2 * Copyright (c) 2009-2014 Chelsio, Inc. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 #include <linux/module.h>
33 #include <linux/list.h>
34 #include <linux/workqueue.h>
35 #include <linux/skbuff.h>
36 #include <linux/timer.h>
37 #include <linux/notifier.h>
38 #include <linux/inetdevice.h>
40 #include <linux/tcp.h>
41 #include <linux/if_vlan.h>
43 #include <net/neighbour.h>
44 #include <net/netevent.h>
45 #include <net/route.h>
47 #include <net/ip6_route.h>
48 #include <net/addrconf.h>
50 #include <rdma/ib_addr.h>
52 #include <libcxgb_cm.h>
56 static char *states
[] = {
73 module_param(nocong
, int, 0644);
74 MODULE_PARM_DESC(nocong
, "Turn of congestion control (default=0)");
76 static int enable_ecn
;
77 module_param(enable_ecn
, int, 0644);
78 MODULE_PARM_DESC(enable_ecn
, "Enable ECN (default=0/disabled)");
80 static int dack_mode
= 1;
81 module_param(dack_mode
, int, 0644);
82 MODULE_PARM_DESC(dack_mode
, "Delayed ack mode (default=1)");
84 uint c4iw_max_read_depth
= 32;
85 module_param(c4iw_max_read_depth
, int, 0644);
86 MODULE_PARM_DESC(c4iw_max_read_depth
,
87 "Per-connection max ORD/IRD (default=32)");
89 static int enable_tcp_timestamps
;
90 module_param(enable_tcp_timestamps
, int, 0644);
91 MODULE_PARM_DESC(enable_tcp_timestamps
, "Enable tcp timestamps (default=0)");
93 static int enable_tcp_sack
;
94 module_param(enable_tcp_sack
, int, 0644);
95 MODULE_PARM_DESC(enable_tcp_sack
, "Enable tcp SACK (default=0)");
97 static int enable_tcp_window_scaling
= 1;
98 module_param(enable_tcp_window_scaling
, int, 0644);
99 MODULE_PARM_DESC(enable_tcp_window_scaling
,
100 "Enable tcp window scaling (default=1)");
102 static int peer2peer
= 1;
103 module_param(peer2peer
, int, 0644);
104 MODULE_PARM_DESC(peer2peer
, "Support peer2peer ULPs (default=1)");
106 static int p2p_type
= FW_RI_INIT_P2PTYPE_READ_REQ
;
107 module_param(p2p_type
, int, 0644);
108 MODULE_PARM_DESC(p2p_type
, "RDMAP opcode to use for the RTR message: "
109 "1=RDMA_READ 0=RDMA_WRITE (default 1)");
111 static int ep_timeout_secs
= 60;
112 module_param(ep_timeout_secs
, int, 0644);
113 MODULE_PARM_DESC(ep_timeout_secs
, "CM Endpoint operation timeout "
114 "in seconds (default=60)");
116 static int mpa_rev
= 2;
117 module_param(mpa_rev
, int, 0644);
118 MODULE_PARM_DESC(mpa_rev
, "MPA Revision, 0 supports amso1100, "
119 "1 is RFC5044 spec compliant, 2 is IETF MPA Peer Connect Draft"
120 " compliant (default=2)");
122 static int markers_enabled
;
123 module_param(markers_enabled
, int, 0644);
124 MODULE_PARM_DESC(markers_enabled
, "Enable MPA MARKERS (default(0)=disabled)");
126 static int crc_enabled
= 1;
127 module_param(crc_enabled
, int, 0644);
128 MODULE_PARM_DESC(crc_enabled
, "Enable MPA CRC (default(1)=enabled)");
130 static int rcv_win
= 256 * 1024;
131 module_param(rcv_win
, int, 0644);
132 MODULE_PARM_DESC(rcv_win
, "TCP receive window in bytes (default=256KB)");
134 static int snd_win
= 128 * 1024;
135 module_param(snd_win
, int, 0644);
136 MODULE_PARM_DESC(snd_win
, "TCP send window in bytes (default=128KB)");
138 static struct workqueue_struct
*workq
;
140 static struct sk_buff_head rxq
;
142 static struct sk_buff
*get_skb(struct sk_buff
*skb
, int len
, gfp_t gfp
);
143 static void ep_timeout(struct timer_list
*t
);
144 static void connect_reply_upcall(struct c4iw_ep
*ep
, int status
);
145 static int sched(struct c4iw_dev
*dev
, struct sk_buff
*skb
);
147 static LIST_HEAD(timeout_list
);
148 static spinlock_t timeout_lock
;
150 static void deref_cm_id(struct c4iw_ep_common
*epc
)
152 epc
->cm_id
->rem_ref(epc
->cm_id
);
154 set_bit(CM_ID_DEREFED
, &epc
->history
);
157 static void ref_cm_id(struct c4iw_ep_common
*epc
)
159 set_bit(CM_ID_REFED
, &epc
->history
);
160 epc
->cm_id
->add_ref(epc
->cm_id
);
163 static void deref_qp(struct c4iw_ep
*ep
)
165 c4iw_qp_rem_ref(&ep
->com
.qp
->ibqp
);
166 clear_bit(QP_REFERENCED
, &ep
->com
.flags
);
167 set_bit(QP_DEREFED
, &ep
->com
.history
);
170 static void ref_qp(struct c4iw_ep
*ep
)
172 set_bit(QP_REFERENCED
, &ep
->com
.flags
);
173 set_bit(QP_REFED
, &ep
->com
.history
);
174 c4iw_qp_add_ref(&ep
->com
.qp
->ibqp
);
177 static void start_ep_timer(struct c4iw_ep
*ep
)
179 pr_debug("ep %p\n", ep
);
180 if (timer_pending(&ep
->timer
)) {
181 pr_err("%s timer already started! ep %p\n",
185 clear_bit(TIMEOUT
, &ep
->com
.flags
);
186 c4iw_get_ep(&ep
->com
);
187 ep
->timer
.expires
= jiffies
+ ep_timeout_secs
* HZ
;
188 add_timer(&ep
->timer
);
191 static int stop_ep_timer(struct c4iw_ep
*ep
)
193 pr_debug("ep %p stopping\n", ep
);
194 del_timer_sync(&ep
->timer
);
195 if (!test_and_set_bit(TIMEOUT
, &ep
->com
.flags
)) {
196 c4iw_put_ep(&ep
->com
);
202 static int c4iw_l2t_send(struct c4iw_rdev
*rdev
, struct sk_buff
*skb
,
203 struct l2t_entry
*l2e
)
207 if (c4iw_fatal_error(rdev
)) {
209 pr_err("%s - device in error state - dropping\n", __func__
);
212 error
= cxgb4_l2t_send(rdev
->lldi
.ports
[0], skb
, l2e
);
215 else if (error
== NET_XMIT_DROP
)
217 return error
< 0 ? error
: 0;
220 int c4iw_ofld_send(struct c4iw_rdev
*rdev
, struct sk_buff
*skb
)
224 if (c4iw_fatal_error(rdev
)) {
226 pr_err("%s - device in error state - dropping\n", __func__
);
229 error
= cxgb4_ofld_send(rdev
->lldi
.ports
[0], skb
);
232 return error
< 0 ? error
: 0;
235 static void release_tid(struct c4iw_rdev
*rdev
, u32 hwtid
, struct sk_buff
*skb
)
237 u32 len
= roundup(sizeof(struct cpl_tid_release
), 16);
239 skb
= get_skb(skb
, len
, GFP_KERNEL
);
243 cxgb_mk_tid_release(skb
, len
, hwtid
, 0);
244 c4iw_ofld_send(rdev
, skb
);
248 static void set_emss(struct c4iw_ep
*ep
, u16 opt
)
250 ep
->emss
= ep
->com
.dev
->rdev
.lldi
.mtus
[TCPOPT_MSS_G(opt
)] -
251 ((AF_INET
== ep
->com
.remote_addr
.ss_family
) ?
252 sizeof(struct iphdr
) : sizeof(struct ipv6hdr
)) -
253 sizeof(struct tcphdr
);
255 if (TCPOPT_TSTAMP_G(opt
))
256 ep
->emss
-= round_up(TCPOLEN_TIMESTAMP
, 4);
260 pr_debug("Warning: misaligned mtu idx %u mss %u emss=%u\n",
261 TCPOPT_MSS_G(opt
), ep
->mss
, ep
->emss
);
262 pr_debug("mss_idx %u mss %u emss=%u\n", TCPOPT_MSS_G(opt
), ep
->mss
,
266 static enum c4iw_ep_state
state_read(struct c4iw_ep_common
*epc
)
268 enum c4iw_ep_state state
;
270 mutex_lock(&epc
->mutex
);
272 mutex_unlock(&epc
->mutex
);
276 static void __state_set(struct c4iw_ep_common
*epc
, enum c4iw_ep_state
new)
281 static void state_set(struct c4iw_ep_common
*epc
, enum c4iw_ep_state
new)
283 mutex_lock(&epc
->mutex
);
284 pr_debug("%s -> %s\n", states
[epc
->state
], states
[new]);
285 __state_set(epc
, new);
286 mutex_unlock(&epc
->mutex
);
290 static int alloc_ep_skb_list(struct sk_buff_head
*ep_skb_list
, int size
)
296 len
= roundup(sizeof(union cpl_wr_size
), 16);
297 for (i
= 0; i
< size
; i
++) {
298 skb
= alloc_skb(len
, GFP_KERNEL
);
301 skb_queue_tail(ep_skb_list
, skb
);
305 skb_queue_purge(ep_skb_list
);
309 static void *alloc_ep(int size
, gfp_t gfp
)
311 struct c4iw_ep_common
*epc
;
313 epc
= kzalloc(size
, gfp
);
315 epc
->wr_waitp
= c4iw_alloc_wr_wait(gfp
);
316 if (!epc
->wr_waitp
) {
321 kref_init(&epc
->kref
);
322 mutex_init(&epc
->mutex
);
323 c4iw_init_wr_wait(epc
->wr_waitp
);
325 pr_debug("alloc ep %p\n", epc
);
330 static void remove_ep_tid(struct c4iw_ep
*ep
)
334 xa_lock_irqsave(&ep
->com
.dev
->hwtids
, flags
);
335 __xa_erase(&ep
->com
.dev
->hwtids
, ep
->hwtid
);
336 if (xa_empty(&ep
->com
.dev
->hwtids
))
337 wake_up(&ep
->com
.dev
->wait
);
338 xa_unlock_irqrestore(&ep
->com
.dev
->hwtids
, flags
);
341 static int insert_ep_tid(struct c4iw_ep
*ep
)
346 xa_lock_irqsave(&ep
->com
.dev
->hwtids
, flags
);
347 err
= __xa_insert(&ep
->com
.dev
->hwtids
, ep
->hwtid
, ep
, GFP_KERNEL
);
348 xa_unlock_irqrestore(&ep
->com
.dev
->hwtids
, flags
);
354 * Atomically lookup the ep ptr given the tid and grab a reference on the ep.
356 static struct c4iw_ep
*get_ep_from_tid(struct c4iw_dev
*dev
, unsigned int tid
)
361 xa_lock_irqsave(&dev
->hwtids
, flags
);
362 ep
= xa_load(&dev
->hwtids
, tid
);
364 c4iw_get_ep(&ep
->com
);
365 xa_unlock_irqrestore(&dev
->hwtids
, flags
);
370 * Atomically lookup the ep ptr given the stid and grab a reference on the ep.
372 static struct c4iw_listen_ep
*get_ep_from_stid(struct c4iw_dev
*dev
,
375 struct c4iw_listen_ep
*ep
;
378 xa_lock_irqsave(&dev
->stids
, flags
);
379 ep
= xa_load(&dev
->stids
, stid
);
381 c4iw_get_ep(&ep
->com
);
382 xa_unlock_irqrestore(&dev
->stids
, flags
);
386 void _c4iw_free_ep(struct kref
*kref
)
390 ep
= container_of(kref
, struct c4iw_ep
, com
.kref
);
391 pr_debug("ep %p state %s\n", ep
, states
[ep
->com
.state
]);
392 if (test_bit(QP_REFERENCED
, &ep
->com
.flags
))
394 if (test_bit(RELEASE_RESOURCES
, &ep
->com
.flags
)) {
395 if (ep
->com
.remote_addr
.ss_family
== AF_INET6
) {
396 struct sockaddr_in6
*sin6
=
397 (struct sockaddr_in6
*)
401 ep
->com
.dev
->rdev
.lldi
.ports
[0],
402 (const u32
*)&sin6
->sin6_addr
.s6_addr
,
405 cxgb4_remove_tid(ep
->com
.dev
->rdev
.lldi
.tids
, 0, ep
->hwtid
,
406 ep
->com
.local_addr
.ss_family
);
407 dst_release(ep
->dst
);
408 cxgb4_l2t_release(ep
->l2t
);
409 kfree_skb(ep
->mpa_skb
);
411 if (!skb_queue_empty(&ep
->com
.ep_skb_list
))
412 skb_queue_purge(&ep
->com
.ep_skb_list
);
413 c4iw_put_wr_wait(ep
->com
.wr_waitp
);
417 static void release_ep_resources(struct c4iw_ep
*ep
)
419 set_bit(RELEASE_RESOURCES
, &ep
->com
.flags
);
422 * If we have a hwtid, then remove it from the idr table
423 * so lookups will no longer find this endpoint. Otherwise
424 * we have a race where one thread finds the ep ptr just
425 * before the other thread is freeing the ep memory.
429 c4iw_put_ep(&ep
->com
);
432 static int status2errno(int status
)
437 case CPL_ERR_CONN_RESET
:
439 case CPL_ERR_ARP_MISS
:
440 return -EHOSTUNREACH
;
441 case CPL_ERR_CONN_TIMEDOUT
:
443 case CPL_ERR_TCAM_FULL
:
445 case CPL_ERR_CONN_EXIST
:
453 * Try and reuse skbs already allocated...
455 static struct sk_buff
*get_skb(struct sk_buff
*skb
, int len
, gfp_t gfp
)
457 if (skb
&& !skb_is_nonlinear(skb
) && !skb_cloned(skb
)) {
460 skb_reset_transport_header(skb
);
462 skb
= alloc_skb(len
, gfp
);
466 t4_set_arp_err_handler(skb
, NULL
, NULL
);
470 static struct net_device
*get_real_dev(struct net_device
*egress_dev
)
472 return rdma_vlan_dev_real_dev(egress_dev
) ? : egress_dev
;
475 static void arp_failure_discard(void *handle
, struct sk_buff
*skb
)
477 pr_err("ARP failure\n");
481 static void mpa_start_arp_failure(void *handle
, struct sk_buff
*skb
)
483 pr_err("ARP failure during MPA Negotiation - Closing Connection\n");
488 FAKE_CPL_PUT_EP_SAFE
= NUM_CPL_CMDS
+ 0,
489 FAKE_CPL_PASS_PUT_EP_SAFE
= NUM_CPL_CMDS
+ 1,
492 static int _put_ep_safe(struct c4iw_dev
*dev
, struct sk_buff
*skb
)
496 ep
= *((struct c4iw_ep
**)(skb
->cb
+ 2 * sizeof(void *)));
497 release_ep_resources(ep
);
502 static int _put_pass_ep_safe(struct c4iw_dev
*dev
, struct sk_buff
*skb
)
506 ep
= *((struct c4iw_ep
**)(skb
->cb
+ 2 * sizeof(void *)));
507 c4iw_put_ep(&ep
->parent_ep
->com
);
508 release_ep_resources(ep
);
514 * Fake up a special CPL opcode and call sched() so process_work() will call
515 * _put_ep_safe() in a safe context to free the ep resources. This is needed
516 * because ARP error handlers are called in an ATOMIC context, and
517 * _c4iw_free_ep() needs to block.
519 static void queue_arp_failure_cpl(struct c4iw_ep
*ep
, struct sk_buff
*skb
,
522 struct cpl_act_establish
*rpl
= cplhdr(skb
);
524 /* Set our special ARP_FAILURE opcode */
525 rpl
->ot
.opcode
= cpl
;
528 * Save ep in the skb->cb area, after where sched() will save the dev
531 *((struct c4iw_ep
**)(skb
->cb
+ 2 * sizeof(void *))) = ep
;
532 sched(ep
->com
.dev
, skb
);
535 /* Handle an ARP failure for an accept */
536 static void pass_accept_rpl_arp_failure(void *handle
, struct sk_buff
*skb
)
538 struct c4iw_ep
*ep
= handle
;
540 pr_err("ARP failure during accept - tid %u - dropping connection\n",
543 __state_set(&ep
->com
, DEAD
);
544 queue_arp_failure_cpl(ep
, skb
, FAKE_CPL_PASS_PUT_EP_SAFE
);
548 * Handle an ARP failure for an active open.
550 static void act_open_req_arp_failure(void *handle
, struct sk_buff
*skb
)
552 struct c4iw_ep
*ep
= handle
;
554 pr_err("ARP failure during connect\n");
555 connect_reply_upcall(ep
, -EHOSTUNREACH
);
556 __state_set(&ep
->com
, DEAD
);
557 if (ep
->com
.remote_addr
.ss_family
== AF_INET6
) {
558 struct sockaddr_in6
*sin6
=
559 (struct sockaddr_in6
*)&ep
->com
.local_addr
;
560 cxgb4_clip_release(ep
->com
.dev
->rdev
.lldi
.ports
[0],
561 (const u32
*)&sin6
->sin6_addr
.s6_addr
, 1);
563 xa_erase_irq(&ep
->com
.dev
->atids
, ep
->atid
);
564 cxgb4_free_atid(ep
->com
.dev
->rdev
.lldi
.tids
, ep
->atid
);
565 queue_arp_failure_cpl(ep
, skb
, FAKE_CPL_PUT_EP_SAFE
);
569 * Handle an ARP failure for a CPL_ABORT_REQ. Change it into a no RST variant
572 static void abort_arp_failure(void *handle
, struct sk_buff
*skb
)
575 struct c4iw_ep
*ep
= handle
;
576 struct c4iw_rdev
*rdev
= &ep
->com
.dev
->rdev
;
577 struct cpl_abort_req
*req
= cplhdr(skb
);
579 pr_debug("rdev %p\n", rdev
);
580 req
->cmd
= CPL_ABORT_NO_RST
;
582 ret
= c4iw_ofld_send(rdev
, skb
);
584 __state_set(&ep
->com
, DEAD
);
585 queue_arp_failure_cpl(ep
, skb
, FAKE_CPL_PUT_EP_SAFE
);
590 static int send_flowc(struct c4iw_ep
*ep
)
592 struct fw_flowc_wr
*flowc
;
593 struct sk_buff
*skb
= skb_dequeue(&ep
->com
.ep_skb_list
);
594 u16 vlan
= ep
->l2t
->vlan
;
596 int flowclen
, flowclen16
;
601 if (vlan
== CPL_L2T_VLAN_NONE
)
606 flowclen
= offsetof(struct fw_flowc_wr
, mnemval
[nparams
]);
607 flowclen16
= DIV_ROUND_UP(flowclen
, 16);
608 flowclen
= flowclen16
* 16;
610 flowc
= __skb_put(skb
, flowclen
);
611 memset(flowc
, 0, flowclen
);
613 flowc
->op_to_nparams
= cpu_to_be32(FW_WR_OP_V(FW_FLOWC_WR
) |
614 FW_FLOWC_WR_NPARAMS_V(nparams
));
615 flowc
->flowid_len16
= cpu_to_be32(FW_WR_LEN16_V(flowclen16
) |
616 FW_WR_FLOWID_V(ep
->hwtid
));
618 flowc
->mnemval
[0].mnemonic
= FW_FLOWC_MNEM_PFNVFN
;
619 flowc
->mnemval
[0].val
= cpu_to_be32(FW_PFVF_CMD_PFN_V
620 (ep
->com
.dev
->rdev
.lldi
.pf
));
621 flowc
->mnemval
[1].mnemonic
= FW_FLOWC_MNEM_CH
;
622 flowc
->mnemval
[1].val
= cpu_to_be32(ep
->tx_chan
);
623 flowc
->mnemval
[2].mnemonic
= FW_FLOWC_MNEM_PORT
;
624 flowc
->mnemval
[2].val
= cpu_to_be32(ep
->tx_chan
);
625 flowc
->mnemval
[3].mnemonic
= FW_FLOWC_MNEM_IQID
;
626 flowc
->mnemval
[3].val
= cpu_to_be32(ep
->rss_qid
);
627 flowc
->mnemval
[4].mnemonic
= FW_FLOWC_MNEM_SNDNXT
;
628 flowc
->mnemval
[4].val
= cpu_to_be32(ep
->snd_seq
);
629 flowc
->mnemval
[5].mnemonic
= FW_FLOWC_MNEM_RCVNXT
;
630 flowc
->mnemval
[5].val
= cpu_to_be32(ep
->rcv_seq
);
631 flowc
->mnemval
[6].mnemonic
= FW_FLOWC_MNEM_SNDBUF
;
632 flowc
->mnemval
[6].val
= cpu_to_be32(ep
->snd_win
);
633 flowc
->mnemval
[7].mnemonic
= FW_FLOWC_MNEM_MSS
;
634 flowc
->mnemval
[7].val
= cpu_to_be32(ep
->emss
);
635 flowc
->mnemval
[8].mnemonic
= FW_FLOWC_MNEM_RCV_SCALE
;
636 flowc
->mnemval
[8].val
= cpu_to_be32(ep
->snd_wscale
);
639 pri
= (vlan
& VLAN_PRIO_MASK
) >> VLAN_PRIO_SHIFT
;
640 flowc
->mnemval
[9].mnemonic
= FW_FLOWC_MNEM_SCHEDCLASS
;
641 flowc
->mnemval
[9].val
= cpu_to_be32(pri
);
644 set_wr_txq(skb
, CPL_PRIORITY_DATA
, ep
->txq_idx
);
645 return c4iw_ofld_send(&ep
->com
.dev
->rdev
, skb
);
648 static int send_halfclose(struct c4iw_ep
*ep
)
650 struct sk_buff
*skb
= skb_dequeue(&ep
->com
.ep_skb_list
);
651 u32 wrlen
= roundup(sizeof(struct cpl_close_con_req
), 16);
653 pr_debug("ep %p tid %u\n", ep
, ep
->hwtid
);
657 cxgb_mk_close_con_req(skb
, wrlen
, ep
->hwtid
, ep
->txq_idx
,
658 NULL
, arp_failure_discard
);
660 return c4iw_l2t_send(&ep
->com
.dev
->rdev
, skb
, ep
->l2t
);
663 static void read_tcb(struct c4iw_ep
*ep
)
666 struct cpl_get_tcb
*req
;
667 int wrlen
= roundup(sizeof(*req
), 16);
669 skb
= get_skb(NULL
, sizeof(*req
), GFP_KERNEL
);
673 set_wr_txq(skb
, CPL_PRIORITY_CONTROL
, ep
->ctrlq_idx
);
674 req
= (struct cpl_get_tcb
*) skb_put(skb
, wrlen
);
675 memset(req
, 0, wrlen
);
676 INIT_TP_WR(req
, ep
->hwtid
);
677 OPCODE_TID(req
) = cpu_to_be32(MK_OPCODE_TID(CPL_GET_TCB
, ep
->hwtid
));
678 req
->reply_ctrl
= htons(REPLY_CHAN_V(0) | QUEUENO_V(ep
->rss_qid
));
681 * keep a ref on the ep so the tcb is not unlocked before this
682 * cpl completes. The ref is released in read_tcb_rpl().
