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RDMA/cxgb4: Default peer2peer mode to 1
[linux-2.6-block.git] / drivers / infiniband / hw / cxgb4 / cm.c
CommitLineData
cfdda9d7
SW		 1/*
2 * Copyright (c) 2009-2010 Chelsio, Inc. All rights reserved.
3 *
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:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
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.
22 *
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
30 * SOFTWARE.
31 */
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>
39#include <linux/ip.h>
40#include <linux/tcp.h>
1cab775c 41#include <linux/if_vlan.h>
cfdda9d7
SW		 42
43#include <net/neighbour.h>
44#include <net/netevent.h>
45#include <net/route.h>
1cab775c 46#include <net/tcp.h>
830662f6
VP		 47#include <net/ip6_route.h>
48#include <net/addrconf.h>
cfdda9d7
SW		 49
50#include "iw_cxgb4.h"
51
52static char *states[] = {
53 "idle",
54 "listen",
55 "connecting",
56 "mpa_wait_req",
57 "mpa_req_sent",
58 "mpa_req_rcvd",
59 "mpa_rep_sent",
60 "fpdu_mode",
61 "aborting",
62 "closing",
63 "moribund",
64 "dead",
65 NULL,
66};
67
5be78ee9
VP		 68static int nocong;
69module_param(nocong, int, 0644);
70MODULE_PARM_DESC(nocong, "Turn of congestion control (default=0)");
71
72static int enable_ecn;
73module_param(enable_ecn, int, 0644);
74MODULE_PARM_DESC(enable_ecn, "Enable ECN (default=0/disabled)");
75
b52fe09e 76static int dack_mode = 1;
ba6d3925 77module_param(dack_mode, int, 0644);
b52fe09e 78MODULE_PARM_DESC(dack_mode, "Delayed ack mode (default=1)");
ba6d3925 79
be4c9bad
RD		 80int c4iw_max_read_depth = 8;
81module_param(c4iw_max_read_depth, int, 0644);
82MODULE_PARM_DESC(c4iw_max_read_depth, "Per-connection max ORD/IRD (default=8)");
83
cfdda9d7
SW		 84static int enable_tcp_timestamps;
85module_param(enable_tcp_timestamps, int, 0644);
86MODULE_PARM_DESC(enable_tcp_timestamps, "Enable tcp timestamps (default=0)");
87
88static int enable_tcp_sack;
89module_param(enable_tcp_sack, int, 0644);
90MODULE_PARM_DESC(enable_tcp_sack, "Enable tcp SACK (default=0)");
91
92static int enable_tcp_window_scaling = 1;
93module_param(enable_tcp_window_scaling, int, 0644);
94MODULE_PARM_DESC(enable_tcp_window_scaling,
95 "Enable tcp window scaling (default=1)");
96
97int c4iw_debug;
98module_param(c4iw_debug, int, 0644);
99MODULE_PARM_DESC(c4iw_debug, "Enable debug logging (default=0)");
100
df2d5130 101static int peer2peer = 1;
cfdda9d7 102module_param(peer2peer, int, 0644);
df2d5130 103MODULE_PARM_DESC(peer2peer, "Support peer2peer ULPs (default=1)");
cfdda9d7
SW		 104
105static int p2p_type = FW_RI_INIT_P2PTYPE_READ_REQ;
106module_param(p2p_type, int, 0644);
107MODULE_PARM_DESC(p2p_type, "RDMAP opcode to use for the RTR message: "
108 "1=RDMA_READ 0=RDMA_WRITE (default 1)");
109
110static int ep_timeout_secs = 60;
111module_param(ep_timeout_secs, int, 0644);
112MODULE_PARM_DESC(ep_timeout_secs, "CM Endpoint operation timeout "
113 "in seconds (default=60)");
114
115static int mpa_rev = 1;
116module_param(mpa_rev, int, 0644);
117MODULE_PARM_DESC(mpa_rev, "MPA Revision, 0 supports amso1100, "
d2fe99e8
KS		 118 "1 is RFC0544 spec compliant, 2 is IETF MPA Peer Connect Draft"
119 " compliant (default=1)");
cfdda9d7
SW		 120
121static int markers_enabled;
122module_param(markers_enabled, int, 0644);
123MODULE_PARM_DESC(markers_enabled, "Enable MPA MARKERS (default(0)=disabled)");
124
125static int crc_enabled = 1;
126module_param(crc_enabled, int, 0644);
127MODULE_PARM_DESC(crc_enabled, "Enable MPA CRC (default(1)=enabled)");
128
129static int rcv_win = 256 * 1024;
130module_param(rcv_win, int, 0644);
131MODULE_PARM_DESC(rcv_win, "TCP receive window in bytes (default=256KB)");
132
98ae68b7 133static int snd_win = 128 * 1024;
cfdda9d7 134module_param(snd_win, int, 0644);
98ae68b7 135MODULE_PARM_DESC(snd_win, "TCP send window in bytes (default=128KB)");
cfdda9d7 136
cfdda9d7 137static struct workqueue_struct *workq;
cfdda9d7
SW		 138
139static struct sk_buff_head rxq;
cfdda9d7
SW		 140
141static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp);
142static void ep_timeout(unsigned long arg);
143static void connect_reply_upcall(struct c4iw_ep *ep, int status);
144
be4c9bad
RD		 145static LIST_HEAD(timeout_list);
146static spinlock_t timeout_lock;
147
325abead
VP		 148static void deref_qp(struct c4iw_ep *ep)
149{
150 c4iw_qp_rem_ref(&ep->com.qp->ibqp);
151 clear_bit(QP_REFERENCED, &ep->com.flags);
152}
153
154static void ref_qp(struct c4iw_ep *ep)
155{
156 set_bit(QP_REFERENCED, &ep->com.flags);
157 c4iw_qp_add_ref(&ep->com.qp->ibqp);
158}
159
cfdda9d7
SW		 160static void start_ep_timer(struct c4iw_ep *ep)
161{
162 PDBG("%s ep %p\n", __func__, ep);
163 if (timer_pending(&ep->timer)) {
1ec779cc
VP		 164 pr_err("%s timer already started! ep %p\n",
165 __func__, ep);
166 return;
167 }
168 clear_bit(TIMEOUT, &ep->com.flags);
169 c4iw_get_ep(&ep->com);
cfdda9d7
SW		 170 ep->timer.expires = jiffies + ep_timeout_secs * HZ;
171 ep->timer.data = (unsigned long)ep;
172 ep->timer.function = ep_timeout;
173 add_timer(&ep->timer);
174}
175
176static void stop_ep_timer(struct c4iw_ep *ep)
177{
1ec779cc 178 PDBG("%s ep %p stopping\n", __func__, ep);
cfdda9d7 179 del_timer_sync(&ep->timer);
1ec779cc
VP		 180 if (!test_and_set_bit(TIMEOUT, &ep->com.flags))
181 c4iw_put_ep(&ep->com);
cfdda9d7
SW		 182}
183
184static int c4iw_l2t_send(struct c4iw_rdev *rdev, struct sk_buff *skb,
185 struct l2t_entry *l2e)
186{
187 int error = 0;
188
189 if (c4iw_fatal_error(rdev)) {
190 kfree_skb(skb);
191 PDBG("%s - device in error state - dropping\n", __func__);
192 return -EIO;
193 }
194 error = cxgb4_l2t_send(rdev->lldi.ports[0], skb, l2e);
195 if (error < 0)
196 kfree_skb(skb);
74594861 197 return error < 0 ? error : 0;
cfdda9d7
SW		 198}
199
200int c4iw_ofld_send(struct c4iw_rdev *rdev, struct sk_buff *skb)
201{
202 int error = 0;
203
204 if (c4iw_fatal_error(rdev)) {
205 kfree_skb(skb);
206 PDBG("%s - device in error state - dropping\n", __func__);
207 return -EIO;
208 }
209 error = cxgb4_ofld_send(rdev->lldi.ports[0], skb);
210 if (error < 0)
211 kfree_skb(skb);
74594861 212 return error < 0 ? error : 0;
cfdda9d7
SW		 213}
214
215static void release_tid(struct c4iw_rdev *rdev, u32 hwtid, struct sk_buff *skb)
216{
217 struct cpl_tid_release *req;
218
219 skb = get_skb(skb, sizeof *req, GFP_KERNEL);
220 if (!skb)
221 return;
222 req = (struct cpl_tid_release *) skb_put(skb, sizeof(*req));
223 INIT_TP_WR(req, hwtid);
224 OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_TID_RELEASE, hwtid));
225 set_wr_txq(skb, CPL_PRIORITY_SETUP, 0);
226 c4iw_ofld_send(rdev, skb);
227 return;
228}
229
230static void set_emss(struct c4iw_ep *ep, u16 opt)
231{
232 ep->emss = ep->com.dev->rdev.lldi.mtus[GET_TCPOPT_MSS(opt)] - 40;
233 ep->mss = ep->emss;
234 if (GET_TCPOPT_TSTAMP(opt))
235 ep->emss -= 12;
236 if (ep->emss < 128)
237 ep->emss = 128;
238 PDBG("%s mss_idx %u mss %u emss=%u\n", __func__, GET_TCPOPT_MSS(opt),
239 ep->mss, ep->emss);
240}
241
242static enum c4iw_ep_state state_read(struct c4iw_ep_common *epc)
243{
cfdda9d7
SW		 244 enum c4iw_ep_state state;
245
2f5b48c3 246 mutex_lock(&epc->mutex);
cfdda9d7 247 state = epc->state;
2f5b48c3 248 mutex_unlock(&epc->mutex);
cfdda9d7
SW		 249 return state;
250}
251
252static void __state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new)
253{
254 epc->state = new;
255}
256
257static void state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new)
258{
2f5b48c3 259 mutex_lock(&epc->mutex);
cfdda9d7
SW		 260 PDBG("%s - %s -> %s\n", __func__, states[epc->state], states[new]);
261 __state_set(epc, new);
2f5b48c3 262 mutex_unlock(&epc->mutex);
cfdda9d7
SW		 263 return;
264}
265
266static void *alloc_ep(int size, gfp_t gfp)
267{
268 struct c4iw_ep_common *epc;
269
270 epc = kzalloc(size, gfp);
271 if (epc) {
272 kref_init(&epc->kref);
2f5b48c3 273 mutex_init(&epc->mutex);
aadc4df3 274 c4iw_init_wr_wait(&epc->wr_wait);
cfdda9d7
SW		 275 }
276 PDBG("%s alloc ep %p\n", __func__, epc);
277 return epc;
278}
279
280void _c4iw_free_ep(struct kref *kref)
281{
282 struct c4iw_ep *ep;
283
284 ep = container_of(kref, struct c4iw_ep, com.kref);
285 PDBG("%s ep %p state %s\n", __func__, ep, states[state_read(&ep->com)]);
325abead
VP		 286 if (test_bit(QP_REFERENCED, &ep->com.flags))
287 deref_qp(ep);
cfdda9d7 288 if (test_bit(RELEASE_RESOURCES, &ep->com.flags)) {
fe7e0a4d 289 remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid);
cfdda9d7
SW		 290 cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid);
291 dst_release(ep->dst);
292 cxgb4_l2t_release(ep->l2t);
293 }
294 kfree(ep);
295}
296
297static void release_ep_resources(struct c4iw_ep *ep)
298{
299 set_bit(RELEASE_RESOURCES, &ep->com.flags);
300 c4iw_put_ep(&ep->com);
301}
302
cfdda9d7
SW		 303static int status2errno(int status)
304{
305 switch (status) {
306 case CPL_ERR_NONE:
307 return 0;
308 case CPL_ERR_CONN_RESET:
309 return -ECONNRESET;
310 case CPL_ERR_ARP_MISS:
311 return -EHOSTUNREACH;
312 case CPL_ERR_CONN_TIMEDOUT:
313 return -ETIMEDOUT;
314 case CPL_ERR_TCAM_FULL:
315 return -ENOMEM;
316 case CPL_ERR_CONN_EXIST:
317 return -EADDRINUSE;
318 default:
319 return -EIO;
320 }
321}
322
323/*
324 * Try and reuse skbs already allocated...
325 */
326static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp)
327{
328 if (skb && !skb_is_nonlinear(skb) && !skb_cloned(skb)) {
329 skb_trim(skb, 0);
330 skb_get(skb);
331 skb_reset_transport_header(skb);
332 } else {
333 skb = alloc_skb(len, gfp);
334 }
b38a0ad8 335 t4_set_arp_err_handler(skb, NULL, NULL);
cfdda9d7
SW		 336 return skb;
337}
338
830662f6
VP		 339static struct net_device *get_real_dev(struct net_device *egress_dev)
340{
341 struct net_device *phys_dev = egress_dev;
342 if (egress_dev->priv_flags & IFF_802_1Q_VLAN)
343 phys_dev = vlan_dev_real_dev(egress_dev);
344 return phys_dev;
345}
346
347static int our_interface(struct c4iw_dev *dev, struct net_device *egress_dev)
348{
349 int i;
350
351 egress_dev = get_real_dev(egress_dev);
352 for (i = 0; i < dev->rdev.lldi.nports; i++)
353 if (dev->rdev.lldi.ports[i] == egress_dev)
354 return 1;
355 return 0;
356}
357
358static struct dst_entry *find_route6(struct c4iw_dev *dev, __u8 *local_ip,
359 __u8 *peer_ip, __be16 local_port,
360 __be16 peer_port, u8 tos,
361 __u32 sin6_scope_id)
362{
363 struct dst_entry *dst = NULL;
364
365 if (IS_ENABLED(CONFIG_IPV6)) {
366 struct flowi6 fl6;
367
368 memset(&fl6, 0, sizeof(fl6));
369 memcpy(&fl6.daddr, peer_ip, 16);
370 memcpy(&fl6.saddr, local_ip, 16);
371 if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL)
372 fl6.flowi6_oif = sin6_scope_id;
373 dst = ip6_route_output(&init_net, NULL, &fl6);
374 if (!dst)
375 goto out;
376 if (!our_interface(dev, ip6_dst_idev(dst)->dev) &&
377 !(ip6_dst_idev(dst)->dev->flags & IFF_LOOPBACK)) {
378 dst_release(dst);
379 dst = NULL;
380 }
381 }
382
383out:
384 return dst;
385}
386
387static struct dst_entry *find_route(struct c4iw_dev *dev, __be32 local_ip,
cfdda9d7
SW		 388 __be32 peer_ip, __be16 local_port,
389 __be16 peer_port, u8 tos)
390{
391 struct rtable *rt;
31e4543d 392 struct flowi4 fl4;
830662f6 393 struct neighbour *n;
78fbfd8a 394
31e4543d 395 rt = ip_route_output_ports(&init_net, &fl4, NULL, peer_ip, local_ip,
78fbfd8a
DM		 396 peer_port, local_port, IPPROTO_TCP,
397 tos, 0);
b23dd4fe 398 if (IS_ERR(rt))
cfdda9d7 399 return NULL;
830662f6
VP		 400 n = dst_neigh_lookup(&rt->dst, &peer_ip);
401 if (!n)
402 return NULL;
f8e81908
SW		 403 if (!our_interface(dev, n->dev) &&
404 !(n->dev->flags & IFF_LOOPBACK)) {
830662f6
VP		 405 dst_release(&rt->dst);
406 return NULL;
407 }
408 neigh_release(n);
409 return &rt->dst;
cfdda9d7
SW		 410}
411
412static void arp_failure_discard(void *handle, struct sk_buff *skb)
413{
414 PDBG("%s c4iw_dev %p\n", __func__, handle);
415 kfree_skb(skb);
416}
417
418/*
419 * Handle an ARP failure for an active open.
420 */
421static void act_open_req_arp_failure(void *handle, struct sk_buff *skb)
422{
423 printk(KERN_ERR MOD "ARP failure duing connect\n");
424 kfree_skb(skb);
425}
426
427/*
428 * Handle an ARP failure for a CPL_ABORT_REQ. Change it into a no RST variant
429 * and send it along.
430 */
431static void abort_arp_failure(void *handle, struct sk_buff *skb)
432{
433 struct c4iw_rdev *rdev = handle;
434 struct cpl_abort_req *req = cplhdr(skb);
435
436 PDBG("%s rdev %p\n", __func__, rdev);
437 req->cmd = CPL_ABORT_NO_RST;
438 c4iw_ofld_send(rdev, skb);
439}
440
441static void send_flowc(struct c4iw_ep *ep, struct sk_buff *skb)
442{
443 unsigned int flowclen = 80;
444 struct fw_flowc_wr *flowc;
445 int i;
446
447 skb = get_skb(skb, flowclen, GFP_KERNEL);
448 flowc = (struct fw_flowc_wr *)__skb_put(skb, flowclen);
449
450 flowc->op_to_nparams = cpu_to_be32(FW_WR_OP(FW_FLOWC_WR) |
451 FW_FLOWC_WR_NPARAMS(8));
452 flowc->flowid_len16 = cpu_to_be32(FW_WR_LEN16(DIV_ROUND_UP(flowclen,
453 16)) | FW_WR_FLOWID(ep->hwtid));
454
455 flowc->mnemval[0].mnemonic = FW_FLOWC_MNEM_PFNVFN;
94788657 456 flowc->mnemval[0].val = cpu_to_be32(PCI_FUNC(ep->com.dev->rdev.lldi.pdev->devfn) << 8);
cfdda9d7
SW		 457 flowc->mnemval[1].mnemonic = FW_FLOWC_MNEM_CH;
458 flowc->mnemval[1].val = cpu_to_be32(ep->tx_chan);
459 flowc->mnemval[2].mnemonic = FW_FLOWC_MNEM_PORT;
460 flowc->mnemval[2].val = cpu_to_be32(ep->tx_chan);
461 flowc->mnemval[3].mnemonic = FW_FLOWC_MNEM_IQID;
462 flowc->mnemval[3].val = cpu_to_be32(ep->rss_qid);
463 flowc->mnemval[4].mnemonic = FW_FLOWC_MNEM_SNDNXT;
464 flowc->mnemval[4].val = cpu_to_be32(ep->snd_seq);
465 flowc->mnemval[5].mnemonic = FW_FLOWC_MNEM_RCVNXT;
466 flowc->mnemval[5].val = cpu_to_be32(ep->rcv_seq);
467 flowc->mnemval[6].mnemonic = FW_FLOWC_MNEM_SNDBUF;
468 flowc->mnemval[6].val = cpu_to_be32(snd_win);
469 flowc->mnemval[7].mnemonic = FW_FLOWC_MNEM_MSS;
470 flowc->mnemval[7].val = cpu_to_be32(ep->emss);
471 /* Pad WR to 16 byte boundary */
472 flowc->mnemval[8].mnemonic = 0;
473 flowc->mnemval[8].val = 0;
474 for (i = 0; i < 9; i++) {
475 flowc->mnemval[i].r4[0] = 0;
476 flowc->mnemval[i].r4[1] = 0;
477 flowc->mnemval[i].r4[2] = 0;
478 }
479
480 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
481 c4iw_ofld_send(&ep->com.dev->rdev, skb);
482}
483
484static int send_halfclose(struct c4iw_ep *ep, gfp_t gfp)
485{
486 struct cpl_close_con_req *req;
487 struct sk_buff *skb;
488 int wrlen = roundup(sizeof *req, 16);
489
490 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
491 skb = get_skb(NULL, wrlen, gfp);
492 if (!skb) {
493 printk(KERN_ERR MOD "%s - failed to alloc skb\n", __func__);
494 return -ENOMEM;
495 }
496 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
497 t4_set_arp_err_handler(skb, NULL, arp_failure_discard);
498 req = (struct cpl_close_con_req *) skb_put(skb, wrlen);
499 memset(req, 0, wrlen);
500 INIT_TP_WR(req, ep->hwtid);
501 OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_CLOSE_CON_REQ,
502 ep->hwtid));
503 return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
504}
505
506static int send_abort(struct c4iw_ep *ep, struct sk_buff *skb, gfp_t gfp)
507{
508 struct cpl_abort_req *req;
509 int wrlen = roundup(sizeof *req, 16);
510
511 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
512 skb = get_skb(skb, wrlen, gfp);
513 if (!skb) {
514 printk(KERN_ERR MOD "%s - failed to alloc skb.\n",
515 __func__);
516 return -ENOMEM;
517 }
518 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
519 t4_set_arp_err_handler(skb, &ep->com.dev->rdev, abort_arp_failure);
520 req = (struct cpl_abort_req *) skb_put(skb, wrlen);
521 memset(req, 0, wrlen);
522 INIT_TP_WR(req, ep->hwtid);
523 OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_REQ, ep->hwtid));
524 req->cmd = CPL_ABORT_SEND_RST;
525 return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
526}
527
528static int send_connect(struct c4iw_ep *ep)
529{
530 struct cpl_act_open_req *req;
f079af7a 531 struct cpl_t5_act_open_req *t5_req;
830662f6
VP		 532 struct cpl_act_open_req6 *req6;
533 struct cpl_t5_act_open_req6 *t5_req6;
cfdda9d7
SW		 534 struct sk_buff *skb;
535 u64 opt0;
536 u32 opt2;
537 unsigned int mtu_idx;
538 int wscale;
830662f6
VP		 539 int wrlen;
540 int sizev4 = is_t4(ep->com.dev->rdev.lldi.adapter_type) ?
