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RDMA/cxgb4: Server filters are supported only for IPv4
[deliverable/linux.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
101static int peer2peer;
102module_param(peer2peer, int, 0644);
103MODULE_PARM_DESC(peer2peer, "Support peer2peer ULPs (default=0)");
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;
403 if (!our_interface(dev, n->dev)) {
404 dst_release(&rt->dst);
405 return NULL;
406 }
407 neigh_release(n);
408 return &rt->dst;
cfdda9d7
SW		 409}
410
411static void arp_failure_discard(void *handle, struct sk_buff *skb)
412{
413 PDBG("%s c4iw_dev %p\n", __func__, handle);
414 kfree_skb(skb);
415}
416
417/*
418 * Handle an ARP failure for an active open.
419 */
420static void act_open_req_arp_failure(void *handle, struct sk_buff *skb)
421{
422 printk(KERN_ERR MOD "ARP failure duing connect\n");
423 kfree_skb(skb);
424}
425
426/*
427 * Handle an ARP failure for a CPL_ABORT_REQ. Change it into a no RST variant
428 * and send it along.
429 */
430static void abort_arp_failure(void *handle, struct sk_buff *skb)
431{
432 struct c4iw_rdev *rdev = handle;
433 struct cpl_abort_req *req = cplhdr(skb);
434
435 PDBG("%s rdev %p\n", __func__, rdev);
436 req->cmd = CPL_ABORT_NO_RST;
437 c4iw_ofld_send(rdev, skb);
438}
439
440static void send_flowc(struct c4iw_ep *ep, struct sk_buff *skb)
441{
442 unsigned int flowclen = 80;
443 struct fw_flowc_wr *flowc;
444 int i;
445
446 skb = get_skb(skb, flowclen, GFP_KERNEL);
447 flowc = (struct fw_flowc_wr *)__skb_put(skb, flowclen);
448
449 flowc->op_to_nparams = cpu_to_be32(FW_WR_OP(FW_FLOWC_WR) |
450 FW_FLOWC_WR_NPARAMS(8));
451 flowc->flowid_len16 = cpu_to_be32(FW_WR_LEN16(DIV_ROUND_UP(flowclen,
452 16)) | FW_WR_FLOWID(ep->hwtid));
453
454 flowc->mnemval[0].mnemonic = FW_FLOWC_MNEM_PFNVFN;
94788657 455 flowc->mnemval[0].val = cpu_to_be32(PCI_FUNC(ep->com.dev->rdev.lldi.pdev->devfn) << 8);
cfdda9d7
SW		 456 flowc->mnemval[1].mnemonic = FW_FLOWC_MNEM_CH;
457 flowc->mnemval[1].val = cpu_to_be32(ep->tx_chan);
458 flowc->mnemval[2].mnemonic = FW_FLOWC_MNEM_PORT;
459 flowc->mnemval[2].val = cpu_to_be32(ep->tx_chan);
460 flowc->mnemval[3].mnemonic = FW_FLOWC_MNEM_IQID;
461 flowc->mnemval[3].val = cpu_to_be32(ep->rss_qid);
462 flowc->mnemval[4].mnemonic = FW_FLOWC_MNEM_SNDNXT;
463 flowc->mnemval[4].val = cpu_to_be32(ep->snd_seq);
464 flowc->mnemval[5].mnemonic = FW_FLOWC_MNEM_RCVNXT;
465 flowc->mnemval[5].val = cpu_to_be32(ep->rcv_seq);
466 flowc->mnemval[6].mnemonic = FW_FLOWC_MNEM_SNDBUF;
467 flowc->mnemval[6].val = cpu_to_be32(snd_win);
468 flowc->mnemval[7].mnemonic = FW_FLOWC_MNEM_MSS;
469 flowc->mnemval[7].val = cpu_to_be32(ep->emss);
470 /* Pad WR to 16 byte boundary */
471 flowc->mnemval[8].mnemonic = 0;
472 flowc->mnemval[8].val = 0;
473 for (i = 0; i < 9; i++) {
474 flowc->mnemval[i].r4[0] = 0;
475 flowc->mnemval[i].r4[1] = 0;
476 flowc->mnemval[i].r4[2] = 0;
477 }
478
479 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
480 c4iw_ofld_send(&ep->com.dev->rdev, skb);
481}
482
483static int send_halfclose(struct c4iw_ep *ep, gfp_t gfp)
484{
485 struct cpl_close_con_req *req;
486 struct sk_buff *skb;
487 int wrlen = roundup(sizeof *req, 16);
488
489 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
490 skb = get_skb(NULL, wrlen, gfp);
491 if (!skb) {
492 printk(KERN_ERR MOD "%s - failed to alloc skb\n", __func__);
493 return -ENOMEM;
494 }
495 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
496 t4_set_arp_err_handler(skb, NULL, arp_failure_discard);
497 req = (struct cpl_close_con_req *) skb_put(skb, wrlen);
498 memset(req, 0, wrlen);
499 INIT_TP_WR(req, ep->hwtid);
500 OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_CLOSE_CON_REQ,
501 ep->hwtid));
502 return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
503}
504
505static int send_abort(struct c4iw_ep *ep, struct sk_buff *skb, gfp_t gfp)
506{
507 struct cpl_abort_req *req;
508 int wrlen = roundup(sizeof *req, 16);
509
510 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
511 skb = get_skb(skb, wrlen, gfp);
512 if (!skb) {
513 printk(KERN_ERR MOD "%s - failed to alloc skb.\n",
514 __func__);
515 return -ENOMEM;
516 }
517 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
518 t4_set_arp_err_handler(skb, &ep->com.dev->rdev, abort_arp_failure);
519 req = (struct cpl_abort_req *) skb_put(skb, wrlen);
520 memset(req, 0, wrlen);
521 INIT_TP_WR(req, ep->hwtid);
522 OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_REQ, ep->hwtid));
523 req->cmd = CPL_ABORT_SEND_RST;
524 return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
525}
526
5be78ee9
VP		 527#define VLAN_NONE 0xfff
528#define FILTER_SEL_VLAN_NONE 0xffff
529#define FILTER_SEL_WIDTH_P_FC (3+1) /* port uses 3 bits, FCoE one bit */
530#define FILTER_SEL_WIDTH_VIN_P_FC \
531 (6 + 7 + FILTER_SEL_WIDTH_P_FC) /* 6 bits are unused, VF uses 7 bits*/
532#define FILTER_SEL_WIDTH_TAG_P_FC \
533 (3 + FILTER_SEL_WIDTH_VIN_P_FC) /* PF uses 3 bits */
534#define FILTER_SEL_WIDTH_VLD_TAG_P_FC (1 + FILTER_SEL_WIDTH_TAG_P_FC)
535
536static unsigned int select_ntuple(struct c4iw_dev *dev, struct dst_entry *dst,
537 struct l2t_entry *l2t)
538{
539 unsigned int ntuple = 0;
540 u32 viid;
541
542 switch (dev->rdev.lldi.filt_mode) {
543
544 /* default filter mode */
545 case HW_TPL_FR_MT_PR_IV_P_FC:
546 if (l2t->vlan == VLAN_NONE)
547 ntuple |= FILTER_SEL_VLAN_NONE << FILTER_SEL_WIDTH_P_FC;
548 else {
549 ntuple |= l2t->vlan << FILTER_SEL_WIDTH_P_FC;
68074bb1 550 ntuple |= 1 << FILTER_SEL_WIDTH_TAG_P_FC;
5be78ee9
VP		 551 }
552 ntuple |= l2t->lport << S_PORT | IPPROTO_TCP <<
553 FILTER_SEL_WIDTH_VLD_TAG_P_FC;
554 break;
555 case HW_TPL_FR_MT_PR_OV_P_FC: {
556 viid = cxgb4_port_viid(l2t->neigh->dev);
557
558 ntuple |= FW_VIID_VIN_GET(viid) << FILTER_SEL_WIDTH_P_FC;
559 ntuple |= FW_VIID_PFN_GET(viid) << FILTER_SEL_WIDTH_VIN_P_FC;
560 ntuple |= FW_VIID_VIVLD_GET(viid) << FILTER_SEL_WIDTH_TAG_P_FC;
561 ntuple |= l2t->lport << S_PORT | IPPROTO_TCP <<
562 FILTER_SEL_WIDTH_VLD_TAG_P_FC;
563 break;
564 }
565 default:
566 break;
567 }
568 return ntuple;
569}
570
cfdda9d7
SW		 571static int send_connect(struct c4iw_ep *ep)
572{
573 struct cpl_act_open_req *req;
f079af7a 574 struct cpl_t5_act_open_req *t5_req;
830662f6
VP		 575 struct cpl_act_open_req6 *req6;
576 struct cpl_t5_act_open_req6 *t5_req6;
cfdda9d7
SW		 577 struct sk_buff *skb;
578 u64 opt0;
579 u32 opt2;
580 unsigned int mtu_idx;
581 int wscale;
830662f6
VP		 582 int wrlen;
583 int sizev4 = is_t4(ep->com.dev->rdev.lldi.adapter_type) ?
584 sizeof(struct cpl_act_open_req) :
585 sizeof(struct cpl_t5_act_open_req);
586 int sizev6 = is_t4(ep->com.dev->rdev.lldi.adapter_type) ?
587 sizeof(struct cpl_act_open_req6) :
588 sizeof(struct cpl_t5_act_open_req6);
589 struct sockaddr_in *la = (struct sockaddr_in *)&ep->com.local_addr;
590 struct sockaddr_in *ra = (struct sockaddr_in *)&ep->com.remote_addr;
591 struct sockaddr_in6 *la6 = (struct sockaddr_in6 *)&ep->com.local_addr;
592 struct sockaddr_in6 *ra6 = (struct sockaddr_in6 *)&ep->com.remote_addr;
593
594 wrlen = (ep->com.remote_addr.ss_family == AF_INET) ?
595 roundup(sizev4, 16) :
596 roundup(sizev6, 16);
cfdda9d7
SW		 597
598 PDBG("%s ep %p atid %u\n", __func__, ep, ep->atid);
599
600 skb = get_skb(NULL, wrlen, GFP_KERNEL);
601 if (!skb) {
602 printk(KERN_ERR MOD "%s - failed to alloc skb.\n",
603 __func__);
604 return -ENOMEM;
605 }
d4f1a5c6 606 set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx);
cfdda9d7
SW		 607
608 cxgb4_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx);
609 wscale = compute_wscale(rcv_win);
5be78ee9
VP		 610 opt0 = (nocong ? NO_CONG(1) : 0) |
611 KEEP_ALIVE(1) |
ba6d3925 612 DELACK(1) |
cfdda9d7
SW		 613 WND_SCALE(wscale) |
614 MSS_IDX(mtu_idx) |
615 L2T_IDX(ep->l2t->idx) |
616 TX_CHAN(ep->tx_chan) |
617 SMAC_SEL(ep->smac_idx) |
618 DSCP(ep->tos) |
b48f3b9c 619 ULP_MODE(ULP_MODE_TCPDDP) |
cfdda9d7
SW		 620 RCV_BUFSIZ(rcv_win>>10);
621 opt2 = RX_CHANNEL(0) |
5be78ee9 622 CCTRL_ECN(enable_ecn) |
cfdda9d7
SW		 623 RSS_QUEUE_VALID | RSS_QUEUE(ep->rss_qid);
624 if (enable_tcp_timestamps)
625 opt2 |= TSTAMPS_EN(1);
626 if (enable_tcp_sack)
627 opt2 |= SACK_EN(1);
628 if (wscale && enable_tcp_window_scaling)
629 opt2 |= WND_SCALE_EN(1);
630 t4_set_arp_err_handler(skb, NULL, act_open_req_arp_failure);
631
f079af7a 632 if (is_t4(ep->com.dev->rdev.lldi.adapter_type)) {
830662f6
VP		 633 if (ep->com.remote_addr.ss_family == AF_INET) {
634 req = (struct cpl_act_open_req *) skb_put(skb, wrlen);
635 INIT_TP_WR(req, 0);
636 OPCODE_TID(req) = cpu_to_be32(
637 MK_OPCODE_TID(CPL_ACT_OPEN_REQ,
638 ((ep->rss_qid << 14) | ep->atid)));
639 req->local_port = la->sin_port;
640 req->peer_port = ra->sin_port;
641 req->local_ip = la->sin_addr.s_addr;
642 req->peer_ip = ra->sin_addr.s_addr;
643 req->opt0 = cpu_to_be64(opt0);
644 req->params = cpu_to_be32(select_ntuple(ep->com.dev,
645 ep->dst, ep->l2t));
646 req->opt2 = cpu_to_be32(opt2);
647 } else {
648 req6 = (struct cpl_act_open_req6 *)skb_put(skb, wrlen);
649
650 INIT_TP_WR(req6, 0);
651 OPCODE_TID(req6) = cpu_to_be32(
652 MK_OPCODE_TID(CPL_ACT_OPEN_REQ6,
653 ((ep->rss_qid<<14)|ep->atid)));
654 req6->local_port = la6->sin6_port;
655 req6->peer_port = ra6->sin6_port;
656 req6->local_ip_hi = *((__be64 *)
657 (la6->sin6_addr.s6_addr));
658 req6->local_ip_lo = *((__be64 *)
659 (la6->sin6_addr.s6_addr + 8));
660 req6->peer_ip_hi = *((__be64 *)
661 (ra6->sin6_addr.s6_addr));
662 req6->peer_ip_lo = *((__be64 *)
663 (ra6->sin6_addr.s6_addr + 8));
664 req6->opt0 = cpu_to_be64(opt0);
665 req6->params = cpu_to_be32(
666 select_ntuple(ep->com.dev, ep->dst,
667 ep->l2t));
668 req6->opt2 = cpu_to_be32(opt2);
669 }
f079af7a 670 } else {
830662f6
VP		 671 if (ep->com.remote_addr.ss_family == AF_INET) {
672 t5_req = (struct cpl_t5_act_open_req *)
673 skb_put(skb, wrlen);
674 INIT_TP_WR(t5_req, 0);
675 OPCODE_TID(t5_req) = cpu_to_be32(
f079af7a
VP		 676 MK_OPCODE_TID(CPL_ACT_OPEN_REQ,
677 ((ep->rss_qid << 14) | ep->atid)));
830662f6
VP		 678 t5_req->local_port = la->sin_port;
679 t5_req->peer_port = ra->sin_port;
680 t5_req->local_ip = la->sin_addr.s_addr;
681 t5_req->peer_ip = ra->sin_addr.s_addr;
682 t5_req->opt0 = cpu_to_be64(opt0);
683 t5_req->params = cpu_to_be64(V_FILTER_TUPLE(
684 select_ntuple(ep->com.dev,
685 ep->dst, ep->l2t)));
686 t5_req->opt2 = cpu_to_be32(opt2);
687 } else {
688 t5_req6 = (struct cpl_t5_act_open_req6 *)
689 skb_put(skb, wrlen);
690 INIT_TP_WR(t5_req6, 0);
691 OPCODE_TID(t5_req6) = cpu_to_be32(
692 MK_OPCODE_TID(CPL_ACT_OPEN_REQ6,
693 ((ep->rss_qid<<14)|ep->atid)));
694 t5_req6->local_port = la6->sin6_port;
695 t5_req6->peer_port = ra6->sin6_port;
696 t5_req6->local_ip_hi = *((__be64 *)
697 (la6->sin6_addr.s6_addr));
698 t5_req6->local_ip_lo = *((__be64 *)
699 (la6->sin6_addr.s6_addr + 8));
700 t5_req6->peer_ip_hi = *((__be64 *)
701 (ra6->sin6_addr.s6_addr));
702 t5_req6->peer_ip_lo = *((__be64 *)
703 (ra6->sin6_addr.s6_addr + 8));
704 t5_req6->opt0 = cpu_to_be64(opt0);
705 t5_req6->params = (__force __be64)cpu_to_be32(
706 select_ntuple(ep->com.dev, ep->dst, ep->l2t));
707 t5_req6->opt2 = cpu_to_be32(opt2);
708 }
f079af7a
VP		 709 }
710
793dad94 711 set_bit(ACT_OPEN_REQ, &ep->com.history);
cfdda9d7
SW		 712 return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
713}
714
d2fe99e8
KS		 715static void send_mpa_req(struct c4iw_ep *ep, struct sk_buff *skb,
716 u8 mpa_rev_to_use)
cfdda9d7
SW		 717{
718 int mpalen, wrlen;
719 struct fw_ofld_tx_data_wr *req;
720 struct mpa_message *mpa;
d2fe99e8 721 struct mpa_v2_conn_params mpa_v2_params;
cfdda9d7
SW		 722
723 PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen);
724
725 BUG_ON(skb_cloned(skb));
726
727 mpalen = sizeof(*mpa) + ep->plen;
d2fe99e8
KS		 728 if (mpa_rev_to_use == 2)
729 mpalen += sizeof(struct mpa_v2_conn_params);
cfdda9d7
SW		 730 wrlen = roundup(mpalen + sizeof *req, 16);
731 skb = get_skb(skb, wrlen, GFP_KERNEL);
732 if (!skb) {
733 connect_reply_upcall(ep, -ENOMEM);
734 return;
735 }
736 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
737
738 req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen);
739 memset(req, 0, wrlen);
740 req->op_to_immdlen = cpu_to_be32(
741 FW_WR_OP(FW_OFLD_TX_DATA_WR) |
742 FW_WR_COMPL(1) |
743 FW_WR_IMMDLEN(mpalen));
744 req->flowid_len16 = cpu_to_be32(
745 FW_WR_FLOWID(ep->hwtid) |
746 FW_WR_LEN16(wrlen >> 4));
747 req->plen = cpu_to_be32(mpalen);
748 req->tunnel_to_proxy = cpu_to_be32(
749 FW_OFLD_TX_DATA_WR_FLUSH(1) |
750 FW_OFLD_TX_DATA_WR_SHOVE(1));
751
752 mpa = (struct mpa_message *)(req + 1);
753 memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key));
754 mpa->flags = (crc_enabled ? MPA_CRC : 0) |
d2fe99e8
KS		 755 (markers_enabled ? MPA_MARKERS : 0) |
756 (mpa_rev_to_use == 2 ? MPA_ENHANCED_RDMA_CONN : 0);
cfdda9d7 757 mpa->private_data_size = htons(ep->plen);
d2fe99e8 758 mpa->revision = mpa_rev_to_use;
01b225e1 759 if (mpa_rev_to_use == 1) {
d2fe99e8 760 ep->tried_with_mpa_v1 = 1;
01b225e1
KS		 761 ep->retry_with_mpa_v1 = 0;
762 }
d2fe99e8
KS		 763
764 if (mpa_rev_to_use == 2) {
f747c34a
RD		 765 mpa->private_data_size = htons(ntohs(mpa->private_data_size) +
766 sizeof (struct mpa_v2_conn_params));
d2fe99e8
KS		 767 mpa_v2_params.ird = htons((u16)ep->ird);
768 mpa_v2_params.ord = htons((u16)ep->ord);
769
770 if (peer2peer) {
771 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL);
772 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE)
773 mpa_v2_params.ord |=
774 htons(MPA_V2_RDMA_WRITE_RTR);
775 else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ)
776 mpa_v2_params.ord |=
777 htons(MPA_V2_RDMA_READ_RTR);
778 }
779 memcpy(mpa->private_data, &mpa_v2_params,
780 sizeof(struct mpa_v2_conn_params));
cfdda9d7 781
d2fe99e8
KS		 782 if (ep->plen)
783 memcpy(mpa->private_data +
784 sizeof(struct mpa_v2_conn_params),
785 ep->mpa_pkt + sizeof(*mpa), ep->plen);
786 } else
787 if (ep->plen)
788 memcpy(mpa->private_data,
789 ep->mpa_pkt + sizeof(*mpa), ep->plen);
cfdda9d7
SW		 790
791 /*
792 * Reference the mpa skb. This ensures the data area
793 * will remain in memory until the hw acks the tx.
