FreeBSD kernel CXGBE device code
cm.c
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1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2009-2013, 2016 Chelsio, Inc. All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 */
34#include <sys/cdefs.h>
35__FBSDID("$FreeBSD$");
36
37#include "opt_inet.h"
38
39#ifdef TCP_OFFLOAD
40#include <sys/types.h>
41#include <sys/malloc.h>
42#include <sys/socket.h>
43#include <sys/socketvar.h>
44#include <sys/sockio.h>
45#include <sys/taskqueue.h>
46#include <netinet/in.h>
47#include <net/route.h>
48#include <net/route/nhop.h>
49
50#include <netinet/in_systm.h>
51#include <netinet/in_pcb.h>
52#include <netinet6/in6_pcb.h>
53#include <netinet/ip.h>
54#include <netinet/in_fib.h>
55#include <netinet6/in6_fib.h>
56#include <netinet6/scope6_var.h>
57#include <netinet/ip_var.h>
58#include <netinet/tcp_var.h>
59#include <netinet/tcp.h>
60#include <netinet/tcpip.h>
61
62#include <netinet/toecore.h>
63
64struct sge_iq;
65struct rss_header;
66struct cpl_set_tcb_rpl;
67#include <linux/types.h>
68#include "offload.h"
69#include "tom/t4_tom.h"
70
71#define TOEPCB(so) ((struct toepcb *)(so_sototcpcb((so))->t_toe))
72
73#include "iw_cxgbe.h"
74#include <linux/module.h>
75#include <linux/workqueue.h>
76#include <linux/if_vlan.h>
77#include <net/netevent.h>
78#include <rdma/rdma_cm.h>
79
80static spinlock_t req_lock;
81static TAILQ_HEAD(c4iw_ep_list, c4iw_ep_common) req_list;
82static struct work_struct c4iw_task;
83static struct workqueue_struct *c4iw_taskq;
84static LIST_HEAD(err_cqe_list);
85static spinlock_t err_cqe_lock;
86static LIST_HEAD(listen_port_list);
87static DEFINE_MUTEX(listen_port_mutex);
88
89static void process_req(struct work_struct *ctx);
90static void start_ep_timer(struct c4iw_ep *ep);
91static int stop_ep_timer(struct c4iw_ep *ep);
92static int set_tcpinfo(struct c4iw_ep *ep);
93static void process_timeout(struct c4iw_ep *ep);
94static void process_err_cqes(void);
95static void *alloc_ep(int size, gfp_t flags);
96static void close_socket(struct socket *so);
97static int send_mpa_req(struct c4iw_ep *ep);
98static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen);
99static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen);
100static void close_complete_upcall(struct c4iw_ep *ep, int status);
101static int send_abort(struct c4iw_ep *ep);
102static void peer_close_upcall(struct c4iw_ep *ep);
103static void peer_abort_upcall(struct c4iw_ep *ep);
104static void connect_reply_upcall(struct c4iw_ep *ep, int status);
105static int connect_request_upcall(struct c4iw_ep *ep);
106static void established_upcall(struct c4iw_ep *ep);
107static int process_mpa_reply(struct c4iw_ep *ep);
108static int process_mpa_request(struct c4iw_ep *ep);
109static void process_peer_close(struct c4iw_ep *ep);
110static void process_conn_error(struct c4iw_ep *ep);
111static void process_close_complete(struct c4iw_ep *ep);
112static void ep_timeout(unsigned long arg);
113static void setiwsockopt(struct socket *so);
114static void init_iwarp_socket(struct socket *so, void *arg);
115static void uninit_iwarp_socket(struct socket *so);
116static void process_data(struct c4iw_ep *ep);
117static void process_connected(struct c4iw_ep *ep);
118static int c4iw_so_upcall(struct socket *so, void *arg, int waitflag);
119static void process_socket_event(struct c4iw_ep *ep);
120static void release_ep_resources(struct c4iw_ep *ep);
121static int process_terminate(struct c4iw_ep *ep);
122static int terminate(struct sge_iq *iq, const struct rss_header *rss,
123 struct mbuf *m);
124static int add_ep_to_req_list(struct c4iw_ep *ep, int ep_events);
125static struct listen_port_info *
126add_ep_to_listenlist(struct c4iw_listen_ep *lep);
127static int rem_ep_from_listenlist(struct c4iw_listen_ep *lep);
128static struct c4iw_listen_ep *
129find_real_listen_ep(struct c4iw_listen_ep *master_lep, struct socket *so);
130static int get_ifnet_from_raddr(struct sockaddr_storage *raddr,
131 struct ifnet **ifp);
132static void process_newconn(struct c4iw_listen_ep *master_lep,
133 struct socket *new_so);
134#define START_EP_TIMER(ep) \
135 do { \
136 CTR3(KTR_IW_CXGBE, "start_ep_timer (%s:%d) ep %p", \
137 __func__, __LINE__, (ep)); \
138 start_ep_timer(ep); \
139 } while (0)
140
141#define STOP_EP_TIMER(ep) \
142 ({ \
143 CTR3(KTR_IW_CXGBE, "stop_ep_timer (%s:%d) ep %p", \
144 __func__, __LINE__, (ep)); \
145 stop_ep_timer(ep); \
146 })
147
148#define GET_LOCAL_ADDR(pladdr, so) \
149 do { \
150 struct sockaddr_storage *__a = NULL; \
151 struct inpcb *__inp = sotoinpcb(so); \
152 KASSERT(__inp != NULL, \
153 ("GET_LOCAL_ADDR(%s):so:%p, inp = NULL", __func__, so)); \
154 if (__inp->inp_vflag & INP_IPV4) \
155 in_getsockaddr(so, (struct sockaddr **)&__a); \
156 else \
157 in6_getsockaddr(so, (struct sockaddr **)&__a); \
158 *(pladdr) = *__a; \
159 free(__a, M_SONAME); \
160 } while (0)
161
162#define GET_REMOTE_ADDR(praddr, so) \
163 do { \
164 struct sockaddr_storage *__a = NULL; \
165 struct inpcb *__inp = sotoinpcb(so); \
166 KASSERT(__inp != NULL, \
167 ("GET_REMOTE_ADDR(%s):so:%p, inp = NULL", __func__, so)); \
168 if (__inp->inp_vflag & INP_IPV4) \
169 in_getpeeraddr(so, (struct sockaddr **)&__a); \
170 else \
171 in6_getpeeraddr(so, (struct sockaddr **)&__a); \
172 *(praddr) = *__a; \
173 free(__a, M_SONAME); \
174 } while (0)
175
176static char *states[] = {
177 "idle",
178 "listen",
179 "connecting",
180 "mpa_wait_req",
181 "mpa_req_sent",
182 "mpa_req_rcvd",
183 "mpa_rep_sent",
184 "fpdu_mode",
185 "aborting",
186 "closing",
187 "moribund",
188 "dead",
189 NULL,
190};
191
192static void deref_cm_id(struct c4iw_ep_common *epc)
193{
194 epc->cm_id->rem_ref(epc->cm_id);
195 epc->cm_id = NULL;
196 set_bit(CM_ID_DEREFED, &epc->history);
197}
198
199static void ref_cm_id(struct c4iw_ep_common *epc)
200{
201 set_bit(CM_ID_REFED, &epc->history);
202 epc->cm_id->add_ref(epc->cm_id);
203}
204
205static void deref_qp(struct c4iw_ep *ep)
206{
207 c4iw_qp_rem_ref(&ep->com.qp->ibqp);
208 clear_bit(QP_REFERENCED, &ep->com.flags);
209 set_bit(QP_DEREFED, &ep->com.history);
210}
211
212static void ref_qp(struct c4iw_ep *ep)
213{
214 set_bit(QP_REFERENCED, &ep->com.flags);
215 set_bit(QP_REFED, &ep->com.history);
216 c4iw_qp_add_ref(&ep->com.qp->ibqp);
217}
218/* allocated per TCP port while listening */
219struct listen_port_info {
220 uint16_t port_num; /* TCP port address */
221 struct list_head list; /* belongs to listen_port_list */
222 struct list_head lep_list; /* per port lep list */
223 uint32_t refcnt; /* number of lep's listening */
224};
225
226/*
227 * Following two lists are used to manage INADDR_ANY listeners:
228 * 1)listen_port_list
229 * 2)lep_list
230 *
231 * Below is the INADDR_ANY listener lists overview on a system with a two port
232 * adapter:
233 * |------------------|
234 * |listen_port_list |
235 * |------------------|
236 * |
237 * | |-----------| |-----------|
238 * | | port_num:X| | port_num:X|
239 * |--------------|-list------|-------|-list------|-------....
240 * | lep_list----| | lep_list----|
241 * | refcnt | | | refcnt | |
242 * | | | | | |
243 * | | | | | |
244 * |-----------| | |-----------| |
245 * | |
246 * | |
247 * | |
248 * | | lep1 lep2
249 * | | |----------------| |----------------|
250 * | |----| listen_ep_list |----| listen_ep_list |
251 * | |----------------| |----------------|
252 * |
253 * |
254 * | lep1 lep2
255 * | |----------------| |----------------|
256 * |---| listen_ep_list |----| listen_ep_list |
257 * |----------------| |----------------|
258 *
259 * Because of two port adapter, the number of lep's are two(lep1 & lep2) for
260 * each TCP port number.
261 *
262 * Here 'lep1' is always marked as Master lep, because solisten() is always
263 * called through first lep.
264 *
265 */
266static struct listen_port_info *
267add_ep_to_listenlist(struct c4iw_listen_ep *lep)
268{
269 uint16_t port;
270 struct listen_port_info *port_info = NULL;
271 struct sockaddr_storage *laddr = &lep->com.local_addr;
272
273 port = (laddr->ss_family == AF_INET) ?
274 ((struct sockaddr_in *)laddr)->sin_port :
275 ((struct sockaddr_in6 *)laddr)->sin6_port;
276
277 mutex_lock(&listen_port_mutex);
278
279 list_for_each_entry(port_info, &listen_port_list, list)
280 if (port_info->port_num == port)
281 goto found_port;
282
283 port_info = malloc(sizeof(*port_info), M_CXGBE, M_WAITOK);
284 port_info->port_num = port;
285 port_info->refcnt = 0;
286
287 list_add_tail(&port_info->list, &listen_port_list);
288 INIT_LIST_HEAD(&port_info->lep_list);
289
290found_port:
291 port_info->refcnt++;
292 list_add_tail(&lep->listen_ep_list, &port_info->lep_list);
293 mutex_unlock(&listen_port_mutex);
294 return port_info;
295}
296
297static int
298rem_ep_from_listenlist(struct c4iw_listen_ep *lep)
299{
300 uint16_t port;
301 struct listen_port_info *port_info = NULL;
302 struct sockaddr_storage *laddr = &lep->com.local_addr;
303 int refcnt = 0;
304
305 port = (laddr->ss_family == AF_INET) ?
306 ((struct sockaddr_in *)laddr)->sin_port :
307 ((struct sockaddr_in6 *)laddr)->sin6_port;
308
309 mutex_lock(&listen_port_mutex);
310
311 /* get the port_info structure based on the lep's port address */
312 list_for_each_entry(port_info, &listen_port_list, list) {
313 if (port_info->port_num == port) {
314 port_info->refcnt--;
315 refcnt = port_info->refcnt;
316 /* remove the current lep from the listen list */
317 list_del(&lep->listen_ep_list);
318 if (port_info->refcnt == 0) {
319 /* Remove this entry from the list as there
320 * are no more listeners for this port_num.
321 */
322 list_del(&port_info->list);
323 kfree(port_info);
324 }
325 break;
326 }
327 }
328 mutex_unlock(&listen_port_mutex);
329 return refcnt;
330}
331
332/*
333 * Find the lep that belongs to the ifnet on which the SYN frame was received.
334 */
335struct c4iw_listen_ep *
336find_real_listen_ep(struct c4iw_listen_ep *master_lep, struct socket *so)
337{
338 struct adapter *adap = NULL;
339 struct c4iw_listen_ep *lep = NULL;
340 struct ifnet *ifp = NULL, *hw_ifp = NULL;
341 struct listen_port_info *port_info = NULL;
342 int i = 0, found_portinfo = 0, found_lep = 0;
343 uint16_t port;
344
345 /*
346 * STEP 1: Figure out 'ifp' of the physical interface, not pseudo
347 * interfaces like vlan, lagg, etc..
348 * TBD: lagg support, lagg + vlan support.
349 */
350 ifp = TOEPCB(so)->l2te->ifp;
351 if (ifp->if_type == IFT_L2VLAN) {
352 hw_ifp = VLAN_TRUNKDEV(ifp);
353 if (hw_ifp == NULL) {
354 CTR4(KTR_IW_CXGBE, "%s: Failed to get parent ifnet of "
355 "vlan ifnet %p, sock %p, master_lep %p",
356 __func__, ifp, so, master_lep);
357 return (NULL);
358 }
359 } else
360 hw_ifp = ifp;
361
362 /* STEP 2: Find 'port_info' with listener local port address. */
363 port = (master_lep->com.local_addr.ss_family == AF_INET) ?
364 ((struct sockaddr_in *)&master_lep->com.local_addr)->sin_port :
365 ((struct sockaddr_in6 *)&master_lep->com.local_addr)->sin6_port;
366
367
368 mutex_lock(&listen_port_mutex);
369 list_for_each_entry(port_info, &listen_port_list, list)
370 if (port_info->port_num == port) {
371 found_portinfo =1;
372 break;
373 }
374 if (!found_portinfo)
375 goto out;
376
377 /* STEP 3: Traverse through list of lep's that are bound to the current
378 * TCP port address and find the lep that belongs to the ifnet on which
379 * the SYN frame was received.
380 */
381 list_for_each_entry(lep, &port_info->lep_list, listen_ep_list) {
382 adap = lep->com.dev->rdev.adap;
383 for_each_port(adap, i) {
384 if (hw_ifp == adap->port[i]->vi[0].ifp) {
385 found_lep =1;
386 goto out;
387 }
388 }
389 }
390out:
391 mutex_unlock(&listen_port_mutex);
392 return found_lep ? lep : (NULL);
393}
394
395static void process_timeout(struct c4iw_ep *ep)
396{
397 struct c4iw_qp_attributes attrs = {0};
398 int abort = 1;
399
400 CTR4(KTR_IW_CXGBE, "%s ep :%p, tid:%u, state %d", __func__,
401 ep, ep->hwtid, ep->com.state);
402 set_bit(TIMEDOUT, &ep->com.history);
403 switch (ep->com.state) {
404 case MPA_REQ_SENT:
405 connect_reply_upcall(ep, -ETIMEDOUT);
406 break;
407 case MPA_REQ_WAIT:
408 case MPA_REQ_RCVD:
409 case MPA_REP_SENT:
410 case FPDU_MODE:
411 break;
412 case CLOSING:
413 case MORIBUND:
414 if (ep->com.cm_id && ep->com.qp) {
415 attrs.next_state = C4IW_QP_STATE_ERROR;
416 c4iw_modify_qp(ep->com.dev, ep->com.qp,
417 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
418 }
419 close_complete_upcall(ep, -ETIMEDOUT);
420 break;
421 case ABORTING:
422 case DEAD:
423 /*
424 * These states are expected if the ep timed out at the same
425 * time as another thread was calling stop_ep_timer().
426 * So we silently do nothing for these states.
427 */
428 abort = 0;
429 break;
430 default:
431 CTR4(KTR_IW_CXGBE, "%s unexpected state ep %p tid %u state %u"
432 , __func__, ep, ep->hwtid, ep->com.state);
433 abort = 0;
434 }
435 if (abort)
436 c4iw_ep_disconnect(ep, 1, GFP_KERNEL);
437 c4iw_put_ep(&ep->com);
438 return;
439}
440
441struct cqe_list_entry {
442 struct list_head entry;
443 struct c4iw_dev *rhp;
444 struct t4_cqe err_cqe;
445};
446
447static void
448process_err_cqes(void)
449{
450 unsigned long flag;
451 struct cqe_list_entry *cle;
452
453 spin_lock_irqsave(&err_cqe_lock, flag);
454 while (!list_empty(&err_cqe_list)) {
455 struct list_head *tmp;
456 tmp = err_cqe_list.next;
457 list_del(tmp);
458 tmp->next = tmp->prev = NULL;
459 spin_unlock_irqrestore(&err_cqe_lock, flag);
460 cle = list_entry(tmp, struct cqe_list_entry, entry);
461 c4iw_ev_dispatch(cle->rhp, &cle->err_cqe);
462 free(cle, M_CXGBE);
463 spin_lock_irqsave(&err_cqe_lock, flag);
464 }
465 spin_unlock_irqrestore(&err_cqe_lock, flag);
466
467 return;
468}
469
470static void
471process_req(struct work_struct *ctx)
472{
473 struct c4iw_ep_common *epc;
474 unsigned long flag;
475 int ep_events;
476
477 process_err_cqes();
478 spin_lock_irqsave(&req_lock, flag);
479 while (!TAILQ_EMPTY(&req_list)) {
480 epc = TAILQ_FIRST(&req_list);
481 TAILQ_REMOVE(&req_list, epc, entry);
482 epc->entry.tqe_prev = NULL;
483 ep_events = epc->ep_events;
484 epc->ep_events = 0;
485 spin_unlock_irqrestore(&req_lock, flag);
486 mutex_lock(&epc->mutex);
487 CTR5(KTR_IW_CXGBE, "%s: so %p, ep %p, ep_state %s events 0x%x",
488 __func__, epc->so, epc, states[epc->state], ep_events);
489 if (ep_events & C4IW_EVENT_TERM)
490 process_terminate((struct c4iw_ep *)epc);
491 if (ep_events & C4IW_EVENT_TIMEOUT)
492 process_timeout((struct c4iw_ep *)epc);
493 if (ep_events & C4IW_EVENT_SOCKET)
494 process_socket_event((struct c4iw_ep *)epc);
495 mutex_unlock(&epc->mutex);
496 c4iw_put_ep(epc);
497 process_err_cqes();
498 spin_lock_irqsave(&req_lock, flag);
499 }
500 spin_unlock_irqrestore(&req_lock, flag);
501}
502
503/*
504 * XXX: doesn't belong here in the iWARP driver.