541 sizeof(struct cpl_act_open_req) :
542 sizeof(struct cpl_t5_act_open_req);
543 int sizev6 = is_t4(ep->com.dev->rdev.lldi.adapter_type) ?
544 sizeof(struct cpl_act_open_req6) :
545 sizeof(struct cpl_t5_act_open_req6);
546 struct sockaddr_in *la = (struct sockaddr_in *)&ep->com.local_addr;
547 struct sockaddr_in *ra = (struct sockaddr_in *)&ep->com.remote_addr;
548 struct sockaddr_in6 *la6 = (struct sockaddr_in6 *)&ep->com.local_addr;
549 struct sockaddr_in6 *ra6 = (struct sockaddr_in6 *)&ep->com.remote_addr;
550
551 wrlen = (ep->com.remote_addr.ss_family == AF_INET) ?
552 roundup(sizev4, 16) :
553 roundup(sizev6, 16);
cfdda9d7
SW		 554
555 PDBG("%s ep %p atid %u\n", __func__, ep, ep->atid);
556
557 skb = get_skb(NULL, wrlen, GFP_KERNEL);
558 if (!skb) {
559 printk(KERN_ERR MOD "%s - failed to alloc skb.\n",
560 __func__);
561 return -ENOMEM;
562 }
d4f1a5c6 563 set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx);
cfdda9d7
SW		 564
565 cxgb4_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx);
566 wscale = compute_wscale(rcv_win);
5be78ee9
VP		 567 opt0 = (nocong ? NO_CONG(1) : 0) |
568 KEEP_ALIVE(1) |
ba6d3925 569 DELACK(1) |
cfdda9d7
SW		 570 WND_SCALE(wscale) |
571 MSS_IDX(mtu_idx) |
572 L2T_IDX(ep->l2t->idx) |
573 TX_CHAN(ep->tx_chan) |
574 SMAC_SEL(ep->smac_idx) |
575 DSCP(ep->tos) |
b48f3b9c 576 ULP_MODE(ULP_MODE_TCPDDP) |
cfdda9d7
SW		 577 RCV_BUFSIZ(rcv_win>>10);
578 opt2 = RX_CHANNEL(0) |
5be78ee9 579 CCTRL_ECN(enable_ecn) |
cfdda9d7
SW		 580 RSS_QUEUE_VALID | RSS_QUEUE(ep->rss_qid);
581 if (enable_tcp_timestamps)
582 opt2 |= TSTAMPS_EN(1);
583 if (enable_tcp_sack)
584 opt2 |= SACK_EN(1);
585 if (wscale && enable_tcp_window_scaling)
586 opt2 |= WND_SCALE_EN(1);
587 t4_set_arp_err_handler(skb, NULL, act_open_req_arp_failure);
588
f079af7a 589 if (is_t4(ep->com.dev->rdev.lldi.adapter_type)) {
830662f6
VP		 590 if (ep->com.remote_addr.ss_family == AF_INET) {
591 req = (struct cpl_act_open_req *) skb_put(skb, wrlen);
592 INIT_TP_WR(req, 0);
593 OPCODE_TID(req) = cpu_to_be32(
594 MK_OPCODE_TID(CPL_ACT_OPEN_REQ,
595 ((ep->rss_qid << 14) | ep->atid)));
596 req->local_port = la->sin_port;
597 req->peer_port = ra->sin_port;
598 req->local_ip = la->sin_addr.s_addr;
599 req->peer_ip = ra->sin_addr.s_addr;
600 req->opt0 = cpu_to_be64(opt0);
41b4f86c
KS		 601 req->params = cpu_to_be32(cxgb4_select_ntuple(
602 ep->com.dev->rdev.lldi.ports[0],
603 ep->l2t));
830662f6
VP		 604 req->opt2 = cpu_to_be32(opt2);
605 } else {
606 req6 = (struct cpl_act_open_req6 *)skb_put(skb, wrlen);
607
608 INIT_TP_WR(req6, 0);
609 OPCODE_TID(req6) = cpu_to_be32(
610 MK_OPCODE_TID(CPL_ACT_OPEN_REQ6,
611 ((ep->rss_qid<<14)|ep->atid)));
612 req6->local_port = la6->sin6_port;
613 req6->peer_port = ra6->sin6_port;
614 req6->local_ip_hi = *((__be64 *)
615 (la6->sin6_addr.s6_addr));
616 req6->local_ip_lo = *((__be64 *)
617 (la6->sin6_addr.s6_addr + 8));
618 req6->peer_ip_hi = *((__be64 *)
619 (ra6->sin6_addr.s6_addr));
620 req6->peer_ip_lo = *((__be64 *)
621 (ra6->sin6_addr.s6_addr + 8));
622 req6->opt0 = cpu_to_be64(opt0);
41b4f86c
KS		 623 req6->params = cpu_to_be32(cxgb4_select_ntuple(
624 ep->com.dev->rdev.lldi.ports[0],
625 ep->l2t));
830662f6
VP		 626 req6->opt2 = cpu_to_be32(opt2);
627 }
f079af7a 628 } else {
830662f6
VP		 629 if (ep->com.remote_addr.ss_family == AF_INET) {
630 t5_req = (struct cpl_t5_act_open_req *)
631 skb_put(skb, wrlen);
632 INIT_TP_WR(t5_req, 0);
633 OPCODE_TID(t5_req) = cpu_to_be32(
f079af7a
VP		 634 MK_OPCODE_TID(CPL_ACT_OPEN_REQ,
635 ((ep->rss_qid << 14) | ep->atid)));
830662f6
VP		 636 t5_req->local_port = la->sin_port;
637 t5_req->peer_port = ra->sin_port;
638 t5_req->local_ip = la->sin_addr.s_addr;
639 t5_req->peer_ip = ra->sin_addr.s_addr;
640 t5_req->opt0 = cpu_to_be64(opt0);
641 t5_req->params = cpu_to_be64(V_FILTER_TUPLE(
41b4f86c
KS		 642 cxgb4_select_ntuple(
643 ep->com.dev->rdev.lldi.ports[0],
644 ep->l2t)));
830662f6
VP		 645 t5_req->opt2 = cpu_to_be32(opt2);
646 } else {
647 t5_req6 = (struct cpl_t5_act_open_req6 *)
648 skb_put(skb, wrlen);
649 INIT_TP_WR(t5_req6, 0);
650 OPCODE_TID(t5_req6) = cpu_to_be32(
651 MK_OPCODE_TID(CPL_ACT_OPEN_REQ6,
652 ((ep->rss_qid<<14)|ep->atid)));
653 t5_req6->local_port = la6->sin6_port;
654 t5_req6->peer_port = ra6->sin6_port;
655 t5_req6->local_ip_hi = *((__be64 *)
656 (la6->sin6_addr.s6_addr));
657 t5_req6->local_ip_lo = *((__be64 *)
658 (la6->sin6_addr.s6_addr + 8));
659 t5_req6->peer_ip_hi = *((__be64 *)
660 (ra6->sin6_addr.s6_addr));
661 t5_req6->peer_ip_lo = *((__be64 *)
662 (ra6->sin6_addr.s6_addr + 8));
663 t5_req6->opt0 = cpu_to_be64(opt0);
664 t5_req6->params = (__force __be64)cpu_to_be32(
41b4f86c
KS		 665 cxgb4_select_ntuple(
666 ep->com.dev->rdev.lldi.ports[0],
667 ep->l2t));
830662f6
VP		 668 t5_req6->opt2 = cpu_to_be32(opt2);
669 }
f079af7a
VP		 670 }
671
793dad94 672 set_bit(ACT_OPEN_REQ, &ep->com.history);
cfdda9d7
SW		 673 return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
674}
675
d2fe99e8
KS		 676static void send_mpa_req(struct c4iw_ep *ep, struct sk_buff *skb,
677 u8 mpa_rev_to_use)
cfdda9d7
SW		 678{
679 int mpalen, wrlen;
680 struct fw_ofld_tx_data_wr *req;
681 struct mpa_message *mpa;
d2fe99e8 682 struct mpa_v2_conn_params mpa_v2_params;
cfdda9d7
SW		 683
684 PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen);
685
686 BUG_ON(skb_cloned(skb));
687
688 mpalen = sizeof(*mpa) + ep->plen;
d2fe99e8
KS		 689 if (mpa_rev_to_use == 2)
690 mpalen += sizeof(struct mpa_v2_conn_params);
cfdda9d7
SW		 691 wrlen = roundup(mpalen + sizeof *req, 16);
692 skb = get_skb(skb, wrlen, GFP_KERNEL);
693 if (!skb) {
694 connect_reply_upcall(ep, -ENOMEM);
695 return;
696 }
697 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
698
699 req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen);
700 memset(req, 0, wrlen);
701 req->op_to_immdlen = cpu_to_be32(
702 FW_WR_OP(FW_OFLD_TX_DATA_WR) |
703 FW_WR_COMPL(1) |
704 FW_WR_IMMDLEN(mpalen));
705 req->flowid_len16 = cpu_to_be32(
706 FW_WR_FLOWID(ep->hwtid) |
707 FW_WR_LEN16(wrlen >> 4));
708 req->plen = cpu_to_be32(mpalen);
709 req->tunnel_to_proxy = cpu_to_be32(
710 FW_OFLD_TX_DATA_WR_FLUSH(1) |
711 FW_OFLD_TX_DATA_WR_SHOVE(1));
712
713 mpa = (struct mpa_message *)(req + 1);
714 memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key));
715 mpa->flags = (crc_enabled ? MPA_CRC : 0) |
d2fe99e8
KS		 716 (markers_enabled ? MPA_MARKERS : 0) |
717 (mpa_rev_to_use == 2 ? MPA_ENHANCED_RDMA_CONN : 0);
cfdda9d7 718 mpa->private_data_size = htons(ep->plen);
d2fe99e8 719 mpa->revision = mpa_rev_to_use;
01b225e1 720 if (mpa_rev_to_use == 1) {
d2fe99e8 721 ep->tried_with_mpa_v1 = 1;
01b225e1
KS		 722 ep->retry_with_mpa_v1 = 0;
723 }
d2fe99e8
KS		 724
725 if (mpa_rev_to_use == 2) {
f747c34a
RD		 726 mpa->private_data_size = htons(ntohs(mpa->private_data_size) +
727 sizeof (struct mpa_v2_conn_params));
d2fe99e8
KS		 728 mpa_v2_params.ird = htons((u16)ep->ird);
729 mpa_v2_params.ord = htons((u16)ep->ord);
730
731 if (peer2peer) {
732 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL);
733 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE)
734 mpa_v2_params.ord |=
735 htons(MPA_V2_RDMA_WRITE_RTR);
736 else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ)
737 mpa_v2_params.ord |=
738 htons(MPA_V2_RDMA_READ_RTR);
739 }
740 memcpy(mpa->private_data, &mpa_v2_params,
741 sizeof(struct mpa_v2_conn_params));
cfdda9d7 742
d2fe99e8
KS		 743 if (ep->plen)
744 memcpy(mpa->private_data +
745 sizeof(struct mpa_v2_conn_params),
746 ep->mpa_pkt + sizeof(*mpa), ep->plen);
747 } else
748 if (ep->plen)
749 memcpy(mpa->private_data,
750 ep->mpa_pkt + sizeof(*mpa), ep->plen);
cfdda9d7
SW		 751
752 /*
753 * Reference the mpa skb. This ensures the data area
754 * will remain in memory until the hw acks the tx.
755 * Function fw4_ack() will deref it.
756 */
757 skb_get(skb);
758 t4_set_arp_err_handler(skb, NULL, arp_failure_discard);
759 BUG_ON(ep->mpa_skb);
760 ep->mpa_skb = skb;
761 c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
762 start_ep_timer(ep);
763 state_set(&ep->com, MPA_REQ_SENT);
764 ep->mpa_attr.initiator = 1;
765 return;
766}
767
768static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen)
769{
770 int mpalen, wrlen;
771 struct fw_ofld_tx_data_wr *req;
772 struct mpa_message *mpa;
773 struct sk_buff *skb;
d2fe99e8 774 struct mpa_v2_conn_params mpa_v2_params;
cfdda9d7
SW		 775
776 PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen);
777
778 mpalen = sizeof(*mpa) + plen;
d2fe99e8
KS		 779 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn)
780 mpalen += sizeof(struct mpa_v2_conn_params);
cfdda9d7
SW		 781 wrlen = roundup(mpalen + sizeof *req, 16);
782
783 skb = get_skb(NULL, wrlen, GFP_KERNEL);
784 if (!skb) {
785 printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__);
786 return -ENOMEM;
787 }
788 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
789
790 req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen);
791 memset(req, 0, wrlen);
792 req->op_to_immdlen = cpu_to_be32(
793 FW_WR_OP(FW_OFLD_TX_DATA_WR) |
794 FW_WR_COMPL(1) |
795 FW_WR_IMMDLEN(mpalen));
796 req->flowid_len16 = cpu_to_be32(
797 FW_WR_FLOWID(ep->hwtid) |
798 FW_WR_LEN16(wrlen >> 4));
799 req->plen = cpu_to_be32(mpalen);
800 req->tunnel_to_proxy = cpu_to_be32(
801 FW_OFLD_TX_DATA_WR_FLUSH(1) |
802 FW_OFLD_TX_DATA_WR_SHOVE(1));
803
804 mpa = (struct mpa_message *)(req + 1);
805 memset(mpa, 0, sizeof(*mpa));
806 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key));
807 mpa->flags = MPA_REJECT;
fe7e0a4d 808 mpa->revision = ep->mpa_attr.version;
cfdda9d7 809 mpa->private_data_size = htons(plen);
d2fe99e8
KS		 810
811 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
812 mpa->flags |= MPA_ENHANCED_RDMA_CONN;
f747c34a
RD		 813 mpa->private_data_size = htons(ntohs(mpa->private_data_size) +
814 sizeof (struct mpa_v2_conn_params));
d2fe99e8
KS		 815 mpa_v2_params.ird = htons(((u16)ep->ird) |
816 (peer2peer ? MPA_V2_PEER2PEER_MODEL :
817 0));
818 mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ?
819 (p2p_type ==
820 FW_RI_INIT_P2PTYPE_RDMA_WRITE ?
821 MPA_V2_RDMA_WRITE_RTR : p2p_type ==
822 FW_RI_INIT_P2PTYPE_READ_REQ ?
823 MPA_V2_RDMA_READ_RTR : 0) : 0));
824 memcpy(mpa->private_data, &mpa_v2_params,
825 sizeof(struct mpa_v2_conn_params));
826
827 if (ep->plen)
828 memcpy(mpa->private_data +
829 sizeof(struct mpa_v2_conn_params), pdata, plen);
830 } else
831 if (plen)
832 memcpy(mpa->private_data, pdata, plen);
cfdda9d7
SW		 833
834 /*
835 * Reference the mpa skb again. This ensures the data area
836 * will remain in memory until the hw acks the tx.
837 * Function fw4_ack() will deref it.
838 */
839 skb_get(skb);
840 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
841 t4_set_arp_err_handler(skb, NULL, arp_failure_discard);
842 BUG_ON(ep->mpa_skb);
843 ep->mpa_skb = skb;
844 return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
845}
846
847static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen)
848{
849 int mpalen, wrlen;
850 struct fw_ofld_tx_data_wr *req;
851 struct mpa_message *mpa;
852 struct sk_buff *skb;
d2fe99e8 853 struct mpa_v2_conn_params mpa_v2_params;
cfdda9d7
SW		 854
855 PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen);
856
857 mpalen = sizeof(*mpa) + plen;
d2fe99e8
KS		 858 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn)
859 mpalen += sizeof(struct mpa_v2_conn_params);
cfdda9d7
SW		 860 wrlen = roundup(mpalen + sizeof *req, 16);
861
862 skb = get_skb(NULL, wrlen, GFP_KERNEL);
863 if (!skb) {
864 printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__);
865 return -ENOMEM;
866 }
867 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
868
869 req = (struct fw_ofld_tx_data_wr *) skb_put(skb, wrlen);
870 memset(req, 0, wrlen);
871 req->op_to_immdlen = cpu_to_be32(
872 FW_WR_OP(FW_OFLD_TX_DATA_WR) |
873 FW_WR_COMPL(1) |
874 FW_WR_IMMDLEN(mpalen));
875 req->flowid_len16 = cpu_to_be32(
876 FW_WR_FLOWID(ep->hwtid) |
877 FW_WR_LEN16(wrlen >> 4));
878 req->plen = cpu_to_be32(mpalen);
879 req->tunnel_to_proxy = cpu_to_be32(
880 FW_OFLD_TX_DATA_WR_FLUSH(1) |
881 FW_OFLD_TX_DATA_WR_SHOVE(1));
882
883 mpa = (struct mpa_message *)(req + 1);
884 memset(mpa, 0, sizeof(*mpa));
885 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key));
886 mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) |
887 (markers_enabled ? MPA_MARKERS : 0);
d2fe99e8 888 mpa->revision = ep->mpa_attr.version;
cfdda9d7 889 mpa->private_data_size = htons(plen);
d2fe99e8
KS		 890
891 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
892 mpa->flags |= MPA_ENHANCED_RDMA_CONN;
f747c34a
RD		 893 mpa->private_data_size = htons(ntohs(mpa->private_data_size) +
894 sizeof (struct mpa_v2_conn_params));
d2fe99e8
KS		 895 mpa_v2_params.ird = htons((u16)ep->ird);
896 mpa_v2_params.ord = htons((u16)ep->ord);
897 if (peer2peer && (ep->mpa_attr.p2p_type !=
898 FW_RI_INIT_P2PTYPE_DISABLED)) {
899 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL);
900
901 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE)
902 mpa_v2_params.ord |=
903 htons(MPA_V2_RDMA_WRITE_RTR);
904 else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ)
905 mpa_v2_params.ord |=
906 htons(MPA_V2_RDMA_READ_RTR);
907 }
908
909 memcpy(mpa->private_data, &mpa_v2_params,
910 sizeof(struct mpa_v2_conn_params));
911
912 if (ep->plen)
913 memcpy(mpa->private_data +
914 sizeof(struct mpa_v2_conn_params), pdata, plen);
915 } else
916 if (plen)
917 memcpy(mpa->private_data, pdata, plen);
cfdda9d7
SW		 918
919 /*
920 * Reference the mpa skb. This ensures the data area
921 * will remain in memory until the hw acks the tx.
922 * Function fw4_ack() will deref it.
