Prakash ep->dst = cxgb_find_route(&ep->com.dev->rdev.lldi, get_real_dev, 2193804c2f3eSVarun Prakash laddr->sin_addr.s_addr, 2194804c2f3eSVarun Prakash raddr->sin_addr.s_addr, 2195804c2f3eSVarun Prakash laddr->sin_port, 2196ac8e4c69SHariprasad S raddr->sin_port, ep->com.cm_id->tos); 2197830662f6SVipul Pandya iptype = 4; 2198830662f6SVipul Pandya ra = (__u8 *)&raddr->sin_addr; 2199830662f6SVipul Pandya } else { 2200830662f6SVipul Pandya ep->dst = find_route6(ep->com.dev, laddr6->sin6_addr.s6_addr, 2201830662f6SVipul Pandya raddr6->sin6_addr.s6_addr, 2202830662f6SVipul Pandya laddr6->sin6_port, raddr6->sin6_port, 0, 2203830662f6SVipul Pandya raddr6->sin6_scope_id); 2204830662f6SVipul Pandya iptype = 6; 2205830662f6SVipul Pandya ra = (__u8 *)&raddr6->sin6_addr; 2206830662f6SVipul Pandya } 2207830662f6SVipul Pandya if (!ep->dst) { 2208793dad94SVipul Pandya pr_err("%s - cannot find route.\n", __func__); 2209793dad94SVipul Pandya err = -EHOSTUNREACH; 2210793dad94SVipul Pandya goto fail3; 2211793dad94SVipul Pandya } 2212963cab50SHariprasad S err = import_ep(ep, iptype, ra, ep->dst, ep->com.dev, false, 2213ac8e4c69SHariprasad S ep->com.dev->rdev.lldi.adapter_type, 2214ac8e4c69SHariprasad S ep->com.cm_id->tos); 2215830662f6SVipul Pandya if (err) { 2216793dad94SVipul Pandya pr_err("%s - cannot alloc l2e.\n", __func__); 2217793dad94SVipul Pandya goto fail4; 2218793dad94SVipul Pandya } 2219793dad94SVipul Pandya 2220793dad94SVipul Pandya PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n", 2221793dad94SVipul Pandya __func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid, 2222793dad94SVipul Pandya ep->l2t->idx); 2223793dad94SVipul Pandya 2224793dad94SVipul Pandya state_set(&ep->com, CONNECTING); 2225ac8e4c69SHariprasad S ep->tos = ep->com.cm_id->tos; 2226793dad94SVipul Pandya 2227793dad94SVipul Pandya /* send connect request to rnic */ 2228793dad94SVipul Pandya err = send_connect(ep); 2229793dad94SVipul Pandya if (!err) 2230793dad94SVipul Pandya goto out; 2231793dad94SVipul Pandya 2232793dad94SVipul Pandya cxgb4_l2t_release(ep->l2t); 2233793dad94SVipul Pandya fail4: 2234793dad94SVipul Pandya dst_release(ep->dst); 2235793dad94SVipul Pandya fail3: 2236793dad94SVipul Pandya remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid); 2237793dad94SVipul Pandya cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid); 2238793dad94SVipul Pandya fail2: 2239793dad94SVipul Pandya /* 2240793dad94SVipul Pandya * remember to send notification to upper layer. 2241793dad94SVipul Pandya * We are in here so the upper layer is not aware that this is 2242793dad94SVipul Pandya * re-connect attempt and so, upper layer is still waiting for 2243793dad94SVipul Pandya * response of 1st connect request. 2244793dad94SVipul Pandya */ 2245793dad94SVipul Pandya connect_reply_upcall(ep, -ECONNRESET); 22464a740838SHariprasad S fail1: 2247793dad94SVipul Pandya c4iw_put_ep(&ep->com); 2248793dad94SVipul Pandya out: 2249793dad94SVipul Pandya return err; 2250793dad94SVipul Pandya } 2251793dad94SVipul Pandya 2252cfdda9d7SSteve Wise static int act_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb) 2253cfdda9d7SSteve Wise { 2254cfdda9d7SSteve Wise struct c4iw_ep *ep; 2255cfdda9d7SSteve Wise struct cpl_act_open_rpl *rpl = cplhdr(skb); 22566c53e938SHariprasad Shenai unsigned int atid = TID_TID_G(AOPEN_ATID_G( 2257cfdda9d7SSteve Wise ntohl(rpl->atid_status))); 2258cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 22596c53e938SHariprasad Shenai int status = AOPEN_STATUS_G(ntohl(rpl->atid_status)); 2260830662f6SVipul Pandya struct sockaddr_in *la; 2261830662f6SVipul Pandya struct sockaddr_in *ra; 2262830662f6SVipul Pandya struct sockaddr_in6 *la6; 2263830662f6SVipul Pandya struct sockaddr_in6 *ra6; 2264caa6c9f2SHariprasad S int ret = 0; 2265cfdda9d7SSteve Wise 2266cfdda9d7SSteve Wise ep = lookup_atid(t, atid); 2267170003c8SSteve Wise la = (struct sockaddr_in *)&ep->com.local_addr; 2268170003c8SSteve Wise ra = (struct sockaddr_in *)&ep->com.remote_addr; 2269170003c8SSteve Wise la6 = (struct sockaddr_in6 *)&ep->com.local_addr; 2270170003c8SSteve Wise ra6 = (struct sockaddr_in6 *)&ep->com.remote_addr; 2271cfdda9d7SSteve Wise 2272cfdda9d7SSteve Wise PDBG("%s ep %p atid %u status %u errno %d\n", __func__, ep, atid, 2273cfdda9d7SSteve Wise status, status2errno(status)); 2274cfdda9d7SSteve Wise 22757a2cea2aSSteve Wise if (is_neg_adv(status)) { 2276179d03bbSHariprasad S PDBG("%s Connection problems for atid %u status %u (%s)\n", 2277179d03bbSHariprasad S __func__, atid, status, neg_adv_str(status)); 2278179d03bbSHariprasad S ep->stats.connect_neg_adv++; 2279179d03bbSHariprasad S mutex_lock(&dev->rdev.stats.lock); 2280179d03bbSHariprasad S dev->rdev.stats.neg_adv++; 2281179d03bbSHariprasad S mutex_unlock(&dev->rdev.stats.lock); 2282cfdda9d7SSteve Wise return 0; 2283cfdda9d7SSteve Wise } 2284cfdda9d7SSteve Wise 2285793dad94SVipul Pandya set_bit(ACT_OPEN_RPL, &ep->com.history); 2286793dad94SVipul Pandya 2287d716a2a0SVipul Pandya /* 2288d716a2a0SVipul Pandya * Log interesting failures. 2289d716a2a0SVipul Pandya */ 2290d716a2a0SVipul Pandya switch (status) { 2291d716a2a0SVipul Pandya case CPL_ERR_CONN_RESET: 2292d716a2a0SVipul Pandya case CPL_ERR_CONN_TIMEDOUT: 2293d716a2a0SVipul Pandya break; 22945be78ee9SVipul Pandya case CPL_ERR_TCAM_FULL: 22955be78ee9SVipul Pandya mutex_lock(&dev->rdev.stats.lock); 2296830662f6SVipul Pandya dev->rdev.stats.tcam_full++; 22975be78ee9SVipul Pandya mutex_unlock(&dev->rdev.stats.lock); 2298830662f6SVipul Pandya if (ep->com.local_addr.ss_family == AF_INET && 2299830662f6SVipul Pandya dev->rdev.lldi.enable_fw_ofld_conn) { 2300caa6c9f2SHariprasad S ret = send_fw_act_open_req(ep, TID_TID_G(AOPEN_ATID_G( 2301793dad94SVipul Pandya ntohl(rpl->atid_status)))); 2302caa6c9f2SHariprasad S if (ret) 2303caa6c9f2SHariprasad S goto fail; 23045be78ee9SVipul Pandya return 0; 2305793dad94SVipul Pandya } 2306793dad94SVipul Pandya break; 2307793dad94SVipul Pandya case CPL_ERR_CONN_EXIST: 2308793dad94SVipul Pandya if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) { 2309793dad94SVipul Pandya set_bit(ACT_RETRY_INUSE, &ep->com.history); 231084cc6ac6SHariprasad S if (ep->com.remote_addr.ss_family == AF_INET6) { 231184cc6ac6SHariprasad S struct sockaddr_in6 *sin6 = 231284cc6ac6SHariprasad S (struct sockaddr_in6 *) 2313170003c8SSteve Wise &ep->com.local_addr; 231484cc6ac6SHariprasad S cxgb4_clip_release( 231584cc6ac6SHariprasad S ep->com.dev->rdev.lldi.ports[0], 231684cc6ac6SHariprasad S (const u32 *) 231784cc6ac6SHariprasad S &sin6->sin6_addr.s6_addr, 1); 231884cc6ac6SHariprasad S } 2319793dad94SVipul Pandya remove_handle(ep->com.dev, &ep->com.dev->atid_idr, 2320793dad94SVipul Pandya atid); 2321793dad94SVipul Pandya cxgb4_free_atid(t, atid); 2322793dad94SVipul Pandya dst_release(ep->dst); 2323793dad94SVipul Pandya cxgb4_l2t_release(ep->l2t); 2324793dad94SVipul Pandya c4iw_reconnect(ep); 2325793dad94SVipul Pandya return 0; 2326793dad94SVipul Pandya } 23275be78ee9SVipul Pandya break; 2328d716a2a0SVipul Pandya default: 2329830662f6SVipul Pandya if (ep->com.local_addr.ss_family == AF_INET) { 2330830662f6SVipul Pandya pr_info("Active open failure - atid %u status %u errno %d %pI4:%u->%pI4:%u\n", 2331d716a2a0SVipul Pandya atid, status, status2errno(status), 2332830662f6SVipul Pandya &la->sin_addr.s_addr, ntohs(la->sin_port), 2333830662f6SVipul Pandya &ra->sin_addr.s_addr, ntohs(ra->sin_port)); 2334830662f6SVipul Pandya } else { 2335830662f6SVipul Pandya pr_info("Active open failure - atid %u status %u errno %d %pI6:%u->%pI6:%u\n", 2336830662f6SVipul Pandya atid, status, status2errno(status), 2337830662f6SVipul Pandya la6->sin6_addr.s6_addr, ntohs(la6->sin6_port), 2338830662f6SVipul Pandya ra6->sin6_addr.s6_addr, ntohs(ra6->sin6_port)); 2339830662f6SVipul Pandya } 2340d716a2a0SVipul Pandya break; 2341d716a2a0SVipul Pandya } 2342d716a2a0SVipul Pandya 2343caa6c9f2SHariprasad S fail: 2344cfdda9d7SSteve Wise connect_reply_upcall(ep, status2errno(status)); 2345cfdda9d7SSteve Wise state_set(&ep->com, DEAD); 2346cfdda9d7SSteve Wise 234784cc6ac6SHariprasad S if (ep->com.remote_addr.ss_family == AF_INET6) { 234884cc6ac6SHariprasad S struct sockaddr_in6 *sin6 = 2349170003c8SSteve Wise (struct sockaddr_in6 *)&ep->com.local_addr; 235084cc6ac6SHariprasad S cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0], 235184cc6ac6SHariprasad S (const u32 *)&sin6->sin6_addr.s6_addr, 1); 235284cc6ac6SHariprasad S } 2353cfdda9d7SSteve Wise if (status && act_open_has_tid(status)) 2354cfdda9d7SSteve Wise cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, GET_TID(rpl)); 2355cfdda9d7SSteve Wise 2356793dad94SVipul Pandya remove_handle(ep->com.dev, &ep->com.dev->atid_idr, atid); 2357cfdda9d7SSteve Wise cxgb4_free_atid(t, atid); 2358cfdda9d7SSteve Wise dst_release(ep->dst); 2359cfdda9d7SSteve Wise cxgb4_l2t_release(ep->l2t); 2360cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 2361cfdda9d7SSteve Wise 2362cfdda9d7SSteve Wise return 0; 2363cfdda9d7SSteve Wise } 2364cfdda9d7SSteve Wise 2365cfdda9d7SSteve Wise static int pass_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb) 2366cfdda9d7SSteve Wise { 2367cfdda9d7SSteve Wise struct cpl_pass_open_rpl *rpl = cplhdr(skb); 2368cfdda9d7SSteve Wise unsigned int stid = GET_TID(rpl); 2369f86fac79SHariprasad S struct c4iw_listen_ep *ep = get_ep_from_stid(dev, stid); 2370cfdda9d7SSteve Wise 2371cfdda9d7SSteve Wise if (!ep) { 23721cab775cSVipul Pandya PDBG("%s stid %d lookup failure!\n", __func__, stid); 23731cab775cSVipul Pandya goto out; 2374cfdda9d7SSteve Wise } 2375cfdda9d7SSteve Wise PDBG("%s ep %p status %d error %d\n", __func__, ep, 2376cfdda9d7SSteve Wise rpl->status, status2errno(rpl->status)); 2377d9594d99SSteve Wise c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status)); 2378f86fac79SHariprasad S c4iw_put_ep(&ep->com); 23791cab775cSVipul Pandya out: 2380cfdda9d7SSteve Wise return 0; 2381cfdda9d7SSteve Wise } 2382cfdda9d7SSteve Wise 2383cfdda9d7SSteve Wise static int close_listsrv_rpl(struct c4iw_dev *dev, struct sk_buff *skb) 2384cfdda9d7SSteve Wise { 2385cfdda9d7SSteve Wise struct cpl_close_listsvr_rpl *rpl = cplhdr(skb); 2386cfdda9d7SSteve Wise unsigned int stid = GET_TID(rpl); 2387f86fac79SHariprasad S struct c4iw_listen_ep *ep = get_ep_from_stid(dev, stid); 2388cfdda9d7SSteve Wise 2389cfdda9d7SSteve Wise PDBG("%s ep %p\n", __func__, ep); 2390d9594d99SSteve Wise c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status)); 2391f86fac79SHariprasad S c4iw_put_ep(&ep->com); 2392cfdda9d7SSteve Wise return 0; 2393cfdda9d7SSteve Wise } 2394cfdda9d7SSteve Wise 23959dec900cSHariprasad S static int accept_cr(struct c4iw_ep *ep, struct sk_buff *skb, 2396cfdda9d7SSteve Wise struct cpl_pass_accept_req *req) 2397cfdda9d7SSteve Wise { 2398cfdda9d7SSteve Wise struct cpl_pass_accept_rpl *rpl; 2399cfdda9d7SSteve Wise unsigned int mtu_idx; 2400cfdda9d7SSteve Wise u64 opt0; 2401cfdda9d7SSteve Wise u32 opt2; 2402cfdda9d7SSteve Wise int wscale; 240392e7ae71SHariprasad Shenai struct cpl_t5_pass_accept_rpl *rpl5 = NULL; 2404b408ff28SHariprasad Shenai int win; 2405963cab50SHariprasad S enum chip_type adapter_type = ep->com.dev->rdev.lldi.adapter_type; 2406cfdda9d7SSteve Wise 2407cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 2408cfdda9d7SSteve Wise BUG_ON(skb_cloned(skb)); 240992e7ae71SHariprasad Shenai 2410cfdda9d7SSteve Wise skb_get(skb); 241192e7ae71SHariprasad Shenai rpl = cplhdr(skb); 2412963cab50SHariprasad S if (!is_t4(adapter_type)) { 241392e7ae71SHariprasad Shenai skb_trim(skb, roundup(sizeof(*rpl5), 16)); 241492e7ae71SHariprasad Shenai rpl5 = (void *)rpl; 241592e7ae71SHariprasad Shenai INIT_TP_WR(rpl5, ep->hwtid); 241692e7ae71SHariprasad Shenai } else { 241792e7ae71SHariprasad Shenai skb_trim(skb, sizeof(*rpl)); 241892e7ae71SHariprasad Shenai INIT_TP_WR(rpl, ep->hwtid); 241992e7ae71SHariprasad Shenai } 242092e7ae71SHariprasad Shenai OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL, 242192e7ae71SHariprasad Shenai ep->hwtid)); 242292e7ae71SHariprasad Shenai 242392e7ae71SHariprasad Shenai best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx, 242404524a47SHariprasad S enable_tcp_timestamps && req->tcpopt.tstamp, 242504524a47SHariprasad S (AF_INET == ep->com.remote_addr.ss_family) ? 