2 * Copyright (c) 2009-2014 Chelsio, Inc. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 #include <linux/module.h>
33 #include <linux/list.h>
34 #include <linux/workqueue.h>
35 #include <linux/skbuff.h>
36 #include <linux/timer.h>
37 #include <linux/notifier.h>
38 #include <linux/inetdevice.h>
40 #include <linux/tcp.h>
41 #include <linux/if_vlan.h>
43 #include <net/neighbour.h>
44 #include <net/netevent.h>
45 #include <net/route.h>
47 #include <net/ip6_route.h>
48 #include <net/addrconf.h>
50 #include <rdma/ib_addr.h>
55 static char *states[] = {
72 module_param(nocong, int, 0644);
73 MODULE_PARM_DESC(nocong, "Turn of congestion control (default=0)");
75 static int enable_ecn;
76 module_param(enable_ecn, int, 0644);
77 MODULE_PARM_DESC(enable_ecn, "Enable ECN (default=0/disabled)");
79 static int dack_mode = 1;
80 module_param(dack_mode, int, 0644);
81 MODULE_PARM_DESC(dack_mode, "Delayed ack mode (default=1)");
83 uint c4iw_max_read_depth = 32;
84 module_param(c4iw_max_read_depth, int, 0644);
85 MODULE_PARM_DESC(c4iw_max_read_depth,
86 "Per-connection max ORD/IRD (default=32)");
88 static int enable_tcp_timestamps;
89 module_param(enable_tcp_timestamps, int, 0644);
90 MODULE_PARM_DESC(enable_tcp_timestamps, "Enable tcp timestamps (default=0)");
92 static int enable_tcp_sack;
93 module_param(enable_tcp_sack, int, 0644);
94 MODULE_PARM_DESC(enable_tcp_sack, "Enable tcp SACK (default=0)");
96 static int enable_tcp_window_scaling = 1;
97 module_param(enable_tcp_window_scaling, int, 0644);
98 MODULE_PARM_DESC(enable_tcp_window_scaling,
99 "Enable tcp window scaling (default=1)");
102 module_param(c4iw_debug, int, 0644);
103 MODULE_PARM_DESC(c4iw_debug, "Enable debug logging (default=0)");
105 static int peer2peer = 1;
106 module_param(peer2peer, int, 0644);
107 MODULE_PARM_DESC(peer2peer, "Support peer2peer ULPs (default=1)");
109 static int p2p_type = FW_RI_INIT_P2PTYPE_READ_REQ;
110 module_param(p2p_type, int, 0644);
111 MODULE_PARM_DESC(p2p_type, "RDMAP opcode to use for the RTR message: "
112 "1=RDMA_READ 0=RDMA_WRITE (default 1)");
114 static int ep_timeout_secs = 60;
115 module_param(ep_timeout_secs, int, 0644);
116 MODULE_PARM_DESC(ep_timeout_secs, "CM Endpoint operation timeout "
117 "in seconds (default=60)");
119 static int mpa_rev = 2;
120 module_param(mpa_rev, int, 0644);
121 MODULE_PARM_DESC(mpa_rev, "MPA Revision, 0 supports amso1100, "
122 "1 is RFC0544 spec compliant, 2 is IETF MPA Peer Connect Draft"
123 " compliant (default=2)");
125 static int markers_enabled;
126 module_param(markers_enabled, int, 0644);
127 MODULE_PARM_DESC(markers_enabled, "Enable MPA MARKERS (default(0)=disabled)");
129 static int crc_enabled = 1;
130 module_param(crc_enabled, int, 0644);
131 MODULE_PARM_DESC(crc_enabled, "Enable MPA CRC (default(1)=enabled)");
133 static int rcv_win = 256 * 1024;
134 module_param(rcv_win, int, 0644);
135 MODULE_PARM_DESC(rcv_win, "TCP receive window in bytes (default=256KB)");
137 static int snd_win = 128 * 1024;
138 module_param(snd_win, int, 0644);
139 MODULE_PARM_DESC(snd_win, "TCP send window in bytes (default=128KB)");
141 static struct workqueue_struct *workq;
143 static struct sk_buff_head rxq;
145 static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp);
146 static void ep_timeout(unsigned long arg);
147 static void connect_reply_upcall(struct c4iw_ep *ep, int status);
149 static LIST_HEAD(timeout_list);
150 static spinlock_t timeout_lock;
152 static void deref_qp(struct c4iw_ep *ep)
154 c4iw_qp_rem_ref(&ep->com.qp->ibqp);
155 clear_bit(QP_REFERENCED, &ep->com.flags);
158 static void ref_qp(struct c4iw_ep *ep)
160 set_bit(QP_REFERENCED, &ep->com.flags);
161 c4iw_qp_add_ref(&ep->com.qp->ibqp);
164 static void start_ep_timer(struct c4iw_ep *ep)
166 PDBG("%s ep %p\n", __func__, ep);
167 if (timer_pending(&ep->timer)) {
168 pr_err("%s timer already started! ep %p\n",
172 clear_bit(TIMEOUT, &ep->com.flags);
173 c4iw_get_ep(&ep->com);
174 ep->timer.expires = jiffies + ep_timeout_secs * HZ;
175 ep->timer.data = (unsigned long)ep;
176 ep->timer.function = ep_timeout;
177 add_timer(&ep->timer);
180 static int stop_ep_timer(struct c4iw_ep *ep)
182 PDBG("%s ep %p stopping\n", __func__, ep);
183 del_timer_sync(&ep->timer);
184 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) {
185 c4iw_put_ep(&ep->com);
191 static int c4iw_l2t_send(struct c4iw_rdev *rdev, struct sk_buff *skb,
192 struct l2t_entry *l2e)
196 if (c4iw_fatal_error(rdev)) {
198 PDBG("%s - device in error state - dropping\n", __func__);
201 error = cxgb4_l2t_send(rdev->lldi.ports[0], skb, l2e);
204 return error < 0 ? error : 0;
207 int c4iw_ofld_send(struct c4iw_rdev *rdev, struct sk_buff *skb)
211 if (c4iw_fatal_error(rdev)) {
213 PDBG("%s - device in error state - dropping\n", __func__);
216 error = cxgb4_ofld_send(rdev->lldi.ports[0], skb);
219 return error < 0 ? error : 0;
222 static void release_tid(struct c4iw_rdev *rdev, u32 hwtid, struct sk_buff *skb)
224 struct cpl_tid_release *req;
226 skb = get_skb(skb, sizeof *req, GFP_KERNEL);
229 req = (struct cpl_tid_release *) skb_put(skb, sizeof(*req));
230 INIT_TP_WR(req, hwtid);
231 OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_TID_RELEASE, hwtid));
232 set_wr_txq(skb, CPL_PRIORITY_SETUP, 0);
233 c4iw_ofld_send(rdev, skb);
237 static void set_emss(struct c4iw_ep *ep, u16 opt)
239 ep->emss = ep->com.dev->rdev.lldi.mtus[TCPOPT_MSS_G(opt)] -
240 ((AF_INET == ep->com.remote_addr.ss_family) ?
241 sizeof(struct iphdr) : sizeof(struct ipv6hdr)) -
242 sizeof(struct tcphdr);
244 if (TCPOPT_TSTAMP_G(opt))
245 ep->emss -= round_up(TCPOLEN_TIMESTAMP, 4);
249 PDBG("Warning: misaligned mtu idx %u mss %u emss=%u\n",
250 TCPOPT_MSS_G(opt), ep->mss, ep->emss);
251 PDBG("%s mss_idx %u mss %u emss=%u\n", __func__, TCPOPT_MSS_G(opt),
255 static enum c4iw_ep_state state_read(struct c4iw_ep_common *epc)
257 enum c4iw_ep_state state;
259 mutex_lock(&epc->mutex);
261 mutex_unlock(&epc->mutex);
265 static void __state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new)
270 static void state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new)
272 mutex_lock(&epc->mutex);
273 PDBG("%s - %s -> %s\n", __func__, states[epc->state], states[new]);
274 __state_set(epc, new);
275 mutex_unlock(&epc->mutex);
279 static void *alloc_ep(int size, gfp_t gfp)
281 struct c4iw_ep_common *epc;
283 epc = kzalloc(size, gfp);
285 kref_init(&epc->kref);
286 mutex_init(&epc->mutex);
287 c4iw_init_wr_wait(&epc->wr_wait);
289 PDBG("%s alloc ep %p\n", __func__, epc);
293 void _c4iw_free_ep(struct kref *kref)
297 ep = container_of(kref, struct c4iw_ep, com.kref);
298 PDBG("%s ep %p state %s\n", __func__, ep, states[state_read(&ep->com)]);
299 if (test_bit(QP_REFERENCED, &ep->com.flags))
301 if (test_bit(RELEASE_RESOURCES, &ep->com.flags)) {
302 if (ep->com.remote_addr.ss_family == AF_INET6) {
303 struct sockaddr_in6 *sin6 =
304 (struct sockaddr_in6 *)
308 ep->com.dev->rdev.lldi.ports[0],
309 (const u32 *)&sin6->sin6_addr.s6_addr,
312 remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid);
313 cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid);
314 dst_release(ep->dst);
315 cxgb4_l2t_release(ep->l2t);
320 static void release_ep_resources(struct c4iw_ep *ep)
322 set_bit(RELEASE_RESOURCES, &ep->com.flags);
323 c4iw_put_ep(&ep->com);
326 static int status2errno(int status)
331 case CPL_ERR_CONN_RESET:
333 case CPL_ERR_ARP_MISS:
334 return -EHOSTUNREACH;
335 case CPL_ERR_CONN_TIMEDOUT:
337 case CPL_ERR_TCAM_FULL:
339 case CPL_ERR_CONN_EXIST:
347 * Try and reuse skbs already allocated...
349 static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp)
351 if (skb && !skb_is_nonlinear(skb) && !skb_cloned(skb)) {
354 skb_reset_transport_header(skb);
356 skb = alloc_skb(len, gfp);
358 t4_set_arp_err_handler(skb, NULL, NULL);
362 static struct net_device *get_real_dev(struct net_device *egress_dev)
364 return rdma_vlan_dev_real_dev(egress_dev) ? : egress_dev;
367 static int our_interface(struct c4iw_dev *dev, struct net_device *egress_dev)
371 egress_dev = get_real_dev(egress_dev);
372 for (i = 0; i < dev->rdev.lldi.nports; i++)
373 if (dev->rdev.lldi.ports[i] == egress_dev)
378 static struct dst_entry *find_route6(struct c4iw_dev *dev, __u8 *local_ip,
379 __u8 *peer_ip, __be16 local_port,
380 __be16 peer_port, u8 tos,
383 struct dst_entry *dst = NULL;
385 if (IS_ENABLED(CONFIG_IPV6)) {
388 memset(&fl6, 0, sizeof(fl6));
389 memcpy(&fl6.daddr, peer_ip, 16);
390 memcpy(&fl6.saddr, local_ip, 16);
391 if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
392 fl6.flowi6_oif = sin6_scope_id;
393 dst = ip6_route_output(&init_net, NULL, &fl6);
396 if (!our_interface(dev, ip6_dst_idev(dst)->dev) &&
397 !(ip6_dst_idev(dst)->dev->flags & IFF_LOOPBACK)) {
407 static struct dst_entry *find_route(struct c4iw_dev *dev, __be32 local_ip,
408 __be32 peer_ip, __be16 local_port,
409 __be16 peer_port, u8 tos)
415 rt = ip_route_output_ports(&init_net, &fl4, NULL, peer_ip, local_ip,
416 peer_port, local_port, IPPROTO_TCP,
420 n = dst_neigh_lookup(&rt->dst, &peer_ip);
423 if (!our_interface(dev, n->dev) &&
424 !(n->dev->flags & IFF_LOOPBACK)) {
426 dst_release(&rt->dst);
433 static void arp_failure_discard(void *handle, struct sk_buff *skb)
435 PDBG("%s c4iw_dev %p\n", __func__, handle);
440 * Handle an ARP failure for an active open.
442 static void act_open_req_arp_failure(void *handle, struct sk_buff *skb)
444 struct c4iw_ep *ep = handle;
446 printk(KERN_ERR MOD "ARP failure during connect\n");
448 connect_reply_upcall(ep, -EHOSTUNREACH);
449 state_set(&ep->com, DEAD);
450 if (ep->com.remote_addr.ss_family == AF_INET6) {
451 struct sockaddr_in6 *sin6 =
452 (struct sockaddr_in6 *)&ep->com.local_addr;
453 cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
454 (const u32 *)&sin6->sin6_addr.s6_addr, 1);
456 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid);
457 cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid);
458 dst_release(ep->dst);
459 cxgb4_l2t_release(ep->l2t);
460 c4iw_put_ep(&ep->com);
464 * Handle an ARP failure for a CPL_ABORT_REQ. Change it into a no RST variant
467 static void abort_arp_failure(void *handle, struct sk_buff *skb)
469 struct c4iw_rdev *rdev = handle;
470 struct cpl_abort_req *req = cplhdr(skb);
472 PDBG("%s rdev %p\n", __func__, rdev);
473 req->cmd = CPL_ABORT_NO_RST;
474 c4iw_ofld_send(rdev, skb);
477 static void send_flowc(struct c4iw_ep *ep, struct sk_buff *skb)
479 unsigned int flowclen = 80;
480 struct fw_flowc_wr *flowc;
483 skb = get_skb(skb, flowclen, GFP_KERNEL);
484 flowc = (struct fw_flowc_wr *)__skb_put(skb, flowclen);
486 flowc->op_to_nparams = cpu_to_be32(FW_WR_OP_V(FW_FLOWC_WR) |
487 FW_FLOWC_WR_NPARAMS_V(8));
488 flowc->flowid_len16 = cpu_to_be32(FW_WR_LEN16_V(DIV_ROUND_UP(flowclen,
489 16)) | FW_WR_FLOWID_V(ep->hwtid));
491 flowc->mnemval[0].mnemonic = FW_FLOWC_MNEM_PFNVFN;
492 flowc->mnemval[0].val = cpu_to_be32(FW_PFVF_CMD_PFN_V
493 (ep->com.dev->rdev.lldi.pf));
494 flowc->mnemval[1].mnemonic = FW_FLOWC_MNEM_CH;
495 flowc->mnemval[1].val = cpu_to_be32(ep->tx_chan);
496 flowc->mnemval[2].mnemonic = FW_FLOWC_MNEM_PORT;
497 flowc->mnemval[2].val = cpu_to_be32(ep->tx_chan);
498 flowc->mnemval[3].mnemonic = FW_FLOWC_MNEM_IQID;
499 flowc->mnemval[3].val = cpu_to_be32(ep->rss_qid);
500 flowc->mnemval[4].mnemonic = FW_FLOWC_MNEM_SNDNXT;
501 flowc->mnemval[4].val = cpu_to_be32(ep->snd_seq);
502 flowc->mnemval[5].mnemonic = FW_FLOWC_MNEM_RCVNXT;
503 flowc->mnemval[5].val = cpu_to_be32(ep->rcv_seq);
504 flowc->mnemval[6].mnemonic = FW_FLOWC_MNEM_SNDBUF;
505 flowc->mnemval[6].val = cpu_to_be32(ep->snd_win);
506 flowc->mnemval[7].mnemonic = FW_FLOWC_MNEM_MSS;
507 flowc->mnemval[7].val = cpu_to_be32(ep->emss);
508 /* Pad WR to 16 byte boundary */
509 flowc->mnemval[8].mnemonic = 0;
510 flowc->mnemval[8].val = 0;
511 for (i = 0; i < 9; i++) {
512 flowc->mnemval[i].r4[0] = 0;
513 flowc->mnemval[i].r4[1] = 0;
514 flowc->mnemval[i].r4[2] = 0;
517 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
518 c4iw_ofld_send(&ep->com.dev->rdev, skb);
521 static int send_halfclose(struct c4iw_ep *ep, gfp_t gfp)
523 struct cpl_close_con_req *req;
525 int wrlen = roundup(sizeof *req, 16);
527 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
528 skb = get_skb(NULL, wrlen, gfp);
530 printk(KERN_ERR MOD "%s - failed to alloc skb\n", __func__);
533 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
534 t4_set_arp_err_handler(skb, NULL, arp_failure_discard);
535 req = (struct cpl_close_con_req *) skb_put(skb, wrlen);
536 memset(req, 0, wrlen);
537 INIT_TP_WR(req, ep->hwtid);
538 OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_CLOSE_CON_REQ,
540 return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
543 static int send_abort(struct c4iw_ep *ep, struct sk_buff *skb, gfp_t gfp)
545 struct cpl_abort_req *req;
546 int wrlen = roundup(sizeof *req, 16);
548 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
549 skb = get_skb(skb, wrlen, gfp);
551 printk(KERN_ERR MOD "%s - failed to alloc skb.\n",
555 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
556 t4_set_arp_err_handler(skb, &ep->com.dev->rdev, abort_arp_failure);
557 req = (struct cpl_abort_req *) skb_put(skb, wrlen);
558 memset(req, 0, wrlen);
559 INIT_TP_WR(req, ep->hwtid);
560 OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_REQ, ep->hwtid));
561 req->cmd = CPL_ABORT_SEND_RST;
562 return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
565 static void best_mtu(const unsigned short *mtus, unsigned short mtu,
566 unsigned int *idx, int use_ts, int ipv6)
568 unsigned short hdr_size = (ipv6 ?