505 * XXX: assumes that the connection was offloaded by cxgbe/t4_tom if TF_TOE is
506 * set. Is this a valid assumption for active open?
507 */
508static int
509set_tcpinfo(struct c4iw_ep *ep)
510{
511 struct socket *so = ep->com.so;
512 struct inpcb *inp = sotoinpcb(so);
513 struct tcpcb *tp;
514 struct toepcb *toep;
515 int rc = 0;
516
517 INP_WLOCK(inp);
518 tp = intotcpcb(inp);
519 if ((tp->t_flags & TF_TOE) == 0) {
520 rc = EINVAL;
521 log(LOG_ERR, "%s: connection not offloaded (so %p, ep %p)\n",
522 __func__, so, ep);
523 goto done;
524 }
525 toep = TOEPCB(so);
526
527 ep->hwtid = toep->tid;
528 ep->snd_seq = tp->snd_nxt;
529 ep->rcv_seq = tp->rcv_nxt;
530done:
531 INP_WUNLOCK(inp);
532 return (rc);
533
534}
535static int
536get_ifnet_from_raddr(struct sockaddr_storage *raddr, struct ifnet **ifp)
537{
538 int err = 0;
539 struct nhop_object *nh;
540
541 if (raddr->ss_family == AF_INET) {
542 struct sockaddr_in *raddr4 = (struct sockaddr_in *)raddr;
543
544 nh = fib4_lookup(RT_DEFAULT_FIB, raddr4->sin_addr, 0,
545 NHR_NONE, 0);
546 } else {
547 struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *)raddr;
548 struct in6_addr addr6;
549 uint32_t scopeid;
550
551 memset(&addr6, 0, sizeof(addr6));
552 in6_splitscope((struct in6_addr *)&raddr6->sin6_addr,
553 &addr6, &scopeid);
554 nh = fib6_lookup(RT_DEFAULT_FIB, &addr6, scopeid,
555 NHR_NONE, 0);
556 }
557
558 if (nh == NULL)
559 err = EHOSTUNREACH;
560 else
561 *ifp = nh->nh_ifp;
562 CTR2(KTR_IW_CXGBE, "%s: return: %d", __func__, err);
563 return err;
564}
565
566static void
567close_socket(struct socket *so)
568{
569 uninit_iwarp_socket(so);
570 soclose(so);
571}
572
573static void
574process_peer_close(struct c4iw_ep *ep)
575{
576 struct c4iw_qp_attributes attrs = {0};
577 int disconnect = 1;
578 int release = 0;
579
580 CTR4(KTR_IW_CXGBE, "%s:ppcB ep %p so %p state %s", __func__, ep,
581 ep->com.so, states[ep->com.state]);
582
583 switch (ep->com.state) {
584
585 case MPA_REQ_WAIT:
586 CTR2(KTR_IW_CXGBE, "%s:ppc1 %p MPA_REQ_WAIT DEAD",
587 __func__, ep);
588 /* Fallthrough */
589 case MPA_REQ_SENT:
590 CTR2(KTR_IW_CXGBE, "%s:ppc2 %p MPA_REQ_SENT DEAD",
591 __func__, ep);
592 ep->com.state = DEAD;
593 connect_reply_upcall(ep, -ECONNABORTED);
594
595 disconnect = 0;
596 STOP_EP_TIMER(ep);
597 close_socket(ep->com.so);
598 deref_cm_id(&ep->com);
599 release = 1;
600 break;
601
602 case MPA_REQ_RCVD:
603
604 /*
605 * We're gonna mark this puppy DEAD, but keep
606 * the reference on it until the ULP accepts or
607 * rejects the CR.
608 */
609 CTR2(KTR_IW_CXGBE, "%s:ppc3 %p MPA_REQ_RCVD CLOSING",
610 __func__, ep);
611 ep->com.state = CLOSING;
612 break;
613
614 case MPA_REP_SENT:
615 CTR2(KTR_IW_CXGBE, "%s:ppc4 %p MPA_REP_SENT CLOSING",
616 __func__, ep);
617 ep->com.state = CLOSING;
618 break;
619
620 case FPDU_MODE:
621 CTR2(KTR_IW_CXGBE, "%s:ppc5 %p FPDU_MODE CLOSING",
622 __func__, ep);
623 START_EP_TIMER(ep);
624 ep->com.state = CLOSING;
625 attrs.next_state = C4IW_QP_STATE_CLOSING;
626 c4iw_modify_qp(ep->com.dev, ep->com.qp,
627 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
628 peer_close_upcall(ep);
629 break;
630
631 case ABORTING:
632 CTR2(KTR_IW_CXGBE, "%s:ppc6 %p ABORTING (disconn)",
633 __func__, ep);
634 disconnect = 0;
635 break;
636
637 case CLOSING:
638 CTR2(KTR_IW_CXGBE, "%s:ppc7 %p CLOSING MORIBUND",
639 __func__, ep);
640 ep->com.state = MORIBUND;
641 disconnect = 0;
642 break;
643
644 case MORIBUND:
645 CTR2(KTR_IW_CXGBE, "%s:ppc8 %p MORIBUND DEAD", __func__,
646 ep);
647 STOP_EP_TIMER(ep);
648 if (ep->com.cm_id && ep->com.qp) {
649 attrs.next_state = C4IW_QP_STATE_IDLE;
650 c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
651 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
652 }
653 close_socket(ep->com.so);
654 close_complete_upcall(ep, 0);
655 ep->com.state = DEAD;
656 release = 1;
657 disconnect = 0;
658 break;
659
660 case DEAD:
661 CTR2(KTR_IW_CXGBE, "%s:ppc9 %p DEAD (disconn)",
662 __func__, ep);
663 disconnect = 0;
664 break;
665
666 default:
667 panic("%s: ep %p state %d", __func__, ep,
668 ep->com.state);
669 break;
670 }
671
672
673 if (disconnect) {
674
675 CTR2(KTR_IW_CXGBE, "%s:ppca %p", __func__, ep);
676 c4iw_ep_disconnect(ep, 0, M_NOWAIT);
677 }
678 if (release) {
679
680 CTR2(KTR_IW_CXGBE, "%s:ppcb %p", __func__, ep);
681 c4iw_put_ep(&ep->com);
682 }
683 CTR2(KTR_IW_CXGBE, "%s:ppcE %p", __func__, ep);
684 return;
685}
686
687static void
688process_conn_error(struct c4iw_ep *ep)
689{
690 struct c4iw_qp_attributes attrs = {0};
691 int ret;
692 int state;
693
694 state = ep->com.state;
695 CTR5(KTR_IW_CXGBE, "%s:pceB ep %p so %p so->so_error %u state %s",
696 __func__, ep, ep->com.so, ep->com.so->so_error,
697 states[ep->com.state]);
698
699 switch (state) {
700
701 case MPA_REQ_WAIT:
702 STOP_EP_TIMER(ep);
703 c4iw_put_ep(&ep->parent_ep->com);
704 break;
705
706 case MPA_REQ_SENT:
707 STOP_EP_TIMER(ep);
708 connect_reply_upcall(ep, -ECONNRESET);
709 break;
710
711 case MPA_REP_SENT:
712 ep->com.rpl_err = ECONNRESET;
713 CTR1(KTR_IW_CXGBE, "waking up ep %p", ep);
714 break;
715
716 case MPA_REQ_RCVD:
717 break;
718
719 case MORIBUND:
720 case CLOSING:
721 STOP_EP_TIMER(ep);
722 /*FALLTHROUGH*/
723 case FPDU_MODE:
724
725 if (ep->com.cm_id && ep->com.qp) {
726
727 attrs.next_state = C4IW_QP_STATE_ERROR;
728 ret = c4iw_modify_qp(ep->com.qp->rhp,
729 ep->com.qp, C4IW_QP_ATTR_NEXT_STATE,
730 &attrs, 1);
731 if (ret)
732 log(LOG_ERR,
733 "%s - qp <- error failed!\n",
734 __func__);
735 }
736 peer_abort_upcall(ep);
737 break;
738
739 case ABORTING:
740 break;
741
742 case DEAD:
743 CTR2(KTR_IW_CXGBE, "%s so_error %d IN DEAD STATE!!!!",
744 __func__, ep->com.so->so_error);
745 return;
746
747 default:
748 panic("%s: ep %p state %d", __func__, ep, state);
749 break;
750 }
751
752 if (state != ABORTING) {
753 close_socket(ep->com.so);
754 ep->com.state = DEAD;
755 c4iw_put_ep(&ep->com);
756 }
757 CTR2(KTR_IW_CXGBE, "%s:pceE %p", __func__, ep);
758 return;
759}
760
761static void
762process_close_complete(struct c4iw_ep *ep)
763{
764 struct c4iw_qp_attributes attrs = {0};
765 int release = 0;
766
767 CTR4(KTR_IW_CXGBE, "%s:pccB ep %p so %p state %s", __func__, ep,
768 ep->com.so, states[ep->com.state]);
769
770 /* The cm_id may be null if we failed to connect */
771 set_bit(CLOSE_CON_RPL, &ep->com.history);
772
773 switch (ep->com.state) {
774
775 case CLOSING:
776 CTR2(KTR_IW_CXGBE, "%s:pcc1 %p CLOSING MORIBUND",
777 __func__, ep);
778 ep->com.state = MORIBUND;
779 break;
780
781 case MORIBUND:
782 CTR2(KTR_IW_CXGBE, "%s:pcc1 %p MORIBUND DEAD", __func__,
783 ep);
784 STOP_EP_TIMER(ep);
785
786 if ((ep->com.cm_id) && (ep->com.qp)) {
787
788 CTR2(KTR_IW_CXGBE, "%s:pcc2 %p QP_STATE_IDLE",
789 __func__, ep);
790 attrs.next_state = C4IW_QP_STATE_IDLE;
791 c4iw_modify_qp(ep->com.dev,
792 ep->com.qp,
793 C4IW_QP_ATTR_NEXT_STATE,
794 &attrs, 1);
795 }
796
797 close_socket(ep->com.so);
798 close_complete_upcall(ep, 0);
799 ep->com.state = DEAD;
800 release = 1;
801 break;
802
803 case ABORTING:
804 CTR2(KTR_IW_CXGBE, "%s:pcc5 %p ABORTING", __func__, ep);
805 break;
806
807 case DEAD:
808 CTR2(KTR_IW_CXGBE, "%s:pcc6 %p DEAD", __func__, ep);
809 break;
810 default:
811 CTR2(KTR_IW_CXGBE, "%s:pcc7 %p unknown ep state",
812 __func__, ep);
813 panic("%s:pcc6 %p unknown ep state", __func__, ep);
814 break;
815 }
816
817 if (release) {
818
819 CTR2(KTR_IW_CXGBE, "%s:pcc8 %p", __func__, ep);
820 release_ep_resources(ep);
821 }
822 CTR2(KTR_IW_CXGBE, "%s:pccE %p", __func__, ep);
823 return;
824}
825
826static void
827setiwsockopt(struct socket *so)
828{
829 int rc;
830 struct sockopt sopt;
831 int on = 1;
832
833 sopt.sopt_dir = SOPT_SET;
834 sopt.sopt_level = IPPROTO_TCP;
835 sopt.sopt_name = TCP_NODELAY;
836 sopt.sopt_val = (caddr_t)&on;
837 sopt.sopt_valsize = sizeof on;
838 sopt.sopt_td = NULL;
839 rc = -sosetopt(so, &sopt);
840 if (rc) {
841 log(LOG_ERR, "%s: can't set TCP_NODELAY on so %p (%d)\n",
842 __func__, so, rc);
843 }
844}
845
846static void
847init_iwarp_socket(struct socket *so, void *arg)
848{
849 if (SOLISTENING(so)) {
850 SOLISTEN_LOCK(so);
851 solisten_upcall_set(so, c4iw_so_upcall, arg);
852 so->so_state |= SS_NBIO;
853 SOLISTEN_UNLOCK(so);
854 } else {
855 SOCKBUF_LOCK(&so->so_rcv);
856 soupcall_set(so, SO_RCV, c4iw_so_upcall, arg);
857 so->so_state |= SS_NBIO;
858 SOCKBUF_UNLOCK(&so->so_rcv);
859 }
860}
861
862static void
863uninit_iwarp_socket(struct socket *so)
864{
865 if (SOLISTENING(so)) {
866 SOLISTEN_LOCK(so);
867 solisten_upcall_set(so, NULL, NULL);
868 SOLISTEN_UNLOCK(so);
869 } else {
870 SOCKBUF_LOCK(&so->so_rcv);
871 soupcall_clear(so, SO_RCV);
872 SOCKBUF_UNLOCK(&so->so_rcv);
873 }
874}
875
876static void
877process_data(struct c4iw_ep *ep)
878{
879 int ret = 0;
880 int disconnect = 0;
881 struct c4iw_qp_attributes attrs = {0};
882
883 CTR5(KTR_IW_CXGBE, "%s: so %p, ep %p, state %s, sbused %d", __func__,
884 ep->com.so, ep, states[ep->com.state], sbused(&ep->com.so->so_rcv));
885
886 switch (ep->com.state) {
887 case MPA_REQ_SENT:
888 disconnect = process_mpa_reply(ep);
889 break;
890 case MPA_REQ_WAIT:
891 disconnect = process_mpa_request(ep);
892 if (disconnect)
893 /* Refered in process_newconn() */
894 c4iw_put_ep(&ep->parent_ep->com);
895 break;
896 case FPDU_MODE:
897 MPASS(ep->com.qp != NULL);
898 attrs.next_state = C4IW_QP_STATE_TERMINATE;
899 ret = c4iw_modify_qp(ep->com.dev, ep->com.qp,
900 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
901 if (ret != -EINPROGRESS)
902 disconnect = 1;
903 break;
904 default:
905 log(LOG_ERR, "%s: Unexpected streaming data. ep %p, "
906 "state %d, so %p, so_state 0x%x, sbused %u\n",
907 __func__, ep, ep->com.state, ep->com.so,
908 ep->com.so->so_state, sbused(&ep->com.so->so_rcv));
909 break;
910 }
911 if (disconnect)
912 c4iw_ep_disconnect(ep, disconnect == 2, GFP_KERNEL);
913
914}
915
916static void
917process_connected(struct c4iw_ep *ep)
918{
919 struct socket *so = ep->com.so;
920
921 if ((so->so_state & SS_ISCONNECTED) && !so->so_error) {
922 if (send_mpa_req(ep))
923 goto err;
924 } else {
925 connect_reply_upcall(ep, -so->so_error);
926 goto err;
927 }
928 return;
929err:
930 close_socket(so);
931 ep->com.state = DEAD;
932 c4iw_put_ep(&ep->com);
933 return;
934}
935
936static inline int c4iw_zero_addr(struct sockaddr *addr)
937{
938 struct in6_addr *ip6;
939
940 if (addr->sa_family == AF_INET)
941 return IN_ZERONET(
942 ntohl(((struct sockaddr_in *)addr)->sin_addr.s_addr));
943 else {
944 ip6 = &((struct sockaddr_in6 *) addr)->sin6_addr;
945 return (ip6->s6_addr32[0] | ip6->s6_addr32[1] |
946 ip6->s6_addr32[2] | ip6->s6_addr32[3]) == 0;
947 }
948}
949
950static inline int c4iw_loopback_addr(struct sockaddr *addr)
951{
952 if (addr->sa_family == AF_INET)
953 return IN_LOOPBACK(
954 ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr));
955 else
956 return IN6_IS_ADDR_LOOPBACK(
957 &((struct sockaddr_in6 *) addr)->sin6_addr);
958}
959
960static inline int c4iw_any_addr(struct sockaddr *addr)
961{
962 return c4iw_zero_addr(addr) || c4iw_loopback_addr(addr);
963}
964
965static void
966process_newconn(struct c4iw_listen_ep *master_lep, struct socket *new_so)
967{
968 struct c4iw_listen_ep *real_lep = NULL;
969 struct c4iw_ep *new_ep = NULL;
970 struct sockaddr_in *remote = NULL;
971 int ret = 0;
972
973 MPASS(new_so != NULL);
974
975 if (c4iw_any_addr((struct sockaddr *)&master_lep->com.local_addr)) {
976 /* Here we need to find the 'real_lep' that belongs to the
977 * incomming socket's network interface, such that the newly
978 * created 'ep' can be attached to the real 'lep'.
