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)");
103 module_param(c4iw_debug, int, 0644);
104 MODULE_PARM_DESC(c4iw_debug, "obsolete");
106 static int peer2peer = 1;
107 module_param(peer2peer, int, 0644);
108 MODULE_PARM_DESC(peer2peer, "Support peer2peer ULPs (default=1)");
110 static int p2p_type = FW_RI_INIT_P2PTYPE_READ_REQ;
111 module_param(p2p_type, int, 0644);
112 MODULE_PARM_DESC(p2p_type, "RDMAP opcode to use for the RTR message: "
113 "1=RDMA_READ 0=RDMA_WRITE (default 1)");
115 static int ep_timeout_secs = 60;
116 module_param(ep_timeout_secs, int, 0644);
117 MODULE_PARM_DESC(ep_timeout_secs, "CM Endpoint operation timeout "
118 "in seconds (default=60)");
120 static int mpa_rev = 2;
121 module_param(mpa_rev, int, 0644);
122 MODULE_PARM_DESC(mpa_rev, "MPA Revision, 0 supports amso1100, "
123 "1 is RFC5044 spec compliant, 2 is IETF MPA Peer Connect Draft"
124 " compliant (default=2)");
126 static int markers_enabled;
127 module_param(markers_enabled, int, 0644);
128 MODULE_PARM_DESC(markers_enabled, "Enable MPA MARKERS (default(0)=disabled)");
130 static int crc_enabled = 1;
131 module_param(crc_enabled, int, 0644);
132 MODULE_PARM_DESC(crc_enabled, "Enable MPA CRC (default(1)=enabled)");
134 static int rcv_win = 256 * 1024;
135 module_param(rcv_win, int, 0644);
136 MODULE_PARM_DESC(rcv_win, "TCP receive window in bytes (default=256KB)");
138 static int snd_win = 128 * 1024;
139 module_param(snd_win, int, 0644);
140 MODULE_PARM_DESC(snd_win, "TCP send window in bytes (default=128KB)");
142 static struct workqueue_struct *workq;
144 static struct sk_buff_head rxq;
146 static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp);
147 static void ep_timeout(unsigned long arg);
148 static void connect_reply_upcall(struct c4iw_ep *ep, int status);
149 static int sched(struct c4iw_dev *dev, struct sk_buff *skb);
151 static LIST_HEAD(timeout_list);
152 static spinlock_t timeout_lock;
154 static void deref_cm_id(struct c4iw_ep_common *epc)
156 epc->cm_id->rem_ref(epc->cm_id);
158 set_bit(CM_ID_DEREFED, &epc->history);
161 static void ref_cm_id(struct c4iw_ep_common *epc)
163 set_bit(CM_ID_REFED, &epc->history);
164 epc->cm_id->add_ref(epc->cm_id);
167 static void deref_qp(struct c4iw_ep *ep)
169 c4iw_qp_rem_ref(&ep->com.qp->ibqp);
170 clear_bit(QP_REFERENCED, &ep->com.flags);
171 set_bit(QP_DEREFED, &ep->com.history);
174 static void ref_qp(struct c4iw_ep *ep)
176 set_bit(QP_REFERENCED, &ep->com.flags);
177 set_bit(QP_REFED, &ep->com.history);
178 c4iw_qp_add_ref(&ep->com.qp->ibqp);
181 static void start_ep_timer(struct c4iw_ep *ep)
183 pr_debug("ep %p\n", ep);
184 if (timer_pending(&ep->timer)) {
185 pr_err("%s timer already started! ep %p\n",
189 clear_bit(TIMEOUT, &ep->com.flags);
190 c4iw_get_ep(&ep->com);
191 ep->timer.expires = jiffies + ep_timeout_secs * HZ;
192 ep->timer.data = (unsigned long)ep;
193 ep->timer.function = ep_timeout;
194 add_timer(&ep->timer);
197 static int stop_ep_timer(struct c4iw_ep *ep)
199 pr_debug("ep %p stopping\n", ep);
200 del_timer_sync(&ep->timer);
201 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) {
202 c4iw_put_ep(&ep->com);
208 static int c4iw_l2t_send(struct c4iw_rdev *rdev, struct sk_buff *skb,
209 struct l2t_entry *l2e)
213 if (c4iw_fatal_error(rdev)) {
215 pr_err("%s - device in error state - dropping\n", __func__);
218 error = cxgb4_l2t_send(rdev->lldi.ports[0], skb, l2e);
221 else if (error == NET_XMIT_DROP)
223 return error < 0 ? error : 0;
226 int c4iw_ofld_send(struct c4iw_rdev *rdev, struct sk_buff *skb)
230 if (c4iw_fatal_error(rdev)) {
232 pr_err("%s - device in error state - dropping\n", __func__);
235 error = cxgb4_ofld_send(rdev->lldi.ports[0], skb);
238 return error < 0 ? error : 0;
241 static void release_tid(struct c4iw_rdev *rdev, u32 hwtid, struct sk_buff *skb)
243 u32 len = roundup(sizeof(struct cpl_tid_release), 16);
245 skb = get_skb(skb, len, GFP_KERNEL);
249 cxgb_mk_tid_release(skb, len, hwtid, 0);
250 c4iw_ofld_send(rdev, skb);
254 static void set_emss(struct c4iw_ep *ep, u16 opt)
256 ep->emss = ep->com.dev->rdev.lldi.mtus[TCPOPT_MSS_G(opt)] -
257 ((AF_INET == ep->com.remote_addr.ss_family) ?
258 sizeof(struct iphdr) : sizeof(struct ipv6hdr)) -
259 sizeof(struct tcphdr);
261 if (TCPOPT_TSTAMP_G(opt))
262 ep->emss -= round_up(TCPOLEN_TIMESTAMP, 4);
266 pr_warn("Warning: misaligned mtu idx %u mss %u emss=%u\n",
267 TCPOPT_MSS_G(opt), ep->mss, ep->emss);
268 pr_debug("mss_idx %u mss %u emss=%u\n", TCPOPT_MSS_G(opt), ep->mss,
272 static enum c4iw_ep_state state_read(struct c4iw_ep_common *epc)
274 enum c4iw_ep_state state;
276 mutex_lock(&epc->mutex);
278 mutex_unlock(&epc->mutex);
282 static void __state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new)
287 static void state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new)
289 mutex_lock(&epc->mutex);
290 pr_debug("%s -> %s\n", states[epc->state], states[new]);
291 __state_set(epc, new);
292 mutex_unlock(&epc->mutex);
296 static int alloc_ep_skb_list(struct sk_buff_head *ep_skb_list, int size)
302 len = roundup(sizeof(union cpl_wr_size), 16);
303 for (i = 0; i < size; i++) {
304 skb = alloc_skb(len, GFP_KERNEL);
307 skb_queue_tail(ep_skb_list, skb);
311 skb_queue_purge(ep_skb_list);
315 static void *alloc_ep(int size, gfp_t gfp)
317 struct c4iw_ep_common *epc;
319 epc = kzalloc(size, gfp);
321 kref_init(&epc->kref);
322 mutex_init(&epc->mutex);
323 c4iw_init_wr_wait(&epc->wr_wait);
325 pr_debug("alloc ep %p\n", epc);
329 static void remove_ep_tid(struct c4iw_ep *ep)
333 spin_lock_irqsave(&ep->com.dev->lock, flags);
334 _remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid, 0);
335 if (idr_is_empty(&ep->com.dev->hwtid_idr))
336 wake_up(&ep->com.dev->wait);
337 spin_unlock_irqrestore(&ep->com.dev->lock, flags);
340 static void insert_ep_tid(struct c4iw_ep *ep)
344 spin_lock_irqsave(&ep->com.dev->lock, flags);
345 _insert_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep, ep->hwtid, 0);
346 spin_unlock_irqrestore(&ep->com.dev->lock, flags);
350 * Atomically lookup the ep ptr given the tid and grab a reference on the ep.
352 static struct c4iw_ep *get_ep_from_tid(struct c4iw_dev *dev, unsigned int tid)
357 spin_lock_irqsave(&dev->lock, flags);
358 ep = idr_find(&dev->hwtid_idr, tid);
360 c4iw_get_ep(&ep->com);
361 spin_unlock_irqrestore(&dev->lock, flags);
366 * Atomically lookup the ep ptr given the stid and grab a reference on the ep.
368 static struct c4iw_listen_ep *get_ep_from_stid(struct c4iw_dev *dev,
371 struct c4iw_listen_ep *ep;
374 spin_lock_irqsave(&dev->lock, flags);
375 ep = idr_find(&dev->stid_idr, stid);
377 c4iw_get_ep(&ep->com);
378 spin_unlock_irqrestore(&dev->lock, flags);
382 void _c4iw_free_ep(struct kref *kref)
386 ep = container_of(kref, struct c4iw_ep, com.kref);
387 pr_debug("ep %p state %s\n", ep, states[ep->com.state]);
388 if (test_bit(QP_REFERENCED, &ep->com.flags))
390 if (test_bit(RELEASE_RESOURCES, &ep->com.flags)) {
391 if (ep->com.remote_addr.ss_family == AF_INET6) {
392 struct sockaddr_in6 *sin6 =
393 (struct sockaddr_in6 *)
397 ep->com.dev->rdev.lldi.ports[0],
398 (const u32 *)&sin6->sin6_addr.s6_addr,
401 cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid,
402 ep->com.local_addr.ss_family);
403 dst_release(ep->dst);
404 cxgb4_l2t_release(ep->l2t);
406 kfree_skb(ep->mpa_skb);
408 if (!skb_queue_empty(&ep->com.ep_skb_list))
409 skb_queue_purge(&ep->com.ep_skb_list);
413 static void release_ep_resources(struct c4iw_ep *ep)
415 set_bit(RELEASE_RESOURCES, &ep->com.flags);
418 * If we have a hwtid, then remove it from the idr table
419 * so lookups will no longer find this endpoint. Otherwise
420 * we have a race where one thread finds the ep ptr just
421 * before the other thread is freeing the ep memory.
425 c4iw_put_ep(&ep->com);
428 static int status2errno(int status)
433 case CPL_ERR_CONN_RESET:
435 case CPL_ERR_ARP_MISS:
436 return -EHOSTUNREACH;
437 case CPL_ERR_CONN_TIMEDOUT:
439 case CPL_ERR_TCAM_FULL:
441 case CPL_ERR_CONN_EXIST:
449 * Try and reuse skbs already allocated...
451 static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp)
453 if (skb && !skb_is_nonlinear(skb) && !skb_cloned(skb)) {
456 skb_reset_transport_header(skb);
458 skb = alloc_skb(len, gfp);
460 t4_set_arp_err_handler(skb, NULL, NULL);
464 static struct net_device *get_real_dev(struct net_device *egress_dev)
466 return rdma_vlan_dev_real_dev(egress_dev) ? : egress_dev;
469 static void arp_failure_discard(void *handle, struct sk_buff *skb)
471 pr_err("ARP failure\n");
475 static void mpa_start_arp_failure(void *handle, struct sk_buff *skb)
477 pr_err("ARP failure during MPA Negotiation - Closing Connection\n");
482 FAKE_CPL_PUT_EP_SAFE = NUM_CPL_CMDS + 0,
483 FAKE_CPL_PASS_PUT_EP_SAFE = NUM_CPL_CMDS + 1,
486 static int _put_ep_safe(struct c4iw_dev *dev, struct sk_buff *skb)
490 ep = *((struct c4iw_ep **)(skb->cb + 2 * sizeof(void *)));
491 release_ep_resources(ep);
496 static int _put_pass_ep_safe(struct c4iw_dev *dev, struct sk_buff *skb)
500 ep = *((struct c4iw_ep **)(skb->cb + 2 * sizeof(void *)));
501 c4iw_put_ep(&ep->parent_ep->com);
502 release_ep_resources(ep);
508 * Fake up a special CPL opcode and call sched() so process_work() will call
509 * _put_ep_safe() in a safe context to free the ep resources. This is needed
510 * because ARP error handlers are called in an ATOMIC context, and
511 * _c4iw_free_ep() needs to block.
513 static void queue_arp_failure_cpl(struct c4iw_ep *ep, struct sk_buff *skb,
516 struct cpl_act_establish *rpl = cplhdr(skb);
518 /* Set our special ARP_FAILURE opcode */
519 rpl->ot.opcode = cpl;
522 * Save ep in the skb->cb area, after where sched() will save the dev
525 *((struct c4iw_ep **)(skb->cb + 2 * sizeof(void *))) = ep;
526 sched(ep->com.dev, skb);
529 /* Handle an ARP failure for an accept */
530 static void pass_accept_rpl_arp_failure(void *handle, struct sk_buff *skb)
532 struct c4iw_ep *ep = handle;
534 pr_err("ARP failure during accept - tid %u - dropping connection\n",
537 __state_set(&ep->com, DEAD);
538 queue_arp_failure_cpl(ep, skb, FAKE_CPL_PASS_PUT_EP_SAFE);
542 * Handle an ARP failure for an active open.
544 static void act_open_req_arp_failure(void *handle, struct sk_buff *skb)
546 struct c4iw_ep *ep = handle;
548 pr_err("ARP failure during connect\n");
549 connect_reply_upcall(ep, -EHOSTUNREACH);
550 __state_set(&ep->com, DEAD);
551 if (ep->com.remote_addr.ss_family == AF_INET6) {
552 struct sockaddr_in6 *sin6 =
553 (struct sockaddr_in6 *)&ep->com.local_addr;
554 cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
555 (const u32 *)&sin6->sin6_addr.s6_addr, 1);
557 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid);
558 cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid);
559 queue_arp_failure_cpl(ep, skb, FAKE_CPL_PUT_EP_SAFE);
563 * Handle an ARP failure for a CPL_ABORT_REQ. Change it into a no RST variant
566 static void abort_arp_failure(void *handle, struct sk_buff *skb)
569 struct c4iw_ep *ep = handle;
570 struct c4iw_rdev *rdev = &ep->com.dev->rdev;
571 struct cpl_abort_req *req = cplhdr(skb);
573 pr_debug("rdev %p\n", rdev);
574 req->cmd = CPL_ABORT_NO_RST;
576 ret = c4iw_ofld_send(rdev, skb);
578 __state_set(&ep->com, DEAD);
579 queue_arp_failure_cpl(ep, skb, FAKE_CPL_PUT_EP_SAFE);
584 static int send_flowc(struct c4iw_ep *ep)
586 struct fw_flowc_wr *flowc;
587 struct sk_buff *skb = skb_dequeue(&ep->com.ep_skb_list);
589 u16 vlan = ep->l2t->vlan;
595 if (vlan == CPL_L2T_VLAN_NONE)
600 flowc = __skb_put(skb, FLOWC_LEN);
602 flowc->op_to_nparams = cpu_to_be32(FW_WR_OP_V(FW_FLOWC_WR) |
603 FW_FLOWC_WR_NPARAMS_V(nparams));
604 flowc->flowid_len16 = cpu_to_be32(FW_WR_LEN16_V(DIV_ROUND_UP(FLOWC_LEN,
605 16)) | FW_WR_FLOWID_V(ep->hwtid));
607 flowc->mnemval[0].mnemonic = FW_FLOWC_MNEM_PFNVFN;
608 flowc->mnemval[0].val = cpu_to_be32(FW_PFVF_CMD_PFN_V
609 (ep->com.dev->rdev.lldi.pf));
610 flowc->mnemval[1].mnemonic = FW_FLOWC_MNEM_CH;
611 flowc->mnemval[1].val = cpu_to_be32(ep->tx_chan);
612 flowc->mnemval[2].mnemonic = FW_FLOWC_MNEM_PORT;
613 flowc->mnemval[2].val = cpu_to_be32(ep->tx_chan);
614 flowc->mnemval[3].mnemonic = FW_FLOWC_MNEM_IQID;
615 flowc->mnemval[3].val = cpu_to_be32(ep->rss_qid);
616 flowc->mnemval[4].mnemonic = FW_FLOWC_MNEM_SNDNXT;
617 flowc->mnemval[4].val = cpu_to_be32(ep->snd_seq);
618 flowc->mnemval[5].mnemonic = FW_FLOWC_MNEM_RCVNXT;
619 flowc->mnemval[5].val = cpu_to_be32(ep->rcv_seq);
620 flowc->mnemval[6].mnemonic = FW_FLOWC_MNEM_SNDBUF;
621 flowc->mnemval[6].val = cpu_to_be32(ep->snd_win);
622 flowc->mnemval[7].mnemonic = FW_FLOWC_MNEM_MSS;
623 flowc->mnemval[7].val = cpu_to_be32(ep->emss);
627 pri = (vlan & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT;
628 flowc->mnemval[8].mnemonic = FW_FLOWC_MNEM_SCHEDCLASS;
629 flowc->mnemval[8].val = cpu_to_be32(pri);
631 /* Pad WR to 16 byte boundary */
632 flowc->mnemval[8].mnemonic = 0;
633 flowc->mnemval[8].val = 0;
635 for (i = 0; i < 9; i++) {
636 flowc->mnemval[i].r4[0] = 0;
637 flowc->mnemval[i].r4[1] = 0;
638 flowc->mnemval[i].r4[2] = 0;
641 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
642 return c4iw_ofld_send(&ep->com.dev->rdev, skb);
645 static int send_halfclose(struct c4iw_ep *ep)
647 struct sk_buff *skb = skb_dequeue(&ep->com.ep_skb_list);
648 u32 wrlen = roundup(sizeof(struct cpl_close_con_req), 16);
650 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
654 cxgb_mk_close_con_req(skb, wrlen, ep->hwtid, ep->txq_idx,
655 NULL, arp_failure_discard);
657 return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
660 static int send_abort(struct c4iw_ep *ep)
662 u32 wrlen = roundup(sizeof(struct cpl_abort_req), 16);
663 struct sk_buff *req_skb = skb_dequeue(&ep->com.ep_skb_list);
665 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
666 if (WARN_ON(!req_skb))
669 cxgb_mk_abort_req(req_skb, wrlen, ep->hwtid, ep->txq_idx,
670 ep, abort_arp_failure);
672 return c4iw_l2t_send(&ep->com.dev->rdev, req_skb, ep->l2t);
675 static int send_connect(struct c4iw_ep *ep)
677 struct cpl_act_open_req *req = NULL;
678 struct cpl_t5_act_open_req *t5req = NULL;
679 struct cpl_t6_act_open_req *t6req = NULL;
680 struct cpl_act_open_req6 *req6 = NULL;
681 struct cpl_t5_act_open_req6 *t5req6 = NULL;
682 struct cpl_t6_act_open_req6 *t6req6 = NULL;
686 unsigned int mtu_idx;
688 int win, sizev4, sizev6, wrlen;
689 struct sockaddr_in *la = (struct sockaddr_in *)
691 struct sockaddr_in *ra = (struct sockaddr_in *)
692 &ep->com.remote_addr;
693 struct sockaddr_in6 *la6 = (struct sockaddr_in6 *)
695 struct sockaddr_in6 *ra6 = (struct sockaddr_in6 *)
696 &ep->com.remote_addr;
698 enum chip_type adapter_type = ep->com.dev->rdev.lldi.adapter_type;
699 u32 isn = (prandom_u32() & ~7UL) - 1;
700 struct net_device *netdev;
703 netdev = ep->com.dev->rdev.lldi.ports[0];
705 switch (CHELSIO_CHIP_VERSION(adapter_type)) {
707 sizev4 = sizeof(struct cpl_act_open_req);
708 sizev6 = sizeof(struct cpl_act_open_req6);
711 sizev4 = sizeof(struct cpl_t5_act_open_req);
712 sizev6 = sizeof(struct cpl_t5_act_open_req6);
715 sizev4 = sizeof(struct cpl_t6_act_open_req);
716 sizev6 = sizeof(struct cpl_t6_act_open_req6);
719 pr_err("T%d Chip is not supported\n",
720 CHELSIO_CHIP_VERSION(adapter_type));
724 wrlen = (ep->com.remote_addr.ss_family == AF_INET) ?