794 * Function fw4_ack() will deref it.
795 */
796 skb_get(skb);
797 t4_set_arp_err_handler(skb, NULL, arp_failure_discard);
798 BUG_ON(ep->mpa_skb);
799 ep->mpa_skb = skb;
800 c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
801 start_ep_timer(ep);
802 state_set(&ep->com, MPA_REQ_SENT);
803 ep->mpa_attr.initiator = 1;
804 return;
805}
806
807static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen)
808{
809 int mpalen, wrlen;
810 struct fw_ofld_tx_data_wr *req;
811 struct mpa_message *mpa;
812 struct sk_buff *skb;
d2fe99e8 813 struct mpa_v2_conn_params mpa_v2_params;
cfdda9d7
SW		 814
815 PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen);
816
817 mpalen = sizeof(*mpa) + plen;
d2fe99e8
KS		 818 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn)
819 mpalen += sizeof(struct mpa_v2_conn_params);
cfdda9d7
SW		 820 wrlen = roundup(mpalen + sizeof *req, 16);
821
822 skb = get_skb(NULL, wrlen, GFP_KERNEL);
823 if (!skb) {
824 printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__);
825 return -ENOMEM;
826 }
827 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
828
829 req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen);
830 memset(req, 0, wrlen);
831 req->op_to_immdlen = cpu_to_be32(
832 FW_WR_OP(FW_OFLD_TX_DATA_WR) |
833 FW_WR_COMPL(1) |
834 FW_WR_IMMDLEN(mpalen));
835 req->flowid_len16 = cpu_to_be32(
836 FW_WR_FLOWID(ep->hwtid) |
837 FW_WR_LEN16(wrlen >> 4));
838 req->plen = cpu_to_be32(mpalen);
839 req->tunnel_to_proxy = cpu_to_be32(
840 FW_OFLD_TX_DATA_WR_FLUSH(1) |
841 FW_OFLD_TX_DATA_WR_SHOVE(1));
842
843 mpa = (struct mpa_message *)(req + 1);
844 memset(mpa, 0, sizeof(*mpa));
845 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key));
846 mpa->flags = MPA_REJECT;
fe7e0a4d 847 mpa->revision = ep->mpa_attr.version;
cfdda9d7 848 mpa->private_data_size = htons(plen);
d2fe99e8
KS		 849
850 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
851 mpa->flags |= MPA_ENHANCED_RDMA_CONN;
f747c34a
RD		 852 mpa->private_data_size = htons(ntohs(mpa->private_data_size) +
853 sizeof (struct mpa_v2_conn_params));
d2fe99e8
KS		 854 mpa_v2_params.ird = htons(((u16)ep->ird) |
855 (peer2peer ? MPA_V2_PEER2PEER_MODEL :
856 0));
857 mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ?
858 (p2p_type ==
859 FW_RI_INIT_P2PTYPE_RDMA_WRITE ?
860 MPA_V2_RDMA_WRITE_RTR : p2p_type ==
861 FW_RI_INIT_P2PTYPE_READ_REQ ?
862 MPA_V2_RDMA_READ_RTR : 0) : 0));
863 memcpy(mpa->private_data, &mpa_v2_params,
864 sizeof(struct mpa_v2_conn_params));
865
866 if (ep->plen)
867 memcpy(mpa->private_data +
868 sizeof(struct mpa_v2_conn_params), pdata, plen);
869 } else
870 if (plen)
871 memcpy(mpa->private_data, pdata, plen);
cfdda9d7
SW		 872
873 /*
874 * Reference the mpa skb again. This ensures the data area
875 * will remain in memory until the hw acks the tx.
876 * Function fw4_ack() will deref it.
877 */
878 skb_get(skb);
879 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
880 t4_set_arp_err_handler(skb, NULL, arp_failure_discard);
881 BUG_ON(ep->mpa_skb);
882 ep->mpa_skb = skb;
883 return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
884}
885
886static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen)
887{
888 int mpalen, wrlen;
889 struct fw_ofld_tx_data_wr *req;
890 struct mpa_message *mpa;
891 struct sk_buff *skb;
d2fe99e8 892 struct mpa_v2_conn_params mpa_v2_params;
cfdda9d7
SW		 893
894 PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen);
895
896 mpalen = sizeof(*mpa) + plen;
d2fe99e8
KS		 897 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn)
898 mpalen += sizeof(struct mpa_v2_conn_params);
cfdda9d7
SW		 899 wrlen = roundup(mpalen + sizeof *req, 16);
900
901 skb = get_skb(NULL, wrlen, GFP_KERNEL);
902 if (!skb) {
903 printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__);
904 return -ENOMEM;
905 }
906 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
907
908 req = (struct fw_ofld_tx_data_wr *) skb_put(skb, wrlen);
909 memset(req, 0, wrlen);
910 req->op_to_immdlen = cpu_to_be32(
911 FW_WR_OP(FW_OFLD_TX_DATA_WR) |
912 FW_WR_COMPL(1) |
913 FW_WR_IMMDLEN(mpalen));
914 req->flowid_len16 = cpu_to_be32(
915 FW_WR_FLOWID(ep->hwtid) |
916 FW_WR_LEN16(wrlen >> 4));
917 req->plen = cpu_to_be32(mpalen);
918 req->tunnel_to_proxy = cpu_to_be32(
919 FW_OFLD_TX_DATA_WR_FLUSH(1) |
920 FW_OFLD_TX_DATA_WR_SHOVE(1));
921
922 mpa = (struct mpa_message *)(req + 1);
923 memset(mpa, 0, sizeof(*mpa));
924 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key));
925 mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) |
926 (markers_enabled ? MPA_MARKERS : 0);
d2fe99e8 927 mpa->revision = ep->mpa_attr.version;
cfdda9d7 928 mpa->private_data_size = htons(plen);
d2fe99e8
KS		 929
930 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
931 mpa->flags |= MPA_ENHANCED_RDMA_CONN;
f747c34a
RD		 932 mpa->private_data_size = htons(ntohs(mpa->private_data_size) +
933 sizeof (struct mpa_v2_conn_params));
d2fe99e8
KS		 934 mpa_v2_params.ird = htons((u16)ep->ird);
935 mpa_v2_params.ord = htons((u16)ep->ord);
936 if (peer2peer && (ep->mpa_attr.p2p_type !=
937 FW_RI_INIT_P2PTYPE_DISABLED)) {
938 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL);
939
940 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE)
941 mpa_v2_params.ord |=
942 htons(MPA_V2_RDMA_WRITE_RTR);
943 else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ)
944 mpa_v2_params.ord |=
945 htons(MPA_V2_RDMA_READ_RTR);
946 }
947
948 memcpy(mpa->private_data, &mpa_v2_params,
949 sizeof(struct mpa_v2_conn_params));
950
951 if (ep->plen)
952 memcpy(mpa->private_data +
953 sizeof(struct mpa_v2_conn_params), pdata, plen);
954 } else
955 if (plen)
956 memcpy(mpa->private_data, pdata, plen);
cfdda9d7
SW		 957
958 /*
959 * Reference the mpa skb. This ensures the data area
960 * will remain in memory until the hw acks the tx.
961 * Function fw4_ack() will deref it.
962 */
963 skb_get(skb);
964 t4_set_arp_err_handler(skb, NULL, arp_failure_discard);
965 ep->mpa_skb = skb;
966 state_set(&ep->com, MPA_REP_SENT);
967 return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
968}
969
970static int act_establish(struct c4iw_dev *dev, struct sk_buff *skb)
971{
972 struct c4iw_ep *ep;
973 struct cpl_act_establish *req = cplhdr(skb);
974 unsigned int tid = GET_TID(req);
975 unsigned int atid = GET_TID_TID(ntohl(req->tos_atid));
976 struct tid_info *t = dev->rdev.lldi.tids;
977
978 ep = lookup_atid(t, atid);
979
980 PDBG("%s ep %p tid %u snd_isn %u rcv_isn %u\n", __func__, ep, tid,
981 be32_to_cpu(req->snd_isn), be32_to_cpu(req->rcv_isn));
982
983 dst_confirm(ep->dst);
984
985 /* setup the hwtid for this connection */
986 ep->hwtid = tid;
987 cxgb4_insert_tid(t, ep, tid);
793dad94 988 insert_handle(dev, &dev->hwtid_idr, ep, ep->hwtid);
cfdda9d7
SW		 989
990 ep->snd_seq = be32_to_cpu(req->snd_isn);
991 ep->rcv_seq = be32_to_cpu(req->rcv_isn);
992
993 set_emss(ep, ntohs(req->tcp_opt));
994
995 /* dealloc the atid */
793dad94 996 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, atid);
cfdda9d7 997 cxgb4_free_atid(t, atid);
793dad94 998 set_bit(ACT_ESTAB, &ep->com.history);
cfdda9d7
SW		 999
1000 /* start MPA negotiation */
1001 send_flowc(ep, NULL);
d2fe99e8
KS		 1002 if (ep->retry_with_mpa_v1)
1003 send_mpa_req(ep, skb, 1);
1004 else
1005 send_mpa_req(ep, skb, mpa_rev);
cfdda9d7
SW		 1006
1007 return 0;
1008}
1009
1010static void close_complete_upcall(struct c4iw_ep *ep)
1011{
1012 struct iw_cm_event event;
1013
1014 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1015 memset(&event, 0, sizeof(event));
1016 event.event = IW_CM_EVENT_CLOSE;
1017 if (ep->com.cm_id) {
1018 PDBG("close complete delivered ep %p cm_id %p tid %u\n",
1019 ep, ep->com.cm_id, ep->hwtid);
1020 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1021 ep->com.cm_id->rem_ref(ep->com.cm_id);
1022 ep->com.cm_id = NULL;
793dad94 1023 set_bit(CLOSE_UPCALL, &ep->com.history);
cfdda9d7
SW		 1024 }
1025}
1026
1027static int abort_connection(struct c4iw_ep *ep, struct sk_buff *skb, gfp_t gfp)
1028{
1029 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1030 close_complete_upcall(ep);
1031 state_set(&ep->com, ABORTING);
793dad94 1032 set_bit(ABORT_CONN, &ep->com.history);
cfdda9d7
SW		 1033 return send_abort(ep, skb, gfp);
1034}
1035
1036static void peer_close_upcall(struct c4iw_ep *ep)
1037{
1038 struct iw_cm_event event;
1039
1040 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1041 memset(&event, 0, sizeof(event));
1042 event.event = IW_CM_EVENT_DISCONNECT;
1043 if (ep->com.cm_id) {
1044 PDBG("peer close delivered ep %p cm_id %p tid %u\n",
1045 ep, ep->com.cm_id, ep->hwtid);
1046 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
793dad94 1047 set_bit(DISCONN_UPCALL, &ep->com.history);
cfdda9d7
SW		 1048 }
1049}
1050
1051static void peer_abort_upcall(struct c4iw_ep *ep)
1052{
1053 struct iw_cm_event event;
1054
1055 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1056 memset(&event, 0, sizeof(event));
1057 event.event = IW_CM_EVENT_CLOSE;
1058 event.status = -ECONNRESET;
1059 if (ep->com.cm_id) {
1060 PDBG("abort delivered ep %p cm_id %p tid %u\n", ep,
1061 ep->com.cm_id, ep->hwtid);
1062 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1063 ep->com.cm_id->rem_ref(ep->com.cm_id);
1064 ep->com.cm_id = NULL;
793dad94 1065 set_bit(ABORT_UPCALL, &ep->com.history);
cfdda9d7
SW		 1066 }
1067}
1068
1069static void connect_reply_upcall(struct c4iw_ep *ep, int status)
1070{
1071 struct iw_cm_event event;
1072
1073 PDBG("%s ep %p tid %u status %d\n", __func__, ep, ep->hwtid, status);
1074 memset(&event, 0, sizeof(event));
1075 event.event = IW_CM_EVENT_CONNECT_REPLY;
1076 event.status = status;
24d44a39
SW		 1077 memcpy(&event.local_addr, &ep->com.local_addr,
1078 sizeof(ep->com.local_addr));
1079 memcpy(&event.remote_addr, &ep->com.remote_addr,
1080 sizeof(ep->com.remote_addr));
cfdda9d7
SW		 1081
1082 if ((status == 0) || (status == -ECONNREFUSED)) {
d2fe99e8
KS		 1083 if (!ep->tried_with_mpa_v1) {
1084 /* this means MPA_v2 is used */
1085 event.private_data_len = ep->plen -
1086 sizeof(struct mpa_v2_conn_params);
1087 event.private_data = ep->mpa_pkt +
1088 sizeof(struct mpa_message) +
1089 sizeof(struct mpa_v2_conn_params);
1090 } else {
1091 /* this means MPA_v1 is used */
1092 event.private_data_len = ep->plen;
1093 event.private_data = ep->mpa_pkt +
1094 sizeof(struct mpa_message);
1095 }
cfdda9d7 1096 }
85963e4c
RD		 1097
1098 PDBG("%s ep %p tid %u status %d\n", __func__, ep,
1099 ep->hwtid, status);
793dad94 1100 set_bit(CONN_RPL_UPCALL, &ep->com.history);
85963e4c
RD		 1101 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1102
cfdda9d7
SW		 1103 if (status < 0) {
1104 ep->com.cm_id->rem_ref(ep->com.cm_id);
1105 ep->com.cm_id = NULL;
cfdda9d7
SW		 1106 }
1107}
1108
1109static void connect_request_upcall(struct c4iw_ep *ep)
1110{
1111 struct iw_cm_event event;
1112
1113 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1114 memset(&event, 0, sizeof(event));
1115 event.event = IW_CM_EVENT_CONNECT_REQUEST;
24d44a39
SW		 1116 memcpy(&event.local_addr, &ep->com.local_addr,
1117 sizeof(ep->com.local_addr));
1118 memcpy(&event.remote_addr, &ep->com.remote_addr,
1119 sizeof(ep->com.remote_addr));
cfdda9d7 1120 event.provider_data = ep;
d2fe99e8
KS		 1121 if (!ep->tried_with_mpa_v1) {
1122 /* this means MPA_v2 is used */
1123 event.ord = ep->ord;
1124 event.ird = ep->ird;
1125 event.private_data_len = ep->plen -
1126 sizeof(struct mpa_v2_conn_params);
1127 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) +
1128 sizeof(struct mpa_v2_conn_params);
1129 } else {
1130 /* this means MPA_v1 is used. Send max supported */
1131 event.ord = c4iw_max_read_depth;
1132 event.ird = c4iw_max_read_depth;
1133 event.private_data_len = ep->plen;
1134 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message);
1135 }
cfdda9d7
SW		 1136 if (state_read(&ep->parent_ep->com) != DEAD) {
1137 c4iw_get_ep(&ep->com);
1138 ep->parent_ep->com.cm_id->event_handler(
1139 ep->parent_ep->com.cm_id,
1140 &event);
1141 }
793dad94 1142 set_bit(CONNREQ_UPCALL, &ep->com.history);
cfdda9d7
SW		 1143 c4iw_put_ep(&ep->parent_ep->com);
1144 ep->parent_ep = NULL;
1145}
1146
1147static void established_upcall(struct c4iw_ep *ep)
1148{
1149 struct iw_cm_event event;
1150
1151 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1152 memset(&event, 0, sizeof(event));
1153 event.event = IW_CM_EVENT_ESTABLISHED;
d2fe99e8
KS		 1154 event.ird = ep->ird;
1155 event.ord = ep->ord;
cfdda9d7
SW		 1156 if (ep->com.cm_id) {
1157 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1158 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
793dad94 1159 set_bit(ESTAB_UPCALL, &ep->com.history);
cfdda9d7
SW		 1160 }
1161}
1162
1163static int update_rx_credits(struct c4iw_ep *ep, u32 credits)
1164{
1165 struct cpl_rx_data_ack *req;
1166 struct sk_buff *skb;
1167 int wrlen = roundup(sizeof *req, 16);
1168
1169 PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits);
1170 skb = get_skb(NULL, wrlen, GFP_KERNEL);
1171 if (!skb) {
1172 printk(KERN_ERR MOD "update_rx_credits - cannot alloc skb!\n");
1173 return 0;
1174 }
1175
1176 req = (struct cpl_rx_data_ack *) skb_put(skb, wrlen);
1177 memset(req, 0, wrlen);
1178 INIT_TP_WR(req, ep->hwtid);
1179 OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_RX_DATA_ACK,
1180 ep->hwtid));
ba6d3925
SW		 1181 req->credit_dack = cpu_to_be32(credits | RX_FORCE_ACK(1) |
1182 F_RX_DACK_CHANGE |
1183 V_RX_DACK_MODE(dack_mode));
d4f1a5c6 1184 set_wr_txq(skb, CPL_PRIORITY_ACK, ep->ctrlq_idx);
cfdda9d7
SW		 1185 c4iw_ofld_send(&ep->com.dev->rdev, skb);
1186 return credits;
1187}
1188
1189static void process_mpa_reply(struct c4iw_ep *ep, struct sk_buff *skb)
1190{
1191 struct mpa_message *mpa;
d2fe99e8 1192 struct mpa_v2_conn_params *mpa_v2_params;
cfdda9d7 1193 u16 plen;
d2fe99e8
KS		 1194 u16 resp_ird, resp_ord;
1195 u8 rtr_mismatch = 0, insuff_ird = 0;
cfdda9d7
SW		 1196 struct c4iw_qp_attributes attrs;
1197 enum c4iw_qp_attr_mask mask;
1198 int err;
1199
1200 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1201
1202 /*
1203 * Stop mpa timer. If it expired, then the state has
1204 * changed and we bail since ep_timeout already aborted
1205 * the connection.