979 */
980 real_lep = find_real_listen_ep(master_lep, new_so);
981 if (real_lep == NULL) {
982 CTR2(KTR_IW_CXGBE, "%s: Could not find the real listen "
983 "ep for sock: %p", __func__, new_so);
984 log(LOG_ERR,"%s: Could not find the real listen ep for "
985 "sock: %p\n", __func__, new_so);
986 /* FIXME: properly free the 'new_so' in failure case.
987 * Use of soabort() and soclose() are not legal
988 * here(before soaccept()).
989 */
990 return;
991 }
992 } else /* for Non-Wildcard address, master_lep is always the real_lep */
993 real_lep = master_lep;
994
995 new_ep = alloc_ep(sizeof(*new_ep), GFP_KERNEL);
996
997 CTR6(KTR_IW_CXGBE, "%s: master_lep %p, real_lep: %p, new ep %p, "
998 "listening so %p, new so %p", __func__, master_lep, real_lep,
999 new_ep, master_lep->com.so, new_so);
1000
1001 new_ep->com.dev = real_lep->com.dev;
1002 new_ep->com.so = new_so;
1003 new_ep->com.cm_id = NULL;
1004 new_ep->com.thread = real_lep->com.thread;
1005 new_ep->parent_ep = real_lep;
1006
1007 GET_LOCAL_ADDR(&new_ep->com.local_addr, new_so);
1008 GET_REMOTE_ADDR(&new_ep->com.remote_addr, new_so);
1009 c4iw_get_ep(&real_lep->com);
1010 init_timer(&new_ep->timer);
1011 new_ep->com.state = MPA_REQ_WAIT;
1012
1013 setiwsockopt(new_so);
1014 ret = soaccept(new_so, (struct sockaddr **)&remote);
1015 if (ret != 0) {
1016 CTR4(KTR_IW_CXGBE,
1017 "%s:listen sock:%p, new sock:%p, ret:%d",
1018 __func__, master_lep->com.so, new_so, ret);
1019 if (remote != NULL)
1020 free(remote, M_SONAME);
1021 soclose(new_so);
1022 c4iw_put_ep(&new_ep->com);
1023 c4iw_put_ep(&real_lep->com);
1024 return;
1025 }
1026 free(remote, M_SONAME);
1027
1028 START_EP_TIMER(new_ep);
1029
1030 /* MPA request might have been queued up on the socket already, so we
1031 * initialize the socket/upcall_handler under lock to prevent processing
1032 * MPA request on another thread(via process_req()) simultaniously.
1033 */
1034 c4iw_get_ep(&new_ep->com); /* Dereferenced at the end below, this is to
1035 avoid freeing of ep before ep unlock. */
1036 mutex_lock(&new_ep->com.mutex);
1037 init_iwarp_socket(new_so, &new_ep->com);
1038
1039 ret = process_mpa_request(new_ep);
1040 if (ret) {
1041 /* ABORT */
1042 c4iw_ep_disconnect(new_ep, 1, GFP_KERNEL);
1043 c4iw_put_ep(&real_lep->com);
1044 }
1045 mutex_unlock(&new_ep->com.mutex);
1046 c4iw_put_ep(&new_ep->com);
1047 return;
1048}
1049
1050static int
1051add_ep_to_req_list(struct c4iw_ep *ep, int new_ep_event)
1052{
1053 unsigned long flag;
1054
1055 spin_lock_irqsave(&req_lock, flag);
1056 if (ep && ep->com.so) {
1057 ep->com.ep_events |= new_ep_event;
1058 if (!ep->com.entry.tqe_prev) {
1059 c4iw_get_ep(&ep->com);
1060 TAILQ_INSERT_TAIL(&req_list, &ep->com, entry);
1061 queue_work(c4iw_taskq, &c4iw_task);
1062 }
1063 }
1064 spin_unlock_irqrestore(&req_lock, flag);
1065
1066 return (0);
1067}
1068
1069static int
1070c4iw_so_upcall(struct socket *so, void *arg, int waitflag)
1071{
1072 struct c4iw_ep *ep = arg;
1073
1074 CTR6(KTR_IW_CXGBE,
1075 "%s: so %p, so_state 0x%x, ep %p, ep_state %s, tqe_prev %p",
1076 __func__, so, so->so_state, ep, states[ep->com.state],
1077 ep->com.entry.tqe_prev);
1078
1079 MPASS(ep->com.so == so);
1080 /*
1081 * Wake up any threads waiting in rdma_init()/rdma_fini(),
1082 * with locks held.
1083 */
1084 if (so->so_error || (ep->com.dev->rdev.flags & T4_FATAL_ERROR))
1085 c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET);
1086 add_ep_to_req_list(ep, C4IW_EVENT_SOCKET);
1087
1088 return (SU_OK);
1089}
1090
1091
1092static int
1093terminate(struct sge_iq *iq, const struct rss_header *rss, struct mbuf *m)
1094{
1095 struct adapter *sc = iq->adapter;
1096 const struct cpl_rdma_terminate *cpl = mtod(m, const void *);
1097 unsigned int tid = GET_TID(cpl);
1098 struct toepcb *toep = lookup_tid(sc, tid);
1099 struct socket *so;
1100 struct c4iw_ep *ep;
1101
1102 INP_WLOCK(toep->inp);
1103 so = inp_inpcbtosocket(toep->inp);
1104 ep = so->so_rcv.sb_upcallarg;
1105 INP_WUNLOCK(toep->inp);
1106
1107 CTR3(KTR_IW_CXGBE, "%s: so %p, ep %p", __func__, so, ep);
1108 add_ep_to_req_list(ep, C4IW_EVENT_TERM);
1109
1110 return 0;
1111}
1112
1113static void
1114process_socket_event(struct c4iw_ep *ep)
1115{
1116 int state = ep->com.state;
1117 struct socket *so = ep->com.so;
1118
1119 if (ep->com.state == DEAD) {
1120 CTR3(KTR_IW_CXGBE, "%s: Pending socket event discarded "
1121 "ep %p ep_state %s", __func__, ep, states[state]);
1122 return;
1123 }
1124
1125 CTR6(KTR_IW_CXGBE, "process_socket_event: so %p, so_state 0x%x, "
1126 "so_err %d, sb_state 0x%x, ep %p, ep_state %s", so, so->so_state,
1127 so->so_error, so->so_rcv.sb_state, ep, states[state]);
1128
1129 if (state == CONNECTING) {
1130 process_connected(ep);
1131 return;
1132 }
1133
1134 if (state == LISTEN) {
1135 struct c4iw_listen_ep *lep = (struct c4iw_listen_ep *)ep;
1136 struct socket *listen_so = so, *new_so = NULL;
1137 int error = 0;
1138
1139 SOLISTEN_LOCK(listen_so);
1140 do {
1141 error = solisten_dequeue(listen_so, &new_so,
1142 SOCK_NONBLOCK);
1143 if (error) {
1144 CTR4(KTR_IW_CXGBE, "%s: lep %p listen_so %p "
1145 "error %d", __func__, lep, listen_so,
1146 error);
1147 return;
1148 }
1149 process_newconn(lep, new_so);
1150
1151 /* solisten_dequeue() unlocks while return, so aquire
1152 * lock again for sol_qlen and also for next iteration.
1153 */
1154 SOLISTEN_LOCK(listen_so);
1155 } while (listen_so->sol_qlen);
1156 SOLISTEN_UNLOCK(listen_so);
1157
1158 return;
1159 }
1160
1161 /* connection error */
1162 if (so->so_error) {
1163 process_conn_error(ep);
1164 return;
1165 }
1166
1167 /* peer close */
1168 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && state <= CLOSING) {
1169 process_peer_close(ep);
1170 /*
1171 * check whether socket disconnect event is pending before
1172 * returning. Fallthrough if yes.
1173 */
1174 if (!(so->so_state & SS_ISDISCONNECTED))
1175 return;
1176 }
1177
1178 /* close complete */
1179 if (so->so_state & SS_ISDISCONNECTED) {
1180 process_close_complete(ep);
1181 return;
1182 }
1183
1184 /* rx data */
1185 if (sbused(&ep->com.so->so_rcv)) {
1186 process_data(ep);
1187 return;
1188 }
1189
1190 /* Socket events for 'MPA Request Received' and 'Close Complete'
1191 * were already processed earlier in their previous events handlers.
1192 * Hence, these socket events are skipped.
1193 * And any other socket events must have handled above.
1194 */
1195 MPASS((ep->com.state == MPA_REQ_RCVD) || (ep->com.state == MORIBUND));
1196
1197 if ((ep->com.state != MPA_REQ_RCVD) && (ep->com.state != MORIBUND))
1198 log(LOG_ERR, "%s: Unprocessed socket event so %p, "
1199 "so_state 0x%x, so_err %d, sb_state 0x%x, ep %p, ep_state %s\n",
1200 __func__, so, so->so_state, so->so_error, so->so_rcv.sb_state,
1201 ep, states[state]);
1202
1203}
1204
1205SYSCTL_NODE(_hw, OID_AUTO, iw_cxgbe, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
1206 "iw_cxgbe driver parameters");
1207
1208static int dack_mode = 0;
1209SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, dack_mode, CTLFLAG_RWTUN, &dack_mode, 0,
1210 "Delayed ack mode (default = 0)");
1211
1212int c4iw_max_read_depth = 8;
1213SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_max_read_depth, CTLFLAG_RWTUN, &c4iw_max_read_depth, 0,
1214 "Per-connection max ORD/IRD (default = 8)");
1215
1216static int enable_tcp_timestamps;
1217SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_timestamps, CTLFLAG_RWTUN, &enable_tcp_timestamps, 0,
1218 "Enable tcp timestamps (default = 0)");
1219
1220static int enable_tcp_sack;
1221SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_sack, CTLFLAG_RWTUN, &enable_tcp_sack, 0,
1222 "Enable tcp SACK (default = 0)");
1223
1224static int enable_tcp_window_scaling = 1;
1225SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, enable_tcp_window_scaling, CTLFLAG_RWTUN, &enable_tcp_window_scaling, 0,
1226 "Enable tcp window scaling (default = 1)");
1227
1228int c4iw_debug = 0;
1229SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, c4iw_debug, CTLFLAG_RWTUN, &c4iw_debug, 0,
1230 "Enable debug logging (default = 0)");
1231
1232static int peer2peer = 1;
1233SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, peer2peer, CTLFLAG_RWTUN, &peer2peer, 0,
1234 "Support peer2peer ULPs (default = 1)");
1235
1236static int p2p_type = FW_RI_INIT_P2PTYPE_READ_REQ;
1237SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, p2p_type, CTLFLAG_RWTUN, &p2p_type, 0,
1238 "RDMAP opcode to use for the RTR message: 1 = RDMA_READ 0 = RDMA_WRITE (default 1)");
1239
1240static int ep_timeout_secs = 60;
1241SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, ep_timeout_secs, CTLFLAG_RWTUN, &ep_timeout_secs, 0,
1242 "CM Endpoint operation timeout in seconds (default = 60)");
1243
1244static int mpa_rev = 1;
1245SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, mpa_rev, CTLFLAG_RWTUN, &mpa_rev, 0,
1246 "MPA Revision, 0 supports amso1100, 1 is RFC5044 spec compliant, 2 is IETF MPA Peer Connect Draft compliant (default = 1)");
1247
1248static int markers_enabled;
1249SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, markers_enabled, CTLFLAG_RWTUN, &markers_enabled, 0,
1250 "Enable MPA MARKERS (default(0) = disabled)");
1251
1252static int crc_enabled = 1;
1253SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, crc_enabled, CTLFLAG_RWTUN, &crc_enabled, 0,
1254 "Enable MPA CRC (default(1) = enabled)");
1255
1256static int rcv_win = 256 * 1024;
1257SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, rcv_win, CTLFLAG_RWTUN, &rcv_win, 0,
1258 "TCP receive window in bytes (default = 256KB)");
1259
1260static int snd_win = 128 * 1024;
1261SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, snd_win, CTLFLAG_RWTUN, &snd_win, 0,
1262 "TCP send window in bytes (default = 128KB)");
1263
1264int use_dsgl = 1;
1265SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, use_dsgl, CTLFLAG_RWTUN, &use_dsgl, 0,
1266 "Use DSGL for PBL/FastReg (default=1)");
1267
1268int inline_threshold = 128;
1269SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, inline_threshold, CTLFLAG_RWTUN, &inline_threshold, 0,
1270 "inline vs dsgl threshold (default=128)");
1271
1272static int reuseaddr = 0;
1273SYSCTL_INT(_hw_iw_cxgbe, OID_AUTO, reuseaddr, CTLFLAG_RWTUN, &reuseaddr, 0,
1274 "Enable SO_REUSEADDR & SO_REUSEPORT socket options on all iWARP client connections(default = 0)");
1275
1276static void
1277start_ep_timer(struct c4iw_ep *ep)
1278{
1279
1280 if (timer_pending(&ep->timer)) {
1281 CTR2(KTR_IW_CXGBE, "%s: ep %p, already started", __func__, ep);
1282 printk(KERN_ERR "%s timer already started! ep %p\n", __func__,
1283 ep);
1284 return;
1285 }
1286 clear_bit(TIMEOUT, &ep->com.flags);
1287 c4iw_get_ep(&ep->com);
1288 ep->timer.expires = jiffies + ep_timeout_secs * HZ;
1289 ep->timer.data = (unsigned long)ep;
1290 ep->timer.function = ep_timeout;
1291 add_timer(&ep->timer);
1292}
1293
1294static int
1295stop_ep_timer(struct c4iw_ep *ep)
1296{
1297
1298 del_timer_sync(&ep->timer);
1299 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) {
1300 c4iw_put_ep(&ep->com);
1301 return 0;
1302 }
1303 return 1;
1304}
1305
1306static void *
1307alloc_ep(int size, gfp_t gfp)
1308{
1309 struct c4iw_ep_common *epc;
1310
1311 epc = kzalloc(size, gfp);
1312 if (epc == NULL)
1313 return (NULL);
1314
1315 kref_init(&epc->kref);
1316 mutex_init(&epc->mutex);
1317 c4iw_init_wr_wait(&epc->wr_wait);
1318
1319 return (epc);
1320}
1321
1322void _c4iw_free_ep(struct kref *kref)
1323{
1324 struct c4iw_ep *ep;
1325#if defined(KTR) || defined(INVARIANTS)
1326 struct c4iw_ep_common *epc;
1327#endif
1328
1329 ep = container_of(kref, struct c4iw_ep, com.kref);
1330#if defined(KTR) || defined(INVARIANTS)
1331 epc = &ep->com;
1332#endif
1333 KASSERT(!epc->entry.tqe_prev, ("%s epc %p still on req list",
1334 __func__, epc));
1335 if (test_bit(QP_REFERENCED, &ep->com.flags))
1336 deref_qp(ep);
1337 CTR4(KTR_IW_CXGBE, "%s: ep %p, history 0x%lx, flags 0x%lx",
1338 __func__, ep, epc->history, epc->flags);
1339 kfree(ep);
1340}
1341
1342static void release_ep_resources(struct c4iw_ep *ep)
1343{
1344 CTR2(KTR_IW_CXGBE, "%s:rerB %p", __func__, ep);
1345 set_bit(RELEASE_RESOURCES, &ep->com.flags);
1346 c4iw_put_ep(&ep->com);
1347 CTR2(KTR_IW_CXGBE, "%s:rerE %p", __func__, ep);
1348}
1349
1350static int
1351send_mpa_req(struct c4iw_ep *ep)
1352{
1353 int mpalen;
1354 struct mpa_message *mpa;
1355 struct mpa_v2_conn_params mpa_v2_params;
1356 struct mbuf *m;
1357 char mpa_rev_to_use = mpa_rev;
1358 int err = 0;
1359
1360 if (ep->retry_with_mpa_v1)
1361 mpa_rev_to_use = 1;
1362 mpalen = sizeof(*mpa) + ep->plen;
1363 if (mpa_rev_to_use == 2)
1364 mpalen += sizeof(struct mpa_v2_conn_params);
1365
1366 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT);
1367 if (mpa == NULL) {
1368 err = -ENOMEM;
1369 CTR3(KTR_IW_CXGBE, "%s:smr1 ep: %p , error: %d",
1370 __func__, ep, err);
1371 goto err;
1372 }
1373
1374 memset(mpa, 0, mpalen);
1375 memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key));
1376 mpa->flags = (crc_enabled ? MPA_CRC : 0) |
1377 (markers_enabled ? MPA_MARKERS : 0) |
1378 (mpa_rev_to_use == 2 ? MPA_ENHANCED_RDMA_CONN : 0);
1379 mpa->private_data_size = htons(ep->plen);
1380 mpa->revision = mpa_rev_to_use;
1381
1382 if (mpa_rev_to_use == 1) {
1383 ep->tried_with_mpa_v1 = 1;
1384 ep->retry_with_mpa_v1 = 0;
1385 }
1386
1387 if (mpa_rev_to_use == 2) {
1388 mpa->private_data_size = htons(ntohs(mpa->private_data_size) +
1389 sizeof(struct mpa_v2_conn_params));
1390 mpa_v2_params.ird = htons((u16)ep->ird);
1391 mpa_v2_params.ord = htons((u16)ep->ord);
1392
1393 if (peer2peer) {
1394 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL);
1395
1396 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) {
1397 mpa_v2_params.ord |=
1398 htons(MPA_V2_RDMA_WRITE_RTR);
1399 } else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) {
1400 mpa_v2_params.ord |=
1401 htons(MPA_V2_RDMA_READ_RTR);
1402 }
1403 }
1404 memcpy(mpa->private_data, &mpa_v2_params,
1405 sizeof(struct mpa_v2_conn_params));
1406
1407 if (ep->plen) {
1408
1409 memcpy(mpa->private_data +
1410 sizeof(struct mpa_v2_conn_params),
1411 ep->mpa_pkt + sizeof(*mpa), ep->plen);
1412 }
1413 } else {
1414
1415 if (ep->plen)
1416 memcpy(mpa->private_data,
1417 ep->mpa_pkt + sizeof(*mpa), ep->plen);
1418 CTR2(KTR_IW_CXGBE, "%s:smr7 %p", __func__, ep);
1419 }
1420
1421 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA);
1422 if (m == NULL) {
1423 err = -ENOMEM;
1424 CTR3(KTR_IW_CXGBE, "%s:smr2 ep: %p , error: %d",
1425 __func__, ep, err);
1426 free(mpa, M_CXGBE);
1427 goto err;
1428 }
1429 m_copyback(m, 0, mpalen, (void *)mpa);
1430 free(mpa, M_CXGBE);
1431
1432 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT,
1433 ep->com.thread);
1434 if (err) {
1435 CTR3(KTR_IW_CXGBE, "%s:smr3 ep: %p , error: %d",
1436 __func__, ep, err);
1437 goto err;
1438 }
1439
1440 START_EP_TIMER(ep);
1441 ep->com.state = MPA_REQ_SENT;
1442 ep->mpa_attr.initiator = 1;
1443 CTR3(KTR_IW_CXGBE, "%s:smrE %p, error: %d", __func__, ep, err);
1444 return 0;
1445err:
1446 connect_reply_upcall(ep, err);
1447 CTR3(KTR_IW_CXGBE, "%s:smrE %p, error: %d", __func__, ep, err);
1448 return err;
1449}
1450
1451static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen)
1452{
1453 int mpalen ;
1454 struct mpa_message *mpa;
1455 struct mpa_v2_conn_params mpa_v2_params;
1456 struct mbuf *m;
1457 int err;
1458
1459 CTR4(KTR_IW_CXGBE, "%s:smrejB %p %u %d", __func__, ep, ep->hwtid,
1460 ep->plen);
1461
1462 mpalen = sizeof(*mpa) + plen;
1463
1464 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
1465
1466 mpalen += sizeof(struct mpa_v2_conn_params);
1467 CTR4(KTR_IW_CXGBE, "%s:smrej1 %p %u %d", __func__, ep,
1468 ep->mpa_attr.version, mpalen);
1469 }
1470
1471 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT);
1472 if (mpa == NULL)
1473 return (-ENOMEM);
1474
1475 memset(mpa, 0, mpalen);
1476 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key));
1477 mpa->flags = MPA_REJECT;
1478 mpa->revision = mpa_rev;
1479 mpa->private_data_size = htons(plen);
1480
1481 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
1482
1483 mpa->flags |= MPA_ENHANCED_RDMA_CONN;
1484 mpa->private_data_size = htons(ntohs(mpa->private_data_size) +
1485 sizeof(struct mpa_v2_conn_params));
1486 mpa_v2_params.ird = htons(((u16)ep->ird) |
1487 (peer2peer ? MPA_V2_PEER2PEER_MODEL :
1488 0));
1489 mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ?
