1cfdda9d7SSteve Wise /* 2cfdda9d7SSteve Wise * Copyright (c) 2009-2010 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> 41cfdda9d7SSteve Wise 42cfdda9d7SSteve Wise #include <net/neighbour.h> 43cfdda9d7SSteve Wise #include <net/netevent.h> 44cfdda9d7SSteve Wise #include <net/route.h> 45cfdda9d7SSteve Wise 46cfdda9d7SSteve Wise #include "iw_cxgb4.h" 47cfdda9d7SSteve Wise 48cfdda9d7SSteve Wise static char *states[] = { 49cfdda9d7SSteve Wise "idle", 50cfdda9d7SSteve Wise "listen", 51cfdda9d7SSteve Wise "connecting", 52cfdda9d7SSteve Wise "mpa_wait_req", 53cfdda9d7SSteve Wise "mpa_req_sent", 54cfdda9d7SSteve Wise "mpa_req_rcvd", 55cfdda9d7SSteve Wise "mpa_rep_sent", 56cfdda9d7SSteve Wise "fpdu_mode", 57cfdda9d7SSteve Wise "aborting", 58cfdda9d7SSteve Wise "closing", 59cfdda9d7SSteve Wise "moribund", 60cfdda9d7SSteve Wise "dead", 61cfdda9d7SSteve Wise NULL, 62cfdda9d7SSteve Wise }; 63cfdda9d7SSteve Wise 64b52fe09eSSteve Wise static int dack_mode = 1; 65ba6d3925SSteve Wise module_param(dack_mode, int, 0644); 66b52fe09eSSteve Wise MODULE_PARM_DESC(dack_mode, "Delayed ack mode (default=1)"); 67ba6d3925SSteve Wise 68be4c9badSRoland Dreier int c4iw_max_read_depth = 8; 69be4c9badSRoland Dreier module_param(c4iw_max_read_depth, int, 0644); 70be4c9badSRoland Dreier MODULE_PARM_DESC(c4iw_max_read_depth, "Per-connection max ORD/IRD (default=8)"); 71be4c9badSRoland Dreier 72cfdda9d7SSteve Wise static int enable_tcp_timestamps; 73cfdda9d7SSteve Wise module_param(enable_tcp_timestamps, int, 0644); 74cfdda9d7SSteve Wise MODULE_PARM_DESC(enable_tcp_timestamps, "Enable tcp timestamps (default=0)"); 75cfdda9d7SSteve Wise 76cfdda9d7SSteve Wise static int enable_tcp_sack; 77cfdda9d7SSteve Wise module_param(enable_tcp_sack, int, 0644); 78cfdda9d7SSteve Wise MODULE_PARM_DESC(enable_tcp_sack, "Enable tcp SACK (default=0)"); 79cfdda9d7SSteve Wise 80cfdda9d7SSteve Wise static int enable_tcp_window_scaling = 1; 81cfdda9d7SSteve Wise module_param(enable_tcp_window_scaling, int, 0644); 82cfdda9d7SSteve Wise MODULE_PARM_DESC(enable_tcp_window_scaling, 83cfdda9d7SSteve Wise "Enable tcp window scaling (default=1)"); 84cfdda9d7SSteve Wise 85cfdda9d7SSteve Wise int c4iw_debug; 86cfdda9d7SSteve Wise module_param(c4iw_debug, int, 0644); 87cfdda9d7SSteve Wise MODULE_PARM_DESC(c4iw_debug, "Enable debug logging (default=0)"); 88cfdda9d7SSteve Wise 89cfdda9d7SSteve Wise static int peer2peer; 90cfdda9d7SSteve Wise module_param(peer2peer, int, 0644); 91cfdda9d7SSteve Wise MODULE_PARM_DESC(peer2peer, "Support peer2peer ULPs (default=0)"); 92cfdda9d7SSteve Wise 93cfdda9d7SSteve Wise static int p2p_type = FW_RI_INIT_P2PTYPE_READ_REQ; 94cfdda9d7SSteve Wise module_param(p2p_type, int, 0644); 95cfdda9d7SSteve Wise MODULE_PARM_DESC(p2p_type, "RDMAP opcode to use for the RTR message: " 96cfdda9d7SSteve Wise "1=RDMA_READ 0=RDMA_WRITE (default 1)"); 97cfdda9d7SSteve Wise 98cfdda9d7SSteve Wise static int ep_timeout_secs = 60; 99cfdda9d7SSteve Wise module_param(ep_timeout_secs, int, 0644); 100cfdda9d7SSteve Wise MODULE_PARM_DESC(ep_timeout_secs, "CM Endpoint operation timeout " 101cfdda9d7SSteve Wise "in seconds (default=60)"); 102cfdda9d7SSteve Wise 103cfdda9d7SSteve Wise static int mpa_rev = 1; 104cfdda9d7SSteve Wise module_param(mpa_rev, int, 0644); 105cfdda9d7SSteve Wise MODULE_PARM_DESC(mpa_rev, "MPA Revision, 0 supports amso1100, " 106d2fe99e8SKumar Sanghvi "1 is RFC0544 spec compliant, 2 is IETF MPA Peer Connect Draft" 107d2fe99e8SKumar Sanghvi " compliant (default=1)"); 108cfdda9d7SSteve Wise 109cfdda9d7SSteve Wise static int markers_enabled; 110cfdda9d7SSteve Wise module_param(markers_enabled, int, 0644); 111cfdda9d7SSteve Wise MODULE_PARM_DESC(markers_enabled, "Enable MPA MARKERS (default(0)=disabled)"); 112cfdda9d7SSteve Wise 113cfdda9d7SSteve Wise static int crc_enabled = 1; 114cfdda9d7SSteve Wise module_param(crc_enabled, int, 0644); 115cfdda9d7SSteve Wise MODULE_PARM_DESC(crc_enabled, "Enable MPA CRC (default(1)=enabled)"); 116cfdda9d7SSteve Wise 117cfdda9d7SSteve Wise static int rcv_win = 256 * 1024; 118cfdda9d7SSteve Wise module_param(rcv_win, int, 0644); 119cfdda9d7SSteve Wise MODULE_PARM_DESC(rcv_win, "TCP receive window in bytes (default=256KB)"); 120cfdda9d7SSteve Wise 12198ae68b7SSteve Wise static int snd_win = 128 * 1024; 122cfdda9d7SSteve Wise module_param(snd_win, int, 0644); 12398ae68b7SSteve Wise MODULE_PARM_DESC(snd_win, "TCP send window in bytes (default=128KB)"); 124cfdda9d7SSteve Wise 125cfdda9d7SSteve Wise static struct workqueue_struct *workq; 126cfdda9d7SSteve Wise 127cfdda9d7SSteve Wise static struct sk_buff_head rxq; 128cfdda9d7SSteve Wise 129cfdda9d7SSteve Wise static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp); 130cfdda9d7SSteve Wise static void ep_timeout(unsigned long arg); 131cfdda9d7SSteve Wise static void connect_reply_upcall(struct c4iw_ep *ep, int status); 132cfdda9d7SSteve Wise 133be4c9badSRoland Dreier static LIST_HEAD(timeout_list); 134be4c9badSRoland Dreier static spinlock_t timeout_lock; 135be4c9badSRoland Dreier 136cfdda9d7SSteve Wise static void start_ep_timer(struct c4iw_ep *ep) 137cfdda9d7SSteve Wise { 138cfdda9d7SSteve Wise PDBG("%s ep %p\n", __func__, ep); 139cfdda9d7SSteve Wise if (timer_pending(&ep->timer)) { 140cfdda9d7SSteve Wise PDBG("%s stopped / restarted timer ep %p\n", __func__, ep); 141cfdda9d7SSteve Wise del_timer_sync(&ep->timer); 142cfdda9d7SSteve Wise } else 143cfdda9d7SSteve Wise c4iw_get_ep(&ep->com); 144cfdda9d7SSteve Wise ep->timer.expires = jiffies + ep_timeout_secs * HZ; 145cfdda9d7SSteve Wise ep->timer.data = (unsigned long)ep; 146cfdda9d7SSteve Wise ep->timer.function = ep_timeout; 147cfdda9d7SSteve Wise add_timer(&ep->timer); 148cfdda9d7SSteve Wise } 149cfdda9d7SSteve Wise 150cfdda9d7SSteve Wise static void stop_ep_timer(struct c4iw_ep *ep) 151cfdda9d7SSteve Wise { 152cfdda9d7SSteve Wise PDBG("%s ep %p\n", __func__, ep); 153cfdda9d7SSteve Wise if (!timer_pending(&ep->timer)) { 154cfdda9d7SSteve Wise printk(KERN_ERR "%s timer stopped when its not running! " 155cfdda9d7SSteve Wise "ep %p state %u\n", __func__, ep, ep->com.state); 156cfdda9d7SSteve Wise WARN_ON(1); 157cfdda9d7SSteve Wise return; 158cfdda9d7SSteve Wise } 159cfdda9d7SSteve Wise del_timer_sync(&ep->timer); 160cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 161cfdda9d7SSteve Wise } 162cfdda9d7SSteve Wise 163cfdda9d7SSteve Wise static int c4iw_l2t_send(struct c4iw_rdev *rdev, struct sk_buff *skb, 164cfdda9d7SSteve Wise struct l2t_entry *l2e) 165cfdda9d7SSteve Wise { 166cfdda9d7SSteve Wise int error = 0; 167cfdda9d7SSteve Wise 168cfdda9d7SSteve Wise if (c4iw_fatal_error(rdev)) { 169cfdda9d7SSteve Wise kfree_skb(skb); 170cfdda9d7SSteve Wise PDBG("%s - device in error state - dropping\n", __func__); 171cfdda9d7SSteve Wise return -EIO; 172cfdda9d7SSteve Wise } 173cfdda9d7SSteve Wise error = cxgb4_l2t_send(rdev->lldi.ports[0], skb, l2e); 174cfdda9d7SSteve Wise if (error < 0) 175cfdda9d7SSteve Wise kfree_skb(skb); 17674594861SSteve Wise return error < 0 ? error : 0; 177cfdda9d7SSteve Wise } 178cfdda9d7SSteve Wise 179cfdda9d7SSteve Wise int c4iw_ofld_send(struct c4iw_rdev *rdev, struct sk_buff *skb) 180cfdda9d7SSteve Wise { 181cfdda9d7SSteve Wise int error = 0; 182cfdda9d7SSteve Wise 183cfdda9d7SSteve Wise if (c4iw_fatal_error(rdev)) { 184cfdda9d7SSteve Wise kfree_skb(skb); 185cfdda9d7SSteve Wise PDBG("%s - device in error state - dropping\n", __func__); 186cfdda9d7SSteve Wise return -EIO; 187cfdda9d7SSteve Wise } 188cfdda9d7SSteve Wise error = cxgb4_ofld_send(rdev->lldi.ports[0], skb); 189cfdda9d7SSteve Wise if (error < 0) 190cfdda9d7SSteve Wise kfree_skb(skb); 19174594861SSteve Wise return error < 0 ? error : 0; 192cfdda9d7SSteve Wise } 193cfdda9d7SSteve Wise 194cfdda9d7SSteve Wise static void release_tid(struct c4iw_rdev *rdev, u32 hwtid, struct sk_buff *skb) 195cfdda9d7SSteve Wise { 196cfdda9d7SSteve Wise struct cpl_tid_release *req; 197cfdda9d7SSteve Wise 198cfdda9d7SSteve Wise skb = get_skb(skb, sizeof *req, GFP_KERNEL); 199cfdda9d7SSteve Wise if (!skb) 200cfdda9d7SSteve Wise return; 201cfdda9d7SSteve Wise req = (struct cpl_tid_release *) skb_put(skb, sizeof(*req)); 202cfdda9d7SSteve Wise INIT_TP_WR(req, hwtid); 203cfdda9d7SSteve Wise OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_TID_RELEASE, hwtid)); 204cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_SETUP, 0); 205cfdda9d7SSteve Wise c4iw_ofld_send(rdev, skb); 206cfdda9d7SSteve Wise return; 207cfdda9d7SSteve Wise } 208cfdda9d7SSteve Wise 209cfdda9d7SSteve Wise static void set_emss(struct c4iw_ep *ep, u16 opt) 210cfdda9d7SSteve Wise { 211cfdda9d7SSteve Wise ep->emss = ep->com.dev->rdev.lldi.mtus[GET_TCPOPT_MSS(opt)] - 40; 212cfdda9d7SSteve Wise ep->mss = ep->emss; 213cfdda9d7SSteve Wise if (GET_TCPOPT_TSTAMP(opt)) 214cfdda9d7SSteve Wise ep->emss -= 12; 215cfdda9d7SSteve Wise if (ep->emss < 128) 216cfdda9d7SSteve Wise ep->emss = 128; 217cfdda9d7SSteve Wise PDBG("%s mss_idx %u mss %u emss=%u\n", __func__, GET_TCPOPT_MSS(opt), 218cfdda9d7SSteve Wise ep->mss, ep->emss); 219cfdda9d7SSteve Wise } 220cfdda9d7SSteve Wise 221cfdda9d7SSteve Wise static enum c4iw_ep_state state_read(struct c4iw_ep_common *epc) 222cfdda9d7SSteve Wise { 223cfdda9d7SSteve Wise enum c4iw_ep_state state; 224cfdda9d7SSteve Wise 2252f5b48c3SSteve Wise mutex_lock(&epc->mutex); 226cfdda9d7SSteve Wise state = epc->state; 2272f5b48c3SSteve Wise mutex_unlock(&epc->mutex); 228cfdda9d7SSteve Wise return state; 229cfdda9d7SSteve Wise } 230cfdda9d7SSteve Wise 231cfdda9d7SSteve Wise static void __state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new) 232cfdda9d7SSteve Wise { 233cfdda9d7SSteve Wise epc->state = new; 234cfdda9d7SSteve Wise } 235cfdda9d7SSteve Wise 236cfdda9d7SSteve Wise static void state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new) 237cfdda9d7SSteve Wise { 2382f5b48c3SSteve Wise mutex_lock(&epc->mutex); 239cfdda9d7SSteve Wise PDBG("%s - %s -> %s\n", __func__, states[epc->state], states[new]); 240cfdda9d7SSteve Wise __state_set(epc, new); 2412f5b48c3SSteve Wise mutex_unlock(&epc->mutex); 242cfdda9d7SSteve Wise return; 243cfdda9d7SSteve Wise } 244cfdda9d7SSteve Wise 245cfdda9d7SSteve Wise static void *alloc_ep(int size, gfp_t gfp) 246cfdda9d7SSteve Wise { 247cfdda9d7SSteve Wise struct c4iw_ep_common *epc; 248cfdda9d7SSteve Wise 249cfdda9d7SSteve Wise epc = kzalloc(size, gfp); 250cfdda9d7SSteve Wise if (epc) { 251cfdda9d7SSteve Wise kref_init(&epc->kref); 2522f5b48c3SSteve Wise mutex_init(&epc->mutex); 253aadc4df3SSteve Wise c4iw_init_wr_wait(&epc->wr_wait); 254cfdda9d7SSteve Wise } 255cfdda9d7SSteve Wise PDBG("%s alloc ep %p\n", __func__, epc); 256cfdda9d7SSteve Wise return epc; 257cfdda9d7SSteve Wise } 258cfdda9d7SSteve Wise 259cfdda9d7SSteve Wise void _c4iw_free_ep(struct kref *kref) 260cfdda9d7SSteve Wise { 261cfdda9d7SSteve Wise struct c4iw_ep *ep; 262cfdda9d7SSteve Wise 263cfdda9d7SSteve Wise ep = container_of(kref, struct c4iw_ep, com.kref); 264cfdda9d7SSteve Wise PDBG("%s ep %p state %s\n", __func__, ep, states[state_read(&ep->com)]); 265cfdda9d7SSteve Wise if (test_bit(RELEASE_RESOURCES, &ep->com.flags)) { 266cfdda9d7SSteve Wise cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid); 267cfdda9d7SSteve Wise dst_release(ep->dst); 268cfdda9d7SSteve Wise cxgb4_l2t_release(ep->l2t); 269cfdda9d7SSteve Wise } 270cfdda9d7SSteve Wise kfree(ep); 271cfdda9d7SSteve Wise } 272cfdda9d7SSteve Wise 273cfdda9d7SSteve Wise static void release_ep_resources(struct c4iw_ep *ep) 274cfdda9d7SSteve Wise { 275cfdda9d7SSteve Wise set_bit(RELEASE_RESOURCES, &ep->com.flags); 276cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 277cfdda9d7SSteve Wise } 278cfdda9d7SSteve Wise 279cfdda9d7SSteve Wise static int status2errno(int status) 280cfdda9d7SSteve Wise { 281cfdda9d7SSteve Wise switch (status) { 282cfdda9d7SSteve Wise case CPL_ERR_NONE: 283cfdda9d7SSteve Wise return 0; 284cfdda9d7SSteve Wise case CPL_ERR_CONN_RESET: 285cfdda9d7SSteve Wise return -ECONNRESET; 286cfdda9d7SSteve Wise case CPL_ERR_ARP_MISS: 287cfdda9d7SSteve Wise return -EHOSTUNREACH; 288cfdda9d7SSteve Wise case CPL_ERR_CONN_TIMEDOUT: 289cfdda9d7SSteve Wise return -ETIMEDOUT; 290cfdda9d7SSteve Wise case CPL_ERR_TCAM_FULL: 291cfdda9d7SSteve Wise return -ENOMEM; 292cfdda9d7SSteve Wise case CPL_ERR_CONN_EXIST: 293cfdda9d7SSteve Wise return -EADDRINUSE; 294cfdda9d7SSteve Wise default: 295cfdda9d7SSteve Wise return -EIO; 296cfdda9d7SSteve Wise } 297cfdda9d7SSteve Wise } 298cfdda9d7SSteve Wise 299cfdda9d7SSteve Wise /* 300cfdda9d7SSteve Wise * Try and reuse skbs already allocated... 301cfdda9d7SSteve Wise */ 302cfdda9d7SSteve Wise static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp) 303cfdda9d7SSteve Wise { 304cfdda9d7SSteve Wise if (skb && !skb_is_nonlinear(skb) && !skb_cloned(skb)) { 305cfdda9d7SSteve Wise skb_trim(skb, 0); 306cfdda9d7SSteve Wise skb_get(skb); 307cfdda9d7SSteve Wise skb_reset_transport_header(skb); 308cfdda9d7SSteve Wise } else { 309cfdda9d7SSteve Wise skb = alloc_skb(len, gfp); 310cfdda9d7SSteve Wise } 311cfdda9d7SSteve Wise return skb; 312cfdda9d7SSteve Wise } 313cfdda9d7SSteve Wise 314cfdda9d7SSteve Wise static struct rtable *find_route(struct c4iw_dev *dev, __be32 local_ip, 315cfdda9d7SSteve Wise __be32 peer_ip, __be16 local_port, 316cfdda9d7SSteve Wise __be16 peer_port, u8 tos) 317cfdda9d7SSteve Wise { 318cfdda9d7SSteve Wise struct rtable *rt; 31931e4543dSDavid S. Miller struct flowi4 fl4; 320cfdda9d7SSteve Wise 32131e4543dSDavid S. Miller rt = ip_route_output_ports(&init_net, &fl4, NULL, peer_ip, local_ip, 32278fbfd8aSDavid S. Miller peer_port, local_port, IPPROTO_TCP, 32378fbfd8aSDavid S. Miller tos, 0); 324b23dd4feSDavid S. Miller if (IS_ERR(rt)) 325cfdda9d7SSteve Wise return NULL; 326cfdda9d7SSteve Wise return rt; 327cfdda9d7SSteve Wise } 328cfdda9d7SSteve Wise 329cfdda9d7SSteve Wise static void arp_failure_discard(void *handle, struct sk_buff *skb) 330cfdda9d7SSteve Wise { 331cfdda9d7SSteve Wise PDBG("%s c4iw_dev %p\n", __func__, handle); 332cfdda9d7SSteve Wise kfree_skb(skb); 333cfdda9d7SSteve Wise } 334cfdda9d7SSteve Wise 335cfdda9d7SSteve Wise /* 336cfdda9d7SSteve Wise * Handle an ARP failure for an active open. 337cfdda9d7SSteve Wise */ 338cfdda9d7SSteve Wise static void act_open_req_arp_failure(void *handle, struct sk_buff *skb) 339cfdda9d7SSteve Wise { 340cfdda9d7SSteve Wise printk(KERN_ERR MOD "ARP failure duing connect\n"); 341cfdda9d7SSteve Wise kfree_skb(skb); 342cfdda9d7SSteve Wise } 343cfdda9d7SSteve Wise 344cfdda9d7SSteve Wise /* 345cfdda9d7SSteve Wise * Handle an ARP failure for a CPL_ABORT_REQ. Change it into a no RST variant 346cfdda9d7SSteve Wise * and send it along. 