1206 */
1207 stop_ep_timer(ep);
1208 if (state_read(&ep->com) != MPA_REQ_SENT)
1209 return;
1210
1211 /*
1212 * If we get more than the supported amount of private data
1213 * then we must fail this connection.
1214 */
1215 if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) {
1216 err = -EINVAL;
1217 goto err;
1218 }
1219
1220 /*
1221 * copy the new data into our accumulation buffer.
1222 */
1223 skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]),
1224 skb->len);
1225 ep->mpa_pkt_len += skb->len;
1226
1227 /*
1228 * if we don't even have the mpa message, then bail.
1229 */
1230 if (ep->mpa_pkt_len < sizeof(*mpa))
1231 return;
1232 mpa = (struct mpa_message *) ep->mpa_pkt;
1233
1234 /* Validate MPA header. */
d2fe99e8
KS		 1235 if (mpa->revision > mpa_rev) {
1236 printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d,"
1237 " Received = %d\n", __func__, mpa_rev, mpa->revision);
cfdda9d7
SW		 1238 err = -EPROTO;
1239 goto err;
1240 }
1241 if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) {
1242 err = -EPROTO;
1243 goto err;
1244 }
1245
1246 plen = ntohs(mpa->private_data_size);
1247
1248 /*
1249 * Fail if there's too much private data.
1250 */
1251 if (plen > MPA_MAX_PRIVATE_DATA) {
1252 err = -EPROTO;
1253 goto err;
1254 }
1255
1256 /*
1257 * If plen does not account for pkt size
1258 */
1259 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) {
1260 err = -EPROTO;
1261 goto err;
1262 }
1263
1264 ep->plen = (u8) plen;
1265
1266 /*
1267 * If we don't have all the pdata yet, then bail.
1268 * We'll continue process when more data arrives.
1269 */
1270 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen))
1271 return;
1272
1273 if (mpa->flags & MPA_REJECT) {
1274 err = -ECONNREFUSED;
1275 goto err;
1276 }
1277
1278 /*
1279 * If we get here we have accumulated the entire mpa
1280 * start reply message including private data. And
1281 * the MPA header is valid.
1282 */
1283 state_set(&ep->com, FPDU_MODE);
1284 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0;
1285 ep->mpa_attr.recv_marker_enabled = markers_enabled;
1286 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0;
d2fe99e8
KS		 1287 ep->mpa_attr.version = mpa->revision;
1288 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
1289
1290 if (mpa->revision == 2) {
1291 ep->mpa_attr.enhanced_rdma_conn =
1292 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0;
1293 if (ep->mpa_attr.enhanced_rdma_conn) {
1294 mpa_v2_params = (struct mpa_v2_conn_params *)
1295 (ep->mpa_pkt + sizeof(*mpa));
1296 resp_ird = ntohs(mpa_v2_params->ird) &
1297 MPA_V2_IRD_ORD_MASK;
1298 resp_ord = ntohs(mpa_v2_params->ord) &
1299 MPA_V2_IRD_ORD_MASK;
1300
1301 /*
1302 * This is a double-check. Ideally, below checks are
1303 * not required since ird/ord stuff has been taken
1304 * care of in c4iw_accept_cr
1305 */
1306 if ((ep->ird < resp_ord) || (ep->ord > resp_ird)) {
1307 err = -ENOMEM;
1308 ep->ird = resp_ord;
1309 ep->ord = resp_ird;
1310 insuff_ird = 1;
1311 }
1312
1313 if (ntohs(mpa_v2_params->ird) &
1314 MPA_V2_PEER2PEER_MODEL) {
1315 if (ntohs(mpa_v2_params->ord) &
1316 MPA_V2_RDMA_WRITE_RTR)
1317 ep->mpa_attr.p2p_type =
1318 FW_RI_INIT_P2PTYPE_RDMA_WRITE;
1319 else if (ntohs(mpa_v2_params->ord) &
1320 MPA_V2_RDMA_READ_RTR)
1321 ep->mpa_attr.p2p_type =
1322 FW_RI_INIT_P2PTYPE_READ_REQ;
1323 }
1324 }
1325 } else if (mpa->revision == 1)
1326 if (peer2peer)
1327 ep->mpa_attr.p2p_type = p2p_type;
1328
cfdda9d7 1329 PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, "
d2fe99e8
KS		 1330 "xmit_marker_enabled=%d, version=%d p2p_type=%d local-p2p_type = "
1331 "%d\n", __func__, ep->mpa_attr.crc_enabled,
1332 ep->mpa_attr.recv_marker_enabled,
1333 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version,
1334 ep->mpa_attr.p2p_type, p2p_type);
1335
1336 /*
1337 * If responder's RTR does not match with that of initiator, assign
1338 * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not
1339 * generated when moving QP to RTS state.
1340 * A TERM message will be sent after QP has moved to RTS state
1341 */
91018f86 1342 if ((ep->mpa_attr.version == 2) && peer2peer &&
d2fe99e8
KS		 1343 (ep->mpa_attr.p2p_type != p2p_type)) {
1344 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
1345 rtr_mismatch = 1;
1346 }
cfdda9d7
SW		 1347
1348 attrs.mpa_attr = ep->mpa_attr;
1349 attrs.max_ird = ep->ird;
1350 attrs.max_ord = ep->ord;
1351 attrs.llp_stream_handle = ep;
1352 attrs.next_state = C4IW_QP_STATE_RTS;
1353
1354 mask = C4IW_QP_ATTR_NEXT_STATE |
1355 C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR |
1356 C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD;
1357
1358 /* bind QP and TID with INIT_WR */
1359 err = c4iw_modify_qp(ep->com.qp->rhp,
1360 ep->com.qp, mask, &attrs, 1);
1361 if (err)
1362 goto err;
d2fe99e8
KS		 1363
1364 /*
1365 * If responder's RTR requirement did not match with what initiator
1366 * supports, generate TERM message
1367 */
1368 if (rtr_mismatch) {
1369 printk(KERN_ERR "%s: RTR mismatch, sending TERM\n", __func__);
1370 attrs.layer_etype = LAYER_MPA | DDP_LLP;
1371 attrs.ecode = MPA_NOMATCH_RTR;
1372 attrs.next_state = C4IW_QP_STATE_TERMINATE;
1373 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
1374 C4IW_QP_ATTR_NEXT_STATE, &attrs, 0);
1375 err = -ENOMEM;
1376 goto out;
1377 }
1378
1379 /*
1380 * Generate TERM if initiator IRD is not sufficient for responder
1381 * provided ORD. Currently, we do the same behaviour even when
1382 * responder provided IRD is also not sufficient as regards to
1383 * initiator ORD.
1384 */
1385 if (insuff_ird) {
1386 printk(KERN_ERR "%s: Insufficient IRD, sending TERM\n",
1387 __func__);
1388 attrs.layer_etype = LAYER_MPA | DDP_LLP;
1389 attrs.ecode = MPA_INSUFF_IRD;
1390 attrs.next_state = C4IW_QP_STATE_TERMINATE;
1391 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
1392 C4IW_QP_ATTR_NEXT_STATE, &attrs, 0);
1393 err = -ENOMEM;
1394 goto out;
1395 }
cfdda9d7
SW		 1396 goto out;
1397err:
b21ef16a
SW		 1398 state_set(&ep->com, ABORTING);
1399 send_abort(ep, skb, GFP_KERNEL);
cfdda9d7
SW		 1400out:
1401 connect_reply_upcall(ep, err);
1402 return;
1403}
1404
1405static void process_mpa_request(struct c4iw_ep *ep, struct sk_buff *skb)
1406{
1407 struct mpa_message *mpa;
d2fe99e8 1408 struct mpa_v2_conn_params *mpa_v2_params;
cfdda9d7
SW		 1409 u16 plen;
1410
1411 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1412
1413 if (state_read(&ep->com) != MPA_REQ_WAIT)
1414 return;
1415
1416 /*
1417 * If we get more than the supported amount of private data
1418 * then we must fail this connection.
1419 */
1420 if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) {
1421 stop_ep_timer(ep);
1422 abort_connection(ep, skb, GFP_KERNEL);
1423 return;
1424 }
1425
1426 PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__);
1427
1428 /*
1429 * Copy the new data into our accumulation buffer.
1430 */
1431 skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]),
1432 skb->len);
1433 ep->mpa_pkt_len += skb->len;
1434
1435 /*
1436 * If we don't even have the mpa message, then bail.
1437 * We'll continue process when more data arrives.
1438 */
1439 if (ep->mpa_pkt_len < sizeof(*mpa))
1440 return;
1441
1442 PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__);
1443 stop_ep_timer(ep);
1444 mpa = (struct mpa_message *) ep->mpa_pkt;
1445
1446 /*
1447 * Validate MPA Header.
1448 */
d2fe99e8
KS		 1449 if (mpa->revision > mpa_rev) {
1450 printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d,"
1451 " Received = %d\n", __func__, mpa_rev, mpa->revision);
7c0a33d6 1452 stop_ep_timer(ep);
cfdda9d7
SW		 1453 abort_connection(ep, skb, GFP_KERNEL);
1454 return;
1455 }
1456
1457 if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) {
7c0a33d6 1458 stop_ep_timer(ep);
cfdda9d7
SW		 1459 abort_connection(ep, skb, GFP_KERNEL);
1460 return;
1461 }
1462
1463 plen = ntohs(mpa->private_data_size);
1464
1465 /*
1466 * Fail if there's too much private data.
1467 */
1468 if (plen > MPA_MAX_PRIVATE_DATA) {
7c0a33d6 1469 stop_ep_timer(ep);
cfdda9d7
SW		 1470 abort_connection(ep, skb, GFP_KERNEL);
1471 return;
1472 }
1473
1474 /*
1475 * If plen does not account for pkt size
1476 */
1477 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) {
7c0a33d6 1478 stop_ep_timer(ep);
cfdda9d7
SW		 1479 abort_connection(ep, skb, GFP_KERNEL);
1480 return;
1481 }
1482 ep->plen = (u8) plen;
1483
1484 /*
1485 * If we don't have all the pdata yet, then bail.
1486 */
1487 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen))
1488 return;
1489
1490 /*
1491 * If we get here we have accumulated the entire mpa
1492 * start reply message including private data.
1493 */
1494 ep->mpa_attr.initiator = 0;
1495 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0;
1496 ep->mpa_attr.recv_marker_enabled = markers_enabled;
1497 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0;
d2fe99e8
KS		 1498 ep->mpa_attr.version = mpa->revision;
1499 if (mpa->revision == 1)
1500 ep->tried_with_mpa_v1 = 1;
1501 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
1502
1503 if (mpa->revision == 2) {
1504 ep->mpa_attr.enhanced_rdma_conn =
1505 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0;
1506 if (ep->mpa_attr.enhanced_rdma_conn) {
1507 mpa_v2_params = (struct mpa_v2_conn_params *)
1508 (ep->mpa_pkt + sizeof(*mpa));
1509 ep->ird = ntohs(mpa_v2_params->ird) &
1510 MPA_V2_IRD_ORD_MASK;
1511 ep->ord = ntohs(mpa_v2_params->ord) &
1512 MPA_V2_IRD_ORD_MASK;
1513 if (ntohs(mpa_v2_params->ird) & MPA_V2_PEER2PEER_MODEL)
1514 if (peer2peer) {
1515 if (ntohs(mpa_v2_params->ord) &
1516 MPA_V2_RDMA_WRITE_RTR)
1517 ep->mpa_attr.p2p_type =
1518 FW_RI_INIT_P2PTYPE_RDMA_WRITE;
1519 else if (ntohs(mpa_v2_params->ord) &
1520 MPA_V2_RDMA_READ_RTR)
1521 ep->mpa_attr.p2p_type =
1522 FW_RI_INIT_P2PTYPE_READ_REQ;
1523 }
1524 }
1525 } else if (mpa->revision == 1)
1526 if (peer2peer)
1527 ep->mpa_attr.p2p_type = p2p_type;
1528
cfdda9d7
SW		 1529 PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, "
1530 "xmit_marker_enabled=%d, version=%d p2p_type=%d\n", __func__,
1531 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled,
1532 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version,
1533 ep->mpa_attr.p2p_type);
1534
1535 state_set(&ep->com, MPA_REQ_RCVD);
1536
1537 /* drive upcall */
1538 connect_request_upcall(ep);
1539 return;
1540}
1541
1542static int rx_data(struct c4iw_dev *dev, struct sk_buff *skb)
1543{
1544 struct c4iw_ep *ep;
1545 struct cpl_rx_data *hdr = cplhdr(skb);
1546 unsigned int dlen = ntohs(hdr->len);
1547 unsigned int tid = GET_TID(hdr);
1548 struct tid_info *t = dev->rdev.lldi.tids;
793dad94 1549 __u8 status = hdr->status;
cfdda9d7
SW		 1550
1551 ep = lookup_tid(t, tid);
1552 PDBG("%s ep %p tid %u dlen %u\n", __func__, ep, ep->hwtid, dlen);
1553 skb_pull(skb, sizeof(*hdr));
1554 skb_trim(skb, dlen);
1555
cfdda9d7
SW		 1556 /* update RX credits */
1557 update_rx_credits(ep, dlen);
1558
1559 switch (state_read(&ep->com)) {
1560 case MPA_REQ_SENT:
55abf8df 1561 ep->rcv_seq += dlen;
cfdda9d7
SW		 1562 process_mpa_reply(ep, skb);
1563 break;
1564 case MPA_REQ_WAIT:
55abf8df 1565 ep->rcv_seq += dlen;
cfdda9d7
SW		 1566 process_mpa_request(ep, skb);
1567 break;
1557967b
VP		 1568 case FPDU_MODE: {
1569 struct c4iw_qp_attributes attrs;
1570 BUG_ON(!ep->com.qp);
e8e5b927 1571 if (status)
1557967b 1572 pr_err("%s Unexpected streaming data." \
04236df2
VP		 1573 " qpid %u ep %p state %d tid %u status %d\n",
1574 __func__, ep->com.qp->wq.sq.qid, ep,
1575 state_read(&ep->com), ep->hwtid, status);
97d7ec0c 1576 attrs.next_state = C4IW_QP_STATE_TERMINATE;
1557967b 1577 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
97d7ec0c 1578 C4IW_QP_ATTR_NEXT_STATE, &attrs, 0);
cfdda9d7
SW		 1579 break;
1580 }
1557967b
VP		 1581 default:
1582 break;
1583 }
cfdda9d7
SW		 1584 return 0;
1585}
1586
1587static int abort_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
1588{
1589 struct c4iw_ep *ep;
1590 struct cpl_abort_rpl_rss *rpl = cplhdr(skb);
cfdda9d7
SW		 1591 int release = 0;
1592 unsigned int tid = GET_TID(rpl);
1593 struct tid_info *t = dev->rdev.lldi.tids;
1594
1595 ep = lookup_tid(t, tid);
4984037b
VP		 1596 if (!ep) {
1597 printk(KERN_WARNING MOD "Abort rpl to freed endpoint\n");
1598 return 0;
1599 }
92dd6c3d 1600 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
2f5b48c3 1601 mutex_lock(&ep->com.mutex);
cfdda9d7
SW		 1602 switch (ep->com.state) {
1603 case ABORTING:
91e9c071 1604 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
cfdda9d7
SW		 1605 __state_set(&ep->com, DEAD);
1606 release = 1;
1607 break;
1608 default:
1609 printk(KERN_ERR "%s ep %p state %d\n",
1610 __func__, ep, ep->com.state);
1611 break;
1612 }
2f5b48c3 1613 mutex_unlock(&ep->com.mutex);
cfdda9d7
SW		 1614
1615 if (release)
