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 64ba6d3925SSteve Wise static int dack_mode; 65ba6d3925SSteve Wise module_param(dack_mode, int, 0644); 66ba6d3925SSteve Wise MODULE_PARM_DESC(dack_mode, "Delayed ack mode (default=0)"); 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, " 106cfdda9d7SSteve Wise "1 is spec compliant. (default=1)"); 107cfdda9d7SSteve Wise 108cfdda9d7SSteve Wise static int markers_enabled; 109cfdda9d7SSteve Wise module_param(markers_enabled, int, 0644); 110cfdda9d7SSteve Wise MODULE_PARM_DESC(markers_enabled, "Enable MPA MARKERS (default(0)=disabled)"); 111cfdda9d7SSteve Wise 112cfdda9d7SSteve Wise static int crc_enabled = 1; 113cfdda9d7SSteve Wise module_param(crc_enabled, int, 0644); 114cfdda9d7SSteve Wise MODULE_PARM_DESC(crc_enabled, "Enable MPA CRC (default(1)=enabled)"); 115cfdda9d7SSteve Wise 116cfdda9d7SSteve Wise static int rcv_win = 256 * 1024; 117cfdda9d7SSteve Wise module_param(rcv_win, int, 0644); 118cfdda9d7SSteve Wise MODULE_PARM_DESC(rcv_win, "TCP receive window in bytes (default=256KB)"); 119cfdda9d7SSteve Wise 12098ae68b7SSteve Wise static int snd_win = 128 * 1024; 121cfdda9d7SSteve Wise module_param(snd_win, int, 0644); 12298ae68b7SSteve Wise MODULE_PARM_DESC(snd_win, "TCP send window in bytes (default=128KB)"); 123cfdda9d7SSteve Wise 124cfdda9d7SSteve Wise static struct workqueue_struct *workq; 125cfdda9d7SSteve Wise 126cfdda9d7SSteve Wise static struct sk_buff_head rxq; 127cfdda9d7SSteve Wise 128cfdda9d7SSteve Wise static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp); 129cfdda9d7SSteve Wise static void ep_timeout(unsigned long arg); 130cfdda9d7SSteve Wise static void connect_reply_upcall(struct c4iw_ep *ep, int status); 131cfdda9d7SSteve Wise 132be4c9badSRoland Dreier static LIST_HEAD(timeout_list); 133be4c9badSRoland Dreier static spinlock_t timeout_lock; 134be4c9badSRoland Dreier 135cfdda9d7SSteve Wise static void start_ep_timer(struct c4iw_ep *ep) 136cfdda9d7SSteve Wise { 137cfdda9d7SSteve Wise PDBG("%s ep %p\n", __func__, ep); 138cfdda9d7SSteve Wise if (timer_pending(&ep->timer)) { 139cfdda9d7SSteve Wise PDBG("%s stopped / restarted timer ep %p\n", __func__, ep); 140cfdda9d7SSteve Wise del_timer_sync(&ep->timer); 141cfdda9d7SSteve Wise } else 142cfdda9d7SSteve Wise c4iw_get_ep(&ep->com); 143cfdda9d7SSteve Wise ep->timer.expires = jiffies + ep_timeout_secs * HZ; 144cfdda9d7SSteve Wise ep->timer.data = (unsigned long)ep; 145cfdda9d7SSteve Wise ep->timer.function = ep_timeout; 146cfdda9d7SSteve Wise add_timer(&ep->timer); 147cfdda9d7SSteve Wise } 148cfdda9d7SSteve Wise 149cfdda9d7SSteve Wise static void stop_ep_timer(struct c4iw_ep *ep) 150cfdda9d7SSteve Wise { 151cfdda9d7SSteve Wise PDBG("%s ep %p\n", __func__, ep); 152cfdda9d7SSteve Wise if (!timer_pending(&ep->timer)) { 153cfdda9d7SSteve Wise printk(KERN_ERR "%s timer stopped when its not running! " 154cfdda9d7SSteve Wise "ep %p state %u\n", __func__, ep, ep->com.state); 155cfdda9d7SSteve Wise WARN_ON(1); 156cfdda9d7SSteve Wise return; 157cfdda9d7SSteve Wise } 158cfdda9d7SSteve Wise del_timer_sync(&ep->timer); 159cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 160cfdda9d7SSteve Wise } 161cfdda9d7SSteve Wise 162cfdda9d7SSteve Wise static int c4iw_l2t_send(struct c4iw_rdev *rdev, struct sk_buff *skb, 163cfdda9d7SSteve Wise struct l2t_entry *l2e) 164cfdda9d7SSteve Wise { 165cfdda9d7SSteve Wise int error = 0; 166cfdda9d7SSteve Wise 167cfdda9d7SSteve Wise if (c4iw_fatal_error(rdev)) { 168cfdda9d7SSteve Wise kfree_skb(skb); 169cfdda9d7SSteve Wise PDBG("%s - device in error state - dropping\n", __func__); 170cfdda9d7SSteve Wise return -EIO; 171cfdda9d7SSteve Wise } 172cfdda9d7SSteve Wise error = cxgb4_l2t_send(rdev->lldi.ports[0], skb, l2e); 173cfdda9d7SSteve Wise if (error < 0) 174cfdda9d7SSteve Wise kfree_skb(skb); 17574594861SSteve Wise return error < 0 ? error : 0; 176cfdda9d7SSteve Wise } 177cfdda9d7SSteve Wise 178cfdda9d7SSteve Wise int c4iw_ofld_send(struct c4iw_rdev *rdev, struct sk_buff *skb) 179cfdda9d7SSteve Wise { 180cfdda9d7SSteve Wise int error = 0; 181cfdda9d7SSteve Wise 182cfdda9d7SSteve Wise if (c4iw_fatal_error(rdev)) { 183cfdda9d7SSteve Wise kfree_skb(skb); 184cfdda9d7SSteve Wise PDBG("%s - device in error state - dropping\n", __func__); 185cfdda9d7SSteve Wise return -EIO; 186cfdda9d7SSteve Wise } 187cfdda9d7SSteve Wise error = cxgb4_ofld_send(rdev->lldi.ports[0], skb); 188cfdda9d7SSteve Wise if (error < 0) 189cfdda9d7SSteve Wise kfree_skb(skb); 19074594861SSteve Wise return error < 0 ? error : 0; 191cfdda9d7SSteve Wise } 192cfdda9d7SSteve Wise 193cfdda9d7SSteve Wise static void release_tid(struct c4iw_rdev *rdev, u32 hwtid, struct sk_buff *skb) 194cfdda9d7SSteve Wise { 195cfdda9d7SSteve Wise struct cpl_tid_release *req; 196cfdda9d7SSteve Wise 197cfdda9d7SSteve Wise skb = get_skb(skb, sizeof *req, GFP_KERNEL); 198cfdda9d7SSteve Wise if (!skb) 199cfdda9d7SSteve Wise return; 200cfdda9d7SSteve Wise req = (struct cpl_tid_release *) skb_put(skb, sizeof(*req)); 201cfdda9d7SSteve Wise INIT_TP_WR(req, hwtid); 202cfdda9d7SSteve Wise OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_TID_RELEASE, hwtid)); 203cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_SETUP, 0); 204cfdda9d7SSteve Wise c4iw_ofld_send(rdev, skb); 205cfdda9d7SSteve Wise return; 206cfdda9d7SSteve Wise } 207cfdda9d7SSteve Wise 208cfdda9d7SSteve Wise static void set_emss(struct c4iw_ep *ep, u16 opt) 209cfdda9d7SSteve Wise { 210cfdda9d7SSteve Wise ep->emss = ep->com.dev->rdev.lldi.mtus[GET_TCPOPT_MSS(opt)] - 40; 211cfdda9d7SSteve Wise ep->mss = ep->emss; 212cfdda9d7SSteve Wise if (GET_TCPOPT_TSTAMP(opt)) 213cfdda9d7SSteve Wise ep->emss -= 12; 214cfdda9d7SSteve Wise if (ep->emss < 128) 215cfdda9d7SSteve Wise ep->emss = 128; 216cfdda9d7SSteve Wise PDBG("%s mss_idx %u mss %u emss=%u\n", __func__, GET_TCPOPT_MSS(opt), 217cfdda9d7SSteve Wise ep->mss, ep->emss); 218cfdda9d7SSteve Wise } 219cfdda9d7SSteve Wise 220cfdda9d7SSteve Wise static enum c4iw_ep_state state_read(struct c4iw_ep_common *epc) 221cfdda9d7SSteve Wise { 222cfdda9d7SSteve Wise enum c4iw_ep_state state; 223cfdda9d7SSteve Wise 2242f5b48c3SSteve Wise mutex_lock(&epc->mutex); 225cfdda9d7SSteve Wise state = epc->state; 2262f5b48c3SSteve Wise mutex_unlock(&epc->mutex); 227cfdda9d7SSteve Wise return state; 228cfdda9d7SSteve Wise } 229cfdda9d7SSteve Wise 230cfdda9d7SSteve Wise static void __state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new) 231cfdda9d7SSteve Wise { 232cfdda9d7SSteve Wise epc->state = new; 233cfdda9d7SSteve Wise } 234cfdda9d7SSteve Wise 235cfdda9d7SSteve Wise static void state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new) 236cfdda9d7SSteve Wise { 2372f5b48c3SSteve Wise mutex_lock(&epc->mutex); 238cfdda9d7SSteve Wise PDBG("%s - %s -> %s\n", __func__, states[epc->state], states[new]); 239cfdda9d7SSteve Wise __state_set(epc, new); 2402f5b48c3SSteve Wise mutex_unlock(&epc->mutex); 241cfdda9d7SSteve Wise return; 242cfdda9d7SSteve Wise } 243cfdda9d7SSteve Wise 244cfdda9d7SSteve Wise static void *alloc_ep(int size, gfp_t gfp) 245cfdda9d7SSteve Wise { 246cfdda9d7SSteve Wise struct c4iw_ep_common *epc; 247cfdda9d7SSteve Wise 248cfdda9d7SSteve Wise epc = kzalloc(size, gfp); 249cfdda9d7SSteve Wise if (epc) { 250cfdda9d7SSteve Wise kref_init(&epc->kref); 2512f5b48c3SSteve Wise mutex_init(&epc->mutex); 252aadc4df3SSteve Wise c4iw_init_wr_wait(&epc->wr_wait); 253cfdda9d7SSteve Wise } 254cfdda9d7SSteve Wise PDBG("%s alloc ep %p\n", __func__, epc); 255cfdda9d7SSteve Wise return epc; 256cfdda9d7SSteve Wise } 257cfdda9d7SSteve Wise 258cfdda9d7SSteve Wise void _c4iw_free_ep(struct kref *kref) 259cfdda9d7SSteve Wise { 260cfdda9d7SSteve Wise struct c4iw_ep *ep; 261cfdda9d7SSteve Wise 262cfdda9d7SSteve Wise ep = container_of(kref, struct c4iw_ep, com.kref); 263cfdda9d7SSteve Wise PDBG("%s ep %p state %s\n", __func__, ep, states[state_read(&ep->com)]); 264cfdda9d7SSteve Wise if (test_bit(RELEASE_RESOURCES, &ep->com.flags)) { 265cfdda9d7SSteve Wise cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid); 266cfdda9d7SSteve Wise dst_release(ep->dst); 267cfdda9d7SSteve Wise cxgb4_l2t_release(ep->l2t); 268cfdda9d7SSteve Wise } 269cfdda9d7SSteve Wise kfree(ep); 270cfdda9d7SSteve Wise } 271cfdda9d7SSteve Wise 272cfdda9d7SSteve Wise static void release_ep_resources(struct c4iw_ep *ep) 273cfdda9d7SSteve Wise { 274cfdda9d7SSteve Wise set_bit(RELEASE_RESOURCES, &ep->com.flags); 275cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 276cfdda9d7SSteve Wise } 277cfdda9d7SSteve Wise 278cfdda9d7SSteve Wise static int status2errno(int status) 279cfdda9d7SSteve Wise { 280cfdda9d7SSteve Wise switch (status) { 281cfdda9d7SSteve Wise case CPL_ERR_NONE: 282cfdda9d7SSteve Wise return 0; 283cfdda9d7SSteve Wise case CPL_ERR_CONN_RESET: 284cfdda9d7SSteve Wise return -ECONNRESET; 285cfdda9d7SSteve Wise case CPL_ERR_ARP_MISS: 286cfdda9d7SSteve Wise return -EHOSTUNREACH; 287cfdda9d7SSteve Wise case CPL_ERR_CONN_TIMEDOUT: 288cfdda9d7SSteve Wise return -ETIMEDOUT; 289cfdda9d7SSteve Wise case CPL_ERR_TCAM_FULL: 290cfdda9d7SSteve Wise return -ENOMEM; 291cfdda9d7SSteve Wise case CPL_ERR_CONN_EXIST: 292cfdda9d7SSteve Wise return -EADDRINUSE; 293cfdda9d7SSteve Wise default: 294cfdda9d7SSteve Wise return -EIO; 295cfdda9d7SSteve Wise } 296cfdda9d7SSteve Wise } 297cfdda9d7SSteve Wise 298cfdda9d7SSteve Wise /* 299cfdda9d7SSteve Wise * Try and reuse skbs already allocated... 300cfdda9d7SSteve Wise */ 301cfdda9d7SSteve Wise static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp) 302cfdda9d7SSteve Wise { 303cfdda9d7SSteve Wise if (skb && !skb_is_nonlinear(skb) && !skb_cloned(skb)) { 304cfdda9d7SSteve Wise skb_trim(skb, 0); 305cfdda9d7SSteve Wise skb_get(skb); 306cfdda9d7SSteve Wise skb_reset_transport_header(skb); 307cfdda9d7SSteve Wise } else { 308cfdda9d7SSteve Wise skb = alloc_skb(len, gfp); 309cfdda9d7SSteve Wise } 310cfdda9d7SSteve Wise return skb; 311cfdda9d7SSteve Wise } 312cfdda9d7SSteve Wise 313cfdda9d7SSteve Wise static struct rtable *find_route(struct c4iw_dev *dev, __be32 local_ip, 314cfdda9d7SSteve Wise __be32 peer_ip, __be16 local_port, 315cfdda9d7SSteve Wise __be16 peer_port, u8 tos) 316cfdda9d7SSteve Wise { 317cfdda9d7SSteve Wise struct rtable *rt; 318cfdda9d7SSteve Wise struct flowi fl = { 319cfdda9d7SSteve Wise .oif = 0, 320cfdda9d7SSteve Wise .nl_u = { 321cfdda9d7SSteve Wise .ip4_u = { 322cfdda9d7SSteve Wise .daddr = peer_ip, 323cfdda9d7SSteve Wise .saddr = local_ip, 324cfdda9d7SSteve Wise .tos = tos} 325cfdda9d7SSteve Wise }, 326cfdda9d7SSteve Wise .proto = IPPROTO_TCP, 327cfdda9d7SSteve Wise .uli_u = { 328cfdda9d7SSteve Wise .ports = { 329cfdda9d7SSteve Wise .sport = local_port, 330cfdda9d7SSteve Wise .dport = peer_port} 331cfdda9d7SSteve Wise } 332cfdda9d7SSteve Wise }; 333cfdda9d7SSteve Wise 334cfdda9d7SSteve Wise if (ip_route_output_flow(&init_net, &rt, &fl, NULL, 0)) 335cfdda9d7SSteve Wise return NULL; 336cfdda9d7SSteve Wise return rt; 337cfdda9d7SSteve Wise } 338cfdda9d7SSteve Wise 339cfdda9d7SSteve Wise static void arp_failure_discard(void *handle, struct sk_buff *skb) 340cfdda9d7SSteve Wise { 341cfdda9d7SSteve Wise PDBG("%s c4iw_dev %p\n", __func__, handle); 342cfdda9d7SSteve Wise kfree_skb(skb); 343cfdda9d7SSteve Wise } 344cfdda9d7SSteve Wise 345cfdda9d7SSteve Wise /* 346cfdda9d7SSteve Wise * Handle an ARP failure for an active open. 347cfdda9d7SSteve Wise */ 348cfdda9d7SSteve Wise static void act_open_req_arp_failure(void *handle, struct sk_buff *skb) 349cfdda9d7SSteve Wise { 350cfdda9d7SSteve Wise printk(KERN_ERR MOD "ARP failure duing connect\n"); 351cfdda9d7SSteve Wise kfree_skb(skb); 352cfdda9d7SSteve Wise } 353cfdda9d7SSteve Wise 354cfdda9d7SSteve Wise /* 355cfdda9d7SSteve Wise * Handle an ARP failure for a CPL_ABORT_REQ. Change it into a no RST variant 356cfdda9d7SSteve Wise * and send it along. 