Commit | Line | Data |
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cfdda9d7 | 1 | /* |
9eccfe10 | 2 | * Copyright (c) 2009-2014 Chelsio, Inc. All rights reserved. |
cfdda9d7 SW |
3 | * |
4 | * This software is available to you under a choice of one of two | |
5 | * licenses. You may choose to be licensed under the terms of the GNU | |
6 | * General Public License (GPL) Version 2, available from the file | |
7 | * COPYING in the main directory of this source tree, or the | |
8 | * OpenIB.org BSD license below: | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or | |
11 | * without modification, are permitted provided that the following | |
12 | * conditions are met: | |
13 | * | |
14 | * - Redistributions of source code must retain the above | |
15 | * copyright notice, this list of conditions and the following | |
16 | * disclaimer. | |
17 | * | |
18 | * - Redistributions in binary form must reproduce the above | |
19 | * copyright notice, this list of conditions and the following | |
20 | * disclaimer in the documentation and/or other materials | |
21 | * provided with the distribution. | |
22 | * | |
23 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
24 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
25 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
26 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
27 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
28 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
29 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
30 | * SOFTWARE. | |
31 | */ | |
32 | #include <linux/module.h> | |
33 | #include <linux/list.h> | |
34 | #include <linux/workqueue.h> | |
35 | #include <linux/skbuff.h> | |
36 | #include <linux/timer.h> | |
37 | #include <linux/notifier.h> | |
38 | #include <linux/inetdevice.h> | |
39 | #include <linux/ip.h> | |
40 | #include <linux/tcp.h> | |
1cab775c | 41 | #include <linux/if_vlan.h> |
cfdda9d7 SW |
42 | |
43 | #include <net/neighbour.h> | |
44 | #include <net/netevent.h> | |
45 | #include <net/route.h> | |
1cab775c | 46 | #include <net/tcp.h> |
830662f6 VP |
47 | #include <net/ip6_route.h> |
48 | #include <net/addrconf.h> | |
cfdda9d7 | 49 | |
11b8e22d SW |
50 | #include <rdma/ib_addr.h> |
51 | ||
cfdda9d7 SW |
52 | #include "iw_cxgb4.h" |
53 | ||
54 | static char *states[] = { | |
55 | "idle", | |
56 | "listen", | |
57 | "connecting", | |
58 | "mpa_wait_req", | |
59 | "mpa_req_sent", | |
60 | "mpa_req_rcvd", | |
61 | "mpa_rep_sent", | |
62 | "fpdu_mode", | |
63 | "aborting", | |
64 | "closing", | |
65 | "moribund", | |
66 | "dead", | |
67 | NULL, | |
68 | }; | |
69 | ||
5be78ee9 VP |
70 | static int nocong; |
71 | module_param(nocong, int, 0644); | |
72 | MODULE_PARM_DESC(nocong, "Turn of congestion control (default=0)"); | |
73 | ||
74 | static int enable_ecn; | |
75 | module_param(enable_ecn, int, 0644); | |
76 | MODULE_PARM_DESC(enable_ecn, "Enable ECN (default=0/disabled)"); | |
77 | ||
b52fe09e | 78 | static int dack_mode = 1; |
ba6d3925 | 79 | module_param(dack_mode, int, 0644); |
b52fe09e | 80 | MODULE_PARM_DESC(dack_mode, "Delayed ack mode (default=1)"); |
ba6d3925 | 81 | |
4c2c5763 | 82 | uint c4iw_max_read_depth = 32; |
be4c9bad | 83 | module_param(c4iw_max_read_depth, int, 0644); |
4c2c5763 HS |
84 | MODULE_PARM_DESC(c4iw_max_read_depth, |
85 | "Per-connection max ORD/IRD (default=32)"); | |
be4c9bad | 86 | |
cfdda9d7 SW |
87 | static int enable_tcp_timestamps; |
88 | module_param(enable_tcp_timestamps, int, 0644); | |
89 | MODULE_PARM_DESC(enable_tcp_timestamps, "Enable tcp timestamps (default=0)"); | |
90 | ||
91 | static int enable_tcp_sack; | |
92 | module_param(enable_tcp_sack, int, 0644); | |
93 | MODULE_PARM_DESC(enable_tcp_sack, "Enable tcp SACK (default=0)"); | |
94 | ||
95 | static int enable_tcp_window_scaling = 1; | |
96 | module_param(enable_tcp_window_scaling, int, 0644); | |
97 | MODULE_PARM_DESC(enable_tcp_window_scaling, | |
98 | "Enable tcp window scaling (default=1)"); | |
99 | ||
100 | int c4iw_debug; | |
101 | module_param(c4iw_debug, int, 0644); | |
102 | MODULE_PARM_DESC(c4iw_debug, "Enable debug logging (default=0)"); | |
103 | ||
df2d5130 | 104 | static int peer2peer = 1; |
cfdda9d7 | 105 | module_param(peer2peer, int, 0644); |
df2d5130 | 106 | MODULE_PARM_DESC(peer2peer, "Support peer2peer ULPs (default=1)"); |
cfdda9d7 SW |
107 | |
108 | static int p2p_type = FW_RI_INIT_P2PTYPE_READ_REQ; | |
109 | module_param(p2p_type, int, 0644); | |
110 | MODULE_PARM_DESC(p2p_type, "RDMAP opcode to use for the RTR message: " | |
111 | "1=RDMA_READ 0=RDMA_WRITE (default 1)"); | |
112 | ||
113 | static int ep_timeout_secs = 60; | |
114 | module_param(ep_timeout_secs, int, 0644); | |
115 | MODULE_PARM_DESC(ep_timeout_secs, "CM Endpoint operation timeout " | |
116 | "in seconds (default=60)"); | |
117 | ||
118 | static int mpa_rev = 1; | |
119 | module_param(mpa_rev, int, 0644); | |
120 | MODULE_PARM_DESC(mpa_rev, "MPA Revision, 0 supports amso1100, " | |
d2fe99e8 KS |
121 | "1 is RFC0544 spec compliant, 2 is IETF MPA Peer Connect Draft" |
122 | " compliant (default=1)"); | |
cfdda9d7 SW |
123 | |
124 | static int markers_enabled; | |
125 | module_param(markers_enabled, int, 0644); | |
126 | MODULE_PARM_DESC(markers_enabled, "Enable MPA MARKERS (default(0)=disabled)"); | |
127 | ||
128 | static int crc_enabled = 1; | |
129 | module_param(crc_enabled, int, 0644); | |
130 | MODULE_PARM_DESC(crc_enabled, "Enable MPA CRC (default(1)=enabled)"); | |
131 | ||
132 | static int rcv_win = 256 * 1024; | |
133 | module_param(rcv_win, int, 0644); | |
134 | MODULE_PARM_DESC(rcv_win, "TCP receive window in bytes (default=256KB)"); | |
135 | ||
98ae68b7 | 136 | static int snd_win = 128 * 1024; |
cfdda9d7 | 137 | module_param(snd_win, int, 0644); |
98ae68b7 | 138 | MODULE_PARM_DESC(snd_win, "TCP send window in bytes (default=128KB)"); |
cfdda9d7 | 139 | |
cfdda9d7 | 140 | static struct workqueue_struct *workq; |
cfdda9d7 SW |
141 | |
142 | static struct sk_buff_head rxq; | |
cfdda9d7 SW |
143 | |
144 | static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp); | |
145 | static void ep_timeout(unsigned long arg); | |
146 | static void connect_reply_upcall(struct c4iw_ep *ep, int status); | |
147 | ||
be4c9bad RD |
148 | static LIST_HEAD(timeout_list); |
149 | static spinlock_t timeout_lock; | |
150 | ||
325abead VP |
151 | static void deref_qp(struct c4iw_ep *ep) |
152 | { | |
153 | c4iw_qp_rem_ref(&ep->com.qp->ibqp); | |
154 | clear_bit(QP_REFERENCED, &ep->com.flags); | |
155 | } | |
156 | ||
157 | static void ref_qp(struct c4iw_ep *ep) | |
158 | { | |
159 | set_bit(QP_REFERENCED, &ep->com.flags); | |
160 | c4iw_qp_add_ref(&ep->com.qp->ibqp); | |
161 | } | |
162 | ||
cfdda9d7 SW |
163 | static void start_ep_timer(struct c4iw_ep *ep) |
164 | { | |
165 | PDBG("%s ep %p\n", __func__, ep); | |
166 | if (timer_pending(&ep->timer)) { | |
1ec779cc VP |
167 | pr_err("%s timer already started! ep %p\n", |
168 | __func__, ep); | |
169 | return; | |
170 | } | |
171 | clear_bit(TIMEOUT, &ep->com.flags); | |
172 | c4iw_get_ep(&ep->com); | |
cfdda9d7 SW |
173 | ep->timer.expires = jiffies + ep_timeout_secs * HZ; |
174 | ep->timer.data = (unsigned long)ep; | |
175 | ep->timer.function = ep_timeout; | |
176 | add_timer(&ep->timer); | |
177 | } | |
178 | ||
b33bd0cb | 179 | static int stop_ep_timer(struct c4iw_ep *ep) |
cfdda9d7 | 180 | { |
1ec779cc | 181 | PDBG("%s ep %p stopping\n", __func__, ep); |
cfdda9d7 | 182 | del_timer_sync(&ep->timer); |
b33bd0cb | 183 | if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { |
1ec779cc | 184 | c4iw_put_ep(&ep->com); |
b33bd0cb SW |
185 | return 0; |
186 | } | |
187 | return 1; | |
cfdda9d7 SW |
188 | } |
189 | ||
190 | static int c4iw_l2t_send(struct c4iw_rdev *rdev, struct sk_buff *skb, | |
191 | struct l2t_entry *l2e) | |
192 | { | |
193 | int error = 0; | |
194 | ||
195 | if (c4iw_fatal_error(rdev)) { | |
196 | kfree_skb(skb); | |
197 | PDBG("%s - device in error state - dropping\n", __func__); | |
198 | return -EIO; | |
199 | } | |
200 | error = cxgb4_l2t_send(rdev->lldi.ports[0], skb, l2e); | |
201 | if (error < 0) | |
202 | kfree_skb(skb); | |
74594861 | 203 | return error < 0 ? error : 0; |
cfdda9d7 SW |
204 | } |
205 | ||
206 | int c4iw_ofld_send(struct c4iw_rdev *rdev, struct sk_buff *skb) | |
207 | { | |
208 | int error = 0; | |
209 | ||
210 | if (c4iw_fatal_error(rdev)) { | |
211 | kfree_skb(skb); | |
212 | PDBG("%s - device in error state - dropping\n", __func__); | |
213 | return -EIO; | |
214 | } | |
215 | error = cxgb4_ofld_send(rdev->lldi.ports[0], skb); | |
216 | if (error < 0) | |
217 | kfree_skb(skb); | |
74594861 | 218 | return error < 0 ? error : 0; |
cfdda9d7 SW |
219 | } |
220 | ||
221 | static void release_tid(struct c4iw_rdev *rdev, u32 hwtid, struct sk_buff *skb) | |
222 | { | |
223 | struct cpl_tid_release *req; | |
224 | ||
225 | skb = get_skb(skb, sizeof *req, GFP_KERNEL); | |
226 | if (!skb) | |
227 | return; | |
228 | req = (struct cpl_tid_release *) skb_put(skb, sizeof(*req)); | |
229 | INIT_TP_WR(req, hwtid); | |
230 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_TID_RELEASE, hwtid)); | |
231 | set_wr_txq(skb, CPL_PRIORITY_SETUP, 0); | |
232 | c4iw_ofld_send(rdev, skb); | |
233 | return; | |
234 | } | |
235 | ||
236 | static void set_emss(struct c4iw_ep *ep, u16 opt) | |
237 | { | |
6c53e938 | 238 | ep->emss = ep->com.dev->rdev.lldi.mtus[TCPOPT_MSS_G(opt)] - |
04524a47 H |
239 | ((AF_INET == ep->com.remote_addr.ss_family) ? |
240 | sizeof(struct iphdr) : sizeof(struct ipv6hdr)) - | |
241 | sizeof(struct tcphdr); | |
cfdda9d7 | 242 | ep->mss = ep->emss; |
6c53e938 | 243 | if (TCPOPT_TSTAMP_G(opt)) |
04524a47 | 244 | ep->emss -= round_up(TCPOLEN_TIMESTAMP, 4); |
cfdda9d7 SW |
245 | if (ep->emss < 128) |
246 | ep->emss = 128; | |
92e7ae71 HS |
247 | if (ep->emss & 7) |
248 | PDBG("Warning: misaligned mtu idx %u mss %u emss=%u\n", | |
6c53e938 HS |
249 | TCPOPT_MSS_G(opt), ep->mss, ep->emss); |
250 | PDBG("%s mss_idx %u mss %u emss=%u\n", __func__, TCPOPT_MSS_G(opt), | |
cfdda9d7 SW |
251 | ep->mss, ep->emss); |
252 | } | |
253 | ||
254 | static enum c4iw_ep_state state_read(struct c4iw_ep_common *epc) | |
255 | { | |
cfdda9d7 SW |
256 | enum c4iw_ep_state state; |
257 | ||
2f5b48c3 | 258 | mutex_lock(&epc->mutex); |
cfdda9d7 | 259 | state = epc->state; |
2f5b48c3 | 260 | mutex_unlock(&epc->mutex); |
cfdda9d7 SW |
261 | return state; |
262 | } | |
263 | ||
264 | static void __state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new) | |
265 | { | |
266 | epc->state = new; | |
267 | } | |
268 | ||
269 | static void state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new) | |
270 | { | |
2f5b48c3 | 271 | mutex_lock(&epc->mutex); |
cfdda9d7 SW |
272 | PDBG("%s - %s -> %s\n", __func__, states[epc->state], states[new]); |
273 | __state_set(epc, new); | |
2f5b48c3 | 274 | mutex_unlock(&epc->mutex); |
cfdda9d7 SW |
275 | return; |
276 | } | |
277 | ||
278 | static void *alloc_ep(int size, gfp_t gfp) | |
279 | { | |
280 | struct c4iw_ep_common *epc; | |
281 | ||
282 | epc = kzalloc(size, gfp); | |
283 | if (epc) { | |
284 | kref_init(&epc->kref); | |
2f5b48c3 | 285 | mutex_init(&epc->mutex); |
aadc4df3 | 286 | c4iw_init_wr_wait(&epc->wr_wait); |
cfdda9d7 SW |
287 | } |
288 | PDBG("%s alloc ep %p\n", __func__, epc); | |
289 | return epc; | |
290 | } | |
291 | ||
292 | void _c4iw_free_ep(struct kref *kref) | |
293 | { | |
294 | struct c4iw_ep *ep; | |
295 | ||
296 | ep = container_of(kref, struct c4iw_ep, com.kref); | |
297 | PDBG("%s ep %p state %s\n", __func__, ep, states[state_read(&ep->com)]); | |
325abead VP |
298 | if (test_bit(QP_REFERENCED, &ep->com.flags)) |
299 | deref_qp(ep); | |
cfdda9d7 | 300 | if (test_bit(RELEASE_RESOURCES, &ep->com.flags)) { |
fe7e0a4d | 301 | remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid); |
cfdda9d7 SW |
302 | cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid); |
303 | dst_release(ep->dst); | |
304 | cxgb4_l2t_release(ep->l2t); | |
305 | } | |
9eccfe10 SW |
306 | if (test_bit(RELEASE_MAPINFO, &ep->com.flags)) { |
307 | print_addr(&ep->com, __func__, "remove_mapinfo/mapping"); | |
308 | iwpm_remove_mapinfo(&ep->com.local_addr, | |
309 | &ep->com.mapped_local_addr); | |
310 | iwpm_remove_mapping(&ep->com.local_addr, RDMA_NL_C4IW); | |
311 | } | |
cfdda9d7 SW |
312 | kfree(ep); |
313 | } | |
314 | ||
315 | static void release_ep_resources(struct c4iw_ep *ep) | |
316 | { | |
317 | set_bit(RELEASE_RESOURCES, &ep->com.flags); | |
318 | c4iw_put_ep(&ep->com); | |
319 | } | |
320 | ||
cfdda9d7 SW |
321 | static int status2errno(int status) |
322 | { | |
323 | switch (status) { | |
324 | case CPL_ERR_NONE: | |
325 | return 0; | |
326 | case CPL_ERR_CONN_RESET: | |
327 | return -ECONNRESET; | |
328 | case CPL_ERR_ARP_MISS: | |
329 | return -EHOSTUNREACH; | |
330 | case CPL_ERR_CONN_TIMEDOUT: | |
331 | return -ETIMEDOUT; | |
332 | case CPL_ERR_TCAM_FULL: | |
333 | return -ENOMEM; | |
334 | case CPL_ERR_CONN_EXIST: | |
335 | return -EADDRINUSE; | |
336 | default: | |
337 | return -EIO; | |
338 | } | |
339 | } | |
340 | ||
341 | /* | |
342 | * Try and reuse skbs already allocated... | |
343 | */ | |
344 | static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp) | |
345 | { | |
346 | if (skb && !skb_is_nonlinear(skb) && !skb_cloned(skb)) { | |
347 | skb_trim(skb, 0); | |
348 | skb_get(skb); | |
349 | skb_reset_transport_header(skb); | |
350 | } else { | |
351 | skb = alloc_skb(len, gfp); | |
352 | } | |
b38a0ad8 | 353 | t4_set_arp_err_handler(skb, NULL, NULL); |
cfdda9d7 SW |
354 | return skb; |
355 | } | |
356 | ||
830662f6 VP |
357 | static struct net_device *get_real_dev(struct net_device *egress_dev) |
358 | { | |
11b8e22d | 359 | return rdma_vlan_dev_real_dev(egress_dev) ? : egress_dev; |
830662f6 VP |
360 | } |
361 | ||
362 | static int our_interface(struct c4iw_dev *dev, struct net_device *egress_dev) | |
363 | { | |
364 | int i; | |
365 | ||
366 | egress_dev = get_real_dev(egress_dev); | |
367 | for (i = 0; i < dev->rdev.lldi.nports; i++) | |
368 | if (dev->rdev.lldi.ports[i] == egress_dev) | |
369 | return 1; | |
370 | return 0; | |
371 | } | |
372 | ||
373 | static struct dst_entry *find_route6(struct c4iw_dev *dev, __u8 *local_ip, | |
374 | __u8 *peer_ip, __be16 local_port, | |
375 | __be16 peer_port, u8 tos, | |
376 | __u32 sin6_scope_id) | |
377 | { | |
378 | struct dst_entry *dst = NULL; | |
379 | ||
380 | if (IS_ENABLED(CONFIG_IPV6)) { | |
381 | struct flowi6 fl6; | |
382 | ||
383 | memset(&fl6, 0, sizeof(fl6)); | |
384 | memcpy(&fl6.daddr, peer_ip, 16); | |
385 | memcpy(&fl6.saddr, local_ip, 16); | |
386 | if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL) | |
387 | fl6.flowi6_oif = sin6_scope_id; | |
388 | dst = ip6_route_output(&init_net, NULL, &fl6); | |
389 | if (!dst) | |
390 | goto out; | |
391 | if (!our_interface(dev, ip6_dst_idev(dst)->dev) && | |
392 | !(ip6_dst_idev(dst)->dev->flags & IFF_LOOPBACK)) { | |
393 | dst_release(dst); | |
394 | dst = NULL; | |
395 | } | |
396 | } | |
397 | ||
398 | out: | |
399 | return dst; | |
400 | } | |
401 | ||
402 | static struct dst_entry *find_route(struct c4iw_dev *dev, __be32 local_ip, | |
cfdda9d7 SW |
403 | __be32 peer_ip, __be16 local_port, |
404 | __be16 peer_port, u8 tos) | |
405 | { | |
406 | struct rtable *rt; | |
31e4543d | 407 | struct flowi4 fl4; |
830662f6 | 408 | struct neighbour *n; |
78fbfd8a | 409 | |
31e4543d | 410 | rt = ip_route_output_ports(&init_net, &fl4, NULL, peer_ip, local_ip, |
78fbfd8a DM |
411 | peer_port, local_port, IPPROTO_TCP, |
412 | tos, 0); | |
b23dd4fe | 413 | if (IS_ERR(rt)) |
cfdda9d7 | 414 | return NULL; |
830662f6 VP |
415 | n = dst_neigh_lookup(&rt->dst, &peer_ip); |
416 | if (!n) | |
417 | return NULL; | |
f8e81908 SW |
418 | if (!our_interface(dev, n->dev) && |
419 | !(n->dev->flags & IFF_LOOPBACK)) { | |
d480201b | 420 | neigh_release(n); |
830662f6 VP |
421 | dst_release(&rt->dst); |
422 | return NULL; | |
423 | } | |
424 | neigh_release(n); | |
425 | return &rt->dst; | |
cfdda9d7 SW |
426 | } |
427 | ||
428 | static void arp_failure_discard(void *handle, struct sk_buff *skb) | |
429 | { | |
430 | PDBG("%s c4iw_dev %p\n", __func__, handle); | |
431 | kfree_skb(skb); | |
432 | } | |
433 | ||
434 | /* | |
435 | * Handle an ARP failure for an active open. | |
436 | */ | |
437 | static void act_open_req_arp_failure(void *handle, struct sk_buff *skb) | |
438 | { | |
5dab6d3a H |
439 | struct c4iw_ep *ep = handle; |
440 | ||
cfdda9d7 SW |
441 | printk(KERN_ERR MOD "ARP failure duing connect\n"); |
442 | kfree_skb(skb); | |
5dab6d3a H |
443 | connect_reply_upcall(ep, -EHOSTUNREACH); |
444 | state_set(&ep->com, DEAD); | |
445 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid); | |
446 | cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid); | |
447 | dst_release(ep->dst); | |
448 | cxgb4_l2t_release(ep->l2t); | |
449 | c4iw_put_ep(&ep->com); | |
cfdda9d7 SW |
450 | } |
451 | ||
452 | /* | |
453 | * Handle an ARP failure for a CPL_ABORT_REQ. Change it into a no RST variant | |
454 | * and send it along. | |
455 | */ | |
456 | static void abort_arp_failure(void *handle, struct sk_buff *skb) | |
457 | { | |
458 | struct c4iw_rdev *rdev = handle; | |