1616 release_ep_resources(ep);
1617 return 0;
1618}
1619
5be78ee9
VP		 1620static void send_fw_act_open_req(struct c4iw_ep *ep, unsigned int atid)
1621{
1622 struct sk_buff *skb;
1623 struct fw_ofld_connection_wr *req;
1624 unsigned int mtu_idx;
1625 int wscale;
830662f6 1626 struct sockaddr_in *sin;
5be78ee9
VP		 1627
1628 skb = get_skb(NULL, sizeof(*req), GFP_KERNEL);
1629 req = (struct fw_ofld_connection_wr *)__skb_put(skb, sizeof(*req));
1630 memset(req, 0, sizeof(*req));
1631 req->op_compl = htonl(V_WR_OP(FW_OFLD_CONNECTION_WR));
1632 req->len16_pkd = htonl(FW_WR_LEN16(DIV_ROUND_UP(sizeof(*req), 16)));
1633 req->le.filter = cpu_to_be32(select_ntuple(ep->com.dev, ep->dst,
1634 ep->l2t));
830662f6
VP		 1635 sin = (struct sockaddr_in *)&ep->com.local_addr;
1636 req->le.lport = sin->sin_port;
1637 req->le.u.ipv4.lip = sin->sin_addr.s_addr;
1638 sin = (struct sockaddr_in *)&ep->com.remote_addr;
1639 req->le.pport = sin->sin_port;
1640 req->le.u.ipv4.pip = sin->sin_addr.s_addr;
5be78ee9
VP		 1641 req->tcb.t_state_to_astid =
1642 htonl(V_FW_OFLD_CONNECTION_WR_T_STATE(TCP_SYN_SENT) |
1643 V_FW_OFLD_CONNECTION_WR_ASTID(atid));
1644 req->tcb.cplrxdataack_cplpassacceptrpl =
1645 htons(F_FW_OFLD_CONNECTION_WR_CPLRXDATAACK);
ef5d6355 1646 req->tcb.tx_max = (__force __be32) jiffies;
793dad94 1647 req->tcb.rcv_adv = htons(1);
5be78ee9
VP		 1648 cxgb4_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx);
1649 wscale = compute_wscale(rcv_win);
ef5d6355 1650 req->tcb.opt0 = (__force __be64) (TCAM_BYPASS(1) |
5be78ee9
VP		 1651 (nocong ? NO_CONG(1) : 0) |
1652 KEEP_ALIVE(1) |
1653 DELACK(1) |
1654 WND_SCALE(wscale) |
1655 MSS_IDX(mtu_idx) |
1656 L2T_IDX(ep->l2t->idx) |
1657 TX_CHAN(ep->tx_chan) |
1658 SMAC_SEL(ep->smac_idx) |
1659 DSCP(ep->tos) |
1660 ULP_MODE(ULP_MODE_TCPDDP) |
ef5d6355
VP		 1661 RCV_BUFSIZ(rcv_win >> 10));
1662 req->tcb.opt2 = (__force __be32) (PACE(1) |
5be78ee9
VP		 1663 TX_QUEUE(ep->com.dev->rdev.lldi.tx_modq[ep->tx_chan]) |
1664 RX_CHANNEL(0) |
1665 CCTRL_ECN(enable_ecn) |
ef5d6355 1666 RSS_QUEUE_VALID | RSS_QUEUE(ep->rss_qid));
5be78ee9 1667 if (enable_tcp_timestamps)
ef5d6355 1668 req->tcb.opt2 |= (__force __be32) TSTAMPS_EN(1);
5be78ee9 1669 if (enable_tcp_sack)
ef5d6355 1670 req->tcb.opt2 |= (__force __be32) SACK_EN(1);
5be78ee9 1671 if (wscale && enable_tcp_window_scaling)
ef5d6355
VP		 1672 req->tcb.opt2 |= (__force __be32) WND_SCALE_EN(1);
1673 req->tcb.opt0 = cpu_to_be64((__force u64) req->tcb.opt0);
1674 req->tcb.opt2 = cpu_to_be32((__force u32) req->tcb.opt2);
793dad94
VP		 1675 set_wr_txq(skb, CPL_PRIORITY_CONTROL, ep->ctrlq_idx);
1676 set_bit(ACT_OFLD_CONN, &ep->com.history);
5be78ee9
VP		 1677 c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
1678}
1679
cfdda9d7
SW		 1680/*
1681 * Return whether a failed active open has allocated a TID
1682 */
1683static inline int act_open_has_tid(int status)
1684{
1685 return status != CPL_ERR_TCAM_FULL && status != CPL_ERR_CONN_EXIST &&
1686 status != CPL_ERR_ARP_MISS;
1687}
1688
793dad94
VP		 1689#define ACT_OPEN_RETRY_COUNT 2
1690
830662f6
VP		 1691static int import_ep(struct c4iw_ep *ep, int iptype, __u8 *peer_ip,
1692 struct dst_entry *dst, struct c4iw_dev *cdev,
1693 bool clear_mpa_v1)
1694{
1695 struct neighbour *n;
1696 int err, step;
1697 struct net_device *pdev;
1698
1699 n = dst_neigh_lookup(dst, peer_ip);
1700 if (!n)
1701 return -ENODEV;
1702
1703 rcu_read_lock();
1704 err = -ENOMEM;
1705 if (n->dev->flags & IFF_LOOPBACK) {
1706 if (iptype == 4)
1707 pdev = ip_dev_find(&init_net, *(__be32 *)peer_ip);
1708 else if (IS_ENABLED(CONFIG_IPV6))
1709 for_each_netdev(&init_net, pdev) {
1710 if (ipv6_chk_addr(&init_net,
1711 (struct in6_addr *)peer_ip,
1712 pdev, 1))
1713 break;
1714 }
1715 else
1716 pdev = NULL;
1717
1718 if (!pdev) {
1719 err = -ENODEV;
1720 goto out;
1721 }
1722 ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t,
1723 n, pdev, 0);
1724 if (!ep->l2t)
1725 goto out;
1726 ep->mtu = pdev->mtu;
1727 ep->tx_chan = cxgb4_port_chan(pdev);
1728 ep->smac_idx = (cxgb4_port_viid(pdev) & 0x7F) << 1;
1729 step = cdev->rdev.lldi.ntxq /
1730 cdev->rdev.lldi.nchan;
1731 ep->txq_idx = cxgb4_port_idx(pdev) * step;
1732 step = cdev->rdev.lldi.nrxq /
1733 cdev->rdev.lldi.nchan;
1734 ep->ctrlq_idx = cxgb4_port_idx(pdev);
1735 ep->rss_qid = cdev->rdev.lldi.rxq_ids[
1736 cxgb4_port_idx(pdev) * step];
1737 dev_put(pdev);
1738 } else {
1739 pdev = get_real_dev(n->dev);
1740 ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t,
1741 n, pdev, 0);
1742 if (!ep->l2t)
1743 goto out;
1744 ep->mtu = dst_mtu(dst);
1745 ep->tx_chan = cxgb4_port_chan(n->dev);
1746 ep->smac_idx = (cxgb4_port_viid(n->dev) & 0x7F) << 1;
1747 step = cdev->rdev.lldi.ntxq /
1748 cdev->rdev.lldi.nchan;
1749 ep->txq_idx = cxgb4_port_idx(n->dev) * step;
1750 ep->ctrlq_idx = cxgb4_port_idx(n->dev);
1751 step = cdev->rdev.lldi.nrxq /
1752 cdev->rdev.lldi.nchan;
1753 ep->rss_qid = cdev->rdev.lldi.rxq_ids[
1754 cxgb4_port_idx(n->dev) * step];
1755
1756 if (clear_mpa_v1) {
1757 ep->retry_with_mpa_v1 = 0;
1758 ep->tried_with_mpa_v1 = 0;
1759 }
1760 }
1761 err = 0;
1762out:
1763 rcu_read_unlock();
1764
1765 neigh_release(n);
1766
1767 return err;
1768}
1769
793dad94
VP		 1770static int c4iw_reconnect(struct c4iw_ep *ep)
1771{
1772 int err = 0;
24d44a39
SW		 1773 struct sockaddr_in *laddr = (struct sockaddr_in *)
1774 &ep->com.cm_id->local_addr;
1775 struct sockaddr_in *raddr = (struct sockaddr_in *)
1776 &ep->com.cm_id->remote_addr;
830662f6
VP		 1777 struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *)
1778 &ep->com.cm_id->local_addr;
1779 struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)
1780 &ep->com.cm_id->remote_addr;
1781 int iptype;
1782 __u8 *ra;
793dad94
VP		 1783
1784 PDBG("%s qp %p cm_id %p\n", __func__, ep->com.qp, ep->com.cm_id);
1785 init_timer(&ep->timer);
1786
1787 /*
1788 * Allocate an active TID to initiate a TCP connection.
1789 */
1790 ep->atid = cxgb4_alloc_atid(ep->com.dev->rdev.lldi.tids, ep);
1791 if (ep->atid == -1) {
1792 pr_err("%s - cannot alloc atid.\n", __func__);
1793 err = -ENOMEM;
1794 goto fail2;
1795 }
1796 insert_handle(ep->com.dev, &ep->com.dev->atid_idr, ep, ep->atid);
1797
1798 /* find a route */
830662f6
VP		 1799 if (ep->com.cm_id->local_addr.ss_family == AF_INET) {
1800 ep->dst = find_route(ep->com.dev, laddr->sin_addr.s_addr,
1801 raddr->sin_addr.s_addr, laddr->sin_port,
1802 raddr->sin_port, 0);
1803 iptype = 4;
1804 ra = (__u8 *)&raddr->sin_addr;
1805 } else {
1806 ep->dst = find_route6(ep->com.dev, laddr6->sin6_addr.s6_addr,
1807 raddr6->sin6_addr.s6_addr,
1808 laddr6->sin6_port, raddr6->sin6_port, 0,
1809 raddr6->sin6_scope_id);
1810 iptype = 6;
1811 ra = (__u8 *)&raddr6->sin6_addr;
1812 }
1813 if (!ep->dst) {
793dad94
VP		 1814 pr_err("%s - cannot find route.\n", __func__);
1815 err = -EHOSTUNREACH;
1816 goto fail3;
1817 }
830662f6
VP		 1818 err = import_ep(ep, iptype, ra, ep->dst, ep->com.dev, false);
1819 if (err) {
793dad94 1820 pr_err("%s - cannot alloc l2e.\n", __func__);
793dad94
VP		 1821 goto fail4;
1822 }
1823
1824 PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n",
1825 __func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid,
1826 ep->l2t->idx);
1827
1828 state_set(&ep->com, CONNECTING);
1829 ep->tos = 0;
1830
1831 /* send connect request to rnic */
1832 err = send_connect(ep);
1833 if (!err)
1834 goto out;
1835
1836 cxgb4_l2t_release(ep->l2t);
1837fail4:
1838 dst_release(ep->dst);
1839fail3:
1840 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid);
1841 cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid);
1842fail2:
1843 /*
1844 * remember to send notification to upper layer.
1845 * We are in here so the upper layer is not aware that this is
1846 * re-connect attempt and so, upper layer is still waiting for
1847 * response of 1st connect request.
1848 */
1849 connect_reply_upcall(ep, -ECONNRESET);
1850 c4iw_put_ep(&ep->com);
1851out:
1852 return err;
1853}
1854
cfdda9d7
SW		 1855static int act_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
1856{
1857 struct c4iw_ep *ep;
1858 struct cpl_act_open_rpl *rpl = cplhdr(skb);
1859 unsigned int atid = GET_TID_TID(GET_AOPEN_ATID(
1860 ntohl(rpl->atid_status)));
1861 struct tid_info *t = dev->rdev.lldi.tids;
1862 int status = GET_AOPEN_STATUS(ntohl(rpl->atid_status));
830662f6
VP		 1863 struct sockaddr_in *la;
1864 struct sockaddr_in *ra;
1865 struct sockaddr_in6 *la6;
1866 struct sockaddr_in6 *ra6;
cfdda9d7
SW		 1867
1868 ep = lookup_atid(t, atid);
830662f6
VP		 1869 la = (struct sockaddr_in *)&ep->com.local_addr;
1870 ra = (struct sockaddr_in *)&ep->com.remote_addr;
1871 la6 = (struct sockaddr_in6 *)&ep->com.local_addr;
1872 ra6 = (struct sockaddr_in6 *)&ep->com.remote_addr;
cfdda9d7
SW		 1873
1874 PDBG("%s ep %p atid %u status %u errno %d\n", __func__, ep, atid,
1875 status, status2errno(status));
1876
1877 if (status == CPL_ERR_RTX_NEG_ADVICE) {
1878 printk(KERN_WARNING MOD "Connection problems for atid %u\n",
1879 atid);
1880 return 0;
1881 }
1882
793dad94
VP		 1883 set_bit(ACT_OPEN_RPL, &ep->com.history);
1884
d716a2a0
VP		 1885 /*
1886 * Log interesting failures.
1887 */
1888 switch (status) {
1889 case CPL_ERR_CONN_RESET:
1890 case CPL_ERR_CONN_TIMEDOUT:
1891 break;
5be78ee9 1892 case CPL_ERR_TCAM_FULL:
830662f6 1893 mutex_lock(&dev->rdev.stats.lock);
3b174d94 1894 dev->rdev.stats.tcam_full++;
830662f6
VP		 1895 mutex_unlock(&dev->rdev.stats.lock);
1896 if (ep->com.local_addr.ss_family == AF_INET &&
1897 dev->rdev.lldi.enable_fw_ofld_conn) {
793dad94
VP		 1898 send_fw_act_open_req(ep,
1899 GET_TID_TID(GET_AOPEN_ATID(
1900 ntohl(rpl->atid_status))));
1901 return 0;
1902 }
1903 break;
1904 case CPL_ERR_CONN_EXIST:
1905 if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) {
1906 set_bit(ACT_RETRY_INUSE, &ep->com.history);
1907 remove_handle(ep->com.dev, &ep->com.dev->atid_idr,
1908 atid);
1909 cxgb4_free_atid(t, atid);
1910 dst_release(ep->dst);
1911 cxgb4_l2t_release(ep->l2t);
1912 c4iw_reconnect(ep);
1913 return 0;
1914 }
5be78ee9 1915 break;
d716a2a0 1916 default:
830662f6
VP		 1917 if (ep->com.local_addr.ss_family == AF_INET) {
1918 pr_info("Active open failure - atid %u status %u errno %d %pI4:%u->%pI4:%u\n",
1919 atid, status, status2errno(status),
1920 &la->sin_addr.s_addr, ntohs(la->sin_port),
1921 &ra->sin_addr.s_addr, ntohs(ra->sin_port));
1922 } else {
1923 pr_info("Active open failure - atid %u status %u errno %d %pI6:%u->%pI6:%u\n",
1924 atid, status, status2errno(status),
1925 la6->sin6_addr.s6_addr, ntohs(la6->sin6_port),
1926 ra6->sin6_addr.s6_addr, ntohs(ra6->sin6_port));
1927 }
d716a2a0
VP		 1928 break;
1929 }
1930
cfdda9d7
SW		 1931 connect_reply_upcall(ep, status2errno(status));
1932 state_set(&ep->com, DEAD);
1933
1934 if (status && act_open_has_tid(status))
1935 cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, GET_TID(rpl));
1936
793dad94 1937 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, atid);
cfdda9d7
SW		 1938 cxgb4_free_atid(t, atid);
1939 dst_release(ep->dst);
1940 cxgb4_l2t_release(ep->l2t);
1941 c4iw_put_ep(&ep->com);
1942
1943 return 0;
1944}
1945
1946static int pass_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
1947{
1948 struct cpl_pass_open_rpl *rpl = cplhdr(skb);
1949 struct tid_info *t = dev->rdev.lldi.tids;
1950 unsigned int stid = GET_TID(rpl);
1951 struct c4iw_listen_ep *ep = lookup_stid(t, stid);
1952
1953 if (!ep) {
1cab775c
VP		 1954 PDBG("%s stid %d lookup failure!\n", __func__, stid);
1955 goto out;
cfdda9d7
SW		 1956 }
1957 PDBG("%s ep %p status %d error %d\n", __func__, ep,
1958 rpl->status, status2errno(rpl->status));
d9594d99 1959 c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status));
cfdda9d7 1960
1cab775c 1961out:
cfdda9d7
SW		 1962 return 0;
1963}
1964
cfdda9d7
SW		 1965static int close_listsrv_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
1966{
1967 struct cpl_close_listsvr_rpl *rpl = cplhdr(skb);
1968 struct tid_info *t = dev->rdev.lldi.tids;
1969 unsigned int stid = GET_TID(rpl);
1970 struct c4iw_listen_ep *ep = lookup_stid(t, stid);
1971
1972 PDBG("%s ep %p\n", __func__, ep);
d9594d99 1973 c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status));
cfdda9d7
SW		 1974 return 0;
1975}
1976
830662f6 1977static void accept_cr(struct c4iw_ep *ep, struct sk_buff *skb,
cfdda9d7
SW		 1978 struct cpl_pass_accept_req *req)
1979{
1980 struct cpl_pass_accept_rpl *rpl;
1981 unsigned int mtu_idx;
1982 u64 opt0;
1983 u32 opt2;
1984 int wscale;
1985
1986 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
1987 BUG_ON(skb_cloned(skb));
1988 skb_trim(skb, sizeof(*rpl));
1989 skb_get(skb);
1990 cxgb4_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx);
1991 wscale = compute_wscale(rcv_win);
5be78ee9
VP		 1992 opt0 = (nocong ? NO_CONG(1) : 0) |
1993 KEEP_ALIVE(1) |