0 : 1); 2426cfdda9d7SSteve Wise wscale = compute_wscale(rcv_win); 2427b408ff28SHariprasad Shenai 2428b408ff28SHariprasad Shenai /* 2429b408ff28SHariprasad Shenai * Specify the largest window that will fit in opt0. The 2430b408ff28SHariprasad Shenai * remainder will be specified in the rx_data_ack. 2431b408ff28SHariprasad Shenai */ 2432b408ff28SHariprasad Shenai win = ep->rcv_win >> 10; 2433d7990b0cSAnish Bhatt if (win > RCV_BUFSIZ_M) 2434d7990b0cSAnish Bhatt win = RCV_BUFSIZ_M; 24356c53e938SHariprasad Shenai opt0 = (nocong ? NO_CONG_F : 0) | 2436d7990b0cSAnish Bhatt KEEP_ALIVE_F | 24376c53e938SHariprasad Shenai DELACK_F | 2438d7990b0cSAnish Bhatt WND_SCALE_V(wscale) | 2439d7990b0cSAnish Bhatt MSS_IDX_V(mtu_idx) | 2440d7990b0cSAnish Bhatt L2T_IDX_V(ep->l2t->idx) | 2441d7990b0cSAnish Bhatt TX_CHAN_V(ep->tx_chan) | 2442d7990b0cSAnish Bhatt SMAC_SEL_V(ep->smac_idx) | 24436c53e938SHariprasad Shenai DSCP_V(ep->tos >> 2) | 2444d7990b0cSAnish Bhatt ULP_MODE_V(ULP_MODE_TCPDDP) | 2445d7990b0cSAnish Bhatt RCV_BUFSIZ_V(win); 2446d7990b0cSAnish Bhatt opt2 = RX_CHANNEL_V(0) | 2447d7990b0cSAnish Bhatt RSS_QUEUE_VALID_F | RSS_QUEUE_V(ep->rss_qid); 2448cfdda9d7SSteve Wise 2449cfdda9d7SSteve Wise if (enable_tcp_timestamps && req->tcpopt.tstamp) 24506c53e938SHariprasad Shenai opt2 |= TSTAMPS_EN_F; 2451cfdda9d7SSteve Wise if (enable_tcp_sack && req->tcpopt.sack) 24526c53e938SHariprasad Shenai opt2 |= SACK_EN_F; 2453cfdda9d7SSteve Wise if (wscale && enable_tcp_window_scaling) 2454d7990b0cSAnish Bhatt opt2 |= WND_SCALE_EN_F; 24555be78ee9SVipul Pandya if (enable_ecn) { 24565be78ee9SVipul Pandya const struct tcphdr *tcph; 24575be78ee9SVipul Pandya u32 hlen = ntohl(req->hdr_len); 24585be78ee9SVipul Pandya 2459963cab50SHariprasad S if (CHELSIO_CHIP_VERSION(adapter_type) <= CHELSIO_T5) 2460cf7fe64aSHariprasad Shenai tcph = (const void *)(req + 1) + ETH_HDR_LEN_G(hlen) + 2461cf7fe64aSHariprasad Shenai IP_HDR_LEN_G(hlen); 2462963cab50SHariprasad S else 2463963cab50SHariprasad S tcph = (const void *)(req + 1) + 2464963cab50SHariprasad S T6_ETH_HDR_LEN_G(hlen) + T6_IP_HDR_LEN_G(hlen); 24655be78ee9SVipul Pandya if (tcph->ece && tcph->cwr) 24666c53e938SHariprasad Shenai opt2 |= CCTRL_ECN_V(1); 24675be78ee9SVipul Pandya } 2468963cab50SHariprasad S if (CHELSIO_CHIP_VERSION(adapter_type) > CHELSIO_T4) { 246992e7ae71SHariprasad Shenai u32 isn = (prandom_u32() & ~7UL) - 1; 2470d7990b0cSAnish Bhatt opt2 |= T5_OPT_2_VALID_F; 2471cf7fe64aSHariprasad Shenai opt2 |= CONG_CNTRL_V(CONG_ALG_TAHOE); 24720b741047SHariprasad S opt2 |= T5_ISS_F; 247392e7ae71SHariprasad Shenai rpl5 = (void *)rpl; 247492e7ae71SHariprasad Shenai memset(&rpl5->iss, 0, roundup(sizeof(*rpl5)-sizeof(*rpl), 16)); 247592e7ae71SHariprasad Shenai if (peer2peer) 247692e7ae71SHariprasad Shenai isn += 4; 247792e7ae71SHariprasad Shenai rpl5->iss = cpu_to_be32(isn); 247892e7ae71SHariprasad Shenai PDBG("%s iss %u\n", __func__, be32_to_cpu(rpl5->iss)); 247992e5011aSSteve Wise } 2480cfdda9d7SSteve Wise 2481cfdda9d7SSteve Wise rpl->opt0 = cpu_to_be64(opt0); 2482cfdda9d7SSteve Wise rpl->opt2 = cpu_to_be32(opt2); 2483d4f1a5c6SSteve Wise set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx); 24849dec900cSHariprasad S t4_set_arp_err_handler(skb, ep, pass_accept_rpl_arp_failure); 2485cfdda9d7SSteve Wise 24869dec900cSHariprasad S return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); 2487cfdda9d7SSteve Wise } 2488cfdda9d7SSteve Wise 2489830662f6SVipul Pandya static void reject_cr(struct c4iw_dev *dev, u32 hwtid, struct sk_buff *skb) 2490cfdda9d7SSteve Wise { 2491830662f6SVipul Pandya PDBG("%s c4iw_dev %p tid %u\n", __func__, dev, hwtid); 2492cfdda9d7SSteve Wise BUG_ON(skb_cloned(skb)); 2493cfdda9d7SSteve Wise skb_trim(skb, sizeof(struct cpl_tid_release)); 2494cfdda9d7SSteve Wise release_tid(&dev->rdev, hwtid, skb); 2495cfdda9d7SSteve Wise return; 2496cfdda9d7SSteve Wise } 2497cfdda9d7SSteve Wise 2498cfdda9d7SSteve Wise static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb) 2499cfdda9d7SSteve Wise { 2500793dad94SVipul Pandya struct c4iw_ep *child_ep = NULL, *parent_ep; 2501cfdda9d7SSteve Wise struct cpl_pass_accept_req *req = cplhdr(skb); 25026c53e938SHariprasad Shenai unsigned int stid = PASS_OPEN_TID_G(ntohl(req->tos_stid)); 2503cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 2504cfdda9d7SSteve Wise unsigned int hwtid = GET_TID(req); 2505cfdda9d7SSteve Wise struct dst_entry *dst; 2506830662f6SVipul Pandya __u8 local_ip[16], peer_ip[16]; 2507cfdda9d7SSteve Wise __be16 local_port, peer_port; 250884cc6ac6SHariprasad S struct sockaddr_in6 *sin6; 25093786cf18SDavid Miller int err; 25101cab775cSVipul Pandya u16 peer_mss = ntohs(req->tcpopt.mss); 2511830662f6SVipul Pandya int iptype; 251292e7ae71SHariprasad Shenai unsigned short hdrs; 2513ac8e4c69SHariprasad S u8 tos = PASS_OPEN_TOS_G(ntohl(req->tos_stid)); 2514cfdda9d7SSteve Wise 2515f86fac79SHariprasad S parent_ep = (struct c4iw_ep *)get_ep_from_stid(dev, stid); 25161cab775cSVipul Pandya if (!parent_ep) { 25171cab775cSVipul Pandya PDBG("%s connect request on invalid stid %d\n", __func__, stid); 25181cab775cSVipul Pandya goto reject; 25191cab775cSVipul Pandya } 25201cab775cSVipul Pandya 2521cfdda9d7SSteve Wise if (state_read(&parent_ep->com) != LISTEN) { 25226812faefSHariprasad S PDBG("%s - listening ep not in LISTEN\n", __func__); 2523cfdda9d7SSteve Wise goto reject; 2524cfdda9d7SSteve Wise } 2525cfdda9d7SSteve Wise 252685e42b04SVarun Prakash cxgb_get_4tuple(req, parent_ep->com.dev->rdev.lldi.adapter_type, 252785e42b04SVarun Prakash &iptype, local_ip, peer_ip, &local_port, &peer_port); 2528830662f6SVipul Pandya 2529cfdda9d7SSteve Wise /* Find output route */ 2530830662f6SVipul Pandya if (iptype == 4) { 2531830662f6SVipul Pandya PDBG("%s parent ep %p hwtid %u laddr %pI4 raddr %pI4 lport %d rport %d peer_mss %d\n" 2532830662f6SVipul Pandya , __func__, parent_ep, hwtid, 2533830662f6SVipul Pandya local_ip, peer_ip, ntohs(local_port), 2534830662f6SVipul Pandya ntohs(peer_port), peer_mss); 2535804c2f3eSVarun Prakash dst = cxgb_find_route(&dev->rdev.lldi, get_real_dev, 2536804c2f3eSVarun Prakash *(__be32 *)local_ip, *(__be32 *)peer_ip, 2537804c2f3eSVarun Prakash local_port, peer_port, tos); 2538830662f6SVipul Pandya } else { 2539830662f6SVipul Pandya PDBG("%s parent ep %p hwtid %u laddr %pI6 raddr %pI6 lport %d rport %d peer_mss %d\n" 2540830662f6SVipul Pandya , __func__, parent_ep, hwtid, 2541830662f6SVipul Pandya local_ip, peer_ip, ntohs(local_port), 2542830662f6SVipul Pandya ntohs(peer_port), peer_mss); 2543830662f6SVipul Pandya dst = find_route6(dev, local_ip, peer_ip, local_port, peer_port, 25446c53e938SHariprasad Shenai PASS_OPEN_TOS_G(ntohl(req->tos_stid)), 2545830662f6SVipul Pandya ((struct sockaddr_in6 *) 2546830662f6SVipul Pandya &parent_ep->com.local_addr)->sin6_scope_id); 2547830662f6SVipul Pandya } 2548830662f6SVipul Pandya if (!dst) { 2549cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - failed to find dst entry!\n", 2550cfdda9d7SSteve Wise __func__); 2551cfdda9d7SSteve Wise goto reject; 2552cfdda9d7SSteve Wise } 2553cfdda9d7SSteve Wise 2554cfdda9d7SSteve Wise child_ep = alloc_ep(sizeof(*child_ep), GFP_KERNEL); 2555cfdda9d7SSteve Wise if (!child_ep) { 2556cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - failed to allocate ep entry!\n", 2557cfdda9d7SSteve Wise __func__); 2558cfdda9d7SSteve Wise dst_release(dst); 2559cfdda9d7SSteve Wise goto reject; 2560cfdda9d7SSteve Wise } 25613786cf18SDavid Miller 2562963cab50SHariprasad S err = import_ep(child_ep, iptype, peer_ip, dst, dev, false, 2563ac8e4c69SHariprasad S parent_ep->com.dev->rdev.lldi.adapter_type, tos); 25643786cf18SDavid Miller if (err) { 25653786cf18SDavid Miller printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n", 25663786cf18SDavid Miller __func__); 25673786cf18SDavid Miller dst_release(dst); 25683786cf18SDavid Miller kfree(child_ep); 25693786cf18SDavid Miller goto reject; 25703786cf18SDavid Miller } 25713786cf18SDavid Miller 257292e7ae71SHariprasad Shenai hdrs = sizeof(struct iphdr) + sizeof(struct tcphdr) + 257392e7ae71SHariprasad Shenai ((enable_tcp_timestamps && req->tcpopt.tstamp) ? 12 : 0); 257492e7ae71SHariprasad Shenai if (peer_mss && child_ep->mtu > (peer_mss + hdrs)) 257592e7ae71SHariprasad Shenai child_ep->mtu = peer_mss + hdrs; 25761cab775cSVipul Pandya 25774a740838SHariprasad S skb_queue_head_init(&child_ep->com.ep_skb_list); 25784a740838SHariprasad S if (alloc_ep_skb_list(&child_ep->com.ep_skb_list, CN_MAX_CON_BUF)) 25794a740838SHariprasad S goto fail; 25804a740838SHariprasad S 2581cfdda9d7SSteve Wise state_set(&child_ep->com, CONNECTING); 2582cfdda9d7SSteve Wise child_ep->com.dev = dev; 2583cfdda9d7SSteve Wise child_ep->com.cm_id = NULL; 25845b6b8fe6SSteve Wise 2585830662f6SVipul Pandya if (iptype == 4) { 2586830662f6SVipul Pandya struct sockaddr_in *sin = (struct sockaddr_in *) 2587170003c8SSteve Wise &child_ep->com.local_addr; 25885b6b8fe6SSteve Wise 2589830662f6SVipul Pandya sin->sin_family = PF_INET; 2590830662f6SVipul Pandya sin->sin_port = local_port; 2591830662f6SVipul Pandya sin->sin_addr.s_addr = *(__be32 *)local_ip; 25925b6b8fe6SSteve Wise 25935b6b8fe6SSteve Wise sin = (struct sockaddr_in *)&child_ep->com.local_addr; 25945b6b8fe6SSteve Wise sin->sin_family = PF_INET; 25955b6b8fe6SSteve Wise sin->sin_port = ((struct sockaddr_in *) 25965b6b8fe6SSteve Wise &parent_ep->com.local_addr)->sin_port; 25975b6b8fe6SSteve Wise sin->sin_addr.s_addr = *(__be32 *)local_ip; 25985b6b8fe6SSteve Wise 2599170003c8SSteve Wise sin = (struct sockaddr_in *)&child_ep->com.remote_addr; 2600830662f6SVipul Pandya sin->sin_family = PF_INET; 2601830662f6SVipul Pandya sin->sin_port = peer_port; 2602830662f6SVipul Pandya sin->sin_addr.s_addr = *(__be32 *)peer_ip; 2603830662f6SVipul Pandya } else { 2604170003c8SSteve Wise sin6 = (struct sockaddr_in6 *)&child_ep->com.local_addr; 2605830662f6SVipul Pandya sin6->sin6_family = PF_INET6; 2606830662f6SVipul Pandya sin6->sin6_port = local_port; 2607830662f6SVipul Pandya memcpy(sin6->sin6_addr.s6_addr, local_ip, 16); 26085b6b8fe6SSteve Wise 26095b6b8fe6SSteve Wise sin6 = (struct sockaddr_in6 *)&child_ep->com.local_addr; 26105b6b8fe6SSteve Wise sin6->sin6_family = PF_INET6; 26115b6b8fe6SSteve Wise sin6->sin6_port = ((struct sockaddr_in6 *) 26125b6b8fe6SSteve Wise &parent_ep->com.local_addr)->sin6_port; 26135b6b8fe6SSteve Wise memcpy(sin6->sin6_addr.s6_addr, local_ip, 16); 26145b6b8fe6SSteve Wise 2615170003c8SSteve Wise sin6 = (struct sockaddr_in6 *)&child_ep->com.remote_addr; 2616830662f6SVipul Pandya sin6->sin6_family = PF_INET6; 2617830662f6SVipul Pandya sin6->sin6_port = peer_port; 2618830662f6SVipul Pandya memcpy(sin6->sin6_addr.s6_addr, peer_ip, 16); 2619830662f6SVipul Pandya } 26205b6b8fe6SSteve Wise 2621cfdda9d7SSteve Wise c4iw_get_ep(&parent_ep->com); 2622cfdda9d7SSteve Wise child_ep->parent_ep = parent_ep; 2623ac8e4c69SHariprasad S child_ep->tos = tos; 2624cfdda9d7SSteve Wise child_ep->dst = dst; 2625cfdda9d7SSteve Wise child_ep->hwtid = hwtid; 2626cfdda9d7SSteve Wise 2627cfdda9d7SSteve Wise PDBG("%s tx_chan %u smac_idx %u rss_qid %u\n", __func__, 26283786cf18SDavid Miller child_ep->tx_chan, child_ep->smac_idx, child_ep->rss_qid); 2629cfdda9d7SSteve Wise 2630cfdda9d7SSteve Wise init_timer(&child_ep->timer); 2631cfdda9d7SSteve Wise cxgb4_insert_tid(t, child_ep, hwtid); 2632944661ddSHariprasad S insert_ep_tid(child_ep); 26339dec900cSHariprasad S if (accept_cr(child_ep, skb, req)) { 26349dec900cSHariprasad S c4iw_put_ep(&parent_ep->com); 26359dec900cSHariprasad S release_ep_resources(child_ep); 26369dec900cSHariprasad S } else { 2637793dad94SVipul Pandya set_bit(PASS_ACCEPT_REQ, &child_ep->com.history); 26389dec900cSHariprasad S } 263984cc6ac6SHariprasad S if (iptype == 6) { 2640170003c8SSteve Wise sin6 = (struct sockaddr_in6 *)&child_ep->com.local_addr; 264184cc6ac6SHariprasad S cxgb4_clip_get(child_ep->com.dev->rdev.lldi.ports[0], 264284cc6ac6SHariprasad S (const u32 *)&sin6->sin6_addr.s6_addr, 1); 264384cc6ac6SHariprasad S } 2644cfdda9d7SSteve Wise goto out; 26454a740838SHariprasad S fail: 26464a740838SHariprasad S c4iw_put_ep(&child_ep->com); 2647cfdda9d7SSteve Wise reject: 2648830662f6SVipul Pandya reject_cr(dev, hwtid, skb); 2649f86fac79SHariprasad S if (parent_ep) 2650f86fac79SHariprasad S c4iw_put_ep(&parent_ep->com); 2651cfdda9d7SSteve Wise out: 2652cfdda9d7SSteve Wise return 0; 2653cfdda9d7SSteve Wise } 2654cfdda9d7SSteve Wise 2655cfdda9d7SSteve Wise static int pass_establish(struct c4iw_dev *dev, struct sk_buff *skb) 2656cfdda9d7SSteve Wise { 2657cfdda9d7SSteve Wise struct c4iw_ep *ep; 2658cfdda9d7SSteve Wise struct cpl_pass_establish *req = cplhdr(skb); 2659cfdda9d7SSteve Wise unsigned int tid = GET_TID(req); 2660fef4422dSHariprasad S int ret; 2661cfdda9d7SSteve Wise 2662944661ddSHariprasad S ep = get_ep_from_tid(dev, tid); 2663cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 2664cfdda9d7SSteve Wise ep->snd_seq = be32_to_cpu(req->snd_isn); 2665cfdda9d7SSteve Wise ep->rcv_seq = be32_to_cpu(req->rcv_isn); 2666cfdda9d7SSteve Wise 26671cab775cSVipul Pandya PDBG("%s ep %p hwtid %u tcp_opt 0x%02x\n", __func__, ep, tid, 26681cab775cSVipul Pandya ntohs(req->tcp_opt)); 26691cab775cSVipul Pandya 2670cfdda9d7SSteve Wise set_emss(ep, ntohs(req->tcp_opt)); 2671cfdda9d7SSteve Wise 2672cfdda9d7SSteve Wise dst_confirm(ep->dst); 2673fef4422dSHariprasad S mutex_lock(&ep->com.mutex); 2674fef4422dSHariprasad S ep->com.state = MPA_REQ_WAIT; 2675cfdda9d7SSteve Wise start_ep_timer(ep); 2676793dad94SVipul Pandya set_bit(PASS_ESTAB, &ep->com.history); 26774a740838SHariprasad S ret = send_flowc(ep); 2678fef4422dSHariprasad S mutex_unlock(&ep->com.mutex); 2679fef4422dSHariprasad S if (ret) 2680fef4422dSHariprasad S c4iw_ep_disconnect(ep, 1, GFP_KERNEL); 2681944661ddSHariprasad S c4iw_put_ep(&ep->com); 2682cfdda9d7SSteve Wise 2683cfdda9d7SSteve Wise return 0; 2684cfdda9d7SSteve Wise } 2685cfdda9d7SSteve Wise 2686cfdda9d7SSteve Wise static int peer_close(struct c4iw_dev *dev, struct sk_buff *skb) 2687cfdda9d7SSteve Wise { 2688cfdda9d7SSteve Wise struct cpl_peer_close *hdr = cplhdr(skb); 2689cfdda9d7SSteve Wise struct c4iw_ep *ep; 2690cfdda9d7SSteve Wise struct c4iw_qp_attributes attrs; 2691cfdda9d7SSteve Wise int disconnect = 1; 2692cfdda9d7SSteve Wise int release = 0; 2693cfdda9d7SSteve Wise unsigned int tid = GET_TID(hdr); 26948da7e7a5SSteve Wise int ret; 2695cfdda9d7SSteve Wise 2696944661ddSHariprasad S ep = get_ep_from_tid(dev, tid); 2697944661ddSHariprasad S if (!ep) 2698944661ddSHariprasad S return 0; 2699944661ddSHariprasad S 2700cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 2701cfdda9d7SSteve Wise dst_confirm(ep->dst); 2702cfdda9d7SSteve Wise 2703793dad94SVipul Pandya set_bit(PEER_CLOSE, &ep->com.history); 27042f5b48c3SSteve Wise mutex_lock(&ep->com.mutex); 2705cfdda9d7SSteve Wise switch (ep->com.state) { 2706cfdda9d7SSteve Wise case MPA_REQ_WAIT: 2707cfdda9d7SSteve Wise __state_set(&ep->com, CLOSING); 2708cfdda9d7SSteve Wise break; 2709cfdda9d7SSteve Wise case MPA_REQ_SENT: 2710cfdda9d7SSteve Wise __state_set(&ep->com, CLOSING); 2711cfdda9d7SSteve Wise connect_reply_upcall(ep, -ECONNRESET); 2712cfdda9d7SSteve Wise break; 2713cfdda9d7SSteve Wise case MPA_REQ_RCVD: 2714cfdda9d7SSteve Wise 2715cfdda9d7SSteve Wise /* 2716cfdda9d7SSteve Wise * We're gonna mark this puppy DEAD, but keep 2717cfdda9d7SSteve Wise * the reference on it until the ULP accepts or 2718cfdda9d7SSteve Wise * rejects the CR. Also wake up anyone waiting 2719cfdda9d7SSteve Wise * in rdma connection migration (see c4iw_accept_cr()). 