684 c4iw_get_ep(&ep
->com
);
685 if (WARN_ON(c4iw_ofld_send(&ep
->com
.dev
->rdev
, skb
)))
686 c4iw_put_ep(&ep
->com
);
689 static int send_abort_req(struct c4iw_ep
*ep
)
691 u32 wrlen
= roundup(sizeof(struct cpl_abort_req
), 16);
692 struct sk_buff
*req_skb
= skb_dequeue(&ep
->com
.ep_skb_list
);
694 pr_debug("ep %p tid %u\n", ep
, ep
->hwtid
);
695 if (WARN_ON(!req_skb
))
698 cxgb_mk_abort_req(req_skb
, wrlen
, ep
->hwtid
, ep
->txq_idx
,
699 ep
, abort_arp_failure
);
701 return c4iw_l2t_send(&ep
->com
.dev
->rdev
, req_skb
, ep
->l2t
);
704 static int send_abort(struct c4iw_ep
*ep
)
706 if (!ep
->com
.qp
|| !ep
->com
.qp
->srq
) {
710 set_bit(ABORT_REQ_IN_PROGRESS
, &ep
->com
.flags
);
715 static int send_connect(struct c4iw_ep
*ep
)
717 struct cpl_act_open_req
*req
= NULL
;
718 struct cpl_t5_act_open_req
*t5req
= NULL
;
719 struct cpl_t6_act_open_req
*t6req
= NULL
;
720 struct cpl_act_open_req6
*req6
= NULL
;
721 struct cpl_t5_act_open_req6
*t5req6
= NULL
;
722 struct cpl_t6_act_open_req6
*t6req6
= NULL
;
726 unsigned int mtu_idx
;
728 int win
, sizev4
, sizev6
, wrlen
;
729 struct sockaddr_in
*la
= (struct sockaddr_in
*)
731 struct sockaddr_in
*ra
= (struct sockaddr_in
*)
732 &ep
->com
.remote_addr
;
733 struct sockaddr_in6
*la6
= (struct sockaddr_in6
*)
735 struct sockaddr_in6
*ra6
= (struct sockaddr_in6
*)
736 &ep
->com
.remote_addr
;
738 enum chip_type adapter_type
= ep
->com
.dev
->rdev
.lldi
.adapter_type
;
739 u32 isn
= (prandom_u32() & ~7UL) - 1;
740 struct net_device
*netdev
;
743 netdev
= ep
->com
.dev
->rdev
.lldi
.ports
[0];
745 switch (CHELSIO_CHIP_VERSION(adapter_type
)) {
747 sizev4
= sizeof(struct cpl_act_open_req
);
748 sizev6
= sizeof(struct cpl_act_open_req6
);
751 sizev4
= sizeof(struct cpl_t5_act_open_req
);
752 sizev6
= sizeof(struct cpl_t5_act_open_req6
);
755 sizev4
= sizeof(struct cpl_t6_act_open_req
);
756 sizev6
= sizeof(struct cpl_t6_act_open_req6
);
759 pr_err("T%d Chip is not supported\n",
760 CHELSIO_CHIP_VERSION(adapter_type
));
764 wrlen
= (ep
->com
.remote_addr
.ss_family
== AF_INET
) ?
765 roundup(sizev4
, 16) :
768 pr_debug("ep %p atid %u\n", ep
, ep
->atid
);
770 skb
= get_skb(NULL
, wrlen
, GFP_KERNEL
);
772 pr_err("%s - failed to alloc skb\n", __func__
);
775 set_wr_txq(skb
, CPL_PRIORITY_SETUP
, ep
->ctrlq_idx
);
777 cxgb_best_mtu(ep
->com
.dev
->rdev
.lldi
.mtus
, ep
->mtu
, &mtu_idx
,
778 enable_tcp_timestamps
,
779 (ep
->com
.remote_addr
.ss_family
== AF_INET
) ? 0 : 1);
780 wscale
= cxgb_compute_wscale(rcv_win
);
783 * Specify the largest window that will fit in opt0. The
784 * remainder will be specified in the rx_data_ack.
786 win
= ep
->rcv_win
>> 10;
787 if (win
> RCV_BUFSIZ_M
)
790 opt0
= (nocong
? NO_CONG_F
: 0) |
793 WND_SCALE_V(wscale
) |
795 L2T_IDX_V(ep
->l2t
->idx
) |
796 TX_CHAN_V(ep
->tx_chan
) |
797 SMAC_SEL_V(ep
->smac_idx
) |
798 DSCP_V(ep
->tos
>> 2) |
799 ULP_MODE_V(ULP_MODE_TCPDDP
) |
801 opt2
= RX_CHANNEL_V(0) |
802 CCTRL_ECN_V(enable_ecn
) |
803 RSS_QUEUE_VALID_F
| RSS_QUEUE_V(ep
->rss_qid
);
804 if (enable_tcp_timestamps
)
805 opt2
|= TSTAMPS_EN_F
;
808 if (wscale
&& enable_tcp_window_scaling
)
809 opt2
|= WND_SCALE_EN_F
;
810 if (CHELSIO_CHIP_VERSION(adapter_type
) > CHELSIO_T4
) {
814 opt2
|= T5_OPT_2_VALID_F
;
815 opt2
|= CONG_CNTRL_V(CONG_ALG_TAHOE
);
819 params
= cxgb4_select_ntuple(netdev
, ep
->l2t
);
821 if (ep
->com
.remote_addr
.ss_family
== AF_INET6
)
822 cxgb4_clip_get(ep
->com
.dev
->rdev
.lldi
.ports
[0],
823 (const u32
*)&la6
->sin6_addr
.s6_addr
, 1);
825 t4_set_arp_err_handler(skb
, ep
, act_open_req_arp_failure
);
827 if (ep
->com
.remote_addr
.ss_family
== AF_INET
) {
828 switch (CHELSIO_CHIP_VERSION(adapter_type
)) {
830 req
= skb_put(skb
, wrlen
);
834 t5req
= skb_put(skb
, wrlen
);
835 INIT_TP_WR(t5req
, 0);
836 req
= (struct cpl_act_open_req
*)t5req
;
839 t6req
= skb_put(skb
, wrlen
);
840 INIT_TP_WR(t6req
, 0);
841 req
= (struct cpl_act_open_req
*)t6req
;
842 t5req
= (struct cpl_t5_act_open_req
*)t6req
;
845 pr_err("T%d Chip is not supported\n",
846 CHELSIO_CHIP_VERSION(adapter_type
));
851 OPCODE_TID(req
) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ
,
852 ((ep
->rss_qid
<<14) | ep
->atid
)));
853 req
->local_port
= la
->sin_port
;
854 req
->peer_port
= ra
->sin_port
;
855 req
->local_ip
= la
->sin_addr
.s_addr
;
856 req
->peer_ip
= ra
->sin_addr
.s_addr
;
857 req
->opt0
= cpu_to_be64(opt0
);
859 if (is_t4(ep
->com
.dev
->rdev
.lldi
.adapter_type
)) {
860 req
->params
= cpu_to_be32(params
);
861 req
->opt2
= cpu_to_be32(opt2
);
863 if (is_t5(ep
->com
.dev
->rdev
.lldi
.adapter_type
)) {
865 cpu_to_be64(FILTER_TUPLE_V(params
));
866 t5req
->rsvd
= cpu_to_be32(isn
);
867 pr_debug("snd_isn %u\n", t5req
->rsvd
);
868 t5req
->opt2
= cpu_to_be32(opt2
);
871 cpu_to_be64(FILTER_TUPLE_V(params
));
872 t6req
->rsvd
= cpu_to_be32(isn
);
873 pr_debug("snd_isn %u\n", t6req
->rsvd
);
874 t6req
->opt2
= cpu_to_be32(opt2
);
878 switch (CHELSIO_CHIP_VERSION(adapter_type
)) {
880 req6
= skb_put(skb
, wrlen
);
884 t5req6
= skb_put(skb
, wrlen
);
885 INIT_TP_WR(t5req6
, 0);
886 req6
= (struct cpl_act_open_req6
*)t5req6
;
889 t6req6
= skb_put(skb
, wrlen
);
890 INIT_TP_WR(t6req6
, 0);
891 req6
= (struct cpl_act_open_req6
*)t6req6
;
892 t5req6
= (struct cpl_t5_act_open_req6
*)t6req6
;
895 pr_err("T%d Chip is not supported\n",
896 CHELSIO_CHIP_VERSION(adapter_type
));
901 OPCODE_TID(req6
) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6
,
902 ((ep
->rss_qid
<<14)|ep
->atid
)));
903 req6
->local_port
= la6
->sin6_port
;
904 req6
->peer_port
= ra6
->sin6_port
;
905 req6
->local_ip_hi
= *((__be64
*)(la6
->sin6_addr
.s6_addr
));
906 req6
->local_ip_lo
= *((__be64
*)(la6
->sin6_addr
.s6_addr
+ 8));
907 req6
->peer_ip_hi
= *((__be64
*)(ra6
->sin6_addr
.s6_addr
));
908 req6
->peer_ip_lo
= *((__be64
*)(ra6
->sin6_addr
.s6_addr
+ 8));
909 req6
->opt0
= cpu_to_be64(opt0
);
911 if (is_t4(ep
->com
.dev
->rdev
.lldi
.adapter_type
)) {
912 req6
->params
= cpu_to_be32(cxgb4_select_ntuple(netdev
,
914 req6
->opt2
= cpu_to_be32(opt2
);
916 if (is_t5(ep
->com
.dev
->rdev
.lldi
.adapter_type
)) {
918 cpu_to_be64(FILTER_TUPLE_V(params
));
919 t5req6
->rsvd
= cpu_to_be32(isn
);
920 pr_debug("snd_isn %u\n", t5req6
->rsvd
);
921 t5req6
->opt2
= cpu_to_be32(opt2
);
924 cpu_to_be64(FILTER_TUPLE_V(params
));
925 t6req6
->rsvd
= cpu_to_be32(isn
);
926 pr_debug("snd_isn %u\n", t6req6
->rsvd
);
927 t6req6
->opt2
= cpu_to_be32(opt2
);
933 set_bit(ACT_OPEN_REQ
, &ep
->com
.history
);
934 ret
= c4iw_l2t_send(&ep
->com
.dev
->rdev
, skb
, ep
->l2t
);
936 if (ret
&& ep
->com
.remote_addr
.ss_family
== AF_INET6
)
937 cxgb4_clip_release(ep
->com
.dev
->rdev
.lldi
.ports
[0],
938 (const u32
*)&la6
->sin6_addr
.s6_addr
, 1);
942 static int send_mpa_req(struct c4iw_ep
*ep
, struct sk_buff
*skb
,
945 int mpalen
, wrlen
, ret
;
946 struct fw_ofld_tx_data_wr
*req
;
947 struct mpa_message
*mpa
;
948 struct mpa_v2_conn_params mpa_v2_params
;
950 pr_debug("ep %p tid %u pd_len %d\n",
951 ep
, ep
->hwtid
, ep
->plen
);
953 mpalen
= sizeof(*mpa
) + ep
->plen
;
954 if (mpa_rev_to_use
== 2)
955 mpalen
+= sizeof(struct mpa_v2_conn_params
);
956 wrlen
= roundup(mpalen
+ sizeof(*req
), 16);
957 skb
= get_skb(skb
, wrlen
, GFP_KERNEL
);
959 connect_reply_upcall(ep
, -ENOMEM
);
962 set_wr_txq(skb
, CPL_PRIORITY_DATA
, ep
->txq_idx
);
964 req
= skb_put_zero(skb
, wrlen
);
965 req
->op_to_immdlen
= cpu_to_be32(
966 FW_WR_OP_V(FW_OFLD_TX_DATA_WR
) |
968 FW_WR_IMMDLEN_V(mpalen
));
969 req
->flowid_len16
= cpu_to_be32(
970 FW_WR_FLOWID_V(ep
->hwtid
) |
971 FW_WR_LEN16_V(wrlen
>> 4));
972 req
->plen
= cpu_to_be32(mpalen
);
973 req
->tunnel_to_proxy
= cpu_to_be32(
974 FW_OFLD_TX_DATA_WR_FLUSH_F
|
975 FW_OFLD_TX_DATA_WR_SHOVE_F
);
977 mpa
= (struct mpa_message
*)(req
+ 1);
978 memcpy(mpa
->key
, MPA_KEY_REQ
, sizeof(mpa
->key
));
982 mpa
->flags
|= MPA_CRC
;
983 if (markers_enabled
) {
984 mpa
->flags
|= MPA_MARKERS
;
985 ep
->mpa_attr
.recv_marker_enabled
= 1;
987 ep
->mpa_attr
.recv_marker_enabled
= 0;
989 if (mpa_rev_to_use
== 2)
990 mpa
->flags
|= MPA_ENHANCED_RDMA_CONN
;
992 mpa
->private_data_size
= htons(ep
->plen
);
993 mpa
->revision
= mpa_rev_to_use
;
994 if (mpa_rev_to_use
== 1) {
995 ep
->tried_with_mpa_v1
= 1;
996 ep
->retry_with_mpa_v1
= 0;
999 if (mpa_rev_to_use
== 2) {
1000 mpa
->private_data_size
=
1001 htons(ntohs(mpa
->private_data_size
) +
1002 sizeof(struct mpa_v2_conn_params
));
1003 pr_debug("initiator ird %u ord %u\n", ep
->ird
,
1005 mpa_v2_params
.ird
= htons((u16
)ep
->ird
);
1006 mpa_v2_params
.ord
= htons((u16
)ep
->ord
);
1009 mpa_v2_params
.ird
|= htons(MPA_V2_PEER2PEER_MODEL
);
1010 if (p2p_type
== FW_RI_INIT_P2PTYPE_RDMA_WRITE
)
1011 mpa_v2_params
.ord
|=
1012 htons(MPA_V2_RDMA_WRITE_RTR
);
1013 else if (p2p_type
== FW_RI_INIT_P2PTYPE_READ_REQ
)
1014 mpa_v2_params
.ord
|=
1015 htons(MPA_V2_RDMA_READ_RTR
);
1017 memcpy(mpa
->private_data
, &mpa_v2_params
,
1018 sizeof(struct mpa_v2_conn_params
));
1021 memcpy(mpa
->private_data
+
1022 sizeof(struct mpa_v2_conn_params
),
1023 ep
->mpa_pkt
+ sizeof(*mpa
), ep
->plen
);
1026 memcpy(mpa
->private_data
,
1027 ep
->mpa_pkt
+ sizeof(*mpa
), ep
->plen
);
1030 * Reference the mpa skb. This ensures the data area
1031 * will remain in memory until the hw acks the tx.
1032 * Function fw4_ack() will deref it.
1035 t4_set_arp_err_handler(skb
, NULL
, arp_failure_discard
);
1037 ret
= c4iw_l2t_send(&ep
->com
.dev
->rdev
, skb
, ep
->l2t
);
1041 __state_set(&ep
->com
, MPA_REQ_SENT
);
1042 ep
->mpa_attr
.initiator
= 1;
1043 ep
->snd_seq
+= mpalen
;
1047 static int send_mpa_reject(struct c4iw_ep
*ep
, const void *pdata
, u8 plen
)
1050 struct fw_ofld_tx_data_wr
*req
;
1051 struct mpa_message
*mpa
;
1052 struct sk_buff
*skb
;
1053 struct mpa_v2_conn_params mpa_v2_params
;
1055 pr_debug("ep %p tid %u pd_len %d\n",
1056 ep
, ep
->hwtid
, ep
->plen
);
1058 mpalen
= sizeof(*mpa
) + plen
;
1059 if (ep
->mpa_attr
.version
== 2 && ep
->mpa_attr
.enhanced_rdma_conn
)
1060 mpalen
+= sizeof(struct mpa_v2_conn_params
);
1061 wrlen
= roundup(mpalen
+ sizeof(*req
), 16);
1063 skb
= get_skb(NULL
, wrlen
, GFP_KERNEL
);
1065 pr_err("%s - cannot alloc skb!\n", __func__
);
1068 set_wr_txq(skb
, CPL_PRIORITY_DATA
, ep
->txq_idx
);
1070 req
= skb_put_zero(skb
, wrlen
);
1071 req
->op_to_immdlen
= cpu_to_be32(
1072 FW_WR_OP_V(FW_OFLD_TX_DATA_WR
) |
1074 FW_WR_IMMDLEN_V(mpalen
));
1075 req
->flowid_len16
= cpu_to_be32(
1076 FW_WR_FLOWID_V(ep
->hwtid
) |
1077 FW_WR_LEN16_V(wrlen
>> 4));
1078 req
->plen
= cpu_to_be32(mpalen
);
1079 req
->tunnel_to_proxy
= cpu_to_be32(
1080 FW_OFLD_TX_DATA_WR_FLUSH_F
|
1081 FW_OFLD_TX_DATA_WR_SHOVE_F
);
1083 mpa
= (struct mpa_message
*)(req
+ 1);
1084 memset(mpa
, 0, sizeof(*mpa
));
1085 memcpy(mpa
->key
, MPA_KEY_REP
, sizeof(mpa
->key
));
1086 mpa
->flags
= MPA_REJECT
;
1087 mpa
->revision
= ep
->mpa_attr
.version
;
1088 mpa
->private_data_size
= htons(plen
);
1090 if (ep
->mpa_attr
.version
== 2 && ep
->mpa_attr
.enhanced_rdma_conn
) {
1091 mpa
->flags
|= MPA_ENHANCED_RDMA_CONN
;
1092 mpa
->private_data_size
=
1093 htons(ntohs(mpa
->private_data_size
) +
1094 sizeof(struct mpa_v2_conn_params
));
1095 mpa_v2_params
.ird
= htons(((u16
)ep
->ird
) |
1096 (peer2peer
? MPA_V2_PEER2PEER_MODEL
:
1098 mpa_v2_params
.ord
= htons(((u16
)ep
->ord
) | (peer2peer
?
1100 FW_RI_INIT_P2PTYPE_RDMA_WRITE
?
1101 MPA_V2_RDMA_WRITE_RTR
: p2p_type
==
1102 FW_RI_INIT_P2PTYPE_READ_REQ
?
1103 MPA_V2_RDMA_READ_RTR
: 0) : 0));
1104 memcpy(mpa
->private_data
, &mpa_v2_params
,
1105 sizeof(struct mpa_v2_conn_params
));
1108 memcpy(mpa
->private_data
+
1109 sizeof(struct mpa_v2_conn_params
), pdata
, plen
);
1112 memcpy(mpa
->private_data
, pdata
, plen
);
1115 * Reference the mpa skb again. This ensures the data area
1116 * will remain in memory until the hw acks the tx.
1117 * Function fw4_ack() will deref it.