923 */
924 skb_get(skb);
925 t4_set_arp_err_handler(skb, NULL, arp_failure_discard);
926 ep->mpa_skb = skb;
927 state_set(&ep->com, MPA_REP_SENT);
928 return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
929}
930
931static int act_establish(struct c4iw_dev *dev, struct sk_buff *skb)
932{
933 struct c4iw_ep *ep;
934 struct cpl_act_establish *req = cplhdr(skb);
935 unsigned int tid = GET_TID(req);
936 unsigned int atid = GET_TID_TID(ntohl(req->tos_atid));
937 struct tid_info *t = dev->rdev.lldi.tids;
938
939 ep = lookup_atid(t, atid);
940
941 PDBG("%s ep %p tid %u snd_isn %u rcv_isn %u\n", __func__, ep, tid,
942 be32_to_cpu(req->snd_isn), be32_to_cpu(req->rcv_isn));
943
944 dst_confirm(ep->dst);
945
946 /* setup the hwtid for this connection */
947 ep->hwtid = tid;
948 cxgb4_insert_tid(t, ep, tid);
793dad94 949 insert_handle(dev, &dev->hwtid_idr, ep, ep->hwtid);
cfdda9d7
SW		 950
951 ep->snd_seq = be32_to_cpu(req->snd_isn);
952 ep->rcv_seq = be32_to_cpu(req->rcv_isn);
953
954 set_emss(ep, ntohs(req->tcp_opt));
955
956 /* dealloc the atid */
793dad94 957 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, atid);
cfdda9d7 958 cxgb4_free_atid(t, atid);
793dad94 959 set_bit(ACT_ESTAB, &ep->com.history);
cfdda9d7
SW		 960
961 /* start MPA negotiation */
962 send_flowc(ep, NULL);
d2fe99e8
KS		 963 if (ep->retry_with_mpa_v1)
964 send_mpa_req(ep, skb, 1);
965 else
966 send_mpa_req(ep, skb, mpa_rev);
cfdda9d7
SW		 967
968 return 0;
969}
970
971static void close_complete_upcall(struct c4iw_ep *ep)
972{
973 struct iw_cm_event event;
974
975 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
976 memset(&event, 0, sizeof(event));
977 event.event = IW_CM_EVENT_CLOSE;
978 if (ep->com.cm_id) {
979 PDBG("close complete delivered ep %p cm_id %p tid %u\n",
980 ep, ep->com.cm_id, ep->hwtid);
981 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
982 ep->com.cm_id->rem_ref(ep->com.cm_id);
983 ep->com.cm_id = NULL;
793dad94 984 set_bit(CLOSE_UPCALL, &ep->com.history);
cfdda9d7
SW		 985 }
986}
987
988static int abort_connection(struct c4iw_ep *ep, struct sk_buff *skb, gfp_t gfp)
989{
990 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
991 close_complete_upcall(ep);
992 state_set(&ep->com, ABORTING);
793dad94 993 set_bit(ABORT_CONN, &ep->com.history);
cfdda9d7
SW		 994 return send_abort(ep, skb, gfp);
995}
996
997static void peer_close_upcall(struct c4iw_ep *ep)
998{
999 struct iw_cm_event event;
1000
1001 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1002 memset(&event, 0, sizeof(event));
1003 event.event = IW_CM_EVENT_DISCONNECT;
1004 if (ep->com.cm_id) {
1005 PDBG("peer close delivered ep %p cm_id %p tid %u\n",
1006 ep, ep->com.cm_id, ep->hwtid);
1007 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
793dad94 1008 set_bit(DISCONN_UPCALL, &ep->com.history);
cfdda9d7
SW		 1009 }
1010}
1011
1012static void peer_abort_upcall(struct c4iw_ep *ep)
1013{
1014 struct iw_cm_event event;
1015
1016 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1017 memset(&event, 0, sizeof(event));
1018 event.event = IW_CM_EVENT_CLOSE;
1019 event.status = -ECONNRESET;
1020 if (ep->com.cm_id) {
1021 PDBG("abort delivered ep %p cm_id %p tid %u\n", ep,
1022 ep->com.cm_id, ep->hwtid);
1023 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1024 ep->com.cm_id->rem_ref(ep->com.cm_id);
1025 ep->com.cm_id = NULL;
793dad94 1026 set_bit(ABORT_UPCALL, &ep->com.history);
cfdda9d7
SW		 1027 }
1028}
1029
1030static void connect_reply_upcall(struct c4iw_ep *ep, int status)
1031{
1032 struct iw_cm_event event;
1033
1034 PDBG("%s ep %p tid %u status %d\n", __func__, ep, ep->hwtid, status);
1035 memset(&event, 0, sizeof(event));
1036 event.event = IW_CM_EVENT_CONNECT_REPLY;
1037 event.status = status;
24d44a39
SW		 1038 memcpy(&event.local_addr, &ep->com.local_addr,
1039 sizeof(ep->com.local_addr));
1040 memcpy(&event.remote_addr, &ep->com.remote_addr,
1041 sizeof(ep->com.remote_addr));
cfdda9d7
SW		 1042
1043 if ((status == 0) || (status == -ECONNREFUSED)) {
d2fe99e8
KS		 1044 if (!ep->tried_with_mpa_v1) {
1045 /* this means MPA_v2 is used */
1046 event.private_data_len = ep->plen -
1047 sizeof(struct mpa_v2_conn_params);
1048 event.private_data = ep->mpa_pkt +
1049 sizeof(struct mpa_message) +
1050 sizeof(struct mpa_v2_conn_params);
1051 } else {
1052 /* this means MPA_v1 is used */
1053 event.private_data_len = ep->plen;
1054 event.private_data = ep->mpa_pkt +
1055 sizeof(struct mpa_message);
1056 }
cfdda9d7 1057 }
85963e4c
RD		 1058
1059 PDBG("%s ep %p tid %u status %d\n", __func__, ep,
1060 ep->hwtid, status);
793dad94 1061 set_bit(CONN_RPL_UPCALL, &ep->com.history);
85963e4c
RD		 1062 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1063
cfdda9d7
SW		 1064 if (status < 0) {
1065 ep->com.cm_id->rem_ref(ep->com.cm_id);
1066 ep->com.cm_id = NULL;
cfdda9d7
SW		 1067 }
1068}
1069
1070static void connect_request_upcall(struct c4iw_ep *ep)
1071{
1072 struct iw_cm_event event;
1073
1074 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1075 memset(&event, 0, sizeof(event));
1076 event.event = IW_CM_EVENT_CONNECT_REQUEST;
24d44a39
SW		 1077 memcpy(&event.local_addr, &ep->com.local_addr,
1078 sizeof(ep->com.local_addr));
1079 memcpy(&event.remote_addr, &ep->com.remote_addr,
1080 sizeof(ep->com.remote_addr));
cfdda9d7 1081 event.provider_data = ep;
d2fe99e8
KS		 1082 if (!ep->tried_with_mpa_v1) {
1083 /* this means MPA_v2 is used */
1084 event.ord = ep->ord;
1085 event.ird = ep->ird;
1086 event.private_data_len = ep->plen -
1087 sizeof(struct mpa_v2_conn_params);
1088 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) +
1089 sizeof(struct mpa_v2_conn_params);
1090 } else {
1091 /* this means MPA_v1 is used. Send max supported */
1092 event.ord = c4iw_max_read_depth;
1093 event.ird = c4iw_max_read_depth;
1094 event.private_data_len = ep->plen;
1095 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message);
1096 }
cfdda9d7
SW		 1097 if (state_read(&ep->parent_ep->com) != DEAD) {
1098 c4iw_get_ep(&ep->com);
1099 ep->parent_ep->com.cm_id->event_handler(
1100 ep->parent_ep->com.cm_id,
1101 &event);
1102 }
793dad94 1103 set_bit(CONNREQ_UPCALL, &ep->com.history);
cfdda9d7
SW		 1104 c4iw_put_ep(&ep->parent_ep->com);
1105 ep->parent_ep = NULL;
1106}
1107
1108static void established_upcall(struct c4iw_ep *ep)
1109{
1110 struct iw_cm_event event;
1111
1112 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1113 memset(&event, 0, sizeof(event));
1114 event.event = IW_CM_EVENT_ESTABLISHED;
d2fe99e8
KS		 1115 event.ird = ep->ird;
1116 event.ord = ep->ord;
cfdda9d7
SW		 1117 if (ep->com.cm_id) {
1118 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1119 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
793dad94 1120 set_bit(ESTAB_UPCALL, &ep->com.history);
cfdda9d7
SW		 1121 }
1122}
1123
1124static int update_rx_credits(struct c4iw_ep *ep, u32 credits)
1125{
1126 struct cpl_rx_data_ack *req;
1127 struct sk_buff *skb;
1128 int wrlen = roundup(sizeof *req, 16);
1129
1130 PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits);
1131 skb = get_skb(NULL, wrlen, GFP_KERNEL);
1132 if (!skb) {
1133 printk(KERN_ERR MOD "update_rx_credits - cannot alloc skb!\n");
1134 return 0;
1135 }
1136
1137 req = (struct cpl_rx_data_ack *) skb_put(skb, wrlen);
1138 memset(req, 0, wrlen);
1139 INIT_TP_WR(req, ep->hwtid);
1140 OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_RX_DATA_ACK,
1141 ep->hwtid));
ba6d3925
SW		 1142 req->credit_dack = cpu_to_be32(credits | RX_FORCE_ACK(1) |
1143 F_RX_DACK_CHANGE |
1144 V_RX_DACK_MODE(dack_mode));
d4f1a5c6 1145 set_wr_txq(skb, CPL_PRIORITY_ACK, ep->ctrlq_idx);
cfdda9d7
SW		 1146 c4iw_ofld_send(&ep->com.dev->rdev, skb);
1147 return credits;
1148}
1149
1150static void process_mpa_reply(struct c4iw_ep *ep, struct sk_buff *skb)
1151{
1152 struct mpa_message *mpa;
d2fe99e8 1153 struct mpa_v2_conn_params *mpa_v2_params;
cfdda9d7 1154 u16 plen;
d2fe99e8
KS		 1155 u16 resp_ird, resp_ord;
1156 u8 rtr_mismatch = 0, insuff_ird = 0;
cfdda9d7
SW		 1157 struct c4iw_qp_attributes attrs;
1158 enum c4iw_qp_attr_mask mask;
1159 int err;
1160
1161 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1162
1163 /*
1164 * Stop mpa timer. If it expired, then the state has
1165 * changed and we bail since ep_timeout already aborted
1166 * the connection.
1167 */
1168 stop_ep_timer(ep);
1169 if (state_read(&ep->com) != MPA_REQ_SENT)
1170 return;
1171
1172 /*
1173 * If we get more than the supported amount of private data
1174 * then we must fail this connection.
1175 */
1176 if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) {
1177 err = -EINVAL;
1178 goto err;
1179 }
1180
1181 /*
1182 * copy the new data into our accumulation buffer.
1183 */
1184 skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]),
1185 skb->len);
1186 ep->mpa_pkt_len += skb->len;
1187
1188 /*
1189 * if we don't even have the mpa message, then bail.
1190 */
1191 if (ep->mpa_pkt_len < sizeof(*mpa))
1192 return;
1193 mpa = (struct mpa_message *) ep->mpa_pkt;
1194
1195 /* Validate MPA header. */
d2fe99e8
KS		 1196 if (mpa->revision > mpa_rev) {
1197 printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d,"
1198 " Received = %d\n", __func__, mpa_rev, mpa->revision);
cfdda9d7
SW		 1199 err = -EPROTO;
1200 goto err;
1201 }
1202 if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) {
1203 err = -EPROTO;
1204 goto err;
1205 }
1206
1207 plen = ntohs(mpa->private_data_size);
1208
1209 /*
1210 * Fail if there's too much private data.
1211 */
1212 if (plen > MPA_MAX_PRIVATE_DATA) {
1213 err = -EPROTO;
1214 goto err;
1215 }
1216
1217 /*
1218 * If plen does not account for pkt size
1219 */
1220 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) {
1221 err = -EPROTO;
1222 goto err;
1223 }
1224
1225 ep->plen = (u8) plen;
1226
1227 /*
1228 * If we don't have all the pdata yet, then bail.
1229 * We'll continue process when more data arrives.
1230 */
1231 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen))
1232 return;
1233
1234 if (mpa->flags & MPA_REJECT) {
1235 err = -ECONNREFUSED;
1236 goto err;
1237 }
1238
1239 /*
1240 * If we get here we have accumulated the entire mpa
1241 * start reply message including private data. And
1242 * the MPA header is valid.
1243 */
1244 state_set(&ep->com, FPDU_MODE);
1245 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0;
1246 ep->mpa_attr.recv_marker_enabled = markers_enabled;
1247 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0;
d2fe99e8
KS		 1248 ep->mpa_attr.version = mpa->revision;
1249 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
1250
1251 if (mpa->revision == 2) {
1252 ep->mpa_attr.enhanced_rdma_conn =
1253 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0;
1254 if (ep->mpa_attr.enhanced_rdma_conn) {
1255 mpa_v2_params = (struct mpa_v2_conn_params *)
1256 (ep->mpa_pkt + sizeof(*mpa));
1257 resp_ird = ntohs(mpa_v2_params->ird) &
1258 MPA_V2_IRD_ORD_MASK;
1259 resp_ord = ntohs(mpa_v2_params->ord) &
1260 MPA_V2_IRD_ORD_MASK;
1261
1262 /*
1263 * This is a double-check. Ideally, below checks are
1264 * not required since ird/ord stuff has been taken
1265 * care of in c4iw_accept_cr
1266 */
1267 if ((ep->ird < resp_ord) || (ep->ord > resp_ird)) {
1268 err = -ENOMEM;
1269 ep->ird = resp_ord;
1270 ep->ord = resp_ird;
1271 insuff_ird = 1;
1272 }
1273
1274 if (ntohs(mpa_v2_params->ird) &
1275 MPA_V2_PEER2PEER_MODEL) {
1276 if (ntohs(mpa_v2_params->ord) &
1277 MPA_V2_RDMA_WRITE_RTR)
1278 ep->mpa_attr.p2p_type =
1279 FW_RI_INIT_P2PTYPE_RDMA_WRITE;
1280 else if (ntohs(mpa_v2_params->ord) &
1281 MPA_V2_RDMA_READ_RTR)
1282 ep->mpa_attr.p2p_type =
1283 FW_RI_INIT_P2PTYPE_READ_REQ;
1284 }
1285 }
1286 } else if (mpa->revision == 1)
1287 if (peer2peer)
1288 ep->mpa_attr.p2p_type = p2p_type;
1289
cfdda9d7 1290 PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, "
d2fe99e8
KS		 1291 "xmit_marker_enabled=%d, version=%d p2p_type=%d local-p2p_type = "
1292 "%d\n", __func__, ep->mpa_attr.crc_enabled,
1293 ep->mpa_attr.recv_marker_enabled,
1294 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version,
1295 ep->mpa_attr.p2p_type, p2p_type);
1296
1297 /*
1298 * If responder's RTR does not match with that of initiator, assign
1299 * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not
1300 * generated when moving QP to RTS state.
1301 * A TERM message will be sent after QP has moved to RTS state
1302 */
91018f86 1303 if ((ep->mpa_attr.version == 2) && peer2peer &&
d2fe99e8
KS		 1304 (ep->mpa_attr.p2p_type != p2p_type)) {
1305 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
1306 rtr_mismatch = 1;
1307 }
cfdda9d7
SW		 1308
1309 attrs.mpa_attr = ep->mpa_attr;
1310 attrs.max_ird = ep->ird;
1311 attrs.max_ord = ep->ord;
1312 attrs.llp_stream_handle = ep;
1313 attrs.next_state = C4IW_QP_STATE_RTS;
1314
1315 mask = C4IW_QP_ATTR_NEXT_STATE |
1316 C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR |
1317 C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD;
1318
1319 /* bind QP and TID with INIT_WR */
1320 err = c4iw_modify_qp(ep->com.qp->rhp,
1321 ep->com.qp, mask, &attrs, 1);
1322 if (err)
1323 goto err;
d2fe99e8
KS		 1324
1325 /*
1326 * If responder's RTR requirement did not match with what initiator
1327 * supports, generate TERM message
1328 */
1329 if (rtr_mismatch) {
1330 printk(KERN_ERR "%s: RTR mismatch, sending TERM\n", __func__);
1331 attrs.layer_etype = LAYER_MPA | DDP_LLP;
1332 attrs.ecode = MPA_NOMATCH_RTR;
1333 attrs.next_state = C4IW_QP_STATE_TERMINATE;
1334 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
1335 C4IW_QP_ATTR_NEXT_STATE, &attrs, 0);
1336 err = -ENOMEM;
1337 goto out;
1338 }
1339
1340 /*
1341 * Generate TERM if initiator IRD is not sufficient for responder
1342 * provided ORD. Currently, we do the same behaviour even when
1343 * responder provided IRD is also not sufficient as regards to
1344 * initiator ORD.
1345 */
1346 if (insuff_ird) {
1347 printk(KERN_ERR "%s: Insufficient IRD, sending TERM\n",
1348 __func__);
1349 attrs.layer_etype = LAYER_MPA | DDP_LLP;
1350 attrs.ecode = MPA_INSUFF_IRD;
1351 attrs.next_state = C4IW_QP_STATE_TERMINATE;
1352 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
1353 C4IW_QP_ATTR_NEXT_STATE, &attrs, 0);
1354 err = -ENOMEM;
1355 goto out;
1356 }
cfdda9d7
SW		 1357 goto out;
1358err:
b21ef16a
SW		 1359 state_set(&ep->com, ABORTING);
1360 send_abort(ep, skb, GFP_KERNEL);
cfdda9d7
SW		 1361out:
1362 connect_reply_upcall(ep, err);
1363 return;
1364}
1365
1366static void process_mpa_request(struct c4iw_ep *ep, struct sk_buff *skb)
1367{
1368 struct mpa_message *mpa;
d2fe99e8 1369 struct mpa_v2_conn_params *mpa_v2_params;
cfdda9d7
SW		 1370 u16 plen;
1371
1372 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1373
1374 if (state_read(&ep->com) != MPA_REQ_WAIT)
1375 return;
1376
1377 /*
1378 * If we get more than the supported amount of private data
1379 * then we must fail this connection.
1380 */
1381 if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) {
1382 stop_ep_timer(ep);
1383 abort_connection(ep, skb, GFP_KERNEL);
1384 return;
1385 }
1386
1387 PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__);
1388
1389 /*
1390 * Copy the new data into our accumulation buffer.
1391 */
1392 skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]),
1393 skb->len);
1394 ep->mpa_pkt_len += skb->len;
1395
1396 /*
1397 * If we don't even have the mpa message, then bail.
1398 * We'll continue process when more data arrives.
1399 */
1400 if (ep->mpa_pkt_len < sizeof(*mpa))
1401 return;
1402
1403 PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__);
1404 stop_ep_timer(ep);
1405 mpa = (struct mpa_message *) ep->mpa_pkt;
1406
1407 /*
1408 * Validate MPA Header.
1409 */
d2fe99e8
KS		 1410 if (mpa->revision > mpa_rev) {
1411 printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d,"
1412 " Received = %d\n", __func__, mpa_rev, mpa->revision);
7c0a33d6 1413 stop_ep_timer(ep);
cfdda9d7
SW		 1414 abort_connection(ep, skb, GFP_KERNEL);
1415 return;
1416 }
1417
1418 if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) {
7c0a33d6 1419 stop_ep_timer(ep);
cfdda9d7
SW		 1420 abort_connection(ep, skb, GFP_KERNEL);
1421 return;
1422 }
1423
1424 plen = ntohs(mpa->private_data_size);
1425
1426 /*
1427 * Fail if there's too much private data.