ba6d3925 1994 DELACK(1) |
cfdda9d7
SW		 1995 WND_SCALE(wscale) |
1996 MSS_IDX(mtu_idx) |
1997 L2T_IDX(ep->l2t->idx) |
1998 TX_CHAN(ep->tx_chan) |
1999 SMAC_SEL(ep->smac_idx) |
5be78ee9 2000 DSCP(ep->tos >> 2) |
b48f3b9c 2001 ULP_MODE(ULP_MODE_TCPDDP) |
cfdda9d7
SW		 2002 RCV_BUFSIZ(rcv_win>>10);
2003 opt2 = RX_CHANNEL(0) |
2004 RSS_QUEUE_VALID | RSS_QUEUE(ep->rss_qid);
2005
2006 if (enable_tcp_timestamps && req->tcpopt.tstamp)
2007 opt2 |= TSTAMPS_EN(1);
2008 if (enable_tcp_sack && req->tcpopt.sack)
2009 opt2 |= SACK_EN(1);
2010 if (wscale && enable_tcp_window_scaling)
2011 opt2 |= WND_SCALE_EN(1);
5be78ee9
VP		 2012 if (enable_ecn) {
2013 const struct tcphdr *tcph;
2014 u32 hlen = ntohl(req->hdr_len);
2015
2016 tcph = (const void *)(req + 1) + G_ETH_HDR_LEN(hlen) +
2017 G_IP_HDR_LEN(hlen);
2018 if (tcph->ece && tcph->cwr)
2019 opt2 |= CCTRL_ECN(1);
2020 }
cfdda9d7
SW		 2021
2022 rpl = cplhdr(skb);
2023 INIT_TP_WR(rpl, ep->hwtid);
2024 OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL,
2025 ep->hwtid));
2026 rpl->opt0 = cpu_to_be64(opt0);
2027 rpl->opt2 = cpu_to_be32(opt2);
d4f1a5c6 2028 set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx);
b38a0ad8 2029 t4_set_arp_err_handler(skb, NULL, arp_failure_discard);
cfdda9d7
SW		 2030 c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
2031
2032 return;
2033}
2034
830662f6 2035static void reject_cr(struct c4iw_dev *dev, u32 hwtid, struct sk_buff *skb)
cfdda9d7 2036{
830662f6 2037 PDBG("%s c4iw_dev %p tid %u\n", __func__, dev, hwtid);
cfdda9d7
SW		 2038 BUG_ON(skb_cloned(skb));
2039 skb_trim(skb, sizeof(struct cpl_tid_release));
2040 skb_get(skb);
2041 release_tid(&dev->rdev, hwtid, skb);
2042 return;
2043}
2044
830662f6
VP		 2045static void get_4tuple(struct cpl_pass_accept_req *req, int *iptype,
2046 __u8 *local_ip, __u8 *peer_ip,
cfdda9d7
SW		 2047 __be16 *local_port, __be16 *peer_port)
2048{
2049 int eth_len = G_ETH_HDR_LEN(be32_to_cpu(req->hdr_len));
2050 int ip_len = G_IP_HDR_LEN(be32_to_cpu(req->hdr_len));
2051 struct iphdr *ip = (struct iphdr *)((u8 *)(req + 1) + eth_len);
830662f6 2052 struct ipv6hdr *ip6 = (struct ipv6hdr *)((u8 *)(req + 1) + eth_len);
cfdda9d7
SW		 2053 struct tcphdr *tcp = (struct tcphdr *)
2054 ((u8 *)(req + 1) + eth_len + ip_len);
2055
830662f6
VP		 2056 if (ip->version == 4) {
2057 PDBG("%s saddr 0x%x daddr 0x%x sport %u dport %u\n", __func__,
2058 ntohl(ip->saddr), ntohl(ip->daddr), ntohs(tcp->source),
2059 ntohs(tcp->dest));
2060 *iptype = 4;
2061 memcpy(peer_ip, &ip->saddr, 4);
2062 memcpy(local_ip, &ip->daddr, 4);
2063 } else {
2064 PDBG("%s saddr %pI6 daddr %pI6 sport %u dport %u\n", __func__,
2065 ip6->saddr.s6_addr, ip6->daddr.s6_addr, ntohs(tcp->source),
2066 ntohs(tcp->dest));
2067 *iptype = 6;
2068 memcpy(peer_ip, ip6->saddr.s6_addr, 16);
2069 memcpy(local_ip, ip6->daddr.s6_addr, 16);
2070 }
cfdda9d7
SW		 2071 *peer_port = tcp->source;
2072 *local_port = tcp->dest;
2073
2074 return;
2075}
2076
2077static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
2078{
793dad94 2079 struct c4iw_ep *child_ep = NULL, *parent_ep;
cfdda9d7
SW		 2080 struct cpl_pass_accept_req *req = cplhdr(skb);
2081 unsigned int stid = GET_POPEN_TID(ntohl(req->tos_stid));
2082 struct tid_info *t = dev->rdev.lldi.tids;
2083 unsigned int hwtid = GET_TID(req);
2084 struct dst_entry *dst;
830662f6 2085 __u8 local_ip[16], peer_ip[16];
cfdda9d7 2086 __be16 local_port, peer_port;
3786cf18 2087 int err;
1cab775c 2088 u16 peer_mss = ntohs(req->tcpopt.mss);
830662f6 2089 int iptype;
cfdda9d7
SW		 2090
2091 parent_ep = lookup_stid(t, stid);
1cab775c
VP		 2092 if (!parent_ep) {
2093 PDBG("%s connect request on invalid stid %d\n", __func__, stid);
2094 goto reject;
2095 }
1cab775c 2096
cfdda9d7
SW		 2097 if (state_read(&parent_ep->com) != LISTEN) {
2098 printk(KERN_ERR "%s - listening ep not in LISTEN\n",
2099 __func__);
2100 goto reject;
2101 }
2102
830662f6
VP		 2103 get_4tuple(req, &iptype, local_ip, peer_ip, &local_port, &peer_port);
2104
cfdda9d7 2105 /* Find output route */
830662f6
VP		 2106 if (iptype == 4) {
2107 PDBG("%s parent ep %p hwtid %u laddr %pI4 raddr %pI4 lport %d rport %d peer_mss %d\n"
2108 , __func__, parent_ep, hwtid,
2109 local_ip, peer_ip, ntohs(local_port),
2110 ntohs(peer_port), peer_mss);
2111 dst = find_route(dev, *(__be32 *)local_ip, *(__be32 *)peer_ip,
2112 local_port, peer_port,
2113 GET_POPEN_TOS(ntohl(req->tos_stid)));
2114 } else {
2115 PDBG("%s parent ep %p hwtid %u laddr %pI6 raddr %pI6 lport %d rport %d peer_mss %d\n"
2116 , __func__, parent_ep, hwtid,
2117 local_ip, peer_ip, ntohs(local_port),
2118 ntohs(peer_port), peer_mss);
2119 dst = find_route6(dev, local_ip, peer_ip, local_port, peer_port,
2120 PASS_OPEN_TOS(ntohl(req->tos_stid)),
2121 ((struct sockaddr_in6 *)
2122 &parent_ep->com.local_addr)->sin6_scope_id);
2123 }
2124 if (!dst) {
cfdda9d7
SW		 2125 printk(KERN_ERR MOD "%s - failed to find dst entry!\n",
2126 __func__);
2127 goto reject;
2128 }
3786cf18
DM		 2129
2130 child_ep = alloc_ep(sizeof(*child_ep), GFP_KERNEL);
2131 if (!child_ep) {
2132 printk(KERN_ERR MOD "%s - failed to allocate ep entry!\n",
cfdda9d7
SW		 2133 __func__);
2134 dst_release(dst);
2135 goto reject;
2136 }
2137
830662f6 2138 err = import_ep(child_ep, iptype, peer_ip, dst, dev, false);
3786cf18
DM		 2139 if (err) {
2140 printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n",
cfdda9d7 2141 __func__);
cfdda9d7 2142 dst_release(dst);
3786cf18 2143 kfree(child_ep);
cfdda9d7
SW		 2144 goto reject;
2145 }
3786cf18 2146
1cab775c
VP		 2147 if (peer_mss && child_ep->mtu > (peer_mss + 40))
2148 child_ep->mtu = peer_mss + 40;
2149
cfdda9d7
SW		 2150 state_set(&child_ep->com, CONNECTING);
2151 child_ep->com.dev = dev;
2152 child_ep->com.cm_id = NULL;
830662f6
VP		 2153 if (iptype == 4) {
2154 struct sockaddr_in *sin = (struct sockaddr_in *)
2155 &child_ep->com.local_addr;
2156 sin->sin_family = PF_INET;
2157 sin->sin_port = local_port;
2158 sin->sin_addr.s_addr = *(__be32 *)local_ip;
2159 sin = (struct sockaddr_in *)&child_ep->com.remote_addr;
2160 sin->sin_family = PF_INET;
2161 sin->sin_port = peer_port;
2162 sin->sin_addr.s_addr = *(__be32 *)peer_ip;
2163 } else {
2164 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)
2165 &child_ep->com.local_addr;
2166 sin6->sin6_family = PF_INET6;
2167 sin6->sin6_port = local_port;
2168 memcpy(sin6->sin6_addr.s6_addr, local_ip, 16);
2169 sin6 = (struct sockaddr_in6 *)&child_ep->com.remote_addr;
2170 sin6->sin6_family = PF_INET6;
2171 sin6->sin6_port = peer_port;
2172 memcpy(sin6->sin6_addr.s6_addr, peer_ip, 16);
2173 }
cfdda9d7
SW		 2174 c4iw_get_ep(&parent_ep->com);
2175 child_ep->parent_ep = parent_ep;
2176 child_ep->tos = GET_POPEN_TOS(ntohl(req->tos_stid));
cfdda9d7
SW		 2177 child_ep->dst = dst;
2178 child_ep->hwtid = hwtid;
cfdda9d7
SW		 2179
2180 PDBG("%s tx_chan %u smac_idx %u rss_qid %u\n", __func__,
3786cf18 2181 child_ep->tx_chan, child_ep->smac_idx, child_ep->rss_qid);
cfdda9d7
SW		 2182
2183 init_timer(&child_ep->timer);
2184 cxgb4_insert_tid(t, child_ep, hwtid);
b3de6cfe 2185 insert_handle(dev, &dev->hwtid_idr, child_ep, child_ep->hwtid);
830662f6 2186 accept_cr(child_ep, skb, req);
793dad94 2187 set_bit(PASS_ACCEPT_REQ, &child_ep->com.history);
cfdda9d7
SW		 2188 goto out;
2189reject:
830662f6 2190 reject_cr(dev, hwtid, skb);
cfdda9d7
SW		 2191out:
2192 return 0;
2193}
2194
2195static int pass_establish(struct c4iw_dev *dev, struct sk_buff *skb)
2196{
2197 struct c4iw_ep *ep;
2198 struct cpl_pass_establish *req = cplhdr(skb);
2199 struct tid_info *t = dev->rdev.lldi.tids;
2200 unsigned int tid = GET_TID(req);
2201
2202 ep = lookup_tid(t, tid);
2203 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
2204 ep->snd_seq = be32_to_cpu(req->snd_isn);
2205 ep->rcv_seq = be32_to_cpu(req->rcv_isn);
2206
1cab775c
VP		 2207 PDBG("%s ep %p hwtid %u tcp_opt 0x%02x\n", __func__, ep, tid,
2208 ntohs(req->tcp_opt));
2209
cfdda9d7
SW		 2210 set_emss(ep, ntohs(req->tcp_opt));
2211
2212 dst_confirm(ep->dst);
2213 state_set(&ep->com, MPA_REQ_WAIT);
2214 start_ep_timer(ep);
2215 send_flowc(ep, skb);
793dad94 2216 set_bit(PASS_ESTAB, &ep->com.history);
cfdda9d7
SW		 2217
2218 return 0;
2219}
2220
2221static int peer_close(struct c4iw_dev *dev, struct sk_buff *skb)
2222{
2223 struct cpl_peer_close *hdr = cplhdr(skb);
2224 struct c4iw_ep *ep;
2225 struct c4iw_qp_attributes attrs;
cfdda9d7
SW		 2226 int disconnect = 1;
2227 int release = 0;
cfdda9d7
SW		 2228 struct tid_info *t = dev->rdev.lldi.tids;
2229 unsigned int tid = GET_TID(hdr);
8da7e7a5 2230 int ret;
cfdda9d7
SW		 2231
2232 ep = lookup_tid(t, tid);
2233 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
2234 dst_confirm(ep->dst);
2235
793dad94 2236 set_bit(PEER_CLOSE, &ep->com.history);
2f5b48c3 2237 mutex_lock(&ep->com.mutex);
cfdda9d7
SW		 2238 switch (ep->com.state) {
2239 case MPA_REQ_WAIT:
2240 __state_set(&ep->com, CLOSING);
2241 break;
2242 case MPA_REQ_SENT:
2243 __state_set(&ep->com, CLOSING);
2244 connect_reply_upcall(ep, -ECONNRESET);
2245 break;
2246 case MPA_REQ_RCVD:
2247
2248 /*
2249 * We're gonna mark this puppy DEAD, but keep
2250 * the reference on it until the ULP accepts or
2251 * rejects the CR. Also wake up anyone waiting
2252 * in rdma connection migration (see c4iw_accept_cr()).
2253 */
2254 __state_set(&ep->com, CLOSING);
cfdda9d7 2255 PDBG("waking up ep %p tid %u\n", ep, ep->hwtid);
d9594d99 2256 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
cfdda9d7
SW		 2257 break;
2258 case MPA_REP_SENT:
2259 __state_set(&ep->com, CLOSING);
cfdda9d7 2260 PDBG("waking up ep %p tid %u\n", ep, ep->hwtid);
d9594d99 2261 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
cfdda9d7
SW		 2262 break;
2263 case FPDU_MODE:
ca5a2202 2264 start_ep_timer(ep);
cfdda9d7 2265 __state_set(&ep->com, CLOSING);
30c95c2d 2266 attrs.next_state = C4IW_QP_STATE_CLOSING;
8da7e7a5 2267 ret = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
30c95c2d 2268 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
8da7e7a5
SW		 2269 if (ret != -ECONNRESET) {
2270 peer_close_upcall(ep);
2271 disconnect = 1;
2272 }
cfdda9d7
SW		 2273 break;
2274 case ABORTING:
2275 disconnect = 0;
2276 break;
2277 case CLOSING:
2278 __state_set(&ep->com, MORIBUND);
2279 disconnect = 0;
2280 break;
2281 case MORIBUND:
ca5a2202 2282 stop_ep_timer(ep);
cfdda9d7
SW		 2283 if (ep->com.cm_id && ep->com.qp) {
2284 attrs.next_state = C4IW_QP_STATE_IDLE;
2285 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
2286 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
2287 }
2288 close_complete_upcall(ep);
2289 __state_set(&ep->com, DEAD);
2290 release = 1;
2291 disconnect = 0;
2292 break;
2293 case DEAD:
2294 disconnect = 0;
2295 break;
2296 default:
2297 BUG_ON(1);
2298 }
2f5b48c3 2299 mutex_unlock(&ep->com.mutex);
cfdda9d7
SW		 2300 if (disconnect)
2301 c4iw_ep_disconnect(ep, 0, GFP_KERNEL);
2302 if (release)
2303 release_ep_resources(ep);
2304 return 0;
2305}
2306
2307/*
2308 * Returns whether an ABORT_REQ_RSS message is a negative advice.
2309 */
2310static int is_neg_adv_abort(unsigned int status)
2311{
2312 return status == CPL_ERR_RTX_NEG_ADVICE ||
2313 status == CPL_ERR_PERSIST_NEG_ADVICE;
2314}
2315
2316static int peer_abort(struct c4iw_dev *dev, struct sk_buff *skb)
2317{
2318 struct cpl_abort_req_rss *req = cplhdr(skb);
2319 struct c4iw_ep *ep;
2320 struct cpl_abort_rpl *rpl;
2321 struct sk_buff *rpl_skb;
2322 struct c4iw_qp_attributes attrs;
2323 int ret;
2324 int release = 0;
cfdda9d7
SW		 2325 struct tid_info *t = dev->rdev.lldi.tids;
2326 unsigned int tid = GET_TID(req);
cfdda9d7
SW		 2327
2328 ep = lookup_tid(t, tid);
2329 if (is_neg_adv_abort(req->status)) {
2330 PDBG("%s neg_adv_abort ep %p tid %u\n", __func__, ep,
2331 ep->hwtid);
2332 return 0;
2333 }
cfdda9d7
SW		 2334 PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid,
2335 ep->com.state);
793dad94 2336 set_bit(PEER_ABORT, &ep->com.history);
2f5b48c3
SW		 2337
2338 /*
2339 * Wake up any threads in rdma_init() or rdma_fini().
d2fe99e8
KS		 2340 * However, this is not needed if com state is just
2341 * MPA_REQ_SENT
2f5b48c3 2342 */
d2fe99e8
KS		 2343 if (ep->com.state != MPA_REQ_SENT)
2344 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
2f5b48c3
SW		 2345
2346 mutex_lock(&ep->com.mutex);
cfdda9d7
SW		 2347 switch (ep->com.state) {
2348 case CONNECTING:
2349 break;
2350 case MPA_REQ_WAIT:
ca5a2202 2351 stop_ep_timer(ep);
cfdda9d7
SW		 2352 break;
2353 case MPA_REQ_SENT:
ca5a2202 2354 stop_ep_timer(ep);
fe7e0a4d 2355 if (mpa_rev == 1 || (mpa_rev == 2 && ep->tried_with_mpa_v1))
d2fe99e8
KS		 2356 connect_reply_upcall(ep, -ECONNRESET);
2357 else {
2358 /*
2359 * we just don't send notification upwards because we
2360 * want to retry with mpa_v1 without upper layers even
2361 * knowing it.