1120 set_wr_txq(skb
, CPL_PRIORITY_DATA
, ep
->txq_idx
);
1121 t4_set_arp_err_handler(skb
, NULL
, mpa_start_arp_failure
);
1123 ep
->snd_seq
+= mpalen
;
1124 return c4iw_l2t_send(&ep
->com
.dev
->rdev
, skb
, ep
->l2t
);
1127 static int send_mpa_reply(struct c4iw_ep
*ep
, const void *pdata
, u8 plen
)
1130 struct fw_ofld_tx_data_wr
*req
;
1131 struct mpa_message
*mpa
;
1132 struct sk_buff
*skb
;
1133 struct mpa_v2_conn_params mpa_v2_params
;
1135 pr_debug("ep %p tid %u pd_len %d\n",
1136 ep
, ep
->hwtid
, ep
->plen
);
1138 mpalen
= sizeof(*mpa
) + plen
;
1139 if (ep
->mpa_attr
.version
== 2 && ep
->mpa_attr
.enhanced_rdma_conn
)
1140 mpalen
+= sizeof(struct mpa_v2_conn_params
);
1141 wrlen
= roundup(mpalen
+ sizeof(*req
), 16);
1143 skb
= get_skb(NULL
, wrlen
, GFP_KERNEL
);
1145 pr_err("%s - cannot alloc skb!\n", __func__
);
1148 set_wr_txq(skb
, CPL_PRIORITY_DATA
, ep
->txq_idx
);
1150 req
= skb_put_zero(skb
, wrlen
);
1151 req
->op_to_immdlen
= cpu_to_be32(
1152 FW_WR_OP_V(FW_OFLD_TX_DATA_WR
) |
1154 FW_WR_IMMDLEN_V(mpalen
));
1155 req
->flowid_len16
= cpu_to_be32(
1156 FW_WR_FLOWID_V(ep
->hwtid
) |
1157 FW_WR_LEN16_V(wrlen
>> 4));
1158 req
->plen
= cpu_to_be32(mpalen
);
1159 req
->tunnel_to_proxy
= cpu_to_be32(
1160 FW_OFLD_TX_DATA_WR_FLUSH_F
|
1161 FW_OFLD_TX_DATA_WR_SHOVE_F
);
1163 mpa
= (struct mpa_message
*)(req
+ 1);
1164 memset(mpa
, 0, sizeof(*mpa
));
1165 memcpy(mpa
->key
, MPA_KEY_REP
, sizeof(mpa
->key
));
1167 if (ep
->mpa_attr
.crc_enabled
)
1168 mpa
->flags
|= MPA_CRC
;
1169 if (ep
->mpa_attr
.recv_marker_enabled
)
1170 mpa
->flags
|= MPA_MARKERS
;
1171 mpa
->revision
= ep
->mpa_attr
.version
;
1172 mpa
->private_data_size
= htons(plen
);
1174 if (ep
->mpa_attr
.version
== 2 && ep
->mpa_attr
.enhanced_rdma_conn
) {
1175 mpa
->flags
|= MPA_ENHANCED_RDMA_CONN
;
1176 mpa
->private_data_size
=
1177 htons(ntohs(mpa
->private_data_size
) +
1178 sizeof(struct mpa_v2_conn_params
));
1179 mpa_v2_params
.ird
= htons((u16
)ep
->ird
);
1180 mpa_v2_params
.ord
= htons((u16
)ep
->ord
);
1181 if (peer2peer
&& (ep
->mpa_attr
.p2p_type
!=
1182 FW_RI_INIT_P2PTYPE_DISABLED
)) {
1183 mpa_v2_params
.ird
|= htons(MPA_V2_PEER2PEER_MODEL
);
1185 if (p2p_type
== FW_RI_INIT_P2PTYPE_RDMA_WRITE
)
1186 mpa_v2_params
.ord
|=
1187 htons(MPA_V2_RDMA_WRITE_RTR
);
1188 else if (p2p_type
== FW_RI_INIT_P2PTYPE_READ_REQ
)
1189 mpa_v2_params
.ord
|=
1190 htons(MPA_V2_RDMA_READ_RTR
);
1193 memcpy(mpa
->private_data
, &mpa_v2_params
,
1194 sizeof(struct mpa_v2_conn_params
));
1197 memcpy(mpa
->private_data
+
1198 sizeof(struct mpa_v2_conn_params
), pdata
, plen
);
1201 memcpy(mpa
->private_data
, pdata
, plen
);
1204 * Reference the mpa skb. This ensures the data area
1205 * will remain in memory until the hw acks the tx.
1206 * Function fw4_ack() will deref it.
1209 t4_set_arp_err_handler(skb
, NULL
, mpa_start_arp_failure
);
1211 __state_set(&ep
->com
, MPA_REP_SENT
);
1212 ep
->snd_seq
+= mpalen
;
1213 return c4iw_l2t_send(&ep
->com
.dev
->rdev
, skb
, ep
->l2t
);
1216 static int act_establish(struct c4iw_dev
*dev
, struct sk_buff
*skb
)
1219 struct cpl_act_establish
*req
= cplhdr(skb
);
1220 unsigned short tcp_opt
= ntohs(req
->tcp_opt
);
1221 unsigned int tid
= GET_TID(req
);
1222 unsigned int atid
= TID_TID_G(ntohl(req
->tos_atid
));
1223 struct tid_info
*t
= dev
->rdev
.lldi
.tids
;
1226 ep
= lookup_atid(t
, atid
);
1228 pr_debug("ep %p tid %u snd_isn %u rcv_isn %u\n", ep
, tid
,
1229 be32_to_cpu(req
->snd_isn
), be32_to_cpu(req
->rcv_isn
));
1231 mutex_lock(&ep
->com
.mutex
);
1232 dst_confirm(ep
->dst
);
1234 /* setup the hwtid for this connection */
1236 cxgb4_insert_tid(t
, ep
, tid
, ep
->com
.local_addr
.ss_family
);
1239 ep
->snd_seq
= be32_to_cpu(req
->snd_isn
);
1240 ep
->rcv_seq
= be32_to_cpu(req
->rcv_isn
);
1241 ep
->snd_wscale
= TCPOPT_SND_WSCALE_G(tcp_opt
);
1243 set_emss(ep
, tcp_opt
);
1245 /* dealloc the atid */
1246 xa_erase_irq(&ep
->com
.dev
->atids
, atid
);
1247 cxgb4_free_atid(t
, atid
);
1248 set_bit(ACT_ESTAB
, &ep
->com
.history
);
1250 /* start MPA negotiation */
1251 ret
= send_flowc(ep
);
1254 if (ep
->retry_with_mpa_v1
)
1255 ret
= send_mpa_req(ep
, skb
, 1);
1257 ret
= send_mpa_req(ep
, skb
, mpa_rev
);
1260 mutex_unlock(&ep
->com
.mutex
);
1263 mutex_unlock(&ep
->com
.mutex
);
1264 connect_reply_upcall(ep
, -ENOMEM
);
1265 c4iw_ep_disconnect(ep
, 0, GFP_KERNEL
);
1269 static void close_complete_upcall(struct c4iw_ep
*ep
, int status
)
1271 struct iw_cm_event event
;
1273 pr_debug("ep %p tid %u\n", ep
, ep
->hwtid
);
1274 memset(&event
, 0, sizeof(event
));
1275 event
.event
= IW_CM_EVENT_CLOSE
;
1276 event
.status
= status
;
1277 if (ep
->com
.cm_id
) {
1278 pr_debug("close complete delivered ep %p cm_id %p tid %u\n",
1279 ep
, ep
->com
.cm_id
, ep
->hwtid
);
1280 ep
->com
.cm_id
->event_handler(ep
->com
.cm_id
, &event
);
1281 deref_cm_id(&ep
->com
);
1282 set_bit(CLOSE_UPCALL
, &ep
->com
.history
);
1286 static void peer_close_upcall(struct c4iw_ep
*ep
)
1288 struct iw_cm_event event
;
1290 pr_debug("ep %p tid %u\n", ep
, ep
->hwtid
);
1291 memset(&event
, 0, sizeof(event
));
1292 event
.event
= IW_CM_EVENT_DISCONNECT
;
1293 if (ep
->com
.cm_id
) {
1294 pr_debug("peer close delivered ep %p cm_id %p tid %u\n",
1295 ep
, ep
->com
.cm_id
, ep
->hwtid
);
1296 ep
->com
.cm_id
->event_handler(ep
->com
.cm_id
, &event
);
1297 set_bit(DISCONN_UPCALL
, &ep
->com
.history
);
1301 static void peer_abort_upcall(struct c4iw_ep
*ep
)
1303 struct iw_cm_event event
;
1305 pr_debug("ep %p tid %u\n", ep
, ep
->hwtid
);
1306 memset(&event
, 0, sizeof(event
));
1307 event
.event
= IW_CM_EVENT_CLOSE
;
1308 event
.status
= -ECONNRESET
;
1309 if (ep
->com
.cm_id
) {
1310 pr_debug("abort delivered ep %p cm_id %p tid %u\n", ep
,
1311 ep
->com
.cm_id
, ep
->hwtid
);
1312 ep
->com
.cm_id
->event_handler(ep
->com
.cm_id
, &event
);
1313 deref_cm_id(&ep
->com
);
1314 set_bit(ABORT_UPCALL
, &ep
->com
.history
);
1318 static void connect_reply_upcall(struct c4iw_ep
*ep
, int status
)
1320 struct iw_cm_event event
;
1322 pr_debug("ep %p tid %u status %d\n",
1323 ep
, ep
->hwtid
, status
);
1324 memset(&event
, 0, sizeof(event
));
1325 event
.event
= IW_CM_EVENT_CONNECT_REPLY
;
1326 event
.status
= status
;
1327 memcpy(&event
.local_addr
, &ep
->com
.local_addr
,
1328 sizeof(ep
->com
.local_addr
));
1329 memcpy(&event
.remote_addr
, &ep
->com
.remote_addr
,
1330 sizeof(ep
->com
.remote_addr
));
1332 if ((status
== 0) || (status
== -ECONNREFUSED
)) {
1333 if (!ep
->tried_with_mpa_v1
) {
1334 /* this means MPA_v2 is used */
1335 event
.ord
= ep
->ird
;
1336 event
.ird
= ep
->ord
;
1337 event
.private_data_len
= ep
->plen
-
1338 sizeof(struct mpa_v2_conn_params
);
1339 event
.private_data
= ep
->mpa_pkt
+
1340 sizeof(struct mpa_message
) +
1341 sizeof(struct mpa_v2_conn_params
);
1343 /* this means MPA_v1 is used */
1344 event
.ord
= cur_max_read_depth(ep
->com
.dev
);
1345 event
.ird
= cur_max_read_depth(ep
->com
.dev
);
1346 event
.private_data_len
= ep
->plen
;
1347 event
.private_data
= ep
->mpa_pkt
+
1348 sizeof(struct mpa_message
);
1352 pr_debug("ep %p tid %u status %d\n", ep
,
1354 set_bit(CONN_RPL_UPCALL
, &ep
->com
.history
);
1355 ep
->com
.cm_id
->event_handler(ep
->com
.cm_id
, &event
);
1358 deref_cm_id(&ep
->com
);
1361 static int connect_request_upcall(struct c4iw_ep
*ep
)
1363 struct iw_cm_event event
;
1366 pr_debug("ep %p tid %u\n", ep
, ep
->hwtid
);
1367 memset(&event
, 0, sizeof(event
));
1368 event
.event
= IW_CM_EVENT_CONNECT_REQUEST
;
1369 memcpy(&event
.local_addr
, &ep
->com
.local_addr
,
1370 sizeof(ep
->com
.local_addr
));
1371 memcpy(&event
.remote_addr
, &ep
->com
.remote_addr
,
1372 sizeof(ep
->com
.remote_addr
));
1373 event
.provider_data
= ep
;
1374 if (!ep
->tried_with_mpa_v1
) {
1375 /* this means MPA_v2 is used */
1376 event
.ord
= ep
->ord
;
1377 event
.ird
= ep
->ird
;
1378 event
.private_data_len
= ep
->plen
-
1379 sizeof(struct mpa_v2_conn_params
);
1380 event
.private_data
= ep
->mpa_pkt
+ sizeof(struct mpa_message
) +
1381 sizeof(struct mpa_v2_conn_params
);
1383 /* this means MPA_v1 is used. Send max supported */
1384 event
.ord
= cur_max_read_depth(ep
->com
.dev
);
1385 event
.ird
= cur_max_read_depth(ep
->com
.dev
);
1386 event
.private_data_len
= ep
->plen
;
1387 event
.private_data
= ep
->mpa_pkt
+ sizeof(struct mpa_message
);
1389 c4iw_get_ep(&ep
->com
);
1390 ret
= ep
->parent_ep
->com
.cm_id
->event_handler(ep
->parent_ep
->com
.cm_id
,
1393 c4iw_put_ep(&ep
->com
);
1394 set_bit(CONNREQ_UPCALL
, &ep
->com
.history
);
1395 c4iw_put_ep(&ep
->parent_ep
->com
);
1399 static void established_upcall(struct c4iw_ep
*ep
)
1401 struct iw_cm_event event
;
1403 pr_debug("ep %p tid %u\n", ep
, ep
->hwtid
);
1404 memset(&event
, 0, sizeof(event
));
1405 event
.event
= IW_CM_EVENT_ESTABLISHED
;
1406 event
.ird
= ep
->ord
;
1407 event
.ord
= ep
->ird
;
1408 if (ep
->com
.cm_id
) {
1409 pr_debug("ep %p tid %u\n", ep
, ep
->hwtid
);
1410 ep
->com
.cm_id
->event_handler(ep
->com
.cm_id
, &event
);
1411 set_bit(ESTAB_UPCALL
, &ep
->com
.history
);
1415 static int update_rx_credits(struct c4iw_ep
*ep
, u32 credits
)
1417 struct sk_buff
*skb
;
1418 u32 wrlen
= roundup(sizeof(struct cpl_rx_data_ack
), 16);
1421 pr_debug("ep %p tid %u credits %u\n",
1422 ep
, ep
->hwtid
, credits
);
1423 skb
= get_skb(NULL
, wrlen
, GFP_KERNEL
);
1425 pr_err("update_rx_credits - cannot alloc skb!\n");
1430 * If we couldn't specify the entire rcv window at connection setup
1431 * due to the limit in the number of bits in the RCV_BUFSIZ field,
1432 * then add the overage in to the credits returned.
1434 if (ep
->rcv_win
> RCV_BUFSIZ_M
* 1024)
1435 credits
+= ep
->rcv_win
- RCV_BUFSIZ_M
* 1024;
1437 credit_dack
= credits
| RX_FORCE_ACK_F
| RX_DACK_CHANGE_F
|
1438 RX_DACK_MODE_V(dack_mode
);
1440 cxgb_mk_rx_data_ack(skb
, wrlen
, ep
->hwtid
, ep
->ctrlq_idx
,
1443 c4iw_ofld_send(&ep
->com
.dev
->rdev
, skb
);
1447 #define RELAXED_IRD_NEGOTIATION 1
1450 * process_mpa_reply - process streaming mode MPA reply
1454 * 0 upon success indicating a connect request was delivered to the ULP
1455 * or the mpa request is incomplete but valid so far.
1457 * 1 if a failure requires the caller to close the connection.
1459 * 2 if a failure requires the caller to abort the connection.
1461 static int process_mpa_reply(struct c4iw_ep
*ep
, struct sk_buff
*skb
)
1463 struct mpa_message
*mpa
;
1464 struct mpa_v2_conn_params
*mpa_v2_params
;
1466 u16 resp_ird
, resp_ord
;
1467 u8 rtr_mismatch
= 0, insuff_ird
= 0;
1468 struct c4iw_qp_attributes attrs
;
1469 enum c4iw_qp_attr_mask mask
;
1473 pr_debug("ep %p tid %u\n", ep
, ep
->hwtid
);
1476 * If we get more than the supported amount of private data
1477 * then we must fail this connection.
1479 if (ep
->mpa_pkt_len
+ skb
->len
> sizeof(ep
->mpa_pkt
)) {
1481 goto err_stop_timer
;
1485 * copy the new data into our accumulation buffer.
1487 skb_copy_from_linear_data(skb
, &(ep
->mpa_pkt
[ep
->mpa_pkt_len
]),
1489 ep
->mpa_pkt_len
+= skb
->len
;
1492 * if we don't even have the mpa message, then bail.
1494 if (ep
->mpa_pkt_len
< sizeof(*mpa
))
1496 mpa
= (struct mpa_message
*) ep
->mpa_pkt
;
1498 /* Validate MPA header. */
1499 if (mpa
->revision
> mpa_rev
) {
1500 pr_err("%s MPA version mismatch. Local = %d, Received = %d\n",
1501 __func__
, mpa_rev
, mpa
->revision
);
1503 goto err_stop_timer
;
1505 if (memcmp(mpa
->key
, MPA_KEY_REP
, sizeof(mpa
->key
))) {
1507 goto err_stop_timer
;
1510 plen
= ntohs(mpa
->private_data_size
);
1513 * Fail if there's too much private data.
1515 if (plen
> MPA_MAX_PRIVATE_DATA
) {
1517 goto err_stop_timer
;
1521 * If plen does not account for pkt size
1523 if (ep
->mpa_pkt_len
> (sizeof(*mpa
) + plen
)) {
1525 goto err_stop_timer
;
1528 ep
->plen
= (u8
) plen
;
1531 * If we don't have all the pdata yet, then bail.
1532 * We'll continue process when more data arrives.
1534 if (ep
->mpa_pkt_len
< (sizeof(*mpa
) + plen
))
1537 if (mpa
->flags
& MPA_REJECT
) {
1538 err
= -ECONNREFUSED
;
1539 goto err_stop_timer
;
1543 * Stop mpa timer. If it expired, then
1544 * we ignore the MPA reply. process_timeout()
1545 * will abort the connection.
1547 if (stop_ep_timer(ep
))
1551 * If we get here we have accumulated the entire mpa
1552 * start reply message including private data. And
1553 * the MPA header is valid.
1555 __state_set(&ep
->com
, FPDU_MODE
);
1556 ep
->mpa_attr
.crc_enabled
= (mpa
->flags
& MPA_CRC
) | crc_enabled
? 1 : 0;
1557 ep
->mpa_attr
.xmit_marker_enabled
= mpa
->flags
& MPA_MARKERS
? 1 : 0;
1558 ep
->mpa_attr
.version
= mpa
->revision
;
1559 ep
->mpa_attr
.p2p_type
= FW_RI_INIT_P2PTYPE_DISABLED
;
1561 if (mpa
->revision
== 2) {
1562 ep
->mpa_attr
.enhanced_rdma_conn
=
1563 mpa
->flags
& MPA_ENHANCED_RDMA_CONN
? 1 : 0;
1564 if (ep
->mpa_attr
.enhanced_rdma_conn
) {
1565 mpa_v2_params
= (struct mpa_v2_conn_params
*)
1566 (ep
->mpa_pkt
+ sizeof(*mpa
));
1567 resp_ird
= ntohs(mpa_v2_params
->ird
) &
1568 MPA_V2_IRD_ORD_MASK
;
1569 resp_ord
= ntohs(mpa_v2_params
->ord
) &
1570 MPA_V2_IRD_ORD_MASK
;
1571 pr_debug("responder ird %u ord %u ep ird %u ord %u\n",
1572 resp_ird
, resp_ord
, ep
->ird
, ep
->ord
);
1575 * This is a double-check. Ideally, below checks are
1576 * not required since ird/ord stuff has been taken
1577 * care of in c4iw_accept_cr
1579 if (ep
->ird
< resp_ord
) {
1580 if (RELAXED_IRD_NEGOTIATION
&& resp_ord
<=
1581 ep
->com
.dev
->rdev
.lldi
.max_ordird_qp
)
1585 } else if (ep
->ird
> resp_ord
) {
1588 if (ep
->ord
> resp_ird
) {
1589 if (RELAXED_IRD_NEGOTIATION
)
1600 if (ntohs(mpa_v2_params
->ird
) &
1601 MPA_V2_PEER2PEER_MODEL
) {
1602 if (ntohs(mpa_v2_params
->ord
) &
1603 MPA_V2_RDMA_WRITE_RTR
)
1604 ep
->mpa_attr
.p2p_type
=
1605 FW_RI_INIT_P2PTYPE_RDMA_WRITE
;
1606 else if (ntohs(mpa_v2_params
->ord
) &
1607 MPA_V2_RDMA_READ_RTR
)
1608 ep
->mpa_attr
.p2p_type
=
1609 FW_RI_INIT_P2PTYPE_READ_REQ
;
1612 } else if (mpa
->revision
== 1)
1614 ep
->mpa_attr
.p2p_type
= p2p_type
;
1616 pr_debug("crc_enabled=%d, recv_marker_enabled=%d, xmit_marker_enabled=%d, version=%d p2p_type=%d local-p2p_type = %d\n",
1617 ep
->mpa_attr
.crc_enabled
,
1618 ep
->mpa_attr
.recv_marker_enabled
,
1619 ep
->mpa_attr
.xmit_marker_enabled
, ep
->mpa_attr
.version
,
1620 ep
->mpa_attr
.p2p_type
, p2p_type
);
1623 * If responder's RTR does not match with that of initiator, assign
1624 * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not
1625 * generated when moving QP to RTS state.
1626 * A TERM message will be sent after QP has moved to RTS state
1628 if ((ep
->mpa_attr
.version
== 2) && peer2peer
&&
1629 (ep
->mpa_attr
.p2p_type
!= p2p_type
)) {
1630 ep
->mpa_attr
.p2p_type
= FW_RI_INIT_P2PTYPE_DISABLED
;
1634 attrs
.mpa_attr
= ep
->mpa_attr
;
1635 attrs
.max_ird
= ep
->ird
;
1636 attrs
.max_ord
= ep
->ord
;
1637 attrs
.llp_stream_handle
= ep
;
1638 attrs
.next_state
= C4IW_QP_STATE_RTS
;
1640 mask
= C4IW_QP_ATTR_NEXT_STATE
|
1641 C4IW_QP_ATTR_LLP_STREAM_HANDLE
| C4IW_QP_ATTR_MPA_ATTR
|
1642 C4IW_QP_ATTR_MAX_IRD
| C4IW_QP_ATTR_MAX_ORD
;
1644 /* bind QP and TID with INIT_WR */
1645 err
= c4iw_modify_qp(ep
->com
.qp
->rhp
,
1646 ep
->com
.qp
, mask
, &attrs
, 1);
1651 * If responder's RTR requirement did not match with what initiator
1652 * supports, generate TERM message
1655 pr_err("%s: RTR mismatch, sending TERM\n", __func__
);
1656 attrs
.layer_etype
= LAYER_MPA
| DDP_LLP
;
1657 attrs
.ecode
= MPA_NOMATCH_RTR
;
1658 attrs
.next_state
= C4IW_QP_STATE_TERMINATE
;
1659 attrs
.send_term
= 1;
1660 err
= c4iw_modify_qp(ep
->com
.qp
->rhp
, ep
->com
.qp
,
1661 C4IW_QP_ATTR_NEXT_STATE
, &attrs
, 1);
1668 * Generate TERM if initiator IRD is not sufficient for responder
1669 * provided ORD. Currently, we do the same behaviour even when
1670 * responder provided IRD is also not sufficient as regards to
1674 pr_err("%s: Insufficient IRD, sending TERM\n", __func__
);
1675 attrs
.layer_etype
= LAYER_MPA
| DDP_LLP
;
1676 attrs
.ecode
= MPA_INSUFF_IRD
;
1677 attrs
.next_state
= C4IW_QP_STATE_TERMINATE
;
1678 attrs
.send_term
= 1;
1679 err
= c4iw_modify_qp(ep
->com
.qp
->rhp
, ep
->com
.qp
,
1680 C4IW_QP_ATTR_NEXT_STATE
, &attrs
, 1);
1691 connect_reply_upcall(ep
, err
);
1696 * process_mpa_request - process streaming mode MPA request
1700 * 0 upon success indicating a connect request was delivered to the ULP
1701 * or the mpa request is incomplete but valid so far.