459 | struct cpl_abort_req *req = cplhdr(skb); | |
460 | ||
461 | PDBG("%s rdev %p\n", __func__, rdev); | |
462 | req->cmd = CPL_ABORT_NO_RST; | |
463 | c4iw_ofld_send(rdev, skb); | |
464 | } | |
465 | ||
466 | static void send_flowc(struct c4iw_ep *ep, struct sk_buff *skb) | |
467 | { | |
468 | unsigned int flowclen = 80; | |
469 | struct fw_flowc_wr *flowc; | |
470 | int i; | |
471 | ||
472 | skb = get_skb(skb, flowclen, GFP_KERNEL); | |
473 | flowc = (struct fw_flowc_wr *)__skb_put(skb, flowclen); | |
474 | ||
e2ac9628 HS |
475 | flowc->op_to_nparams = cpu_to_be32(FW_WR_OP_V(FW_FLOWC_WR) | |
476 | FW_FLOWC_WR_NPARAMS_V(8)); | |
477 | flowc->flowid_len16 = cpu_to_be32(FW_WR_LEN16_V(DIV_ROUND_UP(flowclen, | |
478 | 16)) | FW_WR_FLOWID_V(ep->hwtid)); | |
cfdda9d7 SW |
479 | |
480 | flowc->mnemval[0].mnemonic = FW_FLOWC_MNEM_PFNVFN; | |
5167865a | 481 | flowc->mnemval[0].val = cpu_to_be32(FW_PFVF_CMD_PFN_V |
35b1de55 | 482 | (ep->com.dev->rdev.lldi.pf)); |
cfdda9d7 SW |
483 | flowc->mnemval[1].mnemonic = FW_FLOWC_MNEM_CH; |
484 | flowc->mnemval[1].val = cpu_to_be32(ep->tx_chan); | |
485 | flowc->mnemval[2].mnemonic = FW_FLOWC_MNEM_PORT; | |
486 | flowc->mnemval[2].val = cpu_to_be32(ep->tx_chan); | |
487 | flowc->mnemval[3].mnemonic = FW_FLOWC_MNEM_IQID; | |
488 | flowc->mnemval[3].val = cpu_to_be32(ep->rss_qid); | |
489 | flowc->mnemval[4].mnemonic = FW_FLOWC_MNEM_SNDNXT; | |
490 | flowc->mnemval[4].val = cpu_to_be32(ep->snd_seq); | |
491 | flowc->mnemval[5].mnemonic = FW_FLOWC_MNEM_RCVNXT; | |
492 | flowc->mnemval[5].val = cpu_to_be32(ep->rcv_seq); | |
493 | flowc->mnemval[6].mnemonic = FW_FLOWC_MNEM_SNDBUF; | |
b408ff28 | 494 | flowc->mnemval[6].val = cpu_to_be32(ep->snd_win); |
cfdda9d7 SW |
495 | flowc->mnemval[7].mnemonic = FW_FLOWC_MNEM_MSS; |
496 | flowc->mnemval[7].val = cpu_to_be32(ep->emss); | |
497 | /* Pad WR to 16 byte boundary */ | |
498 | flowc->mnemval[8].mnemonic = 0; | |
499 | flowc->mnemval[8].val = 0; | |
500 | for (i = 0; i < 9; i++) { | |
501 | flowc->mnemval[i].r4[0] = 0; | |
502 | flowc->mnemval[i].r4[1] = 0; | |
503 | flowc->mnemval[i].r4[2] = 0; | |
504 | } | |
505 | ||
506 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
507 | c4iw_ofld_send(&ep->com.dev->rdev, skb); | |
508 | } | |
509 | ||
510 | static int send_halfclose(struct c4iw_ep *ep, gfp_t gfp) | |
511 | { | |
512 | struct cpl_close_con_req *req; | |
513 | struct sk_buff *skb; | |
514 | int wrlen = roundup(sizeof *req, 16); | |
515 | ||
516 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
517 | skb = get_skb(NULL, wrlen, gfp); | |
518 | if (!skb) { | |
519 | printk(KERN_ERR MOD "%s - failed to alloc skb\n", __func__); | |
520 | return -ENOMEM; | |
521 | } | |
522 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
523 | t4_set_arp_err_handler(skb, NULL, arp_failure_discard); | |
524 | req = (struct cpl_close_con_req *) skb_put(skb, wrlen); | |
525 | memset(req, 0, wrlen); | |
526 | INIT_TP_WR(req, ep->hwtid); | |
527 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, | |
528 | ep->hwtid)); | |
529 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); | |
530 | } | |
531 | ||
532 | static int send_abort(struct c4iw_ep *ep, struct sk_buff *skb, gfp_t gfp) | |
533 | { | |
534 | struct cpl_abort_req *req; | |
535 | int wrlen = roundup(sizeof *req, 16); | |
536 | ||
537 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
538 | skb = get_skb(skb, wrlen, gfp); | |
539 | if (!skb) { | |
540 | printk(KERN_ERR MOD "%s - failed to alloc skb.\n", | |
541 | __func__); | |
542 | return -ENOMEM; | |
543 | } | |
544 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
545 | t4_set_arp_err_handler(skb, &ep->com.dev->rdev, abort_arp_failure); | |
546 | req = (struct cpl_abort_req *) skb_put(skb, wrlen); | |
547 | memset(req, 0, wrlen); | |
548 | INIT_TP_WR(req, ep->hwtid); | |
549 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_REQ, ep->hwtid)); | |
550 | req->cmd = CPL_ABORT_SEND_RST; | |
551 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); | |
552 | } | |
553 | ||
9eccfe10 SW |
554 | /* |
555 | * c4iw_form_pm_msg - Form a port mapper message with mapping info | |
556 | */ | |
557 | static void c4iw_form_pm_msg(struct c4iw_ep *ep, | |
558 | struct iwpm_sa_data *pm_msg) | |
559 | { | |
560 | memcpy(&pm_msg->loc_addr, &ep->com.local_addr, | |
561 | sizeof(ep->com.local_addr)); | |
562 | memcpy(&pm_msg->rem_addr, &ep->com.remote_addr, | |
563 | sizeof(ep->com.remote_addr)); | |
564 | } | |
565 | ||
566 | /* | |
567 | * c4iw_form_reg_msg - Form a port mapper message with dev info | |
568 | */ | |
569 | static void c4iw_form_reg_msg(struct c4iw_dev *dev, | |
570 | struct iwpm_dev_data *pm_msg) | |
571 | { | |
572 | memcpy(pm_msg->dev_name, dev->ibdev.name, IWPM_DEVNAME_SIZE); | |
573 | memcpy(pm_msg->if_name, dev->rdev.lldi.ports[0]->name, | |
574 | IWPM_IFNAME_SIZE); | |
575 | } | |
576 | ||
577 | static void c4iw_record_pm_msg(struct c4iw_ep *ep, | |
578 | struct iwpm_sa_data *pm_msg) | |
579 | { | |
580 | memcpy(&ep->com.mapped_local_addr, &pm_msg->mapped_loc_addr, | |
581 | sizeof(ep->com.mapped_local_addr)); | |
582 | memcpy(&ep->com.mapped_remote_addr, &pm_msg->mapped_rem_addr, | |
583 | sizeof(ep->com.mapped_remote_addr)); | |
584 | } | |
585 | ||
940fd304 | 586 | static int get_remote_addr(struct c4iw_ep *parent_ep, struct c4iw_ep *child_ep) |
5b6b8fe6 SW |
587 | { |
588 | int ret; | |
589 | ||
940fd304 SW |
590 | print_addr(&parent_ep->com, __func__, "get_remote_addr parent_ep "); |
591 | print_addr(&child_ep->com, __func__, "get_remote_addr child_ep "); | |
5b6b8fe6 | 592 | |
940fd304 SW |
593 | ret = iwpm_get_remote_info(&parent_ep->com.mapped_local_addr, |
594 | &child_ep->com.mapped_remote_addr, | |
595 | &child_ep->com.remote_addr, RDMA_NL_C4IW); | |
5b6b8fe6 | 596 | if (ret) |
940fd304 | 597 | PDBG("Unable to find remote peer addr info - err %d\n", ret); |
5b6b8fe6 SW |
598 | |
599 | return ret; | |
600 | } | |
601 | ||
92e7ae71 | 602 | static void best_mtu(const unsigned short *mtus, unsigned short mtu, |
04524a47 | 603 | unsigned int *idx, int use_ts, int ipv6) |
92e7ae71 | 604 | { |
04524a47 H |
605 | unsigned short hdr_size = (ipv6 ? |
606 | sizeof(struct ipv6hdr) : | |
607 | sizeof(struct iphdr)) + | |
92e7ae71 | 608 | sizeof(struct tcphdr) + |
04524a47 H |
609 | (use_ts ? |
610 | round_up(TCPOLEN_TIMESTAMP, 4) : 0); | |
92e7ae71 HS |
611 | unsigned short data_size = mtu - hdr_size; |
612 | ||
613 | cxgb4_best_aligned_mtu(mtus, hdr_size, data_size, 8, idx); | |
614 | } | |
615 | ||
cfdda9d7 SW |
616 | static int send_connect(struct c4iw_ep *ep) |
617 | { | |
618 | struct cpl_act_open_req *req; | |
f079af7a | 619 | struct cpl_t5_act_open_req *t5_req; |
830662f6 VP |
620 | struct cpl_act_open_req6 *req6; |
621 | struct cpl_t5_act_open_req6 *t5_req6; | |
cfdda9d7 SW |
622 | struct sk_buff *skb; |
623 | u64 opt0; | |
624 | u32 opt2; | |
625 | unsigned int mtu_idx; | |
626 | int wscale; | |
830662f6 VP |
627 | int wrlen; |
628 | int sizev4 = is_t4(ep->com.dev->rdev.lldi.adapter_type) ? | |
629 | sizeof(struct cpl_act_open_req) : | |
630 | sizeof(struct cpl_t5_act_open_req); | |
631 | int sizev6 = is_t4(ep->com.dev->rdev.lldi.adapter_type) ? | |
632 | sizeof(struct cpl_act_open_req6) : | |
633 | sizeof(struct cpl_t5_act_open_req6); | |
9eccfe10 SW |
634 | struct sockaddr_in *la = (struct sockaddr_in *) |
635 | &ep->com.mapped_local_addr; | |
636 | struct sockaddr_in *ra = (struct sockaddr_in *) | |
637 | &ep->com.mapped_remote_addr; | |
638 | struct sockaddr_in6 *la6 = (struct sockaddr_in6 *) | |
639 | &ep->com.mapped_local_addr; | |
640 | struct sockaddr_in6 *ra6 = (struct sockaddr_in6 *) | |
641 | &ep->com.mapped_remote_addr; | |
b408ff28 | 642 | int win; |
830662f6 VP |
643 | |
644 | wrlen = (ep->com.remote_addr.ss_family == AF_INET) ? | |
645 | roundup(sizev4, 16) : | |
646 | roundup(sizev6, 16); | |
cfdda9d7 SW |
647 | |
648 | PDBG("%s ep %p atid %u\n", __func__, ep, ep->atid); | |
649 | ||
650 | skb = get_skb(NULL, wrlen, GFP_KERNEL); | |
651 | if (!skb) { | |
652 | printk(KERN_ERR MOD "%s - failed to alloc skb.\n", | |
653 | __func__); | |
654 | return -ENOMEM; | |
655 | } | |
d4f1a5c6 | 656 | set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx); |
cfdda9d7 | 657 | |
92e7ae71 | 658 | best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx, |
04524a47 H |
659 | enable_tcp_timestamps, |
660 | (AF_INET == ep->com.remote_addr.ss_family) ? 0 : 1); | |
cfdda9d7 | 661 | wscale = compute_wscale(rcv_win); |
b408ff28 HS |
662 | |
663 | /* | |
664 | * Specify the largest window that will fit in opt0. The | |
665 | * remainder will be specified in the rx_data_ack. | |
666 | */ | |
667 | win = ep->rcv_win >> 10; | |
d7990b0c AB |
668 | if (win > RCV_BUFSIZ_M) |
669 | win = RCV_BUFSIZ_M; | |
b408ff28 | 670 | |
6c53e938 | 671 | opt0 = (nocong ? NO_CONG_F : 0) | |
d7990b0c | 672 | KEEP_ALIVE_F | |
6c53e938 | 673 | DELACK_F | |
d7990b0c AB |
674 | WND_SCALE_V(wscale) | |
675 | MSS_IDX_V(mtu_idx) | | |
676 | L2T_IDX_V(ep->l2t->idx) | | |
677 | TX_CHAN_V(ep->tx_chan) | | |
678 | SMAC_SEL_V(ep->smac_idx) | | |
6c53e938 | 679 | DSCP_V(ep->tos) | |
d7990b0c AB |
680 | ULP_MODE_V(ULP_MODE_TCPDDP) | |
681 | RCV_BUFSIZ_V(win); | |
682 | opt2 = RX_CHANNEL_V(0) | | |
6c53e938 | 683 | CCTRL_ECN_V(enable_ecn) | |
d7990b0c | 684 | RSS_QUEUE_VALID_F | RSS_QUEUE_V(ep->rss_qid); |
cfdda9d7 | 685 | if (enable_tcp_timestamps) |
6c53e938 | 686 | opt2 |= TSTAMPS_EN_F; |
cfdda9d7 | 687 | if (enable_tcp_sack) |
6c53e938 | 688 | opt2 |= SACK_EN_F; |
cfdda9d7 | 689 | if (wscale && enable_tcp_window_scaling) |
d7990b0c | 690 | opt2 |= WND_SCALE_EN_F; |
92e5011a | 691 | if (is_t5(ep->com.dev->rdev.lldi.adapter_type)) { |
d7990b0c | 692 | opt2 |= T5_OPT_2_VALID_F; |
cf7fe64a | 693 | opt2 |= CONG_CNTRL_V(CONG_ALG_TAHOE); |
0b741047 | 694 | opt2 |= T5_ISS_F; |
92e5011a | 695 | } |
5dab6d3a | 696 | t4_set_arp_err_handler(skb, ep, act_open_req_arp_failure); |
cfdda9d7 | 697 | |
f079af7a | 698 | if (is_t4(ep->com.dev->rdev.lldi.adapter_type)) { |
830662f6 VP |
699 | if (ep->com.remote_addr.ss_family == AF_INET) { |
700 | req = (struct cpl_act_open_req *) skb_put(skb, wrlen); | |
701 | INIT_TP_WR(req, 0); | |
702 | OPCODE_TID(req) = cpu_to_be32( | |
703 | MK_OPCODE_TID(CPL_ACT_OPEN_REQ, | |
704 | ((ep->rss_qid << 14) | ep->atid))); | |
705 | req->local_port = la->sin_port; | |
706 | req->peer_port = ra->sin_port; | |
707 | req->local_ip = la->sin_addr.s_addr; | |
708 | req->peer_ip = ra->sin_addr.s_addr; | |
709 | req->opt0 = cpu_to_be64(opt0); | |
41b4f86c KS |
710 | req->params = cpu_to_be32(cxgb4_select_ntuple( |
711 | ep->com.dev->rdev.lldi.ports[0], | |
712 | ep->l2t)); | |
830662f6 VP |
713 | req->opt2 = cpu_to_be32(opt2); |
714 | } else { | |
715 | req6 = (struct cpl_act_open_req6 *)skb_put(skb, wrlen); | |
716 | ||
717 | INIT_TP_WR(req6, 0); | |
718 | OPCODE_TID(req6) = cpu_to_be32( | |
719 | MK_OPCODE_TID(CPL_ACT_OPEN_REQ6, | |
720 | ((ep->rss_qid<<14)|ep->atid))); | |
721 | req6->local_port = la6->sin6_port; | |
722 | req6->peer_port = ra6->sin6_port; | |
723 | req6->local_ip_hi = *((__be64 *) | |
724 | (la6->sin6_addr.s6_addr)); | |
725 | req6->local_ip_lo = *((__be64 *) | |
726 | (la6->sin6_addr.s6_addr + 8)); | |
727 | req6->peer_ip_hi = *((__be64 *) | |
728 | (ra6->sin6_addr.s6_addr)); | |
729 | req6->peer_ip_lo = *((__be64 *) | |
730 | (ra6->sin6_addr.s6_addr + 8)); | |
731 | req6->opt0 = cpu_to_be64(opt0); | |
41b4f86c KS |
732 | req6->params = cpu_to_be32(cxgb4_select_ntuple( |
733 | ep->com.dev->rdev.lldi.ports[0], | |
734 | ep->l2t)); | |
830662f6 VP |
735 | req6->opt2 = cpu_to_be32(opt2); |
736 | } | |
f079af7a | 737 | } else { |
92e7ae71 HS |
738 | u32 isn = (prandom_u32() & ~7UL) - 1; |
739 | ||
92e7ae71 HS |
740 | if (peer2peer) |
741 | isn += 4; | |
742 | ||
830662f6 VP |
743 | if (ep->com.remote_addr.ss_family == AF_INET) { |
744 | t5_req = (struct cpl_t5_act_open_req *) | |
745 | skb_put(skb, wrlen); | |
746 | INIT_TP_WR(t5_req, 0); | |
747 | OPCODE_TID(t5_req) = cpu_to_be32( | |
f079af7a VP |
748 | MK_OPCODE_TID(CPL_ACT_OPEN_REQ, |
749 | ((ep->rss_qid << 14) | ep->atid))); | |
830662f6 VP |
750 | t5_req->local_port = la->sin_port; |
751 | t5_req->peer_port = ra->sin_port; | |
752 | t5_req->local_ip = la->sin_addr.s_addr; | |
753 | t5_req->peer_ip = ra->sin_addr.s_addr; | |
754 | t5_req->opt0 = cpu_to_be64(opt0); | |
d7990b0c | 755 | t5_req->params = cpu_to_be64(FILTER_TUPLE_V( |
41b4f86c KS |
756 | cxgb4_select_ntuple( |
757 | ep->com.dev->rdev.lldi.ports[0], | |
758 | ep->l2t))); | |
92e7ae71 HS |
759 | t5_req->rsvd = cpu_to_be32(isn); |
760 | PDBG("%s snd_isn %u\n", __func__, | |
761 | be32_to_cpu(t5_req->rsvd)); | |
830662f6 VP |
762 | t5_req->opt2 = cpu_to_be32(opt2); |
763 | } else { | |
764 | t5_req6 = (struct cpl_t5_act_open_req6 *) | |
765 | skb_put(skb, wrlen); | |
766 | INIT_TP_WR(t5_req6, 0); | |
767 | OPCODE_TID(t5_req6) = cpu_to_be32( | |
768 | MK_OPCODE_TID(CPL_ACT_OPEN_REQ6, | |
769 | ((ep->rss_qid<<14)|ep->atid))); | |
770 | t5_req6->local_port = la6->sin6_port; | |
771 | t5_req6->peer_port = ra6->sin6_port; | |
772 | t5_req6->local_ip_hi = *((__be64 *) | |
773 | (la6->sin6_addr.s6_addr)); | |
774 | t5_req6->local_ip_lo = *((__be64 *) | |
775 | (la6->sin6_addr.s6_addr + 8)); | |
776 | t5_req6->peer_ip_hi = *((__be64 *) | |
777 | (ra6->sin6_addr.s6_addr)); | |
778 | t5_req6->peer_ip_lo = *((__be64 *) | |
779 | (ra6->sin6_addr.s6_addr + 8)); | |
780 | t5_req6->opt0 = cpu_to_be64(opt0); | |
d7990b0c | 781 | t5_req6->params = cpu_to_be64(FILTER_TUPLE_V( |
41b4f86c KS |
782 | cxgb4_select_ntuple( |
783 | ep->com.dev->rdev.lldi.ports[0], | |
da22b896 | 784 | ep->l2t))); |
92e7ae71 HS |
785 | t5_req6->rsvd = cpu_to_be32(isn); |
786 | PDBG("%s snd_isn %u\n", __func__, | |
787 | be32_to_cpu(t5_req6->rsvd)); | |
830662f6 VP |
788 | t5_req6->opt2 = cpu_to_be32(opt2); |
789 | } | |
f079af7a VP |
790 | } |
791 | ||
793dad94 | 792 | set_bit(ACT_OPEN_REQ, &ep->com.history); |
cfdda9d7 SW |
793 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
794 | } | |
795 | ||
d2fe99e8 KS |
796 | static void send_mpa_req(struct c4iw_ep *ep, struct sk_buff *skb, |
797 | u8 mpa_rev_to_use) | |
cfdda9d7 SW |
798 | { |
799 | int mpalen, wrlen; | |
800 | struct fw_ofld_tx_data_wr *req; | |
801 | struct mpa_message *mpa; | |
d2fe99e8 | 802 | struct mpa_v2_conn_params mpa_v2_params; |
cfdda9d7 SW |
803 | |
804 | PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); | |
805 | ||
806 | BUG_ON(skb_cloned(skb)); | |
807 | ||
808 | mpalen = sizeof(*mpa) + ep->plen; | |
d2fe99e8 KS |
809 | if (mpa_rev_to_use == 2) |
810 | mpalen += sizeof(struct mpa_v2_conn_params); | |
cfdda9d7 SW |
811 | wrlen = roundup(mpalen + sizeof *req, 16); |
812 | skb = get_skb(skb, wrlen, GFP_KERNEL); | |
813 | if (!skb) { | |
814 | connect_reply_upcall(ep, -ENOMEM); | |
815 | return; | |
816 | } | |
817 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
818 | ||
819 | req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen); | |
820 | memset(req, 0, wrlen); | |
821 | req->op_to_immdlen = cpu_to_be32( | |
e2ac9628 HS |
822 | FW_WR_OP_V(FW_OFLD_TX_DATA_WR) | |
823 | FW_WR_COMPL_F | | |
824 | FW_WR_IMMDLEN_V(mpalen)); | |
cfdda9d7 | 825 | req->flowid_len16 = cpu_to_be32( |
e2ac9628 HS |
826 | FW_WR_FLOWID_V(ep->hwtid) | |
827 | FW_WR_LEN16_V(wrlen >> 4)); | |
cfdda9d7 SW |
828 | req->plen = cpu_to_be32(mpalen); |
829 | req->tunnel_to_proxy = cpu_to_be32( | |
e2ac9628 HS |
830 | FW_OFLD_TX_DATA_WR_FLUSH_F | |
831 | FW_OFLD_TX_DATA_WR_SHOVE_F); | |
cfdda9d7 SW |
832 | |
833 | mpa = (struct mpa_message *)(req + 1); | |
834 | memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)); | |
835 | mpa->flags = (crc_enabled ? MPA_CRC : 0) | | |
d2fe99e8 KS |
836 | (markers_enabled ? MPA_MARKERS : 0) | |
837 | (mpa_rev_to_use == 2 ? MPA_ENHANCED_RDMA_CONN : 0); | |
cfdda9d7 | 838 | mpa->private_data_size = htons(ep->plen); |
d2fe99e8 | 839 | mpa->revision = mpa_rev_to_use; |
01b225e1 | 840 | if (mpa_rev_to_use == 1) { |
d2fe99e8 | 841 | ep->tried_with_mpa_v1 = 1; |
01b225e1 KS |
842 | ep->retry_with_mpa_v1 = 0; |
843 | } | |
d2fe99e8 KS |
844 | |
845 | if (mpa_rev_to_use == 2) { | |
f747c34a RD |
846 | mpa->private_data_size = htons(ntohs(mpa->private_data_size) + |
847 | sizeof (struct mpa_v2_conn_params)); | |
4c2c5763 HS |
848 | PDBG("%s initiator ird %u ord %u\n", __func__, ep->ird, |
849 | ep->ord); | |
d2fe99e8 KS |
850 | mpa_v2_params.ird = htons((u16)ep->ird); |
851 | mpa_v2_params.ord = htons((u16)ep->ord); | |
852 | ||
853 | if (peer2peer) { | |
854 | mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); | |
855 | if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) | |
856 | mpa_v2_params.ord |= | |
857 | htons(MPA_V2_RDMA_WRITE_RTR); | |
858 | else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) | |
859 | mpa_v2_params.ord |= | |
860 | htons(MPA_V2_RDMA_READ_RTR); | |
861 | } | |
862 | memcpy(mpa->private_data, &mpa_v2_params, | |
863 | sizeof(struct mpa_v2_conn_params)); | |
cfdda9d7 | 864 | |
d2fe99e8 KS |
865 | if (ep->plen) |
866 | memcpy(mpa->private_data + | |
867 | sizeof(struct mpa_v2_conn_params), | |
868 | ep->mpa_pkt + sizeof(*mpa), ep->plen); | |
869 | } else | |