569 sizeof(struct ipv6hdr) :
570 sizeof(struct iphdr)) +
571 sizeof(struct tcphdr) +
573 round_up(TCPOLEN_TIMESTAMP, 4) : 0);
574 unsigned short data_size = mtu - hdr_size;
576 cxgb4_best_aligned_mtu(mtus, hdr_size, data_size, 8, idx);
579 static int send_connect(struct c4iw_ep *ep)
581 struct cpl_act_open_req *req = NULL;
582 struct cpl_t5_act_open_req *t5req = NULL;
583 struct cpl_t6_act_open_req *t6req = NULL;
584 struct cpl_act_open_req6 *req6 = NULL;
585 struct cpl_t5_act_open_req6 *t5req6 = NULL;
586 struct cpl_t6_act_open_req6 *t6req6 = NULL;
590 unsigned int mtu_idx;
592 int win, sizev4, sizev6, wrlen;
593 struct sockaddr_in *la = (struct sockaddr_in *)
595 struct sockaddr_in *ra = (struct sockaddr_in *)
596 &ep->com.remote_addr;
597 struct sockaddr_in6 *la6 = (struct sockaddr_in6 *)
599 struct sockaddr_in6 *ra6 = (struct sockaddr_in6 *)
600 &ep->com.remote_addr;
602 enum chip_type adapter_type = ep->com.dev->rdev.lldi.adapter_type;
603 u32 isn = (prandom_u32() & ~7UL) - 1;
605 switch (CHELSIO_CHIP_VERSION(adapter_type)) {
607 sizev4 = sizeof(struct cpl_act_open_req);
608 sizev6 = sizeof(struct cpl_act_open_req6);
611 sizev4 = sizeof(struct cpl_t5_act_open_req);
612 sizev6 = sizeof(struct cpl_t5_act_open_req6);
615 sizev4 = sizeof(struct cpl_t6_act_open_req);
616 sizev6 = sizeof(struct cpl_t6_act_open_req6);
619 pr_err("T%d Chip is not supported\n",
620 CHELSIO_CHIP_VERSION(adapter_type));
624 wrlen = (ep->com.remote_addr.ss_family == AF_INET) ?
625 roundup(sizev4, 16) :
628 PDBG("%s ep %p atid %u\n", __func__, ep, ep->atid);
630 skb = get_skb(NULL, wrlen, GFP_KERNEL);
632 printk(KERN_ERR MOD "%s - failed to alloc skb.\n",
636 set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx);
638 best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx,
639 enable_tcp_timestamps,
640 (AF_INET == ep->com.remote_addr.ss_family) ? 0 : 1);
641 wscale = compute_wscale(rcv_win);
644 * Specify the largest window that will fit in opt0. The
645 * remainder will be specified in the rx_data_ack.
647 win = ep->rcv_win >> 10;
648 if (win > RCV_BUFSIZ_M)
651 opt0 = (nocong ? NO_CONG_F : 0) |
654 WND_SCALE_V(wscale) |
656 L2T_IDX_V(ep->l2t->idx) |
657 TX_CHAN_V(ep->tx_chan) |
658 SMAC_SEL_V(ep->smac_idx) |
660 ULP_MODE_V(ULP_MODE_TCPDDP) |
662 opt2 = RX_CHANNEL_V(0) |
663 CCTRL_ECN_V(enable_ecn) |
664 RSS_QUEUE_VALID_F | RSS_QUEUE_V(ep->rss_qid);
665 if (enable_tcp_timestamps)
666 opt2 |= TSTAMPS_EN_F;
669 if (wscale && enable_tcp_window_scaling)
670 opt2 |= WND_SCALE_EN_F;
671 if (CHELSIO_CHIP_VERSION(adapter_type) > CHELSIO_T4) {
675 opt2 |= T5_OPT_2_VALID_F;
676 opt2 |= CONG_CNTRL_V(CONG_ALG_TAHOE);
680 if (ep->com.remote_addr.ss_family == AF_INET6)
681 cxgb4_clip_get(ep->com.dev->rdev.lldi.ports[0],
682 (const u32 *)&la6->sin6_addr.s6_addr, 1);
684 t4_set_arp_err_handler(skb, ep, act_open_req_arp_failure);
686 if (ep->com.remote_addr.ss_family == AF_INET) {
687 switch (CHELSIO_CHIP_VERSION(adapter_type)) {
689 req = (struct cpl_act_open_req *)skb_put(skb, wrlen);
693 t5req = (struct cpl_t5_act_open_req *)skb_put(skb,
695 INIT_TP_WR(t5req, 0);
696 req = (struct cpl_act_open_req *)t5req;
699 t6req = (struct cpl_t6_act_open_req *)skb_put(skb,
701 INIT_TP_WR(t6req, 0);
702 req = (struct cpl_act_open_req *)t6req;
703 t5req = (struct cpl_t5_act_open_req *)t6req;
706 pr_err("T%d Chip is not supported\n",
707 CHELSIO_CHIP_VERSION(adapter_type));
712 OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ,
713 ((ep->rss_qid<<14) | ep->atid)));
714 req->local_port = la->sin_port;
715 req->peer_port = ra->sin_port;
716 req->local_ip = la->sin_addr.s_addr;
717 req->peer_ip = ra->sin_addr.s_addr;
718 req->opt0 = cpu_to_be64(opt0);
720 if (is_t4(ep->com.dev->rdev.lldi.adapter_type)) {
721 req->params = cpu_to_be32(cxgb4_select_ntuple(
722 ep->com.dev->rdev.lldi.ports[0],
724 req->opt2 = cpu_to_be32(opt2);
726 t5req->params = cpu_to_be64(FILTER_TUPLE_V(
728 ep->com.dev->rdev.lldi.ports[0],
730 t5req->rsvd = cpu_to_be32(isn);
731 PDBG("%s snd_isn %u\n", __func__, t5req->rsvd);
732 t5req->opt2 = cpu_to_be32(opt2);
735 switch (CHELSIO_CHIP_VERSION(adapter_type)) {
737 req6 = (struct cpl_act_open_req6 *)skb_put(skb, wrlen);
741 t5req6 = (struct cpl_t5_act_open_req6 *)skb_put(skb,
743 INIT_TP_WR(t5req6, 0);
744 req6 = (struct cpl_act_open_req6 *)t5req6;
747 t6req6 = (struct cpl_t6_act_open_req6 *)skb_put(skb,
749 INIT_TP_WR(t6req6, 0);
750 req6 = (struct cpl_act_open_req6 *)t6req6;
751 t5req6 = (struct cpl_t5_act_open_req6 *)t6req6;
754 pr_err("T%d Chip is not supported\n",
755 CHELSIO_CHIP_VERSION(adapter_type));
760 OPCODE_TID(req6) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6,
761 ((ep->rss_qid<<14)|ep->atid)));
762 req6->local_port = la6->sin6_port;
763 req6->peer_port = ra6->sin6_port;
764 req6->local_ip_hi = *((__be64 *)(la6->sin6_addr.s6_addr));
765 req6->local_ip_lo = *((__be64 *)(la6->sin6_addr.s6_addr + 8));
766 req6->peer_ip_hi = *((__be64 *)(ra6->sin6_addr.s6_addr));
767 req6->peer_ip_lo = *((__be64 *)(ra6->sin6_addr.s6_addr + 8));
768 req6->opt0 = cpu_to_be64(opt0);
770 if (is_t4(ep->com.dev->rdev.lldi.adapter_type)) {
771 req6->params = cpu_to_be32(cxgb4_select_ntuple(
772 ep->com.dev->rdev.lldi.ports[0],
774 req6->opt2 = cpu_to_be32(opt2);
776 t5req6->params = cpu_to_be64(FILTER_TUPLE_V(
778 ep->com.dev->rdev.lldi.ports[0],
780 t5req6->rsvd = cpu_to_be32(isn);
781 PDBG("%s snd_isn %u\n", __func__, t5req6->rsvd);
782 t5req6->opt2 = cpu_to_be32(opt2);
786 set_bit(ACT_OPEN_REQ, &ep->com.history);
787 ret = c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
789 if (ret && ep->com.remote_addr.ss_family == AF_INET6)
790 cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
791 (const u32 *)&la6->sin6_addr.s6_addr, 1);
795 static void send_mpa_req(struct c4iw_ep *ep, struct sk_buff *skb,
799 struct fw_ofld_tx_data_wr *req;
800 struct mpa_message *mpa;
801 struct mpa_v2_conn_params mpa_v2_params;
803 PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen);
805 BUG_ON(skb_cloned(skb));
807 mpalen = sizeof(*mpa) + ep->plen;
808 if (mpa_rev_to_use == 2)
809 mpalen += sizeof(struct mpa_v2_conn_params);
810 wrlen = roundup(mpalen + sizeof *req, 16);
811 skb = get_skb(skb, wrlen, GFP_KERNEL);
813 connect_reply_upcall(ep, -ENOMEM);
816 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
818 req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen);
819 memset(req, 0, wrlen);
820 req->op_to_immdlen = cpu_to_be32(
821 FW_WR_OP_V(FW_OFLD_TX_DATA_WR) |
823 FW_WR_IMMDLEN_V(mpalen));
824 req->flowid_len16 = cpu_to_be32(
825 FW_WR_FLOWID_V(ep->hwtid) |
826 FW_WR_LEN16_V(wrlen >> 4));
827 req->plen = cpu_to_be32(mpalen);
828 req->tunnel_to_proxy = cpu_to_be32(
829 FW_OFLD_TX_DATA_WR_FLUSH_F |
830 FW_OFLD_TX_DATA_WR_SHOVE_F);
832 mpa = (struct mpa_message *)(req + 1);
833 memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key));
834 mpa->flags = (crc_enabled ? MPA_CRC : 0) |
835 (markers_enabled ? MPA_MARKERS : 0) |
836 (mpa_rev_to_use == 2 ? MPA_ENHANCED_RDMA_CONN : 0);
837 mpa->private_data_size = htons(ep->plen);
838 mpa->revision = mpa_rev_to_use;
839 if (mpa_rev_to_use == 1) {
840 ep->tried_with_mpa_v1 = 1;
841 ep->retry_with_mpa_v1 = 0;
844 if (mpa_rev_to_use == 2) {
845 mpa->private_data_size = htons(ntohs(mpa->private_data_size) +
846 sizeof (struct mpa_v2_conn_params));
847 PDBG("%s initiator ird %u ord %u\n", __func__, ep->ird,
849 mpa_v2_params.ird = htons((u16)ep->ird);
850 mpa_v2_params.ord = htons((u16)ep->ord);
853 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL);
854 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE)
856 htons(MPA_V2_RDMA_WRITE_RTR);
857 else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ)
859 htons(MPA_V2_RDMA_READ_RTR);
861 memcpy(mpa->private_data, &mpa_v2_params,
862 sizeof(struct mpa_v2_conn_params));
865 memcpy(mpa->private_data +
866 sizeof(struct mpa_v2_conn_params),
867 ep->mpa_pkt + sizeof(*mpa), ep->plen);
870 memcpy(mpa->private_data,
871 ep->mpa_pkt + sizeof(*mpa), ep->plen);
874 * Reference the mpa skb. This ensures the data area
875 * will remain in memory until the hw acks the tx.
876 * Function fw4_ack() will deref it.
879 t4_set_arp_err_handler(skb, NULL, arp_failure_discard);
882 c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
884 __state_set(&ep->com, MPA_REQ_SENT);
885 ep->mpa_attr.initiator = 1;
886 ep->snd_seq += mpalen;
890 static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen)
893 struct fw_ofld_tx_data_wr *req;
894 struct mpa_message *mpa;
896 struct mpa_v2_conn_params mpa_v2_params;
898 PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen);
900 mpalen = sizeof(*mpa) + plen;
901 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn)
902 mpalen += sizeof(struct mpa_v2_conn_params);
903 wrlen = roundup(mpalen + sizeof *req, 16);
905 skb = get_skb(NULL, wrlen, GFP_KERNEL);
907 printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__);
910 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
912 req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen);
913 memset(req, 0, wrlen);
914 req->op_to_immdlen = cpu_to_be32(
915 FW_WR_OP_V(FW_OFLD_TX_DATA_WR) |
917 FW_WR_IMMDLEN_V(mpalen));
918 req->flowid_len16 = cpu_to_be32(
919 FW_WR_FLOWID_V(ep->hwtid) |
920 FW_WR_LEN16_V(wrlen >> 4));
921 req->plen = cpu_to_be32(mpalen);
922 req->tunnel_to_proxy = cpu_to_be32(
923 FW_OFLD_TX_DATA_WR_FLUSH_F |
924 FW_OFLD_TX_DATA_WR_SHOVE_F);
926 mpa = (struct mpa_message *)(req + 1);
927 memset(mpa, 0, sizeof(*mpa));
928 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key));
929 mpa->flags = MPA_REJECT;
930 mpa->revision = ep->mpa_attr.version;
931 mpa->private_data_size = htons(plen);
933 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
934 mpa->flags |= MPA_ENHANCED_RDMA_CONN;
935 mpa->private_data_size = htons(ntohs(mpa->private_data_size) +
936 sizeof (struct mpa_v2_conn_params));
937 mpa_v2_params.ird = htons(((u16)ep->ird) |
938 (peer2peer ? MPA_V2_PEER2PEER_MODEL :
940 mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ?
942 FW_RI_INIT_P2PTYPE_RDMA_WRITE ?
943 MPA_V2_RDMA_WRITE_RTR : p2p_type ==
944 FW_RI_INIT_P2PTYPE_READ_REQ ?
945 MPA_V2_RDMA_READ_RTR : 0) : 0));
946 memcpy(mpa->private_data, &mpa_v2_params,
947 sizeof(struct mpa_v2_conn_params));
950 memcpy(mpa->private_data +
951 sizeof(struct mpa_v2_conn_params), pdata, plen);
954 memcpy(mpa->private_data, pdata, plen);
957 * Reference the mpa skb again. This ensures the data area
958 * will remain in memory until the hw acks the tx.
959 * Function fw4_ack() will deref it.
962 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
963 t4_set_arp_err_handler(skb, NULL, arp_failure_discard);
966 ep->snd_seq += mpalen;
967 return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
970 static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen)
973 struct fw_ofld_tx_data_wr *req;
974 struct mpa_message *mpa;
976 struct mpa_v2_conn_params mpa_v2_params;
978 PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen);
980 mpalen = sizeof(*mpa) + plen;
981 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn)
982 mpalen += sizeof(struct mpa_v2_conn_params);
983 wrlen = roundup(mpalen + sizeof *req, 16);
985 skb = get_skb(NULL, wrlen, GFP_KERNEL);
987 printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__);
990 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
992 req = (struct fw_ofld_tx_data_wr *) skb_put(skb, wrlen);
993 memset(req, 0, wrlen);
994 req->op_to_immdlen = cpu_to_be32(
995 FW_WR_OP_V(FW_OFLD_TX_DATA_WR) |
997 FW_WR_IMMDLEN_V(mpalen));
998 req->flowid_len16 = cpu_to_be32(
999 FW_WR_FLOWID_V(ep->hwtid) |
1000 FW_WR_LEN16_V(wrlen >> 4));
1001 req->plen = cpu_to_be32(mpalen);
1002 req->tunnel_to_proxy = cpu_to_be32(
1003 FW_OFLD_TX_DATA_WR_FLUSH_F |
1004 FW_OFLD_TX_DATA_WR_SHOVE_F);
1006 mpa = (struct mpa_message *)(req + 1);
1007 memset(mpa, 0, sizeof(*mpa));
1008 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key));
1009 mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) |
1010 (markers_enabled ? MPA_MARKERS : 0);
1011 mpa->revision = ep->mpa_attr.version;
1012 mpa->private_data_size = htons(plen);
1014 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
1015 mpa->flags |= MPA_ENHANCED_RDMA_CONN;
1016 mpa->private_data_size = htons(ntohs(mpa->private_data_size) +
1017 sizeof (struct mpa_v2_conn_params));
1018 mpa_v2_params.ird = htons((u16)ep->ird);
1019 mpa_v2_params.ord = htons((u16)ep->ord);
1020 if (peer2peer && (ep->mpa_attr.p2p_type !=
1021 FW_RI_INIT_P2PTYPE_DISABLED)) {
1022 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL);
1024 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE)
1025 mpa_v2_params.ord |=
1026 htons(MPA_V2_RDMA_WRITE_RTR);
1027 else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ)
1028 mpa_v2_params.ord |=
1029 htons(MPA_V2_RDMA_READ_RTR);
1032 memcpy(mpa->private_data, &mpa_v2_params,
1033 sizeof(struct mpa_v2_conn_params));
1036 memcpy(mpa->private_data +
1037 sizeof(struct mpa_v2_conn_params), pdata, plen);
1040 memcpy(mpa->private_data, pdata, plen);
1043 * Reference the mpa skb. This ensures the data area
1044 * will remain in memory until the hw acks the tx.