1428 */
1429 if (plen > MPA_MAX_PRIVATE_DATA) {
7c0a33d6 1430 stop_ep_timer(ep);
cfdda9d7
SW		 1431 abort_connection(ep, skb, GFP_KERNEL);
1432 return;
1433 }
1434
1435 /*
1436 * If plen does not account for pkt size
1437 */
1438 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) {
7c0a33d6 1439 stop_ep_timer(ep);
cfdda9d7
SW		 1440 abort_connection(ep, skb, GFP_KERNEL);
1441 return;
1442 }
1443 ep->plen = (u8) plen;
1444
1445 /*
1446 * If we don't have all the pdata yet, then bail.
1447 */
1448 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen))
1449 return;
1450
1451 /*
1452 * If we get here we have accumulated the entire mpa
1453 * start reply message including private data.
1454 */
1455 ep->mpa_attr.initiator = 0;
1456 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0;
1457 ep->mpa_attr.recv_marker_enabled = markers_enabled;
1458 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0;
d2fe99e8
KS		 1459 ep->mpa_attr.version = mpa->revision;
1460 if (mpa->revision == 1)
1461 ep->tried_with_mpa_v1 = 1;
1462 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
1463
1464 if (mpa->revision == 2) {
1465 ep->mpa_attr.enhanced_rdma_conn =
1466 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0;
1467 if (ep->mpa_attr.enhanced_rdma_conn) {
1468 mpa_v2_params = (struct mpa_v2_conn_params *)
1469 (ep->mpa_pkt + sizeof(*mpa));
1470 ep->ird = ntohs(mpa_v2_params->ird) &
1471 MPA_V2_IRD_ORD_MASK;
1472 ep->ord = ntohs(mpa_v2_params->ord) &
1473 MPA_V2_IRD_ORD_MASK;
1474 if (ntohs(mpa_v2_params->ird) & MPA_V2_PEER2PEER_MODEL)
1475 if (peer2peer) {
1476 if (ntohs(mpa_v2_params->ord) &
1477 MPA_V2_RDMA_WRITE_RTR)
1478 ep->mpa_attr.p2p_type =
1479 FW_RI_INIT_P2PTYPE_RDMA_WRITE;
1480 else if (ntohs(mpa_v2_params->ord) &
1481 MPA_V2_RDMA_READ_RTR)
1482 ep->mpa_attr.p2p_type =
1483 FW_RI_INIT_P2PTYPE_READ_REQ;
1484 }
1485 }
1486 } else if (mpa->revision == 1)
1487 if (peer2peer)
1488 ep->mpa_attr.p2p_type = p2p_type;
1489
cfdda9d7
SW		 1490 PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, "
1491 "xmit_marker_enabled=%d, version=%d p2p_type=%d\n", __func__,
1492 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled,
1493 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version,
1494 ep->mpa_attr.p2p_type);
1495
1496 state_set(&ep->com, MPA_REQ_RCVD);
1497
1498 /* drive upcall */
1499 connect_request_upcall(ep);
1500 return;
1501}
1502
1503static int rx_data(struct c4iw_dev *dev, struct sk_buff *skb)
1504{
1505 struct c4iw_ep *ep;
1506 struct cpl_rx_data *hdr = cplhdr(skb);
1507 unsigned int dlen = ntohs(hdr->len);
1508 unsigned int tid = GET_TID(hdr);
1509 struct tid_info *t = dev->rdev.lldi.tids;
793dad94 1510 __u8 status = hdr->status;
cfdda9d7
SW		 1511
1512 ep = lookup_tid(t, tid);
1513 PDBG("%s ep %p tid %u dlen %u\n", __func__, ep, ep->hwtid, dlen);
1514 skb_pull(skb, sizeof(*hdr));
1515 skb_trim(skb, dlen);
1516
cfdda9d7
SW		 1517 /* update RX credits */
1518 update_rx_credits(ep, dlen);
1519
1520 switch (state_read(&ep->com)) {
1521 case MPA_REQ_SENT:
55abf8df 1522 ep->rcv_seq += dlen;
cfdda9d7
SW		 1523 process_mpa_reply(ep, skb);
1524 break;
1525 case MPA_REQ_WAIT:
55abf8df 1526 ep->rcv_seq += dlen;
cfdda9d7
SW		 1527 process_mpa_request(ep, skb);
1528 break;
1557967b
VP		 1529 case FPDU_MODE: {
1530 struct c4iw_qp_attributes attrs;
1531 BUG_ON(!ep->com.qp);
e8e5b927 1532 if (status)
1557967b 1533 pr_err("%s Unexpected streaming data." \
04236df2
VP		 1534 " qpid %u ep %p state %d tid %u status %d\n",
1535 __func__, ep->com.qp->wq.sq.qid, ep,
1536 state_read(&ep->com), ep->hwtid, status);
97d7ec0c 1537 attrs.next_state = C4IW_QP_STATE_TERMINATE;
1557967b 1538 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
97d7ec0c 1539 C4IW_QP_ATTR_NEXT_STATE, &attrs, 0);
cfdda9d7
SW		 1540 break;
1541 }
1557967b
VP		 1542 default:
1543 break;
1544 }
cfdda9d7
SW		 1545 return 0;
1546}
1547
1548static int abort_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
1549{
1550 struct c4iw_ep *ep;
1551 struct cpl_abort_rpl_rss *rpl = cplhdr(skb);
cfdda9d7
SW		 1552 int release = 0;
1553 unsigned int tid = GET_TID(rpl);
1554 struct tid_info *t = dev->rdev.lldi.tids;
1555
1556 ep = lookup_tid(t, tid);
4984037b
VP		 1557 if (!ep) {
1558 printk(KERN_WARNING MOD "Abort rpl to freed endpoint\n");
1559 return 0;
1560 }
92dd6c3d 1561 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
2f5b48c3 1562 mutex_lock(&ep->com.mutex);
cfdda9d7
SW		 1563 switch (ep->com.state) {
1564 case ABORTING:
91e9c071 1565 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
cfdda9d7
SW		 1566 __state_set(&ep->com, DEAD);
1567 release = 1;
1568 break;
1569 default:
1570 printk(KERN_ERR "%s ep %p state %d\n",
1571 __func__, ep, ep->com.state);
1572 break;
1573 }
2f5b48c3 1574 mutex_unlock(&ep->com.mutex);
cfdda9d7
SW		 1575
1576 if (release)
1577 release_ep_resources(ep);
1578 return 0;
1579}
1580
5be78ee9
VP		 1581static void send_fw_act_open_req(struct c4iw_ep *ep, unsigned int atid)
1582{
1583 struct sk_buff *skb;
1584 struct fw_ofld_connection_wr *req;
1585 unsigned int mtu_idx;
1586 int wscale;
830662f6 1587 struct sockaddr_in *sin;
5be78ee9
VP		 1588
1589 skb = get_skb(NULL, sizeof(*req), GFP_KERNEL);
1590 req = (struct fw_ofld_connection_wr *)__skb_put(skb, sizeof(*req));
1591 memset(req, 0, sizeof(*req));
1592 req->op_compl = htonl(V_WR_OP(FW_OFLD_CONNECTION_WR));
1593 req->len16_pkd = htonl(FW_WR_LEN16(DIV_ROUND_UP(sizeof(*req), 16)));
41b4f86c
KS		 1594 req->le.filter = cpu_to_be32(cxgb4_select_ntuple(
1595 ep->com.dev->rdev.lldi.ports[0],
5be78ee9 1596 ep->l2t));
830662f6
VP		 1597 sin = (struct sockaddr_in *)&ep->com.local_addr;
1598 req->le.lport = sin->sin_port;
1599 req->le.u.ipv4.lip = sin->sin_addr.s_addr;
1600 sin = (struct sockaddr_in *)&ep->com.remote_addr;
1601 req->le.pport = sin->sin_port;
1602 req->le.u.ipv4.pip = sin->sin_addr.s_addr;
5be78ee9
VP		 1603 req->tcb.t_state_to_astid =
1604 htonl(V_FW_OFLD_CONNECTION_WR_T_STATE(TCP_SYN_SENT) |
1605 V_FW_OFLD_CONNECTION_WR_ASTID(atid));
1606 req->tcb.cplrxdataack_cplpassacceptrpl =
1607 htons(F_FW_OFLD_CONNECTION_WR_CPLRXDATAACK);
ef5d6355 1608 req->tcb.tx_max = (__force __be32) jiffies;
793dad94 1609 req->tcb.rcv_adv = htons(1);
5be78ee9
VP		 1610 cxgb4_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx);
1611 wscale = compute_wscale(rcv_win);
ef5d6355 1612 req->tcb.opt0 = (__force __be64) (TCAM_BYPASS(1) |
5be78ee9
VP		 1613 (nocong ? NO_CONG(1) : 0) |
1614 KEEP_ALIVE(1) |
1615 DELACK(1) |
1616 WND_SCALE(wscale) |
1617 MSS_IDX(mtu_idx) |
1618 L2T_IDX(ep->l2t->idx) |
1619 TX_CHAN(ep->tx_chan) |
1620 SMAC_SEL(ep->smac_idx) |
1621 DSCP(ep->tos) |
1622 ULP_MODE(ULP_MODE_TCPDDP) |
ef5d6355
VP		 1623 RCV_BUFSIZ(rcv_win >> 10));
1624 req->tcb.opt2 = (__force __be32) (PACE(1) |
5be78ee9
VP		 1625 TX_QUEUE(ep->com.dev->rdev.lldi.tx_modq[ep->tx_chan]) |
1626 RX_CHANNEL(0) |
1627 CCTRL_ECN(enable_ecn) |
ef5d6355 1628 RSS_QUEUE_VALID | RSS_QUEUE(ep->rss_qid));
5be78ee9 1629 if (enable_tcp_timestamps)
ef5d6355 1630 req->tcb.opt2 |= (__force __be32) TSTAMPS_EN(1);
5be78ee9 1631 if (enable_tcp_sack)
ef5d6355 1632 req->tcb.opt2 |= (__force __be32) SACK_EN(1);
5be78ee9 1633 if (wscale && enable_tcp_window_scaling)
ef5d6355
VP		 1634 req->tcb.opt2 |= (__force __be32) WND_SCALE_EN(1);
1635 req->tcb.opt0 = cpu_to_be64((__force u64) req->tcb.opt0);
1636 req->tcb.opt2 = cpu_to_be32((__force u32) req->tcb.opt2);
793dad94
VP		 1637 set_wr_txq(skb, CPL_PRIORITY_CONTROL, ep->ctrlq_idx);
1638 set_bit(ACT_OFLD_CONN, &ep->com.history);
5be78ee9
VP		 1639 c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
1640}
1641
cfdda9d7
SW		 1642/*
1643 * Return whether a failed active open has allocated a TID
1644 */
1645static inline int act_open_has_tid(int status)
1646{
1647 return status != CPL_ERR_TCAM_FULL && status != CPL_ERR_CONN_EXIST &&
1648 status != CPL_ERR_ARP_MISS;
1649}
1650
793dad94
VP		 1651#define ACT_OPEN_RETRY_COUNT 2
1652
830662f6
VP		 1653static int import_ep(struct c4iw_ep *ep, int iptype, __u8 *peer_ip,
1654 struct dst_entry *dst, struct c4iw_dev *cdev,
1655 bool clear_mpa_v1)
1656{
1657 struct neighbour *n;
1658 int err, step;
1659 struct net_device *pdev;
1660
1661 n = dst_neigh_lookup(dst, peer_ip);
1662 if (!n)
1663 return -ENODEV;
1664
1665 rcu_read_lock();
1666 err = -ENOMEM;
1667 if (n->dev->flags & IFF_LOOPBACK) {
1668 if (iptype == 4)
1669 pdev = ip_dev_find(&init_net, *(__be32 *)peer_ip);
1670 else if (IS_ENABLED(CONFIG_IPV6))
1671 for_each_netdev(&init_net, pdev) {
1672 if (ipv6_chk_addr(&init_net,
1673 (struct in6_addr *)peer_ip,
1674 pdev, 1))
1675 break;
1676 }
1677 else
1678 pdev = NULL;
1679
1680 if (!pdev) {
1681 err = -ENODEV;
1682 goto out;
1683 }
1684 ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t,
1685 n, pdev, 0);
1686 if (!ep->l2t)
1687 goto out;
1688 ep->mtu = pdev->mtu;
1689 ep->tx_chan = cxgb4_port_chan(pdev);
1690 ep->smac_idx = (cxgb4_port_viid(pdev) & 0x7F) << 1;
1691 step = cdev->rdev.lldi.ntxq /
1692 cdev->rdev.lldi.nchan;
1693 ep->txq_idx = cxgb4_port_idx(pdev) * step;
1694 step = cdev->rdev.lldi.nrxq /
1695 cdev->rdev.lldi.nchan;
1696 ep->ctrlq_idx = cxgb4_port_idx(pdev);
1697 ep->rss_qid = cdev->rdev.lldi.rxq_ids[
1698 cxgb4_port_idx(pdev) * step];
1699 dev_put(pdev);
1700 } else {
1701 pdev = get_real_dev(n->dev);
1702 ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t,
1703 n, pdev, 0);
1704 if (!ep->l2t)
1705 goto out;
1706 ep->mtu = dst_mtu(dst);
1707 ep->tx_chan = cxgb4_port_chan(n->dev);
1708 ep->smac_idx = (cxgb4_port_viid(n->dev) & 0x7F) << 1;
1709 step = cdev->rdev.lldi.ntxq /
1710 cdev->rdev.lldi.nchan;
1711 ep->txq_idx = cxgb4_port_idx(n->dev) * step;
1712 ep->ctrlq_idx = cxgb4_port_idx(n->dev);
1713 step = cdev->rdev.lldi.nrxq /
1714 cdev->rdev.lldi.nchan;
1715 ep->rss_qid = cdev->rdev.lldi.rxq_ids[
1716 cxgb4_port_idx(n->dev) * step];
1717
1718 if (clear_mpa_v1) {
1719 ep->retry_with_mpa_v1 = 0;
1720 ep->tried_with_mpa_v1 = 0;
1721 }
1722 }
1723 err = 0;
1724out:
1725 rcu_read_unlock();
1726
1727 neigh_release(n);
1728
1729 return err;
1730}
1731
793dad94
VP		 1732static int c4iw_reconnect(struct c4iw_ep *ep)
1733{
1734 int err = 0;
24d44a39
SW		 1735 struct sockaddr_in *laddr = (struct sockaddr_in *)
1736 &ep->com.cm_id->local_addr;
1737 struct sockaddr_in *raddr = (struct sockaddr_in *)
1738 &ep->com.cm_id->remote_addr;
830662f6
VP		 1739 struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *)
1740 &ep->com.cm_id->local_addr;
1741 struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)
1742 &ep->com.cm_id->remote_addr;
1743 int iptype;
1744 __u8 *ra;
793dad94
VP		 1745
1746 PDBG("%s qp %p cm_id %p\n", __func__, ep->com.qp, ep->com.cm_id);
1747 init_timer(&ep->timer);
1748
1749 /*
1750 * Allocate an active TID to initiate a TCP connection.
1751 */
1752 ep->atid = cxgb4_alloc_atid(ep->com.dev->rdev.lldi.tids, ep);
1753 if (ep->atid == -1) {
1754 pr_err("%s - cannot alloc atid.\n", __func__);
1755 err = -ENOMEM;
1756 goto fail2;
1757 }
1758 insert_handle(ep->com.dev, &ep->com.dev->atid_idr, ep, ep->atid);
1759
1760 /* find a route */
830662f6
VP		 1761 if (ep->com.cm_id->local_addr.ss_family == AF_INET) {
1762 ep->dst = find_route(ep->com.dev, laddr->sin_addr.s_addr,
1763 raddr->sin_addr.s_addr, laddr->sin_port,
1764 raddr->sin_port, 0);
1765 iptype = 4;
1766 ra = (__u8 *)&raddr->sin_addr;
1767 } else {
1768 ep->dst = find_route6(ep->com.dev, laddr6->sin6_addr.s6_addr,
1769 raddr6->sin6_addr.s6_addr,
1770 laddr6->sin6_port, raddr6->sin6_port, 0,
1771 raddr6->sin6_scope_id);
1772 iptype = 6;
1773 ra = (__u8 *)&raddr6->sin6_addr;
1774 }
1775 if (!ep->dst) {
793dad94
VP		 1776 pr_err("%s - cannot find route.\n", __func__);
1777 err = -EHOSTUNREACH;
1778 goto fail3;
1779 }
830662f6
VP		 1780 err = import_ep(ep, iptype, ra, ep->dst, ep->com.dev, false);
1781 if (err) {
793dad94 1782 pr_err("%s - cannot alloc l2e.\n", __func__);
793dad94
VP		 1783 goto fail4;
1784 }
1785
1786 PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n",
1787 __func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid,
1788 ep->l2t->idx);
1789
1790 state_set(&ep->com, CONNECTING);
1791 ep->tos = 0;
1792
1793 /* send connect request to rnic */
1794 err = send_connect(ep);
1795 if (!err)
1796 goto out;
1797
1798 cxgb4_l2t_release(ep->l2t);
1799fail4:
1800 dst_release(ep->dst);
1801fail3:
1802 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid);
1803 cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid);
1804fail2:
1805 /*
1806 * remember to send notification to upper layer.
1807 * We are in here so the upper layer is not aware that this is
1808 * re-connect attempt and so, upper layer is still waiting for
1809 * response of 1st connect request.
1810 */
1811 connect_reply_upcall(ep, -ECONNRESET);
1812 c4iw_put_ep(&ep->com);
1813out:
1814 return err;
1815}
1816
cfdda9d7
SW		 1817static int act_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
1818{
1819 struct c4iw_ep *ep;
1820 struct cpl_act_open_rpl *rpl = cplhdr(skb);
1821 unsigned int atid = GET_TID_TID(GET_AOPEN_ATID(
1822 ntohl(rpl->atid_status)));
1823 struct tid_info *t = dev->rdev.lldi.tids;
1824 int status = GET_AOPEN_STATUS(ntohl(rpl->atid_status));
830662f6
VP		 1825 struct sockaddr_in *la;
1826 struct sockaddr_in *ra;
1827 struct sockaddr_in6 *la6;
1828 struct sockaddr_in6 *ra6;
cfdda9d7
SW		 1829
1830 ep = lookup_atid(t, atid);
830662f6
VP		 1831 la = (struct sockaddr_in *)&ep->com.local_addr;
1832 ra = (struct sockaddr_in *)&ep->com.remote_addr;
1833 la6 = (struct sockaddr_in6 *)&ep->com.local_addr;
1834 ra6 = (struct sockaddr_in6 *)&ep->com.remote_addr;
cfdda9d7
SW		 1835
1836 PDBG("%s ep %p atid %u status %u errno %d\n", __func__, ep, atid,
1837 status, status2errno(status));
1838
1839 if (status == CPL_ERR_RTX_NEG_ADVICE) {
1840 printk(KERN_WARNING MOD "Connection problems for atid %u\n",
1841 atid);
1842 return 0;
1843 }
1844
793dad94
VP		 1845 set_bit(ACT_OPEN_RPL, &ep->com.history);
1846
d716a2a0
VP		 1847 /*
1848 * Log interesting failures.