870 | if (ep->plen) | |
871 | memcpy(mpa->private_data, | |
872 | ep->mpa_pkt + sizeof(*mpa), ep->plen); | |
cfdda9d7 SW |
873 | |
874 | /* | |
875 | * Reference the mpa skb. This ensures the data area | |
876 | * will remain in memory until the hw acks the tx. | |
877 | * Function fw4_ack() will deref it. | |
878 | */ | |
879 | skb_get(skb); | |
880 | t4_set_arp_err_handler(skb, NULL, arp_failure_discard); | |
881 | BUG_ON(ep->mpa_skb); | |
882 | ep->mpa_skb = skb; | |
883 | c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); | |
884 | start_ep_timer(ep); | |
a7db89eb | 885 | __state_set(&ep->com, MPA_REQ_SENT); |
cfdda9d7 | 886 | ep->mpa_attr.initiator = 1; |
9c88aa00 | 887 | ep->snd_seq += mpalen; |
cfdda9d7 SW |
888 | return; |
889 | } | |
890 | ||
891 | static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen) | |
892 | { | |
893 | int mpalen, wrlen; | |
894 | struct fw_ofld_tx_data_wr *req; | |
895 | struct mpa_message *mpa; | |
896 | struct sk_buff *skb; | |
d2fe99e8 | 897 | struct mpa_v2_conn_params mpa_v2_params; |
cfdda9d7 SW |
898 | |
899 | PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); | |
900 | ||
901 | mpalen = sizeof(*mpa) + plen; | |
d2fe99e8 KS |
902 | if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) |
903 | mpalen += sizeof(struct mpa_v2_conn_params); | |
cfdda9d7 SW |
904 | wrlen = roundup(mpalen + sizeof *req, 16); |
905 | ||
906 | skb = get_skb(NULL, wrlen, GFP_KERNEL); | |
907 | if (!skb) { | |
908 | printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__); | |
909 | return -ENOMEM; | |
910 | } | |
911 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
912 | ||
913 | req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen); | |
914 | memset(req, 0, wrlen); | |
915 | req->op_to_immdlen = cpu_to_be32( | |
e2ac9628 HS |
916 | FW_WR_OP_V(FW_OFLD_TX_DATA_WR) | |
917 | FW_WR_COMPL_F | | |
918 | FW_WR_IMMDLEN_V(mpalen)); | |
cfdda9d7 | 919 | req->flowid_len16 = cpu_to_be32( |
e2ac9628 HS |
920 | FW_WR_FLOWID_V(ep->hwtid) | |
921 | FW_WR_LEN16_V(wrlen >> 4)); | |
cfdda9d7 SW |
922 | req->plen = cpu_to_be32(mpalen); |
923 | req->tunnel_to_proxy = cpu_to_be32( | |
e2ac9628 HS |
924 | FW_OFLD_TX_DATA_WR_FLUSH_F | |
925 | FW_OFLD_TX_DATA_WR_SHOVE_F); | |
cfdda9d7 SW |
926 | |
927 | mpa = (struct mpa_message *)(req + 1); | |
928 | memset(mpa, 0, sizeof(*mpa)); | |
929 | memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); | |
930 | mpa->flags = MPA_REJECT; | |
fe7e0a4d | 931 | mpa->revision = ep->mpa_attr.version; |
cfdda9d7 | 932 | mpa->private_data_size = htons(plen); |
d2fe99e8 KS |
933 | |
934 | if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { | |
935 | mpa->flags |= MPA_ENHANCED_RDMA_CONN; | |
f747c34a RD |
936 | mpa->private_data_size = htons(ntohs(mpa->private_data_size) + |
937 | sizeof (struct mpa_v2_conn_params)); | |
d2fe99e8 KS |
938 | mpa_v2_params.ird = htons(((u16)ep->ird) | |
939 | (peer2peer ? MPA_V2_PEER2PEER_MODEL : | |
940 | 0)); | |
941 | mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ? | |
942 | (p2p_type == | |
943 | FW_RI_INIT_P2PTYPE_RDMA_WRITE ? | |
944 | MPA_V2_RDMA_WRITE_RTR : p2p_type == | |
945 | FW_RI_INIT_P2PTYPE_READ_REQ ? | |
946 | MPA_V2_RDMA_READ_RTR : 0) : 0)); | |
947 | memcpy(mpa->private_data, &mpa_v2_params, | |
948 | sizeof(struct mpa_v2_conn_params)); | |
949 | ||
950 | if (ep->plen) | |
951 | memcpy(mpa->private_data + | |
952 | sizeof(struct mpa_v2_conn_params), pdata, plen); | |
953 | } else | |
954 | if (plen) | |
955 | memcpy(mpa->private_data, pdata, plen); | |
cfdda9d7 SW |
956 | |
957 | /* | |
958 | * Reference the mpa skb again. This ensures the data area | |
959 | * will remain in memory until the hw acks the tx. | |
960 | * Function fw4_ack() will deref it. | |
961 | */ | |
962 | skb_get(skb); | |
963 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
964 | t4_set_arp_err_handler(skb, NULL, arp_failure_discard); | |
965 | BUG_ON(ep->mpa_skb); | |
966 | ep->mpa_skb = skb; | |
9c88aa00 | 967 | ep->snd_seq += mpalen; |
cfdda9d7 SW |
968 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
969 | } | |
970 | ||
971 | static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen) | |
972 | { | |
973 | int mpalen, wrlen; | |
974 | struct fw_ofld_tx_data_wr *req; | |
975 | struct mpa_message *mpa; | |
976 | struct sk_buff *skb; | |
d2fe99e8 | 977 | struct mpa_v2_conn_params mpa_v2_params; |
cfdda9d7 SW |
978 | |
979 | PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); | |
980 | ||
981 | mpalen = sizeof(*mpa) + plen; | |
d2fe99e8 KS |
982 | if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) |
983 | mpalen += sizeof(struct mpa_v2_conn_params); | |
cfdda9d7 SW |
984 | wrlen = roundup(mpalen + sizeof *req, 16); |
985 | ||
986 | skb = get_skb(NULL, wrlen, GFP_KERNEL); | |
987 | if (!skb) { | |
988 | printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__); | |
989 | return -ENOMEM; | |
990 | } | |
991 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
992 | ||
993 | req = (struct fw_ofld_tx_data_wr *) skb_put(skb, wrlen); | |
994 | memset(req, 0, wrlen); | |
995 | req->op_to_immdlen = cpu_to_be32( | |
e2ac9628 HS |
996 | FW_WR_OP_V(FW_OFLD_TX_DATA_WR) | |
997 | FW_WR_COMPL_F | | |
998 | FW_WR_IMMDLEN_V(mpalen)); | |
cfdda9d7 | 999 | req->flowid_len16 = cpu_to_be32( |
e2ac9628 HS |
1000 | FW_WR_FLOWID_V(ep->hwtid) | |
1001 | FW_WR_LEN16_V(wrlen >> 4)); | |
cfdda9d7 SW |
1002 | req->plen = cpu_to_be32(mpalen); |
1003 | req->tunnel_to_proxy = cpu_to_be32( | |
e2ac9628 HS |
1004 | FW_OFLD_TX_DATA_WR_FLUSH_F | |
1005 | FW_OFLD_TX_DATA_WR_SHOVE_F); | |
cfdda9d7 SW |
1006 | |
1007 | mpa = (struct mpa_message *)(req + 1); | |
1008 | memset(mpa, 0, sizeof(*mpa)); | |
1009 | memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); | |
1010 | mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) | | |
1011 | (markers_enabled ? MPA_MARKERS : 0); | |
d2fe99e8 | 1012 | mpa->revision = ep->mpa_attr.version; |
cfdda9d7 | 1013 | mpa->private_data_size = htons(plen); |
d2fe99e8 KS |
1014 | |
1015 | if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { | |
1016 | mpa->flags |= MPA_ENHANCED_RDMA_CONN; | |
f747c34a RD |
1017 | mpa->private_data_size = htons(ntohs(mpa->private_data_size) + |
1018 | sizeof (struct mpa_v2_conn_params)); | |
d2fe99e8 KS |
1019 | mpa_v2_params.ird = htons((u16)ep->ird); |
1020 | mpa_v2_params.ord = htons((u16)ep->ord); | |
1021 | if (peer2peer && (ep->mpa_attr.p2p_type != | |
1022 | FW_RI_INIT_P2PTYPE_DISABLED)) { | |
1023 | mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); | |
1024 | ||
1025 | if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) | |
1026 | mpa_v2_params.ord |= | |
1027 | htons(MPA_V2_RDMA_WRITE_RTR); | |
1028 | else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) | |
1029 | mpa_v2_params.ord |= | |
1030 | htons(MPA_V2_RDMA_READ_RTR); | |
1031 | } | |
1032 | ||
1033 | memcpy(mpa->private_data, &mpa_v2_params, | |
1034 | sizeof(struct mpa_v2_conn_params)); | |
1035 | ||
1036 | if (ep->plen) | |
1037 | memcpy(mpa->private_data + | |
1038 | sizeof(struct mpa_v2_conn_params), pdata, plen); | |
1039 | } else | |
1040 | if (plen) | |
1041 | memcpy(mpa->private_data, pdata, plen); | |
cfdda9d7 SW |
1042 | |
1043 | /* | |
1044 | * Reference the mpa skb. This ensures the data area | |
1045 | * will remain in memory until the hw acks the tx. | |
1046 | * Function fw4_ack() will deref it. | |
1047 | */ | |
1048 | skb_get(skb); | |
1049 | t4_set_arp_err_handler(skb, NULL, arp_failure_discard); | |
1050 | ep->mpa_skb = skb; | |
a7db89eb | 1051 | __state_set(&ep->com, MPA_REP_SENT); |
9c88aa00 | 1052 | ep->snd_seq += mpalen; |
cfdda9d7 SW |
1053 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
1054 | } | |
1055 | ||
1056 | static int act_establish(struct c4iw_dev *dev, struct sk_buff *skb) | |
1057 | { | |
1058 | struct c4iw_ep *ep; | |
1059 | struct cpl_act_establish *req = cplhdr(skb); | |
1060 | unsigned int tid = GET_TID(req); | |
6c53e938 | 1061 | unsigned int atid = TID_TID_G(ntohl(req->tos_atid)); |
cfdda9d7 SW |
1062 | struct tid_info *t = dev->rdev.lldi.tids; |
1063 | ||
1064 | ep = lookup_atid(t, atid); | |
1065 | ||
1066 | PDBG("%s ep %p tid %u snd_isn %u rcv_isn %u\n", __func__, ep, tid, | |
1067 | be32_to_cpu(req->snd_isn), be32_to_cpu(req->rcv_isn)); | |
1068 | ||
a7db89eb | 1069 | mutex_lock(&ep->com.mutex); |
cfdda9d7 SW |
1070 | dst_confirm(ep->dst); |
1071 | ||
1072 | /* setup the hwtid for this connection */ | |
1073 | ep->hwtid = tid; | |
1074 | cxgb4_insert_tid(t, ep, tid); | |
793dad94 | 1075 | insert_handle(dev, &dev->hwtid_idr, ep, ep->hwtid); |
cfdda9d7 SW |
1076 | |
1077 | ep->snd_seq = be32_to_cpu(req->snd_isn); | |
1078 | ep->rcv_seq = be32_to_cpu(req->rcv_isn); | |
1079 | ||
1080 | set_emss(ep, ntohs(req->tcp_opt)); | |
1081 | ||
1082 | /* dealloc the atid */ | |
793dad94 | 1083 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, atid); |
cfdda9d7 | 1084 | cxgb4_free_atid(t, atid); |
793dad94 | 1085 | set_bit(ACT_ESTAB, &ep->com.history); |
cfdda9d7 SW |
1086 | |
1087 | /* start MPA negotiation */ | |
1088 | send_flowc(ep, NULL); | |
d2fe99e8 KS |
1089 | if (ep->retry_with_mpa_v1) |
1090 | send_mpa_req(ep, skb, 1); | |
1091 | else | |
1092 | send_mpa_req(ep, skb, mpa_rev); | |
a7db89eb | 1093 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
1094 | return 0; |
1095 | } | |
1096 | ||
be13b2df | 1097 | static void close_complete_upcall(struct c4iw_ep *ep, int status) |
cfdda9d7 SW |
1098 | { |
1099 | struct iw_cm_event event; | |
1100 | ||
1101 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1102 | memset(&event, 0, sizeof(event)); | |
1103 | event.event = IW_CM_EVENT_CLOSE; | |
be13b2df | 1104 | event.status = status; |
cfdda9d7 SW |
1105 | if (ep->com.cm_id) { |
1106 | PDBG("close complete delivered ep %p cm_id %p tid %u\n", | |
1107 | ep, ep->com.cm_id, ep->hwtid); | |
1108 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
1109 | ep->com.cm_id->rem_ref(ep->com.cm_id); | |
1110 | ep->com.cm_id = NULL; | |
793dad94 | 1111 | set_bit(CLOSE_UPCALL, &ep->com.history); |
cfdda9d7 SW |
1112 | } |
1113 | } | |
1114 | ||
1115 | static int abort_connection(struct c4iw_ep *ep, struct sk_buff *skb, gfp_t gfp) | |
1116 | { | |
1117 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
cc18b939 | 1118 | __state_set(&ep->com, ABORTING); |
793dad94 | 1119 | set_bit(ABORT_CONN, &ep->com.history); |
cfdda9d7 SW |
1120 | return send_abort(ep, skb, gfp); |
1121 | } | |
1122 | ||
1123 | static void peer_close_upcall(struct c4iw_ep *ep) | |
1124 | { | |
1125 | struct iw_cm_event event; | |
1126 | ||
1127 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1128 | memset(&event, 0, sizeof(event)); | |
1129 | event.event = IW_CM_EVENT_DISCONNECT; | |
1130 | if (ep->com.cm_id) { | |
1131 | PDBG("peer close delivered ep %p cm_id %p tid %u\n", | |
1132 | ep, ep->com.cm_id, ep->hwtid); | |
1133 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
793dad94 | 1134 | set_bit(DISCONN_UPCALL, &ep->com.history); |
cfdda9d7 SW |
1135 | } |
1136 | } | |
1137 | ||
1138 | static void peer_abort_upcall(struct c4iw_ep *ep) | |
1139 | { | |
1140 | struct iw_cm_event event; | |
1141 | ||
1142 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1143 | memset(&event, 0, sizeof(event)); | |
1144 | event.event = IW_CM_EVENT_CLOSE; | |
1145 | event.status = -ECONNRESET; | |
1146 | if (ep->com.cm_id) { | |
1147 | PDBG("abort delivered ep %p cm_id %p tid %u\n", ep, | |
1148 | ep->com.cm_id, ep->hwtid); | |
1149 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
1150 | ep->com.cm_id->rem_ref(ep->com.cm_id); | |
1151 | ep->com.cm_id = NULL; | |
793dad94 | 1152 | set_bit(ABORT_UPCALL, &ep->com.history); |
cfdda9d7 SW |
1153 | } |
1154 | } | |
1155 | ||
1156 | static void connect_reply_upcall(struct c4iw_ep *ep, int status) | |
1157 | { | |
1158 | struct iw_cm_event event; | |
1159 | ||
1160 | PDBG("%s ep %p tid %u status %d\n", __func__, ep, ep->hwtid, status); | |
1161 | memset(&event, 0, sizeof(event)); | |
1162 | event.event = IW_CM_EVENT_CONNECT_REPLY; | |
1163 | event.status = status; | |
24d44a39 SW |
1164 | memcpy(&event.local_addr, &ep->com.local_addr, |
1165 | sizeof(ep->com.local_addr)); | |
1166 | memcpy(&event.remote_addr, &ep->com.remote_addr, | |
1167 | sizeof(ep->com.remote_addr)); | |
cfdda9d7 SW |
1168 | |
1169 | if ((status == 0) || (status == -ECONNREFUSED)) { | |
d2fe99e8 KS |
1170 | if (!ep->tried_with_mpa_v1) { |
1171 | /* this means MPA_v2 is used */ | |
1172 | event.private_data_len = ep->plen - | |
1173 | sizeof(struct mpa_v2_conn_params); | |
1174 | event.private_data = ep->mpa_pkt + | |
1175 | sizeof(struct mpa_message) + | |
1176 | sizeof(struct mpa_v2_conn_params); | |
1177 | } else { | |
1178 | /* this means MPA_v1 is used */ | |
1179 | event.private_data_len = ep->plen; | |
1180 | event.private_data = ep->mpa_pkt + | |
1181 | sizeof(struct mpa_message); | |
1182 | } | |
cfdda9d7 | 1183 | } |
85963e4c RD |
1184 | |
1185 | PDBG("%s ep %p tid %u status %d\n", __func__, ep, | |
1186 | ep->hwtid, status); | |
793dad94 | 1187 | set_bit(CONN_RPL_UPCALL, &ep->com.history); |
85963e4c RD |
1188 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); |
1189 | ||
cfdda9d7 SW |
1190 | if (status < 0) { |
1191 | ep->com.cm_id->rem_ref(ep->com.cm_id); | |
1192 | ep->com.cm_id = NULL; | |
cfdda9d7 SW |
1193 | } |
1194 | } | |
1195 | ||
be13b2df | 1196 | static int connect_request_upcall(struct c4iw_ep *ep) |
cfdda9d7 SW |
1197 | { |
1198 | struct iw_cm_event event; | |
be13b2df | 1199 | int ret; |
cfdda9d7 SW |
1200 | |
1201 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1202 | memset(&event, 0, sizeof(event)); | |
1203 | event.event = IW_CM_EVENT_CONNECT_REQUEST; | |
24d44a39 SW |
1204 | memcpy(&event.local_addr, &ep->com.local_addr, |
1205 | sizeof(ep->com.local_addr)); | |
1206 | memcpy(&event.remote_addr, &ep->com.remote_addr, | |
1207 | sizeof(ep->com.remote_addr)); | |
cfdda9d7 | 1208 | event.provider_data = ep; |
d2fe99e8 KS |
1209 | if (!ep->tried_with_mpa_v1) { |
1210 | /* this means MPA_v2 is used */ | |
1211 | event.ord = ep->ord; | |
1212 | event.ird = ep->ird; | |
1213 | event.private_data_len = ep->plen - | |
1214 | sizeof(struct mpa_v2_conn_params); | |
1215 | event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) + | |
1216 | sizeof(struct mpa_v2_conn_params); | |
1217 | } else { | |
1218 | /* this means MPA_v1 is used. Send max supported */ | |
4c2c5763 HS |
1219 | event.ord = cur_max_read_depth(ep->com.dev); |
1220 | event.ird = cur_max_read_depth(ep->com.dev); | |
d2fe99e8 KS |
1221 | event.private_data_len = ep->plen; |
1222 | event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); | |
1223 | } | |
be13b2df SW |
1224 | c4iw_get_ep(&ep->com); |
1225 | ret = ep->parent_ep->com.cm_id->event_handler(ep->parent_ep->com.cm_id, | |
1226 | &event); | |
1227 | if (ret) | |
1228 | c4iw_put_ep(&ep->com); | |
793dad94 | 1229 | set_bit(CONNREQ_UPCALL, &ep->com.history); |
cfdda9d7 | 1230 | c4iw_put_ep(&ep->parent_ep->com); |
be13b2df | 1231 | return ret; |
cfdda9d7 SW |
1232 | } |
1233 | ||
1234 | static void established_upcall(struct c4iw_ep *ep) | |
1235 | { | |
1236 | struct iw_cm_event event; | |
1237 | ||
1238 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1239 | memset(&event, 0, sizeof(event)); | |
1240 | event.event = IW_CM_EVENT_ESTABLISHED; | |
d2fe99e8 KS |
1241 | event.ird = ep->ird; |
1242 | event.ord = ep->ord; | |
cfdda9d7 SW |
1243 | if (ep->com.cm_id) { |
1244 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1245 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
793dad94 | 1246 | set_bit(ESTAB_UPCALL, &ep->com.history); |
cfdda9d7 SW |
1247 | } |
1248 | } | |
1249 | ||
1250 | static int update_rx_credits(struct c4iw_ep *ep, u32 credits) | |
1251 | { | |
1252 | struct cpl_rx_data_ack *req; | |
1253 | struct sk_buff *skb; | |
1254 | int wrlen = roundup(sizeof *req, 16); | |
1255 | ||
1256 | PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits); | |
1257 | skb = get_skb(NULL, wrlen, GFP_KERNEL); | |
1258 | if (!skb) { | |
1259 | printk(KERN_ERR MOD "update_rx_credits - cannot alloc skb!\n"); | |
1260 | return 0; | |
1261 | } | |
1262 | ||
b408ff28 HS |
1263 | /* |
1264 | * If we couldn't specify the entire rcv window at connection setup | |
1265 | * due to the limit in the number of bits in the RCV_BUFSIZ field, | |
1266 | * then add the overage in to the credits returned. | |
1267 | */ | |
d7990b0c AB |
1268 | if (ep->rcv_win > RCV_BUFSIZ_M * 1024) |
1269 | credits += ep->rcv_win - RCV_BUFSIZ_M * 1024; | |
b408ff28 | 1270 | |
cfdda9d7 SW |
1271 | req = (struct cpl_rx_data_ack *) skb_put(skb, wrlen); |
1272 | memset(req, 0, wrlen); | |
1273 | INIT_TP_WR(req, ep->hwtid); | |
1274 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_RX_DATA_ACK, | |
1275 | ep->hwtid)); | |
d7990b0c | 1276 | req->credit_dack = cpu_to_be32(credits | RX_FORCE_ACK_F | |
cf7fe64a HS |
1277 | RX_DACK_CHANGE_F | |
1278 | RX_DACK_MODE_V(dack_mode)); | |
d4f1a5c6 | 1279 | set_wr_txq(skb, CPL_PRIORITY_ACK, ep->ctrlq_idx); |
cfdda9d7 SW |
1280 | c4iw_ofld_send(&ep->com.dev->rdev, skb); |
1281 | return credits; | |
1282 | } | |
1283 | ||
4c2c5763 HS |