357cfdda9d7SSteve Wise */ 358cfdda9d7SSteve Wise static void abort_arp_failure(void *handle, struct sk_buff *skb) 359cfdda9d7SSteve Wise { 360cfdda9d7SSteve Wise struct c4iw_rdev *rdev = handle; 361cfdda9d7SSteve Wise struct cpl_abort_req *req = cplhdr(skb); 362cfdda9d7SSteve Wise 363cfdda9d7SSteve Wise PDBG("%s rdev %p\n", __func__, rdev); 364cfdda9d7SSteve Wise req->cmd = CPL_ABORT_NO_RST; 365cfdda9d7SSteve Wise c4iw_ofld_send(rdev, skb); 366cfdda9d7SSteve Wise } 367cfdda9d7SSteve Wise 368cfdda9d7SSteve Wise static void send_flowc(struct c4iw_ep *ep, struct sk_buff *skb) 369cfdda9d7SSteve Wise { 370cfdda9d7SSteve Wise unsigned int flowclen = 80; 371cfdda9d7SSteve Wise struct fw_flowc_wr *flowc; 372cfdda9d7SSteve Wise int i; 373cfdda9d7SSteve Wise 374cfdda9d7SSteve Wise skb = get_skb(skb, flowclen, GFP_KERNEL); 375cfdda9d7SSteve Wise flowc = (struct fw_flowc_wr *)__skb_put(skb, flowclen); 376cfdda9d7SSteve Wise 377cfdda9d7SSteve Wise flowc->op_to_nparams = cpu_to_be32(FW_WR_OP(FW_FLOWC_WR) | 378cfdda9d7SSteve Wise FW_FLOWC_WR_NPARAMS(8)); 379cfdda9d7SSteve Wise flowc->flowid_len16 = cpu_to_be32(FW_WR_LEN16(DIV_ROUND_UP(flowclen, 380cfdda9d7SSteve Wise 16)) | FW_WR_FLOWID(ep->hwtid)); 381cfdda9d7SSteve Wise 382cfdda9d7SSteve Wise flowc->mnemval[0].mnemonic = FW_FLOWC_MNEM_PFNVFN; 38394788657SSteve Wise flowc->mnemval[0].val = cpu_to_be32(PCI_FUNC(ep->com.dev->rdev.lldi.pdev->devfn) << 8); 384cfdda9d7SSteve Wise flowc->mnemval[1].mnemonic = FW_FLOWC_MNEM_CH; 385cfdda9d7SSteve Wise flowc->mnemval[1].val = cpu_to_be32(ep->tx_chan); 386cfdda9d7SSteve Wise flowc->mnemval[2].mnemonic = FW_FLOWC_MNEM_PORT; 387cfdda9d7SSteve Wise flowc->mnemval[2].val = cpu_to_be32(ep->tx_chan); 388cfdda9d7SSteve Wise flowc->mnemval[3].mnemonic = FW_FLOWC_MNEM_IQID; 389cfdda9d7SSteve Wise flowc->mnemval[3].val = cpu_to_be32(ep->rss_qid); 390cfdda9d7SSteve Wise flowc->mnemval[4].mnemonic = FW_FLOWC_MNEM_SNDNXT; 391cfdda9d7SSteve Wise flowc->mnemval[4].val = cpu_to_be32(ep->snd_seq); 392cfdda9d7SSteve Wise flowc->mnemval[5].mnemonic = FW_FLOWC_MNEM_RCVNXT; 393cfdda9d7SSteve Wise flowc->mnemval[5].val = cpu_to_be32(ep->rcv_seq); 394cfdda9d7SSteve Wise flowc->mnemval[6].mnemonic = FW_FLOWC_MNEM_SNDBUF; 395cfdda9d7SSteve Wise flowc->mnemval[6].val = cpu_to_be32(snd_win); 396cfdda9d7SSteve Wise flowc->mnemval[7].mnemonic = FW_FLOWC_MNEM_MSS; 397cfdda9d7SSteve Wise flowc->mnemval[7].val = cpu_to_be32(ep->emss); 398cfdda9d7SSteve Wise /* Pad WR to 16 byte boundary */ 399cfdda9d7SSteve Wise flowc->mnemval[8].mnemonic = 0; 400cfdda9d7SSteve Wise flowc->mnemval[8].val = 0; 401cfdda9d7SSteve Wise for (i = 0; i < 9; i++) { 402cfdda9d7SSteve Wise flowc->mnemval[i].r4[0] = 0; 403cfdda9d7SSteve Wise flowc->mnemval[i].r4[1] = 0; 404cfdda9d7SSteve Wise flowc->mnemval[i].r4[2] = 0; 405cfdda9d7SSteve Wise } 406cfdda9d7SSteve Wise 407cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); 408cfdda9d7SSteve Wise c4iw_ofld_send(&ep->com.dev->rdev, skb); 409cfdda9d7SSteve Wise } 410cfdda9d7SSteve Wise 411cfdda9d7SSteve Wise static int send_halfclose(struct c4iw_ep *ep, gfp_t gfp) 412cfdda9d7SSteve Wise { 413cfdda9d7SSteve Wise struct cpl_close_con_req *req; 414cfdda9d7SSteve Wise struct sk_buff *skb; 415cfdda9d7SSteve Wise int wrlen = roundup(sizeof *req, 16); 416cfdda9d7SSteve Wise 417cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 418cfdda9d7SSteve Wise skb = get_skb(NULL, wrlen, gfp); 419cfdda9d7SSteve Wise if (!skb) { 420cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - failed to alloc skb\n", __func__); 421cfdda9d7SSteve Wise return -ENOMEM; 422cfdda9d7SSteve Wise } 423cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); 424cfdda9d7SSteve Wise t4_set_arp_err_handler(skb, NULL, arp_failure_discard); 425cfdda9d7SSteve Wise req = (struct cpl_close_con_req *) skb_put(skb, wrlen); 426cfdda9d7SSteve Wise memset(req, 0, wrlen); 427cfdda9d7SSteve Wise INIT_TP_WR(req, ep->hwtid); 428cfdda9d7SSteve Wise OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, 429cfdda9d7SSteve Wise ep->hwtid)); 430cfdda9d7SSteve Wise return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); 431cfdda9d7SSteve Wise } 432cfdda9d7SSteve Wise 433cfdda9d7SSteve Wise static int send_abort(struct c4iw_ep *ep, struct sk_buff *skb, gfp_t gfp) 434cfdda9d7SSteve Wise { 435cfdda9d7SSteve Wise struct cpl_abort_req *req; 436cfdda9d7SSteve Wise int wrlen = roundup(sizeof *req, 16); 437cfdda9d7SSteve Wise 438cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 439cfdda9d7SSteve Wise skb = get_skb(skb, wrlen, gfp); 440cfdda9d7SSteve Wise if (!skb) { 441cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - failed to alloc skb.\n", 442cfdda9d7SSteve Wise __func__); 443cfdda9d7SSteve Wise return -ENOMEM; 444cfdda9d7SSteve Wise } 445cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); 446cfdda9d7SSteve Wise t4_set_arp_err_handler(skb, &ep->com.dev->rdev, abort_arp_failure); 447cfdda9d7SSteve Wise req = (struct cpl_abort_req *) skb_put(skb, wrlen); 448cfdda9d7SSteve Wise memset(req, 0, wrlen); 449cfdda9d7SSteve Wise INIT_TP_WR(req, ep->hwtid); 450cfdda9d7SSteve Wise OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_REQ, ep->hwtid)); 451cfdda9d7SSteve Wise req->cmd = CPL_ABORT_SEND_RST; 452cfdda9d7SSteve Wise return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); 453cfdda9d7SSteve Wise } 454cfdda9d7SSteve Wise 455cfdda9d7SSteve Wise static int send_connect(struct c4iw_ep *ep) 456cfdda9d7SSteve Wise { 457cfdda9d7SSteve Wise struct cpl_act_open_req *req; 458cfdda9d7SSteve Wise struct sk_buff *skb; 459cfdda9d7SSteve Wise u64 opt0; 460cfdda9d7SSteve Wise u32 opt2; 461cfdda9d7SSteve Wise unsigned int mtu_idx; 462cfdda9d7SSteve Wise int wscale; 463cfdda9d7SSteve Wise int wrlen = roundup(sizeof *req, 16); 464cfdda9d7SSteve Wise 465cfdda9d7SSteve Wise PDBG("%s ep %p atid %u\n", __func__, ep, ep->atid); 466cfdda9d7SSteve Wise 467cfdda9d7SSteve Wise skb = get_skb(NULL, wrlen, GFP_KERNEL); 468cfdda9d7SSteve Wise if (!skb) { 469cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - failed to alloc skb.\n", 470cfdda9d7SSteve Wise __func__); 471cfdda9d7SSteve Wise return -ENOMEM; 472cfdda9d7SSteve Wise } 473d4f1a5c6SSteve Wise set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx); 474cfdda9d7SSteve Wise 475cfdda9d7SSteve Wise cxgb4_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx); 476cfdda9d7SSteve Wise wscale = compute_wscale(rcv_win); 477cfdda9d7SSteve Wise opt0 = KEEP_ALIVE(1) | 478ba6d3925SSteve Wise DELACK(1) | 479cfdda9d7SSteve Wise WND_SCALE(wscale) | 480cfdda9d7SSteve Wise MSS_IDX(mtu_idx) | 481cfdda9d7SSteve Wise L2T_IDX(ep->l2t->idx) | 482cfdda9d7SSteve Wise TX_CHAN(ep->tx_chan) | 483cfdda9d7SSteve Wise SMAC_SEL(ep->smac_idx) | 484cfdda9d7SSteve Wise DSCP(ep->tos) | 485cfdda9d7SSteve Wise RCV_BUFSIZ(rcv_win>>10); 486cfdda9d7SSteve Wise opt2 = RX_CHANNEL(0) | 487cfdda9d7SSteve Wise RSS_QUEUE_VALID | RSS_QUEUE(ep->rss_qid); 488cfdda9d7SSteve Wise if (enable_tcp_timestamps) 489cfdda9d7SSteve Wise opt2 |= TSTAMPS_EN(1); 490cfdda9d7SSteve Wise if (enable_tcp_sack) 491cfdda9d7SSteve Wise opt2 |= SACK_EN(1); 492cfdda9d7SSteve Wise if (wscale && enable_tcp_window_scaling) 493cfdda9d7SSteve Wise opt2 |= WND_SCALE_EN(1); 494cfdda9d7SSteve Wise t4_set_arp_err_handler(skb, NULL, act_open_req_arp_failure); 495cfdda9d7SSteve Wise 496cfdda9d7SSteve Wise req = (struct cpl_act_open_req *) skb_put(skb, wrlen); 497cfdda9d7SSteve Wise INIT_TP_WR(req, 0); 498cfdda9d7SSteve Wise OPCODE_TID(req) = cpu_to_be32( 499cfdda9d7SSteve Wise MK_OPCODE_TID(CPL_ACT_OPEN_REQ, ((ep->rss_qid<<14)|ep->atid))); 500cfdda9d7SSteve Wise req->local_port = ep->com.local_addr.sin_port; 501cfdda9d7SSteve Wise req->peer_port = ep->com.remote_addr.sin_port; 502cfdda9d7SSteve Wise req->local_ip = ep->com.local_addr.sin_addr.s_addr; 503cfdda9d7SSteve Wise req->peer_ip = ep->com.remote_addr.sin_addr.s_addr; 504cfdda9d7SSteve Wise req->opt0 = cpu_to_be64(opt0); 505cfdda9d7SSteve Wise req->params = 0; 506cfdda9d7SSteve Wise req->opt2 = cpu_to_be32(opt2); 507cfdda9d7SSteve Wise return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); 508cfdda9d7SSteve Wise } 509cfdda9d7SSteve Wise 510cfdda9d7SSteve Wise static void send_mpa_req(struct c4iw_ep *ep, struct sk_buff *skb) 511cfdda9d7SSteve Wise { 512cfdda9d7SSteve Wise int mpalen, wrlen; 513cfdda9d7SSteve Wise struct fw_ofld_tx_data_wr *req; 514cfdda9d7SSteve Wise struct mpa_message *mpa; 515cfdda9d7SSteve Wise 516cfdda9d7SSteve Wise PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); 517cfdda9d7SSteve Wise 518cfdda9d7SSteve Wise BUG_ON(skb_cloned(skb)); 519cfdda9d7SSteve Wise 520cfdda9d7SSteve Wise mpalen = sizeof(*mpa) + ep->plen; 521cfdda9d7SSteve Wise wrlen = roundup(mpalen + sizeof *req, 16); 522cfdda9d7SSteve Wise skb = get_skb(skb, wrlen, GFP_KERNEL); 523cfdda9d7SSteve Wise if (!skb) { 524cfdda9d7SSteve Wise connect_reply_upcall(ep, -ENOMEM); 525cfdda9d7SSteve Wise return; 526cfdda9d7SSteve Wise } 527cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); 528cfdda9d7SSteve Wise 529cfdda9d7SSteve Wise req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen); 530cfdda9d7SSteve Wise memset(req, 0, wrlen); 531cfdda9d7SSteve Wise req->op_to_immdlen = cpu_to_be32( 532cfdda9d7SSteve Wise FW_WR_OP(FW_OFLD_TX_DATA_WR) | 533cfdda9d7SSteve Wise FW_WR_COMPL(1) | 534cfdda9d7SSteve Wise FW_WR_IMMDLEN(mpalen)); 535cfdda9d7SSteve Wise req->flowid_len16 = cpu_to_be32( 536cfdda9d7SSteve Wise FW_WR_FLOWID(ep->hwtid) | 537cfdda9d7SSteve Wise FW_WR_LEN16(wrlen >> 4)); 538cfdda9d7SSteve Wise req->plen = cpu_to_be32(mpalen); 539cfdda9d7SSteve Wise req->tunnel_to_proxy = cpu_to_be32( 540cfdda9d7SSteve Wise FW_OFLD_TX_DATA_WR_FLUSH(1) | 541cfdda9d7SSteve Wise FW_OFLD_TX_DATA_WR_SHOVE(1)); 542cfdda9d7SSteve Wise 543cfdda9d7SSteve Wise mpa = (struct mpa_message *)(req + 1); 544cfdda9d7SSteve Wise memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)); 545cfdda9d7SSteve Wise mpa->flags = (crc_enabled ? MPA_CRC : 0) | 546cfdda9d7SSteve Wise (markers_enabled ? MPA_MARKERS : 0); 547cfdda9d7SSteve Wise mpa->private_data_size = htons(ep->plen); 548cfdda9d7SSteve Wise mpa->revision = mpa_rev; 549cfdda9d7SSteve Wise 550cfdda9d7SSteve Wise if (ep->plen) 551cfdda9d7SSteve Wise memcpy(mpa->private_data, ep->mpa_pkt + sizeof(*mpa), ep->plen); 552cfdda9d7SSteve Wise 553cfdda9d7SSteve Wise /* 554cfdda9d7SSteve Wise * Reference the mpa skb. This ensures the data area 555cfdda9d7SSteve Wise * will remain in memory until the hw acks the tx. 556cfdda9d7SSteve Wise * Function fw4_ack() will deref it. 557cfdda9d7SSteve Wise */ 558cfdda9d7SSteve Wise skb_get(skb); 559cfdda9d7SSteve Wise t4_set_arp_err_handler(skb, NULL, arp_failure_discard); 560cfdda9d7SSteve Wise BUG_ON(ep->mpa_skb); 561cfdda9d7SSteve Wise ep->mpa_skb = skb; 562cfdda9d7SSteve Wise c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); 563cfdda9d7SSteve Wise start_ep_timer(ep); 564cfdda9d7SSteve Wise state_set(&ep->com, MPA_REQ_SENT); 565cfdda9d7SSteve Wise ep->mpa_attr.initiator = 1; 566cfdda9d7SSteve Wise return; 567cfdda9d7SSteve Wise } 568cfdda9d7SSteve Wise 569cfdda9d7SSteve Wise static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen) 570cfdda9d7SSteve Wise { 571cfdda9d7SSteve Wise int mpalen, wrlen; 572cfdda9d7SSteve Wise struct fw_ofld_tx_data_wr *req; 573cfdda9d7SSteve Wise struct mpa_message *mpa; 574cfdda9d7SSteve Wise struct sk_buff *skb; 575cfdda9d7SSteve Wise 576cfdda9d7SSteve Wise PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); 577cfdda9d7SSteve Wise 578cfdda9d7SSteve Wise mpalen = sizeof(*mpa) + plen; 579cfdda9d7SSteve Wise wrlen = roundup(mpalen + sizeof *req, 16); 580cfdda9d7SSteve Wise 581cfdda9d7SSteve Wise skb = get_skb(NULL, wrlen, GFP_KERNEL); 582cfdda9d7SSteve Wise if (!skb) { 583cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__); 584cfdda9d7SSteve Wise return -ENOMEM; 585cfdda9d7SSteve Wise } 586cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); 587cfdda9d7SSteve Wise 588cfdda9d7SSteve Wise req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen); 589cfdda9d7SSteve Wise memset(req, 0, wrlen); 590cfdda9d7SSteve Wise req->op_to_immdlen = cpu_to_be32( 591cfdda9d7SSteve Wise FW_WR_OP(FW_OFLD_TX_DATA_WR) | 592cfdda9d7SSteve Wise FW_WR_COMPL(1) | 593cfdda9d7SSteve Wise FW_WR_IMMDLEN(mpalen)); 594cfdda9d7SSteve Wise req->flowid_len16 = cpu_to_be32( 595cfdda9d7SSteve Wise FW_WR_FLOWID(ep->hwtid) | 596cfdda9d7SSteve Wise FW_WR_LEN16(wrlen >> 4)); 597cfdda9d7SSteve Wise req->plen = cpu_to_be32(mpalen); 598cfdda9d7SSteve Wise req->tunnel_to_proxy = cpu_to_be32( 599cfdda9d7SSteve Wise FW_OFLD_TX_DATA_WR_FLUSH(1) | 600cfdda9d7SSteve Wise FW_OFLD_TX_DATA_WR_SHOVE(1)); 601cfdda9d7SSteve Wise 602cfdda9d7SSteve Wise mpa = (struct mpa_message *)(req + 1); 603cfdda9d7SSteve Wise memset(mpa, 0, sizeof(*mpa)); 604cfdda9d7SSteve Wise memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 605cfdda9d7SSteve Wise mpa->flags = MPA_REJECT; 606cfdda9d7SSteve Wise mpa->revision = mpa_rev; 607cfdda9d7SSteve Wise mpa->private_data_size = htons(plen); 608cfdda9d7SSteve Wise if (plen) 609cfdda9d7SSteve Wise memcpy(mpa->private_data, pdata, plen); 610cfdda9d7SSteve Wise 611cfdda9d7SSteve Wise /* 612cfdda9d7SSteve Wise * Reference the mpa skb again. This ensures the data area 613cfdda9d7SSteve Wise * will remain in memory until the hw acks the tx. 614cfdda9d7SSteve Wise * Function fw4_ack() will deref it. 615cfdda9d7SSteve Wise */ 616cfdda9d7SSteve Wise skb_get(skb); 617cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); 618cfdda9d7SSteve Wise t4_set_arp_err_handler(skb, NULL, arp_failure_discard); 619cfdda9d7SSteve Wise BUG_ON(ep->mpa_skb); 620cfdda9d7SSteve Wise ep->mpa_skb = skb; 621cfdda9d7SSteve Wise return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); 622cfdda9d7SSteve Wise } 623cfdda9d7SSteve Wise 624cfdda9d7SSteve Wise static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen) 625cfdda9d7SSteve Wise { 626cfdda9d7SSteve Wise int mpalen, wrlen; 627cfdda9d7SSteve Wise struct fw_ofld_tx_data_wr *req; 628cfdda9d7SSteve Wise struct mpa_message *mpa; 629cfdda9d7SSteve Wise struct sk_buff *skb; 630cfdda9d7SSteve Wise 631cfdda9d7SSteve Wise PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); 632cfdda9d7SSteve Wise 633cfdda9d7SSteve Wise mpalen = sizeof(*mpa) + plen; 634cfdda9d7SSteve Wise wrlen = roundup(mpalen + sizeof *req, 16); 635cfdda9d7SSteve Wise 636cfdda9d7SSteve Wise skb = get_skb(NULL, wrlen, GFP_KERNEL); 637cfdda9d7SSteve Wise if (!skb) { 638cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__); 639cfdda9d7SSteve Wise return -ENOMEM; 640cfdda9d7SSteve Wise } 641cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); 642cfdda9d7SSteve Wise 643cfdda9d7SSteve Wise req = (struct fw_ofld_tx_data_wr *) skb_put(skb, wrlen); 644cfdda9d7SSteve Wise memset(req, 0, wrlen); 645cfdda9d7SSteve Wise req->op_to_immdlen = cpu_to_be32( 646cfdda9d7SSteve Wise FW_WR_OP(FW_OFLD_TX_DATA_WR) | 647cfdda9d7SSteve Wise FW_WR_COMPL(1) | 648cfdda9d7SSteve Wise FW_WR_IMMDLEN(mpalen)); 649cfdda9d7SSteve Wise req->flowid_len16 = cpu_to_be32( 650cfdda9d7SSteve Wise FW_WR_FLOWID(ep->hwtid) | 651cfdda9d7SSteve Wise FW_WR_LEN16(wrlen >> 4)); 652cfdda9d7SSteve Wise req->plen = cpu_to_be32(mpalen); 653cfdda9d7SSteve Wise req->tunnel_to_proxy = cpu_to_be32( 654cfdda9d7SSteve Wise FW_OFLD_TX_DATA_WR_FLUSH(1) | 655cfdda9d7SSteve Wise FW_OFLD_TX_DATA_WR_SHOVE(1)); 656cfdda9d7SSteve Wise 657cfdda9d7SSteve Wise mpa = (struct mpa_message *)(req + 1); 658cfdda9d7SSteve Wise memset(mpa, 0, sizeof(*mpa)); 659cfdda9d7SSteve