1849 */
1850 switch (status) {
1851 case CPL_ERR_CONN_RESET:
1852 case CPL_ERR_CONN_TIMEDOUT:
1853 break;
5be78ee9 1854 case CPL_ERR_TCAM_FULL:
830662f6 1855 mutex_lock(&dev->rdev.stats.lock);
3b174d94 1856 dev->rdev.stats.tcam_full++;
830662f6
VP		 1857 mutex_unlock(&dev->rdev.stats.lock);
1858 if (ep->com.local_addr.ss_family == AF_INET &&
1859 dev->rdev.lldi.enable_fw_ofld_conn) {
793dad94
VP		 1860 send_fw_act_open_req(ep,
1861 GET_TID_TID(GET_AOPEN_ATID(
1862 ntohl(rpl->atid_status))));
1863 return 0;
1864 }
1865 break;
1866 case CPL_ERR_CONN_EXIST:
1867 if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) {
1868 set_bit(ACT_RETRY_INUSE, &ep->com.history);
1869 remove_handle(ep->com.dev, &ep->com.dev->atid_idr,
1870 atid);
1871 cxgb4_free_atid(t, atid);
1872 dst_release(ep->dst);
1873 cxgb4_l2t_release(ep->l2t);
1874 c4iw_reconnect(ep);
1875 return 0;
1876 }
5be78ee9 1877 break;
d716a2a0 1878 default:
830662f6
VP		 1879 if (ep->com.local_addr.ss_family == AF_INET) {
1880 pr_info("Active open failure - atid %u status %u errno %d %pI4:%u->%pI4:%u\n",
1881 atid, status, status2errno(status),
1882 &la->sin_addr.s_addr, ntohs(la->sin_port),
1883 &ra->sin_addr.s_addr, ntohs(ra->sin_port));
1884 } else {
1885 pr_info("Active open failure - atid %u status %u errno %d %pI6:%u->%pI6:%u\n",
1886 atid, status, status2errno(status),
1887 la6->sin6_addr.s6_addr, ntohs(la6->sin6_port),
1888 ra6->sin6_addr.s6_addr, ntohs(ra6->sin6_port));
1889 }
d716a2a0
VP		 1890 break;
1891 }
1892
cfdda9d7
SW		 1893 connect_reply_upcall(ep, status2errno(status));
1894 state_set(&ep->com, DEAD);
1895
1896 if (status && act_open_has_tid(status))
1897 cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, GET_TID(rpl));
1898
793dad94 1899 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, atid);
cfdda9d7
SW		 1900 cxgb4_free_atid(t, atid);
1901 dst_release(ep->dst);
1902 cxgb4_l2t_release(ep->l2t);
1903 c4iw_put_ep(&ep->com);
1904
1905 return 0;
1906}
1907
1908static int pass_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
1909{
1910 struct cpl_pass_open_rpl *rpl = cplhdr(skb);
1911 struct tid_info *t = dev->rdev.lldi.tids;
1912 unsigned int stid = GET_TID(rpl);
1913 struct c4iw_listen_ep *ep = lookup_stid(t, stid);
1914
1915 if (!ep) {
1cab775c
VP		 1916 PDBG("%s stid %d lookup failure!\n", __func__, stid);
1917 goto out;
cfdda9d7
SW		 1918 }
1919 PDBG("%s ep %p status %d error %d\n", __func__, ep,
1920 rpl->status, status2errno(rpl->status));
d9594d99 1921 c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status));
cfdda9d7 1922
1cab775c 1923out:
cfdda9d7
SW		 1924 return 0;
1925}
1926
cfdda9d7
SW		 1927static int close_listsrv_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
1928{
1929 struct cpl_close_listsvr_rpl *rpl = cplhdr(skb);
1930 struct tid_info *t = dev->rdev.lldi.tids;
1931 unsigned int stid = GET_TID(rpl);
1932 struct c4iw_listen_ep *ep = lookup_stid(t, stid);
1933
1934 PDBG("%s ep %p\n", __func__, ep);
d9594d99 1935 c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status));
cfdda9d7
SW		 1936 return 0;
1937}
1938
830662f6 1939static void accept_cr(struct c4iw_ep *ep, struct sk_buff *skb,
cfdda9d7
SW		 1940 struct cpl_pass_accept_req *req)
1941{
1942 struct cpl_pass_accept_rpl *rpl;
1943 unsigned int mtu_idx;
1944 u64 opt0;
1945 u32 opt2;
1946 int wscale;
1947
1948 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1949 BUG_ON(skb_cloned(skb));
1950 skb_trim(skb, sizeof(*rpl));
1951 skb_get(skb);
1952 cxgb4_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx);
1953 wscale = compute_wscale(rcv_win);
5be78ee9
VP		 1954 opt0 = (nocong ? NO_CONG(1) : 0) |
1955 KEEP_ALIVE(1) |
ba6d3925 1956 DELACK(1) |
cfdda9d7
SW		 1957 WND_SCALE(wscale) |
1958 MSS_IDX(mtu_idx) |
1959 L2T_IDX(ep->l2t->idx) |
1960 TX_CHAN(ep->tx_chan) |
1961 SMAC_SEL(ep->smac_idx) |
5be78ee9 1962 DSCP(ep->tos >> 2) |
b48f3b9c 1963 ULP_MODE(ULP_MODE_TCPDDP) |
cfdda9d7
SW		 1964 RCV_BUFSIZ(rcv_win>>10);
1965 opt2 = RX_CHANNEL(0) |
1966 RSS_QUEUE_VALID | RSS_QUEUE(ep->rss_qid);
1967
1968 if (enable_tcp_timestamps && req->tcpopt.tstamp)
1969 opt2 |= TSTAMPS_EN(1);
1970 if (enable_tcp_sack && req->tcpopt.sack)
1971 opt2 |= SACK_EN(1);
1972 if (wscale && enable_tcp_window_scaling)
1973 opt2 |= WND_SCALE_EN(1);
5be78ee9
VP		 1974 if (enable_ecn) {
1975 const struct tcphdr *tcph;
1976 u32 hlen = ntohl(req->hdr_len);
1977
1978 tcph = (const void *)(req + 1) + G_ETH_HDR_LEN(hlen) +
1979 G_IP_HDR_LEN(hlen);
1980 if (tcph->ece && tcph->cwr)
1981 opt2 |= CCTRL_ECN(1);
1982 }
cfdda9d7
SW		 1983
1984 rpl = cplhdr(skb);
1985 INIT_TP_WR(rpl, ep->hwtid);
1986 OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL,
1987 ep->hwtid));
1988 rpl->opt0 = cpu_to_be64(opt0);
1989 rpl->opt2 = cpu_to_be32(opt2);
d4f1a5c6 1990 set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx);
b38a0ad8 1991 t4_set_arp_err_handler(skb, NULL, arp_failure_discard);
cfdda9d7
SW		 1992 c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
1993
1994 return;
1995}
1996
830662f6 1997static void reject_cr(struct c4iw_dev *dev, u32 hwtid, struct sk_buff *skb)
cfdda9d7 1998{
830662f6 1999 PDBG("%s c4iw_dev %p tid %u\n", __func__, dev, hwtid);
cfdda9d7
SW		 2000 BUG_ON(skb_cloned(skb));
2001 skb_trim(skb, sizeof(struct cpl_tid_release));
2002 skb_get(skb);
2003 release_tid(&dev->rdev, hwtid, skb);
2004 return;
2005}
2006
830662f6
VP		 2007static void get_4tuple(struct cpl_pass_accept_req *req, int *iptype,
2008 __u8 *local_ip, __u8 *peer_ip,
cfdda9d7
SW		 2009 __be16 *local_port, __be16 *peer_port)
2010{
2011 int eth_len = G_ETH_HDR_LEN(be32_to_cpu(req->hdr_len));
2012 int ip_len = G_IP_HDR_LEN(be32_to_cpu(req->hdr_len));
2013 struct iphdr *ip = (struct iphdr *)((u8 *)(req + 1) + eth_len);
830662f6 2014 struct ipv6hdr *ip6 = (struct ipv6hdr *)((u8 *)(req + 1) + eth_len);
cfdda9d7
SW		 2015 struct tcphdr *tcp = (struct tcphdr *)
2016 ((u8 *)(req + 1) + eth_len + ip_len);
2017
830662f6
VP		 2018 if (ip->version == 4) {
2019 PDBG("%s saddr 0x%x daddr 0x%x sport %u dport %u\n", __func__,
2020 ntohl(ip->saddr), ntohl(ip->daddr), ntohs(tcp->source),
2021 ntohs(tcp->dest));
2022 *iptype = 4;
2023 memcpy(peer_ip, &ip->saddr, 4);
2024 memcpy(local_ip, &ip->daddr, 4);
2025 } else {
2026 PDBG("%s saddr %pI6 daddr %pI6 sport %u dport %u\n", __func__,
2027 ip6->saddr.s6_addr, ip6->daddr.s6_addr, ntohs(tcp->source),
2028 ntohs(tcp->dest));
2029 *iptype = 6;
2030 memcpy(peer_ip, ip6->saddr.s6_addr, 16);
2031 memcpy(local_ip, ip6->daddr.s6_addr, 16);
2032 }
cfdda9d7
SW		 2033 *peer_port = tcp->source;
2034 *local_port = tcp->dest;
2035
2036 return;
2037}
2038
2039static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
2040{
793dad94 2041 struct c4iw_ep *child_ep = NULL, *parent_ep;
cfdda9d7
SW		 2042 struct cpl_pass_accept_req *req = cplhdr(skb);
2043 unsigned int stid = GET_POPEN_TID(ntohl(req->tos_stid));
2044 struct tid_info *t = dev->rdev.lldi.tids;
2045 unsigned int hwtid = GET_TID(req);
2046 struct dst_entry *dst;
830662f6 2047 __u8 local_ip[16], peer_ip[16];
cfdda9d7 2048 __be16 local_port, peer_port;
3786cf18 2049 int err;
1cab775c 2050 u16 peer_mss = ntohs(req->tcpopt.mss);
830662f6 2051 int iptype;
cfdda9d7
SW		 2052
2053 parent_ep = lookup_stid(t, stid);
1cab775c
VP		 2054 if (!parent_ep) {
2055 PDBG("%s connect request on invalid stid %d\n", __func__, stid);
2056 goto reject;
2057 }
1cab775c 2058
cfdda9d7
SW		 2059 if (state_read(&parent_ep->com) != LISTEN) {
2060 printk(KERN_ERR "%s - listening ep not in LISTEN\n",
2061 __func__);
2062 goto reject;
2063 }
2064
830662f6
VP		 2065 get_4tuple(req, &iptype, local_ip, peer_ip, &local_port, &peer_port);
2066
cfdda9d7 2067 /* Find output route */
830662f6
VP		 2068 if (iptype == 4) {
2069 PDBG("%s parent ep %p hwtid %u laddr %pI4 raddr %pI4 lport %d rport %d peer_mss %d\n"
2070 , __func__, parent_ep, hwtid,
2071 local_ip, peer_ip, ntohs(local_port),
2072 ntohs(peer_port), peer_mss);
2073 dst = find_route(dev, *(__be32 *)local_ip, *(__be32 *)peer_ip,
2074 local_port, peer_port,
2075 GET_POPEN_TOS(ntohl(req->tos_stid)));
2076 } else {
2077 PDBG("%s parent ep %p hwtid %u laddr %pI6 raddr %pI6 lport %d rport %d peer_mss %d\n"
2078 , __func__, parent_ep, hwtid,
2079 local_ip, peer_ip, ntohs(local_port),
2080 ntohs(peer_port), peer_mss);
2081 dst = find_route6(dev, local_ip, peer_ip, local_port, peer_port,
2082 PASS_OPEN_TOS(ntohl(req->tos_stid)),
2083 ((struct sockaddr_in6 *)
2084 &parent_ep->com.local_addr)->sin6_scope_id);
2085 }
2086 if (!dst) {
cfdda9d7
SW		 2087 printk(KERN_ERR MOD "%s - failed to find dst entry!\n",
2088 __func__);
2089 goto reject;
2090 }
3786cf18
DM		 2091
2092 child_ep = alloc_ep(sizeof(*child_ep), GFP_KERNEL);
2093 if (!child_ep) {
2094 printk(KERN_ERR MOD "%s - failed to allocate ep entry!\n",
cfdda9d7
SW		 2095 __func__);
2096 dst_release(dst);
2097 goto reject;
2098 }
2099
830662f6 2100 err = import_ep(child_ep, iptype, peer_ip, dst, dev, false);
3786cf18
DM		 2101 if (err) {
2102 printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n",
cfdda9d7 2103 __func__);
cfdda9d7 2104 dst_release(dst);
3786cf18 2105 kfree(child_ep);
cfdda9d7
SW		 2106 goto reject;
2107 }
3786cf18 2108
1cab775c
VP		 2109 if (peer_mss && child_ep->mtu > (peer_mss + 40))
2110 child_ep->mtu = peer_mss + 40;
2111
cfdda9d7
SW		 2112 state_set(&child_ep->com, CONNECTING);
2113 child_ep->com.dev = dev;
2114 child_ep->com.cm_id = NULL;
830662f6
VP		 2115 if (iptype == 4) {
2116 struct sockaddr_in *sin = (struct sockaddr_in *)
2117 &child_ep->com.local_addr;
2118 sin->sin_family = PF_INET;
2119 sin->sin_port = local_port;
2120 sin->sin_addr.s_addr = *(__be32 *)local_ip;
2121 sin = (struct sockaddr_in *)&child_ep->com.remote_addr;
2122 sin->sin_family = PF_INET;
2123 sin->sin_port = peer_port;
2124 sin->sin_addr.s_addr = *(__be32 *)peer_ip;
2125 } else {
2126 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)
2127 &child_ep->com.local_addr;
2128 sin6->sin6_family = PF_INET6;
2129 sin6->sin6_port = local_port;
2130 memcpy(sin6->sin6_addr.s6_addr, local_ip, 16);
2131 sin6 = (struct sockaddr_in6 *)&child_ep->com.remote_addr;
2132 sin6->sin6_family = PF_INET6;
2133 sin6->sin6_port = peer_port;
2134 memcpy(sin6->sin6_addr.s6_addr, peer_ip, 16);
2135 }
cfdda9d7
SW		 2136 c4iw_get_ep(&parent_ep->com);
2137 child_ep->parent_ep = parent_ep;
2138 child_ep->tos = GET_POPEN_TOS(ntohl(req->tos_stid));
cfdda9d7
SW		 2139 child_ep->dst = dst;
2140 child_ep->hwtid = hwtid;
cfdda9d7
SW		 2141
2142 PDBG("%s tx_chan %u smac_idx %u rss_qid %u\n", __func__,
3786cf18 2143 child_ep->tx_chan, child_ep->smac_idx, child_ep->rss_qid);
cfdda9d7
SW		 2144
2145 init_timer(&child_ep->timer);
2146 cxgb4_insert_tid(t, child_ep, hwtid);
b3de6cfe 2147 insert_handle(dev, &dev->hwtid_idr, child_ep, child_ep->hwtid);
830662f6 2148 accept_cr(child_ep, skb, req);
793dad94 2149 set_bit(PASS_ACCEPT_REQ, &child_ep->com.history);
cfdda9d7
SW		 2150 goto out;
2151reject:
830662f6 2152 reject_cr(dev, hwtid, skb);
cfdda9d7
SW		 2153out:
2154 return 0;
2155}
2156
2157static int pass_establish(struct c4iw_dev *dev, struct sk_buff *skb)
2158{
2159 struct c4iw_ep *ep;
2160 struct cpl_pass_establish *req = cplhdr(skb);
2161 struct tid_info *t = dev->rdev.lldi.tids;
2162 unsigned int tid = GET_TID(req);
2163
2164 ep = lookup_tid(t, tid);
2165 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
2166 ep->snd_seq = be32_to_cpu(req->snd_isn);
2167 ep->rcv_seq = be32_to_cpu(req->rcv_isn);
2168
1cab775c
VP		 2169 PDBG("%s ep %p hwtid %u tcp_opt 0x%02x\n", __func__, ep, tid,
2170 ntohs(req->tcp_opt));
2171
cfdda9d7
SW		 2172 set_emss(ep, ntohs(req->tcp_opt));
2173
2174 dst_confirm(ep->dst);
2175 state_set(&ep->com, MPA_REQ_WAIT);
2176 start_ep_timer(ep);
2177 send_flowc(ep, skb);
793dad94 2178 set_bit(PASS_ESTAB, &ep->com.history);
cfdda9d7
SW		 2179
2180 return 0;
2181}
2182
2183static int peer_close(struct c4iw_dev *dev, struct sk_buff *skb)
2184{
2185 struct cpl_peer_close *hdr = cplhdr(skb);
2186 struct c4iw_ep *ep;
2187 struct c4iw_qp_attributes attrs;
cfdda9d7
SW		 2188 int disconnect = 1;
2189 int release = 0;
cfdda9d7
SW		 2190 struct tid_info *t = dev->rdev.lldi.tids;
2191 unsigned int tid = GET_TID(hdr);
8da7e7a5 2192 int ret;
cfdda9d7
SW		 2193
2194 ep = lookup_tid(t, tid);
2195 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
2196 dst_confirm(ep->dst);
2197
793dad94 2198 set_bit(PEER_CLOSE, &ep->com.history);
2f5b48c3 2199 mutex_lock(&ep->com.mutex);
cfdda9d7
SW		 2200 switch (ep->com.state) {
2201 case MPA_REQ_WAIT:
2202 __state_set(&ep->com, CLOSING);
2203 break;
2204 case MPA_REQ_SENT:
2205 __state_set(&ep->com, CLOSING);
2206 connect_reply_upcall(ep, -ECONNRESET);
2207 break;
2208 case MPA_REQ_RCVD:
2209
2210 /*
2211 * We're gonna mark this puppy DEAD, but keep
2212 * the reference on it until the ULP accepts or
2213 * rejects the CR. Also wake up anyone waiting
2214 * in rdma connection migration (see c4iw_accept_cr()).
2215 */
2216 __state_set(&ep->com, CLOSING);
cfdda9d7 2217 PDBG("waking up ep %p tid %u\n", ep, ep->hwtid);
d9594d99 2218 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
cfdda9d7
SW		 2219 break;
2220 case MPA_REP_SENT:
2221 __state_set(&ep->com, CLOSING);
cfdda9d7 2222 PDBG("waking up ep %p tid %u\n", ep, ep->hwtid);
d9594d99 2223 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
cfdda9d7
SW		 2224 break;
2225 case FPDU_MODE:
ca5a2202 2226 start_ep_timer(ep);
cfdda9d7 2227 __state_set(&ep->com, CLOSING);
30c95c2d 2228 attrs.next_state = C4IW_QP_STATE_CLOSING;
8da7e7a5 2229 ret = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
30c95c2d 2230 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
8da7e7a5
SW		 2231 if (ret != -ECONNRESET) {
2232 peer_close_upcall(ep);
2233 disconnect = 1;
2234 }
cfdda9d7
SW		 2235 break;
2236 case ABORTING:
2237 disconnect = 0;
2238 break;
2239 case CLOSING:
2240 __state_set(&ep->com, MORIBUND);
2241 disconnect = 0;
2242 break;
2243 case MORIBUND:
ca5a2202 2244 stop_ep_timer(ep);
cfdda9d7
SW		 2245 if (ep->com.cm_id && ep->com.qp) {
2246 attrs.next_state = C4IW_QP_STATE_IDLE;
2247 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
2248 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
2249 }
2250 close_complete_upcall(ep);
2251 __state_set(&ep->com, DEAD);
2252 release = 1;
2253 disconnect = 0;
2254 break;
2255 case DEAD:
2256 disconnect = 0;
2257 break;
2258 default:
2259 BUG_ON(1);
2260 }
2f5b48c3 2261 mutex_unlock(&ep->com.mutex);
cfdda9d7
SW		 2262 if (disconnect)
2263 c4iw_ep_disconnect(ep, 0, GFP_KERNEL);
2264 if (release)
2265 release_ep_resources(ep);
2266 return 0;
2267}
2268
2269/*
2270 * Returns whether an ABORT_REQ_RSS message is a negative advice.
