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RDMA/cxgb4: Connect_request_upcall fixes
[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
be13b2df 971static void close_complete_upcall(struct c4iw_ep *ep, int status)
cfdda9d7
SW		 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;
be13b2df 978 event.status = status;
cfdda9d7
SW		 979 if (ep->com.cm_id) {
980 PDBG("close complete delivered ep %p cm_id %p tid %u\n",
981 ep, ep->com.cm_id, ep->hwtid);
982 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
983 ep->com.cm_id->rem_ref(ep->com.cm_id);
984 ep->com.cm_id = NULL;
793dad94 985 set_bit(CLOSE_UPCALL, &ep->com.history);
cfdda9d7
SW		 986 }
987}
988
989static int abort_connection(struct c4iw_ep *ep, struct sk_buff *skb, gfp_t gfp)
990{
991 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
cfdda9d7 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
be13b2df 1070static int connect_request_upcall(struct c4iw_ep *ep)
cfdda9d7
SW		 1071{
1072 struct iw_cm_event event;
be13b2df 1073 int ret;
cfdda9d7
SW		 1074
1075 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1076 memset(&event, 0, sizeof(event));
1077 event.event = IW_CM_EVENT_CONNECT_REQUEST;
24d44a39
SW		 1078 memcpy(&event.local_addr, &ep->com.local_addr,
1079 sizeof(ep->com.local_addr));
1080 memcpy(&event.remote_addr, &ep->com.remote_addr,
1081 sizeof(ep->com.remote_addr));
cfdda9d7 1082 event.provider_data = ep;
d2fe99e8
KS		 1083 if (!ep->tried_with_mpa_v1) {
1084 /* this means MPA_v2 is used */
1085 event.ord = ep->ord;
1086 event.ird = ep->ird;
1087 event.private_data_len = ep->plen -
1088 sizeof(struct mpa_v2_conn_params);
1089 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) +
1090 sizeof(struct mpa_v2_conn_params);
1091 } else {
1092 /* this means MPA_v1 is used. Send max supported */
1093 event.ord = c4iw_max_read_depth;
1094 event.ird = c4iw_max_read_depth;
1095 event.private_data_len = ep->plen;
1096 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message);
1097 }
be13b2df
SW		 1098 c4iw_get_ep(&ep->com);
1099 ret = ep->parent_ep->com.cm_id->event_handler(ep->parent_ep->com.cm_id,
1100 &event);
1101 if (ret)
1102 c4iw_put_ep(&ep->com);
793dad94 1103 set_bit(CONNREQ_UPCALL, &ep->com.history);
cfdda9d7 1104 c4iw_put_ep(&ep->parent_ep->com);
be13b2df 1105 return ret;
cfdda9d7
SW		 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__);
cfdda9d7
SW		 1404 mpa = (struct mpa_message *) ep->mpa_pkt;
1405
1406 /*
1407 * Validate MPA Header.
1408 */
d2fe99e8
KS		 1409 if (mpa->revision > mpa_rev) {
1410 printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d,"
1411 " Received = %d\n", __func__, mpa_rev, mpa->revision);
7c0a33d6 1412 stop_ep_timer(ep);
cfdda9d7
SW		 1413 abort_connection(ep, skb, GFP_KERNEL);
1414 return;
1415 }
1416
1417 if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) {
7c0a33d6 1418 stop_ep_timer(ep);
cfdda9d7
SW		 1419 abort_connection(ep, skb, GFP_KERNEL);
1420 return;
1421 }
1422
1423 plen = ntohs(mpa->private_data_size);
1424
1425 /*
1426 * Fail if there's too much private data.
1427 */
1428 if (plen > MPA_MAX_PRIVATE_DATA) {
7c0a33d6 1429 stop_ep_timer(ep);
cfdda9d7
SW		 1430 abort_connection(ep, skb, GFP_KERNEL);
1431 return;
1432 }
1433
1434 /*
1435 * If plen does not account for pkt size
1436 */
1437 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) {
7c0a33d6 1438 stop_ep_timer(ep);
cfdda9d7
SW		 1439 abort_connection(ep, skb, GFP_KERNEL);
1440 return;
1441 }
1442 ep->plen = (u8) plen;
1443
1444 /*
1445 * If we don't have all the pdata yet, then bail.
1446 */
1447 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen))
1448 return;
1449
1450 /*
1451 * If we get here we have accumulated the entire mpa
1452 * start reply message including private data.
1453 */
1454 ep->mpa_attr.initiator = 0;
1455 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0;
1456 ep->mpa_attr.recv_marker_enabled = markers_enabled;
1457 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0;
d2fe99e8
KS		 1458 ep->mpa_attr.version = mpa->revision;
1459 if (mpa->revision == 1)
1460 ep->tried_with_mpa_v1 = 1;
1461 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
1462
1463 if (mpa->revision == 2) {
1464 ep->mpa_attr.enhanced_rdma_conn =
1465 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0;
1466 if (ep->mpa_attr.enhanced_rdma_conn) {
1467 mpa_v2_params = (struct mpa_v2_conn_params *)
1468 (ep->mpa_pkt + sizeof(*mpa));
1469 ep->ird = ntohs(mpa_v2_params->ird) &
1470 MPA_V2_IRD_ORD_MASK;
1471 ep->ord = ntohs(mpa_v2_params->ord) &
1472 MPA_V2_IRD_ORD_MASK;
1473 if (ntohs(mpa_v2_params->ird) & MPA_V2_PEER2PEER_MODEL)
1474 if (peer2peer) {
1475 if (ntohs(mpa_v2_params->ord) &
1476 MPA_V2_RDMA_WRITE_RTR)
1477 ep->mpa_attr.p2p_type =
1478 FW_RI_INIT_P2PTYPE_RDMA_WRITE;
1479 else if (ntohs(mpa_v2_params->ord) &
1480 MPA_V2_RDMA_READ_RTR)
1481 ep->mpa_attr.p2p_type =
1482 FW_RI_INIT_P2PTYPE_READ_REQ;
1483 }
1484 }
1485 } else if (mpa->revision == 1)
1486 if (peer2peer)
1487 ep->mpa_attr.p2p_type = p2p_type;
1488
cfdda9d7
SW		 1489 PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, "
1490 "xmit_marker_enabled=%d, version=%d p2p_type=%d\n", __func__,
1491 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled,
1492 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version,
1493 ep->mpa_attr.p2p_type);
1494
1495 state_set(&ep->com, MPA_REQ_RCVD);
be13b2df 1496 stop_ep_timer(ep);
cfdda9d7
SW		 1497
1498 /* drive upcall */
be13b2df
SW		 1499 mutex_lock(&ep->parent_ep->com.mutex);
1500 if (ep->parent_ep->com.state != DEAD) {
1501 if (connect_request_upcall(ep))
1502 abort_connection(ep, skb, GFP_KERNEL);
1503 } else {
1504 abort_connection(ep, skb, GFP_KERNEL);
1505 }
1506 mutex_unlock(&ep->parent_ep->com.mutex);
cfdda9d7
SW		 1507 return;
1508}
1509
1510static int rx_data(struct c4iw_dev *dev, struct sk_buff *skb)
1511{
1512 struct c4iw_ep *ep;
1513 struct cpl_rx_data *hdr = cplhdr(skb);
1514 unsigned int dlen = ntohs(hdr->len);
1515 unsigned int tid = GET_TID(hdr);
1516 struct tid_info *t = dev->rdev.lldi.tids;
793dad94 1517 __u8 status = hdr->status;
cfdda9d7
SW		 1518
1519 ep = lookup_tid(t, tid);
1520 PDBG("%s ep %p tid %u dlen %u\n", __func__, ep, ep->hwtid, dlen);
1521 skb_pull(skb, sizeof(*hdr));
1522 skb_trim(skb, dlen);
1523
cfdda9d7
SW		 1524 /* update RX credits */
1525 update_rx_credits(ep, dlen);
1526
1527 switch (state_read(&ep->com)) {
1528 case MPA_REQ_SENT:
55abf8df 1529 ep->rcv_seq += dlen;
cfdda9d7
SW		 1530 process_mpa_reply(ep, skb);
1531 break;
1532 case MPA_REQ_WAIT:
55abf8df 1533 ep->rcv_seq += dlen;
cfdda9d7
SW		 1534 process_mpa_request(ep, skb);
1535 break;
1557967b
VP		 1536 case FPDU_MODE: {
1537 struct c4iw_qp_attributes attrs;
1538 BUG_ON(!ep->com.qp);
e8e5b927 1539 if (status)
1557967b 1540 pr_err("%s Unexpected streaming data." \
04236df2
VP		 1541 " qpid %u ep %p state %d tid %u status %d\n",
1542 __func__, ep->com.qp->wq.sq.qid, ep,
1543 state_read(&ep->com), ep->hwtid, status);
97d7ec0c 1544 attrs.next_state = C4IW_QP_STATE_TERMINATE;
1557967b 1545 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
97d7ec0c 1546 C4IW_QP_ATTR_NEXT_STATE, &attrs, 0);
cfdda9d7
SW		 1547 break;
1548 }
1557967b
VP		 1549 default:
1550 break;
1551 }
cfdda9d7
SW		 1552 return 0;
1553}
1554
1555static int abort_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
1556{
1557 struct c4iw_ep *ep;
1558 struct cpl_abort_rpl_rss *rpl = cplhdr(skb);
cfdda9d7
SW		 1559 int release = 0;
1560 unsigned int tid = GET_TID(rpl);
1561 struct tid_info *t = dev->rdev.lldi.tids;
1562
1563 ep = lookup_tid(t, tid);
4984037b
VP		 1564 if (!ep) {
1565 printk(KERN_WARNING MOD "Abort rpl to freed endpoint\n");
1566 return 0;
1567 }
92dd6c3d 1568 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
2f5b48c3 1569 mutex_lock(&ep->com.mutex);
cfdda9d7
SW		 1570 switch (ep->com.state) {
1571 case ABORTING:
91e9c071 1572 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
cfdda9d7
SW		 1573 __state_set(&ep->com, DEAD);
1574 release = 1;
1575 break;
1576 default:
1577 printk(KERN_ERR "%s ep %p state %d\n",
1578 __func__, ep, ep->com.state);
1579 break;
1580 }
2f5b48c3 1581 mutex_unlock(&ep->com.mutex);
cfdda9d7
SW		 1582
1583 if (release)
1584 release_ep_resources(ep);
1585 return 0;
1586}
1587
5be78ee9
VP		 1588static void send_fw_act_open_req(struct c4iw_ep *ep, unsigned int atid)
1589{
1590 struct sk_buff *skb;
1591 struct fw_ofld_connection_wr *req;
1592 unsigned int mtu_idx;
1593 int wscale;
830662f6 1594 struct sockaddr_in *sin;
5be78ee9
VP		 1595
1596 skb = get_skb(NULL, sizeof(*req), GFP_KERNEL);
1597 req = (struct fw_ofld_connection_wr *)__skb_put(skb, sizeof(*req));
1598 memset(req, 0, sizeof(*req));