Wise memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); 660cfdda9d7SSteve Wise mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) | 661cfdda9d7SSteve Wise (markers_enabled ? MPA_MARKERS : 0); 662cfdda9d7SSteve Wise mpa->revision = mpa_rev; 663cfdda9d7SSteve Wise mpa->private_data_size = htons(plen); 664cfdda9d7SSteve Wise if (plen) 665cfdda9d7SSteve Wise memcpy(mpa->private_data, pdata, plen); 666cfdda9d7SSteve Wise 667cfdda9d7SSteve Wise /* 668cfdda9d7SSteve Wise * Reference the mpa skb. This ensures the data area 669cfdda9d7SSteve Wise * will remain in memory until the hw acks the tx. 670cfdda9d7SSteve Wise * Function fw4_ack() will deref it. 671cfdda9d7SSteve Wise */ 672cfdda9d7SSteve Wise skb_get(skb); 673cfdda9d7SSteve Wise t4_set_arp_err_handler(skb, NULL, arp_failure_discard); 674cfdda9d7SSteve Wise ep->mpa_skb = skb; 675cfdda9d7SSteve Wise state_set(&ep->com, MPA_REP_SENT); 676cfdda9d7SSteve Wise return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); 677cfdda9d7SSteve Wise } 678cfdda9d7SSteve Wise 679cfdda9d7SSteve Wise static int act_establish(struct c4iw_dev *dev, struct sk_buff *skb) 680cfdda9d7SSteve Wise { 681cfdda9d7SSteve Wise struct c4iw_ep *ep; 682cfdda9d7SSteve Wise struct cpl_act_establish *req = cplhdr(skb); 683cfdda9d7SSteve Wise unsigned int tid = GET_TID(req); 684cfdda9d7SSteve Wise unsigned int atid = GET_TID_TID(ntohl(req->tos_atid)); 685cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 686cfdda9d7SSteve Wise 687cfdda9d7SSteve Wise ep = lookup_atid(t, atid); 688cfdda9d7SSteve Wise 689cfdda9d7SSteve Wise PDBG("%s ep %p tid %u snd_isn %u rcv_isn %u\n", __func__, ep, tid, 690cfdda9d7SSteve Wise be32_to_cpu(req->snd_isn), be32_to_cpu(req->rcv_isn)); 691cfdda9d7SSteve Wise 692cfdda9d7SSteve Wise dst_confirm(ep->dst); 693cfdda9d7SSteve Wise 694cfdda9d7SSteve Wise /* setup the hwtid for this connection */ 695cfdda9d7SSteve Wise ep->hwtid = tid; 696cfdda9d7SSteve Wise cxgb4_insert_tid(t, ep, tid); 697cfdda9d7SSteve Wise 698cfdda9d7SSteve Wise ep->snd_seq = be32_to_cpu(req->snd_isn); 699cfdda9d7SSteve Wise ep->rcv_seq = be32_to_cpu(req->rcv_isn); 700cfdda9d7SSteve Wise 701cfdda9d7SSteve Wise set_emss(ep, ntohs(req->tcp_opt)); 702cfdda9d7SSteve Wise 703cfdda9d7SSteve Wise /* dealloc the atid */ 704cfdda9d7SSteve Wise cxgb4_free_atid(t, atid); 705cfdda9d7SSteve Wise 706cfdda9d7SSteve Wise /* start MPA negotiation */ 707cfdda9d7SSteve Wise send_flowc(ep, NULL); 708cfdda9d7SSteve Wise send_mpa_req(ep, skb); 709cfdda9d7SSteve Wise 710cfdda9d7SSteve Wise return 0; 711cfdda9d7SSteve Wise } 712cfdda9d7SSteve Wise 713cfdda9d7SSteve Wise static void close_complete_upcall(struct c4iw_ep *ep) 714cfdda9d7SSteve Wise { 715cfdda9d7SSteve Wise struct iw_cm_event event; 716cfdda9d7SSteve Wise 717cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 718cfdda9d7SSteve Wise memset(&event, 0, sizeof(event)); 719cfdda9d7SSteve Wise event.event = IW_CM_EVENT_CLOSE; 720cfdda9d7SSteve Wise if (ep->com.cm_id) { 721cfdda9d7SSteve Wise PDBG("close complete delivered ep %p cm_id %p tid %u\n", 722cfdda9d7SSteve Wise ep, ep->com.cm_id, ep->hwtid); 723cfdda9d7SSteve Wise ep->com.cm_id->event_handler(ep->com.cm_id, &event); 724cfdda9d7SSteve Wise ep->com.cm_id->rem_ref(ep->com.cm_id); 725cfdda9d7SSteve Wise ep->com.cm_id = NULL; 726cfdda9d7SSteve Wise ep->com.qp = NULL; 727cfdda9d7SSteve Wise } 728cfdda9d7SSteve Wise } 729cfdda9d7SSteve Wise 730cfdda9d7SSteve Wise static int abort_connection(struct c4iw_ep *ep, struct sk_buff *skb, gfp_t gfp) 731cfdda9d7SSteve Wise { 732cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 733cfdda9d7SSteve Wise close_complete_upcall(ep); 734cfdda9d7SSteve Wise state_set(&ep->com, ABORTING); 735cfdda9d7SSteve Wise return send_abort(ep, skb, gfp); 736cfdda9d7SSteve Wise } 737cfdda9d7SSteve Wise 738cfdda9d7SSteve Wise static void peer_close_upcall(struct c4iw_ep *ep) 739cfdda9d7SSteve Wise { 740cfdda9d7SSteve Wise struct iw_cm_event event; 741cfdda9d7SSteve Wise 742cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 743cfdda9d7SSteve Wise memset(&event, 0, sizeof(event)); 744cfdda9d7SSteve Wise event.event = IW_CM_EVENT_DISCONNECT; 745cfdda9d7SSteve Wise if (ep->com.cm_id) { 746cfdda9d7SSteve Wise PDBG("peer close delivered ep %p cm_id %p tid %u\n", 747cfdda9d7SSteve Wise ep, ep->com.cm_id, ep->hwtid); 748cfdda9d7SSteve Wise ep->com.cm_id->event_handler(ep->com.cm_id, &event); 749cfdda9d7SSteve Wise } 750cfdda9d7SSteve Wise } 751cfdda9d7SSteve Wise 752cfdda9d7SSteve Wise static void peer_abort_upcall(struct c4iw_ep *ep) 753cfdda9d7SSteve Wise { 754cfdda9d7SSteve Wise struct iw_cm_event event; 755cfdda9d7SSteve Wise 756cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 757cfdda9d7SSteve Wise memset(&event, 0, sizeof(event)); 758cfdda9d7SSteve Wise event.event = IW_CM_EVENT_CLOSE; 759cfdda9d7SSteve Wise event.status = -ECONNRESET; 760cfdda9d7SSteve Wise if (ep->com.cm_id) { 761cfdda9d7SSteve Wise PDBG("abort delivered ep %p cm_id %p tid %u\n", ep, 762cfdda9d7SSteve Wise ep->com.cm_id, ep->hwtid); 763cfdda9d7SSteve Wise ep->com.cm_id->event_handler(ep->com.cm_id, &event); 764cfdda9d7SSteve Wise ep->com.cm_id->rem_ref(ep->com.cm_id); 765cfdda9d7SSteve Wise ep->com.cm_id = NULL; 766cfdda9d7SSteve Wise ep->com.qp = NULL; 767cfdda9d7SSteve Wise } 768cfdda9d7SSteve Wise } 769cfdda9d7SSteve Wise 770cfdda9d7SSteve Wise static void connect_reply_upcall(struct c4iw_ep *ep, int status) 771cfdda9d7SSteve Wise { 772cfdda9d7SSteve Wise struct iw_cm_event event; 773cfdda9d7SSteve Wise 774cfdda9d7SSteve Wise PDBG("%s ep %p tid %u status %d\n", __func__, ep, ep->hwtid, status); 775cfdda9d7SSteve Wise memset(&event, 0, sizeof(event)); 776cfdda9d7SSteve Wise event.event = IW_CM_EVENT_CONNECT_REPLY; 777cfdda9d7SSteve Wise event.status = status; 778cfdda9d7SSteve Wise event.local_addr = ep->com.local_addr; 779cfdda9d7SSteve Wise event.remote_addr = ep->com.remote_addr; 780cfdda9d7SSteve Wise 781cfdda9d7SSteve Wise if ((status == 0) || (status == -ECONNREFUSED)) { 782cfdda9d7SSteve Wise event.private_data_len = ep->plen; 783cfdda9d7SSteve Wise event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); 784cfdda9d7SSteve Wise } 78585963e4cSRoland Dreier 786cfdda9d7SSteve Wise PDBG("%s ep %p tid %u status %d\n", __func__, ep, 787cfdda9d7SSteve Wise ep->hwtid, status); 788cfdda9d7SSteve Wise ep->com.cm_id->event_handler(ep->com.cm_id, &event); 78985963e4cSRoland Dreier 790cfdda9d7SSteve Wise if (status < 0) { 791cfdda9d7SSteve Wise ep->com.cm_id->rem_ref(ep->com.cm_id); 792cfdda9d7SSteve Wise ep->com.cm_id = NULL; 793cfdda9d7SSteve Wise ep->com.qp = NULL; 794cfdda9d7SSteve Wise } 795cfdda9d7SSteve Wise } 796cfdda9d7SSteve Wise 797cfdda9d7SSteve Wise static void connect_request_upcall(struct c4iw_ep *ep) 798cfdda9d7SSteve Wise { 799cfdda9d7SSteve Wise struct iw_cm_event event; 800cfdda9d7SSteve Wise 801cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 802cfdda9d7SSteve Wise memset(&event, 0, sizeof(event)); 803cfdda9d7SSteve Wise event.event = IW_CM_EVENT_CONNECT_REQUEST; 804cfdda9d7SSteve Wise event.local_addr = ep->com.local_addr; 805cfdda9d7SSteve Wise event.remote_addr = ep->com.remote_addr; 806cfdda9d7SSteve Wise event.private_data_len = ep->plen; 807cfdda9d7SSteve Wise event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); 808cfdda9d7SSteve Wise event.provider_data = ep; 809cfdda9d7SSteve Wise if (state_read(&ep->parent_ep->com) != DEAD) { 810cfdda9d7SSteve Wise c4iw_get_ep(&ep->com); 811cfdda9d7SSteve Wise ep->parent_ep->com.cm_id->event_handler( 812cfdda9d7SSteve Wise ep->parent_ep->com.cm_id, 813cfdda9d7SSteve Wise &event); 814cfdda9d7SSteve Wise } 815cfdda9d7SSteve Wise c4iw_put_ep(&ep->parent_ep->com); 816cfdda9d7SSteve Wise ep->parent_ep = NULL; 817cfdda9d7SSteve Wise } 818cfdda9d7SSteve Wise 819cfdda9d7SSteve Wise static void established_upcall(struct c4iw_ep *ep) 820cfdda9d7SSteve Wise { 821cfdda9d7SSteve Wise struct iw_cm_event event; 822cfdda9d7SSteve Wise 823cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 824cfdda9d7SSteve Wise memset(&event, 0, sizeof(event)); 825cfdda9d7SSteve Wise event.event = IW_CM_EVENT_ESTABLISHED; 826cfdda9d7SSteve Wise if (ep->com.cm_id) { 827cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 828cfdda9d7SSteve Wise ep->com.cm_id->event_handler(ep->com.cm_id, &event); 829cfdda9d7SSteve Wise } 830cfdda9d7SSteve Wise } 831cfdda9d7SSteve Wise 832cfdda9d7SSteve Wise static int update_rx_credits(struct c4iw_ep *ep, u32 credits) 833cfdda9d7SSteve Wise { 834cfdda9d7SSteve Wise struct cpl_rx_data_ack *req; 835cfdda9d7SSteve Wise struct sk_buff *skb; 836cfdda9d7SSteve Wise int wrlen = roundup(sizeof *req, 16); 837cfdda9d7SSteve Wise 838cfdda9d7SSteve Wise PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits); 839cfdda9d7SSteve Wise skb = get_skb(NULL, wrlen, GFP_KERNEL); 840cfdda9d7SSteve Wise if (!skb) { 841cfdda9d7SSteve Wise printk(KERN_ERR MOD "update_rx_credits - cannot alloc skb!\n"); 842cfdda9d7SSteve Wise return 0; 843cfdda9d7SSteve Wise } 844cfdda9d7SSteve Wise 845cfdda9d7SSteve Wise req = (struct cpl_rx_data_ack *) skb_put(skb, wrlen); 846cfdda9d7SSteve Wise memset(req, 0, wrlen); 847cfdda9d7SSteve Wise INIT_TP_WR(req, ep->hwtid); 848cfdda9d7SSteve Wise OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_RX_DATA_ACK, 849cfdda9d7SSteve Wise ep->hwtid)); 850ba6d3925SSteve Wise req->credit_dack = cpu_to_be32(credits | RX_FORCE_ACK(1) | 851ba6d3925SSteve Wise F_RX_DACK_CHANGE | 852ba6d3925SSteve Wise V_RX_DACK_MODE(dack_mode)); 853d4f1a5c6SSteve Wise set_wr_txq(skb, CPL_PRIORITY_ACK, ep->ctrlq_idx); 854cfdda9d7SSteve Wise c4iw_ofld_send(&ep->com.dev->rdev, skb); 855cfdda9d7SSteve Wise return credits; 856cfdda9d7SSteve Wise } 857cfdda9d7SSteve Wise 858cfdda9d7SSteve Wise static void process_mpa_reply(struct c4iw_ep *ep, struct sk_buff *skb) 859cfdda9d7SSteve Wise { 860cfdda9d7SSteve Wise struct mpa_message *mpa; 861cfdda9d7SSteve Wise u16 plen; 862cfdda9d7SSteve Wise struct c4iw_qp_attributes attrs; 863cfdda9d7SSteve Wise enum c4iw_qp_attr_mask mask; 864cfdda9d7SSteve Wise int err; 865cfdda9d7SSteve Wise 866cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 867cfdda9d7SSteve Wise 868cfdda9d7SSteve Wise /* 869cfdda9d7SSteve Wise * Stop mpa timer. If it expired, then the state has 870cfdda9d7SSteve Wise * changed and we bail since ep_timeout already aborted 871cfdda9d7SSteve Wise * the connection. 872cfdda9d7SSteve Wise */ 873cfdda9d7SSteve Wise stop_ep_timer(ep); 874cfdda9d7SSteve Wise if (state_read(&ep->com) != MPA_REQ_SENT) 875cfdda9d7SSteve Wise return; 876cfdda9d7SSteve Wise 877cfdda9d7SSteve Wise /* 878cfdda9d7SSteve Wise * If we get more than the supported amount of private data 879cfdda9d7SSteve Wise * then we must fail this connection. 880cfdda9d7SSteve Wise */ 881cfdda9d7SSteve Wise if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) { 882cfdda9d7SSteve Wise err = -EINVAL; 883cfdda9d7SSteve Wise goto err; 884cfdda9d7SSteve Wise } 885cfdda9d7SSteve Wise 886cfdda9d7SSteve Wise /* 887cfdda9d7SSteve Wise * copy the new data into our accumulation buffer. 888cfdda9d7SSteve Wise */ 889cfdda9d7SSteve Wise skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]), 890cfdda9d7SSteve Wise skb->len); 891cfdda9d7SSteve Wise ep->mpa_pkt_len += skb->len; 892cfdda9d7SSteve Wise 893cfdda9d7SSteve Wise /* 894cfdda9d7SSteve Wise * if we don't even have the mpa message, then bail. 895cfdda9d7SSteve Wise */ 896cfdda9d7SSteve Wise if (ep->mpa_pkt_len < sizeof(*mpa)) 897cfdda9d7SSteve Wise return; 898cfdda9d7SSteve Wise mpa = (struct mpa_message *) ep->mpa_pkt; 899cfdda9d7SSteve Wise 900cfdda9d7SSteve Wise /* Validate MPA header. */ 901cfdda9d7SSteve Wise if (mpa->revision != mpa_rev) { 902cfdda9d7SSteve Wise err = -EPROTO; 903cfdda9d7SSteve Wise goto err; 904cfdda9d7SSteve Wise } 905cfdda9d7SSteve Wise if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) { 906cfdda9d7SSteve Wise err = -EPROTO; 907cfdda9d7SSteve Wise goto err; 908cfdda9d7SSteve Wise } 909cfdda9d7SSteve Wise 910cfdda9d7SSteve Wise plen = ntohs(mpa->private_data_size); 911cfdda9d7SSteve Wise 912cfdda9d7SSteve Wise /* 913cfdda9d7SSteve Wise * Fail if there's too much private data. 914cfdda9d7SSteve Wise */ 915cfdda9d7SSteve Wise if (plen > MPA_MAX_PRIVATE_DATA) { 916cfdda9d7SSteve Wise err = -EPROTO; 917cfdda9d7SSteve Wise goto err; 918cfdda9d7SSteve Wise } 919cfdda9d7SSteve Wise 920cfdda9d7SSteve Wise /* 921cfdda9d7SSteve Wise * If plen does not account for pkt size 922cfdda9d7SSteve Wise */ 923cfdda9d7SSteve Wise if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { 924cfdda9d7SSteve Wise err = -EPROTO; 925cfdda9d7SSteve Wise goto err; 926cfdda9d7SSteve Wise } 927cfdda9d7SSteve Wise 928cfdda9d7SSteve Wise ep->plen = (u8) plen; 929cfdda9d7SSteve Wise 930cfdda9d7SSteve Wise /* 931cfdda9d7SSteve Wise * If we don't have all the pdata yet, then bail. 932cfdda9d7SSteve Wise * We'll continue process when more data arrives. 933cfdda9d7SSteve Wise */ 934cfdda9d7SSteve Wise if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) 935cfdda9d7SSteve Wise return; 936cfdda9d7SSteve Wise 937cfdda9d7SSteve Wise if (mpa->flags & MPA_REJECT) { 938cfdda9d7SSteve Wise err = -ECONNREFUSED; 939cfdda9d7SSteve Wise goto err; 940cfdda9d7SSteve Wise } 941cfdda9d7SSteve Wise 942cfdda9d7SSteve Wise /* 943cfdda9d7SSteve Wise * If we get here we have accumulated the entire mpa 944cfdda9d7SSteve Wise * start reply message including private data. And 945cfdda9d7SSteve Wise * the MPA header is valid. 