347cfdda9d7SSteve Wise */ 348cfdda9d7SSteve Wise static void abort_arp_failure(void *handle, struct sk_buff *skb) 349cfdda9d7SSteve Wise { 350cfdda9d7SSteve Wise struct c4iw_rdev *rdev = handle; 351cfdda9d7SSteve Wise struct cpl_abort_req *req = cplhdr(skb); 352cfdda9d7SSteve Wise 353cfdda9d7SSteve Wise PDBG("%s rdev %p\n", __func__, rdev); 354cfdda9d7SSteve Wise req->cmd = CPL_ABORT_NO_RST; 355cfdda9d7SSteve Wise c4iw_ofld_send(rdev, skb); 356cfdda9d7SSteve Wise } 357cfdda9d7SSteve Wise 358cfdda9d7SSteve Wise static void send_flowc(struct c4iw_ep *ep, struct sk_buff *skb) 359cfdda9d7SSteve Wise { 360cfdda9d7SSteve Wise unsigned int flowclen = 80; 361cfdda9d7SSteve Wise struct fw_flowc_wr *flowc; 362cfdda9d7SSteve Wise int i; 363cfdda9d7SSteve Wise 364cfdda9d7SSteve Wise skb = get_skb(skb, flowclen, GFP_KERNEL); 365cfdda9d7SSteve Wise flowc = (struct fw_flowc_wr *)__skb_put(skb, flowclen); 366cfdda9d7SSteve Wise 367cfdda9d7SSteve Wise flowc->op_to_nparams = cpu_to_be32(FW_WR_OP(FW_FLOWC_WR) | 368cfdda9d7SSteve Wise FW_FLOWC_WR_NPARAMS(8)); 369cfdda9d7SSteve Wise flowc->flowid_len16 = cpu_to_be32(FW_WR_LEN16(DIV_ROUND_UP(flowclen, 370cfdda9d7SSteve Wise 16)) | FW_WR_FLOWID(ep->hwtid)); 371cfdda9d7SSteve Wise 372cfdda9d7SSteve Wise flowc->mnemval[0].mnemonic = FW_FLOWC_MNEM_PFNVFN; 37394788657SSteve Wise flowc->mnemval[0].val = cpu_to_be32(PCI_FUNC(ep->com.dev->rdev.lldi.pdev->devfn) << 8); 374cfdda9d7SSteve Wise flowc->mnemval[1].mnemonic = FW_FLOWC_MNEM_CH; 375cfdda9d7SSteve Wise flowc->mnemval[1].val = cpu_to_be32(ep->tx_chan); 376cfdda9d7SSteve Wise flowc->mnemval[2].mnemonic = FW_FLOWC_MNEM_PORT; 377cfdda9d7SSteve Wise flowc->mnemval[2].val = cpu_to_be32(ep->tx_chan); 378cfdda9d7SSteve Wise flowc->mnemval[3].mnemonic = FW_FLOWC_MNEM_IQID; 379cfdda9d7SSteve Wise flowc->mnemval[3].val = cpu_to_be32(ep->rss_qid); 380cfdda9d7SSteve Wise flowc->mnemval[4].mnemonic = FW_FLOWC_MNEM_SNDNXT; 381cfdda9d7SSteve Wise flowc->mnemval[4].val = cpu_to_be32(ep->snd_seq); 382cfdda9d7SSteve Wise flowc->mnemval[5].mnemonic = FW_FLOWC_MNEM_RCVNXT; 383cfdda9d7SSteve Wise flowc->mnemval[5].val = cpu_to_be32(ep->rcv_seq); 384cfdda9d7SSteve Wise flowc->mnemval[6].mnemonic = FW_FLOWC_MNEM_SNDBUF; 385cfdda9d7SSteve Wise flowc->mnemval[6].val = cpu_to_be32(snd_win); 386cfdda9d7SSteve Wise flowc->mnemval[7].mnemonic = FW_FLOWC_MNEM_MSS; 387cfdda9d7SSteve Wise flowc->mnemval[7].val = cpu_to_be32(ep->emss); 388cfdda9d7SSteve Wise /* Pad WR to 16 byte boundary */ 389cfdda9d7SSteve Wise flowc->mnemval[8].mnemonic = 0; 390cfdda9d7SSteve Wise flowc->mnemval[8].val = 0; 391cfdda9d7SSteve Wise for (i = 0; i < 9; i++) { 392cfdda9d7SSteve Wise flowc->mnemval[i].r4[0] = 0; 393cfdda9d7SSteve Wise flowc->mnemval[i].r4[1] = 0; 394cfdda9d7SSteve Wise flowc->mnemval[i].r4[2] = 0; 395cfdda9d7SSteve Wise } 396cfdda9d7SSteve Wise 397cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); 398cfdda9d7SSteve Wise c4iw_ofld_send(&ep->com.dev->rdev, skb); 399cfdda9d7SSteve Wise } 400cfdda9d7SSteve Wise 401cfdda9d7SSteve Wise static int send_halfclose(struct c4iw_ep *ep, gfp_t gfp) 402cfdda9d7SSteve Wise { 403cfdda9d7SSteve Wise struct cpl_close_con_req *req; 404cfdda9d7SSteve Wise struct sk_buff *skb; 405cfdda9d7SSteve Wise int wrlen = roundup(sizeof *req, 16); 406cfdda9d7SSteve Wise 407cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 408cfdda9d7SSteve Wise skb = get_skb(NULL, wrlen, gfp); 409cfdda9d7SSteve Wise if (!skb) { 410cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - failed to alloc skb\n", __func__); 411cfdda9d7SSteve Wise return -ENOMEM; 412cfdda9d7SSteve Wise } 413cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); 414cfdda9d7SSteve Wise t4_set_arp_err_handler(skb, NULL, arp_failure_discard); 415cfdda9d7SSteve Wise req = (struct cpl_close_con_req *) skb_put(skb, wrlen); 416cfdda9d7SSteve Wise memset(req, 0, wrlen); 417cfdda9d7SSteve Wise INIT_TP_WR(req, ep->hwtid); 418cfdda9d7SSteve Wise OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, 419cfdda9d7SSteve Wise ep->hwtid)); 420cfdda9d7SSteve Wise return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); 421cfdda9d7SSteve Wise } 422cfdda9d7SSteve Wise 423cfdda9d7SSteve Wise static int send_abort(struct c4iw_ep *ep, struct sk_buff *skb, gfp_t gfp) 424cfdda9d7SSteve Wise { 425cfdda9d7SSteve Wise struct cpl_abort_req *req; 426cfdda9d7SSteve Wise int wrlen = roundup(sizeof *req, 16); 427cfdda9d7SSteve Wise 428cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 429cfdda9d7SSteve Wise skb = get_skb(skb, wrlen, gfp); 430cfdda9d7SSteve Wise if (!skb) { 431cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - failed to alloc skb.\n", 432cfdda9d7SSteve Wise __func__); 433cfdda9d7SSteve Wise return -ENOMEM; 434cfdda9d7SSteve Wise } 435cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); 436cfdda9d7SSteve Wise t4_set_arp_err_handler(skb, &ep->com.dev->rdev, abort_arp_failure); 437cfdda9d7SSteve Wise req = (struct cpl_abort_req *) skb_put(skb, wrlen); 438cfdda9d7SSteve Wise memset(req, 0, wrlen); 439cfdda9d7SSteve Wise INIT_TP_WR(req, ep->hwtid); 440cfdda9d7SSteve Wise OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_REQ, ep->hwtid)); 441cfdda9d7SSteve Wise req->cmd = CPL_ABORT_SEND_RST; 442cfdda9d7SSteve Wise return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); 443cfdda9d7SSteve Wise } 444cfdda9d7SSteve Wise 445cfdda9d7SSteve Wise static int send_connect(struct c4iw_ep *ep) 446cfdda9d7SSteve Wise { 447cfdda9d7SSteve Wise struct cpl_act_open_req *req; 448cfdda9d7SSteve Wise struct sk_buff *skb; 449cfdda9d7SSteve Wise u64 opt0; 450cfdda9d7SSteve Wise u32 opt2; 451cfdda9d7SSteve Wise unsigned int mtu_idx; 452cfdda9d7SSteve Wise int wscale; 453cfdda9d7SSteve Wise int wrlen = roundup(sizeof *req, 16); 454cfdda9d7SSteve Wise 455cfdda9d7SSteve Wise PDBG("%s ep %p atid %u\n", __func__, ep, ep->atid); 456cfdda9d7SSteve Wise 457cfdda9d7SSteve Wise skb = get_skb(NULL, wrlen, GFP_KERNEL); 458cfdda9d7SSteve Wise if (!skb) { 459cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - failed to alloc skb.\n", 460cfdda9d7SSteve Wise __func__); 461cfdda9d7SSteve Wise return -ENOMEM; 462cfdda9d7SSteve Wise } 463d4f1a5c6SSteve Wise set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx); 464cfdda9d7SSteve Wise 465cfdda9d7SSteve Wise cxgb4_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx); 466cfdda9d7SSteve Wise wscale = compute_wscale(rcv_win); 467cfdda9d7SSteve Wise opt0 = KEEP_ALIVE(1) | 468ba6d3925SSteve Wise DELACK(1) | 469cfdda9d7SSteve Wise WND_SCALE(wscale) | 470cfdda9d7SSteve Wise MSS_IDX(mtu_idx) | 471cfdda9d7SSteve Wise L2T_IDX(ep->l2t->idx) | 472cfdda9d7SSteve Wise TX_CHAN(ep->tx_chan) | 473cfdda9d7SSteve Wise SMAC_SEL(ep->smac_idx) | 474cfdda9d7SSteve Wise DSCP(ep->tos) | 475b48f3b9cSSteve Wise ULP_MODE(ULP_MODE_TCPDDP) | 476cfdda9d7SSteve Wise RCV_BUFSIZ(rcv_win>>10); 477cfdda9d7SSteve Wise opt2 = RX_CHANNEL(0) | 478cfdda9d7SSteve Wise RSS_QUEUE_VALID | RSS_QUEUE(ep->rss_qid); 479cfdda9d7SSteve Wise if (enable_tcp_timestamps) 480cfdda9d7SSteve Wise opt2 |= TSTAMPS_EN(1); 481cfdda9d7SSteve Wise if (enable_tcp_sack) 482cfdda9d7SSteve Wise opt2 |= SACK_EN(1); 483cfdda9d7SSteve Wise if (wscale && enable_tcp_window_scaling) 484cfdda9d7SSteve Wise opt2 |= WND_SCALE_EN(1); 485cfdda9d7SSteve Wise t4_set_arp_err_handler(skb, NULL, act_open_req_arp_failure); 486cfdda9d7SSteve Wise 487cfdda9d7SSteve Wise req = (struct cpl_act_open_req *) skb_put(skb, wrlen); 488cfdda9d7SSteve Wise INIT_TP_WR(req, 0); 489cfdda9d7SSteve Wise OPCODE_TID(req) = cpu_to_be32( 490cfdda9d7SSteve Wise MK_OPCODE_TID(CPL_ACT_OPEN_REQ, ((ep->rss_qid<<14)|ep->atid))); 491cfdda9d7SSteve Wise req->local_port = ep->com.local_addr.sin_port; 492cfdda9d7SSteve Wise req->peer_port = ep->com.remote_addr.sin_port; 493cfdda9d7SSteve Wise req->local_ip = ep->com.local_addr.sin_addr.s_addr; 494cfdda9d7SSteve Wise req->peer_ip = ep->com.remote_addr.sin_addr.s_addr; 495cfdda9d7SSteve Wise req->opt0 = cpu_to_be64(opt0); 496cfdda9d7SSteve Wise req->params = 0; 497cfdda9d7SSteve Wise req->opt2 = cpu_to_be32(opt2); 498cfdda9d7SSteve Wise return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); 499cfdda9d7SSteve Wise } 500cfdda9d7SSteve Wise 501d2fe99e8SKumar Sanghvi static void send_mpa_req(struct c4iw_ep *ep, struct sk_buff *skb, 502d2fe99e8SKumar Sanghvi u8 mpa_rev_to_use) 503cfdda9d7SSteve Wise { 504cfdda9d7SSteve Wise int mpalen, wrlen; 505cfdda9d7SSteve Wise struct fw_ofld_tx_data_wr *req; 506cfdda9d7SSteve Wise struct mpa_message *mpa; 507d2fe99e8SKumar Sanghvi struct mpa_v2_conn_params mpa_v2_params; 508cfdda9d7SSteve Wise 509cfdda9d7SSteve Wise PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); 510cfdda9d7SSteve Wise 511cfdda9d7SSteve Wise BUG_ON(skb_cloned(skb)); 512cfdda9d7SSteve Wise 513cfdda9d7SSteve Wise mpalen = sizeof(*mpa) + ep->plen; 514d2fe99e8SKumar Sanghvi if (mpa_rev_to_use == 2) 515d2fe99e8SKumar Sanghvi mpalen += sizeof(struct mpa_v2_conn_params); 516cfdda9d7SSteve Wise wrlen = roundup(mpalen + sizeof *req, 16); 517cfdda9d7SSteve Wise skb = get_skb(skb, wrlen, GFP_KERNEL); 518cfdda9d7SSteve Wise if (!skb) { 519cfdda9d7SSteve Wise connect_reply_upcall(ep, -ENOMEM); 520cfdda9d7SSteve Wise return; 521cfdda9d7SSteve Wise } 522cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); 523cfdda9d7SSteve Wise 524cfdda9d7SSteve Wise req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen); 525cfdda9d7SSteve Wise memset(req, 0, wrlen); 526cfdda9d7SSteve Wise req->op_to_immdlen = cpu_to_be32( 527cfdda9d7SSteve Wise FW_WR_OP(FW_OFLD_TX_DATA_WR) | 528cfdda9d7SSteve Wise FW_WR_COMPL(1) | 529cfdda9d7SSteve Wise FW_WR_IMMDLEN(mpalen)); 530cfdda9d7SSteve Wise req->flowid_len16 = cpu_to_be32( 531cfdda9d7SSteve Wise FW_WR_FLOWID(ep->hwtid) | 532cfdda9d7SSteve Wise FW_WR_LEN16(wrlen >> 4)); 533cfdda9d7SSteve Wise req->plen = cpu_to_be32(mpalen); 534cfdda9d7SSteve Wise req->tunnel_to_proxy = cpu_to_be32( 535cfdda9d7SSteve Wise FW_OFLD_TX_DATA_WR_FLUSH(1) | 536cfdda9d7SSteve Wise FW_OFLD_TX_DATA_WR_SHOVE(1)); 537cfdda9d7SSteve Wise 538cfdda9d7SSteve Wise mpa = (struct mpa_message *)(req + 1); 539cfdda9d7SSteve Wise memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)); 540cfdda9d7SSteve Wise mpa->flags = (crc_enabled ? MPA_CRC : 0) | 541d2fe99e8SKumar Sanghvi (markers_enabled ? MPA_MARKERS : 0) | 542d2fe99e8SKumar Sanghvi (mpa_rev_to_use == 2 ? MPA_ENHANCED_RDMA_CONN : 0); 543cfdda9d7SSteve Wise mpa->private_data_size = htons(ep->plen); 544d2fe99e8SKumar Sanghvi mpa->revision = mpa_rev_to_use; 54501b225e1SKumar Sanghvi if (mpa_rev_to_use == 1) { 546d2fe99e8SKumar Sanghvi ep->tried_with_mpa_v1 = 1; 54701b225e1SKumar Sanghvi ep->retry_with_mpa_v1 = 0; 54801b225e1SKumar Sanghvi } 549d2fe99e8SKumar Sanghvi 550d2fe99e8SKumar Sanghvi if (mpa_rev_to_use == 2) { 551d2fe99e8SKumar Sanghvi mpa->private_data_size += 552d2fe99e8SKumar Sanghvi htons(sizeof(struct mpa_v2_conn_params)); 553d2fe99e8SKumar Sanghvi mpa_v2_params.ird = htons((u16)ep->ird); 554d2fe99e8SKumar Sanghvi mpa_v2_params.ord = htons((u16)ep->ord); 555d2fe99e8SKumar Sanghvi 556d2fe99e8SKumar Sanghvi if (peer2peer) { 557d2fe99e8SKumar Sanghvi mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); 558d2fe99e8SKumar Sanghvi if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) 559d2fe99e8SKumar Sanghvi mpa_v2_params.ord |= 560d2fe99e8SKumar Sanghvi htons(MPA_V2_RDMA_WRITE_RTR); 561d2fe99e8SKumar Sanghvi else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) 562d2fe99e8SKumar Sanghvi mpa_v2_params.ord |= 563d2fe99e8SKumar Sanghvi htons(MPA_V2_RDMA_READ_RTR); 564d2fe99e8SKumar Sanghvi } 565d2fe99e8SKumar Sanghvi memcpy(mpa->private_data, &mpa_v2_params, 566d2fe99e8SKumar Sanghvi sizeof(struct mpa_v2_conn_params)); 567cfdda9d7SSteve Wise 568cfdda9d7SSteve Wise if (ep->plen) 569d2fe99e8SKumar Sanghvi memcpy(mpa->private_data + 570d2fe99e8SKumar Sanghvi sizeof(struct mpa_v2_conn_params), 571d2fe99e8SKumar Sanghvi ep->mpa_pkt + sizeof(*mpa), ep->plen); 572d2fe99e8SKumar Sanghvi } else 573d2fe99e8SKumar Sanghvi if (ep->plen) 574d2fe99e8SKumar Sanghvi memcpy(mpa->private_data, 575d2fe99e8SKumar Sanghvi ep->mpa_pkt + sizeof(*mpa), ep->plen); 576cfdda9d7SSteve Wise 577cfdda9d7SSteve Wise /* 578cfdda9d7SSteve Wise * Reference the mpa skb. This ensures the data area 579cfdda9d7SSteve Wise * will remain in memory until the hw acks the tx. 580cfdda9d7SSteve Wise * Function fw4_ack() will deref it. 581cfdda9d7SSteve Wise */ 582cfdda9d7SSteve Wise skb_get(skb); 583cfdda9d7SSteve Wise t4_set_arp_err_handler(skb, NULL, arp_failure_discard); 584cfdda9d7SSteve Wise BUG_ON(ep->mpa_skb); 585cfdda9d7SSteve Wise ep->mpa_skb = skb; 586cfdda9d7SSteve Wise c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); 587cfdda9d7SSteve Wise start_ep_timer(ep); 588cfdda9d7SSteve Wise state_set(&ep->com, MPA_REQ_SENT); 589cfdda9d7SSteve Wise ep->mpa_attr.initiator = 1; 590cfdda9d7SSteve Wise return; 591cfdda9d7SSteve Wise } 592cfdda9d7SSteve Wise 593cfdda9d7SSteve Wise static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen) 594cfdda9d7SSteve Wise { 595cfdda9d7SSteve Wise int mpalen, wrlen; 596cfdda9d7SSteve Wise struct fw_ofld_tx_data_wr *req; 597cfdda9d7SSteve Wise struct mpa_message *mpa; 598cfdda9d7SSteve Wise struct sk_buff *skb; 599d2fe99e8SKumar Sanghvi struct mpa_v2_conn_params mpa_v2_params; 600cfdda9d7SSteve Wise 601cfdda9d7SSteve Wise PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); 602cfdda9d7SSteve Wise 603cfdda9d7SSteve Wise mpalen = sizeof(*mpa) + plen; 604d2fe99e8SKumar Sanghvi if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) 605d2fe99e8SKumar Sanghvi mpalen += sizeof(struct mpa_v2_conn_params); 606cfdda9d7SSteve Wise wrlen = roundup(mpalen + sizeof *req, 16); 607cfdda9d7SSteve Wise 608cfdda9d7SSteve Wise skb = get_skb(NULL, wrlen, GFP_KERNEL); 609cfdda9d7SSteve Wise if (!skb) { 610cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__); 611cfdda9d7SSteve Wise return -ENOMEM; 612cfdda9d7SSteve Wise } 613cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); 614cfdda9d7SSteve Wise 615cfdda9d7SSteve Wise req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen); 616cfdda9d7SSteve Wise memset(req, 0, wrlen); 617cfdda9d7SSteve Wise req->op_to_immdlen = cpu_to_be32( 618cfdda9d7SSteve Wise FW_WR_OP(FW_OFLD_TX_DATA_WR) | 619cfdda9d7SSteve Wise FW_WR_COMPL(1) | 620cfdda9d7SSteve Wise FW_WR_IMMDLEN(mpalen)); 621cfdda9d7SSteve Wise req->flowid_len16 = cpu_to_be32( 622cfdda9d7SSteve Wise FW_WR_FLOWID(ep->hwtid) | 623cfdda9d7SSteve Wise FW_WR_LEN16(wrlen >> 4)); 624cfdda9d7SSteve Wise req->plen = cpu_to_be32(mpalen); 625cfdda9d7SSteve Wise req->tunnel_to_proxy = cpu_to_be32( 626cfdda9d7SSteve Wise FW_OFLD_TX_DATA_WR_FLUSH(1) | 627cfdda9d7SSteve Wise FW_OFLD_TX_DATA_WR_SHOVE(1)); 628cfdda9d7SSteve Wise 629cfdda9d7SSteve Wise mpa = (struct mpa_message *)(req + 1); 630cfdda9d7SSteve Wise memset(mpa, 0, sizeof(*mpa)); 631cfdda9d7SSteve Wise memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 632cfdda9d7SSteve Wise mpa->flags = MPA_REJECT; 633cfdda9d7SSteve Wise mpa->revision = mpa_rev; 634cfdda9d7SSteve Wise mpa->private_data_size = htons(plen); 635d2fe99e8SKumar Sanghvi 636d2fe99e8SKumar Sanghvi if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 637d2fe99e8SKumar Sanghvi mpa->flags |= MPA_ENHANCED_RDMA_CONN; 638d2fe99e8SKumar Sanghvi mpa->private_data_size += 639d2fe99e8SKumar Sanghvi htons(sizeof(struct mpa_v2_conn_params)); 640d2fe99e8SKumar Sanghvi mpa_v2_params.ird = htons(((u16)ep->ird) | 641d2fe99e8SKumar Sanghvi (peer2peer ? MPA_V2_PEER2PEER_MODEL : 642d2fe99e8SKumar Sanghvi 0)); 643d2fe99e8SKumar Sanghvi mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ? 644d2fe99e8SKumar Sanghvi (p2p_type == 645d2fe99e8SKumar Sanghvi FW_RI_INIT_P2PTYPE_RDMA_WRITE ? 646d2fe99e8SKumar Sanghvi MPA_V2_RDMA_WRITE_RTR : p2p_type == 647d2fe99e8SKumar Sanghvi FW_RI_INIT_P2PTYPE_READ_REQ ? 648d2fe99e8SKumar Sanghvi MPA_V2_RDMA_READ_RTR : 0) : 0)); 649d2fe99e8SKumar Sanghvi memcpy(mpa->private_data, &mpa_v2_params, 650d2fe99e8SKumar Sanghvi sizeof(struct mpa_v2_conn_params)); 651d2fe99e8SKumar Sanghvi 652d2fe99e8SKumar Sanghvi if (ep->plen) 653d2fe99e8SKumar Sanghvi memcpy(mpa->private_data + 654d2fe99e8SKumar Sanghvi sizeof(struct mpa_v2_conn_params), pdata, plen); 655d2fe99e8SKumar Sanghvi } else 656cfdda9d7SSteve Wise if (plen) 657cfdda9d7SSteve Wise memcpy(mpa->private_data, pdata, plen); 658cfdda9d7SSteve Wise 659cfdda9d7SSteve Wise /* 660cfdda9d7SSteve Wise * Reference the mpa skb again. This ensures the data area 661cfdda9d7SSteve Wise * will remain in memory until the hw acks the tx. 662cfdda9d7SSteve Wise * Function fw4_ack() will deref it. 663cfdda9d7SSteve Wise */ 664cfdda9d7SSteve Wise skb_get(skb); 665cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); 666cfdda9d7SSteve Wise t4_set_arp_err_handler(skb, NULL, arp_failure_discard); 667cfdda9d7SSteve Wise BUG_ON(ep->mpa_skb); 668cfdda9d7SSteve Wise ep->mpa_skb = skb; 669cfdda9d7SSteve Wise return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); 670cfdda9d7SSteve Wise } 671cfdda9d7SSteve Wise 672cfdda9d7SSteve Wise static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen) 673cfdda9d7SSteve Wise { 674cfdda9d7SSteve Wise int mpalen, wrlen; 675cfdda9d7SSteve Wise struct fw_ofld_tx_data_wr *req; 676cfdda9d7SSteve Wise struct mpa_message *mpa; 677cfdda9d7SSteve Wise struct sk_buff *skb; 678d2fe99e8SKumar Sanghvi struct mpa_v2_conn_params mpa_v2_params; 679cfdda9d7SSteve Wise 680cfdda9d7SSteve Wise PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); 681cfdda9d7SSteve Wise 682cfdda9d7SSteve Wise mpalen = sizeof(*mpa) + plen; 683d2fe99e8SKumar Sanghvi if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) 684d2fe99e8SKumar Sanghvi mpalen += sizeof(struct mpa_v2_conn_params); 685cfdda9d7SSteve Wise wrlen = roundup(mpalen + sizeof *req, 16); 686cfdda9d7SSteve Wise 687cfdda9d7SSteve Wise skb = get_skb(NULL, wrlen, GFP_KERNEL); 688cfdda9d7SSteve Wise if (!skb) { 689cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__); 690cfdda9d7SSteve Wise return -ENOMEM; 691cfdda9d7SSteve Wise } 692cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); 693cfdda9d7SSteve Wise 694cfdda9d7SSteve Wise req = (struct fw_ofld_tx_data_wr *) skb_put(skb, wrlen); 695cfdda9d7SSteve Wise memset(req, 0, wrlen); 696cfdda9d7SSteve Wise req->op_to_immdlen = cpu_to_be32( 697cfdda9d7SSteve Wise FW_WR_OP(FW_OFLD_TX_DATA_WR) | 698cfdda9d7SSteve Wise FW_WR_COMPL(1) | 699cfdda9d7SSteve Wise FW_WR_IMMDLEN(mpalen)); 700cfdda9d7SSteve Wise req->flowid_len16 = cpu_to_be32( 701cfdda9d7SSteve Wise FW_WR_FLOWID(ep->hwtid) | 702cfdda9d7SSteve Wise FW_WR_LEN16(wrlen >> 4)); 703cfdda9d7SSteve Wise req->plen = cpu_to_be32(mpalen); 704cfdda9d7SSteve Wise req->tunnel_to_proxy = cpu_to_be32( 705cfdda9d7SSteve Wise FW_OFLD_TX_DATA_WR_FLUSH(1) | 706cfdda9d7SSteve Wise FW_OFLD_TX_DATA_WR_SHOVE(1)); 707cfdda9d7SSteve Wise 708cfdda9d7SSteve Wise mpa = (struct mpa_message *)(req + 1); 709cfdda9d7SSteve Wise memset(mpa, 0, sizeof(*mpa)); 710cfdda9d7SSteve Wise memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 