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>
52 #include <libcxgb_cm.h>
56 static char *states[] = {
73 module_param(nocong, int, 0644);
74 MODULE_PARM_DESC(nocong, "Turn of congestion control (default=0)");
76 static int enable_ecn;
77 module_param(enable_ecn, int, 0644);
78 MODULE_PARM_DESC(enable_ecn, "Enable ECN (default=0/disabled)");
80 static int dack_mode = 1;
81 module_param(dack_mode, int, 0644);
82 MODULE_PARM_DESC(dack_mode, "Delayed ack mode (default=1)");
84 uint c4iw_max_read_depth = 32;
85 module_param(c4iw_max_read_depth, int, 0644);
86 MODULE_PARM_DESC(c4iw_max_read_depth,
87 "Per-connection max ORD/IRD (default=32)");
89 static int enable_tcp_timestamps;
90 module_param(enable_tcp_timestamps, int, 0644);
91 MODULE_PARM_DESC(enable_tcp_timestamps, "Enable tcp timestamps (default=0)");
93 static int enable_tcp_sack;
94 module_param(enable_tcp_sack, int, 0644);
95 MODULE_PARM_DESC(enable_tcp_sack, "Enable tcp SACK (default=0)");
97 static int enable_tcp_window_scaling = 1;
98 module_param(enable_tcp_window_scaling, int, 0644);
99 MODULE_PARM_DESC(enable_tcp_window_scaling,
100 "Enable tcp window scaling (default=1)");
102 static int peer2peer = 1;
103 module_param(peer2peer, int, 0644);
104 MODULE_PARM_DESC(peer2peer, "Support peer2peer ULPs (default=1)");
106 static int p2p_type = FW_RI_INIT_P2PTYPE_READ_REQ;
107 module_param(p2p_type, int, 0644);
108 MODULE_PARM_DESC(p2p_type, "RDMAP opcode to use for the RTR message: "
109 "1=RDMA_READ 0=RDMA_WRITE (default 1)");
111 static int ep_timeout_secs = 60;
112 module_param(ep_timeout_secs, int, 0644);
113 MODULE_PARM_DESC(ep_timeout_secs, "CM Endpoint operation timeout "
114 "in seconds (default=60)");
116 static int mpa_rev = 2;
117 module_param(mpa_rev, int, 0644);
118 MODULE_PARM_DESC(mpa_rev, "MPA Revision, 0 supports amso1100, "
119 "1 is RFC5044 spec compliant, 2 is IETF MPA Peer Connect Draft"
120 " compliant (default=2)");
122 static int markers_enabled;
123 module_param(markers_enabled, int, 0644);
124 MODULE_PARM_DESC(markers_enabled, "Enable MPA MARKERS (default(0)=disabled)");
126 static int crc_enabled = 1;
127 module_param(crc_enabled, int, 0644);
128 MODULE_PARM_DESC(crc_enabled, "Enable MPA CRC (default(1)=enabled)");
130 static int rcv_win = 256 * 1024;
131 module_param(rcv_win, int, 0644);
132 MODULE_PARM_DESC(rcv_win, "TCP receive window in bytes (default=256KB)");
134 static int snd_win = 128 * 1024;
135 module_param(snd_win, int, 0644);
136 MODULE_PARM_DESC(snd_win, "TCP send window in bytes (default=128KB)");
138 static struct workqueue_struct *workq;
140 static struct sk_buff_head rxq;
142 static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp);
143 static void ep_timeout(struct timer_list *t);
144 static void connect_reply_upcall(struct c4iw_ep *ep, int status);
145 static int sched(struct c4iw_dev *dev, struct sk_buff *skb);
147 static LIST_HEAD(timeout_list);
148 static spinlock_t timeout_lock;
150 static void deref_cm_id(struct c4iw_ep_common *epc)
152 epc->cm_id->rem_ref(epc->cm_id);
154 set_bit(CM_ID_DEREFED, &epc->history);
157 static void ref_cm_id(struct c4iw_ep_common *epc)
159 set_bit(CM_ID_REFED, &epc->history);
160 epc->cm_id->add_ref(epc->cm_id);
163 static void deref_qp(struct c4iw_ep *ep)
165 c4iw_qp_rem_ref(&ep->com.qp->ibqp);
166 clear_bit(QP_REFERENCED, &ep->com.flags);
167 set_bit(QP_DEREFED, &ep->com.history);
170 static void ref_qp(struct c4iw_ep *ep)
172 set_bit(QP_REFERENCED, &ep->com.flags);
173 set_bit(QP_REFED, &ep->com.history);
174 c4iw_qp_add_ref(&ep->com.qp->ibqp);
177 static void start_ep_timer(struct c4iw_ep *ep)
179 pr_debug("ep %p\n", ep);
180 if (timer_pending(&ep->timer)) {
181 pr_err("%s timer already started! ep %p\n",
185 clear_bit(TIMEOUT, &ep->com.flags);
186 c4iw_get_ep(&ep->com);
187 ep->timer.expires = jiffies + ep_timeout_secs * HZ;
188 add_timer(&ep->timer);
191 static int stop_ep_timer(struct c4iw_ep *ep)
193 pr_debug("ep %p stopping\n", ep);
194 del_timer_sync(&ep->timer);
195 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) {
196 c4iw_put_ep(&ep->com);
202 static int c4iw_l2t_send(struct c4iw_rdev *rdev, struct sk_buff *skb,
203 struct l2t_entry *l2e)
207 if (c4iw_fatal_error(rdev)) {
209 pr_err("%s - device in error state - dropping\n", __func__);
212 error = cxgb4_l2t_send(rdev->lldi.ports[0], skb, l2e);
215 else if (error == NET_XMIT_DROP)
217 return error < 0 ? error : 0;
220 int c4iw_ofld_send(struct c4iw_rdev *rdev, struct sk_buff *skb)
224 if (c4iw_fatal_error(rdev)) {
226 pr_err("%s - device in error state - dropping\n", __func__);
229 error = cxgb4_ofld_send(rdev->lldi.ports[0], skb);
232 return error < 0 ? error : 0;
235 static void release_tid(struct c4iw_rdev *rdev, u32 hwtid, struct sk_buff *skb)
237 u32 len = roundup(sizeof(struct cpl_tid_release), 16);
239 skb = get_skb(skb, len, GFP_KERNEL);
243 cxgb_mk_tid_release(skb, len, hwtid, 0);
244 c4iw_ofld_send(rdev, skb);
248 static void set_emss(struct c4iw_ep *ep, u16 opt)
250 ep->emss = ep->com.dev->rdev.lldi.mtus[TCPOPT_MSS_G(opt)] -
251 ((AF_INET == ep->com.remote_addr.ss_family) ?
252 sizeof(struct iphdr) : sizeof(struct ipv6hdr)) -
253 sizeof(struct tcphdr);
255 if (TCPOPT_TSTAMP_G(opt))
256 ep->emss -= round_up(TCPOLEN_TIMESTAMP, 4);
260 pr_debug("Warning: misaligned mtu idx %u mss %u emss=%u\n",
261 TCPOPT_MSS_G(opt), ep->mss, ep->emss);
262 pr_debug("mss_idx %u mss %u emss=%u\n", TCPOPT_MSS_G(opt), ep->mss,
266 static enum c4iw_ep_state state_read(struct c4iw_ep_common *epc)
268 enum c4iw_ep_state state;
270 mutex_lock(&epc->mutex);
272 mutex_unlock(&epc->mutex);
276 static void __state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new)
281 static void state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new)
283 mutex_lock(&epc->mutex);
284 pr_debug("%s -> %s\n", states[epc->state], states[new]);
285 __state_set(epc, new);
286 mutex_unlock(&epc->mutex);
290 static int alloc_ep_skb_list(struct sk_buff_head *ep_skb_list, int size)
296 len = roundup(sizeof(union cpl_wr_size), 16);
297 for (i = 0; i < size; i++) {
298 skb = alloc_skb(len, GFP_KERNEL);
301 skb_queue_tail(ep_skb_list, skb);
305 skb_queue_purge(ep_skb_list);
309 static void *alloc_ep(int size, gfp_t gfp)
311 struct c4iw_ep_common *epc;
313 epc = kzalloc(size, gfp);
315 epc->wr_waitp = c4iw_alloc_wr_wait(gfp);
316 if (!epc->wr_waitp) {
321 kref_init(&epc->kref);
322 mutex_init(&epc->mutex);
323 c4iw_init_wr_wait(epc->wr_waitp);
325 pr_debug("alloc ep %p\n", epc);
330 static void remove_ep_tid(struct c4iw_ep *ep)
334 spin_lock_irqsave(&ep->com.dev->lock, flags);
335 _remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid, 0);
336 if (idr_is_empty(&ep->com.dev->hwtid_idr))
337 wake_up(&ep->com.dev->wait);
338 spin_unlock_irqrestore(&ep->com.dev->lock, flags);
341 static void insert_ep_tid(struct c4iw_ep *ep)
345 spin_lock_irqsave(&ep->com.dev->lock, flags);
346 _insert_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep, ep->hwtid, 0);
347 spin_unlock_irqrestore(&ep->com.dev->lock, flags);
351 * Atomically lookup the ep ptr given the tid and grab a reference on the ep.
353 static struct c4iw_ep *get_ep_from_tid(struct c4iw_dev *dev, unsigned int tid)
358 spin_lock_irqsave(&dev->lock, flags);
359 ep = idr_find(&dev->hwtid_idr, tid);
361 c4iw_get_ep(&ep->com);
362 spin_unlock_irqrestore(&dev->lock, flags);
367 * Atomically lookup the ep ptr given the stid and grab a reference on the ep.
369 static struct c4iw_listen_ep *get_ep_from_stid(struct c4iw_dev *dev,
372 struct c4iw_listen_ep *ep;
375 spin_lock_irqsave(&dev->lock, flags);
376 ep = idr_find(&dev->stid_idr, stid);
378 c4iw_get_ep(&ep->com);
379 spin_unlock_irqrestore(&dev->lock, flags);
383 void _c4iw_free_ep(struct kref *kref)
387 ep = container_of(kref, struct c4iw_ep, com.kref);
388 pr_debug("ep %p state %s\n", ep, states[ep->com.state]);
389 if (test_bit(QP_REFERENCED, &ep->com.flags))
391 if (test_bit(RELEASE_RESOURCES, &ep->com.flags)) {
392 if (ep->com.remote_addr.ss_family == AF_INET6) {
393 struct sockaddr_in6 *sin6 =
394 (struct sockaddr_in6 *)
398 ep->com.dev->rdev.lldi.ports[0],
399 (const u32 *)&sin6->sin6_addr.s6_addr,
402 cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid,
403 ep->com.local_addr.ss_family);
404 dst_release(ep->dst);
405 cxgb4_l2t_release(ep->l2t);
407 kfree_skb(ep->mpa_skb);
409 if (!skb_queue_empty(&ep->com.ep_skb_list))
410 skb_queue_purge(&ep->com.ep_skb_list);
411 c4iw_put_wr_wait(ep->com.wr_waitp);
415 static void release_ep_resources(struct c4iw_ep *ep)
417 set_bit(RELEASE_RESOURCES, &ep->com.flags);
420 * If we have a hwtid, then remove it from the idr table
421 * so lookups will no longer find this endpoint. Otherwise
422 * we have a race where one thread finds the ep ptr just
423 * before the other thread is freeing the ep memory.
427 c4iw_put_ep(&ep->com);
430 static int status2errno(int status)
435 case CPL_ERR_CONN_RESET:
437 case CPL_ERR_ARP_MISS:
438 return -EHOSTUNREACH;
439 case CPL_ERR_CONN_TIMEDOUT:
441 case CPL_ERR_TCAM_FULL:
443 case CPL_ERR_CONN_EXIST:
451 * Try and reuse skbs already allocated...
453 static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp)
455 if (skb && !skb_is_nonlinear(skb) && !skb_cloned(skb)) {
458 skb_reset_transport_header(skb);
460 skb = alloc_skb(len, gfp);
462 t4_set_arp_err_handler(skb, NULL, NULL);
466 static struct net_device *get_real_dev(struct net_device *egress_dev)
468 return rdma_vlan_dev_real_dev(egress_dev) ? : egress_dev;
471 static void arp_failure_discard(void *handle, struct sk_buff *skb)
473 pr_err("ARP failure\n");
477 static void mpa_start_arp_failure(void *handle, struct sk_buff *skb)
479 pr_err("ARP failure during MPA Negotiation - Closing Connection\n");
484 FAKE_CPL_PUT_EP_SAFE = NUM_CPL_CMDS + 0,
485 FAKE_CPL_PASS_PUT_EP_SAFE = NUM_CPL_CMDS + 1,
488 static int _put_ep_safe(struct c4iw_dev *dev, struct sk_buff *skb)
492 ep = *((struct c4iw_ep **)(skb->cb + 2 * sizeof(void *)));
493 release_ep_resources(ep);
498 static int _put_pass_ep_safe(struct c4iw_dev *dev, struct sk_buff *skb)
502 ep = *((struct c4iw_ep **)(skb->cb + 2 * sizeof(void *)));
503 c4iw_put_ep(&ep->parent_ep->com);
504 release_ep_resources(ep);
510 * Fake up a special CPL opcode and call sched() so process_work() will call
511 * _put_ep_safe() in a safe context to free the ep resources. This is needed
512 * because ARP error handlers are called in an ATOMIC context, and
513 * _c4iw_free_ep() needs to block.
515 static void queue_arp_failure_cpl(struct c4iw_ep *ep, struct sk_buff *skb,
518 struct cpl_act_establish *rpl = cplhdr(skb);
520 /* Set our special ARP_FAILURE opcode */
521 rpl->ot.opcode = cpl;
524 * Save ep in the skb->cb area, after where sched() will save the dev
527 *((struct c4iw_ep **)(skb->cb + 2 * sizeof(void *))) = ep;
528 sched(ep->com.dev, skb);
531 /* Handle an ARP failure for an accept */
532 static void pass_accept_rpl_arp_failure(void *handle, struct sk_buff *skb)
534 struct c4iw_ep *ep = handle;
536 pr_err("ARP failure during accept - tid %u - dropping connection\n",
539 __state_set(&ep->com, DEAD);
540 queue_arp_failure_cpl(ep, skb, FAKE_CPL_PASS_PUT_EP_SAFE);
544 * Handle an ARP failure for an active open.