1599 req->op_compl = htonl(V_WR_OP(FW_OFLD_CONNECTION_WR));
1600 req->len16_pkd = htonl(FW_WR_LEN16(DIV_ROUND_UP(sizeof(*req), 16)));
41b4f86c
KS		 1601 req->le.filter = cpu_to_be32(cxgb4_select_ntuple(
1602 ep->com.dev->rdev.lldi.ports[0],
5be78ee9 1603 ep->l2t));
830662f6
VP		 1604 sin = (struct sockaddr_in *)&ep->com.local_addr;
1605 req->le.lport = sin->sin_port;
1606 req->le.u.ipv4.lip = sin->sin_addr.s_addr;
1607 sin = (struct sockaddr_in *)&ep->com.remote_addr;
1608 req->le.pport = sin->sin_port;
1609 req->le.u.ipv4.pip = sin->sin_addr.s_addr;
5be78ee9
VP		 1610 req->tcb.t_state_to_astid =
1611 htonl(V_FW_OFLD_CONNECTION_WR_T_STATE(TCP_SYN_SENT) |
1612 V_FW_OFLD_CONNECTION_WR_ASTID(atid));
1613 req->tcb.cplrxdataack_cplpassacceptrpl =
1614 htons(F_FW_OFLD_CONNECTION_WR_CPLRXDATAACK);
ef5d6355 1615 req->tcb.tx_max = (__force __be32) jiffies;
793dad94 1616 req->tcb.rcv_adv = htons(1);
5be78ee9
VP		 1617 cxgb4_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx);
1618 wscale = compute_wscale(rcv_win);
ef5d6355 1619 req->tcb.opt0 = (__force __be64) (TCAM_BYPASS(1) |
5be78ee9
VP		 1620 (nocong ? NO_CONG(1) : 0) |
1621 KEEP_ALIVE(1) |
1622 DELACK(1) |
1623 WND_SCALE(wscale) |
1624 MSS_IDX(mtu_idx) |
1625 L2T_IDX(ep->l2t->idx) |
1626 TX_CHAN(ep->tx_chan) |
1627 SMAC_SEL(ep->smac_idx) |
1628 DSCP(ep->tos) |
1629 ULP_MODE(ULP_MODE_TCPDDP) |
ef5d6355
VP		 1630 RCV_BUFSIZ(rcv_win >> 10));
1631 req->tcb.opt2 = (__force __be32) (PACE(1) |
5be78ee9
VP		 1632 TX_QUEUE(ep->com.dev->rdev.lldi.tx_modq[ep->tx_chan]) |
1633 RX_CHANNEL(0) |
1634 CCTRL_ECN(enable_ecn) |
ef5d6355 1635 RSS_QUEUE_VALID | RSS_QUEUE(ep->rss_qid));
5be78ee9 1636 if (enable_tcp_timestamps)
ef5d6355 1637 req->tcb.opt2 |= (__force __be32) TSTAMPS_EN(1);
5be78ee9 1638 if (enable_tcp_sack)
ef5d6355 1639 req->tcb.opt2 |= (__force __be32) SACK_EN(1);
5be78ee9 1640 if (wscale && enable_tcp_window_scaling)
ef5d6355
VP		 1641 req->tcb.opt2 |= (__force __be32) WND_SCALE_EN(1);
1642 req->tcb.opt0 = cpu_to_be64((__force u64) req->tcb.opt0);
1643 req->tcb.opt2 = cpu_to_be32((__force u32) req->tcb.opt2);
793dad94
VP		 1644 set_wr_txq(skb, CPL_PRIORITY_CONTROL, ep->ctrlq_idx);
1645 set_bit(ACT_OFLD_CONN, &ep->com.history);
5be78ee9
VP		 1646 c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
1647}
1648
cfdda9d7
SW		 1649/*
1650 * Return whether a failed active open has allocated a TID
1651 */
1652static inline int act_open_has_tid(int status)
1653{
1654 return status != CPL_ERR_TCAM_FULL && status != CPL_ERR_CONN_EXIST &&
1655 status != CPL_ERR_ARP_MISS;
1656}
1657
793dad94
VP		 1658#define ACT_OPEN_RETRY_COUNT 2
1659
830662f6
VP		 1660static int import_ep(struct c4iw_ep *ep, int iptype, __u8 *peer_ip,
1661 struct dst_entry *dst, struct c4iw_dev *cdev,
1662 bool clear_mpa_v1)
1663{
1664 struct neighbour *n;
1665 int err, step;
1666 struct net_device *pdev;
1667
1668 n = dst_neigh_lookup(dst, peer_ip);
1669 if (!n)
1670 return -ENODEV;
1671
1672 rcu_read_lock();
1673 err = -ENOMEM;
1674 if (n->dev->flags & IFF_LOOPBACK) {
1675 if (iptype == 4)
1676 pdev = ip_dev_find(&init_net, *(__be32 *)peer_ip);
1677 else if (IS_ENABLED(CONFIG_IPV6))
1678 for_each_netdev(&init_net, pdev) {
1679 if (ipv6_chk_addr(&init_net,
1680 (struct in6_addr *)peer_ip,
1681 pdev, 1))
1682 break;
1683 }
1684 else
1685 pdev = NULL;
1686
1687 if (!pdev) {
1688 err = -ENODEV;
1689 goto out;
1690 }
1691 ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t,
1692 n, pdev, 0);
1693 if (!ep->l2t)
1694 goto out;
1695 ep->mtu = pdev->mtu;
1696 ep->tx_chan = cxgb4_port_chan(pdev);
1697 ep->smac_idx = (cxgb4_port_viid(pdev) & 0x7F) << 1;
1698 step = cdev->rdev.lldi.ntxq /
1699 cdev->rdev.lldi.nchan;
1700 ep->txq_idx = cxgb4_port_idx(pdev) * step;
1701 step = cdev->rdev.lldi.nrxq /
1702 cdev->rdev.lldi.nchan;
1703 ep->ctrlq_idx = cxgb4_port_idx(pdev);
1704 ep->rss_qid = cdev->rdev.lldi.rxq_ids[
1705 cxgb4_port_idx(pdev) * step];
1706 dev_put(pdev);
1707 } else {
1708 pdev = get_real_dev(n->dev);
1709 ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t,
1710 n, pdev, 0);
1711 if (!ep->l2t)
1712 goto out;
1713 ep->mtu = dst_mtu(dst);
1714 ep->tx_chan = cxgb4_port_chan(n->dev);
1715 ep->smac_idx = (cxgb4_port_viid(n->dev) & 0x7F) << 1;
1716 step = cdev->rdev.lldi.ntxq /
1717 cdev->rdev.lldi.nchan;
1718 ep->txq_idx = cxgb4_port_idx(n->dev) * step;
1719 ep->ctrlq_idx = cxgb4_port_idx(n->dev);
1720 step = cdev->rdev.lldi.nrxq /
1721 cdev->rdev.lldi.nchan;
1722 ep->rss_qid = cdev->rdev.lldi.rxq_ids[
1723 cxgb4_port_idx(n->dev) * step];
1724
1725 if (clear_mpa_v1) {
1726 ep->retry_with_mpa_v1 = 0;
1727 ep->tried_with_mpa_v1 = 0;
1728 }
1729 }
1730 err = 0;
1731out:
1732 rcu_read_unlock();
1733
1734 neigh_release(n);
1735
1736 return err;
1737}
1738
793dad94
VP		 1739static int c4iw_reconnect(struct c4iw_ep *ep)
1740{
1741 int err = 0;
24d44a39
SW		 1742 struct sockaddr_in *laddr = (struct sockaddr_in *)
1743 &ep->com.cm_id->local_addr;
1744 struct sockaddr_in *raddr = (struct sockaddr_in *)
1745 &ep->com.cm_id->remote_addr;
830662f6
VP		 1746 struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *)
1747 &ep->com.cm_id->local_addr;
1748 struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)
1749 &ep->com.cm_id->remote_addr;
1750 int iptype;
1751 __u8 *ra;
793dad94
VP		 1752
1753 PDBG("%s qp %p cm_id %p\n", __func__, ep->com.qp, ep->com.cm_id);
1754 init_timer(&ep->timer);
1755
1756 /*
1757 * Allocate an active TID to initiate a TCP connection.
1758 */
1759 ep->atid = cxgb4_alloc_atid(ep->com.dev->rdev.lldi.tids, ep);
1760 if (ep->atid == -1) {
1761 pr_err("%s - cannot alloc atid.\n", __func__);
1762 err = -ENOMEM;
1763 goto fail2;
1764 }
1765 insert_handle(ep->com.dev, &ep->com.dev->atid_idr, ep, ep->atid);
1766
1767 /* find a route */
830662f6
VP		 1768 if (ep->com.cm_id->local_addr.ss_family == AF_INET) {
1769 ep->dst = find_route(ep->com.dev, laddr->sin_addr.s_addr,
1770 raddr->sin_addr.s_addr, laddr->sin_port,
1771 raddr->sin_port, 0);
1772 iptype = 4;
1773 ra = (__u8 *)&raddr->sin_addr;
1774 } else {
1775 ep->dst = find_route6(ep->com.dev, laddr6->sin6_addr.s6_addr,
1776 raddr6->sin6_addr.s6_addr,
1777 laddr6->sin6_port, raddr6->sin6_port, 0,
1778 raddr6->sin6_scope_id);
1779 iptype = 6;
1780 ra = (__u8 *)&raddr6->sin6_addr;
1781 }
1782 if (!ep->dst) {
793dad94
VP		 1783 pr_err("%s - cannot find route.\n", __func__);
1784 err = -EHOSTUNREACH;
1785 goto fail3;
1786 }
830662f6
VP		 1787 err = import_ep(ep, iptype, ra, ep->dst, ep->com.dev, false);
1788 if (err) {
793dad94 1789 pr_err("%s - cannot alloc l2e.\n", __func__);
793dad94
VP		 1790 goto fail4;
1791 }
1792
1793 PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n",
1794 __func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid,
1795 ep->l2t->idx);
1796
1797 state_set(&ep->com, CONNECTING);
1798 ep->tos = 0;
1799
1800 /* send connect request to rnic */
1801 err = send_connect(ep);
1802 if (!err)
1803 goto out;
1804
1805 cxgb4_l2t_release(ep->l2t);
1806fail4:
1807 dst_release(ep->dst);
1808fail3:
1809 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid);
1810 cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid);
1811fail2:
1812 /*
1813 * remember to send notification to upper layer.
1814 * We are in here so the upper layer is not aware that this is
1815 * re-connect attempt and so, upper layer is still waiting for
1816 * response of 1st connect request.
1817 */
1818 connect_reply_upcall(ep, -ECONNRESET);
1819 c4iw_put_ep(&ep->com);
1820out:
1821 return err;
1822}
1823
cfdda9d7
SW		 1824static int act_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
1825{
1826 struct c4iw_ep *ep;
1827 struct cpl_act_open_rpl *rpl = cplhdr(skb);
1828 unsigned int atid = GET_TID_TID(GET_AOPEN_ATID(
1829 ntohl(rpl->atid_status)));
1830 struct tid_info *t = dev->rdev.lldi.tids;
1831 int status = GET_AOPEN_STATUS(ntohl(rpl->atid_status));
830662f6
VP		 1832 struct sockaddr_in *la;
1833 struct sockaddr_in *ra;
1834 struct sockaddr_in6 *la6;
1835 struct sockaddr_in6 *ra6;
cfdda9d7
SW		 1836
1837 ep = lookup_atid(t, atid);
830662f6
VP		 1838 la = (struct sockaddr_in *)&ep->com.local_addr;
1839 ra = (struct sockaddr_in *)&ep->com.remote_addr;
1840 la6 = (struct sockaddr_in6 *)&ep->com.local_addr;
1841 ra6 = (struct sockaddr_in6 *)&ep->com.remote_addr;
cfdda9d7
SW		 1842
1843 PDBG("%s ep %p atid %u status %u errno %d\n", __func__, ep, atid,
1844 status, status2errno(status));
1845
1846 if (status == CPL_ERR_RTX_NEG_ADVICE) {
1847 printk(KERN_WARNING MOD "Connection problems for atid %u\n",
1848 atid);
1849 return 0;
1850 }
1851
793dad94
VP		 1852 set_bit(ACT_OPEN_RPL, &ep->com.history);
1853
d716a2a0
VP		 1854 /*
1855 * Log interesting failures.