711cfdda9d7SSteve Wise mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) | 712cfdda9d7SSteve Wise (markers_enabled ? MPA_MARKERS : 0); 713d2fe99e8SKumar Sanghvi mpa->revision = ep->mpa_attr.version; 714cfdda9d7SSteve Wise mpa->private_data_size = htons(plen); 715d2fe99e8SKumar Sanghvi 716d2fe99e8SKumar Sanghvi if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 717d2fe99e8SKumar Sanghvi mpa->flags |= MPA_ENHANCED_RDMA_CONN; 718d2fe99e8SKumar Sanghvi mpa->private_data_size += 719d2fe99e8SKumar Sanghvi htons(sizeof(struct mpa_v2_conn_params)); 720d2fe99e8SKumar Sanghvi mpa_v2_params.ird = htons((u16)ep->ird); 721d2fe99e8SKumar Sanghvi mpa_v2_params.ord = htons((u16)ep->ord); 722d2fe99e8SKumar Sanghvi if (peer2peer && (ep->mpa_attr.p2p_type != 723d2fe99e8SKumar Sanghvi FW_RI_INIT_P2PTYPE_DISABLED)) { 724d2fe99e8SKumar Sanghvi mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); 725d2fe99e8SKumar Sanghvi 726d2fe99e8SKumar Sanghvi if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) 727d2fe99e8SKumar Sanghvi mpa_v2_params.ord |= 728d2fe99e8SKumar Sanghvi htons(MPA_V2_RDMA_WRITE_RTR); 729d2fe99e8SKumar Sanghvi else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) 730d2fe99e8SKumar Sanghvi mpa_v2_params.ord |= 731d2fe99e8SKumar Sanghvi htons(MPA_V2_RDMA_READ_RTR); 732d2fe99e8SKumar Sanghvi } 733d2fe99e8SKumar Sanghvi 734d2fe99e8SKumar Sanghvi memcpy(mpa->private_data, &mpa_v2_params, 735d2fe99e8SKumar Sanghvi sizeof(struct mpa_v2_conn_params)); 736d2fe99e8SKumar Sanghvi 737d2fe99e8SKumar Sanghvi if (ep->plen) 738d2fe99e8SKumar Sanghvi memcpy(mpa->private_data + 739d2fe99e8SKumar Sanghvi sizeof(struct mpa_v2_conn_params), pdata, plen); 740d2fe99e8SKumar Sanghvi } else 741cfdda9d7SSteve Wise if (plen) 742cfdda9d7SSteve Wise memcpy(mpa->private_data, pdata, plen); 743cfdda9d7SSteve Wise 744cfdda9d7SSteve Wise /* 745cfdda9d7SSteve Wise * Reference the mpa skb. This ensures the data area 746cfdda9d7SSteve Wise * will remain in memory until the hw acks the tx. 747cfdda9d7SSteve Wise * Function fw4_ack() will deref it. 748cfdda9d7SSteve Wise */ 749cfdda9d7SSteve Wise skb_get(skb); 750cfdda9d7SSteve Wise t4_set_arp_err_handler(skb, NULL, arp_failure_discard); 751cfdda9d7SSteve Wise ep->mpa_skb = skb; 752cfdda9d7SSteve Wise state_set(&ep->com, MPA_REP_SENT); 753cfdda9d7SSteve Wise return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); 754cfdda9d7SSteve Wise } 755cfdda9d7SSteve Wise 756cfdda9d7SSteve Wise static int act_establish(struct c4iw_dev *dev, struct sk_buff *skb) 757cfdda9d7SSteve Wise { 758cfdda9d7SSteve Wise struct c4iw_ep *ep; 759cfdda9d7SSteve Wise struct cpl_act_establish *req = cplhdr(skb); 760cfdda9d7SSteve Wise unsigned int tid = GET_TID(req); 761cfdda9d7SSteve Wise unsigned int atid = GET_TID_TID(ntohl(req->tos_atid)); 762cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 763cfdda9d7SSteve Wise 764cfdda9d7SSteve Wise ep = lookup_atid(t, atid); 765cfdda9d7SSteve Wise 766cfdda9d7SSteve Wise PDBG("%s ep %p tid %u snd_isn %u rcv_isn %u\n", __func__, ep, tid, 767cfdda9d7SSteve Wise be32_to_cpu(req->snd_isn), be32_to_cpu(req->rcv_isn)); 768cfdda9d7SSteve Wise 769cfdda9d7SSteve Wise dst_confirm(ep->dst); 770cfdda9d7SSteve Wise 771cfdda9d7SSteve Wise /* setup the hwtid for this connection */ 772cfdda9d7SSteve Wise ep->hwtid = tid; 773cfdda9d7SSteve Wise cxgb4_insert_tid(t, ep, tid); 774cfdda9d7SSteve Wise 775cfdda9d7SSteve Wise ep->snd_seq = be32_to_cpu(req->snd_isn); 776cfdda9d7SSteve Wise ep->rcv_seq = be32_to_cpu(req->rcv_isn); 777cfdda9d7SSteve Wise 778cfdda9d7SSteve Wise set_emss(ep, ntohs(req->tcp_opt)); 779cfdda9d7SSteve Wise 780cfdda9d7SSteve Wise /* dealloc the atid */ 781cfdda9d7SSteve Wise cxgb4_free_atid(t, atid); 782cfdda9d7SSteve Wise 783cfdda9d7SSteve Wise /* start MPA negotiation */ 784cfdda9d7SSteve Wise send_flowc(ep, NULL); 785d2fe99e8SKumar Sanghvi if (ep->retry_with_mpa_v1) 786d2fe99e8SKumar Sanghvi send_mpa_req(ep, skb, 1); 787d2fe99e8SKumar Sanghvi else 788d2fe99e8SKumar Sanghvi send_mpa_req(ep, skb, mpa_rev); 789cfdda9d7SSteve Wise 790cfdda9d7SSteve Wise return 0; 791cfdda9d7SSteve Wise } 792cfdda9d7SSteve Wise 793cfdda9d7SSteve Wise static void close_complete_upcall(struct c4iw_ep *ep) 794cfdda9d7SSteve Wise { 795cfdda9d7SSteve Wise struct iw_cm_event event; 796cfdda9d7SSteve Wise 797cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 798cfdda9d7SSteve Wise memset(&event, 0, sizeof(event)); 799cfdda9d7SSteve Wise event.event = IW_CM_EVENT_CLOSE; 800cfdda9d7SSteve Wise if (ep->com.cm_id) { 801cfdda9d7SSteve Wise PDBG("close complete delivered ep %p cm_id %p tid %u\n", 802cfdda9d7SSteve Wise ep, ep->com.cm_id, ep->hwtid); 803cfdda9d7SSteve Wise ep->com.cm_id->event_handler(ep->com.cm_id, &event); 804cfdda9d7SSteve Wise ep->com.cm_id->rem_ref(ep->com.cm_id); 805cfdda9d7SSteve Wise ep->com.cm_id = NULL; 806cfdda9d7SSteve Wise ep->com.qp = NULL; 807cfdda9d7SSteve Wise } 808cfdda9d7SSteve Wise } 809cfdda9d7SSteve Wise 810cfdda9d7SSteve Wise static int abort_connection(struct c4iw_ep *ep, struct sk_buff *skb, gfp_t gfp) 811cfdda9d7SSteve Wise { 812cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 813cfdda9d7SSteve Wise close_complete_upcall(ep); 814cfdda9d7SSteve Wise state_set(&ep->com, ABORTING); 815cfdda9d7SSteve Wise return send_abort(ep, skb, gfp); 816cfdda9d7SSteve Wise } 817cfdda9d7SSteve Wise 818cfdda9d7SSteve Wise static void peer_close_upcall(struct c4iw_ep *ep) 819cfdda9d7SSteve Wise { 820cfdda9d7SSteve Wise struct iw_cm_event event; 821cfdda9d7SSteve Wise 822cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 823cfdda9d7SSteve Wise memset(&event, 0, sizeof(event)); 824cfdda9d7SSteve Wise event.event = IW_CM_EVENT_DISCONNECT; 825cfdda9d7SSteve Wise if (ep->com.cm_id) { 826cfdda9d7SSteve Wise PDBG("peer close delivered ep %p cm_id %p tid %u\n", 827cfdda9d7SSteve Wise ep, ep->com.cm_id, ep->hwtid); 828cfdda9d7SSteve Wise ep->com.cm_id->event_handler(ep->com.cm_id, &event); 829cfdda9d7SSteve Wise } 830cfdda9d7SSteve Wise } 831cfdda9d7SSteve Wise 832cfdda9d7SSteve Wise static void peer_abort_upcall(struct c4iw_ep *ep) 833cfdda9d7SSteve Wise { 834cfdda9d7SSteve Wise struct iw_cm_event event; 835cfdda9d7SSteve Wise 836cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 837cfdda9d7SSteve Wise memset(&event, 0, sizeof(event)); 838cfdda9d7SSteve Wise event.event = IW_CM_EVENT_CLOSE; 839cfdda9d7SSteve Wise event.status = -ECONNRESET; 840cfdda9d7SSteve Wise if (ep->com.cm_id) { 841cfdda9d7SSteve Wise PDBG("abort delivered ep %p cm_id %p tid %u\n", ep, 842cfdda9d7SSteve Wise ep->com.cm_id, ep->hwtid); 843cfdda9d7SSteve Wise ep->com.cm_id->event_handler(ep->com.cm_id, &event); 844cfdda9d7SSteve Wise ep->com.cm_id->rem_ref(ep->com.cm_id); 845cfdda9d7SSteve Wise ep->com.cm_id = NULL; 846cfdda9d7SSteve Wise ep->com.qp = NULL; 847cfdda9d7SSteve Wise } 848cfdda9d7SSteve Wise } 849cfdda9d7SSteve Wise 850cfdda9d7SSteve Wise static void connect_reply_upcall(struct c4iw_ep *ep, int status) 851cfdda9d7SSteve Wise { 852cfdda9d7SSteve Wise struct iw_cm_event event; 853cfdda9d7SSteve Wise 854cfdda9d7SSteve Wise PDBG("%s ep %p tid %u status %d\n", __func__, ep, ep->hwtid, status); 855cfdda9d7SSteve Wise memset(&event, 0, sizeof(event)); 856cfdda9d7SSteve Wise event.event = IW_CM_EVENT_CONNECT_REPLY; 857cfdda9d7SSteve Wise event.status = status; 858cfdda9d7SSteve Wise event.local_addr = ep->com.local_addr; 859cfdda9d7SSteve Wise event.remote_addr = ep->com.remote_addr; 860cfdda9d7SSteve Wise 861cfdda9d7SSteve Wise if ((status == 0) || (status == -ECONNREFUSED)) { 862d2fe99e8SKumar Sanghvi if (!ep->tried_with_mpa_v1) { 863d2fe99e8SKumar Sanghvi /* this means MPA_v2 is used */ 864d2fe99e8SKumar Sanghvi event.private_data_len = ep->plen - 865d2fe99e8SKumar Sanghvi sizeof(struct mpa_v2_conn_params); 866d2fe99e8SKumar Sanghvi event.private_data = ep->mpa_pkt + 867d2fe99e8SKumar Sanghvi sizeof(struct mpa_message) + 868d2fe99e8SKumar Sanghvi sizeof(struct mpa_v2_conn_params); 869d2fe99e8SKumar Sanghvi } else { 870d2fe99e8SKumar Sanghvi /* this means MPA_v1 is used */ 871cfdda9d7SSteve Wise event.private_data_len = ep->plen; 872d2fe99e8SKumar Sanghvi event.private_data = ep->mpa_pkt + 873d2fe99e8SKumar Sanghvi sizeof(struct mpa_message); 874d2fe99e8SKumar Sanghvi } 875cfdda9d7SSteve Wise } 87685963e4cSRoland Dreier 877cfdda9d7SSteve Wise PDBG("%s ep %p tid %u status %d\n", __func__, ep, 878cfdda9d7SSteve Wise ep->hwtid, status); 879cfdda9d7SSteve Wise ep->com.cm_id->event_handler(ep->com.cm_id, &event); 88085963e4cSRoland Dreier 881cfdda9d7SSteve Wise if (status < 0) { 882cfdda9d7SSteve Wise ep->com.cm_id->rem_ref(ep->com.cm_id); 883cfdda9d7SSteve Wise ep->com.cm_id = NULL; 884cfdda9d7SSteve Wise ep->com.qp = NULL; 885cfdda9d7SSteve Wise } 886cfdda9d7SSteve Wise } 887cfdda9d7SSteve Wise 888cfdda9d7SSteve Wise static void connect_request_upcall(struct c4iw_ep *ep) 889cfdda9d7SSteve Wise { 890cfdda9d7SSteve Wise struct iw_cm_event event; 891cfdda9d7SSteve Wise 892cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 893cfdda9d7SSteve Wise memset(&event, 0, sizeof(event)); 894cfdda9d7SSteve Wise event.event = IW_CM_EVENT_CONNECT_REQUEST; 895cfdda9d7SSteve Wise event.local_addr = ep->com.local_addr; 896cfdda9d7SSteve Wise event.remote_addr = ep->com.remote_addr; 897d2fe99e8SKumar Sanghvi event.provider_data = ep; 898d2fe99e8SKumar Sanghvi if (!ep->tried_with_mpa_v1) { 899d2fe99e8SKumar Sanghvi /* this means MPA_v2 is used */ 900d2fe99e8SKumar Sanghvi event.ord = ep->ord; 901d2fe99e8SKumar Sanghvi event.ird = ep->ird; 902d2fe99e8SKumar Sanghvi event.private_data_len = ep->plen - 903d2fe99e8SKumar Sanghvi sizeof(struct mpa_v2_conn_params); 904d2fe99e8SKumar Sanghvi event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) + 905d2fe99e8SKumar Sanghvi sizeof(struct mpa_v2_conn_params); 906d2fe99e8SKumar Sanghvi } else { 907d2fe99e8SKumar Sanghvi /* this means MPA_v1 is used. Send max supported */ 908d2fe99e8SKumar Sanghvi event.ord = c4iw_max_read_depth; 909d2fe99e8SKumar Sanghvi event.ird = c4iw_max_read_depth; 910cfdda9d7SSteve Wise event.private_data_len = ep->plen; 911cfdda9d7SSteve Wise event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); 912d2fe99e8SKumar Sanghvi } 913cfdda9d7SSteve Wise if (state_read(&ep->parent_ep->com) != DEAD) { 914cfdda9d7SSteve Wise c4iw_get_ep(&ep->com); 915cfdda9d7SSteve Wise ep->parent_ep->com.cm_id->event_handler( 916cfdda9d7SSteve Wise ep->parent_ep->com.cm_id, 917cfdda9d7SSteve Wise &event); 918cfdda9d7SSteve Wise } 919cfdda9d7SSteve Wise c4iw_put_ep(&ep->parent_ep->com); 920cfdda9d7SSteve Wise ep->parent_ep = NULL; 921cfdda9d7SSteve Wise } 922cfdda9d7SSteve Wise 923cfdda9d7SSteve Wise static void established_upcall(struct c4iw_ep *ep) 924cfdda9d7SSteve Wise { 925cfdda9d7SSteve Wise struct iw_cm_event event; 926cfdda9d7SSteve Wise 927cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 928cfdda9d7SSteve Wise memset(&event, 0, sizeof(event)); 929cfdda9d7SSteve Wise event.event = IW_CM_EVENT_ESTABLISHED; 930d2fe99e8SKumar Sanghvi event.ird = ep->ird; 931d2fe99e8SKumar Sanghvi event.ord = ep->ord; 932cfdda9d7SSteve Wise if (ep->com.cm_id) { 933cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 934cfdda9d7SSteve Wise ep->com.cm_id->event_handler(ep->com.cm_id, &event); 935cfdda9d7SSteve Wise } 936cfdda9d7SSteve Wise } 937cfdda9d7SSteve Wise 938cfdda9d7SSteve Wise static int update_rx_credits(struct c4iw_ep *ep, u32 credits) 939cfdda9d7SSteve Wise { 940cfdda9d7SSteve Wise struct cpl_rx_data_ack *req; 941cfdda9d7SSteve Wise struct sk_buff *skb; 942cfdda9d7SSteve Wise int wrlen = roundup(sizeof *req, 16); 943cfdda9d7SSteve Wise 944cfdda9d7SSteve Wise PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits); 945cfdda9d7SSteve Wise skb = get_skb(NULL, wrlen, GFP_KERNEL); 946cfdda9d7SSteve Wise if (!skb) { 947cfdda9d7SSteve Wise printk(KERN_ERR MOD "update_rx_credits - cannot alloc skb!\n"); 948cfdda9d7SSteve Wise return 0; 949cfdda9d7SSteve Wise } 950cfdda9d7SSteve Wise 951cfdda9d7SSteve Wise req = (struct cpl_rx_data_ack *) skb_put(skb, wrlen); 952cfdda9d7SSteve Wise memset(req, 0, wrlen); 953cfdda9d7SSteve Wise INIT_TP_WR(req, ep->hwtid); 954cfdda9d7SSteve Wise OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_RX_DATA_ACK, 955cfdda9d7SSteve Wise ep->hwtid)); 956ba6d3925SSteve Wise req->credit_dack = cpu_to_be32(credits | RX_FORCE_ACK(1) | 957ba6d3925SSteve Wise F_RX_DACK_CHANGE | 958ba6d3925SSteve Wise V_RX_DACK_MODE(dack_mode)); 959d4f1a5c6SSteve Wise set_wr_txq(skb, CPL_PRIORITY_ACK, ep->ctrlq_idx); 960cfdda9d7SSteve Wise c4iw_ofld_send(&ep->com.dev->rdev, skb); 961cfdda9d7SSteve Wise return credits; 962cfdda9d7SSteve Wise } 963cfdda9d7SSteve Wise 964cfdda9d7SSteve Wise static void process_mpa_reply(struct c4iw_ep *ep, struct sk_buff *skb) 965cfdda9d7SSteve Wise { 966cfdda9d7SSteve Wise struct mpa_message *mpa; 967d2fe99e8SKumar Sanghvi struct mpa_v2_conn_params *mpa_v2_params; 968cfdda9d7SSteve Wise u16 plen; 969d2fe99e8SKumar Sanghvi u16 resp_ird, resp_ord; 970d2fe99e8SKumar Sanghvi u8 rtr_mismatch = 0, insuff_ird = 0; 971cfdda9d7SSteve Wise struct c4iw_qp_attributes attrs; 972cfdda9d7SSteve Wise enum c4iw_qp_attr_mask mask; 973cfdda9d7SSteve Wise int err; 974cfdda9d7SSteve Wise 975cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 976cfdda9d7SSteve Wise 977cfdda9d7SSteve Wise /* 978cfdda9d7SSteve Wise * Stop mpa timer. If it expired, then the state has 979cfdda9d7SSteve Wise * changed and we bail since ep_timeout already aborted 980cfdda9d7SSteve Wise * the connection. 981cfdda9d7SSteve Wise */ 982cfdda9d7SSteve Wise stop_ep_timer(ep); 983cfdda9d7SSteve Wise if (state_read(&ep->com) != MPA_REQ_SENT) 984cfdda9d7SSteve Wise return; 985cfdda9d7SSteve Wise 986cfdda9d7SSteve Wise /* 987cfdda9d7SSteve Wise * If we get more than the supported amount of private data 988cfdda9d7SSteve Wise * then we must fail this connection. 989cfdda9d7SSteve Wise */ 990cfdda9d7SSteve Wise if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) { 991cfdda9d7SSteve Wise err = -EINVAL; 992cfdda9d7SSteve Wise goto err; 993cfdda9d7SSteve Wise } 994cfdda9d7SSteve Wise 995cfdda9d7SSteve Wise /* 996cfdda9d7SSteve Wise * copy the new data into our accumulation buffer. 997cfdda9d7SSteve Wise */ 998cfdda9d7SSteve Wise skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]), 999cfdda9d7SSteve Wise skb->len); 1000cfdda9d7SSteve Wise ep->mpa_pkt_len += skb->len; 1001cfdda9d7SSteve Wise 1002cfdda9d7SSteve Wise /* 1003cfdda9d7SSteve Wise * if we don't even have the mpa message, then bail. 1004cfdda9d7SSteve Wise */ 1005cfdda9d7SSteve Wise if (ep->mpa_pkt_len < sizeof(*mpa)) 1006cfdda9d7SSteve Wise return; 1007cfdda9d7SSteve Wise mpa = (struct mpa_message *) ep->mpa_pkt; 1008cfdda9d7SSteve Wise 1009cfdda9d7SSteve Wise /* Validate MPA header. */ 1010d2fe99e8SKumar Sanghvi if (mpa->revision > mpa_rev) { 1011d2fe99e8SKumar Sanghvi printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d," 1012d2fe99e8SKumar Sanghvi " Received = %d\n", __func__, mpa_rev, mpa->revision); 1013cfdda9d7SSteve Wise err = -EPROTO; 1014cfdda9d7SSteve Wise goto err; 1015cfdda9d7SSteve Wise } 1016cfdda9d7SSteve Wise if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) { 1017cfdda9d7SSteve Wise err = -EPROTO; 1018cfdda9d7SSteve Wise goto err; 1019cfdda9d7SSteve Wise } 1020cfdda9d7SSteve Wise 1021cfdda9d7SSteve Wise plen = ntohs(mpa->private_data_size); 1022cfdda9d7SSteve Wise 1023cfdda9d7SSteve Wise /* 1024cfdda9d7SSteve Wise * Fail if there's too much private data. 1025cfdda9d7SSteve Wise */ 1026cfdda9d7SSteve Wise if (plen > MPA_MAX_PRIVATE_DATA) { 1027cfdda9d7SSteve Wise err = -EPROTO; 1028cfdda9d7SSteve Wise goto err; 1029cfdda9d7SSteve Wise } 1030cfdda9d7SSteve Wise 1031cfdda9d7SSteve Wise /* 1032cfdda9d7SSteve Wise * If plen does not account for pkt size 1033cfdda9d7SSteve Wise */ 1034cfdda9d7SSteve Wise if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { 1035cfdda9d7SSteve Wise err = -EPROTO; 1036cfdda9d7SSteve Wise goto err; 1037cfdda9d7SSteve Wise } 1038cfdda9d7SSteve Wise 1039cfdda9d7SSteve Wise ep->plen = (u8) plen; 1040cfdda9d7SSteve Wise 1041cfdda9d7SSteve Wise /* 1042cfdda9d7SSteve Wise * If we don't have all the pdata yet, then bail. 1043cfdda9d7SSteve Wise * We'll continue process when more data arrives. 1044cfdda9d7SSteve Wise */ 1045cfdda9d7SSteve Wise if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) 1046cfdda9d7SSteve Wise return; 1047cfdda9d7SSteve Wise 1048cfdda9d7SSteve Wise if (mpa->flags & MPA_REJECT) { 1049cfdda9d7SSteve Wise err = -ECONNREFUSED; 1050cfdda9d7SSteve Wise goto err; 1051cfdda9d7SSteve Wise } 1052cfdda9d7SSteve Wise 1053cfdda9d7SSteve Wise /* 1054cfdda9d7SSteve Wise * If we get here we have accumulated the entire mpa 1055cfdda9d7SSteve Wise * start reply message including private data. And 1056cfdda9d7SSteve Wise * the MPA header is valid. 