2720cfdda9d7SSteve Wise */ 2721cfdda9d7SSteve Wise __state_set(&ep->com, CLOSING); 2722cfdda9d7SSteve Wise PDBG("waking up ep %p tid %u\n", ep, ep->hwtid); 2723d9594d99SSteve Wise c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); 2724cfdda9d7SSteve Wise break; 2725cfdda9d7SSteve Wise case MPA_REP_SENT: 2726cfdda9d7SSteve Wise __state_set(&ep->com, CLOSING); 2727cfdda9d7SSteve Wise PDBG("waking up ep %p tid %u\n", ep, ep->hwtid); 2728d9594d99SSteve Wise c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); 2729cfdda9d7SSteve Wise break; 2730cfdda9d7SSteve Wise case FPDU_MODE: 2731ca5a2202SSteve Wise start_ep_timer(ep); 2732cfdda9d7SSteve Wise __state_set(&ep->com, CLOSING); 273330c95c2dSSteve Wise attrs.next_state = C4IW_QP_STATE_CLOSING; 27348da7e7a5SSteve Wise ret = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 273530c95c2dSSteve Wise C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 27368da7e7a5SSteve Wise if (ret != -ECONNRESET) { 2737cfdda9d7SSteve Wise peer_close_upcall(ep); 273830c95c2dSSteve Wise disconnect = 1; 27398da7e7a5SSteve Wise } 2740cfdda9d7SSteve Wise break; 2741cfdda9d7SSteve Wise case ABORTING: 2742cfdda9d7SSteve Wise disconnect = 0; 2743cfdda9d7SSteve Wise break; 2744cfdda9d7SSteve Wise case CLOSING: 2745cfdda9d7SSteve Wise __state_set(&ep->com, MORIBUND); 2746cfdda9d7SSteve Wise disconnect = 0; 2747cfdda9d7SSteve Wise break; 2748cfdda9d7SSteve Wise case MORIBUND: 2749b33bd0cbSSteve Wise (void)stop_ep_timer(ep); 2750cfdda9d7SSteve Wise if (ep->com.cm_id && ep->com.qp) { 2751cfdda9d7SSteve Wise attrs.next_state = C4IW_QP_STATE_IDLE; 2752cfdda9d7SSteve Wise c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 2753cfdda9d7SSteve Wise C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 2754cfdda9d7SSteve Wise } 2755be13b2dfSSteve Wise close_complete_upcall(ep, 0); 2756cfdda9d7SSteve Wise __state_set(&ep->com, DEAD); 2757cfdda9d7SSteve Wise release = 1; 2758cfdda9d7SSteve Wise disconnect = 0; 2759cfdda9d7SSteve Wise break; 2760cfdda9d7SSteve Wise case DEAD: 2761cfdda9d7SSteve Wise disconnect = 0; 2762cfdda9d7SSteve Wise break; 2763cfdda9d7SSteve Wise default: 2764cfdda9d7SSteve Wise BUG_ON(1); 2765cfdda9d7SSteve Wise } 27662f5b48c3SSteve Wise mutex_unlock(&ep->com.mutex); 2767cfdda9d7SSteve Wise if (disconnect) 2768cfdda9d7SSteve Wise c4iw_ep_disconnect(ep, 0, GFP_KERNEL); 2769cfdda9d7SSteve Wise if (release) 2770cfdda9d7SSteve Wise release_ep_resources(ep); 2771944661ddSHariprasad S c4iw_put_ep(&ep->com); 2772cfdda9d7SSteve Wise return 0; 2773cfdda9d7SSteve Wise } 2774cfdda9d7SSteve Wise 2775cfdda9d7SSteve Wise static int peer_abort(struct c4iw_dev *dev, struct sk_buff *skb) 2776cfdda9d7SSteve Wise { 2777cfdda9d7SSteve Wise struct cpl_abort_req_rss *req = cplhdr(skb); 2778cfdda9d7SSteve Wise struct c4iw_ep *ep; 2779cfdda9d7SSteve Wise struct cpl_abort_rpl *rpl; 2780cfdda9d7SSteve Wise struct sk_buff *rpl_skb; 2781cfdda9d7SSteve Wise struct c4iw_qp_attributes attrs; 2782cfdda9d7SSteve Wise int ret; 2783cfdda9d7SSteve Wise int release = 0; 2784cfdda9d7SSteve Wise unsigned int tid = GET_TID(req); 2785cfdda9d7SSteve Wise 2786944661ddSHariprasad S ep = get_ep_from_tid(dev, tid); 2787944661ddSHariprasad S if (!ep) 2788944661ddSHariprasad S return 0; 2789944661ddSHariprasad S 27907a2cea2aSSteve Wise if (is_neg_adv(req->status)) { 2791179d03bbSHariprasad S PDBG("%s Negative advice on abort- tid %u status %d (%s)\n", 2792179d03bbSHariprasad S __func__, ep->hwtid, req->status, 2793179d03bbSHariprasad S neg_adv_str(req->status)); 2794179d03bbSHariprasad S ep->stats.abort_neg_adv++; 2795179d03bbSHariprasad S mutex_lock(&dev->rdev.stats.lock); 2796179d03bbSHariprasad S dev->rdev.stats.neg_adv++; 2797179d03bbSHariprasad S mutex_unlock(&dev->rdev.stats.lock); 2798944661ddSHariprasad S goto deref_ep; 2799cfdda9d7SSteve Wise } 2800cfdda9d7SSteve Wise PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid, 2801cfdda9d7SSteve Wise ep->com.state); 2802793dad94SVipul Pandya set_bit(PEER_ABORT, &ep->com.history); 28032f5b48c3SSteve Wise 28042f5b48c3SSteve Wise /* 28052f5b48c3SSteve Wise * Wake up any threads in rdma_init() or rdma_fini(). 2806d2fe99e8SKumar Sanghvi * However, this is not needed if com state is just 2807d2fe99e8SKumar Sanghvi * MPA_REQ_SENT 28082f5b48c3SSteve Wise */ 2809d2fe99e8SKumar Sanghvi if (ep->com.state != MPA_REQ_SENT) 2810d9594d99SSteve Wise c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); 28112f5b48c3SSteve Wise 28122f5b48c3SSteve Wise mutex_lock(&ep->com.mutex); 2813cfdda9d7SSteve Wise switch (ep->com.state) { 2814cfdda9d7SSteve Wise case CONNECTING: 28159dec900cSHariprasad S c4iw_put_ep(&ep->parent_ep->com); 2816cfdda9d7SSteve Wise break; 2817cfdda9d7SSteve Wise case MPA_REQ_WAIT: 2818b33bd0cbSSteve Wise (void)stop_ep_timer(ep); 2819cfdda9d7SSteve Wise break; 2820cfdda9d7SSteve Wise case MPA_REQ_SENT: 2821b33bd0cbSSteve Wise (void)stop_ep_timer(ep); 2822fe7e0a4dSVipul Pandya if (mpa_rev == 1 || (mpa_rev == 2 && ep->tried_with_mpa_v1)) 2823cfdda9d7SSteve Wise connect_reply_upcall(ep, -ECONNRESET); 2824d2fe99e8SKumar Sanghvi else { 2825d2fe99e8SKumar Sanghvi /* 2826d2fe99e8SKumar Sanghvi * we just don't send notification upwards because we 2827d2fe99e8SKumar Sanghvi * want to retry with mpa_v1 without upper layers even 2828d2fe99e8SKumar Sanghvi * knowing it. 2829d2fe99e8SKumar Sanghvi * 2830d2fe99e8SKumar Sanghvi * do some housekeeping so as to re-initiate the 2831d2fe99e8SKumar Sanghvi * connection 2832d2fe99e8SKumar Sanghvi */ 2833d2fe99e8SKumar Sanghvi PDBG("%s: mpa_rev=%d. Retrying with mpav1\n", __func__, 2834d2fe99e8SKumar Sanghvi mpa_rev); 2835d2fe99e8SKumar Sanghvi ep->retry_with_mpa_v1 = 1; 2836d2fe99e8SKumar Sanghvi } 2837cfdda9d7SSteve Wise break; 2838cfdda9d7SSteve Wise case MPA_REP_SENT: 2839cfdda9d7SSteve Wise break; 2840cfdda9d7SSteve Wise case MPA_REQ_RCVD: 2841cfdda9d7SSteve Wise break; 2842cfdda9d7SSteve Wise case MORIBUND: 2843cfdda9d7SSteve Wise case CLOSING: 2844ca5a2202SSteve Wise stop_ep_timer(ep); 2845cfdda9d7SSteve Wise /*FALLTHROUGH*/ 2846cfdda9d7SSteve Wise case FPDU_MODE: 2847cfdda9d7SSteve Wise if (ep->com.cm_id && ep->com.qp) { 2848cfdda9d7SSteve Wise attrs.next_state = C4IW_QP_STATE_ERROR; 2849cfdda9d7SSteve Wise ret = c4iw_modify_qp(ep->com.qp->rhp, 2850cfdda9d7SSteve Wise ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, 2851cfdda9d7SSteve Wise &attrs, 1); 2852cfdda9d7SSteve Wise if (ret) 2853cfdda9d7SSteve Wise printk(KERN_ERR MOD 2854cfdda9d7SSteve Wise "%s - qp <- error failed!\n", 2855cfdda9d7SSteve Wise __func__); 2856cfdda9d7SSteve Wise } 2857cfdda9d7SSteve Wise peer_abort_upcall(ep); 2858cfdda9d7SSteve Wise break; 2859cfdda9d7SSteve Wise case ABORTING: 2860cfdda9d7SSteve Wise break; 2861cfdda9d7SSteve Wise case DEAD: 2862cfdda9d7SSteve Wise PDBG("%s PEER_ABORT IN DEAD STATE!!!!\n", __func__); 28632f5b48c3SSteve Wise mutex_unlock(&ep->com.mutex); 2864944661ddSHariprasad S goto deref_ep; 2865cfdda9d7SSteve Wise default: 2866cfdda9d7SSteve Wise BUG_ON(1); 2867cfdda9d7SSteve Wise break; 2868cfdda9d7SSteve Wise } 2869cfdda9d7SSteve Wise dst_confirm(ep->dst); 2870cfdda9d7SSteve Wise if (ep->com.state != ABORTING) { 2871cfdda9d7SSteve Wise __state_set(&ep->com, DEAD); 2872d2fe99e8SKumar Sanghvi /* we don't release if we want to retry with mpa_v1 */ 2873d2fe99e8SKumar Sanghvi if (!ep->retry_with_mpa_v1) 2874cfdda9d7SSteve Wise release = 1; 2875cfdda9d7SSteve Wise } 28762f5b48c3SSteve Wise mutex_unlock(&ep->com.mutex); 2877cfdda9d7SSteve Wise 28784a740838SHariprasad S rpl_skb = skb_dequeue(&ep->com.ep_skb_list); 28794a740838SHariprasad S if (WARN_ON(!rpl_skb)) { 2880cfdda9d7SSteve Wise release = 1; 2881cfdda9d7SSteve Wise goto out; 2882cfdda9d7SSteve Wise } 2883cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); 2884cfdda9d7SSteve Wise rpl = (struct cpl_abort_rpl *) skb_put(rpl_skb, sizeof(*rpl)); 2885cfdda9d7SSteve Wise INIT_TP_WR(rpl, ep->hwtid); 2886cfdda9d7SSteve Wise OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_RPL, ep->hwtid)); 2887cfdda9d7SSteve Wise rpl->cmd = CPL_ABORT_NO_RST; 2888cfdda9d7SSteve Wise c4iw_ofld_send(&ep->com.dev->rdev, rpl_skb); 2889cfdda9d7SSteve Wise out: 2890cfdda9d7SSteve Wise if (release) 2891cfdda9d7SSteve Wise release_ep_resources(ep); 2892fe7e0a4dSVipul Pandya else if (ep->retry_with_mpa_v1) { 289384cc6ac6SHariprasad S if (ep->com.remote_addr.ss_family == AF_INET6) { 289484cc6ac6SHariprasad S struct sockaddr_in6 *sin6 = 289584cc6ac6SHariprasad S (struct sockaddr_in6 *) 2896170003c8SSteve Wise &ep->com.local_addr; 289784cc6ac6SHariprasad S cxgb4_clip_release( 289884cc6ac6SHariprasad S ep->com.dev->rdev.lldi.ports[0], 289984cc6ac6SHariprasad S (const u32 *)&sin6->sin6_addr.s6_addr, 290084cc6ac6SHariprasad S 1); 290184cc6ac6SHariprasad S } 2902fe7e0a4dSVipul Pandya remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid); 2903d2fe99e8SKumar Sanghvi cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid); 2904d2fe99e8SKumar Sanghvi dst_release(ep->dst); 2905d2fe99e8SKumar Sanghvi cxgb4_l2t_release(ep->l2t); 2906d2fe99e8SKumar Sanghvi c4iw_reconnect(ep); 2907d2fe99e8SKumar Sanghvi } 2908d2fe99e8SKumar Sanghvi 2909944661ddSHariprasad S deref_ep: 2910944661ddSHariprasad S c4iw_put_ep(&ep->com); 2911944661ddSHariprasad S /* Dereferencing ep, referenced in peer_abort_intr() */ 2912944661ddSHariprasad S c4iw_put_ep(&ep->com); 2913cfdda9d7SSteve Wise return 0; 2914cfdda9d7SSteve Wise } 2915cfdda9d7SSteve Wise 2916cfdda9d7SSteve Wise static int close_con_rpl(struct c4iw_dev *dev, struct sk_buff *skb) 2917cfdda9d7SSteve Wise { 2918cfdda9d7SSteve Wise struct c4iw_ep *ep; 2919cfdda9d7SSteve Wise struct c4iw_qp_attributes attrs; 2920cfdda9d7SSteve Wise struct cpl_close_con_rpl *rpl = cplhdr(skb); 2921cfdda9d7SSteve Wise int release = 0; 2922cfdda9d7SSteve Wise unsigned int tid = GET_TID(rpl); 2923cfdda9d7SSteve Wise 2924944661ddSHariprasad S ep = get_ep_from_tid(dev, tid); 2925944661ddSHariprasad S if (!ep) 2926944661ddSHariprasad S return 0; 2927cfdda9d7SSteve Wise 2928cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 2929cfdda9d7SSteve Wise BUG_ON(!ep); 2930cfdda9d7SSteve Wise 2931cfdda9d7SSteve Wise /* The cm_id may be null if we failed to connect */ 29322f5b48c3SSteve Wise mutex_lock(&ep->com.mutex); 29339ca6f7cfSHariprasad S set_bit(CLOSE_CON_RPL, &ep->com.history); 2934cfdda9d7SSteve Wise switch (ep->com.state) { 2935cfdda9d7SSteve Wise case CLOSING: 2936cfdda9d7SSteve Wise __state_set(&ep->com, MORIBUND); 2937cfdda9d7SSteve Wise break; 2938cfdda9d7SSteve Wise case MORIBUND: 2939b33bd0cbSSteve Wise (void)stop_ep_timer(ep); 2940cfdda9d7SSteve Wise if ((ep->com.cm_id) && (ep->com.qp)) { 2941cfdda9d7SSteve Wise attrs.next_state = C4IW_QP_STATE_IDLE; 2942cfdda9d7SSteve Wise c4iw_modify_qp(ep->com.qp->rhp, 2943cfdda9d7SSteve Wise ep->com.qp, 2944cfdda9d7SSteve Wise C4IW_QP_ATTR_NEXT_STATE, 2945cfdda9d7SSteve Wise &attrs, 1); 2946cfdda9d7SSteve Wise } 2947be13b2dfSSteve Wise close_complete_upcall(ep, 0); 2948cfdda9d7SSteve Wise __state_set(&ep->com, DEAD); 2949cfdda9d7SSteve Wise release = 1; 2950cfdda9d7SSteve Wise break; 2951cfdda9d7SSteve Wise case ABORTING: 2952cfdda9d7SSteve Wise case DEAD: 2953cfdda9d7SSteve Wise break; 2954cfdda9d7SSteve Wise default: 2955cfdda9d7SSteve Wise BUG_ON(1); 2956cfdda9d7SSteve Wise break; 2957cfdda9d7SSteve Wise } 29582f5b48c3SSteve Wise mutex_unlock(&ep->com.mutex); 2959cfdda9d7SSteve Wise if (release) 2960cfdda9d7SSteve Wise release_ep_resources(ep); 2961944661ddSHariprasad S c4iw_put_ep(&ep->com); 2962cfdda9d7SSteve Wise return 0; 2963cfdda9d7SSteve Wise } 2964cfdda9d7SSteve Wise 2965cfdda9d7SSteve Wise static int terminate(struct c4iw_dev *dev, struct sk_buff *skb) 2966cfdda9d7SSteve Wise { 29670e42c1f4SSteve Wise struct cpl_rdma_terminate *rpl = cplhdr(skb); 29680e42c1f4SSteve Wise unsigned int tid = GET_TID(rpl); 29690e42c1f4SSteve Wise struct c4iw_ep *ep; 29700e42c1f4SSteve Wise struct c4iw_qp_attributes attrs; 2971cfdda9d7SSteve Wise 2972944661ddSHariprasad S ep = get_ep_from_tid(dev, tid); 29730e42c1f4SSteve Wise BUG_ON(!ep); 2974cfdda9d7SSteve Wise 297530c95c2dSSteve Wise if (ep && ep->com.qp) { 29760e42c1f4SSteve Wise printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", tid, 29770e42c1f4SSteve Wise ep->com.qp->wq.sq.qid); 29780e42c1f4SSteve Wise attrs.next_state = C4IW_QP_STATE_TERMINATE; 29790e42c1f4SSteve Wise c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 29800e42c1f4SSteve Wise C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 29810e42c1f4SSteve Wise } else 298230c95c2dSSteve Wise printk(KERN_WARNING MOD "TERM received tid %u no ep/qp\n", tid); 2983944661ddSHariprasad S c4iw_put_ep(&ep->com); 2984cfdda9d7SSteve Wise 2985cfdda9d7SSteve Wise return 0; 2986cfdda9d7SSteve Wise } 2987cfdda9d7SSteve Wise 2988cfdda9d7SSteve Wise /* 2989cfdda9d7SSteve Wise * Upcall from the adapter indicating data has been transmitted. 