1045 * Function fw4_ack() will deref it.
1048 t4_set_arp_err_handler(skb, NULL, arp_failure_discard);
1050 __state_set(&ep->com, MPA_REP_SENT);
1051 ep->snd_seq += mpalen;
1052 return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
1055 static int act_establish(struct c4iw_dev *dev, struct sk_buff *skb)
1058 struct cpl_act_establish *req = cplhdr(skb);
1059 unsigned int tid = GET_TID(req);
1060 unsigned int atid = TID_TID_G(ntohl(req->tos_atid));
1061 struct tid_info *t = dev->rdev.lldi.tids;
1063 ep = lookup_atid(t, atid);
1065 PDBG("%s ep %p tid %u snd_isn %u rcv_isn %u\n", __func__, ep, tid,
1066 be32_to_cpu(req->snd_isn), be32_to_cpu(req->rcv_isn));
1068 mutex_lock(&ep->com.mutex);
1069 dst_confirm(ep->dst);
1071 /* setup the hwtid for this connection */
1073 cxgb4_insert_tid(t, ep, tid);
1074 insert_handle(dev, &dev->hwtid_idr, ep, ep->hwtid);
1076 ep->snd_seq = be32_to_cpu(req->snd_isn);
1077 ep->rcv_seq = be32_to_cpu(req->rcv_isn);
1079 set_emss(ep, ntohs(req->tcp_opt));
1081 /* dealloc the atid */
1082 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, atid);
1083 cxgb4_free_atid(t, atid);
1084 set_bit(ACT_ESTAB, &ep->com.history);
1086 /* start MPA negotiation */
1087 send_flowc(ep, NULL);
1088 if (ep->retry_with_mpa_v1)
1089 send_mpa_req(ep, skb, 1);
1091 send_mpa_req(ep, skb, mpa_rev);
1092 mutex_unlock(&ep->com.mutex);
1096 static void close_complete_upcall(struct c4iw_ep *ep, int status)
1098 struct iw_cm_event event;
1100 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1101 memset(&event, 0, sizeof(event));
1102 event.event = IW_CM_EVENT_CLOSE;
1103 event.status = status;
1104 if (ep->com.cm_id) {
1105 PDBG("close complete delivered ep %p cm_id %p tid %u\n",
1106 ep, ep->com.cm_id, ep->hwtid);
1107 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1108 ep->com.cm_id->rem_ref(ep->com.cm_id);
1109 ep->com.cm_id = NULL;
1110 set_bit(CLOSE_UPCALL, &ep->com.history);
1114 static int abort_connection(struct c4iw_ep *ep, struct sk_buff *skb, gfp_t gfp)
1116 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1117 __state_set(&ep->com, ABORTING);
1118 set_bit(ABORT_CONN, &ep->com.history);
1119 return send_abort(ep, skb, gfp);
1122 static void peer_close_upcall(struct c4iw_ep *ep)
1124 struct iw_cm_event event;
1126 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1127 memset(&event, 0, sizeof(event));
1128 event.event = IW_CM_EVENT_DISCONNECT;
1129 if (ep->com.cm_id) {
1130 PDBG("peer close delivered ep %p cm_id %p tid %u\n",
1131 ep, ep->com.cm_id, ep->hwtid);
1132 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1133 set_bit(DISCONN_UPCALL, &ep->com.history);
1137 static void peer_abort_upcall(struct c4iw_ep *ep)
1139 struct iw_cm_event event;
1141 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1142 memset(&event, 0, sizeof(event));
1143 event.event = IW_CM_EVENT_CLOSE;
1144 event.status = -ECONNRESET;
1145 if (ep->com.cm_id) {
1146 PDBG("abort delivered ep %p cm_id %p tid %u\n", ep,
1147 ep->com.cm_id, ep->hwtid);
1148 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1149 ep->com.cm_id->rem_ref(ep->com.cm_id);
1150 ep->com.cm_id = NULL;
1151 set_bit(ABORT_UPCALL, &ep->com.history);
1155 static void connect_reply_upcall(struct c4iw_ep *ep, int status)
1157 struct iw_cm_event event;
1159 PDBG("%s ep %p tid %u status %d\n", __func__, ep, ep->hwtid, status);
1160 memset(&event, 0, sizeof(event));
1161 event.event = IW_CM_EVENT_CONNECT_REPLY;
1162 event.status = status;
1163 memcpy(&event.local_addr, &ep->com.local_addr,
1164 sizeof(ep->com.local_addr));
1165 memcpy(&event.remote_addr, &ep->com.remote_addr,
1166 sizeof(ep->com.remote_addr));
1168 if ((status == 0) || (status == -ECONNREFUSED)) {
1169 if (!ep->tried_with_mpa_v1) {
1170 /* this means MPA_v2 is used */
1171 event.ord = ep->ird;
1172 event.ird = ep->ord;
1173 event.private_data_len = ep->plen -
1174 sizeof(struct mpa_v2_conn_params);
1175 event.private_data = ep->mpa_pkt +
1176 sizeof(struct mpa_message) +
1177 sizeof(struct mpa_v2_conn_params);
1179 /* this means MPA_v1 is used */
1180 event.ord = cur_max_read_depth(ep->com.dev);
1181 event.ird = cur_max_read_depth(ep->com.dev);
1182 event.private_data_len = ep->plen;
1183 event.private_data = ep->mpa_pkt +
1184 sizeof(struct mpa_message);
1188 PDBG("%s ep %p tid %u status %d\n", __func__, ep,
1190 set_bit(CONN_RPL_UPCALL, &ep->com.history);
1191 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1194 ep->com.cm_id->rem_ref(ep->com.cm_id);
1195 ep->com.cm_id = NULL;
1199 static int connect_request_upcall(struct c4iw_ep *ep)
1201 struct iw_cm_event event;
1204 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1205 memset(&event, 0, sizeof(event));
1206 event.event = IW_CM_EVENT_CONNECT_REQUEST;
1207 memcpy(&event.local_addr, &ep->com.local_addr,
1208 sizeof(ep->com.local_addr));
1209 memcpy(&event.remote_addr, &ep->com.remote_addr,
1210 sizeof(ep->com.remote_addr));
1211 event.provider_data = ep;
1212 if (!ep->tried_with_mpa_v1) {
1213 /* this means MPA_v2 is used */
1214 event.ord = ep->ord;
1215 event.ird = ep->ird;
1216 event.private_data_len = ep->plen -
1217 sizeof(struct mpa_v2_conn_params);
1218 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) +
1219 sizeof(struct mpa_v2_conn_params);
1221 /* this means MPA_v1 is used. Send max supported */
1222 event.ord = cur_max_read_depth(ep->com.dev);
1223 event.ird = cur_max_read_depth(ep->com.dev);
1224 event.private_data_len = ep->plen;
1225 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message);
1227 c4iw_get_ep(&ep->com);
1228 ret = ep->parent_ep->com.cm_id->event_handler(ep->parent_ep->com.cm_id,
1231 c4iw_put_ep(&ep->com);
1232 set_bit(CONNREQ_UPCALL, &ep->com.history);
1233 c4iw_put_ep(&ep->parent_ep->com);
1237 static void established_upcall(struct c4iw_ep *ep)
1239 struct iw_cm_event event;
1241 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1242 memset(&event, 0, sizeof(event));
1243 event.event = IW_CM_EVENT_ESTABLISHED;
1244 event.ird = ep->ord;
1245 event.ord = ep->ird;
1246 if (ep->com.cm_id) {
1247 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1248 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1249 set_bit(ESTAB_UPCALL, &ep->com.history);
1253 static int update_rx_credits(struct c4iw_ep *ep, u32 credits)
1255 struct cpl_rx_data_ack *req;
1256 struct sk_buff *skb;
1257 int wrlen = roundup(sizeof *req, 16);
1259 PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits);
1260 skb = get_skb(NULL, wrlen, GFP_KERNEL);
1262 printk(KERN_ERR MOD "update_rx_credits - cannot alloc skb!\n");
1267 * If we couldn't specify the entire rcv window at connection setup
1268 * due to the limit in the number of bits in the RCV_BUFSIZ field,
1269 * then add the overage in to the credits returned.
1271 if (ep->rcv_win > RCV_BUFSIZ_M * 1024)
1272 credits += ep->rcv_win - RCV_BUFSIZ_M * 1024;
1274 req = (struct cpl_rx_data_ack *) skb_put(skb, wrlen);
1275 memset(req, 0, wrlen);
1276 INIT_TP_WR(req, ep->hwtid);
1277 OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_RX_DATA_ACK,
1279 req->credit_dack = cpu_to_be32(credits | RX_FORCE_ACK_F |
1281 RX_DACK_MODE_V(dack_mode));
1282 set_wr_txq(skb, CPL_PRIORITY_ACK, ep->ctrlq_idx);
1283 c4iw_ofld_send(&ep->com.dev->rdev, skb);
1287 #define RELAXED_IRD_NEGOTIATION 1
1289 static int process_mpa_reply(struct c4iw_ep *ep, struct sk_buff *skb)
1291 struct mpa_message *mpa;
1292 struct mpa_v2_conn_params *mpa_v2_params;
1294 u16 resp_ird, resp_ord;
1295 u8 rtr_mismatch = 0, insuff_ird = 0;
1296 struct c4iw_qp_attributes attrs;
1297 enum c4iw_qp_attr_mask mask;
1301 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1304 * Stop mpa timer. If it expired, then
1305 * we ignore the MPA reply. process_timeout()
1306 * will abort the connection.
1308 if (stop_ep_timer(ep))
1312 * If we get more than the supported amount of private data
1313 * then we must fail this connection.
1315 if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) {
1321 * copy the new data into our accumulation buffer.
1323 skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]),
1325 ep->mpa_pkt_len += skb->len;
1328 * if we don't even have the mpa message, then bail.
1330 if (ep->mpa_pkt_len < sizeof(*mpa))
1332 mpa = (struct mpa_message *) ep->mpa_pkt;
1334 /* Validate MPA header. */
1335 if (mpa->revision > mpa_rev) {
1336 printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d,"
1337 " Received = %d\n", __func__, mpa_rev, mpa->revision);
1341 if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) {
1346 plen = ntohs(mpa->private_data_size);
1349 * Fail if there's too much private data.
1351 if (plen > MPA_MAX_PRIVATE_DATA) {
1357 * If plen does not account for pkt size
1359 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) {
1364 ep->plen = (u8) plen;
1367 * If we don't have all the pdata yet, then bail.
1368 * We'll continue process when more data arrives.
1370 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen))
1373 if (mpa->flags & MPA_REJECT) {
1374 err = -ECONNREFUSED;
1379 * If we get here we have accumulated the entire mpa
1380 * start reply message including private data. And
1381 * the MPA header is valid.
1383 __state_set(&ep->com, FPDU_MODE);
1384 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0;
1385 ep->mpa_attr.recv_marker_enabled = markers_enabled;
1386 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0;
1387 ep->mpa_attr.version = mpa->revision;
1388 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
1390 if (mpa->revision == 2) {
1391 ep->mpa_attr.enhanced_rdma_conn =
1392 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0;
1393 if (ep->mpa_attr.enhanced_rdma_conn) {
1394 mpa_v2_params = (struct mpa_v2_conn_params *)
1395 (ep->mpa_pkt + sizeof(*mpa));
1396 resp_ird = ntohs(mpa_v2_params->ird) &
1397 MPA_V2_IRD_ORD_MASK;
1398 resp_ord = ntohs(mpa_v2_params->ord) &
1399 MPA_V2_IRD_ORD_MASK;
1400 PDBG("%s responder ird %u ord %u ep ird %u ord %u\n",
1401 __func__, resp_ird, resp_ord, ep->ird, ep->ord);
1404 * This is a double-check. Ideally, below checks are
1405 * not required since ird/ord stuff has been taken
1406 * care of in c4iw_accept_cr
1408 if (ep->ird < resp_ord) {
1409 if (RELAXED_IRD_NEGOTIATION && resp_ord <=
1410 ep->com.dev->rdev.lldi.max_ordird_qp)
1414 } else if (ep->ird > resp_ord) {
1417 if (ep->ord > resp_ird) {
1418 if (RELAXED_IRD_NEGOTIATION)
1429 if (ntohs(mpa_v2_params->ird) &
1430 MPA_V2_PEER2PEER_MODEL) {
1431 if (ntohs(mpa_v2_params->ord) &
1432 MPA_V2_RDMA_WRITE_RTR)
1433 ep->mpa_attr.p2p_type =
1434 FW_RI_INIT_P2PTYPE_RDMA_WRITE;
1435 else if (ntohs(mpa_v2_params->ord) &
1436 MPA_V2_RDMA_READ_RTR)
1437 ep->mpa_attr.p2p_type =
1438 FW_RI_INIT_P2PTYPE_READ_REQ;
1441 } else if (mpa->revision == 1)
1443 ep->mpa_attr.p2p_type = p2p_type;
1445 PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, "
1446 "xmit_marker_enabled=%d, version=%d p2p_type=%d local-p2p_type = "
1447 "%d\n", __func__, ep->mpa_attr.crc_enabled,
1448 ep->mpa_attr.recv_marker_enabled,
1449 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version,
1450 ep->mpa_attr.p2p_type, p2p_type);
1453 * If responder's RTR does not match with that of initiator, assign
1454 * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not
1455 * generated when moving QP to RTS state.
1456 * A TERM message will be sent after QP has moved to RTS state
1458 if ((ep->mpa_attr.version == 2) && peer2peer &&
1459 (ep->mpa_attr.p2p_type != p2p_type)) {
1460 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
1464 attrs.mpa_attr = ep->mpa_attr;
1465 attrs.max_ird = ep->ird;
1466 attrs.max_ord = ep->ord;
1467 attrs.llp_stream_handle = ep;
1468 attrs.next_state = C4IW_QP_STATE_RTS;
1470 mask = C4IW_QP_ATTR_NEXT_STATE |
1471 C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR |
1472 C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD;
1474 /* bind QP and TID with INIT_WR */
1475 err = c4iw_modify_qp(ep->com.qp->rhp,
1476 ep->com.qp, mask, &attrs, 1);
1481 * If responder's RTR requirement did not match with what initiator
1482 * supports, generate TERM message
1485 printk(KERN_ERR "%s: RTR mismatch, sending TERM\n", __func__);
1486 attrs.layer_etype = LAYER_MPA | DDP_LLP;
1487 attrs.ecode = MPA_NOMATCH_RTR;
1488 attrs.next_state = C4IW_QP_STATE_TERMINATE;
1489 attrs.send_term = 1;
1490 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
1491 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
1498 * Generate TERM if initiator IRD is not sufficient for responder
1499 * provided ORD. Currently, we do the same behaviour even when
1500 * responder provided IRD is also not sufficient as regards to
1504 printk(KERN_ERR "%s: Insufficient IRD, sending TERM\n",
1506 attrs.layer_etype = LAYER_MPA | DDP_LLP;
1507 attrs.ecode = MPA_INSUFF_IRD;
1508 attrs.next_state = C4IW_QP_STATE_TERMINATE;
1509 attrs.send_term = 1;
1510 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
1511 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
1518 __state_set(&ep->com, ABORTING);
1519 send_abort(ep, skb, GFP_KERNEL);
1521 connect_reply_upcall(ep, err);
1525 static void process_mpa_request(struct c4iw_ep *ep, struct sk_buff *skb)
1527 struct mpa_message *mpa;
1528 struct mpa_v2_conn_params *mpa_v2_params;
1531 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1534 * If we get more than the supported amount of private data
1535 * then we must fail this connection.
1537 if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) {
1538 (void)stop_ep_timer(ep);
1539 abort_connection(ep, skb, GFP_KERNEL);
1543 PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__);
1546 * Copy the new data into our accumulation buffer.