1057cfdda9d7SSteve Wise */ 1058cfdda9d7SSteve Wise state_set(&ep->com, FPDU_MODE); 1059cfdda9d7SSteve Wise ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 1060cfdda9d7SSteve Wise ep->mpa_attr.recv_marker_enabled = markers_enabled; 1061cfdda9d7SSteve Wise ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 1062d2fe99e8SKumar Sanghvi ep->mpa_attr.version = mpa->revision; 1063d2fe99e8SKumar Sanghvi ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 1064d2fe99e8SKumar Sanghvi 1065d2fe99e8SKumar Sanghvi if (mpa->revision == 2) { 1066d2fe99e8SKumar Sanghvi ep->mpa_attr.enhanced_rdma_conn = 1067d2fe99e8SKumar Sanghvi mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; 1068d2fe99e8SKumar Sanghvi if (ep->mpa_attr.enhanced_rdma_conn) { 1069d2fe99e8SKumar Sanghvi mpa_v2_params = (struct mpa_v2_conn_params *) 1070d2fe99e8SKumar Sanghvi (ep->mpa_pkt + sizeof(*mpa)); 1071d2fe99e8SKumar Sanghvi resp_ird = ntohs(mpa_v2_params->ird) & 1072d2fe99e8SKumar Sanghvi MPA_V2_IRD_ORD_MASK; 1073d2fe99e8SKumar Sanghvi resp_ord = ntohs(mpa_v2_params->ord) & 1074d2fe99e8SKumar Sanghvi MPA_V2_IRD_ORD_MASK; 1075d2fe99e8SKumar Sanghvi 1076d2fe99e8SKumar Sanghvi /* 1077d2fe99e8SKumar Sanghvi * This is a double-check. Ideally, below checks are 1078d2fe99e8SKumar Sanghvi * not required since ird/ord stuff has been taken 1079d2fe99e8SKumar Sanghvi * care of in c4iw_accept_cr 1080d2fe99e8SKumar Sanghvi */ 1081d2fe99e8SKumar Sanghvi if ((ep->ird < resp_ord) || (ep->ord > resp_ird)) { 1082d2fe99e8SKumar Sanghvi err = -ENOMEM; 1083d2fe99e8SKumar Sanghvi ep->ird = resp_ord; 1084d2fe99e8SKumar Sanghvi ep->ord = resp_ird; 1085d2fe99e8SKumar Sanghvi insuff_ird = 1; 1086d2fe99e8SKumar Sanghvi } 1087d2fe99e8SKumar Sanghvi 1088d2fe99e8SKumar Sanghvi if (ntohs(mpa_v2_params->ird) & 1089d2fe99e8SKumar Sanghvi MPA_V2_PEER2PEER_MODEL) { 1090d2fe99e8SKumar Sanghvi if (ntohs(mpa_v2_params->ord) & 1091d2fe99e8SKumar Sanghvi MPA_V2_RDMA_WRITE_RTR) 1092d2fe99e8SKumar Sanghvi ep->mpa_attr.p2p_type = 1093d2fe99e8SKumar Sanghvi FW_RI_INIT_P2PTYPE_RDMA_WRITE; 1094d2fe99e8SKumar Sanghvi else if (ntohs(mpa_v2_params->ord) & 1095d2fe99e8SKumar Sanghvi MPA_V2_RDMA_READ_RTR) 1096d2fe99e8SKumar Sanghvi ep->mpa_attr.p2p_type = 1097d2fe99e8SKumar Sanghvi FW_RI_INIT_P2PTYPE_READ_REQ; 1098d2fe99e8SKumar Sanghvi } 1099d2fe99e8SKumar Sanghvi } 1100d2fe99e8SKumar Sanghvi } else if (mpa->revision == 1) 1101d2fe99e8SKumar Sanghvi if (peer2peer) 1102d2fe99e8SKumar Sanghvi ep->mpa_attr.p2p_type = p2p_type; 1103d2fe99e8SKumar Sanghvi 1104cfdda9d7SSteve Wise PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " 1105d2fe99e8SKumar Sanghvi "xmit_marker_enabled=%d, version=%d p2p_type=%d local-p2p_type = " 1106d2fe99e8SKumar Sanghvi "%d\n", __func__, ep->mpa_attr.crc_enabled, 1107d2fe99e8SKumar Sanghvi ep->mpa_attr.recv_marker_enabled, 1108d2fe99e8SKumar Sanghvi ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, 1109d2fe99e8SKumar Sanghvi ep->mpa_attr.p2p_type, p2p_type); 1110d2fe99e8SKumar Sanghvi 1111d2fe99e8SKumar Sanghvi /* 1112d2fe99e8SKumar Sanghvi * If responder's RTR does not match with that of initiator, assign 1113d2fe99e8SKumar Sanghvi * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not 1114d2fe99e8SKumar Sanghvi * generated when moving QP to RTS state. 1115d2fe99e8SKumar Sanghvi * A TERM message will be sent after QP has moved to RTS state 1116d2fe99e8SKumar Sanghvi */ 1117d2fe99e8SKumar Sanghvi if ((ep->mpa_attr.version == 2) && 1118d2fe99e8SKumar Sanghvi (ep->mpa_attr.p2p_type != p2p_type)) { 1119d2fe99e8SKumar Sanghvi ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 1120d2fe99e8SKumar Sanghvi rtr_mismatch = 1; 1121d2fe99e8SKumar Sanghvi } 1122cfdda9d7SSteve Wise 1123cfdda9d7SSteve Wise attrs.mpa_attr = ep->mpa_attr; 1124cfdda9d7SSteve Wise attrs.max_ird = ep->ird; 1125cfdda9d7SSteve Wise attrs.max_ord = ep->ord; 1126cfdda9d7SSteve Wise attrs.llp_stream_handle = ep; 1127cfdda9d7SSteve Wise attrs.next_state = C4IW_QP_STATE_RTS; 1128cfdda9d7SSteve Wise 1129cfdda9d7SSteve Wise mask = C4IW_QP_ATTR_NEXT_STATE | 1130cfdda9d7SSteve Wise C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR | 1131cfdda9d7SSteve Wise C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD; 1132cfdda9d7SSteve Wise 1133cfdda9d7SSteve Wise /* bind QP and TID with INIT_WR */ 1134cfdda9d7SSteve Wise err = c4iw_modify_qp(ep->com.qp->rhp, 1135cfdda9d7SSteve Wise ep->com.qp, mask, &attrs, 1); 1136cfdda9d7SSteve Wise if (err) 1137cfdda9d7SSteve Wise goto err; 1138d2fe99e8SKumar Sanghvi 1139d2fe99e8SKumar Sanghvi /* 1140d2fe99e8SKumar Sanghvi * If responder's RTR requirement did not match with what initiator 1141d2fe99e8SKumar Sanghvi * supports, generate TERM message 1142d2fe99e8SKumar Sanghvi */ 1143d2fe99e8SKumar Sanghvi if (rtr_mismatch) { 1144d2fe99e8SKumar Sanghvi printk(KERN_ERR "%s: RTR mismatch, sending TERM\n", __func__); 1145d2fe99e8SKumar Sanghvi attrs.layer_etype = LAYER_MPA | DDP_LLP; 1146d2fe99e8SKumar Sanghvi attrs.ecode = MPA_NOMATCH_RTR; 1147d2fe99e8SKumar Sanghvi attrs.next_state = C4IW_QP_STATE_TERMINATE; 1148d2fe99e8SKumar Sanghvi err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 1149d2fe99e8SKumar Sanghvi C4IW_QP_ATTR_NEXT_STATE, &attrs, 0); 1150d2fe99e8SKumar Sanghvi err = -ENOMEM; 1151d2fe99e8SKumar Sanghvi goto out; 1152d2fe99e8SKumar Sanghvi } 1153d2fe99e8SKumar Sanghvi 1154d2fe99e8SKumar Sanghvi /* 1155d2fe99e8SKumar Sanghvi * Generate TERM if initiator IRD is not sufficient for responder 1156d2fe99e8SKumar Sanghvi * provided ORD. Currently, we do the same behaviour even when 1157d2fe99e8SKumar Sanghvi * responder provided IRD is also not sufficient as regards to 1158d2fe99e8SKumar Sanghvi * initiator ORD. 1159d2fe99e8SKumar Sanghvi */ 1160d2fe99e8SKumar Sanghvi if (insuff_ird) { 1161d2fe99e8SKumar Sanghvi printk(KERN_ERR "%s: Insufficient IRD, sending TERM\n", 1162d2fe99e8SKumar Sanghvi __func__); 1163d2fe99e8SKumar Sanghvi attrs.layer_etype = LAYER_MPA | DDP_LLP; 1164d2fe99e8SKumar Sanghvi attrs.ecode = MPA_INSUFF_IRD; 1165d2fe99e8SKumar Sanghvi attrs.next_state = C4IW_QP_STATE_TERMINATE; 1166d2fe99e8SKumar Sanghvi err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 1167d2fe99e8SKumar Sanghvi C4IW_QP_ATTR_NEXT_STATE, &attrs, 0); 1168d2fe99e8SKumar Sanghvi err = -ENOMEM; 1169d2fe99e8SKumar Sanghvi goto out; 1170d2fe99e8SKumar Sanghvi } 1171cfdda9d7SSteve Wise goto out; 1172cfdda9d7SSteve Wise err: 1173b21ef16aSSteve Wise state_set(&ep->com, ABORTING); 1174b21ef16aSSteve Wise send_abort(ep, skb, GFP_KERNEL); 1175cfdda9d7SSteve Wise out: 1176cfdda9d7SSteve Wise connect_reply_upcall(ep, err); 1177cfdda9d7SSteve Wise return; 1178cfdda9d7SSteve Wise } 1179cfdda9d7SSteve Wise 1180cfdda9d7SSteve Wise static void process_mpa_request(struct c4iw_ep *ep, struct sk_buff *skb) 1181cfdda9d7SSteve Wise { 1182cfdda9d7SSteve Wise struct mpa_message *mpa; 1183d2fe99e8SKumar Sanghvi struct mpa_v2_conn_params *mpa_v2_params; 1184cfdda9d7SSteve Wise u16 plen; 1185cfdda9d7SSteve Wise 1186cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 1187cfdda9d7SSteve Wise 1188cfdda9d7SSteve Wise if (state_read(&ep->com) != MPA_REQ_WAIT) 1189cfdda9d7SSteve Wise return; 1190cfdda9d7SSteve Wise 1191cfdda9d7SSteve Wise /* 1192cfdda9d7SSteve Wise * If we get more than the supported amount of private data 1193cfdda9d7SSteve Wise * then we must fail this connection. 1194cfdda9d7SSteve Wise */ 1195cfdda9d7SSteve Wise if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) { 1196cfdda9d7SSteve Wise stop_ep_timer(ep); 1197cfdda9d7SSteve Wise abort_connection(ep, skb, GFP_KERNEL); 1198cfdda9d7SSteve Wise return; 1199cfdda9d7SSteve Wise } 1200cfdda9d7SSteve Wise 1201cfdda9d7SSteve Wise PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__); 1202cfdda9d7SSteve Wise 1203cfdda9d7SSteve Wise /* 1204cfdda9d7SSteve Wise * Copy the new data into our accumulation buffer. 1205cfdda9d7SSteve Wise */ 1206cfdda9d7SSteve Wise skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]), 1207cfdda9d7SSteve Wise skb->len); 1208cfdda9d7SSteve Wise ep->mpa_pkt_len += skb->len; 1209cfdda9d7SSteve Wise 1210cfdda9d7SSteve Wise /* 1211cfdda9d7SSteve Wise * If we don't even have the mpa message, then bail. 1212cfdda9d7SSteve Wise * We'll continue process when more data arrives. 1213cfdda9d7SSteve Wise */ 1214cfdda9d7SSteve Wise if (ep->mpa_pkt_len < sizeof(*mpa)) 1215cfdda9d7SSteve Wise return; 1216cfdda9d7SSteve Wise 1217cfdda9d7SSteve Wise PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__); 1218cfdda9d7SSteve Wise stop_ep_timer(ep); 1219cfdda9d7SSteve Wise mpa = (struct mpa_message *) ep->mpa_pkt; 1220cfdda9d7SSteve Wise 1221cfdda9d7SSteve Wise /* 1222cfdda9d7SSteve Wise * Validate MPA Header. 1223cfdda9d7SSteve Wise */ 1224d2fe99e8SKumar Sanghvi if (mpa->revision > mpa_rev) { 1225d2fe99e8SKumar Sanghvi printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d," 1226d2fe99e8SKumar Sanghvi " Received = %d\n", __func__, mpa_rev, mpa->revision); 1227cfdda9d7SSteve Wise abort_connection(ep, skb, GFP_KERNEL); 1228cfdda9d7SSteve Wise return; 1229cfdda9d7SSteve Wise } 1230cfdda9d7SSteve Wise 1231cfdda9d7SSteve Wise if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) { 1232cfdda9d7SSteve Wise abort_connection(ep, skb, GFP_KERNEL); 1233cfdda9d7SSteve Wise return; 1234cfdda9d7SSteve Wise } 1235cfdda9d7SSteve Wise 1236cfdda9d7SSteve Wise plen = ntohs(mpa->private_data_size); 1237cfdda9d7SSteve Wise 1238cfdda9d7SSteve Wise /* 1239cfdda9d7SSteve Wise * Fail if there's too much private data. 1240cfdda9d7SSteve Wise */ 1241cfdda9d7SSteve Wise if (plen > MPA_MAX_PRIVATE_DATA) { 1242cfdda9d7SSteve Wise abort_connection(ep, skb, GFP_KERNEL); 1243cfdda9d7SSteve Wise return; 1244cfdda9d7SSteve Wise } 1245cfdda9d7SSteve Wise 1246cfdda9d7SSteve Wise /* 1247cfdda9d7SSteve Wise * If plen does not account for pkt size 1248cfdda9d7SSteve Wise */ 1249cfdda9d7SSteve Wise if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { 1250cfdda9d7SSteve Wise abort_connection(ep, skb, GFP_KERNEL); 1251cfdda9d7SSteve Wise return; 1252cfdda9d7SSteve Wise } 1253cfdda9d7SSteve Wise ep->plen = (u8) plen; 1254cfdda9d7SSteve Wise 1255cfdda9d7SSteve Wise /* 1256cfdda9d7SSteve Wise * If we don't have all the pdata yet, then bail. 1257cfdda9d7SSteve Wise */ 1258cfdda9d7SSteve Wise if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) 1259cfdda9d7SSteve Wise return; 1260cfdda9d7SSteve Wise 1261cfdda9d7SSteve Wise /* 1262cfdda9d7SSteve Wise * If we get here we have accumulated the entire mpa 1263cfdda9d7SSteve Wise * start reply message including private data. 1264cfdda9d7SSteve Wise */ 1265cfdda9d7SSteve Wise ep->mpa_attr.initiator = 0; 1266cfdda9d7SSteve Wise ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 1267cfdda9d7SSteve Wise ep->mpa_attr.recv_marker_enabled = markers_enabled; 1268cfdda9d7SSteve Wise ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 1269d2fe99e8SKumar Sanghvi ep->mpa_attr.version = mpa->revision; 1270d2fe99e8SKumar Sanghvi if (mpa->revision == 1) 1271d2fe99e8SKumar Sanghvi ep->tried_with_mpa_v1 = 1; 1272d2fe99e8SKumar Sanghvi ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; 1273d2fe99e8SKumar Sanghvi 1274d2fe99e8SKumar Sanghvi if (mpa->revision == 2) { 1275d2fe99e8SKumar Sanghvi ep->mpa_attr.enhanced_rdma_conn = 1276d2fe99e8SKumar Sanghvi mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; 1277d2fe99e8SKumar Sanghvi if (ep->mpa_attr.enhanced_rdma_conn) { 1278d2fe99e8SKumar Sanghvi mpa_v2_params = (struct mpa_v2_conn_params *) 1279d2fe99e8SKumar Sanghvi (ep->mpa_pkt + sizeof(*mpa)); 1280d2fe99e8SKumar Sanghvi ep->ird = ntohs(mpa_v2_params->ird) & 1281d2fe99e8SKumar Sanghvi MPA_V2_IRD_ORD_MASK; 1282d2fe99e8SKumar Sanghvi ep->ord = ntohs(mpa_v2_params->ord) & 1283d2fe99e8SKumar Sanghvi MPA_V2_IRD_ORD_MASK; 1284d2fe99e8SKumar Sanghvi if (ntohs(mpa_v2_params->ird) & MPA_V2_PEER2PEER_MODEL) 1285d2fe99e8SKumar Sanghvi if (peer2peer) { 1286d2fe99e8SKumar Sanghvi if (ntohs(mpa_v2_params->ord) & 1287d2fe99e8SKumar Sanghvi MPA_V2_RDMA_WRITE_RTR) 1288d2fe99e8SKumar Sanghvi ep->mpa_attr.p2p_type = 1289d2fe99e8SKumar Sanghvi FW_RI_INIT_P2PTYPE_RDMA_WRITE; 1290d2fe99e8SKumar Sanghvi else if (ntohs(mpa_v2_params->ord) & 1291d2fe99e8SKumar Sanghvi MPA_V2_RDMA_READ_RTR) 1292d2fe99e8SKumar Sanghvi ep->mpa_attr.p2p_type = 1293d2fe99e8SKumar Sanghvi FW_RI_INIT_P2PTYPE_READ_REQ; 1294d2fe99e8SKumar Sanghvi } 1295d2fe99e8SKumar Sanghvi } 1296d2fe99e8SKumar Sanghvi } else if (mpa->revision == 1) 1297d2fe99e8SKumar Sanghvi if (peer2peer) 1298d2fe99e8SKumar Sanghvi ep->mpa_attr.p2p_type = p2p_type; 1299d2fe99e8SKumar Sanghvi 1300cfdda9d7SSteve Wise PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " 1301cfdda9d7SSteve Wise "xmit_marker_enabled=%d, version=%d p2p_type=%d\n", __func__, 1302cfdda9d7SSteve Wise ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, 1303cfdda9d7SSteve Wise ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, 1304cfdda9d7SSteve Wise ep->mpa_attr.p2p_type); 1305cfdda9d7SSteve Wise 1306cfdda9d7SSteve Wise state_set(&ep->com, MPA_REQ_RCVD); 1307cfdda9d7SSteve Wise 1308cfdda9d7SSteve Wise /* drive upcall */ 1309cfdda9d7SSteve Wise connect_request_upcall(ep); 1310cfdda9d7SSteve Wise return; 1311cfdda9d7SSteve Wise } 1312cfdda9d7SSteve Wise 1313cfdda9d7SSteve Wise static int rx_data(struct c4iw_dev *dev, struct sk_buff *skb) 1314cfdda9d7SSteve Wise { 1315cfdda9d7SSteve Wise struct c4iw_ep *ep; 1316cfdda9d7SSteve Wise struct cpl_rx_data *hdr = cplhdr(skb); 1317cfdda9d7SSteve Wise unsigned int dlen = ntohs(hdr->len); 1318cfdda9d7SSteve Wise unsigned int tid = GET_TID(hdr); 1319cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 1320cfdda9d7SSteve Wise 1321cfdda9d7SSteve Wise ep = lookup_tid(t, tid); 1322cfdda9d7SSteve Wise PDBG("%s ep %p tid %u dlen %u\n", __func__, ep, ep->hwtid, dlen); 1323cfdda9d7SSteve Wise skb_pull(skb, sizeof(*hdr)); 1324cfdda9d7SSteve Wise skb_trim(skb, dlen); 1325cfdda9d7SSteve Wise 1326cfdda9d7SSteve Wise ep->rcv_seq += dlen; 1327cfdda9d7SSteve Wise BUG_ON(ep->rcv_seq != (ntohl(hdr->seq) + dlen)); 1328cfdda9d7SSteve Wise 1329cfdda9d7SSteve Wise /* update RX credits */ 1330cfdda9d7SSteve Wise update_rx_credits(ep, dlen); 1331cfdda9d7SSteve Wise 1332cfdda9d7SSteve Wise switch (state_read(&ep->com)) { 1333cfdda9d7SSteve Wise case MPA_REQ_SENT: 1334cfdda9d7SSteve Wise process_mpa_reply(ep, skb); 1335cfdda9d7SSteve Wise break; 1336cfdda9d7SSteve Wise case MPA_REQ_WAIT: 1337cfdda9d7SSteve Wise process_mpa_request(ep, skb); 1338cfdda9d7SSteve Wise break; 1339cfdda9d7SSteve Wise case MPA_REP_SENT: 1340cfdda9d7SSteve Wise break; 1341cfdda9d7SSteve Wise default: 1342cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s Unexpected streaming data." 1343cfdda9d7SSteve Wise " ep %p state %d tid %u\n", 1344cfdda9d7SSteve Wise __func__, ep, state_read(&ep->com), ep->hwtid); 1345cfdda9d7SSteve Wise 1346cfdda9d7SSteve Wise /* 1347cfdda9d7SSteve Wise * The ep will timeout and inform the ULP of the failure. 1348cfdda9d7SSteve Wise * See ep_timeout(). 