1856 */
1857 switch (status) {
1858 case CPL_ERR_CONN_RESET:
1859 case CPL_ERR_CONN_TIMEDOUT:
1860 break;
5be78ee9 1861 case CPL_ERR_TCAM_FULL:
830662f6 1862 mutex_lock(&dev->rdev.stats.lock);
3b174d94 1863 dev->rdev.stats.tcam_full++;
830662f6
VP		 1864 mutex_unlock(&dev->rdev.stats.lock);
1865 if (ep->com.local_addr.ss_family == AF_INET &&
1866 dev->rdev.lldi.enable_fw_ofld_conn) {
793dad94
VP		 1867 send_fw_act_open_req(ep,
1868 GET_TID_TID(GET_AOPEN_ATID(
1869 ntohl(rpl->atid_status))));
1870 return 0;
1871 }
1872 break;
1873 case CPL_ERR_CONN_EXIST:
1874 if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) {
1875 set_bit(ACT_RETRY_INUSE, &ep->com.history);
1876 remove_handle(ep->com.dev, &ep->com.dev->atid_idr,
1877 atid);
1878 cxgb4_free_atid(t, atid);
1879 dst_release(ep->dst);
1880 cxgb4_l2t_release(ep->l2t);
1881 c4iw_reconnect(ep);
1882 return 0;
1883 }
5be78ee9 1884 break;
d716a2a0 1885 default:
830662f6
VP		 1886 if (ep->com.local_addr.ss_family == AF_INET) {
1887 pr_info("Active open failure - atid %u status %u errno %d %pI4:%u->%pI4:%u\n",
1888 atid, status, status2errno(status),
1889 &la->sin_addr.s_addr, ntohs(la->sin_port),
1890 &ra->sin_addr.s_addr, ntohs(ra->sin_port));
1891 } else {
1892 pr_info("Active open failure - atid %u status %u errno %d %pI6:%u->%pI6:%u\n",
1893 atid, status, status2errno(status),
1894 la6->sin6_addr.s6_addr, ntohs(la6->sin6_port),
1895 ra6->sin6_addr.s6_addr, ntohs(ra6->sin6_port));
1896 }
d716a2a0
VP		 1897 break;
1898 }
1899
cfdda9d7
SW		 1900 connect_reply_upcall(ep, status2errno(status));
1901 state_set(&ep->com, DEAD);
1902
1903 if (status && act_open_has_tid(status))
1904 cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, GET_TID(rpl));
1905
793dad94 1906 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, atid);
cfdda9d7
SW		 1907 cxgb4_free_atid(t, atid);
1908 dst_release(ep->dst);
1909 cxgb4_l2t_release(ep->l2t);
1910 c4iw_put_ep(&ep->com);
1911
1912 return 0;
1913}
1914
1915static int pass_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
1916{
1917 struct cpl_pass_open_rpl *rpl = cplhdr(skb);
1918 struct tid_info *t = dev->rdev.lldi.tids;
1919 unsigned int stid = GET_TID(rpl);
1920 struct c4iw_listen_ep *ep = lookup_stid(t, stid);
1921
1922 if (!ep) {
1cab775c
VP		 1923 PDBG("%s stid %d lookup failure!\n", __func__, stid);
1924 goto out;
cfdda9d7
SW		 1925 }
1926 PDBG("%s ep %p status %d error %d\n", __func__, ep,
1927 rpl->status, status2errno(rpl->status));
d9594d99 1928 c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status));
cfdda9d7 1929
1cab775c 1930out:
cfdda9d7
SW		 1931 return 0;
1932}
1933
cfdda9d7
SW		 1934static int close_listsrv_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
1935{
1936 struct cpl_close_listsvr_rpl *rpl = cplhdr(skb);
1937 struct tid_info *t = dev->rdev.lldi.tids;
1938 unsigned int stid = GET_TID(rpl);
1939 struct c4iw_listen_ep *ep = lookup_stid(t, stid);
1940
1941 PDBG("%s ep %p\n", __func__, ep);
d9594d99 1942 c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status));
cfdda9d7
SW		 1943 return 0;
1944}
1945
830662f6 1946static void accept_cr(struct c4iw_ep *ep, struct sk_buff *skb,
cfdda9d7
SW		 1947 struct cpl_pass_accept_req *req)
1948{
1949 struct cpl_pass_accept_rpl *rpl;
1950 unsigned int mtu_idx;
1951 u64 opt0;
1952 u32 opt2;
1953 int wscale;
1954
1955 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1956 BUG_ON(skb_cloned(skb));
1957 skb_trim(skb, sizeof(*rpl));
1958 skb_get(skb);
1959 cxgb4_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx);
1960 wscale = compute_wscale(rcv_win);
5be78ee9
VP		 1961 opt0 = (nocong ? NO_CONG(1) : 0) |
1962 KEEP_ALIVE(1) |
ba6d3925 1963 DELACK(1) |
cfdda9d7
SW		 1964 WND_SCALE(wscale) |
1965 MSS_IDX(mtu_idx) |
1966 L2T_IDX(ep->l2t->idx) |
1967 TX_CHAN(ep->tx_chan) |
1968 SMAC_SEL(ep->smac_idx) |
5be78ee9 1969 DSCP(ep->tos >> 2) |
b48f3b9c 1970 ULP_MODE(ULP_MODE_TCPDDP) |
cfdda9d7
SW		 1971 RCV_BUFSIZ(rcv_win>>10);
1972 opt2 = RX_CHANNEL(0) |
1973 RSS_QUEUE_VALID | RSS_QUEUE(ep->rss_qid);
1974
1975 if (enable_tcp_timestamps && req->tcpopt.tstamp)
1976 opt2 |= TSTAMPS_EN(1);
1977 if (enable_tcp_sack && req->tcpopt.sack)
1978 opt2 |= SACK_EN(1);
1979 if (wscale && enable_tcp_window_scaling)
1980 opt2 |= WND_SCALE_EN(1);
5be78ee9
VP		 1981 if (enable_ecn) {
1982 const struct tcphdr *tcph;
1983 u32 hlen = ntohl(req->hdr_len);
1984
1985 tcph = (const void *)(req + 1) + G_ETH_HDR_LEN(hlen) +
1986 G_IP_HDR_LEN(hlen);
1987 if (tcph->ece && tcph->cwr)
1988 opt2 |= CCTRL_ECN(1);
1989 }
cfdda9d7
SW		 1990
1991 rpl = cplhdr(skb);
1992 INIT_TP_WR(rpl, ep->hwtid);
1993 OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL,
1994 ep->hwtid));
1995 rpl->opt0 = cpu_to_be64(opt0);
1996 rpl->opt2 = cpu_to_be32(opt2);
d4f1a5c6 1997 set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx);
b38a0ad8 1998 t4_set_arp_err_handler(skb, NULL, arp_failure_discard);
cfdda9d7
SW		 1999 c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
2000
2001 return;
2002}
2003
830662f6 2004static void reject_cr(struct c4iw_dev *dev, u32 hwtid, struct sk_buff *skb)
cfdda9d7 2005{
830662f6 2006 PDBG("%s c4iw_dev %p tid %u\n", __func__, dev, hwtid);
cfdda9d7
SW		 2007 BUG_ON(skb_cloned(skb));
2008 skb_trim(skb, sizeof(struct cpl_tid_release));
2009 skb_get(skb);
2010 release_tid(&dev->rdev, hwtid, skb);
2011 return;
2012}
2013
830662f6
VP		 2014static void get_4tuple(struct cpl_pass_accept_req *req, int *iptype,
2015 __u8 *local_ip, __u8 *peer_ip,
cfdda9d7
SW		 2016 __be16 *local_port, __be16 *peer_port)
2017{
2018 int eth_len = G_ETH_HDR_LEN(be32_to_cpu(req->hdr_len));
2019 int ip_len = G_IP_HDR_LEN(be32_to_cpu(req->hdr_len));
2020 struct iphdr *ip = (struct iphdr *)((u8 *)(req + 1) + eth_len);
830662f6 2021 struct ipv6hdr *ip6 = (struct ipv6hdr *)((u8 *)(req + 1) + eth_len);
cfdda9d7
SW		 2022 struct tcphdr *tcp = (struct tcphdr *)
2023 ((u8 *)(req + 1) + eth_len + ip_len);
2024
830662f6
VP		 2025 if (ip->version == 4) {
2026 PDBG("%s saddr 0x%x daddr 0x%x sport %u dport %u\n", __func__,
2027 ntohl(ip->saddr), ntohl(ip->daddr), ntohs(tcp->source),
2028 ntohs(tcp->dest));
2029 *iptype = 4;
2030 memcpy(peer_ip, &ip->saddr, 4);
2031 memcpy(local_ip, &ip->daddr, 4);
2032 } else {
2033 PDBG("%s saddr %pI6 daddr %pI6 sport %u dport %u\n", __func__,
2034 ip6->saddr.s6_addr, ip6->daddr.s6_addr, ntohs(tcp->source),
2035 ntohs(tcp->dest));
2036 *iptype = 6;
2037 memcpy(peer_ip, ip6->saddr.s6_addr, 16);
2038 memcpy(local_ip, ip6->daddr.s6_addr, 16);
2039 }
cfdda9d7
SW		 2040 *peer_port = tcp->source;
2041 *local_port = tcp->dest;
2042
2043 return;
2044}
2045
2046static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
2047{
793dad94 2048 struct c4iw_ep *child_ep = NULL, *parent_ep;
cfdda9d7
SW		 2049 struct cpl_pass_accept_req *req = cplhdr(skb);
2050 unsigned int stid = GET_POPEN_TID(ntohl(req->tos_stid));
2051 struct tid_info *t = dev->rdev.lldi.tids;
2052 unsigned int hwtid = GET_TID(req);
2053 struct dst_entry *dst;
830662f6 2054 __u8 local_ip[16], peer_ip[16];
cfdda9d7 2055 __be16 local_port, peer_port;
3786cf18 2056 int err;
1cab775c 2057 u16 peer_mss = ntohs(req->tcpopt.mss);
830662f6 2058 int iptype;
cfdda9d7
SW		 2059
2060 parent_ep = lookup_stid(t, stid);
1cab775c
VP		 2061 if (!parent_ep) {
2062 PDBG("%s connect request on invalid stid %d\n", __func__, stid);
2063 goto reject;
2064 }
1cab775c 2065
cfdda9d7
SW		 2066 if (state_read(&parent_ep->com) != LISTEN) {
2067 printk(KERN_ERR "%s - listening ep not in LISTEN\n",
2068 __func__);
2069 goto reject;
2070 }
2071
830662f6
VP		 2072 get_4tuple(req, &iptype, local_ip, peer_ip, &local_port, &peer_port);
2073
cfdda9d7 2074 /* Find output route */
830662f6
VP		 2075 if (iptype == 4) {
2076 PDBG("%s parent ep %p hwtid %u laddr %pI4 raddr %pI4 lport %d rport %d peer_mss %d\n"
2077 , __func__, parent_ep, hwtid,
2078 local_ip, peer_ip, ntohs(local_port),
2079 ntohs(peer_port), peer_mss);
2080 dst = find_route(dev, *(__be32 *)local_ip, *(__be32 *)peer_ip,
2081 local_port, peer_port,
2082 GET_POPEN_TOS(ntohl(req->tos_stid)));
2083 } else {
2084 PDBG("%s parent ep %p hwtid %u laddr %pI6 raddr %pI6 lport %d rport %d peer_mss %d\n"
2085 , __func__, parent_ep, hwtid,
2086 local_ip, peer_ip, ntohs(local_port),
2087 ntohs(peer_port), peer_mss);
2088 dst = find_route6(dev, local_ip, peer_ip, local_port, peer_port,
2089 PASS_OPEN_TOS(ntohl(req->tos_stid)),
2090 ((struct sockaddr_in6 *)
2091 &parent_ep->com.local_addr)->sin6_scope_id);
2092 }
2093 if (!dst) {
cfdda9d7
SW		 2094 printk(KERN_ERR MOD "%s - failed to find dst entry!\n",
2095 __func__);
2096 goto reject;
2097 }
3786cf18
DM		 2098
2099 child_ep = alloc_ep(sizeof(*child_ep), GFP_KERNEL);
2100 if (!child_ep) {
2101 printk(KERN_ERR MOD "%s - failed to allocate ep entry!\n",
cfdda9d7
SW		 2102 __func__);
2103 dst_release(dst);
2104 goto reject;
2105 }
2106
830662f6 2107 err = import_ep(child_ep, iptype, peer_ip, dst, dev, false);
3786cf18
DM		 2108 if (err) {
2109 printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n",
cfdda9d7 2110 __func__);
cfdda9d7 2111 dst_release(dst);
3786cf18 2112 kfree(child_ep);
cfdda9d7
SW		 2113 goto reject;
2114 }
3786cf18 2115
1cab775c
VP		 2116 if (peer_mss && child_ep->mtu > (peer_mss + 40))
2117 child_ep->mtu = peer_mss + 40;
2118
cfdda9d7
SW		 2119 state_set(&child_ep->com, CONNECTING);
2120 child_ep->com.dev = dev;
2121 child_ep->com.cm_id = NULL;
830662f6
VP		 2122 if (iptype == 4) {
2123 struct sockaddr_in *sin = (struct sockaddr_in *)
2124 &child_ep->com.local_addr;
2125 sin->sin_family = PF_INET;
2126 sin->sin_port = local_port;
2127 sin->sin_addr.s_addr = *(__be32 *)local_ip;
2128 sin = (struct sockaddr_in *)&child_ep->com.remote_addr;
2129 sin->sin_family = PF_INET;
2130 sin->sin_port = peer_port;
2131 sin->sin_addr.s_addr = *(__be32 *)peer_ip;
2132 } else {
2133 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)
2134 &child_ep->com.local_addr;
2135 sin6->sin6_family = PF_INET6;
2136 sin6->sin6_port = local_port;
2137 memcpy(sin6->sin6_addr.s6_addr, local_ip, 16);
2138 sin6 = (struct sockaddr_in6 *)&child_ep->com.remote_addr;
2139 sin6->sin6_family = PF_INET6;
2140 sin6->sin6_port = peer_port;
2141 memcpy(sin6->sin6_addr.s6_addr, peer_ip, 16);
2142 }
cfdda9d7
SW		 2143 c4iw_get_ep(&parent_ep->com);
2144 child_ep->parent_ep = parent_ep;
2145 child_ep->tos = GET_POPEN_TOS(ntohl(req->tos_stid));
cfdda9d7
SW		 2146 child_ep->dst = dst;
2147 child_ep->hwtid = hwtid;
cfdda9d7
SW		 2148
2149 PDBG("%s tx_chan %u smac_idx %u rss_qid %u\n", __func__,
3786cf18 2150 child_ep->tx_chan, child_ep->smac_idx, child_ep->rss_qid);
cfdda9d7
SW		 2151
2152 init_timer(&child_ep->timer);
2153 cxgb4_insert_tid(t, child_ep, hwtid);
b3de6cfe 2154 insert_handle(dev, &dev->hwtid_idr, child_ep, child_ep->hwtid);
830662f6 2155 accept_cr(child_ep, skb, req);
793dad94 2156 set_bit(PASS_ACCEPT_REQ, &child_ep->com.history);
cfdda9d7
SW		 2157 goto out;
2158reject:
830662f6 2159 reject_cr(dev, hwtid, skb);
cfdda9d7
SW		 2160out:
2161 return 0;
2162}
2163
2164static int pass_establish(struct c4iw_dev *dev, struct sk_buff *skb)
2165{
2166 struct c4iw_ep *ep;
2167 struct cpl_pass_establish *req = cplhdr(skb);
2168 struct tid_info *t = dev->rdev.lldi.tids;
2169 unsigned int tid = GET_TID(req);
2170
2171 ep = lookup_tid(t, tid);
2172 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
2173 ep->snd_seq = be32_to_cpu(req->snd_isn);
2174 ep->rcv_seq = be32_to_cpu(req->rcv_isn);
2175
1cab775c
VP		 2176 PDBG("%s ep %p hwtid %u tcp_opt 0x%02x\n", __func__, ep, tid,
2177 ntohs(req->tcp_opt));
2178
cfdda9d7
SW		 2179 set_emss(ep, ntohs(req->tcp_opt));
2180
2181 dst_confirm(ep->dst);
2182 state_set(&ep->com, MPA_REQ_WAIT);
2183 start_ep_timer(ep);
2184 send_flowc(ep, skb);
793dad94 2185 set_bit(PASS_ESTAB, &ep->com.history);
cfdda9d7
SW		 2186
2187 return 0;
2188}
2189
2190static int peer_close(struct c4iw_dev *dev, struct sk_buff *skb)
2191{
2192 struct cpl_peer_close *hdr = cplhdr(skb);
2193 struct c4iw_ep *ep;
2194 struct c4iw_qp_attributes attrs;
cfdda9d7
SW		 2195 int disconnect = 1;
2196 int release = 0;
cfdda9d7
SW		 2197 struct tid_info *t = dev->rdev.lldi.tids;
2198 unsigned int tid = GET_TID(hdr);
8da7e7a5 2199 int ret;
cfdda9d7
SW		 2200
2201 ep = lookup_tid(t, tid);
2202 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
2203 dst_confirm(ep->dst);
2204
793dad94 2205 set_bit(PEER_CLOSE, &ep->com.history);
2f5b48c3 2206 mutex_lock(&ep->com.mutex);
cfdda9d7
SW		 2207 switch (ep->com.state) {
2208 case MPA_REQ_WAIT:
2209 __state_set(&ep->com, CLOSING);
2210 break;
2211 case MPA_REQ_SENT:
2212 __state_set(&ep->com, CLOSING);
2213 connect_reply_upcall(ep, -ECONNRESET);
2214 break;
2215 case MPA_REQ_RCVD:
2216
2217 /*
2218 * We're gonna mark this puppy DEAD, but keep
2219 * the reference on it until the ULP accepts or
2220 * rejects the CR. Also wake up anyone waiting
2221 * in rdma connection migration (see c4iw_accept_cr()).