725 roundup(sizev4, 16) :
728 pr_debug("ep %p atid %u\n", ep, ep->atid);
730 skb = get_skb(NULL, wrlen, GFP_KERNEL);
732 pr_err("%s - failed to alloc skb\n", __func__);
735 set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx);
737 cxgb_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx,
738 enable_tcp_timestamps,
739 (ep->com.remote_addr.ss_family == AF_INET) ? 0 : 1);
740 wscale = cxgb_compute_wscale(rcv_win);
743 * Specify the largest window that will fit in opt0. The
744 * remainder will be specified in the rx_data_ack.
746 win = ep->rcv_win >> 10;
747 if (win > RCV_BUFSIZ_M)
750 opt0 = (nocong ? NO_CONG_F : 0) |
753 WND_SCALE_V(wscale) |
755 L2T_IDX_V(ep->l2t->idx) |
756 TX_CHAN_V(ep->tx_chan) |
757 SMAC_SEL_V(ep->smac_idx) |
758 DSCP_V(ep->tos >> 2) |
759 ULP_MODE_V(ULP_MODE_TCPDDP) |
761 opt2 = RX_CHANNEL_V(0) |
762 CCTRL_ECN_V(enable_ecn) |
763 RSS_QUEUE_VALID_F | RSS_QUEUE_V(ep->rss_qid);
764 if (enable_tcp_timestamps)
765 opt2 |= TSTAMPS_EN_F;
768 if (wscale && enable_tcp_window_scaling)
769 opt2 |= WND_SCALE_EN_F;
770 if (CHELSIO_CHIP_VERSION(adapter_type) > CHELSIO_T4) {
774 opt2 |= T5_OPT_2_VALID_F;
775 opt2 |= CONG_CNTRL_V(CONG_ALG_TAHOE);
779 params = cxgb4_select_ntuple(netdev, ep->l2t);
781 if (ep->com.remote_addr.ss_family == AF_INET6)
782 cxgb4_clip_get(ep->com.dev->rdev.lldi.ports[0],
783 (const u32 *)&la6->sin6_addr.s6_addr, 1);
785 t4_set_arp_err_handler(skb, ep, act_open_req_arp_failure);
787 if (ep->com.remote_addr.ss_family == AF_INET) {
788 switch (CHELSIO_CHIP_VERSION(adapter_type)) {
790 req = skb_put(skb, wrlen);
794 t5req = skb_put(skb, wrlen);
795 INIT_TP_WR(t5req, 0);
796 req = (struct cpl_act_open_req *)t5req;
799 t6req = skb_put(skb, wrlen);
800 INIT_TP_WR(t6req, 0);
801 req = (struct cpl_act_open_req *)t6req;
802 t5req = (struct cpl_t5_act_open_req *)t6req;
805 pr_err("T%d Chip is not supported\n",
806 CHELSIO_CHIP_VERSION(adapter_type));
811 OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ,
812 ((ep->rss_qid<<14) | ep->atid)));
813 req->local_port = la->sin_port;
814 req->peer_port = ra->sin_port;
815 req->local_ip = la->sin_addr.s_addr;
816 req->peer_ip = ra->sin_addr.s_addr;
817 req->opt0 = cpu_to_be64(opt0);
819 if (is_t4(ep->com.dev->rdev.lldi.adapter_type)) {
820 req->params = cpu_to_be32(params);
821 req->opt2 = cpu_to_be32(opt2);
823 if (is_t5(ep->com.dev->rdev.lldi.adapter_type)) {
825 cpu_to_be64(FILTER_TUPLE_V(params));
826 t5req->rsvd = cpu_to_be32(isn);
827 pr_debug("snd_isn %u\n", t5req->rsvd);
828 t5req->opt2 = cpu_to_be32(opt2);
831 cpu_to_be64(FILTER_TUPLE_V(params));
832 t6req->rsvd = cpu_to_be32(isn);
833 pr_debug("snd_isn %u\n", t6req->rsvd);
834 t6req->opt2 = cpu_to_be32(opt2);
838 switch (CHELSIO_CHIP_VERSION(adapter_type)) {
840 req6 = skb_put(skb, wrlen);
844 t5req6 = skb_put(skb, wrlen);
845 INIT_TP_WR(t5req6, 0);
846 req6 = (struct cpl_act_open_req6 *)t5req6;
849 t6req6 = skb_put(skb, wrlen);
850 INIT_TP_WR(t6req6, 0);
851 req6 = (struct cpl_act_open_req6 *)t6req6;
852 t5req6 = (struct cpl_t5_act_open_req6 *)t6req6;
855 pr_err("T%d Chip is not supported\n",
856 CHELSIO_CHIP_VERSION(adapter_type));
861 OPCODE_TID(req6) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6,
862 ((ep->rss_qid<<14)|ep->atid)));
863 req6->local_port = la6->sin6_port;
864 req6->peer_port = ra6->sin6_port;
865 req6->local_ip_hi = *((__be64 *)(la6->sin6_addr.s6_addr));
866 req6->local_ip_lo = *((__be64 *)(la6->sin6_addr.s6_addr + 8));
867 req6->peer_ip_hi = *((__be64 *)(ra6->sin6_addr.s6_addr));
868 req6->peer_ip_lo = *((__be64 *)(ra6->sin6_addr.s6_addr + 8));
869 req6->opt0 = cpu_to_be64(opt0);
871 if (is_t4(ep->com.dev->rdev.lldi.adapter_type)) {
872 req6->params = cpu_to_be32(cxgb4_select_ntuple(netdev,
874 req6->opt2 = cpu_to_be32(opt2);
876 if (is_t5(ep->com.dev->rdev.lldi.adapter_type)) {
878 cpu_to_be64(FILTER_TUPLE_V(params));
879 t5req6->rsvd = cpu_to_be32(isn);
880 pr_debug("snd_isn %u\n", t5req6->rsvd);
881 t5req6->opt2 = cpu_to_be32(opt2);
884 cpu_to_be64(FILTER_TUPLE_V(params));
885 t6req6->rsvd = cpu_to_be32(isn);
886 pr_debug("snd_isn %u\n", t6req6->rsvd);
887 t6req6->opt2 = cpu_to_be32(opt2);
893 set_bit(ACT_OPEN_REQ, &ep->com.history);
894 ret = c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
896 if (ret && ep->com.remote_addr.ss_family == AF_INET6)
897 cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
898 (const u32 *)&la6->sin6_addr.s6_addr, 1);
902 static int send_mpa_req(struct c4iw_ep *ep, struct sk_buff *skb,
905 int mpalen, wrlen, ret;
906 struct fw_ofld_tx_data_wr *req;
907 struct mpa_message *mpa;
908 struct mpa_v2_conn_params mpa_v2_params;
910 pr_debug("ep %p tid %u pd_len %d\n",
911 ep, ep->hwtid, ep->plen);
913 BUG_ON(skb_cloned(skb));
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);
999 ret = c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
1003 __state_set(&ep->com, MPA_REQ_SENT);
1004 ep->mpa_attr.initiator = 1;
1005 ep->snd_seq += mpalen;
1009 static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen)
1012 struct fw_ofld_tx_data_wr *req;
1013 struct mpa_message *mpa;
1014 struct sk_buff *skb;
1015 struct mpa_v2_conn_params mpa_v2_params;
1017 pr_debug("ep %p tid %u pd_len %d\n",
1018 ep, ep->hwtid, ep->plen);
1020 mpalen = sizeof(*mpa) + plen;
1021 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn)
1022 mpalen += sizeof(struct mpa_v2_conn_params);
1023 wrlen = roundup(mpalen + sizeof *req, 16);
1025 skb = get_skb(NULL, wrlen, GFP_KERNEL);
1027 pr_err("%s - cannot alloc skb!\n", __func__);
1030 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
1032 req = skb_put_zero(skb, wrlen);
1033 req->op_to_immdlen = cpu_to_be32(
1034 FW_WR_OP_V(FW_OFLD_TX_DATA_WR) |
1036 FW_WR_IMMDLEN_V(mpalen));
1037 req->flowid_len16 = cpu_to_be32(
1038 FW_WR_FLOWID_V(ep->hwtid) |
1039 FW_WR_LEN16_V(wrlen >> 4));
1040 req->plen = cpu_to_be32(mpalen);
1041 req->tunnel_to_proxy = cpu_to_be32(
1042 FW_OFLD_TX_DATA_WR_FLUSH_F |
1043 FW_OFLD_TX_DATA_WR_SHOVE_F);
1045 mpa = (struct mpa_message *)(req + 1);
1046 memset(mpa, 0, sizeof(*mpa));
1047 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key));
1048 mpa->flags = MPA_REJECT;
1049 mpa->revision = ep->mpa_attr.version;
1050 mpa->private_data_size = htons(plen);
1052 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
1053 mpa->flags |= MPA_ENHANCED_RDMA_CONN;
1054 mpa->private_data_size = htons(ntohs(mpa->private_data_size) +
1055 sizeof (struct mpa_v2_conn_params));
1056 mpa_v2_params.ird = htons(((u16)ep->ird) |
1057 (peer2peer ? MPA_V2_PEER2PEER_MODEL :
1059 mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ?
1061 FW_RI_INIT_P2PTYPE_RDMA_WRITE ?
1062 MPA_V2_RDMA_WRITE_RTR : p2p_type ==
1063 FW_RI_INIT_P2PTYPE_READ_REQ ?
1064 MPA_V2_RDMA_READ_RTR : 0) : 0));
1065 memcpy(mpa->private_data, &mpa_v2_params,
1066 sizeof(struct mpa_v2_conn_params));
1069 memcpy(mpa->private_data +
1070 sizeof(struct mpa_v2_conn_params), pdata, plen);
1073 memcpy(mpa->private_data, pdata, plen);
1076 * Reference the mpa skb again. This ensures the data area
1077 * will remain in memory until the hw acks the tx.
1078 * Function fw4_ack() will deref it.
1081 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
1082 t4_set_arp_err_handler(skb, NULL, mpa_start_arp_failure);
1083 BUG_ON(ep->mpa_skb);
1085 ep->snd_seq += mpalen;
1086 return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
1089 static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen)
1092 struct fw_ofld_tx_data_wr *req;
1093 struct mpa_message *mpa;
1094 struct sk_buff *skb;
1095 struct mpa_v2_conn_params mpa_v2_params;
1097 pr_debug("ep %p tid %u pd_len %d\n",
1098 ep, ep->hwtid, ep->plen);
1100 mpalen = sizeof(*mpa) + plen;
1101 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn)
1102 mpalen += sizeof(struct mpa_v2_conn_params);
1103 wrlen = roundup(mpalen + sizeof *req, 16);
1105 skb = get_skb(NULL, wrlen, GFP_KERNEL);
1107 pr_err("%s - cannot alloc skb!\n", __func__);
1110 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
1112 req = skb_put_zero(skb, wrlen);
1113 req->op_to_immdlen = cpu_to_be32(
1114 FW_WR_OP_V(FW_OFLD_TX_DATA_WR) |
1116 FW_WR_IMMDLEN_V(mpalen));
1117 req->flowid_len16 = cpu_to_be32(
1118 FW_WR_FLOWID_V(ep->hwtid) |
1119 FW_WR_LEN16_V(wrlen >> 4));
1120 req->plen = cpu_to_be32(mpalen);
1121 req->tunnel_to_proxy = cpu_to_be32(
1122 FW_OFLD_TX_DATA_WR_FLUSH_F |
1123 FW_OFLD_TX_DATA_WR_SHOVE_F);
1125 mpa = (struct mpa_message *)(req + 1);
1126 memset(mpa, 0, sizeof(*mpa));
1127 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key));
1129 if (ep->mpa_attr.crc_enabled)
1130 mpa->flags |= MPA_CRC;
1131 if (ep->mpa_attr.recv_marker_enabled)
1132 mpa->flags |= MPA_MARKERS;
1133 mpa->revision = ep->mpa_attr.version;
1134 mpa->private_data_size = htons(plen);
1136 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
1137 mpa->flags |= MPA_ENHANCED_RDMA_CONN;
1138 mpa->private_data_size = htons(ntohs(mpa->private_data_size) +
1139 sizeof (struct mpa_v2_conn_params));
1140 mpa_v2_params.ird = htons((u16)ep->ird);
1141 mpa_v2_params.ord = htons((u16)ep->ord);
1142 if (peer2peer && (ep->mpa_attr.p2p_type !=
1143 FW_RI_INIT_P2PTYPE_DISABLED)) {
1144 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL);
1146 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE)
1147 mpa_v2_params.ord |=
1148 htons(MPA_V2_RDMA_WRITE_RTR);
1149 else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ)
1150 mpa_v2_params.ord |=
1151 htons(MPA_V2_RDMA_READ_RTR);
1154 memcpy(mpa->private_data, &mpa_v2_params,
1155 sizeof(struct mpa_v2_conn_params));
1158 memcpy(mpa->private_data +
1159 sizeof(struct mpa_v2_conn_params), pdata, plen);
1162 memcpy(mpa->private_data, pdata, plen);
1165 * Reference the mpa skb. This ensures the data area
1166 * will remain in memory until the hw acks the tx.
1167 * Function fw4_ack() will deref it.