546 static void act_open_req_arp_failure(void *handle, struct sk_buff *skb)
548 struct c4iw_ep *ep = handle;
550 pr_err("ARP failure during connect\n");
551 connect_reply_upcall(ep, -EHOSTUNREACH);
552 __state_set(&ep->com, DEAD);
553 if (ep->com.remote_addr.ss_family == AF_INET6) {
554 struct sockaddr_in6 *sin6 =
555 (struct sockaddr_in6 *)&ep->com.local_addr;
556 cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
557 (const u32 *)&sin6->sin6_addr.s6_addr, 1);
559 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid);
560 cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid);
561 queue_arp_failure_cpl(ep, skb, FAKE_CPL_PUT_EP_SAFE);
565 * Handle an ARP failure for a CPL_ABORT_REQ. Change it into a no RST variant
568 static void abort_arp_failure(void *handle, struct sk_buff *skb)
571 struct c4iw_ep *ep = handle;
572 struct c4iw_rdev *rdev = &ep->com.dev->rdev;
573 struct cpl_abort_req *req = cplhdr(skb);
575 pr_debug("rdev %p\n", rdev);
576 req->cmd = CPL_ABORT_NO_RST;
578 ret = c4iw_ofld_send(rdev, skb);
580 __state_set(&ep->com, DEAD);
581 queue_arp_failure_cpl(ep, skb, FAKE_CPL_PUT_EP_SAFE);
586 static int send_flowc(struct c4iw_ep *ep)
588 struct fw_flowc_wr *flowc;
589 struct sk_buff *skb = skb_dequeue(&ep->com.ep_skb_list);
591 u16 vlan = ep->l2t->vlan;
597 if (vlan == CPL_L2T_VLAN_NONE)
602 flowc = __skb_put(skb, FLOWC_LEN);
604 flowc->op_to_nparams = cpu_to_be32(FW_WR_OP_V(FW_FLOWC_WR) |
605 FW_FLOWC_WR_NPARAMS_V(nparams));
606 flowc->flowid_len16 = cpu_to_be32(FW_WR_LEN16_V(DIV_ROUND_UP(FLOWC_LEN,
607 16)) | FW_WR_FLOWID_V(ep->hwtid));
609 flowc->mnemval[0].mnemonic = FW_FLOWC_MNEM_PFNVFN;
610 flowc->mnemval[0].val = cpu_to_be32(FW_PFVF_CMD_PFN_V
611 (ep->com.dev->rdev.lldi.pf));
612 flowc->mnemval[1].mnemonic = FW_FLOWC_MNEM_CH;
613 flowc->mnemval[1].val = cpu_to_be32(ep->tx_chan);
614 flowc->mnemval[2].mnemonic = FW_FLOWC_MNEM_PORT;
615 flowc->mnemval[2].val = cpu_to_be32(ep->tx_chan);
616 flowc->mnemval[3].mnemonic = FW_FLOWC_MNEM_IQID;
617 flowc->mnemval[3].val = cpu_to_be32(ep->rss_qid);
618 flowc->mnemval[4].mnemonic = FW_FLOWC_MNEM_SNDNXT;
619 flowc->mnemval[4].val = cpu_to_be32(ep->snd_seq);
620 flowc->mnemval[5].mnemonic = FW_FLOWC_MNEM_RCVNXT;
621 flowc->mnemval[5].val = cpu_to_be32(ep->rcv_seq);
622 flowc->mnemval[6].mnemonic = FW_FLOWC_MNEM_SNDBUF;
623 flowc->mnemval[6].val = cpu_to_be32(ep->snd_win);
624 flowc->mnemval[7].mnemonic = FW_FLOWC_MNEM_MSS;
625 flowc->mnemval[7].val = cpu_to_be32(ep->emss);
629 pri = (vlan & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT;
630 flowc->mnemval[8].mnemonic = FW_FLOWC_MNEM_SCHEDCLASS;
631 flowc->mnemval[8].val = cpu_to_be32(pri);
633 /* Pad WR to 16 byte boundary */
634 flowc->mnemval[8].mnemonic = 0;
635 flowc->mnemval[8].val = 0;
637 for (i = 0; i < 9; i++) {
638 flowc->mnemval[i].r4[0] = 0;
639 flowc->mnemval[i].r4[1] = 0;
640 flowc->mnemval[i].r4[2] = 0;
643 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
644 return c4iw_ofld_send(&ep->com.dev->rdev, skb);
647 static int send_halfclose(struct c4iw_ep *ep)
649 struct sk_buff *skb = skb_dequeue(&ep->com.ep_skb_list);
650 u32 wrlen = roundup(sizeof(struct cpl_close_con_req), 16);
652 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
656 cxgb_mk_close_con_req(skb, wrlen, ep->hwtid, ep->txq_idx,
657 NULL, arp_failure_discard);
659 return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
662 static int send_abort(struct c4iw_ep *ep)
664 u32 wrlen = roundup(sizeof(struct cpl_abort_req), 16);
665 struct sk_buff *req_skb = skb_dequeue(&ep->com.ep_skb_list);
667 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
668 if (WARN_ON(!req_skb))
671 cxgb_mk_abort_req(req_skb, wrlen, ep->hwtid, ep->txq_idx,
672 ep, abort_arp_failure);
674 return c4iw_l2t_send(&ep->com.dev->rdev, req_skb, ep->l2t);
677 static int send_connect(struct c4iw_ep *ep)
679 struct cpl_act_open_req *req = NULL;
680 struct cpl_t5_act_open_req *t5req = NULL;
681 struct cpl_t6_act_open_req *t6req = NULL;
682 struct cpl_act_open_req6 *req6 = NULL;
683 struct cpl_t5_act_open_req6 *t5req6 = NULL;
684 struct cpl_t6_act_open_req6 *t6req6 = NULL;
688 unsigned int mtu_idx;
690 int win, sizev4, sizev6, wrlen;
691 struct sockaddr_in *la = (struct sockaddr_in *)
693 struct sockaddr_in *ra = (struct sockaddr_in *)
694 &ep->com.remote_addr;
695 struct sockaddr_in6 *la6 = (struct sockaddr_in6 *)
697 struct sockaddr_in6 *ra6 = (struct sockaddr_in6 *)
698 &ep->com.remote_addr;
700 enum chip_type adapter_type = ep->com.dev->rdev.lldi.adapter_type;
701 u32 isn = (prandom_u32() & ~7UL) - 1;
702 struct net_device *netdev;
705 netdev = ep->com.dev->rdev.lldi.ports[0];
707 switch (CHELSIO_CHIP_VERSION(adapter_type)) {
709 sizev4 = sizeof(struct cpl_act_open_req);
710 sizev6 = sizeof(struct cpl_act_open_req6);
713 sizev4 = sizeof(struct cpl_t5_act_open_req);
714 sizev6 = sizeof(struct cpl_t5_act_open_req6);
717 sizev4 = sizeof(struct cpl_t6_act_open_req);
718 sizev6 = sizeof(struct cpl_t6_act_open_req6);
721 pr_err("T%d Chip is not supported\n",
722 CHELSIO_CHIP_VERSION(adapter_type));
726 wrlen = (ep->com.remote_addr.ss_family == AF_INET) ?
727 roundup(sizev4, 16) :
730 pr_debug("ep %p atid %u\n", ep, ep->atid);
732 skb = get_skb(NULL, wrlen, GFP_KERNEL);
734 pr_err("%s - failed to alloc skb\n", __func__);
737 set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx);
739 cxgb_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx,
740 enable_tcp_timestamps,
741 (ep->com.remote_addr.ss_family == AF_INET) ? 0 : 1);
742 wscale = cxgb_compute_wscale(rcv_win);
745 * Specify the largest window that will fit in opt0. The
746 * remainder will be specified in the rx_data_ack.
748 win = ep->rcv_win >> 10;
749 if (win > RCV_BUFSIZ_M)
752 opt0 = (nocong ? NO_CONG_F : 0) |
755 WND_SCALE_V(wscale) |
757 L2T_IDX_V(ep->l2t->idx) |
758 TX_CHAN_V(ep->tx_chan) |
759 SMAC_SEL_V(ep->smac_idx) |
760 DSCP_V(ep->tos >> 2) |
761 ULP_MODE_V(ULP_MODE_TCPDDP) |
763 opt2 = RX_CHANNEL_V(0) |
764 CCTRL_ECN_V(enable_ecn) |
765 RSS_QUEUE_VALID_F | RSS_QUEUE_V(ep->rss_qid);
766 if (enable_tcp_timestamps)
767 opt2 |= TSTAMPS_EN_F;
770 if (wscale && enable_tcp_window_scaling)
771 opt2 |= WND_SCALE_EN_F;
772 if (CHELSIO_CHIP_VERSION(adapter_type) > CHELSIO_T4) {
776 opt2 |= T5_OPT_2_VALID_F;
777 opt2 |= CONG_CNTRL_V(CONG_ALG_TAHOE);
781 params = cxgb4_select_ntuple(netdev, ep->l2t);
783 if (ep->com.remote_addr.ss_family == AF_INET6)
784 cxgb4_clip_get(ep->com.dev->rdev.lldi.ports[0],
785 (const u32 *)&la6->sin6_addr.s6_addr, 1);
787 t4_set_arp_err_handler(skb, ep, act_open_req_arp_failure);
789 if (ep->com.remote_addr.ss_family == AF_INET) {
790 switch (CHELSIO_CHIP_VERSION(adapter_type)) {
792 req = skb_put(skb, wrlen);
796 t5req = skb_put(skb, wrlen);
797 INIT_TP_WR(t5req, 0);
798 req = (struct cpl_act_open_req *)t5req;
801 t6req = skb_put(skb, wrlen);
802 INIT_TP_WR(t6req, 0);
803 req = (struct cpl_act_open_req *)t6req;
804 t5req = (struct cpl_t5_act_open_req *)t6req;
807 pr_err("T%d Chip is not supported\n",
808 CHELSIO_CHIP_VERSION(adapter_type));
813 OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ,
814 ((ep->rss_qid<<14) | ep->atid)));
815 req->local_port = la->sin_port;
816 req->peer_port = ra->sin_port;
817 req->local_ip = la->sin_addr.s_addr;
818 req->peer_ip = ra->sin_addr.s_addr;
819 req->opt0 = cpu_to_be64(opt0);
821 if (is_t4(ep->com.dev->rdev.lldi.adapter_type)) {
822 req->params = cpu_to_be32(params);
823 req->opt2 = cpu_to_be32(opt2);
825 if (is_t5(ep->com.dev->rdev.lldi.adapter_type)) {
827 cpu_to_be64(FILTER_TUPLE_V(params));
828 t5req->rsvd = cpu_to_be32(isn);
829 pr_debug("snd_isn %u\n", t5req->rsvd);
830 t5req->opt2 = cpu_to_be32(opt2);
833 cpu_to_be64(FILTER_TUPLE_V(params));
834 t6req->rsvd = cpu_to_be32(isn);
835 pr_debug("snd_isn %u\n", t6req->rsvd);
836 t6req->opt2 = cpu_to_be32(opt2);
840 switch (CHELSIO_CHIP_VERSION(adapter_type)) {
842 req6 = skb_put(skb, wrlen);
846 t5req6 = skb_put(skb, wrlen);
847 INIT_TP_WR(t5req6, 0);
848 req6 = (struct cpl_act_open_req6 *)t5req6;
851 t6req6 = skb_put(skb, wrlen);
852 INIT_TP_WR(t6req6, 0);
853 req6 = (struct cpl_act_open_req6 *)t6req6;
854 t5req6 = (struct cpl_t5_act_open_req6 *)t6req6;
857 pr_err("T%d Chip is not supported\n",
858 CHELSIO_CHIP_VERSION(adapter_type));
863 OPCODE_TID(req6) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6,
864 ((ep->rss_qid<<14)|ep->atid)));
865 req6->local_port = la6->sin6_port;
866 req6->peer_port = ra6->sin6_port;
867 req6->local_ip_hi = *((__be64 *)(la6->sin6_addr.s6_addr));
868 req6->local_ip_lo = *((__be64 *)(la6->sin6_addr.s6_addr + 8));
869 req6->peer_ip_hi = *((__be64 *)(ra6->sin6_addr.s6_addr));
870 req6->peer_ip_lo = *((__be64 *)(ra6->sin6_addr.s6_addr + 8));
871 req6->opt0 = cpu_to_be64(opt0);
873 if (is_t4(ep->com.dev->rdev.lldi.adapter_type)) {
874 req6->params = cpu_to_be32(cxgb4_select_ntuple(netdev,
876 req6->opt2 = cpu_to_be32(opt2);
878 if (is_t5(ep->com.dev->rdev.lldi.adapter_type)) {
880 cpu_to_be64(FILTER_TUPLE_V(params));
881 t5req6->rsvd = cpu_to_be32(isn);
882 pr_debug("snd_isn %u\n", t5req6->rsvd);
883 t5req6->opt2 = cpu_to_be32(opt2);
886 cpu_to_be64(FILTER_TUPLE_V(params));
887 t6req6->rsvd = cpu_to_be32(isn);
888 pr_debug("snd_isn %u\n", t6req6->rsvd);
889 t6req6->opt2 = cpu_to_be32(opt2);
895 set_bit(ACT_OPEN_REQ, &ep->com.history);
896 ret = c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
898 if (ret && ep->com.remote_addr.ss_family == AF_INET6)
899 cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
900 (const u32 *)&la6->sin6_addr.s6_addr, 1);
904 static int send_mpa_req(struct c4iw_ep *ep, struct sk_buff *skb,
907 int mpalen, wrlen, ret;
908 struct fw_ofld_tx_data_wr *req;
909 struct mpa_message *mpa;
910 struct mpa_v2_conn_params mpa_v2_params;
912 pr_debug("ep %p tid %u pd_len %d\n",
913 ep, ep->hwtid, ep->plen);
915 mpalen = sizeof(*mpa) + ep->plen;
916 if (mpa_rev_to_use == 2)
917 mpalen += sizeof(struct mpa_v2_conn_params);
918 wrlen = roundup(mpalen + sizeof *req, 16);
919 skb = get_skb(skb, wrlen, GFP_KERNEL);
921 connect_reply_upcall(ep, -ENOMEM);
924 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
926 req = skb_put_zero(skb, wrlen);
927 req->op_to_immdlen = cpu_to_be32(
928 FW_WR_OP_V(FW_OFLD_TX_DATA_WR) |
930 FW_WR_IMMDLEN_V(mpalen));
931 req->flowid_len16 = cpu_to_be32(
932 FW_WR_FLOWID_V(ep->hwtid) |
933 FW_WR_LEN16_V(wrlen >> 4));
934 req->plen = cpu_to_be32(mpalen);
935 req->tunnel_to_proxy = cpu_to_be32(
936 FW_OFLD_TX_DATA_WR_FLUSH_F |
937 FW_OFLD_TX_DATA_WR_SHOVE_F);
939 mpa = (struct mpa_message *)(req + 1);
940 memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key));
944 mpa->flags |= MPA_CRC;
945 if (markers_enabled) {
946 mpa->flags |= MPA_MARKERS;
947 ep->mpa_attr.recv_marker_enabled = 1;
949 ep->mpa_attr.recv_marker_enabled = 0;
951 if (mpa_rev_to_use == 2)
952 mpa->flags |= MPA_ENHANCED_RDMA_CONN;
954 mpa->private_data_size = htons(ep->plen);
955 mpa->revision = mpa_rev_to_use;
956 if (mpa_rev_to_use == 1) {
957 ep->tried_with_mpa_v1 = 1;
958 ep->retry_with_mpa_v1 = 0;
961 if (mpa_rev_to_use == 2) {
962 mpa->private_data_size = htons(ntohs(mpa->private_data_size) +
963 sizeof (struct mpa_v2_conn_params));
964 pr_debug("initiator ird %u ord %u\n", ep->ird,
966 mpa_v2_params.ird = htons((u16)ep->ird);
967 mpa_v2_params.ord = htons((u16)ep->ord);
970 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL);
971 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE)
973 htons(MPA_V2_RDMA_WRITE_RTR);
974 else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ)
976 htons(MPA_V2_RDMA_READ_RTR);
978 memcpy(mpa->private_data, &mpa_v2_params,
979 sizeof(struct mpa_v2_conn_params));
982 memcpy(mpa->private_data +
983 sizeof(struct mpa_v2_conn_params),
984 ep->mpa_pkt + sizeof(*mpa), ep->plen);
987 memcpy(mpa->private_data,
988 ep->mpa_pkt + sizeof(*mpa), ep->plen);
991 * Reference the mpa skb. This ensures the data area
992 * will remain in memory until the hw acks the tx.
993 * Function fw4_ack() will deref it.
996 t4_set_arp_err_handler(skb, NULL, arp_failure_discard);
998 ret = c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
1002 __state_set(&ep->com, MPA_REQ_SENT);
1003 ep->mpa_attr.initiator = 1;
1004 ep->snd_seq += mpalen;
1008 static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen)
1011 struct fw_ofld_tx_data_wr *req;
1012 struct mpa_message *mpa;
1013 struct sk_buff *skb;
1014 struct mpa_v2_conn_params mpa_v2_params;
1016 pr_debug("ep %p tid %u pd_len %d\n",
1017 ep, ep->hwtid, ep->plen);
1019 mpalen = sizeof(*mpa) + plen;
1020 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn)
1021 mpalen += sizeof(struct mpa_v2_conn_params);
1022 wrlen = roundup(mpalen + sizeof *req, 16);
1024 skb = get_skb(NULL, wrlen, GFP_KERNEL);
1026 pr_err("%s - cannot alloc skb!\n", __func__);
1029 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
1031 req = skb_put_zero(skb, wrlen);
1032 req->op_to_immdlen = cpu_to_be32(
1033 FW_WR_OP_V(FW_OFLD_TX_DATA_WR) |
1035 FW_WR_IMMDLEN_V(mpalen));
1036 req->flowid_len16 = cpu_to_be32(
1037 FW_WR_FLOWID_V(ep->hwtid) |
1038 FW_WR_LEN16_V(wrlen >> 4));
1039 req->plen = cpu_to_be32(mpalen);
1040 req->tunnel_to_proxy = cpu_to_be32(
1041 FW_OFLD_TX_DATA_WR_FLUSH_F |
1042 FW_OFLD_TX_DATA_WR_SHOVE_F);
1044 mpa = (struct mpa_message *)(req + 1);
1045 memset(mpa, 0, sizeof(*mpa));
1046 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key));
1047 mpa->flags = MPA_REJECT;
1048 mpa->revision = ep->mpa_attr.version;
1049 mpa->private_data_size = htons(plen);
1051 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
1052 mpa->flags |= MPA_ENHANCED_RDMA_CONN;
1053 mpa->private_data_size = htons(ntohs(mpa->private_data_size) +
1054 sizeof (struct mpa_v2_conn_params));
1055 mpa_v2_params.ird = htons(((u16)ep->ird) |
1056 (peer2peer ? MPA_V2_PEER2PEER_MODEL :
1058 mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ?
1060 FW_RI_INIT_P2PTYPE_RDMA_WRITE ?
1061 MPA_V2_RDMA_WRITE_RTR : p2p_type ==
1062 FW_RI_INIT_P2PTYPE_READ_REQ ?
1063 MPA_V2_RDMA_READ_RTR : 0) : 0));
1064 memcpy(mpa->private_data, &mpa_v2_params,
1065 sizeof(struct mpa_v2_conn_params));
1068 memcpy(mpa->private_data +
1069 sizeof(struct mpa_v2_conn_params), pdata, plen);
1072 memcpy(mpa->private_data, pdata, plen);
1075 * Reference the mpa skb again. This ensures the data area
1076 * will remain in memory until the hw acks the tx.
1077 * Function fw4_ack() will deref it.