946cfdda9d7SSteve Wise */ 947cfdda9d7SSteve Wise state_set(&ep->com, FPDU_MODE); 948cfdda9d7SSteve Wise ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 949cfdda9d7SSteve Wise ep->mpa_attr.recv_marker_enabled = markers_enabled; 950cfdda9d7SSteve Wise ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 951cfdda9d7SSteve Wise ep->mpa_attr.version = mpa_rev; 952cfdda9d7SSteve Wise ep->mpa_attr.p2p_type = peer2peer ? p2p_type : 953cfdda9d7SSteve Wise FW_RI_INIT_P2PTYPE_DISABLED; 954cfdda9d7SSteve Wise PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " 955cfdda9d7SSteve Wise "xmit_marker_enabled=%d, version=%d\n", __func__, 956cfdda9d7SSteve Wise ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, 957cfdda9d7SSteve Wise ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version); 958cfdda9d7SSteve Wise 959cfdda9d7SSteve Wise attrs.mpa_attr = ep->mpa_attr; 960cfdda9d7SSteve Wise attrs.max_ird = ep->ird; 961cfdda9d7SSteve Wise attrs.max_ord = ep->ord; 962cfdda9d7SSteve Wise attrs.llp_stream_handle = ep; 963cfdda9d7SSteve Wise attrs.next_state = C4IW_QP_STATE_RTS; 964cfdda9d7SSteve Wise 965cfdda9d7SSteve Wise mask = C4IW_QP_ATTR_NEXT_STATE | 966cfdda9d7SSteve Wise C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR | 967cfdda9d7SSteve Wise C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD; 968cfdda9d7SSteve Wise 969cfdda9d7SSteve Wise /* bind QP and TID with INIT_WR */ 970cfdda9d7SSteve Wise err = c4iw_modify_qp(ep->com.qp->rhp, 971cfdda9d7SSteve Wise ep->com.qp, mask, &attrs, 1); 972cfdda9d7SSteve Wise if (err) 973cfdda9d7SSteve Wise goto err; 974cfdda9d7SSteve Wise goto out; 975cfdda9d7SSteve Wise err: 976b21ef16aSSteve Wise state_set(&ep->com, ABORTING); 977b21ef16aSSteve Wise send_abort(ep, skb, GFP_KERNEL); 978cfdda9d7SSteve Wise out: 979cfdda9d7SSteve Wise connect_reply_upcall(ep, err); 980cfdda9d7SSteve Wise return; 981cfdda9d7SSteve Wise } 982cfdda9d7SSteve Wise 983cfdda9d7SSteve Wise static void process_mpa_request(struct c4iw_ep *ep, struct sk_buff *skb) 984cfdda9d7SSteve Wise { 985cfdda9d7SSteve Wise struct mpa_message *mpa; 986cfdda9d7SSteve Wise u16 plen; 987cfdda9d7SSteve Wise 988cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 989cfdda9d7SSteve Wise 990cfdda9d7SSteve Wise if (state_read(&ep->com) != MPA_REQ_WAIT) 991cfdda9d7SSteve Wise return; 992cfdda9d7SSteve Wise 993cfdda9d7SSteve Wise /* 994cfdda9d7SSteve Wise * If we get more than the supported amount of private data 995cfdda9d7SSteve Wise * then we must fail this connection. 996cfdda9d7SSteve Wise */ 997cfdda9d7SSteve Wise if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) { 998cfdda9d7SSteve Wise stop_ep_timer(ep); 999cfdda9d7SSteve Wise abort_connection(ep, skb, GFP_KERNEL); 1000cfdda9d7SSteve Wise return; 1001cfdda9d7SSteve Wise } 1002cfdda9d7SSteve Wise 1003cfdda9d7SSteve Wise PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__); 1004cfdda9d7SSteve Wise 1005cfdda9d7SSteve Wise /* 1006cfdda9d7SSteve Wise * Copy the new data into our accumulation buffer. 1007cfdda9d7SSteve Wise */ 1008cfdda9d7SSteve Wise skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]), 1009cfdda9d7SSteve Wise skb->len); 1010cfdda9d7SSteve Wise ep->mpa_pkt_len += skb->len; 1011cfdda9d7SSteve Wise 1012cfdda9d7SSteve Wise /* 1013cfdda9d7SSteve Wise * If we don't even have the mpa message, then bail. 1014cfdda9d7SSteve Wise * We'll continue process when more data arrives. 1015cfdda9d7SSteve Wise */ 1016cfdda9d7SSteve Wise if (ep->mpa_pkt_len < sizeof(*mpa)) 1017cfdda9d7SSteve Wise return; 1018cfdda9d7SSteve Wise 1019cfdda9d7SSteve Wise PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__); 1020cfdda9d7SSteve Wise stop_ep_timer(ep); 1021cfdda9d7SSteve Wise mpa = (struct mpa_message *) ep->mpa_pkt; 1022cfdda9d7SSteve Wise 1023cfdda9d7SSteve Wise /* 1024cfdda9d7SSteve Wise * Validate MPA Header. 1025cfdda9d7SSteve Wise */ 1026cfdda9d7SSteve Wise if (mpa->revision != mpa_rev) { 1027cfdda9d7SSteve Wise abort_connection(ep, skb, GFP_KERNEL); 1028cfdda9d7SSteve Wise return; 1029cfdda9d7SSteve Wise } 1030cfdda9d7SSteve Wise 1031cfdda9d7SSteve Wise if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) { 1032cfdda9d7SSteve Wise abort_connection(ep, skb, GFP_KERNEL); 1033cfdda9d7SSteve Wise return; 1034cfdda9d7SSteve Wise } 1035cfdda9d7SSteve Wise 1036cfdda9d7SSteve Wise plen = ntohs(mpa->private_data_size); 1037cfdda9d7SSteve Wise 1038cfdda9d7SSteve Wise /* 1039cfdda9d7SSteve Wise * Fail if there's too much private data. 1040cfdda9d7SSteve Wise */ 1041cfdda9d7SSteve Wise if (plen > MPA_MAX_PRIVATE_DATA) { 1042cfdda9d7SSteve Wise abort_connection(ep, skb, GFP_KERNEL); 1043cfdda9d7SSteve Wise return; 1044cfdda9d7SSteve Wise } 1045cfdda9d7SSteve Wise 1046cfdda9d7SSteve Wise /* 1047cfdda9d7SSteve Wise * If plen does not account for pkt size 1048cfdda9d7SSteve Wise */ 1049cfdda9d7SSteve Wise if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { 1050cfdda9d7SSteve Wise abort_connection(ep, skb, GFP_KERNEL); 1051cfdda9d7SSteve Wise return; 1052cfdda9d7SSteve Wise } 1053cfdda9d7SSteve Wise ep->plen = (u8) plen; 1054cfdda9d7SSteve Wise 1055cfdda9d7SSteve Wise /* 1056cfdda9d7SSteve Wise * If we don't have all the pdata yet, then bail. 1057cfdda9d7SSteve Wise */ 1058cfdda9d7SSteve Wise if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) 1059cfdda9d7SSteve Wise return; 1060cfdda9d7SSteve Wise 1061cfdda9d7SSteve Wise /* 1062cfdda9d7SSteve Wise * If we get here we have accumulated the entire mpa 1063cfdda9d7SSteve Wise * start reply message including private data. 1064cfdda9d7SSteve Wise */ 1065cfdda9d7SSteve Wise ep->mpa_attr.initiator = 0; 1066cfdda9d7SSteve Wise ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; 1067cfdda9d7SSteve Wise ep->mpa_attr.recv_marker_enabled = markers_enabled; 1068cfdda9d7SSteve Wise ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; 1069cfdda9d7SSteve Wise ep->mpa_attr.version = mpa_rev; 1070cfdda9d7SSteve Wise ep->mpa_attr.p2p_type = peer2peer ? p2p_type : 1071cfdda9d7SSteve Wise FW_RI_INIT_P2PTYPE_DISABLED; 1072cfdda9d7SSteve Wise PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " 1073cfdda9d7SSteve Wise "xmit_marker_enabled=%d, version=%d p2p_type=%d\n", __func__, 1074cfdda9d7SSteve Wise ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, 1075cfdda9d7SSteve Wise ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, 1076cfdda9d7SSteve Wise ep->mpa_attr.p2p_type); 1077cfdda9d7SSteve Wise 1078cfdda9d7SSteve Wise state_set(&ep->com, MPA_REQ_RCVD); 1079cfdda9d7SSteve Wise 1080cfdda9d7SSteve Wise /* drive upcall */ 1081cfdda9d7SSteve Wise connect_request_upcall(ep); 1082cfdda9d7SSteve Wise return; 1083cfdda9d7SSteve Wise } 1084cfdda9d7SSteve Wise 1085cfdda9d7SSteve Wise static int rx_data(struct c4iw_dev *dev, struct sk_buff *skb) 1086cfdda9d7SSteve Wise { 1087cfdda9d7SSteve Wise struct c4iw_ep *ep; 1088cfdda9d7SSteve Wise struct cpl_rx_data *hdr = cplhdr(skb); 1089cfdda9d7SSteve Wise unsigned int dlen = ntohs(hdr->len); 1090cfdda9d7SSteve Wise unsigned int tid = GET_TID(hdr); 1091cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 1092cfdda9d7SSteve Wise 1093cfdda9d7SSteve Wise ep = lookup_tid(t, tid); 1094cfdda9d7SSteve Wise PDBG("%s ep %p tid %u dlen %u\n", __func__, ep, ep->hwtid, dlen); 1095cfdda9d7SSteve Wise skb_pull(skb, sizeof(*hdr)); 1096cfdda9d7SSteve Wise skb_trim(skb, dlen); 1097cfdda9d7SSteve Wise 1098cfdda9d7SSteve Wise ep->rcv_seq += dlen; 1099cfdda9d7SSteve Wise BUG_ON(ep->rcv_seq != (ntohl(hdr->seq) + dlen)); 1100cfdda9d7SSteve Wise 1101cfdda9d7SSteve Wise /* update RX credits */ 1102cfdda9d7SSteve Wise update_rx_credits(ep, dlen); 1103cfdda9d7SSteve Wise 1104cfdda9d7SSteve Wise switch (state_read(&ep->com)) { 1105cfdda9d7SSteve Wise case MPA_REQ_SENT: 1106cfdda9d7SSteve Wise process_mpa_reply(ep, skb); 1107cfdda9d7SSteve Wise break; 1108cfdda9d7SSteve Wise case MPA_REQ_WAIT: 1109cfdda9d7SSteve Wise process_mpa_request(ep, skb); 1110cfdda9d7SSteve Wise break; 1111cfdda9d7SSteve Wise case MPA_REP_SENT: 1112cfdda9d7SSteve Wise break; 1113cfdda9d7SSteve Wise default: 1114cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s Unexpected streaming data." 1115cfdda9d7SSteve Wise " ep %p state %d tid %u\n", 1116cfdda9d7SSteve Wise __func__, ep, state_read(&ep->com), ep->hwtid); 1117cfdda9d7SSteve Wise 1118cfdda9d7SSteve Wise /* 1119cfdda9d7SSteve Wise * The ep will timeout and inform the ULP of the failure. 1120cfdda9d7SSteve Wise * See ep_timeout(). 1121cfdda9d7SSteve Wise */ 1122cfdda9d7SSteve Wise break; 1123cfdda9d7SSteve Wise } 1124cfdda9d7SSteve Wise return 0; 1125cfdda9d7SSteve Wise } 1126cfdda9d7SSteve Wise 1127cfdda9d7SSteve Wise static int abort_rpl(struct c4iw_dev *dev, struct sk_buff *skb) 1128cfdda9d7SSteve Wise { 1129cfdda9d7SSteve Wise struct c4iw_ep *ep; 1130cfdda9d7SSteve Wise struct cpl_abort_rpl_rss *rpl = cplhdr(skb); 1131cfdda9d7SSteve Wise int release = 0; 1132cfdda9d7SSteve Wise unsigned int tid = GET_TID(rpl); 1133cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 1134cfdda9d7SSteve Wise 1135cfdda9d7SSteve Wise ep = lookup_tid(t, tid); 1136cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 1137cfdda9d7SSteve Wise BUG_ON(!ep); 11382f5b48c3SSteve Wise mutex_lock(&ep->com.mutex); 1139cfdda9d7SSteve Wise switch (ep->com.state) { 1140cfdda9d7SSteve Wise case ABORTING: 1141cfdda9d7SSteve Wise __state_set(&ep->com, DEAD); 1142cfdda9d7SSteve Wise release = 1; 1143cfdda9d7SSteve Wise break; 1144cfdda9d7SSteve Wise default: 1145cfdda9d7SSteve Wise printk(KERN_ERR "%s ep %p state %d\n", 1146cfdda9d7SSteve Wise __func__, ep, ep->com.state); 1147cfdda9d7SSteve Wise break; 1148cfdda9d7SSteve Wise } 11492f5b48c3SSteve Wise mutex_unlock(&ep->com.mutex); 1150cfdda9d7SSteve Wise 1151cfdda9d7SSteve Wise if (release) 1152cfdda9d7SSteve Wise release_ep_resources(ep); 1153cfdda9d7SSteve Wise return 0; 1154cfdda9d7SSteve Wise } 1155cfdda9d7SSteve Wise 1156cfdda9d7SSteve Wise /* 1157cfdda9d7SSteve Wise * Return whether a failed active open has allocated a TID 1158cfdda9d7SSteve Wise */ 1159cfdda9d7SSteve Wise static inline int act_open_has_tid(int status) 1160cfdda9d7SSteve Wise { 1161cfdda9d7SSteve Wise return status != CPL_ERR_TCAM_FULL && status != CPL_ERR_CONN_EXIST && 1162cfdda9d7SSteve Wise status != CPL_ERR_ARP_MISS; 1163cfdda9d7SSteve Wise } 1164cfdda9d7SSteve Wise 1165cfdda9d7SSteve Wise static int act_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb) 1166cfdda9d7SSteve Wise { 1167cfdda9d7SSteve Wise struct c4iw_ep *ep; 1168cfdda9d7SSteve Wise struct cpl_act_open_rpl *rpl = cplhdr(skb); 1169cfdda9d7SSteve Wise unsigned int atid = GET_TID_TID(GET_AOPEN_ATID( 1170cfdda9d7SSteve Wise ntohl(rpl->atid_status))); 1171cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 1172cfdda9d7SSteve Wise int status = GET_AOPEN_STATUS(ntohl(rpl->atid_status)); 1173cfdda9d7SSteve Wise 1174cfdda9d7SSteve Wise ep = lookup_atid(t, atid); 1175cfdda9d7SSteve Wise 1176cfdda9d7SSteve Wise PDBG("%s ep %p atid %u status %u errno %d\n", __func__, ep, atid, 1177cfdda9d7SSteve Wise status, status2errno(status)); 1178cfdda9d7SSteve Wise 1179cfdda9d7SSteve Wise if (status == CPL_ERR_RTX_NEG_ADVICE) { 1180cfdda9d7SSteve Wise printk(KERN_WARNING MOD "Connection problems for atid %u\n", 1181cfdda9d7SSteve Wise atid); 1182cfdda9d7SSteve Wise return 0; 1183cfdda9d7SSteve Wise } 1184cfdda9d7SSteve Wise 1185cfdda9d7SSteve Wise connect_reply_upcall(ep, status2errno(status)); 1186cfdda9d7SSteve Wise state_set(&ep->com, DEAD); 1187cfdda9d7SSteve Wise 1188cfdda9d7SSteve Wise if (status && act_open_has_tid(status)) 1189cfdda9d7SSteve Wise cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, GET_TID(rpl)); 1190cfdda9d7SSteve Wise 1191cfdda9d7SSteve Wise cxgb4_free_atid(t, atid); 1192cfdda9d7SSteve Wise dst_release(ep->dst); 1193cfdda9d7SSteve Wise cxgb4_l2t_release(ep->l2t); 1194cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 1195cfdda9d7SSteve Wise 1196cfdda9d7SSteve Wise return 0; 1197cfdda9d7SSteve Wise } 1198cfdda9d7SSteve Wise 1199cfdda9d7SSteve Wise static int pass_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb) 1200cfdda9d7SSteve Wise { 1201cfdda9d7SSteve Wise struct cpl_pass_open_rpl *rpl = cplhdr(skb); 1202cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 1203cfdda9d7SSteve Wise unsigned int stid = GET_TID(rpl); 1204cfdda9d7SSteve Wise struct c4iw_listen_ep *ep = lookup_stid(t, stid); 1205cfdda9d7SSteve Wise 1206cfdda9d7SSteve Wise if (!ep) { 1207cfdda9d7SSteve Wise printk(KERN_ERR MOD "stid %d lookup failure!