1548 skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]),
1550 ep->mpa_pkt_len += skb->len;
1553 * If we don't even have the mpa message, then bail.
1554 * We'll continue process when more data arrives.
1556 if (ep->mpa_pkt_len < sizeof(*mpa))
1559 PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__);
1560 mpa = (struct mpa_message *) ep->mpa_pkt;
1563 * Validate MPA Header.
1565 if (mpa->revision > mpa_rev) {
1566 printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d,"
1567 " Received = %d\n", __func__, mpa_rev, mpa->revision);
1568 (void)stop_ep_timer(ep);
1569 abort_connection(ep, skb, GFP_KERNEL);
1573 if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) {
1574 (void)stop_ep_timer(ep);
1575 abort_connection(ep, skb, GFP_KERNEL);
1579 plen = ntohs(mpa->private_data_size);
1582 * Fail if there's too much private data.
1584 if (plen > MPA_MAX_PRIVATE_DATA) {
1585 (void)stop_ep_timer(ep);
1586 abort_connection(ep, skb, GFP_KERNEL);
1591 * If plen does not account for pkt size
1593 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) {
1594 (void)stop_ep_timer(ep);
1595 abort_connection(ep, skb, GFP_KERNEL);
1598 ep->plen = (u8) plen;
1601 * If we don't have all the pdata yet, then bail.
1603 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen))
1607 * If we get here we have accumulated the entire mpa
1608 * start reply message including private data.
1610 ep->mpa_attr.initiator = 0;
1611 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0;
1612 ep->mpa_attr.recv_marker_enabled = markers_enabled;
1613 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0;
1614 ep->mpa_attr.version = mpa->revision;
1615 if (mpa->revision == 1)
1616 ep->tried_with_mpa_v1 = 1;
1617 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
1619 if (mpa->revision == 2) {
1620 ep->mpa_attr.enhanced_rdma_conn =
1621 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0;
1622 if (ep->mpa_attr.enhanced_rdma_conn) {
1623 mpa_v2_params = (struct mpa_v2_conn_params *)
1624 (ep->mpa_pkt + sizeof(*mpa));
1625 ep->ird = ntohs(mpa_v2_params->ird) &
1626 MPA_V2_IRD_ORD_MASK;
1627 ep->ord = ntohs(mpa_v2_params->ord) &
1628 MPA_V2_IRD_ORD_MASK;
1629 PDBG("%s initiator ird %u ord %u\n", __func__, ep->ird,
1631 if (ntohs(mpa_v2_params->ird) & MPA_V2_PEER2PEER_MODEL)
1633 if (ntohs(mpa_v2_params->ord) &
1634 MPA_V2_RDMA_WRITE_RTR)
1635 ep->mpa_attr.p2p_type =
1636 FW_RI_INIT_P2PTYPE_RDMA_WRITE;
1637 else if (ntohs(mpa_v2_params->ord) &
1638 MPA_V2_RDMA_READ_RTR)
1639 ep->mpa_attr.p2p_type =
1640 FW_RI_INIT_P2PTYPE_READ_REQ;
1643 } else if (mpa->revision == 1)
1645 ep->mpa_attr.p2p_type = p2p_type;
1647 PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, "
1648 "xmit_marker_enabled=%d, version=%d p2p_type=%d\n", __func__,
1649 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled,
1650 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version,
1651 ep->mpa_attr.p2p_type);
1654 * If the endpoint timer already expired, then we ignore
1655 * the start request. process_timeout() will abort
1658 if (!stop_ep_timer(ep)) {
1659 __state_set(&ep->com, MPA_REQ_RCVD);
1662 mutex_lock_nested(&ep->parent_ep->com.mutex,
1663 SINGLE_DEPTH_NESTING);
1664 if (ep->parent_ep->com.state != DEAD) {
1665 if (connect_request_upcall(ep))
1666 abort_connection(ep, skb, GFP_KERNEL);
1668 abort_connection(ep, skb, GFP_KERNEL);
1670 mutex_unlock(&ep->parent_ep->com.mutex);
1675 static int rx_data(struct c4iw_dev *dev, struct sk_buff *skb)
1678 struct cpl_rx_data *hdr = cplhdr(skb);
1679 unsigned int dlen = ntohs(hdr->len);
1680 unsigned int tid = GET_TID(hdr);
1681 struct tid_info *t = dev->rdev.lldi.tids;
1682 __u8 status = hdr->status;
1685 ep = lookup_tid(t, tid);
1688 PDBG("%s ep %p tid %u dlen %u\n", __func__, ep, ep->hwtid, dlen);
1689 skb_pull(skb, sizeof(*hdr));
1690 skb_trim(skb, dlen);
1691 mutex_lock(&ep->com.mutex);
1693 /* update RX credits */
1694 update_rx_credits(ep, dlen);
1696 switch (ep->com.state) {
1698 ep->rcv_seq += dlen;
1699 disconnect = process_mpa_reply(ep, skb);
1702 ep->rcv_seq += dlen;
1703 process_mpa_request(ep, skb);
1706 struct c4iw_qp_attributes attrs;
1707 BUG_ON(!ep->com.qp);
1709 pr_err("%s Unexpected streaming data." \
1710 " qpid %u ep %p state %d tid %u status %d\n",
1711 __func__, ep->com.qp->wq.sq.qid, ep,
1712 ep->com.state, ep->hwtid, status);
1713 attrs.next_state = C4IW_QP_STATE_TERMINATE;
1714 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
1715 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
1722 mutex_unlock(&ep->com.mutex);
1724 c4iw_ep_disconnect(ep, 0, GFP_KERNEL);
1728 static int abort_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
1731 struct cpl_abort_rpl_rss *rpl = cplhdr(skb);
1733 unsigned int tid = GET_TID(rpl);
1734 struct tid_info *t = dev->rdev.lldi.tids;
1736 ep = lookup_tid(t, tid);
1738 printk(KERN_WARNING MOD "Abort rpl to freed endpoint\n");
1741 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1742 mutex_lock(&ep->com.mutex);
1743 switch (ep->com.state) {
1745 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
1746 __state_set(&ep->com, DEAD);
1750 printk(KERN_ERR "%s ep %p state %d\n",
1751 __func__, ep, ep->com.state);
1754 mutex_unlock(&ep->com.mutex);
1757 release_ep_resources(ep);
1761 static void send_fw_act_open_req(struct c4iw_ep *ep, unsigned int atid)
1763 struct sk_buff *skb;
1764 struct fw_ofld_connection_wr *req;
1765 unsigned int mtu_idx;
1767 struct sockaddr_in *sin;
1770 skb = get_skb(NULL, sizeof(*req), GFP_KERNEL);
1771 req = (struct fw_ofld_connection_wr *)__skb_put(skb, sizeof(*req));
1772 memset(req, 0, sizeof(*req));
1773 req->op_compl = htonl(WR_OP_V(FW_OFLD_CONNECTION_WR));
1774 req->len16_pkd = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*req), 16)));
1775 req->le.filter = cpu_to_be32(cxgb4_select_ntuple(
1776 ep->com.dev->rdev.lldi.ports[0],
1778 sin = (struct sockaddr_in *)&ep->com.local_addr;
1779 req->le.lport = sin->sin_port;
1780 req->le.u.ipv4.lip = sin->sin_addr.s_addr;
1781 sin = (struct sockaddr_in *)&ep->com.remote_addr;
1782 req->le.pport = sin->sin_port;
1783 req->le.u.ipv4.pip = sin->sin_addr.s_addr;
1784 req->tcb.t_state_to_astid =
1785 htonl(FW_OFLD_CONNECTION_WR_T_STATE_V(TCP_SYN_SENT) |
1786 FW_OFLD_CONNECTION_WR_ASTID_V(atid));
1787 req->tcb.cplrxdataack_cplpassacceptrpl =
1788 htons(FW_OFLD_CONNECTION_WR_CPLRXDATAACK_F);
1789 req->tcb.tx_max = (__force __be32) jiffies;
1790 req->tcb.rcv_adv = htons(1);
1791 best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx,
1792 enable_tcp_timestamps,
1793 (AF_INET == ep->com.remote_addr.ss_family) ? 0 : 1);
1794 wscale = compute_wscale(rcv_win);
1797 * Specify the largest window that will fit in opt0. The
1798 * remainder will be specified in the rx_data_ack.
1800 win = ep->rcv_win >> 10;
1801 if (win > RCV_BUFSIZ_M)
1804 req->tcb.opt0 = (__force __be64) (TCAM_BYPASS_F |
1805 (nocong ? NO_CONG_F : 0) |
1808 WND_SCALE_V(wscale) |
1809 MSS_IDX_V(mtu_idx) |
1810 L2T_IDX_V(ep->l2t->idx) |
1811 TX_CHAN_V(ep->tx_chan) |
1812 SMAC_SEL_V(ep->smac_idx) |
1814 ULP_MODE_V(ULP_MODE_TCPDDP) |
1816 req->tcb.opt2 = (__force __be32) (PACE_V(1) |
1817 TX_QUEUE_V(ep->com.dev->rdev.lldi.tx_modq[ep->tx_chan]) |
1819 CCTRL_ECN_V(enable_ecn) |
1820 RSS_QUEUE_VALID_F | RSS_QUEUE_V(ep->rss_qid));
1821 if (enable_tcp_timestamps)
1822 req->tcb.opt2 |= (__force __be32)TSTAMPS_EN_F;
1823 if (enable_tcp_sack)
1824 req->tcb.opt2 |= (__force __be32)SACK_EN_F;
1825 if (wscale && enable_tcp_window_scaling)
1826 req->tcb.opt2 |= (__force __be32)WND_SCALE_EN_F;
1827 req->tcb.opt0 = cpu_to_be64((__force u64)req->tcb.opt0);
1828 req->tcb.opt2 = cpu_to_be32((__force u32)req->tcb.opt2);
1829 set_wr_txq(skb, CPL_PRIORITY_CONTROL, ep->ctrlq_idx);
1830 set_bit(ACT_OFLD_CONN, &ep->com.history);
1831 c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
1835 * Return whether a failed active open has allocated a TID
1837 static inline int act_open_has_tid(int status)
1839 return status != CPL_ERR_TCAM_FULL && status != CPL_ERR_CONN_EXIST &&
1840 status != CPL_ERR_ARP_MISS;
1843 /* Returns whether a CPL status conveys negative advice.
1845 static int is_neg_adv(unsigned int status)
1847 return status == CPL_ERR_RTX_NEG_ADVICE ||
1848 status == CPL_ERR_PERSIST_NEG_ADVICE ||
1849 status == CPL_ERR_KEEPALV_NEG_ADVICE;
1852 static char *neg_adv_str(unsigned int status)
1855 case CPL_ERR_RTX_NEG_ADVICE:
1856 return "Retransmit timeout";
1857 case CPL_ERR_PERSIST_NEG_ADVICE:
1858 return "Persist timeout";
1859 case CPL_ERR_KEEPALV_NEG_ADVICE:
1860 return "Keepalive timeout";
1866 static void set_tcp_window(struct c4iw_ep *ep, struct port_info *pi)
1868 ep->snd_win = snd_win;
1869 ep->rcv_win = rcv_win;
1870 PDBG("%s snd_win %d rcv_win %d\n", __func__, ep->snd_win, ep->rcv_win);
1873 #define ACT_OPEN_RETRY_COUNT 2
1875 static int import_ep(struct c4iw_ep *ep, int iptype, __u8 *peer_ip,
1876 struct dst_entry *dst, struct c4iw_dev *cdev,
1877 bool clear_mpa_v1, enum chip_type adapter_type)
1879 struct neighbour *n;
1881 struct net_device *pdev;
1883 n = dst_neigh_lookup(dst, peer_ip);
1889 if (n->dev->flags & IFF_LOOPBACK) {
1891 pdev = ip_dev_find(&init_net, *(__be32 *)peer_ip);
1892 else if (IS_ENABLED(CONFIG_IPV6))
1893 for_each_netdev(&init_net, pdev) {
1894 if (ipv6_chk_addr(&init_net,
1895 (struct in6_addr *)peer_ip,
1906 ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t,
1910 ep->mtu = pdev->mtu;
1911 ep->tx_chan = cxgb4_port_chan(pdev);
1912 ep->smac_idx = cxgb4_tp_smt_idx(adapter_type,
1913 cxgb4_port_viid(pdev));
1914 step = cdev->rdev.lldi.ntxq /
1915 cdev->rdev.lldi.nchan;
1916 ep->txq_idx = cxgb4_port_idx(pdev) * step;
1917 step = cdev->rdev.lldi.nrxq /
1918 cdev->rdev.lldi.nchan;
1919 ep->ctrlq_idx = cxgb4_port_idx(pdev);
1920 ep->rss_qid = cdev->rdev.lldi.rxq_ids[
1921 cxgb4_port_idx(pdev) * step];
1922 set_tcp_window(ep, (struct port_info *)netdev_priv(pdev));
1925 pdev = get_real_dev(n->dev);
1926 ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t,
1930 ep->mtu = dst_mtu(dst);
1931 ep->tx_chan = cxgb4_port_chan(pdev);
1932 ep->smac_idx = cxgb4_tp_smt_idx(adapter_type,
1933 cxgb4_port_viid(pdev));
1934 step = cdev->rdev.lldi.ntxq /
1935 cdev->rdev.lldi.nchan;
1936 ep->txq_idx = cxgb4_port_idx(pdev) * step;
1937 ep->ctrlq_idx = cxgb4_port_idx(pdev);
1938 step = cdev->rdev.lldi.nrxq /
1939 cdev->rdev.lldi.nchan;
1940 ep->rss_qid = cdev->rdev.lldi.rxq_ids[
1941 cxgb4_port_idx(pdev) * step];
1942 set_tcp_window(ep, (struct port_info *)netdev_priv(pdev));
1945 ep->retry_with_mpa_v1 = 0;
1946 ep->tried_with_mpa_v1 = 0;
1958 static int c4iw_reconnect(struct c4iw_ep *ep)
1961 struct sockaddr_in *laddr = (struct sockaddr_in *)
1962 &ep->com.cm_id->m_local_addr;
1963 struct sockaddr_in *raddr = (struct sockaddr_in *)
1964 &ep->com.cm_id->m_remote_addr;
1965 struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *)
1966 &ep->com.cm_id->m_local_addr;
1967 struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)
1968 &ep->com.cm_id->m_remote_addr;
1972 PDBG("%s qp %p cm_id %p\n", __func__, ep->com.qp, ep->com.cm_id);
1973 init_timer(&ep->timer);
1976 * Allocate an active TID to initiate a TCP connection.
1978 ep->atid = cxgb4_alloc_atid(ep->com.dev->rdev.lldi.tids, ep);
1979 if (ep->atid == -1) {
1980 pr_err("%s - cannot alloc atid.\n", __func__);
1984 insert_handle(ep->com.dev, &ep->com.dev->atid_idr, ep, ep->atid);
1987 if (ep->com.cm_id->m_local_addr.ss_family == AF_INET) {
1988 ep->dst = find_route(ep->com.dev, laddr->sin_addr.s_addr,
1989 raddr->sin_addr.s_addr, laddr->sin_port,
1990 raddr->sin_port, 0);
1992 ra = (__u8 *)&raddr->sin_addr;
1994 ep->dst = find_route6(ep->com.dev, laddr6->sin6_addr.s6_addr,
1995 raddr6->sin6_addr.s6_addr,
1996 laddr6->sin6_port, raddr6->sin6_port, 0,
1997 raddr6->sin6_scope_id);
1999 ra = (__u8 *)&raddr6->sin6_addr;
2002 pr_err("%s - cannot find route.\n", __func__);
2003 err = -EHOSTUNREACH;
2006 err = import_ep(ep, iptype, ra, ep->dst, ep->com.dev, false,
2007 ep->com.dev->rdev.lldi.adapter_type);
2009 pr_err("%s - cannot alloc l2e.\n", __func__);
2013 PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n",
2014 __func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid,
2017 state_set(&ep->com, CONNECTING);
2020 /* send connect request to rnic */
2021 err = send_connect(ep);
2025 cxgb4_l2t_release(ep->l2t);
2027 dst_release(ep->dst);
2029 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid);
2030 cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid);
2033 * remember to send notification to upper layer.
2034 * We are in here so the upper layer is not aware that this is
2035 * re-connect attempt and so, upper layer is still waiting for
2036 * response of 1st connect request.