1080 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
1081 t4_set_arp_err_handler(skb, NULL, mpa_start_arp_failure);
1083 ep->snd_seq += mpalen;
1084 return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
1087 static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen)
1090 struct fw_ofld_tx_data_wr *req;
1091 struct mpa_message *mpa;
1092 struct sk_buff *skb;
1093 struct mpa_v2_conn_params mpa_v2_params;
1095 pr_debug("ep %p tid %u pd_len %d\n",
1096 ep, ep->hwtid, ep->plen);
1098 mpalen = sizeof(*mpa) + plen;
1099 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn)
1100 mpalen += sizeof(struct mpa_v2_conn_params);
1101 wrlen = roundup(mpalen + sizeof *req, 16);
1103 skb = get_skb(NULL, wrlen, GFP_KERNEL);
1105 pr_err("%s - cannot alloc skb!\n", __func__);
1108 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
1110 req = skb_put_zero(skb, wrlen);
1111 req->op_to_immdlen = cpu_to_be32(
1112 FW_WR_OP_V(FW_OFLD_TX_DATA_WR) |
1114 FW_WR_IMMDLEN_V(mpalen));
1115 req->flowid_len16 = cpu_to_be32(
1116 FW_WR_FLOWID_V(ep->hwtid) |
1117 FW_WR_LEN16_V(wrlen >> 4));
1118 req->plen = cpu_to_be32(mpalen);
1119 req->tunnel_to_proxy = cpu_to_be32(
1120 FW_OFLD_TX_DATA_WR_FLUSH_F |
1121 FW_OFLD_TX_DATA_WR_SHOVE_F);
1123 mpa = (struct mpa_message *)(req + 1);
1124 memset(mpa, 0, sizeof(*mpa));
1125 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key));
1127 if (ep->mpa_attr.crc_enabled)
1128 mpa->flags |= MPA_CRC;
1129 if (ep->mpa_attr.recv_marker_enabled)
1130 mpa->flags |= MPA_MARKERS;
1131 mpa->revision = ep->mpa_attr.version;
1132 mpa->private_data_size = htons(plen);
1134 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
1135 mpa->flags |= MPA_ENHANCED_RDMA_CONN;
1136 mpa->private_data_size = htons(ntohs(mpa->private_data_size) +
1137 sizeof (struct mpa_v2_conn_params));
1138 mpa_v2_params.ird = htons((u16)ep->ird);
1139 mpa_v2_params.ord = htons((u16)ep->ord);
1140 if (peer2peer && (ep->mpa_attr.p2p_type !=
1141 FW_RI_INIT_P2PTYPE_DISABLED)) {
1142 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL);
1144 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE)
1145 mpa_v2_params.ord |=
1146 htons(MPA_V2_RDMA_WRITE_RTR);
1147 else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ)
1148 mpa_v2_params.ord |=
1149 htons(MPA_V2_RDMA_READ_RTR);
1152 memcpy(mpa->private_data, &mpa_v2_params,
1153 sizeof(struct mpa_v2_conn_params));
1156 memcpy(mpa->private_data +
1157 sizeof(struct mpa_v2_conn_params), pdata, plen);
1160 memcpy(mpa->private_data, pdata, plen);
1163 * Reference the mpa skb. This ensures the data area
1164 * will remain in memory until the hw acks the tx.
1165 * Function fw4_ack() will deref it.
1168 t4_set_arp_err_handler(skb, NULL, mpa_start_arp_failure);
1170 __state_set(&ep->com, MPA_REP_SENT);
1171 ep->snd_seq += mpalen;
1172 return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
1175 static int act_establish(struct c4iw_dev *dev, struct sk_buff *skb)
1178 struct cpl_act_establish *req = cplhdr(skb);
1179 unsigned int tid = GET_TID(req);
1180 unsigned int atid = TID_TID_G(ntohl(req->tos_atid));
1181 struct tid_info *t = dev->rdev.lldi.tids;
1184 ep = lookup_atid(t, atid);
1186 pr_debug("ep %p tid %u snd_isn %u rcv_isn %u\n", ep, tid,
1187 be32_to_cpu(req->snd_isn), be32_to_cpu(req->rcv_isn));
1189 mutex_lock(&ep->com.mutex);
1190 dst_confirm(ep->dst);
1192 /* setup the hwtid for this connection */
1194 cxgb4_insert_tid(t, ep, tid, ep->com.local_addr.ss_family);
1197 ep->snd_seq = be32_to_cpu(req->snd_isn);
1198 ep->rcv_seq = be32_to_cpu(req->rcv_isn);
1200 set_emss(ep, ntohs(req->tcp_opt));
1202 /* dealloc the atid */
1203 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, atid);
1204 cxgb4_free_atid(t, atid);
1205 set_bit(ACT_ESTAB, &ep->com.history);
1207 /* start MPA negotiation */
1208 ret = send_flowc(ep);
1211 if (ep->retry_with_mpa_v1)
1212 ret = send_mpa_req(ep, skb, 1);
1214 ret = send_mpa_req(ep, skb, mpa_rev);
1217 mutex_unlock(&ep->com.mutex);
1220 mutex_unlock(&ep->com.mutex);
1221 connect_reply_upcall(ep, -ENOMEM);
1222 c4iw_ep_disconnect(ep, 0, GFP_KERNEL);
1226 static void close_complete_upcall(struct c4iw_ep *ep, int status)
1228 struct iw_cm_event event;
1230 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
1231 memset(&event, 0, sizeof(event));
1232 event.event = IW_CM_EVENT_CLOSE;
1233 event.status = status;
1234 if (ep->com.cm_id) {
1235 pr_debug("close complete delivered ep %p cm_id %p tid %u\n",
1236 ep, ep->com.cm_id, ep->hwtid);
1237 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1238 deref_cm_id(&ep->com);
1239 set_bit(CLOSE_UPCALL, &ep->com.history);
1243 static void peer_close_upcall(struct c4iw_ep *ep)
1245 struct iw_cm_event event;
1247 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
1248 memset(&event, 0, sizeof(event));
1249 event.event = IW_CM_EVENT_DISCONNECT;
1250 if (ep->com.cm_id) {
1251 pr_debug("peer close delivered ep %p cm_id %p tid %u\n",
1252 ep, ep->com.cm_id, ep->hwtid);
1253 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1254 set_bit(DISCONN_UPCALL, &ep->com.history);
1258 static void peer_abort_upcall(struct c4iw_ep *ep)
1260 struct iw_cm_event event;
1262 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
1263 memset(&event, 0, sizeof(event));
1264 event.event = IW_CM_EVENT_CLOSE;
1265 event.status = -ECONNRESET;
1266 if (ep->com.cm_id) {
1267 pr_debug("abort delivered ep %p cm_id %p tid %u\n", ep,
1268 ep->com.cm_id, ep->hwtid);
1269 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1270 deref_cm_id(&ep->com);
1271 set_bit(ABORT_UPCALL, &ep->com.history);
1275 static void connect_reply_upcall(struct c4iw_ep *ep, int status)
1277 struct iw_cm_event event;
1279 pr_debug("ep %p tid %u status %d\n",
1280 ep, ep->hwtid, status);
1281 memset(&event, 0, sizeof(event));
1282 event.event = IW_CM_EVENT_CONNECT_REPLY;
1283 event.status = status;
1284 memcpy(&event.local_addr, &ep->com.local_addr,
1285 sizeof(ep->com.local_addr));
1286 memcpy(&event.remote_addr, &ep->com.remote_addr,
1287 sizeof(ep->com.remote_addr));
1289 if ((status == 0) || (status == -ECONNREFUSED)) {
1290 if (!ep->tried_with_mpa_v1) {
1291 /* this means MPA_v2 is used */
1292 event.ord = ep->ird;
1293 event.ird = ep->ord;
1294 event.private_data_len = ep->plen -
1295 sizeof(struct mpa_v2_conn_params);
1296 event.private_data = ep->mpa_pkt +
1297 sizeof(struct mpa_message) +
1298 sizeof(struct mpa_v2_conn_params);
1300 /* this means MPA_v1 is used */
1301 event.ord = cur_max_read_depth(ep->com.dev);
1302 event.ird = cur_max_read_depth(ep->com.dev);
1303 event.private_data_len = ep->plen;
1304 event.private_data = ep->mpa_pkt +
1305 sizeof(struct mpa_message);
1309 pr_debug("ep %p tid %u status %d\n", ep,
1311 set_bit(CONN_RPL_UPCALL, &ep->com.history);
1312 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1315 deref_cm_id(&ep->com);
1318 static int connect_request_upcall(struct c4iw_ep *ep)
1320 struct iw_cm_event event;
1323 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
1324 memset(&event, 0, sizeof(event));
1325 event.event = IW_CM_EVENT_CONNECT_REQUEST;
1326 memcpy(&event.local_addr, &ep->com.local_addr,
1327 sizeof(ep->com.local_addr));
1328 memcpy(&event.remote_addr, &ep->com.remote_addr,
1329 sizeof(ep->com.remote_addr));
1330 event.provider_data = ep;
1331 if (!ep->tried_with_mpa_v1) {
1332 /* this means MPA_v2 is used */
1333 event.ord = ep->ord;
1334 event.ird = ep->ird;
1335 event.private_data_len = ep->plen -
1336 sizeof(struct mpa_v2_conn_params);
1337 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) +
1338 sizeof(struct mpa_v2_conn_params);
1340 /* this means MPA_v1 is used. Send max supported */
1341 event.ord = cur_max_read_depth(ep->com.dev);
1342 event.ird = cur_max_read_depth(ep->com.dev);
1343 event.private_data_len = ep->plen;
1344 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message);
1346 c4iw_get_ep(&ep->com);
1347 ret = ep->parent_ep->com.cm_id->event_handler(ep->parent_ep->com.cm_id,
1350 c4iw_put_ep(&ep->com);
1351 set_bit(CONNREQ_UPCALL, &ep->com.history);
1352 c4iw_put_ep(&ep->parent_ep->com);
1356 static void established_upcall(struct c4iw_ep *ep)
1358 struct iw_cm_event event;
1360 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
1361 memset(&event, 0, sizeof(event));
1362 event.event = IW_CM_EVENT_ESTABLISHED;
1363 event.ird = ep->ord;
1364 event.ord = ep->ird;
1365 if (ep->com.cm_id) {
1366 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
1367 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1368 set_bit(ESTAB_UPCALL, &ep->com.history);
1372 static int update_rx_credits(struct c4iw_ep *ep, u32 credits)
1374 struct sk_buff *skb;
1375 u32 wrlen = roundup(sizeof(struct cpl_rx_data_ack), 16);
1378 pr_debug("ep %p tid %u credits %u\n",
1379 ep, ep->hwtid, credits);
1380 skb = get_skb(NULL, wrlen, GFP_KERNEL);
1382 pr_err("update_rx_credits - cannot alloc skb!\n");
1387 * If we couldn't specify the entire rcv window at connection setup
1388 * due to the limit in the number of bits in the RCV_BUFSIZ field,
1389 * then add the overage in to the credits returned.
1391 if (ep->rcv_win > RCV_BUFSIZ_M * 1024)
1392 credits += ep->rcv_win - RCV_BUFSIZ_M * 1024;
1394 credit_dack = credits | RX_FORCE_ACK_F | RX_DACK_CHANGE_F |
1395 RX_DACK_MODE_V(dack_mode);
1397 cxgb_mk_rx_data_ack(skb, wrlen, ep->hwtid, ep->ctrlq_idx,
1400 c4iw_ofld_send(&ep->com.dev->rdev, skb);
1404 #define RELAXED_IRD_NEGOTIATION 1
1407 * process_mpa_reply - process streaming mode MPA reply
1411 * 0 upon success indicating a connect request was delivered to the ULP
1412 * or the mpa request is incomplete but valid so far.
1414 * 1 if a failure requires the caller to close the connection.
1416 * 2 if a failure requires the caller to abort the connection.
1418 static int process_mpa_reply(struct c4iw_ep *ep, struct sk_buff *skb)
1420 struct mpa_message *mpa;
1421 struct mpa_v2_conn_params *mpa_v2_params;
1423 u16 resp_ird, resp_ord;
1424 u8 rtr_mismatch = 0, insuff_ird = 0;
1425 struct c4iw_qp_attributes attrs;
1426 enum c4iw_qp_attr_mask mask;
1430 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
1433 * If we get more than the supported amount of private data
1434 * then we must fail this connection.
1436 if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) {
1438 goto err_stop_timer;
1442 * copy the new data into our accumulation buffer.
1444 skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]),
1446 ep->mpa_pkt_len += skb->len;
1449 * if we don't even have the mpa message, then bail.
1451 if (ep->mpa_pkt_len < sizeof(*mpa))
1453 mpa = (struct mpa_message *) ep->mpa_pkt;
1455 /* Validate MPA header. */
1456 if (mpa->revision > mpa_rev) {
1457 pr_err("%s MPA version mismatch. Local = %d, Received = %d\n",
1458 __func__, mpa_rev, mpa->revision);
1460 goto err_stop_timer;
1462 if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) {
1464 goto err_stop_timer;
1467 plen = ntohs(mpa->private_data_size);
1470 * Fail if there's too much private data.
1472 if (plen > MPA_MAX_PRIVATE_DATA) {
1474 goto err_stop_timer;
1478 * If plen does not account for pkt size
1480 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) {
1482 goto err_stop_timer;
1485 ep->plen = (u8) plen;
1488 * If we don't have all the pdata yet, then bail.
1489 * We'll continue process when more data arrives.
1491 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen))
1494 if (mpa->flags & MPA_REJECT) {
1495 err = -ECONNREFUSED;
1496 goto err_stop_timer;
1500 * Stop mpa timer. If it expired, then
1501 * we ignore the MPA reply. process_timeout()
1502 * will abort the connection.
1504 if (stop_ep_timer(ep))
1508 * If we get here we have accumulated the entire mpa
1509 * start reply message including private data. And
1510 * the MPA header is valid.
1512 __state_set(&ep->com, FPDU_MODE);
1513 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0;
1514 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0;
1515 ep->mpa_attr.version = mpa->revision;
1516 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
1518 if (mpa->revision == 2) {
1519 ep->mpa_attr.enhanced_rdma_conn =
1520 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0;
1521 if (ep->mpa_attr.enhanced_rdma_conn) {
1522 mpa_v2_params = (struct mpa_v2_conn_params *)
1523 (ep->mpa_pkt + sizeof(*mpa));
1524 resp_ird = ntohs(mpa_v2_params->ird) &
1525 MPA_V2_IRD_ORD_MASK;
1526 resp_ord = ntohs(mpa_v2_params->ord) &
1527 MPA_V2_IRD_ORD_MASK;
1528 pr_debug("responder ird %u ord %u ep ird %u ord %u\n",
1529 resp_ird, resp_ord, ep->ird, ep->ord);
1532 * This is a double-check. Ideally, below checks are
1533 * not required since ird/ord stuff has been taken
1534 * care of in c4iw_accept_cr
1536 if (ep->ird < resp_ord) {
1537 if (RELAXED_IRD_NEGOTIATION && resp_ord <=
1538 ep->com.dev->rdev.lldi.max_ordird_qp)
1542 } else if (ep->ird > resp_ord) {
1545 if (ep->ord > resp_ird) {
1546 if (RELAXED_IRD_NEGOTIATION)
1557 if (ntohs(mpa_v2_params->ird) &
1558 MPA_V2_PEER2PEER_MODEL) {
1559 if (ntohs(mpa_v2_params->ord) &
1560 MPA_V2_RDMA_WRITE_RTR)
1561 ep->mpa_attr.p2p_type =
1562 FW_RI_INIT_P2PTYPE_RDMA_WRITE;
1563 else if (ntohs(mpa_v2_params->ord) &
1564 MPA_V2_RDMA_READ_RTR)
1565 ep->mpa_attr.p2p_type =
1566 FW_RI_INIT_P2PTYPE_READ_REQ;
1569 } else if (mpa->revision == 1)
1571 ep->mpa_attr.p2p_type = p2p_type;
1573 pr_debug("crc_enabled=%d, recv_marker_enabled=%d, xmit_marker_enabled=%d, version=%d p2p_type=%d local-p2p_type = %d\n",
1574 ep->mpa_attr.crc_enabled,
1575 ep->mpa_attr.recv_marker_enabled,
1576 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version,
1577 ep->mpa_attr.p2p_type, p2p_type);
1580 * If responder's RTR does not match with that of initiator, assign
1581 * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not
1582 * generated when moving QP to RTS state.
1583 * A TERM message will be sent after QP has moved to RTS state
1585 if ((ep->mpa_attr.version == 2) && peer2peer &&
1586 (ep->mpa_attr.p2p_type != p2p_type)) {
1587 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
1591 attrs.mpa_attr = ep->mpa_attr;
1592 attrs.max_ird = ep->ird;
1593 attrs.max_ord = ep->ord;
1594 attrs.llp_stream_handle = ep;
1595 attrs.next_state = C4IW_QP_STATE_RTS;
1597 mask = C4IW_QP_ATTR_NEXT_STATE |
1598 C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR |
1599 C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD;
1601 /* bind QP and TID with INIT_WR */
1602 err = c4iw_modify_qp(ep->com.qp->rhp,
1603 ep->com.qp, mask, &attrs, 1);
1608 * If responder's RTR requirement did not match with what initiator
1609 * supports, generate TERM message
1612 pr_err("%s: RTR mismatch, sending TERM\n", __func__);
1613 attrs.layer_etype = LAYER_MPA | DDP_LLP;
1614 attrs.ecode = MPA_NOMATCH_RTR;
1615 attrs.next_state = C4IW_QP_STATE_TERMINATE;
1616 attrs.send_term = 1;
1617 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
1618 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
1625 * Generate TERM if initiator IRD is not sufficient for responder
1626 * provided ORD. Currently, we do the same behaviour even when
1627 * responder provided IRD is also not sufficient as regards to
1631 pr_err("%s: Insufficient IRD, sending TERM\n", __func__);
1632 attrs.layer_etype = LAYER_MPA | DDP_LLP;
1633 attrs.ecode = MPA_INSUFF_IRD;
1634 attrs.next_state = C4IW_QP_STATE_TERMINATE;
1635 attrs.send_term = 1;
1636 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
1637 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
1648 connect_reply_upcall(ep, err);
1653 * process_mpa_request - process streaming mode MPA request
1657 * 0 upon success indicating a connect request was delivered to the ULP
1658 * or the mpa request is incomplete but valid so far.