2362 *
2363 * do some housekeeping so as to re-initiate the
2364 * connection
2365 */
2366 PDBG("%s: mpa_rev=%d. Retrying with mpav1\n", __func__,
2367 mpa_rev);
2368 ep->retry_with_mpa_v1 = 1;
2369 }
cfdda9d7
SW		 2370 break;
2371 case MPA_REP_SENT:
cfdda9d7
SW		 2372 break;
2373 case MPA_REQ_RCVD:
cfdda9d7
SW		 2374 break;
2375 case MORIBUND:
2376 case CLOSING:
ca5a2202 2377 stop_ep_timer(ep);
cfdda9d7
SW		 2378 /*FALLTHROUGH*/
2379 case FPDU_MODE:
2380 if (ep->com.cm_id && ep->com.qp) {
2381 attrs.next_state = C4IW_QP_STATE_ERROR;
2382 ret = c4iw_modify_qp(ep->com.qp->rhp,
2383 ep->com.qp, C4IW_QP_ATTR_NEXT_STATE,
2384 &attrs, 1);
2385 if (ret)
2386 printk(KERN_ERR MOD
2387 "%s - qp <- error failed!\n",
2388 __func__);
2389 }
2390 peer_abort_upcall(ep);
2391 break;
2392 case ABORTING:
2393 break;
2394 case DEAD:
2395 PDBG("%s PEER_ABORT IN DEAD STATE!!!!\n", __func__);
2f5b48c3 2396 mutex_unlock(&ep->com.mutex);
cfdda9d7
SW		 2397 return 0;
2398 default:
2399 BUG_ON(1);
2400 break;
2401 }
2402 dst_confirm(ep->dst);
2403 if (ep->com.state != ABORTING) {
2404 __state_set(&ep->com, DEAD);
d2fe99e8
KS		 2405 /* we don't release if we want to retry with mpa_v1 */
2406 if (!ep->retry_with_mpa_v1)
2407 release = 1;
cfdda9d7 2408 }
2f5b48c3 2409 mutex_unlock(&ep->com.mutex);
cfdda9d7
SW		 2410
2411 rpl_skb = get_skb(skb, sizeof(*rpl), GFP_KERNEL);
2412 if (!rpl_skb) {
2413 printk(KERN_ERR MOD "%s - cannot allocate skb!\n",
2414 __func__);
2415 release = 1;
2416 goto out;
2417 }
2418 set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
2419 rpl = (struct cpl_abort_rpl *) skb_put(rpl_skb, sizeof(*rpl));
2420 INIT_TP_WR(rpl, ep->hwtid);
2421 OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_RPL, ep->hwtid));
2422 rpl->cmd = CPL_ABORT_NO_RST;
2423 c4iw_ofld_send(&ep->com.dev->rdev, rpl_skb);
2424out:
cfdda9d7
SW		 2425 if (release)
2426 release_ep_resources(ep);
fe7e0a4d
VP		 2427 else if (ep->retry_with_mpa_v1) {
2428 remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid);
d2fe99e8
KS		 2429 cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid);
2430 dst_release(ep->dst);
2431 cxgb4_l2t_release(ep->l2t);
2432 c4iw_reconnect(ep);
2433 }
2434
cfdda9d7
SW		 2435 return 0;
2436}
2437
2438static int close_con_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
2439{
2440 struct c4iw_ep *ep;
2441 struct c4iw_qp_attributes attrs;
2442 struct cpl_close_con_rpl *rpl = cplhdr(skb);
cfdda9d7
SW		 2443 int release = 0;
2444 struct tid_info *t = dev->rdev.lldi.tids;
2445 unsigned int tid = GET_TID(rpl);
cfdda9d7
SW		 2446
2447 ep = lookup_tid(t, tid);
2448
2449 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
2450 BUG_ON(!ep);
2451
2452 /* The cm_id may be null if we failed to connect */
2f5b48c3 2453 mutex_lock(&ep->com.mutex);
cfdda9d7
SW		 2454 switch (ep->com.state) {
2455 case CLOSING:
2456 __state_set(&ep->com, MORIBUND);
2457 break;
2458 case MORIBUND:
ca5a2202 2459 stop_ep_timer(ep);
cfdda9d7
SW		 2460 if ((ep->com.cm_id) && (ep->com.qp)) {
2461 attrs.next_state = C4IW_QP_STATE_IDLE;
2462 c4iw_modify_qp(ep->com.qp->rhp,
2463 ep->com.qp,
2464 C4IW_QP_ATTR_NEXT_STATE,
2465 &attrs, 1);
2466 }
2467 close_complete_upcall(ep);
2468 __state_set(&ep->com, DEAD);
2469 release = 1;
2470 break;
2471 case ABORTING:
2472 case DEAD:
2473 break;
2474 default:
2475 BUG_ON(1);
2476 break;
2477 }
2f5b48c3 2478 mutex_unlock(&ep->com.mutex);
cfdda9d7
SW		 2479 if (release)
2480 release_ep_resources(ep);
2481 return 0;
2482}
2483
2484static int terminate(struct c4iw_dev *dev, struct sk_buff *skb)
2485{
0e42c1f4 2486 struct cpl_rdma_terminate *rpl = cplhdr(skb);
cfdda9d7 2487 struct tid_info *t = dev->rdev.lldi.tids;
0e42c1f4
SW		 2488 unsigned int tid = GET_TID(rpl);
2489 struct c4iw_ep *ep;
2490 struct c4iw_qp_attributes attrs;
cfdda9d7
SW		 2491
2492 ep = lookup_tid(t, tid);
0e42c1f4 2493 BUG_ON(!ep);
cfdda9d7 2494
30c95c2d 2495 if (ep && ep->com.qp) {
0e42c1f4
SW		 2496 printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", tid,
2497 ep->com.qp->wq.sq.qid);
2498 attrs.next_state = C4IW_QP_STATE_TERMINATE;
2499 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
2500 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
2501 } else
30c95c2d 2502 printk(KERN_WARNING MOD "TERM received tid %u no ep/qp\n", tid);
cfdda9d7 2503
cfdda9d7
SW		 2504 return 0;
2505}
2506
2507/*
2508 * Upcall from the adapter indicating data has been transmitted.
2509 * For us its just the single MPA request or reply. We can now free
2510 * the skb holding the mpa message.
2511 */
2512static int fw4_ack(struct c4iw_dev *dev, struct sk_buff *skb)
2513{
2514 struct c4iw_ep *ep;
2515 struct cpl_fw4_ack *hdr = cplhdr(skb);
2516 u8 credits = hdr->credits;
2517 unsigned int tid = GET_TID(hdr);
2518 struct tid_info *t = dev->rdev.lldi.tids;
2519
2520
2521 ep = lookup_tid(t, tid);
2522 PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits);
2523 if (credits == 0) {
aa1ad260
JP		 2524 PDBG("%s 0 credit ack ep %p tid %u state %u\n",
2525 __func__, ep, ep->hwtid, state_read(&ep->com));
cfdda9d7
SW		 2526 return 0;
2527 }
2528
2529 dst_confirm(ep->dst);
2530 if (ep->mpa_skb) {
2531 PDBG("%s last streaming msg ack ep %p tid %u state %u "
2532 "initiator %u freeing skb\n", __func__, ep, ep->hwtid,
2533 state_read(&ep->com), ep->mpa_attr.initiator ? 1 : 0);
2534 kfree_skb(ep->mpa_skb);
2535 ep->mpa_skb = NULL;
2536 }
2537 return 0;
2538}
2539
cfdda9d7
SW		 2540int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
2541{
2542 int err;
2543 struct c4iw_ep *ep = to_ep(cm_id);
2544 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
2545
2546 if (state_read(&ep->com) == DEAD) {
2547 c4iw_put_ep(&ep->com);
2548 return -ECONNRESET;
2549 }
793dad94 2550 set_bit(ULP_REJECT, &ep->com.history);
cfdda9d7
SW		 2551 BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD);
2552 if (mpa_rev == 0)
2553 abort_connection(ep, NULL, GFP_KERNEL);
2554 else {
2555 err = send_mpa_reject(ep, pdata, pdata_len);
2556 err = c4iw_ep_disconnect(ep, 0, GFP_KERNEL);
2557 }
2558 c4iw_put_ep(&ep->com);
2559 return 0;
2560}
2561
2562int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
2563{
2564 int err;
2565 struct c4iw_qp_attributes attrs;
2566 enum c4iw_qp_attr_mask mask;
2567 struct c4iw_ep *ep = to_ep(cm_id);
2568 struct c4iw_dev *h = to_c4iw_dev(cm_id->device);
2569 struct c4iw_qp *qp = get_qhp(h, conn_param->qpn);
2570
2571 PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
2572 if (state_read(&ep->com) == DEAD) {
2573 err = -ECONNRESET;
2574 goto err;
2575 }
2576
2577 BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD);
2578 BUG_ON(!qp);
2579
793dad94 2580 set_bit(ULP_ACCEPT, &ep->com.history);
be4c9bad
RD		 2581 if ((conn_param->ord > c4iw_max_read_depth) ||
2582 (conn_param->ird > c4iw_max_read_depth)) {
cfdda9d7
SW		 2583 abort_connection(ep, NULL, GFP_KERNEL);
2584 err = -EINVAL;
2585 goto err;
2586 }
2587
d2fe99e8
KS		 2588 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
2589 if (conn_param->ord > ep->ird) {
2590 ep->ird = conn_param->ird;
2591 ep->ord = conn_param->ord;
2592 send_mpa_reject(ep, conn_param->private_data,
2593 conn_param->private_data_len);
2594 abort_connection(ep, NULL, GFP_KERNEL);
2595 err = -ENOMEM;
2596 goto err;
2597 }
2598 if (conn_param->ird > ep->ord) {
2599 if (!ep->ord)
2600 conn_param->ird = 1;
2601 else {
2602 abort_connection(ep, NULL, GFP_KERNEL);
2603 err = -ENOMEM;
2604 goto err;
2605 }
2606 }
cfdda9d7 2607
d2fe99e8 2608 }
cfdda9d7
SW		 2609 ep->ird = conn_param->ird;
2610 ep->ord = conn_param->ord;
2611
d2fe99e8
KS		 2612 if (ep->mpa_attr.version != 2)
2613 if (peer2peer && ep->ird == 0)
2614 ep->ird = 1;
cfdda9d7
SW		 2615
2616 PDBG("%s %d ird %d ord %d\n", __func__, __LINE__, ep->ird, ep->ord);
2617
d2fe99e8
KS		 2618 cm_id->add_ref(cm_id);
2619 ep->com.cm_id = cm_id;
2620 ep->com.qp = qp;
325abead 2621 ref_qp(ep);
d2fe99e8 2622
cfdda9d7
SW		 2623 /* bind QP to EP and move to RTS */
2624 attrs.mpa_attr = ep->mpa_attr;
2625 attrs.max_ird = ep->ird;
2626 attrs.max_ord = ep->ord;
2627 attrs.llp_stream_handle = ep;
2628 attrs.next_state = C4IW_QP_STATE_RTS;
2629
2630 /* bind QP and TID with INIT_WR */
2631 mask = C4IW_QP_ATTR_NEXT_STATE |
2632 C4IW_QP_ATTR_LLP_STREAM_HANDLE |
2633 C4IW_QP_ATTR_MPA_ATTR |
2634 C4IW_QP_ATTR_MAX_IRD |
2635 C4IW_QP_ATTR_MAX_ORD;
2636
2637 err = c4iw_modify_qp(ep->com.qp->rhp,
2638 ep->com.qp, mask, &attrs, 1);
2639 if (err)
2640 goto err1;
2641 err = send_mpa_reply(ep, conn_param->private_data,
2642 conn_param->private_data_len);
2643 if (err)
2644 goto err1;
2645
2646 state_set(&ep->com, FPDU_MODE);
2647 established_upcall(ep);
2648 c4iw_put_ep(&ep->com);
2649 return 0;
2650err1:
2651 ep->com.cm_id = NULL;
cfdda9d7
SW		 2652 cm_id->rem_ref(cm_id);
2653err:
2654 c4iw_put_ep(&ep->com);
2655 return err;
2656}
2657
830662f6
VP		 2658static int pick_local_ipaddrs(struct c4iw_dev *dev, struct iw_cm_id *cm_id)
2659{
2660 struct in_device *ind;
2661 int found = 0;
2662 struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr;
2663 struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr;
2664
2665 ind = in_dev_get(dev->rdev.lldi.ports[0]);
2666 if (!ind)
2667 return -EADDRNOTAVAIL;
2668 for_primary_ifa(ind) {
2669 laddr->sin_addr.s_addr = ifa->ifa_address;
2670 raddr->sin_addr.s_addr = ifa->ifa_address;
2671 found = 1;
2672 break;
2673 }
2674 endfor_ifa(ind);
2675 in_dev_put(ind);
2676 return found ? 0 : -EADDRNOTAVAIL;
2677}
2678
2679static int get_lladdr(struct net_device *dev, struct in6_addr *addr,
2680 unsigned char banned_flags)
2681{
2682 struct inet6_dev *idev;
2683 int err = -EADDRNOTAVAIL;
2684
2685 rcu_read_lock();
2686 idev = __in6_dev_get(dev);
2687 if (idev != NULL) {
2688 struct inet6_ifaddr *ifp;
2689
2690 read_lock_bh(&idev->lock);
2691 list_for_each_entry(ifp, &idev->addr_list, if_list) {
2692 if (ifp->scope == IFA_LINK &&
2693 !(ifp->flags & banned_flags)) {
2694 memcpy(addr, &ifp->addr, 16);
2695 err = 0;
2696 break;
2697 }
2698 }
2699 read_unlock_bh(&idev->lock);
2700 }
2701 rcu_read_unlock();
2702 return err;
2703}
2704
2705static int pick_local_ip6addrs(struct c4iw_dev *dev, struct iw_cm_id *cm_id)
2706{
2707 struct in6_addr uninitialized_var(addr);
2708 struct sockaddr_in6 *la6 = (struct sockaddr_in6 *)&cm_id->local_addr;
2709 struct sockaddr_in6 *ra6 = (struct sockaddr_in6 *)&cm_id->remote_addr;
2710
2711 if (get_lladdr(dev->rdev.lldi.ports[0], &addr, IFA_F_TENTATIVE)) {
2712 memcpy(la6->sin6_addr.s6_addr, &addr, 16);
2713 memcpy(ra6->sin6_addr.s6_addr, &addr, 16);
2714 return 0;
2715 }
2716 return -EADDRNOTAVAIL;
2717}
2718
cfdda9d7
SW		 2719int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
2720{
cfdda9d7
SW		 2721 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device);
2722 struct c4iw_ep *ep;
3786cf18 2723 int err = 0;
24d44a39
SW		 2724 struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr;
2725 struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr;
830662f6
VP		 2726 struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *)&cm_id->local_addr;
2727 struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)
2728 &cm_id->remote_addr;
2729 __u8 *ra;
2730 int iptype;
cfdda9d7 2731
be4c9bad
RD		 2732 if ((conn_param->ord > c4iw_max_read_depth) ||
2733 (conn_param->ird > c4iw_max_read_depth)) {
2734 err = -EINVAL;
2735 goto out;
2736 }
cfdda9d7
SW		 2737 ep = alloc_ep(sizeof(*ep), GFP_KERNEL);
2738 if (!ep) {
2739 printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__);
2740 err = -ENOMEM;
2741 goto out;
2742 }
2743 init_timer(&ep->timer);
2744 ep->plen = conn_param->private_data_len;
2745 if (ep->plen)
2746 memcpy(ep->mpa_pkt + sizeof(struct mpa_message),
2747 conn_param->private_data, ep->plen);
2748 ep->ird = conn_param->ird;
2749 ep->ord = conn_param->ord;
2750
2751 if (peer2peer && ep->ord == 0)
2752 ep->ord = 1;
2753
2754 cm_id->add_ref(cm_id);
2755 ep->com.dev = dev;
2756 ep->com.cm_id = cm_id;
2757 ep->com.qp = get_qhp(dev, conn_param->qpn);
830662f6
VP		 2758 if (!ep->com.qp) {
2759 PDBG("%s qpn 0x%x not found!\n", __func__, conn_param->qpn);
2760 err = -EINVAL;
2761 goto fail2;
2762 }
325abead 2763 ref_qp(ep);
cfdda9d7
SW		 2764 PDBG("%s qpn 0x%x qp %p cm_id %p\n", __func__, conn_param->qpn,
2765 ep->com.qp, cm_id);
2766
2767 /*
2768 * Allocate an active TID to initiate a TCP connection.
2769 */
2770 ep->atid = cxgb4_alloc_atid(dev->rdev.lldi.tids, ep);
2771 if (ep->atid == -1) {
2772 printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __func__);
2773 err = -ENOMEM;
2774 goto fail2;
2775 }
793dad94 2776 insert_handle(dev, &dev->atid_idr, ep, ep->atid);
cfdda9d7 2777
830662f6
VP		 2778 if (cm_id->remote_addr.ss_family == AF_INET) {
2779 iptype = 4;
2780 ra = (__u8 *)&raddr->sin_addr;
cfdda9d7 2781
830662f6
VP		 2782 /*
2783 * Handle loopback requests to INADDR_ANY.
2784 */
2785 if ((__force int)raddr->sin_addr.s_addr == INADDR_ANY) {
2786 err = pick_local_ipaddrs(dev, cm_id);
2787 if (err)
2788 goto fail2;
2789 }
2790
2791 /* find a route */
2792 PDBG("%s saddr %pI4 sport 0x%x raddr %pI4 rport 0x%x\n",
2793 __func__, &laddr->sin_addr, ntohs(laddr->sin_port),
2794 ra, ntohs(raddr->sin_port));
2795 ep->dst = find_route(dev, laddr->sin_addr.s_addr,
2796 raddr->sin_addr.s_addr, laddr->sin_port,
2797 raddr->sin_port, 0);
2798 } else {
2799 iptype = 6;
2800 ra = (__u8 *)&raddr6->sin6_addr;
2801
2802 /*
2803 * Handle loopback requests to INADDR_ANY.
2804 */
2805 if (ipv6_addr_type(&raddr6->sin6_addr) == IPV6_ADDR_ANY) {
2806 err = pick_local_ip6addrs(dev, cm_id);
2807 if (err)
2808 goto fail2;
2809 }
2810
2811 /* find a route */
2812 PDBG("%s saddr %pI6 sport 0x%x raddr %pI6 rport 0x%x\n",
2813 __func__, laddr6->sin6_addr.s6_addr,
2814 ntohs(laddr6->sin6_port),
2815 raddr6->sin6_addr.s6_addr, ntohs(raddr6->sin6_port));
2816 ep->dst = find_route6(dev, laddr6->sin6_addr.s6_addr,
2817 raddr6->sin6_addr.s6_addr,
2818 laddr6->sin6_port, raddr6->sin6_port, 0,
2819 raddr6->sin6_scope_id);
2820 }
2821 if (!ep->dst) {
cfdda9d7
SW		 2822 printk(KERN_ERR MOD "%s - cannot find route.\n", __func__);
2823 err = -EHOSTUNREACH;
2824 goto fail3;
2825 }
cfdda9d7 2826
830662f6 2827 err = import_ep(ep, iptype, ra, ep->dst, ep->com.dev, true);
3786cf18 2828 if (err) {
cfdda9d7 2829 printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__);
cfdda9d7
SW		 2830 goto fail4;
2831 }
2832
2833 PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n",
2834 __func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid,
2835 ep->l2t->idx);
2836
2837 state_set(&ep->com, CONNECTING);
2838 ep->tos = 0;
24d44a39
SW		 2839 memcpy(&ep->com.local_addr, &cm_id->local_addr,
2840 sizeof(ep->com.local_addr));
2841 memcpy(&ep->com.remote_addr, &cm_id->remote_addr,
2842 sizeof(ep->com.remote_addr));
cfdda9d7
SW		 2843
2844 /* send connect request to rnic */
2845 err = send_connect(ep);
2846 if (!err)
2847 goto out;
2848
2849 cxgb4_l2t_release(ep->l2t);
2850fail4:
2851 dst_release(ep->dst);
2852fail3:
793dad94 2853 remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid);
cfdda9d7
SW		 2854 cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid);
2855fail2:
2856 cm_id->rem_ref(cm_id);
2857 c4iw_put_ep(&ep->com);
2858out:
2859 return err;
2860}
2861
830662f6
VP		 2862static int create_server6(struct c4iw_dev *dev, struct c4iw_listen_ep *ep)
2863{
2864 int err;
2865 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&ep->com.local_addr;
2866
2867 c4iw_init_wr_wait(&ep->com.wr_wait);
2868 err = cxgb4_create_server6(ep->com.dev->rdev.lldi.ports[0],
2869 ep->stid, &sin6->sin6_addr,
2870 sin6->sin6_port,
2871 ep->com.dev->rdev.lldi.rxq_ids[0]);
2872 if (!err)
2873 err = c4iw_wait_for_reply(&ep->com.dev->rdev,
2874 &ep->com.wr_wait,
2875 0, 0, __func__);
2876 if (err)
2877 pr_err("cxgb4_create_server6/filter failed err %d stid %d laddr %pI6 lport %d\n",
2878 err, ep->stid,
2879 sin6->sin6_addr.s6_addr, ntohs(sin6->sin6_port));
2880 return err;
2881}
2882
2883static int create_server4(struct c4iw_dev *dev, struct c4iw_listen_ep *ep)
2884{
2885 int err;
2886 struct sockaddr_in *sin = (struct sockaddr_in *)&ep->com.local_addr;
2887
2888 if (dev->rdev.lldi.enable_fw_ofld_conn) {
2889 do {
2890 err = cxgb4_create_server_filter(
2891 ep->com.dev->rdev.lldi.ports[0], ep->stid,
2892 sin->sin_addr.s_addr, sin->sin_port, 0,
2893 ep->com.dev->rdev.lldi.rxq_ids[0], 0, 0);
2894 if (err == -EBUSY) {
2895 set_current_state(TASK_UNINTERRUPTIBLE);
2896 schedule_timeout(usecs_to_jiffies(100));
2897 }
2898 } while (err == -EBUSY);
2899 } else {
2900 c4iw_init_wr_wait(&ep->com.wr_wait);
2901 err = cxgb4_create_server(ep->com.dev->rdev.lldi.ports[0],
2902 ep->stid, sin->sin_addr.s_addr, sin->sin_port,
2903 0, ep->com.dev->rdev.lldi.rxq_ids[0]);
2904 if (!err)
2905 err = c4iw_wait_for_reply(&ep->com.dev->rdev,
2906 &ep->com.wr_wait,
2907 0, 0, __func__);
2908 }
2909 if (err)
2910 pr_err("cxgb4_create_server/filter failed err %d stid %d laddr %pI4 lport %d\n"
2911 , err, ep->stid,
2912 &sin->sin_addr, ntohs(sin->sin_port));
2913 return err;
2914}
2915
cfdda9d7
SW		 2916int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog)
2917{
2918 int err = 0;
2919 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device);
2920 struct c4iw_listen_ep *ep;
2921
cfdda9d7
SW		 2922 might_sleep();
2923
2924 ep = alloc_ep(sizeof(*ep), GFP_KERNEL);
2925 if (!ep) {
2926 printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__);
2927 err = -ENOMEM;
2928 goto fail1;
2929 }
2930 PDBG("%s ep %p\n", __func__, ep);
2931 cm_id->add_ref(cm_id);
2932 ep->com.cm_id = cm_id;
2933 ep->com.dev = dev;
2934 ep->backlog = backlog;
24d44a39
SW		 2935 memcpy(&ep->com.local_addr, &cm_id->local_addr,
2936 sizeof(ep->com.local_addr));
cfdda9d7
SW		 2937
2938 /*
2939 * Allocate a server TID.