1490 (p2p_type ==
1491 FW_RI_INIT_P2PTYPE_RDMA_WRITE ?
1492 MPA_V2_RDMA_WRITE_RTR : p2p_type ==
1493 FW_RI_INIT_P2PTYPE_READ_REQ ?
1494 MPA_V2_RDMA_READ_RTR : 0) : 0));
1495 memcpy(mpa->private_data, &mpa_v2_params,
1496 sizeof(struct mpa_v2_conn_params));
1497
1498 if (ep->plen)
1499 memcpy(mpa->private_data +
1500 sizeof(struct mpa_v2_conn_params), pdata, plen);
1501 CTR5(KTR_IW_CXGBE, "%s:smrej3 %p %d %d %d", __func__, ep,
1502 mpa_v2_params.ird, mpa_v2_params.ord, ep->plen);
1503 } else
1504 if (plen)
1505 memcpy(mpa->private_data, pdata, plen);
1506
1507 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA);
1508 if (m == NULL) {
1509 free(mpa, M_CXGBE);
1510 return (-ENOMEM);
1511 }
1512 m_copyback(m, 0, mpalen, (void *)mpa);
1513 free(mpa, M_CXGBE);
1514
1515 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT, ep->com.thread);
1516 if (!err)
1517 ep->snd_seq += mpalen;
1518 CTR4(KTR_IW_CXGBE, "%s:smrejE %p %u %d", __func__, ep, ep->hwtid, err);
1519 return err;
1520}
1521
1522static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen)
1523{
1524 int mpalen;
1525 struct mpa_message *mpa;
1526 struct mbuf *m;
1527 struct mpa_v2_conn_params mpa_v2_params;
1528 int err;
1529
1530 CTR2(KTR_IW_CXGBE, "%s:smrepB %p", __func__, ep);
1531
1532 mpalen = sizeof(*mpa) + plen;
1533
1534 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
1535
1536 CTR3(KTR_IW_CXGBE, "%s:smrep1 %p %d", __func__, ep,
1537 ep->mpa_attr.version);
1538 mpalen += sizeof(struct mpa_v2_conn_params);
1539 }
1540
1541 mpa = malloc(mpalen, M_CXGBE, M_NOWAIT);
1542 if (mpa == NULL)
1543 return (-ENOMEM);
1544
1545 memset(mpa, 0, sizeof(*mpa));
1546 memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key));
1547 mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) |
1548 (markers_enabled ? MPA_MARKERS : 0);
1549 mpa->revision = ep->mpa_attr.version;
1550 mpa->private_data_size = htons(plen);
1551
1552 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
1553
1554 mpa->flags |= MPA_ENHANCED_RDMA_CONN;
1555 mpa->private_data_size +=
1556 htons(sizeof(struct mpa_v2_conn_params));
1557 mpa_v2_params.ird = htons((u16)ep->ird);
1558 mpa_v2_params.ord = htons((u16)ep->ord);
1559 CTR5(KTR_IW_CXGBE, "%s:smrep3 %p %d %d %d", __func__, ep,
1560 ep->mpa_attr.version, mpa_v2_params.ird, mpa_v2_params.ord);
1561
1562 if (peer2peer && (ep->mpa_attr.p2p_type !=
1563 FW_RI_INIT_P2PTYPE_DISABLED)) {
1564
1565 mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL);
1566
1567 if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) {
1568
1569 mpa_v2_params.ord |=
1570 htons(MPA_V2_RDMA_WRITE_RTR);
1571 CTR5(KTR_IW_CXGBE, "%s:smrep4 %p %d %d %d",
1572 __func__, ep, p2p_type, mpa_v2_params.ird,
1573 mpa_v2_params.ord);
1574 }
1575 else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) {
1576
1577 mpa_v2_params.ord |=
1578 htons(MPA_V2_RDMA_READ_RTR);
1579 CTR5(KTR_IW_CXGBE, "%s:smrep5 %p %d %d %d",
1580 __func__, ep, p2p_type, mpa_v2_params.ird,
1581 mpa_v2_params.ord);
1582 }
1583 }
1584
1585 memcpy(mpa->private_data, &mpa_v2_params,
1586 sizeof(struct mpa_v2_conn_params));
1587
1588 if (ep->plen)
1589 memcpy(mpa->private_data +
1590 sizeof(struct mpa_v2_conn_params), pdata, plen);
1591 } else
1592 if (plen)
1593 memcpy(mpa->private_data, pdata, plen);
1594
1595 m = m_getm(NULL, mpalen, M_NOWAIT, MT_DATA);
1596 if (m == NULL) {
1597 free(mpa, M_CXGBE);
1598 return (-ENOMEM);
1599 }
1600 m_copyback(m, 0, mpalen, (void *)mpa);
1601 free(mpa, M_CXGBE);
1602
1603
1604 ep->com.state = MPA_REP_SENT;
1605 ep->snd_seq += mpalen;
1606 err = -sosend(ep->com.so, NULL, NULL, m, NULL, MSG_DONTWAIT,
1607 ep->com.thread);
1608 CTR3(KTR_IW_CXGBE, "%s:smrepE %p %d", __func__, ep, err);
1609 return err;
1610}
1611
1612
1613
1614static void close_complete_upcall(struct c4iw_ep *ep, int status)
1615{
1616 struct iw_cm_event event;
1617
1618 CTR2(KTR_IW_CXGBE, "%s:ccuB %p", __func__, ep);
1619 memset(&event, 0, sizeof(event));
1620 event.event = IW_CM_EVENT_CLOSE;
1621 event.status = status;
1622
1623 if (ep->com.cm_id) {
1624
1625 CTR2(KTR_IW_CXGBE, "%s:ccu1 %1", __func__, ep);
1626 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1627 deref_cm_id(&ep->com);
1628 set_bit(CLOSE_UPCALL, &ep->com.history);
1629 }
1630 CTR2(KTR_IW_CXGBE, "%s:ccuE %p", __func__, ep);
1631}
1632
1633static int
1634send_abort(struct c4iw_ep *ep)
1635{
1636 struct socket *so = ep->com.so;
1637 struct sockopt sopt;
1638 int rc;
1639 struct linger l;
1640
1641 CTR5(KTR_IW_CXGBE, "%s ep %p so %p state %s tid %d", __func__, ep, so,
1642 states[ep->com.state], ep->hwtid);
1643
1644 l.l_onoff = 1;
1645 l.l_linger = 0;
1646
1647 /* linger_time of 0 forces RST to be sent */
1648 sopt.sopt_dir = SOPT_SET;
1649 sopt.sopt_level = SOL_SOCKET;
1650 sopt.sopt_name = SO_LINGER;
1651 sopt.sopt_val = (caddr_t)&l;
1652 sopt.sopt_valsize = sizeof l;
1653 sopt.sopt_td = NULL;
1654 rc = -sosetopt(so, &sopt);
1655 if (rc != 0) {
1656 log(LOG_ERR, "%s: sosetopt(%p, linger = 0) failed with %d.\n",
1657 __func__, so, rc);
1658 }
1659
1660 uninit_iwarp_socket(so);
1661 soclose(so);
1662 set_bit(ABORT_CONN, &ep->com.history);
1663
1664 /*
1665 * TBD: iw_cxgbe driver should receive ABORT reply for every ABORT
1666 * request it has sent. But the current TOE driver is not propagating
1667 * this ABORT reply event (via do_abort_rpl) to iw_cxgbe. So as a work-
1668 * around de-refererece 'ep' here instead of doing it in abort_rpl()
1669 * handler(not yet implemented) of iw_cxgbe driver.
1670 */
1671 release_ep_resources(ep);
1672 ep->com.state = DEAD;
1673
1674 return (0);
1675}
1676
1677static void peer_close_upcall(struct c4iw_ep *ep)
1678{
1679 struct iw_cm_event event;
1680
1681 CTR2(KTR_IW_CXGBE, "%s:pcuB %p", __func__, ep);
1682 memset(&event, 0, sizeof(event));
1683 event.event = IW_CM_EVENT_DISCONNECT;
1684
1685 if (ep->com.cm_id) {
1686
1687 CTR2(KTR_IW_CXGBE, "%s:pcu1 %p", __func__, ep);
1688 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1689 set_bit(DISCONN_UPCALL, &ep->com.history);
1690 }
1691 CTR2(KTR_IW_CXGBE, "%s:pcuE %p", __func__, ep);
1692}
1693
1694static void peer_abort_upcall(struct c4iw_ep *ep)
1695{
1696 struct iw_cm_event event;
1697
1698 CTR2(KTR_IW_CXGBE, "%s:pauB %p", __func__, ep);
1699 memset(&event, 0, sizeof(event));
1700 event.event = IW_CM_EVENT_CLOSE;
1701 event.status = -ECONNRESET;
1702
1703 if (ep->com.cm_id) {
1704
1705 CTR2(KTR_IW_CXGBE, "%s:pau1 %p", __func__, ep);
1706 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1707 deref_cm_id(&ep->com);
1708 set_bit(ABORT_UPCALL, &ep->com.history);
1709 }
1710 CTR2(KTR_IW_CXGBE, "%s:pauE %p", __func__, ep);
1711}
1712
1713static void connect_reply_upcall(struct c4iw_ep *ep, int status)
1714{
1715 struct iw_cm_event event;
1716
1717 CTR3(KTR_IW_CXGBE, "%s:cruB %p, status: %d", __func__, ep, status);
1718 memset(&event, 0, sizeof(event));
1719 event.event = IW_CM_EVENT_CONNECT_REPLY;
1720 event.status = ((status == -ECONNABORTED) || (status == -EPIPE)) ?
1721 -ECONNRESET : status;
1722 event.local_addr = ep->com.local_addr;
1723 event.remote_addr = ep->com.remote_addr;
1724
1725 if ((status == 0) || (status == -ECONNREFUSED)) {
1726
1727 if (!ep->tried_with_mpa_v1) {
1728
1729 CTR2(KTR_IW_CXGBE, "%s:cru1 %p", __func__, ep);
1730 /* this means MPA_v2 is used */
1731 event.ord = ep->ird;
1732 event.ird = ep->ord;
1733 event.private_data_len = ep->plen -
1734 sizeof(struct mpa_v2_conn_params);
1735 event.private_data = ep->mpa_pkt +
1736 sizeof(struct mpa_message) +
1737 sizeof(struct mpa_v2_conn_params);
1738 } else {
1739
1740 CTR2(KTR_IW_CXGBE, "%s:cru2 %p", __func__, ep);
1741 /* this means MPA_v1 is used */
1742 event.ord = c4iw_max_read_depth;
1743 event.ird = c4iw_max_read_depth;
1744 event.private_data_len = ep->plen;
1745 event.private_data = ep->mpa_pkt +
1746 sizeof(struct mpa_message);
1747 }
1748 }
1749
1750 if (ep->com.cm_id) {
1751
1752 CTR2(KTR_IW_CXGBE, "%s:cru3 %p", __func__, ep);
1753 set_bit(CONN_RPL_UPCALL, &ep->com.history);
1754 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1755 }
1756
1757 if(status == -ECONNABORTED) {
1758
1759 CTR3(KTR_IW_CXGBE, "%s:cruE %p %d", __func__, ep, status);
1760 return;
1761 }
1762
1763 if (status < 0) {
1764
1765 CTR3(KTR_IW_CXGBE, "%s:cru4 %p %d", __func__, ep, status);
1766 deref_cm_id(&ep->com);
1767 }
1768
1769 CTR2(KTR_IW_CXGBE, "%s:cruE %p", __func__, ep);
1770}
1771
1772static int connect_request_upcall(struct c4iw_ep *ep)
1773{
1774 struct iw_cm_event event;
1775 int ret;
1776
1777 CTR3(KTR_IW_CXGBE, "%s: ep %p, mpa_v1 %d", __func__, ep,
1778 ep->tried_with_mpa_v1);
1779
1780 memset(&event, 0, sizeof(event));
1781 event.event = IW_CM_EVENT_CONNECT_REQUEST;
1782 event.local_addr = ep->com.local_addr;
1783 event.remote_addr = ep->com.remote_addr;
1784 event.provider_data = ep;
1785
1786 if (!ep->tried_with_mpa_v1) {
1787 /* this means MPA_v2 is used */
1788 event.ord = ep->ord;
1789 event.ird = ep->ird;
1790 event.private_data_len = ep->plen -
1791 sizeof(struct mpa_v2_conn_params);
1792 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) +
1793 sizeof(struct mpa_v2_conn_params);
1794 } else {
1795
1796 /* this means MPA_v1 is used. Send max supported */
1797 event.ord = c4iw_max_read_depth;
1798 event.ird = c4iw_max_read_depth;
1799 event.private_data_len = ep->plen;
1800 event.private_data = ep->mpa_pkt + sizeof(struct mpa_message);
1801 }
1802
1803 c4iw_get_ep(&ep->com);
1804 ret = ep->parent_ep->com.cm_id->event_handler(ep->parent_ep->com.cm_id,
1805 &event);
1806 if(ret) {
1807 CTR3(KTR_IW_CXGBE, "%s: ep %p, Failure while notifying event to"
1808 " IWCM, err:%d", __func__, ep, ret);
1809 c4iw_put_ep(&ep->com);
1810 } else
1811 /* Dereference parent_ep only in success case.
1812 * In case of failure, parent_ep is dereferenced by the caller
1813 * of process_mpa_request().