1660 * 1 if a failure requires the caller to close the connection.
1662 * 2 if a failure requires the caller to abort the connection.
1664 static int process_mpa_request(struct c4iw_ep *ep, struct sk_buff *skb)
1666 struct mpa_message *mpa;
1667 struct mpa_v2_conn_params *mpa_v2_params;
1670 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
1673 * If we get more than the supported amount of private data
1674 * then we must fail this connection.
1676 if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt))
1677 goto err_stop_timer;
1679 pr_debug("enter (%s line %u)\n", __FILE__, __LINE__);
1682 * Copy the new data into our accumulation buffer.
1684 skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]),
1686 ep->mpa_pkt_len += skb->len;
1689 * If we don't even have the mpa message, then bail.
1690 * We'll continue process when more data arrives.
1692 if (ep->mpa_pkt_len < sizeof(*mpa))
1695 pr_debug("enter (%s line %u)\n", __FILE__, __LINE__);
1696 mpa = (struct mpa_message *) ep->mpa_pkt;
1699 * Validate MPA Header.
1701 if (mpa->revision > mpa_rev) {
1702 pr_err("%s MPA version mismatch. Local = %d, Received = %d\n",
1703 __func__, mpa_rev, mpa->revision);
1704 goto err_stop_timer;
1707 if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)))
1708 goto err_stop_timer;
1710 plen = ntohs(mpa->private_data_size);
1713 * Fail if there's too much private data.
1715 if (plen > MPA_MAX_PRIVATE_DATA)
1716 goto err_stop_timer;
1719 * If plen does not account for pkt size
1721 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen))
1722 goto err_stop_timer;
1723 ep->plen = (u8) plen;
1726 * If we don't have all the pdata yet, then bail.
1728 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen))
1732 * If we get here we have accumulated the entire mpa
1733 * start reply message including private data.
1735 ep->mpa_attr.initiator = 0;
1736 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0;
1737 ep->mpa_attr.recv_marker_enabled = markers_enabled;
1738 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0;
1739 ep->mpa_attr.version = mpa->revision;
1740 if (mpa->revision == 1)
1741 ep->tried_with_mpa_v1 = 1;
1742 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
1744 if (mpa->revision == 2) {
1745 ep->mpa_attr.enhanced_rdma_conn =
1746 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0;
1747 if (ep->mpa_attr.enhanced_rdma_conn) {
1748 mpa_v2_params = (struct mpa_v2_conn_params *)
1749 (ep->mpa_pkt + sizeof(*mpa));
1750 ep->ird = ntohs(mpa_v2_params->ird) &
1751 MPA_V2_IRD_ORD_MASK;
1752 ep->ird = min_t(u32, ep->ird,
1753 cur_max_read_depth(ep->com.dev));
1754 ep->ord = ntohs(mpa_v2_params->ord) &
1755 MPA_V2_IRD_ORD_MASK;
1756 ep->ord = min_t(u32, ep->ord,
1757 cur_max_read_depth(ep->com.dev));
1758 pr_debug("initiator ird %u ord %u\n",
1760 if (ntohs(mpa_v2_params->ird) & MPA_V2_PEER2PEER_MODEL)
1762 if (ntohs(mpa_v2_params->ord) &
1763 MPA_V2_RDMA_WRITE_RTR)
1764 ep->mpa_attr.p2p_type =
1765 FW_RI_INIT_P2PTYPE_RDMA_WRITE;
1766 else if (ntohs(mpa_v2_params->ord) &
1767 MPA_V2_RDMA_READ_RTR)
1768 ep->mpa_attr.p2p_type =
1769 FW_RI_INIT_P2PTYPE_READ_REQ;
1772 } else if (mpa->revision == 1)
1774 ep->mpa_attr.p2p_type = p2p_type;
1776 pr_debug("crc_enabled=%d, recv_marker_enabled=%d, xmit_marker_enabled=%d, version=%d p2p_type=%d\n",
1777 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled,
1778 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version,
1779 ep->mpa_attr.p2p_type);
1781 __state_set(&ep->com, MPA_REQ_RCVD);
1784 mutex_lock_nested(&ep->parent_ep->com.mutex, SINGLE_DEPTH_NESTING);
1785 if (ep->parent_ep->com.state != DEAD) {
1786 if (connect_request_upcall(ep))
1787 goto err_unlock_parent;
1789 goto err_unlock_parent;
1791 mutex_unlock(&ep->parent_ep->com.mutex);
1795 mutex_unlock(&ep->parent_ep->com.mutex);
1798 (void)stop_ep_timer(ep);
1803 static int rx_data(struct c4iw_dev *dev, struct sk_buff *skb)
1806 struct cpl_rx_data *hdr = cplhdr(skb);
1807 unsigned int dlen = ntohs(hdr->len);
1808 unsigned int tid = GET_TID(hdr);
1809 __u8 status = hdr->status;
1812 ep = get_ep_from_tid(dev, tid);
1815 pr_debug("ep %p tid %u dlen %u\n", ep, ep->hwtid, dlen);
1816 skb_pull(skb, sizeof(*hdr));
1817 skb_trim(skb, dlen);
1818 mutex_lock(&ep->com.mutex);
1820 switch (ep->com.state) {
1822 update_rx_credits(ep, dlen);
1823 ep->rcv_seq += dlen;
1824 disconnect = process_mpa_reply(ep, skb);
1827 update_rx_credits(ep, dlen);
1828 ep->rcv_seq += dlen;
1829 disconnect = process_mpa_request(ep, skb);
1832 struct c4iw_qp_attributes attrs;
1834 update_rx_credits(ep, dlen);
1836 pr_err("%s Unexpected streaming data." \
1837 " qpid %u ep %p state %d tid %u status %d\n",
1838 __func__, ep->com.qp->wq.sq.qid, ep,
1839 ep->com.state, ep->hwtid, status);
1840 attrs.next_state = C4IW_QP_STATE_TERMINATE;
1841 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
1842 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
1849 mutex_unlock(&ep->com.mutex);
1851 c4iw_ep_disconnect(ep, disconnect == 2, GFP_KERNEL);
1852 c4iw_put_ep(&ep->com);
1856 static int abort_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
1859 struct cpl_abort_rpl_rss *rpl = cplhdr(skb);
1861 unsigned int tid = GET_TID(rpl);
1863 ep = get_ep_from_tid(dev, tid);
1865 pr_warn("Abort rpl to freed endpoint\n");
1868 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
1869 mutex_lock(&ep->com.mutex);
1870 switch (ep->com.state) {
1872 c4iw_wake_up_noref(ep->com.wr_waitp, -ECONNRESET);
1873 __state_set(&ep->com, DEAD);
1877 pr_err("%s ep %p state %d\n", __func__, ep, ep->com.state);
1880 mutex_unlock(&ep->com.mutex);
1883 release_ep_resources(ep);
1884 c4iw_put_ep(&ep->com);
1888 static int send_fw_act_open_req(struct c4iw_ep *ep, unsigned int atid)
1890 struct sk_buff *skb;
1891 struct fw_ofld_connection_wr *req;
1892 unsigned int mtu_idx;
1894 struct sockaddr_in *sin;
1897 skb = get_skb(NULL, sizeof(*req), GFP_KERNEL);
1898 req = __skb_put_zero(skb, sizeof(*req));
1899 req->op_compl = htonl(WR_OP_V(FW_OFLD_CONNECTION_WR));
1900 req->len16_pkd = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*req), 16)));
1901 req->le.filter = cpu_to_be32(cxgb4_select_ntuple(
1902 ep->com.dev->rdev.lldi.ports[0],
1904 sin = (struct sockaddr_in *)&ep->com.local_addr;
1905 req->le.lport = sin->sin_port;
1906 req->le.u.ipv4.lip = sin->sin_addr.s_addr;
1907 sin = (struct sockaddr_in *)&ep->com.remote_addr;
1908 req->le.pport = sin->sin_port;
1909 req->le.u.ipv4.pip = sin->sin_addr.s_addr;
1910 req->tcb.t_state_to_astid =
1911 htonl(FW_OFLD_CONNECTION_WR_T_STATE_V(TCP_SYN_SENT) |
1912 FW_OFLD_CONNECTION_WR_ASTID_V(atid));
1913 req->tcb.cplrxdataack_cplpassacceptrpl =
1914 htons(FW_OFLD_CONNECTION_WR_CPLRXDATAACK_F);
1915 req->tcb.tx_max = (__force __be32) jiffies;
1916 req->tcb.rcv_adv = htons(1);
1917 cxgb_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx,
1918 enable_tcp_timestamps,
1919 (ep->com.remote_addr.ss_family == AF_INET) ? 0 : 1);
1920 wscale = cxgb_compute_wscale(rcv_win);
1923 * Specify the largest window that will fit in opt0. The
1924 * remainder will be specified in the rx_data_ack.
1926 win = ep->rcv_win >> 10;
1927 if (win > RCV_BUFSIZ_M)
1930 req->tcb.opt0 = (__force __be64) (TCAM_BYPASS_F |
1931 (nocong ? NO_CONG_F : 0) |
1934 WND_SCALE_V(wscale) |
1935 MSS_IDX_V(mtu_idx) |
1936 L2T_IDX_V(ep->l2t->idx) |
1937 TX_CHAN_V(ep->tx_chan) |
1938 SMAC_SEL_V(ep->smac_idx) |
1939 DSCP_V(ep->tos >> 2) |
1940 ULP_MODE_V(ULP_MODE_TCPDDP) |
1942 req->tcb.opt2 = (__force __be32) (PACE_V(1) |
1943 TX_QUEUE_V(ep->com.dev->rdev.lldi.tx_modq[ep->tx_chan]) |
1945 CCTRL_ECN_V(enable_ecn) |
1946 RSS_QUEUE_VALID_F | RSS_QUEUE_V(ep->rss_qid));
1947 if (enable_tcp_timestamps)
1948 req->tcb.opt2 |= (__force __be32)TSTAMPS_EN_F;
1949 if (enable_tcp_sack)
1950 req->tcb.opt2 |= (__force __be32)SACK_EN_F;
1951 if (wscale && enable_tcp_window_scaling)
1952 req->tcb.opt2 |= (__force __be32)WND_SCALE_EN_F;
1953 req->tcb.opt0 = cpu_to_be64((__force u64)req->tcb.opt0);
1954 req->tcb.opt2 = cpu_to_be32((__force u32)req->tcb.opt2);
1955 set_wr_txq(skb, CPL_PRIORITY_CONTROL, ep->ctrlq_idx);
1956 set_bit(ACT_OFLD_CONN, &ep->com.history);
1957 return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
1961 * Some of the error codes above implicitly indicate that there is no TID
1962 * allocated with the result of an ACT_OPEN. We use this predicate to make
1965 static inline int act_open_has_tid(int status)
1967 return (status != CPL_ERR_TCAM_PARITY &&
1968 status != CPL_ERR_TCAM_MISS &&
1969 status != CPL_ERR_TCAM_FULL &&
1970 status != CPL_ERR_CONN_EXIST_SYNRECV &&
1971 status != CPL_ERR_CONN_EXIST);
1974 static char *neg_adv_str(unsigned int status)
1977 case CPL_ERR_RTX_NEG_ADVICE:
1978 return "Retransmit timeout";
1979 case CPL_ERR_PERSIST_NEG_ADVICE:
1980 return "Persist timeout";
1981 case CPL_ERR_KEEPALV_NEG_ADVICE:
1982 return "Keepalive timeout";
1988 static void set_tcp_window(struct c4iw_ep *ep, struct port_info *pi)
1990 ep->snd_win = snd_win;
1991 ep->rcv_win = rcv_win;
1992 pr_debug("snd_win %d rcv_win %d\n",
1993 ep->snd_win, ep->rcv_win);
1996 #define ACT_OPEN_RETRY_COUNT 2
1998 static int import_ep(struct c4iw_ep *ep, int iptype, __u8 *peer_ip,
1999 struct dst_entry *dst, struct c4iw_dev *cdev,
2000 bool clear_mpa_v1, enum chip_type adapter_type, u8 tos)
2002 struct neighbour *n;
2004 struct net_device *pdev;
2006 n = dst_neigh_lookup(dst, peer_ip);
2012 if (n->dev->flags & IFF_LOOPBACK) {
2014 pdev = ip_dev_find(&init_net, *(__be32 *)peer_ip);
2015 else if (IS_ENABLED(CONFIG_IPV6))
2016 for_each_netdev(&init_net, pdev) {
2017 if (ipv6_chk_addr(&init_net,
2018 (struct in6_addr *)peer_ip,
2029 ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t,
2030 n, pdev, rt_tos2priority(tos));
2035 ep->mtu = pdev->mtu;
2036 ep->tx_chan = cxgb4_port_chan(pdev);
2037 ep->smac_idx = cxgb4_tp_smt_idx(adapter_type,
2038 cxgb4_port_viid(pdev));
2039 step = cdev->rdev.lldi.ntxq /
2040 cdev->rdev.lldi.nchan;
2041 ep->txq_idx = cxgb4_port_idx(pdev) * step;
2042 step = cdev->rdev.lldi.nrxq /
2043 cdev->rdev.lldi.nchan;
2044 ep->ctrlq_idx = cxgb4_port_idx(pdev);
2045 ep->rss_qid = cdev->rdev.lldi.rxq_ids[
2046 cxgb4_port_idx(pdev) * step];
2047 set_tcp_window(ep, (struct port_info *)netdev_priv(pdev));
2050 pdev = get_real_dev(n->dev);
2051 ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t,
2055 ep->mtu = dst_mtu(dst);
2056 ep->tx_chan = cxgb4_port_chan(pdev);
2057 ep->smac_idx = cxgb4_tp_smt_idx(adapter_type,
2058 cxgb4_port_viid(pdev));
2059 step = cdev->rdev.lldi.ntxq /
2060 cdev->rdev.lldi.nchan;
2061 ep->txq_idx = cxgb4_port_idx(pdev) * step;
2062 ep->ctrlq_idx = cxgb4_port_idx(pdev);
2063 step = cdev->rdev.lldi.nrxq /
2064 cdev->rdev.lldi.nchan;
2065 ep->rss_qid = cdev->rdev.lldi.rxq_ids[
2066 cxgb4_port_idx(pdev) * step];
2067 set_tcp_window(ep, (struct port_info *)netdev_priv(pdev));
2070 ep->retry_with_mpa_v1 = 0;
2071 ep->tried_with_mpa_v1 = 0;
2083 static int c4iw_reconnect(struct c4iw_ep *ep)
2087 struct sockaddr_in *laddr = (struct sockaddr_in *)
2088 &ep->com.cm_id->m_local_addr;
2089 struct sockaddr_in *raddr = (struct sockaddr_in *)
2090 &ep->com.cm_id->m_remote_addr;
2091 struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *)
2092 &ep->com.cm_id->m_local_addr;
2093 struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)
2094 &ep->com.cm_id->m_remote_addr;
2098 pr_debug("qp %p cm_id %p\n", ep->com.qp, ep->com.cm_id);
2099 c4iw_init_wr_wait(ep->com.wr_waitp);
2101 /* When MPA revision is different on nodes, the node with MPA_rev=2
2102 * tries to reconnect with MPA_rev 1 for the same EP through
2103 * c4iw_reconnect(), where the same EP is assigned with new tid for
2104 * further connection establishment. As we are using the same EP pointer
2105 * for reconnect, few skbs are used during the previous c4iw_connect(),
2106 * which leaves the EP with inadequate skbs for further
2107 * c4iw_reconnect(), Further causing a crash due to an empty
2108 * skb_list() during peer_abort(). Allocate skbs which is already used.
2110 size = (CN_MAX_CON_BUF - skb_queue_len(&ep->com.ep_skb_list));
2111 if (alloc_ep_skb_list(&ep->com.ep_skb_list, size)) {
2117 * Allocate an active TID to initiate a TCP connection.