1170 t4_set_arp_err_handler(skb, NULL, mpa_start_arp_failure);
1172 __state_set(&ep->com, MPA_REP_SENT);
1173 ep->snd_seq += mpalen;
1174 return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
1177 static int act_establish(struct c4iw_dev *dev, struct sk_buff *skb)
1180 struct cpl_act_establish *req = cplhdr(skb);
1181 unsigned int tid = GET_TID(req);
1182 unsigned int atid = TID_TID_G(ntohl(req->tos_atid));
1183 struct tid_info *t = dev->rdev.lldi.tids;
1186 ep = lookup_atid(t, atid);
1188 pr_debug("ep %p tid %u snd_isn %u rcv_isn %u\n", ep, tid,
1189 be32_to_cpu(req->snd_isn), be32_to_cpu(req->rcv_isn));
1191 mutex_lock(&ep->com.mutex);
1192 dst_confirm(ep->dst);
1194 /* setup the hwtid for this connection */
1196 cxgb4_insert_tid(t, ep, tid, ep->com.local_addr.ss_family);
1199 ep->snd_seq = be32_to_cpu(req->snd_isn);
1200 ep->rcv_seq = be32_to_cpu(req->rcv_isn);
1202 set_emss(ep, ntohs(req->tcp_opt));
1204 /* dealloc the atid */
1205 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, atid);
1206 cxgb4_free_atid(t, atid);
1207 set_bit(ACT_ESTAB, &ep->com.history);
1209 /* start MPA negotiation */
1210 ret = send_flowc(ep);
1213 if (ep->retry_with_mpa_v1)
1214 ret = send_mpa_req(ep, skb, 1);
1216 ret = send_mpa_req(ep, skb, mpa_rev);
1219 mutex_unlock(&ep->com.mutex);
1222 mutex_unlock(&ep->com.mutex);
1223 connect_reply_upcall(ep, -ENOMEM);
1224 c4iw_ep_disconnect(ep, 0, GFP_KERNEL);
1228 static void close_complete_upcall(struct c4iw_ep *ep, int status)
1230 struct iw_cm_event event;
1232 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
1233 memset(&event, 0, sizeof(event));
1234 event.event = IW_CM_EVENT_CLOSE;
1235 event.status = status;
1236 if (ep->com.cm_id) {
1237 pr_debug("close complete delivered ep %p cm_id %p tid %u\n",
1238 ep, ep->com.cm_id, ep->hwtid);
1239 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1240 deref_cm_id(&ep->com);
1241 set_bit(CLOSE_UPCALL, &ep->com.history);
1245 static void peer_close_upcall(struct c4iw_ep *ep)
1247 struct iw_cm_event event;
1249 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
1250 memset(&event, 0, sizeof(event));
1251 event.event = IW_CM_EVENT_DISCONNECT;
1252 if (ep->com.cm_id) {
1253 pr_debug("peer close delivered ep %p cm_id %p tid %u\n",
1254 ep, ep->com.cm_id, ep->hwtid);
1255 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1256 set_bit(DISCONN_UPCALL, &ep->com.history);
1260 static void peer_abort_upcall(struct c4iw_ep *ep)
1262 struct iw_cm_event event;
1264 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
1265 memset(&event, 0, sizeof(event));
1266 event.event = IW_CM_EVENT_CLOSE;
1267 event.status = -ECONNRESET;
1268 if (ep->com.cm_id) {
1269 pr_debug("abort delivered ep %p cm_id %p tid %u\n", ep,
1270 ep->com.cm_id, ep->hwtid);
1271 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1272 deref_cm_id(&ep->com);
1273 set_bit(ABORT_UPCALL, &ep->com.history);
1277 static void connect_reply_upcall(struct c4iw_ep *ep, int status)
1279 struct iw_cm_event event;
1281 pr_debug("ep %p tid %u status %d\n",
1282 ep, ep->hwtid, status);
1283 memset(&event, 0, sizeof(event));
1284 event.event = IW_CM_EVENT_CONNECT_REPLY;
1285 event.status = status;
1286 memcpy(&event.local_addr, &ep->com.local_addr,
1287 sizeof(ep->com.local_addr));
1288 memcpy(&event.remote_addr, &ep->com.remote_addr,
1289 sizeof(ep->com.remote_addr));
1291 if ((status == 0) || (status == -ECONNREFUSED)) {
1292 if (!ep->tried_with_mpa_v1) {
1293 /* this means MPA_v2 is used */
1294 event.ord = ep->ird;
1295 event.ird = ep->ord;
1296 event.private_data_len = ep->plen -
1297 sizeof(struct mpa_v2_conn_params);
1298 event.private_data = ep->mpa_pkt +
1299 sizeof(struct mpa_message) +
1300 sizeof(struct mpa_v2_conn_params);
1302 /* this means MPA_v1 is used */
1303 event.ord = cur_max_read_depth(ep->com.dev);
1304 event.ird = cur_max_read_depth(ep->com.dev);
1305 event.private_data_len = ep->plen;
1306 event.private_data = ep->mpa_pkt +
1307 sizeof(struct mpa_message);
1311 pr_debug("ep %p tid %u status %d\n", ep,
1313 set_bit(CONN_RPL_UPCALL, &ep->com.history);
1314 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1317 deref_cm_id(&ep->com);
1320 static int connect_request_upcall(struct c4iw_ep *ep)
1322 struct iw_cm_event event;
1325 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
1326 memset(&event, 0, sizeof(event));
1327 event.event = IW_CM_EVENT_CONNECT_REQUEST;
1328 memcpy(&event.local_addr, &ep->com.local_addr,
1329 sizeof(ep->com.local_addr));
1330 memcpy(&event.remote_addr, &ep->com.remote_addr,
1331 sizeof(ep->com.remote_addr));
1332 event.provider_data = ep;
1333 if (!ep->tried_with_mpa_v1) {
1334 /* this means MPA_v2 is used */
1335 event.ord = ep->ord;
1336 event.ird = ep->ird;
1337 event.private_data_len = ep->plen -
1338 sizeof(struct mpa_v2_conn_params);
1339 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) +
1340 sizeof(struct mpa_v2_conn_params);
1342 /* this means MPA_v1 is used. Send max supported */
1343 event.ord = cur_max_read_depth(ep->com.dev);
1344 event.ird = cur_max_read_depth(ep->com.dev);
1345 event.private_data_len = ep->plen;
1346 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message);
1348 c4iw_get_ep(&ep->com);
1349 ret = ep->parent_ep->com.cm_id->event_handler(ep->parent_ep->com.cm_id,
1352 c4iw_put_ep(&ep->com);
1353 set_bit(CONNREQ_UPCALL, &ep->com.history);
1354 c4iw_put_ep(&ep->parent_ep->com);
1358 static void established_upcall(struct c4iw_ep *ep)
1360 struct iw_cm_event event;
1362 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
1363 memset(&event, 0, sizeof(event));
1364 event.event = IW_CM_EVENT_ESTABLISHED;
1365 event.ird = ep->ord;
1366 event.ord = ep->ird;
1367 if (ep->com.cm_id) {
1368 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
1369 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1370 set_bit(ESTAB_UPCALL, &ep->com.history);
1374 static int update_rx_credits(struct c4iw_ep *ep, u32 credits)
1376 struct sk_buff *skb;
1377 u32 wrlen = roundup(sizeof(struct cpl_rx_data_ack), 16);
1380 pr_debug("ep %p tid %u credits %u\n",
1381 ep, ep->hwtid, credits);
1382 skb = get_skb(NULL, wrlen, GFP_KERNEL);
1384 pr_err("update_rx_credits - cannot alloc skb!\n");
1389 * If we couldn't specify the entire rcv window at connection setup
1390 * due to the limit in the number of bits in the RCV_BUFSIZ field,
1391 * then add the overage in to the credits returned.
1393 if (ep->rcv_win > RCV_BUFSIZ_M * 1024)
1394 credits += ep->rcv_win - RCV_BUFSIZ_M * 1024;
1396 credit_dack = credits | RX_FORCE_ACK_F | RX_DACK_CHANGE_F |
1397 RX_DACK_MODE_V(dack_mode);
1399 cxgb_mk_rx_data_ack(skb, wrlen, ep->hwtid, ep->ctrlq_idx,
1402 c4iw_ofld_send(&ep->com.dev->rdev, skb);
1406 #define RELAXED_IRD_NEGOTIATION 1
1409 * process_mpa_reply - process streaming mode MPA reply
1413 * 0 upon success indicating a connect request was delivered to the ULP
1414 * or the mpa request is incomplete but valid so far.
1416 * 1 if a failure requires the caller to close the connection.
1418 * 2 if a failure requires the caller to abort the connection.
1420 static int process_mpa_reply(struct c4iw_ep *ep, struct sk_buff *skb)
1422 struct mpa_message *mpa;
1423 struct mpa_v2_conn_params *mpa_v2_params;
1425 u16 resp_ird, resp_ord;
1426 u8 rtr_mismatch = 0, insuff_ird = 0;
1427 struct c4iw_qp_attributes attrs;
1428 enum c4iw_qp_attr_mask mask;
1432 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
1435 * If we get more than the supported amount of private data
1436 * then we must fail this connection.
1438 if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) {
1440 goto err_stop_timer;
1444 * copy the new data into our accumulation buffer.
1446 skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]),
1448 ep->mpa_pkt_len += skb->len;
1451 * if we don't even have the mpa message, then bail.
1453 if (ep->mpa_pkt_len < sizeof(*mpa))
1455 mpa = (struct mpa_message *) ep->mpa_pkt;
1457 /* Validate MPA header. */
1458 if (mpa->revision > mpa_rev) {
1459 pr_err("%s MPA version mismatch. Local = %d, Received = %d\n",
1460 __func__, mpa_rev, mpa->revision);
1462 goto err_stop_timer;
1464 if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) {
1466 goto err_stop_timer;
1469 plen = ntohs(mpa->private_data_size);
1472 * Fail if there's too much private data.
1474 if (plen > MPA_MAX_PRIVATE_DATA) {
1476 goto err_stop_timer;
1480 * If plen does not account for pkt size
1482 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) {
1484 goto err_stop_timer;
1487 ep->plen = (u8) plen;
1490 * If we don't have all the pdata yet, then bail.
1491 * We'll continue process when more data arrives.
1493 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen))
1496 if (mpa->flags & MPA_REJECT) {
1497 err = -ECONNREFUSED;
1498 goto err_stop_timer;
1502 * Stop mpa timer. If it expired, then
1503 * we ignore the MPA reply. process_timeout()
1504 * will abort the connection.
1506 if (stop_ep_timer(ep))
1510 * If we get here we have accumulated the entire mpa
1511 * start reply message including private data. And
1512 * the MPA header is valid.
1514 __state_set(&ep->com, FPDU_MODE);
1515 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0;
1516 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0;
1517 ep->mpa_attr.version = mpa->revision;
1518 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
1520 if (mpa->revision == 2) {
1521 ep->mpa_attr.enhanced_rdma_conn =
1522 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0;
1523 if (ep->mpa_attr.enhanced_rdma_conn) {
1524 mpa_v2_params = (struct mpa_v2_conn_params *)
1525 (ep->mpa_pkt + sizeof(*mpa));
1526 resp_ird = ntohs(mpa_v2_params->ird) &
1527 MPA_V2_IRD_ORD_MASK;
1528 resp_ord = ntohs(mpa_v2_params->ord) &
1529 MPA_V2_IRD_ORD_MASK;
1530 pr_debug("responder ird %u ord %u ep ird %u ord %u\n",
1531 resp_ird, resp_ord, ep->ird, ep->ord);
1534 * This is a double-check. Ideally, below checks are
1535 * not required since ird/ord stuff has been taken
1536 * care of in c4iw_accept_cr
1538 if (ep->ird < resp_ord) {
1539 if (RELAXED_IRD_NEGOTIATION && resp_ord <=
1540 ep->com.dev->rdev.lldi.max_ordird_qp)
1544 } else if (ep->ird > resp_ord) {
1547 if (ep->ord > resp_ird) {
1548 if (RELAXED_IRD_NEGOTIATION)
1559 if (ntohs(mpa_v2_params->ird) &
1560 MPA_V2_PEER2PEER_MODEL) {
1561 if (ntohs(mpa_v2_params->ord) &
1562 MPA_V2_RDMA_WRITE_RTR)
1563 ep->mpa_attr.p2p_type =
1564 FW_RI_INIT_P2PTYPE_RDMA_WRITE;
1565 else if (ntohs(mpa_v2_params->ord) &
1566 MPA_V2_RDMA_READ_RTR)
1567 ep->mpa_attr.p2p_type =
1568 FW_RI_INIT_P2PTYPE_READ_REQ;
1571 } else if (mpa->revision == 1)
1573 ep->mpa_attr.p2p_type = p2p_type;
1575 pr_debug("crc_enabled=%d, recv_marker_enabled=%d, xmit_marker_enabled=%d, version=%d p2p_type=%d local-p2p_type = %d\n",
1576 ep->mpa_attr.crc_enabled,
1577 ep->mpa_attr.recv_marker_enabled,
1578 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version,
1579 ep->mpa_attr.p2p_type, p2p_type);
1582 * If responder's RTR does not match with that of initiator, assign
1583 * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not
1584 * generated when moving QP to RTS state.
1585 * A TERM message will be sent after QP has moved to RTS state
1587 if ((ep->mpa_attr.version == 2) && peer2peer &&
1588 (ep->mpa_attr.p2p_type != p2p_type)) {
1589 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
1593 attrs.mpa_attr = ep->mpa_attr;
1594 attrs.max_ird = ep->ird;
1595 attrs.max_ord = ep->ord;
1596 attrs.llp_stream_handle = ep;
1597 attrs.next_state = C4IW_QP_STATE_RTS;
1599 mask = C4IW_QP_ATTR_NEXT_STATE |
1600 C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR |
1601 C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD;
1603 /* bind QP and TID with INIT_WR */
1604 err = c4iw_modify_qp(ep->com.qp->rhp,
1605 ep->com.qp, mask, &attrs, 1);
1610 * If responder's RTR requirement did not match with what initiator
1611 * supports, generate TERM message
1614 pr_err("%s: RTR mismatch, sending TERM\n", __func__);
1615 attrs.layer_etype = LAYER_MPA | DDP_LLP;
1616 attrs.ecode = MPA_NOMATCH_RTR;
1617 attrs.next_state = C4IW_QP_STATE_TERMINATE;
1618 attrs.send_term = 1;
1619 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
1620 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
1627 * Generate TERM if initiator IRD is not sufficient for responder
1628 * provided ORD. Currently, we do the same behaviour even when
1629 * responder provided IRD is also not sufficient as regards to
1633 pr_err("%s: Insufficient IRD, sending TERM\n", __func__);
1634 attrs.layer_etype = LAYER_MPA | DDP_LLP;
1635 attrs.ecode = MPA_INSUFF_IRD;
1636 attrs.next_state = C4IW_QP_STATE_TERMINATE;
1637 attrs.send_term = 1;
1638 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
1639 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
1650 connect_reply_upcall(ep, err);
1655 * process_mpa_request - process streaming mode MPA request
1659 * 0 upon success indicating a connect request was delivered to the ULP
1660 * or the mpa request is incomplete but valid so far.
1662 * 1 if a failure requires the caller to close the connection.
1664 * 2 if a failure requires the caller to abort the connection.
1666 static int process_mpa_request(struct c4iw_ep *ep, struct sk_buff *skb)
1668 struct mpa_message *mpa;
1669 struct mpa_v2_conn_params *mpa_v2_params;
1672 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
1675 * If we get more than the supported amount of private data
1676 * then we must fail this connection.
1678 if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt))
1679 goto err_stop_timer;
1681 pr_debug("enter (%s line %u)\n", __FILE__, __LINE__);
1684 * Copy the new data into our accumulation buffer.
1686 skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]),
1688 ep->mpa_pkt_len += skb->len;
1691 * If we don't even have the mpa message, then bail.
1692 * We'll continue process when more data arrives.
1694 if (ep->mpa_pkt_len < sizeof(*mpa))
1697 pr_debug("enter (%s line %u)\n", __FILE__, __LINE__);
1698 mpa = (struct mpa_message *) ep->mpa_pkt;
1701 * Validate MPA Header.
1703 if (mpa->revision > mpa_rev) {
1704 pr_err("%s MPA version mismatch. Local = %d, Received = %d\n",
1705 __func__, mpa_rev, mpa->revision);
1706 goto err_stop_timer;
1709 if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)))
1710 goto err_stop_timer;
1712 plen = ntohs(mpa->private_data_size);
1715 * Fail if there's too much private data.
1717 if (plen > MPA_MAX_PRIVATE_DATA)
1718 goto err_stop_timer;
1721 * If plen does not account for pkt size
1723 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen))
1724 goto err_stop_timer;
1725 ep->plen = (u8) plen;
1728 * If we don't have all the pdata yet, then bail.
1730 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen))
1734 * If we get here we have accumulated the entire mpa
1735 * start reply message including private data.