1284 | #define RELAXED_IRD_NEGOTIATION 1 |
1285 | ||
cc18b939 | 1286 | static int process_mpa_reply(struct c4iw_ep *ep, struct sk_buff *skb) |
cfdda9d7 SW |
1287 | { |
1288 | struct mpa_message *mpa; | |
d2fe99e8 | 1289 | struct mpa_v2_conn_params *mpa_v2_params; |
cfdda9d7 | 1290 | u16 plen; |
d2fe99e8 KS |
1291 | u16 resp_ird, resp_ord; |
1292 | u8 rtr_mismatch = 0, insuff_ird = 0; | |
cfdda9d7 SW |
1293 | struct c4iw_qp_attributes attrs; |
1294 | enum c4iw_qp_attr_mask mask; | |
1295 | int err; | |
cc18b939 | 1296 | int disconnect = 0; |
cfdda9d7 SW |
1297 | |
1298 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1299 | ||
1300 | /* | |
b33bd0cb SW |
1301 | * Stop mpa timer. If it expired, then |
1302 | * we ignore the MPA reply. process_timeout() | |
1303 | * will abort the connection. | |
cfdda9d7 | 1304 | */ |
b33bd0cb | 1305 | if (stop_ep_timer(ep)) |
cc18b939 | 1306 | return 0; |
cfdda9d7 SW |
1307 | |
1308 | /* | |
1309 | * If we get more than the supported amount of private data | |
1310 | * then we must fail this connection. | |
1311 | */ | |
1312 | if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) { | |
1313 | err = -EINVAL; | |
1314 | goto err; | |
1315 | } | |
1316 | ||
1317 | /* | |
1318 | * copy the new data into our accumulation buffer. | |
1319 | */ | |
1320 | skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]), | |
1321 | skb->len); | |
1322 | ep->mpa_pkt_len += skb->len; | |
1323 | ||
1324 | /* | |
1325 | * if we don't even have the mpa message, then bail. | |
1326 | */ | |
1327 | if (ep->mpa_pkt_len < sizeof(*mpa)) | |
cc18b939 | 1328 | return 0; |
cfdda9d7 SW |
1329 | mpa = (struct mpa_message *) ep->mpa_pkt; |
1330 | ||
1331 | /* Validate MPA header. */ | |
d2fe99e8 KS |
1332 | if (mpa->revision > mpa_rev) { |
1333 | printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d," | |
1334 | " Received = %d\n", __func__, mpa_rev, mpa->revision); | |
cfdda9d7 SW |
1335 | err = -EPROTO; |
1336 | goto err; | |
1337 | } | |
1338 | if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) { | |
1339 | err = -EPROTO; | |
1340 | goto err; | |
1341 | } | |
1342 | ||
1343 | plen = ntohs(mpa->private_data_size); | |
1344 | ||
1345 | /* | |
1346 | * Fail if there's too much private data. | |
1347 | */ | |
1348 | if (plen > MPA_MAX_PRIVATE_DATA) { | |
1349 | err = -EPROTO; | |
1350 | goto err; | |
1351 | } | |
1352 | ||
1353 | /* | |
1354 | * If plen does not account for pkt size | |
1355 | */ | |
1356 | if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { | |
1357 | err = -EPROTO; | |
1358 | goto err; | |
1359 | } | |
1360 | ||
1361 | ep->plen = (u8) plen; | |
1362 | ||
1363 | /* | |
1364 | * If we don't have all the pdata yet, then bail. | |
1365 | * We'll continue process when more data arrives. | |
1366 | */ | |
1367 | if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) | |
cc18b939 | 1368 | return 0; |
cfdda9d7 SW |
1369 | |
1370 | if (mpa->flags & MPA_REJECT) { | |
1371 | err = -ECONNREFUSED; | |
1372 | goto err; | |
1373 | } | |
1374 | ||
1375 | /* | |
1376 | * If we get here we have accumulated the entire mpa | |
1377 | * start reply message including private data. And | |
1378 | * the MPA header is valid. | |
1379 | */ | |
c529fb50 | 1380 | __state_set(&ep->com, FPDU_MODE); |
cfdda9d7 SW |
1381 | ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; |
1382 | ep->mpa_attr.recv_marker_enabled = markers_enabled; | |
1383 | ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; | |
d2fe99e8 KS |
1384 | ep->mpa_attr.version = mpa->revision; |
1385 | ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; | |
1386 | ||
1387 | if (mpa->revision == 2) { | |
1388 | ep->mpa_attr.enhanced_rdma_conn = | |
1389 | mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; | |
1390 | if (ep->mpa_attr.enhanced_rdma_conn) { | |
1391 | mpa_v2_params = (struct mpa_v2_conn_params *) | |
1392 | (ep->mpa_pkt + sizeof(*mpa)); | |
1393 | resp_ird = ntohs(mpa_v2_params->ird) & | |
1394 | MPA_V2_IRD_ORD_MASK; | |
1395 | resp_ord = ntohs(mpa_v2_params->ord) & | |
1396 | MPA_V2_IRD_ORD_MASK; | |
4c2c5763 HS |
1397 | PDBG("%s responder ird %u ord %u ep ird %u ord %u\n", |
1398 | __func__, resp_ird, resp_ord, ep->ird, ep->ord); | |
d2fe99e8 KS |
1399 | |
1400 | /* | |
1401 | * This is a double-check. Ideally, below checks are | |
1402 | * not required since ird/ord stuff has been taken | |
1403 | * care of in c4iw_accept_cr | |
1404 | */ | |
4c2c5763 HS |
1405 | if (ep->ird < resp_ord) { |
1406 | if (RELAXED_IRD_NEGOTIATION && resp_ord <= | |
1407 | ep->com.dev->rdev.lldi.max_ordird_qp) | |
1408 | ep->ird = resp_ord; | |
1409 | else | |
1410 | insuff_ird = 1; | |
1411 | } else if (ep->ird > resp_ord) { | |
1412 | ep->ird = resp_ord; | |
1413 | } | |
1414 | if (ep->ord > resp_ird) { | |
1415 | if (RELAXED_IRD_NEGOTIATION) | |
1416 | ep->ord = resp_ird; | |
1417 | else | |
1418 | insuff_ird = 1; | |
1419 | } | |
1420 | if (insuff_ird) { | |
d2fe99e8 KS |
1421 | err = -ENOMEM; |
1422 | ep->ird = resp_ord; | |
1423 | ep->ord = resp_ird; | |
d2fe99e8 KS |
1424 | } |
1425 | ||
1426 | if (ntohs(mpa_v2_params->ird) & | |
1427 | MPA_V2_PEER2PEER_MODEL) { | |
1428 | if (ntohs(mpa_v2_params->ord) & | |
1429 | MPA_V2_RDMA_WRITE_RTR) | |
1430 | ep->mpa_attr.p2p_type = | |
1431 | FW_RI_INIT_P2PTYPE_RDMA_WRITE; | |
1432 | else if (ntohs(mpa_v2_params->ord) & | |
1433 | MPA_V2_RDMA_READ_RTR) | |
1434 | ep->mpa_attr.p2p_type = | |
1435 | FW_RI_INIT_P2PTYPE_READ_REQ; | |
1436 | } | |
1437 | } | |
1438 | } else if (mpa->revision == 1) | |
1439 | if (peer2peer) | |
1440 | ep->mpa_attr.p2p_type = p2p_type; | |
1441 | ||
cfdda9d7 | 1442 | PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " |
d2fe99e8 KS |
1443 | "xmit_marker_enabled=%d, version=%d p2p_type=%d local-p2p_type = " |
1444 | "%d\n", __func__, ep->mpa_attr.crc_enabled, | |
1445 | ep->mpa_attr.recv_marker_enabled, | |
1446 | ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, | |
1447 | ep->mpa_attr.p2p_type, p2p_type); | |
1448 | ||
1449 | /* | |
1450 | * If responder's RTR does not match with that of initiator, assign | |
1451 | * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not | |
1452 | * generated when moving QP to RTS state. | |
1453 | * A TERM message will be sent after QP has moved to RTS state | |
1454 | */ | |
91018f86 | 1455 | if ((ep->mpa_attr.version == 2) && peer2peer && |
d2fe99e8 KS |
1456 | (ep->mpa_attr.p2p_type != p2p_type)) { |
1457 | ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; | |
1458 | rtr_mismatch = 1; | |
1459 | } | |
cfdda9d7 SW |
1460 | |
1461 | attrs.mpa_attr = ep->mpa_attr; | |
1462 | attrs.max_ird = ep->ird; | |
1463 | attrs.max_ord = ep->ord; | |
1464 | attrs.llp_stream_handle = ep; | |
1465 | attrs.next_state = C4IW_QP_STATE_RTS; | |
1466 | ||
1467 | mask = C4IW_QP_ATTR_NEXT_STATE | | |
1468 | C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR | | |
1469 | C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD; | |
1470 | ||
1471 | /* bind QP and TID with INIT_WR */ | |
1472 | err = c4iw_modify_qp(ep->com.qp->rhp, | |
1473 | ep->com.qp, mask, &attrs, 1); | |
1474 | if (err) | |
1475 | goto err; | |
d2fe99e8 KS |
1476 | |
1477 | /* | |
1478 | * If responder's RTR requirement did not match with what initiator | |
1479 | * supports, generate TERM message | |
1480 | */ | |
1481 | if (rtr_mismatch) { | |
1482 | printk(KERN_ERR "%s: RTR mismatch, sending TERM\n", __func__); | |
1483 | attrs.layer_etype = LAYER_MPA | DDP_LLP; | |
1484 | attrs.ecode = MPA_NOMATCH_RTR; | |
1485 | attrs.next_state = C4IW_QP_STATE_TERMINATE; | |
cc18b939 | 1486 | attrs.send_term = 1; |
d2fe99e8 | 1487 | err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, |
cc18b939 | 1488 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); |
d2fe99e8 | 1489 | err = -ENOMEM; |
cc18b939 | 1490 | disconnect = 1; |
d2fe99e8 KS |
1491 | goto out; |
1492 | } | |
1493 | ||
1494 | /* | |
1495 | * Generate TERM if initiator IRD is not sufficient for responder | |
1496 | * provided ORD. Currently, we do the same behaviour even when | |
1497 | * responder provided IRD is also not sufficient as regards to | |
1498 | * initiator ORD. | |
1499 | */ | |
1500 | if (insuff_ird) { | |
1501 | printk(KERN_ERR "%s: Insufficient IRD, sending TERM\n", | |
1502 | __func__); | |
1503 | attrs.layer_etype = LAYER_MPA | DDP_LLP; | |
1504 | attrs.ecode = MPA_INSUFF_IRD; | |
1505 | attrs.next_state = C4IW_QP_STATE_TERMINATE; | |
cc18b939 | 1506 | attrs.send_term = 1; |
d2fe99e8 | 1507 | err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, |
cc18b939 | 1508 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); |
d2fe99e8 | 1509 | err = -ENOMEM; |
cc18b939 | 1510 | disconnect = 1; |
d2fe99e8 KS |
1511 | goto out; |
1512 | } | |
cfdda9d7 SW |
1513 | goto out; |
1514 | err: | |
c529fb50 | 1515 | __state_set(&ep->com, ABORTING); |
b21ef16a | 1516 | send_abort(ep, skb, GFP_KERNEL); |
cfdda9d7 SW |
1517 | out: |
1518 | connect_reply_upcall(ep, err); | |
cc18b939 | 1519 | return disconnect; |
cfdda9d7 SW |
1520 | } |
1521 | ||
1522 | static void process_mpa_request(struct c4iw_ep *ep, struct sk_buff *skb) | |
1523 | { | |
1524 | struct mpa_message *mpa; | |
d2fe99e8 | 1525 | struct mpa_v2_conn_params *mpa_v2_params; |
cfdda9d7 SW |
1526 | u16 plen; |
1527 | ||
1528 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1529 | ||
cfdda9d7 SW |
1530 | /* |
1531 | * If we get more than the supported amount of private data | |
1532 | * then we must fail this connection. | |
1533 | */ | |
1534 | if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) { | |
b33bd0cb | 1535 | (void)stop_ep_timer(ep); |
cfdda9d7 SW |
1536 | abort_connection(ep, skb, GFP_KERNEL); |
1537 | return; | |
1538 | } | |
1539 | ||
1540 | PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__); | |
1541 | ||
1542 | /* | |
1543 | * Copy the new data into our accumulation buffer. | |
1544 | */ | |
1545 | skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]), | |
1546 | skb->len); | |
1547 | ep->mpa_pkt_len += skb->len; | |
1548 | ||
1549 | /* | |
1550 | * If we don't even have the mpa message, then bail. | |
1551 | * We'll continue process when more data arrives. | |
1552 | */ | |
1553 | if (ep->mpa_pkt_len < sizeof(*mpa)) | |
1554 | return; | |
1555 | ||
1556 | PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__); | |
cfdda9d7 SW |
1557 | mpa = (struct mpa_message *) ep->mpa_pkt; |
1558 | ||
1559 | /* | |
1560 | * Validate MPA Header. | |
1561 | */ | |
d2fe99e8 KS |
1562 | if (mpa->revision > mpa_rev) { |
1563 | printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d," | |
1564 | " Received = %d\n", __func__, mpa_rev, mpa->revision); | |
b33bd0cb | 1565 | (void)stop_ep_timer(ep); |
cfdda9d7 SW |
1566 | abort_connection(ep, skb, GFP_KERNEL); |
1567 | return; | |
1568 | } | |
1569 | ||
1570 | if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) { | |
b33bd0cb | 1571 | (void)stop_ep_timer(ep); |
cfdda9d7 SW |
1572 | abort_connection(ep, skb, GFP_KERNEL); |
1573 | return; | |
1574 | } | |
1575 | ||
1576 | plen = ntohs(mpa->private_data_size); | |
1577 | ||
1578 | /* | |
1579 | * Fail if there's too much private data. | |
1580 | */ | |
1581 | if (plen > MPA_MAX_PRIVATE_DATA) { | |
b33bd0cb | 1582 | (void)stop_ep_timer(ep); |
cfdda9d7 SW |
1583 | abort_connection(ep, skb, GFP_KERNEL); |
1584 | return; | |
1585 | } | |
1586 | ||
1587 | /* | |
1588 | * If plen does not account for pkt size | |
1589 | */ | |
1590 | if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { | |
b33bd0cb | 1591 | (void)stop_ep_timer(ep); |
cfdda9d7 SW |
1592 | abort_connection(ep, skb, GFP_KERNEL); |
1593 | return; | |
1594 | } | |
1595 | ep->plen = (u8) plen; | |
1596 | ||
1597 | /* | |
1598 | * If we don't have all the pdata yet, then bail. | |
1599 | */ | |
1600 | if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) | |
1601 | return; | |
1602 | ||
1603 | /* | |
1604 | * If we get here we have accumulated the entire mpa | |
1605 | * start reply message including private data. | |
1606 | */ | |
1607 | ep->mpa_attr.initiator = 0; | |
1608 | ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; | |
1609 | ep->mpa_attr.recv_marker_enabled = markers_enabled; | |
1610 | ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; | |
d2fe99e8 KS |
1611 | ep->mpa_attr.version = mpa->revision; |
1612 | if (mpa->revision == 1) | |
1613 | ep->tried_with_mpa_v1 = 1; | |
1614 | ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; | |
1615 | ||
1616 | if (mpa->revision == 2) { | |
1617 | ep->mpa_attr.enhanced_rdma_conn = | |
1618 | mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; | |
1619 | if (ep->mpa_attr.enhanced_rdma_conn) { | |
1620 | mpa_v2_params = (struct mpa_v2_conn_params *) | |
1621 | (ep->mpa_pkt + sizeof(*mpa)); | |
1622 | ep->ird = ntohs(mpa_v2_params->ird) & | |
1623 | MPA_V2_IRD_ORD_MASK; | |
1624 | ep->ord = ntohs(mpa_v2_params->ord) & | |
1625 | MPA_V2_IRD_ORD_MASK; | |
4c2c5763 HS |
1626 | PDBG("%s initiator ird %u ord %u\n", __func__, ep->ird, |
1627 | ep->ord); | |
d2fe99e8 KS |
1628 | if (ntohs(mpa_v2_params->ird) & MPA_V2_PEER2PEER_MODEL) |
1629 | if (peer2peer) { | |
1630 | if (ntohs(mpa_v2_params->ord) & | |
1631 | MPA_V2_RDMA_WRITE_RTR) | |
1632 | ep->mpa_attr.p2p_type = | |
1633 | FW_RI_INIT_P2PTYPE_RDMA_WRITE; | |
1634 | else if (ntohs(mpa_v2_params->ord) & | |
1635 | MPA_V2_RDMA_READ_RTR) | |
1636 | ep->mpa_attr.p2p_type = | |
1637 | FW_RI_INIT_P2PTYPE_READ_REQ; | |
1638 | } | |
1639 | } | |
1640 | } else if (mpa->revision == 1) | |
1641 | if (peer2peer) | |
1642 | ep->mpa_attr.p2p_type = p2p_type; | |
1643 | ||
cfdda9d7 SW |
1644 | PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " |
1645 | "xmit_marker_enabled=%d, version=%d p2p_type=%d\n", __func__, | |
1646 | ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, | |
1647 | ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, | |
1648 | ep->mpa_attr.p2p_type); | |
1649 | ||
b33bd0cb SW |
1650 | /* |
1651 | * If the endpoint timer already expired, then we ignore | |
1652 | * the start request. process_timeout() will abort | |
1653 | * the connection. | |
1654 | */ | |
1655 | if (!stop_ep_timer(ep)) { | |
1656 | __state_set(&ep->com, MPA_REQ_RCVD); | |
1657 | ||
1658 | /* drive upcall */ | |
10be6b48 HS |
1659 | mutex_lock_nested(&ep->parent_ep->com.mutex, |
1660 | SINGLE_DEPTH_NESTING); | |
b33bd0cb SW |
1661 | if (ep->parent_ep->com.state != DEAD) { |
1662 | if (connect_request_upcall(ep)) | |
1663 | abort_connection(ep, skb, GFP_KERNEL); | |
1664 | } else { | |
be13b2df | 1665 | abort_connection(ep, skb, GFP_KERNEL); |
b33bd0cb SW |
1666 | } |
1667 | mutex_unlock(&ep->parent_ep->com.mutex); | |
be13b2df | 1668 | } |
cfdda9d7 SW |
1669 | return; |
1670 | } | |
1671 | ||
1672 | static int rx_data(struct c4iw_dev *dev, struct sk_buff *skb) | |
1673 | { | |
1674 | struct c4iw_ep *ep; | |
1675 | struct cpl_rx_data *hdr = cplhdr(skb); | |
1676 | unsigned int dlen = ntohs(hdr->len); | |
1677 | unsigned int tid = GET_TID(hdr); | |
1678 | struct tid_info *t = dev->rdev.lldi.tids; | |
793dad94 | 1679 | __u8 status = hdr->status; |
cc18b939 | 1680 | int disconnect = 0; |
cfdda9d7 SW |
1681 | |
1682 | ep = lookup_tid(t, tid); | |
977116c6 SW |
1683 | if (!ep) |
1684 | return 0; | |
cfdda9d7 SW |
1685 | PDBG("%s ep %p tid %u dlen %u\n", __func__, ep, ep->hwtid, dlen); |
1686 | skb_pull(skb, sizeof(*hdr)); | |
1687 | skb_trim(skb, dlen); | |
c529fb50 | 1688 | mutex_lock(&ep->com.mutex); |
cfdda9d7 | 1689 | |
cfdda9d7 SW |
1690 | /* update RX credits */ |
1691 | update_rx_credits(ep, dlen); | |
1692 | ||
c529fb50 | 1693 | switch (ep->com.state) { |
cfdda9d7 | 1694 | case MPA_REQ_SENT: |
55abf8df | 1695 | ep->rcv_seq += dlen; |
cc18b939 | 1696 | disconnect = process_mpa_reply(ep, skb); |
cfdda9d7 SW |
1697 | break; |
1698 | case MPA_REQ_WAIT: | |
55abf8df | 1699 | ep->rcv_seq += dlen; |
cfdda9d7 SW |
1700 | process_mpa_request(ep, skb); |
1701 | break; | |
1557967b VP |
1702 | case FPDU_MODE: { |
1703 | struct c4iw_qp_attributes attrs; | |
1704 | BUG_ON(!ep->com.qp); | |
e8e5b927 | 1705 | if (status) |
1557967b | 1706 | pr_err("%s Unexpected streaming data." \ |
04236df2 VP |
1707 | " qpid %u ep %p state %d tid %u status %d\n", |
1708 | __func__, ep->com.qp->wq.sq.qid, ep, | |
c529fb50 | 1709 | ep->com.state, ep->hwtid, status); |
97d7ec0c | 1710 | attrs.next_state = C4IW_QP_STATE_TERMINATE; |
1557967b | 1711 | c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, |
cc18b939 SW |
1712 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); |
1713 | disconnect = 1; | |
cfdda9d7 SW |
1714 | break; |
1715 | } | |
1557967b VP |
1716 | default: |
1717 | break; | |
1718 | } | |
c529fb50 | 1719 | mutex_unlock(&ep->com.mutex); |
cc18b939 SW |
1720 | if (disconnect) |
1721 | c4iw_ep_disconnect(ep, 0, GFP_KERNEL); | |
cfdda9d7 SW |
1722 | return 0; |
1723 | } | |
1724 | ||
1725 | static int abort_rpl(struct c4iw_dev *dev, struct sk_buff *skb) | |
1726 | { | |
1727 | struct c4iw_ep *ep; | |
1728 | struct cpl_abort_rpl_rss *rpl = cplhdr(skb); | |
cfdda9d7 SW |
1729 | int release = 0; |
1730 | unsigned int tid = GET_TID(rpl); | |
1731 | struct tid_info *t = dev->rdev.lldi.tids; | |
1732 | ||
1733 | ep = lookup_tid(t, tid); | |