1349cfdda9d7SSteve Wise */ 1350cfdda9d7SSteve Wise break; 1351cfdda9d7SSteve Wise } 1352cfdda9d7SSteve Wise return 0; 1353cfdda9d7SSteve Wise } 1354cfdda9d7SSteve Wise 1355cfdda9d7SSteve Wise static int abort_rpl(struct c4iw_dev *dev, struct sk_buff *skb) 1356cfdda9d7SSteve Wise { 1357cfdda9d7SSteve Wise struct c4iw_ep *ep; 1358cfdda9d7SSteve Wise struct cpl_abort_rpl_rss *rpl = cplhdr(skb); 1359cfdda9d7SSteve Wise int release = 0; 1360cfdda9d7SSteve Wise unsigned int tid = GET_TID(rpl); 1361cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 1362cfdda9d7SSteve Wise 1363cfdda9d7SSteve Wise ep = lookup_tid(t, tid); 1364cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 1365cfdda9d7SSteve Wise BUG_ON(!ep); 13662f5b48c3SSteve Wise mutex_lock(&ep->com.mutex); 1367cfdda9d7SSteve Wise switch (ep->com.state) { 1368cfdda9d7SSteve Wise case ABORTING: 1369cfdda9d7SSteve Wise __state_set(&ep->com, DEAD); 1370cfdda9d7SSteve Wise release = 1; 1371cfdda9d7SSteve Wise break; 1372cfdda9d7SSteve Wise default: 1373cfdda9d7SSteve Wise printk(KERN_ERR "%s ep %p state %d\n", 1374cfdda9d7SSteve Wise __func__, ep, ep->com.state); 1375cfdda9d7SSteve Wise break; 1376cfdda9d7SSteve Wise } 13772f5b48c3SSteve Wise mutex_unlock(&ep->com.mutex); 1378cfdda9d7SSteve Wise 1379cfdda9d7SSteve Wise if (release) 1380cfdda9d7SSteve Wise release_ep_resources(ep); 1381cfdda9d7SSteve Wise return 0; 1382cfdda9d7SSteve Wise } 1383cfdda9d7SSteve Wise 1384cfdda9d7SSteve Wise /* 1385cfdda9d7SSteve Wise * Return whether a failed active open has allocated a TID 1386cfdda9d7SSteve Wise */ 1387cfdda9d7SSteve Wise static inline int act_open_has_tid(int status) 1388cfdda9d7SSteve Wise { 1389cfdda9d7SSteve Wise return status != CPL_ERR_TCAM_FULL && status != CPL_ERR_CONN_EXIST && 1390cfdda9d7SSteve Wise status != CPL_ERR_ARP_MISS; 1391cfdda9d7SSteve Wise } 1392cfdda9d7SSteve Wise 1393cfdda9d7SSteve Wise static int act_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb) 1394cfdda9d7SSteve Wise { 1395cfdda9d7SSteve Wise struct c4iw_ep *ep; 1396cfdda9d7SSteve Wise struct cpl_act_open_rpl *rpl = cplhdr(skb); 1397cfdda9d7SSteve Wise unsigned int atid = GET_TID_TID(GET_AOPEN_ATID( 1398cfdda9d7SSteve Wise ntohl(rpl->atid_status))); 1399cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 1400cfdda9d7SSteve Wise int status = GET_AOPEN_STATUS(ntohl(rpl->atid_status)); 1401cfdda9d7SSteve Wise 1402cfdda9d7SSteve Wise ep = lookup_atid(t, atid); 1403cfdda9d7SSteve Wise 1404cfdda9d7SSteve Wise PDBG("%s ep %p atid %u status %u errno %d\n", __func__, ep, atid, 1405cfdda9d7SSteve Wise status, status2errno(status)); 1406cfdda9d7SSteve Wise 1407cfdda9d7SSteve Wise if (status == CPL_ERR_RTX_NEG_ADVICE) { 1408cfdda9d7SSteve Wise printk(KERN_WARNING MOD "Connection problems for atid %u\n", 1409cfdda9d7SSteve Wise atid); 1410cfdda9d7SSteve Wise return 0; 1411cfdda9d7SSteve Wise } 1412cfdda9d7SSteve Wise 1413cfdda9d7SSteve Wise connect_reply_upcall(ep, status2errno(status)); 1414cfdda9d7SSteve Wise state_set(&ep->com, DEAD); 1415cfdda9d7SSteve Wise 1416cfdda9d7SSteve Wise if (status && act_open_has_tid(status)) 1417cfdda9d7SSteve Wise cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, GET_TID(rpl)); 1418cfdda9d7SSteve Wise 1419cfdda9d7SSteve Wise cxgb4_free_atid(t, atid); 1420cfdda9d7SSteve Wise dst_release(ep->dst); 1421cfdda9d7SSteve Wise cxgb4_l2t_release(ep->l2t); 1422cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 1423cfdda9d7SSteve Wise 1424cfdda9d7SSteve Wise return 0; 1425cfdda9d7SSteve Wise } 1426cfdda9d7SSteve Wise 1427cfdda9d7SSteve Wise static int pass_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb) 1428cfdda9d7SSteve Wise { 1429cfdda9d7SSteve Wise struct cpl_pass_open_rpl *rpl = cplhdr(skb); 1430cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 1431cfdda9d7SSteve Wise unsigned int stid = GET_TID(rpl); 1432cfdda9d7SSteve Wise struct c4iw_listen_ep *ep = lookup_stid(t, stid); 1433cfdda9d7SSteve Wise 1434cfdda9d7SSteve Wise if (!ep) { 1435cfdda9d7SSteve Wise printk(KERN_ERR MOD "stid %d lookup failure!\n", stid); 1436cfdda9d7SSteve Wise return 0; 1437cfdda9d7SSteve Wise } 1438cfdda9d7SSteve Wise PDBG("%s ep %p status %d error %d\n", __func__, ep, 1439cfdda9d7SSteve Wise rpl->status, status2errno(rpl->status)); 1440d9594d99SSteve Wise c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status)); 1441cfdda9d7SSteve Wise 1442cfdda9d7SSteve Wise return 0; 1443cfdda9d7SSteve Wise } 1444cfdda9d7SSteve Wise 1445cfdda9d7SSteve Wise static int listen_stop(struct c4iw_listen_ep *ep) 1446cfdda9d7SSteve Wise { 1447cfdda9d7SSteve Wise struct sk_buff *skb; 1448cfdda9d7SSteve Wise struct cpl_close_listsvr_req *req; 1449cfdda9d7SSteve Wise 1450cfdda9d7SSteve Wise PDBG("%s ep %p\n", __func__, ep); 1451cfdda9d7SSteve Wise skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); 1452cfdda9d7SSteve Wise if (!skb) { 1453cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - failed to alloc skb\n", __func__); 1454cfdda9d7SSteve Wise return -ENOMEM; 1455cfdda9d7SSteve Wise } 1456cfdda9d7SSteve Wise req = (struct cpl_close_listsvr_req *) skb_put(skb, sizeof(*req)); 1457cfdda9d7SSteve Wise INIT_TP_WR(req, 0); 1458cfdda9d7SSteve Wise OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_CLOSE_LISTSRV_REQ, 1459cfdda9d7SSteve Wise ep->stid)); 1460cfdda9d7SSteve Wise req->reply_ctrl = cpu_to_be16( 1461cfdda9d7SSteve Wise QUEUENO(ep->com.dev->rdev.lldi.rxq_ids[0])); 1462cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_SETUP, 0); 1463cfdda9d7SSteve Wise return c4iw_ofld_send(&ep->com.dev->rdev, skb); 1464cfdda9d7SSteve Wise } 1465cfdda9d7SSteve Wise 1466cfdda9d7SSteve Wise static int close_listsrv_rpl(struct c4iw_dev *dev, struct sk_buff *skb) 1467cfdda9d7SSteve Wise { 1468cfdda9d7SSteve Wise struct cpl_close_listsvr_rpl *rpl = cplhdr(skb); 1469cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 1470cfdda9d7SSteve Wise unsigned int stid = GET_TID(rpl); 1471cfdda9d7SSteve Wise struct c4iw_listen_ep *ep = lookup_stid(t, stid); 1472cfdda9d7SSteve Wise 1473cfdda9d7SSteve Wise PDBG("%s ep %p\n", __func__, ep); 1474d9594d99SSteve Wise c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status)); 1475cfdda9d7SSteve Wise return 0; 1476cfdda9d7SSteve Wise } 1477cfdda9d7SSteve Wise 1478cfdda9d7SSteve Wise static void accept_cr(struct c4iw_ep *ep, __be32 peer_ip, struct sk_buff *skb, 1479cfdda9d7SSteve Wise struct cpl_pass_accept_req *req) 1480cfdda9d7SSteve Wise { 1481cfdda9d7SSteve Wise struct cpl_pass_accept_rpl *rpl; 1482cfdda9d7SSteve Wise unsigned int mtu_idx; 1483cfdda9d7SSteve Wise u64 opt0; 1484cfdda9d7SSteve Wise u32 opt2; 1485cfdda9d7SSteve Wise int wscale; 1486cfdda9d7SSteve Wise 1487cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 1488cfdda9d7SSteve Wise BUG_ON(skb_cloned(skb)); 1489cfdda9d7SSteve Wise skb_trim(skb, sizeof(*rpl)); 1490cfdda9d7SSteve Wise skb_get(skb); 1491cfdda9d7SSteve Wise cxgb4_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx); 1492cfdda9d7SSteve Wise wscale = compute_wscale(rcv_win); 1493cfdda9d7SSteve Wise opt0 = KEEP_ALIVE(1) | 1494ba6d3925SSteve Wise DELACK(1) | 1495cfdda9d7SSteve Wise WND_SCALE(wscale) | 1496cfdda9d7SSteve Wise MSS_IDX(mtu_idx) | 1497cfdda9d7SSteve Wise L2T_IDX(ep->l2t->idx) | 1498cfdda9d7SSteve Wise TX_CHAN(ep->tx_chan) | 1499cfdda9d7SSteve Wise SMAC_SEL(ep->smac_idx) | 1500cfdda9d7SSteve Wise DSCP(ep->tos) | 1501b48f3b9cSSteve Wise ULP_MODE(ULP_MODE_TCPDDP) | 1502cfdda9d7SSteve Wise RCV_BUFSIZ(rcv_win>>10); 1503cfdda9d7SSteve Wise opt2 = RX_CHANNEL(0) | 1504cfdda9d7SSteve Wise RSS_QUEUE_VALID | RSS_QUEUE(ep->rss_qid); 1505cfdda9d7SSteve Wise 1506cfdda9d7SSteve Wise if (enable_tcp_timestamps && req->tcpopt.tstamp) 1507cfdda9d7SSteve Wise opt2 |= TSTAMPS_EN(1); 1508cfdda9d7SSteve Wise if (enable_tcp_sack && req->tcpopt.sack) 1509cfdda9d7SSteve Wise opt2 |= SACK_EN(1); 1510cfdda9d7SSteve Wise if (wscale && enable_tcp_window_scaling) 1511cfdda9d7SSteve Wise opt2 |= WND_SCALE_EN(1); 1512cfdda9d7SSteve Wise 1513cfdda9d7SSteve Wise rpl = cplhdr(skb); 1514cfdda9d7SSteve Wise INIT_TP_WR(rpl, ep->hwtid); 1515cfdda9d7SSteve Wise OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL, 1516cfdda9d7SSteve Wise ep->hwtid)); 1517cfdda9d7SSteve Wise rpl->opt0 = cpu_to_be64(opt0); 1518cfdda9d7SSteve Wise rpl->opt2 = cpu_to_be32(opt2); 1519d4f1a5c6SSteve Wise set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx); 1520cfdda9d7SSteve Wise c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); 1521cfdda9d7SSteve Wise 1522cfdda9d7SSteve Wise return; 1523cfdda9d7SSteve Wise } 1524cfdda9d7SSteve Wise 1525cfdda9d7SSteve Wise static void reject_cr(struct c4iw_dev *dev, u32 hwtid, __be32 peer_ip, 1526cfdda9d7SSteve Wise struct sk_buff *skb) 1527cfdda9d7SSteve Wise { 1528cfdda9d7SSteve Wise PDBG("%s c4iw_dev %p tid %u peer_ip %x\n", __func__, dev, hwtid, 1529cfdda9d7SSteve Wise peer_ip); 1530cfdda9d7SSteve Wise BUG_ON(skb_cloned(skb)); 1531cfdda9d7SSteve Wise skb_trim(skb, sizeof(struct cpl_tid_release)); 1532cfdda9d7SSteve Wise skb_get(skb); 1533cfdda9d7SSteve Wise release_tid(&dev->rdev, hwtid, skb); 1534cfdda9d7SSteve Wise return; 1535cfdda9d7SSteve Wise } 1536cfdda9d7SSteve Wise 1537cfdda9d7SSteve Wise static void get_4tuple(struct cpl_pass_accept_req *req, 1538cfdda9d7SSteve Wise __be32 *local_ip, __be32 *peer_ip, 1539cfdda9d7SSteve Wise __be16 *local_port, __be16 *peer_port) 1540cfdda9d7SSteve Wise { 1541cfdda9d7SSteve Wise int eth_len = G_ETH_HDR_LEN(be32_to_cpu(req->hdr_len)); 1542cfdda9d7SSteve Wise int ip_len = G_IP_HDR_LEN(be32_to_cpu(req->hdr_len)); 1543cfdda9d7SSteve Wise struct iphdr *ip = (struct iphdr *)((u8 *)(req + 1) + eth_len); 1544cfdda9d7SSteve Wise struct tcphdr *tcp = (struct tcphdr *) 1545cfdda9d7SSteve Wise ((u8 *)(req + 1) + eth_len + ip_len); 1546cfdda9d7SSteve Wise 1547cfdda9d7SSteve Wise PDBG("%s saddr 0x%x daddr 0x%x sport %u dport %u\n", __func__, 1548cfdda9d7SSteve Wise ntohl(ip->saddr), ntohl(ip->daddr), ntohs(tcp->source), 1549cfdda9d7SSteve Wise ntohs(tcp->dest)); 1550cfdda9d7SSteve Wise 1551cfdda9d7SSteve Wise *peer_ip = ip->saddr; 1552cfdda9d7SSteve Wise *local_ip = ip->daddr; 1553cfdda9d7SSteve Wise *peer_port = tcp->source; 1554cfdda9d7SSteve Wise *local_port = tcp->dest; 1555cfdda9d7SSteve Wise 1556cfdda9d7SSteve Wise return; 1557cfdda9d7SSteve Wise } 1558cfdda9d7SSteve Wise 1559cfdda9d7SSteve Wise static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb) 1560cfdda9d7SSteve Wise { 1561cfdda9d7SSteve Wise struct c4iw_ep *child_ep, *parent_ep; 1562cfdda9d7SSteve Wise struct cpl_pass_accept_req *req = cplhdr(skb); 1563cfdda9d7SSteve Wise unsigned int stid = GET_POPEN_TID(ntohl(req->tos_stid)); 1564cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 1565cfdda9d7SSteve Wise unsigned int hwtid = GET_TID(req); 156669cce1d1SDavid S. Miller struct neighbour *neigh; 1567cfdda9d7SSteve Wise struct dst_entry *dst; 1568cfdda9d7SSteve Wise struct l2t_entry *l2t; 1569cfdda9d7SSteve Wise struct rtable *rt; 1570cfdda9d7SSteve Wise __be32 local_ip, peer_ip; 1571cfdda9d7SSteve Wise __be16 local_port, peer_port; 1572cfdda9d7SSteve Wise struct net_device *pdev; 1573cfdda9d7SSteve Wise u32 tx_chan, smac_idx; 1574cfdda9d7SSteve Wise u16 rss_qid; 1575cfdda9d7SSteve Wise u32 mtu; 1576cfdda9d7SSteve Wise int step; 1577d4f1a5c6SSteve Wise int txq_idx, ctrlq_idx; 1578cfdda9d7SSteve Wise 1579cfdda9d7SSteve Wise parent_ep = lookup_stid(t, stid); 1580cfdda9d7SSteve Wise PDBG("%s parent ep %p tid %u\n", __func__, parent_ep, hwtid); 1581cfdda9d7SSteve Wise 1582cfdda9d7SSteve Wise get_4tuple(req, &local_ip, &peer_ip, &local_port, &peer_port); 1583cfdda9d7SSteve Wise 1584cfdda9d7SSteve Wise if (state_read(&parent_ep->com) != LISTEN) { 1585cfdda9d7SSteve Wise printk(KERN_ERR "%s - listening ep not in LISTEN\n", 1586cfdda9d7SSteve Wise __func__); 1587cfdda9d7SSteve Wise goto reject; 1588cfdda9d7SSteve Wise } 1589cfdda9d7SSteve Wise 1590cfdda9d7SSteve Wise /* Find output route */ 1591cfdda9d7SSteve Wise rt = find_route(dev, local_ip, peer_ip, local_port, peer_port, 1592cfdda9d7SSteve Wise GET_POPEN_TOS(ntohl(req->tos_stid))); 1593cfdda9d7SSteve Wise if (!rt) { 1594cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - failed to find dst entry!\n", 1595cfdda9d7SSteve Wise __func__); 1596cfdda9d7SSteve Wise goto reject; 1597cfdda9d7SSteve Wise } 1598d8d1f30bSChangli Gao dst = &rt->dst; 159969cce1d1SDavid S. Miller neigh = dst_get_neighbour(dst); 160069cce1d1SDavid S. Miller if (neigh->dev->flags & IFF_LOOPBACK) { 1601cfdda9d7SSteve Wise pdev = ip_dev_find(&init_net, peer_ip); 1602cfdda9d7SSteve Wise BUG_ON(!pdev); 160369cce1d1SDavid S. Miller l2t = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh, pdev, 0); 1604cfdda9d7SSteve Wise mtu = pdev->mtu; 1605cfdda9d7SSteve Wise tx_chan = cxgb4_port_chan(pdev); 16062c5934bfSSteve Wise smac_idx = (cxgb4_port_viid(pdev) & 0x7F) << 1; 1607cfdda9d7SSteve Wise step = dev->rdev.lldi.ntxq / dev->rdev.lldi.nchan; 1608cfdda9d7SSteve Wise txq_idx = cxgb4_port_idx(pdev) * step; 1609d4f1a5c6SSteve Wise ctrlq_idx = cxgb4_port_idx(pdev); 1610cfdda9d7SSteve Wise step = dev->rdev.lldi.nrxq / dev->rdev.lldi.nchan; 1611cfdda9d7SSteve Wise rss_qid = dev->rdev.lldi.rxq_ids[cxgb4_port_idx(pdev) * step]; 1612cfdda9d7SSteve Wise dev_put(pdev); 1613cfdda9d7SSteve Wise } else { 161469cce1d1SDavid S. Miller l2t = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh, neigh->dev, 0); 1615cfdda9d7SSteve Wise mtu = dst_mtu(dst); 161669cce1d1SDavid S. Miller tx_chan = cxgb4_port_chan(neigh->dev); 161769cce1d1SDavid S. Miller smac_idx = (cxgb4_port_viid(neigh->dev) & 0x7F) << 1; 1618cfdda9d7SSteve Wise step = dev->rdev.lldi.ntxq / dev->rdev.lldi.nchan; 161969cce1d1SDavid S. Miller txq_idx = cxgb4_port_idx(neigh->dev) * step; 162069cce1d1SDavid S. Miller ctrlq_idx = cxgb4_port_idx(neigh->dev); 1621cfdda9d7SSteve Wise step = dev->rdev.lldi.nrxq / dev->rdev.lldi.nchan; 1622cfdda9d7SSteve Wise rss_qid = dev->rdev.lldi.rxq_ids[ 162369cce1d1SDavid S. Miller cxgb4_port_idx(neigh->dev) * step]; 1624cfdda9d7SSteve Wise } 1625cfdda9d7SSteve Wise if (!l2t) { 1626cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n", 1627cfdda9d7SSteve Wise __func__); 1628cfdda9d7SSteve Wise dst_release(dst); 1629cfdda9d7SSteve Wise goto reject; 1630cfdda9d7SSteve Wise } 1631cfdda9d7SSteve Wise 1632cfdda9d7SSteve Wise child_ep = alloc_ep(sizeof(*child_ep), GFP_KERNEL); 1633cfdda9d7SSteve Wise if (!child_ep) { 1634cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - failed to allocate ep entry!\n", 1635cfdda9d7SSteve Wise __func__); 1636cfdda9d7SSteve Wise cxgb4_l2t_release(l2t); 1637cfdda9d7SSteve Wise dst_release(dst); 1638cfdda9d7SSteve Wise goto reject; 1639cfdda9d7SSteve Wise } 1640cfdda9d7SSteve Wise state_set(&child_ep->com, CONNECTING); 1641cfdda9d7SSteve Wise child_ep->com.dev = dev; 1642cfdda9d7SSteve Wise child_ep->com.cm_id = NULL; 1643cfdda9d7SSteve Wise child_ep->com.local_addr.sin_family = PF_INET; 1644cfdda9d7SSteve Wise child_ep->com.local_addr.sin_port = local_port; 1645cfdda9d7SSteve Wise child_ep->com.local_addr.sin_addr.s_addr = local_ip; 1646cfdda9d7SSteve Wise child_ep->com.remote_addr.sin_family = PF_INET; 1647cfdda9d7SSteve Wise child_ep->com.remote_addr.sin_port = peer_port; 1648cfdda9d7SSteve Wise child_ep->com.remote_addr.sin_addr.s_addr = peer_ip; 1649cfdda9d7SSteve Wise c4iw_get_ep(&parent_ep->com); 1650cfdda9d7SSteve Wise child_ep->parent_ep = parent_ep; 1651cfdda9d7SSteve Wise child_ep->tos = GET_POPEN_TOS(ntohl(req->tos_stid)); 1652cfdda9d7SSteve Wise child_ep->l2t = l2t; 1653cfdda9d7SSteve Wise child_ep->dst = dst; 1654cfdda9d7SSteve Wise child_ep->hwtid = hwtid; 1655cfdda9d7SSteve Wise child_ep->tx_chan = tx_chan; 1656cfdda9d7SSteve Wise child_ep->smac_idx = smac_idx; 1657cfdda9d7SSteve Wise child_ep->rss_qid = rss_qid; 1658cfdda9d7SSteve Wise child_ep->mtu = mtu; 1659cfdda9d7SSteve Wise child_ep->txq_idx = txq_idx; 1660d4f1a5c6SSteve Wise child_ep->ctrlq_idx = ctrlq_idx; 1661cfdda9d7SSteve Wise 1662cfdda9d7SSteve Wise PDBG("%s tx_chan %u smac_idx %u rss_qid %u\n", __func__, 1663cfdda9d7SSteve Wise tx_chan, smac_idx, rss_qid); 1664cfdda9d7SSteve Wise 1665cfdda9d7SSteve Wise init_timer(&child_ep->timer); 1666cfdda9d7SSteve Wise cxgb4_insert_tid(t, child_ep, hwtid); 1667cfdda9d7SSteve Wise accept_cr(child_ep, peer_ip, skb, req); 1668cfdda9d7SSteve Wise goto out; 1669cfdda9d7SSteve Wise reject: 1670cfdda9d7SSteve Wise reject_cr(dev, hwtid, peer_ip, skb); 1671cfdda9d7SSteve Wise out: 1672cfdda9d7SSteve Wise return 0; 1673cfdda9d7SSteve Wise } 1674cfdda9d7SSteve Wise 1675cfdda9d7SSteve Wise static int pass_establish(struct c4iw_dev *dev, struct sk_buff *skb) 1676cfdda9d7SSteve Wise { 1677cfdda9d7SSteve Wise struct c4iw_ep *ep; 1678cfdda9d7SSteve Wise struct cpl_pass_establish *req = cplhdr(skb); 1679cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 1680cfdda9d7SSteve Wise unsigned int tid = GET_TID(req); 1681cfdda9d7SSteve Wise 1682cfdda9d7SSteve Wise ep = lookup_tid(t, tid); 1683cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 1684cfdda9d7SSteve Wise ep->snd_seq = be32_to_cpu(req->snd_isn); 1685cfdda9d7SSteve Wise ep->rcv_seq = be32_to_cpu(req->rcv_isn); 1686cfdda9d7SSteve Wise 1687cfdda9d7SSteve Wise set_emss(ep, ntohs(req->tcp_opt)); 1688cfdda9d7SSteve Wise 1689cfdda9d7SSteve Wise dst_confirm(ep->dst); 1690cfdda9d7SSteve Wise state_set(&ep->com, MPA_REQ_WAIT); 1691cfdda9d7SSteve Wise start_ep_timer(ep); 1692cfdda9d7SSteve Wise send_flowc(ep, skb); 1693cfdda9d7SSteve Wise 1694cfdda9d7SSteve Wise return 0; 1695cfdda9d7SSteve Wise } 1696cfdda9d7SSteve Wise 1697cfdda9d7SSteve Wise static int peer_close(struct c4iw_dev *dev, struct sk_buff *skb) 1698cfdda9d7SSteve Wise { 1699cfdda9d7SSteve Wise struct cpl_peer_close *hdr = cplhdr(skb); 1700cfdda9d7SSteve Wise struct c4iw_ep *ep; 1701cfdda9d7SSteve Wise struct c4iw_qp_attributes attrs; 1702cfdda9d7SSteve Wise int disconnect = 1; 1703cfdda9d7SSteve Wise int release = 0; 1704cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 1705cfdda9d7SSteve Wise unsigned int tid = GET_TID(hdr); 17068da7e7a5SSteve Wise int ret; 1707cfdda9d7SSteve Wise 1708cfdda9d7SSteve Wise ep = lookup_tid(t, tid); 1709cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 1710cfdda9d7SSteve Wise dst_confirm(ep->dst); 1711cfdda9d7SSteve Wise 17122f5b48c3SSteve Wise mutex_lock(&ep->com.mutex); 1713cfdda9d7SSteve Wise switch (ep->com.state) { 1714cfdda9d7SSteve Wise case MPA_REQ_WAIT: 1715cfdda9d7SSteve Wise __state_set(&ep->com, CLOSING); 1716cfdda9d7SSteve Wise break; 1717cfdda9d7SSteve Wise case MPA_REQ_SENT: 1718cfdda9d7SSteve Wise __state_set(&ep->com, CLOSING); 1719cfdda9d7SSteve Wise connect_reply_upcall(ep, -ECONNRESET); 1720cfdda9d7SSteve Wise break; 1721cfdda9d7SSteve Wise case MPA_REQ_RCVD: 1722cfdda9d7SSteve Wise 1723cfdda9d7SSteve Wise /* 1724cfdda9d7SSteve Wise * We're gonna mark this puppy DEAD, but keep 1725cfdda9d7SSteve Wise * the reference on it until the ULP accepts or 1726cfdda9d7SSteve Wise * rejects the CR. Also wake up anyone waiting 1727cfdda9d7SSteve Wise * in rdma connection migration (see c4iw_accept_cr()). 