2271 */
2272static int is_neg_adv_abort(unsigned int status)
2273{
2274 return status == CPL_ERR_RTX_NEG_ADVICE ||
2275 status == CPL_ERR_PERSIST_NEG_ADVICE;
2276}
2277
2278static int peer_abort(struct c4iw_dev *dev, struct sk_buff *skb)
2279{
2280 struct cpl_abort_req_rss *req = cplhdr(skb);
2281 struct c4iw_ep *ep;
2282 struct cpl_abort_rpl *rpl;
2283 struct sk_buff *rpl_skb;
2284 struct c4iw_qp_attributes attrs;
2285 int ret;
2286 int release = 0;
cfdda9d7
SW		 2287 struct tid_info *t = dev->rdev.lldi.tids;
2288 unsigned int tid = GET_TID(req);
cfdda9d7
SW		 2289
2290 ep = lookup_tid(t, tid);
2291 if (is_neg_adv_abort(req->status)) {
2292 PDBG("%s neg_adv_abort ep %p tid %u\n", __func__, ep,
2293 ep->hwtid);
2294 return 0;
2295 }
cfdda9d7
SW		 2296 PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid,
2297 ep->com.state);
793dad94 2298 set_bit(PEER_ABORT, &ep->com.history);
2f5b48c3
SW		 2299
2300 /*
2301 * Wake up any threads in rdma_init() or rdma_fini().
d2fe99e8
KS		 2302 * However, this is not needed if com state is just
2303 * MPA_REQ_SENT
2f5b48c3 2304 */
d2fe99e8
KS		 2305 if (ep->com.state != MPA_REQ_SENT)
2306 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
2f5b48c3
SW		 2307
2308 mutex_lock(&ep->com.mutex);
cfdda9d7
SW		 2309 switch (ep->com.state) {
2310 case CONNECTING:
2311 break;
2312 case MPA_REQ_WAIT:
ca5a2202 2313 stop_ep_timer(ep);
cfdda9d7
SW		 2314 break;
2315 case MPA_REQ_SENT:
ca5a2202 2316 stop_ep_timer(ep);
fe7e0a4d 2317 if (mpa_rev == 1 || (mpa_rev == 2 && ep->tried_with_mpa_v1))
d2fe99e8
KS		 2318 connect_reply_upcall(ep, -ECONNRESET);
2319 else {
2320 /*
2321 * we just don't send notification upwards because we
2322 * want to retry with mpa_v1 without upper layers even
2323 * knowing it.
2324 *
2325 * do some housekeeping so as to re-initiate the
2326 * connection
2327 */
2328 PDBG("%s: mpa_rev=%d. Retrying with mpav1\n", __func__,
2329 mpa_rev);
2330 ep->retry_with_mpa_v1 = 1;
2331 }
cfdda9d7
SW		 2332 break;
2333 case MPA_REP_SENT:
cfdda9d7
SW		 2334 break;
2335 case MPA_REQ_RCVD:
cfdda9d7
SW		 2336 break;
2337 case MORIBUND:
2338 case CLOSING:
ca5a2202 2339 stop_ep_timer(ep);
cfdda9d7
SW		 2340 /*FALLTHROUGH*/
2341 case FPDU_MODE:
2342 if (ep->com.cm_id && ep->com.qp) {
2343 attrs.next_state = C4IW_QP_STATE_ERROR;
2344 ret = c4iw_modify_qp(ep->com.qp->rhp,
2345 ep->com.qp, C4IW_QP_ATTR_NEXT_STATE,
2346 &attrs, 1);
2347 if (ret)
2348 printk(KERN_ERR MOD
2349 "%s - qp <- error failed!\n",
2350 __func__);
2351 }
2352 peer_abort_upcall(ep);
2353 break;
2354 case ABORTING:
2355 break;
2356 case DEAD:
2357 PDBG("%s PEER_ABORT IN DEAD STATE!!!!\n", __func__);
2f5b48c3 2358 mutex_unlock(&ep->com.mutex);
cfdda9d7
SW		 2359 return 0;
2360 default:
2361 BUG_ON(1);
2362 break;
2363 }
2364 dst_confirm(ep->dst);
2365 if (ep->com.state != ABORTING) {
2366 __state_set(&ep->com, DEAD);
d2fe99e8
KS		 2367 /* we don't release if we want to retry with mpa_v1 */
2368 if (!ep->retry_with_mpa_v1)
2369 release = 1;
cfdda9d7 2370 }
2f5b48c3 2371 mutex_unlock(&ep->com.mutex);
cfdda9d7
SW		 2372
2373 rpl_skb = get_skb(skb, sizeof(*rpl), GFP_KERNEL);
2374 if (!rpl_skb) {
2375 printk(KERN_ERR MOD "%s - cannot allocate skb!\n",
2376 __func__);
2377 release = 1;
2378 goto out;
2379 }
2380 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
2381 rpl = (struct cpl_abort_rpl *) skb_put(rpl_skb, sizeof(*rpl));
2382 INIT_TP_WR(rpl, ep->hwtid);
2383 OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_RPL, ep->hwtid));
2384 rpl->cmd = CPL_ABORT_NO_RST;
2385 c4iw_ofld_send(&ep->com.dev->rdev, rpl_skb);
2386out:
cfdda9d7
SW		 2387 if (release)
2388 release_ep_resources(ep);
fe7e0a4d
VP		 2389 else if (ep->retry_with_mpa_v1) {
2390 remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid);
d2fe99e8
KS		 2391 cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid);
2392 dst_release(ep->dst);
2393 cxgb4_l2t_release(ep->l2t);
2394 c4iw_reconnect(ep);
2395 }
2396
cfdda9d7
SW		 2397 return 0;
2398}
2399
2400static int close_con_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
2401{
2402 struct c4iw_ep *ep;
2403 struct c4iw_qp_attributes attrs;
2404 struct cpl_close_con_rpl *rpl = cplhdr(skb);
cfdda9d7
SW		 2405 int release = 0;
2406 struct tid_info *t = dev->rdev.lldi.tids;
2407 unsigned int tid = GET_TID(rpl);
cfdda9d7
SW		 2408
2409 ep = lookup_tid(t, tid);
2410
2411 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
2412 BUG_ON(!ep);
2413
2414 /* The cm_id may be null if we failed to connect */
2f5b48c3 2415 mutex_lock(&ep->com.mutex);
cfdda9d7
SW		 2416 switch (ep->com.state) {
2417 case CLOSING:
2418 __state_set(&ep->com, MORIBUND);
2419 break;
2420 case MORIBUND:
ca5a2202 2421 stop_ep_timer(ep);
cfdda9d7
SW		 2422 if ((ep->com.cm_id) && (ep->com.qp)) {
2423 attrs.next_state = C4IW_QP_STATE_IDLE;
2424 c4iw_modify_qp(ep->com.qp->rhp,
2425 ep->com.qp,
2426 C4IW_QP_ATTR_NEXT_STATE,
2427 &attrs, 1);
2428 }
2429 close_complete_upcall(ep);
2430 __state_set(&ep->com, DEAD);
2431 release = 1;
2432 break;
2433 case ABORTING:
2434 case DEAD:
2435 break;
2436 default:
2437 BUG_ON(1);
2438 break;
2439 }
2f5b48c3 2440 mutex_unlock(&ep->com.mutex);
cfdda9d7
SW		 2441 if (release)
2442 release_ep_resources(ep);
2443 return 0;
2444}
2445
2446static int terminate(struct c4iw_dev *dev, struct sk_buff *skb)
2447{
0e42c1f4 2448 struct cpl_rdma_terminate *rpl = cplhdr(skb);
cfdda9d7 2449 struct tid_info *t = dev->rdev.lldi.tids;
0e42c1f4
SW		 2450 unsigned int tid = GET_TID(rpl);
2451 struct c4iw_ep *ep;
2452 struct c4iw_qp_attributes attrs;
cfdda9d7
SW		 2453
2454 ep = lookup_tid(t, tid);
0e42c1f4 2455 BUG_ON(!ep);
cfdda9d7 2456
30c95c2d 2457 if (ep && ep->com.qp) {
0e42c1f4
SW		 2458 printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", tid,
2459 ep->com.qp->wq.sq.qid);
2460 attrs.next_state = C4IW_QP_STATE_TERMINATE;
2461 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
2462 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
2463 } else
30c95c2d 2464 printk(KERN_WARNING MOD "TERM received tid %u no ep/qp\n", tid);
cfdda9d7 2465
cfdda9d7
SW		 2466 return 0;
2467}
2468
2469/*
2470 * Upcall from the adapter indicating data has been transmitted.
2471 * For us its just the single MPA request or reply. We can now free
2472 * the skb holding the mpa message.
2473 */
2474static int fw4_ack(struct c4iw_dev *dev, struct sk_buff *skb)
2475{
2476 struct c4iw_ep *ep;
2477 struct cpl_fw4_ack *hdr = cplhdr(skb);
2478 u8 credits = hdr->credits;
2479 unsigned int tid = GET_TID(hdr);
2480 struct tid_info *t = dev->rdev.lldi.tids;
2481
2482
2483 ep = lookup_tid(t, tid);
2484 PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits);
2485 if (credits == 0) {
aa1ad260
JP		 2486 PDBG("%s 0 credit ack ep %p tid %u state %u\n",
2487 __func__, ep, ep->hwtid, state_read(&ep->com));
cfdda9d7
SW		 2488 return 0;
2489 }
2490
2491 dst_confirm(ep->dst);
2492 if (ep->mpa_skb) {
2493 PDBG("%s last streaming msg ack ep %p tid %u state %u "
2494 "initiator %u freeing skb\n", __func__, ep, ep->hwtid,
2495 state_read(&ep->com), ep->mpa_attr.initiator ? 1 : 0);
2496 kfree_skb(ep->mpa_skb);
2497 ep->mpa_skb = NULL;
2498 }
2499 return 0;
2500}
2501
cfdda9d7
SW		 2502int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
2503{
2504 int err;
2505 struct c4iw_ep *ep = to_ep(cm_id);
2506 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
2507
2508 if (state_read(&ep->com) == DEAD) {
2509 c4iw_put_ep(&ep->com);
2510 return -ECONNRESET;
2511 }
793dad94 2512 set_bit(ULP_REJECT, &ep->com.history);
cfdda9d7
SW		 2513 BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD);
2514 if (mpa_rev == 0)
2515 abort_connection(ep, NULL, GFP_KERNEL);
2516 else {
2517 err = send_mpa_reject(ep, pdata, pdata_len);
2518 err = c4iw_ep_disconnect(ep, 0, GFP_KERNEL);
2519 }
2520 c4iw_put_ep(&ep->com);
2521 return 0;
2522}
2523
2524int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
2525{
2526 int err;
2527 struct c4iw_qp_attributes attrs;
2528 enum c4iw_qp_attr_mask mask;
2529 struct c4iw_ep *ep = to_ep(cm_id);
2530 struct c4iw_dev *h = to_c4iw_dev(cm_id->device);
2531 struct c4iw_qp *qp = get_qhp(h, conn_param->qpn);
2532
2533 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
2534 if (state_read(&ep->com) == DEAD) {
2535 err = -ECONNRESET;
2536 goto err;
2537 }
2538
2539 BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD);
2540 BUG_ON(!qp);
2541
793dad94 2542 set_bit(ULP_ACCEPT, &ep->com.history);
be4c9bad
RD		 2543 if ((conn_param->ord > c4iw_max_read_depth) ||
2544 (conn_param->ird > c4iw_max_read_depth)) {
cfdda9d7
SW		 2545 abort_connection(ep, NULL, GFP_KERNEL);
2546 err = -EINVAL;
2547 goto err;
2548 }
2549
d2fe99e8
KS		 2550 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
2551 if (conn_param->ord > ep->ird) {
2552 ep->ird = conn_param->ird;
2553 ep->ord = conn_param->ord;
2554 send_mpa_reject(ep, conn_param->private_data,
2555 conn_param->private_data_len);
2556 abort_connection(ep, NULL, GFP_KERNEL);
2557 err = -ENOMEM;
2558 goto err;
2559 }
2560 if (conn_param->ird > ep->ord) {
2561 if (!ep->ord)
2562 conn_param->ird = 1;
2563 else {
2564 abort_connection(ep, NULL, GFP_KERNEL);
2565 err = -ENOMEM;
2566 goto err;
2567 }
2568 }
cfdda9d7 2569
d2fe99e8 2570 }
cfdda9d7
SW		 2571 ep->ird = conn_param->ird;
2572 ep->ord = conn_param->ord;
2573
d2fe99e8
KS		 2574 if (ep->mpa_attr.version != 2)
2575 if (peer2peer && ep->ird == 0)
2576 ep->ird = 1;
cfdda9d7
SW		 2577
2578 PDBG("%s %d ird %d ord %d\n", __func__, __LINE__, ep->ird, ep->ord);
2579
d2fe99e8
KS		 2580 cm_id->add_ref(cm_id);
2581 ep->com.cm_id = cm_id;
2582 ep->com.qp = qp;
325abead 2583 ref_qp(ep);
d2fe99e8 2584
cfdda9d7
SW		 2585 /* bind QP to EP and move to RTS */
2586 attrs.mpa_attr = ep->mpa_attr;
2587 attrs.max_ird = ep->ird;
2588 attrs.max_ord = ep->ord;
2589 attrs.llp_stream_handle = ep;
2590 attrs.next_state = C4IW_QP_STATE_RTS;
2591
2592 /* bind QP and TID with INIT_WR */
2593 mask = C4IW_QP_ATTR_NEXT_STATE |
2594 C4IW_QP_ATTR_LLP_STREAM_HANDLE |
2595 C4IW_QP_ATTR_MPA_ATTR |
2596 C4IW_QP_ATTR_MAX_IRD |
2597 C4IW_QP_ATTR_MAX_ORD;
2598
2599 err = c4iw_modify_qp(ep->com.qp->rhp,
2600 ep->com.qp, mask, &attrs, 1);
2601 if (err)
2602 goto err1;
2603 err = send_mpa_reply(ep, conn_param->private_data,
2604 conn_param->private_data_len);
2605 if (err)
2606 goto err1;
2607
2608 state_set(&ep->com, FPDU_MODE);
2609 established_upcall(ep);
2610 c4iw_put_ep(&ep->com);
2611 return 0;
2612err1:
2613 ep->com.cm_id = NULL;
cfdda9d7
SW		 2614 cm_id->rem_ref(cm_id);
2615err:
2616 c4iw_put_ep(&ep->com);
2617 return err;
2618}
2619
830662f6
VP		 2620static int pick_local_ipaddrs(struct c4iw_dev *dev, struct iw_cm_id *cm_id)
2621{
2622 struct in_device *ind;
2623 int found = 0;
2624 struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr;
2625 struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr;
2626
2627 ind = in_dev_get(dev->rdev.lldi.ports[0]);
2628 if (!ind)
2629 return -EADDRNOTAVAIL;
2630 for_primary_ifa(ind) {
2631 laddr->sin_addr.s_addr = ifa->ifa_address;
2632 raddr->sin_addr.s_addr = ifa->ifa_address;
2633 found = 1;
2634 break;
2635 }
2636 endfor_ifa(ind);
2637 in_dev_put(ind);
2638 return found ? 0 : -EADDRNOTAVAIL;
2639}
2640
2641static int get_lladdr(struct net_device *dev, struct in6_addr *addr,
2642 unsigned char banned_flags)
2643{
2644 struct inet6_dev *idev;
2645 int err = -EADDRNOTAVAIL;
2646
2647 rcu_read_lock();
2648 idev = __in6_dev_get(dev);
2649 if (idev != NULL) {
2650 struct inet6_ifaddr *ifp;
2651
2652 read_lock_bh(&idev->lock);
2653 list_for_each_entry(ifp, &idev->addr_list, if_list) {
2654 if (ifp->scope == IFA_LINK &&
2655 !(ifp->flags & banned_flags)) {
2656 memcpy(addr, &ifp->addr, 16);
2657 err = 0;
2658 break;
2659 }
2660 }
2661 read_unlock_bh(&idev->lock);
2662 }
2663 rcu_read_unlock();
2664 return err;
2665}
2666
2667static int pick_local_ip6addrs(struct c4iw_dev *dev, struct iw_cm_id *cm_id)
2668{
2669 struct in6_addr uninitialized_var(addr);
2670 struct sockaddr_in6 *la6 = (struct sockaddr_in6 *)&cm_id->local_addr;
2671 struct sockaddr_in6 *ra6 = (struct sockaddr_in6 *)&cm_id->remote_addr;
2672
2673 if (get_lladdr(dev->rdev.lldi.ports[0], &addr, IFA_F_TENTATIVE)) {
2674 memcpy(la6->sin6_addr.s6_addr, &addr, 16);
2675 memcpy(ra6->sin6_addr.s6_addr, &addr, 16);
2676 return 0;
2677 }
2678 return -EADDRNOTAVAIL;
2679}
2680
cfdda9d7
SW		 2681int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
2682{
cfdda9d7
SW		 2683 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device);
2684 struct c4iw_ep *ep;
3786cf18 2685 int err = 0;
24d44a39
SW		 2686 struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr;
2687 struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr;
830662f6
VP		 2688 struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *)&cm_id->local_addr;
2689 struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)
2690 &cm_id->remote_addr;
2691 __u8 *ra;
2692 int iptype;
cfdda9d7 2693
be4c9bad
RD		 2694 if ((conn_param->ord > c4iw_max_read_depth) ||
2695 (conn_param->ird > c4iw_max_read_depth)) {
2696 err = -EINVAL;
2697 goto out;
2698 }
cfdda9d7
SW		 2699 ep = alloc_ep(sizeof(*ep), GFP_KERNEL);
2700 if (!ep) {
2701 printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__);
2702 err = -ENOMEM;
2703 goto out;
2704 }
2705 init_timer(&ep->timer);
2706 ep->plen = conn_param->private_data_len;
2707 if (ep->plen)
2708 memcpy(ep->mpa_pkt + sizeof(struct mpa_message),
2709 conn_param->private_data, ep->plen);
2710 ep->ird = conn_param->ird;
2711 ep->ord = conn_param->ord;
2712
2713 if (peer2peer && ep->ord == 0)
2714 ep->ord = 1;
2715
2716 cm_id->add_ref(cm_id);
2717 ep->com.dev = dev;
2718 ep->com.cm_id = cm_id;
2719 ep->com.qp = get_qhp(dev, conn_param->qpn);
830662f6
VP		 2720 if (!ep->com.qp) {
2721 PDBG("%s qpn 0x%x not found!\n", __func__, conn_param->qpn);
2722 err = -EINVAL;
2723 goto fail2;
2724 }
325abead 2725 ref_qp(ep);
cfdda9d7
SW		 2726 PDBG("%s qpn 0x%x qp %p cm_id %p\n", __func__, conn_param->qpn,
2727 ep->com.qp, cm_id);
2728
2729 /*
2730 * Allocate an active TID to initiate a TCP connection.
2731 */
2732 ep->atid = cxgb4_alloc_atid(dev->rdev.lldi.tids, ep);
2733 if (ep->atid == -1) {
2734 printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __func__);
2735 err = -ENOMEM;
2736 goto fail2;
2737 }
793dad94 2738 insert_handle(dev, &dev->atid_idr, ep, ep->atid);
cfdda9d7 2739
830662f6
VP		 2740 if (cm_id->remote_addr.ss_family == AF_INET) {
2741 iptype = 4;
2742 ra = (__u8 *)&raddr->sin_addr;
cfdda9d7 2743
830662f6
VP		 2744 /*
2745 * Handle loopback requests to INADDR_ANY.
2746 */
2747 if ((__force int)raddr->sin_addr.s_addr == INADDR_ANY) {
2748 err = pick_local_ipaddrs(dev, cm_id);
2749 if (err)
2750 goto fail2;
2751 }
2752
2753 /* find a route */
2754 PDBG("%s saddr %pI4 sport 0x%x raddr %pI4 rport 0x%x\n",
2755 __func__, &laddr->sin_addr, ntohs(laddr->sin_port),
2756 ra, ntohs(raddr->sin_port));
2757 ep->dst = find_route(dev, laddr->sin_addr.s_addr,
2758 raddr->sin_addr.s_addr, laddr->sin_port,
2759 raddr->sin_port, 0);
2760 } else {
2761 iptype = 6;
2762 ra = (__u8 *)&raddr6->sin6_addr;
2763
2764 /*
2765 * Handle loopback requests to INADDR_ANY.