2222 */
2223 __state_set(&ep->com, CLOSING);
cfdda9d7 2224 PDBG("waking up ep %p tid %u\n", ep, ep->hwtid);
d9594d99 2225 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
cfdda9d7
SW		 2226 break;
2227 case MPA_REP_SENT:
2228 __state_set(&ep->com, CLOSING);
cfdda9d7 2229 PDBG("waking up ep %p tid %u\n", ep, ep->hwtid);
d9594d99 2230 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
cfdda9d7
SW		 2231 break;
2232 case FPDU_MODE:
ca5a2202 2233 start_ep_timer(ep);
cfdda9d7 2234 __state_set(&ep->com, CLOSING);
30c95c2d 2235 attrs.next_state = C4IW_QP_STATE_CLOSING;
8da7e7a5 2236 ret = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
30c95c2d 2237 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
8da7e7a5
SW		 2238 if (ret != -ECONNRESET) {
2239 peer_close_upcall(ep);
2240 disconnect = 1;
2241 }
cfdda9d7
SW		 2242 break;
2243 case ABORTING:
2244 disconnect = 0;
2245 break;
2246 case CLOSING:
2247 __state_set(&ep->com, MORIBUND);
2248 disconnect = 0;
2249 break;
2250 case MORIBUND:
ca5a2202 2251 stop_ep_timer(ep);
cfdda9d7
SW		 2252 if (ep->com.cm_id && ep->com.qp) {
2253 attrs.next_state = C4IW_QP_STATE_IDLE;
2254 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
2255 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
2256 }
be13b2df 2257 close_complete_upcall(ep, 0);
cfdda9d7
SW		 2258 __state_set(&ep->com, DEAD);
2259 release = 1;
2260 disconnect = 0;
2261 break;
2262 case DEAD:
2263 disconnect = 0;
2264 break;
2265 default:
2266 BUG_ON(1);
2267 }
2f5b48c3 2268 mutex_unlock(&ep->com.mutex);
cfdda9d7
SW		 2269 if (disconnect)
2270 c4iw_ep_disconnect(ep, 0, GFP_KERNEL);
2271 if (release)
2272 release_ep_resources(ep);
2273 return 0;
2274}
2275
2276/*
2277 * Returns whether an ABORT_REQ_RSS message is a negative advice.
2278 */
2279static int is_neg_adv_abort(unsigned int status)
2280{
2281 return status == CPL_ERR_RTX_NEG_ADVICE ||
2282 status == CPL_ERR_PERSIST_NEG_ADVICE;
2283}
2284
2285static int peer_abort(struct c4iw_dev *dev, struct sk_buff *skb)
2286{
2287 struct cpl_abort_req_rss *req = cplhdr(skb);
2288 struct c4iw_ep *ep;
2289 struct cpl_abort_rpl *rpl;
2290 struct sk_buff *rpl_skb;
2291 struct c4iw_qp_attributes attrs;
2292 int ret;
2293 int release = 0;
cfdda9d7
SW		 2294 struct tid_info *t = dev->rdev.lldi.tids;
2295 unsigned int tid = GET_TID(req);
cfdda9d7
SW		 2296
2297 ep = lookup_tid(t, tid);
2298 if (is_neg_adv_abort(req->status)) {
2299 PDBG("%s neg_adv_abort ep %p tid %u\n", __func__, ep,
2300 ep->hwtid);
2301 return 0;
2302 }
cfdda9d7
SW		 2303 PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid,
2304 ep->com.state);
793dad94 2305 set_bit(PEER_ABORT, &ep->com.history);
2f5b48c3
SW		 2306
2307 /*
2308 * Wake up any threads in rdma_init() or rdma_fini().
d2fe99e8
KS		 2309 * However, this is not needed if com state is just
2310 * MPA_REQ_SENT
2f5b48c3 2311 */
d2fe99e8
KS		 2312 if (ep->com.state != MPA_REQ_SENT)
2313 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
2f5b48c3
SW		 2314
2315 mutex_lock(&ep->com.mutex);
cfdda9d7
SW		 2316 switch (ep->com.state) {
2317 case CONNECTING:
2318 break;
2319 case MPA_REQ_WAIT:
ca5a2202 2320 stop_ep_timer(ep);
cfdda9d7
SW		 2321 break;
2322 case MPA_REQ_SENT:
ca5a2202 2323 stop_ep_timer(ep);
fe7e0a4d 2324 if (mpa_rev == 1 || (mpa_rev == 2 && ep->tried_with_mpa_v1))
d2fe99e8
KS		 2325 connect_reply_upcall(ep, -ECONNRESET);
2326 else {
2327 /*
2328 * we just don't send notification upwards because we
2329 * want to retry with mpa_v1 without upper layers even
2330 * knowing it.
2331 *
2332 * do some housekeeping so as to re-initiate the
2333 * connection
2334 */
2335 PDBG("%s: mpa_rev=%d. Retrying with mpav1\n", __func__,
2336 mpa_rev);
2337 ep->retry_with_mpa_v1 = 1;
2338 }
cfdda9d7
SW		 2339 break;
2340 case MPA_REP_SENT:
cfdda9d7
SW		 2341 break;
2342 case MPA_REQ_RCVD:
cfdda9d7
SW		 2343 break;
2344 case MORIBUND:
2345 case CLOSING:
ca5a2202 2346 stop_ep_timer(ep);
cfdda9d7
SW		 2347 /*FALLTHROUGH*/
2348 case FPDU_MODE:
2349 if (ep->com.cm_id && ep->com.qp) {
2350 attrs.next_state = C4IW_QP_STATE_ERROR;
2351 ret = c4iw_modify_qp(ep->com.qp->rhp,
2352 ep->com.qp, C4IW_QP_ATTR_NEXT_STATE,
2353 &attrs, 1);
2354 if (ret)
2355 printk(KERN_ERR MOD
2356 "%s - qp <- error failed!\n",
2357 __func__);
2358 }
2359 peer_abort_upcall(ep);
2360 break;
2361 case ABORTING:
2362 break;
2363 case DEAD:
2364 PDBG("%s PEER_ABORT IN DEAD STATE!!!!\n", __func__);
2f5b48c3 2365 mutex_unlock(&ep->com.mutex);
cfdda9d7
SW		 2366 return 0;
2367 default:
2368 BUG_ON(1);
2369 break;
2370 }
2371 dst_confirm(ep->dst);
2372 if (ep->com.state != ABORTING) {
2373 __state_set(&ep->com, DEAD);
d2fe99e8
KS		 2374 /* we don't release if we want to retry with mpa_v1 */
2375 if (!ep->retry_with_mpa_v1)
2376 release = 1;
cfdda9d7 2377 }
2f5b48c3 2378 mutex_unlock(&ep->com.mutex);
cfdda9d7
SW		 2379
2380 rpl_skb = get_skb(skb, sizeof(*rpl), GFP_KERNEL);
2381 if (!rpl_skb) {
2382 printk(KERN_ERR MOD "%s - cannot allocate skb!\n",
2383 __func__);
2384 release = 1;
2385 goto out;
2386 }
2387 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
2388 rpl = (struct cpl_abort_rpl *) skb_put(rpl_skb, sizeof(*rpl));
2389 INIT_TP_WR(rpl, ep->hwtid);
2390 OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_RPL, ep->hwtid));
2391 rpl->cmd = CPL_ABORT_NO_RST;
2392 c4iw_ofld_send(&ep->com.dev->rdev, rpl_skb);
2393out:
cfdda9d7
SW		 2394 if (release)
2395 release_ep_resources(ep);
fe7e0a4d
VP		 2396 else if (ep->retry_with_mpa_v1) {
2397 remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid);
d2fe99e8
KS		 2398 cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid);
2399 dst_release(ep->dst);
2400 cxgb4_l2t_release(ep->l2t);
2401 c4iw_reconnect(ep);
2402 }
2403
cfdda9d7
SW		 2404 return 0;
2405}
2406
2407static int close_con_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
2408{
2409 struct c4iw_ep *ep;
2410 struct c4iw_qp_attributes attrs;
2411 struct cpl_close_con_rpl *rpl = cplhdr(skb);
cfdda9d7
SW		 2412 int release = 0;
2413 struct tid_info *t = dev->rdev.lldi.tids;
2414 unsigned int tid = GET_TID(rpl);
cfdda9d7
SW		 2415
2416 ep = lookup_tid(t, tid);
2417
2418 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
2419 BUG_ON(!ep);
2420
2421 /* The cm_id may be null if we failed to connect */
2f5b48c3 2422 mutex_lock(&ep->com.mutex);
cfdda9d7
SW		 2423 switch (ep->com.state) {
2424 case CLOSING:
2425 __state_set(&ep->com, MORIBUND);
2426 break;
2427 case MORIBUND:
ca5a2202 2428 stop_ep_timer(ep);
cfdda9d7
SW		 2429 if ((ep->com.cm_id) && (ep->com.qp)) {
2430 attrs.next_state = C4IW_QP_STATE_IDLE;
2431 c4iw_modify_qp(ep->com.qp->rhp,
2432 ep->com.qp,
2433 C4IW_QP_ATTR_NEXT_STATE,
2434 &attrs, 1);
2435 }
be13b2df 2436 close_complete_upcall(ep, 0);
cfdda9d7
SW		 2437 __state_set(&ep->com, DEAD);
2438 release = 1;
2439 break;
2440 case ABORTING:
2441 case DEAD:
2442 break;
2443 default:
2444 BUG_ON(1);
2445 break;
2446 }
2f5b48c3 2447 mutex_unlock(&ep->com.mutex);
cfdda9d7
SW		 2448 if (release)
2449 release_ep_resources(ep);
2450 return 0;
2451}
2452
2453static int terminate(struct c4iw_dev *dev, struct sk_buff *skb)
2454{
0e42c1f4 2455 struct cpl_rdma_terminate *rpl = cplhdr(skb);
cfdda9d7 2456 struct tid_info *t = dev->rdev.lldi.tids;
0e42c1f4
SW		 2457 unsigned int tid = GET_TID(rpl);
2458 struct c4iw_ep *ep;
2459 struct c4iw_qp_attributes attrs;
cfdda9d7
SW		 2460
2461 ep = lookup_tid(t, tid);
0e42c1f4 2462 BUG_ON(!ep);
cfdda9d7 2463
30c95c2d 2464 if (ep && ep->com.qp) {
0e42c1f4
SW		 2465 printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", tid,
2466 ep->com.qp->wq.sq.qid);
2467 attrs.next_state = C4IW_QP_STATE_TERMINATE;
2468 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
2469 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
2470 } else
30c95c2d 2471 printk(KERN_WARNING MOD "TERM received tid %u no ep/qp\n", tid);
cfdda9d7 2472
cfdda9d7
SW		 2473 return 0;
2474}
2475
2476/*
2477 * Upcall from the adapter indicating data has been transmitted.
2478 * For us its just the single MPA request or reply. We can now free
2479 * the skb holding the mpa message.