1703 * 1 if a failure requires the caller to close the connection.
1705 * 2 if a failure requires the caller to abort the connection.
1707 static int process_mpa_request(struct c4iw_ep
*ep
, struct sk_buff
*skb
)
1709 struct mpa_message
*mpa
;
1710 struct mpa_v2_conn_params
*mpa_v2_params
;
1713 pr_debug("ep %p tid %u\n", ep
, ep
->hwtid
);
1716 * If we get more than the supported amount of private data
1717 * then we must fail this connection.
1719 if (ep
->mpa_pkt_len
+ skb
->len
> sizeof(ep
->mpa_pkt
))
1720 goto err_stop_timer
;
1722 pr_debug("enter (%s line %u)\n", __FILE__
, __LINE__
);
1725 * Copy the new data into our accumulation buffer.
1727 skb_copy_from_linear_data(skb
, &(ep
->mpa_pkt
[ep
->mpa_pkt_len
]),
1729 ep
->mpa_pkt_len
+= skb
->len
;
1732 * If we don't even have the mpa message, then bail.
1733 * We'll continue process when more data arrives.
1735 if (ep
->mpa_pkt_len
< sizeof(*mpa
))
1738 pr_debug("enter (%s line %u)\n", __FILE__
, __LINE__
);
1739 mpa
= (struct mpa_message
*) ep
->mpa_pkt
;
1742 * Validate MPA Header.
1744 if (mpa
->revision
> mpa_rev
) {
1745 pr_err("%s MPA version mismatch. Local = %d, Received = %d\n",
1746 __func__
, mpa_rev
, mpa
->revision
);
1747 goto err_stop_timer
;
1750 if (memcmp(mpa
->key
, MPA_KEY_REQ
, sizeof(mpa
->key
)))
1751 goto err_stop_timer
;
1753 plen
= ntohs(mpa
->private_data_size
);
1756 * Fail if there's too much private data.
1758 if (plen
> MPA_MAX_PRIVATE_DATA
)
1759 goto err_stop_timer
;
1762 * If plen does not account for pkt size
1764 if (ep
->mpa_pkt_len
> (sizeof(*mpa
) + plen
))
1765 goto err_stop_timer
;
1766 ep
->plen
= (u8
) plen
;
1769 * If we don't have all the pdata yet, then bail.
1771 if (ep
->mpa_pkt_len
< (sizeof(*mpa
) + plen
))
1775 * If we get here we have accumulated the entire mpa
1776 * start reply message including private data.
1778 ep
->mpa_attr
.initiator
= 0;
1779 ep
->mpa_attr
.crc_enabled
= (mpa
->flags
& MPA_CRC
) | crc_enabled
? 1 : 0;
1780 ep
->mpa_attr
.recv_marker_enabled
= markers_enabled
;
1781 ep
->mpa_attr
.xmit_marker_enabled
= mpa
->flags
& MPA_MARKERS
? 1 : 0;
1782 ep
->mpa_attr
.version
= mpa
->revision
;
1783 if (mpa
->revision
== 1)
1784 ep
->tried_with_mpa_v1
= 1;
1785 ep
->mpa_attr
.p2p_type
= FW_RI_INIT_P2PTYPE_DISABLED
;
1787 if (mpa
->revision
== 2) {
1788 ep
->mpa_attr
.enhanced_rdma_conn
=
1789 mpa
->flags
& MPA_ENHANCED_RDMA_CONN
? 1 : 0;
1790 if (ep
->mpa_attr
.enhanced_rdma_conn
) {
1791 mpa_v2_params
= (struct mpa_v2_conn_params
*)
1792 (ep
->mpa_pkt
+ sizeof(*mpa
));
1793 ep
->ird
= ntohs(mpa_v2_params
->ird
) &
1794 MPA_V2_IRD_ORD_MASK
;
1795 ep
->ird
= min_t(u32
, ep
->ird
,
1796 cur_max_read_depth(ep
->com
.dev
));
1797 ep
->ord
= ntohs(mpa_v2_params
->ord
) &
1798 MPA_V2_IRD_ORD_MASK
;
1799 ep
->ord
= min_t(u32
, ep
->ord
,
1800 cur_max_read_depth(ep
->com
.dev
));
1801 pr_debug("initiator ird %u ord %u\n",
1803 if (ntohs(mpa_v2_params
->ird
) & MPA_V2_PEER2PEER_MODEL
)
1805 if (ntohs(mpa_v2_params
->ord
) &
1806 MPA_V2_RDMA_WRITE_RTR
)
1807 ep
->mpa_attr
.p2p_type
=
1808 FW_RI_INIT_P2PTYPE_RDMA_WRITE
;
1809 else if (ntohs(mpa_v2_params
->ord
) &
1810 MPA_V2_RDMA_READ_RTR
)
1811 ep
->mpa_attr
.p2p_type
=
1812 FW_RI_INIT_P2PTYPE_READ_REQ
;
1815 } else if (mpa
->revision
== 1)
1817 ep
->mpa_attr
.p2p_type
= p2p_type
;
1819 pr_debug("crc_enabled=%d, recv_marker_enabled=%d, xmit_marker_enabled=%d, version=%d p2p_type=%d\n",
1820 ep
->mpa_attr
.crc_enabled
, ep
->mpa_attr
.recv_marker_enabled
,
1821 ep
->mpa_attr
.xmit_marker_enabled
, ep
->mpa_attr
.version
,
1822 ep
->mpa_attr
.p2p_type
);
1824 __state_set(&ep
->com
, MPA_REQ_RCVD
);
1827 mutex_lock_nested(&ep
->parent_ep
->com
.mutex
, SINGLE_DEPTH_NESTING
);
1828 if (ep
->parent_ep
->com
.state
!= DEAD
) {
1829 if (connect_request_upcall(ep
))
1830 goto err_unlock_parent
;
1832 goto err_unlock_parent
;
1834 mutex_unlock(&ep
->parent_ep
->com
.mutex
);
1838 mutex_unlock(&ep
->parent_ep
->com
.mutex
);
1841 (void)stop_ep_timer(ep
);
1846 static int rx_data(struct c4iw_dev
*dev
, struct sk_buff
*skb
)
1849 struct cpl_rx_data
*hdr
= cplhdr(skb
);
1850 unsigned int dlen
= ntohs(hdr
->len
);
1851 unsigned int tid
= GET_TID(hdr
);
1852 __u8 status
= hdr
->status
;
1855 ep
= get_ep_from_tid(dev
, tid
);
1858 pr_debug("ep %p tid %u dlen %u\n", ep
, ep
->hwtid
, dlen
);
1859 skb_pull(skb
, sizeof(*hdr
));
1860 skb_trim(skb
, dlen
);
1861 mutex_lock(&ep
->com
.mutex
);
1863 switch (ep
->com
.state
) {
1865 update_rx_credits(ep
, dlen
);
1866 ep
->rcv_seq
+= dlen
;
1867 disconnect
= process_mpa_reply(ep
, skb
);
1870 update_rx_credits(ep
, dlen
);
1871 ep
->rcv_seq
+= dlen
;
1872 disconnect
= process_mpa_request(ep
, skb
);
1875 struct c4iw_qp_attributes attrs
;
1877 update_rx_credits(ep
, dlen
);
1879 pr_err("%s Unexpected streaming data." \
1880 " qpid %u ep %p state %d tid %u status %d\n",
1881 __func__
, ep
->com
.qp
->wq
.sq
.qid
, ep
,
1882 ep
->com
.state
, ep
->hwtid
, status
);
1883 attrs
.next_state
= C4IW_QP_STATE_TERMINATE
;
1884 c4iw_modify_qp(ep
->com
.qp
->rhp
, ep
->com
.qp
,
1885 C4IW_QP_ATTR_NEXT_STATE
, &attrs
, 1);
1892 mutex_unlock(&ep
->com
.mutex
);
1894 c4iw_ep_disconnect(ep
, disconnect
== 2, GFP_KERNEL
);
1895 c4iw_put_ep(&ep
->com
);
1899 static void complete_cached_srq_buffers(struct c4iw_ep
*ep
, u32 srqidx
)
1901 enum chip_type adapter_type
;
1903 adapter_type
= ep
->com
.dev
->rdev
.lldi
.adapter_type
;
1906 * If this TCB had a srq buffer cached, then we must complete
1907 * it. For user mode, that means saving the srqidx in the
1908 * user/kernel status page for this qp. For kernel mode, just
1909 * synthesize the CQE now.
1911 if (CHELSIO_CHIP_VERSION(adapter_type
) > CHELSIO_T5
&& srqidx
) {
1912 if (ep
->com
.qp
->ibqp
.uobject
)
1913 t4_set_wq_in_error(&ep
->com
.qp
->wq
, srqidx
);
1915 c4iw_flush_srqidx(ep
->com
.qp
, srqidx
);
1919 static int abort_rpl(struct c4iw_dev
*dev
, struct sk_buff
*skb
)
1923 struct cpl_abort_rpl_rss6
*rpl
= cplhdr(skb
);
1925 unsigned int tid
= GET_TID(rpl
);
1927 ep
= get_ep_from_tid(dev
, tid
);
1929 pr_warn("Abort rpl to freed endpoint\n");
1933 if (ep
->com
.qp
&& ep
->com
.qp
->srq
) {
1934 srqidx
= ABORT_RSS_SRQIDX_G(be32_to_cpu(rpl
->srqidx_status
));
1935 complete_cached_srq_buffers(ep
, srqidx
? srqidx
: ep
->srqe_idx
);
1938 pr_debug("ep %p tid %u\n", ep
, ep
->hwtid
);
1939 mutex_lock(&ep
->com
.mutex
);
1940 switch (ep
->com
.state
) {
1942 c4iw_wake_up_noref(ep
->com
.wr_waitp
, -ECONNRESET
);
1943 __state_set(&ep
->com
, DEAD
);
1947 pr_err("%s ep %p state %d\n", __func__
, ep
, ep
->com
.state
);
1950 mutex_unlock(&ep
->com
.mutex
);
1953 close_complete_upcall(ep
, -ECONNRESET
);
1954 release_ep_resources(ep
);
1956 c4iw_put_ep(&ep
->com
);
1960 static int send_fw_act_open_req(struct c4iw_ep
*ep
, unsigned int atid
)
1962 struct sk_buff
*skb
;
1963 struct fw_ofld_connection_wr
*req
;
1964 unsigned int mtu_idx
;
1966 struct sockaddr_in
*sin
;
1969 skb
= get_skb(NULL
, sizeof(*req
), GFP_KERNEL
);
1970 req
= __skb_put_zero(skb
, sizeof(*req
));
1971 req
->op_compl
= htonl(WR_OP_V(FW_OFLD_CONNECTION_WR
));
1972 req
->len16_pkd
= htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*req
), 16)));
1973 req
->le
.filter
= cpu_to_be32(cxgb4_select_ntuple(
1974 ep
->com
.dev
->rdev
.lldi
.ports
[0],
1976 sin
= (struct sockaddr_in
*)&ep
->com
.local_addr
;
1977 req
->le
.lport
= sin
->sin_port
;
1978 req
->le
.u
.ipv4
.lip
= sin
->sin_addr
.s_addr
;
1979 sin
= (struct sockaddr_in
*)&ep
->com
.remote_addr
;
1980 req
->le
.pport
= sin
->sin_port
;
1981 req
->le
.u
.ipv4
.pip
= sin
->sin_addr
.s_addr
;
1982 req
->tcb
.t_state_to_astid
=
1983 htonl(FW_OFLD_CONNECTION_WR_T_STATE_V(TCP_SYN_SENT
) |
1984 FW_OFLD_CONNECTION_WR_ASTID_V(atid
));
1985 req
->tcb
.cplrxdataack_cplpassacceptrpl
=
1986 htons(FW_OFLD_CONNECTION_WR_CPLRXDATAACK_F
);
1987 req
->tcb
.tx_max
= (__force __be32
) jiffies
;
1988 req
->tcb
.rcv_adv
= htons(1);
1989 cxgb_best_mtu(ep
->com
.dev
->rdev
.lldi
.mtus
, ep
->mtu
, &mtu_idx
,
1990 enable_tcp_timestamps
,
1991 (ep
->com
.remote_addr
.ss_family
== AF_INET
) ? 0 : 1);
1992 wscale
= cxgb_compute_wscale(rcv_win
);
1995 * Specify the largest window that will fit in opt0. The
1996 * remainder will be specified in the rx_data_ack.
1998 win
= ep
->rcv_win
>> 10;
1999 if (win
> RCV_BUFSIZ_M
)
2002 req
->tcb
.opt0
= (__force __be64
) (TCAM_BYPASS_F
|
2003 (nocong
? NO_CONG_F
: 0) |
2006 WND_SCALE_V(wscale
) |
2007 MSS_IDX_V(mtu_idx
) |
2008 L2T_IDX_V(ep
->l2t
->idx
) |
2009 TX_CHAN_V(ep
->tx_chan
) |
2010 SMAC_SEL_V(ep
->smac_idx
) |
2011 DSCP_V(ep
->tos
>> 2) |
2012 ULP_MODE_V(ULP_MODE_TCPDDP
) |
2014 req
->tcb
.opt2
= (__force __be32
) (PACE_V(1) |
2015 TX_QUEUE_V(ep
->com
.dev
->rdev
.lldi
.tx_modq
[ep
->tx_chan
]) |
2017 CCTRL_ECN_V(enable_ecn
) |
2018 RSS_QUEUE_VALID_F
| RSS_QUEUE_V(ep
->rss_qid
));
2019 if (enable_tcp_timestamps
)
2020 req
->tcb
.opt2
|= (__force __be32
)TSTAMPS_EN_F
;
2021 if (enable_tcp_sack
)
2022 req
->tcb
.opt2
|= (__force __be32
)SACK_EN_F
;
2023 if (wscale
&& enable_tcp_window_scaling
)
2024 req
->tcb
.opt2
|= (__force __be32
)WND_SCALE_EN_F
;
2025 req
->tcb
.opt0
= cpu_to_be64((__force u64
)req
->tcb
.opt0
);
2026 req
->tcb
.opt2
= cpu_to_be32((__force u32
)req
->tcb
.opt2
);
2027 set_wr_txq(skb
, CPL_PRIORITY_CONTROL
, ep
->ctrlq_idx
);
2028 set_bit(ACT_OFLD_CONN
, &ep
->com
.history
);
2029 return c4iw_l2t_send(&ep
->com
.dev
->rdev
, skb
, ep
->l2t
);
2033 * Some of the error codes above implicitly indicate that there is no TID
2034 * allocated with the result of an ACT_OPEN. We use this predicate to make
2037 static inline int act_open_has_tid(int status
)
2039 return (status
!= CPL_ERR_TCAM_PARITY
&&
2040 status
!= CPL_ERR_TCAM_MISS
&&
2041 status
!= CPL_ERR_TCAM_FULL
&&
2042 status
!= CPL_ERR_CONN_EXIST_SYNRECV
&&
2043 status
!= CPL_ERR_CONN_EXIST
);
2046 static char *neg_adv_str(unsigned int status
)
2049 case CPL_ERR_RTX_NEG_ADVICE
:
2050 return "Retransmit timeout";
2051 case CPL_ERR_PERSIST_NEG_ADVICE
:
2052 return "Persist timeout";
2053 case CPL_ERR_KEEPALV_NEG_ADVICE
:
2054 return "Keepalive timeout";
2060 static void set_tcp_window(struct c4iw_ep
*ep
, struct port_info
*pi
)
2062 ep
->snd_win
= snd_win
;
2063 ep
->rcv_win
= rcv_win
;
2064 pr_debug("snd_win %d rcv_win %d\n",
2065 ep
->snd_win
, ep
->rcv_win
);
2068 #define ACT_OPEN_RETRY_COUNT 2
2070 static int import_ep(struct c4iw_ep
*ep
, int iptype
, __u8
*peer_ip
,
2071 struct dst_entry
*dst
, struct c4iw_dev
*cdev
,
2072 bool clear_mpa_v1
, enum chip_type adapter_type
, u8 tos
)
2074 struct neighbour
*n
;
2076 struct net_device
*pdev
;
2078 n
= dst_neigh_lookup(dst
, peer_ip
);
2084 if (n
->dev
->flags
& IFF_LOOPBACK
) {
2086 pdev
= ip_dev_find(&init_net
, *(__be32
*)peer_ip
);
2087 else if (IS_ENABLED(CONFIG_IPV6
))
2088 for_each_netdev(&init_net
, pdev
) {
2089 if (ipv6_chk_addr(&init_net
,
2090 (struct in6_addr
*)peer_ip
,
2101 ep
->l2t
= cxgb4_l2t_get(cdev
->rdev
.lldi
.l2t
,
2102 n
, pdev
, rt_tos2priority(tos
));
2107 ep
->mtu
= pdev
->mtu
;
2108 ep
->tx_chan
= cxgb4_port_chan(pdev
);
2109 ep
->smac_idx
= ((struct port_info
*)netdev_priv(pdev
))->smt_idx
;
2110 step
= cdev
->rdev
.lldi
.ntxq
/
2111 cdev
->rdev
.lldi
.nchan
;
2112 ep
->txq_idx
= cxgb4_port_idx(pdev
) * step
;
2113 step
= cdev
->rdev
.lldi
.nrxq
/
2114 cdev
->rdev
.lldi
.nchan
;
2115 ep
->ctrlq_idx
= cxgb4_port_idx(pdev
);
2116 ep
->rss_qid
= cdev
->rdev
.lldi
.rxq_ids
[
2117 cxgb4_port_idx(pdev
) * step
];
2118 set_tcp_window(ep
, (struct port_info
*)netdev_priv(pdev
));
2121 pdev
= get_real_dev(n
->dev
);
2122 ep
->l2t
= cxgb4_l2t_get(cdev
->rdev
.lldi
.l2t
,
2123 n
, pdev
, rt_tos2priority(tos
));
2126 ep
->mtu
= dst_mtu(dst
);
2127 ep
->tx_chan
= cxgb4_port_chan(pdev
);
2128 ep
->smac_idx
= ((struct port_info
*)netdev_priv(pdev
))->smt_idx
;
2129 step
= cdev
->rdev
.lldi
.ntxq
/
2130 cdev
->rdev
.lldi
.nchan
;
2131 ep
->txq_idx
= cxgb4_port_idx(pdev
) * step
;
2132 ep
->ctrlq_idx
= cxgb4_port_idx(pdev
);
2133 step
= cdev
->rdev
.lldi
.nrxq
/
2134 cdev
->rdev
.lldi
.nchan
;
2135 ep
->rss_qid
= cdev
->rdev
.lldi
.rxq_ids
[
2136 cxgb4_port_idx(pdev
) * step
];
2137 set_tcp_window(ep
, (struct port_info
*)netdev_priv(pdev
));
2140 ep
->retry_with_mpa_v1
= 0;
2141 ep
->tried_with_mpa_v1
= 0;
2153 static int c4iw_reconnect(struct c4iw_ep
*ep
)
2157 struct sockaddr_in
*laddr
= (struct sockaddr_in
*)
2158 &ep
->com
.cm_id
->m_local_addr
;
2159 struct sockaddr_in
*raddr
= (struct sockaddr_in
*)
2160 &ep
->com
.cm_id
->m_remote_addr
;
2161 struct sockaddr_in6
*laddr6
= (struct sockaddr_in6
*)
2162 &ep
->com
.cm_id
->m_local_addr
;
2163 struct sockaddr_in6
*raddr6
= (struct sockaddr_in6
*)
2164 &ep
->com
.cm_id
->m_remote_addr
;
2168 pr_debug("qp %p cm_id %p\n", ep
->com
.qp
, ep
->com
.cm_id
);
2169 c4iw_init_wr_wait(ep
->com
.wr_waitp
);
2171 /* When MPA revision is different on nodes, the node with MPA_rev=2
2172 * tries to reconnect with MPA_rev 1 for the same EP through
2173 * c4iw_reconnect(), where the same EP is assigned with new tid for
2174 * further connection establishment. As we are using the same EP pointer
2175 * for reconnect, few skbs are used during the previous c4iw_connect(),
2176 * which leaves the EP with inadequate skbs for further
2177 * c4iw_reconnect(), Further causing a crash due to an empty
2178 * skb_list() during peer_abort(). Allocate skbs which is already used.
2180 size
= (CN_MAX_CON_BUF
- skb_queue_len(&ep
->com
.ep_skb_list
));
2181 if (alloc_ep_skb_list(&ep
->com
.ep_skb_list
, size
)) {
2187 * Allocate an active TID to initiate a TCP connection.