4984037b VP |
1734 | if (!ep) { |
1735 | printk(KERN_WARNING MOD "Abort rpl to freed endpoint\n"); | |
1736 | return 0; | |
1737 | } | |
92dd6c3d | 1738 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
2f5b48c3 | 1739 | mutex_lock(&ep->com.mutex); |
cfdda9d7 SW |
1740 | switch (ep->com.state) { |
1741 | case ABORTING: | |
91e9c071 | 1742 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); |
cfdda9d7 SW |
1743 | __state_set(&ep->com, DEAD); |
1744 | release = 1; | |
1745 | break; | |
1746 | default: | |
1747 | printk(KERN_ERR "%s ep %p state %d\n", | |
1748 | __func__, ep, ep->com.state); | |
1749 | break; | |
1750 | } | |
2f5b48c3 | 1751 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
1752 | |
1753 | if (release) | |
1754 | release_ep_resources(ep); | |
1755 | return 0; | |
1756 | } | |
1757 | ||
5be78ee9 VP |
1758 | static void send_fw_act_open_req(struct c4iw_ep *ep, unsigned int atid) |
1759 | { | |
1760 | struct sk_buff *skb; | |
1761 | struct fw_ofld_connection_wr *req; | |
1762 | unsigned int mtu_idx; | |
1763 | int wscale; | |
830662f6 | 1764 | struct sockaddr_in *sin; |
b408ff28 | 1765 | int win; |
5be78ee9 VP |
1766 | |
1767 | skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); | |
1768 | req = (struct fw_ofld_connection_wr *)__skb_put(skb, sizeof(*req)); | |
1769 | memset(req, 0, sizeof(*req)); | |
6c53e938 | 1770 | req->op_compl = htonl(WR_OP_V(FW_OFLD_CONNECTION_WR)); |
e2ac9628 | 1771 | req->len16_pkd = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*req), 16))); |
41b4f86c KS |
1772 | req->le.filter = cpu_to_be32(cxgb4_select_ntuple( |
1773 | ep->com.dev->rdev.lldi.ports[0], | |
5be78ee9 | 1774 | ep->l2t)); |
9eccfe10 | 1775 | sin = (struct sockaddr_in *)&ep->com.mapped_local_addr; |
830662f6 VP |
1776 | req->le.lport = sin->sin_port; |
1777 | req->le.u.ipv4.lip = sin->sin_addr.s_addr; | |
9eccfe10 | 1778 | sin = (struct sockaddr_in *)&ep->com.mapped_remote_addr; |
830662f6 VP |
1779 | req->le.pport = sin->sin_port; |
1780 | req->le.u.ipv4.pip = sin->sin_addr.s_addr; | |
5be78ee9 | 1781 | req->tcb.t_state_to_astid = |
77a80e23 HS |
1782 | htonl(FW_OFLD_CONNECTION_WR_T_STATE_V(TCP_SYN_SENT) | |
1783 | FW_OFLD_CONNECTION_WR_ASTID_V(atid)); | |
5be78ee9 | 1784 | req->tcb.cplrxdataack_cplpassacceptrpl = |
77a80e23 | 1785 | htons(FW_OFLD_CONNECTION_WR_CPLRXDATAACK_F); |
ef5d6355 | 1786 | req->tcb.tx_max = (__force __be32) jiffies; |
793dad94 | 1787 | req->tcb.rcv_adv = htons(1); |
92e7ae71 | 1788 | best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx, |
04524a47 H |
1789 | enable_tcp_timestamps, |
1790 | (AF_INET == ep->com.remote_addr.ss_family) ? 0 : 1); | |
5be78ee9 | 1791 | wscale = compute_wscale(rcv_win); |
b408ff28 HS |
1792 | |
1793 | /* | |
1794 | * Specify the largest window that will fit in opt0. The | |
1795 | * remainder will be specified in the rx_data_ack. | |
1796 | */ | |
1797 | win = ep->rcv_win >> 10; | |
d7990b0c AB |
1798 | if (win > RCV_BUFSIZ_M) |
1799 | win = RCV_BUFSIZ_M; | |
b408ff28 | 1800 | |
6c53e938 HS |
1801 | req->tcb.opt0 = (__force __be64) (TCAM_BYPASS_F | |
1802 | (nocong ? NO_CONG_F : 0) | | |
d7990b0c | 1803 | KEEP_ALIVE_F | |
6c53e938 | 1804 | DELACK_F | |
d7990b0c AB |
1805 | WND_SCALE_V(wscale) | |
1806 | MSS_IDX_V(mtu_idx) | | |
1807 | L2T_IDX_V(ep->l2t->idx) | | |
1808 | TX_CHAN_V(ep->tx_chan) | | |
1809 | SMAC_SEL_V(ep->smac_idx) | | |
6c53e938 | 1810 | DSCP_V(ep->tos) | |
d7990b0c AB |
1811 | ULP_MODE_V(ULP_MODE_TCPDDP) | |
1812 | RCV_BUFSIZ_V(win)); | |
6c53e938 HS |
1813 | req->tcb.opt2 = (__force __be32) (PACE_V(1) | |
1814 | TX_QUEUE_V(ep->com.dev->rdev.lldi.tx_modq[ep->tx_chan]) | | |
d7990b0c | 1815 | RX_CHANNEL_V(0) | |
6c53e938 | 1816 | CCTRL_ECN_V(enable_ecn) | |
d7990b0c | 1817 | RSS_QUEUE_VALID_F | RSS_QUEUE_V(ep->rss_qid)); |
5be78ee9 | 1818 | if (enable_tcp_timestamps) |
6c53e938 | 1819 | req->tcb.opt2 |= (__force __be32)TSTAMPS_EN_F; |
5be78ee9 | 1820 | if (enable_tcp_sack) |
6c53e938 | 1821 | req->tcb.opt2 |= (__force __be32)SACK_EN_F; |
5be78ee9 | 1822 | if (wscale && enable_tcp_window_scaling) |
d7990b0c AB |
1823 | req->tcb.opt2 |= (__force __be32)WND_SCALE_EN_F; |
1824 | req->tcb.opt0 = cpu_to_be64((__force u64)req->tcb.opt0); | |
1825 | req->tcb.opt2 = cpu_to_be32((__force u32)req->tcb.opt2); | |
793dad94 VP |
1826 | set_wr_txq(skb, CPL_PRIORITY_CONTROL, ep->ctrlq_idx); |
1827 | set_bit(ACT_OFLD_CONN, &ep->com.history); | |
5be78ee9 VP |
1828 | c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
1829 | } | |
1830 | ||
cfdda9d7 SW |
1831 | /* |
1832 | * Return whether a failed active open has allocated a TID | |
1833 | */ | |
1834 | static inline int act_open_has_tid(int status) | |
1835 | { | |
1836 | return status != CPL_ERR_TCAM_FULL && status != CPL_ERR_CONN_EXIST && | |
1837 | status != CPL_ERR_ARP_MISS; | |
1838 | } | |
1839 | ||
7a2cea2a SW |
1840 | /* Returns whether a CPL status conveys negative advice. |
1841 | */ | |
1842 | static int is_neg_adv(unsigned int status) | |
1843 | { | |
1844 | return status == CPL_ERR_RTX_NEG_ADVICE || | |
1845 | status == CPL_ERR_PERSIST_NEG_ADVICE || | |
1846 | status == CPL_ERR_KEEPALV_NEG_ADVICE; | |
1847 | } | |
1848 | ||
dd92b124 HS |
1849 | static char *neg_adv_str(unsigned int status) |
1850 | { | |
1851 | switch (status) { | |
1852 | case CPL_ERR_RTX_NEG_ADVICE: | |
1853 | return "Retransmit timeout"; | |
1854 | case CPL_ERR_PERSIST_NEG_ADVICE: | |
1855 | return "Persist timeout"; | |
1856 | case CPL_ERR_KEEPALV_NEG_ADVICE: | |
1857 | return "Keepalive timeout"; | |
1858 | default: | |
1859 | return "Unknown"; | |
1860 | } | |
1861 | } | |
1862 | ||
b408ff28 HS |
1863 | static void set_tcp_window(struct c4iw_ep *ep, struct port_info *pi) |
1864 | { | |
1865 | ep->snd_win = snd_win; | |
1866 | ep->rcv_win = rcv_win; | |
1867 | PDBG("%s snd_win %d rcv_win %d\n", __func__, ep->snd_win, ep->rcv_win); | |
1868 | } | |
1869 | ||
793dad94 VP |
1870 | #define ACT_OPEN_RETRY_COUNT 2 |
1871 | ||
830662f6 VP |
1872 | static int import_ep(struct c4iw_ep *ep, int iptype, __u8 *peer_ip, |
1873 | struct dst_entry *dst, struct c4iw_dev *cdev, | |
1874 | bool clear_mpa_v1) | |
1875 | { | |
1876 | struct neighbour *n; | |
1877 | int err, step; | |
1878 | struct net_device *pdev; | |
1879 | ||
1880 | n = dst_neigh_lookup(dst, peer_ip); | |
1881 | if (!n) | |
1882 | return -ENODEV; | |
1883 | ||
1884 | rcu_read_lock(); | |
1885 | err = -ENOMEM; | |
1886 | if (n->dev->flags & IFF_LOOPBACK) { | |
1887 | if (iptype == 4) | |
1888 | pdev = ip_dev_find(&init_net, *(__be32 *)peer_ip); | |
1889 | else if (IS_ENABLED(CONFIG_IPV6)) | |
1890 | for_each_netdev(&init_net, pdev) { | |
1891 | if (ipv6_chk_addr(&init_net, | |
1892 | (struct in6_addr *)peer_ip, | |
1893 | pdev, 1)) | |
1894 | break; | |
1895 | } | |
1896 | else | |
1897 | pdev = NULL; | |
1898 | ||
1899 | if (!pdev) { | |
1900 | err = -ENODEV; | |
1901 | goto out; | |
1902 | } | |
1903 | ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t, | |
1904 | n, pdev, 0); | |
1905 | if (!ep->l2t) | |
1906 | goto out; | |
1907 | ep->mtu = pdev->mtu; | |
1908 | ep->tx_chan = cxgb4_port_chan(pdev); | |
1909 | ep->smac_idx = (cxgb4_port_viid(pdev) & 0x7F) << 1; | |
1910 | step = cdev->rdev.lldi.ntxq / | |
1911 | cdev->rdev.lldi.nchan; | |
1912 | ep->txq_idx = cxgb4_port_idx(pdev) * step; | |
1913 | step = cdev->rdev.lldi.nrxq / | |
1914 | cdev->rdev.lldi.nchan; | |
1915 | ep->ctrlq_idx = cxgb4_port_idx(pdev); | |
1916 | ep->rss_qid = cdev->rdev.lldi.rxq_ids[ | |
1917 | cxgb4_port_idx(pdev) * step]; | |
b408ff28 | 1918 | set_tcp_window(ep, (struct port_info *)netdev_priv(pdev)); |
830662f6 VP |
1919 | dev_put(pdev); |
1920 | } else { | |
1921 | pdev = get_real_dev(n->dev); | |
1922 | ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t, | |
1923 | n, pdev, 0); | |
1924 | if (!ep->l2t) | |
1925 | goto out; | |
1926 | ep->mtu = dst_mtu(dst); | |
11b8e22d SW |
1927 | ep->tx_chan = cxgb4_port_chan(pdev); |
1928 | ep->smac_idx = (cxgb4_port_viid(pdev) & 0x7F) << 1; | |
830662f6 VP |
1929 | step = cdev->rdev.lldi.ntxq / |
1930 | cdev->rdev.lldi.nchan; | |
11b8e22d SW |
1931 | ep->txq_idx = cxgb4_port_idx(pdev) * step; |
1932 | ep->ctrlq_idx = cxgb4_port_idx(pdev); | |
830662f6 VP |
1933 | step = cdev->rdev.lldi.nrxq / |
1934 | cdev->rdev.lldi.nchan; | |
1935 | ep->rss_qid = cdev->rdev.lldi.rxq_ids[ | |
11b8e22d | 1936 | cxgb4_port_idx(pdev) * step]; |
b408ff28 | 1937 | set_tcp_window(ep, (struct port_info *)netdev_priv(pdev)); |
830662f6 VP |
1938 | |
1939 | if (clear_mpa_v1) { | |
1940 | ep->retry_with_mpa_v1 = 0; | |
1941 | ep->tried_with_mpa_v1 = 0; | |
1942 | } | |
1943 | } | |
1944 | err = 0; | |
1945 | out: | |
1946 | rcu_read_unlock(); | |
1947 | ||
1948 | neigh_release(n); | |
1949 | ||
1950 | return err; | |
1951 | } | |
1952 | ||
793dad94 VP |
1953 | static int c4iw_reconnect(struct c4iw_ep *ep) |
1954 | { | |
1955 | int err = 0; | |
24d44a39 SW |
1956 | struct sockaddr_in *laddr = (struct sockaddr_in *) |
1957 | &ep->com.cm_id->local_addr; | |
1958 | struct sockaddr_in *raddr = (struct sockaddr_in *) | |
1959 | &ep->com.cm_id->remote_addr; | |
830662f6 VP |
1960 | struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *) |
1961 | &ep->com.cm_id->local_addr; | |
1962 | struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *) | |
1963 | &ep->com.cm_id->remote_addr; | |
1964 | int iptype; | |
1965 | __u8 *ra; | |
793dad94 VP |
1966 | |
1967 | PDBG("%s qp %p cm_id %p\n", __func__, ep->com.qp, ep->com.cm_id); | |
1968 | init_timer(&ep->timer); | |
1969 | ||
1970 | /* | |
1971 | * Allocate an active TID to initiate a TCP connection. | |
1972 | */ | |
1973 | ep->atid = cxgb4_alloc_atid(ep->com.dev->rdev.lldi.tids, ep); | |
1974 | if (ep->atid == -1) { | |
1975 | pr_err("%s - cannot alloc atid.\n", __func__); | |
1976 | err = -ENOMEM; | |
1977 | goto fail2; | |
1978 | } | |
1979 | insert_handle(ep->com.dev, &ep->com.dev->atid_idr, ep, ep->atid); | |
1980 | ||
1981 | /* find a route */ | |
830662f6 VP |
1982 | if (ep->com.cm_id->local_addr.ss_family == AF_INET) { |
1983 | ep->dst = find_route(ep->com.dev, laddr->sin_addr.s_addr, | |
1984 | raddr->sin_addr.s_addr, laddr->sin_port, | |
1985 | raddr->sin_port, 0); | |
1986 | iptype = 4; | |
1987 | ra = (__u8 *)&raddr->sin_addr; | |
1988 | } else { | |
1989 | ep->dst = find_route6(ep->com.dev, laddr6->sin6_addr.s6_addr, | |
1990 | raddr6->sin6_addr.s6_addr, | |
1991 | laddr6->sin6_port, raddr6->sin6_port, 0, | |
1992 | raddr6->sin6_scope_id); | |
1993 | iptype = 6; | |
1994 | ra = (__u8 *)&raddr6->sin6_addr; | |
1995 | } | |
1996 | if (!ep->dst) { | |
793dad94 VP |
1997 | pr_err("%s - cannot find route.\n", __func__); |
1998 | err = -EHOSTUNREACH; | |
1999 | goto fail3; | |
2000 | } | |
830662f6 VP |
2001 | err = import_ep(ep, iptype, ra, ep->dst, ep->com.dev, false); |
2002 | if (err) { | |
793dad94 | 2003 | pr_err("%s - cannot alloc l2e.\n", __func__); |
793dad94 VP |
2004 | goto fail4; |
2005 | } | |
2006 | ||
2007 | PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n", | |
2008 | __func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid, | |
2009 | ep->l2t->idx); | |
2010 | ||
2011 | state_set(&ep->com, CONNECTING); | |
2012 | ep->tos = 0; | |
2013 | ||
2014 | /* send connect request to rnic */ | |
2015 | err = send_connect(ep); | |
2016 | if (!err) | |
2017 | goto out; | |
2018 | ||
2019 | cxgb4_l2t_release(ep->l2t); | |
2020 | fail4: | |
2021 | dst_release(ep->dst); | |
2022 | fail3: | |
2023 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid); | |
2024 | cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid); | |
2025 | fail2: | |
2026 | /* | |
2027 | * remember to send notification to upper layer. | |
2028 | * We are in here so the upper layer is not aware that this is | |
2029 | * re-connect attempt and so, upper layer is still waiting for | |
2030 | * response of 1st connect request. | |
2031 | */ | |
2032 | connect_reply_upcall(ep, -ECONNRESET); | |
2033 | c4iw_put_ep(&ep->com); | |
2034 | out: | |
2035 | return err; | |
2036 | } | |
2037 | ||
cfdda9d7 SW |
2038 | static int act_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb) |
2039 | { | |
2040 | struct c4iw_ep *ep; | |
2041 | struct cpl_act_open_rpl *rpl = cplhdr(skb); | |
6c53e938 HS |
2042 | unsigned int atid = TID_TID_G(AOPEN_ATID_G( |
2043 | ntohl(rpl->atid_status))); | |
cfdda9d7 | 2044 | struct tid_info *t = dev->rdev.lldi.tids; |
6c53e938 | 2045 | int status = AOPEN_STATUS_G(ntohl(rpl->atid_status)); |
830662f6 VP |
2046 | struct sockaddr_in *la; |
2047 | struct sockaddr_in *ra; | |
2048 | struct sockaddr_in6 *la6; | |
2049 | struct sockaddr_in6 *ra6; | |
cfdda9d7 SW |
2050 | |
2051 | ep = lookup_atid(t, atid); | |
9eccfe10 SW |
2052 | la = (struct sockaddr_in *)&ep->com.mapped_local_addr; |
2053 | ra = (struct sockaddr_in *)&ep->com.mapped_remote_addr; | |
2054 | la6 = (struct sockaddr_in6 *)&ep->com.mapped_local_addr; | |
2055 | ra6 = (struct sockaddr_in6 *)&ep->com.mapped_remote_addr; | |
cfdda9d7 SW |
2056 | |
2057 | PDBG("%s ep %p atid %u status %u errno %d\n", __func__, ep, atid, | |
2058 | status, status2errno(status)); | |
2059 | ||
7a2cea2a | 2060 | if (is_neg_adv(status)) { |
179d03bb H |
2061 | PDBG("%s Connection problems for atid %u status %u (%s)\n", |
2062 | __func__, atid, status, neg_adv_str(status)); | |
2063 | ep->stats.connect_neg_adv++; | |
2064 | mutex_lock(&dev->rdev.stats.lock); | |
2065 | dev->rdev.stats.neg_adv++; | |
2066 | mutex_unlock(&dev->rdev.stats.lock); | |
cfdda9d7 SW |
2067 | return 0; |
2068 | } | |
2069 | ||
793dad94 VP |
2070 | set_bit(ACT_OPEN_RPL, &ep->com.history); |
2071 | ||
d716a2a0 VP |
2072 | /* |
2073 | * Log interesting failures. | |
2074 | */ | |
2075 | switch (status) { | |
2076 | case CPL_ERR_CONN_RESET: | |
2077 | case CPL_ERR_CONN_TIMEDOUT: | |
2078 | break; | |
5be78ee9 | 2079 | case CPL_ERR_TCAM_FULL: |
830662f6 | 2080 | mutex_lock(&dev->rdev.stats.lock); |
3b174d94 | 2081 | dev->rdev.stats.tcam_full++; |
830662f6 VP |
2082 | mutex_unlock(&dev->rdev.stats.lock); |
2083 | if (ep->com.local_addr.ss_family == AF_INET && | |
2084 | dev->rdev.lldi.enable_fw_ofld_conn) { | |
793dad94 | 2085 | send_fw_act_open_req(ep, |
6c53e938 | 2086 | TID_TID_G(AOPEN_ATID_G( |
793dad94 VP |
2087 | ntohl(rpl->atid_status)))); |
2088 | return 0; | |
2089 | } | |
2090 | break; | |
2091 | case CPL_ERR_CONN_EXIST: | |
2092 | if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) { | |
2093 | set_bit(ACT_RETRY_INUSE, &ep->com.history); | |
2094 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, | |
2095 | atid); | |
2096 | cxgb4_free_atid(t, atid); | |
2097 | dst_release(ep->dst); | |
2098 | cxgb4_l2t_release(ep->l2t); | |
2099 | c4iw_reconnect(ep); | |
2100 | return 0; | |
2101 | } | |
5be78ee9 | 2102 | break; |
d716a2a0 | 2103 | default: |
830662f6 VP |
2104 | if (ep->com.local_addr.ss_family == AF_INET) { |
2105 | pr_info("Active open failure - atid %u status %u errno %d %pI4:%u->%pI4:%u\n", | |
2106 | atid, status, status2errno(status), | |
2107 | &la->sin_addr.s_addr, ntohs(la->sin_port), | |
2108 | &ra->sin_addr.s_addr, ntohs(ra->sin_port)); | |
2109 | } else { | |
2110 | pr_info("Active open failure - atid %u status %u errno %d %pI6:%u->%pI6:%u\n", | |
2111 | atid, status, status2errno(status), | |
2112 | la6->sin6_addr.s6_addr, ntohs(la6->sin6_port), | |
2113 | ra6->sin6_addr.s6_addr, ntohs(ra6->sin6_port)); | |
2114 | } | |
d716a2a0 VP |
2115 | break; |
2116 | } | |
2117 | ||
cfdda9d7 SW |
2118 | connect_reply_upcall(ep, status2errno(status)); |
2119 | state_set(&ep->com, DEAD); | |
2120 | ||
2121 | if (status && act_open_has_tid(status)) | |
2122 | cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, GET_TID(rpl)); | |
2123 | ||
793dad94 | 2124 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, atid); |
cfdda9d7 SW |
2125 | cxgb4_free_atid(t, atid); |
2126 | dst_release(ep->dst); | |
2127 | cxgb4_l2t_release(ep->l2t); | |
2128 | c4iw_put_ep(&ep->com); | |
2129 | ||
2130 | return 0; | |
2131 | } | |
2132 | ||
2133 | static int pass_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb) | |
2134 | { | |
2135 | struct cpl_pass_open_rpl *rpl = cplhdr(skb); | |
2136 | struct tid_info *t = dev->rdev.lldi.tids; | |
2137 | unsigned int stid = GET_TID(rpl); | |
2138 | struct c4iw_listen_ep *ep = lookup_stid(t, stid); | |
2139 | ||
2140 | if (!ep) { | |
1cab775c VP |
2141 | PDBG("%s stid %d lookup failure!\n", __func__, stid); |
2142 | goto out; | |
cfdda9d7 SW |
2143 | } |
2144 | PDBG("%s ep %p status %d error %d\n", __func__, ep, | |
2145 | rpl->status, status2errno(rpl->status)); | |
d9594d99 | 2146 | c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status)); |
cfdda9d7 | 2147 | |
1cab775c | 2148 | out: |
cfdda9d7 SW |
2149 | return 0; |
2150 | } | |
2151 | ||
cfdda9d7 SW |
2152 | static int close_listsrv_rpl(struct c4iw_dev *dev, struct sk_buff *skb) |
2153 | { | |
2154 | struct cpl_close_listsvr_rpl *rpl = cplhdr(skb); | |
2155 | struct tid_info *t = dev->rdev.lldi.tids; | |
2156 | unsigned int stid = GET_TID(rpl); | |
2157 | struct c4iw_listen_ep *ep = lookup_stid(t, stid); | |
2158 | ||
2159 | PDBG("%s ep %p\n", __func__, ep); | |
d9594d99 | 2160 | c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status)); |