1814 */
1815 c4iw_put_ep(&ep->parent_ep->com);
1816
1817 set_bit(CONNREQ_UPCALL, &ep->com.history);
1818 return ret;
1819}
1820
1821static void established_upcall(struct c4iw_ep *ep)
1822{
1823 struct iw_cm_event event;
1824
1825 CTR2(KTR_IW_CXGBE, "%s:euB %p", __func__, ep);
1826 memset(&event, 0, sizeof(event));
1827 event.event = IW_CM_EVENT_ESTABLISHED;
1828 event.ird = ep->ord;
1829 event.ord = ep->ird;
1830
1831 if (ep->com.cm_id) {
1832
1833 CTR2(KTR_IW_CXGBE, "%s:eu1 %p", __func__, ep);
1834 ep->com.cm_id->event_handler(ep->com.cm_id, &event);
1835 set_bit(ESTAB_UPCALL, &ep->com.history);
1836 }
1837 CTR2(KTR_IW_CXGBE, "%s:euE %p", __func__, ep);
1838}
1839
1840
1841#define RELAXED_IRD_NEGOTIATION 1
1842
1843/*
1844 * process_mpa_reply - process streaming mode MPA reply
1845 *
1846 * Returns:
1847 *
1848 * 0 upon success indicating a connect request was delivered to the ULP
1849 * or the mpa request is incomplete but valid so far.
1850 *
1851 * 1 if a failure requires the caller to close the connection.
1852 *
1853 * 2 if a failure requires the caller to abort the connection.
1854 */
1855static int process_mpa_reply(struct c4iw_ep *ep)
1856{
1857 struct mpa_message *mpa;
1858 struct mpa_v2_conn_params *mpa_v2_params;
1859 u16 plen;
1860 u16 resp_ird, resp_ord;
1861 u8 rtr_mismatch = 0, insuff_ird = 0;
1862 struct c4iw_qp_attributes attrs = {0};
1863 enum c4iw_qp_attr_mask mask;
1864 int err;
1865 struct mbuf *top, *m;
1866 int flags = MSG_DONTWAIT;
1867 struct uio uio;
1868 int disconnect = 0;
1869
1870 CTR2(KTR_IW_CXGBE, "%s:pmrB %p", __func__, ep);
1871
1872 /*
1873 * Stop mpa timer. If it expired, then
1874 * we ignore the MPA reply. process_timeout()
1875 * will abort the connection.
1876 */
1877 if (STOP_EP_TIMER(ep))
1878 return 0;
1879
1880 uio.uio_resid = 1000000;
1881 uio.uio_td = ep->com.thread;
1882 err = soreceive(ep->com.so, NULL, &uio, &top, NULL, &flags);
1883
1884 if (err) {
1885
1886 if (err == EWOULDBLOCK) {
1887
1888 CTR2(KTR_IW_CXGBE, "%s:pmr1 %p", __func__, ep);
1889 START_EP_TIMER(ep);
1890 return 0;
1891 }
1892 err = -err;
1893 CTR2(KTR_IW_CXGBE, "%s:pmr2 %p", __func__, ep);
1894 goto err;
1895 }
1896
1897 if (ep->com.so->so_rcv.sb_mb) {
1898
1899 CTR2(KTR_IW_CXGBE, "%s:pmr3 %p", __func__, ep);
1900 printf("%s data after soreceive called! so %p sb_mb %p top %p\n",
1901 __func__, ep->com.so, ep->com.so->so_rcv.sb_mb, top);
1902 }
1903
1904 m = top;
1905
1906 do {
1907
1908 CTR2(KTR_IW_CXGBE, "%s:pmr4 %p", __func__, ep);
1909 /*
1910 * If we get more than the supported amount of private data
1911 * then we must fail this connection.
1912 */
1913 if (ep->mpa_pkt_len + m->m_len > sizeof(ep->mpa_pkt)) {
1914
1915 CTR3(KTR_IW_CXGBE, "%s:pmr5 %p %d", __func__, ep,
1916 ep->mpa_pkt_len + m->m_len);
1917 err = (-EINVAL);
1918 goto err_stop_timer;
1919 }
1920
1921 /*
1922 * copy the new data into our accumulation buffer.
1923 */
1924 m_copydata(m, 0, m->m_len, &(ep->mpa_pkt[ep->mpa_pkt_len]));
1925 ep->mpa_pkt_len += m->m_len;
1926 if (!m->m_next)
1927 m = m->m_nextpkt;
1928 else
1929 m = m->m_next;
1930 } while (m);
1931
1932 m_freem(top);
1933 /*
1934 * if we don't even have the mpa message, then bail.
1935 */
1936 if (ep->mpa_pkt_len < sizeof(*mpa)) {
1937 return 0;
1938 }
1939 mpa = (struct mpa_message *) ep->mpa_pkt;
1940
1941 /* Validate MPA header. */
1942 if (mpa->revision > mpa_rev) {
1943
1944 CTR4(KTR_IW_CXGBE, "%s:pmr6 %p %d %d", __func__, ep,
1945 mpa->revision, mpa_rev);
1946 printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d, "
1947 " Received = %d\n", __func__, mpa_rev, mpa->revision);
1948 err = -EPROTO;
1949 goto err_stop_timer;
1950 }
1951
1952 if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) {
1953
1954 CTR2(KTR_IW_CXGBE, "%s:pmr7 %p", __func__, ep);
1955 err = -EPROTO;
1956 goto err_stop_timer;
1957 }
1958
1959 plen = ntohs(mpa->private_data_size);
1960
1961 /*
1962 * Fail if there's too much private data.
1963 */
1964 if (plen > MPA_MAX_PRIVATE_DATA) {
1965
1966 CTR2(KTR_IW_CXGBE, "%s:pmr8 %p", __func__, ep);
1967 err = -EPROTO;
1968 goto err_stop_timer;
1969 }
1970
1971 /*
1972 * If plen does not account for pkt size
1973 */
1974 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) {
1975
1976 CTR2(KTR_IW_CXGBE, "%s:pmr9 %p", __func__, ep);
1977 STOP_EP_TIMER(ep);
1978 err = -EPROTO;
1979 goto err_stop_timer;
1980 }
1981
1982 ep->plen = (u8) plen;
1983
1984 /*
1985 * If we don't have all the pdata yet, then bail.
1986 * We'll continue process when more data arrives.
1987 */
1988 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) {
1989
1990 CTR2(KTR_IW_CXGBE, "%s:pmra %p", __func__, ep);
1991 return 0;
1992 }
1993
1994 if (mpa->flags & MPA_REJECT) {
1995
1996 CTR2(KTR_IW_CXGBE, "%s:pmrb %p", __func__, ep);
1997 err = -ECONNREFUSED;
1998 goto err_stop_timer;
1999 }
2000
2001 /*
2002 * If we get here we have accumulated the entire mpa
2003 * start reply message including private data. And
2004 * the MPA header is valid.
2005 */
2006 ep->com.state = FPDU_MODE;
2007 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0;
2008 ep->mpa_attr.recv_marker_enabled = markers_enabled;
2009 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0;
2010 ep->mpa_attr.version = mpa->revision;
2011 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
2012
2013 if (mpa->revision == 2) {
2014
2015 CTR2(KTR_IW_CXGBE, "%s:pmrc %p", __func__, ep);
2016 ep->mpa_attr.enhanced_rdma_conn =
2017 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0;
2018
2019 if (ep->mpa_attr.enhanced_rdma_conn) {
2020
2021 CTR2(KTR_IW_CXGBE, "%s:pmrd %p", __func__, ep);
2022 mpa_v2_params = (struct mpa_v2_conn_params *)
2023 (ep->mpa_pkt + sizeof(*mpa));
2024 resp_ird = ntohs(mpa_v2_params->ird) &
2025 MPA_V2_IRD_ORD_MASK;
2026 resp_ord = ntohs(mpa_v2_params->ord) &
2027 MPA_V2_IRD_ORD_MASK;
2028
2029 /*
2030 * This is a double-check. Ideally, below checks are
2031 * not required since ird/ord stuff has been taken
2032 * care of in c4iw_accept_cr
2033 */
2034 if (ep->ird < resp_ord) {
2035 if (RELAXED_IRD_NEGOTIATION && resp_ord <=
2036 ep->com.dev->rdev.adap->params.max_ordird_qp)
2037 ep->ird = resp_ord;
2038 else
2039 insuff_ird = 1;
2040 } else if (ep->ird > resp_ord) {
2041 ep->ird = resp_ord;
2042 }
2043 if (ep->ord > resp_ird) {
2044 if (RELAXED_IRD_NEGOTIATION)
2045 ep->ord = resp_ird;
2046 else
2047 insuff_ird = 1;
2048 }
2049 if (insuff_ird) {
2050 err = -ENOMEM;
2051 ep->ird = resp_ord;
2052 ep->ord = resp_ird;
2053 }
2054
2055 if (ntohs(mpa_v2_params->ird) &
2056 MPA_V2_PEER2PEER_MODEL) {
2057
2058 CTR2(KTR_IW_CXGBE, "%s:pmrf %p", __func__, ep);
2059 if (ntohs(mpa_v2_params->ord) &
2060 MPA_V2_RDMA_WRITE_RTR) {
2061
2062 CTR2(KTR_IW_CXGBE, "%s:pmrg %p", __func__, ep);
2063 ep->mpa_attr.p2p_type =
2064 FW_RI_INIT_P2PTYPE_RDMA_WRITE;
2065 }
2066 else if (ntohs(mpa_v2_params->ord) &
2067 MPA_V2_RDMA_READ_RTR) {
2068
2069 CTR2(KTR_IW_CXGBE, "%s:pmrh %p", __func__, ep);
2070 ep->mpa_attr.p2p_type =
2071 FW_RI_INIT_P2PTYPE_READ_REQ;
2072 }
2073 }
2074 }
2075 } else {
2076
2077 CTR2(KTR_IW_CXGBE, "%s:pmri %p", __func__, ep);
2078
2079 if (mpa->revision == 1) {
2080
2081 CTR2(KTR_IW_CXGBE, "%s:pmrj %p", __func__, ep);
2082
2083 if (peer2peer) {
2084
2085 CTR2(KTR_IW_CXGBE, "%s:pmrk %p", __func__, ep);
2086 ep->mpa_attr.p2p_type = p2p_type;
2087 }
2088 }
2089 }
2090
2091 if (set_tcpinfo(ep)) {
2092
2093 CTR2(KTR_IW_CXGBE, "%s:pmrl %p", __func__, ep);
2094 printf("%s set_tcpinfo error\n", __func__);
2095 err = -ECONNRESET;
2096 goto err;
2097 }
2098
2099 CTR6(KTR_IW_CXGBE, "%s - crc_enabled = %d, recv_marker_enabled = %d, "
2100 "xmit_marker_enabled = %d, version = %d p2p_type = %d", __func__,
2101 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled,
2102 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version,
2103 ep->mpa_attr.p2p_type);
2104
2105 /*
2106 * If responder's RTR does not match with that of initiator, assign
2107 * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not
2108 * generated when moving QP to RTS state.
2109 * A TERM message will be sent after QP has moved to RTS state
2110 */
2111 if ((ep->mpa_attr.version == 2) && peer2peer &&
2112 (ep->mpa_attr.p2p_type != p2p_type)) {
2113
2114 CTR2(KTR_IW_CXGBE, "%s:pmrm %p", __func__, ep);
2115 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
2116 rtr_mismatch = 1;
2117 }
2118
2119
2120 //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq;
2121 attrs.mpa_attr = ep->mpa_attr;
2122 attrs.max_ird = ep->ird;
2123 attrs.max_ord = ep->ord;
2124 attrs.llp_stream_handle = ep;
2125 attrs.next_state = C4IW_QP_STATE_RTS;
2126
2127 mask = C4IW_QP_ATTR_NEXT_STATE |
2128 C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR |
2129 C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD;
2130
2131 /* bind QP and TID with INIT_WR */
2132 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1);
2133
2134 if (err) {
2135
2136 CTR2(KTR_IW_CXGBE, "%s:pmrn %p", __func__, ep);
2137 goto err;
2138 }
2139
2140 /*
2141 * If responder's RTR requirement did not match with what initiator
2142 * supports, generate TERM message
2143 */
2144 if (rtr_mismatch) {
2145
2146 CTR2(KTR_IW_CXGBE, "%s:pmro %p", __func__, ep);
2147 printk(KERN_ERR "%s: RTR mismatch, sending TERM\n", __func__);
2148 attrs.layer_etype = LAYER_MPA | DDP_LLP;
2149 attrs.ecode = MPA_NOMATCH_RTR;
2150 attrs.next_state = C4IW_QP_STATE_TERMINATE;
2151 attrs.send_term = 1;
2152 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
2153 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
2154 err = -ENOMEM;
2155 disconnect = 1;
2156 goto out;
2157 }
2158
2159 /*
2160 * Generate TERM if initiator IRD is not sufficient for responder
2161 * provided ORD. Currently, we do the same behaviour even when
2162 * responder provided IRD is also not sufficient as regards to
2163 * initiator ORD.
2164 */
2165 if (insuff_ird) {
2166
2167 CTR2(KTR_IW_CXGBE, "%s:pmrp %p", __func__, ep);
2168 printk(KERN_ERR "%s: Insufficient IRD, sending TERM\n",
2169 __func__);
2170 attrs.layer_etype = LAYER_MPA | DDP_LLP;
2171 attrs.ecode = MPA_INSUFF_IRD;
2172 attrs.next_state = C4IW_QP_STATE_TERMINATE;
2173 attrs.send_term = 1;
2174 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
2175 C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
2176 err = -ENOMEM;
2177 disconnect = 1;
2178 goto out;
2179 }
2180 goto out;
2181err_stop_timer:
2182 STOP_EP_TIMER(ep);
2183err:
2184 disconnect = 2;
2185out:
2186 connect_reply_upcall(ep, err);
2187 CTR2(KTR_IW_CXGBE, "%s:pmrE %p", __func__, ep);
2188 return disconnect;
2189}
2190
2191/*
2192 * process_mpa_request - process streaming mode MPA request
2193 *
2194 * Returns:
2195 *
2196 * 0 upon success indicating a connect request was delivered to the ULP
2197 * or the mpa request is incomplete but valid so far.
2198 *
2199 * 1 if a failure requires the caller to close the connection.
2200 *
2201 * 2 if a failure requires the caller to abort the connection.
2202 */
2203static int
2204process_mpa_request(struct c4iw_ep *ep)
2205{
2206 struct mpa_message *mpa;
2207 struct mpa_v2_conn_params *mpa_v2_params;
2208 u16 plen;
2209 int flags = MSG_DONTWAIT;
2210 int rc;
2211 struct iovec iov;
2212 struct uio uio;
2213 enum c4iw_ep_state state = ep->com.state;
2214
2215 CTR3(KTR_IW_CXGBE, "%s: ep %p, state %s", __func__, ep, states[state]);
2216
2217 if (state != MPA_REQ_WAIT)
2218 return 0;
2219
2220 iov.iov_base = &ep->mpa_pkt[ep->mpa_pkt_len];
2221 iov.iov_len = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len;
2222 uio.uio_iov = &iov;
2223 uio.uio_iovcnt = 1;
2224 uio.uio_offset = 0;
2225 uio.uio_resid = sizeof(ep->mpa_pkt) - ep->mpa_pkt_len;
2226 uio.uio_segflg = UIO_SYSSPACE;
2227 uio.uio_rw = UIO_READ;
2228 uio.uio_td = NULL; /* uio.uio_td = ep->com.thread; */
2229
2230 rc = soreceive(ep->com.so, NULL, &uio, NULL, NULL, &flags);
2231 if (rc == EAGAIN)
2232 return 0;
2233 else if (rc)
2234 goto err_stop_timer;
2235
2236 KASSERT(uio.uio_offset > 0, ("%s: sorecieve on so %p read no data",
2237 __func__, ep->com.so));
2238 ep->mpa_pkt_len += uio.uio_offset;
2239
2240 /*
2241 * If we get more than the supported amount of private data then we must
2242 * fail this connection. XXX: check so_rcv->sb_cc, or peek with another
2243 * soreceive, or increase the size of mpa_pkt by 1 and abort if the last
2244 * byte is filled by the soreceive above.
2245 */
2246
2247 /* Don't even have the MPA message. Wait for more data to arrive. */
2248 if (ep->mpa_pkt_len < sizeof(*mpa))
2249 return 0;
2250 mpa = (struct mpa_message *) ep->mpa_pkt;
2251
2252 /*
2253 * Validate MPA Header.
2254 */
2255 if (mpa->revision > mpa_rev) {
2256 log(LOG_ERR, "%s: MPA version mismatch. Local = %d,"
2257 " Received = %d\n", __func__, mpa_rev, mpa->revision);
2258 goto err_stop_timer;
2259 }
2260
2261 if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)))
2262 goto err_stop_timer;
2263
2264 /*
2265 * Fail if there's too much private data.
2266 */
2267 plen = ntohs(mpa->private_data_size);
2268 if (plen > MPA_MAX_PRIVATE_DATA)
2269 goto err_stop_timer;
2270
2271 /*
2272 * If plen does not account for pkt size
2273 */
2274 if (ep->mpa_pkt_len > (sizeof(*mpa) + plen))
2275 goto err_stop_timer;
2276
2277 ep->plen = (u8) plen;
2278
2279 /*
2280 * If we don't have all the pdata yet, then bail.
2281 */
2282 if (ep->mpa_pkt_len < (sizeof(*mpa) + plen))
2283 return 0;
2284
2285 /*
2286 * If we get here we have accumulated the entire mpa
2287 * start reply message including private data.