1728cfdda9d7SSteve Wise */ 1729cfdda9d7SSteve Wise __state_set(&ep->com, CLOSING); 1730cfdda9d7SSteve Wise PDBG("waking up ep %p tid %u\n", ep, ep->hwtid); 1731d9594d99SSteve Wise c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); 1732cfdda9d7SSteve Wise break; 1733cfdda9d7SSteve Wise case MPA_REP_SENT: 1734cfdda9d7SSteve Wise __state_set(&ep->com, CLOSING); 1735cfdda9d7SSteve Wise PDBG("waking up ep %p tid %u\n", ep, ep->hwtid); 1736d9594d99SSteve Wise c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); 1737cfdda9d7SSteve Wise break; 1738cfdda9d7SSteve Wise case FPDU_MODE: 1739ca5a2202SSteve Wise start_ep_timer(ep); 1740cfdda9d7SSteve Wise __state_set(&ep->com, CLOSING); 174130c95c2dSSteve Wise attrs.next_state = C4IW_QP_STATE_CLOSING; 17428da7e7a5SSteve Wise ret = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 174330c95c2dSSteve Wise C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 17448da7e7a5SSteve Wise if (ret != -ECONNRESET) { 1745cfdda9d7SSteve Wise peer_close_upcall(ep); 174630c95c2dSSteve Wise disconnect = 1; 17478da7e7a5SSteve Wise } 1748cfdda9d7SSteve Wise break; 1749cfdda9d7SSteve Wise case ABORTING: 1750cfdda9d7SSteve Wise disconnect = 0; 1751cfdda9d7SSteve Wise break; 1752cfdda9d7SSteve Wise case CLOSING: 1753cfdda9d7SSteve Wise __state_set(&ep->com, MORIBUND); 1754cfdda9d7SSteve Wise disconnect = 0; 1755cfdda9d7SSteve Wise break; 1756cfdda9d7SSteve Wise case MORIBUND: 1757ca5a2202SSteve Wise stop_ep_timer(ep); 1758cfdda9d7SSteve Wise if (ep->com.cm_id && ep->com.qp) { 1759cfdda9d7SSteve Wise attrs.next_state = C4IW_QP_STATE_IDLE; 1760cfdda9d7SSteve Wise c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 1761cfdda9d7SSteve Wise C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 1762cfdda9d7SSteve Wise } 1763cfdda9d7SSteve Wise close_complete_upcall(ep); 1764cfdda9d7SSteve Wise __state_set(&ep->com, DEAD); 1765cfdda9d7SSteve Wise release = 1; 1766cfdda9d7SSteve Wise disconnect = 0; 1767cfdda9d7SSteve Wise break; 1768cfdda9d7SSteve Wise case DEAD: 1769cfdda9d7SSteve Wise disconnect = 0; 1770cfdda9d7SSteve Wise break; 1771cfdda9d7SSteve Wise default: 1772cfdda9d7SSteve Wise BUG_ON(1); 1773cfdda9d7SSteve Wise } 17742f5b48c3SSteve Wise mutex_unlock(&ep->com.mutex); 1775cfdda9d7SSteve Wise if (disconnect) 1776cfdda9d7SSteve Wise c4iw_ep_disconnect(ep, 0, GFP_KERNEL); 1777cfdda9d7SSteve Wise if (release) 1778cfdda9d7SSteve Wise release_ep_resources(ep); 1779cfdda9d7SSteve Wise return 0; 1780cfdda9d7SSteve Wise } 1781cfdda9d7SSteve Wise 1782cfdda9d7SSteve Wise /* 1783cfdda9d7SSteve Wise * Returns whether an ABORT_REQ_RSS message is a negative advice. 1784cfdda9d7SSteve Wise */ 1785cfdda9d7SSteve Wise static int is_neg_adv_abort(unsigned int status) 1786cfdda9d7SSteve Wise { 1787cfdda9d7SSteve Wise return status == CPL_ERR_RTX_NEG_ADVICE || 1788cfdda9d7SSteve Wise status == CPL_ERR_PERSIST_NEG_ADVICE; 1789cfdda9d7SSteve Wise } 1790cfdda9d7SSteve Wise 1791d2fe99e8SKumar Sanghvi static int c4iw_reconnect(struct c4iw_ep *ep) 1792d2fe99e8SKumar Sanghvi { 1793d2fe99e8SKumar Sanghvi int err = 0; 1794d2fe99e8SKumar Sanghvi struct rtable *rt; 1795d2fe99e8SKumar Sanghvi struct net_device *pdev; 1796d2fe99e8SKumar Sanghvi struct neighbour *neigh; 1797d2fe99e8SKumar Sanghvi int step; 1798d2fe99e8SKumar Sanghvi 1799d2fe99e8SKumar Sanghvi PDBG("%s qp %p cm_id %p\n", __func__, ep->com.qp, ep->com.cm_id); 1800d2fe99e8SKumar Sanghvi init_timer(&ep->timer); 1801d2fe99e8SKumar Sanghvi 1802d2fe99e8SKumar Sanghvi /* 1803d2fe99e8SKumar Sanghvi * Allocate an active TID to initiate a TCP connection. 1804d2fe99e8SKumar Sanghvi */ 1805d2fe99e8SKumar Sanghvi ep->atid = cxgb4_alloc_atid(ep->com.dev->rdev.lldi.tids, ep); 1806d2fe99e8SKumar Sanghvi if (ep->atid == -1) { 1807d2fe99e8SKumar Sanghvi printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __func__); 1808d2fe99e8SKumar Sanghvi err = -ENOMEM; 1809d2fe99e8SKumar Sanghvi goto fail2; 1810d2fe99e8SKumar Sanghvi } 1811d2fe99e8SKumar Sanghvi 1812d2fe99e8SKumar Sanghvi /* find a route */ 1813d2fe99e8SKumar Sanghvi rt = find_route(ep->com.dev, 1814d2fe99e8SKumar Sanghvi ep->com.cm_id->local_addr.sin_addr.s_addr, 1815d2fe99e8SKumar Sanghvi ep->com.cm_id->remote_addr.sin_addr.s_addr, 1816d2fe99e8SKumar Sanghvi ep->com.cm_id->local_addr.sin_port, 1817d2fe99e8SKumar Sanghvi ep->com.cm_id->remote_addr.sin_port, 0); 1818d2fe99e8SKumar Sanghvi if (!rt) { 1819d2fe99e8SKumar Sanghvi printk(KERN_ERR MOD "%s - cannot find route.\n", __func__); 1820d2fe99e8SKumar Sanghvi err = -EHOSTUNREACH; 1821d2fe99e8SKumar Sanghvi goto fail3; 1822d2fe99e8SKumar Sanghvi } 1823d2fe99e8SKumar Sanghvi ep->dst = &rt->dst; 1824d2fe99e8SKumar Sanghvi 1825d2fe99e8SKumar Sanghvi neigh = dst_get_neighbour(ep->dst); 1826d2fe99e8SKumar Sanghvi 1827d2fe99e8SKumar Sanghvi /* get a l2t entry */ 1828d2fe99e8SKumar Sanghvi if (neigh->dev->flags & IFF_LOOPBACK) { 1829d2fe99e8SKumar Sanghvi PDBG("%s LOOPBACK\n", __func__); 1830d2fe99e8SKumar Sanghvi pdev = ip_dev_find(&init_net, 1831d2fe99e8SKumar Sanghvi ep->com.cm_id->remote_addr.sin_addr.s_addr); 1832d2fe99e8SKumar Sanghvi ep->l2t = cxgb4_l2t_get(ep->com.dev->rdev.lldi.l2t, 1833d2fe99e8SKumar Sanghvi neigh, pdev, 0); 1834d2fe99e8SKumar Sanghvi ep->mtu = pdev->mtu; 1835d2fe99e8SKumar Sanghvi ep->tx_chan = cxgb4_port_chan(pdev); 1836d2fe99e8SKumar Sanghvi ep->smac_idx = (cxgb4_port_viid(pdev) & 0x7F) << 1; 1837d2fe99e8SKumar Sanghvi step = ep->com.dev->rdev.lldi.ntxq / 1838d2fe99e8SKumar Sanghvi ep->com.dev->rdev.lldi.nchan; 1839d2fe99e8SKumar Sanghvi ep->txq_idx = cxgb4_port_idx(pdev) * step; 1840d2fe99e8SKumar Sanghvi step = ep->com.dev->rdev.lldi.nrxq / 1841d2fe99e8SKumar Sanghvi ep->com.dev->rdev.lldi.nchan; 1842d2fe99e8SKumar Sanghvi ep->ctrlq_idx = cxgb4_port_idx(pdev); 1843d2fe99e8SKumar Sanghvi ep->rss_qid = ep->com.dev->rdev.lldi.rxq_ids[ 1844d2fe99e8SKumar Sanghvi cxgb4_port_idx(pdev) * step]; 1845d2fe99e8SKumar Sanghvi dev_put(pdev); 1846d2fe99e8SKumar Sanghvi } else { 1847d2fe99e8SKumar Sanghvi ep->l2t = cxgb4_l2t_get(ep->com.dev->rdev.lldi.l2t, 1848d2fe99e8SKumar Sanghvi neigh, neigh->dev, 0); 1849d2fe99e8SKumar Sanghvi ep->mtu = dst_mtu(ep->dst); 1850d2fe99e8SKumar Sanghvi ep->tx_chan = cxgb4_port_chan(neigh->dev); 1851d2fe99e8SKumar Sanghvi ep->smac_idx = (cxgb4_port_viid(neigh->dev) & 0x7F) << 1; 1852d2fe99e8SKumar Sanghvi step = ep->com.dev->rdev.lldi.ntxq / 1853d2fe99e8SKumar Sanghvi ep->com.dev->rdev.lldi.nchan; 1854d2fe99e8SKumar Sanghvi ep->txq_idx = cxgb4_port_idx(neigh->dev) * step; 1855d2fe99e8SKumar Sanghvi ep->ctrlq_idx = cxgb4_port_idx(neigh->dev); 1856d2fe99e8SKumar Sanghvi step = ep->com.dev->rdev.lldi.nrxq / 1857d2fe99e8SKumar Sanghvi ep->com.dev->rdev.lldi.nchan; 1858d2fe99e8SKumar Sanghvi ep->rss_qid = ep->com.dev->rdev.lldi.rxq_ids[ 1859d2fe99e8SKumar Sanghvi cxgb4_port_idx(neigh->dev) * step]; 1860d2fe99e8SKumar Sanghvi } 1861d2fe99e8SKumar Sanghvi if (!ep->l2t) { 1862d2fe99e8SKumar Sanghvi printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__); 1863d2fe99e8SKumar Sanghvi err = -ENOMEM; 1864d2fe99e8SKumar Sanghvi goto fail4; 1865d2fe99e8SKumar Sanghvi } 1866d2fe99e8SKumar Sanghvi 1867d2fe99e8SKumar Sanghvi PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n", 1868d2fe99e8SKumar Sanghvi __func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid, 1869d2fe99e8SKumar Sanghvi ep->l2t->idx); 1870d2fe99e8SKumar Sanghvi 1871d2fe99e8SKumar Sanghvi state_set(&ep->com, CONNECTING); 1872d2fe99e8SKumar Sanghvi ep->tos = 0; 1873d2fe99e8SKumar Sanghvi 1874d2fe99e8SKumar Sanghvi /* send connect request to rnic */ 1875d2fe99e8SKumar Sanghvi err = send_connect(ep); 1876d2fe99e8SKumar Sanghvi if (!err) 1877d2fe99e8SKumar Sanghvi goto out; 1878d2fe99e8SKumar Sanghvi 1879d2fe99e8SKumar Sanghvi cxgb4_l2t_release(ep->l2t); 1880d2fe99e8SKumar Sanghvi fail4: 1881d2fe99e8SKumar Sanghvi dst_release(ep->dst); 1882d2fe99e8SKumar Sanghvi fail3: 1883d2fe99e8SKumar Sanghvi cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid); 1884d2fe99e8SKumar Sanghvi fail2: 1885d2fe99e8SKumar Sanghvi /* 1886d2fe99e8SKumar Sanghvi * remember to send notification to upper layer. 1887d2fe99e8SKumar Sanghvi * We are in here so the upper layer is not aware that this is 1888d2fe99e8SKumar Sanghvi * re-connect attempt and so, upper layer is still waiting for 1889d2fe99e8SKumar Sanghvi * response of 1st connect request. 1890d2fe99e8SKumar Sanghvi */ 1891d2fe99e8SKumar Sanghvi connect_reply_upcall(ep, -ECONNRESET); 1892d2fe99e8SKumar Sanghvi c4iw_put_ep(&ep->com); 1893d2fe99e8SKumar Sanghvi out: 1894d2fe99e8SKumar Sanghvi return err; 1895d2fe99e8SKumar Sanghvi } 1896d2fe99e8SKumar Sanghvi 1897cfdda9d7SSteve Wise static int peer_abort(struct c4iw_dev *dev, struct sk_buff *skb) 1898cfdda9d7SSteve Wise { 1899cfdda9d7SSteve Wise struct cpl_abort_req_rss *req = cplhdr(skb); 1900cfdda9d7SSteve Wise struct c4iw_ep *ep; 1901cfdda9d7SSteve Wise struct cpl_abort_rpl *rpl; 1902cfdda9d7SSteve Wise struct sk_buff *rpl_skb; 1903cfdda9d7SSteve Wise struct c4iw_qp_attributes attrs; 1904cfdda9d7SSteve Wise int ret; 1905cfdda9d7SSteve Wise int release = 0; 1906cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 1907cfdda9d7SSteve Wise unsigned int tid = GET_TID(req); 1908cfdda9d7SSteve Wise 1909cfdda9d7SSteve Wise ep = lookup_tid(t, tid); 1910cfdda9d7SSteve Wise if (is_neg_adv_abort(req->status)) { 1911cfdda9d7SSteve Wise PDBG("%s neg_adv_abort ep %p tid %u\n", __func__, ep, 1912cfdda9d7SSteve Wise ep->hwtid); 1913cfdda9d7SSteve Wise return 0; 1914cfdda9d7SSteve Wise } 1915cfdda9d7SSteve Wise PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid, 1916cfdda9d7SSteve Wise ep->com.state); 19172f5b48c3SSteve Wise 19182f5b48c3SSteve Wise /* 19192f5b48c3SSteve Wise * Wake up any threads in rdma_init() or rdma_fini(). 1920d2fe99e8SKumar Sanghvi * However, this is not needed if com state is just 1921d2fe99e8SKumar Sanghvi * MPA_REQ_SENT 19222f5b48c3SSteve Wise */ 1923d2fe99e8SKumar Sanghvi if (ep->com.state != MPA_REQ_SENT) 1924d9594d99SSteve Wise c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); 19252f5b48c3SSteve Wise 19262f5b48c3SSteve Wise mutex_lock(&ep->com.mutex); 1927cfdda9d7SSteve Wise switch (ep->com.state) { 1928cfdda9d7SSteve Wise case CONNECTING: 1929cfdda9d7SSteve Wise break; 1930cfdda9d7SSteve Wise case MPA_REQ_WAIT: 1931ca5a2202SSteve Wise stop_ep_timer(ep); 1932cfdda9d7SSteve Wise break; 1933cfdda9d7SSteve Wise case MPA_REQ_SENT: 1934ca5a2202SSteve Wise stop_ep_timer(ep); 1935d2fe99e8SKumar Sanghvi if (mpa_rev == 2 && ep->tried_with_mpa_v1) 1936cfdda9d7SSteve Wise connect_reply_upcall(ep, -ECONNRESET); 1937d2fe99e8SKumar Sanghvi else { 1938d2fe99e8SKumar Sanghvi /* 1939d2fe99e8SKumar Sanghvi * we just don't send notification upwards because we 1940d2fe99e8SKumar Sanghvi * want to retry with mpa_v1 without upper layers even 1941d2fe99e8SKumar Sanghvi * knowing it. 1942d2fe99e8SKumar Sanghvi * 1943d2fe99e8SKumar Sanghvi * do some housekeeping so as to re-initiate the 1944d2fe99e8SKumar Sanghvi * connection 1945d2fe99e8SKumar Sanghvi */ 1946d2fe99e8SKumar Sanghvi PDBG("%s: mpa_rev=%d. Retrying with mpav1\n", __func__, 1947d2fe99e8SKumar Sanghvi mpa_rev); 1948d2fe99e8SKumar Sanghvi ep->retry_with_mpa_v1 = 1; 1949d2fe99e8SKumar Sanghvi } 1950cfdda9d7SSteve Wise break; 1951cfdda9d7SSteve Wise case MPA_REP_SENT: 1952cfdda9d7SSteve Wise break; 1953cfdda9d7SSteve Wise case MPA_REQ_RCVD: 1954cfdda9d7SSteve Wise break; 1955cfdda9d7SSteve Wise case MORIBUND: 1956cfdda9d7SSteve Wise case CLOSING: 1957ca5a2202SSteve Wise stop_ep_timer(ep); 1958cfdda9d7SSteve Wise /*FALLTHROUGH*/ 1959cfdda9d7SSteve Wise case FPDU_MODE: 1960cfdda9d7SSteve Wise if (ep->com.cm_id && ep->com.qp) { 1961cfdda9d7SSteve Wise attrs.next_state = C4IW_QP_STATE_ERROR; 1962cfdda9d7SSteve Wise ret = c4iw_modify_qp(ep->com.qp->rhp, 1963cfdda9d7SSteve Wise ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, 1964cfdda9d7SSteve Wise &attrs, 1); 1965cfdda9d7SSteve Wise if (ret) 1966cfdda9d7SSteve Wise printk(KERN_ERR MOD 1967cfdda9d7SSteve Wise "%s - qp <- error failed!\n", 1968cfdda9d7SSteve Wise __func__); 1969cfdda9d7SSteve Wise } 1970cfdda9d7SSteve Wise peer_abort_upcall(ep); 1971cfdda9d7SSteve Wise break; 1972cfdda9d7SSteve Wise case ABORTING: 1973cfdda9d7SSteve Wise break; 1974cfdda9d7SSteve Wise case DEAD: 1975cfdda9d7SSteve Wise PDBG("%s PEER_ABORT IN DEAD STATE!!!!\n", __func__); 19762f5b48c3SSteve Wise mutex_unlock(&ep->com.mutex); 1977cfdda9d7SSteve Wise return 0; 1978cfdda9d7SSteve Wise default: 1979cfdda9d7SSteve Wise BUG_ON(1); 1980cfdda9d7SSteve Wise break; 1981cfdda9d7SSteve Wise } 1982cfdda9d7SSteve Wise dst_confirm(ep->dst); 1983cfdda9d7SSteve Wise if (ep->com.state != ABORTING) { 1984cfdda9d7SSteve Wise __state_set(&ep->com, DEAD); 1985d2fe99e8SKumar Sanghvi /* we don't release if we want to retry with mpa_v1 */ 1986d2fe99e8SKumar Sanghvi if (!ep->retry_with_mpa_v1) 1987cfdda9d7SSteve Wise release = 1; 1988cfdda9d7SSteve Wise } 19892f5b48c3SSteve Wise mutex_unlock(&ep->com.mutex); 1990cfdda9d7SSteve Wise 1991cfdda9d7SSteve Wise rpl_skb = get_skb(skb, sizeof(*rpl), GFP_KERNEL); 1992cfdda9d7SSteve Wise if (!rpl_skb) { 1993cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - cannot allocate skb!\n", 1994cfdda9d7SSteve Wise __func__); 1995cfdda9d7SSteve Wise release = 1; 1996cfdda9d7SSteve Wise goto out; 1997cfdda9d7SSteve Wise } 1998cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); 1999cfdda9d7SSteve Wise rpl = (struct cpl_abort_rpl *) skb_put(rpl_skb, sizeof(*rpl)); 2000cfdda9d7SSteve Wise INIT_TP_WR(rpl, ep->hwtid); 2001cfdda9d7SSteve Wise OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_RPL, ep->hwtid)); 2002cfdda9d7SSteve Wise rpl->cmd = CPL_ABORT_NO_RST; 2003cfdda9d7SSteve Wise c4iw_ofld_send(&ep->com.dev->rdev, rpl_skb); 2004cfdda9d7SSteve Wise out: 2005cfdda9d7SSteve Wise if (release) 2006cfdda9d7SSteve Wise release_ep_resources(ep); 2007d2fe99e8SKumar Sanghvi 2008d2fe99e8SKumar Sanghvi /* retry with mpa-v1 */ 2009d2fe99e8SKumar Sanghvi if (ep && ep->retry_with_mpa_v1) { 2010d2fe99e8SKumar Sanghvi cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid); 2011d2fe99e8SKumar Sanghvi dst_release(ep->dst); 2012d2fe99e8SKumar Sanghvi cxgb4_l2t_release(ep->l2t); 2013d2fe99e8SKumar Sanghvi c4iw_reconnect(ep); 2014d2fe99e8SKumar Sanghvi } 2015d2fe99e8SKumar Sanghvi 2016cfdda9d7SSteve Wise return 0; 2017cfdda9d7SSteve Wise } 2018cfdda9d7SSteve Wise 2019cfdda9d7SSteve Wise static int close_con_rpl(struct c4iw_dev *dev, struct sk_buff *skb) 2020cfdda9d7SSteve Wise { 2021cfdda9d7SSteve Wise struct c4iw_ep *ep; 2022cfdda9d7SSteve Wise struct c4iw_qp_attributes attrs; 2023cfdda9d7SSteve Wise struct cpl_close_con_rpl *rpl = cplhdr(skb); 2024cfdda9d7SSteve Wise int release = 0; 2025cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 2026cfdda9d7SSteve Wise unsigned int tid = GET_TID(rpl); 2027cfdda9d7SSteve Wise 2028cfdda9d7SSteve Wise ep = lookup_tid(t, tid); 2029cfdda9d7SSteve Wise 2030cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 2031cfdda9d7SSteve Wise BUG_ON(!ep); 2032cfdda9d7SSteve Wise 2033cfdda9d7SSteve Wise /* The cm_id may be null if we failed to connect */ 20342f5b48c3SSteve Wise mutex_lock(&ep->com.mutex); 2035cfdda9d7SSteve Wise switch (ep->com.state) { 2036cfdda9d7SSteve Wise case CLOSING: 2037cfdda9d7SSteve Wise __state_set(&ep->com, MORIBUND); 2038cfdda9d7SSteve Wise break; 2039cfdda9d7SSteve Wise case MORIBUND: 2040ca5a2202SSteve Wise stop_ep_timer(ep); 2041cfdda9d7SSteve Wise if ((ep->com.cm_id) && (ep->com.qp)) { 2042cfdda9d7SSteve Wise attrs.next_state = C4IW_QP_STATE_IDLE; 2043cfdda9d7SSteve Wise c4iw_modify_qp(ep->com.qp->rhp, 2044cfdda9d7SSteve Wise ep->com.qp, 2045cfdda9d7SSteve Wise C4IW_QP_ATTR_NEXT_STATE, 2046cfdda9d7SSteve Wise &attrs, 1); 2047cfdda9d7SSteve Wise } 2048cfdda9d7SSteve Wise close_complete_upcall(ep); 2049cfdda9d7SSteve Wise __state_set(&ep->com, DEAD); 2050cfdda9d7SSteve Wise release = 1; 2051cfdda9d7SSteve Wise break; 2052cfdda9d7SSteve Wise case ABORTING: 2053cfdda9d7SSteve Wise case DEAD: 2054cfdda9d7SSteve Wise break; 2055cfdda9d7SSteve Wise default: 2056cfdda9d7SSteve Wise BUG_ON(1); 2057cfdda9d7SSteve Wise break; 2058cfdda9d7SSteve Wise } 20592f5b48c3SSteve Wise mutex_unlock(&ep->com.mutex); 2060cfdda9d7SSteve Wise if (release) 2061cfdda9d7SSteve Wise release_ep_resources(ep); 2062cfdda9d7SSteve Wise return 0; 2063cfdda9d7SSteve Wise } 2064cfdda9d7SSteve Wise 2065cfdda9d7SSteve Wise static int terminate(struct c4iw_dev *dev, struct sk_buff *skb) 2066cfdda9d7SSteve Wise { 20670e42c1f4SSteve Wise struct cpl_rdma_terminate *rpl = cplhdr(skb); 2068cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 20690e42c1f4SSteve Wise unsigned int tid = GET_TID(rpl); 20700e42c1f4SSteve Wise struct c4iw_ep *ep; 20710e42c1f4SSteve Wise struct c4iw_qp_attributes attrs; 2072cfdda9d7SSteve Wise 2073cfdda9d7SSteve Wise ep = lookup_tid(t, tid); 20740e42c1f4SSteve Wise BUG_ON(!ep); 2075cfdda9d7SSteve Wise 207630c95c2dSSteve Wise if (ep && ep->com.qp) { 20770e42c1f4SSteve Wise printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", tid, 20780e42c1f4SSteve Wise ep->com.qp->wq.sq.qid); 20790e42c1f4SSteve Wise attrs.next_state = C4IW_QP_STATE_TERMINATE; 20800e42c1f4SSteve Wise c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 20810e42c1f4SSteve Wise C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 20820e42c1f4SSteve Wise } else 208330c95c2dSSteve Wise printk(KERN_WARNING MOD "TERM received tid %u no ep/qp\n", tid); 2084cfdda9d7SSteve Wise 2085cfdda9d7SSteve Wise return 0; 2086cfdda9d7SSteve Wise } 2087cfdda9d7SSteve Wise 2088cfdda9d7SSteve Wise /* 2089cfdda9d7SSteve Wise * Upcall from the adapter indicating data has been transmitted. 