2038 connect_reply_upcall(ep, -ECONNRESET);
2039 c4iw_put_ep(&ep->com);
2044 static int act_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
2047 struct cpl_act_open_rpl *rpl = cplhdr(skb);
2048 unsigned int atid = TID_TID_G(AOPEN_ATID_G(
2049 ntohl(rpl->atid_status)));
2050 struct tid_info *t = dev->rdev.lldi.tids;
2051 int status = AOPEN_STATUS_G(ntohl(rpl->atid_status));
2052 struct sockaddr_in *la;
2053 struct sockaddr_in *ra;
2054 struct sockaddr_in6 *la6;
2055 struct sockaddr_in6 *ra6;
2057 ep = lookup_atid(t, atid);
2058 la = (struct sockaddr_in *)&ep->com.local_addr;
2059 ra = (struct sockaddr_in *)&ep->com.remote_addr;
2060 la6 = (struct sockaddr_in6 *)&ep->com.local_addr;
2061 ra6 = (struct sockaddr_in6 *)&ep->com.remote_addr;
2063 PDBG("%s ep %p atid %u status %u errno %d\n", __func__, ep, atid,
2064 status, status2errno(status));
2066 if (is_neg_adv(status)) {
2067 PDBG("%s Connection problems for atid %u status %u (%s)\n",
2068 __func__, atid, status, neg_adv_str(status));
2069 ep->stats.connect_neg_adv++;
2070 mutex_lock(&dev->rdev.stats.lock);
2071 dev->rdev.stats.neg_adv++;
2072 mutex_unlock(&dev->rdev.stats.lock);
2076 set_bit(ACT_OPEN_RPL, &ep->com.history);
2079 * Log interesting failures.
2082 case CPL_ERR_CONN_RESET:
2083 case CPL_ERR_CONN_TIMEDOUT:
2085 case CPL_ERR_TCAM_FULL:
2086 mutex_lock(&dev->rdev.stats.lock);
2087 dev->rdev.stats.tcam_full++;
2088 mutex_unlock(&dev->rdev.stats.lock);
2089 if (ep->com.local_addr.ss_family == AF_INET &&
2090 dev->rdev.lldi.enable_fw_ofld_conn) {
2091 send_fw_act_open_req(ep,
2092 TID_TID_G(AOPEN_ATID_G(
2093 ntohl(rpl->atid_status))));
2097 case CPL_ERR_CONN_EXIST:
2098 if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) {
2099 set_bit(ACT_RETRY_INUSE, &ep->com.history);
2100 if (ep->com.remote_addr.ss_family == AF_INET6) {
2101 struct sockaddr_in6 *sin6 =
2102 (struct sockaddr_in6 *)
2103 &ep->com.local_addr;
2105 ep->com.dev->rdev.lldi.ports[0],
2107 &sin6->sin6_addr.s6_addr, 1);
2109 remove_handle(ep->com.dev, &ep->com.dev->atid_idr,
2111 cxgb4_free_atid(t, atid);
2112 dst_release(ep->dst);
2113 cxgb4_l2t_release(ep->l2t);
2119 if (ep->com.local_addr.ss_family == AF_INET) {
2120 pr_info("Active open failure - atid %u status %u errno %d %pI4:%u->%pI4:%u\n",
2121 atid, status, status2errno(status),
2122 &la->sin_addr.s_addr, ntohs(la->sin_port),
2123 &ra->sin_addr.s_addr, ntohs(ra->sin_port));
2125 pr_info("Active open failure - atid %u status %u errno %d %pI6:%u->%pI6:%u\n",
2126 atid, status, status2errno(status),
2127 la6->sin6_addr.s6_addr, ntohs(la6->sin6_port),
2128 ra6->sin6_addr.s6_addr, ntohs(ra6->sin6_port));
2133 connect_reply_upcall(ep, status2errno(status));
2134 state_set(&ep->com, DEAD);
2136 if (ep->com.remote_addr.ss_family == AF_INET6) {
2137 struct sockaddr_in6 *sin6 =
2138 (struct sockaddr_in6 *)&ep->com.local_addr;
2139 cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
2140 (const u32 *)&sin6->sin6_addr.s6_addr, 1);
2142 if (status && act_open_has_tid(status))
2143 cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, GET_TID(rpl));
2145 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, atid);
2146 cxgb4_free_atid(t, atid);
2147 dst_release(ep->dst);
2148 cxgb4_l2t_release(ep->l2t);
2149 c4iw_put_ep(&ep->com);
2154 static int pass_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
2156 struct cpl_pass_open_rpl *rpl = cplhdr(skb);
2157 struct tid_info *t = dev->rdev.lldi.tids;
2158 unsigned int stid = GET_TID(rpl);
2159 struct c4iw_listen_ep *ep = lookup_stid(t, stid);
2162 PDBG("%s stid %d lookup failure!\n", __func__, stid);
2165 PDBG("%s ep %p status %d error %d\n", __func__, ep,
2166 rpl->status, status2errno(rpl->status));
2167 c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status));
2173 static int close_listsrv_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
2175 struct cpl_close_listsvr_rpl *rpl = cplhdr(skb);
2176 struct tid_info *t = dev->rdev.lldi.tids;
2177 unsigned int stid = GET_TID(rpl);
2178 struct c4iw_listen_ep *ep = lookup_stid(t, stid);
2180 PDBG("%s ep %p\n", __func__, ep);
2181 c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status));
2185 static void accept_cr(struct c4iw_ep *ep, struct sk_buff *skb,
2186 struct cpl_pass_accept_req *req)
2188 struct cpl_pass_accept_rpl *rpl;
2189 unsigned int mtu_idx;
2193 struct cpl_t5_pass_accept_rpl *rpl5 = NULL;
2195 enum chip_type adapter_type = ep->com.dev->rdev.lldi.adapter_type;
2197 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
2198 BUG_ON(skb_cloned(skb));
2202 if (!is_t4(adapter_type)) {
2203 skb_trim(skb, roundup(sizeof(*rpl5), 16));
2205 INIT_TP_WR(rpl5, ep->hwtid);
2207 skb_trim(skb, sizeof(*rpl));
2208 INIT_TP_WR(rpl, ep->hwtid);
2210 OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL,
2213 best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx,
2214 enable_tcp_timestamps && req->tcpopt.tstamp,
2215 (AF_INET == ep->com.remote_addr.ss_family) ? 0 : 1);
2216 wscale = compute_wscale(rcv_win);
2219 * Specify the largest window that will fit in opt0. The
2220 * remainder will be specified in the rx_data_ack.
2222 win = ep->rcv_win >> 10;
2223 if (win > RCV_BUFSIZ_M)
2225 opt0 = (nocong ? NO_CONG_F : 0) |
2228 WND_SCALE_V(wscale) |
2229 MSS_IDX_V(mtu_idx) |
2230 L2T_IDX_V(ep->l2t->idx) |
2231 TX_CHAN_V(ep->tx_chan) |
2232 SMAC_SEL_V(ep->smac_idx) |
2233 DSCP_V(ep->tos >> 2) |
2234 ULP_MODE_V(ULP_MODE_TCPDDP) |
2236 opt2 = RX_CHANNEL_V(0) |
2237 RSS_QUEUE_VALID_F | RSS_QUEUE_V(ep->rss_qid);
2239 if (enable_tcp_timestamps && req->tcpopt.tstamp)
2240 opt2 |= TSTAMPS_EN_F;
2241 if (enable_tcp_sack && req->tcpopt.sack)
2243 if (wscale && enable_tcp_window_scaling)
2244 opt2 |= WND_SCALE_EN_F;
2246 const struct tcphdr *tcph;
2247 u32 hlen = ntohl(req->hdr_len);
2249 if (CHELSIO_CHIP_VERSION(adapter_type) <= CHELSIO_T5)
2250 tcph = (const void *)(req + 1) + ETH_HDR_LEN_G(hlen) +
2253 tcph = (const void *)(req + 1) +
2254 T6_ETH_HDR_LEN_G(hlen) + T6_IP_HDR_LEN_G(hlen);
2255 if (tcph->ece && tcph->cwr)
2256 opt2 |= CCTRL_ECN_V(1);
2258 if (CHELSIO_CHIP_VERSION(adapter_type) > CHELSIO_T4) {
2259 u32 isn = (prandom_u32() & ~7UL) - 1;
2260 opt2 |= T5_OPT_2_VALID_F;
2261 opt2 |= CONG_CNTRL_V(CONG_ALG_TAHOE);
2264 memset(&rpl5->iss, 0, roundup(sizeof(*rpl5)-sizeof(*rpl), 16));
2267 rpl5->iss = cpu_to_be32(isn);
2268 PDBG("%s iss %u\n", __func__, be32_to_cpu(rpl5->iss));
2271 rpl->opt0 = cpu_to_be64(opt0);
2272 rpl->opt2 = cpu_to_be32(opt2);
2273 set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx);
2274 t4_set_arp_err_handler(skb, NULL, arp_failure_discard);
2275 c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
2280 static void reject_cr(struct c4iw_dev *dev, u32 hwtid, struct sk_buff *skb)
2282 PDBG("%s c4iw_dev %p tid %u\n", __func__, dev, hwtid);
2283 BUG_ON(skb_cloned(skb));
2284 skb_trim(skb, sizeof(struct cpl_tid_release));
2285 release_tid(&dev->rdev, hwtid, skb);
2289 static void get_4tuple(struct cpl_pass_accept_req *req, enum chip_type type,
2290 int *iptype, __u8 *local_ip, __u8 *peer_ip,
2291 __be16 *local_port, __be16 *peer_port)
2293 int eth_len = (CHELSIO_CHIP_VERSION(type) <= CHELSIO_T5) ?
2294 ETH_HDR_LEN_G(be32_to_cpu(req->hdr_len)) :
2295 T6_ETH_HDR_LEN_G(be32_to_cpu(req->hdr_len));
2296 int ip_len = (CHELSIO_CHIP_VERSION(type) <= CHELSIO_T5) ?
2297 IP_HDR_LEN_G(be32_to_cpu(req->hdr_len)) :
2298 T6_IP_HDR_LEN_G(be32_to_cpu(req->hdr_len));
2299 struct iphdr *ip = (struct iphdr *)((u8 *)(req + 1) + eth_len);
2300 struct ipv6hdr *ip6 = (struct ipv6hdr *)((u8 *)(req + 1) + eth_len);
2301 struct tcphdr *tcp = (struct tcphdr *)
2302 ((u8 *)(req + 1) + eth_len + ip_len);
2304 if (ip->version == 4) {
2305 PDBG("%s saddr 0x%x daddr 0x%x sport %u dport %u\n", __func__,
2306 ntohl(ip->saddr), ntohl(ip->daddr), ntohs(tcp->source),
2309 memcpy(peer_ip, &ip->saddr, 4);
2310 memcpy(local_ip, &ip->daddr, 4);
2312 PDBG("%s saddr %pI6 daddr %pI6 sport %u dport %u\n", __func__,
2313 ip6->saddr.s6_addr, ip6->daddr.s6_addr, ntohs(tcp->source),
2316 memcpy(peer_ip, ip6->saddr.s6_addr, 16);
2317 memcpy(local_ip, ip6->daddr.s6_addr, 16);
2319 *peer_port = tcp->source;
2320 *local_port = tcp->dest;
2325 static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
2327 struct c4iw_ep *child_ep = NULL, *parent_ep;
2328 struct cpl_pass_accept_req *req = cplhdr(skb);
2329 unsigned int stid = PASS_OPEN_TID_G(ntohl(req->tos_stid));
2330 struct tid_info *t = dev->rdev.lldi.tids;
2331 unsigned int hwtid = GET_TID(req);
2332 struct dst_entry *dst;
2333 __u8 local_ip[16], peer_ip[16];
2334 __be16 local_port, peer_port;
2335 struct sockaddr_in6 *sin6;
2337 u16 peer_mss = ntohs(req->tcpopt.mss);
2339 unsigned short hdrs;
2341 parent_ep = lookup_stid(t, stid);
2343 PDBG("%s connect request on invalid stid %d\n", __func__, stid);
2347 if (state_read(&parent_ep->com) != LISTEN) {
2348 printk(KERN_ERR "%s - listening ep not in LISTEN\n",
2353 get_4tuple(req, parent_ep->com.dev->rdev.lldi.adapter_type, &iptype,
2354 local_ip, peer_ip, &local_port, &peer_port);
2356 /* Find output route */
2358 PDBG("%s parent ep %p hwtid %u laddr %pI4 raddr %pI4 lport %d rport %d peer_mss %d\n"
2359 , __func__, parent_ep, hwtid,
2360 local_ip, peer_ip, ntohs(local_port),
2361 ntohs(peer_port), peer_mss);
2362 dst = find_route(dev, *(__be32 *)local_ip, *(__be32 *)peer_ip,
2363 local_port, peer_port,
2364 PASS_OPEN_TOS_G(ntohl(req->tos_stid)));
2366 PDBG("%s parent ep %p hwtid %u laddr %pI6 raddr %pI6 lport %d rport %d peer_mss %d\n"
2367 , __func__, parent_ep, hwtid,
2368 local_ip, peer_ip, ntohs(local_port),
2369 ntohs(peer_port), peer_mss);
2370 dst = find_route6(dev, local_ip, peer_ip, local_port, peer_port,
2371 PASS_OPEN_TOS_G(ntohl(req->tos_stid)),
2372 ((struct sockaddr_in6 *)
2373 &parent_ep->com.local_addr)->sin6_scope_id);
2376 printk(KERN_ERR MOD "%s - failed to find dst entry!\n",
2381 child_ep = alloc_ep(sizeof(*child_ep), GFP_KERNEL);
2383 printk(KERN_ERR MOD "%s - failed to allocate ep entry!\n",
2389 err = import_ep(child_ep, iptype, peer_ip, dst, dev, false,
2390 parent_ep->com.dev->rdev.lldi.adapter_type);
2392 printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n",
2399 hdrs = sizeof(struct iphdr) + sizeof(struct tcphdr) +
2400 ((enable_tcp_timestamps && req->tcpopt.tstamp) ? 12 : 0);
2401 if (peer_mss && child_ep->mtu > (peer_mss + hdrs))
2402 child_ep->mtu = peer_mss + hdrs;
2404 state_set(&child_ep->com, CONNECTING);
2405 child_ep->com.dev = dev;
2406 child_ep->com.cm_id = NULL;
2409 struct sockaddr_in *sin = (struct sockaddr_in *)
2410 &child_ep->com.local_addr;
2412 sin->sin_family = PF_INET;
2413 sin->sin_port = local_port;
2414 sin->sin_addr.s_addr = *(__be32 *)local_ip;
2416 sin = (struct sockaddr_in *)&child_ep->com.local_addr;
2417 sin->sin_family = PF_INET;
2418 sin->sin_port = ((struct sockaddr_in *)
2419 &parent_ep->com.local_addr)->sin_port;
2420 sin->sin_addr.s_addr = *(__be32 *)local_ip;
2422 sin = (struct sockaddr_in *)&child_ep->com.remote_addr;
2423 sin->sin_family = PF_INET;
2424 sin->sin_port = peer_port;
2425 sin->sin_addr.s_addr = *(__be32 *)peer_ip;
2427 sin6 = (struct sockaddr_in6 *)&child_ep->com.local_addr;
2428 sin6->sin6_family = PF_INET6;
2429 sin6->sin6_port = local_port;
2430 memcpy(sin6->sin6_addr.s6_addr, local_ip, 16);
2432 sin6 = (struct sockaddr_in6 *)&child_ep->com.local_addr;
2433 sin6->sin6_family = PF_INET6;
2434 sin6->sin6_port = ((struct sockaddr_in6 *)
2435 &parent_ep->com.local_addr)->sin6_port;
2436 memcpy(sin6->sin6_addr.s6_addr, local_ip, 16);
2438 sin6 = (struct sockaddr_in6 *)&child_ep->com.remote_addr;
2439 sin6->sin6_family = PF_INET6;
2440 sin6->sin6_port = peer_port;
2441 memcpy(sin6->sin6_addr.s6_addr, peer_ip, 16);
2444 c4iw_get_ep(&parent_ep->com);
2445 child_ep->parent_ep = parent_ep;
2446 child_ep->tos = PASS_OPEN_TOS_G(ntohl(req->tos_stid));
2447 child_ep->dst = dst;
2448 child_ep->hwtid = hwtid;
2450 PDBG("%s tx_chan %u smac_idx %u rss_qid %u\n", __func__,
2451 child_ep->tx_chan, child_ep->smac_idx, child_ep->rss_qid);
2453 init_timer(&child_ep->timer);
2454 cxgb4_insert_tid(t, child_ep, hwtid);
2455 insert_handle(dev, &dev->hwtid_idr, child_ep, child_ep->hwtid);
2456 accept_cr(child_ep, skb, req);
2457 set_bit(PASS_ACCEPT_REQ, &child_ep->com.history);
2459 sin6 = (struct sockaddr_in6 *)&child_ep->com.local_addr;
2460 cxgb4_clip_get(child_ep->com.dev->rdev.lldi.ports[0],
2461 (const u32 *)&sin6->sin6_addr.s6_addr, 1);
2465 reject_cr(dev, hwtid, skb);
2470 static int pass_establish(struct c4iw_dev *dev, struct sk_buff *skb)
2473 struct cpl_pass_establish *req = cplhdr(skb);
2474 struct tid_info *t = dev->rdev.lldi.tids;
2475 unsigned int tid = GET_TID(req);
2477 ep = lookup_tid(t, tid);
2478 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
2479 ep->snd_seq = be32_to_cpu(req->snd_isn);
2480 ep->rcv_seq = be32_to_cpu(req->rcv_isn);
2482 PDBG("%s ep %p hwtid %u tcp_opt 0x%02x\n", __func__, ep, tid,
2483 ntohs(req->tcp_opt));
2485 set_emss(ep, ntohs(req->tcp_opt));
2487 dst_confirm(ep->dst);
2488 state_set(&ep->com, MPA_REQ_WAIT);
2490 send_flowc(ep, skb);
2491 set_bit(PASS_ESTAB, &ep->com.history);
2496 static int peer_close(struct c4iw_dev *dev, struct sk_buff *skb)
2498 struct cpl_peer_close *hdr = cplhdr(skb);
2500 struct c4iw_qp_attributes attrs;
2503 struct tid_info *t = dev->rdev.lldi.tids;
2504 unsigned int tid = GET_TID(hdr);
2507 ep = lookup_tid(t, tid);
2508 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
2509 dst_confirm(ep->dst);
2511 set_bit(PEER_CLOSE, &ep->com.history);
2512 mutex_lock(&ep->com.mutex);
2513 switch (ep->com.state) {
2515 __state_set(&ep->com, CLOSING);
2518 __state_set(&ep->com, CLOSING);
2519 connect_reply_upcall(ep, -ECONNRESET);
2524 * We're gonna mark this puppy DEAD, but keep
2525 * the reference on it until the ULP accepts or
2526 * rejects the CR. Also wake up anyone waiting
2527 * in rdma connection migration (see c4iw_accept_cr()).