2766 */
2767 if (ipv6_addr_type(&raddr6->sin6_addr) == IPV6_ADDR_ANY) {
2768 err = pick_local_ip6addrs(dev, cm_id);
2769 if (err)
2770 goto fail2;
2771 }
2772
2773 /* find a route */
2774 PDBG("%s saddr %pI6 sport 0x%x raddr %pI6 rport 0x%x\n",
2775 __func__, laddr6->sin6_addr.s6_addr,
2776 ntohs(laddr6->sin6_port),
2777 raddr6->sin6_addr.s6_addr, ntohs(raddr6->sin6_port));
2778 ep->dst = find_route6(dev, laddr6->sin6_addr.s6_addr,
2779 raddr6->sin6_addr.s6_addr,
2780 laddr6->sin6_port, raddr6->sin6_port, 0,
2781 raddr6->sin6_scope_id);
2782 }
2783 if (!ep->dst) {
cfdda9d7
SW		 2784 printk(KERN_ERR MOD "%s - cannot find route.\n", __func__);
2785 err = -EHOSTUNREACH;
2786 goto fail3;
2787 }
cfdda9d7 2788
830662f6 2789 err = import_ep(ep, iptype, ra, ep->dst, ep->com.dev, true);
3786cf18 2790 if (err) {
cfdda9d7 2791 printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__);
cfdda9d7
SW		 2792 goto fail4;
2793 }
2794
2795 PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n",
2796 __func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid,
2797 ep->l2t->idx);
2798
2799 state_set(&ep->com, CONNECTING);
2800 ep->tos = 0;
24d44a39
SW		 2801 memcpy(&ep->com.local_addr, &cm_id->local_addr,
2802 sizeof(ep->com.local_addr));
2803 memcpy(&ep->com.remote_addr, &cm_id->remote_addr,
2804 sizeof(ep->com.remote_addr));
cfdda9d7
SW		 2805
2806 /* send connect request to rnic */
2807 err = send_connect(ep);
2808 if (!err)
2809 goto out;
2810
2811 cxgb4_l2t_release(ep->l2t);
2812fail4:
2813 dst_release(ep->dst);
2814fail3:
793dad94 2815 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid);
cfdda9d7
SW		 2816 cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid);
2817fail2:
2818 cm_id->rem_ref(cm_id);
2819 c4iw_put_ep(&ep->com);
2820out:
2821 return err;
2822}
2823
830662f6
VP		 2824static int create_server6(struct c4iw_dev *dev, struct c4iw_listen_ep *ep)
2825{
2826 int err;
2827 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&ep->com.local_addr;
2828
2829 c4iw_init_wr_wait(&ep->com.wr_wait);
2830 err = cxgb4_create_server6(ep->com.dev->rdev.lldi.ports[0],
2831 ep->stid, &sin6->sin6_addr,
2832 sin6->sin6_port,
2833 ep->com.dev->rdev.lldi.rxq_ids[0]);
2834 if (!err)
2835 err = c4iw_wait_for_reply(&ep->com.dev->rdev,
2836 &ep->com.wr_wait,
2837 0, 0, __func__);
2838 if (err)
2839 pr_err("cxgb4_create_server6/filter failed err %d stid %d laddr %pI6 lport %d\n",
2840 err, ep->stid,
2841 sin6->sin6_addr.s6_addr, ntohs(sin6->sin6_port));
2842 return err;
2843}
2844
2845static int create_server4(struct c4iw_dev *dev, struct c4iw_listen_ep *ep)
2846{
2847 int err;
2848 struct sockaddr_in *sin = (struct sockaddr_in *)&ep->com.local_addr;
2849
2850 if (dev->rdev.lldi.enable_fw_ofld_conn) {
2851 do {
2852 err = cxgb4_create_server_filter(
2853 ep->com.dev->rdev.lldi.ports[0], ep->stid,
2854 sin->sin_addr.s_addr, sin->sin_port, 0,
2855 ep->com.dev->rdev.lldi.rxq_ids[0], 0, 0);
2856 if (err == -EBUSY) {
2857 set_current_state(TASK_UNINTERRUPTIBLE);
2858 schedule_timeout(usecs_to_jiffies(100));
2859 }
2860 } while (err == -EBUSY);
2861 } else {
2862 c4iw_init_wr_wait(&ep->com.wr_wait);
2863 err = cxgb4_create_server(ep->com.dev->rdev.lldi.ports[0],
2864 ep->stid, sin->sin_addr.s_addr, sin->sin_port,
2865 0, ep->com.dev->rdev.lldi.rxq_ids[0]);
2866 if (!err)
2867 err = c4iw_wait_for_reply(&ep->com.dev->rdev,
2868 &ep->com.wr_wait,
2869 0, 0, __func__);
2870 }
2871 if (err)
2872 pr_err("cxgb4_create_server/filter failed err %d stid %d laddr %pI4 lport %d\n"
2873 , err, ep->stid,
2874 &sin->sin_addr, ntohs(sin->sin_port));
2875 return err;
2876}
2877
cfdda9d7
SW		 2878int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog)
2879{
2880 int err = 0;
2881 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device);
2882 struct c4iw_listen_ep *ep;
2883
cfdda9d7
SW		 2884 might_sleep();
2885
2886 ep = alloc_ep(sizeof(*ep), GFP_KERNEL);
2887 if (!ep) {
2888 printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__);
2889 err = -ENOMEM;
2890 goto fail1;
2891 }
2892 PDBG("%s ep %p\n", __func__, ep);
2893 cm_id->add_ref(cm_id);
2894 ep->com.cm_id = cm_id;
2895 ep->com.dev = dev;
2896 ep->backlog = backlog;
24d44a39
SW		 2897 memcpy(&ep->com.local_addr, &cm_id->local_addr,
2898 sizeof(ep->com.local_addr));
cfdda9d7
SW		 2899
2900 /*
2901 * Allocate a server TID.
2902 */
8c044690
KS		 2903 if (dev->rdev.lldi.enable_fw_ofld_conn &&
2904 ep->com.local_addr.ss_family == AF_INET)
830662f6
VP		 2905 ep->stid = cxgb4_alloc_sftid(dev->rdev.lldi.tids,
2906 cm_id->local_addr.ss_family, ep);
1cab775c 2907 else
830662f6
VP		 2908 ep->stid = cxgb4_alloc_stid(dev->rdev.lldi.tids,
2909 cm_id->local_addr.ss_family, ep);
1cab775c 2910
cfdda9d7 2911 if (ep->stid == -1) {
be4c9bad 2912 printk(KERN_ERR MOD "%s - cannot alloc stid.\n", __func__);
cfdda9d7
SW		 2913 err = -ENOMEM;
2914 goto fail2;
2915 }
793dad94 2916 insert_handle(dev, &dev->stid_idr, ep, ep->stid);
cfdda9d7 2917 state_set(&ep->com, LISTEN);
830662f6
VP		 2918 if (ep->com.local_addr.ss_family == AF_INET)
2919 err = create_server4(dev, ep);
2920 else
2921 err = create_server6(dev, ep);
cfdda9d7
SW		 2922 if (!err) {
2923 cm_id->provider_data = ep;
2924 goto out;
2925 }
830662f6
VP		 2926 cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid,
2927 ep->com.local_addr.ss_family);
cfdda9d7
SW		 2928fail2:
2929 cm_id->rem_ref(cm_id);
2930 c4iw_put_ep(&ep->com);
2931fail1:
2932out:
2933 return err;
2934}
2935
2936int c4iw_destroy_listen(struct iw_cm_id *cm_id)
2937{
2938 int err;
2939 struct c4iw_listen_ep *ep = to_listen_ep(cm_id);
2940
2941 PDBG("%s ep %p\n", __func__, ep);
2942
2943 might_sleep();
2944 state_set(&ep->com, DEAD);
830662f6
VP		 2945 if (ep->com.dev->rdev.lldi.enable_fw_ofld_conn &&
2946 ep->com.local_addr.ss_family == AF_INET) {
1cab775c
VP		 2947 err = cxgb4_remove_server_filter(
2948 ep->com.dev->rdev.lldi.ports[0], ep->stid,
2949 ep->com.dev->rdev.lldi.rxq_ids[0], 0);
2950 } else {
2951 c4iw_init_wr_wait(&ep->com.wr_wait);
830662f6
VP		 2952 err = cxgb4_remove_server(
2953 ep->com.dev->rdev.lldi.ports[0], ep->stid,
2954 ep->com.dev->rdev.lldi.rxq_ids[0], 0);
1cab775c
VP		 2955 if (err)
2956 goto done;
2957 err = c4iw_wait_for_reply(&ep->com.dev->rdev, &ep->com.wr_wait,
2958 0, 0, __func__);
2959 }
793dad94 2960 remove_handle(ep->com.dev, &ep->com.dev->stid_idr, ep->stid);
830662f6
VP		 2961 cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid,
2962 ep->com.local_addr.ss_family);
cfdda9d7 2963done:
cfdda9d7
SW		 2964 cm_id->rem_ref(cm_id);
2965 c4iw_put_ep(&ep->com);
2966 return err;
2967}
2968
2969int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp)
2970{
2971 int ret = 0;
cfdda9d7
SW		 2972 int close = 0;
2973 int fatal = 0;
2974 struct c4iw_rdev *rdev;
cfdda9d7 2975
2f5b48c3 2976 mutex_lock(&ep->com.mutex);
cfdda9d7
SW		 2977
2978 PDBG("%s ep %p state %s, abrupt %d\n", __func__, ep,
2979 states[ep->com.state], abrupt);
2980
2981 rdev = &ep->com.dev->rdev;
2982 if (c4iw_fatal_error(rdev)) {
2983 fatal = 1;
2984 close_complete_upcall(ep);
2985 ep->com.state = DEAD;
2986 }
2987 switch (ep->com.state) {
2988 case MPA_REQ_WAIT:
2989 case MPA_REQ_SENT:
2990 case MPA_REQ_RCVD:
2991 case MPA_REP_SENT:
2992 case FPDU_MODE:
2993 close = 1;
2994 if (abrupt)
2995 ep->com.state = ABORTING;
2996 else {
2997 ep->com.state = CLOSING;
ca5a2202 2998 start_ep_timer(ep);
cfdda9d7
SW		 2999 }
3000 set_bit(CLOSE_SENT, &ep->com.flags);
3001 break;
3002 case CLOSING:
3003 if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) {
3004 close = 1;
3005 if (abrupt) {
ca5a2202 3006 stop_ep_timer(ep);
cfdda9d7
SW		 3007 ep->com.state = ABORTING;
3008 } else
3009 ep->com.state = MORIBUND;
3010 }
3011 break;
3012 case MORIBUND:
3013 case ABORTING:
3014 case DEAD:
3015 PDBG("%s ignoring disconnect ep %p state %u\n",
3016 __func__, ep, ep->com.state);
3017 break;
3018 default:
3019 BUG();
3020 break;
3021 }
3022
cfdda9d7 3023 if (close) {
8da7e7a5 3024 if (abrupt) {
793dad94 3025 set_bit(EP_DISC_ABORT, &ep->com.history);
8da7e7a5
SW		 3026 close_complete_upcall(ep);
3027 ret = send_abort(ep, NULL, gfp);
793dad94
VP		 3028 } else {
3029 set_bit(EP_DISC_CLOSE, &ep->com.history);
cfdda9d7 3030 ret = send_halfclose(ep, gfp);
793dad94 3031 }
cfdda9d7
SW		 3032 if (ret)
3033 fatal = 1;
3034 }
8da7e7a5 3035 mutex_unlock(&ep->com.mutex);
cfdda9d7
SW		 3036 if (fatal)
3037 release_ep_resources(ep);
3038 return ret;
3039}
3040
1cab775c
VP		 3041static void active_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb,
3042 struct cpl_fw6_msg_ofld_connection_wr_rpl *req)
3043{
3044 struct c4iw_ep *ep;
793dad94 3045 int atid = be32_to_cpu(req->tid);
1cab775c 3046
ef5d6355
VP		 3047 ep = (struct c4iw_ep *)lookup_atid(dev->rdev.lldi.tids,
3048 (__force u32) req->tid);
1cab775c
VP		 3049 if (!ep)
3050 return;
3051
3052 switch (req->retval) {
3053 case FW_ENOMEM:
793dad94
VP		 3054 set_bit(ACT_RETRY_NOMEM, &ep->com.history);
3055 if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) {
3056 send_fw_act_open_req(ep, atid);
3057 return;
3058 }
1cab775c 3059 case FW_EADDRINUSE:
793dad94
VP		 3060 set_bit(ACT_RETRY_INUSE, &ep->com.history);
3061 if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) {
3062 send_fw_act_open_req(ep, atid);
3063 return;
3064 }
1cab775c
VP		 3065 break;
3066 default:
3067 pr_info("%s unexpected ofld conn wr retval %d\n",
3068 __func__, req->retval);
3069 break;
3070 }
793dad94
VP		 3071 pr_err("active ofld_connect_wr failure %d atid %d\n",
3072 req->retval, atid);
3073 mutex_lock(&dev->rdev.stats.lock);
3074 dev->rdev.stats.act_ofld_conn_fails++;
3075 mutex_unlock(&dev->rdev.stats.lock);
1cab775c 3076 connect_reply_upcall(ep, status2errno(req->retval));
793dad94
VP		 3077 state_set(&ep->com, DEAD);
3078 remove_handle(dev, &dev->atid_idr, atid);
3079 cxgb4_free_atid(dev->rdev.lldi.tids, atid);
3080 dst_release(ep->dst);
3081 cxgb4_l2t_release(ep->l2t);
3082 c4iw_put_ep(&ep->com);
1cab775c
VP		 3083}
3084
3085static void passive_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb,
3086 struct cpl_fw6_msg_ofld_connection_wr_rpl *req)
3087{
3088 struct sk_buff *rpl_skb;
3089 struct cpl_pass_accept_req *cpl;
3090 int ret;
3091
710a3110 3092 rpl_skb = (struct sk_buff *)(unsigned long)req->cookie;
1cab775c
VP		 3093 BUG_ON(!rpl_skb);
3094 if (req->retval) {
3095 PDBG("%s passive open failure %d\n", __func__, req->retval);
793dad94
VP		 3096 mutex_lock(&dev->rdev.stats.lock);
3097 dev->rdev.stats.pas_ofld_conn_fails++;
3098 mutex_unlock(&dev->rdev.stats.lock);
1cab775c
VP		 3099 kfree_skb(rpl_skb);
3100 } else {
3101 cpl = (struct cpl_pass_accept_req *)cplhdr(rpl_skb);
3102 OPCODE_TID(cpl) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ,
ef5d6355
VP		 3103 (__force u32) htonl(
3104 (__force u32) req->tid)));
1cab775c
VP		 3105 ret = pass_accept_req(dev, rpl_skb);
3106 if (!ret)
3107 kfree_skb(rpl_skb);
3108 }
3109 return;
3110}
3111
3112static int deferred_fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb)
2f5b48c3
SW		 3113{
3114 struct cpl_fw6_msg *rpl = cplhdr(skb);
1cab775c
VP		 3115 struct cpl_fw6_msg_ofld_connection_wr_rpl *req;
3116
3117 switch (rpl->type) {
3118 case FW6_TYPE_CQE:
3119 c4iw_ev_dispatch(dev, (struct t4_cqe *)&rpl->data[0]);
3120 break;
3121 case FW6_TYPE_OFLD_CONNECTION_WR_RPL:
3122 req = (struct cpl_fw6_msg_ofld_connection_wr_rpl *)rpl->data;
3123 switch (req->t_state) {
3124 case TCP_SYN_SENT:
3125 active_ofld_conn_reply(dev, skb, req);
3126 break;
3127 case TCP_SYN_RECV:
3128 passive_ofld_conn_reply(dev, skb, req);
3129 break;
3130 default:
3131 pr_err("%s unexpected ofld conn wr state %d\n",
3132 __func__, req->t_state);
3133 break;
3134 }
3135 break;
3136 }
3137 return 0;
3138}
3139
3140static void build_cpl_pass_accept_req(struct sk_buff *skb, int stid , u8 tos)
3141{
3142 u32 l2info;
f079af7a 3143 u16 vlantag, len, hdr_len, eth_hdr_len;
1cab775c
VP		 3144 u8 intf;
3145 struct cpl_rx_pkt *cpl = cplhdr(skb);
3146 struct cpl_pass_accept_req *req;
3147 struct tcp_options_received tmp_opt;
f079af7a 3148 struct c4iw_dev *dev;
1cab775c 3149
f079af7a 3150 dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *)));
1cab775c 3151 /* Store values from cpl_rx_pkt in temporary location. */
ef5d6355
VP		 3152 vlantag = (__force u16) cpl->vlan;
3153 len = (__force u16) cpl->len;
3154 l2info = (__force u32) cpl->l2info;
3155 hdr_len = (__force u16) cpl->hdr_len;
1cab775c
VP		 3156 intf = cpl->iff;
3157
3158 __skb_pull(skb, sizeof(*req) + sizeof(struct rss_header));
3159
3160 /*
3161 * We need to parse the TCP options from SYN packet.
3162 * to generate cpl_pass_accept_req.
3163 */
3164 memset(&tmp_opt, 0, sizeof(tmp_opt));
3165 tcp_clear_options(&tmp_opt);
1a2c6181 3166 tcp_parse_options(skb, &tmp_opt, 0, NULL);
1cab775c
VP		 3167
3168 req = (struct cpl_pass_accept_req *)__skb_push(skb, sizeof(*req));
3169 memset(req, 0, sizeof(*req));
3170 req->l2info = cpu_to_be16(V_SYN_INTF(intf) |
ef5d6355
VP		 3171 V_SYN_MAC_IDX(G_RX_MACIDX(
3172 (__force int) htonl(l2info))) |
1cab775c 3173 F_SYN_XACT_MATCH);
f079af7a
VP		 3174 eth_hdr_len = is_t4(dev->rdev.lldi.adapter_type) ?
3175 G_RX_ETHHDR_LEN((__force int) htonl(l2info)) :
3176 G_RX_T5_ETHHDR_LEN((__force int) htonl(l2info));
ef5d6355
VP		 3177 req->hdr_len = cpu_to_be32(V_SYN_RX_CHAN(G_RX_CHAN(
3178 (__force int) htonl(l2info))) |
3179 V_TCP_HDR_LEN(G_RX_TCPHDR_LEN(
3180 (__force int) htons(hdr_len))) |
3181 V_IP_HDR_LEN(G_RX_IPHDR_LEN(
3182 (__force int) htons(hdr_len))) |
f079af7a 3183 V_ETH_HDR_LEN(G_RX_ETHHDR_LEN(eth_hdr_len)));
ef5d6355
VP		 3184 req->vlan = (__force __be16) vlantag;
3185 req->len = (__force __be16) len;
1cab775c
VP		 3186 req->tos_stid = cpu_to_be32(PASS_OPEN_TID(stid) |
3187 PASS_OPEN_TOS(tos));
3188 req->tcpopt.mss = htons(tmp_opt.mss_clamp);
3189 if (tmp_opt.wscale_ok)
3190 req->tcpopt.wsf = tmp_opt.snd_wscale;
3191 req->tcpopt.tstamp = tmp_opt.saw_tstamp;
3192 if (tmp_opt.sack_ok)
3193 req->tcpopt.sack = 1;
3194 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ, 0));
3195 return;
3196}
3197
3198static void send_fw_pass_open_req(struct c4iw_dev *dev, struct sk_buff *skb,
3199 __be32 laddr, __be16 lport,
3200 __be32 raddr, __be16 rport,
3201 u32 rcv_isn, u32 filter, u16 window,
3202 u32 rss_qid, u8 port_id)
3203{
3204 struct sk_buff *req_skb;
3205 struct fw_ofld_connection_wr *req;
3206 struct cpl_pass_accept_req *cpl = cplhdr(skb);
3207
3208 req_skb = alloc_skb(sizeof(struct fw_ofld_connection_wr), GFP_KERNEL);
3209 req = (struct fw_ofld_connection_wr *)__skb_put(req_skb, sizeof(*req));
3210 memset(req, 0, sizeof(*req));
3211 req->op_compl = htonl(V_WR_OP(FW_OFLD_CONNECTION_WR) | FW_WR_COMPL(1));
3212 req->len16_pkd = htonl(FW_WR_LEN16(DIV_ROUND_UP(sizeof(*req), 16)));
3213 req->le.version_cpl = htonl(F_FW_OFLD_CONNECTION_WR_CPL);
ef5d6355 3214 req->le.filter = (__force __be32) filter;
1cab775c
VP		 3215 req->le.lport = lport;
3216 req->le.pport = rport;
3217 req->le.u.ipv4.lip = laddr;
3218 req->le.u.ipv4.pip = raddr;
3219 req->tcb.rcv_nxt = htonl(rcv_isn + 1);
3220 req->tcb.rcv_adv = htons(window);
3221 req->tcb.t_state_to_astid =
3222 htonl(V_FW_OFLD_CONNECTION_WR_T_STATE(TCP_SYN_RECV) |
3223 V_FW_OFLD_CONNECTION_WR_RCV_SCALE(cpl->tcpopt.wsf) |
3224 V_FW_OFLD_CONNECTION_WR_ASTID(
3225 GET_PASS_OPEN_TID(ntohl(cpl->tos_stid))));
3226
3227 /*
3228 * We store the qid in opt2 which will be used by the firmware
3229 * to send us the wr response.