2990cfdda9d7SSteve Wise * For us its just the single MPA request or reply. We can now free 2991cfdda9d7SSteve Wise * the skb holding the mpa message. 2992cfdda9d7SSteve Wise */ 2993cfdda9d7SSteve Wise static int fw4_ack(struct c4iw_dev *dev, struct sk_buff *skb) 2994cfdda9d7SSteve Wise { 2995cfdda9d7SSteve Wise struct c4iw_ep *ep; 2996cfdda9d7SSteve Wise struct cpl_fw4_ack *hdr = cplhdr(skb); 2997cfdda9d7SSteve Wise u8 credits = hdr->credits; 2998cfdda9d7SSteve Wise unsigned int tid = GET_TID(hdr); 2999cfdda9d7SSteve Wise 3000cfdda9d7SSteve Wise 3001944661ddSHariprasad S ep = get_ep_from_tid(dev, tid); 3002944661ddSHariprasad S if (!ep) 3003944661ddSHariprasad S return 0; 3004cfdda9d7SSteve Wise PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits); 3005cfdda9d7SSteve Wise if (credits == 0) { 3006aa1ad260SJoe Perches PDBG("%s 0 credit ack ep %p tid %u state %u\n", 3007cfdda9d7SSteve Wise __func__, ep, ep->hwtid, state_read(&ep->com)); 3008944661ddSHariprasad S goto out; 3009cfdda9d7SSteve Wise } 3010cfdda9d7SSteve Wise 3011cfdda9d7SSteve Wise dst_confirm(ep->dst); 3012cfdda9d7SSteve Wise if (ep->mpa_skb) { 3013cfdda9d7SSteve Wise PDBG("%s last streaming msg ack ep %p tid %u state %u " 3014cfdda9d7SSteve Wise "initiator %u freeing skb\n", __func__, ep, ep->hwtid, 3015cfdda9d7SSteve Wise state_read(&ep->com), ep->mpa_attr.initiator ? 1 : 0); 301612eb5137SSteve Wise mutex_lock(&ep->com.mutex); 3017cfdda9d7SSteve Wise kfree_skb(ep->mpa_skb); 3018cfdda9d7SSteve Wise ep->mpa_skb = NULL; 3019e4b76a2aSHariprasad S if (test_bit(STOP_MPA_TIMER, &ep->com.flags)) 3020e4b76a2aSHariprasad S stop_ep_timer(ep); 3021e4b76a2aSHariprasad S mutex_unlock(&ep->com.mutex); 3022cfdda9d7SSteve Wise } 3023944661ddSHariprasad S out: 3024944661ddSHariprasad S c4iw_put_ep(&ep->com); 3025cfdda9d7SSteve Wise return 0; 3026cfdda9d7SSteve Wise } 3027cfdda9d7SSteve Wise 3028cfdda9d7SSteve Wise int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) 3029cfdda9d7SSteve Wise { 3030bce2841fSHariprasad S int abort; 3031cfdda9d7SSteve Wise struct c4iw_ep *ep = to_ep(cm_id); 3032bce2841fSHariprasad S 3033cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 3034cfdda9d7SSteve Wise 3035a7db89ebSSteve Wise mutex_lock(&ep->com.mutex); 3036e8667a9bSHariprasad S if (ep->com.state != MPA_REQ_RCVD) { 3037a7db89ebSSteve Wise mutex_unlock(&ep->com.mutex); 3038cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 3039cfdda9d7SSteve Wise return -ECONNRESET; 3040cfdda9d7SSteve Wise } 3041793dad94SVipul Pandya set_bit(ULP_REJECT, &ep->com.history); 3042cfdda9d7SSteve Wise if (mpa_rev == 0) 3043bce2841fSHariprasad S abort = 1; 3044bce2841fSHariprasad S else 3045bce2841fSHariprasad S abort = send_mpa_reject(ep, pdata, pdata_len); 3046a7db89ebSSteve Wise mutex_unlock(&ep->com.mutex); 3047bce2841fSHariprasad S 3048e4b76a2aSHariprasad S stop_ep_timer(ep); 3049bce2841fSHariprasad S c4iw_ep_disconnect(ep, abort != 0, GFP_KERNEL); 3050cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 3051cfdda9d7SSteve Wise return 0; 3052cfdda9d7SSteve Wise } 3053cfdda9d7SSteve Wise 3054cfdda9d7SSteve Wise int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 3055cfdda9d7SSteve Wise { 3056cfdda9d7SSteve Wise int err; 3057cfdda9d7SSteve Wise struct c4iw_qp_attributes attrs; 3058cfdda9d7SSteve Wise enum c4iw_qp_attr_mask mask; 3059cfdda9d7SSteve Wise struct c4iw_ep *ep = to_ep(cm_id); 3060cfdda9d7SSteve Wise struct c4iw_dev *h = to_c4iw_dev(cm_id->device); 3061cfdda9d7SSteve Wise struct c4iw_qp *qp = get_qhp(h, conn_param->qpn); 3062eaf4c6d4SHariprasad S int abort = 0; 3063cfdda9d7SSteve Wise 3064cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 3065a7db89ebSSteve Wise 3066a7db89ebSSteve Wise mutex_lock(&ep->com.mutex); 3067e8667a9bSHariprasad S if (ep->com.state != MPA_REQ_RCVD) { 3068cfdda9d7SSteve Wise err = -ECONNRESET; 3069eaf4c6d4SHariprasad S goto err_out; 3070cfdda9d7SSteve Wise } 3071cfdda9d7SSteve Wise 3072cfdda9d7SSteve Wise BUG_ON(!qp); 3073cfdda9d7SSteve Wise 3074793dad94SVipul Pandya set_bit(ULP_ACCEPT, &ep->com.history); 30754c2c5763SHariprasad Shenai if ((conn_param->ord > cur_max_read_depth(ep->com.dev)) || 30764c2c5763SHariprasad Shenai (conn_param->ird > cur_max_read_depth(ep->com.dev))) { 3077cfdda9d7SSteve Wise err = -EINVAL; 3078eaf4c6d4SHariprasad S goto err_abort; 3079cfdda9d7SSteve Wise } 3080cfdda9d7SSteve Wise 3081d2fe99e8SKumar Sanghvi if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 3082d2fe99e8SKumar Sanghvi if (conn_param->ord > ep->ird) { 30834c2c5763SHariprasad Shenai if (RELAXED_IRD_NEGOTIATION) { 308430b03b15SSteve Wise conn_param->ord = ep->ird; 30854c2c5763SHariprasad Shenai } else { 3086d2fe99e8SKumar Sanghvi ep->ird = conn_param->ird; 3087d2fe99e8SKumar Sanghvi ep->ord = conn_param->ord; 3088d2fe99e8SKumar Sanghvi send_mpa_reject(ep, conn_param->private_data, 3089d2fe99e8SKumar Sanghvi conn_param->private_data_len); 3090d2fe99e8SKumar Sanghvi err = -ENOMEM; 3091eaf4c6d4SHariprasad S goto err_abort; 3092d2fe99e8SKumar Sanghvi } 30934c2c5763SHariprasad Shenai } 30944c2c5763SHariprasad Shenai if (conn_param->ird < ep->ord) { 30954c2c5763SHariprasad Shenai if (RELAXED_IRD_NEGOTIATION && 30964c2c5763SHariprasad Shenai ep->ord <= h->rdev.lldi.max_ordird_qp) { 30974c2c5763SHariprasad Shenai conn_param->ird = ep->ord; 30984c2c5763SHariprasad Shenai } else { 3099d2fe99e8SKumar Sanghvi err = -ENOMEM; 3100eaf4c6d4SHariprasad S goto err_abort; 3101d2fe99e8SKumar Sanghvi } 3102d2fe99e8SKumar Sanghvi } 3103d2fe99e8SKumar Sanghvi } 3104cfdda9d7SSteve Wise ep->ird = conn_param->ird; 3105cfdda9d7SSteve Wise ep->ord = conn_param->ord; 3106cfdda9d7SSteve Wise 31074c2c5763SHariprasad Shenai if (ep->mpa_attr.version == 1) { 3108cfdda9d7SSteve Wise if (peer2peer && ep->ird == 0) 3109cfdda9d7SSteve Wise ep->ird = 1; 31104c2c5763SHariprasad Shenai } else { 31114c2c5763SHariprasad Shenai if (peer2peer && 31124c2c5763SHariprasad Shenai (ep->mpa_attr.p2p_type != FW_RI_INIT_P2PTYPE_DISABLED) && 3113f57b780cSHariprasad S (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) && ep->ird == 0) 31144c2c5763SHariprasad Shenai ep->ird = 1; 31154c2c5763SHariprasad Shenai } 3116cfdda9d7SSteve Wise 3117cfdda9d7SSteve Wise PDBG("%s %d ird %d ord %d\n", __func__, __LINE__, ep->ird, ep->ord); 3118cfdda9d7SSteve Wise 3119d2fe99e8SKumar Sanghvi ep->com.cm_id = cm_id; 31209ca6f7cfSHariprasad S ref_cm_id(&ep->com); 3121d2fe99e8SKumar Sanghvi ep->com.qp = qp; 3122325abeadSVipul Pandya ref_qp(ep); 3123d2fe99e8SKumar Sanghvi 3124cfdda9d7SSteve Wise /* bind QP to EP and move to RTS */ 3125cfdda9d7SSteve Wise attrs.mpa_attr = ep->mpa_attr; 3126cfdda9d7SSteve Wise attrs.max_ird = ep->ird; 3127cfdda9d7SSteve Wise attrs.max_ord = ep->ord; 3128cfdda9d7SSteve Wise attrs.llp_stream_handle = ep; 3129cfdda9d7SSteve Wise attrs.next_state = C4IW_QP_STATE_RTS; 3130cfdda9d7SSteve Wise 3131cfdda9d7SSteve Wise /* bind QP and TID with INIT_WR */ 3132cfdda9d7SSteve Wise mask = C4IW_QP_ATTR_NEXT_STATE | 3133cfdda9d7SSteve Wise C4IW_QP_ATTR_LLP_STREAM_HANDLE | 3134cfdda9d7SSteve Wise C4IW_QP_ATTR_MPA_ATTR | 3135cfdda9d7SSteve Wise C4IW_QP_ATTR_MAX_IRD | 3136cfdda9d7SSteve Wise C4IW_QP_ATTR_MAX_ORD; 3137cfdda9d7SSteve Wise 3138cfdda9d7SSteve Wise err = c4iw_modify_qp(ep->com.qp->rhp, 3139cfdda9d7SSteve Wise ep->com.qp, mask, &attrs, 1); 3140cfdda9d7SSteve Wise if (err) 3141eaf4c6d4SHariprasad S goto err_deref_cm_id; 3142e4b76a2aSHariprasad S 3143e4b76a2aSHariprasad S set_bit(STOP_MPA_TIMER, &ep->com.flags); 3144cfdda9d7SSteve Wise err = send_mpa_reply(ep, conn_param->private_data, 3145cfdda9d7SSteve Wise conn_param->private_data_len); 3146cfdda9d7SSteve Wise if (err) 3147eaf4c6d4SHariprasad S goto err_deref_cm_id; 3148cfdda9d7SSteve Wise 3149a7db89ebSSteve Wise __state_set(&ep->com, FPDU_MODE); 3150cfdda9d7SSteve Wise established_upcall(ep); 3151a7db89ebSSteve Wise mutex_unlock(&ep->com.mutex); 3152cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 3153cfdda9d7SSteve Wise return 0; 3154eaf4c6d4SHariprasad S err_deref_cm_id: 31559ca6f7cfSHariprasad S deref_cm_id(&ep->com); 3156eaf4c6d4SHariprasad S err_abort: 3157eaf4c6d4SHariprasad S abort = 1; 3158eaf4c6d4SHariprasad S err_out: 3159a7db89ebSSteve Wise mutex_unlock(&ep->com.mutex); 3160eaf4c6d4SHariprasad S if (abort) 3161eaf4c6d4SHariprasad S c4iw_ep_disconnect(ep, 1, GFP_KERNEL); 3162cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 3163cfdda9d7SSteve Wise return err; 3164cfdda9d7SSteve Wise } 3165cfdda9d7SSteve Wise 3166830662f6SVipul Pandya static int pick_local_ipaddrs(struct c4iw_dev *dev, struct iw_cm_id *cm_id) 3167830662f6SVipul Pandya { 3168830662f6SVipul Pandya struct in_device *ind; 3169830662f6SVipul Pandya int found = 0; 3170170003c8SSteve Wise struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->m_local_addr; 3171170003c8SSteve Wise struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->m_remote_addr; 3172830662f6SVipul Pandya 3173830662f6SVipul Pandya ind = in_dev_get(dev->rdev.lldi.ports[0]); 3174830662f6SVipul Pandya if (!ind) 3175830662f6SVipul Pandya return -EADDRNOTAVAIL; 3176830662f6SVipul Pandya for_primary_ifa(ind) { 3177830662f6SVipul Pandya laddr->sin_addr.s_addr = ifa->ifa_address; 3178830662f6SVipul Pandya raddr->sin_addr.s_addr = ifa->ifa_address; 3179830662f6SVipul Pandya found = 1; 3180830662f6SVipul Pandya break; 3181830662f6SVipul Pandya } 3182830662f6SVipul Pandya endfor_ifa(ind); 3183830662f6SVipul Pandya in_dev_put(ind); 3184830662f6SVipul Pandya return found ? 0 : -EADDRNOTAVAIL; 3185830662f6SVipul Pandya } 3186830662f6SVipul Pandya 3187830662f6SVipul Pandya static int get_lladdr(struct net_device *dev, struct in6_addr *addr, 3188830662f6SVipul Pandya unsigned char banned_flags) 3189830662f6SVipul Pandya { 3190830662f6SVipul Pandya struct inet6_dev *idev; 3191830662f6SVipul Pandya int err = -EADDRNOTAVAIL; 3192830662f6SVipul Pandya 3193830662f6SVipul Pandya rcu_read_lock(); 3194830662f6SVipul Pandya idev = __in6_dev_get(dev); 3195830662f6SVipul Pandya if (idev != NULL) { 3196830662f6SVipul Pandya struct inet6_ifaddr *ifp; 3197830662f6SVipul Pandya 3198830662f6SVipul Pandya read_lock_bh(&idev->lock); 3199830662f6SVipul Pandya list_for_each_entry(ifp, &idev->addr_list, if_list) { 3200830662f6SVipul Pandya if (ifp->scope == IFA_LINK && 3201830662f6SVipul Pandya !(ifp->flags & banned_flags)) { 3202830662f6SVipul Pandya memcpy(addr, &ifp->addr, 16); 3203830662f6SVipul Pandya err = 0; 3204830662f6SVipul Pandya break; 3205830662f6SVipul Pandya } 3206830662f6SVipul Pandya } 3207830662f6SVipul Pandya read_unlock_bh(&idev->lock); 3208830662f6SVipul Pandya } 3209830662f6SVipul Pandya rcu_read_unlock(); 3210830662f6SVipul Pandya return err; 3211830662f6SVipul Pandya } 3212830662f6SVipul Pandya 3213830662f6SVipul Pandya static int pick_local_ip6addrs(struct c4iw_dev *dev, struct iw_cm_id *cm_id) 3214830662f6SVipul Pandya { 3215830662f6SVipul Pandya struct in6_addr uninitialized_var(addr); 3216170003c8SSteve Wise struct sockaddr_in6 *la6 = (struct sockaddr_in6 *)&cm_id->m_local_addr; 3217170003c8SSteve Wise struct sockaddr_in6 *ra6 = (struct sockaddr_in6 *)&cm_id->m_remote_addr; 3218830662f6SVipul Pandya 321954b9a96fSNicholas Krause if (!get_lladdr(dev->rdev.lldi.ports[0], &addr, IFA_F_TENTATIVE)) { 3220830662f6SVipul Pandya memcpy(la6->sin6_addr.s6_addr, &addr, 16); 3221830662f6SVipul Pandya memcpy(ra6->sin6_addr.s6_addr, &addr, 16); 3222830662f6SVipul Pandya return 0; 3223830662f6SVipul Pandya } 3224830662f6SVipul Pandya return -EADDRNOTAVAIL; 3225830662f6SVipul Pandya } 3226830662f6SVipul Pandya 3227cfdda9d7SSteve Wise int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 3228cfdda9d7SSteve Wise { 3229cfdda9d7SSteve Wise struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 3230cfdda9d7SSteve Wise struct c4iw_ep *ep; 32313786cf18SDavid Miller int err = 0; 32329eccfe10SSteve Wise struct sockaddr_in *laddr; 32339eccfe10SSteve Wise struct sockaddr_in *raddr; 32349eccfe10SSteve Wise struct sockaddr_in6 *laddr6; 32359eccfe10SSteve Wise struct sockaddr_in6 *raddr6; 3236830662f6SVipul Pandya __u8 *ra; 3237830662f6SVipul Pandya int iptype; 3238cfdda9d7SSteve Wise 32394c2c5763SHariprasad Shenai if ((conn_param->ord > cur_max_read_depth(dev)) || 32404c2c5763SHariprasad Shenai (conn_param->ird > cur_max_read_depth(dev))) { 3241be4c9badSRoland Dreier err = -EINVAL; 3242be4c9badSRoland Dreier goto out; 3243be4c9badSRoland Dreier } 3244cfdda9d7SSteve Wise ep = alloc_ep(sizeof(*ep), GFP_KERNEL); 3245cfdda9d7SSteve Wise if (!ep) { 3246cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); 3247cfdda9d7SSteve Wise err = -ENOMEM; 3248cfdda9d7SSteve Wise goto out; 3249cfdda9d7SSteve Wise } 32504a740838SHariprasad S 32514a740838SHariprasad S skb_queue_head_init(&ep->com.ep_skb_list); 32524a740838SHariprasad S if (alloc_ep_skb_list(&ep->com.ep_skb_list, CN_MAX_CON_BUF)) { 32534a740838SHariprasad S err = -ENOMEM; 32544a740838SHariprasad S goto fail1; 32554a740838SHariprasad S } 32564a740838SHariprasad S 3257cfdda9d7SSteve Wise init_timer(&ep->timer); 3258cfdda9d7SSteve Wise ep->plen = conn_param->private_data_len; 3259cfdda9d7SSteve Wise if (ep->plen) 3260cfdda9d7SSteve Wise memcpy(ep->mpa_pkt + sizeof(struct mpa_message), 3261cfdda9d7SSteve Wise conn_param->private_data, ep->plen); 3262cfdda9d7SSteve Wise ep->ird = conn_param->ird; 3263cfdda9d7SSteve Wise ep->ord = conn_param->ord; 3264cfdda9d7SSteve Wise 3265cfdda9d7SSteve Wise if (peer2peer && ep->ord == 0) 3266cfdda9d7SSteve Wise ep->ord = 1; 3267cfdda9d7SSteve Wise 3268cfdda9d7SSteve Wise ep->com.cm_id = cm_id; 32699ca6f7cfSHariprasad S ref_cm_id(&ep->com); 32709ca6f7cfSHariprasad S ep->com.dev = dev; 3271cfdda9d7SSteve Wise ep->com.qp = get_qhp(dev, conn_param->qpn); 3272830662f6SVipul Pandya if (!ep->com.qp) { 3273830662f6SVipul Pandya PDBG("%s qpn 0x%x not found!