2529 __state_set(&ep->com, CLOSING);
2530 PDBG("waking up ep %p tid %u\n", ep, ep->hwtid);
2531 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
2534 __state_set(&ep->com, CLOSING);
2535 PDBG("waking up ep %p tid %u\n", ep, ep->hwtid);
2536 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
2540 __state_set(&ep->com, CLOSING);
2541 attrs.next_state = C4IW_QP_STATE_CLOSING;
2542 ret = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
2543 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
2544 if (ret != -ECONNRESET) {
2545 peer_close_upcall(ep);
2553 __state_set(&ep->com, MORIBUND);
2557 (void)stop_ep_timer(ep);
2558 if (ep->com.cm_id && ep->com.qp) {
2559 attrs.next_state = C4IW_QP_STATE_IDLE;
2560 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
2561 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
2563 close_complete_upcall(ep, 0);
2564 __state_set(&ep->com, DEAD);
2574 mutex_unlock(&ep->com.mutex);
2576 c4iw_ep_disconnect(ep, 0, GFP_KERNEL);
2578 release_ep_resources(ep);
2582 static int peer_abort(struct c4iw_dev *dev, struct sk_buff *skb)
2584 struct cpl_abort_req_rss *req = cplhdr(skb);
2586 struct cpl_abort_rpl *rpl;
2587 struct sk_buff *rpl_skb;
2588 struct c4iw_qp_attributes attrs;
2591 struct tid_info *t = dev->rdev.lldi.tids;
2592 unsigned int tid = GET_TID(req);
2594 ep = lookup_tid(t, tid);
2595 if (is_neg_adv(req->status)) {
2596 PDBG("%s Negative advice on abort- tid %u status %d (%s)\n",
2597 __func__, ep->hwtid, req->status,
2598 neg_adv_str(req->status));
2599 ep->stats.abort_neg_adv++;
2600 mutex_lock(&dev->rdev.stats.lock);
2601 dev->rdev.stats.neg_adv++;
2602 mutex_unlock(&dev->rdev.stats.lock);
2605 PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid,
2607 set_bit(PEER_ABORT, &ep->com.history);
2610 * Wake up any threads in rdma_init() or rdma_fini().
2611 * However, this is not needed if com state is just
2614 if (ep->com.state != MPA_REQ_SENT)
2615 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
2617 mutex_lock(&ep->com.mutex);
2618 switch (ep->com.state) {
2622 (void)stop_ep_timer(ep);
2625 (void)stop_ep_timer(ep);
2626 if (mpa_rev == 1 || (mpa_rev == 2 && ep->tried_with_mpa_v1))
2627 connect_reply_upcall(ep, -ECONNRESET);
2630 * we just don't send notification upwards because we
2631 * want to retry with mpa_v1 without upper layers even
2634 * do some housekeeping so as to re-initiate the
2637 PDBG("%s: mpa_rev=%d. Retrying with mpav1\n", __func__,
2639 ep->retry_with_mpa_v1 = 1;
2651 if (ep->com.cm_id && ep->com.qp) {
2652 attrs.next_state = C4IW_QP_STATE_ERROR;
2653 ret = c4iw_modify_qp(ep->com.qp->rhp,
2654 ep->com.qp, C4IW_QP_ATTR_NEXT_STATE,
2658 "%s - qp <- error failed!\n",
2661 peer_abort_upcall(ep);
2666 PDBG("%s PEER_ABORT IN DEAD STATE!!!!\n", __func__);
2667 mutex_unlock(&ep->com.mutex);
2673 dst_confirm(ep->dst);
2674 if (ep->com.state != ABORTING) {
2675 __state_set(&ep->com, DEAD);
2676 /* we don't release if we want to retry with mpa_v1 */
2677 if (!ep->retry_with_mpa_v1)
2680 mutex_unlock(&ep->com.mutex);
2682 rpl_skb = get_skb(skb, sizeof(*rpl), GFP_KERNEL);
2684 printk(KERN_ERR MOD "%s - cannot allocate skb!\n",
2689 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
2690 rpl = (struct cpl_abort_rpl *) skb_put(rpl_skb, sizeof(*rpl));
2691 INIT_TP_WR(rpl, ep->hwtid);
2692 OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_RPL, ep->hwtid));
2693 rpl->cmd = CPL_ABORT_NO_RST;
2694 c4iw_ofld_send(&ep->com.dev->rdev, rpl_skb);
2697 release_ep_resources(ep);
2698 else if (ep->retry_with_mpa_v1) {
2699 if (ep->com.remote_addr.ss_family == AF_INET6) {
2700 struct sockaddr_in6 *sin6 =
2701 (struct sockaddr_in6 *)
2702 &ep->com.local_addr;
2704 ep->com.dev->rdev.lldi.ports[0],
2705 (const u32 *)&sin6->sin6_addr.s6_addr,
2708 remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid);
2709 cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid);
2710 dst_release(ep->dst);
2711 cxgb4_l2t_release(ep->l2t);
2718 static int close_con_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
2721 struct c4iw_qp_attributes attrs;
2722 struct cpl_close_con_rpl *rpl = cplhdr(skb);
2724 struct tid_info *t = dev->rdev.lldi.tids;
2725 unsigned int tid = GET_TID(rpl);
2727 ep = lookup_tid(t, tid);
2729 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
2732 /* The cm_id may be null if we failed to connect */
2733 mutex_lock(&ep->com.mutex);
2734 switch (ep->com.state) {
2736 __state_set(&ep->com, MORIBUND);
2739 (void)stop_ep_timer(ep);
2740 if ((ep->com.cm_id) && (ep->com.qp)) {
2741 attrs.next_state = C4IW_QP_STATE_IDLE;
2742 c4iw_modify_qp(ep->com.qp->rhp,
2744 C4IW_QP_ATTR_NEXT_STATE,
2747 close_complete_upcall(ep, 0);
2748 __state_set(&ep->com, DEAD);
2758 mutex_unlock(&ep->com.mutex);
2760 release_ep_resources(ep);
2764 static int terminate(struct c4iw_dev *dev, struct sk_buff *skb)
2766 struct cpl_rdma_terminate *rpl = cplhdr(skb);
2767 struct tid_info *t = dev->rdev.lldi.tids;
2768 unsigned int tid = GET_TID(rpl);
2770 struct c4iw_qp_attributes attrs;
2772 ep = lookup_tid(t, tid);
2775 if (ep && ep->com.qp) {
2776 printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", tid,
2777 ep->com.qp->wq.sq.qid);
2778 attrs.next_state = C4IW_QP_STATE_TERMINATE;
2779 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
2780 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
2782 printk(KERN_WARNING MOD "TERM received tid %u no ep/qp\n", tid);
2788 * Upcall from the adapter indicating data has been transmitted.
2789 * For us its just the single MPA request or reply. We can now free
2790 * the skb holding the mpa message.
2792 static int fw4_ack(struct c4iw_dev *dev, struct sk_buff *skb)
2795 struct cpl_fw4_ack *hdr = cplhdr(skb);
2796 u8 credits = hdr->credits;
2797 unsigned int tid = GET_TID(hdr);
2798 struct tid_info *t = dev->rdev.lldi.tids;
2801 ep = lookup_tid(t, tid);
2802 PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits);
2804 PDBG("%s 0 credit ack ep %p tid %u state %u\n",
2805 __func__, ep, ep->hwtid, state_read(&ep->com));
2809 dst_confirm(ep->dst);
2811 PDBG("%s last streaming msg ack ep %p tid %u state %u "
2812 "initiator %u freeing skb\n", __func__, ep, ep->hwtid,
2813 state_read(&ep->com), ep->mpa_attr.initiator ? 1 : 0);
2814 kfree_skb(ep->mpa_skb);
2820 int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
2824 struct c4iw_ep *ep = to_ep(cm_id);
2825 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
2827 mutex_lock(&ep->com.mutex);
2828 if (ep->com.state == DEAD) {
2829 mutex_unlock(&ep->com.mutex);
2830 c4iw_put_ep(&ep->com);
2833 set_bit(ULP_REJECT, &ep->com.history);
2834 BUG_ON(ep->com.state != MPA_REQ_RCVD);
2836 abort_connection(ep, NULL, GFP_KERNEL);
2838 err = send_mpa_reject(ep, pdata, pdata_len);
2841 mutex_unlock(&ep->com.mutex);
2843 err = c4iw_ep_disconnect(ep, 0, GFP_KERNEL);
2844 c4iw_put_ep(&ep->com);
2848 int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
2851 struct c4iw_qp_attributes attrs;
2852 enum c4iw_qp_attr_mask mask;
2853 struct c4iw_ep *ep = to_ep(cm_id);
2854 struct c4iw_dev *h = to_c4iw_dev(cm_id->device);
2855 struct c4iw_qp *qp = get_qhp(h, conn_param->qpn);
2857 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
2859 mutex_lock(&ep->com.mutex);
2860 if (ep->com.state == DEAD) {
2865 BUG_ON(ep->com.state != MPA_REQ_RCVD);
2868 set_bit(ULP_ACCEPT, &ep->com.history);
2869 if ((conn_param->ord > cur_max_read_depth(ep->com.dev)) ||
2870 (conn_param->ird > cur_max_read_depth(ep->com.dev))) {
2871 abort_connection(ep, NULL, GFP_KERNEL);
2876 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
2877 if (conn_param->ord > ep->ird) {
2878 if (RELAXED_IRD_NEGOTIATION) {
2881 ep->ird = conn_param->ird;
2882 ep->ord = conn_param->ord;
2883 send_mpa_reject(ep, conn_param->private_data,
2884 conn_param->private_data_len);
2885 abort_connection(ep, NULL, GFP_KERNEL);
2890 if (conn_param->ird < ep->ord) {
2891 if (RELAXED_IRD_NEGOTIATION &&
2892 ep->ord <= h->rdev.lldi.max_ordird_qp) {
2893 conn_param->ird = ep->ord;
2895 abort_connection(ep, NULL, GFP_KERNEL);
2901 ep->ird = conn_param->ird;
2902 ep->ord = conn_param->ord;
2904 if (ep->mpa_attr.version == 1) {
2905 if (peer2peer && ep->ird == 0)
2909 (ep->mpa_attr.p2p_type != FW_RI_INIT_P2PTYPE_DISABLED) &&
2910 (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) && ep->ird == 0)
2914 PDBG("%s %d ird %d ord %d\n", __func__, __LINE__, ep->ird, ep->ord);
2916 cm_id->add_ref(cm_id);
2917 ep->com.cm_id = cm_id;
2921 /* bind QP to EP and move to RTS */
2922 attrs.mpa_attr = ep->mpa_attr;
2923 attrs.max_ird = ep->ird;
2924 attrs.max_ord = ep->ord;
2925 attrs.llp_stream_handle = ep;
2926 attrs.next_state = C4IW_QP_STATE_RTS;
2928 /* bind QP and TID with INIT_WR */
2929 mask = C4IW_QP_ATTR_NEXT_STATE |
2930 C4IW_QP_ATTR_LLP_STREAM_HANDLE |
2931 C4IW_QP_ATTR_MPA_ATTR |
2932 C4IW_QP_ATTR_MAX_IRD |
2933 C4IW_QP_ATTR_MAX_ORD;
2935 err = c4iw_modify_qp(ep->com.qp->rhp,
2936 ep->com.qp, mask, &attrs, 1);
2939 err = send_mpa_reply(ep, conn_param->private_data,
2940 conn_param->private_data_len);
2944 __state_set(&ep->com, FPDU_MODE);
2945 established_upcall(ep);
2946 mutex_unlock(&ep->com.mutex);
2947 c4iw_put_ep(&ep->com);
2950 ep->com.cm_id = NULL;
2951 abort_connection(ep, NULL, GFP_KERNEL);
2952 cm_id->rem_ref(cm_id);
2954 mutex_unlock(&ep->com.mutex);
2955 c4iw_put_ep(&ep->com);
2959 static int pick_local_ipaddrs(struct c4iw_dev *dev, struct iw_cm_id *cm_id)
2961 struct in_device *ind;
2963 struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->m_local_addr;
2964 struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->m_remote_addr;
2966 ind = in_dev_get(dev->rdev.lldi.ports[0]);
2968 return -EADDRNOTAVAIL;
2969 for_primary_ifa(ind) {
2970 laddr->sin_addr.s_addr = ifa->ifa_address;
2971 raddr->sin_addr.s_addr = ifa->ifa_address;
2977 return found ? 0 : -EADDRNOTAVAIL;
2980 static int get_lladdr(struct net_device *dev, struct in6_addr *addr,
2981 unsigned char banned_flags)
2983 struct inet6_dev *idev;
2984 int err = -EADDRNOTAVAIL;
2987 idev = __in6_dev_get(dev);
2989 struct inet6_ifaddr *ifp;
2991 read_lock_bh(&idev->lock);
2992 list_for_each_entry(ifp, &idev->addr_list, if_list) {
2993 if (ifp->scope == IFA_LINK &&
2994 !(ifp->flags & banned_flags)) {
2995 memcpy(addr, &ifp->addr, 16);
3000 read_unlock_bh(&idev->lock);
3006 static int pick_local_ip6addrs(struct c4iw_dev *dev, struct iw_cm_id *cm_id)
3008 struct in6_addr uninitialized_var(addr);
3009 struct sockaddr_in6 *la6 = (struct sockaddr_in6 *)&cm_id->m_local_addr;
3010 struct sockaddr_in6 *ra6 = (struct sockaddr_in6 *)&cm_id->m_remote_addr;
3012 if (!get_lladdr(dev->rdev.lldi.ports[0], &addr, IFA_F_TENTATIVE)) {
3013 memcpy(la6->sin6_addr.s6_addr, &addr, 16);
3014 memcpy(ra6->sin6_addr.s6_addr, &addr, 16);
3017 return -EADDRNOTAVAIL;
3020 int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
3022 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device);
3025 struct sockaddr_in *laddr;
3026 struct sockaddr_in *raddr;
3027 struct sockaddr_in6 *laddr6;
3028 struct sockaddr_in6 *raddr6;
3032 if ((conn_param->ord > cur_max_read_depth(dev)) ||
3033 (conn_param->ird > cur_max_read_depth(dev))) {
3037 ep = alloc_ep(sizeof(*ep), GFP_KERNEL);
3039 printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__);
3043 init_timer(&ep->timer);
3044 ep->plen = conn_param->private_data_len;
3046 memcpy(ep->mpa_pkt + sizeof(struct mpa_message),
3047 conn_param->private_data, ep->plen);
3048 ep->ird = conn_param->ird;
3049 ep->ord = conn_param->ord;
3051 if (peer2peer && ep->ord == 0)
3054 cm_id->add_ref(cm_id);
3056 ep->com.cm_id = cm_id;
3057 ep->com.qp = get_qhp(dev, conn_param->qpn);
3059 PDBG("%s qpn 0x%x not found!\n", __func__, conn_param->qpn);
3064 PDBG("%s qpn 0x%x qp %p cm_id %p\n", __func__, conn_param->qpn,
3068 * Allocate an active TID to initiate a TCP connection.