2288 */
2289 ep->mpa_attr.initiator = 0;
2290 ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0;
2291 ep->mpa_attr.recv_marker_enabled = markers_enabled;
2292 ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0;
2293 ep->mpa_attr.version = mpa->revision;
2294 if (mpa->revision == 1)
2295 ep->tried_with_mpa_v1 = 1;
2296 ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED;
2297
2298 if (mpa->revision == 2) {
2299 ep->mpa_attr.enhanced_rdma_conn =
2300 mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0;
2301 if (ep->mpa_attr.enhanced_rdma_conn) {
2302 mpa_v2_params = (struct mpa_v2_conn_params *)
2303 (ep->mpa_pkt + sizeof(*mpa));
2304 ep->ird = ntohs(mpa_v2_params->ird) &
2305 MPA_V2_IRD_ORD_MASK;
2306 ep->ird = min_t(u32, ep->ird,
2307 cur_max_read_depth(ep->com.dev));
2308 ep->ord = ntohs(mpa_v2_params->ord) &
2309 MPA_V2_IRD_ORD_MASK;
2310 ep->ord = min_t(u32, ep->ord,
2311 cur_max_read_depth(ep->com.dev));
2312 CTR3(KTR_IW_CXGBE, "%s initiator ird %u ord %u",
2313 __func__, ep->ird, ep->ord);
2314 if (ntohs(mpa_v2_params->ird) & MPA_V2_PEER2PEER_MODEL)
2315 if (peer2peer) {
2316 if (ntohs(mpa_v2_params->ord) &
2317 MPA_V2_RDMA_WRITE_RTR)
2318 ep->mpa_attr.p2p_type =
2319 FW_RI_INIT_P2PTYPE_RDMA_WRITE;
2320 else if (ntohs(mpa_v2_params->ord) &
2321 MPA_V2_RDMA_READ_RTR)
2322 ep->mpa_attr.p2p_type =
2323 FW_RI_INIT_P2PTYPE_READ_REQ;
2324 }
2325 }
2326 } else if (mpa->revision == 1 && peer2peer)
2327 ep->mpa_attr.p2p_type = p2p_type;
2328
2329 if (set_tcpinfo(ep))
2330 goto err_stop_timer;
2331
2332 CTR5(KTR_IW_CXGBE, "%s: crc_enabled = %d, recv_marker_enabled = %d, "
2333 "xmit_marker_enabled = %d, version = %d", __func__,
2334 ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled,
2335 ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version);
2336
2337 ep->com.state = MPA_REQ_RCVD;
2338 STOP_EP_TIMER(ep);
2339
2340 /* drive upcall */
2341 if (ep->parent_ep->com.state != DEAD)
2342 if (connect_request_upcall(ep))
2343 goto err_out;
2344 return 0;
2345
2346err_stop_timer:
2347 STOP_EP_TIMER(ep);
2348err_out:
2349 return 2;
2350}
2351
2352/*
2353 * Upcall from the adapter indicating data has been transmitted.
2354 * For us its just the single MPA request or reply. We can now free
2355 * the skb holding the mpa message.
2356 */
2357int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
2358{
2359#ifdef KTR
2360 int err;
2361#endif
2362 struct c4iw_ep *ep = to_ep(cm_id);
2363 int abort = 0;
2364
2365 mutex_lock(&ep->com.mutex);
2366 CTR2(KTR_IW_CXGBE, "%s:crcB %p", __func__, ep);
2367
2368 if ((ep->com.state == DEAD) ||
2369 (ep->com.state != MPA_REQ_RCVD)) {
2370
2371 CTR2(KTR_IW_CXGBE, "%s:crc1 %p", __func__, ep);
2372 mutex_unlock(&ep->com.mutex);
2373 c4iw_put_ep(&ep->com);
2374 return -ECONNRESET;
2375 }
2376 set_bit(ULP_REJECT, &ep->com.history);
2377
2378 if (mpa_rev == 0) {
2379
2380 CTR2(KTR_IW_CXGBE, "%s:crc2 %p", __func__, ep);
2381 abort = 1;
2382 }
2383 else {
2384
2385 CTR2(KTR_IW_CXGBE, "%s:crc3 %p", __func__, ep);
2386 abort = send_mpa_reject(ep, pdata, pdata_len);
2387 }
2388 STOP_EP_TIMER(ep);
2389#ifdef KTR
2390 err = c4iw_ep_disconnect(ep, abort != 0, GFP_KERNEL);
2391#else
2392 c4iw_ep_disconnect(ep, abort != 0, GFP_KERNEL);
2393#endif
2394 mutex_unlock(&ep->com.mutex);
2395 c4iw_put_ep(&ep->com);
2396 CTR3(KTR_IW_CXGBE, "%s:crc4 %p, err: %d", __func__, ep, err);
2397 return 0;
2398}
2399
2400int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
2401{
2402 int err;
2403 struct c4iw_qp_attributes attrs = {0};
2404 enum c4iw_qp_attr_mask mask;
2405 struct c4iw_ep *ep = to_ep(cm_id);
2406 struct c4iw_dev *h = to_c4iw_dev(cm_id->device);
2407 struct c4iw_qp *qp = get_qhp(h, conn_param->qpn);
2408 int abort = 0;
2409
2410 mutex_lock(&ep->com.mutex);
2411 CTR2(KTR_IW_CXGBE, "%s:cacB %p", __func__, ep);
2412
2413 if ((ep->com.state == DEAD) ||
2414 (ep->com.state != MPA_REQ_RCVD)) {
2415
2416 CTR2(KTR_IW_CXGBE, "%s:cac1 %p", __func__, ep);
2417 err = -ECONNRESET;
2418 goto err_out;
2419 }
2420
2421 BUG_ON(!qp);
2422
2423 set_bit(ULP_ACCEPT, &ep->com.history);
2424
2425 if ((conn_param->ord > c4iw_max_read_depth) ||
2426 (conn_param->ird > c4iw_max_read_depth)) {
2427
2428 CTR2(KTR_IW_CXGBE, "%s:cac2 %p", __func__, ep);
2429 err = -EINVAL;
2430 goto err_abort;
2431 }
2432
2433 if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) {
2434
2435 CTR2(KTR_IW_CXGBE, "%s:cac3 %p", __func__, ep);
2436
2437 if (conn_param->ord > ep->ird) {
2438 if (RELAXED_IRD_NEGOTIATION) {
2439 conn_param->ord = ep->ird;
2440 } else {
2441 ep->ird = conn_param->ird;
2442 ep->ord = conn_param->ord;
2443 send_mpa_reject(ep, conn_param->private_data,
2444 conn_param->private_data_len);
2445 err = -ENOMEM;
2446 goto err_abort;
2447 }
2448 }
2449 if (conn_param->ird < ep->ord) {
2450 if (RELAXED_IRD_NEGOTIATION &&
2451 ep->ord <= h->rdev.adap->params.max_ordird_qp) {
2452 conn_param->ird = ep->ord;
2453 } else {
2454 err = -ENOMEM;
2455 goto err_abort;
2456 }
2457 }
2458 }
2459 ep->ird = conn_param->ird;
2460 ep->ord = conn_param->ord;
2461
2462 if (ep->mpa_attr.version == 1) {
2463 if (peer2peer && ep->ird == 0)
2464 ep->ird = 1;
2465 } else {
2466 if (peer2peer &&
2467 (ep->mpa_attr.p2p_type != FW_RI_INIT_P2PTYPE_DISABLED) &&
2468 (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) && ep->ird == 0)
2469 ep->ird = 1;
2470 }
2471
2472 CTR4(KTR_IW_CXGBE, "%s %d ird %d ord %d", __func__, __LINE__,
2473 ep->ird, ep->ord);
2474
2475 ep->com.cm_id = cm_id;
2476 ref_cm_id(&ep->com);
2477 ep->com.qp = qp;
2478 ref_qp(ep);
2479 //ep->ofld_txq = TOEPCB(ep->com.so)->ofld_txq;
2480
2481 /* bind QP to EP and move to RTS */
2482 attrs.mpa_attr = ep->mpa_attr;
2483 attrs.max_ird = ep->ird;
2484 attrs.max_ord = ep->ord;
2485 attrs.llp_stream_handle = ep;
2486 attrs.next_state = C4IW_QP_STATE_RTS;
2487
2488 /* bind QP and TID with INIT_WR */
2489 mask = C4IW_QP_ATTR_NEXT_STATE |
2490 C4IW_QP_ATTR_LLP_STREAM_HANDLE |
2491 C4IW_QP_ATTR_MPA_ATTR |
2492 C4IW_QP_ATTR_MAX_IRD |
2493 C4IW_QP_ATTR_MAX_ORD;
2494
2495 err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, mask, &attrs, 1);
2496 if (err) {
2497 CTR3(KTR_IW_CXGBE, "%s:caca %p, err: %d", __func__, ep, err);
2498 goto err_defef_cm_id;
2499 }
2500
2501 err = send_mpa_reply(ep, conn_param->private_data,
2502 conn_param->private_data_len);
2503 if (err) {
2504 CTR3(KTR_IW_CXGBE, "%s:cacb %p, err: %d", __func__, ep, err);
2505 goto err_defef_cm_id;
2506 }
2507
2508 ep->com.state = FPDU_MODE;
2509 established_upcall(ep);
2510 mutex_unlock(&ep->com.mutex);
2511 c4iw_put_ep(&ep->com);
2512 CTR2(KTR_IW_CXGBE, "%s:cacE %p", __func__, ep);
2513 return 0;
2514err_defef_cm_id:
2515 deref_cm_id(&ep->com);
2516err_abort:
2517 abort = 1;
2518err_out:
2519 if (abort)
2520 c4iw_ep_disconnect(ep, 1, GFP_KERNEL);
2521 mutex_unlock(&ep->com.mutex);
2522 c4iw_put_ep(&ep->com);
2523 CTR2(KTR_IW_CXGBE, "%s:cacE err %p", __func__, ep);
2524 return err;
2525}
2526
2527static int
2528c4iw_sock_create(struct sockaddr_storage *laddr, struct socket **so)
2529{
2530 int ret;
2531 int size, on;
2532 struct socket *sock = NULL;
2533 struct sockopt sopt;
2534
2535 ret = sock_create_kern(laddr->ss_family,
2536 SOCK_STREAM, IPPROTO_TCP, &sock);
2537 if (ret) {
2538 CTR2(KTR_IW_CXGBE, "%s:Failed to create TCP socket. err %d",
2539 __func__, ret);
2540 return ret;
2541 }
2542
2543 if (reuseaddr) {
2544 bzero(&sopt, sizeof(struct sockopt));
2545 sopt.sopt_dir = SOPT_SET;
2546 sopt.sopt_level = SOL_SOCKET;
2547 sopt.sopt_name = SO_REUSEADDR;
2548 on = 1;
2549 sopt.sopt_val = &on;
2550 sopt.sopt_valsize = sizeof(on);
2551 ret = -sosetopt(sock, &sopt);
2552 if (ret != 0) {
2553 log(LOG_ERR, "%s: sosetopt(%p, SO_REUSEADDR) "
2554 "failed with %d.\n", __func__, sock, ret);
2555 }
2556 bzero(&sopt, sizeof(struct sockopt));
2557 sopt.sopt_dir = SOPT_SET;
2558 sopt.sopt_level = SOL_SOCKET;
2559 sopt.sopt_name = SO_REUSEPORT;
2560 on = 1;
2561 sopt.sopt_val = &on;
2562 sopt.sopt_valsize = sizeof(on);
2563 ret = -sosetopt(sock, &sopt);
2564 if (ret != 0) {
2565 log(LOG_ERR, "%s: sosetopt(%p, SO_REUSEPORT) "
2566 "failed with %d.\n", __func__, sock, ret);
2567 }
2568 }
2569
2570 ret = -sobind(sock, (struct sockaddr *)laddr, curthread);
2571 if (ret) {
2572 CTR2(KTR_IW_CXGBE, "%s:Failed to bind socket. err %p",
2573 __func__, ret);
2574 sock_release(sock);
2575 return ret;
2576 }
2577
2578 size = laddr->ss_family == AF_INET6 ?
2579 sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in);
2580 ret = sock_getname(sock, (struct sockaddr *)laddr, &size, 0);
2581 if (ret) {
2582 CTR2(KTR_IW_CXGBE, "%s:sock_getname failed. err %p",
2583 __func__, ret);
2584 sock_release(sock);
2585 return ret;
2586 }
2587
2588 *so = sock;
2589 return 0;
2590}
2591
2592int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
2593{
2594 int err = 0;
2595 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device);
2596 struct c4iw_ep *ep = NULL;
2597 struct ifnet *nh_ifp; /* Logical egress interface */
2598 struct epoch_tracker et;
2599#ifdef VIMAGE
2600 struct rdma_cm_id *rdma_id = (struct rdma_cm_id*)cm_id->context;
2601 struct vnet *vnet = rdma_id->route.addr.dev_addr.net;
2602#endif
2603
2604 CTR2(KTR_IW_CXGBE, "%s:ccB %p", __func__, cm_id);
2605
2606
2607 if ((conn_param->ord > c4iw_max_read_depth) ||
2608 (conn_param->ird > c4iw_max_read_depth)) {
2609
2610 CTR2(KTR_IW_CXGBE, "%s:cc1 %p", __func__, cm_id);
2611 err = -EINVAL;
2612 goto out;
2613 }
2614 ep = alloc_ep(sizeof(*ep), GFP_KERNEL);
2615 cm_id->provider_data = ep;
2616
2617 init_timer(&ep->timer);
2618 ep->plen = conn_param->private_data_len;
2619
2620 if (ep->plen) {
2621
2622 CTR2(KTR_IW_CXGBE, "%s:cc3 %p", __func__, ep);
2623 memcpy(ep->mpa_pkt + sizeof(struct mpa_message),
2624 conn_param->private_data, ep->plen);
2625 }
2626 ep->ird = conn_param->ird;
2627 ep->ord = conn_param->ord;
2628
2629 if (peer2peer && ep->ord == 0) {
2630
2631 CTR2(KTR_IW_CXGBE, "%s:cc4 %p", __func__, ep);
2632 ep->ord = 1;
2633 }
2634
2635 ep->com.dev = dev;
2636 ep->com.cm_id = cm_id;
2637 ref_cm_id(&ep->com);
2638 ep->com.qp = get_qhp(dev, conn_param->qpn);
2639
2640 if (!ep->com.qp) {
2641
2642 CTR2(KTR_IW_CXGBE, "%s:cc5 %p", __func__, ep);
2643 err = -EINVAL;
2644 goto fail;
2645 }
2646 ref_qp(ep);
2647 ep->com.thread = curthread;
2648
2649 NET_EPOCH_ENTER(et);
2650 CURVNET_SET(vnet);
2651 err = get_ifnet_from_raddr(&cm_id->remote_addr, &nh_ifp);
2652 CURVNET_RESTORE();
2653 NET_EPOCH_EXIT(et);
2654
2655 if (err) {
2656
2657 CTR2(KTR_IW_CXGBE, "%s:cc7 %p", __func__, ep);
2658 printk(KERN_ERR MOD "%s - cannot find route.\n", __func__);
2659 err = EHOSTUNREACH;
2660 return err;
2661 }
2662
2663 if (!(nh_ifp->if_capenable & IFCAP_TOE) ||
2664 TOEDEV(nh_ifp) == NULL) {
2665 err = -ENOPROTOOPT;
2666 goto fail;
2667 }
2668 ep->com.state = CONNECTING;
2669 ep->tos = 0;
2670 ep->com.local_addr = cm_id->local_addr;
2671 ep->com.remote_addr = cm_id->remote_addr;
2672
2673 err = c4iw_sock_create(&cm_id->local_addr, &ep->com.so);
2674 if (err)
2675 goto fail;
2676
2677 setiwsockopt(ep->com.so);
2678 init_iwarp_socket(ep->com.so, &ep->com);
2679 err = -soconnect(ep->com.so, (struct sockaddr *)&ep->com.remote_addr,
2680 ep->com.thread);
2681 if (err)
2682 goto fail_free_so;
2683 CTR2(KTR_IW_CXGBE, "%s:ccE, ep %p", __func__, ep);
2684 return 0;
2685
2686fail_free_so:
2687 uninit_iwarp_socket(ep->com.so);
2688 ep->com.state = DEAD;
2689 sock_release(ep->com.so);
2690fail:
2691 deref_cm_id(&ep->com);
2692 c4iw_put_ep(&ep->com);
2693 ep = NULL;
2694out:
2695 CTR2(KTR_IW_CXGBE, "%s:ccE Error %d", __func__, err);
2696 return err;
2697}
2698
2699/*
2700 * iwcm->create_listen. Returns -errno on failure.