\n", __func__, conn_param->qpn); 3274830662f6SVipul Pandya err = -EINVAL; 32754a740838SHariprasad S goto fail2; 3276830662f6SVipul Pandya } 3277325abeadSVipul Pandya ref_qp(ep); 3278cfdda9d7SSteve Wise PDBG("%s qpn 0x%x qp %p cm_id %p\n", __func__, conn_param->qpn, 3279cfdda9d7SSteve Wise ep->com.qp, cm_id); 3280cfdda9d7SSteve Wise 3281cfdda9d7SSteve Wise /* 3282cfdda9d7SSteve Wise * Allocate an active TID to initiate a TCP connection. 3283cfdda9d7SSteve Wise */ 3284cfdda9d7SSteve Wise ep->atid = cxgb4_alloc_atid(dev->rdev.lldi.tids, ep); 3285cfdda9d7SSteve Wise if (ep->atid == -1) { 3286cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __func__); 3287cfdda9d7SSteve Wise err = -ENOMEM; 32884a740838SHariprasad S goto fail2; 3289cfdda9d7SSteve Wise } 3290793dad94SVipul Pandya insert_handle(dev, &dev->atid_idr, ep, ep->atid); 3291cfdda9d7SSteve Wise 3292170003c8SSteve Wise memcpy(&ep->com.local_addr, &cm_id->m_local_addr, 32939eccfe10SSteve Wise sizeof(ep->com.local_addr)); 3294170003c8SSteve Wise memcpy(&ep->com.remote_addr, &cm_id->m_remote_addr, 32959eccfe10SSteve Wise sizeof(ep->com.remote_addr)); 32969eccfe10SSteve Wise 3297170003c8SSteve Wise laddr = (struct sockaddr_in *)&ep->com.local_addr; 3298170003c8SSteve Wise raddr = (struct sockaddr_in *)&ep->com.remote_addr; 3299170003c8SSteve Wise laddr6 = (struct sockaddr_in6 *)&ep->com.local_addr; 3300170003c8SSteve Wise raddr6 = (struct sockaddr_in6 *) &ep->com.remote_addr; 33019eccfe10SSteve Wise 3302170003c8SSteve Wise if (cm_id->m_remote_addr.ss_family == AF_INET) { 3303830662f6SVipul Pandya iptype = 4; 3304830662f6SVipul Pandya ra = (__u8 *)&raddr->sin_addr; 3305830662f6SVipul Pandya 3306830662f6SVipul Pandya /* 3307830662f6SVipul Pandya * Handle loopback requests to INADDR_ANY. 3308830662f6SVipul Pandya */ 3309ba987e51SBart Van Assche if (raddr->sin_addr.s_addr == htonl(INADDR_ANY)) { 3310830662f6SVipul Pandya err = pick_local_ipaddrs(dev, cm_id); 3311830662f6SVipul Pandya if (err) 33124a740838SHariprasad S goto fail2; 3313830662f6SVipul Pandya } 3314cfdda9d7SSteve Wise 3315cfdda9d7SSteve Wise /* find a route */ 3316830662f6SVipul Pandya PDBG("%s saddr %pI4 sport 0x%x raddr %pI4 rport 0x%x\n", 3317830662f6SVipul Pandya __func__, &laddr->sin_addr, ntohs(laddr->sin_port), 3318830662f6SVipul Pandya ra, ntohs(raddr->sin_port)); 3319804c2f3eSVarun Prakash ep->dst = cxgb_find_route(&dev->rdev.lldi, get_real_dev, 3320804c2f3eSVarun Prakash laddr->sin_addr.s_addr, 3321804c2f3eSVarun Prakash raddr->sin_addr.s_addr, 3322804c2f3eSVarun Prakash laddr->sin_port, 3323ac8e4c69SHariprasad S raddr->sin_port, cm_id->tos); 3324830662f6SVipul Pandya } else { 3325830662f6SVipul Pandya iptype = 6; 3326830662f6SVipul Pandya ra = (__u8 *)&raddr6->sin6_addr; 3327830662f6SVipul Pandya 3328830662f6SVipul Pandya /* 3329830662f6SVipul Pandya * Handle loopback requests to INADDR_ANY. 3330830662f6SVipul Pandya */ 3331830662f6SVipul Pandya if (ipv6_addr_type(&raddr6->sin6_addr) == IPV6_ADDR_ANY) { 3332830662f6SVipul Pandya err = pick_local_ip6addrs(dev, cm_id); 3333830662f6SVipul Pandya if (err) 33344a740838SHariprasad S goto fail2; 3335830662f6SVipul Pandya } 3336830662f6SVipul Pandya 3337830662f6SVipul Pandya /* find a route */ 3338830662f6SVipul Pandya PDBG("%s saddr %pI6 sport 0x%x raddr %pI6 rport 0x%x\n", 3339830662f6SVipul Pandya __func__, laddr6->sin6_addr.s6_addr, 3340830662f6SVipul Pandya ntohs(laddr6->sin6_port), 3341830662f6SVipul Pandya raddr6->sin6_addr.s6_addr, ntohs(raddr6->sin6_port)); 3342830662f6SVipul Pandya ep->dst = find_route6(dev, laddr6->sin6_addr.s6_addr, 3343830662f6SVipul Pandya raddr6->sin6_addr.s6_addr, 3344830662f6SVipul Pandya laddr6->sin6_port, raddr6->sin6_port, 0, 3345830662f6SVipul Pandya raddr6->sin6_scope_id); 3346830662f6SVipul Pandya } 3347830662f6SVipul Pandya if (!ep->dst) { 3348cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - cannot find route.\n", __func__); 3349cfdda9d7SSteve Wise err = -EHOSTUNREACH; 33504a740838SHariprasad S goto fail3; 3351cfdda9d7SSteve Wise } 3352cfdda9d7SSteve Wise 3353963cab50SHariprasad S err = import_ep(ep, iptype, ra, ep->dst, ep->com.dev, true, 3354ac8e4c69SHariprasad S ep->com.dev->rdev.lldi.adapter_type, cm_id->tos); 33553786cf18SDavid Miller if (err) { 3356cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__); 33574a740838SHariprasad S goto fail4; 3358cfdda9d7SSteve Wise } 3359cfdda9d7SSteve Wise 3360cfdda9d7SSteve Wise PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n", 3361cfdda9d7SSteve Wise __func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid, 3362cfdda9d7SSteve Wise ep->l2t->idx); 3363cfdda9d7SSteve Wise 3364cfdda9d7SSteve Wise state_set(&ep->com, CONNECTING); 3365ac8e4c69SHariprasad S ep->tos = cm_id->tos; 3366cfdda9d7SSteve Wise 3367cfdda9d7SSteve Wise /* send connect request to rnic */ 3368cfdda9d7SSteve Wise err = send_connect(ep); 3369cfdda9d7SSteve Wise if (!err) 3370cfdda9d7SSteve Wise goto out; 3371cfdda9d7SSteve Wise 3372cfdda9d7SSteve Wise cxgb4_l2t_release(ep->l2t); 33734a740838SHariprasad S fail4: 33749eccfe10SSteve Wise dst_release(ep->dst); 33754a740838SHariprasad S fail3: 3376793dad94SVipul Pandya remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid); 3377cfdda9d7SSteve Wise cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid); 33784a740838SHariprasad S fail2: 33794a740838SHariprasad S skb_queue_purge(&ep->com.ep_skb_list); 33809ca6f7cfSHariprasad S deref_cm_id(&ep->com); 33814a740838SHariprasad S fail1: 3382cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 3383cfdda9d7SSteve Wise out: 3384cfdda9d7SSteve Wise return err; 3385cfdda9d7SSteve Wise } 3386cfdda9d7SSteve Wise 3387830662f6SVipul Pandya static int create_server6(struct c4iw_dev *dev, struct c4iw_listen_ep *ep) 3388830662f6SVipul Pandya { 3389830662f6SVipul Pandya int err; 33909eccfe10SSteve Wise struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) 3391170003c8SSteve Wise &ep->com.local_addr; 3392830662f6SVipul Pandya 339328de1f74SHariprasad S if (ipv6_addr_type(&sin6->sin6_addr) != IPV6_ADDR_ANY) { 339428de1f74SHariprasad S err = cxgb4_clip_get(ep->com.dev->rdev.lldi.ports[0], 339528de1f74SHariprasad S (const u32 *)&sin6->sin6_addr.s6_addr, 1); 339628de1f74SHariprasad S if (err) 339728de1f74SHariprasad S return err; 339828de1f74SHariprasad S } 3399830662f6SVipul Pandya c4iw_init_wr_wait(&ep->com.wr_wait); 3400830662f6SVipul Pandya err = cxgb4_create_server6(ep->com.dev->rdev.lldi.ports[0], 3401830662f6SVipul Pandya ep->stid, &sin6->sin6_addr, 3402830662f6SVipul Pandya sin6->sin6_port, 3403830662f6SVipul Pandya ep->com.dev->rdev.lldi.rxq_ids[0]); 3404830662f6SVipul Pandya if (!err) 3405830662f6SVipul Pandya err = c4iw_wait_for_reply(&ep->com.dev->rdev, 3406830662f6SVipul Pandya &ep->com.wr_wait, 3407830662f6SVipul Pandya 0, 0, __func__); 3408e6b11163SHariprasad S else if (err > 0) 3409e6b11163SHariprasad S err = net_xmit_errno(err); 341028de1f74SHariprasad S if (err) { 341128de1f74SHariprasad S cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0], 341228de1f74SHariprasad S (const u32 *)&sin6->sin6_addr.s6_addr, 1); 3413830662f6SVipul Pandya pr_err("cxgb4_create_server6/filter failed err %d stid %d laddr %pI6 lport %d\n", 3414830662f6SVipul Pandya err, ep->stid, 3415830662f6SVipul Pandya sin6->sin6_addr.s6_addr, ntohs(sin6->sin6_port)); 341628de1f74SHariprasad S } 3417830662f6SVipul Pandya return err; 3418830662f6SVipul Pandya } 3419830662f6SVipul Pandya 3420830662f6SVipul Pandya static int create_server4(struct c4iw_dev *dev, struct c4iw_listen_ep *ep) 3421830662f6SVipul Pandya { 3422830662f6SVipul Pandya int err; 34239eccfe10SSteve Wise struct sockaddr_in *sin = (struct sockaddr_in *) 3424170003c8SSteve Wise &ep->com.local_addr; 3425830662f6SVipul Pandya 3426830662f6SVipul Pandya if (dev->rdev.lldi.enable_fw_ofld_conn) { 3427830662f6SVipul Pandya do { 3428830662f6SVipul Pandya err = cxgb4_create_server_filter( 3429830662f6SVipul Pandya ep->com.dev->rdev.lldi.ports[0], ep->stid, 3430830662f6SVipul Pandya sin->sin_addr.s_addr, sin->sin_port, 0, 3431830662f6SVipul Pandya ep->com.dev->rdev.lldi.rxq_ids[0], 0, 0); 3432830662f6SVipul Pandya if (err == -EBUSY) { 343399718e59SHariprasad S if (c4iw_fatal_error(&ep->com.dev->rdev)) { 343499718e59SHariprasad S err = -EIO; 343599718e59SHariprasad S break; 343699718e59SHariprasad S } 3437830662f6SVipul Pandya set_current_state(TASK_UNINTERRUPTIBLE); 3438830662f6SVipul Pandya schedule_timeout(usecs_to_jiffies(100)); 3439830662f6SVipul Pandya } 3440830662f6SVipul Pandya } while (err == -EBUSY); 3441830662f6SVipul Pandya } else { 3442830662f6SVipul Pandya c4iw_init_wr_wait(&ep->com.wr_wait); 3443830662f6SVipul Pandya err = cxgb4_create_server(ep->com.dev->rdev.lldi.ports[0], 3444830662f6SVipul Pandya ep->stid, sin->sin_addr.s_addr, sin->sin_port, 3445830662f6SVipul Pandya 0, ep->com.dev->rdev.lldi.rxq_ids[0]); 3446830662f6SVipul Pandya if (!err) 3447830662f6SVipul Pandya err = c4iw_wait_for_reply(&ep->com.dev->rdev, 3448830662f6SVipul Pandya &ep->com.wr_wait, 3449830662f6SVipul Pandya 0, 0, __func__); 3450e6b11163SHariprasad S else if (err > 0) 3451e6b11163SHariprasad S err = net_xmit_errno(err); 3452830662f6SVipul Pandya } 3453830662f6SVipul Pandya if (err) 3454830662f6SVipul Pandya pr_err("cxgb4_create_server/filter failed err %d stid %d laddr %pI4 lport %d\n" 3455830662f6SVipul Pandya , err, ep->stid, 3456830662f6SVipul Pandya &sin->sin_addr, ntohs(sin->sin_port)); 3457830662f6SVipul Pandya return err; 3458830662f6SVipul Pandya } 3459830662f6SVipul Pandya 3460cfdda9d7SSteve Wise int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog) 3461cfdda9d7SSteve Wise { 3462cfdda9d7SSteve Wise int err = 0; 3463cfdda9d7SSteve Wise struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 3464cfdda9d7SSteve Wise struct c4iw_listen_ep *ep; 3465cfdda9d7SSteve Wise 3466cfdda9d7SSteve Wise might_sleep(); 3467cfdda9d7SSteve Wise 3468cfdda9d7SSteve Wise ep = alloc_ep(sizeof(*ep), GFP_KERNEL); 3469cfdda9d7SSteve Wise if (!ep) { 3470cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); 3471cfdda9d7SSteve Wise err = -ENOMEM; 3472cfdda9d7SSteve Wise goto fail1; 3473cfdda9d7SSteve Wise } 34744a740838SHariprasad S skb_queue_head_init(&ep->com.ep_skb_list); 3475cfdda9d7SSteve Wise PDBG("%s ep %p\n", __func__, ep); 3476cfdda9d7SSteve Wise ep->com.cm_id = cm_id; 34779ca6f7cfSHariprasad S ref_cm_id(&ep->com); 3478cfdda9d7SSteve Wise ep->com.dev = dev; 3479cfdda9d7SSteve Wise ep->backlog = backlog; 3480170003c8SSteve Wise memcpy(&ep->com.local_addr, &cm_id->m_local_addr, 348124d44a39SSteve Wise sizeof(ep->com.local_addr)); 3482cfdda9d7SSteve Wise 3483cfdda9d7SSteve Wise /* 3484cfdda9d7SSteve Wise * Allocate a server TID. 3485cfdda9d7SSteve Wise */ 34868c044690SKumar Sanghvi if (dev->rdev.lldi.enable_fw_ofld_conn && 34878c044690SKumar Sanghvi ep->com.local_addr.ss_family == AF_INET) 3488830662f6SVipul Pandya ep->stid = cxgb4_alloc_sftid(dev->rdev.lldi.tids, 3489170003c8SSteve Wise cm_id->m_local_addr.ss_family, ep); 34901cab775cSVipul Pandya else 3491830662f6SVipul Pandya ep->stid = cxgb4_alloc_stid(dev->rdev.lldi.tids, 3492170003c8SSteve Wise cm_id->m_local_addr.ss_family, ep); 34931cab775cSVipul Pandya 3494cfdda9d7SSteve Wise if (ep->stid == -1) { 3495be4c9badSRoland Dreier printk(KERN_ERR MOD "%s - cannot alloc stid.