3070 ep->atid = cxgb4_alloc_atid(dev->rdev.lldi.tids, ep);
3071 if (ep->atid == -1) {
3072 printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __func__);
3076 insert_handle(dev, &dev->atid_idr, ep, ep->atid);
3078 memcpy(&ep->com.local_addr, &cm_id->m_local_addr,
3079 sizeof(ep->com.local_addr));
3080 memcpy(&ep->com.remote_addr, &cm_id->m_remote_addr,
3081 sizeof(ep->com.remote_addr));
3083 laddr = (struct sockaddr_in *)&ep->com.local_addr;
3084 raddr = (struct sockaddr_in *)&ep->com.remote_addr;
3085 laddr6 = (struct sockaddr_in6 *)&ep->com.local_addr;
3086 raddr6 = (struct sockaddr_in6 *) &ep->com.remote_addr;
3088 if (cm_id->m_remote_addr.ss_family == AF_INET) {
3090 ra = (__u8 *)&raddr->sin_addr;
3093 * Handle loopback requests to INADDR_ANY.
3095 if ((__force int)raddr->sin_addr.s_addr == INADDR_ANY) {
3096 err = pick_local_ipaddrs(dev, cm_id);
3102 PDBG("%s saddr %pI4 sport 0x%x raddr %pI4 rport 0x%x\n",
3103 __func__, &laddr->sin_addr, ntohs(laddr->sin_port),
3104 ra, ntohs(raddr->sin_port));
3105 ep->dst = find_route(dev, laddr->sin_addr.s_addr,
3106 raddr->sin_addr.s_addr, laddr->sin_port,
3107 raddr->sin_port, 0);
3110 ra = (__u8 *)&raddr6->sin6_addr;
3113 * Handle loopback requests to INADDR_ANY.
3115 if (ipv6_addr_type(&raddr6->sin6_addr) == IPV6_ADDR_ANY) {
3116 err = pick_local_ip6addrs(dev, cm_id);
3122 PDBG("%s saddr %pI6 sport 0x%x raddr %pI6 rport 0x%x\n",
3123 __func__, laddr6->sin6_addr.s6_addr,
3124 ntohs(laddr6->sin6_port),
3125 raddr6->sin6_addr.s6_addr, ntohs(raddr6->sin6_port));
3126 ep->dst = find_route6(dev, laddr6->sin6_addr.s6_addr,
3127 raddr6->sin6_addr.s6_addr,
3128 laddr6->sin6_port, raddr6->sin6_port, 0,
3129 raddr6->sin6_scope_id);
3132 printk(KERN_ERR MOD "%s - cannot find route.\n", __func__);
3133 err = -EHOSTUNREACH;
3137 err = import_ep(ep, iptype, ra, ep->dst, ep->com.dev, true,
3138 ep->com.dev->rdev.lldi.adapter_type);
3140 printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__);
3144 PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n",
3145 __func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid,
3148 state_set(&ep->com, CONNECTING);
3151 /* send connect request to rnic */
3152 err = send_connect(ep);
3156 cxgb4_l2t_release(ep->l2t);
3158 dst_release(ep->dst);
3160 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid);
3161 cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid);
3163 cm_id->rem_ref(cm_id);
3164 c4iw_put_ep(&ep->com);
3169 static int create_server6(struct c4iw_dev *dev, struct c4iw_listen_ep *ep)
3172 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)
3173 &ep->com.local_addr;
3175 if (ipv6_addr_type(&sin6->sin6_addr) != IPV6_ADDR_ANY) {
3176 err = cxgb4_clip_get(ep->com.dev->rdev.lldi.ports[0],
3177 (const u32 *)&sin6->sin6_addr.s6_addr, 1);
3181 c4iw_init_wr_wait(&ep->com.wr_wait);
3182 err = cxgb4_create_server6(ep->com.dev->rdev.lldi.ports[0],
3183 ep->stid, &sin6->sin6_addr,
3185 ep->com.dev->rdev.lldi.rxq_ids[0]);
3187 err = c4iw_wait_for_reply(&ep->com.dev->rdev,
3191 err = net_xmit_errno(err);
3193 cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
3194 (const u32 *)&sin6->sin6_addr.s6_addr, 1);
3195 pr_err("cxgb4_create_server6/filter failed err %d stid %d laddr %pI6 lport %d\n",
3197 sin6->sin6_addr.s6_addr, ntohs(sin6->sin6_port));
3202 static int create_server4(struct c4iw_dev *dev, struct c4iw_listen_ep *ep)
3205 struct sockaddr_in *sin = (struct sockaddr_in *)
3206 &ep->com.local_addr;
3208 if (dev->rdev.lldi.enable_fw_ofld_conn) {
3210 err = cxgb4_create_server_filter(
3211 ep->com.dev->rdev.lldi.ports[0], ep->stid,
3212 sin->sin_addr.s_addr, sin->sin_port, 0,
3213 ep->com.dev->rdev.lldi.rxq_ids[0], 0, 0);
3214 if (err == -EBUSY) {
3215 if (c4iw_fatal_error(&ep->com.dev->rdev)) {
3219 set_current_state(TASK_UNINTERRUPTIBLE);
3220 schedule_timeout(usecs_to_jiffies(100));
3222 } while (err == -EBUSY);
3224 c4iw_init_wr_wait(&ep->com.wr_wait);
3225 err = cxgb4_create_server(ep->com.dev->rdev.lldi.ports[0],
3226 ep->stid, sin->sin_addr.s_addr, sin->sin_port,
3227 0, ep->com.dev->rdev.lldi.rxq_ids[0]);
3229 err = c4iw_wait_for_reply(&ep->com.dev->rdev,
3233 err = net_xmit_errno(err);
3236 pr_err("cxgb4_create_server/filter failed err %d stid %d laddr %pI4 lport %d\n"
3238 &sin->sin_addr, ntohs(sin->sin_port));
3242 int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog)
3245 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device);
3246 struct c4iw_listen_ep *ep;
3250 ep = alloc_ep(sizeof(*ep), GFP_KERNEL);
3252 printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__);
3256 PDBG("%s ep %p\n", __func__, ep);
3257 cm_id->add_ref(cm_id);
3258 ep->com.cm_id = cm_id;
3260 ep->backlog = backlog;
3261 memcpy(&ep->com.local_addr, &cm_id->m_local_addr,
3262 sizeof(ep->com.local_addr));
3265 * Allocate a server TID.
3267 if (dev->rdev.lldi.enable_fw_ofld_conn &&
3268 ep->com.local_addr.ss_family == AF_INET)
3269 ep->stid = cxgb4_alloc_sftid(dev->rdev.lldi.tids,
3270 cm_id->m_local_addr.ss_family, ep);
3272 ep->stid = cxgb4_alloc_stid(dev->rdev.lldi.tids,
3273 cm_id->m_local_addr.ss_family, ep);
3275 if (ep->stid == -1) {
3276 printk(KERN_ERR MOD "%s - cannot alloc stid.\n", __func__);
3280 insert_handle(dev, &dev->stid_idr, ep, ep->stid);
3282 memcpy(&ep->com.local_addr, &cm_id->m_local_addr,
3283 sizeof(ep->com.local_addr));
3285 state_set(&ep->com, LISTEN);
3286 if (ep->com.local_addr.ss_family == AF_INET)
3287 err = create_server4(dev, ep);
3289 err = create_server6(dev, ep);
3291 cm_id->provider_data = ep;
3295 cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid,
3296 ep->com.local_addr.ss_family);
3298 cm_id->rem_ref(cm_id);
3299 c4iw_put_ep(&ep->com);
3305 int c4iw_destroy_listen(struct iw_cm_id *cm_id)
3308 struct c4iw_listen_ep *ep = to_listen_ep(cm_id);
3310 PDBG("%s ep %p\n", __func__, ep);
3313 state_set(&ep->com, DEAD);
3314 if (ep->com.dev->rdev.lldi.enable_fw_ofld_conn &&
3315 ep->com.local_addr.ss_family == AF_INET) {
3316 err = cxgb4_remove_server_filter(
3317 ep->com.dev->rdev.lldi.ports[0], ep->stid,
3318 ep->com.dev->rdev.lldi.rxq_ids[0], 0);
3320 struct sockaddr_in6 *sin6;
3321 c4iw_init_wr_wait(&ep->com.wr_wait);
3322 err = cxgb4_remove_server(
3323 ep->com.dev->rdev.lldi.ports[0], ep->stid,
3324 ep->com.dev->rdev.lldi.rxq_ids[0], 0);
3327 err = c4iw_wait_for_reply(&ep->com.dev->rdev, &ep->com.wr_wait,
3329 sin6 = (struct sockaddr_in6 *)&ep->com.local_addr;
3330 cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
3331 (const u32 *)&sin6->sin6_addr.s6_addr, 1);
3333 remove_handle(ep->com.dev, &ep->com.dev->stid_idr, ep->stid);
3334 cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid,
3335 ep->com.local_addr.ss_family);
3337 cm_id->rem_ref(cm_id);
3338 c4iw_put_ep(&ep->com);
3342 int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp)
3347 struct c4iw_rdev *rdev;
3349 mutex_lock(&ep->com.mutex);
3351 PDBG("%s ep %p state %s, abrupt %d\n", __func__, ep,
3352 states[ep->com.state], abrupt);
3354 rdev = &ep->com.dev->rdev;
3355 if (c4iw_fatal_error(rdev)) {
3357 close_complete_upcall(ep, -EIO);
3358 ep->com.state = DEAD;
3360 switch (ep->com.state) {
3368 ep->com.state = ABORTING;
3370 ep->com.state = CLOSING;
3373 set_bit(CLOSE_SENT, &ep->com.flags);
3376 if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) {
3379 (void)stop_ep_timer(ep);
3380 ep->com.state = ABORTING;
3382 ep->com.state = MORIBUND;
3388 PDBG("%s ignoring disconnect ep %p state %u\n",
3389 __func__, ep, ep->com.state);
3398 set_bit(EP_DISC_ABORT, &ep->com.history);
3399 close_complete_upcall(ep, -ECONNRESET);
3400 ret = send_abort(ep, NULL, gfp);
3402 set_bit(EP_DISC_CLOSE, &ep->com.history);
3403 ret = send_halfclose(ep, gfp);
3408 mutex_unlock(&ep->com.mutex);
3410 release_ep_resources(ep);
3414 static void active_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb,
3415 struct cpl_fw6_msg_ofld_connection_wr_rpl *req)
3418 int atid = be32_to_cpu(req->tid);
3420 ep = (struct c4iw_ep *)lookup_atid(dev->rdev.lldi.tids,
3421 (__force u32) req->tid);
3425 switch (req->retval) {
3427 set_bit(ACT_RETRY_NOMEM, &ep->com.history);
3428 if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) {
3429 send_fw_act_open_req(ep, atid);
3433 set_bit(ACT_RETRY_INUSE, &ep->com.history);
3434 if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) {
3435 send_fw_act_open_req(ep, atid);
3440 pr_info("%s unexpected ofld conn wr retval %d\n",
3441 __func__, req->retval);
3444 pr_err("active ofld_connect_wr failure %d atid %d\n",
3446 mutex_lock(&dev->rdev.stats.lock);
3447 dev->rdev.stats.act_ofld_conn_fails++;
3448 mutex_unlock(&dev->rdev.stats.lock);
3449 connect_reply_upcall(ep, status2errno(req->retval));
3450 state_set(&ep->com, DEAD);
3451 if (ep->com.remote_addr.ss_family == AF_INET6) {
3452 struct sockaddr_in6 *sin6 =
3453 (struct sockaddr_in6 *)&ep->com.local_addr;
3454 cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
3455 (const u32 *)&sin6->sin6_addr.s6_addr, 1);
3457 remove_handle(dev, &dev->atid_idr, atid);
3458 cxgb4_free_atid(dev->rdev.lldi.tids, atid);
3459 dst_release(ep->dst);
3460 cxgb4_l2t_release(ep->l2t);
3461 c4iw_put_ep(&ep->com);
3464 static void passive_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb,
3465 struct cpl_fw6_msg_ofld_connection_wr_rpl *req)
3467 struct sk_buff *rpl_skb;
3468 struct cpl_pass_accept_req *cpl;
3471 rpl_skb = (struct sk_buff *)(unsigned long)req->cookie;
3474 PDBG("%s passive open failure %d\n", __func__, req->retval);
3475 mutex_lock(&dev->rdev.stats.lock);
3476 dev->rdev.stats.pas_ofld_conn_fails++;
3477 mutex_unlock(&dev->rdev.stats.lock);
3480 cpl = (struct cpl_pass_accept_req *)cplhdr(rpl_skb);
3481 OPCODE_TID(cpl) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ,
3482 (__force u32) htonl(
3483 (__force u32) req->tid)));
3484 ret = pass_accept_req(dev, rpl_skb);
3491 static int deferred_fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb)
3493 struct cpl_fw6_msg *rpl = cplhdr(skb);
3494 struct cpl_fw6_msg_ofld_connection_wr_rpl *req;
3496 switch (rpl->type) {
3498 c4iw_ev_dispatch(dev, (struct t4_cqe *)&rpl->data[0]);
3500 case FW6_TYPE_OFLD_CONNECTION_WR_RPL:
3501 req = (struct cpl_fw6_msg_ofld_connection_wr_rpl *)rpl->data;
3502 switch (req->t_state) {
3504 active_ofld_conn_reply(dev, skb, req);
3507 passive_ofld_conn_reply(dev, skb, req);
3510 pr_err("%s unexpected ofld conn wr state %d\n",
3511 __func__, req->t_state);
3519 static void build_cpl_pass_accept_req(struct sk_buff *skb, int stid , u8 tos)
3522 __be16 hdr_len, vlantag, len;
3524 int tcp_hdr_len, ip_hdr_len;
3526 struct cpl_rx_pkt *cpl = cplhdr(skb);
3527 struct cpl_pass_accept_req *req;
3528 struct tcp_options_received tmp_opt;
3529 struct c4iw_dev *dev;
3530 enum chip_type type;
3532 dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *)));
3533 /* Store values from cpl_rx_pkt in temporary location. */
3534 vlantag = cpl->vlan;
3536 l2info = cpl->l2info;
3537 hdr_len = cpl->hdr_len;
3540 __skb_pull(skb, sizeof(*req) + sizeof(struct rss_header));
3543 * We need to parse the TCP options from SYN packet.
3544 * to generate cpl_pass_accept_req.
3546 memset(&tmp_opt, 0, sizeof(tmp_opt));
3547 tcp_clear_options(&tmp_opt);
3548 tcp_parse_options(skb, &tmp_opt, 0, NULL);
3550 req = (struct cpl_pass_accept_req *)__skb_push(skb, sizeof(*req));
3551 memset(req, 0, sizeof(*req));
3552 req->l2info = cpu_to_be16(SYN_INTF_V(intf) |
3553 SYN_MAC_IDX_V(RX_MACIDX_G(
3554 be32_to_cpu(l2info))) |
3556 type = dev->rdev.lldi.adapter_type;
3557 tcp_hdr_len = RX_TCPHDR_LEN_G(be16_to_cpu(hdr_len));
3558 ip_hdr_len = RX_IPHDR_LEN_G(be16_to_cpu(hdr_len));
3560 cpu_to_be32(SYN_RX_CHAN_V(RX_CHAN_G(be32_to_cpu(l2info))));
3561 if (CHELSIO_CHIP_VERSION(type) <= CHELSIO_T5) {
3562 eth_hdr_len = is_t4(type) ?