1737 ep->mpa_attr.initiator = 0;
1738 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0;
1739 ep->mpa_attr.recv_marker_enabled = markers_enabled;
1740 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0;
1741 ep->mpa_attr.version = mpa->revision;
1742 if (mpa->revision == 1)
1743 ep->tried_with_mpa_v1 = 1;
1744 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
1746 if (mpa->revision == 2) {
1747 ep->mpa_attr.enhanced_rdma_conn =
1748 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0;
1749 if (ep->mpa_attr.enhanced_rdma_conn) {
1750 mpa_v2_params = (struct mpa_v2_conn_params *)
1751 (ep->mpa_pkt + sizeof(*mpa));
1752 ep->ird = ntohs(mpa_v2_params->ird) &
1753 MPA_V2_IRD_ORD_MASK;
1754 ep->ird = min_t(u32, ep->ird,
1755 cur_max_read_depth(ep->com.dev));
1756 ep->ord = ntohs(mpa_v2_params->ord) &
1757 MPA_V2_IRD_ORD_MASK;
1758 ep->ord = min_t(u32, ep->ord,
1759 cur_max_read_depth(ep->com.dev));
1760 pr_debug("initiator ird %u ord %u\n",
1762 if (ntohs(mpa_v2_params->ird) & MPA_V2_PEER2PEER_MODEL)
1764 if (ntohs(mpa_v2_params->ord) &
1765 MPA_V2_RDMA_WRITE_RTR)
1766 ep->mpa_attr.p2p_type =
1767 FW_RI_INIT_P2PTYPE_RDMA_WRITE;
1768 else if (ntohs(mpa_v2_params->ord) &
1769 MPA_V2_RDMA_READ_RTR)
1770 ep->mpa_attr.p2p_type =
1771 FW_RI_INIT_P2PTYPE_READ_REQ;
1774 } else if (mpa->revision == 1)
1776 ep->mpa_attr.p2p_type = p2p_type;
1778 pr_debug("crc_enabled=%d, recv_marker_enabled=%d, xmit_marker_enabled=%d, version=%d p2p_type=%d\n",
1779 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled,
1780 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version,
1781 ep->mpa_attr.p2p_type);
1783 __state_set(&ep->com, MPA_REQ_RCVD);
1786 mutex_lock_nested(&ep->parent_ep->com.mutex, SINGLE_DEPTH_NESTING);
1787 if (ep->parent_ep->com.state != DEAD) {
1788 if (connect_request_upcall(ep))
1789 goto err_unlock_parent;
1791 goto err_unlock_parent;
1793 mutex_unlock(&ep->parent_ep->com.mutex);
1797 mutex_unlock(&ep->parent_ep->com.mutex);
1800 (void)stop_ep_timer(ep);
1805 static int rx_data(struct c4iw_dev *dev, struct sk_buff *skb)
1808 struct cpl_rx_data *hdr = cplhdr(skb);
1809 unsigned int dlen = ntohs(hdr->len);
1810 unsigned int tid = GET_TID(hdr);
1811 __u8 status = hdr->status;
1814 ep = get_ep_from_tid(dev, tid);
1817 pr_debug("ep %p tid %u dlen %u\n", ep, ep->hwtid, dlen);
1818 skb_pull(skb, sizeof(*hdr));
1819 skb_trim(skb, dlen);
1820 mutex_lock(&ep->com.mutex);
1822 switch (ep->com.state) {
1824 update_rx_credits(ep, dlen);
1825 ep->rcv_seq += dlen;
1826 disconnect = process_mpa_reply(ep, skb);
1829 update_rx_credits(ep, dlen);
1830 ep->rcv_seq += dlen;
1831 disconnect = process_mpa_request(ep, skb);
1834 struct c4iw_qp_attributes attrs;
1836 update_rx_credits(ep, dlen);
1837 BUG_ON(!ep->com.qp);
1839 pr_err("%s Unexpected streaming data." \
1840 " qpid %u ep %p state %d tid %u status %d\n",
1841 __func__, ep->com.qp->wq.sq.qid, ep,
1842 ep->com.state, ep->hwtid, status);
1843 attrs.next_state = C4IW_QP_STATE_TERMINATE;
1844 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
1845 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
1852 mutex_unlock(&ep->com.mutex);
1854 c4iw_ep_disconnect(ep, disconnect == 2, GFP_KERNEL);
1855 c4iw_put_ep(&ep->com);
1859 static int abort_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
1862 struct cpl_abort_rpl_rss *rpl = cplhdr(skb);
1864 unsigned int tid = GET_TID(rpl);
1866 ep = get_ep_from_tid(dev, tid);
1868 pr_warn("Abort rpl to freed endpoint\n");
1871 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
1872 mutex_lock(&ep->com.mutex);
1873 switch (ep->com.state) {
1875 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
1876 __state_set(&ep->com, DEAD);
1880 pr_err("%s ep %p state %d\n", __func__, ep, ep->com.state);
1883 mutex_unlock(&ep->com.mutex);
1886 release_ep_resources(ep);
1887 c4iw_put_ep(&ep->com);
1891 static int send_fw_act_open_req(struct c4iw_ep *ep, unsigned int atid)
1893 struct sk_buff *skb;
1894 struct fw_ofld_connection_wr *req;
1895 unsigned int mtu_idx;
1897 struct sockaddr_in *sin;
1900 skb = get_skb(NULL, sizeof(*req), GFP_KERNEL);
1901 req = __skb_put_zero(skb, sizeof(*req));
1902 req->op_compl = htonl(WR_OP_V(FW_OFLD_CONNECTION_WR));
1903 req->len16_pkd = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*req), 16)));
1904 req->le.filter = cpu_to_be32(cxgb4_select_ntuple(
1905 ep->com.dev->rdev.lldi.ports[0],
1907 sin = (struct sockaddr_in *)&ep->com.local_addr;
1908 req->le.lport = sin->sin_port;
1909 req->le.u.ipv4.lip = sin->sin_addr.s_addr;
1910 sin = (struct sockaddr_in *)&ep->com.remote_addr;
1911 req->le.pport = sin->sin_port;
1912 req->le.u.ipv4.pip = sin->sin_addr.s_addr;
1913 req->tcb.t_state_to_astid =
1914 htonl(FW_OFLD_CONNECTION_WR_T_STATE_V(TCP_SYN_SENT) |
1915 FW_OFLD_CONNECTION_WR_ASTID_V(atid));
1916 req->tcb.cplrxdataack_cplpassacceptrpl =
1917 htons(FW_OFLD_CONNECTION_WR_CPLRXDATAACK_F);
1918 req->tcb.tx_max = (__force __be32) jiffies;
1919 req->tcb.rcv_adv = htons(1);
1920 cxgb_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx,
1921 enable_tcp_timestamps,
1922 (ep->com.remote_addr.ss_family == AF_INET) ? 0 : 1);
1923 wscale = cxgb_compute_wscale(rcv_win);
1926 * Specify the largest window that will fit in opt0. The
1927 * remainder will be specified in the rx_data_ack.
1929 win = ep->rcv_win >> 10;
1930 if (win > RCV_BUFSIZ_M)
1933 req->tcb.opt0 = (__force __be64) (TCAM_BYPASS_F |
1934 (nocong ? NO_CONG_F : 0) |
1937 WND_SCALE_V(wscale) |
1938 MSS_IDX_V(mtu_idx) |
1939 L2T_IDX_V(ep->l2t->idx) |
1940 TX_CHAN_V(ep->tx_chan) |
1941 SMAC_SEL_V(ep->smac_idx) |
1942 DSCP_V(ep->tos >> 2) |
1943 ULP_MODE_V(ULP_MODE_TCPDDP) |
1945 req->tcb.opt2 = (__force __be32) (PACE_V(1) |
1946 TX_QUEUE_V(ep->com.dev->rdev.lldi.tx_modq[ep->tx_chan]) |
1948 CCTRL_ECN_V(enable_ecn) |
1949 RSS_QUEUE_VALID_F | RSS_QUEUE_V(ep->rss_qid));
1950 if (enable_tcp_timestamps)
1951 req->tcb.opt2 |= (__force __be32)TSTAMPS_EN_F;
1952 if (enable_tcp_sack)
1953 req->tcb.opt2 |= (__force __be32)SACK_EN_F;
1954 if (wscale && enable_tcp_window_scaling)
1955 req->tcb.opt2 |= (__force __be32)WND_SCALE_EN_F;
1956 req->tcb.opt0 = cpu_to_be64((__force u64)req->tcb.opt0);
1957 req->tcb.opt2 = cpu_to_be32((__force u32)req->tcb.opt2);
1958 set_wr_txq(skb, CPL_PRIORITY_CONTROL, ep->ctrlq_idx);
1959 set_bit(ACT_OFLD_CONN, &ep->com.history);
1960 return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
1964 * Some of the error codes above implicitly indicate that there is no TID
1965 * allocated with the result of an ACT_OPEN. We use this predicate to make
1968 static inline int act_open_has_tid(int status)
1970 return (status != CPL_ERR_TCAM_PARITY &&
1971 status != CPL_ERR_TCAM_MISS &&
1972 status != CPL_ERR_TCAM_FULL &&
1973 status != CPL_ERR_CONN_EXIST_SYNRECV &&
1974 status != CPL_ERR_CONN_EXIST);
1977 static char *neg_adv_str(unsigned int status)
1980 case CPL_ERR_RTX_NEG_ADVICE:
1981 return "Retransmit timeout";
1982 case CPL_ERR_PERSIST_NEG_ADVICE:
1983 return "Persist timeout";
1984 case CPL_ERR_KEEPALV_NEG_ADVICE:
1985 return "Keepalive timeout";
1991 static void set_tcp_window(struct c4iw_ep *ep, struct port_info *pi)
1993 ep->snd_win = snd_win;
1994 ep->rcv_win = rcv_win;
1995 pr_debug("snd_win %d rcv_win %d\n",
1996 ep->snd_win, ep->rcv_win);
1999 #define ACT_OPEN_RETRY_COUNT 2
2001 static int import_ep(struct c4iw_ep *ep, int iptype, __u8 *peer_ip,
2002 struct dst_entry *dst, struct c4iw_dev *cdev,
2003 bool clear_mpa_v1, enum chip_type adapter_type, u8 tos)
2005 struct neighbour *n;
2007 struct net_device *pdev;
2009 n = dst_neigh_lookup(dst, peer_ip);
2015 if (n->dev->flags & IFF_LOOPBACK) {
2017 pdev = ip_dev_find(&init_net, *(__be32 *)peer_ip);
2018 else if (IS_ENABLED(CONFIG_IPV6))
2019 for_each_netdev(&init_net, pdev) {
2020 if (ipv6_chk_addr(&init_net,
2021 (struct in6_addr *)peer_ip,
2032 ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t,
2033 n, pdev, rt_tos2priority(tos));
2038 ep->mtu = pdev->mtu;
2039 ep->tx_chan = cxgb4_port_chan(pdev);
2040 ep->smac_idx = cxgb4_tp_smt_idx(adapter_type,
2041 cxgb4_port_viid(pdev));
2042 step = cdev->rdev.lldi.ntxq /
2043 cdev->rdev.lldi.nchan;
2044 ep->txq_idx = cxgb4_port_idx(pdev) * step;
2045 step = cdev->rdev.lldi.nrxq /
2046 cdev->rdev.lldi.nchan;
2047 ep->ctrlq_idx = cxgb4_port_idx(pdev);
2048 ep->rss_qid = cdev->rdev.lldi.rxq_ids[
2049 cxgb4_port_idx(pdev) * step];
2050 set_tcp_window(ep, (struct port_info *)netdev_priv(pdev));
2053 pdev = get_real_dev(n->dev);
2054 ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t,
2058 ep->mtu = dst_mtu(dst);
2059 ep->tx_chan = cxgb4_port_chan(pdev);
2060 ep->smac_idx = cxgb4_tp_smt_idx(adapter_type,
2061 cxgb4_port_viid(pdev));
2062 step = cdev->rdev.lldi.ntxq /
2063 cdev->rdev.lldi.nchan;
2064 ep->txq_idx = cxgb4_port_idx(pdev) * step;
2065 ep->ctrlq_idx = cxgb4_port_idx(pdev);
2066 step = cdev->rdev.lldi.nrxq /
2067 cdev->rdev.lldi.nchan;
2068 ep->rss_qid = cdev->rdev.lldi.rxq_ids[
2069 cxgb4_port_idx(pdev) * step];
2070 set_tcp_window(ep, (struct port_info *)netdev_priv(pdev));
2073 ep->retry_with_mpa_v1 = 0;
2074 ep->tried_with_mpa_v1 = 0;
2086 static int c4iw_reconnect(struct c4iw_ep *ep)
2090 struct sockaddr_in *laddr = (struct sockaddr_in *)
2091 &ep->com.cm_id->m_local_addr;
2092 struct sockaddr_in *raddr = (struct sockaddr_in *)
2093 &ep->com.cm_id->m_remote_addr;
2094 struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *)
2095 &ep->com.cm_id->m_local_addr;
2096 struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)
2097 &ep->com.cm_id->m_remote_addr;
2101 pr_debug("qp %p cm_id %p\n", ep->com.qp, ep->com.cm_id);
2102 init_timer(&ep->timer);
2103 c4iw_init_wr_wait(&ep->com.wr_wait);
2105 /* When MPA revision is different on nodes, the node with MPA_rev=2
2106 * tries to reconnect with MPA_rev 1 for the same EP through
2107 * c4iw_reconnect(), where the same EP is assigned with new tid for
2108 * further connection establishment. As we are using the same EP pointer
2109 * for reconnect, few skbs are used during the previous c4iw_connect(),
2110 * which leaves the EP with inadequate skbs for further
2111 * c4iw_reconnect(), Further causing an assert BUG_ON() due to empty
2112 * skb_list() during peer_abort(). Allocate skbs which is already used.
2114 size = (CN_MAX_CON_BUF - skb_queue_len(&ep->com.ep_skb_list));
2115 if (alloc_ep_skb_list(&ep->com.ep_skb_list, size)) {
2121 * Allocate an active TID to initiate a TCP connection.
2123 ep->atid = cxgb4_alloc_atid(ep->com.dev->rdev.lldi.tids, ep);
2124 if (ep->atid == -1) {
2125 pr_err("%s - cannot alloc atid\n", __func__);
2129 insert_handle(ep->com.dev, &ep->com.dev->atid_idr, ep, ep->atid);
2132 if (ep->com.cm_id->m_local_addr.ss_family == AF_INET) {
2133 ep->dst = cxgb_find_route(&ep->com.dev->rdev.lldi, get_real_dev,
2134 laddr->sin_addr.s_addr,
2135 raddr->sin_addr.s_addr,
2137 raddr->sin_port, ep->com.cm_id->tos);
2139 ra = (__u8 *)&raddr->sin_addr;
2141 ep->dst = cxgb_find_route6(&ep->com.dev->rdev.lldi,
2143 laddr6->sin6_addr.s6_addr,
2144 raddr6->sin6_addr.s6_addr,
2146 raddr6->sin6_port, 0,
2147 raddr6->sin6_scope_id);
2149 ra = (__u8 *)&raddr6->sin6_addr;
2152 pr_err("%s - cannot find route\n", __func__);
2153 err = -EHOSTUNREACH;
2156 err = import_ep(ep, iptype, ra, ep->dst, ep->com.dev, false,
2157 ep->com.dev->rdev.lldi.adapter_type,
2158 ep->com.cm_id->tos);
2160 pr_err("%s - cannot alloc l2e\n", __func__);
2164 pr_debug("txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n",
2165 ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid,
2168 state_set(&ep->com, CONNECTING);
2169 ep->tos = ep->com.cm_id->tos;
2171 /* send connect request to rnic */
2172 err = send_connect(ep);
2176 cxgb4_l2t_release(ep->l2t);
2178 dst_release(ep->dst);
2180 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid);
2181 cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid);
2184 * remember to send notification to upper layer.
2185 * We are in here so the upper layer is not aware that this is
2186 * re-connect attempt and so, upper layer is still waiting for
2187 * response of 1st connect request.