2480 */
2481static int fw4_ack(struct c4iw_dev *dev, struct sk_buff *skb)
2482{
2483 struct c4iw_ep *ep;
2484 struct cpl_fw4_ack *hdr = cplhdr(skb);
2485 u8 credits = hdr->credits;
2486 unsigned int tid = GET_TID(hdr);
2487 struct tid_info *t = dev->rdev.lldi.tids;
2488
2489
2490 ep = lookup_tid(t, tid);
2491 PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits);
2492 if (credits == 0) {
aa1ad260
JP		 2493 PDBG("%s 0 credit ack ep %p tid %u state %u\n",
2494 __func__, ep, ep->hwtid, state_read(&ep->com));
cfdda9d7
SW		 2495 return 0;
2496 }
2497
2498 dst_confirm(ep->dst);
2499 if (ep->mpa_skb) {
2500 PDBG("%s last streaming msg ack ep %p tid %u state %u "
2501 "initiator %u freeing skb\n", __func__, ep, ep->hwtid,
2502 state_read(&ep->com), ep->mpa_attr.initiator ? 1 : 0);
2503 kfree_skb(ep->mpa_skb);
2504 ep->mpa_skb = NULL;
2505 }
2506 return 0;
2507}
2508
cfdda9d7
SW		 2509int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
2510{
2511 int err;
2512 struct c4iw_ep *ep = to_ep(cm_id);
2513 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
2514
2515 if (state_read(&ep->com) == DEAD) {
2516 c4iw_put_ep(&ep->com);
2517 return -ECONNRESET;
2518 }
793dad94 2519 set_bit(ULP_REJECT, &ep->com.history);
cfdda9d7
SW		 2520 BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD);
2521 if (mpa_rev == 0)
2522 abort_connection(ep, NULL, GFP_KERNEL);
2523 else {
2524 err = send_mpa_reject(ep, pdata, pdata_len);
2525 err = c4iw_ep_disconnect(ep, 0, GFP_KERNEL);
2526 }
2527 c4iw_put_ep(&ep->com);
2528 return 0;
2529}
2530
2531int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
2532{
2533 int err;
2534 struct c4iw_qp_attributes attrs;
2535 enum c4iw_qp_attr_mask mask;
2536 struct c4iw_ep *ep = to_ep(cm_id);
2537 struct c4iw_dev *h = to_c4iw_dev(cm_id->device);
2538 struct c4iw_qp *qp = get_qhp(h, conn_param->qpn);
2539
2540 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
2541 if (state_read(&ep->com) == DEAD) {
2542 err = -ECONNRESET;
2543 goto err;
2544 }
2545
2546 BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD);
2547 BUG_ON(!qp);
2548
793dad94 2549 set_bit(ULP_ACCEPT, &ep->com.history);
be4c9bad
RD		 2550 if ((conn_param->ord > c4iw_max_read_depth) ||
2551 (conn_param->ird > c4iw_max_read_depth)) {
cfdda9d7
SW		 2552 abort_connection(ep, NULL, GFP_KERNEL);
2553 err = -EINVAL;
2554 goto err;
2555 }
2556
d2fe99e8
KS		 2557 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
2558 if (conn_param->ord > ep->ird) {
2559 ep->ird = conn_param->ird;
2560 ep->ord = conn_param->ord;
2561 send_mpa_reject(ep, conn_param->private_data,
2562 conn_param->private_data_len);
2563 abort_connection(ep, NULL, GFP_KERNEL);
2564 err = -ENOMEM;
2565 goto err;
2566 }
2567 if (conn_param->ird > ep->ord) {
2568 if (!ep->ord)
2569 conn_param->ird = 1;
2570 else {
2571 abort_connection(ep, NULL, GFP_KERNEL);
2572 err = -ENOMEM;
2573 goto err;
2574 }
2575 }
cfdda9d7 2576
d2fe99e8 2577 }
cfdda9d7
SW		 2578 ep->ird = conn_param->ird;
2579 ep->ord = conn_param->ord;
2580
d2fe99e8
KS		 2581 if (ep->mpa_attr.version != 2)
2582 if (peer2peer && ep->ird == 0)
2583 ep->ird = 1;
cfdda9d7
SW		 2584
2585 PDBG("%s %d ird %d ord %d\n", __func__, __LINE__, ep->ird, ep->ord);
2586
d2fe99e8
KS		 2587 cm_id->add_ref(cm_id);
2588 ep->com.cm_id = cm_id;
2589 ep->com.qp = qp;
325abead 2590 ref_qp(ep);
d2fe99e8 2591
cfdda9d7
SW		 2592 /* bind QP to EP and move to RTS */
2593 attrs.mpa_attr = ep->mpa_attr;
2594 attrs.max_ird = ep->ird;
2595 attrs.max_ord = ep->ord;
2596 attrs.llp_stream_handle = ep;
2597 attrs.next_state = C4IW_QP_STATE_RTS;
2598
2599 /* bind QP and TID with INIT_WR */
2600 mask = C4IW_QP_ATTR_NEXT_STATE |
2601 C4IW_QP_ATTR_LLP_STREAM_HANDLE |
2602 C4IW_QP_ATTR_MPA_ATTR |
2603 C4IW_QP_ATTR_MAX_IRD |
2604 C4IW_QP_ATTR_MAX_ORD;
2605
2606 err = c4iw_modify_qp(ep->com.qp->rhp,
2607 ep->com.qp, mask, &attrs, 1);
2608 if (err)
2609 goto err1;
2610 err = send_mpa_reply(ep, conn_param->private_data,
2611 conn_param->private_data_len);
2612 if (err)
2613 goto err1;
2614
2615 state_set(&ep->com, FPDU_MODE);
2616 established_upcall(ep);
2617 c4iw_put_ep(&ep->com);
2618 return 0;
2619err1:
2620 ep->com.cm_id = NULL;
cfdda9d7
SW		 2621 cm_id->rem_ref(cm_id);
2622err:
2623 c4iw_put_ep(&ep->com);
2624 return err;
2625}
2626
830662f6
VP		 2627static int pick_local_ipaddrs(struct c4iw_dev *dev, struct iw_cm_id *cm_id)
2628{
2629 struct in_device *ind;
2630 int found = 0;
2631 struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr;
2632 struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr;
2633
2634 ind = in_dev_get(dev->rdev.lldi.ports[0]);
2635 if (!ind)
2636 return -EADDRNOTAVAIL;
2637 for_primary_ifa(ind) {
2638 laddr->sin_addr.s_addr = ifa->ifa_address;
2639 raddr->sin_addr.s_addr = ifa->ifa_address;
2640 found = 1;
2641 break;
2642 }
2643 endfor_ifa(ind);
2644 in_dev_put(ind);
2645 return found ? 0 : -EADDRNOTAVAIL;
2646}
2647
2648static int get_lladdr(struct net_device *dev, struct in6_addr *addr,
2649 unsigned char banned_flags)
2650{
2651 struct inet6_dev *idev;
2652 int err = -EADDRNOTAVAIL;
2653
2654 rcu_read_lock();
2655 idev = __in6_dev_get(dev);
2656 if (idev != NULL) {
2657 struct inet6_ifaddr *ifp;
2658
2659 read_lock_bh(&idev->lock);
2660 list_for_each_entry(ifp, &idev->addr_list, if_list) {
2661 if (ifp->scope == IFA_LINK &&
2662 !(ifp->flags & banned_flags)) {
2663 memcpy(addr, &ifp->addr, 16);
2664 err = 0;
2665 break;
2666 }
2667 }
2668 read_unlock_bh(&idev->lock);
2669 }
2670 rcu_read_unlock();
2671 return err;
2672}
2673
2674static int pick_local_ip6addrs(struct c4iw_dev *dev, struct iw_cm_id *cm_id)
2675{
2676 struct in6_addr uninitialized_var(addr);
2677 struct sockaddr_in6 *la6 = (struct sockaddr_in6 *)&cm_id->local_addr;
2678 struct sockaddr_in6 *ra6 = (struct sockaddr_in6 *)&cm_id->remote_addr;
2679
2680 if (get_lladdr(dev->rdev.lldi.ports[0], &addr, IFA_F_TENTATIVE)) {
2681 memcpy(la6->sin6_addr.s6_addr, &addr, 16);
2682 memcpy(ra6->sin6_addr.s6_addr, &addr, 16);
2683 return 0;
2684 }
2685 return -EADDRNOTAVAIL;
2686}
2687
cfdda9d7
SW		 2688int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
2689{
cfdda9d7
SW		 2690 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device);
2691 struct c4iw_ep *ep;
3786cf18 2692 int err = 0;
24d44a39
SW		 2693 struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr;
2694 struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr;
830662f6
VP		 2695 struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *)&cm_id->local_addr;
2696 struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)
2697 &cm_id->remote_addr;
2698 __u8 *ra;
2699 int iptype;
cfdda9d7 2700
be4c9bad
RD		 2701 if ((conn_param->ord > c4iw_max_read_depth) ||
2702 (conn_param->ird > c4iw_max_read_depth)) {
2703 err = -EINVAL;
2704 goto out;
2705 }
cfdda9d7
SW		 2706 ep = alloc_ep(sizeof(*ep), GFP_KERNEL);
2707 if (!ep) {
2708 printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__);
2709 err = -ENOMEM;
2710 goto out;
2711 }
2712 init_timer(&ep->timer);
2713 ep->plen = conn_param->private_data_len;
2714 if (ep->plen)
2715 memcpy(ep->mpa_pkt + sizeof(struct mpa_message),
2716 conn_param->private_data, ep->plen);
2717 ep->ird = conn_param->ird;
2718 ep->ord = conn_param->ord;
2719
2720 if (peer2peer && ep->ord == 0)
2721 ep->ord = 1;
2722
2723 cm_id->add_ref(cm_id);
2724 ep->com.dev = dev;
2725 ep->com.cm_id = cm_id;
2726 ep->com.qp = get_qhp(dev, conn_param->qpn);
830662f6
VP		 2727 if (!ep->com.qp) {
2728 PDBG("%s qpn 0x%x not found!\n", __func__, conn_param->qpn);
2729 err = -EINVAL;
2730 goto fail2;
2731 }
325abead 2732 ref_qp(ep);
cfdda9d7
SW		 2733 PDBG("%s qpn 0x%x qp %p cm_id %p\n", __func__, conn_param->qpn,
2734 ep->com.qp, cm_id);
2735
2736 /*
2737 * Allocate an active TID to initiate a TCP connection.
2738 */
2739 ep->atid = cxgb4_alloc_atid(dev->rdev.lldi.tids, ep);
2740 if (ep->atid == -1) {
2741 printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __func__);
2742 err = -ENOMEM;
2743 goto fail2;
2744 }
793dad94 2745 insert_handle(dev, &dev->atid_idr, ep, ep->atid);
cfdda9d7 2746
830662f6
VP		 2747 if (cm_id->remote_addr.ss_family == AF_INET) {
2748 iptype = 4;
2749 ra = (__u8 *)&raddr->sin_addr;
cfdda9d7 2750
830662f6
VP		 2751 /*
2752 * Handle loopback requests to INADDR_ANY.
2753 */
2754 if ((__force int)raddr->sin_addr.s_addr == INADDR_ANY) {
2755 err = pick_local_ipaddrs(dev, cm_id);
2756 if (err)
2757 goto fail2;
2758 }
2759
2760 /* find a route */
2761 PDBG("%s saddr %pI4 sport 0x%x raddr %pI4 rport 0x%x\n",
2762 __func__, &laddr->sin_addr, ntohs(laddr->sin_port),
2763 ra, ntohs(raddr->sin_port));
2764 ep->dst = find_route(dev, laddr->sin_addr.s_addr,
2765 raddr->sin_addr.s_addr, laddr->sin_port,
2766 raddr->sin_port, 0);
2767 } else {
2768 iptype = 6;
2769 ra = (__u8 *)&raddr6->sin6_addr;
2770
2771 /*
2772 * Handle loopback requests to INADDR_ANY.