2090cfdda9d7SSteve Wise * For us its just the single MPA request or reply. We can now free 2091cfdda9d7SSteve Wise * the skb holding the mpa message. 2092cfdda9d7SSteve Wise */ 2093cfdda9d7SSteve Wise static int fw4_ack(struct c4iw_dev *dev, struct sk_buff *skb) 2094cfdda9d7SSteve Wise { 2095cfdda9d7SSteve Wise struct c4iw_ep *ep; 2096cfdda9d7SSteve Wise struct cpl_fw4_ack *hdr = cplhdr(skb); 2097cfdda9d7SSteve Wise u8 credits = hdr->credits; 2098cfdda9d7SSteve Wise unsigned int tid = GET_TID(hdr); 2099cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 2100cfdda9d7SSteve Wise 2101cfdda9d7SSteve Wise 2102cfdda9d7SSteve Wise ep = lookup_tid(t, tid); 2103cfdda9d7SSteve Wise PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits); 2104cfdda9d7SSteve Wise if (credits == 0) { 2105aa1ad260SJoe Perches PDBG("%s 0 credit ack ep %p tid %u state %u\n", 2106cfdda9d7SSteve Wise __func__, ep, ep->hwtid, state_read(&ep->com)); 2107cfdda9d7SSteve Wise return 0; 2108cfdda9d7SSteve Wise } 2109cfdda9d7SSteve Wise 2110cfdda9d7SSteve Wise dst_confirm(ep->dst); 2111cfdda9d7SSteve Wise if (ep->mpa_skb) { 2112cfdda9d7SSteve Wise PDBG("%s last streaming msg ack ep %p tid %u state %u " 2113cfdda9d7SSteve Wise "initiator %u freeing skb\n", __func__, ep, ep->hwtid, 2114cfdda9d7SSteve Wise state_read(&ep->com), ep->mpa_attr.initiator ? 1 : 0); 2115cfdda9d7SSteve Wise kfree_skb(ep->mpa_skb); 2116cfdda9d7SSteve Wise ep->mpa_skb = NULL; 2117cfdda9d7SSteve Wise } 2118cfdda9d7SSteve Wise return 0; 2119cfdda9d7SSteve Wise } 2120cfdda9d7SSteve Wise 2121cfdda9d7SSteve Wise int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) 2122cfdda9d7SSteve Wise { 2123cfdda9d7SSteve Wise int err; 2124cfdda9d7SSteve Wise struct c4iw_ep *ep = to_ep(cm_id); 2125cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 2126cfdda9d7SSteve Wise 2127cfdda9d7SSteve Wise if (state_read(&ep->com) == DEAD) { 2128cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 2129cfdda9d7SSteve Wise return -ECONNRESET; 2130cfdda9d7SSteve Wise } 2131cfdda9d7SSteve Wise BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD); 2132cfdda9d7SSteve Wise if (mpa_rev == 0) 2133cfdda9d7SSteve Wise abort_connection(ep, NULL, GFP_KERNEL); 2134cfdda9d7SSteve Wise else { 2135cfdda9d7SSteve Wise err = send_mpa_reject(ep, pdata, pdata_len); 2136cfdda9d7SSteve Wise err = c4iw_ep_disconnect(ep, 0, GFP_KERNEL); 2137cfdda9d7SSteve Wise } 2138cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 2139cfdda9d7SSteve Wise return 0; 2140cfdda9d7SSteve Wise } 2141cfdda9d7SSteve Wise 2142cfdda9d7SSteve Wise int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 2143cfdda9d7SSteve Wise { 2144cfdda9d7SSteve Wise int err; 2145cfdda9d7SSteve Wise struct c4iw_qp_attributes attrs; 2146cfdda9d7SSteve Wise enum c4iw_qp_attr_mask mask; 2147cfdda9d7SSteve Wise struct c4iw_ep *ep = to_ep(cm_id); 2148cfdda9d7SSteve Wise struct c4iw_dev *h = to_c4iw_dev(cm_id->device); 2149cfdda9d7SSteve Wise struct c4iw_qp *qp = get_qhp(h, conn_param->qpn); 2150cfdda9d7SSteve Wise 2151cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 2152cfdda9d7SSteve Wise if (state_read(&ep->com) == DEAD) { 2153cfdda9d7SSteve Wise err = -ECONNRESET; 2154cfdda9d7SSteve Wise goto err; 2155cfdda9d7SSteve Wise } 2156cfdda9d7SSteve Wise 2157cfdda9d7SSteve Wise BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD); 2158cfdda9d7SSteve Wise BUG_ON(!qp); 2159cfdda9d7SSteve Wise 2160be4c9badSRoland Dreier if ((conn_param->ord > c4iw_max_read_depth) || 2161be4c9badSRoland Dreier (conn_param->ird > c4iw_max_read_depth)) { 2162cfdda9d7SSteve Wise abort_connection(ep, NULL, GFP_KERNEL); 2163cfdda9d7SSteve Wise err = -EINVAL; 2164cfdda9d7SSteve Wise goto err; 2165cfdda9d7SSteve Wise } 2166cfdda9d7SSteve Wise 2167d2fe99e8SKumar Sanghvi if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { 2168d2fe99e8SKumar Sanghvi if (conn_param->ord > ep->ird) { 2169d2fe99e8SKumar Sanghvi ep->ird = conn_param->ird; 2170d2fe99e8SKumar Sanghvi ep->ord = conn_param->ord; 2171d2fe99e8SKumar Sanghvi send_mpa_reject(ep, conn_param->private_data, 2172d2fe99e8SKumar Sanghvi conn_param->private_data_len); 2173d2fe99e8SKumar Sanghvi abort_connection(ep, NULL, GFP_KERNEL); 2174d2fe99e8SKumar Sanghvi err = -ENOMEM; 2175d2fe99e8SKumar Sanghvi goto err; 2176d2fe99e8SKumar Sanghvi } 2177d2fe99e8SKumar Sanghvi if (conn_param->ird > ep->ord) { 2178d2fe99e8SKumar Sanghvi if (!ep->ord) 2179d2fe99e8SKumar Sanghvi conn_param->ird = 1; 2180d2fe99e8SKumar Sanghvi else { 2181d2fe99e8SKumar Sanghvi abort_connection(ep, NULL, GFP_KERNEL); 2182d2fe99e8SKumar Sanghvi err = -ENOMEM; 2183d2fe99e8SKumar Sanghvi goto err; 2184d2fe99e8SKumar Sanghvi } 2185d2fe99e8SKumar Sanghvi } 2186cfdda9d7SSteve Wise 2187d2fe99e8SKumar Sanghvi } 2188cfdda9d7SSteve Wise ep->ird = conn_param->ird; 2189cfdda9d7SSteve Wise ep->ord = conn_param->ord; 2190cfdda9d7SSteve Wise 2191d2fe99e8SKumar Sanghvi if (ep->mpa_attr.version != 2) 2192cfdda9d7SSteve Wise if (peer2peer && ep->ird == 0) 2193cfdda9d7SSteve Wise ep->ird = 1; 2194cfdda9d7SSteve Wise 2195cfdda9d7SSteve Wise PDBG("%s %d ird %d ord %d\n", __func__, __LINE__, ep->ird, ep->ord); 2196cfdda9d7SSteve Wise 2197d2fe99e8SKumar Sanghvi cm_id->add_ref(cm_id); 2198d2fe99e8SKumar Sanghvi ep->com.cm_id = cm_id; 2199d2fe99e8SKumar Sanghvi ep->com.qp = qp; 2200d2fe99e8SKumar Sanghvi 2201cfdda9d7SSteve Wise /* bind QP to EP and move to RTS */ 2202cfdda9d7SSteve Wise attrs.mpa_attr = ep->mpa_attr; 2203cfdda9d7SSteve Wise attrs.max_ird = ep->ird; 2204cfdda9d7SSteve Wise attrs.max_ord = ep->ord; 2205cfdda9d7SSteve Wise attrs.llp_stream_handle = ep; 2206cfdda9d7SSteve Wise attrs.next_state = C4IW_QP_STATE_RTS; 2207cfdda9d7SSteve Wise 2208cfdda9d7SSteve Wise /* bind QP and TID with INIT_WR */ 2209cfdda9d7SSteve Wise mask = C4IW_QP_ATTR_NEXT_STATE | 2210cfdda9d7SSteve Wise C4IW_QP_ATTR_LLP_STREAM_HANDLE | 2211cfdda9d7SSteve Wise C4IW_QP_ATTR_MPA_ATTR | 2212cfdda9d7SSteve Wise C4IW_QP_ATTR_MAX_IRD | 2213cfdda9d7SSteve Wise C4IW_QP_ATTR_MAX_ORD; 2214cfdda9d7SSteve Wise 2215cfdda9d7SSteve Wise err = c4iw_modify_qp(ep->com.qp->rhp, 2216cfdda9d7SSteve Wise ep->com.qp, mask, &attrs, 1); 2217cfdda9d7SSteve Wise if (err) 2218cfdda9d7SSteve Wise goto err1; 2219cfdda9d7SSteve Wise err = send_mpa_reply(ep, conn_param->private_data, 2220cfdda9d7SSteve Wise conn_param->private_data_len); 2221cfdda9d7SSteve Wise if (err) 2222cfdda9d7SSteve Wise goto err1; 2223cfdda9d7SSteve Wise 2224cfdda9d7SSteve Wise state_set(&ep->com, FPDU_MODE); 2225cfdda9d7SSteve Wise established_upcall(ep); 2226cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 2227cfdda9d7SSteve Wise return 0; 2228cfdda9d7SSteve Wise err1: 2229cfdda9d7SSteve Wise ep->com.cm_id = NULL; 2230cfdda9d7SSteve Wise ep->com.qp = NULL; 2231cfdda9d7SSteve Wise cm_id->rem_ref(cm_id); 2232cfdda9d7SSteve Wise err: 2233cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 2234cfdda9d7SSteve Wise return err; 2235cfdda9d7SSteve Wise } 2236cfdda9d7SSteve Wise 2237cfdda9d7SSteve Wise int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 2238cfdda9d7SSteve Wise { 2239cfdda9d7SSteve Wise int err = 0; 2240cfdda9d7SSteve Wise struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 2241cfdda9d7SSteve Wise struct c4iw_ep *ep; 2242cfdda9d7SSteve Wise struct rtable *rt; 2243cfdda9d7SSteve Wise struct net_device *pdev; 224469cce1d1SDavid S. Miller struct neighbour *neigh; 2245cfdda9d7SSteve Wise int step; 2246cfdda9d7SSteve Wise 2247be4c9badSRoland Dreier if ((conn_param->ord > c4iw_max_read_depth) || 2248be4c9badSRoland Dreier (conn_param->ird > c4iw_max_read_depth)) { 2249be4c9badSRoland Dreier err = -EINVAL; 2250be4c9badSRoland Dreier goto out; 2251be4c9badSRoland Dreier } 2252cfdda9d7SSteve Wise ep = alloc_ep(sizeof(*ep), GFP_KERNEL); 2253cfdda9d7SSteve Wise if (!ep) { 2254cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); 2255cfdda9d7SSteve Wise err = -ENOMEM; 2256cfdda9d7SSteve Wise goto out; 2257cfdda9d7SSteve Wise } 2258cfdda9d7SSteve Wise init_timer(&ep->timer); 2259cfdda9d7SSteve Wise ep->plen = conn_param->private_data_len; 2260cfdda9d7SSteve Wise if (ep->plen) 2261cfdda9d7SSteve Wise memcpy(ep->mpa_pkt + sizeof(struct mpa_message), 2262cfdda9d7SSteve Wise conn_param->private_data, ep->plen); 2263cfdda9d7SSteve Wise ep->ird = conn_param->ird; 2264cfdda9d7SSteve Wise ep->ord = conn_param->ord; 2265cfdda9d7SSteve Wise 2266cfdda9d7SSteve Wise if (peer2peer && ep->ord == 0) 2267cfdda9d7SSteve Wise ep->ord = 1; 2268cfdda9d7SSteve Wise 2269cfdda9d7SSteve Wise cm_id->add_ref(cm_id); 2270cfdda9d7SSteve Wise ep->com.dev = dev; 2271cfdda9d7SSteve Wise ep->com.cm_id = cm_id; 2272cfdda9d7SSteve Wise ep->com.qp = get_qhp(dev, conn_param->qpn); 2273cfdda9d7SSteve Wise BUG_ON(!ep->com.qp); 2274cfdda9d7SSteve Wise PDBG("%s qpn 0x%x qp %p cm_id %p\n", __func__, conn_param->qpn, 2275cfdda9d7SSteve Wise ep->com.qp, cm_id); 2276cfdda9d7SSteve Wise 2277cfdda9d7SSteve Wise /* 2278cfdda9d7SSteve Wise * Allocate an active TID to initiate a TCP connection. 2279cfdda9d7SSteve Wise */ 2280cfdda9d7SSteve Wise ep->atid = cxgb4_alloc_atid(dev->rdev.lldi.tids, ep); 2281cfdda9d7SSteve Wise if (ep->atid == -1) { 2282cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __func__); 2283cfdda9d7SSteve Wise err = -ENOMEM; 2284cfdda9d7SSteve Wise goto fail2; 2285cfdda9d7SSteve Wise } 2286cfdda9d7SSteve Wise 2287cfdda9d7SSteve Wise PDBG("%s saddr 0x%x sport 0x%x raddr 0x%x rport 0x%x\n", __func__, 2288cfdda9d7SSteve Wise ntohl(cm_id->local_addr.sin_addr.s_addr), 2289cfdda9d7SSteve Wise ntohs(cm_id->local_addr.sin_port), 2290cfdda9d7SSteve Wise ntohl(cm_id->remote_addr.sin_addr.s_addr), 2291cfdda9d7SSteve Wise ntohs(cm_id->remote_addr.sin_port)); 2292cfdda9d7SSteve Wise 2293cfdda9d7SSteve Wise /* find a route */ 2294cfdda9d7SSteve Wise rt = find_route(dev, 2295cfdda9d7SSteve Wise cm_id->local_addr.sin_addr.s_addr, 2296cfdda9d7SSteve Wise cm_id->remote_addr.sin_addr.s_addr, 2297cfdda9d7SSteve Wise cm_id->local_addr.sin_port, 2298cfdda9d7SSteve Wise cm_id->remote_addr.sin_port, 0); 2299cfdda9d7SSteve Wise if (!rt) { 2300cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - cannot find route.\n", __func__); 2301cfdda9d7SSteve Wise err = -EHOSTUNREACH; 2302cfdda9d7SSteve Wise goto fail3; 2303cfdda9d7SSteve Wise } 2304d8d1f30bSChangli Gao ep->dst = &rt->dst; 2305cfdda9d7SSteve Wise 230669cce1d1SDavid S. Miller neigh = dst_get_neighbour(ep->dst); 230769cce1d1SDavid S. Miller 2308cfdda9d7SSteve Wise /* get a l2t entry */ 230969cce1d1SDavid S. Miller if (neigh->dev->flags & IFF_LOOPBACK) { 2310cfdda9d7SSteve Wise PDBG("%s LOOPBACK\n", __func__); 2311cfdda9d7SSteve Wise pdev = ip_dev_find(&init_net, 2312cfdda9d7SSteve Wise cm_id->remote_addr.sin_addr.s_addr); 2313cfdda9d7SSteve Wise ep->l2t = cxgb4_l2t_get(ep->com.dev->rdev.lldi.l2t, 231469cce1d1SDavid S. Miller neigh, pdev, 0); 2315cfdda9d7SSteve Wise ep->mtu = pdev->mtu; 2316cfdda9d7SSteve Wise ep->tx_chan = cxgb4_port_chan(pdev); 23172c5934bfSSteve Wise ep->smac_idx = (cxgb4_port_viid(pdev) & 0x7F) << 1; 2318cfdda9d7SSteve Wise step = ep->com.dev->rdev.lldi.ntxq / 2319cfdda9d7SSteve Wise ep->com.dev->rdev.lldi.nchan; 2320cfdda9d7SSteve Wise ep->txq_idx = cxgb4_port_idx(pdev) * step; 2321cfdda9d7SSteve Wise step = ep->com.dev->rdev.lldi.nrxq / 2322cfdda9d7SSteve Wise ep->com.dev->rdev.lldi.nchan; 2323d4f1a5c6SSteve Wise ep->ctrlq_idx = cxgb4_port_idx(pdev); 2324cfdda9d7SSteve Wise ep->rss_qid = ep->com.dev->rdev.lldi.rxq_ids[ 2325cfdda9d7SSteve Wise cxgb4_port_idx(pdev) * step]; 2326cfdda9d7SSteve Wise dev_put(pdev); 2327cfdda9d7SSteve Wise } else { 2328cfdda9d7SSteve Wise ep->l2t = cxgb4_l2t_get(ep->com.dev->rdev.lldi.l2t, 232969cce1d1SDavid S. Miller neigh, neigh->dev, 0); 2330cfdda9d7SSteve Wise ep->mtu = dst_mtu(ep->dst); 233169cce1d1SDavid S. Miller ep->tx_chan = cxgb4_port_chan(neigh->dev); 233269cce1d1SDavid S. Miller ep->smac_idx = (cxgb4_port_viid(neigh->dev) & 0x7F) << 1; 2333cfdda9d7SSteve Wise step = ep->com.dev->rdev.lldi.ntxq / 2334cfdda9d7SSteve Wise ep->com.dev->rdev.lldi.nchan; 233569cce1d1SDavid S. Miller ep->txq_idx = cxgb4_port_idx(neigh->dev) * step; 233669cce1d1SDavid S. Miller ep->ctrlq_idx = cxgb4_port_idx(neigh->dev); 2337cfdda9d7SSteve Wise step = ep->com.dev->rdev.lldi.nrxq / 2338cfdda9d7SSteve Wise ep->com.dev->rdev.lldi.nchan; 2339cfdda9d7SSteve Wise ep->rss_qid = ep->com.dev->rdev.lldi.rxq_ids[ 234069cce1d1SDavid S. Miller cxgb4_port_idx(neigh->dev) * step]; 2341d2fe99e8SKumar Sanghvi ep->retry_with_mpa_v1 = 0; 2342d2fe99e8SKumar Sanghvi ep->tried_with_mpa_v1 = 0; 2343cfdda9d7SSteve Wise } 2344cfdda9d7SSteve Wise if (!ep->l2t) { 2345cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__); 2346cfdda9d7SSteve Wise err = -ENOMEM; 2347cfdda9d7SSteve Wise goto fail4; 2348cfdda9d7SSteve Wise } 2349cfdda9d7SSteve Wise 2350cfdda9d7SSteve Wise PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n", 2351cfdda9d7SSteve Wise __func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid, 2352cfdda9d7SSteve Wise ep->l2t->idx); 2353cfdda9d7SSteve Wise 2354cfdda9d7SSteve Wise state_set(&ep->com, CONNECTING); 2355cfdda9d7SSteve Wise ep->tos = 0; 2356cfdda9d7SSteve Wise ep->com.local_addr = cm_id->local_addr; 2357cfdda9d7SSteve Wise ep->com.remote_addr = cm_id->remote_addr; 2358cfdda9d7SSteve Wise 2359cfdda9d7SSteve Wise /* send connect request to rnic */ 2360cfdda9d7SSteve Wise err = send_connect(ep); 2361cfdda9d7SSteve Wise if (!err) 2362cfdda9d7SSteve Wise goto out; 2363cfdda9d7SSteve Wise 2364cfdda9d7SSteve Wise cxgb4_l2t_release(ep->l2t); 2365cfdda9d7SSteve Wise fail4: 2366cfdda9d7SSteve Wise dst_release(ep->dst); 2367cfdda9d7SSteve Wise fail3: 2368cfdda9d7SSteve Wise cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid); 2369cfdda9d7SSteve Wise fail2: 2370cfdda9d7SSteve Wise cm_id->rem_ref(cm_id); 2371cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 2372cfdda9d7SSteve Wise out: 2373cfdda9d7SSteve Wise return err; 2374cfdda9d7SSteve Wise } 2375cfdda9d7SSteve Wise 2376cfdda9d7SSteve Wise int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog) 2377cfdda9d7SSteve Wise { 2378cfdda9d7SSteve Wise int err = 0; 2379cfdda9d7SSteve Wise struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 2380cfdda9d7SSteve Wise struct c4iw_listen_ep *ep; 2381cfdda9d7SSteve Wise 2382cfdda9d7SSteve Wise 2383cfdda9d7SSteve Wise might_sleep(); 2384cfdda9d7SSteve Wise 2385cfdda9d7SSteve Wise ep = alloc_ep(sizeof(*ep), GFP_KERNEL); 2386cfdda9d7SSteve Wise if (!ep) { 2387cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); 2388cfdda9d7SSteve Wise err = -ENOMEM; 2389cfdda9d7SSteve Wise goto fail1; 2390cfdda9d7SSteve Wise } 2391cfdda9d7SSteve Wise PDBG("%s ep %p\n", __func__, ep); 2392cfdda9d7SSteve Wise cm_id->add_ref(cm_id); 2393cfdda9d7SSteve Wise ep->com.cm_id = cm_id; 2394cfdda9d7SSteve Wise ep->com.dev = dev; 2395cfdda9d7SSteve Wise ep->backlog = backlog; 2396cfdda9d7SSteve Wise ep->com.local_addr = cm_id->local_addr; 2397cfdda9d7SSteve Wise 2398cfdda9d7SSteve Wise /* 2399cfdda9d7SSteve Wise * Allocate a server TID. 2400cfdda9d7SSteve Wise */ 2401cfdda9d7SSteve Wise ep->stid = cxgb4_alloc_stid(dev->rdev.lldi.tids, PF_INET, ep); 2402cfdda9d7SSteve Wise if (ep->stid == -1) { 2403be4c9badSRoland Dreier printk(KERN_ERR MOD "%s - cannot alloc stid.