2119 ep->atid = cxgb4_alloc_atid(ep->com.dev->rdev.lldi.tids, ep);
2120 if (ep->atid == -1) {
2121 pr_err("%s - cannot alloc atid\n", __func__);
2125 insert_handle(ep->com.dev, &ep->com.dev->atid_idr, ep, ep->atid);
2128 if (ep->com.cm_id->m_local_addr.ss_family == AF_INET) {
2129 ep->dst = cxgb_find_route(&ep->com.dev->rdev.lldi, get_real_dev,
2130 laddr->sin_addr.s_addr,
2131 raddr->sin_addr.s_addr,
2133 raddr->sin_port, ep->com.cm_id->tos);
2135 ra = (__u8 *)&raddr->sin_addr;
2137 ep->dst = cxgb_find_route6(&ep->com.dev->rdev.lldi,
2139 laddr6->sin6_addr.s6_addr,
2140 raddr6->sin6_addr.s6_addr,
2142 raddr6->sin6_port, 0,
2143 raddr6->sin6_scope_id);
2145 ra = (__u8 *)&raddr6->sin6_addr;
2148 pr_err("%s - cannot find route\n", __func__);
2149 err = -EHOSTUNREACH;
2152 err = import_ep(ep, iptype, ra, ep->dst, ep->com.dev, false,
2153 ep->com.dev->rdev.lldi.adapter_type,
2154 ep->com.cm_id->tos);
2156 pr_err("%s - cannot alloc l2e\n", __func__);
2160 pr_debug("txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n",
2161 ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid,
2164 state_set(&ep->com, CONNECTING);
2165 ep->tos = ep->com.cm_id->tos;
2167 /* send connect request to rnic */
2168 err = send_connect(ep);
2172 cxgb4_l2t_release(ep->l2t);
2174 dst_release(ep->dst);
2176 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid);
2177 cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid);
2180 * remember to send notification to upper layer.
2181 * We are in here so the upper layer is not aware that this is
2182 * re-connect attempt and so, upper layer is still waiting for
2183 * response of 1st connect request.
2185 connect_reply_upcall(ep, -ECONNRESET);
2187 c4iw_put_ep(&ep->com);
2192 static int act_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
2195 struct cpl_act_open_rpl *rpl = cplhdr(skb);
2196 unsigned int atid = TID_TID_G(AOPEN_ATID_G(
2197 ntohl(rpl->atid_status)));
2198 struct tid_info *t = dev->rdev.lldi.tids;
2199 int status = AOPEN_STATUS_G(ntohl(rpl->atid_status));
2200 struct sockaddr_in *la;
2201 struct sockaddr_in *ra;
2202 struct sockaddr_in6 *la6;
2203 struct sockaddr_in6 *ra6;
2206 ep = lookup_atid(t, atid);
2207 la = (struct sockaddr_in *)&ep->com.local_addr;
2208 ra = (struct sockaddr_in *)&ep->com.remote_addr;
2209 la6 = (struct sockaddr_in6 *)&ep->com.local_addr;
2210 ra6 = (struct sockaddr_in6 *)&ep->com.remote_addr;
2212 pr_debug("ep %p atid %u status %u errno %d\n", ep, atid,
2213 status, status2errno(status));
2215 if (cxgb_is_neg_adv(status)) {
2216 pr_debug("Connection problems for atid %u status %u (%s)\n",
2217 atid, status, neg_adv_str(status));
2218 ep->stats.connect_neg_adv++;
2219 mutex_lock(&dev->rdev.stats.lock);
2220 dev->rdev.stats.neg_adv++;
2221 mutex_unlock(&dev->rdev.stats.lock);
2225 set_bit(ACT_OPEN_RPL, &ep->com.history);
2228 * Log interesting failures.
2231 case CPL_ERR_CONN_RESET:
2232 case CPL_ERR_CONN_TIMEDOUT:
2234 case CPL_ERR_TCAM_FULL:
2235 mutex_lock(&dev->rdev.stats.lock);
2236 dev->rdev.stats.tcam_full++;
2237 mutex_unlock(&dev->rdev.stats.lock);
2238 if (ep->com.local_addr.ss_family == AF_INET &&
2239 dev->rdev.lldi.enable_fw_ofld_conn) {
2240 ret = send_fw_act_open_req(ep, TID_TID_G(AOPEN_ATID_G(
2241 ntohl(rpl->atid_status))));
2247 case CPL_ERR_CONN_EXIST:
2248 if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) {
2249 set_bit(ACT_RETRY_INUSE, &ep->com.history);
2250 if (ep->com.remote_addr.ss_family == AF_INET6) {
2251 struct sockaddr_in6 *sin6 =
2252 (struct sockaddr_in6 *)
2253 &ep->com.local_addr;
2255 ep->com.dev->rdev.lldi.ports[0],
2257 &sin6->sin6_addr.s6_addr, 1);
2259 remove_handle(ep->com.dev, &ep->com.dev->atid_idr,
2261 cxgb4_free_atid(t, atid);
2262 dst_release(ep->dst);
2263 cxgb4_l2t_release(ep->l2t);
2269 if (ep->com.local_addr.ss_family == AF_INET) {
2270 pr_info("Active open failure - atid %u status %u errno %d %pI4:%u->%pI4:%u\n",
2271 atid, status, status2errno(status),
2272 &la->sin_addr.s_addr, ntohs(la->sin_port),
2273 &ra->sin_addr.s_addr, ntohs(ra->sin_port));
2275 pr_info("Active open failure - atid %u status %u errno %d %pI6:%u->%pI6:%u\n",
2276 atid, status, status2errno(status),
2277 la6->sin6_addr.s6_addr, ntohs(la6->sin6_port),
2278 ra6->sin6_addr.s6_addr, ntohs(ra6->sin6_port));
2284 connect_reply_upcall(ep, status2errno(status));
2285 state_set(&ep->com, DEAD);
2287 if (ep->com.remote_addr.ss_family == AF_INET6) {
2288 struct sockaddr_in6 *sin6 =
2289 (struct sockaddr_in6 *)&ep->com.local_addr;
2290 cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
2291 (const u32 *)&sin6->sin6_addr.s6_addr, 1);
2293 if (status && act_open_has_tid(status))
2294 cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, GET_TID(rpl),
2295 ep->com.local_addr.ss_family);
2297 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, atid);
2298 cxgb4_free_atid(t, atid);
2299 dst_release(ep->dst);
2300 cxgb4_l2t_release(ep->l2t);
2301 c4iw_put_ep(&ep->com);
2306 static int pass_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
2308 struct cpl_pass_open_rpl *rpl = cplhdr(skb);
2309 unsigned int stid = GET_TID(rpl);
2310 struct c4iw_listen_ep *ep = get_ep_from_stid(dev, stid);
2313 pr_warn("%s stid %d lookup failure!\n", __func__, stid);
2316 pr_debug("ep %p status %d error %d\n", ep,
2317 rpl->status, status2errno(rpl->status));
2318 c4iw_wake_up_noref(ep->com.wr_waitp, status2errno(rpl->status));
2319 c4iw_put_ep(&ep->com);
2324 static int close_listsrv_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
2326 struct cpl_close_listsvr_rpl *rpl = cplhdr(skb);
2327 unsigned int stid = GET_TID(rpl);
2328 struct c4iw_listen_ep *ep = get_ep_from_stid(dev, stid);
2331 pr_warn("%s stid %d lookup failure!\n", __func__, stid);
2334 pr_debug("ep %p\n", ep);
2335 c4iw_wake_up_noref(ep->com.wr_waitp, status2errno(rpl->status));
2336 c4iw_put_ep(&ep->com);
2341 static int accept_cr(struct c4iw_ep *ep, struct sk_buff *skb,
2342 struct cpl_pass_accept_req *req)
2344 struct cpl_pass_accept_rpl *rpl;
2345 unsigned int mtu_idx;
2349 struct cpl_t5_pass_accept_rpl *rpl5 = NULL;
2351 enum chip_type adapter_type = ep->com.dev->rdev.lldi.adapter_type;
2353 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
2357 if (!is_t4(adapter_type)) {
2358 skb_trim(skb, roundup(sizeof(*rpl5), 16));
2360 INIT_TP_WR(rpl5, ep->hwtid);
2362 skb_trim(skb, sizeof(*rpl));
2363 INIT_TP_WR(rpl, ep->hwtid);
2365 OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL,
2368 cxgb_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx,
2369 enable_tcp_timestamps && req->tcpopt.tstamp,
2370 (ep->com.remote_addr.ss_family == AF_INET) ? 0 : 1);
2371 wscale = cxgb_compute_wscale(rcv_win);
2374 * Specify the largest window that will fit in opt0. The
2375 * remainder will be specified in the rx_data_ack.
2377 win = ep->rcv_win >> 10;
2378 if (win > RCV_BUFSIZ_M)
2380 opt0 = (nocong ? NO_CONG_F : 0) |
2383 WND_SCALE_V(wscale) |
2384 MSS_IDX_V(mtu_idx) |
2385 L2T_IDX_V(ep->l2t->idx) |
2386 TX_CHAN_V(ep->tx_chan) |
2387 SMAC_SEL_V(ep->smac_idx) |
2388 DSCP_V(ep->tos >> 2) |
2389 ULP_MODE_V(ULP_MODE_TCPDDP) |
2391 opt2 = RX_CHANNEL_V(0) |
2392 RSS_QUEUE_VALID_F | RSS_QUEUE_V(ep->rss_qid);
2394 if (enable_tcp_timestamps && req->tcpopt.tstamp)
2395 opt2 |= TSTAMPS_EN_F;
2396 if (enable_tcp_sack && req->tcpopt.sack)
2398 if (wscale && enable_tcp_window_scaling)
2399 opt2 |= WND_SCALE_EN_F;
2401 const struct tcphdr *tcph;
2402 u32 hlen = ntohl(req->hdr_len);
2404 if (CHELSIO_CHIP_VERSION(adapter_type) <= CHELSIO_T5)
2405 tcph = (const void *)(req + 1) + ETH_HDR_LEN_G(hlen) +
2408 tcph = (const void *)(req + 1) +
2409 T6_ETH_HDR_LEN_G(hlen) + T6_IP_HDR_LEN_G(hlen);
2410 if (tcph->ece && tcph->cwr)
2411 opt2 |= CCTRL_ECN_V(1);
2413 if (CHELSIO_CHIP_VERSION(adapter_type) > CHELSIO_T4) {
2414 u32 isn = (prandom_u32() & ~7UL) - 1;
2415 opt2 |= T5_OPT_2_VALID_F;
2416 opt2 |= CONG_CNTRL_V(CONG_ALG_TAHOE);
2419 memset(&rpl5->iss, 0, roundup(sizeof(*rpl5)-sizeof(*rpl), 16));
2422 rpl5->iss = cpu_to_be32(isn);
2423 pr_debug("iss %u\n", be32_to_cpu(rpl5->iss));
2426 rpl->opt0 = cpu_to_be64(opt0);
2427 rpl->opt2 = cpu_to_be32(opt2);
2428 set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx);
2429 t4_set_arp_err_handler(skb, ep, pass_accept_rpl_arp_failure);
2431 return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
2434 static void reject_cr(struct c4iw_dev *dev, u32 hwtid, struct sk_buff *skb)
2436 pr_debug("c4iw_dev %p tid %u\n", dev, hwtid);
2437 skb_trim(skb, sizeof(struct cpl_tid_release));
2438 release_tid(&dev->rdev, hwtid, skb);
2442 static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
2444 struct c4iw_ep *child_ep = NULL, *parent_ep;
2445 struct cpl_pass_accept_req *req = cplhdr(skb);
2446 unsigned int stid = PASS_OPEN_TID_G(ntohl(req->tos_stid));
2447 struct tid_info *t = dev->rdev.lldi.tids;
2448 unsigned int hwtid = GET_TID(req);
2449 struct dst_entry *dst;
2450 __u8 local_ip[16], peer_ip[16];
2451 __be16 local_port, peer_port;
2452 struct sockaddr_in6 *sin6;
2454 u16 peer_mss = ntohs(req->tcpopt.mss);
2456 unsigned short hdrs;
2457 u8 tos = PASS_OPEN_TOS_G(ntohl(req->tos_stid));
2459 parent_ep = (struct c4iw_ep *)get_ep_from_stid(dev, stid);
2461 pr_err("%s connect request on invalid stid %d\n",
2466 if (state_read(&parent_ep->com) != LISTEN) {
2467 pr_err("%s - listening ep not in LISTEN\n", __func__);
2471 cxgb_get_4tuple(req, parent_ep->com.dev->rdev.lldi.adapter_type,
2472 &iptype, local_ip, peer_ip, &local_port, &peer_port);
2474 /* Find output route */
2476 pr_debug("parent ep %p hwtid %u laddr %pI4 raddr %pI4 lport %d rport %d peer_mss %d\n"
2478 local_ip, peer_ip, ntohs(local_port),
2479 ntohs(peer_port), peer_mss);
2480 dst = cxgb_find_route(&dev->rdev.lldi, get_real_dev,
2481 *(__be32 *)local_ip, *(__be32 *)peer_ip,
2482 local_port, peer_port, tos);
2484 pr_debug("parent ep %p hwtid %u laddr %pI6 raddr %pI6 lport %d rport %d peer_mss %d\n"
2486 local_ip, peer_ip, ntohs(local_port),
2487 ntohs(peer_port), peer_mss);
2488 dst = cxgb_find_route6(&dev->rdev.lldi, get_real_dev,
2489 local_ip, peer_ip, local_port, peer_port,
2490 PASS_OPEN_TOS_G(ntohl(req->tos_stid)),
2491 ((struct sockaddr_in6 *)
2492 &parent_ep->com.local_addr)->sin6_scope_id);
2495 pr_err("%s - failed to find dst entry!\n", __func__);
2499 child_ep = alloc_ep(sizeof(*child_ep), GFP_KERNEL);
2501 pr_err("%s - failed to allocate ep entry!\n", __func__);
2506 err = import_ep(child_ep, iptype, peer_ip, dst, dev, false,
2507 parent_ep->com.dev->rdev.lldi.adapter_type, tos);
2509 pr_err("%s - failed to allocate l2t entry!\n", __func__);
2515 hdrs = ((iptype == 4) ? sizeof(struct iphdr) : sizeof(struct ipv6hdr)) +
2516 sizeof(struct tcphdr) +
2517 ((enable_tcp_timestamps && req->tcpopt.tstamp) ? 12 : 0);
2518 if (peer_mss && child_ep->mtu > (peer_mss + hdrs))
2519 child_ep->mtu = peer_mss + hdrs;
2521 skb_queue_head_init(&child_ep->com.ep_skb_list);
2522 if (alloc_ep_skb_list(&child_ep->com.ep_skb_list, CN_MAX_CON_BUF))
2525 state_set(&child_ep->com, CONNECTING);
2526 child_ep->com.dev = dev;
2527 child_ep->com.cm_id = NULL;
2530 struct sockaddr_in *sin = (struct sockaddr_in *)
2531 &child_ep->com.local_addr;
2533 sin->sin_family = AF_INET;
2534 sin->sin_port = local_port;
2535 sin->sin_addr.s_addr = *(__be32 *)local_ip;
2537 sin = (struct sockaddr_in *)&child_ep->com.local_addr;
2538 sin->sin_family = AF_INET;
2539 sin->sin_port = ((struct sockaddr_in *)
2540 &parent_ep->com.local_addr)->sin_port;
2541 sin->sin_addr.s_addr = *(__be32 *)local_ip;
2543 sin = (struct sockaddr_in *)&child_ep->com.remote_addr;
2544 sin->sin_family = AF_INET;
2545 sin->sin_port = peer_port;
2546 sin->sin_addr.s_addr = *(__be32 *)peer_ip;
2548 sin6 = (struct sockaddr_in6 *)&child_ep->com.local_addr;
2549 sin6->sin6_family = PF_INET6;
2550 sin6->sin6_port = local_port;
2551 memcpy(sin6->sin6_addr.s6_addr, local_ip, 16);
2553 sin6 = (struct sockaddr_in6 *)&child_ep->com.local_addr;
2554 sin6->sin6_family = PF_INET6;
2555 sin6->sin6_port = ((struct sockaddr_in6 *)
2556 &parent_ep->com.local_addr)->sin6_port;
2557 memcpy(sin6->sin6_addr.s6_addr, local_ip, 16);
2559 sin6 = (struct sockaddr_in6 *)&child_ep->com.remote_addr;
2560 sin6->sin6_family = PF_INET6;
2561 sin6->sin6_port = peer_port;
2562 memcpy(sin6->sin6_addr.s6_addr, peer_ip, 16);
2565 c4iw_get_ep(&parent_ep->com);
2566 child_ep->parent_ep = parent_ep;
2567 child_ep->tos = tos;
2568 child_ep->dst = dst;
2569 child_ep->hwtid = hwtid;
2571 pr_debug("tx_chan %u smac_idx %u rss_qid %u\n",
2572 child_ep->tx_chan, child_ep->smac_idx, child_ep->rss_qid);
2574 timer_setup(&child_ep->timer, ep_timeout, 0);
2575 cxgb4_insert_tid(t, child_ep, hwtid,
2576 child_ep->com.local_addr.ss_family);
2577 insert_ep_tid(child_ep);
2578 if (accept_cr(child_ep, skb, req)) {
2579 c4iw_put_ep(&parent_ep->com);
2580 release_ep_resources(child_ep);
2582 set_bit(PASS_ACCEPT_REQ, &child_ep->com.history);
2585 sin6 = (struct sockaddr_in6 *)&child_ep->com.local_addr;
2586 cxgb4_clip_get(child_ep->com.dev->rdev.lldi.ports[0],
2587 (const u32 *)&sin6->sin6_addr.s6_addr, 1);
2591 c4iw_put_ep(&child_ep->com);
2593 reject_cr(dev, hwtid, skb);
2596 c4iw_put_ep(&parent_ep->com);
2600 static int pass_establish(struct c4iw_dev *dev, struct sk_buff *skb)
2603 struct cpl_pass_establish *req = cplhdr(skb);
2604 unsigned int tid = GET_TID(req);
2607 ep = get_ep_from_tid(dev, tid);
2608 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
2609 ep->snd_seq = be32_to_cpu(req->snd_isn);
2610 ep->rcv_seq = be32_to_cpu(req->rcv_isn);
2612 pr_debug("ep %p hwtid %u tcp_opt 0x%02x\n", ep, tid,
2613 ntohs(req->tcp_opt));
2615 set_emss(ep, ntohs(req->tcp_opt));
2617 dst_confirm(ep->dst);
2618 mutex_lock(&ep->com.mutex);
2619 ep->com.state = MPA_REQ_WAIT;
2621 set_bit(PASS_ESTAB, &ep->com.history);
2622 ret = send_flowc(ep);
2623 mutex_unlock(&ep->com.mutex);
2625 c4iw_ep_disconnect(ep, 1, GFP_KERNEL);
2626 c4iw_put_ep(&ep->com);
2631 static int peer_close(struct c4iw_dev *dev, struct sk_buff *skb)
2633 struct cpl_peer_close *hdr = cplhdr(skb);
2635 struct c4iw_qp_attributes attrs;
2638 unsigned int tid = GET_TID(hdr);
2641 ep = get_ep_from_tid(dev, tid);
2645 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
2646 dst_confirm(ep->dst);
2648 set_bit(PEER_CLOSE, &ep->com.history);
2649 mutex_lock(&ep->com.mutex);
2650 switch (ep->com.state) {
2652 __state_set(&ep->com, CLOSING);
2655 __state_set(&ep->com, CLOSING);
2656 connect_reply_upcall(ep, -ECONNRESET);
2661 * We're gonna mark this puppy DEAD, but keep
2662 * the reference on it until the ULP accepts or
2663 * rejects the CR. Also wake up anyone waiting
2664 * in rdma connection migration (see c4iw_accept_cr()).