cfdda9d7 SW |
2161 | return 0; |
2162 | } | |
2163 | ||
830662f6 | 2164 | static void accept_cr(struct c4iw_ep *ep, struct sk_buff *skb, |
cfdda9d7 SW |
2165 | struct cpl_pass_accept_req *req) |
2166 | { | |
2167 | struct cpl_pass_accept_rpl *rpl; | |
2168 | unsigned int mtu_idx; | |
2169 | u64 opt0; | |
2170 | u32 opt2; | |
2171 | int wscale; | |
92e7ae71 | 2172 | struct cpl_t5_pass_accept_rpl *rpl5 = NULL; |
b408ff28 | 2173 | int win; |
cfdda9d7 SW |
2174 | |
2175 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
2176 | BUG_ON(skb_cloned(skb)); | |
92e7ae71 | 2177 | |
cfdda9d7 | 2178 | skb_get(skb); |
92e7ae71 HS |
2179 | rpl = cplhdr(skb); |
2180 | if (is_t5(ep->com.dev->rdev.lldi.adapter_type)) { | |
2181 | skb_trim(skb, roundup(sizeof(*rpl5), 16)); | |
2182 | rpl5 = (void *)rpl; | |
2183 | INIT_TP_WR(rpl5, ep->hwtid); | |
2184 | } else { | |
2185 | skb_trim(skb, sizeof(*rpl)); | |
2186 | INIT_TP_WR(rpl, ep->hwtid); | |
2187 | } | |
2188 | OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL, | |
2189 | ep->hwtid)); | |
2190 | ||
2191 | best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx, | |
04524a47 H |
2192 | enable_tcp_timestamps && req->tcpopt.tstamp, |
2193 | (AF_INET == ep->com.remote_addr.ss_family) ? 0 : 1); | |
cfdda9d7 | 2194 | wscale = compute_wscale(rcv_win); |
b408ff28 HS |
2195 | |
2196 | /* | |
2197 | * Specify the largest window that will fit in opt0. The | |
2198 | * remainder will be specified in the rx_data_ack. | |
2199 | */ | |
2200 | win = ep->rcv_win >> 10; | |
d7990b0c AB |
2201 | if (win > RCV_BUFSIZ_M) |
2202 | win = RCV_BUFSIZ_M; | |
6c53e938 | 2203 | opt0 = (nocong ? NO_CONG_F : 0) | |
d7990b0c | 2204 | KEEP_ALIVE_F | |
6c53e938 | 2205 | DELACK_F | |
d7990b0c AB |
2206 | WND_SCALE_V(wscale) | |
2207 | MSS_IDX_V(mtu_idx) | | |
2208 | L2T_IDX_V(ep->l2t->idx) | | |
2209 | TX_CHAN_V(ep->tx_chan) | | |
2210 | SMAC_SEL_V(ep->smac_idx) | | |
6c53e938 | 2211 | DSCP_V(ep->tos >> 2) | |
d7990b0c AB |
2212 | ULP_MODE_V(ULP_MODE_TCPDDP) | |
2213 | RCV_BUFSIZ_V(win); | |
2214 | opt2 = RX_CHANNEL_V(0) | | |
2215 | RSS_QUEUE_VALID_F | RSS_QUEUE_V(ep->rss_qid); | |
cfdda9d7 SW |
2216 | |
2217 | if (enable_tcp_timestamps && req->tcpopt.tstamp) | |
6c53e938 | 2218 | opt2 |= TSTAMPS_EN_F; |
cfdda9d7 | 2219 | if (enable_tcp_sack && req->tcpopt.sack) |
6c53e938 | 2220 | opt2 |= SACK_EN_F; |
cfdda9d7 | 2221 | if (wscale && enable_tcp_window_scaling) |
d7990b0c | 2222 | opt2 |= WND_SCALE_EN_F; |
5be78ee9 VP |
2223 | if (enable_ecn) { |
2224 | const struct tcphdr *tcph; | |
2225 | u32 hlen = ntohl(req->hdr_len); | |
2226 | ||
cf7fe64a HS |
2227 | tcph = (const void *)(req + 1) + ETH_HDR_LEN_G(hlen) + |
2228 | IP_HDR_LEN_G(hlen); | |
5be78ee9 | 2229 | if (tcph->ece && tcph->cwr) |
6c53e938 | 2230 | opt2 |= CCTRL_ECN_V(1); |
5be78ee9 | 2231 | } |
92e5011a | 2232 | if (is_t5(ep->com.dev->rdev.lldi.adapter_type)) { |
92e7ae71 | 2233 | u32 isn = (prandom_u32() & ~7UL) - 1; |
d7990b0c | 2234 | opt2 |= T5_OPT_2_VALID_F; |
cf7fe64a | 2235 | opt2 |= CONG_CNTRL_V(CONG_ALG_TAHOE); |
0b741047 | 2236 | opt2 |= T5_ISS_F; |
92e7ae71 HS |
2237 | rpl5 = (void *)rpl; |
2238 | memset(&rpl5->iss, 0, roundup(sizeof(*rpl5)-sizeof(*rpl), 16)); | |
2239 | if (peer2peer) | |
2240 | isn += 4; | |
2241 | rpl5->iss = cpu_to_be32(isn); | |
2242 | PDBG("%s iss %u\n", __func__, be32_to_cpu(rpl5->iss)); | |
92e5011a | 2243 | } |
cfdda9d7 | 2244 | |
cfdda9d7 SW |
2245 | rpl->opt0 = cpu_to_be64(opt0); |
2246 | rpl->opt2 = cpu_to_be32(opt2); | |
d4f1a5c6 | 2247 | set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx); |
b38a0ad8 | 2248 | t4_set_arp_err_handler(skb, NULL, arp_failure_discard); |
cfdda9d7 SW |
2249 | c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
2250 | ||
2251 | return; | |
2252 | } | |
2253 | ||
830662f6 | 2254 | static void reject_cr(struct c4iw_dev *dev, u32 hwtid, struct sk_buff *skb) |
cfdda9d7 | 2255 | { |
830662f6 | 2256 | PDBG("%s c4iw_dev %p tid %u\n", __func__, dev, hwtid); |
cfdda9d7 SW |
2257 | BUG_ON(skb_cloned(skb)); |
2258 | skb_trim(skb, sizeof(struct cpl_tid_release)); | |
cfdda9d7 SW |
2259 | release_tid(&dev->rdev, hwtid, skb); |
2260 | return; | |
2261 | } | |
2262 | ||
830662f6 VP |
2263 | static void get_4tuple(struct cpl_pass_accept_req *req, int *iptype, |
2264 | __u8 *local_ip, __u8 *peer_ip, | |
cfdda9d7 SW |
2265 | __be16 *local_port, __be16 *peer_port) |
2266 | { | |
cf7fe64a HS |
2267 | int eth_len = ETH_HDR_LEN_G(be32_to_cpu(req->hdr_len)); |
2268 | int ip_len = IP_HDR_LEN_G(be32_to_cpu(req->hdr_len)); | |
cfdda9d7 | 2269 | struct iphdr *ip = (struct iphdr *)((u8 *)(req + 1) + eth_len); |
830662f6 | 2270 | struct ipv6hdr *ip6 = (struct ipv6hdr *)((u8 *)(req + 1) + eth_len); |
cfdda9d7 SW |
2271 | struct tcphdr *tcp = (struct tcphdr *) |
2272 | ((u8 *)(req + 1) + eth_len + ip_len); | |
2273 | ||
830662f6 VP |
2274 | if (ip->version == 4) { |
2275 | PDBG("%s saddr 0x%x daddr 0x%x sport %u dport %u\n", __func__, | |
2276 | ntohl(ip->saddr), ntohl(ip->daddr), ntohs(tcp->source), | |
2277 | ntohs(tcp->dest)); | |
2278 | *iptype = 4; | |
2279 | memcpy(peer_ip, &ip->saddr, 4); | |
2280 | memcpy(local_ip, &ip->daddr, 4); | |
2281 | } else { | |
2282 | PDBG("%s saddr %pI6 daddr %pI6 sport %u dport %u\n", __func__, | |
2283 | ip6->saddr.s6_addr, ip6->daddr.s6_addr, ntohs(tcp->source), | |
2284 | ntohs(tcp->dest)); | |
2285 | *iptype = 6; | |
2286 | memcpy(peer_ip, ip6->saddr.s6_addr, 16); | |
2287 | memcpy(local_ip, ip6->daddr.s6_addr, 16); | |
2288 | } | |
cfdda9d7 SW |
2289 | *peer_port = tcp->source; |
2290 | *local_port = tcp->dest; | |
2291 | ||
2292 | return; | |
2293 | } | |
2294 | ||
2295 | static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb) | |
2296 | { | |
793dad94 | 2297 | struct c4iw_ep *child_ep = NULL, *parent_ep; |
cfdda9d7 | 2298 | struct cpl_pass_accept_req *req = cplhdr(skb); |
6c53e938 | 2299 | unsigned int stid = PASS_OPEN_TID_G(ntohl(req->tos_stid)); |
cfdda9d7 SW |
2300 | struct tid_info *t = dev->rdev.lldi.tids; |
2301 | unsigned int hwtid = GET_TID(req); | |
2302 | struct dst_entry *dst; | |
830662f6 | 2303 | __u8 local_ip[16], peer_ip[16]; |
cfdda9d7 | 2304 | __be16 local_port, peer_port; |
3786cf18 | 2305 | int err; |
1cab775c | 2306 | u16 peer_mss = ntohs(req->tcpopt.mss); |
830662f6 | 2307 | int iptype; |
92e7ae71 | 2308 | unsigned short hdrs; |
cfdda9d7 SW |
2309 | |
2310 | parent_ep = lookup_stid(t, stid); | |
1cab775c VP |
2311 | if (!parent_ep) { |
2312 | PDBG("%s connect request on invalid stid %d\n", __func__, stid); | |
2313 | goto reject; | |
2314 | } | |
1cab775c | 2315 | |
cfdda9d7 SW |
2316 | if (state_read(&parent_ep->com) != LISTEN) { |
2317 | printk(KERN_ERR "%s - listening ep not in LISTEN\n", | |
2318 | __func__); | |
2319 | goto reject; | |
2320 | } | |
2321 | ||
830662f6 VP |
2322 | get_4tuple(req, &iptype, local_ip, peer_ip, &local_port, &peer_port); |
2323 | ||
cfdda9d7 | 2324 | /* Find output route */ |
830662f6 VP |
2325 | if (iptype == 4) { |
2326 | PDBG("%s parent ep %p hwtid %u laddr %pI4 raddr %pI4 lport %d rport %d peer_mss %d\n" | |
2327 | , __func__, parent_ep, hwtid, | |
2328 | local_ip, peer_ip, ntohs(local_port), | |
2329 | ntohs(peer_port), peer_mss); | |
2330 | dst = find_route(dev, *(__be32 *)local_ip, *(__be32 *)peer_ip, | |
2331 | local_port, peer_port, | |
6c53e938 | 2332 | PASS_OPEN_TOS_G(ntohl(req->tos_stid))); |
830662f6 VP |
2333 | } else { |
2334 | PDBG("%s parent ep %p hwtid %u laddr %pI6 raddr %pI6 lport %d rport %d peer_mss %d\n" | |
2335 | , __func__, parent_ep, hwtid, | |
2336 | local_ip, peer_ip, ntohs(local_port), | |
2337 | ntohs(peer_port), peer_mss); | |
2338 | dst = find_route6(dev, local_ip, peer_ip, local_port, peer_port, | |
6c53e938 | 2339 | PASS_OPEN_TOS_G(ntohl(req->tos_stid)), |
830662f6 VP |
2340 | ((struct sockaddr_in6 *) |
2341 | &parent_ep->com.local_addr)->sin6_scope_id); | |
2342 | } | |
2343 | if (!dst) { | |
cfdda9d7 SW |
2344 | printk(KERN_ERR MOD "%s - failed to find dst entry!\n", |
2345 | __func__); | |
2346 | goto reject; | |
2347 | } | |
3786cf18 DM |
2348 | |
2349 | child_ep = alloc_ep(sizeof(*child_ep), GFP_KERNEL); | |
2350 | if (!child_ep) { | |
2351 | printk(KERN_ERR MOD "%s - failed to allocate ep entry!\n", | |
cfdda9d7 SW |
2352 | __func__); |
2353 | dst_release(dst); | |
2354 | goto reject; | |
2355 | } | |
2356 | ||
830662f6 | 2357 | err = import_ep(child_ep, iptype, peer_ip, dst, dev, false); |
3786cf18 DM |
2358 | if (err) { |
2359 | printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n", | |
cfdda9d7 | 2360 | __func__); |
cfdda9d7 | 2361 | dst_release(dst); |
3786cf18 | 2362 | kfree(child_ep); |
cfdda9d7 SW |
2363 | goto reject; |
2364 | } | |
3786cf18 | 2365 | |
92e7ae71 HS |
2366 | hdrs = sizeof(struct iphdr) + sizeof(struct tcphdr) + |
2367 | ((enable_tcp_timestamps && req->tcpopt.tstamp) ? 12 : 0); | |
2368 | if (peer_mss && child_ep->mtu > (peer_mss + hdrs)) | |
2369 | child_ep->mtu = peer_mss + hdrs; | |
1cab775c | 2370 | |
cfdda9d7 SW |
2371 | state_set(&child_ep->com, CONNECTING); |
2372 | child_ep->com.dev = dev; | |
2373 | child_ep->com.cm_id = NULL; | |
5b6b8fe6 SW |
2374 | |
2375 | /* | |
2376 | * The mapped_local and mapped_remote addresses get setup with | |
2377 | * the actual 4-tuple. The local address will be based on the | |
2378 | * actual local address of the connection, but on the port number | |
2379 | * of the parent listening endpoint. The remote address is | |
2380 | * setup based on a query to the IWPM since we don't know what it | |
2381 | * originally was before mapping. If no mapping was done, then | |
2382 | * mapped_remote == remote, and mapped_local == local. | |
2383 | */ | |
830662f6 VP |
2384 | if (iptype == 4) { |
2385 | struct sockaddr_in *sin = (struct sockaddr_in *) | |
5b6b8fe6 SW |
2386 | &child_ep->com.mapped_local_addr; |
2387 | ||
830662f6 VP |
2388 | sin->sin_family = PF_INET; |
2389 | sin->sin_port = local_port; | |
2390 | sin->sin_addr.s_addr = *(__be32 *)local_ip; | |
5b6b8fe6 SW |
2391 | |
2392 | sin = (struct sockaddr_in *)&child_ep->com.local_addr; | |
2393 | sin->sin_family = PF_INET; | |
2394 | sin->sin_port = ((struct sockaddr_in *) | |
2395 | &parent_ep->com.local_addr)->sin_port; | |
2396 | sin->sin_addr.s_addr = *(__be32 *)local_ip; | |
2397 | ||
2398 | sin = (struct sockaddr_in *)&child_ep->com.mapped_remote_addr; | |
830662f6 VP |
2399 | sin->sin_family = PF_INET; |
2400 | sin->sin_port = peer_port; | |
2401 | sin->sin_addr.s_addr = *(__be32 *)peer_ip; | |
2402 | } else { | |
2403 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) | |
5b6b8fe6 SW |
2404 | &child_ep->com.mapped_local_addr; |
2405 | ||
830662f6 VP |
2406 | sin6->sin6_family = PF_INET6; |
2407 | sin6->sin6_port = local_port; | |
2408 | memcpy(sin6->sin6_addr.s6_addr, local_ip, 16); | |
5b6b8fe6 SW |
2409 | |
2410 | sin6 = (struct sockaddr_in6 *)&child_ep->com.local_addr; | |
2411 | sin6->sin6_family = PF_INET6; | |
2412 | sin6->sin6_port = ((struct sockaddr_in6 *) | |
2413 | &parent_ep->com.local_addr)->sin6_port; | |
2414 | memcpy(sin6->sin6_addr.s6_addr, local_ip, 16); | |
2415 | ||
2416 | sin6 = (struct sockaddr_in6 *)&child_ep->com.mapped_remote_addr; | |
830662f6 VP |
2417 | sin6->sin6_family = PF_INET6; |
2418 | sin6->sin6_port = peer_port; | |
2419 | memcpy(sin6->sin6_addr.s6_addr, peer_ip, 16); | |
2420 | } | |
5b6b8fe6 SW |
2421 | memcpy(&child_ep->com.remote_addr, &child_ep->com.mapped_remote_addr, |
2422 | sizeof(child_ep->com.remote_addr)); | |
940fd304 | 2423 | get_remote_addr(parent_ep, child_ep); |
5b6b8fe6 | 2424 | |
cfdda9d7 SW |
2425 | c4iw_get_ep(&parent_ep->com); |
2426 | child_ep->parent_ep = parent_ep; | |
6c53e938 | 2427 | child_ep->tos = PASS_OPEN_TOS_G(ntohl(req->tos_stid)); |
cfdda9d7 SW |
2428 | child_ep->dst = dst; |
2429 | child_ep->hwtid = hwtid; | |
cfdda9d7 SW |
2430 | |
2431 | PDBG("%s tx_chan %u smac_idx %u rss_qid %u\n", __func__, | |
3786cf18 | 2432 | child_ep->tx_chan, child_ep->smac_idx, child_ep->rss_qid); |
cfdda9d7 SW |
2433 | |
2434 | init_timer(&child_ep->timer); | |
2435 | cxgb4_insert_tid(t, child_ep, hwtid); | |
b3de6cfe | 2436 | insert_handle(dev, &dev->hwtid_idr, child_ep, child_ep->hwtid); |
830662f6 | 2437 | accept_cr(child_ep, skb, req); |
793dad94 | 2438 | set_bit(PASS_ACCEPT_REQ, &child_ep->com.history); |
cfdda9d7 SW |
2439 | goto out; |
2440 | reject: | |
830662f6 | 2441 | reject_cr(dev, hwtid, skb); |
cfdda9d7 SW |
2442 | out: |
2443 | return 0; | |
2444 | } | |
2445 | ||
2446 | static int pass_establish(struct c4iw_dev *dev, struct sk_buff *skb) | |
2447 | { | |
2448 | struct c4iw_ep *ep; | |
2449 | struct cpl_pass_establish *req = cplhdr(skb); | |
2450 | struct tid_info *t = dev->rdev.lldi.tids; | |
2451 | unsigned int tid = GET_TID(req); | |
2452 | ||
2453 | ep = lookup_tid(t, tid); | |
2454 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
2455 | ep->snd_seq = be32_to_cpu(req->snd_isn); | |
2456 | ep->rcv_seq = be32_to_cpu(req->rcv_isn); | |
2457 | ||
1cab775c VP |
2458 | PDBG("%s ep %p hwtid %u tcp_opt 0x%02x\n", __func__, ep, tid, |
2459 | ntohs(req->tcp_opt)); | |
2460 | ||
cfdda9d7 SW |
2461 | set_emss(ep, ntohs(req->tcp_opt)); |
2462 | ||
2463 | dst_confirm(ep->dst); | |
2464 | state_set(&ep->com, MPA_REQ_WAIT); | |
2465 | start_ep_timer(ep); | |
2466 | send_flowc(ep, skb); | |
793dad94 | 2467 | set_bit(PASS_ESTAB, &ep->com.history); |
cfdda9d7 SW |
2468 | |
2469 | return 0; | |
2470 | } | |
2471 | ||
2472 | static int peer_close(struct c4iw_dev *dev, struct sk_buff *skb) | |
2473 | { | |
2474 | struct cpl_peer_close *hdr = cplhdr(skb); | |
2475 | struct c4iw_ep *ep; | |
2476 | struct c4iw_qp_attributes attrs; | |
cfdda9d7 SW |
2477 | int disconnect = 1; |
2478 | int release = 0; | |
cfdda9d7 SW |
2479 | struct tid_info *t = dev->rdev.lldi.tids; |
2480 | unsigned int tid = GET_TID(hdr); | |
8da7e7a5 | 2481 | int ret; |
cfdda9d7 SW |
2482 | |
2483 | ep = lookup_tid(t, tid); | |
2484 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
2485 | dst_confirm(ep->dst); | |
2486 | ||
793dad94 | 2487 | set_bit(PEER_CLOSE, &ep->com.history); |
2f5b48c3 | 2488 | mutex_lock(&ep->com.mutex); |
cfdda9d7 SW |
2489 | switch (ep->com.state) { |
2490 | case MPA_REQ_WAIT: | |
2491 | __state_set(&ep->com, CLOSING); | |
2492 | break; | |
2493 | case MPA_REQ_SENT: | |
2494 | __state_set(&ep->com, CLOSING); | |
2495 | connect_reply_upcall(ep, -ECONNRESET); | |
2496 | break; | |
2497 | case MPA_REQ_RCVD: | |
2498 | ||
2499 | /* | |
2500 | * We're gonna mark this puppy DEAD, but keep | |
2501 | * the reference on it until the ULP accepts or | |
2502 | * rejects the CR. Also wake up anyone waiting | |
2503 | * in rdma connection migration (see c4iw_accept_cr()). | |
2504 | */ | |
2505 | __state_set(&ep->com, CLOSING); | |
cfdda9d7 | 2506 | PDBG("waking up ep %p tid %u\n", ep, ep->hwtid); |
d9594d99 | 2507 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); |
cfdda9d7 SW |
2508 | break; |
2509 | case MPA_REP_SENT: | |
2510 | __state_set(&ep->com, CLOSING); | |
cfdda9d7 | 2511 | PDBG("waking up ep %p tid %u\n", ep, ep->hwtid); |
d9594d99 | 2512 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); |
cfdda9d7 SW |
2513 | break; |
2514 | case FPDU_MODE: | |
ca5a2202 | 2515 | start_ep_timer(ep); |
cfdda9d7 | 2516 | __state_set(&ep->com, CLOSING); |
30c95c2d | 2517 | attrs.next_state = C4IW_QP_STATE_CLOSING; |
8da7e7a5 | 2518 | ret = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, |
30c95c2d | 2519 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); |
8da7e7a5 SW |
2520 | if (ret != -ECONNRESET) { |
2521 | peer_close_upcall(ep); | |
2522 | disconnect = 1; | |
2523 | } | |
cfdda9d7 SW |
2524 | break; |
2525 | case ABORTING: | |
2526 | disconnect = 0; | |
2527 | break; | |
2528 | case CLOSING: | |
2529 | __state_set(&ep->com, MORIBUND); | |
2530 | disconnect = 0; | |
2531 | break; | |
2532 | case MORIBUND: | |
b33bd0cb | 2533 | (void)stop_ep_timer(ep); |
cfdda9d7 SW |
2534 | if (ep->com.cm_id && ep->com.qp) { |
2535 | attrs.next_state = C4IW_QP_STATE_IDLE; | |
2536 | c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, | |
2537 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); | |
2538 | } | |
be13b2df | 2539 | close_complete_upcall(ep, 0); |
cfdda9d7 SW |
2540 | __state_set(&ep->com, DEAD); |
2541 | release = 1; | |
2542 | disconnect = 0; | |
2543 | break; | |
2544 | case DEAD: | |
2545 | disconnect = 0; | |
2546 | break; | |
2547 | default: | |
2548 | BUG_ON(1); | |
2549 | } | |
2f5b48c3 | 2550 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
2551 | if (disconnect) |
2552 | c4iw_ep_disconnect(ep, 0, GFP_KERNEL); | |
2553 | if (release) | |
2554 | release_ep_resources(ep); | |
2555 | return 0; | |
2556 | } | |
2557 | ||
cfdda9d7 SW |
2558 | static int peer_abort(struct c4iw_dev *dev, struct sk_buff *skb) |
2559 | { | |
2560 | struct cpl_abort_req_rss *req = cplhdr(skb); | |
2561 | struct c4iw_ep *ep; | |
2562 | struct cpl_abort_rpl *rpl; | |
2563 | struct sk_buff *rpl_skb; | |
2564 | struct c4iw_qp_attributes attrs; | |
2565 | int ret; | |
2566 | int release = 0; | |
cfdda9d7 SW |
2567 | struct tid_info *t = dev->rdev.lldi.tids; |
2568 | unsigned int tid = GET_TID(req); | |
cfdda9d7 SW |
2569 | |