\n", stid); 1208cfdda9d7SSteve Wise return 0; 1209cfdda9d7SSteve Wise } 1210cfdda9d7SSteve Wise PDBG("%s ep %p status %d error %d\n", __func__, ep, 1211cfdda9d7SSteve Wise rpl->status, status2errno(rpl->status)); 1212aadc4df3SSteve Wise ep->com.wr_wait.ret = status2errno(rpl->status); 1213aadc4df3SSteve Wise ep->com.wr_wait.done = 1; 1214aadc4df3SSteve Wise wake_up(&ep->com.wr_wait.wait); 1215cfdda9d7SSteve Wise 1216cfdda9d7SSteve Wise return 0; 1217cfdda9d7SSteve Wise } 1218cfdda9d7SSteve Wise 1219cfdda9d7SSteve Wise static int listen_stop(struct c4iw_listen_ep *ep) 1220cfdda9d7SSteve Wise { 1221cfdda9d7SSteve Wise struct sk_buff *skb; 1222cfdda9d7SSteve Wise struct cpl_close_listsvr_req *req; 1223cfdda9d7SSteve Wise 1224cfdda9d7SSteve Wise PDBG("%s ep %p\n", __func__, ep); 1225cfdda9d7SSteve Wise skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); 1226cfdda9d7SSteve Wise if (!skb) { 1227cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - failed to alloc skb\n", __func__); 1228cfdda9d7SSteve Wise return -ENOMEM; 1229cfdda9d7SSteve Wise } 1230cfdda9d7SSteve Wise req = (struct cpl_close_listsvr_req *) skb_put(skb, sizeof(*req)); 1231cfdda9d7SSteve Wise INIT_TP_WR(req, 0); 1232cfdda9d7SSteve Wise OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_CLOSE_LISTSRV_REQ, 1233cfdda9d7SSteve Wise ep->stid)); 1234cfdda9d7SSteve Wise req->reply_ctrl = cpu_to_be16( 1235cfdda9d7SSteve Wise QUEUENO(ep->com.dev->rdev.lldi.rxq_ids[0])); 1236cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_SETUP, 0); 1237cfdda9d7SSteve Wise return c4iw_ofld_send(&ep->com.dev->rdev, skb); 1238cfdda9d7SSteve Wise } 1239cfdda9d7SSteve Wise 1240cfdda9d7SSteve Wise static int close_listsrv_rpl(struct c4iw_dev *dev, struct sk_buff *skb) 1241cfdda9d7SSteve Wise { 1242cfdda9d7SSteve Wise struct cpl_close_listsvr_rpl *rpl = cplhdr(skb); 1243cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 1244cfdda9d7SSteve Wise unsigned int stid = GET_TID(rpl); 1245cfdda9d7SSteve Wise struct c4iw_listen_ep *ep = lookup_stid(t, stid); 1246cfdda9d7SSteve Wise 1247cfdda9d7SSteve Wise PDBG("%s ep %p\n", __func__, ep); 1248aadc4df3SSteve Wise ep->com.wr_wait.ret = status2errno(rpl->status); 1249aadc4df3SSteve Wise ep->com.wr_wait.done = 1; 1250aadc4df3SSteve Wise wake_up(&ep->com.wr_wait.wait); 1251cfdda9d7SSteve Wise return 0; 1252cfdda9d7SSteve Wise } 1253cfdda9d7SSteve Wise 1254cfdda9d7SSteve Wise static void accept_cr(struct c4iw_ep *ep, __be32 peer_ip, struct sk_buff *skb, 1255cfdda9d7SSteve Wise struct cpl_pass_accept_req *req) 1256cfdda9d7SSteve Wise { 1257cfdda9d7SSteve Wise struct cpl_pass_accept_rpl *rpl; 1258cfdda9d7SSteve Wise unsigned int mtu_idx; 1259cfdda9d7SSteve Wise u64 opt0; 1260cfdda9d7SSteve Wise u32 opt2; 1261cfdda9d7SSteve Wise int wscale; 1262cfdda9d7SSteve Wise 1263cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 1264cfdda9d7SSteve Wise BUG_ON(skb_cloned(skb)); 1265cfdda9d7SSteve Wise skb_trim(skb, sizeof(*rpl)); 1266cfdda9d7SSteve Wise skb_get(skb); 1267cfdda9d7SSteve Wise cxgb4_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx); 1268cfdda9d7SSteve Wise wscale = compute_wscale(rcv_win); 1269cfdda9d7SSteve Wise opt0 = KEEP_ALIVE(1) | 1270ba6d3925SSteve Wise DELACK(1) | 1271cfdda9d7SSteve Wise WND_SCALE(wscale) | 1272cfdda9d7SSteve Wise MSS_IDX(mtu_idx) | 1273cfdda9d7SSteve Wise L2T_IDX(ep->l2t->idx) | 1274cfdda9d7SSteve Wise TX_CHAN(ep->tx_chan) | 1275cfdda9d7SSteve Wise SMAC_SEL(ep->smac_idx) | 1276cfdda9d7SSteve Wise DSCP(ep->tos) | 1277cfdda9d7SSteve Wise RCV_BUFSIZ(rcv_win>>10); 1278cfdda9d7SSteve Wise opt2 = RX_CHANNEL(0) | 1279cfdda9d7SSteve Wise RSS_QUEUE_VALID | RSS_QUEUE(ep->rss_qid); 1280cfdda9d7SSteve Wise 1281cfdda9d7SSteve Wise if (enable_tcp_timestamps && req->tcpopt.tstamp) 1282cfdda9d7SSteve Wise opt2 |= TSTAMPS_EN(1); 1283cfdda9d7SSteve Wise if (enable_tcp_sack && req->tcpopt.sack) 1284cfdda9d7SSteve Wise opt2 |= SACK_EN(1); 1285cfdda9d7SSteve Wise if (wscale && enable_tcp_window_scaling) 1286cfdda9d7SSteve Wise opt2 |= WND_SCALE_EN(1); 1287cfdda9d7SSteve Wise 1288cfdda9d7SSteve Wise rpl = cplhdr(skb); 1289cfdda9d7SSteve Wise INIT_TP_WR(rpl, ep->hwtid); 1290cfdda9d7SSteve Wise OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL, 1291cfdda9d7SSteve Wise ep->hwtid)); 1292cfdda9d7SSteve Wise rpl->opt0 = cpu_to_be64(opt0); 1293cfdda9d7SSteve Wise rpl->opt2 = cpu_to_be32(opt2); 1294d4f1a5c6SSteve Wise set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx); 1295cfdda9d7SSteve Wise c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); 1296cfdda9d7SSteve Wise 1297cfdda9d7SSteve Wise return; 1298cfdda9d7SSteve Wise } 1299cfdda9d7SSteve Wise 1300cfdda9d7SSteve Wise static void reject_cr(struct c4iw_dev *dev, u32 hwtid, __be32 peer_ip, 1301cfdda9d7SSteve Wise struct sk_buff *skb) 1302cfdda9d7SSteve Wise { 1303cfdda9d7SSteve Wise PDBG("%s c4iw_dev %p tid %u peer_ip %x\n", __func__, dev, hwtid, 1304cfdda9d7SSteve Wise peer_ip); 1305cfdda9d7SSteve Wise BUG_ON(skb_cloned(skb)); 1306cfdda9d7SSteve Wise skb_trim(skb, sizeof(struct cpl_tid_release)); 1307cfdda9d7SSteve Wise skb_get(skb); 1308cfdda9d7SSteve Wise release_tid(&dev->rdev, hwtid, skb); 1309cfdda9d7SSteve Wise return; 1310cfdda9d7SSteve Wise } 1311cfdda9d7SSteve Wise 1312cfdda9d7SSteve Wise static void get_4tuple(struct cpl_pass_accept_req *req, 1313cfdda9d7SSteve Wise __be32 *local_ip, __be32 *peer_ip, 1314cfdda9d7SSteve Wise __be16 *local_port, __be16 *peer_port) 1315cfdda9d7SSteve Wise { 1316cfdda9d7SSteve Wise int eth_len = G_ETH_HDR_LEN(be32_to_cpu(req->hdr_len)); 1317cfdda9d7SSteve Wise int ip_len = G_IP_HDR_LEN(be32_to_cpu(req->hdr_len)); 1318cfdda9d7SSteve Wise struct iphdr *ip = (struct iphdr *)((u8 *)(req + 1) + eth_len); 1319cfdda9d7SSteve Wise struct tcphdr *tcp = (struct tcphdr *) 1320cfdda9d7SSteve Wise ((u8 *)(req + 1) + eth_len + ip_len); 1321cfdda9d7SSteve Wise 1322cfdda9d7SSteve Wise PDBG("%s saddr 0x%x daddr 0x%x sport %u dport %u\n", __func__, 1323cfdda9d7SSteve Wise ntohl(ip->saddr), ntohl(ip->daddr), ntohs(tcp->source), 1324cfdda9d7SSteve Wise ntohs(tcp->dest)); 1325cfdda9d7SSteve Wise 1326cfdda9d7SSteve Wise *peer_ip = ip->saddr; 1327cfdda9d7SSteve Wise *local_ip = ip->daddr; 1328cfdda9d7SSteve Wise *peer_port = tcp->source; 1329cfdda9d7SSteve Wise *local_port = tcp->dest; 1330cfdda9d7SSteve Wise 1331cfdda9d7SSteve Wise return; 1332cfdda9d7SSteve Wise } 1333cfdda9d7SSteve Wise 1334cfdda9d7SSteve Wise static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb) 1335cfdda9d7SSteve Wise { 1336cfdda9d7SSteve Wise struct c4iw_ep *child_ep, *parent_ep; 1337cfdda9d7SSteve Wise struct cpl_pass_accept_req *req = cplhdr(skb); 1338cfdda9d7SSteve Wise unsigned int stid = GET_POPEN_TID(ntohl(req->tos_stid)); 1339cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 1340cfdda9d7SSteve Wise unsigned int hwtid = GET_TID(req); 1341cfdda9d7SSteve Wise struct dst_entry *dst; 1342cfdda9d7SSteve Wise struct l2t_entry *l2t; 1343cfdda9d7SSteve Wise struct rtable *rt; 1344cfdda9d7SSteve Wise __be32 local_ip, peer_ip; 1345cfdda9d7SSteve Wise __be16 local_port, peer_port; 1346cfdda9d7SSteve Wise struct net_device *pdev; 1347cfdda9d7SSteve Wise u32 tx_chan, smac_idx; 1348cfdda9d7SSteve Wise u16 rss_qid; 1349cfdda9d7SSteve Wise u32 mtu; 1350cfdda9d7SSteve Wise int step; 1351d4f1a5c6SSteve Wise int txq_idx, ctrlq_idx; 1352cfdda9d7SSteve Wise 1353cfdda9d7SSteve Wise parent_ep = lookup_stid(t, stid); 1354cfdda9d7SSteve Wise PDBG("%s parent ep %p tid %u\n", __func__, parent_ep, hwtid); 1355cfdda9d7SSteve Wise 1356cfdda9d7SSteve Wise get_4tuple(req, &local_ip, &peer_ip, &local_port, &peer_port); 1357cfdda9d7SSteve Wise 1358cfdda9d7SSteve Wise if (state_read(&parent_ep->com) != LISTEN) { 1359cfdda9d7SSteve Wise printk(KERN_ERR "%s - listening ep not in LISTEN\n", 1360cfdda9d7SSteve Wise __func__); 1361cfdda9d7SSteve Wise goto reject; 1362cfdda9d7SSteve Wise } 1363cfdda9d7SSteve Wise 1364cfdda9d7SSteve Wise /* Find output route */ 1365cfdda9d7SSteve Wise rt = find_route(dev, local_ip, peer_ip, local_port, peer_port, 1366cfdda9d7SSteve Wise GET_POPEN_TOS(ntohl(req->tos_stid))); 1367cfdda9d7SSteve Wise if (!rt) { 1368cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - failed to find dst entry!\n", 1369cfdda9d7SSteve Wise __func__); 1370cfdda9d7SSteve Wise goto reject; 1371cfdda9d7SSteve Wise } 1372d8d1f30bSChangli Gao dst = &rt->dst; 1373cfdda9d7SSteve Wise if (dst->neighbour->dev->flags & IFF_LOOPBACK) { 1374cfdda9d7SSteve Wise pdev = ip_dev_find(&init_net, peer_ip); 1375cfdda9d7SSteve Wise BUG_ON(!pdev); 1376cfdda9d7SSteve Wise l2t = cxgb4_l2t_get(dev->rdev.lldi.l2t, dst->neighbour, 1377cfdda9d7SSteve Wise pdev, 0); 1378cfdda9d7SSteve Wise mtu = pdev->mtu; 1379cfdda9d7SSteve Wise tx_chan = cxgb4_port_chan(pdev); 13802c5934bfSSteve Wise smac_idx = (cxgb4_port_viid(pdev) & 0x7F) << 1; 1381cfdda9d7SSteve Wise step = dev->rdev.lldi.ntxq / dev->rdev.lldi.nchan; 1382cfdda9d7SSteve Wise txq_idx = cxgb4_port_idx(pdev) * step; 1383d4f1a5c6SSteve Wise ctrlq_idx = cxgb4_port_idx(pdev); 1384cfdda9d7SSteve Wise step = dev->rdev.lldi.nrxq / dev->rdev.lldi.nchan; 1385cfdda9d7SSteve Wise rss_qid = dev->rdev.lldi.rxq_ids[cxgb4_port_idx(pdev) * step]; 1386cfdda9d7SSteve Wise dev_put(pdev); 1387cfdda9d7SSteve Wise } else { 1388cfdda9d7SSteve Wise l2t = cxgb4_l2t_get(dev->rdev.lldi.l2t, dst->neighbour, 1389cfdda9d7SSteve Wise dst->neighbour->dev, 0); 1390cfdda9d7SSteve Wise mtu = dst_mtu(dst); 1391cfdda9d7SSteve Wise tx_chan = cxgb4_port_chan(dst->neighbour->dev); 13922c5934bfSSteve Wise smac_idx = (cxgb4_port_viid(dst->neighbour->dev) & 0x7F) << 1; 1393cfdda9d7SSteve Wise step = dev->rdev.lldi.ntxq / dev->rdev.lldi.nchan; 1394cfdda9d7SSteve Wise txq_idx = cxgb4_port_idx(dst->neighbour->dev) * step; 1395d4f1a5c6SSteve Wise ctrlq_idx = cxgb4_port_idx(dst->neighbour->dev); 1396cfdda9d7SSteve Wise step = dev->rdev.lldi.nrxq / dev->rdev.lldi.nchan; 1397cfdda9d7SSteve Wise rss_qid = dev->rdev.lldi.rxq_ids[ 1398cfdda9d7SSteve Wise cxgb4_port_idx(dst->neighbour->dev) * step]; 1399cfdda9d7SSteve Wise } 1400cfdda9d7SSteve Wise if (!l2t) { 1401cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n", 1402cfdda9d7SSteve Wise __func__); 1403cfdda9d7SSteve Wise dst_release(dst); 1404cfdda9d7SSteve Wise goto reject; 1405cfdda9d7SSteve Wise } 1406cfdda9d7SSteve Wise 1407cfdda9d7SSteve Wise child_ep = alloc_ep(sizeof(*child_ep), GFP_KERNEL); 1408cfdda9d7SSteve Wise if (!child_ep) { 1409cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - failed to allocate ep entry!\n", 1410cfdda9d7SSteve Wise __func__); 1411cfdda9d7SSteve Wise cxgb4_l2t_release(l2t); 1412cfdda9d7SSteve Wise dst_release(dst); 1413cfdda9d7SSteve Wise goto reject; 1414cfdda9d7SSteve Wise } 1415cfdda9d7SSteve Wise state_set(&child_ep->com, CONNECTING); 1416cfdda9d7SSteve Wise child_ep->com.dev = dev; 1417cfdda9d7SSteve Wise child_ep->com.cm_id = NULL; 1418cfdda9d7SSteve Wise child_ep->com.local_addr.sin_family = PF_INET; 1419cfdda9d7SSteve Wise child_ep->com.local_addr.sin_port = local_port; 1420cfdda9d7SSteve Wise child_ep->com.local_addr.sin_addr.s_addr = local_ip; 1421cfdda9d7SSteve Wise child_ep->com.remote_addr.sin_family = PF_INET; 1422cfdda9d7SSteve Wise child_ep->com.remote_addr.sin_port = peer_port; 1423cfdda9d7SSteve Wise child_ep->com.remote_addr.sin_addr.s_addr = peer_ip; 1424cfdda9d7SSteve Wise c4iw_get_ep(&parent_ep->com); 1425cfdda9d7SSteve Wise child_ep->parent_ep = parent_ep; 1426cfdda9d7SSteve Wise child_ep->tos = GET_POPEN_TOS(ntohl(req->tos_stid)); 1427cfdda9d7SSteve Wise child_ep->l2t = l2t; 1428cfdda9d7SSteve Wise child_ep->dst = dst; 1429cfdda9d7SSteve Wise child_ep->hwtid = hwtid; 1430cfdda9d7SSteve Wise child_ep->tx_chan = tx_chan; 1431cfdda9d7SSteve Wise child_ep->smac_idx = smac_idx; 1432cfdda9d7SSteve Wise child_ep->rss_qid = rss_qid; 1433cfdda9d7SSteve Wise child_ep->mtu = mtu; 1434cfdda9d7SSteve Wise child_ep->txq_idx = txq_idx; 1435d4f1a5c6SSteve Wise child_ep->ctrlq_idx = ctrlq_idx; 1436cfdda9d7SSteve Wise 1437cfdda9d7SSteve Wise PDBG("%s tx_chan %u smac_idx %u rss_qid %u\n", __func__, 1438cfdda9d7SSteve Wise tx_chan, smac_idx, rss_qid); 1439cfdda9d7SSteve Wise 1440cfdda9d7SSteve Wise init_timer(&child_ep->timer); 1441cfdda9d7SSteve Wise cxgb4_insert_tid(t, child_ep, hwtid); 1442cfdda9d7SSteve Wise accept_cr(child_ep, peer_ip, skb, req); 1443cfdda9d7SSteve Wise goto out; 1444cfdda9d7SSteve Wise reject: 1445cfdda9d7SSteve Wise reject_cr(dev, hwtid, peer_ip, skb); 1446cfdda9d7SSteve Wise out: 1447cfdda9d7SSteve Wise return 0; 1448cfdda9d7SSteve Wise } 1449cfdda9d7SSteve Wise 1450cfdda9d7SSteve Wise static int pass_establish(struct c4iw_dev *dev, struct sk_buff *skb) 1451cfdda9d7SSteve Wise { 1452cfdda9d7SSteve Wise struct c4iw_ep *ep; 1453cfdda9d7SSteve Wise struct cpl_pass_establish *req = cplhdr(skb); 1454cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 1455cfdda9d7SSteve Wise unsigned int tid = GET_TID(req); 1456cfdda9d7SSteve Wise 1457cfdda9d7SSteve Wise ep = lookup_tid(t, tid); 1458cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 1459cfdda9d7SSteve Wise ep->snd_seq = be32_to_cpu(req->snd_isn); 1460cfdda9d7SSteve Wise ep->rcv_seq = be32_to_cpu(req->rcv_isn); 1461cfdda9d7SSteve Wise 1462cfdda9d7SSteve Wise set_emss(ep, ntohs(req->tcp_opt)); 1463cfdda9d7SSteve Wise 1464cfdda9d7SSteve Wise dst_confirm(ep->dst); 1465cfdda9d7SSteve Wise state_set(&ep->com, MPA_REQ_WAIT); 1466cfdda9d7SSteve Wise start_ep_timer(ep); 1467cfdda9d7SSteve Wise send_flowc(ep, skb); 1468cfdda9d7SSteve Wise 1469cfdda9d7SSteve Wise return 0; 1470cfdda9d7SSteve Wise } 1471cfdda9d7SSteve Wise 1472cfdda9d7SSteve Wise static int peer_close(struct c4iw_dev *dev, struct sk_buff *skb) 1473cfdda9d7SSteve Wise { 1474cfdda9d7SSteve Wise struct cpl_peer_close *hdr = cplhdr(skb); 1475cfdda9d7SSteve Wise struct c4iw_ep *ep; 1476cfdda9d7SSteve Wise struct c4iw_qp_attributes attrs; 1477cfdda9d7SSteve Wise int disconnect = 1; 1478cfdda9d7SSteve Wise int release = 0; 1479cfdda9d7SSteve Wise int closing = 0; 1480cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 1481cfdda9d7SSteve Wise unsigned int tid = GET_TID(hdr); 1482cfdda9d7SSteve Wise 1483cfdda9d7SSteve Wise ep = lookup_tid(t, tid); 1484cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 1485cfdda9d7SSteve Wise dst_confirm(ep->dst); 1486cfdda9d7SSteve Wise 14872f5b48c3SSteve Wise mutex_lock(&ep->com.mutex); 1488cfdda9d7SSteve Wise switch (ep->com.state) { 1489cfdda9d7SSteve Wise case MPA_REQ_WAIT: 1490cfdda9d7SSteve Wise __state_set(&ep->com, CLOSING); 1491cfdda9d7SSteve Wise break; 1492cfdda9d7SSteve Wise case MPA_REQ_SENT: 1493cfdda9d7SSteve Wise __state_set(&ep->com, CLOSING); 1494cfdda9d7SSteve Wise connect_reply_upcall(ep, -ECONNRESET); 1495cfdda9d7SSteve Wise break; 1496cfdda9d7SSteve Wise case MPA_REQ_RCVD: 1497cfdda9d7SSteve Wise 1498cfdda9d7SSteve Wise /* 1499cfdda9d7SSteve Wise * We're gonna mark this puppy DEAD, but keep 1500cfdda9d7SSteve Wise * the reference on it until the ULP accepts or 1501cfdda9d7SSteve Wise * rejects the CR. Also wake up anyone waiting 1502cfdda9d7SSteve Wise * in rdma connection migration (see c4iw_accept_cr()). 