2189 connect_reply_upcall(ep, -ECONNRESET);
2191 c4iw_put_ep(&ep->com);
2196 static int act_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
2199 struct cpl_act_open_rpl *rpl = cplhdr(skb);
2200 unsigned int atid = TID_TID_G(AOPEN_ATID_G(
2201 ntohl(rpl->atid_status)));
2202 struct tid_info *t = dev->rdev.lldi.tids;
2203 int status = AOPEN_STATUS_G(ntohl(rpl->atid_status));
2204 struct sockaddr_in *la;
2205 struct sockaddr_in *ra;
2206 struct sockaddr_in6 *la6;
2207 struct sockaddr_in6 *ra6;
2210 ep = lookup_atid(t, atid);
2211 la = (struct sockaddr_in *)&ep->com.local_addr;
2212 ra = (struct sockaddr_in *)&ep->com.remote_addr;
2213 la6 = (struct sockaddr_in6 *)&ep->com.local_addr;
2214 ra6 = (struct sockaddr_in6 *)&ep->com.remote_addr;
2216 pr_debug("ep %p atid %u status %u errno %d\n", ep, atid,
2217 status, status2errno(status));
2219 if (cxgb_is_neg_adv(status)) {
2220 pr_debug("Connection problems for atid %u status %u (%s)\n",
2221 atid, status, neg_adv_str(status));
2222 ep->stats.connect_neg_adv++;
2223 mutex_lock(&dev->rdev.stats.lock);
2224 dev->rdev.stats.neg_adv++;
2225 mutex_unlock(&dev->rdev.stats.lock);
2229 set_bit(ACT_OPEN_RPL, &ep->com.history);
2232 * Log interesting failures.
2235 case CPL_ERR_CONN_RESET:
2236 case CPL_ERR_CONN_TIMEDOUT:
2238 case CPL_ERR_TCAM_FULL:
2239 mutex_lock(&dev->rdev.stats.lock);
2240 dev->rdev.stats.tcam_full++;
2241 mutex_unlock(&dev->rdev.stats.lock);
2242 if (ep->com.local_addr.ss_family == AF_INET &&
2243 dev->rdev.lldi.enable_fw_ofld_conn) {
2244 ret = send_fw_act_open_req(ep, TID_TID_G(AOPEN_ATID_G(
2245 ntohl(rpl->atid_status))));
2251 case CPL_ERR_CONN_EXIST:
2252 if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) {
2253 set_bit(ACT_RETRY_INUSE, &ep->com.history);
2254 if (ep->com.remote_addr.ss_family == AF_INET6) {
2255 struct sockaddr_in6 *sin6 =
2256 (struct sockaddr_in6 *)
2257 &ep->com.local_addr;
2259 ep->com.dev->rdev.lldi.ports[0],
2261 &sin6->sin6_addr.s6_addr, 1);
2263 remove_handle(ep->com.dev, &ep->com.dev->atid_idr,
2265 cxgb4_free_atid(t, atid);
2266 dst_release(ep->dst);
2267 cxgb4_l2t_release(ep->l2t);
2273 if (ep->com.local_addr.ss_family == AF_INET) {
2274 pr_info("Active open failure - atid %u status %u errno %d %pI4:%u->%pI4:%u\n",
2275 atid, status, status2errno(status),
2276 &la->sin_addr.s_addr, ntohs(la->sin_port),
2277 &ra->sin_addr.s_addr, ntohs(ra->sin_port));
2279 pr_info("Active open failure - atid %u status %u errno %d %pI6:%u->%pI6:%u\n",
2280 atid, status, status2errno(status),
2281 la6->sin6_addr.s6_addr, ntohs(la6->sin6_port),
2282 ra6->sin6_addr.s6_addr, ntohs(ra6->sin6_port));
2288 connect_reply_upcall(ep, status2errno(status));
2289 state_set(&ep->com, DEAD);
2291 if (ep->com.remote_addr.ss_family == AF_INET6) {
2292 struct sockaddr_in6 *sin6 =
2293 (struct sockaddr_in6 *)&ep->com.local_addr;
2294 cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
2295 (const u32 *)&sin6->sin6_addr.s6_addr, 1);
2297 if (status && act_open_has_tid(status))
2298 cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, GET_TID(rpl),
2299 ep->com.local_addr.ss_family);
2301 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, atid);
2302 cxgb4_free_atid(t, atid);
2303 dst_release(ep->dst);
2304 cxgb4_l2t_release(ep->l2t);
2305 c4iw_put_ep(&ep->com);
2310 static int pass_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
2312 struct cpl_pass_open_rpl *rpl = cplhdr(skb);
2313 unsigned int stid = GET_TID(rpl);
2314 struct c4iw_listen_ep *ep = get_ep_from_stid(dev, stid);
2317 pr_warn("%s stid %d lookup failure!\n", __func__, stid);
2320 pr_debug("ep %p status %d error %d\n", ep,
2321 rpl->status, status2errno(rpl->status));
2322 c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status));
2323 c4iw_put_ep(&ep->com);
2328 static int close_listsrv_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
2330 struct cpl_close_listsvr_rpl *rpl = cplhdr(skb);
2331 unsigned int stid = GET_TID(rpl);
2332 struct c4iw_listen_ep *ep = get_ep_from_stid(dev, stid);
2335 pr_warn("%s stid %d lookup failure!\n", __func__, stid);
2338 pr_debug("ep %p\n", ep);
2339 c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status));
2340 c4iw_put_ep(&ep->com);
2345 static int accept_cr(struct c4iw_ep *ep, struct sk_buff *skb,
2346 struct cpl_pass_accept_req *req)
2348 struct cpl_pass_accept_rpl *rpl;
2349 unsigned int mtu_idx;
2353 struct cpl_t5_pass_accept_rpl *rpl5 = NULL;
2355 enum chip_type adapter_type = ep->com.dev->rdev.lldi.adapter_type;
2357 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
2358 BUG_ON(skb_cloned(skb));
2362 if (!is_t4(adapter_type)) {
2363 skb_trim(skb, roundup(sizeof(*rpl5), 16));
2365 INIT_TP_WR(rpl5, ep->hwtid);
2367 skb_trim(skb, sizeof(*rpl));
2368 INIT_TP_WR(rpl, ep->hwtid);
2370 OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL,
2373 cxgb_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx,
2374 enable_tcp_timestamps && req->tcpopt.tstamp,
2375 (ep->com.remote_addr.ss_family == AF_INET) ? 0 : 1);
2376 wscale = cxgb_compute_wscale(rcv_win);
2379 * Specify the largest window that will fit in opt0. The
2380 * remainder will be specified in the rx_data_ack.
2382 win = ep->rcv_win >> 10;
2383 if (win > RCV_BUFSIZ_M)
2385 opt0 = (nocong ? NO_CONG_F : 0) |
2388 WND_SCALE_V(wscale) |
2389 MSS_IDX_V(mtu_idx) |
2390 L2T_IDX_V(ep->l2t->idx) |
2391 TX_CHAN_V(ep->tx_chan) |
2392 SMAC_SEL_V(ep->smac_idx) |
2393 DSCP_V(ep->tos >> 2) |
2394 ULP_MODE_V(ULP_MODE_TCPDDP) |
2396 opt2 = RX_CHANNEL_V(0) |
2397 RSS_QUEUE_VALID_F | RSS_QUEUE_V(ep->rss_qid);
2399 if (enable_tcp_timestamps && req->tcpopt.tstamp)
2400 opt2 |= TSTAMPS_EN_F;
2401 if (enable_tcp_sack && req->tcpopt.sack)
2403 if (wscale && enable_tcp_window_scaling)
2404 opt2 |= WND_SCALE_EN_F;
2406 const struct tcphdr *tcph;
2407 u32 hlen = ntohl(req->hdr_len);
2409 if (CHELSIO_CHIP_VERSION(adapter_type) <= CHELSIO_T5)
2410 tcph = (const void *)(req + 1) + ETH_HDR_LEN_G(hlen) +
2413 tcph = (const void *)(req + 1) +
2414 T6_ETH_HDR_LEN_G(hlen) + T6_IP_HDR_LEN_G(hlen);
2415 if (tcph->ece && tcph->cwr)
2416 opt2 |= CCTRL_ECN_V(1);
2418 if (CHELSIO_CHIP_VERSION(adapter_type) > CHELSIO_T4) {
2419 u32 isn = (prandom_u32() & ~7UL) - 1;
2420 opt2 |= T5_OPT_2_VALID_F;
2421 opt2 |= CONG_CNTRL_V(CONG_ALG_TAHOE);
2424 memset(&rpl5->iss, 0, roundup(sizeof(*rpl5)-sizeof(*rpl), 16));
2427 rpl5->iss = cpu_to_be32(isn);
2428 pr_debug("iss %u\n", be32_to_cpu(rpl5->iss));
2431 rpl->opt0 = cpu_to_be64(opt0);
2432 rpl->opt2 = cpu_to_be32(opt2);
2433 set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx);
2434 t4_set_arp_err_handler(skb, ep, pass_accept_rpl_arp_failure);
2436 return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
2439 static void reject_cr(struct c4iw_dev *dev, u32 hwtid, struct sk_buff *skb)
2441 pr_debug("c4iw_dev %p tid %u\n", dev, hwtid);
2442 BUG_ON(skb_cloned(skb));
2443 skb_trim(skb, sizeof(struct cpl_tid_release));
2444 release_tid(&dev->rdev, hwtid, skb);
2448 static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
2450 struct c4iw_ep *child_ep = NULL, *parent_ep;
2451 struct cpl_pass_accept_req *req = cplhdr(skb);
2452 unsigned int stid = PASS_OPEN_TID_G(ntohl(req->tos_stid));
2453 struct tid_info *t = dev->rdev.lldi.tids;
2454 unsigned int hwtid = GET_TID(req);
2455 struct dst_entry *dst;
2456 __u8 local_ip[16], peer_ip[16];
2457 __be16 local_port, peer_port;
2458 struct sockaddr_in6 *sin6;
2460 u16 peer_mss = ntohs(req->tcpopt.mss);
2462 unsigned short hdrs;
2463 u8 tos = PASS_OPEN_TOS_G(ntohl(req->tos_stid));
2465 parent_ep = (struct c4iw_ep *)get_ep_from_stid(dev, stid);
2467 pr_err("%s connect request on invalid stid %d\n",
2472 if (state_read(&parent_ep->com) != LISTEN) {
2473 pr_err("%s - listening ep not in LISTEN\n", __func__);
2477 cxgb_get_4tuple(req, parent_ep->com.dev->rdev.lldi.adapter_type,
2478 &iptype, local_ip, peer_ip, &local_port, &peer_port);
2480 /* Find output route */
2482 pr_debug("parent ep %p hwtid %u laddr %pI4 raddr %pI4 lport %d rport %d peer_mss %d\n"
2484 local_ip, peer_ip, ntohs(local_port),
2485 ntohs(peer_port), peer_mss);
2486 dst = cxgb_find_route(&dev->rdev.lldi, get_real_dev,
2487 *(__be32 *)local_ip, *(__be32 *)peer_ip,
2488 local_port, peer_port, tos);
2490 pr_debug("parent ep %p hwtid %u laddr %pI6 raddr %pI6 lport %d rport %d peer_mss %d\n"
2492 local_ip, peer_ip, ntohs(local_port),
2493 ntohs(peer_port), peer_mss);
2494 dst = cxgb_find_route6(&dev->rdev.lldi, get_real_dev,
2495 local_ip, peer_ip, local_port, peer_port,
2496 PASS_OPEN_TOS_G(ntohl(req->tos_stid)),
2497 ((struct sockaddr_in6 *)
2498 &parent_ep->com.local_addr)->sin6_scope_id);
2501 pr_err("%s - failed to find dst entry!\n", __func__);
2505 child_ep = alloc_ep(sizeof(*child_ep), GFP_KERNEL);
2507 pr_err("%s - failed to allocate ep entry!\n", __func__);
2512 err = import_ep(child_ep, iptype, peer_ip, dst, dev, false,
2513 parent_ep->com.dev->rdev.lldi.adapter_type, tos);
2515 pr_err("%s - failed to allocate l2t entry!\n", __func__);
2521 hdrs = ((iptype == 4) ? sizeof(struct iphdr) : sizeof(struct ipv6hdr)) +
2522 sizeof(struct tcphdr) +
2523 ((enable_tcp_timestamps && req->tcpopt.tstamp) ? 12 : 0);
2524 if (peer_mss && child_ep->mtu > (peer_mss + hdrs))
2525 child_ep->mtu = peer_mss + hdrs;
2527 skb_queue_head_init(&child_ep->com.ep_skb_list);
2528 if (alloc_ep_skb_list(&child_ep->com.ep_skb_list, CN_MAX_CON_BUF))
2531 state_set(&child_ep->com, CONNECTING);
2532 child_ep->com.dev = dev;
2533 child_ep->com.cm_id = NULL;
2536 struct sockaddr_in *sin = (struct sockaddr_in *)
2537 &child_ep->com.local_addr;
2539 sin->sin_family = AF_INET;
2540 sin->sin_port = local_port;
2541 sin->sin_addr.s_addr = *(__be32 *)local_ip;
2543 sin = (struct sockaddr_in *)&child_ep->com.local_addr;
2544 sin->sin_family = AF_INET;
2545 sin->sin_port = ((struct sockaddr_in *)
2546 &parent_ep->com.local_addr)->sin_port;
2547 sin->sin_addr.s_addr = *(__be32 *)local_ip;
2549 sin = (struct sockaddr_in *)&child_ep->com.remote_addr;
2550 sin->sin_family = AF_INET;
2551 sin->sin_port = peer_port;
2552 sin->sin_addr.s_addr = *(__be32 *)peer_ip;
2554 sin6 = (struct sockaddr_in6 *)&child_ep->com.local_addr;
2555 sin6->sin6_family = PF_INET6;
2556 sin6->sin6_port = local_port;
2557 memcpy(sin6->sin6_addr.s6_addr, local_ip, 16);
2559 sin6 = (struct sockaddr_in6 *)&child_ep->com.local_addr;
2560 sin6->sin6_family = PF_INET6;
2561 sin6->sin6_port = ((struct sockaddr_in6 *)
2562 &parent_ep->com.local_addr)->sin6_port;
2563 memcpy(sin6->sin6_addr.s6_addr, local_ip, 16);
2565 sin6 = (struct sockaddr_in6 *)&child_ep->com.remote_addr;
2566 sin6->sin6_family = PF_INET6;
2567 sin6->sin6_port = peer_port;
2568 memcpy(sin6->sin6_addr.s6_addr, peer_ip, 16);
2571 c4iw_get_ep(&parent_ep->com);
2572 child_ep->parent_ep = parent_ep;
2573 child_ep->tos = tos;
2574 child_ep->dst = dst;
2575 child_ep->hwtid = hwtid;
2577 pr_debug("tx_chan %u smac_idx %u rss_qid %u\n",
2578 child_ep->tx_chan, child_ep->smac_idx, child_ep->rss_qid);
2580 init_timer(&child_ep->timer);
2581 cxgb4_insert_tid(t, child_ep, hwtid,
2582 child_ep->com.local_addr.ss_family);
2583 insert_ep_tid(child_ep);
2584 if (accept_cr(child_ep, skb, req)) {
2585 c4iw_put_ep(&parent_ep->com);
2586 release_ep_resources(child_ep);
2588 set_bit(PASS_ACCEPT_REQ, &child_ep->com.history);
2591 sin6 = (struct sockaddr_in6 *)&child_ep->com.local_addr;
2592 cxgb4_clip_get(child_ep->com.dev->rdev.lldi.ports[0],
2593 (const u32 *)&sin6->sin6_addr.s6_addr, 1);
2597 c4iw_put_ep(&child_ep->com);
2599 reject_cr(dev, hwtid, skb);
2602 c4iw_put_ep(&parent_ep->com);
2606 static int pass_establish(struct c4iw_dev *dev, struct sk_buff *skb)
2609 struct cpl_pass_establish *req = cplhdr(skb);
2610 unsigned int tid = GET_TID(req);
2613 ep = get_ep_from_tid(dev, tid);
2614 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
2615 ep->snd_seq = be32_to_cpu(req->snd_isn);
2616 ep->rcv_seq = be32_to_cpu(req->rcv_isn);
2618 pr_debug("ep %p hwtid %u tcp_opt 0x%02x\n", ep, tid,
2619 ntohs(req->tcp_opt));
2621 set_emss(ep, ntohs(req->tcp_opt));
2623 dst_confirm(ep->dst);
2624 mutex_lock(&ep->com.mutex);
2625 ep->com.state = MPA_REQ_WAIT;
2627 set_bit(PASS_ESTAB, &ep->com.history);
2628 ret = send_flowc(ep);
2629 mutex_unlock(&ep->com.mutex);
2631 c4iw_ep_disconnect(ep, 1, GFP_KERNEL);
2632 c4iw_put_ep(&ep->com);
2637 static int peer_close(struct c4iw_dev *dev, struct sk_buff *skb)
2639 struct cpl_peer_close *hdr = cplhdr(skb);
2641 struct c4iw_qp_attributes attrs;
2644 unsigned int tid = GET_TID(hdr);
2647 ep = get_ep_from_tid(dev, tid);
2651 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
2652 dst_confirm(ep->dst);
2654 set_bit(PEER_CLOSE, &ep->com.history);
2655 mutex_lock(&ep->com.mutex);
2656 switch (ep->com.state) {
2658 __state_set(&ep->com, CLOSING);
2661 __state_set(&ep->com, CLOSING);
2662 connect_reply_upcall(ep, -ECONNRESET);
2667 * We're gonna mark this puppy DEAD, but keep
2668 * the reference on it until the ULP accepts or
2669 * rejects the CR. Also wake up anyone waiting
2670 * in rdma connection migration (see c4iw_accept_cr()).