2570 | ep = lookup_tid(t, tid); | |
7a2cea2a | 2571 | if (is_neg_adv(req->status)) { |
179d03bb H |
2572 | PDBG("%s Negative advice on abort- tid %u status %d (%s)\n", |
2573 | __func__, ep->hwtid, req->status, | |
2574 | neg_adv_str(req->status)); | |
2575 | ep->stats.abort_neg_adv++; | |
2576 | mutex_lock(&dev->rdev.stats.lock); | |
2577 | dev->rdev.stats.neg_adv++; | |
2578 | mutex_unlock(&dev->rdev.stats.lock); | |
cfdda9d7 SW |
2579 | return 0; |
2580 | } | |
cfdda9d7 SW |
2581 | PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid, |
2582 | ep->com.state); | |
793dad94 | 2583 | set_bit(PEER_ABORT, &ep->com.history); |
2f5b48c3 SW |
2584 | |
2585 | /* | |
2586 | * Wake up any threads in rdma_init() or rdma_fini(). | |
d2fe99e8 KS |
2587 | * However, this is not needed if com state is just |
2588 | * MPA_REQ_SENT | |
2f5b48c3 | 2589 | */ |
d2fe99e8 KS |
2590 | if (ep->com.state != MPA_REQ_SENT) |
2591 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); | |
2f5b48c3 SW |
2592 | |
2593 | mutex_lock(&ep->com.mutex); | |
cfdda9d7 SW |
2594 | switch (ep->com.state) { |
2595 | case CONNECTING: | |
2596 | break; | |
2597 | case MPA_REQ_WAIT: | |
b33bd0cb | 2598 | (void)stop_ep_timer(ep); |
cfdda9d7 SW |
2599 | break; |
2600 | case MPA_REQ_SENT: | |
b33bd0cb | 2601 | (void)stop_ep_timer(ep); |
fe7e0a4d | 2602 | if (mpa_rev == 1 || (mpa_rev == 2 && ep->tried_with_mpa_v1)) |
d2fe99e8 KS |
2603 | connect_reply_upcall(ep, -ECONNRESET); |
2604 | else { | |
2605 | /* | |
2606 | * we just don't send notification upwards because we | |
2607 | * want to retry with mpa_v1 without upper layers even | |
2608 | * knowing it. | |
2609 | * | |
2610 | * do some housekeeping so as to re-initiate the | |
2611 | * connection | |
2612 | */ | |
2613 | PDBG("%s: mpa_rev=%d. Retrying with mpav1\n", __func__, | |
2614 | mpa_rev); | |
2615 | ep->retry_with_mpa_v1 = 1; | |
2616 | } | |
cfdda9d7 SW |
2617 | break; |
2618 | case MPA_REP_SENT: | |
cfdda9d7 SW |
2619 | break; |
2620 | case MPA_REQ_RCVD: | |
cfdda9d7 SW |
2621 | break; |
2622 | case MORIBUND: | |
2623 | case CLOSING: | |
ca5a2202 | 2624 | stop_ep_timer(ep); |
cfdda9d7 SW |
2625 | /*FALLTHROUGH*/ |
2626 | case FPDU_MODE: | |
2627 | if (ep->com.cm_id && ep->com.qp) { | |
2628 | attrs.next_state = C4IW_QP_STATE_ERROR; | |
2629 | ret = c4iw_modify_qp(ep->com.qp->rhp, | |
2630 | ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, | |
2631 | &attrs, 1); | |
2632 | if (ret) | |
2633 | printk(KERN_ERR MOD | |
2634 | "%s - qp <- error failed!\n", | |
2635 | __func__); | |
2636 | } | |
2637 | peer_abort_upcall(ep); | |
2638 | break; | |
2639 | case ABORTING: | |
2640 | break; | |
2641 | case DEAD: | |
2642 | PDBG("%s PEER_ABORT IN DEAD STATE!!!!\n", __func__); | |
2f5b48c3 | 2643 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
2644 | return 0; |
2645 | default: | |
2646 | BUG_ON(1); | |
2647 | break; | |
2648 | } | |
2649 | dst_confirm(ep->dst); | |
2650 | if (ep->com.state != ABORTING) { | |
2651 | __state_set(&ep->com, DEAD); | |
d2fe99e8 KS |
2652 | /* we don't release if we want to retry with mpa_v1 */ |
2653 | if (!ep->retry_with_mpa_v1) | |
2654 | release = 1; | |
cfdda9d7 | 2655 | } |
2f5b48c3 | 2656 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
2657 | |
2658 | rpl_skb = get_skb(skb, sizeof(*rpl), GFP_KERNEL); | |
2659 | if (!rpl_skb) { | |
2660 | printk(KERN_ERR MOD "%s - cannot allocate skb!\n", | |
2661 | __func__); | |
2662 | release = 1; | |
2663 | goto out; | |
2664 | } | |
2665 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
2666 | rpl = (struct cpl_abort_rpl *) skb_put(rpl_skb, sizeof(*rpl)); | |
2667 | INIT_TP_WR(rpl, ep->hwtid); | |
2668 | OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_RPL, ep->hwtid)); | |
2669 | rpl->cmd = CPL_ABORT_NO_RST; | |
2670 | c4iw_ofld_send(&ep->com.dev->rdev, rpl_skb); | |
2671 | out: | |
cfdda9d7 SW |
2672 | if (release) |
2673 | release_ep_resources(ep); | |
fe7e0a4d VP |
2674 | else if (ep->retry_with_mpa_v1) { |
2675 | remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid); | |
d2fe99e8 KS |
2676 | cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid); |
2677 | dst_release(ep->dst); | |
2678 | cxgb4_l2t_release(ep->l2t); | |
2679 | c4iw_reconnect(ep); | |
2680 | } | |
2681 | ||
cfdda9d7 SW |
2682 | return 0; |
2683 | } | |
2684 | ||
2685 | static int close_con_rpl(struct c4iw_dev *dev, struct sk_buff *skb) | |
2686 | { | |
2687 | struct c4iw_ep *ep; | |
2688 | struct c4iw_qp_attributes attrs; | |
2689 | struct cpl_close_con_rpl *rpl = cplhdr(skb); | |
cfdda9d7 SW |
2690 | int release = 0; |
2691 | struct tid_info *t = dev->rdev.lldi.tids; | |
2692 | unsigned int tid = GET_TID(rpl); | |
cfdda9d7 SW |
2693 | |
2694 | ep = lookup_tid(t, tid); | |
2695 | ||
2696 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
2697 | BUG_ON(!ep); | |
2698 | ||
2699 | /* The cm_id may be null if we failed to connect */ | |
2f5b48c3 | 2700 | mutex_lock(&ep->com.mutex); |
cfdda9d7 SW |
2701 | switch (ep->com.state) { |
2702 | case CLOSING: | |
2703 | __state_set(&ep->com, MORIBUND); | |
2704 | break; | |
2705 | case MORIBUND: | |
b33bd0cb | 2706 | (void)stop_ep_timer(ep); |
cfdda9d7 SW |
2707 | if ((ep->com.cm_id) && (ep->com.qp)) { |
2708 | attrs.next_state = C4IW_QP_STATE_IDLE; | |
2709 | c4iw_modify_qp(ep->com.qp->rhp, | |
2710 | ep->com.qp, | |
2711 | C4IW_QP_ATTR_NEXT_STATE, | |
2712 | &attrs, 1); | |
2713 | } | |
be13b2df | 2714 | close_complete_upcall(ep, 0); |
cfdda9d7 SW |
2715 | __state_set(&ep->com, DEAD); |
2716 | release = 1; | |
2717 | break; | |
2718 | case ABORTING: | |
2719 | case DEAD: | |
2720 | break; | |
2721 | default: | |
2722 | BUG_ON(1); | |
2723 | break; | |
2724 | } | |
2f5b48c3 | 2725 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
2726 | if (release) |
2727 | release_ep_resources(ep); | |
2728 | return 0; | |
2729 | } | |
2730 | ||
2731 | static int terminate(struct c4iw_dev *dev, struct sk_buff *skb) | |
2732 | { | |
0e42c1f4 | 2733 | struct cpl_rdma_terminate *rpl = cplhdr(skb); |
cfdda9d7 | 2734 | struct tid_info *t = dev->rdev.lldi.tids; |
0e42c1f4 SW |
2735 | unsigned int tid = GET_TID(rpl); |
2736 | struct c4iw_ep *ep; | |
2737 | struct c4iw_qp_attributes attrs; | |
cfdda9d7 SW |
2738 | |
2739 | ep = lookup_tid(t, tid); | |
0e42c1f4 | 2740 | BUG_ON(!ep); |
cfdda9d7 | 2741 | |
30c95c2d | 2742 | if (ep && ep->com.qp) { |
0e42c1f4 SW |
2743 | printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", tid, |
2744 | ep->com.qp->wq.sq.qid); | |
2745 | attrs.next_state = C4IW_QP_STATE_TERMINATE; | |
2746 | c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, | |
2747 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); | |
2748 | } else | |
30c95c2d | 2749 | printk(KERN_WARNING MOD "TERM received tid %u no ep/qp\n", tid); |
cfdda9d7 | 2750 | |
cfdda9d7 SW |
2751 | return 0; |
2752 | } | |
2753 | ||
2754 | /* | |
2755 | * Upcall from the adapter indicating data has been transmitted. | |
2756 | * For us its just the single MPA request or reply. We can now free | |
2757 | * the skb holding the mpa message. | |
2758 | */ | |
2759 | static int fw4_ack(struct c4iw_dev *dev, struct sk_buff *skb) | |
2760 | { | |
2761 | struct c4iw_ep *ep; | |
2762 | struct cpl_fw4_ack *hdr = cplhdr(skb); | |
2763 | u8 credits = hdr->credits; | |
2764 | unsigned int tid = GET_TID(hdr); | |
2765 | struct tid_info *t = dev->rdev.lldi.tids; | |
2766 | ||
2767 | ||
2768 | ep = lookup_tid(t, tid); | |
2769 | PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits); | |
2770 | if (credits == 0) { | |
aa1ad260 JP |
2771 | PDBG("%s 0 credit ack ep %p tid %u state %u\n", |
2772 | __func__, ep, ep->hwtid, state_read(&ep->com)); | |
cfdda9d7 SW |
2773 | return 0; |
2774 | } | |
2775 | ||
2776 | dst_confirm(ep->dst); | |
2777 | if (ep->mpa_skb) { | |
2778 | PDBG("%s last streaming msg ack ep %p tid %u state %u " | |
2779 | "initiator %u freeing skb\n", __func__, ep, ep->hwtid, | |
2780 | state_read(&ep->com), ep->mpa_attr.initiator ? 1 : 0); | |
2781 | kfree_skb(ep->mpa_skb); | |
2782 | ep->mpa_skb = NULL; | |
2783 | } | |
2784 | return 0; | |
2785 | } | |
2786 | ||
cfdda9d7 SW |
2787 | int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) |
2788 | { | |
a7db89eb SW |
2789 | int err = 0; |
2790 | int disconnect = 0; | |
cfdda9d7 SW |
2791 | struct c4iw_ep *ep = to_ep(cm_id); |
2792 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
2793 | ||
a7db89eb SW |
2794 | mutex_lock(&ep->com.mutex); |
2795 | if (ep->com.state == DEAD) { | |
2796 | mutex_unlock(&ep->com.mutex); | |
cfdda9d7 SW |
2797 | c4iw_put_ep(&ep->com); |
2798 | return -ECONNRESET; | |
2799 | } | |
793dad94 | 2800 | set_bit(ULP_REJECT, &ep->com.history); |
a7db89eb | 2801 | BUG_ON(ep->com.state != MPA_REQ_RCVD); |
cfdda9d7 SW |
2802 | if (mpa_rev == 0) |
2803 | abort_connection(ep, NULL, GFP_KERNEL); | |
2804 | else { | |
2805 | err = send_mpa_reject(ep, pdata, pdata_len); | |
a7db89eb | 2806 | disconnect = 1; |
cfdda9d7 | 2807 | } |
a7db89eb SW |
2808 | mutex_unlock(&ep->com.mutex); |
2809 | if (disconnect) | |
2810 | err = c4iw_ep_disconnect(ep, 0, GFP_KERNEL); | |
cfdda9d7 SW |
2811 | c4iw_put_ep(&ep->com); |
2812 | return 0; | |
2813 | } | |
2814 | ||
2815 | int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) | |
2816 | { | |
2817 | int err; | |
2818 | struct c4iw_qp_attributes attrs; | |
2819 | enum c4iw_qp_attr_mask mask; | |
2820 | struct c4iw_ep *ep = to_ep(cm_id); | |
2821 | struct c4iw_dev *h = to_c4iw_dev(cm_id->device); | |
2822 | struct c4iw_qp *qp = get_qhp(h, conn_param->qpn); | |
2823 | ||
2824 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
a7db89eb SW |
2825 | |
2826 | mutex_lock(&ep->com.mutex); | |
2827 | if (ep->com.state == DEAD) { | |
cfdda9d7 SW |
2828 | err = -ECONNRESET; |
2829 | goto err; | |
2830 | } | |
2831 | ||
a7db89eb | 2832 | BUG_ON(ep->com.state != MPA_REQ_RCVD); |
cfdda9d7 SW |
2833 | BUG_ON(!qp); |
2834 | ||
793dad94 | 2835 | set_bit(ULP_ACCEPT, &ep->com.history); |
4c2c5763 HS |
2836 | if ((conn_param->ord > cur_max_read_depth(ep->com.dev)) || |
2837 | (conn_param->ird > cur_max_read_depth(ep->com.dev))) { | |
cfdda9d7 SW |
2838 | abort_connection(ep, NULL, GFP_KERNEL); |
2839 | err = -EINVAL; | |
2840 | goto err; | |
2841 | } | |
2842 | ||
d2fe99e8 KS |
2843 | if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { |
2844 | if (conn_param->ord > ep->ird) { | |
4c2c5763 HS |
2845 | if (RELAXED_IRD_NEGOTIATION) { |
2846 | ep->ord = ep->ird; | |
2847 | } else { | |
2848 | ep->ird = conn_param->ird; | |
2849 | ep->ord = conn_param->ord; | |
2850 | send_mpa_reject(ep, conn_param->private_data, | |
2851 | conn_param->private_data_len); | |
2852 | abort_connection(ep, NULL, GFP_KERNEL); | |
2853 | err = -ENOMEM; | |
2854 | goto err; | |
2855 | } | |
d2fe99e8 | 2856 | } |
4c2c5763 HS |
2857 | if (conn_param->ird < ep->ord) { |
2858 | if (RELAXED_IRD_NEGOTIATION && | |
2859 | ep->ord <= h->rdev.lldi.max_ordird_qp) { | |
2860 | conn_param->ird = ep->ord; | |
2861 | } else { | |
d2fe99e8 KS |
2862 | abort_connection(ep, NULL, GFP_KERNEL); |
2863 | err = -ENOMEM; | |
2864 | goto err; | |
2865 | } | |
2866 | } | |
d2fe99e8 | 2867 | } |
cfdda9d7 SW |
2868 | ep->ird = conn_param->ird; |
2869 | ep->ord = conn_param->ord; | |
2870 | ||
4c2c5763 | 2871 | if (ep->mpa_attr.version == 1) { |
d2fe99e8 KS |
2872 | if (peer2peer && ep->ird == 0) |
2873 | ep->ird = 1; | |
4c2c5763 HS |
2874 | } else { |
2875 | if (peer2peer && | |
2876 | (ep->mpa_attr.p2p_type != FW_RI_INIT_P2PTYPE_DISABLED) && | |
2877 | (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) && ep->ord == 0) | |
2878 | ep->ird = 1; | |
2879 | } | |
cfdda9d7 SW |
2880 | |
2881 | PDBG("%s %d ird %d ord %d\n", __func__, __LINE__, ep->ird, ep->ord); | |
2882 | ||
d2fe99e8 KS |
2883 | cm_id->add_ref(cm_id); |
2884 | ep->com.cm_id = cm_id; | |
2885 | ep->com.qp = qp; | |
325abead | 2886 | ref_qp(ep); |
d2fe99e8 | 2887 | |
cfdda9d7 SW |
2888 | /* bind QP to EP and move to RTS */ |
2889 | attrs.mpa_attr = ep->mpa_attr; | |
2890 | attrs.max_ird = ep->ird; | |
2891 | attrs.max_ord = ep->ord; | |
2892 | attrs.llp_stream_handle = ep; | |
2893 | attrs.next_state = C4IW_QP_STATE_RTS; | |
2894 | ||
2895 | /* bind QP and TID with INIT_WR */ | |
2896 | mask = C4IW_QP_ATTR_NEXT_STATE | | |
2897 | C4IW_QP_ATTR_LLP_STREAM_HANDLE | | |
2898 | C4IW_QP_ATTR_MPA_ATTR | | |
2899 | C4IW_QP_ATTR_MAX_IRD | | |
2900 | C4IW_QP_ATTR_MAX_ORD; | |
2901 | ||
2902 | err = c4iw_modify_qp(ep->com.qp->rhp, | |
2903 | ep->com.qp, mask, &attrs, 1); | |
2904 | if (err) | |
2905 | goto err1; | |
2906 | err = send_mpa_reply(ep, conn_param->private_data, | |
2907 | conn_param->private_data_len); | |
2908 | if (err) | |
2909 | goto err1; | |
2910 | ||
a7db89eb | 2911 | __state_set(&ep->com, FPDU_MODE); |
cfdda9d7 | 2912 | established_upcall(ep); |
a7db89eb | 2913 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
2914 | c4iw_put_ep(&ep->com); |
2915 | return 0; | |
2916 | err1: | |
2917 | ep->com.cm_id = NULL; | |
4c2c5763 | 2918 | abort_connection(ep, NULL, GFP_KERNEL); |
cfdda9d7 SW |
2919 | cm_id->rem_ref(cm_id); |
2920 | err: | |
a7db89eb | 2921 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
2922 | c4iw_put_ep(&ep->com); |
2923 | return err; | |
2924 | } | |
2925 | ||
830662f6 VP |
2926 | static int pick_local_ipaddrs(struct c4iw_dev *dev, struct iw_cm_id *cm_id) |
2927 | { | |
2928 | struct in_device *ind; | |
2929 | int found = 0; | |
2930 | struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr; | |
2931 | struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr; | |
2932 | ||
2933 | ind = in_dev_get(dev->rdev.lldi.ports[0]); | |
2934 | if (!ind) | |
2935 | return -EADDRNOTAVAIL; | |
2936 | for_primary_ifa(ind) { | |
2937 | laddr->sin_addr.s_addr = ifa->ifa_address; | |
2938 | raddr->sin_addr.s_addr = ifa->ifa_address; | |
2939 | found = 1; | |
2940 | break; | |
2941 | } | |
2942 | endfor_ifa(ind); | |
2943 | in_dev_put(ind); | |
2944 | return found ? 0 : -EADDRNOTAVAIL; | |
2945 | } | |
2946 | ||
2947 | static int get_lladdr(struct net_device *dev, struct in6_addr *addr, | |
2948 | unsigned char banned_flags) | |
2949 | { | |
2950 | struct inet6_dev *idev; | |
2951 | int err = -EADDRNOTAVAIL; | |
2952 | ||
2953 | rcu_read_lock(); | |
2954 | idev = __in6_dev_get(dev); | |
2955 | if (idev != NULL) { | |
2956 | struct inet6_ifaddr *ifp; | |
2957 | ||
2958 | read_lock_bh(&idev->lock); | |
2959 | list_for_each_entry(ifp, &idev->addr_list, if_list) { | |
2960 | if (ifp->scope == IFA_LINK && | |
2961 | !(ifp->flags & banned_flags)) { | |
2962 | memcpy(addr, &ifp->addr, 16); | |
2963 | err = 0; | |
2964 | break; | |
2965 | } | |
2966 | } | |
2967 | read_unlock_bh(&idev->lock); | |
2968 | } | |
2969 | rcu_read_unlock(); | |
2970 | return err; | |
2971 | } | |
2972 | ||
2973 | static int pick_local_ip6addrs(struct c4iw_dev *dev, struct iw_cm_id *cm_id) | |
2974 | { | |
2975 | struct in6_addr uninitialized_var(addr); | |
2976 | struct sockaddr_in6 *la6 = (struct sockaddr_in6 *)&cm_id->local_addr; | |
2977 | struct sockaddr_in6 *ra6 = (struct sockaddr_in6 *)&cm_id->remote_addr; | |
2978 | ||
2979 | if (get_lladdr(dev->rdev.lldi.ports[0], &addr, IFA_F_TENTATIVE)) { | |
2980 | memcpy(la6->sin6_addr.s6_addr, &addr, 16); | |
2981 | memcpy(ra6->sin6_addr.s6_addr, &addr, 16); | |
2982 | return 0; | |
2983 | } | |
2984 | return -EADDRNOTAVAIL; | |
2985 | } | |
2986 | ||
cfdda9d7 SW |
2987 | int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) |
2988 | { | |
cfdda9d7 SW |
2989 | struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); |
2990 | struct c4iw_ep *ep; | |
3786cf18 | 2991 | int err = 0; |
9eccfe10 SW |
2992 | struct sockaddr_in *laddr; |
2993 | struct sockaddr_in *raddr; | |
2994 | struct sockaddr_in6 *laddr6; | |
2995 | struct sockaddr_in6 *raddr6; | |
2996 | struct iwpm_dev_data pm_reg_msg; | |
2997 | struct iwpm_sa_data pm_msg; | |
830662f6 VP |
2998 | __u8 *ra; |
2999 | int iptype; | |
9eccfe10 | 3000 | int iwpm_err = 0; |
cfdda9d7 | 3001 | |
4c2c5763 HS |
3002 | if ((conn_param->ord > cur_max_read_depth(dev)) || |
3003 | (conn_param->ird > cur_max_read_depth(dev))) { | |
be4c9bad RD |
3004 | err = -EINVAL; |
3005 | goto out; | |
3006 | } | |
cfdda9d7 SW |
3007 | ep = alloc_ep(sizeof(*ep), GFP_KERNEL); |
3008 | if (!ep) { | |
3009 | printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); | |
3010 | err = -ENOMEM; | |
3011 | goto out; | |
3012 | } | |
3013 | init_timer(&ep->timer); | |
3014 | ep->plen = conn_param->private_data_len; | |
3015 | if (ep->plen) | |
3016 | memcpy(ep->mpa_pkt + sizeof(struct mpa_message), | |
3017 | conn_param->private_data, ep->plen); | |
3018 | ep->ird = conn_param->ird; | |
3019 | ep->ord = conn_param->ord; | |
3020 | ||
3021 | if (peer2peer && ep->ord == 0) | |
3022 | ep->ord = 1; | |
3023 | ||
3024 | cm_id->add_ref(cm_id); | |
3025 | ep->com.dev = dev; | |
3026 | ep->com.cm_id = cm_id; | |
3027 | ep->com.qp = get_qhp(dev, conn_param->qpn); | |
830662f6 VP |
3028 | if (!ep->com.qp) { |
3029 | PDBG("%s qpn 0x%x not found!\n", __func__, conn_param->qpn); | |
3030 | err = -EINVAL; | |
9eccfe10 | 3031 | goto fail1; |
830662f6 | 3032 | } |
325abead | 3033 | ref_qp(ep); |
cfdda9d7 SW |