1503cfdda9d7SSteve Wise */ 1504cfdda9d7SSteve Wise __state_set(&ep->com, CLOSING); 1505aadc4df3SSteve Wise ep->com.wr_wait.done = 1; 1506aadc4df3SSteve Wise ep->com.wr_wait.ret = -ECONNRESET; 1507cfdda9d7SSteve Wise PDBG("waking up ep %p tid %u\n", ep, ep->hwtid); 1508aadc4df3SSteve Wise wake_up(&ep->com.wr_wait.wait); 1509cfdda9d7SSteve Wise break; 1510cfdda9d7SSteve Wise case MPA_REP_SENT: 1511cfdda9d7SSteve Wise __state_set(&ep->com, CLOSING); 1512aadc4df3SSteve Wise ep->com.wr_wait.done = 1; 1513aadc4df3SSteve Wise ep->com.wr_wait.ret = -ECONNRESET; 1514cfdda9d7SSteve Wise PDBG("waking up ep %p tid %u\n", ep, ep->hwtid); 1515aadc4df3SSteve Wise wake_up(&ep->com.wr_wait.wait); 1516cfdda9d7SSteve Wise break; 1517cfdda9d7SSteve Wise case FPDU_MODE: 1518ca5a2202SSteve Wise start_ep_timer(ep); 1519cfdda9d7SSteve Wise __state_set(&ep->com, CLOSING); 1520cfdda9d7SSteve Wise closing = 1; 1521cfdda9d7SSteve Wise peer_close_upcall(ep); 1522cfdda9d7SSteve Wise break; 1523cfdda9d7SSteve Wise case ABORTING: 1524cfdda9d7SSteve Wise disconnect = 0; 1525cfdda9d7SSteve Wise break; 1526cfdda9d7SSteve Wise case CLOSING: 1527cfdda9d7SSteve Wise __state_set(&ep->com, MORIBUND); 1528cfdda9d7SSteve Wise disconnect = 0; 1529cfdda9d7SSteve Wise break; 1530cfdda9d7SSteve Wise case MORIBUND: 1531ca5a2202SSteve Wise stop_ep_timer(ep); 1532cfdda9d7SSteve Wise if (ep->com.cm_id && ep->com.qp) { 1533cfdda9d7SSteve Wise attrs.next_state = C4IW_QP_STATE_IDLE; 1534cfdda9d7SSteve Wise c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 1535cfdda9d7SSteve Wise C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 1536cfdda9d7SSteve Wise } 1537cfdda9d7SSteve Wise close_complete_upcall(ep); 1538cfdda9d7SSteve Wise __state_set(&ep->com, DEAD); 1539cfdda9d7SSteve Wise release = 1; 1540cfdda9d7SSteve Wise disconnect = 0; 1541cfdda9d7SSteve Wise break; 1542cfdda9d7SSteve Wise case DEAD: 1543cfdda9d7SSteve Wise disconnect = 0; 1544cfdda9d7SSteve Wise break; 1545cfdda9d7SSteve Wise default: 1546cfdda9d7SSteve Wise BUG_ON(1); 1547cfdda9d7SSteve Wise } 15482f5b48c3SSteve Wise mutex_unlock(&ep->com.mutex); 1549cfdda9d7SSteve Wise if (closing) { 1550cfdda9d7SSteve Wise attrs.next_state = C4IW_QP_STATE_CLOSING; 1551cfdda9d7SSteve Wise c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 1552cfdda9d7SSteve Wise C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 1553cfdda9d7SSteve Wise } 1554cfdda9d7SSteve Wise if (disconnect) 1555cfdda9d7SSteve Wise c4iw_ep_disconnect(ep, 0, GFP_KERNEL); 1556cfdda9d7SSteve Wise if (release) 1557cfdda9d7SSteve Wise release_ep_resources(ep); 1558cfdda9d7SSteve Wise return 0; 1559cfdda9d7SSteve Wise } 1560cfdda9d7SSteve Wise 1561cfdda9d7SSteve Wise /* 1562cfdda9d7SSteve Wise * Returns whether an ABORT_REQ_RSS message is a negative advice. 1563cfdda9d7SSteve Wise */ 1564cfdda9d7SSteve Wise static int is_neg_adv_abort(unsigned int status) 1565cfdda9d7SSteve Wise { 1566cfdda9d7SSteve Wise return status == CPL_ERR_RTX_NEG_ADVICE || 1567cfdda9d7SSteve Wise status == CPL_ERR_PERSIST_NEG_ADVICE; 1568cfdda9d7SSteve Wise } 1569cfdda9d7SSteve Wise 1570cfdda9d7SSteve Wise static int peer_abort(struct c4iw_dev *dev, struct sk_buff *skb) 1571cfdda9d7SSteve Wise { 1572cfdda9d7SSteve Wise struct cpl_abort_req_rss *req = cplhdr(skb); 1573cfdda9d7SSteve Wise struct c4iw_ep *ep; 1574cfdda9d7SSteve Wise struct cpl_abort_rpl *rpl; 1575cfdda9d7SSteve Wise struct sk_buff *rpl_skb; 1576cfdda9d7SSteve Wise struct c4iw_qp_attributes attrs; 1577cfdda9d7SSteve Wise int ret; 1578cfdda9d7SSteve Wise int release = 0; 1579cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 1580cfdda9d7SSteve Wise unsigned int tid = GET_TID(req); 1581cfdda9d7SSteve Wise 1582cfdda9d7SSteve Wise ep = lookup_tid(t, tid); 1583cfdda9d7SSteve Wise if (is_neg_adv_abort(req->status)) { 1584cfdda9d7SSteve Wise PDBG("%s neg_adv_abort ep %p tid %u\n", __func__, ep, 1585cfdda9d7SSteve Wise ep->hwtid); 1586cfdda9d7SSteve Wise return 0; 1587cfdda9d7SSteve Wise } 1588cfdda9d7SSteve Wise PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid, 1589cfdda9d7SSteve Wise ep->com.state); 15902f5b48c3SSteve Wise 15912f5b48c3SSteve Wise /* 15922f5b48c3SSteve Wise * Wake up any threads in rdma_init() or rdma_fini(). 15932f5b48c3SSteve Wise */ 15942f5b48c3SSteve Wise ep->com.wr_wait.done = 1; 15952f5b48c3SSteve Wise ep->com.wr_wait.ret = -ECONNRESET; 15962f5b48c3SSteve Wise wake_up(&ep->com.wr_wait.wait); 15972f5b48c3SSteve Wise 15982f5b48c3SSteve Wise mutex_lock(&ep->com.mutex); 1599cfdda9d7SSteve Wise switch (ep->com.state) { 1600cfdda9d7SSteve Wise case CONNECTING: 1601cfdda9d7SSteve Wise break; 1602cfdda9d7SSteve Wise case MPA_REQ_WAIT: 1603ca5a2202SSteve Wise stop_ep_timer(ep); 1604cfdda9d7SSteve Wise break; 1605cfdda9d7SSteve Wise case MPA_REQ_SENT: 1606ca5a2202SSteve Wise stop_ep_timer(ep); 1607cfdda9d7SSteve Wise connect_reply_upcall(ep, -ECONNRESET); 1608cfdda9d7SSteve Wise break; 1609cfdda9d7SSteve Wise case MPA_REP_SENT: 1610cfdda9d7SSteve Wise break; 1611cfdda9d7SSteve Wise case MPA_REQ_RCVD: 1612cfdda9d7SSteve Wise break; 1613cfdda9d7SSteve Wise case MORIBUND: 1614cfdda9d7SSteve Wise case CLOSING: 1615ca5a2202SSteve Wise stop_ep_timer(ep); 1616cfdda9d7SSteve Wise /*FALLTHROUGH*/ 1617cfdda9d7SSteve Wise case FPDU_MODE: 1618cfdda9d7SSteve Wise if (ep->com.cm_id && ep->com.qp) { 1619cfdda9d7SSteve Wise attrs.next_state = C4IW_QP_STATE_ERROR; 1620cfdda9d7SSteve Wise ret = c4iw_modify_qp(ep->com.qp->rhp, 1621cfdda9d7SSteve Wise ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, 1622cfdda9d7SSteve Wise &attrs, 1); 1623cfdda9d7SSteve Wise if (ret) 1624cfdda9d7SSteve Wise printk(KERN_ERR MOD 1625cfdda9d7SSteve Wise "%s - qp <- error failed!\n", 1626cfdda9d7SSteve Wise __func__); 1627cfdda9d7SSteve Wise } 1628cfdda9d7SSteve Wise peer_abort_upcall(ep); 1629cfdda9d7SSteve Wise break; 1630cfdda9d7SSteve Wise case ABORTING: 1631cfdda9d7SSteve Wise break; 1632cfdda9d7SSteve Wise case DEAD: 1633cfdda9d7SSteve Wise PDBG("%s PEER_ABORT IN DEAD STATE!!!!\n", __func__); 16342f5b48c3SSteve Wise mutex_unlock(&ep->com.mutex); 1635cfdda9d7SSteve Wise return 0; 1636cfdda9d7SSteve Wise default: 1637cfdda9d7SSteve Wise BUG_ON(1); 1638cfdda9d7SSteve Wise break; 1639cfdda9d7SSteve Wise } 1640cfdda9d7SSteve Wise dst_confirm(ep->dst); 1641cfdda9d7SSteve Wise if (ep->com.state != ABORTING) { 1642cfdda9d7SSteve Wise __state_set(&ep->com, DEAD); 1643cfdda9d7SSteve Wise release = 1; 1644cfdda9d7SSteve Wise } 16452f5b48c3SSteve Wise mutex_unlock(&ep->com.mutex); 1646cfdda9d7SSteve Wise 1647cfdda9d7SSteve Wise rpl_skb = get_skb(skb, sizeof(*rpl), GFP_KERNEL); 1648cfdda9d7SSteve Wise if (!rpl_skb) { 1649cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - cannot allocate skb!\n", 1650cfdda9d7SSteve Wise __func__); 1651cfdda9d7SSteve Wise release = 1; 1652cfdda9d7SSteve Wise goto out; 1653cfdda9d7SSteve Wise } 1654cfdda9d7SSteve Wise set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); 1655cfdda9d7SSteve Wise rpl = (struct cpl_abort_rpl *) skb_put(rpl_skb, sizeof(*rpl)); 1656cfdda9d7SSteve Wise INIT_TP_WR(rpl, ep->hwtid); 1657cfdda9d7SSteve Wise OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_RPL, ep->hwtid)); 1658cfdda9d7SSteve Wise rpl->cmd = CPL_ABORT_NO_RST; 1659cfdda9d7SSteve Wise c4iw_ofld_send(&ep->com.dev->rdev, rpl_skb); 1660cfdda9d7SSteve Wise out: 1661cfdda9d7SSteve Wise if (release) 1662cfdda9d7SSteve Wise release_ep_resources(ep); 1663cfdda9d7SSteve Wise return 0; 1664cfdda9d7SSteve Wise } 1665cfdda9d7SSteve Wise 1666cfdda9d7SSteve Wise static int close_con_rpl(struct c4iw_dev *dev, struct sk_buff *skb) 1667cfdda9d7SSteve Wise { 1668cfdda9d7SSteve Wise struct c4iw_ep *ep; 1669cfdda9d7SSteve Wise struct c4iw_qp_attributes attrs; 1670cfdda9d7SSteve Wise struct cpl_close_con_rpl *rpl = cplhdr(skb); 1671cfdda9d7SSteve Wise int release = 0; 1672cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 1673cfdda9d7SSteve Wise unsigned int tid = GET_TID(rpl); 1674cfdda9d7SSteve Wise 1675cfdda9d7SSteve Wise ep = lookup_tid(t, tid); 1676cfdda9d7SSteve Wise 1677cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 1678cfdda9d7SSteve Wise BUG_ON(!ep); 1679cfdda9d7SSteve Wise 1680cfdda9d7SSteve Wise /* The cm_id may be null if we failed to connect */ 16812f5b48c3SSteve Wise mutex_lock(&ep->com.mutex); 1682cfdda9d7SSteve Wise switch (ep->com.state) { 1683cfdda9d7SSteve Wise case CLOSING: 1684cfdda9d7SSteve Wise __state_set(&ep->com, MORIBUND); 1685cfdda9d7SSteve Wise break; 1686cfdda9d7SSteve Wise case MORIBUND: 1687ca5a2202SSteve Wise stop_ep_timer(ep); 1688cfdda9d7SSteve Wise if ((ep->com.cm_id) && (ep->com.qp)) { 1689cfdda9d7SSteve Wise attrs.next_state = C4IW_QP_STATE_IDLE; 1690cfdda9d7SSteve Wise c4iw_modify_qp(ep->com.qp->rhp, 1691cfdda9d7SSteve Wise ep->com.qp, 1692cfdda9d7SSteve Wise C4IW_QP_ATTR_NEXT_STATE, 1693cfdda9d7SSteve Wise &attrs, 1); 1694cfdda9d7SSteve Wise } 1695cfdda9d7SSteve Wise close_complete_upcall(ep); 1696cfdda9d7SSteve Wise __state_set(&ep->com, DEAD); 1697cfdda9d7SSteve Wise release = 1; 1698cfdda9d7SSteve Wise break; 1699cfdda9d7SSteve Wise case ABORTING: 1700cfdda9d7SSteve Wise case DEAD: 1701cfdda9d7SSteve Wise break; 1702cfdda9d7SSteve Wise default: 1703cfdda9d7SSteve Wise BUG_ON(1); 1704cfdda9d7SSteve Wise break; 1705cfdda9d7SSteve Wise } 17062f5b48c3SSteve Wise mutex_unlock(&ep->com.mutex); 1707cfdda9d7SSteve Wise if (release) 1708cfdda9d7SSteve Wise release_ep_resources(ep); 1709cfdda9d7SSteve Wise return 0; 1710cfdda9d7SSteve Wise } 1711cfdda9d7SSteve Wise 1712cfdda9d7SSteve Wise static int terminate(struct c4iw_dev *dev, struct sk_buff *skb) 1713cfdda9d7SSteve Wise { 17140e42c1f4SSteve Wise struct cpl_rdma_terminate *rpl = cplhdr(skb); 1715cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 17160e42c1f4SSteve Wise unsigned int tid = GET_TID(rpl); 17170e42c1f4SSteve Wise struct c4iw_ep *ep; 17180e42c1f4SSteve Wise struct c4iw_qp_attributes attrs; 1719cfdda9d7SSteve Wise 1720cfdda9d7SSteve Wise ep = lookup_tid(t, tid); 17210e42c1f4SSteve Wise BUG_ON(!ep); 1722cfdda9d7SSteve Wise 17230e42c1f4SSteve Wise if (ep->com.qp) { 17240e42c1f4SSteve Wise printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", tid, 17250e42c1f4SSteve Wise ep->com.qp->wq.sq.qid); 17260e42c1f4SSteve Wise attrs.next_state = C4IW_QP_STATE_TERMINATE; 17270e42c1f4SSteve Wise c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, 17280e42c1f4SSteve Wise C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); 17290e42c1f4SSteve Wise } else 17300e42c1f4SSteve Wise printk(KERN_WARNING MOD "TERM received tid %u no qp\n", tid); 1731cfdda9d7SSteve Wise 1732cfdda9d7SSteve Wise return 0; 1733cfdda9d7SSteve Wise } 1734cfdda9d7SSteve Wise 1735cfdda9d7SSteve Wise /* 1736cfdda9d7SSteve Wise * Upcall from the adapter indicating data has been transmitted. 1737cfdda9d7SSteve Wise * For us its just the single MPA request or reply. We can now free 1738cfdda9d7SSteve Wise * the skb holding the mpa message. 1739cfdda9d7SSteve Wise */ 1740cfdda9d7SSteve Wise static int fw4_ack(struct c4iw_dev *dev, struct sk_buff *skb) 1741cfdda9d7SSteve Wise { 1742cfdda9d7SSteve Wise struct c4iw_ep *ep; 1743cfdda9d7SSteve Wise struct cpl_fw4_ack *hdr = cplhdr(skb); 1744cfdda9d7SSteve Wise u8 credits = hdr->credits; 1745cfdda9d7SSteve Wise unsigned int tid = GET_TID(hdr); 1746cfdda9d7SSteve Wise struct tid_info *t = dev->rdev.lldi.tids; 1747cfdda9d7SSteve Wise 1748cfdda9d7SSteve Wise 1749cfdda9d7SSteve Wise ep = lookup_tid(t, tid); 1750cfdda9d7SSteve Wise PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits); 1751cfdda9d7SSteve Wise if (credits == 0) { 1752aa1ad260SJoe Perches PDBG("%s 0 credit ack ep %p tid %u state %u\n", 1753cfdda9d7SSteve Wise __func__, ep, ep->hwtid, state_read(&ep->com)); 1754cfdda9d7SSteve Wise return 0; 1755cfdda9d7SSteve Wise } 1756cfdda9d7SSteve Wise 1757cfdda9d7SSteve Wise dst_confirm(ep->dst); 1758cfdda9d7SSteve Wise if (ep->mpa_skb) { 1759cfdda9d7SSteve Wise PDBG("%s last streaming msg ack ep %p tid %u state %u " 1760cfdda9d7SSteve Wise "initiator %u freeing skb\n", __func__, ep, ep->hwtid, 1761cfdda9d7SSteve Wise state_read(&ep->com), ep->mpa_attr.initiator ? 