3563 RX_ETHHDR_LEN_G(be32_to_cpu(l2info)) :
3564 RX_T5_ETHHDR_LEN_G(be32_to_cpu(l2info));
3565 req->hdr_len |= cpu_to_be32(TCP_HDR_LEN_V(tcp_hdr_len) |
3566 IP_HDR_LEN_V(ip_hdr_len) |
3567 ETH_HDR_LEN_V(eth_hdr_len));
3568 } else { /* T6 and later */
3569 eth_hdr_len = RX_T6_ETHHDR_LEN_G(be32_to_cpu(l2info));
3570 req->hdr_len |= cpu_to_be32(T6_TCP_HDR_LEN_V(tcp_hdr_len) |
3571 T6_IP_HDR_LEN_V(ip_hdr_len) |
3572 T6_ETH_HDR_LEN_V(eth_hdr_len));
3574 req->vlan = vlantag;
3576 req->tos_stid = cpu_to_be32(PASS_OPEN_TID_V(stid) |
3577 PASS_OPEN_TOS_V(tos));
3578 req->tcpopt.mss = htons(tmp_opt.mss_clamp);
3579 if (tmp_opt.wscale_ok)
3580 req->tcpopt.wsf = tmp_opt.snd_wscale;
3581 req->tcpopt.tstamp = tmp_opt.saw_tstamp;
3582 if (tmp_opt.sack_ok)
3583 req->tcpopt.sack = 1;
3584 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ, 0));
3588 static void send_fw_pass_open_req(struct c4iw_dev *dev, struct sk_buff *skb,
3589 __be32 laddr, __be16 lport,
3590 __be32 raddr, __be16 rport,
3591 u32 rcv_isn, u32 filter, u16 window,
3592 u32 rss_qid, u8 port_id)
3594 struct sk_buff *req_skb;
3595 struct fw_ofld_connection_wr *req;
3596 struct cpl_pass_accept_req *cpl = cplhdr(skb);
3599 req_skb = alloc_skb(sizeof(struct fw_ofld_connection_wr), GFP_KERNEL);
3600 req = (struct fw_ofld_connection_wr *)__skb_put(req_skb, sizeof(*req));
3601 memset(req, 0, sizeof(*req));
3602 req->op_compl = htonl(WR_OP_V(FW_OFLD_CONNECTION_WR) | FW_WR_COMPL_F);
3603 req->len16_pkd = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*req), 16)));
3604 req->le.version_cpl = htonl(FW_OFLD_CONNECTION_WR_CPL_F);
3605 req->le.filter = (__force __be32) filter;
3606 req->le.lport = lport;
3607 req->le.pport = rport;
3608 req->le.u.ipv4.lip = laddr;
3609 req->le.u.ipv4.pip = raddr;
3610 req->tcb.rcv_nxt = htonl(rcv_isn + 1);
3611 req->tcb.rcv_adv = htons(window);
3612 req->tcb.t_state_to_astid =
3613 htonl(FW_OFLD_CONNECTION_WR_T_STATE_V(TCP_SYN_RECV) |
3614 FW_OFLD_CONNECTION_WR_RCV_SCALE_V(cpl->tcpopt.wsf) |
3615 FW_OFLD_CONNECTION_WR_ASTID_V(
3616 PASS_OPEN_TID_G(ntohl(cpl->tos_stid))));
3619 * We store the qid in opt2 which will be used by the firmware
3620 * to send us the wr response.
3622 req->tcb.opt2 = htonl(RSS_QUEUE_V(rss_qid));
3625 * We initialize the MSS index in TCB to 0xF.
3626 * So that when driver sends cpl_pass_accept_rpl
3627 * TCB picks up the correct value. If this was 0
3628 * TP will ignore any value > 0 for MSS index.
3630 req->tcb.opt0 = cpu_to_be64(MSS_IDX_V(0xF));
3631 req->cookie = (uintptr_t)skb;
3633 set_wr_txq(req_skb, CPL_PRIORITY_CONTROL, port_id);
3634 ret = cxgb4_ofld_send(dev->rdev.lldi.ports[0], req_skb);
3636 pr_err("%s - cxgb4_ofld_send error %d - dropping\n", __func__,
3644 * Handler for CPL_RX_PKT message. Need to handle cpl_rx_pkt
3645 * messages when a filter is being used instead of server to
3646 * redirect a syn packet. When packets hit filter they are redirected
3647 * to the offload queue and driver tries to establish the connection
3648 * using firmware work request.
3650 static int rx_pkt(struct c4iw_dev *dev, struct sk_buff *skb)
3653 unsigned int filter;
3654 struct ethhdr *eh = NULL;
3655 struct vlan_ethhdr *vlan_eh = NULL;
3657 struct tcphdr *tcph;
3658 struct rss_header *rss = (void *)skb->data;
3659 struct cpl_rx_pkt *cpl = (void *)skb->data;
3660 struct cpl_pass_accept_req *req = (void *)(rss + 1);
3661 struct l2t_entry *e;
3662 struct dst_entry *dst;
3663 struct c4iw_ep *lep;
3665 struct port_info *pi;
3666 struct net_device *pdev;
3667 u16 rss_qid, eth_hdr_len;
3670 struct neighbour *neigh;
3672 /* Drop all non-SYN packets */
3673 if (!(cpl->l2info & cpu_to_be32(RXF_SYN_F)))
3677 * Drop all packets which did not hit the filter.
3678 * Unlikely to happen.
3680 if (!(rss->filter_hit && rss->filter_tid))
3684 * Calculate the server tid from filter hit index from cpl_rx_pkt.
3686 stid = (__force int) cpu_to_be32((__force u32) rss->hash_val);
3688 lep = (struct c4iw_ep *)lookup_stid(dev->rdev.lldi.tids, stid);
3690 PDBG("%s connect request on invalid stid %d\n", __func__, stid);
3694 switch (CHELSIO_CHIP_VERSION(dev->rdev.lldi.adapter_type)) {
3696 eth_hdr_len = RX_ETHHDR_LEN_G(be32_to_cpu(cpl->l2info));
3699 eth_hdr_len = RX_T5_ETHHDR_LEN_G(be32_to_cpu(cpl->l2info));
3702 eth_hdr_len = RX_T6_ETHHDR_LEN_G(be32_to_cpu(cpl->l2info));
3705 pr_err("T%d Chip is not supported\n",
3706 CHELSIO_CHIP_VERSION(dev->rdev.lldi.adapter_type));
3710 if (eth_hdr_len == ETH_HLEN) {
3711 eh = (struct ethhdr *)(req + 1);
3712 iph = (struct iphdr *)(eh + 1);
3714 vlan_eh = (struct vlan_ethhdr *)(req + 1);
3715 iph = (struct iphdr *)(vlan_eh + 1);
3716 skb->vlan_tci = ntohs(cpl->vlan);
3719 if (iph->version != 0x4)
3722 tcph = (struct tcphdr *)(iph + 1);
3723 skb_set_network_header(skb, (void *)iph - (void *)rss);
3724 skb_set_transport_header(skb, (void *)tcph - (void *)rss);
3727 PDBG("%s lip 0x%x lport %u pip 0x%x pport %u tos %d\n", __func__,
3728 ntohl(iph->daddr), ntohs(tcph->dest), ntohl(iph->saddr),
3729 ntohs(tcph->source), iph->tos);
3731 dst = find_route(dev, iph->daddr, iph->saddr, tcph->dest, tcph->source,
3734 pr_err("%s - failed to find dst entry!\n",
3738 neigh = dst_neigh_lookup_skb(dst, skb);
3741 pr_err("%s - failed to allocate neigh!\n",
3746 if (neigh->dev->flags & IFF_LOOPBACK) {
3747 pdev = ip_dev_find(&init_net, iph->daddr);
3748 e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh,
3750 pi = (struct port_info *)netdev_priv(pdev);
3751 tx_chan = cxgb4_port_chan(pdev);
3754 pdev = get_real_dev(neigh->dev);
3755 e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh,
3757 pi = (struct port_info *)netdev_priv(pdev);
3758 tx_chan = cxgb4_port_chan(pdev);
3760 neigh_release(neigh);
3762 pr_err("%s - failed to allocate l2t entry!\n",
3767 step = dev->rdev.lldi.nrxq / dev->rdev.lldi.nchan;
3768 rss_qid = dev->rdev.lldi.rxq_ids[pi->port_id * step];
3769 window = (__force u16) htons((__force u16)tcph->window);
3771 /* Calcuate filter portion for LE region. */
3772 filter = (__force unsigned int) cpu_to_be32(cxgb4_select_ntuple(
3773 dev->rdev.lldi.ports[0],
3777 * Synthesize the cpl_pass_accept_req. We have everything except the
3778 * TID. Once firmware sends a reply with TID we update the TID field
3779 * in cpl and pass it through the regular cpl_pass_accept_req path.
3781 build_cpl_pass_accept_req(skb, stid, iph->tos);
3782 send_fw_pass_open_req(dev, skb, iph->daddr, tcph->dest, iph->saddr,
3783 tcph->source, ntohl(tcph->seq), filter, window,
3784 rss_qid, pi->port_id);
3785 cxgb4_l2t_release(e);
3793 * These are the real handlers that are called from a
3796 static c4iw_handler_func work_handlers[NUM_CPL_CMDS] = {
3797 [CPL_ACT_ESTABLISH] = act_establish,
3798 [CPL_ACT_OPEN_RPL] = act_open_rpl,
3799 [CPL_RX_DATA] = rx_data,
3800 [CPL_ABORT_RPL_RSS] = abort_rpl,
3801 [CPL_ABORT_RPL] = abort_rpl,
3802 [CPL_PASS_OPEN_RPL] = pass_open_rpl,
3803 [CPL_CLOSE_LISTSRV_RPL] = close_listsrv_rpl,
3804 [CPL_PASS_ACCEPT_REQ] = pass_accept_req,
3805 [CPL_PASS_ESTABLISH] = pass_establish,
3806 [CPL_PEER_CLOSE] = peer_close,
3807 [CPL_ABORT_REQ_RSS] = peer_abort,
3808 [CPL_CLOSE_CON_RPL] = close_con_rpl,
3809 [CPL_RDMA_TERMINATE] = terminate,
3810 [CPL_FW4_ACK] = fw4_ack,
3811 [CPL_FW6_MSG] = deferred_fw6_msg,
3812 [CPL_RX_PKT] = rx_pkt
3815 static void process_timeout(struct c4iw_ep *ep)
3817 struct c4iw_qp_attributes attrs;
3820 mutex_lock(&ep->com.mutex);
3821 PDBG("%s ep %p tid %u state %d\n", __func__, ep, ep->hwtid,
3823 set_bit(TIMEDOUT, &ep->com.history);
3824 switch (ep->com.state) {
3826 __state_set(&ep->com, ABORTING);
3827 connect_reply_upcall(ep, -ETIMEDOUT);
3830 __state_set(&ep->com, ABORTING);
3834 if (ep->com.cm_id && ep->com.qp) {
3835 attrs.next_state = C4IW_QP_STATE_ERROR;
3836 c4iw_modify_qp(ep->com.qp->rhp,
3837 ep->com.qp, C4IW_QP_ATTR_NEXT_STATE,
3840 __state_set(&ep->com, ABORTING);
3841 close_complete_upcall(ep, -ETIMEDOUT);
3847 * These states are expected if the ep timed out at the same
3848 * time as another thread was calling stop_ep_timer().
3849 * So we silently do nothing for these states.
3854 WARN(1, "%s unexpected state ep %p tid %u state %u\n",
3855 __func__, ep, ep->hwtid, ep->com.state);
3859 abort_connection(ep, NULL, GFP_KERNEL);
3860 mutex_unlock(&ep->com.mutex);
3861 c4iw_put_ep(&ep->com);
3864 static void process_timedout_eps(void)
3868 spin_lock_irq(&timeout_lock);
3869 while (!list_empty(&timeout_list)) {
3870 struct list_head *tmp;
3872 tmp = timeout_list.next;
3876 spin_unlock_irq(&timeout_lock);
3877 ep = list_entry(tmp, struct c4iw_ep, entry);
3878 process_timeout(ep);
3879 spin_lock_irq(&timeout_lock);
3881 spin_unlock_irq(&timeout_lock);
3884 static void process_work(struct work_struct *work)
3886 struct sk_buff *skb = NULL;
3887 struct c4iw_dev *dev;
3888 struct cpl_act_establish *rpl;
3889 unsigned int opcode;
3892 process_timedout_eps();
3893 while ((skb = skb_dequeue(&rxq))) {
3895 dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *)));
3896 opcode = rpl->ot.opcode;
3898 BUG_ON(!work_handlers[opcode]);
3899 ret = work_handlers[opcode](dev, skb);
3902 process_timedout_eps();
3906 static DECLARE_WORK(skb_work, process_work);
3908 static void ep_timeout(unsigned long arg)
3910 struct c4iw_ep *ep = (struct c4iw_ep *)arg;
3913 spin_lock(&timeout_lock);
3914 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) {
3916 * Only insert if it is not already on the list.
3918 if (!ep->entry.next) {
3919 list_add_tail(&ep->entry, &timeout_list);
3923 spin_unlock(&timeout_lock);
3925 queue_work(workq, &skb_work);
3929 * All the CM events are handled on a work queue to have a safe context.
3931 static int sched(struct c4iw_dev *dev, struct sk_buff *skb)
3935 * Save dev in the skb->cb area.
3937 *((struct c4iw_dev **) (skb->cb + sizeof(void *))) = dev;
3940 * Queue the skb and schedule the worker thread.
3942 skb_queue_tail(&rxq, skb);
3943 queue_work(workq, &skb_work);
3947 static int set_tcb_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
3949 struct cpl_set_tcb_rpl *rpl = cplhdr(skb);
3951 if (rpl->status != CPL_ERR_NONE) {
3952 printk(KERN_ERR MOD "Unexpected SET_TCB_RPL status %u "
3953 "for tid %u\n", rpl->status, GET_TID(rpl));
3959 static int fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb)
3961 struct cpl_fw6_msg *rpl = cplhdr(skb);
3962 struct c4iw_wr_wait *wr_waitp;
3965 PDBG("%s type %u\n", __func__, rpl->type);
3967 switch (rpl->type) {
3968 case FW6_TYPE_WR_RPL:
3969 ret = (int)((be64_to_cpu(rpl->data[0]) >> 8) & 0xff);
3970 wr_waitp = (struct c4iw_wr_wait *)(__force unsigned long) rpl->data[1];
3971 PDBG("%s wr_waitp %p ret %u\n", __func__, wr_waitp, ret);
3973 c4iw_wake_up(wr_waitp, ret ? -ret : 0);
3977 case FW6_TYPE_OFLD_CONNECTION_WR_RPL:
3981 printk(KERN_ERR MOD "%s unexpected fw6 msg type %u\n", __func__,
3989 static int peer_abort_intr(struct c4iw_dev *dev, struct sk_buff *skb)
3991 struct cpl_abort_req_rss *req = cplhdr(skb);
3993 struct tid_info *t = dev->rdev.lldi.tids;
3994 unsigned int tid = GET_TID(req);
3996 ep = lookup_tid(t, tid);
3998 printk(KERN_WARNING MOD
3999 "Abort on non-existent endpoint, tid %d\n", tid);
4003 if (is_neg_adv(req->status)) {
4004 PDBG("%s Negative advice on abort- tid %u status %d (%s)\n",
4005 __func__, ep->hwtid, req->status,
4006 neg_adv_str(req->status));
4007 ep->stats.abort_neg_adv++;
4008 dev->rdev.stats.neg_adv++;
4012 PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid,
4016 * Wake up any threads in rdma_init() or rdma_fini().
4017 * However, if we are on MPAv2 and want to retry with MPAv1
4018 * then, don't wake up yet.
4020 if (mpa_rev == 2 && !ep->tried_with_mpa_v1) {
4021 if (ep->com.state != MPA_REQ_SENT)
4022 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
4024 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
4030 * Most upcalls from the T4 Core go to sched() to
4031 * schedule the processing on a work queue.
4033 c4iw_handler_func c4iw_handlers[NUM_CPL_CMDS] = {
4034 [CPL_ACT_ESTABLISH] = sched,
4035 [CPL_ACT_OPEN_RPL] = sched,
4036 [CPL_RX_DATA] = sched,
4037 [CPL_ABORT_RPL_RSS] = sched,
4038 [CPL_ABORT_RPL] = sched,
4039 [CPL_PASS_OPEN_RPL] = sched,
4040 [CPL_CLOSE_LISTSRV_RPL] = sched,
4041 [CPL_PASS_ACCEPT_REQ] = sched,
4042 [CPL_PASS_ESTABLISH] = sched,
4043 [CPL_PEER_CLOSE] = sched,
4044 [CPL_CLOSE_CON_RPL] = sched,
4045 [CPL_ABORT_REQ_RSS] = peer_abort_intr,
4046 [CPL_RDMA_TERMINATE] = sched,
4047 [CPL_FW4_ACK] = sched,
4048 [CPL_SET_TCB_RPL] = set_tcb_rpl,
4049 [CPL_FW6_MSG] = fw6_msg,
4050 [CPL_RX_PKT] = sched
4053 int __init c4iw_cm_init(void)
4055 spin_lock_init(&timeout_lock);
4056 skb_queue_head_init(&rxq);
4058 workq = create_singlethread_workqueue("iw_cxgb4");
4065 void c4iw_cm_term(void)
4067 WARN_ON(!list_empty(&timeout_list));
4068 flush_workqueue(workq);
4069 destroy_workqueue(workq);