2189 ep
->atid
= cxgb4_alloc_atid(ep
->com
.dev
->rdev
.lldi
.tids
, ep
);
2190 if (ep
->atid
== -1) {
2191 pr_err("%s - cannot alloc atid\n", __func__
);
2195 err
= xa_insert_irq(&ep
->com
.dev
->atids
, ep
->atid
, ep
, GFP_KERNEL
);
2200 if (ep
->com
.cm_id
->m_local_addr
.ss_family
== AF_INET
) {
2201 ep
->dst
= cxgb_find_route(&ep
->com
.dev
->rdev
.lldi
, get_real_dev
,
2202 laddr
->sin_addr
.s_addr
,
2203 raddr
->sin_addr
.s_addr
,
2205 raddr
->sin_port
, ep
->com
.cm_id
->tos
);
2207 ra
= (__u8
*)&raddr
->sin_addr
;
2209 ep
->dst
= cxgb_find_route6(&ep
->com
.dev
->rdev
.lldi
,
2211 laddr6
->sin6_addr
.s6_addr
,
2212 raddr6
->sin6_addr
.s6_addr
,
2216 raddr6
->sin6_scope_id
);
2218 ra
= (__u8
*)&raddr6
->sin6_addr
;
2221 pr_err("%s - cannot find route\n", __func__
);
2222 err
= -EHOSTUNREACH
;
2225 err
= import_ep(ep
, iptype
, ra
, ep
->dst
, ep
->com
.dev
, false,
2226 ep
->com
.dev
->rdev
.lldi
.adapter_type
,
2227 ep
->com
.cm_id
->tos
);
2229 pr_err("%s - cannot alloc l2e\n", __func__
);
2233 pr_debug("txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n",
2234 ep
->txq_idx
, ep
->tx_chan
, ep
->smac_idx
, ep
->rss_qid
,
2237 state_set(&ep
->com
, CONNECTING
);
2238 ep
->tos
= ep
->com
.cm_id
->tos
;
2240 /* send connect request to rnic */
2241 err
= send_connect(ep
);
2245 cxgb4_l2t_release(ep
->l2t
);
2247 dst_release(ep
->dst
);
2249 xa_erase_irq(&ep
->com
.dev
->atids
, ep
->atid
);
2251 cxgb4_free_atid(ep
->com
.dev
->rdev
.lldi
.tids
, ep
->atid
);
2254 * remember to send notification to upper layer.
2255 * We are in here so the upper layer is not aware that this is
2256 * re-connect attempt and so, upper layer is still waiting for
2257 * response of 1st connect request.
2259 connect_reply_upcall(ep
, -ECONNRESET
);
2261 c4iw_put_ep(&ep
->com
);
2266 static int act_open_rpl(struct c4iw_dev
*dev
, struct sk_buff
*skb
)
2269 struct cpl_act_open_rpl
*rpl
= cplhdr(skb
);
2270 unsigned int atid
= TID_TID_G(AOPEN_ATID_G(
2271 ntohl(rpl
->atid_status
)));
2272 struct tid_info
*t
= dev
->rdev
.lldi
.tids
;
2273 int status
= AOPEN_STATUS_G(ntohl(rpl
->atid_status
));
2274 struct sockaddr_in
*la
;
2275 struct sockaddr_in
*ra
;
2276 struct sockaddr_in6
*la6
;
2277 struct sockaddr_in6
*ra6
;
2280 ep
= lookup_atid(t
, atid
);
2281 la
= (struct sockaddr_in
*)&ep
->com
.local_addr
;
2282 ra
= (struct sockaddr_in
*)&ep
->com
.remote_addr
;
2283 la6
= (struct sockaddr_in6
*)&ep
->com
.local_addr
;
2284 ra6
= (struct sockaddr_in6
*)&ep
->com
.remote_addr
;
2286 pr_debug("ep %p atid %u status %u errno %d\n", ep
, atid
,
2287 status
, status2errno(status
));
2289 if (cxgb_is_neg_adv(status
)) {
2290 pr_debug("Connection problems for atid %u status %u (%s)\n",
2291 atid
, status
, neg_adv_str(status
));
2292 ep
->stats
.connect_neg_adv
++;
2293 mutex_lock(&dev
->rdev
.stats
.lock
);
2294 dev
->rdev
.stats
.neg_adv
++;
2295 mutex_unlock(&dev
->rdev
.stats
.lock
);
2299 set_bit(ACT_OPEN_RPL
, &ep
->com
.history
);
2302 * Log interesting failures.
2305 case CPL_ERR_CONN_RESET
:
2306 case CPL_ERR_CONN_TIMEDOUT
:
2308 case CPL_ERR_TCAM_FULL
:
2309 mutex_lock(&dev
->rdev
.stats
.lock
);
2310 dev
->rdev
.stats
.tcam_full
++;
2311 mutex_unlock(&dev
->rdev
.stats
.lock
);
2312 if (ep
->com
.local_addr
.ss_family
== AF_INET
&&
2313 dev
->rdev
.lldi
.enable_fw_ofld_conn
) {
2314 ret
= send_fw_act_open_req(ep
, TID_TID_G(AOPEN_ATID_G(
2315 ntohl(rpl
->atid_status
))));
2321 case CPL_ERR_CONN_EXIST
:
2322 if (ep
->retry_count
++ < ACT_OPEN_RETRY_COUNT
) {
2323 set_bit(ACT_RETRY_INUSE
, &ep
->com
.history
);
2324 if (ep
->com
.remote_addr
.ss_family
== AF_INET6
) {
2325 struct sockaddr_in6
*sin6
=
2326 (struct sockaddr_in6
*)
2327 &ep
->com
.local_addr
;
2329 ep
->com
.dev
->rdev
.lldi
.ports
[0],
2331 &sin6
->sin6_addr
.s6_addr
, 1);
2333 xa_erase_irq(&ep
->com
.dev
->atids
, atid
);
2334 cxgb4_free_atid(t
, atid
);
2335 dst_release(ep
->dst
);
2336 cxgb4_l2t_release(ep
->l2t
);
2342 if (ep
->com
.local_addr
.ss_family
== AF_INET
) {
2343 pr_info("Active open failure - atid %u status %u errno %d %pI4:%u->%pI4:%u\n",
2344 atid
, status
, status2errno(status
),
2345 &la
->sin_addr
.s_addr
, ntohs(la
->sin_port
),
2346 &ra
->sin_addr
.s_addr
, ntohs(ra
->sin_port
));
2348 pr_info("Active open failure - atid %u status %u errno %d %pI6:%u->%pI6:%u\n",
2349 atid
, status
, status2errno(status
),
2350 la6
->sin6_addr
.s6_addr
, ntohs(la6
->sin6_port
),
2351 ra6
->sin6_addr
.s6_addr
, ntohs(ra6
->sin6_port
));
2357 connect_reply_upcall(ep
, status2errno(status
));
2358 state_set(&ep
->com
, DEAD
);
2360 if (ep
->com
.remote_addr
.ss_family
== AF_INET6
) {
2361 struct sockaddr_in6
*sin6
=
2362 (struct sockaddr_in6
*)&ep
->com
.local_addr
;
2363 cxgb4_clip_release(ep
->com
.dev
->rdev
.lldi
.ports
[0],
2364 (const u32
*)&sin6
->sin6_addr
.s6_addr
, 1);
2366 if (status
&& act_open_has_tid(status
))
2367 cxgb4_remove_tid(ep
->com
.dev
->rdev
.lldi
.tids
, 0, GET_TID(rpl
),
2368 ep
->com
.local_addr
.ss_family
);
2370 xa_erase_irq(&ep
->com
.dev
->atids
, atid
);
2371 cxgb4_free_atid(t
, atid
);
2372 dst_release(ep
->dst
);
2373 cxgb4_l2t_release(ep
->l2t
);
2374 c4iw_put_ep(&ep
->com
);
2379 static int pass_open_rpl(struct c4iw_dev
*dev
, struct sk_buff
*skb
)
2381 struct cpl_pass_open_rpl
*rpl
= cplhdr(skb
);
2382 unsigned int stid
= GET_TID(rpl
);
2383 struct c4iw_listen_ep
*ep
= get_ep_from_stid(dev
, stid
);
2386 pr_warn("%s stid %d lookup failure!\n", __func__
, stid
);
2389 pr_debug("ep %p status %d error %d\n", ep
,
2390 rpl
->status
, status2errno(rpl
->status
));
2391 c4iw_wake_up_noref(ep
->com
.wr_waitp
, status2errno(rpl
->status
));
2392 c4iw_put_ep(&ep
->com
);
2397 static int close_listsrv_rpl(struct c4iw_dev
*dev
, struct sk_buff
*skb
)
2399 struct cpl_close_listsvr_rpl
*rpl
= cplhdr(skb
);
2400 unsigned int stid
= GET_TID(rpl
);
2401 struct c4iw_listen_ep
*ep
= get_ep_from_stid(dev
, stid
);
2404 pr_warn("%s stid %d lookup failure!\n", __func__
, stid
);
2407 pr_debug("ep %p\n", ep
);
2408 c4iw_wake_up_noref(ep
->com
.wr_waitp
, status2errno(rpl
->status
));
2409 c4iw_put_ep(&ep
->com
);
2414 static int accept_cr(struct c4iw_ep
*ep
, struct sk_buff
*skb
,
2415 struct cpl_pass_accept_req
*req
)
2417 struct cpl_pass_accept_rpl
*rpl
;
2418 unsigned int mtu_idx
;
2422 struct cpl_t5_pass_accept_rpl
*rpl5
= NULL
;
2424 enum chip_type adapter_type
= ep
->com
.dev
->rdev
.lldi
.adapter_type
;
2426 pr_debug("ep %p tid %u\n", ep
, ep
->hwtid
);
2430 if (!is_t4(adapter_type
)) {
2431 skb_trim(skb
, roundup(sizeof(*rpl5
), 16));
2433 INIT_TP_WR(rpl5
, ep
->hwtid
);
2435 skb_trim(skb
, sizeof(*rpl
));
2436 INIT_TP_WR(rpl
, ep
->hwtid
);
2438 OPCODE_TID(rpl
) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL
,
2441 cxgb_best_mtu(ep
->com
.dev
->rdev
.lldi
.mtus
, ep
->mtu
, &mtu_idx
,
2442 enable_tcp_timestamps
&& req
->tcpopt
.tstamp
,
2443 (ep
->com
.remote_addr
.ss_family
== AF_INET
) ? 0 : 1);
2444 wscale
= cxgb_compute_wscale(rcv_win
);
2447 * Specify the largest window that will fit in opt0. The
2448 * remainder will be specified in the rx_data_ack.
2450 win
= ep
->rcv_win
>> 10;
2451 if (win
> RCV_BUFSIZ_M
)
2453 opt0
= (nocong
? NO_CONG_F
: 0) |
2456 WND_SCALE_V(wscale
) |
2457 MSS_IDX_V(mtu_idx
) |
2458 L2T_IDX_V(ep
->l2t
->idx
) |
2459 TX_CHAN_V(ep
->tx_chan
) |
2460 SMAC_SEL_V(ep
->smac_idx
) |
2461 DSCP_V(ep
->tos
>> 2) |
2462 ULP_MODE_V(ULP_MODE_TCPDDP
) |
2464 opt2
= RX_CHANNEL_V(0) |
2465 RSS_QUEUE_VALID_F
| RSS_QUEUE_V(ep
->rss_qid
);
2467 if (enable_tcp_timestamps
&& req
->tcpopt
.tstamp
)
2468 opt2
|= TSTAMPS_EN_F
;
2469 if (enable_tcp_sack
&& req
->tcpopt
.sack
)
2471 if (wscale
&& enable_tcp_window_scaling
)
2472 opt2
|= WND_SCALE_EN_F
;
2474 const struct tcphdr
*tcph
;
2475 u32 hlen
= ntohl(req
->hdr_len
);
2477 if (CHELSIO_CHIP_VERSION(adapter_type
) <= CHELSIO_T5
)
2478 tcph
= (const void *)(req
+ 1) + ETH_HDR_LEN_G(hlen
) +
2481 tcph
= (const void *)(req
+ 1) +
2482 T6_ETH_HDR_LEN_G(hlen
) + T6_IP_HDR_LEN_G(hlen
);
2483 if (tcph
->ece
&& tcph
->cwr
)
2484 opt2
|= CCTRL_ECN_V(1);
2486 if (CHELSIO_CHIP_VERSION(adapter_type
) > CHELSIO_T4
) {
2487 u32 isn
= (prandom_u32() & ~7UL) - 1;
2488 opt2
|= T5_OPT_2_VALID_F
;
2489 opt2
|= CONG_CNTRL_V(CONG_ALG_TAHOE
);
2492 memset(&rpl5
->iss
, 0, roundup(sizeof(*rpl5
)-sizeof(*rpl
), 16));
2495 rpl5
->iss
= cpu_to_be32(isn
);
2496 pr_debug("iss %u\n", be32_to_cpu(rpl5
->iss
));
2499 rpl
->opt0
= cpu_to_be64(opt0
);
2500 rpl
->opt2
= cpu_to_be32(opt2
);
2501 set_wr_txq(skb
, CPL_PRIORITY_SETUP
, ep
->ctrlq_idx
);
2502 t4_set_arp_err_handler(skb
, ep
, pass_accept_rpl_arp_failure
);
2504 return c4iw_l2t_send(&ep
->com
.dev
->rdev
, skb
, ep
->l2t
);
2507 static void reject_cr(struct c4iw_dev
*dev
, u32 hwtid
, struct sk_buff
*skb
)
2509 pr_debug("c4iw_dev %p tid %u\n", dev
, hwtid
);
2510 skb_trim(skb
, sizeof(struct cpl_tid_release
));
2511 release_tid(&dev
->rdev
, hwtid
, skb
);
2515 static int pass_accept_req(struct c4iw_dev
*dev
, struct sk_buff
*skb
)
2517 struct c4iw_ep
*child_ep
= NULL
, *parent_ep
;
2518 struct cpl_pass_accept_req
*req
= cplhdr(skb
);
2519 unsigned int stid
= PASS_OPEN_TID_G(ntohl(req
->tos_stid
));
2520 struct tid_info
*t
= dev
->rdev
.lldi
.tids
;
2521 unsigned int hwtid
= GET_TID(req
);
2522 struct dst_entry
*dst
;
2523 __u8 local_ip
[16], peer_ip
[16];
2524 __be16 local_port
, peer_port
;
2525 struct sockaddr_in6
*sin6
;
2527 u16 peer_mss
= ntohs(req
->tcpopt
.mss
);
2529 unsigned short hdrs
;
2532 parent_ep
= (struct c4iw_ep
*)get_ep_from_stid(dev
, stid
);
2534 pr_err("%s connect request on invalid stid %d\n",
2539 if (state_read(&parent_ep
->com
) != LISTEN
) {
2540 pr_err("%s - listening ep not in LISTEN\n", __func__
);
2544 if (parent_ep
->com
.cm_id
->tos_set
)
2545 tos
= parent_ep
->com
.cm_id
->tos
;
2547 tos
= PASS_OPEN_TOS_G(ntohl(req
->tos_stid
));
2549 cxgb_get_4tuple(req
, parent_ep
->com
.dev
->rdev
.lldi
.adapter_type
,
2550 &iptype
, local_ip
, peer_ip
, &local_port
, &peer_port
);
2552 /* Find output route */
2554 pr_debug("parent ep %p hwtid %u laddr %pI4 raddr %pI4 lport %d rport %d peer_mss %d\n"
2556 local_ip
, peer_ip
, ntohs(local_port
),
2557 ntohs(peer_port
), peer_mss
);
2558 dst
= cxgb_find_route(&dev
->rdev
.lldi
, get_real_dev
,
2559 *(__be32
*)local_ip
, *(__be32
*)peer_ip
,
2560 local_port
, peer_port
, tos
);
2562 pr_debug("parent ep %p hwtid %u laddr %pI6 raddr %pI6 lport %d rport %d peer_mss %d\n"
2564 local_ip
, peer_ip
, ntohs(local_port
),
2565 ntohs(peer_port
), peer_mss
);
2566 dst
= cxgb_find_route6(&dev
->rdev
.lldi
, get_real_dev
,
2567 local_ip
, peer_ip
, local_port
, peer_port
,
2569 ((struct sockaddr_in6
*)
2570 &parent_ep
->com
.local_addr
)->sin6_scope_id
);
2573 pr_err("%s - failed to find dst entry!\n", __func__
);
2577 child_ep
= alloc_ep(sizeof(*child_ep
), GFP_KERNEL
);
2579 pr_err("%s - failed to allocate ep entry!\n", __func__
);
2584 err
= import_ep(child_ep
, iptype
, peer_ip
, dst
, dev
, false,
2585 parent_ep
->com
.dev
->rdev
.lldi
.adapter_type
, tos
);
2587 pr_err("%s - failed to allocate l2t entry!\n", __func__
);
2593 hdrs
= ((iptype
== 4) ? sizeof(struct iphdr
) : sizeof(struct ipv6hdr
)) +
2594 sizeof(struct tcphdr
) +
2595 ((enable_tcp_timestamps
&& req
->tcpopt
.tstamp
) ? 12 : 0);
2596 if (peer_mss
&& child_ep
->mtu
> (peer_mss
+ hdrs
))
2597 child_ep
->mtu
= peer_mss
+ hdrs
;
2599 skb_queue_head_init(&child_ep
->com
.ep_skb_list
);
2600 if (alloc_ep_skb_list(&child_ep
->com
.ep_skb_list
, CN_MAX_CON_BUF
))
2603 state_set(&child_ep
->com
, CONNECTING
);
2604 child_ep
->com
.dev
= dev
;
2605 child_ep
->com
.cm_id
= NULL
;
2608 struct sockaddr_in
*sin
= (struct sockaddr_in
*)
2609 &child_ep
->com
.local_addr
;
2611 sin
->sin_family
= AF_INET
;
2612 sin
->sin_port
= local_port
;
2613 sin
->sin_addr
.s_addr
= *(__be32
*)local_ip
;
2615 sin
= (struct sockaddr_in
*)&child_ep
->com
.local_addr
;
2616 sin
->sin_family
= AF_INET
;
2617 sin
->sin_port
= ((struct sockaddr_in
*)
2618 &parent_ep
->com
.local_addr
)->sin_port
;
2619 sin
->sin_addr
.s_addr
= *(__be32
*)local_ip
;
2621 sin
= (struct sockaddr_in
*)&child_ep
->com
.remote_addr
;
2622 sin
->sin_family
= AF_INET
;
2623 sin
->sin_port
= peer_port
;
2624 sin
->sin_addr
.s_addr
= *(__be32
*)peer_ip
;
2626 sin6
= (struct sockaddr_in6
*)&child_ep
->com
.local_addr
;
2627 sin6
->sin6_family
= PF_INET6
;
2628 sin6
->sin6_port
= local_port
;
2629 memcpy(sin6
->sin6_addr
.s6_addr
, local_ip
, 16);
2631 sin6
= (struct sockaddr_in6
*)&child_ep
->com
.local_addr
;
2632 sin6
->sin6_family
= PF_INET6
;
2633 sin6
->sin6_port
= ((struct sockaddr_in6
*)
2634 &parent_ep
->com
.local_addr
)->sin6_port
;
2635 memcpy(sin6
->sin6_addr
.s6_addr
, local_ip
, 16);
2637 sin6
= (struct sockaddr_in6
*)&child_ep
->com
.remote_addr
;
2638 sin6
->sin6_family
= PF_INET6
;
2639 sin6
->sin6_port
= peer_port
;
2640 memcpy(sin6
->sin6_addr
.s6_addr
, peer_ip
, 16);
2643 c4iw_get_ep(&parent_ep
->com
);
2644 child_ep
->parent_ep
= parent_ep
;
2645 child_ep
->tos
= tos
;
2646 child_ep
->dst
= dst
;
2647 child_ep
->hwtid
= hwtid
;
2649 pr_debug("tx_chan %u smac_idx %u rss_qid %u\n",
2650 child_ep
->tx_chan
, child_ep
->smac_idx
, child_ep
->rss_qid
);
2652 timer_setup(&child_ep
->timer
, ep_timeout
, 0);
2653 cxgb4_insert_tid(t
, child_ep
, hwtid
,
2654 child_ep
->com
.local_addr
.ss_family
);
2655 insert_ep_tid(child_ep
);
2656 if (accept_cr(child_ep
, skb
, req
)) {
2657 c4iw_put_ep(&parent_ep
->com
);
2658 release_ep_resources(child_ep
);
2660 set_bit(PASS_ACCEPT_REQ
, &child_ep
->com
.history
);
2663 sin6
= (struct sockaddr_in6
*)&child_ep
->com
.local_addr
;
2664 cxgb4_clip_get(child_ep
->com
.dev
->rdev
.lldi
.ports
[0],
2665 (const u32
*)&sin6
->sin6_addr
.s6_addr
, 1);
2669 c4iw_put_ep(&child_ep
->com
);
2671 reject_cr(dev
, hwtid
, skb
);
2674 c4iw_put_ep(&parent_ep
->com
);
2678 static int pass_establish(struct c4iw_dev
*dev
, struct sk_buff
*skb
)
2681 struct cpl_pass_establish
*req
= cplhdr(skb
);
2682 unsigned int tid
= GET_TID(req
);
2684 u16 tcp_opt
= ntohs(req
->tcp_opt
);
2686 ep
= get_ep_from_tid(dev
, tid
);
2687 pr_debug("ep %p tid %u\n", ep
, ep
->hwtid
);
2688 ep
->snd_seq
= be32_to_cpu(req
->snd_isn
);
2689 ep
->rcv_seq
= be32_to_cpu(req
->rcv_isn
);
2690 ep
->snd_wscale
= TCPOPT_SND_WSCALE_G(tcp_opt
);
2692 pr_debug("ep %p hwtid %u tcp_opt 0x%02x\n", ep
, tid
, tcp_opt
);
2694 set_emss(ep
, tcp_opt
);
2696 dst_confirm(ep
->dst
);
2697 mutex_lock(&ep
->com
.mutex
);
2698 ep
->com
.state
= MPA_REQ_WAIT
;
2700 set_bit(PASS_ESTAB
, &ep
->com
.history
);
2701 ret
= send_flowc(ep
);
2702 mutex_unlock(&ep
->com
.mutex
);
2704 c4iw_ep_disconnect(ep
, 1, GFP_KERNEL
);
2705 c4iw_put_ep(&ep
->com
);
2710 static int peer_close(struct c4iw_dev
*dev
, struct sk_buff
*skb
)
2712 struct cpl_peer_close
*hdr
= cplhdr(skb
);
2714 struct c4iw_qp_attributes attrs
;
2717 unsigned int tid
= GET_TID(hdr
);
2720 ep
= get_ep_from_tid(dev
, tid
);
2724 pr_debug("ep %p tid %u\n", ep
, ep
->hwtid
);
2725 dst_confirm(ep
->dst
);
2727 set_bit(PEER_CLOSE
, &ep
->com
.history
);
2728 mutex_lock(&ep
->com
.mutex
);
2729 switch (ep
->com
.state
) {
2731 __state_set(&ep
->com
, CLOSING
);
2734 __state_set(&ep
->com
, CLOSING
);
2735 connect_reply_upcall(ep
, -ECONNRESET
);
2740 * We're gonna mark this puppy DEAD, but keep
2741 * the reference on it until the ULP accepts or
2742 * rejects the CR. Also wake up anyone waiting
2743 * in rdma connection migration (see c4iw_accept_cr()).