2672 __state_set(&ep->com, CLOSING);
2673 pr_debug("waking up ep %p tid %u\n", ep, ep->hwtid);
2674 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
2677 __state_set(&ep->com, CLOSING);
2678 pr_debug("waking up ep %p tid %u\n", ep, ep->hwtid);
2679 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
2683 __state_set(&ep->com, CLOSING);
2684 attrs.next_state = C4IW_QP_STATE_CLOSING;
2685 ret = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
2686 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
2687 if (ret != -ECONNRESET) {
2688 peer_close_upcall(ep);
2696 __state_set(&ep->com, MORIBUND);
2700 (void)stop_ep_timer(ep);
2701 if (ep->com.cm_id && ep->com.qp) {
2702 attrs.next_state = C4IW_QP_STATE_IDLE;
2703 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
2704 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
2706 close_complete_upcall(ep, 0);
2707 __state_set(&ep->com, DEAD);
2717 mutex_unlock(&ep->com.mutex);
2719 c4iw_ep_disconnect(ep, 0, GFP_KERNEL);
2721 release_ep_resources(ep);
2722 c4iw_put_ep(&ep->com);
2726 static int peer_abort(struct c4iw_dev *dev, struct sk_buff *skb)
2728 struct cpl_abort_req_rss *req = cplhdr(skb);
2730 struct sk_buff *rpl_skb;
2731 struct c4iw_qp_attributes attrs;
2734 unsigned int tid = GET_TID(req);
2735 u32 len = roundup(sizeof(struct cpl_abort_rpl), 16);
2737 ep = get_ep_from_tid(dev, tid);
2741 if (cxgb_is_neg_adv(req->status)) {
2742 pr_warn("%s Negative advice on abort- tid %u status %d (%s)\n",
2743 __func__, ep->hwtid, req->status,
2744 neg_adv_str(req->status));
2745 ep->stats.abort_neg_adv++;
2746 mutex_lock(&dev->rdev.stats.lock);
2747 dev->rdev.stats.neg_adv++;
2748 mutex_unlock(&dev->rdev.stats.lock);
2751 pr_debug("ep %p tid %u state %u\n", ep, ep->hwtid,
2753 set_bit(PEER_ABORT, &ep->com.history);
2756 * Wake up any threads in rdma_init() or rdma_fini().
2757 * However, this is not needed if com state is just
2760 if (ep->com.state != MPA_REQ_SENT)
2761 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
2763 mutex_lock(&ep->com.mutex);
2764 switch (ep->com.state) {
2766 c4iw_put_ep(&ep->parent_ep->com);
2769 (void)stop_ep_timer(ep);
2772 (void)stop_ep_timer(ep);
2773 if (mpa_rev == 1 || (mpa_rev == 2 && ep->tried_with_mpa_v1))
2774 connect_reply_upcall(ep, -ECONNRESET);
2777 * we just don't send notification upwards because we
2778 * want to retry with mpa_v1 without upper layers even
2781 * do some housekeeping so as to re-initiate the
2784 pr_info("%s: mpa_rev=%d. Retrying with mpav1\n",
2786 ep->retry_with_mpa_v1 = 1;
2798 if (ep->com.cm_id && ep->com.qp) {
2799 attrs.next_state = C4IW_QP_STATE_ERROR;
2800 ret = c4iw_modify_qp(ep->com.qp->rhp,
2801 ep->com.qp, C4IW_QP_ATTR_NEXT_STATE,
2804 pr_err("%s - qp <- error failed!\n", __func__);
2806 peer_abort_upcall(ep);
2811 pr_warn("%s PEER_ABORT IN DEAD STATE!!!!\n", __func__);
2812 mutex_unlock(&ep->com.mutex);
2818 dst_confirm(ep->dst);
2819 if (ep->com.state != ABORTING) {
2820 __state_set(&ep->com, DEAD);
2821 /* we don't release if we want to retry with mpa_v1 */
2822 if (!ep->retry_with_mpa_v1)
2825 mutex_unlock(&ep->com.mutex);
2827 rpl_skb = skb_dequeue(&ep->com.ep_skb_list);
2828 if (WARN_ON(!rpl_skb)) {
2833 cxgb_mk_abort_rpl(rpl_skb, len, ep->hwtid, ep->txq_idx);
2835 c4iw_ofld_send(&ep->com.dev->rdev, rpl_skb);
2838 release_ep_resources(ep);
2839 else if (ep->retry_with_mpa_v1) {
2840 if (ep->com.remote_addr.ss_family == AF_INET6) {
2841 struct sockaddr_in6 *sin6 =
2842 (struct sockaddr_in6 *)
2843 &ep->com.local_addr;
2845 ep->com.dev->rdev.lldi.ports[0],
2846 (const u32 *)&sin6->sin6_addr.s6_addr,
2849 remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid);
2850 cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid,
2851 ep->com.local_addr.ss_family);
2852 dst_release(ep->dst);
2853 cxgb4_l2t_release(ep->l2t);
2858 c4iw_put_ep(&ep->com);
2859 /* Dereferencing ep, referenced in peer_abort_intr() */
2860 c4iw_put_ep(&ep->com);
2864 static int close_con_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
2867 struct c4iw_qp_attributes attrs;
2868 struct cpl_close_con_rpl *rpl = cplhdr(skb);
2870 unsigned int tid = GET_TID(rpl);
2872 ep = get_ep_from_tid(dev, tid);
2876 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
2878 /* The cm_id may be null if we failed to connect */
2879 mutex_lock(&ep->com.mutex);
2880 set_bit(CLOSE_CON_RPL, &ep->com.history);
2881 switch (ep->com.state) {
2883 __state_set(&ep->com, MORIBUND);
2886 (void)stop_ep_timer(ep);
2887 if ((ep->com.cm_id) && (ep->com.qp)) {
2888 attrs.next_state = C4IW_QP_STATE_IDLE;
2889 c4iw_modify_qp(ep->com.qp->rhp,
2891 C4IW_QP_ATTR_NEXT_STATE,
2894 close_complete_upcall(ep, 0);
2895 __state_set(&ep->com, DEAD);
2905 mutex_unlock(&ep->com.mutex);
2907 release_ep_resources(ep);
2908 c4iw_put_ep(&ep->com);
2912 static int terminate(struct c4iw_dev *dev, struct sk_buff *skb)
2914 struct cpl_rdma_terminate *rpl = cplhdr(skb);
2915 unsigned int tid = GET_TID(rpl);
2917 struct c4iw_qp_attributes attrs;
2919 ep = get_ep_from_tid(dev, tid);
2922 if (ep && ep->com.qp) {
2923 pr_warn("TERM received tid %u qpid %u\n",
2924 tid, ep->com.qp->wq.sq.qid);
2925 attrs.next_state = C4IW_QP_STATE_TERMINATE;
2926 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
2927 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
2929 pr_warn("TERM received tid %u no ep/qp\n", tid);
2930 c4iw_put_ep(&ep->com);
2936 * Upcall from the adapter indicating data has been transmitted.
2937 * For us its just the single MPA request or reply. We can now free
2938 * the skb holding the mpa message.
2940 static int fw4_ack(struct c4iw_dev *dev, struct sk_buff *skb)
2943 struct cpl_fw4_ack *hdr = cplhdr(skb);
2944 u8 credits = hdr->credits;
2945 unsigned int tid = GET_TID(hdr);
2948 ep = get_ep_from_tid(dev, tid);
2951 pr_debug("ep %p tid %u credits %u\n",
2952 ep, ep->hwtid, credits);
2954 pr_debug("0 credit ack ep %p tid %u state %u\n",
2955 ep, ep->hwtid, state_read(&ep->com));
2959 dst_confirm(ep->dst);
2961 pr_debug("last streaming msg ack ep %p tid %u state %u initiator %u freeing skb\n",
2962 ep, ep->hwtid, state_read(&ep->com),
2963 ep->mpa_attr.initiator ? 1 : 0);
2964 mutex_lock(&ep->com.mutex);
2965 kfree_skb(ep->mpa_skb);
2967 if (test_bit(STOP_MPA_TIMER, &ep->com.flags))
2969 mutex_unlock(&ep->com.mutex);
2972 c4iw_put_ep(&ep->com);
2976 int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
2979 struct c4iw_ep *ep = to_ep(cm_id);
2981 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
2983 mutex_lock(&ep->com.mutex);
2984 if (ep->com.state != MPA_REQ_RCVD) {
2985 mutex_unlock(&ep->com.mutex);
2986 c4iw_put_ep(&ep->com);
2989 set_bit(ULP_REJECT, &ep->com.history);
2993 abort = send_mpa_reject(ep, pdata, pdata_len);
2994 mutex_unlock(&ep->com.mutex);
2997 c4iw_ep_disconnect(ep, abort != 0, GFP_KERNEL);
2998 c4iw_put_ep(&ep->com);
3002 int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
3005 struct c4iw_qp_attributes attrs;
3006 enum c4iw_qp_attr_mask mask;
3007 struct c4iw_ep *ep = to_ep(cm_id);
3008 struct c4iw_dev *h = to_c4iw_dev(cm_id->device);
3009 struct c4iw_qp *qp = get_qhp(h, conn_param->qpn);
3012 pr_debug("ep %p tid %u\n", ep, ep->hwtid);
3014 mutex_lock(&ep->com.mutex);
3015 if (ep->com.state != MPA_REQ_RCVD) {
3022 set_bit(ULP_ACCEPT, &ep->com.history);
3023 if ((conn_param->ord > cur_max_read_depth(ep->com.dev)) ||
3024 (conn_param->ird > cur_max_read_depth(ep->com.dev))) {
3029 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
3030 if (conn_param->ord > ep->ird) {
3031 if (RELAXED_IRD_NEGOTIATION) {
3032 conn_param->ord = ep->ird;
3034 ep->ird = conn_param->ird;
3035 ep->ord = conn_param->ord;
3036 send_mpa_reject(ep, conn_param->private_data,
3037 conn_param->private_data_len);
3042 if (conn_param->ird < ep->ord) {
3043 if (RELAXED_IRD_NEGOTIATION &&
3044 ep->ord <= h->rdev.lldi.max_ordird_qp) {
3045 conn_param->ird = ep->ord;
3052 ep->ird = conn_param->ird;
3053 ep->ord = conn_param->ord;
3055 if (ep->mpa_attr.version == 1) {
3056 if (peer2peer && ep->ird == 0)
3060 (ep->mpa_attr.p2p_type != FW_RI_INIT_P2PTYPE_DISABLED) &&
3061 (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) && ep->ird == 0)
3065 pr_debug("ird %d ord %d\n", ep->ird, ep->ord);
3067 ep->com.cm_id = cm_id;
3068 ref_cm_id(&ep->com);
3072 /* bind QP to EP and move to RTS */
3073 attrs.mpa_attr = ep->mpa_attr;
3074 attrs.max_ird = ep->ird;
3075 attrs.max_ord = ep->ord;
3076 attrs.llp_stream_handle = ep;
3077 attrs.next_state = C4IW_QP_STATE_RTS;
3079 /* bind QP and TID with INIT_WR */
3080 mask = C4IW_QP_ATTR_NEXT_STATE |
3081 C4IW_QP_ATTR_LLP_STREAM_HANDLE |
3082 C4IW_QP_ATTR_MPA_ATTR |
3083 C4IW_QP_ATTR_MAX_IRD |
3084 C4IW_QP_ATTR_MAX_ORD;
3086 err = c4iw_modify_qp(ep->com.qp->rhp,
3087 ep->com.qp, mask, &attrs, 1);
3089 goto err_deref_cm_id;
3091 set_bit(STOP_MPA_TIMER, &ep->com.flags);
3092 err = send_mpa_reply(ep, conn_param->private_data,
3093 conn_param->private_data_len);
3095 goto err_deref_cm_id;
3097 __state_set(&ep->com, FPDU_MODE);
3098 established_upcall(ep);
3099 mutex_unlock(&ep->com.mutex);
3100 c4iw_put_ep(&ep->com);
3103 deref_cm_id(&ep->com);
3107 mutex_unlock(&ep->com.mutex);
3109 c4iw_ep_disconnect(ep, 1, GFP_KERNEL);
3110 c4iw_put_ep(&ep->com);
3114 static int pick_local_ipaddrs(struct c4iw_dev *dev, struct iw_cm_id *cm_id)
3116 struct in_device *ind;
3118 struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->m_local_addr;
3119 struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->m_remote_addr;
3121 ind = in_dev_get(dev->rdev.lldi.ports[0]);
3123 return -EADDRNOTAVAIL;
3124 for_primary_ifa(ind) {
3125 laddr->sin_addr.s_addr = ifa->ifa_address;
3126 raddr->sin_addr.s_addr = ifa->ifa_address;
3132 return found ? 0 : -EADDRNOTAVAIL;
3135 static int get_lladdr(struct net_device *dev, struct in6_addr *addr,
3136 unsigned char banned_flags)
3138 struct inet6_dev *idev;
3139 int err = -EADDRNOTAVAIL;
3142 idev = __in6_dev_get(dev);
3144 struct inet6_ifaddr *ifp;
3146 read_lock_bh(&idev->lock);
3147 list_for_each_entry(ifp, &idev->addr_list, if_list) {
3148 if (ifp->scope == IFA_LINK &&
3149 !(ifp->flags & banned_flags)) {
3150 memcpy(addr, &ifp->addr, 16);
3155 read_unlock_bh(&idev->lock);
3161 static int pick_local_ip6addrs(struct c4iw_dev *dev, struct iw_cm_id *cm_id)
3163 struct in6_addr uninitialized_var(addr);
3164 struct sockaddr_in6 *la6 = (struct sockaddr_in6 *)&cm_id->m_local_addr;
3165 struct sockaddr_in6 *ra6 = (struct sockaddr_in6 *)&cm_id->m_remote_addr;
3167 if (!get_lladdr(dev->rdev.lldi.ports[0], &addr, IFA_F_TENTATIVE)) {
3168 memcpy(la6->sin6_addr.s6_addr, &addr, 16);
3169 memcpy(ra6->sin6_addr.s6_addr, &addr, 16);
3172 return -EADDRNOTAVAIL;
3175 int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
3177 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device);
3180 struct sockaddr_in *laddr;
3181 struct sockaddr_in *raddr;
3182 struct sockaddr_in6 *laddr6;
3183 struct sockaddr_in6 *raddr6;
3187 if ((conn_param->ord > cur_max_read_depth(dev)) ||
3188 (conn_param->ird > cur_max_read_depth(dev))) {
3192 ep = alloc_ep(sizeof(*ep), GFP_KERNEL);
3194 pr_err("%s - cannot alloc ep\n", __func__);
3199 skb_queue_head_init(&ep->com.ep_skb_list);
3200 if (alloc_ep_skb_list(&ep->com.ep_skb_list, CN_MAX_CON_BUF)) {
3205 init_timer(&ep->timer);
3206 ep->plen = conn_param->private_data_len;
3208 memcpy(ep->mpa_pkt + sizeof(struct mpa_message),
3209 conn_param->private_data, ep->plen);
3210 ep->ird = conn_param->ird;
3211 ep->ord = conn_param->ord;
3213 if (peer2peer && ep->ord == 0)
3216 ep->com.cm_id = cm_id;
3217 ref_cm_id(&ep->com);
3219 ep->com.qp = get_qhp(dev, conn_param->qpn);
3221 pr_warn("%s qpn 0x%x not found!\n", __func__, conn_param->qpn);
3226 pr_debug("qpn 0x%x qp %p cm_id %p\n", conn_param->qpn,
3230 * Allocate an active TID to initiate a TCP connection.
3232 ep->atid = cxgb4_alloc_atid(dev->rdev.lldi.tids, ep);
3233 if (ep->atid == -1) {
3234 pr_err("%s - cannot alloc atid\n", __func__);
3238 insert_handle(dev, &dev->atid_idr, ep, ep->atid);
3240 memcpy(&ep->com.local_addr, &cm_id->m_local_addr,
3241 sizeof(ep->com.local_addr));
3242 memcpy(&ep->com.remote_addr, &cm_id->m_remote_addr,
3243 sizeof(ep->com.remote_addr));
3245 laddr = (struct sockaddr_in *)&ep->com.local_addr;
3246 raddr = (struct sockaddr_in *)&ep->com.remote_addr;
3247 laddr6 = (struct sockaddr_in6 *)&ep->com.local_addr;
3248 raddr6 = (struct sockaddr_in6 *) &ep->com.remote_addr;
3250 if (cm_id->m_remote_addr.ss_family == AF_INET) {
3252 ra = (__u8 *)&raddr->sin_addr;
3255 * Handle loopback requests to INADDR_ANY.