2773 */
2774 if (ipv6_addr_type(&raddr6->sin6_addr) == IPV6_ADDR_ANY) {
2775 err = pick_local_ip6addrs(dev, cm_id);
2776 if (err)
2777 goto fail2;
2778 }
2779
2780 /* find a route */
2781 PDBG("%s saddr %pI6 sport 0x%x raddr %pI6 rport 0x%x\n",
2782 __func__, laddr6->sin6_addr.s6_addr,
2783 ntohs(laddr6->sin6_port),
2784 raddr6->sin6_addr.s6_addr, ntohs(raddr6->sin6_port));
2785 ep->dst = find_route6(dev, laddr6->sin6_addr.s6_addr,
2786 raddr6->sin6_addr.s6_addr,
2787 laddr6->sin6_port, raddr6->sin6_port, 0,
2788 raddr6->sin6_scope_id);
2789 }
2790 if (!ep->dst) {
cfdda9d7
SW		 2791 printk(KERN_ERR MOD "%s - cannot find route.\n", __func__);
2792 err = -EHOSTUNREACH;
2793 goto fail3;
2794 }
cfdda9d7 2795
830662f6 2796 err = import_ep(ep, iptype, ra, ep->dst, ep->com.dev, true);
3786cf18 2797 if (err) {
cfdda9d7 2798 printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__);
cfdda9d7
SW		 2799 goto fail4;
2800 }
2801
2802 PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n",
2803 __func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid,
2804 ep->l2t->idx);
2805
2806 state_set(&ep->com, CONNECTING);
2807 ep->tos = 0;
24d44a39
SW		 2808 memcpy(&ep->com.local_addr, &cm_id->local_addr,
2809 sizeof(ep->com.local_addr));
2810 memcpy(&ep->com.remote_addr, &cm_id->remote_addr,
2811 sizeof(ep->com.remote_addr));
cfdda9d7
SW		 2812
2813 /* send connect request to rnic */
2814 err = send_connect(ep);
2815 if (!err)
2816 goto out;
2817
2818 cxgb4_l2t_release(ep->l2t);
2819fail4:
2820 dst_release(ep->dst);
2821fail3:
793dad94 2822 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid);
cfdda9d7
SW		 2823 cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid);
2824fail2:
2825 cm_id->rem_ref(cm_id);
2826 c4iw_put_ep(&ep->com);
2827out:
2828 return err;
2829}
2830
830662f6
VP		 2831static int create_server6(struct c4iw_dev *dev, struct c4iw_listen_ep *ep)
2832{
2833 int err;
2834 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&ep->com.local_addr;
2835
2836 c4iw_init_wr_wait(&ep->com.wr_wait);
2837 err = cxgb4_create_server6(ep->com.dev->rdev.lldi.ports[0],
2838 ep->stid, &sin6->sin6_addr,
2839 sin6->sin6_port,
2840 ep->com.dev->rdev.lldi.rxq_ids[0]);
2841 if (!err)
2842 err = c4iw_wait_for_reply(&ep->com.dev->rdev,
2843 &ep->com.wr_wait,
2844 0, 0, __func__);
2845 if (err)
2846 pr_err("cxgb4_create_server6/filter failed err %d stid %d laddr %pI6 lport %d\n",
2847 err, ep->stid,
2848 sin6->sin6_addr.s6_addr, ntohs(sin6->sin6_port));
2849 return err;
2850}
2851
2852static int create_server4(struct c4iw_dev *dev, struct c4iw_listen_ep *ep)
2853{
2854 int err;
2855 struct sockaddr_in *sin = (struct sockaddr_in *)&ep->com.local_addr;
2856
2857 if (dev->rdev.lldi.enable_fw_ofld_conn) {
2858 do {
2859 err = cxgb4_create_server_filter(
2860 ep->com.dev->rdev.lldi.ports[0], ep->stid,
2861 sin->sin_addr.s_addr, sin->sin_port, 0,
2862 ep->com.dev->rdev.lldi.rxq_ids[0], 0, 0);
2863 if (err == -EBUSY) {
2864 set_current_state(TASK_UNINTERRUPTIBLE);
2865 schedule_timeout(usecs_to_jiffies(100));
2866 }
2867 } while (err == -EBUSY);
2868 } else {
2869 c4iw_init_wr_wait(&ep->com.wr_wait);
2870 err = cxgb4_create_server(ep->com.dev->rdev.lldi.ports[0],
2871 ep->stid, sin->sin_addr.s_addr, sin->sin_port,
2872 0, ep->com.dev->rdev.lldi.rxq_ids[0]);
2873 if (!err)
2874 err = c4iw_wait_for_reply(&ep->com.dev->rdev,
2875 &ep->com.wr_wait,
2876 0, 0, __func__);
2877 }
2878 if (err)
2879 pr_err("cxgb4_create_server/filter failed err %d stid %d laddr %pI4 lport %d\n"
2880 , err, ep->stid,
2881 &sin->sin_addr, ntohs(sin->sin_port));
2882 return err;
2883}
2884
cfdda9d7
SW		 2885int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog)
2886{
2887 int err = 0;
2888 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device);
2889 struct c4iw_listen_ep *ep;
2890
cfdda9d7
SW		 2891 might_sleep();
2892
2893 ep = alloc_ep(sizeof(*ep), GFP_KERNEL);
2894 if (!ep) {
2895 printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__);
2896 err = -ENOMEM;
2897 goto fail1;
2898 }
2899 PDBG("%s ep %p\n", __func__, ep);
2900 cm_id->add_ref(cm_id);
2901 ep->com.cm_id = cm_id;
2902 ep->com.dev = dev;
2903 ep->backlog = backlog;
24d44a39
SW		 2904 memcpy(&ep->com.local_addr, &cm_id->local_addr,
2905 sizeof(ep->com.local_addr));
cfdda9d7
SW		 2906
2907 /*
2908 * Allocate a server TID.
2909 */
8c044690
KS		 2910 if (dev->rdev.lldi.enable_fw_ofld_conn &&
2911 ep->com.local_addr.ss_family == AF_INET)
830662f6
VP		 2912 ep->stid = cxgb4_alloc_sftid(dev->rdev.lldi.tids,
2913 cm_id->local_addr.ss_family, ep);
1cab775c 2914 else
830662f6
VP		 2915 ep->stid = cxgb4_alloc_stid(dev->rdev.lldi.tids,
2916 cm_id->local_addr.ss_family, ep);
1cab775c 2917
cfdda9d7 2918 if (ep->stid == -1) {
be4c9bad 2919 printk(KERN_ERR MOD "%s - cannot alloc stid.\n", __func__);
cfdda9d7
SW		 2920 err = -ENOMEM;
2921 goto fail2;
2922 }
793dad94 2923 insert_handle(dev, &dev->stid_idr, ep, ep->stid);
cfdda9d7 2924 state_set(&ep->com, LISTEN);
830662f6
VP		 2925 if (ep->com.local_addr.ss_family == AF_INET)
2926 err = create_server4(dev, ep);
2927 else
2928 err = create_server6(dev, ep);
cfdda9d7
SW		 2929 if (!err) {
2930 cm_id->provider_data = ep;
2931 goto out;
2932 }
830662f6
VP		 2933 cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid,
2934 ep->com.local_addr.ss_family);
cfdda9d7
SW		 2935fail2:
2936 cm_id->rem_ref(cm_id);
2937 c4iw_put_ep(&ep->com);
2938fail1:
2939out:
2940 return err;
2941}
2942
2943int c4iw_destroy_listen(struct iw_cm_id *cm_id)
2944{
2945 int err;
2946 struct c4iw_listen_ep *ep = to_listen_ep(cm_id);
2947
2948 PDBG("%s ep %p\n", __func__, ep);
2949
2950 might_sleep();
2951 state_set(&ep->com, DEAD);
830662f6
VP		 2952 if (ep->com.dev->rdev.lldi.enable_fw_ofld_conn &&
2953 ep->com.local_addr.ss_family == AF_INET) {
1cab775c
VP		 2954 err = cxgb4_remove_server_filter(
2955 ep->com.dev->rdev.lldi.ports[0], ep->stid,
2956 ep->com.dev->rdev.lldi.rxq_ids[0], 0);
2957 } else {
2958 c4iw_init_wr_wait(&ep->com.wr_wait);
830662f6
VP		 2959 err = cxgb4_remove_server(
2960 ep->com.dev->rdev.lldi.ports[0], ep->stid,
2961 ep->com.dev->rdev.lldi.rxq_ids[0], 0);
1cab775c
VP		 2962 if (err)
2963 goto done;
2964 err = c4iw_wait_for_reply(&ep->com.dev->rdev, &ep->com.wr_wait,
2965 0, 0, __func__);
2966 }
793dad94 2967 remove_handle(ep->com.dev, &ep->com.dev->stid_idr, ep->stid);
830662f6
VP		 2968 cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid,
2969 ep->com.local_addr.ss_family);
cfdda9d7 2970done:
cfdda9d7
SW		 2971 cm_id->rem_ref(cm_id);
2972 c4iw_put_ep(&ep->com);
2973 return err;
2974}
2975
2976int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp)
2977{
2978 int ret = 0;
cfdda9d7
SW		 2979 int close = 0;
2980 int fatal = 0;
2981 struct c4iw_rdev *rdev;
cfdda9d7 2982
2f5b48c3 2983 mutex_lock(&ep->com.mutex);
cfdda9d7
SW		 2984
2985 PDBG("%s ep %p state %s, abrupt %d\n", __func__, ep,
2986 states[ep->com.state], abrupt);
2987
2988 rdev = &ep->com.dev->rdev;
2989 if (c4iw_fatal_error(rdev)) {
2990 fatal = 1;
be13b2df 2991 close_complete_upcall(ep, -EIO);
cfdda9d7
SW		 2992 ep->com.state = DEAD;
2993 }
2994 switch (ep->com.state) {
2995 case MPA_REQ_WAIT:
2996 case MPA_REQ_SENT:
2997 case MPA_REQ_RCVD:
2998 case MPA_REP_SENT:
2999 case FPDU_MODE:
3000 close = 1;
3001 if (abrupt)
3002 ep->com.state = ABORTING;
3003 else {
3004 ep->com.state = CLOSING;
ca5a2202 3005 start_ep_timer(ep);
cfdda9d7
SW		 3006 }
3007 set_bit(CLOSE_SENT, &ep->com.flags);
3008 break;
3009 case CLOSING:
3010 if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) {
3011 close = 1;
3012 if (abrupt) {
ca5a2202 3013 stop_ep_timer(ep);
cfdda9d7
SW		 3014 ep->com.state = ABORTING;
3015 } else
3016 ep->com.state = MORIBUND;
3017 }
3018 break;
3019 case MORIBUND:
3020 case ABORTING:
3021 case DEAD:
3022 PDBG("%s ignoring disconnect ep %p state %u\n",
3023 __func__, ep, ep->com.state);
3024 break;
3025 default:
3026 BUG();
3027 break;
3028 }
3029
cfdda9d7 3030 if (close) {
8da7e7a5 3031 if (abrupt) {
793dad94 3032 set_bit(EP_DISC_ABORT, &ep->com.history);
be13b2df 3033 close_complete_upcall(ep, -ECONNRESET);
8da7e7a5 3034 ret = send_abort(ep, NULL, gfp);
793dad94
VP		 3035 } else {
3036 set_bit(EP_DISC_CLOSE, &ep->com.history);
cfdda9d7 3037 ret = send_halfclose(ep, gfp);
793dad94 3038 }
cfdda9d7
SW		 3039 if (ret)
3040 fatal = 1;
3041 }
8da7e7a5 3042 mutex_unlock(&ep->com.mutex);
cfdda9d7
SW		 3043 if (fatal)
3044 release_ep_resources(ep);
3045 return ret;
3046}
3047
1cab775c
VP		 3048static void active_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb,
3049 struct cpl_fw6_msg_ofld_connection_wr_rpl *req)
3050{
3051 struct c4iw_ep *ep;
793dad94 3052 int atid = be32_to_cpu(req->tid);
1cab775c 3053
ef5d6355
VP		 3054 ep = (struct c4iw_ep *)lookup_atid(dev->rdev.lldi.tids,
3055 (__force u32) req->tid);
1cab775c
VP		 3056 if (!ep)
3057 return;
3058
3059 switch (req->retval) {
3060 case FW_ENOMEM:
793dad94
VP		 3061 set_bit(ACT_RETRY_NOMEM, &ep->com.history);
3062 if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) {
3063 send_fw_act_open_req(ep, atid);
3064 return;
3065 }
1cab775c 3066 case FW_EADDRINUSE:
793dad94
VP		 3067 set_bit(ACT_RETRY_INUSE, &ep->com.history);
3068 if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) {
3069 send_fw_act_open_req(ep, atid);
3070 return;
3071 }
1cab775c
VP		 3072 break;
3073 default:
3074 pr_info("%s unexpected ofld conn wr retval %d\n",
3075 __func__, req->retval);
3076 break;
3077 }
793dad94
VP		 3078 pr_err("active ofld_connect_wr failure %d atid %d\n",
3079 req->retval, atid);
3080 mutex_lock(&dev->rdev.stats.lock);
3081 dev->rdev.stats.act_ofld_conn_fails++;
3082 mutex_unlock(&dev->rdev.stats.lock);
1cab775c 3083 connect_reply_upcall(ep, status2errno(req->retval));
793dad94
VP		 3084 state_set(&ep->com, DEAD);
3085 remove_handle(dev, &dev->atid_idr, atid);
3086 cxgb4_free_atid(dev->rdev.lldi.tids, atid);
3087 dst_release(ep->dst);
3088 cxgb4_l2t_release(ep->l2t);
3089 c4iw_put_ep(&ep->com);
1cab775c
VP		 3090}
3091
3092static void passive_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb,
3093 struct cpl_fw6_msg_ofld_connection_wr_rpl *req)
3094{
3095 struct sk_buff *rpl_skb;
3096 struct cpl_pass_accept_req *cpl;
3097 int ret;
3098
710a3110 3099 rpl_skb = (struct sk_buff *)(unsigned long)req->cookie;
1cab775c
VP		 3100 BUG_ON(!rpl_skb);
3101 if (req->retval) {
3102 PDBG("%s passive open failure %d\n", __func__, req->retval);
793dad94
VP		 3103 mutex_lock(&dev->rdev.stats.lock);
3104 dev->rdev.stats.pas_ofld_conn_fails++;
3105 mutex_unlock(&dev->rdev.stats.lock);
1cab775c
VP		 3106 kfree_skb(rpl_skb);
3107 } else {
3108 cpl = (struct cpl_pass_accept_req *)cplhdr(rpl_skb);
3109 OPCODE_TID(cpl) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ,
ef5d6355
VP		 3110 (__force u32) htonl(
3111 (__force u32) req->tid)));
1cab775c
VP		 3112 ret = pass_accept_req(dev, rpl_skb);
3113 if (!ret)
3114 kfree_skb(rpl_skb);
3115 }
3116 return;
3117}
3118
3119static int deferred_fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb)
2f5b48c3
SW		 3120{
3121 struct cpl_fw6_msg *rpl = cplhdr(skb);
1cab775c
VP		 3122 struct cpl_fw6_msg_ofld_connection_wr_rpl *req;
3123
3124 switch (rpl->type) {
3125 case FW6_TYPE_CQE:
3126 c4iw_ev_dispatch(dev, (struct t4_cqe *)&rpl->data[0]);
3127 break;
3128 case FW6_TYPE_OFLD_CONNECTION_WR_RPL:
3129 req = (struct cpl_fw6_msg_ofld_connection_wr_rpl *)rpl->data;
3130 switch (req->t_state) {
3131 case TCP_SYN_SENT:
3132 active_ofld_conn_reply(dev, skb, req);
3133 break;
3134 case TCP_SYN_RECV:
3135 passive_ofld_conn_reply(dev, skb, req);
3136 break;
3137 default:
3138 pr_err("%s unexpected ofld conn wr state %d\n",
3139 __func__, req->t_state);
3140 break;
3141 }
3142 break;
3143 }
3144 return 0;
3145}
3146
3147static void build_cpl_pass_accept_req(struct sk_buff *skb, int stid , u8 tos)
3148{
3149 u32 l2info;
f079af7a 3150 u16 vlantag, len, hdr_len, eth_hdr_len;
1cab775c
VP		 3151 u8 intf;
3152 struct cpl_rx_pkt *cpl = cplhdr(skb);
3153 struct cpl_pass_accept_req *req;
3154 struct tcp_options_received tmp_opt;
f079af7a 3155 struct c4iw_dev *dev;
1cab775c 3156
f079af7a 3157 dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *)));
1cab775c 3158 /* Store values from cpl_rx_pkt in temporary location. */
ef5d6355
VP		 3159 vlantag = (__force u16) cpl->vlan;
3160 len = (__force u16) cpl->len;
3161 l2info = (__force u32) cpl->l2info;
3162 hdr_len = (__force u16) cpl->hdr_len;
1cab775c
VP		 3163 intf = cpl->iff;
3164
3165 __skb_pull(skb, sizeof(*req) + sizeof(struct rss_header));
3166
3167 /*
3168 * We need to parse the TCP options from SYN packet.