2745 __state_set(&ep
->com
, CLOSING
);
2746 pr_debug("waking up ep %p tid %u\n", ep
, ep
->hwtid
);
2747 c4iw_wake_up_noref(ep
->com
.wr_waitp
, -ECONNRESET
);
2750 __state_set(&ep
->com
, CLOSING
);
2751 pr_debug("waking up ep %p tid %u\n", ep
, ep
->hwtid
);
2752 c4iw_wake_up_noref(ep
->com
.wr_waitp
, -ECONNRESET
);
2756 __state_set(&ep
->com
, CLOSING
);
2757 attrs
.next_state
= C4IW_QP_STATE_CLOSING
;
2758 ret
= c4iw_modify_qp(ep
->com
.qp
->rhp
, ep
->com
.qp
,
2759 C4IW_QP_ATTR_NEXT_STATE
, &attrs
, 1);
2760 if (ret
!= -ECONNRESET
) {
2761 peer_close_upcall(ep
);
2769 __state_set(&ep
->com
, MORIBUND
);
2773 (void)stop_ep_timer(ep
);
2774 if (ep
->com
.cm_id
&& ep
->com
.qp
) {
2775 attrs
.next_state
= C4IW_QP_STATE_IDLE
;
2776 c4iw_modify_qp(ep
->com
.qp
->rhp
, ep
->com
.qp
,
2777 C4IW_QP_ATTR_NEXT_STATE
, &attrs
, 1);
2779 close_complete_upcall(ep
, 0);
2780 __state_set(&ep
->com
, DEAD
);
2788 WARN_ONCE(1, "Bad endpoint state %u\n", ep
->com
.state
);
2790 mutex_unlock(&ep
->com
.mutex
);
2792 c4iw_ep_disconnect(ep
, 0, GFP_KERNEL
);
2794 release_ep_resources(ep
);
2795 c4iw_put_ep(&ep
->com
);
2799 static void finish_peer_abort(struct c4iw_dev
*dev
, struct c4iw_ep
*ep
)
2801 complete_cached_srq_buffers(ep
, ep
->srqe_idx
);
2802 if (ep
->com
.cm_id
&& ep
->com
.qp
) {
2803 struct c4iw_qp_attributes attrs
;
2805 attrs
.next_state
= C4IW_QP_STATE_ERROR
;
2806 c4iw_modify_qp(ep
->com
.qp
->rhp
, ep
->com
.qp
,
2807 C4IW_QP_ATTR_NEXT_STATE
, &attrs
, 1);
2809 peer_abort_upcall(ep
);
2810 release_ep_resources(ep
);
2811 c4iw_put_ep(&ep
->com
);
2814 static int peer_abort(struct c4iw_dev
*dev
, struct sk_buff
*skb
)
2816 struct cpl_abort_req_rss6
*req
= cplhdr(skb
);
2818 struct sk_buff
*rpl_skb
;
2819 struct c4iw_qp_attributes attrs
;
2822 unsigned int tid
= GET_TID(req
);
2826 u32 len
= roundup(sizeof(struct cpl_abort_rpl
), 16);
2828 ep
= get_ep_from_tid(dev
, tid
);
2832 status
= ABORT_RSS_STATUS_G(be32_to_cpu(req
->srqidx_status
));
2834 if (cxgb_is_neg_adv(status
)) {
2835 pr_debug("Negative advice on abort- tid %u status %d (%s)\n",
2836 ep
->hwtid
, status
, neg_adv_str(status
));
2837 ep
->stats
.abort_neg_adv
++;
2838 mutex_lock(&dev
->rdev
.stats
.lock
);
2839 dev
->rdev
.stats
.neg_adv
++;
2840 mutex_unlock(&dev
->rdev
.stats
.lock
);
2844 pr_debug("ep %p tid %u state %u\n", ep
, ep
->hwtid
,
2846 set_bit(PEER_ABORT
, &ep
->com
.history
);
2849 * Wake up any threads in rdma_init() or rdma_fini().
2850 * However, this is not needed if com state is just
2853 if (ep
->com
.state
!= MPA_REQ_SENT
)
2854 c4iw_wake_up_noref(ep
->com
.wr_waitp
, -ECONNRESET
);
2856 mutex_lock(&ep
->com
.mutex
);
2857 switch (ep
->com
.state
) {
2859 c4iw_put_ep(&ep
->parent_ep
->com
);
2862 (void)stop_ep_timer(ep
);
2865 (void)stop_ep_timer(ep
);
2866 if (status
!= CPL_ERR_CONN_RESET
|| mpa_rev
== 1 ||
2867 (mpa_rev
== 2 && ep
->tried_with_mpa_v1
))
2868 connect_reply_upcall(ep
, -ECONNRESET
);
2871 * we just don't send notification upwards because we
2872 * want to retry with mpa_v1 without upper layers even
2875 * do some housekeeping so as to re-initiate the
2878 pr_info("%s: mpa_rev=%d. Retrying with mpav1\n",
2880 ep
->retry_with_mpa_v1
= 1;
2892 if (ep
->com
.qp
&& ep
->com
.qp
->srq
) {
2893 srqidx
= ABORT_RSS_SRQIDX_G(
2894 be32_to_cpu(req
->srqidx_status
));
2896 complete_cached_srq_buffers(ep
,
2897 req
->srqidx_status
);
2899 /* Hold ep ref until finish_peer_abort() */
2900 c4iw_get_ep(&ep
->com
);
2901 __state_set(&ep
->com
, ABORTING
);
2902 set_bit(PEER_ABORT_IN_PROGRESS
, &ep
->com
.flags
);
2909 if (ep
->com
.cm_id
&& ep
->com
.qp
) {
2910 attrs
.next_state
= C4IW_QP_STATE_ERROR
;
2911 ret
= c4iw_modify_qp(ep
->com
.qp
->rhp
,
2912 ep
->com
.qp
, C4IW_QP_ATTR_NEXT_STATE
,
2915 pr_err("%s - qp <- error failed!\n", __func__
);
2917 peer_abort_upcall(ep
);
2922 pr_warn("%s PEER_ABORT IN DEAD STATE!!!!\n", __func__
);
2923 mutex_unlock(&ep
->com
.mutex
);
2926 WARN_ONCE(1, "Bad endpoint state %u\n", ep
->com
.state
);
2929 dst_confirm(ep
->dst
);
2930 if (ep
->com
.state
!= ABORTING
) {
2931 __state_set(&ep
->com
, DEAD
);
2932 /* we don't release if we want to retry with mpa_v1 */
2933 if (!ep
->retry_with_mpa_v1
)
2936 mutex_unlock(&ep
->com
.mutex
);
2938 rpl_skb
= skb_dequeue(&ep
->com
.ep_skb_list
);
2939 if (WARN_ON(!rpl_skb
)) {
2944 cxgb_mk_abort_rpl(rpl_skb
, len
, ep
->hwtid
, ep
->txq_idx
);
2946 c4iw_ofld_send(&ep
->com
.dev
->rdev
, rpl_skb
);
2949 release_ep_resources(ep
);
2950 else if (ep
->retry_with_mpa_v1
) {
2951 if (ep
->com
.remote_addr
.ss_family
== AF_INET6
) {
2952 struct sockaddr_in6
*sin6
=
2953 (struct sockaddr_in6
*)
2954 &ep
->com
.local_addr
;
2956 ep
->com
.dev
->rdev
.lldi
.ports
[0],
2957 (const u32
*)&sin6
->sin6_addr
.s6_addr
,
2960 xa_erase_irq(&ep
->com
.dev
->hwtids
, ep
->hwtid
);
2961 cxgb4_remove_tid(ep
->com
.dev
->rdev
.lldi
.tids
, 0, ep
->hwtid
,
2962 ep
->com
.local_addr
.ss_family
);
2963 dst_release(ep
->dst
);
2964 cxgb4_l2t_release(ep
->l2t
);
2969 c4iw_put_ep(&ep
->com
);
2970 /* Dereferencing ep, referenced in peer_abort_intr() */
2971 c4iw_put_ep(&ep
->com
);
2975 static int close_con_rpl(struct c4iw_dev
*dev
, struct sk_buff
*skb
)
2978 struct c4iw_qp_attributes attrs
;
2979 struct cpl_close_con_rpl
*rpl
= cplhdr(skb
);
2981 unsigned int tid
= GET_TID(rpl
);
2983 ep
= get_ep_from_tid(dev
, tid
);
2987 pr_debug("ep %p tid %u\n", ep
, ep
->hwtid
);
2989 /* The cm_id may be null if we failed to connect */
2990 mutex_lock(&ep
->com
.mutex
);
2991 set_bit(CLOSE_CON_RPL
, &ep
->com
.history
);
2992 switch (ep
->com
.state
) {
2994 __state_set(&ep
->com
, MORIBUND
);
2997 (void)stop_ep_timer(ep
);
2998 if ((ep
->com
.cm_id
) && (ep
->com
.qp
)) {
2999 attrs
.next_state
= C4IW_QP_STATE_IDLE
;
3000 c4iw_modify_qp(ep
->com
.qp
->rhp
,
3002 C4IW_QP_ATTR_NEXT_STATE
,
3005 close_complete_upcall(ep
, 0);
3006 __state_set(&ep
->com
, DEAD
);
3013 WARN_ONCE(1, "Bad endpoint state %u\n", ep
->com
.state
);
3016 mutex_unlock(&ep
->com
.mutex
);
3018 release_ep_resources(ep
);
3019 c4iw_put_ep(&ep
->com
);
3023 static int terminate(struct c4iw_dev
*dev
, struct sk_buff
*skb
)
3025 struct cpl_rdma_terminate
*rpl
= cplhdr(skb
);
3026 unsigned int tid
= GET_TID(rpl
);
3028 struct c4iw_qp_attributes attrs
;
3030 ep
= get_ep_from_tid(dev
, tid
);
3034 pr_warn("TERM received tid %u qpid %u\n", tid
,
3035 ep
->com
.qp
->wq
.sq
.qid
);
3036 attrs
.next_state
= C4IW_QP_STATE_TERMINATE
;
3037 c4iw_modify_qp(ep
->com
.qp
->rhp
, ep
->com
.qp
,
3038 C4IW_QP_ATTR_NEXT_STATE
, &attrs
, 1);
3041 c4iw_put_ep(&ep
->com
);
3043 pr_warn("TERM received tid %u no ep/qp\n", tid
);
3049 * Upcall from the adapter indicating data has been transmitted.
3050 * For us its just the single MPA request or reply. We can now free
3051 * the skb holding the mpa message.
3053 static int fw4_ack(struct c4iw_dev
*dev
, struct sk_buff
*skb
)
3056 struct cpl_fw4_ack
*hdr
= cplhdr(skb
);
3057 u8 credits
= hdr
->credits
;
3058 unsigned int tid
= GET_TID(hdr
);
3061 ep
= get_ep_from_tid(dev
, tid
);
3064 pr_debug("ep %p tid %u credits %u\n",
3065 ep
, ep
->hwtid
, credits
);
3067 pr_debug("0 credit ack ep %p tid %u state %u\n",
3068 ep
, ep
->hwtid
, state_read(&ep
->com
));
3072 dst_confirm(ep
->dst
);
3074 pr_debug("last streaming msg ack ep %p tid %u state %u initiator %u freeing skb\n",
3075 ep
, ep
->hwtid
, state_read(&ep
->com
),
3076 ep
->mpa_attr
.initiator
? 1 : 0);
3077 mutex_lock(&ep
->com
.mutex
);
3078 kfree_skb(ep
->mpa_skb
);
3080 if (test_bit(STOP_MPA_TIMER
, &ep
->com
.flags
))
3082 mutex_unlock(&ep
->com
.mutex
);
3085 c4iw_put_ep(&ep
->com
);
3089 int c4iw_reject_cr(struct iw_cm_id
*cm_id
, const void *pdata
, u8 pdata_len
)
3092 struct c4iw_ep
*ep
= to_ep(cm_id
);
3094 pr_debug("ep %p tid %u\n", ep
, ep
->hwtid
);
3096 mutex_lock(&ep
->com
.mutex
);
3097 if (ep
->com
.state
!= MPA_REQ_RCVD
) {
3098 mutex_unlock(&ep
->com
.mutex
);
3099 c4iw_put_ep(&ep
->com
);
3102 set_bit(ULP_REJECT
, &ep
->com
.history
);
3106 abort
= send_mpa_reject(ep
, pdata
, pdata_len
);
3107 mutex_unlock(&ep
->com
.mutex
);
3110 c4iw_ep_disconnect(ep
, abort
!= 0, GFP_KERNEL
);
3111 c4iw_put_ep(&ep
->com
);
3115 int c4iw_accept_cr(struct iw_cm_id
*cm_id
, struct iw_cm_conn_param
*conn_param
)
3118 struct c4iw_qp_attributes attrs
;
3119 enum c4iw_qp_attr_mask mask
;
3120 struct c4iw_ep
*ep
= to_ep(cm_id
);
3121 struct c4iw_dev
*h
= to_c4iw_dev(cm_id
->device
);
3122 struct c4iw_qp
*qp
= get_qhp(h
, conn_param
->qpn
);
3125 pr_debug("ep %p tid %u\n", ep
, ep
->hwtid
);
3127 mutex_lock(&ep
->com
.mutex
);
3128 if (ep
->com
.state
!= MPA_REQ_RCVD
) {
3138 set_bit(ULP_ACCEPT
, &ep
->com
.history
);
3139 if ((conn_param
->ord
> cur_max_read_depth(ep
->com
.dev
)) ||
3140 (conn_param
->ird
> cur_max_read_depth(ep
->com
.dev
))) {
3145 if (ep
->mpa_attr
.version
== 2 && ep
->mpa_attr
.enhanced_rdma_conn
) {
3146 if (conn_param
->ord
> ep
->ird
) {
3147 if (RELAXED_IRD_NEGOTIATION
) {
3148 conn_param
->ord
= ep
->ird
;
3150 ep
->ird
= conn_param
->ird
;
3151 ep
->ord
= conn_param
->ord
;
3152 send_mpa_reject(ep
, conn_param
->private_data
,
3153 conn_param
->private_data_len
);
3158 if (conn_param
->ird
< ep
->ord
) {
3159 if (RELAXED_IRD_NEGOTIATION
&&
3160 ep
->ord
<= h
->rdev
.lldi
.max_ordird_qp
) {
3161 conn_param
->ird
= ep
->ord
;
3168 ep
->ird
= conn_param
->ird
;
3169 ep
->ord
= conn_param
->ord
;
3171 if (ep
->mpa_attr
.version
== 1) {
3172 if (peer2peer
&& ep
->ird
== 0)
3176 (ep
->mpa_attr
.p2p_type
!= FW_RI_INIT_P2PTYPE_DISABLED
) &&
3177 (p2p_type
== FW_RI_INIT_P2PTYPE_READ_REQ
) && ep
->ird
== 0)
3181 pr_debug("ird %d ord %d\n", ep
->ird
, ep
->ord
);
3183 ep
->com
.cm_id
= cm_id
;
3184 ref_cm_id(&ep
->com
);
3188 /* bind QP to EP and move to RTS */
3189 attrs
.mpa_attr
= ep
->mpa_attr
;
3190 attrs
.max_ird
= ep
->ird
;
3191 attrs
.max_ord
= ep
->ord
;
3192 attrs
.llp_stream_handle
= ep
;
3193 attrs
.next_state
= C4IW_QP_STATE_RTS
;
3195 /* bind QP and TID with INIT_WR */
3196 mask
= C4IW_QP_ATTR_NEXT_STATE
|
3197 C4IW_QP_ATTR_LLP_STREAM_HANDLE
|
3198 C4IW_QP_ATTR_MPA_ATTR
|
3199 C4IW_QP_ATTR_MAX_IRD
|
3200 C4IW_QP_ATTR_MAX_ORD
;
3202 err
= c4iw_modify_qp(ep
->com
.qp
->rhp
,
3203 ep
->com
.qp
, mask
, &attrs
, 1);
3205 goto err_deref_cm_id
;
3207 set_bit(STOP_MPA_TIMER
, &ep
->com
.flags
);
3208 err
= send_mpa_reply(ep
, conn_param
->private_data
,
3209 conn_param
->private_data_len
);
3211 goto err_deref_cm_id
;
3213 __state_set(&ep
->com
, FPDU_MODE
);
3214 established_upcall(ep
);
3215 mutex_unlock(&ep
->com
.mutex
);
3216 c4iw_put_ep(&ep
->com
);
3219 deref_cm_id(&ep
->com
);
3223 mutex_unlock(&ep
->com
.mutex
);
3225 c4iw_ep_disconnect(ep
, 1, GFP_KERNEL
);
3226 c4iw_put_ep(&ep
->com
);
3230 static int pick_local_ipaddrs(struct c4iw_dev
*dev
, struct iw_cm_id
*cm_id
)
3232 struct in_device
*ind
;
3234 struct sockaddr_in
*laddr
= (struct sockaddr_in
*)&cm_id
->m_local_addr
;
3235 struct sockaddr_in
*raddr
= (struct sockaddr_in
*)&cm_id
->m_remote_addr
;
3236 const struct in_ifaddr
*ifa
;
3238 ind
= in_dev_get(dev
->rdev
.lldi
.ports
[0]);
3240 return -EADDRNOTAVAIL
;
3242 in_dev_for_each_ifa_rcu(ifa
, ind
) {
3243 if (ifa
->ifa_flags
& IFA_F_SECONDARY
)
3245 laddr
->sin_addr
.s_addr
= ifa
->ifa_address
;
3246 raddr
->sin_addr
.s_addr
= ifa
->ifa_address
;
3253 return found
? 0 : -EADDRNOTAVAIL
;
3256 static int get_lladdr(struct net_device
*dev
, struct in6_addr
*addr
,
3257 unsigned char banned_flags
)
3259 struct inet6_dev
*idev
;
3260 int err
= -EADDRNOTAVAIL
;
3263 idev
= __in6_dev_get(dev
);
3265 struct inet6_ifaddr
*ifp
;
3267 read_lock_bh(&idev
->lock
);
3268 list_for_each_entry(ifp
, &idev
->addr_list
, if_list
) {
3269 if (ifp
->scope
== IFA_LINK
&&
3270 !(ifp
->flags
& banned_flags
)) {
3271 memcpy(addr
, &ifp
->addr
, 16);
3276 read_unlock_bh(&idev
->lock
);
3282 static int pick_local_ip6addrs(struct c4iw_dev
*dev
, struct iw_cm_id
*cm_id
)
3284 struct in6_addr
uninitialized_var(addr
);
3285 struct sockaddr_in6
*la6
= (struct sockaddr_in6
*)&cm_id
->m_local_addr
;
3286 struct sockaddr_in6
*ra6
= (struct sockaddr_in6
*)&cm_id
->m_remote_addr
;
3288 if (!get_lladdr(dev
->rdev
.lldi
.ports
[0], &addr
, IFA_F_TENTATIVE
)) {
3289 memcpy(la6
->sin6_addr
.s6_addr
, &addr
, 16);
3290 memcpy(ra6
->sin6_addr
.s6_addr
, &addr
, 16);
3293 return -EADDRNOTAVAIL
;
3296 int c4iw_connect(struct iw_cm_id
*cm_id
, struct iw_cm_conn_param
*conn_param
)
3298 struct c4iw_dev
*dev
= to_c4iw_dev(cm_id
->device
);
3301 struct sockaddr_in
*laddr
;
3302 struct sockaddr_in
*raddr
;
3303 struct sockaddr_in6
*laddr6
;
3304 struct sockaddr_in6
*raddr6
;
3308 if ((conn_param
->ord
> cur_max_read_depth(dev
)) ||
3309 (conn_param
->ird
> cur_max_read_depth(dev
))) {
3313 ep
= alloc_ep(sizeof(*ep
), GFP_KERNEL
);
3315 pr_err("%s - cannot alloc ep\n", __func__
);
3320 skb_queue_head_init(&ep
->com
.ep_skb_list
);
3321 if (alloc_ep_skb_list(&ep
->com
.ep_skb_list
, CN_MAX_CON_BUF
)) {
3326 timer_setup(&ep
->timer
, ep_timeout
, 0);
3327 ep
->plen
= conn_param
->private_data_len
;
3329 memcpy(ep
->mpa_pkt
+ sizeof(struct mpa_message
),
3330 conn_param
->private_data
, ep
->plen
);
3331 ep
->ird
= conn_param
->ird
;
3332 ep
->ord
= conn_param
->ord
;
3334 if (peer2peer
&& ep
->ord
== 0)
3337 ep
->com
.cm_id
= cm_id
;
3338 ref_cm_id(&ep
->com
);
3339 cm_id
->provider_data
= ep
;
3341 ep
->com
.qp
= get_qhp(dev
, conn_param
->qpn
);
3343 pr_warn("%s qpn 0x%x not found!\n", __func__
, conn_param
->qpn
);
3348 pr_debug("qpn 0x%x qp %p cm_id %p\n", conn_param
->qpn
,
3352 * Allocate an active TID to initiate a TCP connection.