1 : 0); 1762cfdda9d7SSteve Wise kfree_skb(ep->mpa_skb); 1763cfdda9d7SSteve Wise ep->mpa_skb = NULL; 1764cfdda9d7SSteve Wise } 1765cfdda9d7SSteve Wise return 0; 1766cfdda9d7SSteve Wise } 1767cfdda9d7SSteve Wise 1768cfdda9d7SSteve Wise int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) 1769cfdda9d7SSteve Wise { 1770cfdda9d7SSteve Wise int err; 1771cfdda9d7SSteve Wise struct c4iw_ep *ep = to_ep(cm_id); 1772cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 1773cfdda9d7SSteve Wise 1774cfdda9d7SSteve Wise if (state_read(&ep->com) == DEAD) { 1775cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 1776cfdda9d7SSteve Wise return -ECONNRESET; 1777cfdda9d7SSteve Wise } 1778cfdda9d7SSteve Wise BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD); 1779cfdda9d7SSteve Wise if (mpa_rev == 0) 1780cfdda9d7SSteve Wise abort_connection(ep, NULL, GFP_KERNEL); 1781cfdda9d7SSteve Wise else { 1782cfdda9d7SSteve Wise err = send_mpa_reject(ep, pdata, pdata_len); 1783cfdda9d7SSteve Wise err = c4iw_ep_disconnect(ep, 0, GFP_KERNEL); 1784cfdda9d7SSteve Wise } 1785cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 1786cfdda9d7SSteve Wise return 0; 1787cfdda9d7SSteve Wise } 1788cfdda9d7SSteve Wise 1789cfdda9d7SSteve Wise int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 1790cfdda9d7SSteve Wise { 1791cfdda9d7SSteve Wise int err; 1792cfdda9d7SSteve Wise struct c4iw_qp_attributes attrs; 1793cfdda9d7SSteve Wise enum c4iw_qp_attr_mask mask; 1794cfdda9d7SSteve Wise struct c4iw_ep *ep = to_ep(cm_id); 1795cfdda9d7SSteve Wise struct c4iw_dev *h = to_c4iw_dev(cm_id->device); 1796cfdda9d7SSteve Wise struct c4iw_qp *qp = get_qhp(h, conn_param->qpn); 1797cfdda9d7SSteve Wise 1798cfdda9d7SSteve Wise PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); 1799cfdda9d7SSteve Wise if (state_read(&ep->com) == DEAD) { 1800cfdda9d7SSteve Wise err = -ECONNRESET; 1801cfdda9d7SSteve Wise goto err; 1802cfdda9d7SSteve Wise } 1803cfdda9d7SSteve Wise 1804cfdda9d7SSteve Wise BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD); 1805cfdda9d7SSteve Wise BUG_ON(!qp); 1806cfdda9d7SSteve Wise 1807be4c9badSRoland Dreier if ((conn_param->ord > c4iw_max_read_depth) || 1808be4c9badSRoland Dreier (conn_param->ird > c4iw_max_read_depth)) { 1809cfdda9d7SSteve Wise abort_connection(ep, NULL, GFP_KERNEL); 1810cfdda9d7SSteve Wise err = -EINVAL; 1811cfdda9d7SSteve Wise goto err; 1812cfdda9d7SSteve Wise } 1813cfdda9d7SSteve Wise 1814cfdda9d7SSteve Wise cm_id->add_ref(cm_id); 1815cfdda9d7SSteve Wise ep->com.cm_id = cm_id; 1816cfdda9d7SSteve Wise ep->com.qp = qp; 1817cfdda9d7SSteve Wise 1818cfdda9d7SSteve Wise ep->ird = conn_param->ird; 1819cfdda9d7SSteve Wise ep->ord = conn_param->ord; 1820cfdda9d7SSteve Wise 1821cfdda9d7SSteve Wise if (peer2peer && ep->ird == 0) 1822cfdda9d7SSteve Wise ep->ird = 1; 1823cfdda9d7SSteve Wise 1824cfdda9d7SSteve Wise PDBG("%s %d ird %d ord %d\n", __func__, __LINE__, ep->ird, ep->ord); 1825cfdda9d7SSteve Wise 1826cfdda9d7SSteve Wise /* bind QP to EP and move to RTS */ 1827cfdda9d7SSteve Wise attrs.mpa_attr = ep->mpa_attr; 1828cfdda9d7SSteve Wise attrs.max_ird = ep->ird; 1829cfdda9d7SSteve Wise attrs.max_ord = ep->ord; 1830cfdda9d7SSteve Wise attrs.llp_stream_handle = ep; 1831cfdda9d7SSteve Wise attrs.next_state = C4IW_QP_STATE_RTS; 1832cfdda9d7SSteve Wise 1833cfdda9d7SSteve Wise /* bind QP and TID with INIT_WR */ 1834cfdda9d7SSteve Wise mask = C4IW_QP_ATTR_NEXT_STATE | 1835cfdda9d7SSteve Wise C4IW_QP_ATTR_LLP_STREAM_HANDLE | 1836cfdda9d7SSteve Wise C4IW_QP_ATTR_MPA_ATTR | 1837cfdda9d7SSteve Wise C4IW_QP_ATTR_MAX_IRD | 1838cfdda9d7SSteve Wise C4IW_QP_ATTR_MAX_ORD; 1839cfdda9d7SSteve Wise 1840cfdda9d7SSteve Wise err = c4iw_modify_qp(ep->com.qp->rhp, 1841cfdda9d7SSteve Wise ep->com.qp, mask, &attrs, 1); 1842cfdda9d7SSteve Wise if (err) 1843cfdda9d7SSteve Wise goto err1; 1844cfdda9d7SSteve Wise err = send_mpa_reply(ep, conn_param->private_data, 1845cfdda9d7SSteve Wise conn_param->private_data_len); 1846cfdda9d7SSteve Wise if (err) 1847cfdda9d7SSteve Wise goto err1; 1848cfdda9d7SSteve Wise 1849cfdda9d7SSteve Wise state_set(&ep->com, FPDU_MODE); 1850cfdda9d7SSteve Wise established_upcall(ep); 1851cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 1852cfdda9d7SSteve Wise return 0; 1853cfdda9d7SSteve Wise err1: 1854cfdda9d7SSteve Wise ep->com.cm_id = NULL; 1855cfdda9d7SSteve Wise ep->com.qp = NULL; 1856cfdda9d7SSteve Wise cm_id->rem_ref(cm_id); 1857cfdda9d7SSteve Wise err: 1858cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 1859cfdda9d7SSteve Wise return err; 1860cfdda9d7SSteve Wise } 1861cfdda9d7SSteve Wise 1862cfdda9d7SSteve Wise int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) 1863cfdda9d7SSteve Wise { 1864cfdda9d7SSteve Wise int err = 0; 1865cfdda9d7SSteve Wise struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 1866cfdda9d7SSteve Wise struct c4iw_ep *ep; 1867cfdda9d7SSteve Wise struct rtable *rt; 1868cfdda9d7SSteve Wise struct net_device *pdev; 1869cfdda9d7SSteve Wise int step; 1870cfdda9d7SSteve Wise 1871be4c9badSRoland Dreier if ((conn_param->ord > c4iw_max_read_depth) || 1872be4c9badSRoland Dreier (conn_param->ird > c4iw_max_read_depth)) { 1873be4c9badSRoland Dreier err = -EINVAL; 1874be4c9badSRoland Dreier goto out; 1875be4c9badSRoland Dreier } 1876cfdda9d7SSteve Wise ep = alloc_ep(sizeof(*ep), GFP_KERNEL); 1877cfdda9d7SSteve Wise if (!ep) { 1878cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); 1879cfdda9d7SSteve Wise err = -ENOMEM; 1880cfdda9d7SSteve Wise goto out; 1881cfdda9d7SSteve Wise } 1882cfdda9d7SSteve Wise init_timer(&ep->timer); 1883cfdda9d7SSteve Wise ep->plen = conn_param->private_data_len; 1884cfdda9d7SSteve Wise if (ep->plen) 1885cfdda9d7SSteve Wise memcpy(ep->mpa_pkt + sizeof(struct mpa_message), 1886cfdda9d7SSteve Wise conn_param->private_data, ep->plen); 1887cfdda9d7SSteve Wise ep->ird = conn_param->ird; 1888cfdda9d7SSteve Wise ep->ord = conn_param->ord; 1889cfdda9d7SSteve Wise 1890cfdda9d7SSteve Wise if (peer2peer && ep->ord == 0) 1891cfdda9d7SSteve Wise ep->ord = 1; 1892cfdda9d7SSteve Wise 1893cfdda9d7SSteve Wise cm_id->add_ref(cm_id); 1894cfdda9d7SSteve Wise ep->com.dev = dev; 1895cfdda9d7SSteve Wise ep->com.cm_id = cm_id; 1896cfdda9d7SSteve Wise ep->com.qp = get_qhp(dev, conn_param->qpn); 1897cfdda9d7SSteve Wise BUG_ON(!ep->com.qp); 1898cfdda9d7SSteve Wise PDBG("%s qpn 0x%x qp %p cm_id %p\n", __func__, conn_param->qpn, 1899cfdda9d7SSteve Wise ep->com.qp, cm_id); 1900cfdda9d7SSteve Wise 1901cfdda9d7SSteve Wise /* 1902cfdda9d7SSteve Wise * Allocate an active TID to initiate a TCP connection. 1903cfdda9d7SSteve Wise */ 1904cfdda9d7SSteve Wise ep->atid = cxgb4_alloc_atid(dev->rdev.lldi.tids, ep); 1905cfdda9d7SSteve Wise if (ep->atid == -1) { 1906cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __func__); 1907cfdda9d7SSteve Wise err = -ENOMEM; 1908cfdda9d7SSteve Wise goto fail2; 1909cfdda9d7SSteve Wise } 1910cfdda9d7SSteve Wise 1911cfdda9d7SSteve Wise PDBG("%s saddr 0x%x sport 0x%x raddr 0x%x rport 0x%x\n", __func__, 1912cfdda9d7SSteve Wise ntohl(cm_id->local_addr.sin_addr.s_addr), 1913cfdda9d7SSteve Wise ntohs(cm_id->local_addr.sin_port), 1914cfdda9d7SSteve Wise ntohl(cm_id->remote_addr.sin_addr.s_addr), 1915cfdda9d7SSteve Wise ntohs(cm_id->remote_addr.sin_port)); 1916cfdda9d7SSteve Wise 1917cfdda9d7SSteve Wise /* find a route */ 1918cfdda9d7SSteve Wise rt = find_route(dev, 1919cfdda9d7SSteve Wise cm_id->local_addr.sin_addr.s_addr, 1920cfdda9d7SSteve Wise cm_id->remote_addr.sin_addr.s_addr, 1921cfdda9d7SSteve Wise cm_id->local_addr.sin_port, 1922cfdda9d7SSteve Wise cm_id->remote_addr.sin_port, 0); 1923cfdda9d7SSteve Wise if (!rt) { 1924cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - cannot find route.\n", __func__); 1925cfdda9d7SSteve Wise err = -EHOSTUNREACH; 1926cfdda9d7SSteve Wise goto fail3; 1927cfdda9d7SSteve Wise } 1928d8d1f30bSChangli Gao ep->dst = &rt->dst; 1929cfdda9d7SSteve Wise 1930cfdda9d7SSteve Wise /* get a l2t entry */ 1931cfdda9d7SSteve Wise if (ep->dst->neighbour->dev->flags & IFF_LOOPBACK) { 1932cfdda9d7SSteve Wise PDBG("%s LOOPBACK\n", __func__); 1933cfdda9d7SSteve Wise pdev = ip_dev_find(&init_net, 1934cfdda9d7SSteve Wise cm_id->remote_addr.sin_addr.s_addr); 1935cfdda9d7SSteve Wise ep->l2t = cxgb4_l2t_get(ep->com.dev->rdev.lldi.l2t, 1936cfdda9d7SSteve Wise ep->dst->neighbour, 1937cfdda9d7SSteve Wise pdev, 0); 1938cfdda9d7SSteve Wise ep->mtu = pdev->mtu; 1939cfdda9d7SSteve Wise ep->tx_chan = cxgb4_port_chan(pdev); 19402c5934bfSSteve Wise ep->smac_idx = (cxgb4_port_viid(pdev) & 0x7F) << 1; 1941cfdda9d7SSteve Wise step = ep->com.dev->rdev.lldi.ntxq / 1942cfdda9d7SSteve Wise ep->com.dev->rdev.lldi.nchan; 1943cfdda9d7SSteve Wise ep->txq_idx = cxgb4_port_idx(pdev) * step; 1944cfdda9d7SSteve Wise step = ep->com.dev->rdev.lldi.nrxq / 1945cfdda9d7SSteve Wise ep->com.dev->rdev.lldi.nchan; 1946d4f1a5c6SSteve Wise ep->ctrlq_idx = cxgb4_port_idx(pdev); 1947cfdda9d7SSteve Wise ep->rss_qid = ep->com.dev->rdev.lldi.rxq_ids[ 1948cfdda9d7SSteve Wise cxgb4_port_idx(pdev) * step]; 1949cfdda9d7SSteve Wise dev_put(pdev); 1950cfdda9d7SSteve Wise } else { 1951cfdda9d7SSteve Wise ep->l2t = cxgb4_l2t_get(ep->com.dev->rdev.lldi.l2t, 1952cfdda9d7SSteve Wise ep->dst->neighbour, 1953cfdda9d7SSteve Wise ep->dst->neighbour->dev, 0); 1954cfdda9d7SSteve Wise ep->mtu = dst_mtu(ep->dst); 1955cfdda9d7SSteve Wise ep->tx_chan = cxgb4_port_chan(ep->dst->neighbour->dev); 19562c5934bfSSteve Wise ep->smac_idx = (cxgb4_port_viid(ep->dst->neighbour->dev) & 19572c5934bfSSteve Wise 0x7F) << 1; 1958cfdda9d7SSteve Wise step = ep->com.dev->rdev.lldi.ntxq / 1959cfdda9d7SSteve Wise ep->com.dev->rdev.lldi.nchan; 1960cfdda9d7SSteve Wise ep->txq_idx = cxgb4_port_idx(ep->dst->neighbour->dev) * step; 1961d4f1a5c6SSteve Wise ep->ctrlq_idx = cxgb4_port_idx(ep->dst->neighbour->dev); 1962cfdda9d7SSteve Wise step = ep->com.dev->rdev.lldi.nrxq / 1963cfdda9d7SSteve Wise ep->com.dev->rdev.lldi.nchan; 1964cfdda9d7SSteve Wise ep->rss_qid = ep->com.dev->rdev.lldi.rxq_ids[ 1965cfdda9d7SSteve Wise cxgb4_port_idx(ep->dst->neighbour->dev) * step]; 1966cfdda9d7SSteve Wise } 1967cfdda9d7SSteve Wise if (!ep->l2t) { 1968cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__); 1969cfdda9d7SSteve Wise err = -ENOMEM; 1970cfdda9d7SSteve Wise goto fail4; 1971cfdda9d7SSteve Wise } 1972cfdda9d7SSteve Wise 1973cfdda9d7SSteve Wise PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n", 1974cfdda9d7SSteve Wise __func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid, 1975cfdda9d7SSteve Wise ep->l2t->idx); 1976cfdda9d7SSteve Wise 1977cfdda9d7SSteve Wise state_set(&ep->com, CONNECTING); 1978cfdda9d7SSteve Wise ep->tos = 0; 1979cfdda9d7SSteve Wise ep->com.local_addr = cm_id->local_addr; 1980cfdda9d7SSteve Wise ep->com.remote_addr = cm_id->remote_addr; 1981cfdda9d7SSteve Wise 1982cfdda9d7SSteve Wise /* send connect request to rnic */ 1983cfdda9d7SSteve Wise err = send_connect(ep); 1984cfdda9d7SSteve Wise if (!err) 1985cfdda9d7SSteve Wise goto out; 1986cfdda9d7SSteve Wise 1987cfdda9d7SSteve Wise cxgb4_l2t_release(ep->l2t); 1988cfdda9d7SSteve Wise fail4: 1989cfdda9d7SSteve Wise dst_release(ep->dst); 1990cfdda9d7SSteve Wise fail3: 1991cfdda9d7SSteve Wise cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid); 1992cfdda9d7SSteve Wise fail2: 1993cfdda9d7SSteve Wise cm_id->rem_ref(cm_id); 1994cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 1995cfdda9d7SSteve Wise out: 1996cfdda9d7SSteve Wise return err; 1997cfdda9d7SSteve Wise } 1998cfdda9d7SSteve Wise 1999cfdda9d7SSteve Wise int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog) 2000cfdda9d7SSteve Wise { 2001cfdda9d7SSteve Wise int err = 0; 2002cfdda9d7SSteve Wise struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); 2003cfdda9d7SSteve Wise struct c4iw_listen_ep *ep; 2004cfdda9d7SSteve Wise 2005cfdda9d7SSteve Wise 2006cfdda9d7SSteve Wise might_sleep(); 2007cfdda9d7SSteve Wise 2008cfdda9d7SSteve Wise ep = alloc_ep(sizeof(*ep), GFP_KERNEL); 2009cfdda9d7SSteve Wise if (!ep) { 2010cfdda9d7SSteve Wise printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); 2011cfdda9d7SSteve Wise err = -ENOMEM; 2012cfdda9d7SSteve Wise goto fail1; 2013cfdda9d7SSteve Wise } 2014cfdda9d7SSteve Wise PDBG("%s ep %p\n", __func__, ep); 2015cfdda9d7SSteve Wise cm_id->add_ref(cm_id); 2016cfdda9d7SSteve Wise ep->com.cm_id = cm_id; 2017cfdda9d7SSteve Wise ep->com.dev = dev; 2018cfdda9d7SSteve Wise ep->backlog = backlog; 2019cfdda9d7SSteve Wise ep->com.local_addr = cm_id->local_addr; 2020cfdda9d7SSteve Wise 2021cfdda9d7SSteve Wise /* 2022cfdda9d7SSteve Wise * Allocate a server TID. 2023cfdda9d7SSteve Wise */ 2024cfdda9d7SSteve Wise ep->stid = cxgb4_alloc_stid(dev->rdev.lldi.tids, PF_INET, ep); 2025cfdda9d7SSteve Wise if (ep->stid == -1) { 2026be4c9badSRoland Dreier printk(KERN_ERR MOD "%s - cannot alloc stid.\n", __func__); 2027cfdda9d7SSteve Wise err = -ENOMEM; 2028cfdda9d7SSteve Wise goto fail2; 2029cfdda9d7SSteve Wise } 2030cfdda9d7SSteve Wise 2031cfdda9d7SSteve Wise state_set(&ep->com, LISTEN); 2032aadc4df3SSteve Wise c4iw_init_wr_wait(&ep->com.wr_wait); 2033cfdda9d7SSteve Wise err = cxgb4_create_server(ep->com.dev->rdev.lldi.ports[0], ep->stid, 2034cfdda9d7SSteve Wise ep->com.local_addr.sin_addr.s_addr, 2035cfdda9d7SSteve Wise ep->com.local_addr.sin_port, 2036cfdda9d7SSteve Wise ep->com.dev->rdev.lldi.rxq_ids[0]); 2037cfdda9d7SSteve Wise if (err) 2038cfdda9d7SSteve Wise goto fail3; 2039cfdda9d7SSteve Wise 2040cfdda9d7SSteve Wise /* wait for pass_open_rpl */ 2041aadc4df3SSteve Wise err = c4iw_wait_for_reply(&ep->com.dev->rdev, &ep->com.wr_wait, 0, 0, 2042aadc4df3SSteve Wise __func__); 2043cfdda9d7SSteve Wise if (!err) { 2044cfdda9d7SSteve Wise cm_id->provider_data = ep; 2045cfdda9d7SSteve Wise goto out; 2046cfdda9d7SSteve Wise } 2047cfdda9d7SSteve Wise fail3: 2048cfdda9d7SSteve Wise cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid, PF_INET); 2049cfdda9d7SSteve Wise fail2: 2050cfdda9d7SSteve Wise cm_id->rem_ref(cm_id); 2051cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 2052cfdda9d7SSteve Wise fail1: 2053cfdda9d7SSteve Wise out: 2054cfdda9d7SSteve Wise return err; 2055cfdda9d7SSteve Wise } 2056cfdda9d7SSteve Wise 2057cfdda9d7SSteve Wise int c4iw_destroy_listen(struct iw_cm_id *cm_id) 2058cfdda9d7SSteve Wise { 2059cfdda9d7SSteve Wise int err; 2060cfdda9d7SSteve Wise struct c4iw_listen_ep *ep = to_listen_ep(cm_id); 2061cfdda9d7SSteve Wise 2062cfdda9d7SSteve Wise PDBG("%s ep %p\n", __func__, ep); 2063cfdda9d7SSteve Wise 2064cfdda9d7SSteve Wise might_sleep(); 2065cfdda9d7SSteve Wise state_set(&ep->com, DEAD); 2066aadc4df3SSteve Wise c4iw_init_wr_wait(&ep->com.wr_wait); 2067cfdda9d7SSteve Wise err = listen_stop(ep); 2068cfdda9d7SSteve Wise if (err) 2069cfdda9d7SSteve Wise goto done; 2070aadc4df3SSteve Wise err = c4iw_wait_for_reply(&ep->com.dev->rdev, &ep->com.wr_wait, 0, 0, 2071aadc4df3SSteve Wise __func__); 2072cfdda9d7SSteve Wise cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid, PF_INET); 2073cfdda9d7SSteve Wise done: 2074cfdda9d7SSteve Wise cm_id->rem_ref(cm_id); 2075cfdda9d7SSteve Wise c4iw_put_ep(&ep->com); 2076cfdda9d7SSteve Wise return err; 2077cfdda9d7SSteve Wise } 2078cfdda9d7SSteve