2701 */
2702int
2703c4iw_create_listen(struct iw_cm_id *cm_id, int backlog)
2704{
2705 struct c4iw_dev *dev = to_c4iw_dev(cm_id->device);
2706 struct c4iw_listen_ep *lep = NULL;
2707 struct listen_port_info *port_info = NULL;
2708 int rc = 0;
2709
2710 CTR3(KTR_IW_CXGBE, "%s: cm_id %p, backlog %s", __func__, cm_id,
2711 backlog);
2712 if (c4iw_fatal_error(&dev->rdev)) {
2713 CTR2(KTR_IW_CXGBE, "%s: cm_id %p, fatal error", __func__,
2714 cm_id);
2715 return -EIO;
2716 }
2717 lep = alloc_ep(sizeof(*lep), GFP_KERNEL);
2718 lep->com.cm_id = cm_id;
2719 ref_cm_id(&lep->com);
2720 lep->com.dev = dev;
2721 lep->backlog = backlog;
2722 lep->com.local_addr = cm_id->local_addr;
2723 lep->com.thread = curthread;
2724 cm_id->provider_data = lep;
2725 lep->com.state = LISTEN;
2726
2727 /* In case of INDADDR_ANY, ibcore creates cmid for each device and
2728 * invokes iw_cxgbe listener callbacks assuming that iw_cxgbe creates
2729 * HW listeners for each device seperately. But toecore expects single
2730 * solisten() call with INADDR_ANY address to create HW listeners on
2731 * all devices for a given port number. So iw_cxgbe driver calls
2732 * solisten() only once for INADDR_ANY(usually done at first time
2733 * listener callback from ibcore). And all the subsequent INADDR_ANY
2734 * listener callbacks from ibcore(for the same port address) do not
2735 * invoke solisten() as first listener callback has already created
2736 * listeners for all other devices(via solisten).
2737 */
2738 if (c4iw_any_addr((struct sockaddr *)&lep->com.local_addr)) {
2739 port_info = add_ep_to_listenlist(lep);
2740 /* skip solisten() if refcnt > 1, as the listeners were
2741 * alredy created by 'Master lep'
2742 */
2743 if (port_info->refcnt > 1) {
2744 /* As there will be only one listener socket for a TCP
2745 * port, copy Master lep's socket pointer to other lep's
2746 * that are belonging to same TCP port.
2747 */
2748 struct c4iw_listen_ep *head_lep =
2749 container_of(port_info->lep_list.next,
2750 struct c4iw_listen_ep, listen_ep_list);
2751 lep->com.so = head_lep->com.so;
2752 goto out;
2753 }
2754 }
2755 rc = c4iw_sock_create(&cm_id->local_addr, &lep->com.so);
2756 if (rc) {
2757 CTR2(KTR_IW_CXGBE, "%s:Failed to create socket. err %d",
2758 __func__, rc);
2759 goto fail;
2760 }
2761
2762 rc = -solisten(lep->com.so, backlog, curthread);
2763 if (rc) {
2764 CTR3(KTR_IW_CXGBE, "%s:Failed to listen on sock:%p. err %d",
2765 __func__, lep->com.so, rc);
2766 goto fail_free_so;
2767 }
2768 init_iwarp_socket(lep->com.so, &lep->com);
2769out:
2770 return 0;
2771
2772fail_free_so:
2773 sock_release(lep->com.so);
2774fail:
2775 if (port_info)
2776 rem_ep_from_listenlist(lep);
2777 deref_cm_id(&lep->com);
2778 c4iw_put_ep(&lep->com);
2779 return rc;
2780}
2781
2782int
2783c4iw_destroy_listen(struct iw_cm_id *cm_id)
2784{
2785 struct c4iw_listen_ep *lep = to_listen_ep(cm_id);
2786
2787 mutex_lock(&lep->com.mutex);
2788 CTR3(KTR_IW_CXGBE, "%s: cm_id %p, state %s", __func__, cm_id,
2789 states[lep->com.state]);
2790
2791 lep->com.state = DEAD;
2792 if (c4iw_any_addr((struct sockaddr *)&lep->com.local_addr)) {
2793 /* if no refcount then close listen socket */
2794 if (!rem_ep_from_listenlist(lep))
2795 close_socket(lep->com.so);
2796 } else
2797 close_socket(lep->com.so);
2798 deref_cm_id(&lep->com);
2799 mutex_unlock(&lep->com.mutex);
2800 c4iw_put_ep(&lep->com);
2801 return 0;
2802}
2803
2804int __c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp)
2805{
2806 int ret;
2807 mutex_lock(&ep->com.mutex);
2808 ret = c4iw_ep_disconnect(ep, abrupt, gfp);
2809 mutex_unlock(&ep->com.mutex);
2810 return ret;
2811}
2812
2813int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp)
2814{
2815 int ret = 0;
2816 int close = 0;
2817 struct c4iw_rdev *rdev;
2818
2819
2820 CTR2(KTR_IW_CXGBE, "%s:cedB %p", __func__, ep);
2821
2822 rdev = &ep->com.dev->rdev;
2823
2824 if (c4iw_fatal_error(rdev)) {
2825 CTR3(KTR_IW_CXGBE, "%s:ced1 fatal error %p %s", __func__, ep,
2826 states[ep->com.state]);
2827 if (ep->com.state != DEAD) {
2828 send_abort(ep);
2829 ep->com.state = DEAD;
2830 }
2831 close_complete_upcall(ep, -ECONNRESET);
2832 return ECONNRESET;
2833 }
2834 CTR3(KTR_IW_CXGBE, "%s:ced2 %p %s", __func__, ep,
2835 states[ep->com.state]);
2836
2837 /*
2838 * Ref the ep here in case we have fatal errors causing the
2839 * ep to be released and freed.
2840 */
2841 c4iw_get_ep(&ep->com);
2842 switch (ep->com.state) {
2843
2844 case MPA_REQ_WAIT:
2845 case MPA_REQ_SENT:
2846 case MPA_REQ_RCVD:
2847 case MPA_REP_SENT:
2848 case FPDU_MODE:
2849 close = 1;
2850 if (abrupt)
2851 ep->com.state = ABORTING;
2852 else {
2853 ep->com.state = CLOSING;
2854 START_EP_TIMER(ep);
2855 }
2856 set_bit(CLOSE_SENT, &ep->com.flags);
2857 break;
2858
2859 case CLOSING:
2860
2861 if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) {
2862
2863 close = 1;
2864 if (abrupt) {
2865 STOP_EP_TIMER(ep);
2866 ep->com.state = ABORTING;
2867 } else
2868 ep->com.state = MORIBUND;
2869 }
2870 break;
2871
2872 case MORIBUND:
2873 case ABORTING:
2874 case DEAD:
2875 CTR3(KTR_IW_CXGBE,
2876 "%s ignoring disconnect ep %p state %u", __func__,
2877 ep, ep->com.state);
2878 break;
2879
2880 default:
2881 BUG();
2882 break;
2883 }
2884
2885
2886 if (close) {
2887
2888 CTR2(KTR_IW_CXGBE, "%s:ced3 %p", __func__, ep);
2889
2890 if (abrupt) {
2891
2892 CTR2(KTR_IW_CXGBE, "%s:ced4 %p", __func__, ep);
2893 set_bit(EP_DISC_ABORT, &ep->com.history);
2894 close_complete_upcall(ep, -ECONNRESET);
2895 send_abort(ep);
2896 } else {
2897
2898 CTR2(KTR_IW_CXGBE, "%s:ced5 %p", __func__, ep);
2899 set_bit(EP_DISC_CLOSE, &ep->com.history);
2900
2901 if (!ep->parent_ep)
2902 ep->com.state = MORIBUND;
2903
2904 CURVNET_SET(ep->com.so->so_vnet);
2905 ret = sodisconnect(ep->com.so);
2906 CURVNET_RESTORE();
2907 if (ret) {
2908 CTR2(KTR_IW_CXGBE, "%s:ced6 %p", __func__, ep);
2909 STOP_EP_TIMER(ep);
2910 send_abort(ep);
2911 ep->com.state = DEAD;
2912 close_complete_upcall(ep, -ECONNRESET);
2913 set_bit(EP_DISC_FAIL, &ep->com.history);
2914 if (ep->com.qp) {
2915 struct c4iw_qp_attributes attrs = {0};
2916
2917 attrs.next_state = C4IW_QP_STATE_ERROR;
2918 ret = c4iw_modify_qp(
2919 ep->com.dev, ep->com.qp,
2920 C4IW_QP_ATTR_NEXT_STATE,
2921 &attrs, 1);
2922 CTR3(KTR_IW_CXGBE, "%s:ced7 %p ret %d",
2923 __func__, ep, ret);
2924 }
2925 }
2926 }
2927 }
2928 c4iw_put_ep(&ep->com);
2929 CTR2(KTR_IW_CXGBE, "%s:cedE %p", __func__, ep);
2930 return ret;
2931}
2932
2933#ifdef C4IW_EP_REDIRECT
2934int c4iw_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new,
2935 struct l2t_entry *l2t)
2936{
2937 struct c4iw_ep *ep = ctx;
2938
2939 if (ep->dst != old)
2940 return 0;
2941
2942 PDBG("%s ep %p redirect to dst %p l2t %p\n", __func__, ep, new,
2943 l2t);
2944 dst_hold(new);
2945 cxgb4_l2t_release(ep->l2t);
2946 ep->l2t = l2t;
2947 dst_release(old);
2948 ep->dst = new;
2949 return 1;
2950}
2951#endif
2952
2953
2954
2955static void ep_timeout(unsigned long arg)
2956{
2957 struct c4iw_ep *ep = (struct c4iw_ep *)arg;
2958
2959 if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) {
2960
2961 /*
2962 * Only insert if it is not already on the list.
2963 */
2964 if (!(ep->com.ep_events & C4IW_EVENT_TIMEOUT)) {
2965 CTR2(KTR_IW_CXGBE, "%s:et1 %p", __func__, ep);
2966 add_ep_to_req_list(ep, C4IW_EVENT_TIMEOUT);
2967 }
2968 }
2969}
2970
2971static int fw6_wr_rpl(struct adapter *sc, const __be64 *rpl)
2972{
2973 uint64_t val = be64toh(*rpl);
2974 int ret;
2975 struct c4iw_wr_wait *wr_waitp;
2976
2977 ret = (int)((val >> 8) & 0xff);
2978 wr_waitp = (struct c4iw_wr_wait *)rpl[1];
2979 CTR3(KTR_IW_CXGBE, "%s wr_waitp %p ret %u", __func__, wr_waitp, ret);
2980 if (wr_waitp)
2981 c4iw_wake_up(wr_waitp, ret ? -ret : 0);
2982
2983 return (0);
2984}
2985
2986static int fw6_cqe_handler(struct adapter *sc, const __be64 *rpl)
2987{
2988 struct cqe_list_entry *cle;
2989 unsigned long flag;
2990
2991 cle = malloc(sizeof(*cle), M_CXGBE, M_NOWAIT);
2992 cle->rhp = sc->iwarp_softc;
2993 cle->err_cqe = *(const struct t4_cqe *)(&rpl[0]);
2994
2995 spin_lock_irqsave(&err_cqe_lock, flag);
2996 list_add_tail(&cle->entry, &err_cqe_list);
2997 queue_work(c4iw_taskq, &c4iw_task);
2998 spin_unlock_irqrestore(&err_cqe_lock, flag);
2999
3000 return (0);
3001}
3002
3003static int
3004process_terminate(struct c4iw_ep *ep)
3005{
3006 struct c4iw_qp_attributes attrs = {0};
3007
3008 CTR2(KTR_IW_CXGBE, "%s:tB %p %d", __func__, ep);
3009
3010 if (ep && ep->com.qp) {
3011
3012 printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n",
3013 ep->hwtid, ep->com.qp->wq.sq.qid);
3014 attrs.next_state = C4IW_QP_STATE_TERMINATE;
3015 c4iw_modify_qp(ep->com.dev, ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, &attrs,
3016 1);
3017 } else
3018 printk(KERN_WARNING MOD "TERM received tid %u no ep/qp\n",
3019 ep->hwtid);
3020 CTR2(KTR_IW_CXGBE, "%s:tE %p %d", __func__, ep);
3021
3022 return 0;
3023}
3024
3025int __init c4iw_cm_init(void)
3026{
3027
3028 t4_register_cpl_handler(CPL_RDMA_TERMINATE, terminate);
3029 t4_register_fw_msg_handler(FW6_TYPE_WR_RPL, fw6_wr_rpl);
3030 t4_register_fw_msg_handler(FW6_TYPE_CQE, fw6_cqe_handler);
3031 t4_register_an_handler(c4iw_ev_handler);
3032
3033 TAILQ_INIT(&req_list);
3034 spin_lock_init(&req_lock);
3035 INIT_LIST_HEAD(&err_cqe_list);
3036 spin_lock_init(&err_cqe_lock);
3037
3038 INIT_WORK(&c4iw_task, process_req);
3039
3040 c4iw_taskq = create_singlethread_workqueue("iw_cxgbe");
3041 if (!c4iw_taskq)
3042 return -ENOMEM;
3043
3044 return 0;
3045}
3046
3047void __exit c4iw_cm_term(void)
3048{
3049 WARN_ON(!TAILQ_EMPTY(&req_list));
3050 WARN_ON(!list_empty(&err_cqe_list));
3051 flush_workqueue(c4iw_taskq);
3052 destroy_workqueue(c4iw_taskq);
3053
3054 t4_register_cpl_handler(CPL_RDMA_TERMINATE, NULL);
3055 t4_register_fw_msg_handler(FW6_TYPE_WR_RPL, NULL);
3056 t4_register_fw_msg_handler(FW6_TYPE_CQE, NULL);
3057 t4_register_an_handler(NULL);
3058}
3059#endif
t4_register_an_handler
void t4_register_an_handler(an_handler_t)
Definition: t4_sge.c:357
t4_register_cpl_handler
void t4_register_cpl_handler(int, cpl_handler_t)
Definition: t4_sge.c:387
ifp
struct ifnet * ifp
Definition: adapter.h:2
TAILQ_HEAD
TAILQ_HEAD(wrq_incomplete_wrs, wrq_cookie) incomplete_wrs
iq
struct sge_iq iq
Definition: adapter.h:0
t4_register_fw_msg_handler
void t4_register_fw_msg_handler(int, fw_msg_handler_t)
Definition: t4_sge.c:368
__FBSDID
__FBSDID("$FreeBSD$")
for_each_port
#define for_each_port(adapter, iter)
Definition: common.h:468
min_t
#define min_t(type, _a, _b)
Definition: cudbg_lib.h:34
LIST_HEAD
LIST_HEAD(cxgbei_cmp_head, cxgbei_cmp)
iw_cxgbe.h
C4IW_EVENT_SOCKET
#define C4IW_EVENT_SOCKET
Definition: iw_cxgbe.h:602
inline_threshold
int inline_threshold
c4iw_create_listen
int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog)
use_dsgl
int use_dsgl
c4iw_wake_up
static void c4iw_wake_up(struct c4iw_wr_wait *wr_waitp, int ret)
Definition: iw_cxgbe.h:203
MPA_REJECT
#define MPA_REJECT
Definition: iw_cxgbe.h:670
c4iw_reject_cr
int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
RELEASE_RESOURCES
@ RELEASE_RESOURCES
Definition: iw_cxgbe.h:785
QP_REFERENCED
@ QP_REFERENCED
Definition: iw_cxgbe.h:788
CLOSE_SENT
@ CLOSE_SENT
Definition: iw_cxgbe.h:786
TIMEOUT
@ TIMEOUT
Definition: iw_cxgbe.h:787
MPA_V2_RDMA_WRITE_RTR
#define MPA_V2_RDMA_WRITE_RTR
Definition: iw_cxgbe.h:677
to_listen_ep
static struct c4iw_listen_ep * to_listen_ep(struct iw_cm_id *cm_id)
Definition: iw_cxgbe.h:883
c4iw_modify_qp
int c4iw_modify_qp(struct c4iw_dev *rhp, struct c4iw_qp *qhp, enum c4iw_qp_attr_mask mask, struct c4iw_qp_attributes *attrs, int internal)
to_ep
static struct c4iw_ep * to_ep(struct iw_cm_id *cm_id)
Definition: iw_cxgbe.h:878
cur_max_read_depth
static int cur_max_read_depth(struct c4iw_dev *dev)
Definition: iw_cxgbe.h:361
c4iw_put_ep
#define c4iw_put_ep(ep)
Definition: iw_cxgbe.h:681