\n", __func__); 3496cfdda9d7SSteve Wise err = -ENOMEM; 3497cfdda9d7SSteve Wise goto fail2; 3498cfdda9d7SSteve Wise } 3499793dad94SVipul Pandya insert_handle(dev, &dev->stid_idr, ep, ep->stid); 35009eccfe10SSteve Wise 3501170003c8SSteve Wise memcpy(&ep->com.local_addr, &cm_id->m_local_addr, 35029eccfe10SSteve Wise sizeof(ep->com.local_addr)); 35039eccfe10SSteve Wise 3504cfdda9d7SSteve Wise state_set(&ep->com, LISTEN); 3505830662f6SVipul Pandya if (ep->com.local_addr.ss_family == AF_INET) 3506830662f6SVipul Pandya err = create_server4(dev, ep); 3507830662f6SVipul Pandya else 3508830662f6SVipul Pandya err = create_server6(dev, ep); 3509cfdda9d7SSteve Wise if (!err) { 3510cfdda9d7SSteve Wise cm_id->provider_data = ep; 3511cfdda9d7SSteve Wise goto out; 3512cfdda9d7SSteve Wise } 35139eccfe10SSteve Wise 3514830662f6SVipul Pandya cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid, 3515830662f6SVipul Pandya ep->com.local_addr.ss_family); 3516cfdda9d7SSteve Wise fail2: 35179ca6f7cfSHariprasad S deref_cm_id(&ep->com); 3518cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 3519cfdda9d7SSteve Wise fail1: 3520cfdda9d7SSteve Wise out: 3521cfdda9d7SSteve Wise return err; 3522cfdda9d7SSteve Wise } 3523cfdda9d7SSteve Wise 3524cfdda9d7SSteve Wise int c4iw_destroy_listen(struct iw_cm_id *cm_id) 3525cfdda9d7SSteve Wise { 3526cfdda9d7SSteve Wise int err; 3527cfdda9d7SSteve Wise struct c4iw_listen_ep *ep = to_listen_ep(cm_id); 3528cfdda9d7SSteve Wise 3529cfdda9d7SSteve Wise PDBG("%s ep %p\n", __func__, ep); 3530cfdda9d7SSteve Wise 3531cfdda9d7SSteve Wise might_sleep(); 3532cfdda9d7SSteve Wise state_set(&ep->com, DEAD); 3533830662f6SVipul Pandya if (ep->com.dev->rdev.lldi.enable_fw_ofld_conn && 3534830662f6SVipul Pandya ep->com.local_addr.ss_family == AF_INET) { 35351cab775cSVipul Pandya err = cxgb4_remove_server_filter( 35361cab775cSVipul Pandya ep->com.dev->rdev.lldi.ports[0], ep->stid, 35371cab775cSVipul Pandya ep->com.dev->rdev.lldi.rxq_ids[0], 0); 35381cab775cSVipul Pandya } else { 353984cc6ac6SHariprasad S struct sockaddr_in6 *sin6; 3540aadc4df3SSteve Wise c4iw_init_wr_wait(&ep->com.wr_wait); 3541830662f6SVipul Pandya err = cxgb4_remove_server( 3542830662f6SVipul Pandya ep->com.dev->rdev.lldi.ports[0], ep->stid, 3543830662f6SVipul Pandya ep->com.dev->rdev.lldi.rxq_ids[0], 0); 3544cfdda9d7SSteve Wise if (err) 3545cfdda9d7SSteve Wise goto done; 35461cab775cSVipul Pandya err = c4iw_wait_for_reply(&ep->com.dev->rdev, &ep->com.wr_wait, 35471cab775cSVipul Pandya 0, 0, __func__); 3548170003c8SSteve Wise sin6 = (struct sockaddr_in6 *)&ep->com.local_addr; 354984cc6ac6SHariprasad S cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0], 355084cc6ac6SHariprasad S (const u32 *)&sin6->sin6_addr.s6_addr, 1); 35511cab775cSVipul Pandya } 3552793dad94SVipul Pandya remove_handle(ep->com.dev, &ep->com.dev->stid_idr, ep->stid); 3553830662f6SVipul Pandya cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid, 3554830662f6SVipul Pandya ep->com.local_addr.ss_family); 3555cfdda9d7SSteve Wise done: 35569ca6f7cfSHariprasad S deref_cm_id(&ep->com); 3557cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 3558cfdda9d7SSteve Wise return err; 3559cfdda9d7SSteve Wise } 3560cfdda9d7SSteve Wise 3561cfdda9d7SSteve Wise int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) 3562cfdda9d7SSteve Wise { 3563cfdda9d7SSteve Wise int ret = 0; 3564cfdda9d7SSteve Wise int close = 0; 3565cfdda9d7SSteve Wise int fatal = 0; 3566cfdda9d7SSteve Wise struct c4iw_rdev *rdev; 3567cfdda9d7SSteve Wise 35682f5b48c3SSteve Wise mutex_lock(&ep->com.mutex); 3569cfdda9d7SSteve Wise 3570cfdda9d7SSteve Wise PDBG("%s ep %p state %s, abrupt %d\n", __func__, ep, 3571cfdda9d7SSteve Wise states[ep->com.state], abrupt); 3572cfdda9d7SSteve Wise 35736e410d8fSHariprasad S /* 35746e410d8fSHariprasad S * Ref the ep here in case we have fatal errors causing the 35756e410d8fSHariprasad S * ep to be released and freed. 35766e410d8fSHariprasad S */ 35776e410d8fSHariprasad S c4iw_get_ep(&ep->com); 35786e410d8fSHariprasad S 3579cfdda9d7SSteve Wise rdev = &ep->com.dev->rdev; 3580cfdda9d7SSteve Wise if (c4iw_fatal_error(rdev)) { 3581cfdda9d7SSteve Wise fatal = 1; 3582be13b2dfSSteve Wise close_complete_upcall(ep, -EIO); 3583cfdda9d7SSteve Wise ep->com.state = DEAD; 3584cfdda9d7SSteve Wise } 3585cfdda9d7SSteve Wise switch (ep->com.state) { 3586cfdda9d7SSteve Wise case MPA_REQ_WAIT: 3587cfdda9d7SSteve Wise case MPA_REQ_SENT: 3588cfdda9d7SSteve Wise case MPA_REQ_RCVD: 3589cfdda9d7SSteve Wise case MPA_REP_SENT: 3590cfdda9d7SSteve Wise case FPDU_MODE: 35914a740838SHariprasad S case CONNECTING: 3592cfdda9d7SSteve Wise close = 1; 3593cfdda9d7SSteve Wise if (abrupt) 3594cfdda9d7SSteve Wise ep->com.state = ABORTING; 3595cfdda9d7SSteve Wise else { 3596cfdda9d7SSteve Wise ep->com.state = CLOSING; 359712eb5137SSteve Wise 359812eb5137SSteve Wise /* 359912eb5137SSteve Wise * if we close before we see the fw4_ack() then we fix 360012eb5137SSteve Wise * up the timer state since we're reusing it. 360112eb5137SSteve Wise */ 360212eb5137SSteve Wise if (ep->mpa_skb && 360312eb5137SSteve Wise test_bit(STOP_MPA_TIMER, &ep->com.flags)) { 360412eb5137SSteve Wise clear_bit(STOP_MPA_TIMER, &ep->com.flags); 360512eb5137SSteve Wise stop_ep_timer(ep); 360612eb5137SSteve Wise } 3607ca5a2202SSteve Wise start_ep_timer(ep); 3608cfdda9d7SSteve Wise } 3609cfdda9d7SSteve Wise set_bit(CLOSE_SENT, &ep->com.flags); 3610cfdda9d7SSteve Wise break; 3611cfdda9d7SSteve Wise case CLOSING: 3612cfdda9d7SSteve Wise if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) { 3613cfdda9d7SSteve Wise close = 1; 3614cfdda9d7SSteve Wise if (abrupt) { 3615b33bd0cbSSteve Wise (void)stop_ep_timer(ep); 3616cfdda9d7SSteve Wise ep->com.state = ABORTING; 3617cfdda9d7SSteve Wise } else 3618cfdda9d7SSteve Wise ep->com.state = MORIBUND; 3619cfdda9d7SSteve Wise } 3620cfdda9d7SSteve Wise break; 3621cfdda9d7SSteve Wise case MORIBUND: 3622cfdda9d7SSteve Wise case ABORTING: 3623cfdda9d7SSteve Wise case DEAD: 3624cfdda9d7SSteve Wise PDBG("%s ignoring disconnect ep %p state %u\n", 3625cfdda9d7SSteve Wise __func__, ep, ep->com.state); 3626cfdda9d7SSteve Wise break; 3627cfdda9d7SSteve Wise default: 3628cfdda9d7SSteve Wise BUG(); 3629cfdda9d7SSteve Wise break; 3630cfdda9d7SSteve Wise } 3631cfdda9d7SSteve Wise 3632cfdda9d7SSteve Wise if (close) { 36338da7e7a5SSteve Wise if (abrupt) { 3634793dad94SVipul Pandya set_bit(EP_DISC_ABORT, &ep->com.history); 3635be13b2dfSSteve Wise close_complete_upcall(ep, -ECONNRESET); 36364a740838SHariprasad S ret = send_abort(ep); 3637793dad94SVipul Pandya } else { 3638793dad94SVipul Pandya set_bit(EP_DISC_CLOSE, &ep->com.history); 36394a740838SHariprasad S ret = send_halfclose(ep); 3640793dad94SVipul Pandya } 364188bc230dSHariprasad S if (ret) { 36429ca6f7cfSHariprasad S set_bit(EP_DISC_FAIL, &ep->com.history); 364388bc230dSHariprasad S if (!abrupt) { 364488bc230dSHariprasad S stop_ep_timer(ep); 364588bc230dSHariprasad S close_complete_upcall(ep, -EIO); 364688bc230dSHariprasad S } 3647c00dcbafSHariprasad S if (ep->com.qp) { 3648c00dcbafSHariprasad S struct c4iw_qp_attributes attrs; 3649c00dcbafSHariprasad S 3650c00dcbafSHariprasad S attrs.next_state = C4IW_QP_STATE_ERROR; 3651c00dcbafSHariprasad S ret = c4iw_modify_qp(ep->com.qp->rhp, 3652c00dcbafSHariprasad S ep->com.qp, 3653c00dcbafSHariprasad S C4IW_QP_ATTR_NEXT_STATE, 3654c00dcbafSHariprasad S &attrs, 1); 3655c00dcbafSHariprasad S if (ret) 3656c00dcbafSHariprasad S pr_err(MOD 3657c00dcbafSHariprasad S "%s - qp <- error failed!\n", 3658c00dcbafSHariprasad S __func__); 3659c00dcbafSHariprasad S } 3660cfdda9d7SSteve Wise fatal = 1; 3661cfdda9d7SSteve Wise } 366288bc230dSHariprasad S } 36638da7e7a5SSteve Wise mutex_unlock(&ep->com.mutex); 36646e410d8fSHariprasad S c4iw_put_ep(&ep->com); 3665cfdda9d7SSteve Wise if (fatal) 3666cfdda9d7SSteve Wise release_ep_resources(ep); 3667cfdda9d7SSteve Wise return ret; 3668cfdda9d7SSteve Wise } 3669cfdda9d7SSteve Wise 36701cab775cSVipul Pandya static void active_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb, 36711cab775cSVipul Pandya struct cpl_fw6_msg_ofld_connection_wr_rpl *req) 36721cab775cSVipul Pandya { 36731cab775cSVipul Pandya struct c4iw_ep *ep; 3674793dad94SVipul Pandya int atid = be32_to_cpu(req->tid); 36751cab775cSVipul Pandya 3676ef5d6355SVipul Pandya ep = (struct c4iw_ep *)lookup_atid(dev->rdev.lldi.tids, 3677ef5d6355SVipul Pandya (__force u32) req->tid); 36781cab775cSVipul Pandya if (!ep) 36791cab775cSVipul Pandya return; 36801cab775cSVipul Pandya 36811cab775cSVipul Pandya switch (req->retval) { 36821cab775cSVipul Pandya case FW_ENOMEM: 3683793dad94SVipul Pandya set_bit(ACT_RETRY_NOMEM, &ep->com.history); 3684793dad94SVipul Pandya if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) { 3685793dad94SVipul Pandya send_fw_act_open_req(ep, atid); 3686793dad94SVipul Pandya return; 3687793dad94SVipul Pandya } 36881cab775cSVipul Pandya case FW_EADDRINUSE: 3689793dad94SVipul Pandya set_bit(ACT_RETRY_INUSE, &ep->com.history); 3690793dad94SVipul Pandya if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) { 3691793dad94SVipul Pandya send_fw_act_open_req(ep, atid); 3692793dad94SVipul Pandya return; 3693793dad94SVipul Pandya } 36941cab775cSVipul Pandya break; 36951cab775cSVipul Pandya default: 36961cab775cSVipul Pandya pr_info("%s unexpected ofld conn wr retval %d\n", 36971cab775cSVipul Pandya __func__, req->retval); 36981cab775cSVipul Pandya break; 36991cab775cSVipul Pandya } 3700793dad94SVipul Pandya pr_err("active ofld_connect_wr failure %d atid %d\n", 3701793dad94SVipul Pandya req->retval, atid); 3702793dad94SVipul Pandya mutex_lock(&dev->rdev.stats.lock); 3703793dad94SVipul Pandya dev->rdev.stats.act_ofld_conn_fails++; 3704793dad94SVipul Pandya mutex_unlock(&dev->rdev.stats.lock); 37051cab775cSVipul Pandya connect_reply_upcall(ep, status2errno(req->retval)); 3706793dad94SVipul Pandya state_set(&ep->com, DEAD); 370784cc6ac6SHariprasad S if (ep->com.remote_addr.ss_family == AF_INET6) { 370884cc6ac6SHariprasad S struct sockaddr_in6 *sin6 = 3709170003c8SSteve Wise (struct sockaddr_in6 *)&ep->com.local_addr; 371084cc6ac6SHariprasad S cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0], 371184cc6ac6SHariprasad S (const u32 *)&sin6->sin6_addr.s6_addr, 1); 371284cc6ac6SHariprasad S } 3713793dad94SVipul Pandya remove_handle(dev, &dev->atid_idr, atid); 3714793dad94SVipul Pandya cxgb4_free_atid(dev->rdev.lldi.tids, atid); 3715793dad94SVipul Pandya dst_release(ep->dst); 3716793dad94SVipul Pandya cxgb4_l2t_release(ep->l2t); 3717793dad94SVipul Pandya c4iw_put_ep(&ep->com); 37181cab775cSVipul Pandya } 37191cab775cSVipul Pandya 37201cab775cSVipul Pandya static void passive_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb, 37211cab775cSVipul Pandya struct cpl_fw6_msg_ofld_connection_wr_rpl *req) 37221cab775cSVipul Pandya { 37231cab775cSVipul Pandya struct sk_buff *rpl_skb; 37241cab775cSVipul Pandya struct cpl_pass_accept_req *cpl; 37251cab775cSVipul Pandya int ret; 37261cab775cSVipul Pandya 3727710a3110SPaul Bolle rpl_skb = (struct sk_buff *)(unsigned long)req->cookie; 37281cab775cSVipul Pandya BUG_ON(!rpl_skb); 37291cab775cSVipul Pandya if (req->retval) { 37301cab775cSVipul Pandya PDBG("%s passive open failure %d\n", __func__, req->retval); 3731793dad94SVipul Pandya mutex_lock(&dev->rdev.stats.lock); 3732793dad94SVipul Pandya dev->rdev.stats.pas_ofld_conn_fails++; 3733793dad94SVipul Pandya mutex_unlock(&dev->rdev.stats.lock); 37341cab775cSVipul Pandya kfree_skb(rpl_skb); 37351cab775cSVipul Pandya } else { 37361cab775cSVipul Pandya cpl = (struct cpl_pass_accept_req *)cplhdr(rpl_skb); 37371cab775cSVipul Pandya OPCODE_TID(cpl) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ, 3738ef5d6355SVipul Pandya (__force u32) htonl( 3739ef5d6355SVipul Pandya (__force u32) req->tid))); 37401cab775cSVipul Pandya ret = pass_accept_req(dev, rpl_skb); 37411cab775cSVipul Pandya if (!ret) 37421cab775cSVipul Pandya kfree_skb(rpl_skb); 37431cab775cSVipul Pandya } 37441cab775cSVipul Pandya return; 37451cab775cSVipul Pandya } 37461cab775cSVipul Pandya 37471cab775cSVipul Pandya static int deferred_fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb) 37482f5b48c3SSteve Wise { 37492f5b48c3SSteve Wise struct cpl_fw6_msg *rpl = cplhdr(skb); 37501cab775cSVipul Pandya struct cpl_fw6_msg_ofld_connection_wr_rpl *req; 37511cab775cSVipul Pandya 37521cab775cSVipul Pandya switch (rpl->type) { 37531cab775cSVipul Pandya case FW6_TYPE_CQE: 37542f5b48c3SSteve Wise c4iw_ev_dispatch(dev, (struct t4_cqe *)&rpl->data[0]); 37551cab775cSVipul Pandya break; 37561cab775cSVipul Pandya case FW6_TYPE_OFLD_CONNECTION_WR_RPL: 37571cab775cSVipul Pandya req = (struct cpl_fw6_msg_ofld_connection_wr_rpl *)rpl->data; 37581cab775cSVipul Pandya switch (req->t_state) { 37591cab775cSVipul Pandya case TCP_SYN_SENT: 37601cab775cSVipul Pandya active_ofld_conn_reply(dev, skb, req); 37611cab775cSVipul Pandya break; 37621cab775cSVipul Pandya case TCP_SYN_RECV: 37631cab775cSVipul Pandya passive_ofld_conn_reply(dev, skb, req); 37641cab775cSVipul Pandya break; 37651cab775cSVipul Pandya default: 37661cab775cSVipul Pandya pr_err("%s unexpected ofld conn wr state %d\n", 37671cab775cSVipul Pandya __func__, req->t_state); 37681cab775cSVipul Pandya break; 37691cab775cSVipul Pandya } 37701cab775cSVipul Pandya break; 37711cab775cSVipul Pandya } 37721cab775cSVipul Pandya return 0; 37731cab775cSVipul Pandya } 37741cab775cSVipul Pandya 37751cab775cSVipul Pandya static void build_cpl_pass_accept_req(struct sk_buff *skb, int stid , u8 tos) 37761cab775cSVipul Pandya { 3777963cab50SHariprasad S __be32 l2info; 3778963cab50SHariprasad S __be16 hdr_len, vlantag, len; 3779963cab50SHariprasad S u16 eth_hdr_len; 3780963cab50SHariprasad S int tcp_hdr_len, ip_hdr_len; 37811cab775cSVipul Pandya u8 intf; 37821cab775cSVipul Pandya struct cpl_rx_pkt *cpl = cplhdr(skb); 37831cab775cSVipul Pandya struct cpl_pass_accept_req *req; 37841cab775cSVipul Pandya struct tcp_options_received tmp_opt; 3785f079af7aSVipul Pandya struct c4iw_dev *dev; 3786963cab50SHariprasad S enum chip_type type; 37871cab775cSVipul Pandya 3788f079af7aSVipul Pandya dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *))); 37891cab775cSVipul Pandya /* Store values from cpl_rx_pkt in temporary location. */ 3790963cab50SHariprasad S vlantag = cpl->vlan; 3791963cab50SHariprasad S len = cpl->len; 3792963cab50SHariprasad S l2info = cpl->l2info; 3793963cab50SHariprasad S hdr_len = cpl->hdr_len; 37941cab775cSVipul Pandya intf = cpl->iff; 37951cab775cSVipul Pandya 37961cab775cSVipul Pandya __skb_pull(skb, sizeof(*req) + sizeof(struct rss_header)); 37971cab775cSVipul Pandya 37981cab775cSVipul Pandya /* 37991cab775cSVipul Pandya * We need to parse the TCP options from SYN packet. 