3257 if (raddr->sin_addr.s_addr == htonl(INADDR_ANY)) {
3258 err = pick_local_ipaddrs(dev, cm_id);
3264 pr_debug("saddr %pI4 sport 0x%x raddr %pI4 rport 0x%x\n",
3265 &laddr->sin_addr, ntohs(laddr->sin_port),
3266 ra, ntohs(raddr->sin_port));
3267 ep->dst = cxgb_find_route(&dev->rdev.lldi, get_real_dev,
3268 laddr->sin_addr.s_addr,
3269 raddr->sin_addr.s_addr,
3271 raddr->sin_port, cm_id->tos);
3274 ra = (__u8 *)&raddr6->sin6_addr;
3277 * Handle loopback requests to INADDR_ANY.
3279 if (ipv6_addr_type(&raddr6->sin6_addr) == IPV6_ADDR_ANY) {
3280 err = pick_local_ip6addrs(dev, cm_id);
3286 pr_debug("saddr %pI6 sport 0x%x raddr %pI6 rport 0x%x\n",
3287 laddr6->sin6_addr.s6_addr,
3288 ntohs(laddr6->sin6_port),
3289 raddr6->sin6_addr.s6_addr, ntohs(raddr6->sin6_port));
3290 ep->dst = cxgb_find_route6(&dev->rdev.lldi, get_real_dev,
3291 laddr6->sin6_addr.s6_addr,
3292 raddr6->sin6_addr.s6_addr,
3294 raddr6->sin6_port, 0,
3295 raddr6->sin6_scope_id);
3298 pr_err("%s - cannot find route\n", __func__);
3299 err = -EHOSTUNREACH;
3303 err = import_ep(ep, iptype, ra, ep->dst, ep->com.dev, true,
3304 ep->com.dev->rdev.lldi.adapter_type, cm_id->tos);
3306 pr_err("%s - cannot alloc l2e\n", __func__);
3310 pr_debug("txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n",
3311 ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid,
3314 state_set(&ep->com, CONNECTING);
3315 ep->tos = cm_id->tos;
3317 /* send connect request to rnic */
3318 err = send_connect(ep);
3322 cxgb4_l2t_release(ep->l2t);
3324 dst_release(ep->dst);
3326 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid);
3327 cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid);
3329 skb_queue_purge(&ep->com.ep_skb_list);
3330 deref_cm_id(&ep->com);
3332 c4iw_put_ep(&ep->com);
3337 static int create_server6(struct c4iw_dev *dev, struct c4iw_listen_ep *ep)
3340 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)
3341 &ep->com.local_addr;
3343 if (ipv6_addr_type(&sin6->sin6_addr) != IPV6_ADDR_ANY) {
3344 err = cxgb4_clip_get(ep->com.dev->rdev.lldi.ports[0],
3345 (const u32 *)&sin6->sin6_addr.s6_addr, 1);
3349 c4iw_init_wr_wait(&ep->com.wr_wait);
3350 err = cxgb4_create_server6(ep->com.dev->rdev.lldi.ports[0],
3351 ep->stid, &sin6->sin6_addr,
3353 ep->com.dev->rdev.lldi.rxq_ids[0]);
3355 err = c4iw_wait_for_reply(&ep->com.dev->rdev,
3359 err = net_xmit_errno(err);
3361 cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
3362 (const u32 *)&sin6->sin6_addr.s6_addr, 1);
3363 pr_err("cxgb4_create_server6/filter failed err %d stid %d laddr %pI6 lport %d\n",
3365 sin6->sin6_addr.s6_addr, ntohs(sin6->sin6_port));
3370 static int create_server4(struct c4iw_dev *dev, struct c4iw_listen_ep *ep)
3373 struct sockaddr_in *sin = (struct sockaddr_in *)
3374 &ep->com.local_addr;
3376 if (dev->rdev.lldi.enable_fw_ofld_conn) {
3378 err = cxgb4_create_server_filter(
3379 ep->com.dev->rdev.lldi.ports[0], ep->stid,
3380 sin->sin_addr.s_addr, sin->sin_port, 0,
3381 ep->com.dev->rdev.lldi.rxq_ids[0], 0, 0);
3382 if (err == -EBUSY) {
3383 if (c4iw_fatal_error(&ep->com.dev->rdev)) {
3387 set_current_state(TASK_UNINTERRUPTIBLE);
3388 schedule_timeout(usecs_to_jiffies(100));
3390 } while (err == -EBUSY);
3392 c4iw_init_wr_wait(&ep->com.wr_wait);
3393 err = cxgb4_create_server(ep->com.dev->rdev.lldi.ports[0],
3394 ep->stid, sin->sin_addr.s_addr, sin->sin_port,
3395 0, ep->com.dev->rdev.lldi.rxq_ids[0]);
3397 err = c4iw_wait_for_reply(&ep->com.dev->rdev,
3401 err = net_xmit_errno(err);
3404 pr_err("cxgb4_create_server/filter failed err %d stid %d laddr %pI4 lport %d\n"
3406 &sin->sin_addr, ntohs(sin->sin_port));
3410 int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog)
3413 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device);
3414 struct c4iw_listen_ep *ep;
3418 ep = alloc_ep(sizeof(*ep), GFP_KERNEL);
3420 pr_err("%s - cannot alloc ep\n", __func__);
3424 skb_queue_head_init(&ep->com.ep_skb_list);
3425 pr_debug("ep %p\n", ep);
3426 ep->com.cm_id = cm_id;
3427 ref_cm_id(&ep->com);
3429 ep->backlog = backlog;
3430 memcpy(&ep->com.local_addr, &cm_id->m_local_addr,
3431 sizeof(ep->com.local_addr));
3434 * Allocate a server TID.
3436 if (dev->rdev.lldi.enable_fw_ofld_conn &&
3437 ep->com.local_addr.ss_family == AF_INET)
3438 ep->stid = cxgb4_alloc_sftid(dev->rdev.lldi.tids,
3439 cm_id->m_local_addr.ss_family, ep);
3441 ep->stid = cxgb4_alloc_stid(dev->rdev.lldi.tids,
3442 cm_id->m_local_addr.ss_family, ep);
3444 if (ep->stid == -1) {
3445 pr_err("%s - cannot alloc stid\n", __func__);
3449 insert_handle(dev, &dev->stid_idr, ep, ep->stid);
3451 memcpy(&ep->com.local_addr, &cm_id->m_local_addr,
3452 sizeof(ep->com.local_addr));
3454 state_set(&ep->com, LISTEN);
3455 if (ep->com.local_addr.ss_family == AF_INET)
3456 err = create_server4(dev, ep);
3458 err = create_server6(dev, ep);
3460 cm_id->provider_data = ep;
3463 remove_handle(ep->com.dev, &ep->com.dev->stid_idr, ep->stid);
3464 cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid,
3465 ep->com.local_addr.ss_family);
3467 deref_cm_id(&ep->com);
3468 c4iw_put_ep(&ep->com);
3474 int c4iw_destroy_listen(struct iw_cm_id *cm_id)
3477 struct c4iw_listen_ep *ep = to_listen_ep(cm_id);
3479 pr_debug("ep %p\n", ep);
3482 state_set(&ep->com, DEAD);
3483 if (ep->com.dev->rdev.lldi.enable_fw_ofld_conn &&
3484 ep->com.local_addr.ss_family == AF_INET) {
3485 err = cxgb4_remove_server_filter(
3486 ep->com.dev->rdev.lldi.ports[0], ep->stid,
3487 ep->com.dev->rdev.lldi.rxq_ids[0], 0);
3489 struct sockaddr_in6 *sin6;
3490 c4iw_init_wr_wait(&ep->com.wr_wait);
3491 err = cxgb4_remove_server(
3492 ep->com.dev->rdev.lldi.ports[0], ep->stid,
3493 ep->com.dev->rdev.lldi.rxq_ids[0], 0);
3496 err = c4iw_wait_for_reply(&ep->com.dev->rdev, &ep->com.wr_wait,
3498 sin6 = (struct sockaddr_in6 *)&ep->com.local_addr;
3499 cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
3500 (const u32 *)&sin6->sin6_addr.s6_addr, 1);
3502 remove_handle(ep->com.dev, &ep->com.dev->stid_idr, ep->stid);
3503 cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid,
3504 ep->com.local_addr.ss_family);
3506 deref_cm_id(&ep->com);
3507 c4iw_put_ep(&ep->com);
3511 int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp)
3516 struct c4iw_rdev *rdev;
3518 mutex_lock(&ep->com.mutex);
3520 pr_debug("ep %p state %s, abrupt %d\n", ep,
3521 states[ep->com.state], abrupt);
3524 * Ref the ep here in case we have fatal errors causing the
3525 * ep to be released and freed.
3527 c4iw_get_ep(&ep->com);
3529 rdev = &ep->com.dev->rdev;
3530 if (c4iw_fatal_error(rdev)) {
3532 close_complete_upcall(ep, -EIO);
3533 ep->com.state = DEAD;
3535 switch (ep->com.state) {
3544 ep->com.state = ABORTING;
3546 ep->com.state = CLOSING;
3549 * if we close before we see the fw4_ack() then we fix
3550 * up the timer state since we're reusing it.
3553 test_bit(STOP_MPA_TIMER, &ep->com.flags)) {
3554 clear_bit(STOP_MPA_TIMER, &ep->com.flags);
3559 set_bit(CLOSE_SENT, &ep->com.flags);
3562 if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) {
3565 (void)stop_ep_timer(ep);
3566 ep->com.state = ABORTING;
3568 ep->com.state = MORIBUND;
3574 pr_info("%s ignoring disconnect ep %p state %u\n",
3575 __func__, ep, ep->com.state);
3584 set_bit(EP_DISC_ABORT, &ep->com.history);
3585 close_complete_upcall(ep, -ECONNRESET);
3586 ret = send_abort(ep);
3588 set_bit(EP_DISC_CLOSE, &ep->com.history);
3589 ret = send_halfclose(ep);
3592 set_bit(EP_DISC_FAIL, &ep->com.history);
3595 close_complete_upcall(ep, -EIO);
3598 struct c4iw_qp_attributes attrs;
3600 attrs.next_state = C4IW_QP_STATE_ERROR;
3601 ret = c4iw_modify_qp(ep->com.qp->rhp,
3603 C4IW_QP_ATTR_NEXT_STATE,
3606 pr_err("%s - qp <- error failed!\n",
3612 mutex_unlock(&ep->com.mutex);
3613 c4iw_put_ep(&ep->com);
3615 release_ep_resources(ep);
3619 static void active_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb,
3620 struct cpl_fw6_msg_ofld_connection_wr_rpl *req)
3623 int atid = be32_to_cpu(req->tid);
3625 ep = (struct c4iw_ep *)lookup_atid(dev->rdev.lldi.tids,
3626 (__force u32) req->tid);
3630 switch (req->retval) {
3632 set_bit(ACT_RETRY_NOMEM, &ep->com.history);
3633 if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) {
3634 send_fw_act_open_req(ep, atid);
3638 set_bit(ACT_RETRY_INUSE, &ep->com.history);
3639 if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) {
3640 send_fw_act_open_req(ep, atid);
3645 pr_info("%s unexpected ofld conn wr retval %d\n",
3646 __func__, req->retval);
3649 pr_err("active ofld_connect_wr failure %d atid %d\n",
3651 mutex_lock(&dev->rdev.stats.lock);
3652 dev->rdev.stats.act_ofld_conn_fails++;
3653 mutex_unlock(&dev->rdev.stats.lock);
3654 connect_reply_upcall(ep, status2errno(req->retval));
3655 state_set(&ep->com, DEAD);
3656 if (ep->com.remote_addr.ss_family == AF_INET6) {
3657 struct sockaddr_in6 *sin6 =
3658 (struct sockaddr_in6 *)&ep->com.local_addr;
3659 cxgb4_clip_release(ep->com.dev->rdev.lldi.ports[0],
3660 (const u32 *)&sin6->sin6_addr.s6_addr, 1);
3662 remove_handle(dev, &dev->atid_idr, atid);
3663 cxgb4_free_atid(dev->rdev.lldi.tids, atid);
3664 dst_release(ep->dst);
3665 cxgb4_l2t_release(ep->l2t);
3666 c4iw_put_ep(&ep->com);
3669 static void passive_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb,
3670 struct cpl_fw6_msg_ofld_connection_wr_rpl *req)
3672 struct sk_buff *rpl_skb;
3673 struct cpl_pass_accept_req *cpl;
3676 rpl_skb = (struct sk_buff *)(unsigned long)req->cookie;
3679 pr_err("%s passive open failure %d\n", __func__, req->retval);
3680 mutex_lock(&dev->rdev.stats.lock);
3681 dev->rdev.stats.pas_ofld_conn_fails++;
3682 mutex_unlock(&dev->rdev.stats.lock);
3685 cpl = (struct cpl_pass_accept_req *)cplhdr(rpl_skb);
3686 OPCODE_TID(cpl) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ,
3687 (__force u32) htonl(
3688 (__force u32) req->tid)));
3689 ret = pass_accept_req(dev, rpl_skb);
3696 static int deferred_fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb)
3698 struct cpl_fw6_msg *rpl = cplhdr(skb);
3699 struct cpl_fw6_msg_ofld_connection_wr_rpl *req;
3701 switch (rpl->type) {
3703 c4iw_ev_dispatch(dev, (struct t4_cqe *)&rpl->data[0]);
3705 case FW6_TYPE_OFLD_CONNECTION_WR_RPL:
3706 req = (struct cpl_fw6_msg_ofld_connection_wr_rpl *)rpl->data;
3707 switch (req->t_state) {
3709 active_ofld_conn_reply(dev, skb, req);
3712 passive_ofld_conn_reply(dev, skb, req);
3715 pr_err("%s unexpected ofld conn wr state %d\n",
3716 __func__, req->t_state);
3724 static void build_cpl_pass_accept_req(struct sk_buff *skb, int stid , u8 tos)
3727 __be16 hdr_len, vlantag, len;
3729 int tcp_hdr_len, ip_hdr_len;
3731 struct cpl_rx_pkt *cpl = cplhdr(skb);
3732 struct cpl_pass_accept_req *req;
3733 struct tcp_options_received tmp_opt;
3734 struct c4iw_dev *dev;
3735 enum chip_type type;
3737 dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *)));
3738 /* Store values from cpl_rx_pkt in temporary location. */
3739 vlantag = cpl->vlan;
3741 l2info = cpl->l2info;
3742 hdr_len = cpl->hdr_len;
3745 __skb_pull(skb, sizeof(*req) + sizeof(struct rss_header));
3748 * We need to parse the TCP options from SYN packet.
3749 * to generate cpl_pass_accept_req.
3751 memset(&tmp_opt, 0, sizeof(tmp_opt));
3752 tcp_clear_options(&tmp_opt);
3753 tcp_parse_options(&init_net, skb, &tmp_opt, 0, NULL);
3755 req = __skb_push(skb, sizeof(*req));
3756 memset(req, 0, sizeof(*req));
3757 req->l2info = cpu_to_be16(SYN_INTF_V(intf) |
3758 SYN_MAC_IDX_V(RX_MACIDX_G(
3759 be32_to_cpu(l2info))) |
3761 type = dev->rdev.lldi.adapter_type;
3762 tcp_hdr_len = RX_TCPHDR_LEN_G(be16_to_cpu(hdr_len));
3763 ip_hdr_len = RX_IPHDR_LEN_G(be16_to_cpu(hdr_len));
3765 cpu_to_be32(SYN_RX_CHAN_V(RX_CHAN_G(be32_to_cpu(l2info))));
3766 if (CHELSIO_CHIP_VERSION(type) <= CHELSIO_T5) {
3767 eth_hdr_len = is_t4(type) ?