\n", __func__); 2404cfdda9d7SSteve Wise err = -ENOMEM; 2405cfdda9d7SSteve Wise goto fail2; 2406cfdda9d7SSteve Wise } 2407cfdda9d7SSteve Wise 2408cfdda9d7SSteve Wise state_set(&ep->com, LISTEN); 2409aadc4df3SSteve Wise c4iw_init_wr_wait(&ep->com.wr_wait); 2410cfdda9d7SSteve Wise err = cxgb4_create_server(ep->com.dev->rdev.lldi.ports[0], ep->stid, 2411cfdda9d7SSteve Wise ep->com.local_addr.sin_addr.s_addr, 2412cfdda9d7SSteve Wise ep->com.local_addr.sin_port, 2413cfdda9d7SSteve Wise ep->com.dev->rdev.lldi.rxq_ids[0]); 2414cfdda9d7SSteve Wise if (err) 2415cfdda9d7SSteve Wise goto fail3; 2416cfdda9d7SSteve Wise 2417cfdda9d7SSteve Wise /* wait for pass_open_rpl */ 2418aadc4df3SSteve Wise err = c4iw_wait_for_reply(&ep->com.dev->rdev, &ep->com.wr_wait, 0, 0, 2419aadc4df3SSteve Wise __func__); 2420cfdda9d7SSteve Wise if (!err) { 2421cfdda9d7SSteve Wise cm_id->provider_data = ep; 2422cfdda9d7SSteve Wise goto out; 2423cfdda9d7SSteve Wise } 2424cfdda9d7SSteve Wise fail3: 2425cfdda9d7SSteve Wise cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid, PF_INET); 2426cfdda9d7SSteve Wise fail2: 2427cfdda9d7SSteve Wise cm_id->rem_ref(cm_id); 2428cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 2429cfdda9d7SSteve Wise fail1: 2430cfdda9d7SSteve Wise out: 2431cfdda9d7SSteve Wise return err; 2432cfdda9d7SSteve Wise } 2433cfdda9d7SSteve Wise 2434cfdda9d7SSteve Wise int c4iw_destroy_listen(struct iw_cm_id *cm_id) 2435cfdda9d7SSteve Wise { 2436cfdda9d7SSteve Wise int err; 2437cfdda9d7SSteve Wise struct c4iw_listen_ep *ep = to_listen_ep(cm_id); 2438cfdda9d7SSteve Wise 2439cfdda9d7SSteve Wise PDBG("%s ep %p\n", __func__, ep); 2440cfdda9d7SSteve Wise 2441cfdda9d7SSteve Wise might_sleep(); 2442cfdda9d7SSteve Wise state_set(&ep->com, DEAD); 2443aadc4df3SSteve Wise c4iw_init_wr_wait(&ep->com.wr_wait); 2444cfdda9d7SSteve Wise err = listen_stop(ep); 2445cfdda9d7SSteve Wise if (err) 2446cfdda9d7SSteve Wise goto done; 2447aadc4df3SSteve Wise err = c4iw_wait_for_reply(&ep->com.dev->rdev, &ep->com.wr_wait, 0, 0, 2448aadc4df3SSteve Wise __func__); 2449cfdda9d7SSteve Wise cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid, PF_INET); 2450cfdda9d7SSteve Wise done: 2451cfdda9d7SSteve Wise cm_id->rem_ref(cm_id); 2452cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 2453cfdda9d7SSteve Wise return err; 2454cfdda9d7SSteve Wise } 2455cfdda9d7SSteve Wise 2456cfdda9d7SSteve Wise int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) 2457cfdda9d7SSteve Wise { 2458cfdda9d7SSteve Wise int ret = 0; 2459cfdda9d7SSteve Wise int close = 0; 2460cfdda9d7SSteve Wise int fatal = 0; 2461cfdda9d7SSteve Wise struct c4iw_rdev *rdev; 2462cfdda9d7SSteve Wise 24632f5b48c3SSteve Wise mutex_lock(&ep->com.mutex); 2464cfdda9d7SSteve Wise 2465cfdda9d7SSteve Wise PDBG("%s ep %p state %s, abrupt %d\n", __func__, ep, 2466cfdda9d7SSteve Wise states[ep->com.state], abrupt); 2467cfdda9d7SSteve Wise 2468cfdda9d7SSteve Wise rdev = &ep->com.dev->rdev; 2469cfdda9d7SSteve Wise if (c4iw_fatal_error(rdev)) { 2470cfdda9d7SSteve Wise fatal = 1; 2471cfdda9d7SSteve Wise close_complete_upcall(ep); 2472cfdda9d7SSteve Wise ep->com.state = DEAD; 2473cfdda9d7SSteve Wise } 2474cfdda9d7SSteve Wise switch (ep->com.state) { 2475cfdda9d7SSteve Wise case MPA_REQ_WAIT: 2476cfdda9d7SSteve Wise case MPA_REQ_SENT: 2477cfdda9d7SSteve Wise case MPA_REQ_RCVD: 2478cfdda9d7SSteve Wise case MPA_REP_SENT: 2479cfdda9d7SSteve Wise case FPDU_MODE: 2480cfdda9d7SSteve Wise close = 1; 2481cfdda9d7SSteve Wise if (abrupt) 2482cfdda9d7SSteve Wise ep->com.state = ABORTING; 2483cfdda9d7SSteve Wise else { 2484cfdda9d7SSteve Wise ep->com.state = CLOSING; 2485ca5a2202SSteve Wise start_ep_timer(ep); 2486cfdda9d7SSteve Wise } 2487cfdda9d7SSteve Wise set_bit(CLOSE_SENT, &ep->com.flags); 2488cfdda9d7SSteve Wise break; 2489cfdda9d7SSteve Wise case CLOSING: 2490cfdda9d7SSteve Wise if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) { 2491cfdda9d7SSteve Wise close = 1; 2492cfdda9d7SSteve Wise if (abrupt) { 2493ca5a2202SSteve Wise stop_ep_timer(ep); 2494cfdda9d7SSteve Wise ep->com.state = ABORTING; 2495cfdda9d7SSteve Wise } else 2496cfdda9d7SSteve Wise ep->com.state = MORIBUND; 2497cfdda9d7SSteve Wise } 2498cfdda9d7SSteve Wise break; 2499cfdda9d7SSteve Wise case MORIBUND: 2500cfdda9d7SSteve Wise case ABORTING: 2501cfdda9d7SSteve Wise case DEAD: 2502cfdda9d7SSteve Wise PDBG("%s ignoring disconnect ep %p state %u\n", 2503cfdda9d7SSteve Wise __func__, ep, ep->com.state); 2504cfdda9d7SSteve Wise break; 2505cfdda9d7SSteve Wise default: 2506cfdda9d7SSteve Wise BUG(); 2507cfdda9d7SSteve Wise break; 2508cfdda9d7SSteve Wise } 2509cfdda9d7SSteve Wise 2510cfdda9d7SSteve Wise if (close) { 25118da7e7a5SSteve Wise if (abrupt) { 25128da7e7a5SSteve Wise close_complete_upcall(ep); 25138da7e7a5SSteve Wise ret = send_abort(ep, NULL, gfp); 25148da7e7a5SSteve Wise } else 2515cfdda9d7SSteve Wise ret = send_halfclose(ep, gfp); 2516cfdda9d7SSteve Wise if (ret) 2517cfdda9d7SSteve Wise fatal = 1; 2518cfdda9d7SSteve Wise } 25198da7e7a5SSteve Wise mutex_unlock(&ep->com.mutex); 2520cfdda9d7SSteve Wise if (fatal) 2521cfdda9d7SSteve Wise release_ep_resources(ep); 2522cfdda9d7SSteve Wise return ret; 2523cfdda9d7SSteve Wise } 2524cfdda9d7SSteve Wise 25252f5b48c3SSteve Wise static int async_event(struct c4iw_dev *dev, struct sk_buff *skb) 25262f5b48c3SSteve Wise { 25272f5b48c3SSteve Wise struct cpl_fw6_msg *rpl = cplhdr(skb); 25282f5b48c3SSteve Wise c4iw_ev_dispatch(dev, (struct t4_cqe *)&rpl->data[0]); 25292f5b48c3SSteve Wise return 0; 25302f5b48c3SSteve Wise } 25312f5b48c3SSteve Wise 2532cfdda9d7SSteve Wise /* 2533be4c9badSRoland Dreier * These are the real handlers that are called from a 2534be4c9badSRoland Dreier * work queue. 2535be4c9badSRoland Dreier */ 2536be4c9badSRoland Dreier static c4iw_handler_func work_handlers[NUM_CPL_CMDS] = { 2537be4c9badSRoland Dreier [CPL_ACT_ESTABLISH] = act_establish, 2538be4c9badSRoland Dreier [CPL_ACT_OPEN_RPL] = act_open_rpl, 2539be4c9badSRoland Dreier [CPL_RX_DATA] = rx_data, 2540be4c9badSRoland Dreier [CPL_ABORT_RPL_RSS] = abort_rpl, 2541be4c9badSRoland Dreier [CPL_ABORT_RPL] = abort_rpl, 2542be4c9badSRoland Dreier [CPL_PASS_OPEN_RPL] = pass_open_rpl, 2543be4c9badSRoland Dreier [CPL_CLOSE_LISTSRV_RPL] = close_listsrv_rpl, 2544be4c9badSRoland Dreier [CPL_PASS_ACCEPT_REQ] = pass_accept_req, 2545be4c9badSRoland Dreier [CPL_PASS_ESTABLISH] = pass_establish, 2546be4c9badSRoland Dreier [CPL_PEER_CLOSE] = peer_close, 2547be4c9badSRoland Dreier [CPL_ABORT_REQ_RSS] = peer_abort, 2548be4c9badSRoland Dreier [CPL_CLOSE_CON_RPL] = close_con_rpl, 2549be4c9badSRoland Dreier [CPL_RDMA_TERMINATE] = terminate, 25502f5b48c3SSteve Wise [CPL_FW4_ACK] = fw4_ack, 25512f5b48c3SSteve Wise [CPL_FW6_MSG] = async_event 2552be4c9badSRoland Dreier }; 2553be4c9badSRoland Dreier 2554be4c9badSRoland Dreier static void process_timeout(struct c4iw_ep *ep) 2555be4c9badSRoland Dreier { 2556be4c9badSRoland Dreier struct c4iw_qp_attributes attrs; 2557be4c9badSRoland Dreier int abort = 1; 2558be4c9badSRoland Dreier 25592f5b48c3SSteve Wise mutex_lock(&ep->com.mutex); 2560be4c9badSRoland Dreier PDBG("%s ep %p tid %u state %d\n", __func__, ep, ep->hwtid, 2561be4c9badSRoland Dreier ep->com.state); 2562be4c9badSRoland Dreier switch (ep->com.state) { 2563be4c9badSRoland Dreier case MPA_REQ_SENT: 2564be4c9badSRoland Dreier __state_set(&ep->com, ABORTING); 2565be4c9badSRoland Dreier connect_reply_upcall(ep, -ETIMEDOUT); 2566be4c9badSRoland Dreier break; 2567be4c9badSRoland Dreier case MPA_REQ_WAIT: 2568be4c9badSRoland Dreier __state_set(&ep->com, ABORTING); 2569be4c9badSRoland Dreier break; 2570be4c9badSRoland Dreier case CLOSING: 2571be4c9badSRoland Dreier case MORIBUND: 2572be4c9badSRoland Dreier if (ep->com.cm_id && ep->com.qp) { 2573be4c9badSRoland Dreier attrs.next_state = C4IW_QP_STATE_ERROR; 2574be4c9badSRoland Dreier c4iw_modify_qp(ep->com.qp->rhp, 2575be4c9badSRoland Dreier ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, 2576be4c9badSRoland Dreier &attrs, 1); 2577be4c9badSRoland Dreier } 2578be4c9badSRoland Dreier __state_set(&ep->com, ABORTING); 2579be4c9badSRoland Dreier break; 2580be4c9badSRoland Dreier default: 2581be4c9badSRoland Dreier printk(KERN_ERR "%s unexpected state ep %p tid %u state %u\n", 2582be4c9badSRoland Dreier __func__, ep, ep->hwtid, ep->com.state); 2583be4c9badSRoland Dreier WARN_ON(1); 2584be4c9badSRoland Dreier abort = 0; 2585be4c9badSRoland Dreier } 25862f5b48c3SSteve Wise mutex_unlock(&ep->com.mutex); 2587be4c9badSRoland Dreier if (abort) 2588be4c9badSRoland Dreier abort_connection(ep, NULL, GFP_KERNEL); 2589be4c9badSRoland Dreier c4iw_put_ep(&ep->com); 2590be4c9badSRoland Dreier } 2591be4c9badSRoland Dreier 2592be4c9badSRoland Dreier static void process_timedout_eps(void) 2593be4c9badSRoland Dreier { 2594be4c9badSRoland Dreier struct c4iw_ep *ep; 2595be4c9badSRoland Dreier 2596be4c9badSRoland Dreier spin_lock_irq(&timeout_lock); 2597be4c9badSRoland Dreier while (!list_empty(&timeout_list)) { 2598be4c9badSRoland Dreier struct list_head *tmp; 2599be4c9badSRoland Dreier 2600be4c9badSRoland Dreier tmp = timeout_list.next; 2601be4c9badSRoland Dreier list_del(tmp); 2602be4c9badSRoland Dreier spin_unlock_irq(&timeout_lock); 2603be4c9badSRoland Dreier ep = list_entry(tmp, struct c4iw_ep, entry); 2604be4c9badSRoland Dreier process_timeout(ep); 2605be4c9badSRoland Dreier spin_lock_irq(&timeout_lock); 2606be4c9badSRoland Dreier } 2607be4c9badSRoland Dreier spin_unlock_irq(&timeout_lock); 2608be4c9badSRoland Dreier } 2609be4c9badSRoland Dreier 2610be4c9badSRoland Dreier static void process_work(struct work_struct *work) 2611be4c9badSRoland Dreier { 2612be4c9badSRoland Dreier struct sk_buff *skb = NULL; 2613be4c9badSRoland Dreier struct c4iw_dev *dev; 2614c1d7356cSDan Carpenter struct cpl_act_establish *rpl; 2615be4c9badSRoland Dreier unsigned int opcode; 2616be4c9badSRoland Dreier int ret; 2617be4c9badSRoland Dreier 2618be4c9badSRoland Dreier while ((skb = skb_dequeue(&rxq))) { 2619be4c9badSRoland Dreier rpl = cplhdr(skb); 2620be4c9badSRoland Dreier dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *))); 2621be4c9badSRoland Dreier opcode = rpl->ot.opcode; 2622be4c9badSRoland Dreier 2623be4c9badSRoland Dreier BUG_ON(!work_handlers[opcode]); 2624be4c9badSRoland Dreier ret = work_handlers[opcode](dev, skb); 2625be4c9badSRoland Dreier if (!ret) 2626be4c9badSRoland Dreier kfree_skb(skb); 2627be4c9badSRoland Dreier } 2628be4c9badSRoland Dreier process_timedout_eps(); 2629be4c9badSRoland Dreier } 2630be4c9badSRoland Dreier 2631be4c9badSRoland Dreier static DECLARE_WORK(skb_work, process_work); 2632be4c9badSRoland Dreier 2633be4c9badSRoland Dreier static void ep_timeout(unsigned long arg) 2634be4c9badSRoland Dreier { 2635be4c9badSRoland Dreier struct c4iw_ep *ep = (struct c4iw_ep *)arg; 2636be4c9badSRoland Dreier 2637be4c9badSRoland Dreier spin_lock(&timeout_lock); 2638be4c9badSRoland Dreier list_add_tail(&ep->entry, &timeout_list); 2639be4c9badSRoland Dreier spin_unlock(&timeout_lock); 2640be4c9badSRoland Dreier queue_work(workq, &skb_work); 2641be4c9badSRoland Dreier } 2642be4c9badSRoland Dreier 2643be4c9badSRoland Dreier /* 2644cfdda9d7SSteve Wise * All the CM events are handled on a work queue to have a safe context. 2645cfdda9d7SSteve Wise */ 2646cfdda9d7SSteve Wise static int sched(struct c4iw_dev *dev, struct sk_buff *skb) 2647cfdda9d7SSteve Wise { 2648cfdda9d7SSteve Wise 2649cfdda9d7SSteve Wise /* 2650cfdda9d7SSteve Wise * Save dev in the skb->cb area. 2651cfdda9d7SSteve Wise */ 2652cfdda9d7SSteve Wise *((struct c4iw_dev **) (skb->cb + sizeof(void *))) = dev; 2653cfdda9d7SSteve Wise 2654cfdda9d7SSteve Wise /* 2655cfdda9d7SSteve Wise * Queue the skb and schedule the worker thread. 2656cfdda9d7SSteve Wise */ 2657cfdda9d7SSteve Wise skb_queue_tail(&rxq, skb); 2658cfdda9d7SSteve Wise queue_work(workq, &skb_work); 2659cfdda9d7SSteve Wise return 0; 2660cfdda9d7SSteve Wise } 2661cfdda9d7SSteve Wise 2662cfdda9d7SSteve Wise static int set_tcb_rpl(struct c4iw_dev *dev, struct sk_buff *skb) 2663cfdda9d7SSteve Wise { 2664cfdda9d7SSteve Wise struct cpl_set_tcb_rpl *rpl = cplhdr(skb); 2665cfdda9d7SSteve Wise 2666cfdda9d7SSteve Wise if (rpl->status != CPL_ERR_NONE) { 2667cfdda9d7SSteve Wise printk(KERN_ERR MOD "Unexpected SET_TCB_RPL status %u " 2668cfdda9d7SSteve Wise "for tid %u\n", rpl->status, GET_TID(rpl)); 2669cfdda9d7SSteve Wise } 26702f5b48c3SSteve Wise kfree_skb(skb); 2671cfdda9d7SSteve Wise return 0; 2672cfdda9d7SSteve Wise } 2673cfdda9d7SSteve Wise 2674be4c9badSRoland Dreier static int fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb) 2675be4c9badSRoland Dreier { 2676be4c9badSRoland Dreier struct cpl_fw6_msg *rpl = cplhdr(skb); 2677be4c9badSRoland Dreier struct c4iw_wr_wait *wr_waitp; 2678be4c9badSRoland Dreier int ret; 2679be4c9badSRoland Dreier 2680be4c9badSRoland Dreier PDBG("%s type %u\n", __func__, rpl->type); 2681be4c9badSRoland Dreier 2682be4c9badSRoland Dreier switch (rpl->type) { 2683be4c9badSRoland Dreier case 1: 2684be4c9badSRoland Dreier ret = (int)((be64_to_cpu(rpl->data[0]) >> 8) & 0xff); 2685c8e081a1SRoland Dreier wr_waitp = (struct c4iw_wr_wait *)(__force unsigned long) rpl->data[1]; 2686be4c9badSRoland Dreier PDBG("%s wr_waitp %p ret %u\n", __func__, wr_waitp, ret); 2687d9594d99SSteve Wise if (wr_waitp) 2688d9594d99SSteve Wise c4iw_wake_up(wr_waitp, ret ? -ret : 0); 26892f5b48c3SSteve Wise kfree_skb(skb); 2690be4c9badSRoland Dreier break; 2691be4c9badSRoland Dreier case 2: 26922f5b48c3SSteve Wise sched(dev, skb); 2693be4c9badSRoland Dreier break; 2694be4c9badSRoland Dreier default: 2695be4c9badSRoland Dreier printk(KERN_ERR MOD "%s unexpected fw6 msg type %u\n", __func__, 2696be4c9badSRoland Dreier rpl->type); 26972f5b48c3SSteve Wise kfree_skb(skb); 2698be4c9badSRoland Dreier break; 2699be4c9badSRoland Dreier } 2700be4c9badSRoland Dreier return 0; 2701be4c9badSRoland Dreier } 2702be4c9badSRoland Dreier 27038da7e7a5SSteve Wise static int peer_abort_intr(struct c4iw_dev *dev, struct sk_buff *skb) 27048da7e7a5SSteve Wise { 27058da7e7a5SSteve Wise struct cpl_abort_req_rss *req = cplhdr(skb); 27068da7e7a5SSteve Wise struct c4iw_ep *ep; 27078da7e7a5SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 27088da7e7a5SSteve Wise unsigned int tid = GET_TID(req); 27098da7e7a5SSteve Wise 27108da7e7a5SSteve Wise ep = lookup_tid(t, tid); 27118da7e7a5SSteve Wise if (is_neg_adv_abort(req->status)) { 27128da7e7a5SSteve Wise PDBG("%s neg_adv_abort ep %p tid %u\n", __func__, ep, 27138da7e7a5SSteve Wise ep->hwtid); 27148da7e7a5SSteve Wise kfree_skb(skb); 27158da7e7a5SSteve Wise return 0; 27168da7e7a5SSteve Wise } 27178da7e7a5SSteve Wise PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid, 27188da7e7a5SSteve Wise ep->com.state); 27198da7e7a5SSteve Wise 27208da7e7a5SSteve Wise /* 27218da7e7a5SSteve Wise * Wake up any threads in rdma_init() or rdma_fini(). 2722d2fe99e8SKumar Sanghvi * However, this is not needed if com state is just 2723d2fe99e8SKumar Sanghvi * MPA_REQ_SENT 27248da7e7a5SSteve Wise */ 2725d2fe99e8SKumar Sanghvi if (ep->com.state != MPA_REQ_SENT) 27268da7e7a5SSteve Wise c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); 27278da7e7a5SSteve Wise sched(dev, skb); 27288da7e7a5SSteve Wise return 0; 27298da7e7a5SSteve Wise } 27308da7e7a5SSteve Wise 2731be4c9badSRoland Dreier /* 2732be4c9badSRoland Dreier * Most upcalls from the T4 Core go to sched() to 2733be4c9badSRoland Dreier * schedule the processing on a work queue. 2734be4c9badSRoland Dreier */ 2735be4c9badSRoland Dreier c4iw_handler_func c4iw_handlers[NUM_CPL_CMDS] = { 2736be4c9badSRoland Dreier [CPL_ACT_ESTABLISH] = sched, 2737be4c9badSRoland Dreier [CPL_ACT_OPEN_RPL] = sched, 2738be4c9badSRoland Dreier [CPL_RX_DATA] = sched, 2739be4c9badSRoland Dreier [CPL_ABORT_RPL_RSS] = sched, 2740be4c9badSRoland Dreier [CPL_ABORT_RPL] = sched, 2741be4c9badSRoland Dreier [CPL_PASS_OPEN_RPL] = sched, 2742be4c9badSRoland Dreier [CPL_CLOSE_LISTSRV_RPL] = sched, 2743be4c9badSRoland Dreier [CPL_PASS_ACCEPT_REQ] = sched, 2744be4c9badSRoland Dreier [CPL_PASS_ESTABLISH] = sched, 2745be4c9badSRoland Dreier [CPL_PEER_CLOSE] = sched, 2746be4c9badSRoland Dreier [CPL_CLOSE_CON_RPL] = sched, 27478da7e7a5SSteve Wise [CPL_ABORT_REQ_RSS] = peer_abort_intr, 2748be4c9badSRoland Dreier [CPL_RDMA_TERMINATE] = sched, 2749be4c9badSRoland Dreier [CPL_FW4_ACK] = sched, 2750be4c9badSRoland Dreier [CPL_SET_TCB_RPL] = set_tcb_rpl, 2751be4c9badSRoland Dreier [CPL_FW6_MSG] = fw6_msg 2752be4c9badSRoland Dreier }; 2753be4c9badSRoland Dreier 2754cfdda9d7SSteve Wise int __init c4iw_cm_init(void) 2755cfdda9d7SSteve Wise { 2756be4c9badSRoland Dreier spin_lock_init(&timeout_lock); 2757cfdda9d7SSteve Wise skb_queue_head_init(&rxq); 2758cfdda9d7SSteve Wise 2759cfdda9d7SSteve Wise workq = create_singlethread_workqueue("iw_cxgb4"); 2760cfdda9d7SSteve Wise if (!workq) 2761cfdda9d7SSteve Wise return -ENOMEM; 2762cfdda9d7SSteve Wise 2763cfdda9d7SSteve Wise return 0; 2764cfdda9d7SSteve Wise } 2765cfdda9d7SSteve Wise 2766cfdda9d7SSteve Wise void __exit c4iw_cm_term(void) 2767cfdda9d7SSteve Wise { 2768be4c9badSRoland Dreier WARN_ON(!list_empty(&timeout_list)); 2769cfdda9d7SSteve Wise flush_workqueue(workq); 2770cfdda9d7SSteve Wise destroy_workqueue(workq); 2771cfdda9d7SSteve Wise } 2772