3354 ep
->atid
= cxgb4_alloc_atid(dev
->rdev
.lldi
.tids
, ep
);
3355 if (ep
->atid
== -1) {
3356 pr_err("%s - cannot alloc atid\n", __func__
);
3360 err
= xa_insert_irq(&dev
->atids
, ep
->atid
, ep
, GFP_KERNEL
);
3364 memcpy(&ep
->com
.local_addr
, &cm_id
->m_local_addr
,
3365 sizeof(ep
->com
.local_addr
));
3366 memcpy(&ep
->com
.remote_addr
, &cm_id
->m_remote_addr
,
3367 sizeof(ep
->com
.remote_addr
));
3369 laddr
= (struct sockaddr_in
*)&ep
->com
.local_addr
;
3370 raddr
= (struct sockaddr_in
*)&ep
->com
.remote_addr
;
3371 laddr6
= (struct sockaddr_in6
*)&ep
->com
.local_addr
;
3372 raddr6
= (struct sockaddr_in6
*) &ep
->com
.remote_addr
;
3374 if (cm_id
->m_remote_addr
.ss_family
== AF_INET
) {
3376 ra
= (__u8
*)&raddr
->sin_addr
;
3379 * Handle loopback requests to INADDR_ANY.
3381 if (raddr
->sin_addr
.s_addr
== htonl(INADDR_ANY
)) {
3382 err
= pick_local_ipaddrs(dev
, cm_id
);
3388 pr_debug("saddr %pI4 sport 0x%x raddr %pI4 rport 0x%x\n",
3389 &laddr
->sin_addr
, ntohs(laddr
->sin_port
),
3390 ra
, ntohs(raddr
->sin_port
));
3391 ep
->dst
= cxgb_find_route(&dev
->rdev
.lldi
, get_real_dev
,
3392 laddr
->sin_addr
.s_addr
,
3393 raddr
->sin_addr
.s_addr
,
3395 raddr
->sin_port
, cm_id
->tos
);
3398 ra
= (__u8
*)&raddr6
->sin6_addr
;
3401 * Handle loopback requests to INADDR_ANY.
3403 if (ipv6_addr_type(&raddr6
->sin6_addr
) == IPV6_ADDR_ANY
) {
3404 err
= pick_local_ip6addrs(dev
, cm_id
);
3410 pr_debug("saddr %pI6 sport 0x%x raddr %pI6 rport 0x%x\n",
3411 laddr6
->sin6_addr
.s6_addr
,
3412 ntohs(laddr6
->sin6_port
),
3413 raddr6
->sin6_addr
.s6_addr
, ntohs(raddr6
->sin6_port
));
3414 ep
->dst
= cxgb_find_route6(&dev
->rdev
.lldi
, get_real_dev
,
3415 laddr6
->sin6_addr
.s6_addr
,
3416 raddr6
->sin6_addr
.s6_addr
,
3418 raddr6
->sin6_port
, cm_id
->tos
,
3419 raddr6
->sin6_scope_id
);
3422 pr_err("%s - cannot find route\n", __func__
);
3423 err
= -EHOSTUNREACH
;
3427 err
= import_ep(ep
, iptype
, ra
, ep
->dst
, ep
->com
.dev
, true,
3428 ep
->com
.dev
->rdev
.lldi
.adapter_type
, cm_id
->tos
);
3430 pr_err("%s - cannot alloc l2e\n", __func__
);
3434 pr_debug("txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n",
3435 ep
->txq_idx
, ep
->tx_chan
, ep
->smac_idx
, ep
->rss_qid
,
3438 state_set(&ep
->com
, CONNECTING
);
3439 ep
->tos
= cm_id
->tos
;
3441 /* send connect request to rnic */
3442 err
= send_connect(ep
);
3446 cxgb4_l2t_release(ep
->l2t
);
3448 dst_release(ep
->dst
);
3450 xa_erase_irq(&ep
->com
.dev
->atids
, ep
->atid
);
3452 cxgb4_free_atid(ep
->com
.dev
->rdev
.lldi
.tids
, ep
->atid
);
3454 skb_queue_purge(&ep
->com
.ep_skb_list
);
3455 deref_cm_id(&ep
->com
);
3457 c4iw_put_ep(&ep
->com
);
3462 static int create_server6(struct c4iw_dev
*dev
, struct c4iw_listen_ep
*ep
)
3465 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*)
3466 &ep
->com
.local_addr
;
3468 if (ipv6_addr_type(&sin6
->sin6_addr
) != IPV6_ADDR_ANY
) {
3469 err
= cxgb4_clip_get(ep
->com
.dev
->rdev
.lldi
.ports
[0],
3470 (const u32
*)&sin6
->sin6_addr
.s6_addr
, 1);
3474 c4iw_init_wr_wait(ep
->com
.wr_waitp
);
3475 err
= cxgb4_create_server6(ep
->com
.dev
->rdev
.lldi
.ports
[0],
3476 ep
->stid
, &sin6
->sin6_addr
,
3478 ep
->com
.dev
->rdev
.lldi
.rxq_ids
[0]);
3480 err
= c4iw_wait_for_reply(&ep
->com
.dev
->rdev
,
3484 err
= net_xmit_errno(err
);
3486 cxgb4_clip_release(ep
->com
.dev
->rdev
.lldi
.ports
[0],
3487 (const u32
*)&sin6
->sin6_addr
.s6_addr
, 1);
3488 pr_err("cxgb4_create_server6/filter failed err %d stid %d laddr %pI6 lport %d\n",
3490 sin6
->sin6_addr
.s6_addr
, ntohs(sin6
->sin6_port
));
3495 static int create_server4(struct c4iw_dev
*dev
, struct c4iw_listen_ep
*ep
)
3498 struct sockaddr_in
*sin
= (struct sockaddr_in
*)
3499 &ep
->com
.local_addr
;
3501 if (dev
->rdev
.lldi
.enable_fw_ofld_conn
) {
3503 err
= cxgb4_create_server_filter(
3504 ep
->com
.dev
->rdev
.lldi
.ports
[0], ep
->stid
,
3505 sin
->sin_addr
.s_addr
, sin
->sin_port
, 0,
3506 ep
->com
.dev
->rdev
.lldi
.rxq_ids
[0], 0, 0);
3507 if (err
== -EBUSY
) {
3508 if (c4iw_fatal_error(&ep
->com
.dev
->rdev
)) {
3512 set_current_state(TASK_UNINTERRUPTIBLE
);
3513 schedule_timeout(usecs_to_jiffies(100));
3515 } while (err
== -EBUSY
);
3517 c4iw_init_wr_wait(ep
->com
.wr_waitp
);
3518 err
= cxgb4_create_server(ep
->com
.dev
->rdev
.lldi
.ports
[0],
3519 ep
->stid
, sin
->sin_addr
.s_addr
, sin
->sin_port
,
3520 0, ep
->com
.dev
->rdev
.lldi
.rxq_ids
[0]);
3522 err
= c4iw_wait_for_reply(&ep
->com
.dev
->rdev
,
3526 err
= net_xmit_errno(err
);
3529 pr_err("cxgb4_create_server/filter failed err %d stid %d laddr %pI4 lport %d\n"
3531 &sin
->sin_addr
, ntohs(sin
->sin_port
));
3535 int c4iw_create_listen(struct iw_cm_id
*cm_id
, int backlog
)
3538 struct c4iw_dev
*dev
= to_c4iw_dev(cm_id
->device
);
3539 struct c4iw_listen_ep
*ep
;
3543 ep
= alloc_ep(sizeof(*ep
), GFP_KERNEL
);
3545 pr_err("%s - cannot alloc ep\n", __func__
);
3549 skb_queue_head_init(&ep
->com
.ep_skb_list
);
3550 pr_debug("ep %p\n", ep
);
3551 ep
->com
.cm_id
= cm_id
;
3552 ref_cm_id(&ep
->com
);
3554 ep
->backlog
= backlog
;
3555 memcpy(&ep
->com
.local_addr
, &cm_id
->m_local_addr
,
3556 sizeof(ep
->com
.local_addr
));
3559 * Allocate a server TID.
3561 if (dev
->rdev
.lldi
.enable_fw_ofld_conn
&&
3562 ep
->com
.local_addr
.ss_family
== AF_INET
)
3563 ep
->stid
= cxgb4_alloc_sftid(dev
->rdev
.lldi
.tids
,
3564 cm_id
->m_local_addr
.ss_family
, ep
);
3566 ep
->stid
= cxgb4_alloc_stid(dev
->rdev
.lldi
.tids
,
3567 cm_id
->m_local_addr
.ss_family
, ep
);
3569 if (ep
->stid
== -1) {
3570 pr_err("%s - cannot alloc stid\n", __func__
);
3574 err
= xa_insert_irq(&dev
->stids
, ep
->stid
, ep
, GFP_KERNEL
);
3578 state_set(&ep
->com
, LISTEN
);
3579 if (ep
->com
.local_addr
.ss_family
== AF_INET
)
3580 err
= create_server4(dev
, ep
);
3582 err
= create_server6(dev
, ep
);
3584 cm_id
->provider_data
= ep
;
3587 xa_erase_irq(&ep
->com
.dev
->stids
, ep
->stid
);
3589 cxgb4_free_stid(ep
->com
.dev
->rdev
.lldi
.tids
, ep
->stid
,
3590 ep
->com
.local_addr
.ss_family
);
3592 deref_cm_id(&ep
->com
);
3593 c4iw_put_ep(&ep
->com
);
3599 int c4iw_destroy_listen(struct iw_cm_id
*cm_id
)
3602 struct c4iw_listen_ep
*ep
= to_listen_ep(cm_id
);
3604 pr_debug("ep %p\n", ep
);
3607 state_set(&ep
->com
, DEAD
);
3608 if (ep
->com
.dev
->rdev
.lldi
.enable_fw_ofld_conn
&&
3609 ep
->com
.local_addr
.ss_family
== AF_INET
) {
3610 err
= cxgb4_remove_server_filter(
3611 ep
->com
.dev
->rdev
.lldi
.ports
[0], ep
->stid
,
3612 ep
->com
.dev
->rdev
.lldi
.rxq_ids
[0], 0);
3614 struct sockaddr_in6
*sin6
;
3615 c4iw_init_wr_wait(ep
->com
.wr_waitp
);
3616 err
= cxgb4_remove_server(
3617 ep
->com
.dev
->rdev
.lldi
.ports
[0], ep
->stid
,
3618 ep
->com
.dev
->rdev
.lldi
.rxq_ids
[0], 0);
3621 err
= c4iw_wait_for_reply(&ep
->com
.dev
->rdev
, ep
->com
.wr_waitp
,
3623 sin6
= (struct sockaddr_in6
*)&ep
->com
.local_addr
;
3624 cxgb4_clip_release(ep
->com
.dev
->rdev
.lldi
.ports
[0],
3625 (const u32
*)&sin6
->sin6_addr
.s6_addr
, 1);
3627 xa_erase_irq(&ep
->com
.dev
->stids
, ep
->stid
);
3628 cxgb4_free_stid(ep
->com
.dev
->rdev
.lldi
.tids
, ep
->stid
,
3629 ep
->com
.local_addr
.ss_family
);
3631 deref_cm_id(&ep
->com
);
3632 c4iw_put_ep(&ep
->com
);
3636 int c4iw_ep_disconnect(struct c4iw_ep
*ep
, int abrupt
, gfp_t gfp
)
3641 struct c4iw_rdev
*rdev
;
3643 mutex_lock(&ep
->com
.mutex
);
3645 pr_debug("ep %p state %s, abrupt %d\n", ep
,
3646 states
[ep
->com
.state
], abrupt
);
3649 * Ref the ep here in case we have fatal errors causing the
3650 * ep to be released and freed.
3652 c4iw_get_ep(&ep
->com
);
3654 rdev
= &ep
->com
.dev
->rdev
;
3655 if (c4iw_fatal_error(rdev
)) {
3657 close_complete_upcall(ep
, -EIO
);
3658 ep
->com
.state
= DEAD
;
3660 switch (ep
->com
.state
) {
3669 ep
->com
.state
= ABORTING
;
3671 ep
->com
.state
= CLOSING
;
3674 * if we close before we see the fw4_ack() then we fix
3675 * up the timer state since we're reusing it.
3678 test_bit(STOP_MPA_TIMER
, &ep
->com
.flags
)) {
3679 clear_bit(STOP_MPA_TIMER
, &ep
->com
.flags
);
3684 set_bit(CLOSE_SENT
, &ep
->com
.flags
);
3687 if (!test_and_set_bit(CLOSE_SENT
, &ep
->com
.flags
)) {
3690 (void)stop_ep_timer(ep
);
3691 ep
->com
.state
= ABORTING
;
3693 ep
->com
.state
= MORIBUND
;
3699 pr_debug("ignoring disconnect ep %p state %u\n",
3703 WARN_ONCE(1, "Bad endpoint state %u\n", ep
->com
.state
);
3709 set_bit(EP_DISC_ABORT
, &ep
->com
.history
);
3710 ret
= send_abort(ep
);
3712 set_bit(EP_DISC_CLOSE
, &ep
->com
.history
);
3713 ret
= send_halfclose(ep
);
3716 set_bit(EP_DISC_FAIL
, &ep
->com
.history
);
3719 close_complete_upcall(ep
, -EIO
);
3722 struct c4iw_qp_attributes attrs
;
3724 attrs
.next_state
= C4IW_QP_STATE_ERROR
;
3725 ret
= c4iw_modify_qp(ep
->com
.qp
->rhp
,
3727 C4IW_QP_ATTR_NEXT_STATE
,
3730 pr_err("%s - qp <- error failed!\n",
3736 mutex_unlock(&ep
->com
.mutex
);
3737 c4iw_put_ep(&ep
->com
);
3739 release_ep_resources(ep
);
3743 static void active_ofld_conn_reply(struct c4iw_dev
*dev
, struct sk_buff
*skb
,
3744 struct cpl_fw6_msg_ofld_connection_wr_rpl
*req
)
3747 int atid
= be32_to_cpu(req
->tid
);
3749 ep
= (struct c4iw_ep
*)lookup_atid(dev
->rdev
.lldi
.tids
,
3750 (__force u32
) req
->tid
);
3754 switch (req
->retval
) {
3756 set_bit(ACT_RETRY_NOMEM
, &ep
->com
.history
);
3757 if (ep
->retry_count
++ < ACT_OPEN_RETRY_COUNT
) {
3758 send_fw_act_open_req(ep
, atid
);
3763 set_bit(ACT_RETRY_INUSE
, &ep
->com
.history
);
3764 if (ep
->retry_count
++ < ACT_OPEN_RETRY_COUNT
) {
3765 send_fw_act_open_req(ep
, atid
);
3770 pr_info("%s unexpected ofld conn wr retval %d\n",
3771 __func__
, req
->retval
);
3774 pr_err("active ofld_connect_wr failure %d atid %d\n",
3776 mutex_lock(&dev
->rdev
.stats
.lock
);
3777 dev
->rdev
.stats
.act_ofld_conn_fails
++;
3778 mutex_unlock(&dev
->rdev
.stats
.lock
);
3779 connect_reply_upcall(ep
, status2errno(req
->retval
));
3780 state_set(&ep
->com
, DEAD
);
3781 if (ep
->com
.remote_addr
.ss_family
== AF_INET6
) {
3782 struct sockaddr_in6
*sin6
=
3783 (struct sockaddr_in6
*)&ep
->com
.local_addr
;
3784 cxgb4_clip_release(ep
->com
.dev
->rdev
.lldi
.ports
[0],
3785 (const u32
*)&sin6
->sin6_addr
.s6_addr
, 1);
3787 xa_erase_irq(&dev
->atids
, atid
);
3788 cxgb4_free_atid(dev
->rdev
.lldi
.tids
, atid
);
3789 dst_release(ep
->dst
);
3790 cxgb4_l2t_release(ep
->l2t
);
3791 c4iw_put_ep(&ep
->com
);
3794 static void passive_ofld_conn_reply(struct c4iw_dev
*dev
, struct sk_buff
*skb
,
3795 struct cpl_fw6_msg_ofld_connection_wr_rpl
*req
)
3797 struct sk_buff
*rpl_skb
;
3798 struct cpl_pass_accept_req
*cpl
;
3801 rpl_skb
= (struct sk_buff
*)(unsigned long)req
->cookie
;
3803 pr_err("%s passive open failure %d\n", __func__
, req
->retval
);
3804 mutex_lock(&dev
->rdev
.stats
.lock
);
3805 dev
->rdev
.stats
.pas_ofld_conn_fails
++;
3806 mutex_unlock(&dev
->rdev
.stats
.lock
);
3809 cpl
= (struct cpl_pass_accept_req
*)cplhdr(rpl_skb
);
3810 OPCODE_TID(cpl
) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ
,
3811 (__force u32
) htonl(
3812 (__force u32
) req
->tid
)));
3813 ret
= pass_accept_req(dev
, rpl_skb
);
3820 static inline u64
t4_tcb_get_field64(__be64
*tcb
, u16 word
)
3822 u64 tlo
= be64_to_cpu(tcb
[((31 - word
) / 2)]);
3823 u64 thi
= be64_to_cpu(tcb
[((31 - word
) / 2) - 1]);
3827 t
= (thi
<< shift
) | (tlo
>> shift
);
3832 static inline u32
t4_tcb_get_field32(__be64
*tcb
, u16 word
, u32 mask
, u32 shift
)
3835 u64 t
= be64_to_cpu(tcb
[(31 - word
) / 2]);
3839 v
= (t
>> shift
) & mask
;
3843 static int read_tcb_rpl(struct c4iw_dev
*dev
, struct sk_buff
*skb
)
3845 struct cpl_get_tcb_rpl
*rpl
= cplhdr(skb
);
3846 __be64
*tcb
= (__be64
*)(rpl
+ 1);
3847 unsigned int tid
= GET_TID(rpl
);
3852 ep
= get_ep_from_tid(dev
, tid
);
3855 /* Examine the TF_RX_PDU_OUT (bit 49 of the t_flags) in order to
3856 * determine if there's a rx PDU feedback event pending.
3858 * If that bit is set, it means we'll need to re-read the TCB's
3859 * rq_start value. The final value is the one present in a TCB
3860 * with the TF_RX_PDU_OUT bit cleared.
3863 t_flags_64
= t4_tcb_get_field64(tcb
, TCB_T_FLAGS_W
);
3864 rx_pdu_out
= (t_flags_64
& TF_RX_PDU_OUT_V(1)) >> TF_RX_PDU_OUT_S
;
3866 c4iw_put_ep(&ep
->com
); /* from get_ep_from_tid() */
3867 c4iw_put_ep(&ep
->com
); /* from read_tcb() */
3869 /* If TF_RX_PDU_OUT bit is set, re-read the TCB */
3871 if (++ep
->rx_pdu_out_cnt
>= 2) {
3872 WARN_ONCE(1, "tcb re-read() reached the guard limit, finishing the cleanup\n");
3879 ep
->srqe_idx
= t4_tcb_get_field32(tcb
, TCB_RQ_START_W
, TCB_RQ_START_W
,
3882 pr_debug("ep %p tid %u %016x\n", ep
, ep
->hwtid
, ep
->srqe_idx
);
3884 if (test_bit(PEER_ABORT_IN_PROGRESS
, &ep
->com
.flags
))
3885 finish_peer_abort(dev
, ep
);
3886 else if (test_bit(ABORT_REQ_IN_PROGRESS
, &ep
->com
.flags
))
3889 WARN_ONCE(1, "unexpected state!");
3894 static int deferred_fw6_msg(struct c4iw_dev
*dev
, struct sk_buff
*skb
)
3896 struct cpl_fw6_msg
*rpl
= cplhdr(skb
);
3897 struct cpl_fw6_msg_ofld_connection_wr_rpl
*req
;
3899 switch (rpl
->type
) {
3901 c4iw_ev_dispatch(dev
, (struct t4_cqe
*)&rpl
->data
[0]);
3903 case FW6_TYPE_OFLD_CONNECTION_WR_RPL
:
3904 req
= (struct cpl_fw6_msg_ofld_connection_wr_rpl
*)rpl
->data
;
3905 switch (req
->t_state
) {
3907 active_ofld_conn_reply(dev
, skb
, req
);
3910 passive_ofld_conn_reply(dev
, skb
, req
);
3913 pr_err("%s unexpected ofld conn wr state %d\n",
3914 __func__
, req
->t_state
);
3922 static void build_cpl_pass_accept_req(struct sk_buff
*skb
, int stid
, u8 tos
)
3925 __be16 hdr_len
, vlantag
, len
;
3927 int tcp_hdr_len
, ip_hdr_len
;
3929 struct cpl_rx_pkt
*cpl
= cplhdr(skb
);
3930 struct cpl_pass_accept_req
*req
;
3931 struct tcp_options_received tmp_opt
;
3932 struct c4iw_dev
*dev
;
3933 enum chip_type type
;
3935 dev
= *((struct c4iw_dev
**) (skb
->cb
+ sizeof(void *)));
3936 /* Store values from cpl_rx_pkt in temporary location. */
3937 vlantag
= cpl
->vlan
;
3939 l2info
= cpl
->l2info
;
3940 hdr_len
= cpl
->hdr_len
;
3943 __skb_pull(skb
, sizeof(*req
) + sizeof(struct rss_header
));
3946 * We need to parse the TCP options from SYN packet.