2940 */
8c044690
KS		 2941 if (dev->rdev.lldi.enable_fw_ofld_conn &&
2942 ep->com.local_addr.ss_family == AF_INET)
830662f6
VP		 2943 ep->stid = cxgb4_alloc_sftid(dev->rdev.lldi.tids,
2944 cm_id->local_addr.ss_family, ep);
1cab775c 2945 else
830662f6
VP		 2946 ep->stid = cxgb4_alloc_stid(dev->rdev.lldi.tids,
2947 cm_id->local_addr.ss_family, ep);
1cab775c 2948
cfdda9d7 2949 if (ep->stid == -1) {
be4c9bad 2950 printk(KERN_ERR MOD "%s - cannot alloc stid.\n", __func__);
cfdda9d7
SW		 2951 err = -ENOMEM;
2952 goto fail2;
2953 }
793dad94 2954 insert_handle(dev, &dev->stid_idr, ep, ep->stid);
cfdda9d7 2955 state_set(&ep->com, LISTEN);
830662f6
VP		 2956 if (ep->com.local_addr.ss_family == AF_INET)
2957 err = create_server4(dev, ep);
2958 else
2959 err = create_server6(dev, ep);
cfdda9d7
SW		 2960 if (!err) {
2961 cm_id->provider_data = ep;
2962 goto out;
2963 }
830662f6
VP		 2964 cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid,
2965 ep->com.local_addr.ss_family);
cfdda9d7
SW		 2966fail2:
2967 cm_id->rem_ref(cm_id);
2968 c4iw_put_ep(&ep->com);
2969fail1:
2970out:
2971 return err;
2972}
2973
2974int c4iw_destroy_listen(struct iw_cm_id *cm_id)
2975{
2976 int err;
2977 struct c4iw_listen_ep *ep = to_listen_ep(cm_id);
2978
2979 PDBG("%s ep %p\n", __func__, ep);
2980
2981 might_sleep();
2982 state_set(&ep->com, DEAD);
830662f6
VP		 2983 if (ep->com.dev->rdev.lldi.enable_fw_ofld_conn &&
2984 ep->com.local_addr.ss_family == AF_INET) {
1cab775c
VP		 2985 err = cxgb4_remove_server_filter(
2986 ep->com.dev->rdev.lldi.ports[0], ep->stid,
2987 ep->com.dev->rdev.lldi.rxq_ids[0], 0);
2988 } else {
2989 c4iw_init_wr_wait(&ep->com.wr_wait);
830662f6
VP		 2990 err = cxgb4_remove_server(
2991 ep->com.dev->rdev.lldi.ports[0], ep->stid,
2992 ep->com.dev->rdev.lldi.rxq_ids[0], 0);
1cab775c
VP		 2993 if (err)
2994 goto done;
2995 err = c4iw_wait_for_reply(&ep->com.dev->rdev, &ep->com.wr_wait,
2996 0, 0, __func__);
2997 }
793dad94 2998 remove_handle(ep->com.dev, &ep->com.dev->stid_idr, ep->stid);
830662f6
VP		 2999 cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid,
3000 ep->com.local_addr.ss_family);
cfdda9d7 3001done:
cfdda9d7
SW		 3002 cm_id->rem_ref(cm_id);
3003 c4iw_put_ep(&ep->com);
3004 return err;
3005}
3006
3007int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp)
3008{
3009 int ret = 0;
cfdda9d7
SW		 3010 int close = 0;
3011 int fatal = 0;
3012 struct c4iw_rdev *rdev;
cfdda9d7 3013
2f5b48c3 3014 mutex_lock(&ep->com.mutex);
cfdda9d7
SW		 3015
3016 PDBG("%s ep %p state %s, abrupt %d\n", __func__, ep,
3017 states[ep->com.state], abrupt);
3018
3019 rdev = &ep->com.dev->rdev;
3020 if (c4iw_fatal_error(rdev)) {
3021 fatal = 1;
3022 close_complete_upcall(ep);
3023 ep->com.state = DEAD;
3024 }
3025 switch (ep->com.state) {
3026 case MPA_REQ_WAIT:
3027 case MPA_REQ_SENT:
3028 case MPA_REQ_RCVD:
3029 case MPA_REP_SENT:
3030 case FPDU_MODE:
3031 close = 1;
3032 if (abrupt)
3033 ep->com.state = ABORTING;
3034 else {
3035 ep->com.state = CLOSING;
ca5a2202 3036 start_ep_timer(ep);
cfdda9d7
SW		 3037 }
3038 set_bit(CLOSE_SENT, &ep->com.flags);
3039 break;
3040 case CLOSING:
3041 if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) {
3042 close = 1;
3043 if (abrupt) {
ca5a2202 3044 stop_ep_timer(ep);
cfdda9d7
SW		 3045 ep->com.state = ABORTING;
3046 } else
3047 ep->com.state = MORIBUND;
3048 }
3049 break;
3050 case MORIBUND:
3051 case ABORTING:
3052 case DEAD:
3053 PDBG("%s ignoring disconnect ep %p state %u\n",
3054 __func__, ep, ep->com.state);
3055 break;
3056 default:
3057 BUG();
3058 break;
3059 }
3060
cfdda9d7 3061 if (close) {
8da7e7a5 3062 if (abrupt) {
793dad94 3063 set_bit(EP_DISC_ABORT, &ep->com.history);
8da7e7a5
SW		 3064 close_complete_upcall(ep);
3065 ret = send_abort(ep, NULL, gfp);
793dad94
VP		 3066 } else {
3067 set_bit(EP_DISC_CLOSE, &ep->com.history);
cfdda9d7 3068 ret = send_halfclose(ep, gfp);
793dad94 3069 }
cfdda9d7
SW		 3070 if (ret)
3071 fatal = 1;
3072 }
8da7e7a5 3073 mutex_unlock(&ep->com.mutex);
cfdda9d7
SW		 3074 if (fatal)
3075 release_ep_resources(ep);
3076 return ret;
3077}
3078
1cab775c
VP		 3079static void active_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb,
3080 struct cpl_fw6_msg_ofld_connection_wr_rpl *req)
3081{
3082 struct c4iw_ep *ep;
793dad94 3083 int atid = be32_to_cpu(req->tid);
1cab775c 3084
ef5d6355
VP		 3085 ep = (struct c4iw_ep *)lookup_atid(dev->rdev.lldi.tids,
3086 (__force u32) req->tid);
1cab775c
VP		 3087 if (!ep)
3088 return;
3089
3090 switch (req->retval) {
3091 case FW_ENOMEM:
793dad94
VP		 3092 set_bit(ACT_RETRY_NOMEM, &ep->com.history);
3093 if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) {
3094 send_fw_act_open_req(ep, atid);
3095 return;
3096 }
1cab775c 3097 case FW_EADDRINUSE:
793dad94
VP		 3098 set_bit(ACT_RETRY_INUSE, &ep->com.history);
3099 if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) {
3100 send_fw_act_open_req(ep, atid);
3101 return;
3102 }
1cab775c
VP		 3103 break;
3104 default:
3105 pr_info("%s unexpected ofld conn wr retval %d\n",
3106 __func__, req->retval);
3107 break;
3108 }
793dad94
VP		 3109 pr_err("active ofld_connect_wr failure %d atid %d\n",
3110 req->retval, atid);
3111 mutex_lock(&dev->rdev.stats.lock);
3112 dev->rdev.stats.act_ofld_conn_fails++;
3113 mutex_unlock(&dev->rdev.stats.lock);
1cab775c 3114 connect_reply_upcall(ep, status2errno(req->retval));
793dad94
VP		 3115 state_set(&ep->com, DEAD);
3116 remove_handle(dev, &dev->atid_idr, atid);
3117 cxgb4_free_atid(dev->rdev.lldi.tids, atid);
3118 dst_release(ep->dst);
3119 cxgb4_l2t_release(ep->l2t);
3120 c4iw_put_ep(&ep->com);
1cab775c
VP		 3121}
3122
3123static void passive_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb,
3124 struct cpl_fw6_msg_ofld_connection_wr_rpl *req)
3125{
3126 struct sk_buff *rpl_skb;
3127 struct cpl_pass_accept_req *cpl;
3128 int ret;
3129
710a3110 3130 rpl_skb = (struct sk_buff *)(unsigned long)req->cookie;
1cab775c
VP		 3131 BUG_ON(!rpl_skb);
3132 if (req->retval) {
3133 PDBG("%s passive open failure %d\n", __func__, req->retval);
793dad94
VP		 3134 mutex_lock(&dev->rdev.stats.lock);
3135 dev->rdev.stats.pas_ofld_conn_fails++;
3136 mutex_unlock(&dev->rdev.stats.lock);
1cab775c
VP		 3137 kfree_skb(rpl_skb);
3138 } else {
3139 cpl = (struct cpl_pass_accept_req *)cplhdr(rpl_skb);
3140 OPCODE_TID(cpl) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ,
ef5d6355
VP		 3141 (__force u32) htonl(
3142 (__force u32) req->tid)));
1cab775c
VP		 3143 ret = pass_accept_req(dev, rpl_skb);
3144 if (!ret)
3145 kfree_skb(rpl_skb);
3146 }
3147 return;
3148}
3149
3150static int deferred_fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb)
2f5b48c3
SW		 3151{
3152 struct cpl_fw6_msg *rpl = cplhdr(skb);
1cab775c
VP		 3153 struct cpl_fw6_msg_ofld_connection_wr_rpl *req;
3154
3155 switch (rpl->type) {
3156 case FW6_TYPE_CQE:
3157 c4iw_ev_dispatch(dev, (struct t4_cqe *)&rpl->data[0]);
3158 break;
3159 case FW6_TYPE_OFLD_CONNECTION_WR_RPL:
3160 req = (struct cpl_fw6_msg_ofld_connection_wr_rpl *)rpl->data;
3161 switch (req->t_state) {
3162 case TCP_SYN_SENT:
3163 active_ofld_conn_reply(dev, skb, req);
3164 break;
3165 case TCP_SYN_RECV:
3166 passive_ofld_conn_reply(dev, skb, req);
3167 break;
3168 default:
3169 pr_err("%s unexpected ofld conn wr state %d\n",
3170 __func__, req->t_state);
3171 break;
3172 }
3173 break;
3174 }
3175 return 0;
3176}
3177
3178static void build_cpl_pass_accept_req(struct sk_buff *skb, int stid , u8 tos)
3179{
3180 u32 l2info;
f079af7a 3181 u16 vlantag, len, hdr_len, eth_hdr_len;
1cab775c
VP		 3182 u8 intf;
3183 struct cpl_rx_pkt *cpl = cplhdr(skb);
3184 struct cpl_pass_accept_req *req;
3185 struct tcp_options_received tmp_opt;
f079af7a 3186 struct c4iw_dev *dev;
1cab775c 3187
f079af7a 3188 dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *)));
1cab775c 3189 /* Store values from cpl_rx_pkt in temporary location. */
ef5d6355
VP		 3190 vlantag = (__force u16) cpl->vlan;
3191 len = (__force u16) cpl->len;
3192 l2info = (__force u32) cpl->l2info;
3193 hdr_len = (__force u16) cpl->hdr_len;
1cab775c
VP		 3194 intf = cpl->iff;
3195
3196 __skb_pull(skb, sizeof(*req) + sizeof(struct rss_header));
3197
3198 /*
3199 * We need to parse the TCP options from SYN packet.
3200 * to generate cpl_pass_accept_req.
3201 */
3202 memset(&tmp_opt, 0, sizeof(tmp_opt));
3203 tcp_clear_options(&tmp_opt);
1a2c6181 3204 tcp_parse_options(skb, &tmp_opt, 0, NULL);
1cab775c
VP		 3205
3206 req = (struct cpl_pass_accept_req *)__skb_push(skb, sizeof(*req));
3207 memset(req, 0, sizeof(*req));
3208 req->l2info = cpu_to_be16(V_SYN_INTF(intf) |
ef5d6355
VP		 3209 V_SYN_MAC_IDX(G_RX_MACIDX(
3210 (__force int) htonl(l2info))) |
1cab775c 3211 F_SYN_XACT_MATCH);
f079af7a
VP		 3212 eth_hdr_len = is_t4(dev->rdev.lldi.adapter_type) ?
3213 G_RX_ETHHDR_LEN((__force int) htonl(l2info)) :
3214 G_RX_T5_ETHHDR_LEN((__force int) htonl(l2info));
ef5d6355
VP		 3215 req->hdr_len = cpu_to_be32(V_SYN_RX_CHAN(G_RX_CHAN(
3216 (__force int) htonl(l2info))) |
3217 V_TCP_HDR_LEN(G_RX_TCPHDR_LEN(
3218 (__force int) htons(hdr_len))) |
3219 V_IP_HDR_LEN(G_RX_IPHDR_LEN(
3220 (__force int) htons(hdr_len))) |
f079af7a 3221 V_ETH_HDR_LEN(G_RX_ETHHDR_LEN(eth_hdr_len)));
ef5d6355
VP		 3222 req->vlan = (__force __be16) vlantag;
3223 req->len = (__force __be16) len;
1cab775c
VP		 3224 req->tos_stid = cpu_to_be32(PASS_OPEN_TID(stid) |
3225 PASS_OPEN_TOS(tos));
3226 req->tcpopt.mss = htons(tmp_opt.mss_clamp);
3227 if (tmp_opt.wscale_ok)
3228 req->tcpopt.wsf = tmp_opt.snd_wscale;
3229 req->tcpopt.tstamp = tmp_opt.saw_tstamp;
3230 if (tmp_opt.sack_ok)
3231 req->tcpopt.sack = 1;
3232 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ, 0));
3233 return;
3234}
3235
3236static void send_fw_pass_open_req(struct c4iw_dev *dev, struct sk_buff *skb,
3237 __be32 laddr, __be16 lport,
3238 __be32 raddr, __be16 rport,
3239 u32 rcv_isn, u32 filter, u16 window,
3240 u32 rss_qid, u8 port_id)
3241{
3242 struct sk_buff *req_skb;
3243 struct fw_ofld_connection_wr *req;
3244 struct cpl_pass_accept_req *cpl = cplhdr(skb);
3245
3246 req_skb = alloc_skb(sizeof(struct fw_ofld_connection_wr), GFP_KERNEL);
3247 req = (struct fw_ofld_connection_wr *)__skb_put(req_skb, sizeof(*req));
3248 memset(req, 0, sizeof(*req));
3249 req->op_compl = htonl(V_WR_OP(FW_OFLD_CONNECTION_WR) | FW_WR_COMPL(1));
3250 req->len16_pkd = htonl(FW_WR_LEN16(DIV_ROUND_UP(sizeof(*req), 16)));
3251 req->le.version_cpl = htonl(F_FW_OFLD_CONNECTION_WR_CPL);
ef5d6355 3252 req->le.filter = (__force __be32) filter;
1cab775c
VP		 3253 req->le.lport = lport;
3254 req->le.pport = rport;
3255 req->le.u.ipv4.lip = laddr;
3256 req->le.u.ipv4.pip = raddr;
3257 req->tcb.rcv_nxt = htonl(rcv_isn + 1);
3258 req->tcb.rcv_adv = htons(window);
3259 req->tcb.t_state_to_astid =
3260 htonl(V_FW_OFLD_CONNECTION_WR_T_STATE(TCP_SYN_RECV) |
3261 V_FW_OFLD_CONNECTION_WR_RCV_SCALE(cpl->tcpopt.wsf) |
3262 V_FW_OFLD_CONNECTION_WR_ASTID(
3263 GET_PASS_OPEN_TID(ntohl(cpl->tos_stid))));
3264
3265 /*
3266 * We store the qid in opt2 which will be used by the firmware
3267 * to send us the wr response.