2666 __state_set(&ep->com, CLOSING);
2667 pr_debug("waking up ep %p tid %u\n", ep, ep->hwtid);
2668 c4iw_wake_up_noref(ep->com.wr_waitp, -ECONNRESET);
2671 __state_set(&ep->com, CLOSING);
2672 pr_debug("waking up ep %p tid %u\n", ep, ep->hwtid);
2673 c4iw_wake_up_noref(ep->com.wr_waitp, -ECONNRESET);
2677 __state_set(&ep->com, CLOSING);
2678 attrs.next_state = C4IW_QP_STATE_CLOSING;
2679 ret = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
2680 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
2681 if (ret != -ECONNRESET) {
2682 peer_close_upcall(ep);
2690 __state_set(&ep->com, MORIBUND);
2694 (void)stop_ep_timer(ep);
2695 if (ep->com.cm_id && ep->com.qp) {
2696 attrs.next_state = C4IW_QP_STATE_IDLE;
2697 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
2698 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
2700 close_complete_upcall(ep, 0);
2701 __state_set(&ep->com, DEAD);
2709 WARN_ONCE(1, "Bad endpoint state %u\n", ep->com.state);
2711 mutex_unlock(&ep->com.mutex);
2713 c4iw_ep_disconnect(ep, 0, GFP_KERNEL);
2715 release_ep_resources(ep);
2716 c4iw_put_ep(&ep->com);
2720 static int peer_abort(struct c4iw_dev *dev, struct sk_buff *skb)
2722 struct cpl_abort_req_rss *req = cplhdr(skb);
2724 struct sk_buff *rpl_skb;
2725 struct c4iw_qp_attributes attrs;
2728 unsigned int tid = GET_TID(req);
2729 u32 len = roundup(sizeof(struct cpl_abort_rpl), 16);
2731 ep = get_ep_from_tid(dev, tid);
2735 if (cxgb_is_neg_adv(req->status)) {
2736 pr_debug("Negative advice on abort- tid %u status %d (%s)\n",
2737 ep->hwtid, req->status, neg_adv_str(req->status));
2738 ep->stats.abort_neg_adv++;
2739 mutex_lock(&dev->rdev.stats.lock);
2740 dev->rdev.stats.neg_adv++;
2741 mutex_unlock(&dev->rdev.stats.lock);
2744 pr_debug("ep %p tid %u state %u\n", ep, ep->hwtid,
2746 set_bit(PEER_ABORT, &ep->com.history);
2749 * Wake up any threads in rdma_init() or rdma_fini().
2750 * However, this is not needed if com state is just
2753 if (ep->com.state != MPA_REQ_SENT)
2754 c4iw_wake_up_noref(ep->com.wr_waitp, -ECONNRESET);
2756 mutex_lock(&ep->com.mutex);
2757 switch (ep->com.state) {
2759 c4iw_put_ep(&ep->parent_ep->com);
2762 (void)stop_ep_timer(ep);
2765 (void)stop_ep_timer(ep);
2766 if (mpa_rev == 1 || (mpa_rev == 2 && ep->tried_with_mpa_v1))
2767 connect_reply_upcall(ep, -ECONNRESET);
2770 * we just don't send notification upwards because we
2771 * want to retry with mpa_v1 without upper layers even
2774 * do some housekeeping so as to re-initiate the
2777 pr_info("%s: mpa_rev=%d. Retrying with mpav1\n",
2779 ep->retry_with_mpa_v1 = 1;
2791 if (ep->com.cm_id && ep->com.qp) {
2792 attrs.next_state = C4IW_QP_STATE_ERROR;
2793 ret = c4iw_modify_qp(ep->com.qp->rhp,
2794 ep->com.qp, C4IW_QP_ATTR_NEXT_STATE,
2797 pr_err("%s - qp <- error failed!\n", __func__);
2799 peer_abort_upcall(ep);
2804 pr_warn("%s PEER_ABORT IN DEAD STATE!!!!\n", __func__);
2805 mutex_unlock(&ep->com.mutex);
2808 WARN_ONCE(1, "Bad endpoint state %u\n", ep->com.state);
2811 dst_confirm(ep->dst);
2812 if (ep->com.state != ABORTING) {
2813 __state_set(&ep->com, DEAD);
2814 /* we don't release if we want to retry with mpa_v1 */
2815 if (!ep->retry_with_mpa_v1)
2818 mutex_unlock(&ep->com.mutex);
2820 rpl_skb = skb_dequeue(&ep->com.ep_skb_list);
2821 if (WARN_ON(!rpl_skb)) {
2826 cxgb_mk_abort_rpl(rpl_skb, len, ep->hwtid, ep->txq_idx);
2828 c4iw_ofld_send(&ep->com.dev->rdev, rpl_skb);
2831 release_ep_resources(ep);
2832 else if (ep->retry_with_mpa_v1) {
2833 if (ep->com.remote_addr.ss_family == AF_INET6) {
2834 struct sockaddr_in6 *sin6 =
2835 (struct sockaddr_in6 *)
2836 &ep->com.local_addr;
2838 ep->com.dev->rdev.lldi.ports[0],
2839 (const u32 *)&sin6->sin6_addr.s6_addr,
2842 remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid);
2843 cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid,
2844 ep->com.local_addr.ss_family);
2845 dst_release(ep->dst);
2846 cxgb4_l2t_release(ep->l2t);
2851 c4iw_put_ep(&ep->com);
2852 /* Dereferencing ep, referenced in peer_abort_intr() */
2853 c4iw_put_ep(&ep->com);
2857 static int close_con_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
2860 struct c4iw_qp_attributes attrs;
2861 struct cpl_close_con_rpl *rpl = cplhdr(skb);
2863 unsigned int tid = GET_TID(rpl);
2865 ep = get_ep_from_tid(dev, tid);
2869 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
2871 /* The cm_id may be null if we failed to connect */
2872 mutex_lock(&ep->com.mutex);
2873 set_bit(CLOSE_CON_RPL, &ep->com.history);
2874 switch (ep->com.state) {
2876 __state_set(&ep->com, MORIBUND);
2879 (void)stop_ep_timer(ep);
2880 if ((ep->com.cm_id) && (ep->com.qp)) {
2881 attrs.next_state = C4IW_QP_STATE_IDLE;
2882 c4iw_modify_qp(ep->com.qp->rhp,
2884 C4IW_QP_ATTR_NEXT_STATE,
2887 close_complete_upcall(ep, 0);
2888 __state_set(&ep->com, DEAD);
2895 WARN_ONCE(1, "Bad endpoint state %u\n", ep->com.state);
2898 mutex_unlock(&ep->com.mutex);
2900 release_ep_resources(ep);
2901 c4iw_put_ep(&ep->com);
2905 static int terminate(struct c4iw_dev *dev, struct sk_buff *skb)
2907 struct cpl_rdma_terminate *rpl = cplhdr(skb);
2908 unsigned int tid = GET_TID(rpl);
2910 struct c4iw_qp_attributes attrs;
2912 ep = get_ep_from_tid(dev, tid);
2914 if (ep && ep->com.qp) {
2915 pr_warn("TERM received tid %u qpid %u\n",
2916 tid, ep->com.qp->wq.sq.qid);
2917 attrs.next_state = C4IW_QP_STATE_TERMINATE;
2918 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
2919 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
2921 pr_warn("TERM received tid %u no ep/qp\n", tid);
2922 c4iw_put_ep(&ep->com);
2928 * Upcall from the adapter indicating data has been transmitted.
2929 * For us its just the single MPA request or reply. We can now free
2930 * the skb holding the mpa message.
2932 static int fw4_ack(struct c4iw_dev *dev, struct sk_buff *skb)
2935 struct cpl_fw4_ack *hdr = cplhdr(skb);
2936 u8 credits = hdr->credits;
2937 unsigned int tid = GET_TID(hdr);
2940 ep = get_ep_from_tid(dev, tid);
2943 pr_debug("ep %p tid %u credits %u\n",
2944 ep, ep->hwtid, credits);
2946 pr_debug("0 credit ack ep %p tid %u state %u\n",
2947 ep, ep->hwtid, state_read(&ep->com));
2951 dst_confirm(ep->dst);
2953 pr_debug("last streaming msg ack ep %p tid %u state %u initiator %u freeing skb\n",
2954 ep, ep->hwtid, state_read(&ep->com),
2955 ep->mpa_attr.initiator ? 1 : 0);
2956 mutex_lock(&ep->com.mutex);
2957 kfree_skb(ep->mpa_skb);
2959 if (test_bit(STOP_MPA_TIMER, &ep->com.flags))
2961 mutex_unlock(&ep->com.mutex);
2964 c4iw_put_ep(&ep->com);
2968 int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
2971 struct c4iw_ep *ep = to_ep(cm_id);
2973 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
2975 mutex_lock(&ep->com.mutex);
2976 if (ep->com.state != MPA_REQ_RCVD) {
2977 mutex_unlock(&ep->com.mutex);
2978 c4iw_put_ep(&ep->com);
2981 set_bit(ULP_REJECT, &ep->com.history);
2985 abort = send_mpa_reject(ep, pdata, pdata_len);
2986 mutex_unlock(&ep->com.mutex);
2989 c4iw_ep_disconnect(ep, abort != 0, GFP_KERNEL);
2990 c4iw_put_ep(&ep->com);
2994 int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
2997 struct c4iw_qp_attributes attrs;
2998 enum c4iw_qp_attr_mask mask;
2999 struct c4iw_ep *ep = to_ep(cm_id);
3000 struct c4iw_dev *h = to_c4iw_dev(cm_id->device);
3001 struct c4iw_qp *qp = get_qhp(h, conn_param->qpn);
3004 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
3006 mutex_lock(&ep->com.mutex);
3007 if (ep->com.state != MPA_REQ_RCVD) {
3017 set_bit(ULP_ACCEPT, &ep->com.history);
3018 if ((conn_param->ord > cur_max_read_depth(ep->com.dev)) ||
3019 (conn_param->ird > cur_max_read_depth(ep->com.dev))) {
3024 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
3025 if (conn_param->ord > ep->ird) {
3026 if (RELAXED_IRD_NEGOTIATION) {
3027 conn_param->ord = ep->ird;
3029 ep->ird = conn_param->ird;
3030 ep->ord = conn_param->ord;
3031 send_mpa_reject(ep, conn_param->private_data,
3032 conn_param->private_data_len);
3037 if (conn_param->ird < ep->ord) {
3038 if (RELAXED_IRD_NEGOTIATION &&
3039 ep->ord <= h->rdev.lldi.max_ordird_qp) {
3040 conn_param->ird = ep->ord;
3047 ep->ird = conn_param->ird;
3048 ep->ord = conn_param->ord;
3050 if (ep->mpa_attr.version == 1) {
3051 if (peer2peer && ep->ird == 0)
3055 (ep->mpa_attr.p2p_type != FW_RI_INIT_P2PTYPE_DISABLED) &&
3056 (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) && ep->ird == 0)
3060 pr_debug("ird %d ord %d\n", ep->ird, ep->ord);
3062 ep->com.cm_id = cm_id;
3063 ref_cm_id(&ep->com);
3067 /* bind QP to EP and move to RTS */
3068 attrs.mpa_attr = ep->mpa_attr;
3069 attrs.max_ird = ep->ird;
3070 attrs.max_ord = ep->ord;
3071 attrs.llp_stream_handle = ep;
3072 attrs.next_state = C4IW_QP_STATE_RTS;
3074 /* bind QP and TID with INIT_WR */
3075 mask = C4IW_QP_ATTR_NEXT_STATE |
3076 C4IW_QP_ATTR_LLP_STREAM_HANDLE |
3077 C4IW_QP_ATTR_MPA_ATTR |
3078 C4IW_QP_ATTR_MAX_IRD |
3079 C4IW_QP_ATTR_MAX_ORD;
3081 err = c4iw_modify_qp(ep->com.qp->rhp,
3082 ep->com.qp, mask, &attrs, 1);
3084 goto err_deref_cm_id;
3086 set_bit(STOP_MPA_TIMER, &ep->com.flags);
3087 err = send_mpa_reply(ep, conn_param->private_data,
3088 conn_param->private_data_len);
3090 goto err_deref_cm_id;
3092 __state_set(&ep->com, FPDU_MODE);
3093 established_upcall(ep);
3094 mutex_unlock(&ep->com.mutex);
3095 c4iw_put_ep(&ep->com);
3098 deref_cm_id(&ep->com);
3102 mutex_unlock(&ep->com.mutex);
3104 c4iw_ep_disconnect(ep, 1, GFP_KERNEL);
3105 c4iw_put_ep(&ep->com);
3109 static int pick_local_ipaddrs(struct c4iw_dev *dev, struct iw_cm_id *cm_id)
3111 struct in_device *ind;
3113 struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->m_local_addr;
3114 struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->m_remote_addr;
3116 ind = in_dev_get(dev->rdev.lldi.ports[0]);
3118 return -EADDRNOTAVAIL;
3119 for_primary_ifa(ind) {
3120 laddr->sin_addr.s_addr = ifa->ifa_address;
3121 raddr->sin_addr.s_addr = ifa->ifa_address;
3127 return found ? 0 : -EADDRNOTAVAIL;
3130 static int get_lladdr(struct net_device *dev, struct in6_addr *addr,
3131 unsigned char banned_flags)
3133 struct inet6_dev *idev;
3134 int err = -EADDRNOTAVAIL;
3137 idev = __in6_dev_get(dev);
3139 struct inet6_ifaddr *ifp;
3141 read_lock_bh(&idev->lock);
3142 list_for_each_entry(ifp, &idev->addr_list, if_list) {
3143 if (ifp->scope == IFA_LINK &&
3144 !(ifp->flags & banned_flags)) {
3145 memcpy(addr, &ifp->addr, 16);
3150 read_unlock_bh(&idev->lock);
3156 static int pick_local_ip6addrs(struct c4iw_dev *dev, struct iw_cm_id *cm_id)
3158 struct in6_addr uninitialized_var(addr);
3159 struct sockaddr_in6 *la6 = (struct sockaddr_in6 *)&cm_id->m_local_addr;
3160 struct sockaddr_in6 *ra6 = (struct sockaddr_in6 *)&cm_id->m_remote_addr;
3162 if (!get_lladdr(dev->rdev.lldi.ports[0], &addr, IFA_F_TENTATIVE)) {
3163 memcpy(la6->sin6_addr.s6_addr, &addr, 16);
3164 memcpy(ra6->sin6_addr.s6_addr, &addr, 16);
3167 return -EADDRNOTAVAIL;
3170 int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
3172 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device);
3175 struct sockaddr_in *laddr;
3176 struct sockaddr_in *raddr;
3177 struct sockaddr_in6 *laddr6;
3178 struct sockaddr_in6 *raddr6;
3182 if ((conn_param->ord > cur_max_read_depth(dev)) ||
3183 (conn_param->ird > cur_max_read_depth(dev))) {
3187 ep = alloc_ep(sizeof(*ep), GFP_KERNEL);
3189 pr_err("%s - cannot alloc ep\n", __func__);
3194 skb_queue_head_init(&ep->com.ep_skb_list);
3195 if (alloc_ep_skb_list(&ep->com.ep_skb_list, CN_MAX_CON_BUF)) {
3200 timer_setup(&ep->timer, ep_timeout, 0);
3201 ep->plen = conn_param->private_data_len;
3203 memcpy(ep->mpa_pkt + sizeof(struct mpa_message),
3204 conn_param->private_data, ep->plen);
3205 ep->ird = conn_param->ird;
3206 ep->ord = conn_param->ord;
3208 if (peer2peer && ep->ord == 0)
3211 ep->com.cm_id = cm_id;
3212 ref_cm_id(&ep->com);
3213 cm_id->provider_data = ep;
3215 ep->com.qp = get_qhp(dev, conn_param->qpn);
3217 pr_warn("%s qpn 0x%x not found!\n", __func__, conn_param->qpn);
3222 pr_debug("qpn 0x%x qp %p cm_id %p\n", conn_param->qpn,
3226 * Allocate an active TID to initiate a TCP connection.