3230 */
3231 req->tcb.opt2 = htonl(V_RSS_QUEUE(rss_qid));
3232
3233 /*
3234 * We initialize the MSS index in TCB to 0xF.
3235 * So that when driver sends cpl_pass_accept_rpl
3236 * TCB picks up the correct value. If this was 0
3237 * TP will ignore any value > 0 for MSS index.
3238 */
3239 req->tcb.opt0 = cpu_to_be64(V_MSS_IDX(0xF));
710a3110 3240 req->cookie = (unsigned long)skb;
1cab775c
VP		 3241
3242 set_wr_txq(req_skb, CPL_PRIORITY_CONTROL, port_id);
3243 cxgb4_ofld_send(dev->rdev.lldi.ports[0], req_skb);
3244}
3245
3246/*
3247 * Handler for CPL_RX_PKT message. Need to handle cpl_rx_pkt
3248 * messages when a filter is being used instead of server to
3249 * redirect a syn packet. When packets hit filter they are redirected
3250 * to the offload queue and driver tries to establish the connection
3251 * using firmware work request.
3252 */
3253static int rx_pkt(struct c4iw_dev *dev, struct sk_buff *skb)
3254{
3255 int stid;
3256 unsigned int filter;
3257 struct ethhdr *eh = NULL;
3258 struct vlan_ethhdr *vlan_eh = NULL;
3259 struct iphdr *iph;
3260 struct tcphdr *tcph;
3261 struct rss_header *rss = (void *)skb->data;
3262 struct cpl_rx_pkt *cpl = (void *)skb->data;
3263 struct cpl_pass_accept_req *req = (void *)(rss + 1);
3264 struct l2t_entry *e;
3265 struct dst_entry *dst;
1cab775c
VP		 3266 struct c4iw_ep *lep;
3267 u16 window;
3268 struct port_info *pi;
3269 struct net_device *pdev;
f079af7a 3270 u16 rss_qid, eth_hdr_len;
1cab775c
VP		 3271 int step;
3272 u32 tx_chan;
3273 struct neighbour *neigh;
3274
3275 /* Drop all non-SYN packets */
3276 if (!(cpl->l2info & cpu_to_be32(F_RXF_SYN)))
3277 goto reject;
3278
3279 /*
3280 * Drop all packets which did not hit the filter.
3281 * Unlikely to happen.
3282 */
3283 if (!(rss->filter_hit && rss->filter_tid))
3284 goto reject;
3285
3286 /*
3287 * Calculate the server tid from filter hit index from cpl_rx_pkt.
3288 */
a4ea025f 3289 stid = (__force int) cpu_to_be32((__force u32) rss->hash_val);
1cab775c
VP		 3290
3291 lep = (struct c4iw_ep *)lookup_stid(dev->rdev.lldi.tids, stid);
3292 if (!lep) {
3293 PDBG("%s connect request on invalid stid %d\n", __func__, stid);
3294 goto reject;
3295 }
3296
f079af7a
VP		 3297 eth_hdr_len = is_t4(dev->rdev.lldi.adapter_type) ?
3298 G_RX_ETHHDR_LEN(htonl(cpl->l2info)) :
3299 G_RX_T5_ETHHDR_LEN(htonl(cpl->l2info));
3300 if (eth_hdr_len == ETH_HLEN) {
1cab775c
VP		 3301 eh = (struct ethhdr *)(req + 1);
3302 iph = (struct iphdr *)(eh + 1);
3303 } else {
3304 vlan_eh = (struct vlan_ethhdr *)(req + 1);
3305 iph = (struct iphdr *)(vlan_eh + 1);
3306 skb->vlan_tci = ntohs(cpl->vlan);
3307 }
3308
3309 if (iph->version != 0x4)
3310 goto reject;
3311
3312 tcph = (struct tcphdr *)(iph + 1);
3313 skb_set_network_header(skb, (void *)iph - (void *)rss);
3314 skb_set_transport_header(skb, (void *)tcph - (void *)rss);
3315 skb_get(skb);
3316
3317 PDBG("%s lip 0x%x lport %u pip 0x%x pport %u tos %d\n", __func__,
3318 ntohl(iph->daddr), ntohs(tcph->dest), ntohl(iph->saddr),
3319 ntohs(tcph->source), iph->tos);
3320
830662f6
VP		 3321 dst = find_route(dev, iph->daddr, iph->saddr, tcph->dest, tcph->source,
3322 iph->tos);
3323 if (!dst) {
1cab775c
VP		 3324 pr_err("%s - failed to find dst entry!\n",
3325 __func__);
3326 goto reject;
3327 }
1cab775c
VP		 3328 neigh = dst_neigh_lookup_skb(dst, skb);
3329
aaa0c23c
ZZ		 3330 if (!neigh) {
3331 pr_err("%s - failed to allocate neigh!\n",
3332 __func__);
3333 goto free_dst;
3334 }
3335
1cab775c
VP		 3336 if (neigh->dev->flags & IFF_LOOPBACK) {
3337 pdev = ip_dev_find(&init_net, iph->daddr);
3338 e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh,
3339 pdev, 0);
3340 pi = (struct port_info *)netdev_priv(pdev);
3341 tx_chan = cxgb4_port_chan(pdev);
3342 dev_put(pdev);
3343 } else {
830662f6 3344 pdev = get_real_dev(neigh->dev);
1cab775c 3345 e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh,
830662f6
VP		 3346 pdev, 0);
3347 pi = (struct port_info *)netdev_priv(pdev);
3348 tx_chan = cxgb4_port_chan(pdev);
1cab775c 3349 }
ebf00060 3350 neigh_release(neigh);
1cab775c
VP		 3351 if (!e) {
3352 pr_err("%s - failed to allocate l2t entry!\n",
3353 __func__);
3354 goto free_dst;
3355 }
3356
3357 step = dev->rdev.lldi.nrxq / dev->rdev.lldi.nchan;
3358 rss_qid = dev->rdev.lldi.rxq_ids[pi->port_id * step];
ef5d6355 3359 window = (__force u16) htons((__force u16)tcph->window);
1cab775c
VP		 3360
3361 /* Calcuate filter portion for LE region. */
41b4f86c
KS		 3362 filter = (__force unsigned int) cpu_to_be32(cxgb4_select_ntuple(
3363 dev->rdev.lldi.ports[0],
3364 e));
1cab775c
VP		 3365
3366 /*
3367 * Synthesize the cpl_pass_accept_req. We have everything except the
3368 * TID. Once firmware sends a reply with TID we update the TID field
3369 * in cpl and pass it through the regular cpl_pass_accept_req path.
3370 */
3371 build_cpl_pass_accept_req(skb, stid, iph->tos);
3372 send_fw_pass_open_req(dev, skb, iph->daddr, tcph->dest, iph->saddr,
3373 tcph->source, ntohl(tcph->seq), filter, window,
3374 rss_qid, pi->port_id);
3375 cxgb4_l2t_release(e);
3376free_dst:
3377 dst_release(dst);
3378reject:
2f5b48c3
SW		 3379 return 0;
3380}
3381
be4c9bad
RD		 3382/*
3383 * These are the real handlers that are called from a
3384 * work queue.
3385 */
3386static c4iw_handler_func work_handlers[NUM_CPL_CMDS] = {
3387 [CPL_ACT_ESTABLISH] = act_establish,
3388 [CPL_ACT_OPEN_RPL] = act_open_rpl,
3389 [CPL_RX_DATA] = rx_data,
3390 [CPL_ABORT_RPL_RSS] = abort_rpl,
3391 [CPL_ABORT_RPL] = abort_rpl,
3392 [CPL_PASS_OPEN_RPL] = pass_open_rpl,
3393 [CPL_CLOSE_LISTSRV_RPL] = close_listsrv_rpl,
3394 [CPL_PASS_ACCEPT_REQ] = pass_accept_req,
3395 [CPL_PASS_ESTABLISH] = pass_establish,
3396 [CPL_PEER_CLOSE] = peer_close,
3397 [CPL_ABORT_REQ_RSS] = peer_abort,
3398 [CPL_CLOSE_CON_RPL] = close_con_rpl,
3399 [CPL_RDMA_TERMINATE] = terminate,
2f5b48c3 3400 [CPL_FW4_ACK] = fw4_ack,
1cab775c
VP		 3401 [CPL_FW6_MSG] = deferred_fw6_msg,
3402 [CPL_RX_PKT] = rx_pkt
be4c9bad
RD		 3403};
3404
3405static void process_timeout(struct c4iw_ep *ep)
3406{
3407 struct c4iw_qp_attributes attrs;
3408 int abort = 1;
3409
2f5b48c3 3410 mutex_lock(&ep->com.mutex);
be4c9bad
RD		 3411 PDBG("%s ep %p tid %u state %d\n", __func__, ep, ep->hwtid,
3412 ep->com.state);
793dad94 3413 set_bit(TIMEDOUT, &ep->com.history);
be4c9bad
RD		 3414 switch (ep->com.state) {
3415 case MPA_REQ_SENT:
3416 __state_set(&ep->com, ABORTING);
3417 connect_reply_upcall(ep, -ETIMEDOUT);
3418 break;
3419 case MPA_REQ_WAIT:
3420 __state_set(&ep->com, ABORTING);
3421 break;
3422 case CLOSING:
3423 case MORIBUND:
3424 if (ep->com.cm_id && ep->com.qp) {
3425 attrs.next_state = C4IW_QP_STATE_ERROR;
3426 c4iw_modify_qp(ep->com.qp->rhp,
3427 ep->com.qp, C4IW_QP_ATTR_NEXT_STATE,
3428 &attrs, 1);
3429 }
3430 __state_set(&ep->com, ABORTING);
3431 break;
3432 default:
76f267b7 3433 WARN(1, "%s unexpected state ep %p tid %u state %u\n",
be4c9bad 3434 __func__, ep, ep->hwtid, ep->com.state);
be4c9bad
RD		 3435 abort = 0;
3436 }
2f5b48c3 3437 mutex_unlock(&ep->com.mutex);
be4c9bad
RD		 3438 if (abort)
3439 abort_connection(ep, NULL, GFP_KERNEL);
3440 c4iw_put_ep(&ep->com);
3441}
3442
3443static void process_timedout_eps(void)
3444{
3445 struct c4iw_ep *ep;
3446
3447 spin_lock_irq(&timeout_lock);
3448 while (!list_empty(&timeout_list)) {
3449 struct list_head *tmp;
3450
3451 tmp = timeout_list.next;
3452 list_del(tmp);
3453 spin_unlock_irq(&timeout_lock);
3454 ep = list_entry(tmp, struct c4iw_ep, entry);
3455 process_timeout(ep);
3456 spin_lock_irq(&timeout_lock);
3457 }
3458 spin_unlock_irq(&timeout_lock);
3459}
3460
3461static void process_work(struct work_struct *work)
3462{
3463 struct sk_buff *skb = NULL;
3464 struct c4iw_dev *dev;
c1d7356c 3465 struct cpl_act_establish *rpl;
be4c9bad
RD		 3466 unsigned int opcode;
3467 int ret;
3468
3469 while ((skb = skb_dequeue(&rxq))) {
3470 rpl = cplhdr(skb);
3471 dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *)));
3472 opcode = rpl->ot.opcode;
3473
3474 BUG_ON(!work_handlers[opcode]);
3475 ret = work_handlers[opcode](dev, skb);
3476 if (!ret)
3477 kfree_skb(skb);
3478 }
3479 process_timedout_eps();
3480}
3481
3482static DECLARE_WORK(skb_work, process_work);
3483
3484static void ep_timeout(unsigned long arg)
3485{
3486 struct c4iw_ep *ep = (struct c4iw_ep *)arg;
1ec779cc 3487 int kickit = 0;
be4c9bad
RD		 3488
3489 spin_lock(&timeout_lock);
1ec779cc
VP		 3490 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) {
3491 list_add_tail(&ep->entry, &timeout_list);
3492 kickit = 1;
3493 }
be4c9bad 3494 spin_unlock(&timeout_lock);
1ec779cc
VP		 3495 if (kickit)
3496 queue_work(workq, &skb_work);
be4c9bad
RD		 3497}
3498
cfdda9d7
SW		 3499/*
3500 * All the CM events are handled on a work queue to have a safe context.
3501 */
3502static int sched(struct c4iw_dev *dev, struct sk_buff *skb)
3503{
3504
3505 /*
3506 * Save dev in the skb->cb area.
3507 */
3508 *((struct c4iw_dev **) (skb->cb + sizeof(void *))) = dev;
3509
3510 /*
3511 * Queue the skb and schedule the worker thread.
3512 */
3513 skb_queue_tail(&rxq, skb);
3514 queue_work(workq, &skb_work);
3515 return 0;
3516}
3517
3518static int set_tcb_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
3519{
3520 struct cpl_set_tcb_rpl *rpl = cplhdr(skb);
3521
3522 if (rpl->status != CPL_ERR_NONE) {
3523 printk(KERN_ERR MOD "Unexpected SET_TCB_RPL status %u "
3524 "for tid %u\n", rpl->status, GET_TID(rpl));
3525 }
2f5b48c3 3526 kfree_skb(skb);
cfdda9d7
SW		 3527 return 0;
3528}
3529
be4c9bad
RD		 3530static int fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb)
3531{
3532 struct cpl_fw6_msg *rpl = cplhdr(skb);
3533 struct c4iw_wr_wait *wr_waitp;
3534 int ret;
3535
3536 PDBG("%s type %u\n", __func__, rpl->type);
3537
3538 switch (rpl->type) {
5be78ee9 3539 case FW6_TYPE_WR_RPL:
be4c9bad 3540 ret = (int)((be64_to_cpu(rpl->data[0]) >> 8) & 0xff);
c8e081a1 3541 wr_waitp = (struct c4iw_wr_wait *)(__force unsigned long) rpl->data[1];
be4c9bad 3542 PDBG("%s wr_waitp %p ret %u\n", __func__, wr_waitp, ret);
d9594d99
SW		 3543 if (wr_waitp)
3544 c4iw_wake_up(wr_waitp, ret ? -ret : 0);
2f5b48c3 3545 kfree_skb(skb);
be4c9bad 3546 break;
5be78ee9 3547 case FW6_TYPE_CQE:
5be78ee9 3548 case FW6_TYPE_OFLD_CONNECTION_WR_RPL:
1cab775c 3549 sched(dev, skb);
5be78ee9 3550 break;
be4c9bad
RD		 3551 default:
3552 printk(KERN_ERR MOD "%s unexpected fw6 msg type %u\n", __func__,
3553 rpl->type);
2f5b48c3 3554 kfree_skb(skb);
be4c9bad
RD		 3555 break;
3556 }
3557 return 0;
3558}
3559
8da7e7a5
SW		 3560static int peer_abort_intr(struct c4iw_dev *dev, struct sk_buff *skb)
3561{
3562 struct cpl_abort_req_rss *req = cplhdr(skb);
3563 struct c4iw_ep *ep;
3564 struct tid_info *t = dev->rdev.lldi.tids;
3565 unsigned int tid = GET_TID(req);
3566
3567 ep = lookup_tid(t, tid);
14b92228
SW		 3568 if (!ep) {
3569 printk(KERN_WARNING MOD
3570 "Abort on non-existent endpoint, tid %d\n", tid);
3571 kfree_skb(skb);
3572 return 0;
3573 }
8da7e7a5
SW		 3574 if (is_neg_adv_abort(req->status)) {
3575 PDBG("%s neg_adv_abort ep %p tid %u\n", __func__, ep,
3576 ep->hwtid);
3577 kfree_skb(skb);
3578 return 0;
3579 }
3580 PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid,
3581 ep->com.state);
3582
3583 /*
3584 * Wake up any threads in rdma_init() or rdma_fini().
7c0a33d6
VP		 3585 * However, if we are on MPAv2 and want to retry with MPAv1
3586 * then, don't wake up yet.
8da7e7a5 3587 */
7c0a33d6
VP		 3588 if (mpa_rev == 2 && !ep->tried_with_mpa_v1) {
3589 if (ep->com.state != MPA_REQ_SENT)
3590 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
3591 } else
3592 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
8da7e7a5
SW		 3593 sched(dev, skb);
3594 return 0;
3595}
3596
be4c9bad
RD		 3597/*
3598 * Most upcalls from the T4 Core go to sched() to
3599 * schedule the processing on a work queue.
3600 */
3601c4iw_handler_func c4iw_handlers[NUM_CPL_CMDS] = {
3602 [CPL_ACT_ESTABLISH] = sched,
3603 [CPL_ACT_OPEN_RPL] = sched,
3604 [CPL_RX_DATA] = sched,
3605 [CPL_ABORT_RPL_RSS] = sched,
3606 [CPL_ABORT_RPL] = sched,
3607 [CPL_PASS_OPEN_RPL] = sched,
3608 [CPL_CLOSE_LISTSRV_RPL] = sched,
3609 [CPL_PASS_ACCEPT_REQ] = sched,
3610 [CPL_PASS_ESTABLISH] = sched,
3611 [CPL_PEER_CLOSE] = sched,
3612 [CPL_CLOSE_CON_RPL] = sched,
8da7e7a5 3613 [CPL_ABORT_REQ_RSS] = peer_abort_intr,
be4c9bad
RD		 3614 [CPL_RDMA_TERMINATE] = sched,
3615 [CPL_FW4_ACK] = sched,
3616 [CPL_SET_TCB_RPL] = set_tcb_rpl,
1cab775c
VP		 3617 [CPL_FW6_MSG] = fw6_msg,
3618 [CPL_RX_PKT] = sched
be4c9bad
RD		 3619};
3620
cfdda9d7
SW		 3621int __init c4iw_cm_init(void)
3622{
be4c9bad 3623 spin_lock_init(&timeout_lock);
cfdda9d7
SW		 3624 skb_queue_head_init(&rxq);
3625
3626 workq = create_singlethread_workqueue("iw_cxgb4");
3627 if (!workq)
3628 return -ENOMEM;
3629
cfdda9d7
SW		 3630 return 0;
3631}
3632
3633void __exit c4iw_cm_term(void)
3634{
be4c9bad 3635 WARN_ON(!list_empty(&timeout_list));
cfdda9d7
SW		 3636 flush_workqueue(workq);
3637 destroy_workqueue(workq);
3638}
Linux 6.x block layer and io_uring tree(s)