3268 */
3269 req->tcb.opt2 = htonl(V_RSS_QUEUE(rss_qid));
3270
3271 /*
3272 * We initialize the MSS index in TCB to 0xF.
3273 * So that when driver sends cpl_pass_accept_rpl
3274 * TCB picks up the correct value. If this was 0
3275 * TP will ignore any value > 0 for MSS index.
3276 */
3277 req->tcb.opt0 = cpu_to_be64(V_MSS_IDX(0xF));
710a3110 3278 req->cookie = (unsigned long)skb;
1cab775c
VP		 3279
3280 set_wr_txq(req_skb, CPL_PRIORITY_CONTROL, port_id);
3281 cxgb4_ofld_send(dev->rdev.lldi.ports[0], req_skb);
3282}
3283
3284/*
3285 * Handler for CPL_RX_PKT message. Need to handle cpl_rx_pkt
3286 * messages when a filter is being used instead of server to
3287 * redirect a syn packet. When packets hit filter they are redirected
3288 * to the offload queue and driver tries to establish the connection
3289 * using firmware work request.
3290 */
3291static int rx_pkt(struct c4iw_dev *dev, struct sk_buff *skb)
3292{
3293 int stid;
3294 unsigned int filter;
3295 struct ethhdr *eh = NULL;
3296 struct vlan_ethhdr *vlan_eh = NULL;
3297 struct iphdr *iph;
3298 struct tcphdr *tcph;
3299 struct rss_header *rss = (void *)skb->data;
3300 struct cpl_rx_pkt *cpl = (void *)skb->data;
3301 struct cpl_pass_accept_req *req = (void *)(rss + 1);
3302 struct l2t_entry *e;
3303 struct dst_entry *dst;
1cab775c
VP		 3304 struct c4iw_ep *lep;
3305 u16 window;
3306 struct port_info *pi;
3307 struct net_device *pdev;
f079af7a 3308 u16 rss_qid, eth_hdr_len;
1cab775c
VP		 3309 int step;
3310 u32 tx_chan;
3311 struct neighbour *neigh;
3312
3313 /* Drop all non-SYN packets */
3314 if (!(cpl->l2info & cpu_to_be32(F_RXF_SYN)))
3315 goto reject;
3316
3317 /*
3318 * Drop all packets which did not hit the filter.
3319 * Unlikely to happen.
3320 */
3321 if (!(rss->filter_hit && rss->filter_tid))
3322 goto reject;
3323
3324 /*
3325 * Calculate the server tid from filter hit index from cpl_rx_pkt.
3326 */
a4ea025f 3327 stid = (__force int) cpu_to_be32((__force u32) rss->hash_val);
1cab775c
VP		 3328
3329 lep = (struct c4iw_ep *)lookup_stid(dev->rdev.lldi.tids, stid);
3330 if (!lep) {
3331 PDBG("%s connect request on invalid stid %d\n", __func__, stid);
3332 goto reject;
3333 }
3334
f079af7a
VP		 3335 eth_hdr_len = is_t4(dev->rdev.lldi.adapter_type) ?
3336 G_RX_ETHHDR_LEN(htonl(cpl->l2info)) :
3337 G_RX_T5_ETHHDR_LEN(htonl(cpl->l2info));
3338 if (eth_hdr_len == ETH_HLEN) {
1cab775c
VP		 3339 eh = (struct ethhdr *)(req + 1);
3340 iph = (struct iphdr *)(eh + 1);
3341 } else {
3342 vlan_eh = (struct vlan_ethhdr *)(req + 1);
3343 iph = (struct iphdr *)(vlan_eh + 1);
3344 skb->vlan_tci = ntohs(cpl->vlan);
3345 }
3346
3347 if (iph->version != 0x4)
3348 goto reject;
3349
3350 tcph = (struct tcphdr *)(iph + 1);
3351 skb_set_network_header(skb, (void *)iph - (void *)rss);
3352 skb_set_transport_header(skb, (void *)tcph - (void *)rss);
3353 skb_get(skb);
3354
3355 PDBG("%s lip 0x%x lport %u pip 0x%x pport %u tos %d\n", __func__,
3356 ntohl(iph->daddr), ntohs(tcph->dest), ntohl(iph->saddr),
3357 ntohs(tcph->source), iph->tos);
3358
830662f6
VP		 3359 dst = find_route(dev, iph->daddr, iph->saddr, tcph->dest, tcph->source,
3360 iph->tos);
3361 if (!dst) {
1cab775c
VP		 3362 pr_err("%s - failed to find dst entry!\n",
3363 __func__);
3364 goto reject;
3365 }
1cab775c
VP		 3366 neigh = dst_neigh_lookup_skb(dst, skb);
3367
aaa0c23c
ZZ		 3368 if (!neigh) {
3369 pr_err("%s - failed to allocate neigh!\n",
3370 __func__);
3371 goto free_dst;
3372 }
3373
1cab775c
VP		 3374 if (neigh->dev->flags & IFF_LOOPBACK) {
3375 pdev = ip_dev_find(&init_net, iph->daddr);
3376 e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh,
3377 pdev, 0);
3378 pi = (struct port_info *)netdev_priv(pdev);
3379 tx_chan = cxgb4_port_chan(pdev);
3380 dev_put(pdev);
3381 } else {
830662f6 3382 pdev = get_real_dev(neigh->dev);
1cab775c 3383 e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh,
830662f6
VP		 3384 pdev, 0);
3385 pi = (struct port_info *)netdev_priv(pdev);
3386 tx_chan = cxgb4_port_chan(pdev);
1cab775c
VP		 3387 }
3388 if (!e) {
3389 pr_err("%s - failed to allocate l2t entry!\n",
3390 __func__);
3391 goto free_dst;
3392 }
3393
3394 step = dev->rdev.lldi.nrxq / dev->rdev.lldi.nchan;
3395 rss_qid = dev->rdev.lldi.rxq_ids[pi->port_id * step];
ef5d6355 3396 window = (__force u16) htons((__force u16)tcph->window);
1cab775c
VP		 3397
3398 /* Calcuate filter portion for LE region. */
ef5d6355 3399 filter = (__force unsigned int) cpu_to_be32(select_ntuple(dev, dst, e));
1cab775c
VP		 3400
3401 /*
3402 * Synthesize the cpl_pass_accept_req. We have everything except the
3403 * TID. Once firmware sends a reply with TID we update the TID field
3404 * in cpl and pass it through the regular cpl_pass_accept_req path.
3405 */
3406 build_cpl_pass_accept_req(skb, stid, iph->tos);
3407 send_fw_pass_open_req(dev, skb, iph->daddr, tcph->dest, iph->saddr,
3408 tcph->source, ntohl(tcph->seq), filter, window,
3409 rss_qid, pi->port_id);
3410 cxgb4_l2t_release(e);
3411free_dst:
3412 dst_release(dst);
3413reject:
2f5b48c3
SW		 3414 return 0;
3415}
3416
be4c9bad
RD		 3417/*
3418 * These are the real handlers that are called from a
3419 * work queue.
3420 */
3421static c4iw_handler_func work_handlers[NUM_CPL_CMDS] = {
3422 [CPL_ACT_ESTABLISH] = act_establish,
3423 [CPL_ACT_OPEN_RPL] = act_open_rpl,
3424 [CPL_RX_DATA] = rx_data,
3425 [CPL_ABORT_RPL_RSS] = abort_rpl,
3426 [CPL_ABORT_RPL] = abort_rpl,
3427 [CPL_PASS_OPEN_RPL] = pass_open_rpl,
3428 [CPL_CLOSE_LISTSRV_RPL] = close_listsrv_rpl,
3429 [CPL_PASS_ACCEPT_REQ] = pass_accept_req,
3430 [CPL_PASS_ESTABLISH] = pass_establish,
3431 [CPL_PEER_CLOSE] = peer_close,
3432 [CPL_ABORT_REQ_RSS] = peer_abort,
3433 [CPL_CLOSE_CON_RPL] = close_con_rpl,
3434 [CPL_RDMA_TERMINATE] = terminate,
2f5b48c3 3435 [CPL_FW4_ACK] = fw4_ack,
1cab775c
VP		 3436 [CPL_FW6_MSG] = deferred_fw6_msg,
3437 [CPL_RX_PKT] = rx_pkt
be4c9bad
RD		 3438};
3439
3440static void process_timeout(struct c4iw_ep *ep)
3441{
3442 struct c4iw_qp_attributes attrs;
3443 int abort = 1;
3444
2f5b48c3 3445 mutex_lock(&ep->com.mutex);
be4c9bad
RD		 3446 PDBG("%s ep %p tid %u state %d\n", __func__, ep, ep->hwtid,
3447 ep->com.state);
793dad94 3448 set_bit(TIMEDOUT, &ep->com.history);
be4c9bad
RD		 3449 switch (ep->com.state) {
3450 case MPA_REQ_SENT:
3451 __state_set(&ep->com, ABORTING);
3452 connect_reply_upcall(ep, -ETIMEDOUT);
3453 break;
3454 case MPA_REQ_WAIT:
3455 __state_set(&ep->com, ABORTING);
3456 break;
3457 case CLOSING:
3458 case MORIBUND:
3459 if (ep->com.cm_id && ep->com.qp) {
3460 attrs.next_state = C4IW_QP_STATE_ERROR;
3461 c4iw_modify_qp(ep->com.qp->rhp,
3462 ep->com.qp, C4IW_QP_ATTR_NEXT_STATE,
3463 &attrs, 1);
3464 }
3465 __state_set(&ep->com, ABORTING);
3466 break;
3467 default:
76f267b7 3468 WARN(1, "%s unexpected state ep %p tid %u state %u\n",
be4c9bad 3469 __func__, ep, ep->hwtid, ep->com.state);
be4c9bad
RD		 3470 abort = 0;
3471 }
2f5b48c3 3472 mutex_unlock(&ep->com.mutex);
be4c9bad
RD		 3473 if (abort)
3474 abort_connection(ep, NULL, GFP_KERNEL);
3475 c4iw_put_ep(&ep->com);
3476}
3477
3478static void process_timedout_eps(void)
3479{
3480 struct c4iw_ep *ep;
3481
3482 spin_lock_irq(&timeout_lock);
3483 while (!list_empty(&timeout_list)) {
3484 struct list_head *tmp;
3485
3486 tmp = timeout_list.next;
3487 list_del(tmp);
3488 spin_unlock_irq(&timeout_lock);
3489 ep = list_entry(tmp, struct c4iw_ep, entry);
3490 process_timeout(ep);
3491 spin_lock_irq(&timeout_lock);
3492 }
3493 spin_unlock_irq(&timeout_lock);
3494}
3495
3496static void process_work(struct work_struct *work)
3497{
3498 struct sk_buff *skb = NULL;
3499 struct c4iw_dev *dev;
c1d7356c 3500 struct cpl_act_establish *rpl;
be4c9bad
RD		 3501 unsigned int opcode;
3502 int ret;
3503
3504 while ((skb = skb_dequeue(&rxq))) {
3505 rpl = cplhdr(skb);
3506 dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *)));
3507 opcode = rpl->ot.opcode;
3508
3509 BUG_ON(!work_handlers[opcode]);
3510 ret = work_handlers[opcode](dev, skb);
3511 if (!ret)
3512 kfree_skb(skb);
3513 }
3514 process_timedout_eps();
3515}
3516
3517static DECLARE_WORK(skb_work, process_work);
3518
3519static void ep_timeout(unsigned long arg)
3520{
3521 struct c4iw_ep *ep = (struct c4iw_ep *)arg;
1ec779cc 3522 int kickit = 0;
be4c9bad
RD		 3523
3524 spin_lock(&timeout_lock);
1ec779cc
VP		 3525 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) {
3526 list_add_tail(&ep->entry, &timeout_list);
3527 kickit = 1;
3528 }
be4c9bad 3529 spin_unlock(&timeout_lock);
1ec779cc
VP		 3530 if (kickit)
3531 queue_work(workq, &skb_work);
be4c9bad
RD		 3532}
3533
cfdda9d7
SW		 3534/*
3535 * All the CM events are handled on a work queue to have a safe context.
3536 */
3537static int sched(struct c4iw_dev *dev, struct sk_buff *skb)
3538{
3539
3540 /*
3541 * Save dev in the skb->cb area.
3542 */
3543 *((struct c4iw_dev **) (skb->cb + sizeof(void *))) = dev;
3544
3545 /*
3546 * Queue the skb and schedule the worker thread.
3547 */
3548 skb_queue_tail(&rxq, skb);
3549 queue_work(workq, &skb_work);
3550 return 0;
3551}
3552
3553static int set_tcb_rpl(struct c4iw_dev *dev, struct sk_buff *skb)
3554{
3555 struct cpl_set_tcb_rpl *rpl = cplhdr(skb);
3556
3557 if (rpl->status != CPL_ERR_NONE) {
3558 printk(KERN_ERR MOD "Unexpected SET_TCB_RPL status %u "
3559 "for tid %u\n", rpl->status, GET_TID(rpl));
3560 }
2f5b48c3 3561 kfree_skb(skb);
cfdda9d7
SW		 3562 return 0;
3563}
3564
be4c9bad
RD		 3565static int fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb)
3566{
3567 struct cpl_fw6_msg *rpl = cplhdr(skb);
3568 struct c4iw_wr_wait *wr_waitp;
3569 int ret;
3570
3571 PDBG("%s type %u\n", __func__, rpl->type);
3572
3573 switch (rpl->type) {
5be78ee9 3574 case FW6_TYPE_WR_RPL:
be4c9bad 3575 ret = (int)((be64_to_cpu(rpl->data[0]) >> 8) & 0xff);
c8e081a1 3576 wr_waitp = (struct c4iw_wr_wait *)(__force unsigned long) rpl->data[1];
be4c9bad 3577 PDBG("%s wr_waitp %p ret %u\n", __func__, wr_waitp, ret);
d9594d99
SW		 3578 if (wr_waitp)
3579 c4iw_wake_up(wr_waitp, ret ? -ret : 0);
2f5b48c3 3580 kfree_skb(skb);
be4c9bad 3581 break;
5be78ee9 3582 case FW6_TYPE_CQE:
5be78ee9 3583 case FW6_TYPE_OFLD_CONNECTION_WR_RPL:
1cab775c 3584 sched(dev, skb);
5be78ee9 3585 break;
be4c9bad
RD		 3586 default:
3587 printk(KERN_ERR MOD "%s unexpected fw6 msg type %u\n", __func__,
3588 rpl->type);
2f5b48c3 3589 kfree_skb(skb);
be4c9bad
RD		 3590 break;
3591 }
3592 return 0;
3593}
3594
8da7e7a5
SW		 3595static int peer_abort_intr(struct c4iw_dev *dev, struct sk_buff *skb)
3596{
3597 struct cpl_abort_req_rss *req = cplhdr(skb);
3598 struct c4iw_ep *ep;
3599 struct tid_info *t = dev->rdev.lldi.tids;
3600 unsigned int tid = GET_TID(req);
3601
3602 ep = lookup_tid(t, tid);
14b92228
SW		 3603 if (!ep) {
3604 printk(KERN_WARNING MOD
3605 "Abort on non-existent endpoint, tid %d\n", tid);
3606 kfree_skb(skb);
3607 return 0;
3608 }
8da7e7a5
SW		 3609 if (is_neg_adv_abort(req->status)) {
3610 PDBG("%s neg_adv_abort ep %p tid %u\n", __func__, ep,
3611 ep->hwtid);
3612 kfree_skb(skb);
3613 return 0;
3614 }
3615 PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid,
3616 ep->com.state);
3617
3618 /*
3619 * Wake up any threads in rdma_init() or rdma_fini().
7c0a33d6
VP		 3620 * However, if we are on MPAv2 and want to retry with MPAv1
3621 * then, don't wake up yet.
8da7e7a5 3622 */
7c0a33d6
VP		 3623 if (mpa_rev == 2 && !ep->tried_with_mpa_v1) {
3624 if (ep->com.state != MPA_REQ_SENT)
3625 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
3626 } else
3627 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
8da7e7a5
SW		 3628 sched(dev, skb);
3629 return 0;
3630}
3631
be4c9bad
RD		 3632/*
3633 * Most upcalls from the T4 Core go to sched() to
3634 * schedule the processing on a work queue.
3635 */
3636c4iw_handler_func c4iw_handlers[NUM_CPL_CMDS] = {
3637 [CPL_ACT_ESTABLISH] = sched,
3638 [CPL_ACT_OPEN_RPL] = sched,
3639 [CPL_RX_DATA] = sched,
3640 [CPL_ABORT_RPL_RSS] = sched,
3641 [CPL_ABORT_RPL] = sched,
3642 [CPL_PASS_OPEN_RPL] = sched,
3643 [CPL_CLOSE_LISTSRV_RPL] = sched,
3644 [CPL_PASS_ACCEPT_REQ] = sched,
3645 [CPL_PASS_ESTABLISH] = sched,
3646 [CPL_PEER_CLOSE] = sched,
3647 [CPL_CLOSE_CON_RPL] = sched,
8da7e7a5 3648 [CPL_ABORT_REQ_RSS] = peer_abort_intr,
be4c9bad
RD		 3649 [CPL_RDMA_TERMINATE] = sched,
3650 [CPL_FW4_ACK] = sched,
3651 [CPL_SET_TCB_RPL] = set_tcb_rpl,
1cab775c
VP		 3652 [CPL_FW6_MSG] = fw6_msg,
3653 [CPL_RX_PKT] = sched
be4c9bad
RD		 3654};
3655
cfdda9d7
SW		 3656int __init c4iw_cm_init(void)
3657{
be4c9bad 3658 spin_lock_init(&timeout_lock);
cfdda9d7
SW		 3659 skb_queue_head_init(&rxq);
3660
3661 workq = create_singlethread_workqueue("iw_cxgb4");
3662 if (!workq)
3663 return -ENOMEM;
3664
cfdda9d7
SW		 3665 return 0;
3666}
3667
3668void __exit c4iw_cm_term(void)
3669{
be4c9bad 3670 WARN_ON(!list_empty(&timeout_list));
cfdda9d7
SW		 3671 flush_workqueue(workq);
3672 destroy_workqueue(workq);
3673}
Linux kernel - Deliverables
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