3228 ep->atid = cxgb4_alloc_atid(dev->rdev.lldi.tids, ep);
3229 if (ep->atid == -1) {
3230 pr_err("%s - cannot alloc atid\n", __func__);
3234 insert_handle(dev, &dev->atid_idr, ep, ep->atid);
3236 memcpy(&ep->com.local_addr, &cm_id->m_local_addr,
3237 sizeof(ep->com.local_addr));
3238 memcpy(&ep->com.remote_addr, &cm_id->m_remote_addr,
3239 sizeof(ep->com.remote_addr));
3241 laddr = (struct sockaddr_in *)&ep->com.local_addr;
3242 raddr = (struct sockaddr_in *)&ep->com.remote_addr;
3243 laddr6 = (struct sockaddr_in6 *)&ep->com.local_addr;
3244 raddr6 = (struct sockaddr_in6 *) &ep->com.remote_addr;
3246 if (cm_id->m_remote_addr.ss_family == AF_INET) {
3248 ra = (__u8 *)&raddr->sin_addr;
3251 * Handle loopback requests to INADDR_ANY.
3253 if (raddr->sin_addr.s_addr == htonl(INADDR_ANY)) {
3254 err = pick_local_ipaddrs(dev, cm_id);
3260 pr_debug("saddr %pI4 sport 0x%x raddr %pI4 rport 0x%x\n",
3261 &laddr->sin_addr, ntohs(laddr->sin_port),
3262 ra, ntohs(raddr->sin_port));
3263 ep->dst = cxgb_find_route(&dev->rdev.lldi, get_real_dev,
3264 laddr->sin_addr.s_addr,
3265 raddr->sin_addr.s_addr,
3267 raddr->sin_port, cm_id->tos);
3270 ra = (__u8 *)&raddr6->sin6_addr;
3273 * Handle loopback requests to INADDR_ANY.
3275 if (ipv6_addr_type(&raddr6->sin6_addr) == IPV6_ADDR_ANY) {
3276 err = pick_local_ip6addrs(dev, cm_id);
3282 pr_debug("saddr %pI6 sport 0x%x raddr %pI6 rport 0x%x\n",
3283 laddr6->sin6_addr.s6_addr,
3284 ntohs(laddr6->sin6_port),
3285 raddr6->sin6_addr.s6_addr, ntohs(raddr6->sin6_port));
3286 ep->dst = cxgb_find_route6(&dev->rdev.lldi, get_real_dev,
3287 laddr6->sin6_addr.s6_addr,
3288 raddr6->sin6_addr.s6_addr,
3290 raddr6->sin6_port, 0,
3291 raddr6->sin6_scope_id);
3294 pr_err("%s - cannot find route\n", __func__);
3295 err = -EHOSTUNREACH;
3299 err = import_ep(ep, iptype, ra, ep->dst, ep->com.dev, true,
3300 ep->com.dev->rdev.lldi.adapter_type, cm_id->tos);
3302 pr_err("%s - cannot alloc l2e\n", __func__);
3306 pr_debug("txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n",
3307 ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid,
3310 state_set(&ep->com, CONNECTING);
3311 ep->tos = cm_id->tos;
3313 /* send connect request to rnic */
3314 err = send_connect(ep);
3318 cxgb4_l2t_release(ep->l2t);
3320 dst_release(ep->dst);
3322 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid);
3323 cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid);
3325 skb_queue_purge(&ep->com.ep_skb_list);
3326 deref_cm_id(&ep->com);
3328 c4iw_put_ep(&ep->com);
3333 static int create_server6(struct c4iw_dev *dev, struct c4iw_listen_ep *ep)
3336 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)
3337 &ep->com.local_addr;
3339 if (ipv6_addr_type(&sin6->sin6_addr) != IPV6_ADDR_ANY) {
3340 err = cxgb4_clip_get(ep->com.dev->rdev.lldi.ports[0],
3341 (const u32 *)&sin6->sin6_addr.s6_addr, 1);
3345 c4iw_init_wr_wait(ep->com.wr_waitp);
3346 err = cxgb4_create_server6(ep->com.dev->rdev.lldi.ports[0],
3347 ep->stid, &sin6->sin6_addr,
3349 ep->com.dev->rdev.lldi.rxq_ids[0]);
3351 err = c4iw_wait_for_reply(&ep->com.dev->rdev,
3355 err = net_xmit_errno(err);
3357 cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
3358 (const u32 *)&sin6->sin6_addr.s6_addr, 1);
3359 pr_err("cxgb4_create_server6/filter failed err %d stid %d laddr %pI6 lport %d\n",
3361 sin6->sin6_addr.s6_addr, ntohs(sin6->sin6_port));
3366 static int create_server4(struct c4iw_dev *dev, struct c4iw_listen_ep *ep)
3369 struct sockaddr_in *sin = (struct sockaddr_in *)
3370 &ep->com.local_addr;
3372 if (dev->rdev.lldi.enable_fw_ofld_conn) {
3374 err = cxgb4_create_server_filter(
3375 ep->com.dev->rdev.lldi.ports[0], ep->stid,
3376 sin->sin_addr.s_addr, sin->sin_port, 0,
3377 ep->com.dev->rdev.lldi.rxq_ids[0], 0, 0);
3378 if (err == -EBUSY) {
3379 if (c4iw_fatal_error(&ep->com.dev->rdev)) {
3383 set_current_state(TASK_UNINTERRUPTIBLE);
3384 schedule_timeout(usecs_to_jiffies(100));
3386 } while (err == -EBUSY);
3388 c4iw_init_wr_wait(ep->com.wr_waitp);
3389 err = cxgb4_create_server(ep->com.dev->rdev.lldi.ports[0],
3390 ep->stid, sin->sin_addr.s_addr, sin->sin_port,
3391 0, ep->com.dev->rdev.lldi.rxq_ids[0]);
3393 err = c4iw_wait_for_reply(&ep->com.dev->rdev,
3397 err = net_xmit_errno(err);
3400 pr_err("cxgb4_create_server/filter failed err %d stid %d laddr %pI4 lport %d\n"
3402 &sin->sin_addr, ntohs(sin->sin_port));
3406 int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog)
3409 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device);
3410 struct c4iw_listen_ep *ep;
3414 ep = alloc_ep(sizeof(*ep), GFP_KERNEL);
3416 pr_err("%s - cannot alloc ep\n", __func__);
3420 skb_queue_head_init(&ep->com.ep_skb_list);
3421 pr_debug("ep %p\n", ep);
3422 ep->com.cm_id = cm_id;
3423 ref_cm_id(&ep->com);
3425 ep->backlog = backlog;
3426 memcpy(&ep->com.local_addr, &cm_id->m_local_addr,
3427 sizeof(ep->com.local_addr));
3430 * Allocate a server TID.
3432 if (dev->rdev.lldi.enable_fw_ofld_conn &&
3433 ep->com.local_addr.ss_family == AF_INET)
3434 ep->stid = cxgb4_alloc_sftid(dev->rdev.lldi.tids,
3435 cm_id->m_local_addr.ss_family, ep);
3437 ep->stid = cxgb4_alloc_stid(dev->rdev.lldi.tids,
3438 cm_id->m_local_addr.ss_family, ep);
3440 if (ep->stid == -1) {
3441 pr_err("%s - cannot alloc stid\n", __func__);
3445 insert_handle(dev, &dev->stid_idr, ep, ep->stid);
3447 memcpy(&ep->com.local_addr, &cm_id->m_local_addr,
3448 sizeof(ep->com.local_addr));
3450 state_set(&ep->com, LISTEN);
3451 if (ep->com.local_addr.ss_family == AF_INET)
3452 err = create_server4(dev, ep);
3454 err = create_server6(dev, ep);
3456 cm_id->provider_data = ep;
3459 remove_handle(ep->com.dev, &ep->com.dev->stid_idr, ep->stid);
3460 cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid,
3461 ep->com.local_addr.ss_family);
3463 deref_cm_id(&ep->com);
3464 c4iw_put_ep(&ep->com);
3470 int c4iw_destroy_listen(struct iw_cm_id *cm_id)
3473 struct c4iw_listen_ep *ep = to_listen_ep(cm_id);
3475 pr_debug("ep %p\n", ep);
3478 state_set(&ep->com, DEAD);
3479 if (ep->com.dev->rdev.lldi.enable_fw_ofld_conn &&
3480 ep->com.local_addr.ss_family == AF_INET) {
3481 err = cxgb4_remove_server_filter(
3482 ep->com.dev->rdev.lldi.ports[0], ep->stid,
3483 ep->com.dev->rdev.lldi.rxq_ids[0], 0);
3485 struct sockaddr_in6 *sin6;
3486 c4iw_init_wr_wait(ep->com.wr_waitp);
3487 err = cxgb4_remove_server(
3488 ep->com.dev->rdev.lldi.ports[0], ep->stid,
3489 ep->com.dev->rdev.lldi.rxq_ids[0], 0);
3492 err = c4iw_wait_for_reply(&ep->com.dev->rdev, ep->com.wr_waitp,
3494 sin6 = (struct sockaddr_in6 *)&ep->com.local_addr;
3495 cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
3496 (const u32 *)&sin6->sin6_addr.s6_addr, 1);
3498 remove_handle(ep->com.dev, &ep->com.dev->stid_idr, ep->stid);
3499 cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid,
3500 ep->com.local_addr.ss_family);
3502 deref_cm_id(&ep->com);
3503 c4iw_put_ep(&ep->com);
3507 int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp)
3512 struct c4iw_rdev *rdev;
3514 mutex_lock(&ep->com.mutex);
3516 pr_debug("ep %p state %s, abrupt %d\n", ep,
3517 states[ep->com.state], abrupt);
3520 * Ref the ep here in case we have fatal errors causing the
3521 * ep to be released and freed.
3523 c4iw_get_ep(&ep->com);
3525 rdev = &ep->com.dev->rdev;
3526 if (c4iw_fatal_error(rdev)) {
3528 close_complete_upcall(ep, -EIO);
3529 ep->com.state = DEAD;
3531 switch (ep->com.state) {
3540 ep->com.state = ABORTING;
3542 ep->com.state = CLOSING;
3545 * if we close before we see the fw4_ack() then we fix
3546 * up the timer state since we're reusing it.
3549 test_bit(STOP_MPA_TIMER, &ep->com.flags)) {
3550 clear_bit(STOP_MPA_TIMER, &ep->com.flags);
3555 set_bit(CLOSE_SENT, &ep->com.flags);
3558 if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) {
3561 (void)stop_ep_timer(ep);
3562 ep->com.state = ABORTING;
3564 ep->com.state = MORIBUND;
3570 pr_debug("ignoring disconnect ep %p state %u\n",
3574 WARN_ONCE(1, "Bad endpoint state %u\n", ep->com.state);
3580 set_bit(EP_DISC_ABORT, &ep->com.history);
3581 close_complete_upcall(ep, -ECONNRESET);
3582 ret = send_abort(ep);
3584 set_bit(EP_DISC_CLOSE, &ep->com.history);
3585 ret = send_halfclose(ep);
3588 set_bit(EP_DISC_FAIL, &ep->com.history);
3591 close_complete_upcall(ep, -EIO);
3594 struct c4iw_qp_attributes attrs;
3596 attrs.next_state = C4IW_QP_STATE_ERROR;
3597 ret = c4iw_modify_qp(ep->com.qp->rhp,
3599 C4IW_QP_ATTR_NEXT_STATE,
3602 pr_err("%s - qp <- error failed!\n",
3608 mutex_unlock(&ep->com.mutex);
3609 c4iw_put_ep(&ep->com);
3611 release_ep_resources(ep);
3615 static void active_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb,
3616 struct cpl_fw6_msg_ofld_connection_wr_rpl *req)
3619 int atid = be32_to_cpu(req->tid);
3621 ep = (struct c4iw_ep *)lookup_atid(dev->rdev.lldi.tids,
3622 (__force u32) req->tid);
3626 switch (req->retval) {
3628 set_bit(ACT_RETRY_NOMEM, &ep->com.history);
3629 if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) {
3630 send_fw_act_open_req(ep, atid);
3635 set_bit(ACT_RETRY_INUSE, &ep->com.history);
3636 if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) {
3637 send_fw_act_open_req(ep, atid);
3642 pr_info("%s unexpected ofld conn wr retval %d\n",
3643 __func__, req->retval);
3646 pr_err("active ofld_connect_wr failure %d atid %d\n",
3648 mutex_lock(&dev->rdev.stats.lock);
3649 dev->rdev.stats.act_ofld_conn_fails++;
3650 mutex_unlock(&dev->rdev.stats.lock);
3651 connect_reply_upcall(ep, status2errno(req->retval));
3652 state_set(&ep->com, DEAD);
3653 if (ep->com.remote_addr.ss_family == AF_INET6) {
3654 struct sockaddr_in6 *sin6 =
3655 (struct sockaddr_in6 *)&ep->com.local_addr;
3656 cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
3657 (const u32 *)&sin6->sin6_addr.s6_addr, 1);
3659 remove_handle(dev, &dev->atid_idr, atid);
3660 cxgb4_free_atid(dev->rdev.lldi.tids, atid);
3661 dst_release(ep->dst);
3662 cxgb4_l2t_release(ep->l2t);
3663 c4iw_put_ep(&ep->com);
3666 static void passive_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb,
3667 struct cpl_fw6_msg_ofld_connection_wr_rpl *req)
3669 struct sk_buff *rpl_skb;
3670 struct cpl_pass_accept_req *cpl;
3673 rpl_skb = (struct sk_buff *)(unsigned long)req->cookie;
3675 pr_err("%s passive open failure %d\n", __func__, req->retval);
3676 mutex_lock(&dev->rdev.stats.lock);
3677 dev->rdev.stats.pas_ofld_conn_fails++;
3678 mutex_unlock(&dev->rdev.stats.lock);
3681 cpl = (struct cpl_pass_accept_req *)cplhdr(rpl_skb);
3682 OPCODE_TID(cpl) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ,
3683 (__force u32) htonl(
3684 (__force u32) req->tid)));
3685 ret = pass_accept_req(dev, rpl_skb);
3692 static int deferred_fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb)
3694 struct cpl_fw6_msg *rpl = cplhdr(skb);
3695 struct cpl_fw6_msg_ofld_connection_wr_rpl *req;
3697 switch (rpl->type) {
3699 c4iw_ev_dispatch(dev, (struct t4_cqe *)&rpl->data[0]);
3701 case FW6_TYPE_OFLD_CONNECTION_WR_RPL:
3702 req = (struct cpl_fw6_msg_ofld_connection_wr_rpl *)rpl->data;
3703 switch (req->t_state) {
3705 active_ofld_conn_reply(dev, skb, req);
3708 passive_ofld_conn_reply(dev, skb, req);
3711 pr_err("%s unexpected ofld conn wr state %d\n",
3712 __func__, req->t_state);
3720 static void build_cpl_pass_accept_req(struct sk_buff *skb, int stid , u8 tos)
3723 __be16 hdr_len, vlantag, len;
3725 int tcp_hdr_len, ip_hdr_len;
3727 struct cpl_rx_pkt *cpl = cplhdr(skb);
3728 struct cpl_pass_accept_req *req;
3729 struct tcp_options_received tmp_opt;
3730 struct c4iw_dev *dev;
3731 enum chip_type type;
3733 dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *)));
3734 /* Store values from cpl_rx_pkt in temporary location. */
3735 vlantag = cpl->vlan;
3737 l2info = cpl->l2info;
3738 hdr_len = cpl->hdr_len;
3741 __skb_pull(skb, sizeof(*req) + sizeof(struct rss_header));
3744 * We need to parse the TCP options from SYN packet.
3745 * to generate cpl_pass_accept_req.
3747 memset(&tmp_opt, 0, sizeof(tmp_opt));
3748 tcp_clear_options(&tmp_opt);
3749 tcp_parse_options(&init_net, skb, &tmp_opt, 0, NULL);
3751 req = __skb_push(skb, sizeof(*req));
3752 memset(req, 0, sizeof(*req));
3753 req->l2info = cpu_to_be16(SYN_INTF_V(intf) |
3754 SYN_MAC_IDX_V(RX_MACIDX_G(
3755 be32_to_cpu(l2info))) |
3757 type = dev->rdev.lldi.adapter_type;
3758 tcp_hdr_len = RX_TCPHDR_LEN_G(be16_to_cpu(hdr_len));
3759 ip_hdr_len = RX_IPHDR_LEN_G(be16_to_cpu(hdr_len));
3761 cpu_to_be32(SYN_RX_CHAN_V(RX_CHAN_G(be32_to_cpu(l2info))));
3762 if (CHELSIO_CHIP_VERSION(type) <= CHELSIO_T5) {
3763 eth_hdr_len = is_t4(type) ?