Wise 2079cfdda9d7SSteve Wise int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) 2080cfdda9d7SSteve Wise { 2081cfdda9d7SSteve Wise int ret = 0; 2082cfdda9d7SSteve Wise int close = 0; 2083cfdda9d7SSteve Wise int fatal = 0; 2084cfdda9d7SSteve Wise struct c4iw_rdev *rdev; 2085cfdda9d7SSteve Wise 20862f5b48c3SSteve Wise mutex_lock(&ep->com.mutex); 2087cfdda9d7SSteve Wise 2088cfdda9d7SSteve Wise PDBG("%s ep %p state %s, abrupt %d\n", __func__, ep, 2089cfdda9d7SSteve Wise states[ep->com.state], abrupt); 2090cfdda9d7SSteve Wise 2091cfdda9d7SSteve Wise rdev = &ep->com.dev->rdev; 2092cfdda9d7SSteve Wise if (c4iw_fatal_error(rdev)) { 2093cfdda9d7SSteve Wise fatal = 1; 2094cfdda9d7SSteve Wise close_complete_upcall(ep); 2095cfdda9d7SSteve Wise ep->com.state = DEAD; 2096cfdda9d7SSteve Wise } 2097cfdda9d7SSteve Wise switch (ep->com.state) { 2098cfdda9d7SSteve Wise case MPA_REQ_WAIT: 2099cfdda9d7SSteve Wise case MPA_REQ_SENT: 2100cfdda9d7SSteve Wise case MPA_REQ_RCVD: 2101cfdda9d7SSteve Wise case MPA_REP_SENT: 2102cfdda9d7SSteve Wise case FPDU_MODE: 2103cfdda9d7SSteve Wise close = 1; 2104cfdda9d7SSteve Wise if (abrupt) 2105cfdda9d7SSteve Wise ep->com.state = ABORTING; 2106cfdda9d7SSteve Wise else { 2107cfdda9d7SSteve Wise ep->com.state = CLOSING; 2108ca5a2202SSteve Wise start_ep_timer(ep); 2109cfdda9d7SSteve Wise } 2110cfdda9d7SSteve Wise set_bit(CLOSE_SENT, &ep->com.flags); 2111cfdda9d7SSteve Wise break; 2112cfdda9d7SSteve Wise case CLOSING: 2113cfdda9d7SSteve Wise if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) { 2114cfdda9d7SSteve Wise close = 1; 2115cfdda9d7SSteve Wise if (abrupt) { 2116ca5a2202SSteve Wise stop_ep_timer(ep); 2117cfdda9d7SSteve Wise ep->com.state = ABORTING; 2118cfdda9d7SSteve Wise } else 2119cfdda9d7SSteve Wise ep->com.state = MORIBUND; 2120cfdda9d7SSteve Wise } 2121cfdda9d7SSteve Wise break; 2122cfdda9d7SSteve Wise case MORIBUND: 2123cfdda9d7SSteve Wise case ABORTING: 2124cfdda9d7SSteve Wise case DEAD: 2125cfdda9d7SSteve Wise PDBG("%s ignoring disconnect ep %p state %u\n", 2126cfdda9d7SSteve Wise __func__, ep, ep->com.state); 2127cfdda9d7SSteve Wise break; 2128cfdda9d7SSteve Wise default: 2129cfdda9d7SSteve Wise BUG(); 2130cfdda9d7SSteve Wise break; 2131cfdda9d7SSteve Wise } 2132cfdda9d7SSteve Wise 21332f5b48c3SSteve Wise mutex_unlock(&ep->com.mutex); 2134cfdda9d7SSteve Wise if (close) { 2135cfdda9d7SSteve Wise if (abrupt) 2136cfdda9d7SSteve Wise ret = abort_connection(ep, NULL, gfp); 2137cfdda9d7SSteve Wise else 2138cfdda9d7SSteve Wise ret = send_halfclose(ep, gfp); 2139cfdda9d7SSteve Wise if (ret) 2140cfdda9d7SSteve Wise fatal = 1; 2141cfdda9d7SSteve Wise } 2142cfdda9d7SSteve Wise if (fatal) 2143cfdda9d7SSteve Wise release_ep_resources(ep); 2144cfdda9d7SSteve Wise return ret; 2145cfdda9d7SSteve Wise } 2146cfdda9d7SSteve Wise 21472f5b48c3SSteve Wise static int async_event(struct c4iw_dev *dev, struct sk_buff *skb) 21482f5b48c3SSteve Wise { 21492f5b48c3SSteve Wise struct cpl_fw6_msg *rpl = cplhdr(skb); 21502f5b48c3SSteve Wise c4iw_ev_dispatch(dev, (struct t4_cqe *)&rpl->data[0]); 21512f5b48c3SSteve Wise return 0; 21522f5b48c3SSteve Wise } 21532f5b48c3SSteve Wise 2154cfdda9d7SSteve Wise /* 2155be4c9badSRoland Dreier * These are the real handlers that are called from a 2156be4c9badSRoland Dreier * work queue. 2157be4c9badSRoland Dreier */ 2158be4c9badSRoland Dreier static c4iw_handler_func work_handlers[NUM_CPL_CMDS] = { 2159be4c9badSRoland Dreier [CPL_ACT_ESTABLISH] = act_establish, 2160be4c9badSRoland Dreier [CPL_ACT_OPEN_RPL] = act_open_rpl, 2161be4c9badSRoland Dreier [CPL_RX_DATA] = rx_data, 2162be4c9badSRoland Dreier [CPL_ABORT_RPL_RSS] = abort_rpl, 2163be4c9badSRoland Dreier [CPL_ABORT_RPL] = abort_rpl, 2164be4c9badSRoland Dreier [CPL_PASS_OPEN_RPL] = pass_open_rpl, 2165be4c9badSRoland Dreier [CPL_CLOSE_LISTSRV_RPL] = close_listsrv_rpl, 2166be4c9badSRoland Dreier [CPL_PASS_ACCEPT_REQ] = pass_accept_req, 2167be4c9badSRoland Dreier [CPL_PASS_ESTABLISH] = pass_establish, 2168be4c9badSRoland Dreier [CPL_PEER_CLOSE] = peer_close, 2169be4c9badSRoland Dreier [CPL_ABORT_REQ_RSS] = peer_abort, 2170be4c9badSRoland Dreier [CPL_CLOSE_CON_RPL] = close_con_rpl, 2171be4c9badSRoland Dreier [CPL_RDMA_TERMINATE] = terminate, 21722f5b48c3SSteve Wise [CPL_FW4_ACK] = fw4_ack, 21732f5b48c3SSteve Wise [CPL_FW6_MSG] = async_event 2174be4c9badSRoland Dreier }; 2175be4c9badSRoland Dreier 2176be4c9badSRoland Dreier static void process_timeout(struct c4iw_ep *ep) 2177be4c9badSRoland Dreier { 2178be4c9badSRoland Dreier struct c4iw_qp_attributes attrs; 2179be4c9badSRoland Dreier int abort = 1; 2180be4c9badSRoland Dreier 21812f5b48c3SSteve Wise mutex_lock(&ep->com.mutex); 2182be4c9badSRoland Dreier PDBG("%s ep %p tid %u state %d\n", __func__, ep, ep->hwtid, 2183be4c9badSRoland Dreier ep->com.state); 2184be4c9badSRoland Dreier switch (ep->com.state) { 2185be4c9badSRoland Dreier case MPA_REQ_SENT: 2186be4c9badSRoland Dreier __state_set(&ep->com, ABORTING); 2187be4c9badSRoland Dreier connect_reply_upcall(ep, -ETIMEDOUT); 2188be4c9badSRoland Dreier break; 2189be4c9badSRoland Dreier case MPA_REQ_WAIT: 2190be4c9badSRoland Dreier __state_set(&ep->com, ABORTING); 2191be4c9badSRoland Dreier break; 2192be4c9badSRoland Dreier case CLOSING: 2193be4c9badSRoland Dreier case MORIBUND: 2194be4c9badSRoland Dreier if (ep->com.cm_id && ep->com.qp) { 2195be4c9badSRoland Dreier attrs.next_state = C4IW_QP_STATE_ERROR; 2196be4c9badSRoland Dreier c4iw_modify_qp(ep->com.qp->rhp, 2197be4c9badSRoland Dreier ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, 2198be4c9badSRoland Dreier &attrs, 1); 2199be4c9badSRoland Dreier } 2200be4c9badSRoland Dreier __state_set(&ep->com, ABORTING); 2201be4c9badSRoland Dreier break; 2202be4c9badSRoland Dreier default: 2203be4c9badSRoland Dreier printk(KERN_ERR "%s unexpected state ep %p tid %u state %u\n", 2204be4c9badSRoland Dreier __func__, ep, ep->hwtid, ep->com.state); 2205be4c9badSRoland Dreier WARN_ON(1); 2206be4c9badSRoland Dreier abort = 0; 2207be4c9badSRoland Dreier } 22082f5b48c3SSteve Wise mutex_unlock(&ep->com.mutex); 2209be4c9badSRoland Dreier if (abort) 2210be4c9badSRoland Dreier abort_connection(ep, NULL, GFP_KERNEL); 2211be4c9badSRoland Dreier c4iw_put_ep(&ep->com); 2212be4c9badSRoland Dreier } 2213be4c9badSRoland Dreier 2214be4c9badSRoland Dreier static void process_timedout_eps(void) 2215be4c9badSRoland Dreier { 2216be4c9badSRoland Dreier struct c4iw_ep *ep; 2217be4c9badSRoland Dreier 2218be4c9badSRoland Dreier spin_lock_irq(&timeout_lock); 2219be4c9badSRoland Dreier while (!list_empty(&timeout_list)) { 2220be4c9badSRoland Dreier struct list_head *tmp; 2221be4c9badSRoland Dreier 2222be4c9badSRoland Dreier tmp = timeout_list.next; 2223be4c9badSRoland Dreier list_del(tmp); 2224be4c9badSRoland Dreier spin_unlock_irq(&timeout_lock); 2225be4c9badSRoland Dreier ep = list_entry(tmp, struct c4iw_ep, entry); 2226be4c9badSRoland Dreier process_timeout(ep); 2227be4c9badSRoland Dreier spin_lock_irq(&timeout_lock); 2228be4c9badSRoland Dreier } 2229be4c9badSRoland Dreier spin_unlock_irq(&timeout_lock); 2230be4c9badSRoland Dreier } 2231be4c9badSRoland Dreier 2232be4c9badSRoland Dreier static void process_work(struct work_struct *work) 2233be4c9badSRoland Dreier { 2234be4c9badSRoland Dreier struct sk_buff *skb = NULL; 2235be4c9badSRoland Dreier struct c4iw_dev *dev; 2236c1d7356cSDan Carpenter struct cpl_act_establish *rpl; 2237be4c9badSRoland Dreier unsigned int opcode; 2238be4c9badSRoland Dreier int ret; 2239be4c9badSRoland Dreier 2240be4c9badSRoland Dreier while ((skb = skb_dequeue(&rxq))) { 2241be4c9badSRoland Dreier rpl = cplhdr(skb); 2242be4c9badSRoland Dreier dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *))); 2243be4c9badSRoland Dreier opcode = rpl->ot.opcode; 2244be4c9badSRoland Dreier 2245be4c9badSRoland Dreier BUG_ON(!work_handlers[opcode]); 2246be4c9badSRoland Dreier ret = work_handlers[opcode](dev, skb); 2247be4c9badSRoland Dreier if (!ret) 2248be4c9badSRoland Dreier kfree_skb(skb); 2249be4c9badSRoland Dreier } 2250be4c9badSRoland Dreier process_timedout_eps(); 2251be4c9badSRoland Dreier } 2252be4c9badSRoland Dreier 2253be4c9badSRoland Dreier static DECLARE_WORK(skb_work, process_work); 2254be4c9badSRoland Dreier 2255be4c9badSRoland Dreier static void ep_timeout(unsigned long arg) 2256be4c9badSRoland Dreier { 2257be4c9badSRoland Dreier struct c4iw_ep *ep = (struct c4iw_ep *)arg; 2258be4c9badSRoland Dreier 2259be4c9badSRoland Dreier spin_lock(&timeout_lock); 2260be4c9badSRoland Dreier list_add_tail(&ep->entry, &timeout_list); 2261be4c9badSRoland Dreier spin_unlock(&timeout_lock); 2262be4c9badSRoland Dreier queue_work(workq, &skb_work); 2263be4c9badSRoland Dreier } 2264be4c9badSRoland Dreier 2265be4c9badSRoland Dreier /* 2266cfdda9d7SSteve Wise * All the CM events are handled on a work queue to have a safe context. 2267cfdda9d7SSteve Wise */ 2268cfdda9d7SSteve Wise static int sched(struct c4iw_dev *dev, struct sk_buff *skb) 2269cfdda9d7SSteve Wise { 2270cfdda9d7SSteve Wise 2271cfdda9d7SSteve Wise /* 2272cfdda9d7SSteve Wise * Save dev in the skb->cb area. 2273cfdda9d7SSteve Wise */ 2274cfdda9d7SSteve Wise *((struct c4iw_dev **) (skb->cb + sizeof(void *))) = dev; 2275cfdda9d7SSteve Wise 2276cfdda9d7SSteve Wise /* 2277cfdda9d7SSteve Wise * Queue the skb and schedule the worker thread. 2278cfdda9d7SSteve Wise */ 2279cfdda9d7SSteve Wise skb_queue_tail(&rxq, skb); 2280cfdda9d7SSteve Wise queue_work(workq, &skb_work); 2281cfdda9d7SSteve Wise return 0; 2282cfdda9d7SSteve Wise } 2283cfdda9d7SSteve Wise 2284cfdda9d7SSteve Wise static int set_tcb_rpl(struct c4iw_dev *dev, struct sk_buff *skb) 2285cfdda9d7SSteve Wise { 2286cfdda9d7SSteve Wise struct cpl_set_tcb_rpl *rpl = cplhdr(skb); 2287cfdda9d7SSteve Wise 2288cfdda9d7SSteve Wise if (rpl->status != CPL_ERR_NONE) { 2289cfdda9d7SSteve Wise printk(KERN_ERR MOD "Unexpected SET_TCB_RPL status %u " 2290cfdda9d7SSteve Wise "for tid %u\n", rpl->status, GET_TID(rpl)); 2291cfdda9d7SSteve Wise } 22922f5b48c3SSteve Wise kfree_skb(skb); 2293cfdda9d7SSteve Wise return 0; 2294cfdda9d7SSteve Wise } 2295cfdda9d7SSteve Wise 2296be4c9badSRoland Dreier static int fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb) 2297be4c9badSRoland Dreier { 2298be4c9badSRoland Dreier struct cpl_fw6_msg *rpl = cplhdr(skb); 2299be4c9badSRoland Dreier struct c4iw_wr_wait *wr_waitp; 2300be4c9badSRoland Dreier int ret; 2301be4c9badSRoland Dreier 2302be4c9badSRoland Dreier PDBG("%s type %u\n", __func__, rpl->type); 2303be4c9badSRoland Dreier 2304be4c9badSRoland Dreier switch (rpl->type) { 2305be4c9badSRoland Dreier case 1: 2306be4c9badSRoland Dreier ret = (int)((be64_to_cpu(rpl->data[0]) >> 8) & 0xff); 2307c8e081a1SRoland Dreier wr_waitp = (struct c4iw_wr_wait *)(__force unsigned long) rpl->data[1]; 2308be4c9badSRoland Dreier PDBG("%s wr_waitp %p ret %u\n", __func__, wr_waitp, ret); 2309be4c9badSRoland Dreier if (wr_waitp) { 23102f5b48c3SSteve Wise if (ret) 23112f5b48c3SSteve Wise wr_waitp->ret = -ret; 23122f5b48c3SSteve Wise else 23132f5b48c3SSteve Wise wr_waitp->ret = 0; 2314be4c9badSRoland Dreier wr_waitp->done = 1; 2315be4c9badSRoland Dreier wake_up(&wr_waitp->wait); 2316be4c9badSRoland Dreier } 23172f5b48c3SSteve Wise kfree_skb(skb); 2318be4c9badSRoland Dreier break; 2319be4c9badSRoland Dreier case 2: 23202f5b48c3SSteve Wise sched(dev, skb); 2321be4c9badSRoland Dreier break; 2322be4c9badSRoland Dreier default: 2323be4c9badSRoland Dreier printk(KERN_ERR MOD "%s unexpected fw6 msg type %u\n", __func__, 2324be4c9badSRoland Dreier rpl->type); 23252f5b48c3SSteve Wise kfree_skb(skb); 2326be4c9badSRoland Dreier break; 2327be4c9badSRoland Dreier } 2328be4c9badSRoland Dreier return 0; 2329be4c9badSRoland Dreier } 2330be4c9badSRoland Dreier 2331be4c9badSRoland Dreier /* 2332be4c9badSRoland Dreier * Most upcalls from the T4 Core go to sched() to 2333be4c9badSRoland Dreier * schedule the processing on a work queue. 2334be4c9badSRoland Dreier */ 2335be4c9badSRoland Dreier c4iw_handler_func c4iw_handlers[NUM_CPL_CMDS] = { 2336be4c9badSRoland Dreier [CPL_ACT_ESTABLISH] = sched, 2337be4c9badSRoland Dreier [CPL_ACT_OPEN_RPL] = sched, 2338be4c9badSRoland Dreier [CPL_RX_DATA] = sched, 2339be4c9badSRoland Dreier [CPL_ABORT_RPL_RSS] = sched, 2340be4c9badSRoland Dreier [CPL_ABORT_RPL] = sched, 2341be4c9badSRoland Dreier [CPL_PASS_OPEN_RPL] = sched, 2342be4c9badSRoland Dreier [CPL_CLOSE_LISTSRV_RPL] = sched, 2343be4c9badSRoland Dreier [CPL_PASS_ACCEPT_REQ] = sched, 2344be4c9badSRoland Dreier [CPL_PASS_ESTABLISH] = sched, 2345be4c9badSRoland Dreier [CPL_PEER_CLOSE] = sched, 2346be4c9badSRoland Dreier [CPL_CLOSE_CON_RPL] = sched, 2347be4c9badSRoland Dreier [CPL_ABORT_REQ_RSS] = sched, 2348be4c9badSRoland Dreier [CPL_RDMA_TERMINATE] = sched, 2349be4c9badSRoland Dreier [CPL_FW4_ACK] = sched, 2350be4c9badSRoland Dreier [CPL_SET_TCB_RPL] = set_tcb_rpl, 2351be4c9badSRoland Dreier [CPL_FW6_MSG] = fw6_msg 2352be4c9badSRoland Dreier }; 2353be4c9badSRoland Dreier 2354cfdda9d7SSteve Wise int __init c4iw_cm_init(void) 2355cfdda9d7SSteve Wise { 2356be4c9badSRoland Dreier spin_lock_init(&timeout_lock); 2357cfdda9d7SSteve Wise skb_queue_head_init(&rxq); 2358cfdda9d7SSteve Wise 2359cfdda9d7SSteve Wise workq = create_singlethread_workqueue("iw_cxgb4"); 2360cfdda9d7SSteve Wise if (!workq) 2361cfdda9d7SSteve Wise return -ENOMEM; 2362cfdda9d7SSteve Wise 2363cfdda9d7SSteve Wise return 0; 2364cfdda9d7SSteve Wise } 2365cfdda9d7SSteve Wise 2366cfdda9d7SSteve Wise void __exit c4iw_cm_term(void) 2367cfdda9d7SSteve Wise { 2368be4c9badSRoland Dreier WARN_ON(!list_empty(&timeout_list)); 2369cfdda9d7SSteve Wise flush_workqueue(workq); 2370cfdda9d7SSteve Wise destroy_workqueue(workq); 2371cfdda9d7SSteve Wise } 2372