3169 * to generate cpl_pass_accept_req.
3170 */
3171 memset(&tmp_opt, 0, sizeof(tmp_opt));
3172 tcp_clear_options(&tmp_opt);
1a2c6181 3173 tcp_parse_options(skb, &tmp_opt, 0, NULL);
1cab775c
VP		 3174
3175 req = (struct cpl_pass_accept_req *)__skb_push(skb, sizeof(*req));
3176 memset(req, 0, sizeof(*req));
3177 req->l2info = cpu_to_be16(V_SYN_INTF(intf) |
ef5d6355
VP		 3178 V_SYN_MAC_IDX(G_RX_MACIDX(
3179 (__force int) htonl(l2info))) |
1cab775c 3180 F_SYN_XACT_MATCH);
f079af7a
VP		 3181 eth_hdr_len = is_t4(dev->rdev.lldi.adapter_type) ?
3182 G_RX_ETHHDR_LEN((__force int) htonl(l2info)) :
3183 G_RX_T5_ETHHDR_LEN((__force int) htonl(l2info));
ef5d6355
VP		 3184 req->hdr_len = cpu_to_be32(V_SYN_RX_CHAN(G_RX_CHAN(
3185 (__force int) htonl(l2info))) |
3186 V_TCP_HDR_LEN(G_RX_TCPHDR_LEN(
3187 (__force int) htons(hdr_len))) |
3188 V_IP_HDR_LEN(G_RX_IPHDR_LEN(
3189 (__force int) htons(hdr_len))) |
f079af7a 3190 V_ETH_HDR_LEN(G_RX_ETHHDR_LEN(eth_hdr_len)));
ef5d6355
VP		 3191 req->vlan = (__force __be16) vlantag;
3192 req->len = (__force __be16) len;
1cab775c
VP		 3193 req->tos_stid = cpu_to_be32(PASS_OPEN_TID(stid) |
3194 PASS_OPEN_TOS(tos));
3195 req->tcpopt.mss = htons(tmp_opt.mss_clamp);
3196 if (tmp_opt.wscale_ok)
3197 req->tcpopt.wsf = tmp_opt.snd_wscale;
3198 req->tcpopt.tstamp = tmp_opt.saw_tstamp;
3199 if (tmp_opt.sack_ok)
3200 req->tcpopt.sack = 1;
3201 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ, 0));
3202 return;
3203}
3204
3205static void send_fw_pass_open_req(struct c4iw_dev *dev, struct sk_buff *skb,
3206 __be32 laddr, __be16 lport,
3207 __be32 raddr, __be16 rport,
3208 u32 rcv_isn, u32 filter, u16 window,
3209 u32 rss_qid, u8 port_id)
3210{
3211 struct sk_buff *req_skb;
3212 struct fw_ofld_connection_wr *req;
3213 struct cpl_pass_accept_req *cpl = cplhdr(skb);
1ce1d471 3214 int ret;
1cab775c
VP		 3215
3216 req_skb = alloc_skb(sizeof(struct fw_ofld_connection_wr), GFP_KERNEL);
3217 req = (struct fw_ofld_connection_wr *)__skb_put(req_skb, sizeof(*req));
3218 memset(req, 0, sizeof(*req));
3219 req->op_compl = htonl(V_WR_OP(FW_OFLD_CONNECTION_WR) | FW_WR_COMPL(1));
3220 req->len16_pkd = htonl(FW_WR_LEN16(DIV_ROUND_UP(sizeof(*req), 16)));
3221 req->le.version_cpl = htonl(F_FW_OFLD_CONNECTION_WR_CPL);
ef5d6355 3222 req->le.filter = (__force __be32) filter;
1cab775c
VP		 3223 req->le.lport = lport;
3224 req->le.pport = rport;
3225 req->le.u.ipv4.lip = laddr;
3226 req->le.u.ipv4.pip = raddr;
3227 req->tcb.rcv_nxt = htonl(rcv_isn + 1);
3228 req->tcb.rcv_adv = htons(window);
3229 req->tcb.t_state_to_astid =
3230 htonl(V_FW_OFLD_CONNECTION_WR_T_STATE(TCP_SYN_RECV) |
3231 V_FW_OFLD_CONNECTION_WR_RCV_SCALE(cpl->tcpopt.wsf) |
3232 V_FW_OFLD_CONNECTION_WR_ASTID(
3233 GET_PASS_OPEN_TID(ntohl(cpl->tos_stid))));
3234
3235 /*
3236 * We store the qid in opt2 which will be used by the firmware
3237 * to send us the wr response.
3238 */
3239 req->tcb.opt2 = htonl(V_RSS_QUEUE(rss_qid));
3240
3241 /*
3242 * We initialize the MSS index in TCB to 0xF.
3243 * So that when driver sends cpl_pass_accept_rpl
3244 * TCB picks up the correct value. If this was 0
3245 * TP will ignore any value > 0 for MSS index.
3246 */
3247 req->tcb.opt0 = cpu_to_be64(V_MSS_IDX(0xF));
710a3110 3248 req->cookie = (unsigned long)skb;
1cab775c
VP		 3249
3250 set_wr_txq(req_skb, CPL_PRIORITY_CONTROL, port_id);
1ce1d471
SW		 3251 ret = cxgb4_ofld_send(dev->rdev.lldi.ports[0], req_skb);
3252 if (ret < 0) {
3253 pr_err("%s - cxgb4_ofld_send error %d - dropping\n", __func__,
3254 ret);
3255 kfree_skb(skb);
3256 kfree_skb(req_skb);
3257 }
1cab775c
VP		 3258}
3259
3260/*
3261 * Handler for CPL_RX_PKT message. Need to handle cpl_rx_pkt
3262 * messages when a filter is being used instead of server to
3263 * redirect a syn packet. When packets hit filter they are redirected
3264 * to the offload queue and driver tries to establish the connection
3265 * using firmware work request.
3266 */
3267static int rx_pkt(struct c4iw_dev *dev, struct sk_buff *skb)
3268{
3269 int stid;
3270 unsigned int filter;
3271 struct ethhdr *eh = NULL;
3272 struct vlan_ethhdr *vlan_eh = NULL;
3273 struct iphdr *iph;
3274 struct tcphdr *tcph;
3275 struct rss_header *rss = (void *)skb->data;
3276 struct cpl_rx_pkt *cpl = (void *)skb->data;
3277 struct cpl_pass_accept_req *req = (void *)(rss + 1);
3278 struct l2t_entry *e;
3279 struct dst_entry *dst;
1cab775c
VP		 3280 struct c4iw_ep *lep;
3281 u16 window;
3282 struct port_info *pi;
3283 struct net_device *pdev;
f079af7a 3284 u16 rss_qid, eth_hdr_len;
1cab775c
VP		 3285 int step;
3286 u32 tx_chan;
3287 struct neighbour *neigh;
3288
3289 /* Drop all non-SYN packets */
3290 if (!(cpl->l2info & cpu_to_be32(F_RXF_SYN)))
3291 goto reject;
3292
3293 /*
3294 * Drop all packets which did not hit the filter.
3295 * Unlikely to happen.
3296 */
3297 if (!(rss->filter_hit && rss->filter_tid))
3298 goto reject;
3299
3300 /*
3301 * Calculate the server tid from filter hit index from cpl_rx_pkt.
3302 */
a4ea025f 3303 stid = (__force int) cpu_to_be32((__force u32) rss->hash_val);
1cab775c
VP		 3304
3305 lep = (struct c4iw_ep *)lookup_stid(dev->rdev.lldi.tids, stid);
3306 if (!lep) {
3307 PDBG("%s connect request on invalid stid %d\n", __func__, stid);
3308 goto reject;
3309 }
3310
f079af7a
VP		 3311 eth_hdr_len = is_t4(dev->rdev.lldi.adapter_type) ?
3312 G_RX_ETHHDR_LEN(htonl(cpl->l2info)) :
3313 G_RX_T5_ETHHDR_LEN(htonl(cpl->l2info));
3314 if (eth_hdr_len == ETH_HLEN) {
1cab775c
VP		 3315 eh = (struct ethhdr *)(req + 1);
3316 iph = (struct iphdr *)(eh + 1);
3317 } else {
3318 vlan_eh = (struct vlan_ethhdr *)(req + 1);
3319 iph = (struct iphdr *)(vlan_eh + 1);
3320 skb->vlan_tci = ntohs(cpl->vlan);
3321 }
3322
3323 if (iph->version != 0x4)
3324 goto reject;
3325
3326 tcph = (struct tcphdr *)(iph + 1);
3327 skb_set_network_header(skb, (void *)iph - (void *)rss);
3328 skb_set_transport_header(skb, (void *)tcph - (void *)rss);
3329 skb_get(skb);
3330
3331 PDBG("%s lip 0x%x lport %u pip 0x%x pport %u tos %d\n", __func__,
3332 ntohl(iph->daddr), ntohs(tcph->dest), ntohl(iph->saddr),
3333 ntohs(tcph->source), iph->tos);
3334
830662f6
VP		 3335 dst = find_route(dev, iph->daddr, iph->saddr, tcph->dest, tcph->source,
3336 iph->tos);
3337 if (!dst) {
1cab775c
VP		 3338 pr_err("%s - failed to find dst entry!\n",
3339 __func__);
3340 goto reject;
3341 }
1cab775c
VP		 3342 neigh = dst_neigh_lookup_skb(dst, skb);
3343
aaa0c23c
ZZ		 3344 if (!neigh) {
3345 pr_err("%s - failed to allocate neigh!\n",
3346 __func__);
3347 goto free_dst;
3348 }
3349
1cab775c
VP		 3350 if (neigh->dev->flags & IFF_LOOPBACK) {
3351 pdev = ip_dev_find(&init_net, iph->daddr);
3352 e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh,
3353 pdev, 0);
3354 pi = (struct port_info *)netdev_priv(pdev);
3355 tx_chan = cxgb4_port_chan(pdev);
3356 dev_put(pdev);
3357 } else {
830662f6 3358 pdev = get_real_dev(neigh->dev);
1cab775c 3359 e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh,
830662f6
VP		 3360 pdev, 0);
3361 pi = (struct port_info *)netdev_priv(pdev);
3362 tx_chan = cxgb4_port_chan(pdev);
1cab775c 3363 }
ebf00060 3364 neigh_release(neigh);
1cab775c
VP		 3365 if (!e) {
3366 pr_err("%s - failed to allocate l2t entry!\n",
3367 __func__);
3368 goto free_dst;
3369 }
3370
3371 step = dev->rdev.lldi.nrxq / dev->rdev.lldi.nchan;
3372 rss_qid = dev->rdev.lldi.rxq_ids[pi->port_id * step];
ef5d6355 3373 window = (__force u16) htons((__force u16)tcph->window);
1cab775c
VP		 3374
3375 /* Calcuate filter portion for LE region. */
41b4f86c
KS		 3376 filter = (__force unsigned int) cpu_to_be32(cxgb4_select_ntuple(
3377 dev->rdev.lldi.ports[0],
3378 e));
1cab775c
VP		 3379
3380 /*
3381 * Synthesize the cpl_pass_accept_req. We have everything except the
3382 * TID. Once firmware sends a reply with TID we update the TID field
3383 * in cpl and pass it through the regular cpl_pass_accept_req path.