3947 * to generate cpl_pass_accept_req.
3949 memset(&tmp_opt
, 0, sizeof(tmp_opt
));
3950 tcp_clear_options(&tmp_opt
);
3951 tcp_parse_options(&init_net
, skb
, &tmp_opt
, 0, NULL
);
3953 req
= __skb_push(skb
, sizeof(*req
));
3954 memset(req
, 0, sizeof(*req
));
3955 req
->l2info
= cpu_to_be16(SYN_INTF_V(intf
) |
3956 SYN_MAC_IDX_V(RX_MACIDX_G(
3957 be32_to_cpu(l2info
))) |
3959 type
= dev
->rdev
.lldi
.adapter_type
;
3960 tcp_hdr_len
= RX_TCPHDR_LEN_G(be16_to_cpu(hdr_len
));
3961 ip_hdr_len
= RX_IPHDR_LEN_G(be16_to_cpu(hdr_len
));
3963 cpu_to_be32(SYN_RX_CHAN_V(RX_CHAN_G(be32_to_cpu(l2info
))));
3964 if (CHELSIO_CHIP_VERSION(type
) <= CHELSIO_T5
) {
3965 eth_hdr_len
= is_t4(type
) ?
3966 RX_ETHHDR_LEN_G(be32_to_cpu(l2info
)) :
3967 RX_T5_ETHHDR_LEN_G(be32_to_cpu(l2info
));
3968 req
->hdr_len
|= cpu_to_be32(TCP_HDR_LEN_V(tcp_hdr_len
) |
3969 IP_HDR_LEN_V(ip_hdr_len
) |
3970 ETH_HDR_LEN_V(eth_hdr_len
));
3971 } else { /* T6 and later */
3972 eth_hdr_len
= RX_T6_ETHHDR_LEN_G(be32_to_cpu(l2info
));
3973 req
->hdr_len
|= cpu_to_be32(T6_TCP_HDR_LEN_V(tcp_hdr_len
) |
3974 T6_IP_HDR_LEN_V(ip_hdr_len
) |
3975 T6_ETH_HDR_LEN_V(eth_hdr_len
));
3977 req
->vlan
= vlantag
;
3979 req
->tos_stid
= cpu_to_be32(PASS_OPEN_TID_V(stid
) |
3980 PASS_OPEN_TOS_V(tos
));
3981 req
->tcpopt
.mss
= htons(tmp_opt
.mss_clamp
);
3982 if (tmp_opt
.wscale_ok
)
3983 req
->tcpopt
.wsf
= tmp_opt
.snd_wscale
;
3984 req
->tcpopt
.tstamp
= tmp_opt
.saw_tstamp
;
3985 if (tmp_opt
.sack_ok
)
3986 req
->tcpopt
.sack
= 1;
3987 OPCODE_TID(req
) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ
, 0));
3991 static void send_fw_pass_open_req(struct c4iw_dev
*dev
, struct sk_buff
*skb
,
3992 __be32 laddr
, __be16 lport
,
3993 __be32 raddr
, __be16 rport
,
3994 u32 rcv_isn
, u32 filter
, u16 window
,
3995 u32 rss_qid
, u8 port_id
)
3997 struct sk_buff
*req_skb
;
3998 struct fw_ofld_connection_wr
*req
;
3999 struct cpl_pass_accept_req
*cpl
= cplhdr(skb
);
4002 req_skb
= alloc_skb(sizeof(struct fw_ofld_connection_wr
), GFP_KERNEL
);
4005 req
= __skb_put_zero(req_skb
, sizeof(*req
));
4006 req
->op_compl
= htonl(WR_OP_V(FW_OFLD_CONNECTION_WR
) | FW_WR_COMPL_F
);
4007 req
->len16_pkd
= htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*req
), 16)));
4008 req
->le
.version_cpl
= htonl(FW_OFLD_CONNECTION_WR_CPL_F
);
4009 req
->le
.filter
= (__force __be32
) filter
;
4010 req
->le
.lport
= lport
;
4011 req
->le
.pport
= rport
;
4012 req
->le
.u
.ipv4
.lip
= laddr
;
4013 req
->le
.u
.ipv4
.pip
= raddr
;
4014 req
->tcb
.rcv_nxt
= htonl(rcv_isn
+ 1);
4015 req
->tcb
.rcv_adv
= htons(window
);
4016 req
->tcb
.t_state_to_astid
=
4017 htonl(FW_OFLD_CONNECTION_WR_T_STATE_V(TCP_SYN_RECV
) |
4018 FW_OFLD_CONNECTION_WR_RCV_SCALE_V(cpl
->tcpopt
.wsf
) |
4019 FW_OFLD_CONNECTION_WR_ASTID_V(
4020 PASS_OPEN_TID_G(ntohl(cpl
->tos_stid
))));
4023 * We store the qid in opt2 which will be used by the firmware
4024 * to send us the wr response.
4026 req
->tcb
.opt2
= htonl(RSS_QUEUE_V(rss_qid
));
4029 * We initialize the MSS index in TCB to 0xF.
4030 * So that when driver sends cpl_pass_accept_rpl
4031 * TCB picks up the correct value. If this was 0
4032 * TP will ignore any value > 0 for MSS index.
4034 req
->tcb
.opt0
= cpu_to_be64(MSS_IDX_V(0xF));
4035 req
->cookie
= (uintptr_t)skb
;
4037 set_wr_txq(req_skb
, CPL_PRIORITY_CONTROL
, port_id
);
4038 ret
= cxgb4_ofld_send(dev
->rdev
.lldi
.ports
[0], req_skb
);
4040 pr_err("%s - cxgb4_ofld_send error %d - dropping\n", __func__
,
4048 * Handler for CPL_RX_PKT message. Need to handle cpl_rx_pkt
4049 * messages when a filter is being used instead of server to
4050 * redirect a syn packet. When packets hit filter they are redirected
4051 * to the offload queue and driver tries to establish the connection
4052 * using firmware work request.
4054 static int rx_pkt(struct c4iw_dev
*dev
, struct sk_buff
*skb
)
4057 unsigned int filter
;
4058 struct ethhdr
*eh
= NULL
;
4059 struct vlan_ethhdr
*vlan_eh
= NULL
;
4061 struct tcphdr
*tcph
;
4062 struct rss_header
*rss
= (void *)skb
->data
;
4063 struct cpl_rx_pkt
*cpl
= (void *)skb
->data
;
4064 struct cpl_pass_accept_req
*req
= (void *)(rss
+ 1);
4065 struct l2t_entry
*e
;
4066 struct dst_entry
*dst
;
4067 struct c4iw_ep
*lep
= NULL
;
4069 struct port_info
*pi
;
4070 struct net_device
*pdev
;
4071 u16 rss_qid
, eth_hdr_len
;
4073 struct neighbour
*neigh
;
4075 /* Drop all non-SYN packets */
4076 if (!(cpl
->l2info
& cpu_to_be32(RXF_SYN_F
)))
4080 * Drop all packets which did not hit the filter.
4081 * Unlikely to happen.
4083 if (!(rss
->filter_hit
&& rss
->filter_tid
))
4087 * Calculate the server tid from filter hit index from cpl_rx_pkt.
4089 stid
= (__force
int) cpu_to_be32((__force u32
) rss
->hash_val
);
4091 lep
= (struct c4iw_ep
*)get_ep_from_stid(dev
, stid
);
4093 pr_warn("%s connect request on invalid stid %d\n",
4098 switch (CHELSIO_CHIP_VERSION(dev
->rdev
.lldi
.adapter_type
)) {
4100 eth_hdr_len
= RX_ETHHDR_LEN_G(be32_to_cpu(cpl
->l2info
));
4103 eth_hdr_len
= RX_T5_ETHHDR_LEN_G(be32_to_cpu(cpl
->l2info
));
4106 eth_hdr_len
= RX_T6_ETHHDR_LEN_G(be32_to_cpu(cpl
->l2info
));
4109 pr_err("T%d Chip is not supported\n",
4110 CHELSIO_CHIP_VERSION(dev
->rdev
.lldi
.adapter_type
));
4114 if (eth_hdr_len
== ETH_HLEN
) {
4115 eh
= (struct ethhdr
*)(req
+ 1);
4116 iph
= (struct iphdr
*)(eh
+ 1);
4118 vlan_eh
= (struct vlan_ethhdr
*)(req
+ 1);
4119 iph
= (struct iphdr
*)(vlan_eh
+ 1);
4120 __vlan_hwaccel_put_tag(skb
, htons(ETH_P_8021Q
), ntohs(cpl
->vlan
));
4123 if (iph
->version
!= 0x4)
4126 tcph
= (struct tcphdr
*)(iph
+ 1);
4127 skb_set_network_header(skb
, (void *)iph
- (void *)rss
);
4128 skb_set_transport_header(skb
, (void *)tcph
- (void *)rss
);
4131 pr_debug("lip 0x%x lport %u pip 0x%x pport %u tos %d\n",
4132 ntohl(iph
->daddr
), ntohs(tcph
->dest
), ntohl(iph
->saddr
),
4133 ntohs(tcph
->source
), iph
->tos
);
4135 dst
= cxgb_find_route(&dev
->rdev
.lldi
, get_real_dev
,
4136 iph
->daddr
, iph
->saddr
, tcph
->dest
,
4137 tcph
->source
, iph
->tos
);
4139 pr_err("%s - failed to find dst entry!\n", __func__
);
4142 neigh
= dst_neigh_lookup_skb(dst
, skb
);
4145 pr_err("%s - failed to allocate neigh!\n", __func__
);
4149 if (neigh
->dev
->flags
& IFF_LOOPBACK
) {
4150 pdev
= ip_dev_find(&init_net
, iph
->daddr
);
4151 e
= cxgb4_l2t_get(dev
->rdev
.lldi
.l2t
, neigh
,
4153 pi
= (struct port_info
*)netdev_priv(pdev
);
4156 pdev
= get_real_dev(neigh
->dev
);
4157 e
= cxgb4_l2t_get(dev
->rdev
.lldi
.l2t
, neigh
,
4159 pi
= (struct port_info
*)netdev_priv(pdev
);
4161 neigh_release(neigh
);
4163 pr_err("%s - failed to allocate l2t entry!\n",
4168 step
= dev
->rdev
.lldi
.nrxq
/ dev
->rdev
.lldi
.nchan
;
4169 rss_qid
= dev
->rdev
.lldi
.rxq_ids
[pi
->port_id
* step
];
4170 window
= (__force u16
) htons((__force u16
)tcph
->window
);
4172 /* Calcuate filter portion for LE region. */
4173 filter
= (__force
unsigned int) cpu_to_be32(cxgb4_select_ntuple(
4174 dev
->rdev
.lldi
.ports
[0],
4178 * Synthesize the cpl_pass_accept_req. We have everything except the
4179 * TID. Once firmware sends a reply with TID we update the TID field
4180 * in cpl and pass it through the regular cpl_pass_accept_req path.
4182 build_cpl_pass_accept_req(skb
, stid
, iph
->tos
);
4183 send_fw_pass_open_req(dev
, skb
, iph
->daddr
, tcph
->dest
, iph
->saddr
,
4184 tcph
->source
, ntohl(tcph
->seq
), filter
, window
,
4185 rss_qid
, pi
->port_id
);
4186 cxgb4_l2t_release(e
);
4191 c4iw_put_ep(&lep
->com
);
4196 * These are the real handlers that are called from a
4199 static c4iw_handler_func work_handlers
[NUM_CPL_CMDS
+ NUM_FAKE_CPLS
] = {
4200 [CPL_ACT_ESTABLISH
] = act_establish
,
4201 [CPL_ACT_OPEN_RPL
] = act_open_rpl
,
4202 [CPL_RX_DATA
] = rx_data
,
4203 [CPL_ABORT_RPL_RSS
] = abort_rpl
,
4204 [CPL_ABORT_RPL
] = abort_rpl
,
4205 [CPL_PASS_OPEN_RPL
] = pass_open_rpl
,
4206 [CPL_CLOSE_LISTSRV_RPL
] = close_listsrv_rpl
,
4207 [CPL_PASS_ACCEPT_REQ
] = pass_accept_req
,
4208 [CPL_PASS_ESTABLISH
] = pass_establish
,
4209 [CPL_PEER_CLOSE
] = peer_close
,
4210 [CPL_ABORT_REQ_RSS
] = peer_abort
,
4211 [CPL_CLOSE_CON_RPL
] = close_con_rpl
,
4212 [CPL_RDMA_TERMINATE
] = terminate
,
4213 [CPL_FW4_ACK
] = fw4_ack
,
4214 [CPL_GET_TCB_RPL
] = read_tcb_rpl
,
4215 [CPL_FW6_MSG
] = deferred_fw6_msg
,
4216 [CPL_RX_PKT
] = rx_pkt
,
4217 [FAKE_CPL_PUT_EP_SAFE
] = _put_ep_safe
,
4218 [FAKE_CPL_PASS_PUT_EP_SAFE
] = _put_pass_ep_safe
4221 static void process_timeout(struct c4iw_ep
*ep
)
4223 struct c4iw_qp_attributes attrs
;
4226 mutex_lock(&ep
->com
.mutex
);
4227 pr_debug("ep %p tid %u state %d\n", ep
, ep
->hwtid
, ep
->com
.state
);
4228 set_bit(TIMEDOUT
, &ep
->com
.history
);
4229 switch (ep
->com
.state
) {
4231 connect_reply_upcall(ep
, -ETIMEDOUT
);
4240 if (ep
->com
.cm_id
&& ep
->com
.qp
) {
4241 attrs
.next_state
= C4IW_QP_STATE_ERROR
;
4242 c4iw_modify_qp(ep
->com
.qp
->rhp
,
4243 ep
->com
.qp
, C4IW_QP_ATTR_NEXT_STATE
,
4246 close_complete_upcall(ep
, -ETIMEDOUT
);
4252 * These states are expected if the ep timed out at the same
4253 * time as another thread was calling stop_ep_timer().
4254 * So we silently do nothing for these states.
4259 WARN(1, "%s unexpected state ep %p tid %u state %u\n",
4260 __func__
, ep
, ep
->hwtid
, ep
->com
.state
);
4263 mutex_unlock(&ep
->com
.mutex
);
4265 c4iw_ep_disconnect(ep
, 1, GFP_KERNEL
);
4266 c4iw_put_ep(&ep
->com
);
4269 static void process_timedout_eps(void)
4273 spin_lock_irq(&timeout_lock
);
4274 while (!list_empty(&timeout_list
)) {
4275 struct list_head
*tmp
;
4277 tmp
= timeout_list
.next
;
4281 spin_unlock_irq(&timeout_lock
);
4282 ep
= list_entry(tmp
, struct c4iw_ep
, entry
);
4283 process_timeout(ep
);
4284 spin_lock_irq(&timeout_lock
);
4286 spin_unlock_irq(&timeout_lock
);
4289 static void process_work(struct work_struct
*work
)
4291 struct sk_buff
*skb
= NULL
;
4292 struct c4iw_dev
*dev
;
4293 struct cpl_act_establish
*rpl
;
4294 unsigned int opcode
;
4297 process_timedout_eps();
4298 while ((skb
= skb_dequeue(&rxq
))) {
4300 dev
= *((struct c4iw_dev
**) (skb
->cb
+ sizeof(void *)));
4301 opcode
= rpl
->ot
.opcode
;
4303 if (opcode
>= ARRAY_SIZE(work_handlers
) ||
4304 !work_handlers
[opcode
]) {
4305 pr_err("No handler for opcode 0x%x.\n", opcode
);
4308 ret
= work_handlers
[opcode
](dev
, skb
);
4312 process_timedout_eps();
4316 static DECLARE_WORK(skb_work
, process_work
);
4318 static void ep_timeout(struct timer_list
*t
)
4320 struct c4iw_ep
*ep
= from_timer(ep
, t
, timer
);
4323 spin_lock(&timeout_lock
);
4324 if (!test_and_set_bit(TIMEOUT
, &ep
->com
.flags
)) {
4326 * Only insert if it is not already on the list.
4328 if (!ep
->entry
.next
) {
4329 list_add_tail(&ep
->entry
, &timeout_list
);
4333 spin_unlock(&timeout_lock
);
4335 queue_work(workq
, &skb_work
);
4339 * All the CM events are handled on a work queue to have a safe context.
4341 static int sched(struct c4iw_dev
*dev
, struct sk_buff
*skb
)
4345 * Save dev in the skb->cb area.
4347 *((struct c4iw_dev
**) (skb
->cb
+ sizeof(void *))) = dev
;
4350 * Queue the skb and schedule the worker thread.
4352 skb_queue_tail(&rxq
, skb
);
4353 queue_work(workq
, &skb_work
);
4357 static int set_tcb_rpl(struct c4iw_dev
*dev
, struct sk_buff
*skb
)
4359 struct cpl_set_tcb_rpl
*rpl
= cplhdr(skb
);
4361 if (rpl
->status
!= CPL_ERR_NONE
) {
4362 pr_err("Unexpected SET_TCB_RPL status %u for tid %u\n",
4363 rpl
->status
, GET_TID(rpl
));
4369 static int fw6_msg(struct c4iw_dev
*dev
, struct sk_buff
*skb
)
4371 struct cpl_fw6_msg
*rpl
= cplhdr(skb
);
4372 struct c4iw_wr_wait
*wr_waitp
;
4375 pr_debug("type %u\n", rpl
->type
);
4377 switch (rpl
->type
) {
4378 case FW6_TYPE_WR_RPL
:
4379 ret
= (int)((be64_to_cpu(rpl
->data
[0]) >> 8) & 0xff);
4380 wr_waitp
= (struct c4iw_wr_wait
*)(__force
unsigned long) rpl
->data
[1];
4381 pr_debug("wr_waitp %p ret %u\n", wr_waitp
, ret
);
4383 c4iw_wake_up_deref(wr_waitp
, ret
? -ret
: 0);
4387 case FW6_TYPE_OFLD_CONNECTION_WR_RPL
:
4391 pr_err("%s unexpected fw6 msg type %u\n",
4392 __func__
, rpl
->type
);
4399 static int peer_abort_intr(struct c4iw_dev
*dev
, struct sk_buff
*skb
)
4401 struct cpl_abort_req_rss
*req
= cplhdr(skb
);
4403 unsigned int tid
= GET_TID(req
);
4405 ep
= get_ep_from_tid(dev
, tid
);
4406 /* This EP will be dereferenced in peer_abort() */
4408 pr_warn("Abort on non-existent endpoint, tid %d\n", tid
);
4412 if (cxgb_is_neg_adv(req
->status
)) {
4413 pr_debug("Negative advice on abort- tid %u status %d (%s)\n",
4414 ep
->hwtid
, req
->status
,
4415 neg_adv_str(req
->status
));
4418 pr_debug("ep %p tid %u state %u\n", ep
, ep
->hwtid
, ep
->com
.state
);
4420 c4iw_wake_up_noref(ep
->com
.wr_waitp
, -ECONNRESET
);
4427 * Most upcalls from the T4 Core go to sched() to
4428 * schedule the processing on a work queue.
4430 c4iw_handler_func c4iw_handlers
[NUM_CPL_CMDS
] = {
4431 [CPL_ACT_ESTABLISH
] = sched
,
4432 [CPL_ACT_OPEN_RPL
] = sched
,
4433 [CPL_RX_DATA
] = sched
,
4434 [CPL_ABORT_RPL_RSS
] = sched
,
4435 [CPL_ABORT_RPL
] = sched
,
4436 [CPL_PASS_OPEN_RPL
] = sched
,
4437 [CPL_CLOSE_LISTSRV_RPL
] = sched
,
4438 [CPL_PASS_ACCEPT_REQ
] = sched
,
4439 [CPL_PASS_ESTABLISH
] = sched
,
4440 [CPL_PEER_CLOSE
] = sched
,
4441 [CPL_CLOSE_CON_RPL
] = sched
,
4442 [CPL_ABORT_REQ_RSS
] = peer_abort_intr
,
4443 [CPL_RDMA_TERMINATE
] = sched
,
4444 [CPL_FW4_ACK
] = sched
,
4445 [CPL_SET_TCB_RPL
] = set_tcb_rpl
,
4446 [CPL_GET_TCB_RPL
] = sched
,
4447 [CPL_FW6_MSG
] = fw6_msg
,
4448 [CPL_RX_PKT
] = sched
4451 int __init
c4iw_cm_init(void)
4453 spin_lock_init(&timeout_lock
);
4454 skb_queue_head_init(&rxq
);
4456 workq
= alloc_ordered_workqueue("iw_cxgb4", WQ_MEM_RECLAIM
);
4463 void c4iw_cm_term(void)
4465 WARN_ON(!list_empty(&timeout_list
));
4466 flush_workqueue(workq
);
4467 destroy_workqueue(workq
);