38001cab775cSVipul Pandya * to generate cpl_pass_accept_req. 38011cab775cSVipul Pandya */ 38021cab775cSVipul Pandya memset(&tmp_opt, 0, sizeof(tmp_opt)); 38031cab775cSVipul Pandya tcp_clear_options(&tmp_opt); 38041a2c6181SChristoph Paasch tcp_parse_options(skb, &tmp_opt, 0, NULL); 38051cab775cSVipul Pandya 38061cab775cSVipul Pandya req = (struct cpl_pass_accept_req *)__skb_push(skb, sizeof(*req)); 38071cab775cSVipul Pandya memset(req, 0, sizeof(*req)); 3808cf7fe64aSHariprasad Shenai req->l2info = cpu_to_be16(SYN_INTF_V(intf) | 3809cf7fe64aSHariprasad Shenai SYN_MAC_IDX_V(RX_MACIDX_G( 3810963cab50SHariprasad S be32_to_cpu(l2info))) | 3811cf7fe64aSHariprasad Shenai SYN_XACT_MATCH_F); 3812963cab50SHariprasad S type = dev->rdev.lldi.adapter_type; 3813963cab50SHariprasad S tcp_hdr_len = RX_TCPHDR_LEN_G(be16_to_cpu(hdr_len)); 3814963cab50SHariprasad S ip_hdr_len = RX_IPHDR_LEN_G(be16_to_cpu(hdr_len)); 3815963cab50SHariprasad S req->hdr_len = 3816963cab50SHariprasad S cpu_to_be32(SYN_RX_CHAN_V(RX_CHAN_G(be32_to_cpu(l2info)))); 3817963cab50SHariprasad S if (CHELSIO_CHIP_VERSION(type) <= CHELSIO_T5) { 3818963cab50SHariprasad S eth_hdr_len = is_t4(type) ? 3819963cab50SHariprasad S RX_ETHHDR_LEN_G(be32_to_cpu(l2info)) : 3820963cab50SHariprasad S RX_T5_ETHHDR_LEN_G(be32_to_cpu(l2info)); 3821963cab50SHariprasad S req->hdr_len |= cpu_to_be32(TCP_HDR_LEN_V(tcp_hdr_len) | 3822963cab50SHariprasad S IP_HDR_LEN_V(ip_hdr_len) | 3823963cab50SHariprasad S ETH_HDR_LEN_V(eth_hdr_len)); 3824963cab50SHariprasad S } else { /* T6 and later */ 3825963cab50SHariprasad S eth_hdr_len = RX_T6_ETHHDR_LEN_G(be32_to_cpu(l2info)); 3826963cab50SHariprasad S req->hdr_len |= cpu_to_be32(T6_TCP_HDR_LEN_V(tcp_hdr_len) | 3827963cab50SHariprasad S T6_IP_HDR_LEN_V(ip_hdr_len) | 3828963cab50SHariprasad S T6_ETH_HDR_LEN_V(eth_hdr_len)); 3829963cab50SHariprasad S } 3830963cab50SHariprasad S req->vlan = vlantag; 3831963cab50SHariprasad S req->len = len; 38326c53e938SHariprasad Shenai req->tos_stid = cpu_to_be32(PASS_OPEN_TID_V(stid) | 38336c53e938SHariprasad Shenai PASS_OPEN_TOS_V(tos)); 38341cab775cSVipul Pandya req->tcpopt.mss = htons(tmp_opt.mss_clamp); 38351cab775cSVipul Pandya if (tmp_opt.wscale_ok) 38361cab775cSVipul Pandya req->tcpopt.wsf = tmp_opt.snd_wscale; 38371cab775cSVipul Pandya req->tcpopt.tstamp = tmp_opt.saw_tstamp; 38381cab775cSVipul Pandya if (tmp_opt.sack_ok) 38391cab775cSVipul Pandya req->tcpopt.sack = 1; 38401cab775cSVipul Pandya OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ, 0)); 38411cab775cSVipul Pandya return; 38421cab775cSVipul Pandya } 38431cab775cSVipul Pandya 38441cab775cSVipul Pandya static void send_fw_pass_open_req(struct c4iw_dev *dev, struct sk_buff *skb, 38451cab775cSVipul Pandya __be32 laddr, __be16 lport, 38461cab775cSVipul Pandya __be32 raddr, __be16 rport, 38471cab775cSVipul Pandya u32 rcv_isn, u32 filter, u16 window, 38481cab775cSVipul Pandya u32 rss_qid, u8 port_id) 38491cab775cSVipul Pandya { 38501cab775cSVipul Pandya struct sk_buff *req_skb; 38511cab775cSVipul Pandya struct fw_ofld_connection_wr *req; 38521cab775cSVipul Pandya struct cpl_pass_accept_req *cpl = cplhdr(skb); 38531ce1d471SSteve Wise int ret; 38541cab775cSVipul Pandya 38551cab775cSVipul Pandya req_skb = alloc_skb(sizeof(struct fw_ofld_connection_wr), GFP_KERNEL); 38561cab775cSVipul Pandya req = (struct fw_ofld_connection_wr *)__skb_put(req_skb, sizeof(*req)); 38571cab775cSVipul Pandya memset(req, 0, sizeof(*req)); 38586c53e938SHariprasad Shenai req->op_compl = htonl(WR_OP_V(FW_OFLD_CONNECTION_WR) | FW_WR_COMPL_F); 3859e2ac9628SHariprasad Shenai req->len16_pkd = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*req), 16))); 386077a80e23SHariprasad Shenai req->le.version_cpl = htonl(FW_OFLD_CONNECTION_WR_CPL_F); 3861ef5d6355SVipul Pandya req->le.filter = (__force __be32) filter; 38621cab775cSVipul Pandya req->le.lport = lport; 38631cab775cSVipul Pandya req->le.pport = rport; 38641cab775cSVipul Pandya req->le.u.ipv4.lip = laddr; 38651cab775cSVipul Pandya req->le.u.ipv4.pip = raddr; 38661cab775cSVipul Pandya req->tcb.rcv_nxt = htonl(rcv_isn + 1); 38671cab775cSVipul Pandya req->tcb.rcv_adv = htons(window); 38681cab775cSVipul Pandya req->tcb.t_state_to_astid = 386977a80e23SHariprasad Shenai htonl(FW_OFLD_CONNECTION_WR_T_STATE_V(TCP_SYN_RECV) | 387077a80e23SHariprasad Shenai FW_OFLD_CONNECTION_WR_RCV_SCALE_V(cpl->tcpopt.wsf) | 387177a80e23SHariprasad Shenai FW_OFLD_CONNECTION_WR_ASTID_V( 38726c53e938SHariprasad Shenai PASS_OPEN_TID_G(ntohl(cpl->tos_stid)))); 38731cab775cSVipul Pandya 38741cab775cSVipul Pandya /* 38751cab775cSVipul Pandya * We store the qid in opt2 which will be used by the firmware 38761cab775cSVipul Pandya * to send us the wr response. 38771cab775cSVipul Pandya */ 3878d7990b0cSAnish Bhatt req->tcb.opt2 = htonl(RSS_QUEUE_V(rss_qid)); 38791cab775cSVipul Pandya 38801cab775cSVipul Pandya /* 38811cab775cSVipul Pandya * We initialize the MSS index in TCB to 0xF. 38821cab775cSVipul Pandya * So that when driver sends cpl_pass_accept_rpl 38831cab775cSVipul Pandya * TCB picks up the correct value. If this was 0 38841cab775cSVipul Pandya * TP will ignore any value > 0 for MSS index. 38851cab775cSVipul Pandya */ 3886d7990b0cSAnish Bhatt req->tcb.opt0 = cpu_to_be64(MSS_IDX_V(0xF)); 38876198dd8dSHariprasad S req->cookie = (uintptr_t)skb; 38881cab775cSVipul Pandya 38891cab775cSVipul Pandya set_wr_txq(req_skb, CPL_PRIORITY_CONTROL, port_id); 38901ce1d471SSteve Wise ret = cxgb4_ofld_send(dev->rdev.lldi.ports[0], req_skb); 38911ce1d471SSteve Wise if (ret < 0) { 38921ce1d471SSteve Wise pr_err("%s - cxgb4_ofld_send error %d - dropping\n", __func__, 38931ce1d471SSteve Wise ret); 38941ce1d471SSteve Wise kfree_skb(skb); 38951ce1d471SSteve Wise kfree_skb(req_skb); 38961ce1d471SSteve Wise } 38971cab775cSVipul Pandya } 38981cab775cSVipul Pandya 38991cab775cSVipul Pandya /* 39001cab775cSVipul Pandya * Handler for CPL_RX_PKT message. Need to handle cpl_rx_pkt 39011cab775cSVipul Pandya * messages when a filter is being used instead of server to 39021cab775cSVipul Pandya * redirect a syn packet. When packets hit filter they are redirected 39031cab775cSVipul Pandya * to the offload queue and driver tries to establish the connection 39041cab775cSVipul Pandya * using firmware work request. 39051cab775cSVipul Pandya */ 39061cab775cSVipul Pandya static int rx_pkt(struct c4iw_dev *dev, struct sk_buff *skb) 39071cab775cSVipul Pandya { 39081cab775cSVipul Pandya int stid; 39091cab775cSVipul Pandya unsigned int filter; 39101cab775cSVipul Pandya struct ethhdr *eh = NULL; 39111cab775cSVipul Pandya struct vlan_ethhdr *vlan_eh = NULL; 39121cab775cSVipul Pandya struct iphdr *iph; 39131cab775cSVipul Pandya struct tcphdr *tcph; 39141cab775cSVipul Pandya struct rss_header *rss = (void *)skb->data; 39151cab775cSVipul Pandya struct cpl_rx_pkt *cpl = (void *)skb->data; 39161cab775cSVipul Pandya struct cpl_pass_accept_req *req = (void *)(rss + 1); 39171cab775cSVipul Pandya struct l2t_entry *e; 39181cab775cSVipul Pandya struct dst_entry *dst; 3919f86fac79SHariprasad S struct c4iw_ep *lep = NULL; 39201cab775cSVipul Pandya u16 window; 39211cab775cSVipul Pandya struct port_info *pi; 39221cab775cSVipul Pandya struct net_device *pdev; 3923f079af7aSVipul Pandya u16 rss_qid, eth_hdr_len; 39241cab775cSVipul Pandya int step; 39251cab775cSVipul Pandya u32 tx_chan; 39261cab775cSVipul Pandya struct neighbour *neigh; 39271cab775cSVipul Pandya 39281cab775cSVipul Pandya /* Drop all non-SYN packets */ 3929bdc590b9SHariprasad Shenai if (!(cpl->l2info & cpu_to_be32(RXF_SYN_F))) 39301cab775cSVipul Pandya goto reject; 39311cab775cSVipul Pandya 39321cab775cSVipul Pandya /* 39331cab775cSVipul Pandya * Drop all packets which did not hit the filter. 39341cab775cSVipul Pandya * Unlikely to happen. 39351cab775cSVipul Pandya */ 39361cab775cSVipul Pandya if (!(rss->filter_hit && rss->filter_tid)) 39371cab775cSVipul Pandya goto reject; 39381cab775cSVipul Pandya 39391cab775cSVipul Pandya /* 39401cab775cSVipul Pandya * Calculate the server tid from filter hit index from cpl_rx_pkt. 39411cab775cSVipul Pandya */ 3942a4ea025fSKumar Sanghvi stid = (__force int) cpu_to_be32((__force u32) rss->hash_val); 39431cab775cSVipul Pandya 3944f86fac79SHariprasad S lep = (struct c4iw_ep *)get_ep_from_stid(dev, stid); 39451cab775cSVipul Pandya if (!lep) { 39461cab775cSVipul Pandya PDBG("%s connect request on invalid stid %d\n", __func__, stid); 39471cab775cSVipul Pandya goto reject; 39481cab775cSVipul Pandya } 39491cab775cSVipul Pandya 3950963cab50SHariprasad S switch (CHELSIO_CHIP_VERSION(dev->rdev.lldi.adapter_type)) { 3951963cab50SHariprasad S case CHELSIO_T4: 3952963cab50SHariprasad S eth_hdr_len = RX_ETHHDR_LEN_G(be32_to_cpu(cpl->l2info)); 3953963cab50SHariprasad S break; 3954963cab50SHariprasad S case CHELSIO_T5: 3955963cab50SHariprasad S eth_hdr_len = RX_T5_ETHHDR_LEN_G(be32_to_cpu(cpl->l2info)); 3956963cab50SHariprasad S break; 3957963cab50SHariprasad S case CHELSIO_T6: 3958963cab50SHariprasad S eth_hdr_len = RX_T6_ETHHDR_LEN_G(be32_to_cpu(cpl->l2info)); 3959963cab50SHariprasad S break; 3960963cab50SHariprasad S default: 3961963cab50SHariprasad S pr_err("T%d Chip is not supported\n", 3962963cab50SHariprasad S CHELSIO_CHIP_VERSION(dev->rdev.lldi.adapter_type)); 3963963cab50SHariprasad S goto reject; 3964963cab50SHariprasad S } 3965963cab50SHariprasad S 3966f079af7aSVipul Pandya if (eth_hdr_len == ETH_HLEN) { 39671cab775cSVipul Pandya eh = (struct ethhdr *)(req + 1); 39681cab775cSVipul Pandya iph = (struct iphdr *)(eh + 1); 39691cab775cSVipul Pandya } else { 39701cab775cSVipul Pandya vlan_eh = (struct vlan_ethhdr *)(req + 1); 39711cab775cSVipul Pandya iph = (struct iphdr *)(vlan_eh + 1); 39721cab775cSVipul Pandya skb->vlan_tci = ntohs(cpl->vlan); 39731cab775cSVipul Pandya } 39741cab775cSVipul Pandya 39751cab775cSVipul Pandya if (iph->version != 0x4) 39761cab775cSVipul Pandya goto reject; 39771cab775cSVipul Pandya 39781cab775cSVipul Pandya tcph = (struct tcphdr *)(iph + 1); 39791cab775cSVipul Pandya skb_set_network_header(skb, (void *)iph - (void *)rss); 39801cab775cSVipul Pandya skb_set_transport_header(skb, (void *)tcph - (void *)rss); 39811cab775cSVipul Pandya skb_get(skb); 39821cab775cSVipul Pandya 39831cab775cSVipul Pandya PDBG("%s lip 0x%x lport %u pip 0x%x pport %u tos %d\n", __func__, 39841cab775cSVipul Pandya ntohl(iph->daddr), ntohs(tcph->dest), ntohl(iph->saddr), 39851cab775cSVipul Pandya ntohs(tcph->source), iph->tos); 39861cab775cSVipul Pandya 3987804c2f3eSVarun Prakash dst = cxgb_find_route(&dev->rdev.lldi, get_real_dev, 3988804c2f3eSVarun Prakash iph->daddr, iph->saddr, tcph->dest, 3989804c2f3eSVarun Prakash tcph->source, iph->tos); 3990830662f6SVipul Pandya if (!dst) { 39911cab775cSVipul Pandya pr_err("%s - failed to find dst entry!\n", 39921cab775cSVipul Pandya __func__); 39931cab775cSVipul Pandya goto reject; 39941cab775cSVipul Pandya } 39951cab775cSVipul Pandya neigh = dst_neigh_lookup_skb(dst, skb); 39961cab775cSVipul Pandya 3997aaa0c23cSZhouyi Zhou if (!neigh) { 3998aaa0c23cSZhouyi Zhou pr_err("%s - failed to allocate neigh!\n", 3999aaa0c23cSZhouyi Zhou __func__); 4000aaa0c23cSZhouyi Zhou goto free_dst; 4001aaa0c23cSZhouyi Zhou } 4002aaa0c23cSZhouyi Zhou 40031cab775cSVipul Pandya if (neigh->dev->flags & IFF_LOOPBACK) { 40041cab775cSVipul Pandya pdev = ip_dev_find(&init_net, iph->daddr); 40051cab775cSVipul Pandya e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh, 40061cab775cSVipul Pandya pdev, 0); 40071cab775cSVipul Pandya pi = (struct port_info *)netdev_priv(pdev); 40081cab775cSVipul Pandya tx_chan = cxgb4_port_chan(pdev); 40091cab775cSVipul Pandya dev_put(pdev); 40101cab775cSVipul Pandya } else { 4011830662f6SVipul Pandya pdev = get_real_dev(neigh->dev); 40121cab775cSVipul Pandya e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh, 4013830662f6SVipul Pandya pdev, 0); 4014830662f6SVipul Pandya pi = (struct port_info *)netdev_priv(pdev); 4015830662f6SVipul Pandya tx_chan = cxgb4_port_chan(pdev); 40161cab775cSVipul Pandya } 4017ebf00060SSteve Wise neigh_release(neigh); 40181cab775cSVipul Pandya if (!e) { 40191cab775cSVipul Pandya pr_err("%s - failed to allocate l2t entry!\n", 40201cab775cSVipul Pandya __func__); 40211cab775cSVipul Pandya goto free_dst; 40221cab775cSVipul Pandya } 40231cab775cSVipul Pandya 40241cab775cSVipul Pandya step = dev->rdev.lldi.nrxq / dev->rdev.lldi.nchan; 40251cab775cSVipul Pandya rss_qid = dev->rdev.lldi.rxq_ids[pi->port_id * step]; 4026ef5d6355SVipul Pandya window = (__force u16) htons((__force u16)tcph->window); 40271cab775cSVipul Pandya 40281cab775cSVipul Pandya /* Calcuate filter portion for LE region. */ 402941b4f86cSKumar Sanghvi filter = (__force unsigned int) cpu_to_be32(cxgb4_select_ntuple( 403041b4f86cSKumar Sanghvi dev->rdev.lldi.ports[0], 403141b4f86cSKumar Sanghvi e)); 40321cab775cSVipul Pandya 40331cab775cSVipul Pandya /* 40341cab775cSVipul Pandya * Synthesize the cpl_pass_accept_req. We have everything except the 40351cab775cSVipul Pandya * TID. Once firmware sends a reply with TID we update the TID field 40361cab775cSVipul Pandya * in cpl and pass it through the regular cpl_pass_accept_req path. 40371cab775cSVipul Pandya */ 40381cab775cSVipul Pandya build_cpl_pass_accept_req(skb, stid, iph->tos); 40391cab775cSVipul Pandya send_fw_pass_open_req(dev, skb, iph->daddr, tcph->dest, iph->saddr, 40401cab775cSVipul Pandya tcph->source, ntohl(tcph->seq), filter, window, 40411cab775cSVipul Pandya rss_qid, pi->port_id); 40421cab775cSVipul Pandya cxgb4_l2t_release(e); 40431cab775cSVipul Pandya free_dst: 40441cab775cSVipul Pandya dst_release(dst); 40451cab775cSVipul Pandya reject: 4046f86fac79SHariprasad S if (lep) 4047f86fac79SHariprasad S c4iw_put_ep(&lep->com); 40482f5b48c3SSteve Wise return 0; 40492f5b48c3SSteve Wise } 40502f5b48c3SSteve Wise 4051cfdda9d7SSteve Wise /* 4052be4c9badSRoland Dreier * These are the real handlers that are called from a 4053be4c9badSRoland Dreier * work queue. 