3768 RX_ETHHDR_LEN_G(be32_to_cpu(l2info)) :
3769 RX_T5_ETHHDR_LEN_G(be32_to_cpu(l2info));
3770 req->hdr_len |= cpu_to_be32(TCP_HDR_LEN_V(tcp_hdr_len) |
3771 IP_HDR_LEN_V(ip_hdr_len) |
3772 ETH_HDR_LEN_V(eth_hdr_len));
3773 } else { /* T6 and later */
3774 eth_hdr_len = RX_T6_ETHHDR_LEN_G(be32_to_cpu(l2info));
3775 req->hdr_len |= cpu_to_be32(T6_TCP_HDR_LEN_V(tcp_hdr_len) |
3776 T6_IP_HDR_LEN_V(ip_hdr_len) |
3777 T6_ETH_HDR_LEN_V(eth_hdr_len));
3779 req->vlan = vlantag;
3781 req->tos_stid = cpu_to_be32(PASS_OPEN_TID_V(stid) |
3782 PASS_OPEN_TOS_V(tos));
3783 req->tcpopt.mss = htons(tmp_opt.mss_clamp);
3784 if (tmp_opt.wscale_ok)
3785 req->tcpopt.wsf = tmp_opt.snd_wscale;
3786 req->tcpopt.tstamp = tmp_opt.saw_tstamp;
3787 if (tmp_opt.sack_ok)
3788 req->tcpopt.sack = 1;
3789 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ, 0));
3793 static void send_fw_pass_open_req(struct c4iw_dev *dev, struct sk_buff *skb,
3794 __be32 laddr, __be16 lport,
3795 __be32 raddr, __be16 rport,
3796 u32 rcv_isn, u32 filter, u16 window,
3797 u32 rss_qid, u8 port_id)
3799 struct sk_buff *req_skb;
3800 struct fw_ofld_connection_wr *req;
3801 struct cpl_pass_accept_req *cpl = cplhdr(skb);
3804 req_skb = alloc_skb(sizeof(struct fw_ofld_connection_wr), GFP_KERNEL);
3807 req = __skb_put_zero(req_skb, sizeof(*req));
3808 req->op_compl = htonl(WR_OP_V(FW_OFLD_CONNECTION_WR) | FW_WR_COMPL_F);
3809 req->len16_pkd = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*req), 16)));
3810 req->le.version_cpl = htonl(FW_OFLD_CONNECTION_WR_CPL_F);
3811 req->le.filter = (__force __be32) filter;
3812 req->le.lport = lport;
3813 req->le.pport = rport;
3814 req->le.u.ipv4.lip = laddr;
3815 req->le.u.ipv4.pip = raddr;
3816 req->tcb.rcv_nxt = htonl(rcv_isn + 1);
3817 req->tcb.rcv_adv = htons(window);
3818 req->tcb.t_state_to_astid =
3819 htonl(FW_OFLD_CONNECTION_WR_T_STATE_V(TCP_SYN_RECV) |
3820 FW_OFLD_CONNECTION_WR_RCV_SCALE_V(cpl->tcpopt.wsf) |
3821 FW_OFLD_CONNECTION_WR_ASTID_V(
3822 PASS_OPEN_TID_G(ntohl(cpl->tos_stid))));
3825 * We store the qid in opt2 which will be used by the firmware
3826 * to send us the wr response.
3828 req->tcb.opt2 = htonl(RSS_QUEUE_V(rss_qid));
3831 * We initialize the MSS index in TCB to 0xF.
3832 * So that when driver sends cpl_pass_accept_rpl
3833 * TCB picks up the correct value. If this was 0
3834 * TP will ignore any value > 0 for MSS index.
3836 req->tcb.opt0 = cpu_to_be64(MSS_IDX_V(0xF));
3837 req->cookie = (uintptr_t)skb;
3839 set_wr_txq(req_skb, CPL_PRIORITY_CONTROL, port_id);
3840 ret = cxgb4_ofld_send(dev->rdev.lldi.ports[0], req_skb);
3842 pr_err("%s - cxgb4_ofld_send error %d - dropping\n", __func__,
3850 * Handler for CPL_RX_PKT message. Need to handle cpl_rx_pkt
3851 * messages when a filter is being used instead of server to
3852 * redirect a syn packet. When packets hit filter they are redirected
3853 * to the offload queue and driver tries to establish the connection
3854 * using firmware work request.
3856 static int rx_pkt(struct c4iw_dev *dev, struct sk_buff *skb)
3859 unsigned int filter;
3860 struct ethhdr *eh = NULL;
3861 struct vlan_ethhdr *vlan_eh = NULL;
3863 struct tcphdr *tcph;
3864 struct rss_header *rss = (void *)skb->data;
3865 struct cpl_rx_pkt *cpl = (void *)skb->data;
3866 struct cpl_pass_accept_req *req = (void *)(rss + 1);
3867 struct l2t_entry *e;
3868 struct dst_entry *dst;
3869 struct c4iw_ep *lep = NULL;
3871 struct port_info *pi;
3872 struct net_device *pdev;
3873 u16 rss_qid, eth_hdr_len;
3876 struct neighbour *neigh;
3878 /* Drop all non-SYN packets */
3879 if (!(cpl->l2info & cpu_to_be32(RXF_SYN_F)))
3883 * Drop all packets which did not hit the filter.
3884 * Unlikely to happen.
3886 if (!(rss->filter_hit && rss->filter_tid))
3890 * Calculate the server tid from filter hit index from cpl_rx_pkt.
3892 stid = (__force int) cpu_to_be32((__force u32) rss->hash_val);
3894 lep = (struct c4iw_ep *)get_ep_from_stid(dev, stid);
3896 pr_warn("%s connect request on invalid stid %d\n",
3901 switch (CHELSIO_CHIP_VERSION(dev->rdev.lldi.adapter_type)) {
3903 eth_hdr_len = RX_ETHHDR_LEN_G(be32_to_cpu(cpl->l2info));
3906 eth_hdr_len = RX_T5_ETHHDR_LEN_G(be32_to_cpu(cpl->l2info));
3909 eth_hdr_len = RX_T6_ETHHDR_LEN_G(be32_to_cpu(cpl->l2info));
3912 pr_err("T%d Chip is not supported\n",
3913 CHELSIO_CHIP_VERSION(dev->rdev.lldi.adapter_type));
3917 if (eth_hdr_len == ETH_HLEN) {
3918 eh = (struct ethhdr *)(req + 1);
3919 iph = (struct iphdr *)(eh + 1);
3921 vlan_eh = (struct vlan_ethhdr *)(req + 1);
3922 iph = (struct iphdr *)(vlan_eh + 1);
3923 skb->vlan_tci = ntohs(cpl->vlan);
3926 if (iph->version != 0x4)
3929 tcph = (struct tcphdr *)(iph + 1);
3930 skb_set_network_header(skb, (void *)iph - (void *)rss);
3931 skb_set_transport_header(skb, (void *)tcph - (void *)rss);
3934 pr_debug("lip 0x%x lport %u pip 0x%x pport %u tos %d\n",
3935 ntohl(iph->daddr), ntohs(tcph->dest), ntohl(iph->saddr),
3936 ntohs(tcph->source), iph->tos);
3938 dst = cxgb_find_route(&dev->rdev.lldi, get_real_dev,
3939 iph->daddr, iph->saddr, tcph->dest,
3940 tcph->source, iph->tos);
3942 pr_err("%s - failed to find dst entry!\n", __func__);
3945 neigh = dst_neigh_lookup_skb(dst, skb);
3948 pr_err("%s - failed to allocate neigh!\n", __func__);
3952 if (neigh->dev->flags & IFF_LOOPBACK) {
3953 pdev = ip_dev_find(&init_net, iph->daddr);
3954 e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh,
3956 pi = (struct port_info *)netdev_priv(pdev);
3957 tx_chan = cxgb4_port_chan(pdev);
3960 pdev = get_real_dev(neigh->dev);
3961 e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh,
3963 pi = (struct port_info *)netdev_priv(pdev);
3964 tx_chan = cxgb4_port_chan(pdev);
3966 neigh_release(neigh);
3968 pr_err("%s - failed to allocate l2t entry!\n",
3973 step = dev->rdev.lldi.nrxq / dev->rdev.lldi.nchan;
3974 rss_qid = dev->rdev.lldi.rxq_ids[pi->port_id * step];
3975 window = (__force u16) htons((__force u16)tcph->window);
3977 /* Calcuate filter portion for LE region. */
3978 filter = (__force unsigned int) cpu_to_be32(cxgb4_select_ntuple(
3979 dev->rdev.lldi.ports[0],
3983 * Synthesize the cpl_pass_accept_req. We have everything except the
3984 * TID. Once firmware sends a reply with TID we update the TID field
3985 * in cpl and pass it through the regular cpl_pass_accept_req path.
3987 build_cpl_pass_accept_req(skb, stid, iph->tos);
3988 send_fw_pass_open_req(dev, skb, iph->daddr, tcph->dest, iph->saddr,
3989 tcph->source, ntohl(tcph->seq), filter, window,
3990 rss_qid, pi->port_id);
3991 cxgb4_l2t_release(e);
3996 c4iw_put_ep(&lep->com);
4001 * These are the real handlers that are called from a
4004 static c4iw_handler_func work_handlers[NUM_CPL_CMDS + NUM_FAKE_CPLS] = {
4005 [CPL_ACT_ESTABLISH] = act_establish,
4006 [CPL_ACT_OPEN_RPL] = act_open_rpl,
4007 [CPL_RX_DATA] = rx_data,
4008 [CPL_ABORT_RPL_RSS] = abort_rpl,
4009 [CPL_ABORT_RPL] = abort_rpl,
4010 [CPL_PASS_OPEN_RPL] = pass_open_rpl,
4011 [CPL_CLOSE_LISTSRV_RPL] = close_listsrv_rpl,
4012 [CPL_PASS_ACCEPT_REQ] = pass_accept_req,
4013 [CPL_PASS_ESTABLISH] = pass_establish,
4014 [CPL_PEER_CLOSE] = peer_close,
4015 [CPL_ABORT_REQ_RSS] = peer_abort,
4016 [CPL_CLOSE_CON_RPL] = close_con_rpl,
4017 [CPL_RDMA_TERMINATE] = terminate,
4018 [CPL_FW4_ACK] = fw4_ack,
4019 [CPL_FW6_MSG] = deferred_fw6_msg,
4020 [CPL_RX_PKT] = rx_pkt,
4021 [FAKE_CPL_PUT_EP_SAFE] = _put_ep_safe,
4022 [FAKE_CPL_PASS_PUT_EP_SAFE] = _put_pass_ep_safe
4025 static void process_timeout(struct c4iw_ep *ep)
4027 struct c4iw_qp_attributes attrs;
4030 mutex_lock(&ep->com.mutex);
4031 pr_debug("ep %p tid %u state %d\n", ep, ep->hwtid, ep->com.state);
4032 set_bit(TIMEDOUT, &ep->com.history);
4033 switch (ep->com.state) {
4035 connect_reply_upcall(ep, -ETIMEDOUT);
4044 if (ep->com.cm_id && ep->com.qp) {
4045 attrs.next_state = C4IW_QP_STATE_ERROR;
4046 c4iw_modify_qp(ep->com.qp->rhp,
4047 ep->com.qp, C4IW_QP_ATTR_NEXT_STATE,
4050 close_complete_upcall(ep, -ETIMEDOUT);
4056 * These states are expected if the ep timed out at the same
4057 * time as another thread was calling stop_ep_timer().
4058 * So we silently do nothing for these states.
4063 WARN(1, "%s unexpected state ep %p tid %u state %u\n",
4064 __func__, ep, ep->hwtid, ep->com.state);
4067 mutex_unlock(&ep->com.mutex);
4069 c4iw_ep_disconnect(ep, 1, GFP_KERNEL);
4070 c4iw_put_ep(&ep->com);
4073 static void process_timedout_eps(void)
4077 spin_lock_irq(&timeout_lock);
4078 while (!list_empty(&timeout_list)) {
4079 struct list_head *tmp;
4081 tmp = timeout_list.next;
4085 spin_unlock_irq(&timeout_lock);
4086 ep = list_entry(tmp, struct c4iw_ep, entry);
4087 process_timeout(ep);
4088 spin_lock_irq(&timeout_lock);
4090 spin_unlock_irq(&timeout_lock);
4093 static void process_work(struct work_struct *work)
4095 struct sk_buff *skb = NULL;
4096 struct c4iw_dev *dev;
4097 struct cpl_act_establish *rpl;
4098 unsigned int opcode;
4101 process_timedout_eps();
4102 while ((skb = skb_dequeue(&rxq))) {
4104 dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *)));
4105 opcode = rpl->ot.opcode;
4107 BUG_ON(!work_handlers[opcode]);
4108 ret = work_handlers[opcode](dev, skb);
4111 process_timedout_eps();
4115 static DECLARE_WORK(skb_work, process_work);
4117 static void ep_timeout(unsigned long arg)
4119 struct c4iw_ep *ep = (struct c4iw_ep *)arg;
4122 spin_lock(&timeout_lock);
4123 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) {
4125 * Only insert if it is not already on the list.
4127 if (!ep->entry.next) {
4128 list_add_tail(&ep->entry, &timeout_list);
4132 spin_unlock(&timeout_lock);
4134 queue_work(workq, &skb_work);
4138 * All the CM events are handled on a work queue to have a safe context.
4140 static int sched(struct c4iw_dev *dev, struct sk_buff *skb)
4144 * Save dev in the skb->cb area.
4146 *((struct c4iw_dev **) (skb->cb + sizeof(void *))) = dev;
4149 * Queue the skb and schedule the worker thread.
4151 skb_queue_tail(&rxq, skb);
4152 queue_work(workq, &skb_work);
4156 static int set_tcb_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
4158 struct cpl_set_tcb_rpl *rpl = cplhdr(skb);
4160 if (rpl->status != CPL_ERR_NONE) {
4161 pr_err("Unexpected SET_TCB_RPL status %u for tid %u\n",
4162 rpl->status, GET_TID(rpl));
4168 static int fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb)
4170 struct cpl_fw6_msg *rpl = cplhdr(skb);
4171 struct c4iw_wr_wait *wr_waitp;
4174 pr_debug("type %u\n", rpl->type);
4176 switch (rpl->type) {
4177 case FW6_TYPE_WR_RPL:
4178 ret = (int)((be64_to_cpu(rpl->data[0]) >> 8) & 0xff);
4179 wr_waitp = (struct c4iw_wr_wait *)(__force unsigned long) rpl->data[1];
4180 pr_debug("wr_waitp %p ret %u\n", wr_waitp, ret);
4182 c4iw_wake_up(wr_waitp, ret ? -ret : 0);
4186 case FW6_TYPE_OFLD_CONNECTION_WR_RPL:
4190 pr_err("%s unexpected fw6 msg type %u\n",
4191 __func__, rpl->type);
4198 static int peer_abort_intr(struct c4iw_dev *dev, struct sk_buff *skb)
4200 struct cpl_abort_req_rss *req = cplhdr(skb);
4202 unsigned int tid = GET_TID(req);
4204 ep = get_ep_from_tid(dev, tid);
4205 /* This EP will be dereferenced in peer_abort() */
4207 pr_warn("Abort on non-existent endpoint, tid %d\n", tid);
4211 if (cxgb_is_neg_adv(req->status)) {
4212 pr_warn("%s Negative advice on abort- tid %u status %d (%s)\n",
4213 __func__, ep->hwtid, req->status,
4214 neg_adv_str(req->status));
4217 pr_debug("ep %p tid %u state %u\n", ep, ep->hwtid, ep->com.state);
4219 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
4226 * Most upcalls from the T4 Core go to sched() to
4227 * schedule the processing on a work queue.
4229 c4iw_handler_func c4iw_handlers[NUM_CPL_CMDS] = {
4230 [CPL_ACT_ESTABLISH] = sched,
4231 [CPL_ACT_OPEN_RPL] = sched,
4232 [CPL_RX_DATA] = sched,
4233 [CPL_ABORT_RPL_RSS] = sched,
4234 [CPL_ABORT_RPL] = sched,
4235 [CPL_PASS_OPEN_RPL] = sched,
4236 [CPL_CLOSE_LISTSRV_RPL] = sched,
4237 [CPL_PASS_ACCEPT_REQ] = sched,
4238 [CPL_PASS_ESTABLISH] = sched,
4239 [CPL_PEER_CLOSE] = sched,
4240 [CPL_CLOSE_CON_RPL] = sched,
4241 [CPL_ABORT_REQ_RSS] = peer_abort_intr,
4242 [CPL_RDMA_TERMINATE] = sched,
4243 [CPL_FW4_ACK] = sched,
4244 [CPL_SET_TCB_RPL] = set_tcb_rpl,
4245 [CPL_FW6_MSG] = fw6_msg,
4246 [CPL_RX_PKT] = sched
4249 int __init c4iw_cm_init(void)
4251 spin_lock_init(&timeout_lock);
4252 skb_queue_head_init(&rxq);
4254 workq = alloc_ordered_workqueue("iw_cxgb4", WQ_MEM_RECLAIM);
4261 void c4iw_cm_term(void)
4263 WARN_ON(!list_empty(&timeout_list));
4264 flush_workqueue(workq);
4265 destroy_workqueue(workq);