3384 */
3385 build_cpl_pass_accept_req(skb, stid, iph->tos);
3386 send_fw_pass_open_req(dev, skb, iph->daddr, tcph->dest, iph->saddr,
3387 tcph->source, ntohl(tcph->seq), filter, window,
3388 rss_qid, pi->port_id);
3389 cxgb4_l2t_release(e);
3390free_dst:
3391 dst_release(dst);
3392reject:
2f5b48c3
SW		 3393 return 0;
3394}
3395
be4c9bad
RD		 3396/*
3397 * These are the real handlers that are called from a
3398 * work queue.
3399 */
3400static c4iw_handler_func work_handlers[NUM_CPL_CMDS] = {
3401 [CPL_ACT_ESTABLISH] = act_establish,
3402 [CPL_ACT_OPEN_RPL] = act_open_rpl,
3403 [CPL_RX_DATA] = rx_data,
3404 [CPL_ABORT_RPL_RSS] = abort_rpl,
3405 [CPL_ABORT_RPL] = abort_rpl,
3406 [CPL_PASS_OPEN_RPL] = pass_open_rpl,
3407 [CPL_CLOSE_LISTSRV_RPL] = close_listsrv_rpl,
3408 [CPL_PASS_ACCEPT_REQ] = pass_accept_req,
3409 [CPL_PASS_ESTABLISH] = pass_establish,
3410 [CPL_PEER_CLOSE] = peer_close,
3411 [CPL_ABORT_REQ_RSS] = peer_abort,
3412 [CPL_CLOSE_CON_RPL] = close_con_rpl,
3413 [CPL_RDMA_TERMINATE] = terminate,
2f5b48c3 3414 [CPL_FW4_ACK] = fw4_ack,
1cab775c
VP		 3415 [CPL_FW6_MSG] = deferred_fw6_msg,
3416 [CPL_RX_PKT] = rx_pkt
be4c9bad
RD		 3417};
3418
3419static void process_timeout(struct c4iw_ep *ep)
3420{
3421 struct c4iw_qp_attributes attrs;
3422 int abort = 1;
3423
2f5b48c3 3424 mutex_lock(&ep->com.mutex);
be4c9bad
RD		 3425 PDBG("%s ep %p tid %u state %d\n", __func__, ep, ep->hwtid,
3426 ep->com.state);
793dad94 3427 set_bit(TIMEDOUT, &ep->com.history);
be4c9bad
RD		 3428 switch (ep->com.state) {
3429 case MPA_REQ_SENT:
3430 __state_set(&ep->com, ABORTING);
3431 connect_reply_upcall(ep, -ETIMEDOUT);
3432 break;
3433 case MPA_REQ_WAIT:
3434 __state_set(&ep->com, ABORTING);
3435 break;
3436 case CLOSING:
3437 case MORIBUND:
3438 if (ep->com.cm_id && ep->com.qp) {
3439 attrs.next_state = C4IW_QP_STATE_ERROR;
3440 c4iw_modify_qp(ep->com.qp->rhp,
3441 ep->com.qp, C4IW_QP_ATTR_NEXT_STATE,
3442 &attrs, 1);
3443 }
3444 __state_set(&ep->com, ABORTING);
be13b2df 3445 close_complete_upcall(ep, -ETIMEDOUT);
be4c9bad
RD		 3446 break;
3447 default:
76f267b7 3448 WARN(1, "%s unexpected state ep %p tid %u state %u\n",
be4c9bad 3449 __func__, ep, ep->hwtid, ep->com.state);
be4c9bad
RD		 3450 abort = 0;
3451 }
2f5b48c3 3452 mutex_unlock(&ep->com.mutex);
be4c9bad
RD		 3453 if (abort)
3454 abort_connection(ep, NULL, GFP_KERNEL);
3455 c4iw_put_ep(&ep->com);
3456}
3457
3458static void process_timedout_eps(void)
3459{
3460 struct c4iw_ep *ep;
3461
3462 spin_lock_irq(&timeout_lock);
3463 while (!list_empty(&timeout_list)) {
3464 struct list_head *tmp;
3465
3466 tmp = timeout_list.next;
3467 list_del(tmp);
3468 spin_unlock_irq(&timeout_lock);
3469 ep = list_entry(tmp, struct c4iw_ep, entry);
3470 process_timeout(ep);
3471 spin_lock_irq(&timeout_lock);
3472 }
3473 spin_unlock_irq(&timeout_lock);
3474}
3475
3476static void process_work(struct work_struct *work)
3477{
3478 struct sk_buff *skb = NULL;
3479 struct c4iw_dev *dev;
c1d7356c 3480 struct cpl_act_establish *rpl;
be4c9bad
RD		 3481 unsigned int opcode;
3482 int ret;
3483
3484 while ((skb = skb_dequeue(&rxq))) {
3485 rpl = cplhdr(skb);
3486 dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *)));
3487 opcode = rpl->ot.opcode;
3488
3489 BUG_ON(!work_handlers[opcode]);
3490 ret = work_handlers[opcode](dev, skb);
3491 if (!ret)
3492 kfree_skb(skb);
3493 }
3494 process_timedout_eps();
3495}
3496
3497static DECLARE_WORK(skb_work, process_work);
3498
3499static void ep_timeout(unsigned long arg)
3500{
3501 struct c4iw_ep *ep = (struct c4iw_ep *)arg;
1ec779cc 3502 int kickit = 0;
be4c9bad
RD		 3503
3504 spin_lock(&timeout_lock);
1ec779cc
VP		 3505 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) {
3506 list_add_tail(&ep->entry, &timeout_list);
3507 kickit = 1;
3508 }
be4c9bad 3509 spin_unlock(&timeout_lock);
1ec779cc
VP		 3510 if (kickit)
3511 queue_work(workq, &skb_work);
be4c9bad
RD		 3512}
3513
cfdda9d7
SW		 3514/*
3515 * All the CM events are handled on a work queue to have a safe context.
3516 */
3517static int sched(struct c4iw_dev *dev, struct sk_buff *skb)
3518{
3519
3520 /*
3521 * Save dev in the skb->cb area.
3522 */
3523 *((struct c4iw_dev **) (skb->cb + sizeof(void *))) = dev;
3524
3525 /*
3526 * Queue the skb and schedule the worker thread.
3527 */
3528 skb_queue_tail(&rxq, skb);
3529 queue_work(workq, &skb_work);
3530 return 0;
3531}
3532
3533static int set_tcb_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
3534{
3535 struct cpl_set_tcb_rpl *rpl = cplhdr(skb);
3536
3537 if (rpl->status != CPL_ERR_NONE) {
3538 printk(KERN_ERR MOD "Unexpected SET_TCB_RPL status %u "
3539 "for tid %u\n", rpl->status, GET_TID(rpl));
3540 }
2f5b48c3 3541 kfree_skb(skb);
cfdda9d7
SW		 3542 return 0;
3543}
3544
be4c9bad
RD		 3545static int fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb)
3546{
3547 struct cpl_fw6_msg *rpl = cplhdr(skb);
3548 struct c4iw_wr_wait *wr_waitp;
3549 int ret;
3550
3551 PDBG("%s type %u\n", __func__, rpl->type);
3552
3553 switch (rpl->type) {
5be78ee9 3554 case FW6_TYPE_WR_RPL:
be4c9bad 3555 ret = (int)((be64_to_cpu(rpl->data[0]) >> 8) & 0xff);
c8e081a1 3556 wr_waitp = (struct c4iw_wr_wait *)(__force unsigned long) rpl->data[1];
be4c9bad 3557 PDBG("%s wr_waitp %p ret %u\n", __func__, wr_waitp, ret);
d9594d99
SW		 3558 if (wr_waitp)
3559 c4iw_wake_up(wr_waitp, ret ? -ret : 0);
2f5b48c3 3560 kfree_skb(skb);
be4c9bad 3561 break;
5be78ee9 3562 case FW6_TYPE_CQE:
5be78ee9 3563 case FW6_TYPE_OFLD_CONNECTION_WR_RPL:
1cab775c 3564 sched(dev, skb);
5be78ee9 3565 break;
be4c9bad
RD		 3566 default:
3567 printk(KERN_ERR MOD "%s unexpected fw6 msg type %u\n", __func__,
3568 rpl->type);
2f5b48c3 3569 kfree_skb(skb);
be4c9bad
RD		 3570 break;
3571 }
3572 return 0;
3573}
3574
8da7e7a5
SW		 3575static int peer_abort_intr(struct c4iw_dev *dev, struct sk_buff *skb)
3576{
3577 struct cpl_abort_req_rss *req = cplhdr(skb);
3578 struct c4iw_ep *ep;
3579 struct tid_info *t = dev->rdev.lldi.tids;
3580 unsigned int tid = GET_TID(req);
3581
3582 ep = lookup_tid(t, tid);
14b92228
SW		 3583 if (!ep) {
3584 printk(KERN_WARNING MOD
3585 "Abort on non-existent endpoint, tid %d\n", tid);
3586 kfree_skb(skb);
3587 return 0;
3588 }
8da7e7a5
SW		 3589 if (is_neg_adv_abort(req->status)) {
3590 PDBG("%s neg_adv_abort ep %p tid %u\n", __func__, ep,
3591 ep->hwtid);
3592 kfree_skb(skb);
3593 return 0;
3594 }
3595 PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid,
3596 ep->com.state);
3597
3598 /*
3599 * Wake up any threads in rdma_init() or rdma_fini().
7c0a33d6
VP		 3600 * However, if we are on MPAv2 and want to retry with MPAv1
3601 * then, don't wake up yet.
8da7e7a5 3602 */
7c0a33d6
VP		 3603 if (mpa_rev == 2 && !ep->tried_with_mpa_v1) {
3604 if (ep->com.state != MPA_REQ_SENT)
3605 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
3606 } else
3607 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
8da7e7a5
SW		 3608 sched(dev, skb);
3609 return 0;
3610}
3611
be4c9bad
RD		 3612/*
3613 * Most upcalls from the T4 Core go to sched() to
3614 * schedule the processing on a work queue.
3615 */
3616c4iw_handler_func c4iw_handlers[NUM_CPL_CMDS] = {
3617 [CPL_ACT_ESTABLISH] = sched,
3618 [CPL_ACT_OPEN_RPL] = sched,
3619 [CPL_RX_DATA] = sched,
3620 [CPL_ABORT_RPL_RSS] = sched,
3621 [CPL_ABORT_RPL] = sched,
3622 [CPL_PASS_OPEN_RPL] = sched,
3623 [CPL_CLOSE_LISTSRV_RPL] = sched,
3624 [CPL_PASS_ACCEPT_REQ] = sched,
3625 [CPL_PASS_ESTABLISH] = sched,
3626 [CPL_PEER_CLOSE] = sched,
3627 [CPL_CLOSE_CON_RPL] = sched,
8da7e7a5 3628 [CPL_ABORT_REQ_RSS] = peer_abort_intr,
be4c9bad
RD		 3629 [CPL_RDMA_TERMINATE] = sched,
3630 [CPL_FW4_ACK] = sched,
3631 [CPL_SET_TCB_RPL] = set_tcb_rpl,
1cab775c
VP		 3632 [CPL_FW6_MSG] = fw6_msg,
3633 [CPL_RX_PKT] = sched
be4c9bad
RD		 3634};
3635
cfdda9d7
SW		 3636int __init c4iw_cm_init(void)
3637{
be4c9bad 3638 spin_lock_init(&timeout_lock);
cfdda9d7
SW		 3639 skb_queue_head_init(&rxq);
3640
3641 workq = create_singlethread_workqueue("iw_cxgb4");
3642 if (!workq)
3643 return -ENOMEM;
3644
cfdda9d7
SW		 3645 return 0;
3646}
3647
3648void __exit c4iw_cm_term(void)
3649{
be4c9bad 3650 WARN_ON(!list_empty(&timeout_list));
cfdda9d7
SW		 3651 flush_workqueue(workq);
3652 destroy_workqueue(workq);
3653}
Linux 6.x block layer and io_uring tree(s)