3764 RX_ETHHDR_LEN_G(be32_to_cpu(l2info)) :
3765 RX_T5_ETHHDR_LEN_G(be32_to_cpu(l2info));
3766 req->hdr_len |= cpu_to_be32(TCP_HDR_LEN_V(tcp_hdr_len) |
3767 IP_HDR_LEN_V(ip_hdr_len) |
3768 ETH_HDR_LEN_V(eth_hdr_len));
3769 } else { /* T6 and later */
3770 eth_hdr_len = RX_T6_ETHHDR_LEN_G(be32_to_cpu(l2info));
3771 req->hdr_len |= cpu_to_be32(T6_TCP_HDR_LEN_V(tcp_hdr_len) |
3772 T6_IP_HDR_LEN_V(ip_hdr_len) |
3773 T6_ETH_HDR_LEN_V(eth_hdr_len));
3775 req->vlan = vlantag;
3777 req->tos_stid = cpu_to_be32(PASS_OPEN_TID_V(stid) |
3778 PASS_OPEN_TOS_V(tos));
3779 req->tcpopt.mss = htons(tmp_opt.mss_clamp);
3780 if (tmp_opt.wscale_ok)
3781 req->tcpopt.wsf = tmp_opt.snd_wscale;
3782 req->tcpopt.tstamp = tmp_opt.saw_tstamp;
3783 if (tmp_opt.sack_ok)
3784 req->tcpopt.sack = 1;
3785 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ, 0));
3789 static void send_fw_pass_open_req(struct c4iw_dev *dev, struct sk_buff *skb,
3790 __be32 laddr, __be16 lport,
3791 __be32 raddr, __be16 rport,
3792 u32 rcv_isn, u32 filter, u16 window,
3793 u32 rss_qid, u8 port_id)
3795 struct sk_buff *req_skb;
3796 struct fw_ofld_connection_wr *req;
3797 struct cpl_pass_accept_req *cpl = cplhdr(skb);
3800 req_skb = alloc_skb(sizeof(struct fw_ofld_connection_wr), GFP_KERNEL);
3803 req = __skb_put_zero(req_skb, sizeof(*req));
3804 req->op_compl = htonl(WR_OP_V(FW_OFLD_CONNECTION_WR) | FW_WR_COMPL_F);
3805 req->len16_pkd = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*req), 16)));
3806 req->le.version_cpl = htonl(FW_OFLD_CONNECTION_WR_CPL_F);
3807 req->le.filter = (__force __be32) filter;
3808 req->le.lport = lport;
3809 req->le.pport = rport;
3810 req->le.u.ipv4.lip = laddr;
3811 req->le.u.ipv4.pip = raddr;
3812 req->tcb.rcv_nxt = htonl(rcv_isn + 1);
3813 req->tcb.rcv_adv = htons(window);
3814 req->tcb.t_state_to_astid =
3815 htonl(FW_OFLD_CONNECTION_WR_T_STATE_V(TCP_SYN_RECV) |
3816 FW_OFLD_CONNECTION_WR_RCV_SCALE_V(cpl->tcpopt.wsf) |
3817 FW_OFLD_CONNECTION_WR_ASTID_V(
3818 PASS_OPEN_TID_G(ntohl(cpl->tos_stid))));
3821 * We store the qid in opt2 which will be used by the firmware
3822 * to send us the wr response.
3824 req->tcb.opt2 = htonl(RSS_QUEUE_V(rss_qid));
3827 * We initialize the MSS index in TCB to 0xF.
3828 * So that when driver sends cpl_pass_accept_rpl
3829 * TCB picks up the correct value. If this was 0
3830 * TP will ignore any value > 0 for MSS index.
3832 req->tcb.opt0 = cpu_to_be64(MSS_IDX_V(0xF));
3833 req->cookie = (uintptr_t)skb;
3835 set_wr_txq(req_skb, CPL_PRIORITY_CONTROL, port_id);
3836 ret = cxgb4_ofld_send(dev->rdev.lldi.ports[0], req_skb);
3838 pr_err("%s - cxgb4_ofld_send error %d - dropping\n", __func__,
3846 * Handler for CPL_RX_PKT message. Need to handle cpl_rx_pkt
3847 * messages when a filter is being used instead of server to
3848 * redirect a syn packet. When packets hit filter they are redirected
3849 * to the offload queue and driver tries to establish the connection
3850 * using firmware work request.
3852 static int rx_pkt(struct c4iw_dev *dev, struct sk_buff *skb)
3855 unsigned int filter;
3856 struct ethhdr *eh = NULL;
3857 struct vlan_ethhdr *vlan_eh = NULL;
3859 struct tcphdr *tcph;
3860 struct rss_header *rss = (void *)skb->data;
3861 struct cpl_rx_pkt *cpl = (void *)skb->data;
3862 struct cpl_pass_accept_req *req = (void *)(rss + 1);
3863 struct l2t_entry *e;
3864 struct dst_entry *dst;
3865 struct c4iw_ep *lep = NULL;
3867 struct port_info *pi;
3868 struct net_device *pdev;
3869 u16 rss_qid, eth_hdr_len;
3871 struct neighbour *neigh;
3873 /* Drop all non-SYN packets */
3874 if (!(cpl->l2info & cpu_to_be32(RXF_SYN_F)))
3878 * Drop all packets which did not hit the filter.
3879 * Unlikely to happen.
3881 if (!(rss->filter_hit && rss->filter_tid))
3885 * Calculate the server tid from filter hit index from cpl_rx_pkt.
3887 stid = (__force int) cpu_to_be32((__force u32) rss->hash_val);
3889 lep = (struct c4iw_ep *)get_ep_from_stid(dev, stid);
3891 pr_warn("%s connect request on invalid stid %d\n",
3896 switch (CHELSIO_CHIP_VERSION(dev->rdev.lldi.adapter_type)) {
3898 eth_hdr_len = RX_ETHHDR_LEN_G(be32_to_cpu(cpl->l2info));
3901 eth_hdr_len = RX_T5_ETHHDR_LEN_G(be32_to_cpu(cpl->l2info));
3904 eth_hdr_len = RX_T6_ETHHDR_LEN_G(be32_to_cpu(cpl->l2info));
3907 pr_err("T%d Chip is not supported\n",
3908 CHELSIO_CHIP_VERSION(dev->rdev.lldi.adapter_type));
3912 if (eth_hdr_len == ETH_HLEN) {
3913 eh = (struct ethhdr *)(req + 1);
3914 iph = (struct iphdr *)(eh + 1);
3916 vlan_eh = (struct vlan_ethhdr *)(req + 1);
3917 iph = (struct iphdr *)(vlan_eh + 1);
3918 skb->vlan_tci = ntohs(cpl->vlan);
3921 if (iph->version != 0x4)
3924 tcph = (struct tcphdr *)(iph + 1);
3925 skb_set_network_header(skb, (void *)iph - (void *)rss);
3926 skb_set_transport_header(skb, (void *)tcph - (void *)rss);
3929 pr_debug("lip 0x%x lport %u pip 0x%x pport %u tos %d\n",
3930 ntohl(iph->daddr), ntohs(tcph->dest), ntohl(iph->saddr),
3931 ntohs(tcph->source), iph->tos);
3933 dst = cxgb_find_route(&dev->rdev.lldi, get_real_dev,
3934 iph->daddr, iph->saddr, tcph->dest,
3935 tcph->source, iph->tos);
3937 pr_err("%s - failed to find dst entry!\n", __func__);
3940 neigh = dst_neigh_lookup_skb(dst, skb);
3943 pr_err("%s - failed to allocate neigh!\n", __func__);
3947 if (neigh->dev->flags & IFF_LOOPBACK) {
3948 pdev = ip_dev_find(&init_net, iph->daddr);
3949 e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh,
3951 pi = (struct port_info *)netdev_priv(pdev);
3954 pdev = get_real_dev(neigh->dev);
3955 e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh,
3957 pi = (struct port_info *)netdev_priv(pdev);
3959 neigh_release(neigh);
3961 pr_err("%s - failed to allocate l2t entry!\n",
3966 step = dev->rdev.lldi.nrxq / dev->rdev.lldi.nchan;
3967 rss_qid = dev->rdev.lldi.rxq_ids[pi->port_id * step];
3968 window = (__force u16) htons((__force u16)tcph->window);
3970 /* Calcuate filter portion for LE region. */
3971 filter = (__force unsigned int) cpu_to_be32(cxgb4_select_ntuple(
3972 dev->rdev.lldi.ports[0],
3976 * Synthesize the cpl_pass_accept_req. We have everything except the
3977 * TID. Once firmware sends a reply with TID we update the TID field
3978 * in cpl and pass it through the regular cpl_pass_accept_req path.
3980 build_cpl_pass_accept_req(skb, stid, iph->tos);
3981 send_fw_pass_open_req(dev, skb, iph->daddr, tcph->dest, iph->saddr,
3982 tcph->source, ntohl(tcph->seq), filter, window,
3983 rss_qid, pi->port_id);
3984 cxgb4_l2t_release(e);
3989 c4iw_put_ep(&lep->com);
3994 * These are the real handlers that are called from a
3997 static c4iw_handler_func work_handlers[NUM_CPL_CMDS + NUM_FAKE_CPLS] = {
3998 [CPL_ACT_ESTABLISH] = act_establish,
3999 [CPL_ACT_OPEN_RPL] = act_open_rpl,
4000 [CPL_RX_DATA] = rx_data,
4001 [CPL_ABORT_RPL_RSS] = abort_rpl,
4002 [CPL_ABORT_RPL] = abort_rpl,
4003 [CPL_PASS_OPEN_RPL] = pass_open_rpl,
4004 [CPL_CLOSE_LISTSRV_RPL] = close_listsrv_rpl,
4005 [CPL_PASS_ACCEPT_REQ] = pass_accept_req,
4006 [CPL_PASS_ESTABLISH] = pass_establish,
4007 [CPL_PEER_CLOSE] = peer_close,
4008 [CPL_ABORT_REQ_RSS] = peer_abort,
4009 [CPL_CLOSE_CON_RPL] = close_con_rpl,
4010 [CPL_RDMA_TERMINATE] = terminate,
4011 [CPL_FW4_ACK] = fw4_ack,
4012 [CPL_FW6_MSG] = deferred_fw6_msg,
4013 [CPL_RX_PKT] = rx_pkt,
4014 [FAKE_CPL_PUT_EP_SAFE] = _put_ep_safe,
4015 [FAKE_CPL_PASS_PUT_EP_SAFE] = _put_pass_ep_safe
4018 static void process_timeout(struct c4iw_ep *ep)
4020 struct c4iw_qp_attributes attrs;
4023 mutex_lock(&ep->com.mutex);
4024 pr_debug("ep %p tid %u state %d\n", ep, ep->hwtid, ep->com.state);
4025 set_bit(TIMEDOUT, &ep->com.history);
4026 switch (ep->com.state) {
4028 connect_reply_upcall(ep, -ETIMEDOUT);
4037 if (ep->com.cm_id && ep->com.qp) {
4038 attrs.next_state = C4IW_QP_STATE_ERROR;
4039 c4iw_modify_qp(ep->com.qp->rhp,
4040 ep->com.qp, C4IW_QP_ATTR_NEXT_STATE,
4043 close_complete_upcall(ep, -ETIMEDOUT);
4049 * These states are expected if the ep timed out at the same
4050 * time as another thread was calling stop_ep_timer().
4051 * So we silently do nothing for these states.
4056 WARN(1, "%s unexpected state ep %p tid %u state %u\n",
4057 __func__, ep, ep->hwtid, ep->com.state);
4060 mutex_unlock(&ep->com.mutex);
4062 c4iw_ep_disconnect(ep, 1, GFP_KERNEL);
4063 c4iw_put_ep(&ep->com);
4066 static void process_timedout_eps(void)
4070 spin_lock_irq(&timeout_lock);
4071 while (!list_empty(&timeout_list)) {
4072 struct list_head *tmp;
4074 tmp = timeout_list.next;
4078 spin_unlock_irq(&timeout_lock);
4079 ep = list_entry(tmp, struct c4iw_ep, entry);
4080 process_timeout(ep);
4081 spin_lock_irq(&timeout_lock);
4083 spin_unlock_irq(&timeout_lock);
4086 static void process_work(struct work_struct *work)
4088 struct sk_buff *skb = NULL;
4089 struct c4iw_dev *dev;
4090 struct cpl_act_establish *rpl;
4091 unsigned int opcode;
4094 process_timedout_eps();
4095 while ((skb = skb_dequeue(&rxq))) {
4097 dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *)));
4098 opcode = rpl->ot.opcode;
4100 if (opcode >= ARRAY_SIZE(work_handlers) ||
4101 !work_handlers[opcode]) {
4102 pr_err("No handler for opcode 0x%x.\n", opcode);
4105 ret = work_handlers[opcode](dev, skb);
4109 process_timedout_eps();
4113 static DECLARE_WORK(skb_work, process_work);
4115 static void ep_timeout(struct timer_list *t)
4117 struct c4iw_ep *ep = from_timer(ep, t, timer);
4120 spin_lock(&timeout_lock);
4121 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) {
4123 * Only insert if it is not already on the list.
4125 if (!ep->entry.next) {
4126 list_add_tail(&ep->entry, &timeout_list);
4130 spin_unlock(&timeout_lock);
4132 queue_work(workq, &skb_work);
4136 * All the CM events are handled on a work queue to have a safe context.
4138 static int sched(struct c4iw_dev *dev, struct sk_buff *skb)
4142 * Save dev in the skb->cb area.
4144 *((struct c4iw_dev **) (skb->cb + sizeof(void *))) = dev;
4147 * Queue the skb and schedule the worker thread.
4149 skb_queue_tail(&rxq, skb);
4150 queue_work(workq, &skb_work);
4154 static int set_tcb_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
4156 struct cpl_set_tcb_rpl *rpl = cplhdr(skb);
4158 if (rpl->status != CPL_ERR_NONE) {
4159 pr_err("Unexpected SET_TCB_RPL status %u for tid %u\n",
4160 rpl->status, GET_TID(rpl));
4166 static int fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb)
4168 struct cpl_fw6_msg *rpl = cplhdr(skb);
4169 struct c4iw_wr_wait *wr_waitp;
4172 pr_debug("type %u\n", rpl->type);
4174 switch (rpl->type) {
4175 case FW6_TYPE_WR_RPL:
4176 ret = (int)((be64_to_cpu(rpl->data[0]) >> 8) & 0xff);
4177 wr_waitp = (struct c4iw_wr_wait *)(__force unsigned long) rpl->data[1];
4178 pr_debug("wr_waitp %p ret %u\n", wr_waitp, ret);
4180 c4iw_wake_up_deref(wr_waitp, ret ? -ret : 0);
4184 case FW6_TYPE_OFLD_CONNECTION_WR_RPL:
4188 pr_err("%s unexpected fw6 msg type %u\n",
4189 __func__, rpl->type);
4196 static int peer_abort_intr(struct c4iw_dev *dev, struct sk_buff *skb)
4198 struct cpl_abort_req_rss *req = cplhdr(skb);
4200 unsigned int tid = GET_TID(req);
4202 ep = get_ep_from_tid(dev, tid);
4203 /* This EP will be dereferenced in peer_abort() */
4205 pr_warn("Abort on non-existent endpoint, tid %d\n", tid);
4209 if (cxgb_is_neg_adv(req->status)) {
4210 pr_debug("Negative advice on abort- tid %u status %d (%s)\n",
4211 ep->hwtid, req->status,
4212 neg_adv_str(req->status));
4215 pr_debug("ep %p tid %u state %u\n", ep, ep->hwtid, ep->com.state);
4217 c4iw_wake_up_noref(ep->com.wr_waitp, -ECONNRESET);
4224 * Most upcalls from the T4 Core go to sched() to
4225 * schedule the processing on a work queue.
4227 c4iw_handler_func c4iw_handlers[NUM_CPL_CMDS] = {
4228 [CPL_ACT_ESTABLISH] = sched,
4229 [CPL_ACT_OPEN_RPL] = sched,
4230 [CPL_RX_DATA] = sched,
4231 [CPL_ABORT_RPL_RSS] = sched,
4232 [CPL_ABORT_RPL] = sched,
4233 [CPL_PASS_OPEN_RPL] = sched,
4234 [CPL_CLOSE_LISTSRV_RPL] = sched,
4235 [CPL_PASS_ACCEPT_REQ] = sched,
4236 [CPL_PASS_ESTABLISH] = sched,
4237 [CPL_PEER_CLOSE] = sched,
4238 [CPL_CLOSE_CON_RPL] = sched,
4239 [CPL_ABORT_REQ_RSS] = peer_abort_intr,
4240 [CPL_RDMA_TERMINATE] = sched,
4241 [CPL_FW4_ACK] = sched,
4242 [CPL_SET_TCB_RPL] = set_tcb_rpl,
4243 [CPL_FW6_MSG] = fw6_msg,
4244 [CPL_RX_PKT] = sched
4247 int __init c4iw_cm_init(void)
4249 spin_lock_init(&timeout_lock);
4250 skb_queue_head_init(&rxq);
4252 workq = alloc_ordered_workqueue("iw_cxgb4", WQ_MEM_RECLAIM);
4259 void c4iw_cm_term(void)
4261 WARN_ON(!list_empty(&timeout_list));
4262 flush_workqueue(workq);
4263 destroy_workqueue(workq);