4054be4c9badSRoland Dreier */ 40559dec900cSHariprasad S static c4iw_handler_func work_handlers[NUM_CPL_CMDS + NUM_FAKE_CPLS] = { 4056be4c9badSRoland Dreier [CPL_ACT_ESTABLISH] = act_establish, 4057be4c9badSRoland Dreier [CPL_ACT_OPEN_RPL] = act_open_rpl, 4058be4c9badSRoland Dreier [CPL_RX_DATA] = rx_data, 4059be4c9badSRoland Dreier [CPL_ABORT_RPL_RSS] = abort_rpl, 4060be4c9badSRoland Dreier [CPL_ABORT_RPL] = abort_rpl, 4061be4c9badSRoland Dreier [CPL_PASS_OPEN_RPL] = pass_open_rpl, 4062be4c9badSRoland Dreier [CPL_CLOSE_LISTSRV_RPL] = close_listsrv_rpl, 4063be4c9badSRoland Dreier [CPL_PASS_ACCEPT_REQ] = pass_accept_req, 4064be4c9badSRoland Dreier [CPL_PASS_ESTABLISH] = pass_establish, 4065be4c9badSRoland Dreier [CPL_PEER_CLOSE] = peer_close, 4066be4c9badSRoland Dreier [CPL_ABORT_REQ_RSS] = peer_abort, 4067be4c9badSRoland Dreier [CPL_CLOSE_CON_RPL] = close_con_rpl, 4068be4c9badSRoland Dreier [CPL_RDMA_TERMINATE] = terminate, 40692f5b48c3SSteve Wise [CPL_FW4_ACK] = fw4_ack, 40701cab775cSVipul Pandya [CPL_FW6_MSG] = deferred_fw6_msg, 40719dec900cSHariprasad S [CPL_RX_PKT] = rx_pkt, 40728d1f1a6bSHariprasad S [FAKE_CPL_PUT_EP_SAFE] = _put_ep_safe, 40738d1f1a6bSHariprasad S [FAKE_CPL_PASS_PUT_EP_SAFE] = _put_pass_ep_safe 4074be4c9badSRoland Dreier }; 4075be4c9badSRoland Dreier 4076be4c9badSRoland Dreier static void process_timeout(struct c4iw_ep *ep) 4077be4c9badSRoland Dreier { 4078be4c9badSRoland Dreier struct c4iw_qp_attributes attrs; 4079be4c9badSRoland Dreier int abort = 1; 4080be4c9badSRoland Dreier 40812f5b48c3SSteve Wise mutex_lock(&ep->com.mutex); 4082be4c9badSRoland Dreier PDBG("%s ep %p tid %u state %d\n", __func__, ep, ep->hwtid, 4083be4c9badSRoland Dreier ep->com.state); 4084793dad94SVipul Pandya set_bit(TIMEDOUT, &ep->com.history); 4085be4c9badSRoland Dreier switch (ep->com.state) { 4086be4c9badSRoland Dreier case MPA_REQ_SENT: 4087be4c9badSRoland Dreier connect_reply_upcall(ep, -ETIMEDOUT); 4088be4c9badSRoland Dreier break; 4089be4c9badSRoland Dreier case MPA_REQ_WAIT: 4090ceb110a8SHariprasad S case MPA_REQ_RCVD: 4091e4b76a2aSHariprasad S case MPA_REP_SENT: 4092ceb110a8SHariprasad S case FPDU_MODE: 4093be4c9badSRoland Dreier break; 4094be4c9badSRoland Dreier case CLOSING: 4095be4c9badSRoland Dreier case MORIBUND: 4096be4c9badSRoland Dreier if (ep->com.cm_id && ep->com.qp) { 4097be4c9badSRoland Dreier attrs.next_state = C4IW_QP_STATE_ERROR; 4098be4c9badSRoland Dreier c4iw_modify_qp(ep->com.qp->rhp, 4099be4c9badSRoland Dreier ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, 4100be4c9badSRoland Dreier &attrs, 1); 4101be4c9badSRoland Dreier } 4102be13b2dfSSteve Wise close_complete_upcall(ep, -ETIMEDOUT); 4103be4c9badSRoland Dreier break; 4104b33bd0cbSSteve Wise case ABORTING: 4105b33bd0cbSSteve Wise case DEAD: 4106b33bd0cbSSteve Wise 4107b33bd0cbSSteve Wise /* 4108b33bd0cbSSteve Wise * These states are expected if the ep timed out at the same 4109b33bd0cbSSteve Wise * time as another thread was calling stop_ep_timer(). 4110b33bd0cbSSteve Wise * So we silently do nothing for these states. 4111b33bd0cbSSteve Wise */ 4112b33bd0cbSSteve Wise abort = 0; 4113b33bd0cbSSteve Wise break; 4114be4c9badSRoland Dreier default: 411576f267b7SJulia Lawall WARN(1, "%s unexpected state ep %p tid %u state %u\n", 4116be4c9badSRoland Dreier __func__, ep, ep->hwtid, ep->com.state); 4117be4c9badSRoland Dreier abort = 0; 4118be4c9badSRoland Dreier } 4119cc18b939SSteve Wise mutex_unlock(&ep->com.mutex); 412069736279SHariprasad S if (abort) 412169736279SHariprasad S c4iw_ep_disconnect(ep, 1, GFP_KERNEL); 4122be4c9badSRoland Dreier c4iw_put_ep(&ep->com); 4123be4c9badSRoland Dreier } 4124be4c9badSRoland Dreier 4125be4c9badSRoland Dreier static void process_timedout_eps(void) 4126be4c9badSRoland Dreier { 4127be4c9badSRoland Dreier struct c4iw_ep *ep; 4128be4c9badSRoland Dreier 4129be4c9badSRoland Dreier spin_lock_irq(&timeout_lock); 4130be4c9badSRoland Dreier while (!list_empty(&timeout_list)) { 4131be4c9badSRoland Dreier struct list_head *tmp; 4132be4c9badSRoland Dreier 4133be4c9badSRoland Dreier tmp = timeout_list.next; 4134be4c9badSRoland Dreier list_del(tmp); 4135b33bd0cbSSteve Wise tmp->next = NULL; 4136b33bd0cbSSteve Wise tmp->prev = NULL; 4137be4c9badSRoland Dreier spin_unlock_irq(&timeout_lock); 4138be4c9badSRoland Dreier ep = list_entry(tmp, struct c4iw_ep, entry); 4139be4c9badSRoland Dreier process_timeout(ep); 4140be4c9badSRoland Dreier spin_lock_irq(&timeout_lock); 4141be4c9badSRoland Dreier } 4142be4c9badSRoland Dreier spin_unlock_irq(&timeout_lock); 4143be4c9badSRoland Dreier } 4144be4c9badSRoland Dreier 4145be4c9badSRoland Dreier static void process_work(struct work_struct *work) 4146be4c9badSRoland Dreier { 4147be4c9badSRoland Dreier struct sk_buff *skb = NULL; 4148be4c9badSRoland Dreier struct c4iw_dev *dev; 4149c1d7356cSDan Carpenter struct cpl_act_establish *rpl; 4150be4c9badSRoland Dreier unsigned int opcode; 4151be4c9badSRoland Dreier int ret; 4152be4c9badSRoland Dreier 4153b33bd0cbSSteve Wise process_timedout_eps(); 4154be4c9badSRoland Dreier while ((skb = skb_dequeue(&rxq))) { 4155be4c9badSRoland Dreier rpl = cplhdr(skb); 4156be4c9badSRoland Dreier dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *))); 4157be4c9badSRoland Dreier opcode = rpl->ot.opcode; 4158be4c9badSRoland Dreier 4159be4c9badSRoland Dreier BUG_ON(!work_handlers[opcode]); 4160be4c9badSRoland Dreier ret = work_handlers[opcode](dev, skb); 4161be4c9badSRoland Dreier if (!ret) 4162be4c9badSRoland Dreier kfree_skb(skb); 4163be4c9badSRoland Dreier process_timedout_eps(); 4164be4c9badSRoland Dreier } 4165b33bd0cbSSteve Wise } 4166be4c9badSRoland Dreier 4167be4c9badSRoland Dreier static DECLARE_WORK(skb_work, process_work); 4168be4c9badSRoland Dreier 4169be4c9badSRoland Dreier static void ep_timeout(unsigned long arg) 4170be4c9badSRoland Dreier { 4171be4c9badSRoland Dreier struct c4iw_ep *ep = (struct c4iw_ep *)arg; 41721ec779ccSVipul Pandya int kickit = 0; 4173be4c9badSRoland Dreier 4174be4c9badSRoland Dreier spin_lock(&timeout_lock); 41751ec779ccSVipul Pandya if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { 4176b33bd0cbSSteve Wise /* 4177b33bd0cbSSteve Wise * Only insert if it is not already on the list. 4178b33bd0cbSSteve Wise */ 4179b33bd0cbSSteve Wise if (!ep->entry.next) { 4180be4c9badSRoland Dreier list_add_tail(&ep->entry, &timeout_list); 41811ec779ccSVipul Pandya kickit = 1; 41821ec779ccSVipul Pandya } 4183b33bd0cbSSteve Wise } 4184be4c9badSRoland Dreier spin_unlock(&timeout_lock); 41851ec779ccSVipul Pandya if (kickit) 4186be4c9badSRoland Dreier queue_work(workq, &skb_work); 4187be4c9badSRoland Dreier } 4188be4c9badSRoland Dreier 4189be4c9badSRoland Dreier /* 4190cfdda9d7SSteve Wise * All the CM events are handled on a work queue to have a safe context. 4191cfdda9d7SSteve Wise */ 4192cfdda9d7SSteve Wise static int sched(struct c4iw_dev *dev, struct sk_buff *skb) 4193cfdda9d7SSteve Wise { 4194cfdda9d7SSteve Wise 4195cfdda9d7SSteve Wise /* 4196cfdda9d7SSteve Wise * Save dev in the skb->cb area. 4197cfdda9d7SSteve Wise */ 4198cfdda9d7SSteve Wise *((struct c4iw_dev **) (skb->cb + sizeof(void *))) = dev; 4199cfdda9d7SSteve Wise 4200cfdda9d7SSteve Wise /* 4201cfdda9d7SSteve Wise * Queue the skb and schedule the worker thread. 4202cfdda9d7SSteve Wise */ 4203cfdda9d7SSteve Wise skb_queue_tail(&rxq, skb); 4204cfdda9d7SSteve Wise queue_work(workq, &skb_work); 4205cfdda9d7SSteve Wise return 0; 4206cfdda9d7SSteve Wise } 4207cfdda9d7SSteve Wise 4208cfdda9d7SSteve Wise static int set_tcb_rpl(struct c4iw_dev *dev, struct sk_buff *skb) 4209cfdda9d7SSteve Wise { 4210cfdda9d7SSteve Wise struct cpl_set_tcb_rpl *rpl = cplhdr(skb); 4211cfdda9d7SSteve Wise 4212cfdda9d7SSteve Wise if (rpl->status != CPL_ERR_NONE) { 4213cfdda9d7SSteve Wise printk(KERN_ERR MOD "Unexpected SET_TCB_RPL status %u " 4214cfdda9d7SSteve Wise "for tid %u\n", rpl->status, GET_TID(rpl)); 4215cfdda9d7SSteve Wise } 42162f5b48c3SSteve Wise kfree_skb(skb); 4217cfdda9d7SSteve Wise return 0; 4218cfdda9d7SSteve Wise } 4219cfdda9d7SSteve Wise 4220be4c9badSRoland Dreier static int fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb) 4221be4c9badSRoland Dreier { 4222be4c9badSRoland Dreier struct cpl_fw6_msg *rpl = cplhdr(skb); 4223be4c9badSRoland Dreier struct c4iw_wr_wait *wr_waitp; 4224be4c9badSRoland Dreier int ret; 4225be4c9badSRoland Dreier 4226be4c9badSRoland Dreier PDBG("%s type %u\n", __func__, rpl->type); 4227be4c9badSRoland Dreier 4228be4c9badSRoland Dreier switch (rpl->type) { 42295be78ee9SVipul Pandya case FW6_TYPE_WR_RPL: 4230be4c9badSRoland Dreier ret = (int)((be64_to_cpu(rpl->data[0]) >> 8) & 0xff); 4231c8e081a1SRoland Dreier wr_waitp = (struct c4iw_wr_wait *)(__force unsigned long) rpl->data[1]; 4232be4c9badSRoland Dreier PDBG("%s wr_waitp %p ret %u\n", __func__, wr_waitp, ret); 4233d9594d99SSteve Wise if (wr_waitp) 4234d9594d99SSteve Wise c4iw_wake_up(wr_waitp, ret ? -ret : 0); 42352f5b48c3SSteve Wise kfree_skb(skb); 4236be4c9badSRoland Dreier break; 42375be78ee9SVipul Pandya case FW6_TYPE_CQE: 42385be78ee9SVipul Pandya case FW6_TYPE_OFLD_CONNECTION_WR_RPL: 42391cab775cSVipul Pandya sched(dev, skb); 42405be78ee9SVipul Pandya break; 4241be4c9badSRoland Dreier default: 4242be4c9badSRoland Dreier printk(KERN_ERR MOD "%s unexpected fw6 msg type %u\n", __func__, 4243be4c9badSRoland Dreier rpl->type); 42442f5b48c3SSteve Wise kfree_skb(skb); 4245be4c9badSRoland Dreier break; 4246be4c9badSRoland Dreier } 4247be4c9badSRoland Dreier return 0; 4248be4c9badSRoland Dreier } 4249be4c9badSRoland Dreier 42508da7e7a5SSteve Wise static int peer_abort_intr(struct c4iw_dev *dev, struct sk_buff *skb) 42518da7e7a5SSteve Wise { 42528da7e7a5SSteve Wise struct cpl_abort_req_rss *req = cplhdr(skb); 42538da7e7a5SSteve Wise struct c4iw_ep *ep; 42548da7e7a5SSteve Wise unsigned int tid = GET_TID(req); 42558da7e7a5SSteve Wise 4256944661ddSHariprasad S ep = get_ep_from_tid(dev, tid); 4257944661ddSHariprasad S /* This EP will be dereferenced in peer_abort() */ 425814b92228SSteve Wise if (!ep) { 425914b92228SSteve Wise printk(KERN_WARNING MOD 426014b92228SSteve Wise "Abort on non-existent endpoint, tid %d\n", tid); 426114b92228SSteve Wise kfree_skb(skb); 426214b92228SSteve Wise return 0; 426314b92228SSteve Wise } 42647a2cea2aSSteve Wise if (is_neg_adv(req->status)) { 4265179d03bbSHariprasad S PDBG("%s Negative advice on abort- tid %u status %d (%s)\n", 4266179d03bbSHariprasad S __func__, ep->hwtid, req->status, 4267179d03bbSHariprasad S neg_adv_str(req->status)); 4268944661ddSHariprasad S goto out; 42698da7e7a5SSteve Wise } 42708da7e7a5SSteve Wise PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid, 42718da7e7a5SSteve Wise ep->com.state); 42728da7e7a5SSteve Wise 42738da7e7a5SSteve Wise c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); 4274944661ddSHariprasad S out: 42758da7e7a5SSteve Wise sched(dev, skb); 42768da7e7a5SSteve Wise return 0; 42778da7e7a5SSteve Wise } 42788da7e7a5SSteve Wise 4279be4c9badSRoland Dreier /* 4280be4c9badSRoland Dreier * Most upcalls from the T4 Core go to sched() to 4281be4c9badSRoland Dreier * schedule the processing on a work queue. 4282be4c9badSRoland Dreier */ 4283be4c9badSRoland Dreier c4iw_handler_func c4iw_handlers[NUM_CPL_CMDS] = { 4284be4c9badSRoland Dreier [CPL_ACT_ESTABLISH] = sched, 4285be4c9badSRoland Dreier [CPL_ACT_OPEN_RPL] = sched, 4286be4c9badSRoland Dreier [CPL_RX_DATA] = sched, 4287be4c9badSRoland Dreier [CPL_ABORT_RPL_RSS] = sched, 4288be4c9badSRoland Dreier [CPL_ABORT_RPL] = sched, 4289be4c9badSRoland Dreier [CPL_PASS_OPEN_RPL] = sched, 4290be4c9badSRoland Dreier [CPL_CLOSE_LISTSRV_RPL] = sched, 4291be4c9badSRoland Dreier [CPL_PASS_ACCEPT_REQ] = sched, 4292be4c9badSRoland Dreier [CPL_PASS_ESTABLISH] = sched, 4293be4c9badSRoland Dreier [CPL_PEER_CLOSE] = sched, 4294be4c9badSRoland Dreier [CPL_CLOSE_CON_RPL] = sched, 42958da7e7a5SSteve Wise [CPL_ABORT_REQ_RSS] = peer_abort_intr, 4296be4c9badSRoland Dreier [CPL_RDMA_TERMINATE] = sched, 4297be4c9badSRoland Dreier [CPL_FW4_ACK] = sched, 4298be4c9badSRoland Dreier [CPL_SET_TCB_RPL] = set_tcb_rpl, 42991cab775cSVipul Pandya [CPL_FW6_MSG] = fw6_msg, 43001cab775cSVipul Pandya [CPL_RX_PKT] = sched 4301be4c9badSRoland Dreier }; 4302be4c9badSRoland Dreier 4303cfdda9d7SSteve Wise int __init c4iw_cm_init(void) 4304cfdda9d7SSteve Wise { 4305be4c9badSRoland Dreier spin_lock_init(&timeout_lock); 4306cfdda9d7SSteve Wise skb_queue_head_init(&rxq); 4307cfdda9d7SSteve Wise 4308cfdda9d7SSteve Wise workq = create_singlethread_workqueue("iw_cxgb4"); 4309cfdda9d7SSteve Wise if (!workq) 4310cfdda9d7SSteve Wise return -ENOMEM; 4311cfdda9d7SSteve Wise 4312cfdda9d7SSteve Wise return 0; 4313cfdda9d7SSteve Wise } 4314cfdda9d7SSteve Wise 431546c1376dSSteve Wise void c4iw_cm_term(void) 4316cfdda9d7SSteve Wise { 4317be4c9badSRoland Dreier WARN_ON(!list_empty(&timeout_list)); 4318cfdda9d7SSteve Wise flush_workqueue(workq); 4319cfdda9d7SSteve Wise destroy_workqueue(workq); 4320cfdda9d7SSteve Wise } 4321