c4iw_max_read_depth
int c4iw_max_read_depth
get_qhp
static struct c4iw_qp * get_qhp(struct c4iw_dev *rhp, u32 qpid)
Definition: iw_cxgbe.h:296
c4iw_ev_handler
int c4iw_ev_handler(struct sge_iq *, const struct rsp_ctrl *)
MPA_V2_PEER2PEER_MODEL
#define MPA_V2_PEER2PEER_MODEL
Definition: iw_cxgbe.h:675
T4_FATAL_ERROR
@ T4_FATAL_ERROR
Definition: iw_cxgbe.h:121
MPA_MAX_PRIVATE_DATA
#define MPA_MAX_PRIVATE_DATA
Definition: iw_cxgbe.h:668
MPA_ENHANCED_RDMA_CONN
#define MPA_ENHANCED_RDMA_CONN
Definition: iw_cxgbe.h:669
MPA_V2_IRD_ORD_MASK
#define MPA_V2_IRD_ORD_MASK
Definition: iw_cxgbe.h:679
c4iw_ep_state
c4iw_ep_state
Definition: iw_cxgbe.h:767
CONNECTING
@ CONNECTING
Definition: iw_cxgbe.h:770
MPA_REP_SENT
@ MPA_REP_SENT
Definition: iw_cxgbe.h:774
ABORTING
@ ABORTING
Definition: iw_cxgbe.h:776
DEAD
@ DEAD
Definition: iw_cxgbe.h:779
LISTEN
@ LISTEN
Definition: iw_cxgbe.h:769
MORIBUND
@ MORIBUND
Definition: iw_cxgbe.h:778
FPDU_MODE
@ FPDU_MODE
Definition: iw_cxgbe.h:775
MPA_REQ_SENT
@ MPA_REQ_SENT
Definition: iw_cxgbe.h:772
MPA_REQ_WAIT
@ MPA_REQ_WAIT
Definition: iw_cxgbe.h:771
CLOSING
@ CLOSING
Definition: iw_cxgbe.h:777
MPA_REQ_RCVD
@ MPA_REQ_RCVD
Definition: iw_cxgbe.h:773
c4iw_cm_init
int __init c4iw_cm_init(void)
__c4iw_ep_disconnect
int __c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp)
MPA_KEY_REP
#define MPA_KEY_REP
Definition: iw_cxgbe.h:666
c4iw_connect
int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
MPA_V2_RDMA_READ_RTR
#define MPA_V2_RDMA_READ_RTR
Definition: iw_cxgbe.h:678
MPA_MARKERS
#define MPA_MARKERS
Definition: iw_cxgbe.h:672
to_c4iw_dev
static struct c4iw_dev * to_c4iw_dev(struct ib_device *ibdev)
Definition: iw_cxgbe.h:281
c4iw_fatal_error
static int c4iw_fatal_error(struct c4iw_rdev *rdev)
Definition: iw_cxgbe.h:172
LAYER_MPA
@ LAYER_MPA
Definition: iw_cxgbe.h:721
DDP_LLP
@ DDP_LLP
Definition: iw_cxgbe.h:728
c4iw_qp_rem_ref
void c4iw_qp_rem_ref(struct ib_qp *qp)
ULP_REJECT
@ ULP_REJECT
Definition: iw_cxgbe.h:803
DISCONN_UPCALL
@ DISCONN_UPCALL
Definition: iw_cxgbe.h:809
CLOSE_CON_RPL
@ CLOSE_CON_RPL
Definition: iw_cxgbe.h:815
CONNREQ_UPCALL
@ CONNREQ_UPCALL
Definition: iw_cxgbe.h:807
ULP_ACCEPT
@ ULP_ACCEPT
Definition: iw_cxgbe.h:802
EP_DISC_CLOSE
@ EP_DISC_CLOSE
Definition: iw_cxgbe.h:810
CM_ID_DEREFED
@ CM_ID_DEREFED
Definition: iw_cxgbe.h:820
ABORT_CONN
@ ABORT_CONN
Definition: iw_cxgbe.h:808
EP_DISC_ABORT
@ EP_DISC_ABORT
Definition: iw_cxgbe.h:811
ESTAB_UPCALL
@ ESTAB_UPCALL
Definition: iw_cxgbe.h:800
EP_DISC_FAIL
@ EP_DISC_FAIL
Definition: iw_cxgbe.h:816
CONN_RPL_UPCALL
@ CONN_RPL_UPCALL
Definition: iw_cxgbe.h:812
QP_REFED
@ QP_REFED
Definition: iw_cxgbe.h:817
QP_DEREFED
@ QP_DEREFED
Definition: iw_cxgbe.h:818
ABORT_UPCALL
@ ABORT_UPCALL
Definition: iw_cxgbe.h:799
CM_ID_REFED
@ CM_ID_REFED
Definition: iw_cxgbe.h:819
CLOSE_UPCALL
@ CLOSE_UPCALL
Definition: iw_cxgbe.h:801
TIMEDOUT
@ TIMEDOUT
Definition: iw_cxgbe.h:804
c4iw_destroy_listen
int c4iw_destroy_listen(struct iw_cm_id *cm_id)
C4IW_EVENT_TERM
#define C4IW_EVENT_TERM
Definition: iw_cxgbe.h:604
C4IW_EVENT_TIMEOUT
#define C4IW_EVENT_TIMEOUT
Definition: iw_cxgbe.h:603
C4IW_QP_STATE_TERMINATE
@ C4IW_QP_STATE_TERMINATE
Definition: iw_cxgbe.h:593
C4IW_QP_STATE_ERROR
@ C4IW_QP_STATE_ERROR
Definition: iw_cxgbe.h:592
C4IW_QP_STATE_CLOSING
@ C4IW_QP_STATE_CLOSING
Definition: iw_cxgbe.h:594
C4IW_QP_STATE_IDLE
@ C4IW_QP_STATE_IDLE
Definition: iw_cxgbe.h:590
C4IW_QP_STATE_RTS
@ C4IW_QP_STATE_RTS
Definition: iw_cxgbe.h:591
c4iw_ev_dispatch
void c4iw_ev_dispatch(struct c4iw_dev *dev, struct t4_cqe *err_cqe)
MOD
#define MOD
Definition: iw_cxgbe.h:67
MPA_INSUFF_IRD
@ MPA_INSUFF_IRD
Definition: iw_cxgbe.h:763
MPA_NOMATCH_RTR
@ MPA_NOMATCH_RTR
Definition: iw_cxgbe.h:764
c4iw_qp_attr_mask
c4iw_qp_attr_mask
Definition: iw_cxgbe.h:560
C4IW_QP_ATTR_MAX_IRD
@ C4IW_QP_ATTR_MAX_IRD
Definition: iw_cxgbe.h:568
C4IW_QP_ATTR_MPA_ATTR
@ C4IW_QP_ATTR_MPA_ATTR
Definition: iw_cxgbe.h:571
C4IW_QP_ATTR_NEXT_STATE
@ C4IW_QP_ATTR_NEXT_STATE
Definition: iw_cxgbe.h:561
C4IW_QP_ATTR_MAX_ORD
@ C4IW_QP_ATTR_MAX_ORD
Definition: iw_cxgbe.h:567
C4IW_QP_ATTR_LLP_STREAM_HANDLE
@ C4IW_QP_ATTR_LLP_STREAM_HANDLE
Definition: iw_cxgbe.h:569
c4iw_init_wr_wait
static void c4iw_init_wr_wait(struct c4iw_wr_wait *wr_waitp)
Definition: iw_cxgbe.h:197
PDBG
#define PDBG(fmt, args...)
Definition: iw_cxgbe.h:74
c4iw_cm_term
void __exit c4iw_cm_term(void)
c4iw_get_ep
#define c4iw_get_ep(ep)
Definition: iw_cxgbe.h:688
c4iw_debug
int c4iw_debug
c4iw_qp_add_ref
void c4iw_qp_add_ref(struct ib_qp *qp)
KTR_IW_CXGBE
#define KTR_IW_CXGBE
Definition: iw_cxgbe.h:68
MPA_CRC
#define MPA_CRC
Definition: iw_cxgbe.h:671
c4iw_accept_cr
int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
c4iw_ep_redirect
int c4iw_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new, struct l2t_entry *l2t)
MPA_KEY_REQ
#define MPA_KEY_REQ
Definition: iw_cxgbe.h:665
c4iw_ep_disconnect
int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp)
_c4iw_free_ep
void _c4iw_free_ep(struct kref *kref)
__be64
uint64_t __be64
Definition: osdep.h:70
u8
uint8_t u8
Definition: osdep.h:59
u16
uint16_t u16
Definition: osdep.h:60
container_of
#define container_of(p, s, f)
Definition: osdep.h:95
u32
uint32_t u32
Definition: osdep.h:61
adapter_params::max_ordird_qp
unsigned int max_ordird_qp
Definition: common.h:401
adapter::iwarp_softc
void * iwarp_softc
Definition: adapter.h:926
adapter::params
struct adapter_params params
Definition: adapter.h:958
adapter::port
struct port_info * port[MAX_NPORTS]
Definition: adapter.h:912
c4iw_dev
Definition: iw_cxgbe.h:268
c4iw_dev::rdev
struct c4iw_rdev rdev
Definition: iw_cxgbe.h:271
c4iw_ep_common
Definition: iw_cxgbe.h:823
c4iw_ep_common::rpl_err
int rpl_err
Definition: iw_cxgbe.h:836
c4iw_ep_common::cm_id
struct iw_cm_id * cm_id
Definition: iw_cxgbe.h:825
c4iw_ep_common::ep_events
int ep_events
Definition: iw_cxgbe.h:840
c4iw_ep_common::flags
unsigned long flags
Definition: iw_cxgbe.h:834
c4iw_ep_common::history
unsigned long history
Definition: iw_cxgbe.h:835
c4iw_ep_common::so
struct socket * so
Definition: iw_cxgbe.h:839
c4iw_ep_common::local_addr
struct sockaddr_storage local_addr
Definition: iw_cxgbe.h:831
c4iw_ep_common::kref
struct kref kref
Definition: iw_cxgbe.h:829
c4iw_ep_common::mutex
struct mutex mutex
Definition: iw_cxgbe.h:830
c4iw_ep_common::wr_wait
struct c4iw_wr_wait wr_wait
Definition: iw_cxgbe.h:833
c4iw_ep_common::qp
struct c4iw_qp * qp
Definition: iw_cxgbe.h:826
c4iw_ep_common::dev
struct c4iw_dev * dev
Definition: iw_cxgbe.h:827
c4iw_ep_common::remote_addr
struct sockaddr_storage remote_addr
Definition: iw_cxgbe.h:832
c4iw_ep_common::thread
struct thread * thread
Definition: iw_cxgbe.h:838
c4iw_ep_common::state
enum c4iw_ep_state state
Definition: iw_cxgbe.h:828
c4iw_ep
Definition: iw_cxgbe.h:851
c4iw_ep::l2t
struct l2t_entry * l2t
Definition: iw_cxgbe.h:859
c4iw_ep::hwtid
u32 hwtid
Definition: iw_cxgbe.h:856
c4iw_ep::snd_seq
u32 snd_seq
Definition: iw_cxgbe.h:857
c4iw_ep::mpa_attr
struct c4iw_mpa_attributes mpa_attr
Definition: iw_cxgbe.h:861
c4iw_ep::mpa_pkt
u8 mpa_pkt[sizeof(struct mpa_message)+MPA_MAX_PRIVATE_DATA]
Definition: iw_cxgbe.h:862
c4iw_ep::parent_ep
struct c4iw_listen_ep * parent_ep
Definition: iw_cxgbe.h:853
c4iw_ep::retry_with_mpa_v1
u8 retry_with_mpa_v1
Definition: iw_cxgbe.h:874
c4iw_ep::ird
u32 ird
Definition: iw_cxgbe.h:864
c4iw_ep::mpa_pkt_len
unsigned int mpa_pkt_len
Definition: iw_cxgbe.h:863
c4iw_ep::dst
struct dst_entry * dst
Definition: iw_cxgbe.h:860
c4iw_ep::plen
u16 plen
Definition: iw_cxgbe.h:869
c4iw_ep::timer
struct timer_list timer
Definition: iw_cxgbe.h:854
c4iw_ep::ord
u32 ord
Definition: iw_cxgbe.h:865
c4iw_ep::com
struct c4iw_ep_common com
Definition: iw_cxgbe.h:852
c4iw_ep::tried_with_mpa_v1
u8 tried_with_mpa_v1
Definition: iw_cxgbe.h:875
c4iw_ep::tos
u8 tos
Definition: iw_cxgbe.h:873
c4iw_ep::rcv_seq
u32 rcv_seq
Definition: iw_cxgbe.h:858
c4iw_listen_ep
Definition: iw_cxgbe.h:843
c4iw_listen_ep::com
struct c4iw_ep_common com
Definition: iw_cxgbe.h:844
c4iw_listen_ep::backlog
int backlog
Definition: iw_cxgbe.h:846
c4iw_listen_ep::listen_ep_list
struct list_head listen_ep_list
Definition: iw_cxgbe.h:847
c4iw_mpa_attributes::enhanced_rdma_conn
u8 enhanced_rdma_conn
Definition: iw_cxgbe.h:444
c4iw_mpa_attributes::p2p_type
u8 p2p_type
Definition: iw_cxgbe.h:446
c4iw_mpa_attributes::initiator
u8 initiator
Definition: iw_cxgbe.h:440
c4iw_mpa_attributes::xmit_marker_enabled
u8 xmit_marker_enabled
Definition: iw_cxgbe.h:442
c4iw_mpa_attributes::recv_marker_enabled
u8 recv_marker_enabled
Definition: iw_cxgbe.h:441
c4iw_mpa_attributes::crc_enabled
u8 crc_enabled
Definition: iw_cxgbe.h:443
c4iw_mpa_attributes::version
u8 version
Definition: iw_cxgbe.h:445
c4iw_qp_attributes
Definition: iw_cxgbe.h:449
c4iw_qp_attributes::max_ird
u32 max_ird
Definition: iw_cxgbe.h:463
c4iw_qp_attributes::state
u32 state
Definition: iw_cxgbe.h:457
c4iw_qp_attributes::max_ord
u32 max_ord
Definition: iw_cxgbe.h:462
c4iw_qp_attributes::ecode
u8 ecode
Definition: iw_cxgbe.h:472
c4iw_qp_attributes::send_term
u8 send_term
Definition: iw_cxgbe.h:475
c4iw_qp_attributes::mpa_attr
struct c4iw_mpa_attributes mpa_attr
Definition: iw_cxgbe.h:469
c4iw_qp_attributes::layer_etype
u8 layer_etype
Definition: iw_cxgbe.h:471
c4iw_qp_attributes::next_state
u32 next_state
Definition: iw_cxgbe.h:465
c4iw_qp_attributes::llp_stream_handle
struct c4iw_ep * llp_stream_handle
Definition: iw_cxgbe.h:470
c4iw_qp
Definition: iw_cxgbe.h:486
c4iw_qp::rhp
struct c4iw_dev * rhp
Definition: iw_cxgbe.h:488
c4iw_qp::wq
struct t4_wq wq
Definition: iw_cxgbe.h:491
c4iw_qp::ibqp
struct ib_qp ibqp
Definition: iw_cxgbe.h:487
c4iw_qp::ep
struct c4iw_ep * ep
Definition: iw_cxgbe.h:489
c4iw_rdev
Definition: iw_cxgbe.h:152
c4iw_rdev::adap
struct adapter * adap
Definition: iw_cxgbe.h:153
c4iw_rdev::flags
u32 flags
Definition: iw_cxgbe.h:162
c4iw_wr_wait
Definition: iw_cxgbe.h:192
c4iw_wr_wait::ret
int ret
Definition: iw_cxgbe.h:193
cpl_rdma_terminate
Definition: t4_msg.h:2616
cpl_set_tcb_rpl
Definition: t4_msg.h:987
l2t_entry
Definition: t4_l2t.h:63
mpa_message
Definition: iw_cxgbe.h:696
mpa_message::key
u8 key[16]
Definition: iw_cxgbe.h:697
mpa_message::private_data
u8 private_data[0]
Definition: iw_cxgbe.h:701
mpa_message::private_data_size
__be16 private_data_size
Definition: iw_cxgbe.h:700
mpa_message::flags
u8 flags
Definition: iw_cxgbe.h:698
mpa_message::revision
u8 revision
Definition: iw_cxgbe.h:699
mpa_v2_conn_params
Definition: iw_cxgbe.h:704
mpa_v2_conn_params::ord
__be16 ord
Definition: iw_cxgbe.h:706
mpa_v2_conn_params::ird
__be16 ird
Definition: iw_cxgbe.h:705
port_info
Definition: adapter.h:304
port_info::vi
struct vi_info * vi
Definition: adapter.h:308
rss_header
Definition: t4_msg.h:372
sge_iq
Definition: adapter.h:419
sge_iq::adapter
struct adapter * adapter
Definition: adapter.h:422
t4_cqe
Definition: t4.h:188
t4_sq::qid
u32 qid
Definition: t4.h:325
t4_wq::sq
struct t4_sq sq
Definition: t4.h:363
toepcb
Definition: t4_tom.h:182
toepcb::tid
int tid
Definition: t4_tom.h:195
toepcb::inp
struct inpcb * inp
Definition: t4_tom.h:184
vi_info::ifp
struct ifnet * ifp
Definition: adapter.h:203
port
int port
Definition: t4_if.m:63
CPL_RDMA_TERMINATE
@ CPL_RDMA_TERMINATE
Definition: t4_msg.h:125
FW6_TYPE_WR_RPL
@ FW6_TYPE_WR_RPL
Definition: t4_msg.h:2810
FW6_TYPE_CQE
@ FW6_TYPE_CQE
Definition: t4_msg.h:2811
GET_TID
#define GET_TID(cmd)
Definition: t4_msg.h:330
SYSCTL_INT
SYSCTL_INT(_hw_cxgbe, OID_AUTO, fl_pktshift, CTLFLAG_RDTUN, &fl_pktshift, 0, "payload DMA offset in rx buffer (bytes)")
t4_tom.h
lookup_tid
void * lookup_tid(struct adapter *, int)
FW_RI_INIT_P2PTYPE_READ_REQ
@ FW_RI_INIT_P2PTYPE_READ_REQ
Definition: t4fw_interface.h:2085
FW_RI_INIT_P2PTYPE_DISABLED
@ FW_RI_INIT_P2PTYPE_DISABLED
Definition: t4fw_interface.h:2090
FW_RI_INIT_P2PTYPE_RDMA_WRITE
@ FW_RI_INIT_P2PTYPE_RDMA_WRITE
Definition: t4fw_interface.h:2084