3034 | PDBG("%s qpn 0x%x qp %p cm_id %p\n", __func__, conn_param->qpn, |
3035 | ep->com.qp, cm_id); | |
3036 | ||
3037 | /* | |
3038 | * Allocate an active TID to initiate a TCP connection. | |
3039 | */ | |
3040 | ep->atid = cxgb4_alloc_atid(dev->rdev.lldi.tids, ep); | |
3041 | if (ep->atid == -1) { | |
3042 | printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __func__); | |
3043 | err = -ENOMEM; | |
9eccfe10 | 3044 | goto fail1; |
cfdda9d7 | 3045 | } |
793dad94 | 3046 | insert_handle(dev, &dev->atid_idr, ep, ep->atid); |
cfdda9d7 | 3047 | |
9eccfe10 SW |
3048 | memcpy(&ep->com.local_addr, &cm_id->local_addr, |
3049 | sizeof(ep->com.local_addr)); | |
3050 | memcpy(&ep->com.remote_addr, &cm_id->remote_addr, | |
3051 | sizeof(ep->com.remote_addr)); | |
3052 | ||
3053 | /* No port mapper available, go with the specified peer information */ | |
3054 | memcpy(&ep->com.mapped_local_addr, &cm_id->local_addr, | |
3055 | sizeof(ep->com.mapped_local_addr)); | |
3056 | memcpy(&ep->com.mapped_remote_addr, &cm_id->remote_addr, | |
3057 | sizeof(ep->com.mapped_remote_addr)); | |
3058 | ||
3059 | c4iw_form_reg_msg(dev, &pm_reg_msg); | |
3060 | iwpm_err = iwpm_register_pid(&pm_reg_msg, RDMA_NL_C4IW); | |
3061 | if (iwpm_err) { | |
3062 | PDBG("%s: Port Mapper reg pid fail (err = %d).\n", | |
3063 | __func__, iwpm_err); | |
3064 | } | |
3065 | if (iwpm_valid_pid() && !iwpm_err) { | |
3066 | c4iw_form_pm_msg(ep, &pm_msg); | |
3067 | iwpm_err = iwpm_add_and_query_mapping(&pm_msg, RDMA_NL_C4IW); | |
3068 | if (iwpm_err) | |
3069 | PDBG("%s: Port Mapper query fail (err = %d).\n", | |
3070 | __func__, iwpm_err); | |
3071 | else | |
3072 | c4iw_record_pm_msg(ep, &pm_msg); | |
3073 | } | |
3074 | if (iwpm_create_mapinfo(&ep->com.local_addr, | |
3075 | &ep->com.mapped_local_addr, RDMA_NL_C4IW)) { | |
3076 | iwpm_remove_mapping(&ep->com.local_addr, RDMA_NL_C4IW); | |
3077 | err = -ENOMEM; | |
3078 | goto fail1; | |
3079 | } | |
3080 | print_addr(&ep->com, __func__, "add_query/create_mapinfo"); | |
3081 | set_bit(RELEASE_MAPINFO, &ep->com.flags); | |
3082 | ||
3083 | laddr = (struct sockaddr_in *)&ep->com.mapped_local_addr; | |
3084 | raddr = (struct sockaddr_in *)&ep->com.mapped_remote_addr; | |
3085 | laddr6 = (struct sockaddr_in6 *)&ep->com.mapped_local_addr; | |
3086 | raddr6 = (struct sockaddr_in6 *) &ep->com.mapped_remote_addr; | |
3087 | ||
830662f6 VP |
3088 | if (cm_id->remote_addr.ss_family == AF_INET) { |
3089 | iptype = 4; | |
3090 | ra = (__u8 *)&raddr->sin_addr; | |
cfdda9d7 | 3091 | |
830662f6 VP |
3092 | /* |
3093 | * Handle loopback requests to INADDR_ANY. | |
3094 | */ | |
3095 | if ((__force int)raddr->sin_addr.s_addr == INADDR_ANY) { | |
3096 | err = pick_local_ipaddrs(dev, cm_id); | |
3097 | if (err) | |
9eccfe10 | 3098 | goto fail1; |
830662f6 VP |
3099 | } |
3100 | ||
3101 | /* find a route */ | |
3102 | PDBG("%s saddr %pI4 sport 0x%x raddr %pI4 rport 0x%x\n", | |
3103 | __func__, &laddr->sin_addr, ntohs(laddr->sin_port), | |
3104 | ra, ntohs(raddr->sin_port)); | |
3105 | ep->dst = find_route(dev, laddr->sin_addr.s_addr, | |
3106 | raddr->sin_addr.s_addr, laddr->sin_port, | |
3107 | raddr->sin_port, 0); | |
3108 | } else { | |
3109 | iptype = 6; | |
3110 | ra = (__u8 *)&raddr6->sin6_addr; | |
3111 | ||
3112 | /* | |
3113 | * Handle loopback requests to INADDR_ANY. | |
3114 | */ | |
3115 | if (ipv6_addr_type(&raddr6->sin6_addr) == IPV6_ADDR_ANY) { | |
3116 | err = pick_local_ip6addrs(dev, cm_id); | |
3117 | if (err) | |
9eccfe10 | 3118 | goto fail1; |
830662f6 VP |
3119 | } |
3120 | ||
3121 | /* find a route */ | |
3122 | PDBG("%s saddr %pI6 sport 0x%x raddr %pI6 rport 0x%x\n", | |
3123 | __func__, laddr6->sin6_addr.s6_addr, | |
3124 | ntohs(laddr6->sin6_port), | |
3125 | raddr6->sin6_addr.s6_addr, ntohs(raddr6->sin6_port)); | |
3126 | ep->dst = find_route6(dev, laddr6->sin6_addr.s6_addr, | |
3127 | raddr6->sin6_addr.s6_addr, | |
3128 | laddr6->sin6_port, raddr6->sin6_port, 0, | |
3129 | raddr6->sin6_scope_id); | |
3130 | } | |
3131 | if (!ep->dst) { | |
cfdda9d7 SW |
3132 | printk(KERN_ERR MOD "%s - cannot find route.\n", __func__); |
3133 | err = -EHOSTUNREACH; | |
9eccfe10 | 3134 | goto fail2; |
cfdda9d7 | 3135 | } |
cfdda9d7 | 3136 | |
830662f6 | 3137 | err = import_ep(ep, iptype, ra, ep->dst, ep->com.dev, true); |
3786cf18 | 3138 | if (err) { |
cfdda9d7 | 3139 | printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__); |
9eccfe10 | 3140 | goto fail3; |
cfdda9d7 SW |
3141 | } |
3142 | ||
3143 | PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n", | |
3144 | __func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid, | |
3145 | ep->l2t->idx); | |
3146 | ||
3147 | state_set(&ep->com, CONNECTING); | |
3148 | ep->tos = 0; | |
cfdda9d7 SW |
3149 | |
3150 | /* send connect request to rnic */ | |
3151 | err = send_connect(ep); | |
3152 | if (!err) | |
3153 | goto out; | |
3154 | ||
3155 | cxgb4_l2t_release(ep->l2t); | |
cfdda9d7 | 3156 | fail3: |
9eccfe10 SW |
3157 | dst_release(ep->dst); |
3158 | fail2: | |
793dad94 | 3159 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid); |
cfdda9d7 | 3160 | cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid); |
9eccfe10 | 3161 | fail1: |
cfdda9d7 SW |
3162 | cm_id->rem_ref(cm_id); |
3163 | c4iw_put_ep(&ep->com); | |
3164 | out: | |
3165 | return err; | |
3166 | } | |
3167 | ||
830662f6 VP |
3168 | static int create_server6(struct c4iw_dev *dev, struct c4iw_listen_ep *ep) |
3169 | { | |
3170 | int err; | |
9eccfe10 SW |
3171 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) |
3172 | &ep->com.mapped_local_addr; | |
830662f6 VP |
3173 | |
3174 | c4iw_init_wr_wait(&ep->com.wr_wait); | |
3175 | err = cxgb4_create_server6(ep->com.dev->rdev.lldi.ports[0], | |
3176 | ep->stid, &sin6->sin6_addr, | |
3177 | sin6->sin6_port, | |
3178 | ep->com.dev->rdev.lldi.rxq_ids[0]); | |
3179 | if (!err) | |
3180 | err = c4iw_wait_for_reply(&ep->com.dev->rdev, | |
3181 | &ep->com.wr_wait, | |
3182 | 0, 0, __func__); | |
e6b11163 H |
3183 | else if (err > 0) |
3184 | err = net_xmit_errno(err); | |
830662f6 VP |
3185 | if (err) |
3186 | pr_err("cxgb4_create_server6/filter failed err %d stid %d laddr %pI6 lport %d\n", | |
3187 | err, ep->stid, | |
3188 | sin6->sin6_addr.s6_addr, ntohs(sin6->sin6_port)); | |
3189 | return err; | |
3190 | } | |
3191 | ||
3192 | static int create_server4(struct c4iw_dev *dev, struct c4iw_listen_ep *ep) | |
3193 | { | |
3194 | int err; | |
9eccfe10 SW |
3195 | struct sockaddr_in *sin = (struct sockaddr_in *) |
3196 | &ep->com.mapped_local_addr; | |
830662f6 VP |
3197 | |
3198 | if (dev->rdev.lldi.enable_fw_ofld_conn) { | |
3199 | do { | |
3200 | err = cxgb4_create_server_filter( | |
3201 | ep->com.dev->rdev.lldi.ports[0], ep->stid, | |
3202 | sin->sin_addr.s_addr, sin->sin_port, 0, | |
3203 | ep->com.dev->rdev.lldi.rxq_ids[0], 0, 0); | |
3204 | if (err == -EBUSY) { | |
3205 | set_current_state(TASK_UNINTERRUPTIBLE); | |
3206 | schedule_timeout(usecs_to_jiffies(100)); | |
3207 | } | |
3208 | } while (err == -EBUSY); | |
3209 | } else { | |
3210 | c4iw_init_wr_wait(&ep->com.wr_wait); | |
3211 | err = cxgb4_create_server(ep->com.dev->rdev.lldi.ports[0], | |
3212 | ep->stid, sin->sin_addr.s_addr, sin->sin_port, | |
3213 | 0, ep->com.dev->rdev.lldi.rxq_ids[0]); | |
3214 | if (!err) | |
3215 | err = c4iw_wait_for_reply(&ep->com.dev->rdev, | |
3216 | &ep->com.wr_wait, | |
3217 | 0, 0, __func__); | |
e6b11163 H |
3218 | else if (err > 0) |
3219 | err = net_xmit_errno(err); | |
830662f6 VP |
3220 | } |
3221 | if (err) | |
3222 | pr_err("cxgb4_create_server/filter failed err %d stid %d laddr %pI4 lport %d\n" | |
3223 | , err, ep->stid, | |
3224 | &sin->sin_addr, ntohs(sin->sin_port)); | |
3225 | return err; | |
3226 | } | |
3227 | ||
cfdda9d7 SW |
3228 | int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog) |
3229 | { | |
3230 | int err = 0; | |
3231 | struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); | |
3232 | struct c4iw_listen_ep *ep; | |
9eccfe10 SW |
3233 | struct iwpm_dev_data pm_reg_msg; |
3234 | struct iwpm_sa_data pm_msg; | |
3235 | int iwpm_err = 0; | |
cfdda9d7 | 3236 | |
cfdda9d7 SW |
3237 | might_sleep(); |
3238 | ||
3239 | ep = alloc_ep(sizeof(*ep), GFP_KERNEL); | |
3240 | if (!ep) { | |
3241 | printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); | |
3242 | err = -ENOMEM; | |
3243 | goto fail1; | |
3244 | } | |
3245 | PDBG("%s ep %p\n", __func__, ep); | |
3246 | cm_id->add_ref(cm_id); | |
3247 | ep->com.cm_id = cm_id; | |
3248 | ep->com.dev = dev; | |
3249 | ep->backlog = backlog; | |
24d44a39 SW |
3250 | memcpy(&ep->com.local_addr, &cm_id->local_addr, |
3251 | sizeof(ep->com.local_addr)); | |
cfdda9d7 SW |
3252 | |
3253 | /* | |
3254 | * Allocate a server TID. | |
3255 | */ | |
8c044690 KS |
3256 | if (dev->rdev.lldi.enable_fw_ofld_conn && |
3257 | ep->com.local_addr.ss_family == AF_INET) | |
830662f6 VP |
3258 | ep->stid = cxgb4_alloc_sftid(dev->rdev.lldi.tids, |
3259 | cm_id->local_addr.ss_family, ep); | |
1cab775c | 3260 | else |
830662f6 VP |
3261 | ep->stid = cxgb4_alloc_stid(dev->rdev.lldi.tids, |
3262 | cm_id->local_addr.ss_family, ep); | |
1cab775c | 3263 | |
cfdda9d7 | 3264 | if (ep->stid == -1) { |
be4c9bad | 3265 | printk(KERN_ERR MOD "%s - cannot alloc stid.\n", __func__); |
cfdda9d7 SW |
3266 | err = -ENOMEM; |
3267 | goto fail2; | |
3268 | } | |
793dad94 | 3269 | insert_handle(dev, &dev->stid_idr, ep, ep->stid); |
9eccfe10 SW |
3270 | |
3271 | /* No port mapper available, go with the specified info */ | |
3272 | memcpy(&ep->com.mapped_local_addr, &cm_id->local_addr, | |
3273 | sizeof(ep->com.mapped_local_addr)); | |
3274 | ||
3275 | c4iw_form_reg_msg(dev, &pm_reg_msg); | |
3276 | iwpm_err = iwpm_register_pid(&pm_reg_msg, RDMA_NL_C4IW); | |
3277 | if (iwpm_err) { | |
3278 | PDBG("%s: Port Mapper reg pid fail (err = %d).\n", | |
3279 | __func__, iwpm_err); | |
3280 | } | |
3281 | if (iwpm_valid_pid() && !iwpm_err) { | |
3282 | memcpy(&pm_msg.loc_addr, &ep->com.local_addr, | |
3283 | sizeof(ep->com.local_addr)); | |
3284 | iwpm_err = iwpm_add_mapping(&pm_msg, RDMA_NL_C4IW); | |
3285 | if (iwpm_err) | |
3286 | PDBG("%s: Port Mapper query fail (err = %d).\n", | |
3287 | __func__, iwpm_err); | |
3288 | else | |
3289 | memcpy(&ep->com.mapped_local_addr, | |
3290 | &pm_msg.mapped_loc_addr, | |
3291 | sizeof(ep->com.mapped_local_addr)); | |
3292 | } | |
3293 | if (iwpm_create_mapinfo(&ep->com.local_addr, | |
3294 | &ep->com.mapped_local_addr, RDMA_NL_C4IW)) { | |
3295 | err = -ENOMEM; | |
3296 | goto fail3; | |
3297 | } | |
3298 | print_addr(&ep->com, __func__, "add_mapping/create_mapinfo"); | |
3299 | ||
3300 | set_bit(RELEASE_MAPINFO, &ep->com.flags); | |
cfdda9d7 | 3301 | state_set(&ep->com, LISTEN); |
830662f6 VP |
3302 | if (ep->com.local_addr.ss_family == AF_INET) |
3303 | err = create_server4(dev, ep); | |
3304 | else | |
3305 | err = create_server6(dev, ep); | |
cfdda9d7 SW |
3306 | if (!err) { |
3307 | cm_id->provider_data = ep; | |
3308 | goto out; | |
3309 | } | |
9eccfe10 SW |
3310 | |
3311 | fail3: | |
830662f6 VP |
3312 | cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid, |
3313 | ep->com.local_addr.ss_family); | |
cfdda9d7 SW |
3314 | fail2: |
3315 | cm_id->rem_ref(cm_id); | |
3316 | c4iw_put_ep(&ep->com); | |
3317 | fail1: | |
3318 | out: | |
3319 | return err; | |
3320 | } | |
3321 | ||
3322 | int c4iw_destroy_listen(struct iw_cm_id *cm_id) | |
3323 | { | |
3324 | int err; | |
3325 | struct c4iw_listen_ep *ep = to_listen_ep(cm_id); | |
3326 | ||
3327 | PDBG("%s ep %p\n", __func__, ep); | |
3328 | ||
3329 | might_sleep(); | |
3330 | state_set(&ep->com, DEAD); | |
830662f6 VP |
3331 | if (ep->com.dev->rdev.lldi.enable_fw_ofld_conn && |
3332 | ep->com.local_addr.ss_family == AF_INET) { | |
1cab775c VP |
3333 | err = cxgb4_remove_server_filter( |
3334 | ep->com.dev->rdev.lldi.ports[0], ep->stid, | |
3335 | ep->com.dev->rdev.lldi.rxq_ids[0], 0); | |
3336 | } else { | |
3337 | c4iw_init_wr_wait(&ep->com.wr_wait); | |
830662f6 VP |
3338 | err = cxgb4_remove_server( |
3339 | ep->com.dev->rdev.lldi.ports[0], ep->stid, | |
3340 | ep->com.dev->rdev.lldi.rxq_ids[0], 0); | |
1cab775c VP |
3341 | if (err) |
3342 | goto done; | |
3343 | err = c4iw_wait_for_reply(&ep->com.dev->rdev, &ep->com.wr_wait, | |
3344 | 0, 0, __func__); | |
3345 | } | |
793dad94 | 3346 | remove_handle(ep->com.dev, &ep->com.dev->stid_idr, ep->stid); |
830662f6 VP |
3347 | cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid, |
3348 | ep->com.local_addr.ss_family); | |
cfdda9d7 | 3349 | done: |
cfdda9d7 SW |
3350 | cm_id->rem_ref(cm_id); |
3351 | c4iw_put_ep(&ep->com); | |
3352 | return err; | |
3353 | } | |
3354 | ||
3355 | int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) | |
3356 | { | |
3357 | int ret = 0; | |
cfdda9d7 SW |
3358 | int close = 0; |
3359 | int fatal = 0; | |
3360 | struct c4iw_rdev *rdev; | |
cfdda9d7 | 3361 | |
2f5b48c3 | 3362 | mutex_lock(&ep->com.mutex); |
cfdda9d7 SW |
3363 | |
3364 | PDBG("%s ep %p state %s, abrupt %d\n", __func__, ep, | |
3365 | states[ep->com.state], abrupt); | |
3366 | ||
3367 | rdev = &ep->com.dev->rdev; | |
3368 | if (c4iw_fatal_error(rdev)) { | |
3369 | fatal = 1; | |
be13b2df | 3370 | close_complete_upcall(ep, -EIO); |
cfdda9d7 SW |
3371 | ep->com.state = DEAD; |
3372 | } | |
3373 | switch (ep->com.state) { | |
3374 | case MPA_REQ_WAIT: | |
3375 | case MPA_REQ_SENT: | |
3376 | case MPA_REQ_RCVD: | |
3377 | case MPA_REP_SENT: | |
3378 | case FPDU_MODE: | |
3379 | close = 1; | |
3380 | if (abrupt) | |
3381 | ep->com.state = ABORTING; | |
3382 | else { | |
3383 | ep->com.state = CLOSING; | |
ca5a2202 | 3384 | start_ep_timer(ep); |
cfdda9d7 SW |
3385 | } |
3386 | set_bit(CLOSE_SENT, &ep->com.flags); | |
3387 | break; | |
3388 | case CLOSING: | |
3389 | if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) { | |
3390 | close = 1; | |
3391 | if (abrupt) { | |
b33bd0cb | 3392 | (void)stop_ep_timer(ep); |
cfdda9d7 SW |
3393 | ep->com.state = ABORTING; |
3394 | } else | |
3395 | ep->com.state = MORIBUND; | |
3396 | } | |
3397 | break; | |
3398 | case MORIBUND: | |
3399 | case ABORTING: | |
3400 | case DEAD: | |
3401 | PDBG("%s ignoring disconnect ep %p state %u\n", | |
3402 | __func__, ep, ep->com.state); | |
3403 | break; | |
3404 | default: | |
3405 | BUG(); | |
3406 | break; | |
3407 | } | |
3408 | ||
cfdda9d7 | 3409 | if (close) { |
8da7e7a5 | 3410 | if (abrupt) { |
793dad94 | 3411 | set_bit(EP_DISC_ABORT, &ep->com.history); |
be13b2df | 3412 | close_complete_upcall(ep, -ECONNRESET); |
8da7e7a5 | 3413 | ret = send_abort(ep, NULL, gfp); |
793dad94 VP |
3414 | } else { |
3415 | set_bit(EP_DISC_CLOSE, &ep->com.history); | |
cfdda9d7 | 3416 | ret = send_halfclose(ep, gfp); |
793dad94 | 3417 | } |
cfdda9d7 SW |
3418 | if (ret) |
3419 | fatal = 1; | |
3420 | } | |
8da7e7a5 | 3421 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
3422 | if (fatal) |
3423 | release_ep_resources(ep); | |
3424 | return ret; | |
3425 | } | |
3426 | ||
1cab775c VP |
3427 | static void active_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb, |
3428 | struct cpl_fw6_msg_ofld_connection_wr_rpl *req) | |
3429 | { | |
3430 | struct c4iw_ep *ep; | |
793dad94 | 3431 | int atid = be32_to_cpu(req->tid); |
1cab775c | 3432 | |
ef5d6355 VP |
3433 | ep = (struct c4iw_ep *)lookup_atid(dev->rdev.lldi.tids, |
3434 | (__force u32) req->tid); | |
1cab775c VP |
3435 | if (!ep) |
3436 | return; | |
3437 | ||
3438 | switch (req->retval) { | |
3439 | case FW_ENOMEM: | |
793dad94 VP |
3440 | set_bit(ACT_RETRY_NOMEM, &ep->com.history); |
3441 | if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) { | |
3442 | send_fw_act_open_req(ep, atid); | |
3443 | return; | |
3444 | } | |
1cab775c | 3445 | case FW_EADDRINUSE: |
793dad94 VP |
3446 | set_bit(ACT_RETRY_INUSE, &ep->com.history); |
3447 | if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) { | |
3448 | send_fw_act_open_req(ep, atid); | |
3449 | return; | |
3450 | } | |
1cab775c VP |
3451 | break; |
3452 | default: | |
3453 | pr_info("%s unexpected ofld conn wr retval %d\n", | |
3454 | __func__, req->retval); | |
3455 | break; | |
3456 | } | |
793dad94 VP |
3457 | pr_err("active ofld_connect_wr failure %d atid %d\n", |
3458 | req->retval, atid); | |
3459 | mutex_lock(&dev->rdev.stats.lock); | |
3460 | dev->rdev.stats.act_ofld_conn_fails++; | |
3461 | mutex_unlock(&dev->rdev.stats.lock); | |
1cab775c | 3462 | connect_reply_upcall(ep, status2errno(req->retval)); |
793dad94 VP |
3463 | state_set(&ep->com, DEAD); |
3464 | remove_handle(dev, &dev->atid_idr, atid); | |
3465 | cxgb4_free_atid(dev->rdev.lldi.tids, atid); | |
3466 | dst_release(ep->dst); | |
3467 | cxgb4_l2t_release(ep->l2t); | |
3468 | c4iw_put_ep(&ep->com); | |
1cab775c VP |
3469 | } |
3470 | ||
3471 | static void passive_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb, | |
3472 | struct cpl_fw6_msg_ofld_connection_wr_rpl *req) | |
3473 | { | |
3474 | struct sk_buff *rpl_skb; | |
3475 | struct cpl_pass_accept_req *cpl; | |
3476 | int ret; | |
3477 | ||
710a3110 | 3478 | rpl_skb = (struct sk_buff *)(unsigned long)req->cookie; |
1cab775c VP |
3479 | BUG_ON(!rpl_skb); |
3480 | if (req->retval) { | |
3481 | PDBG("%s passive open failure %d\n", __func__, req->retval); | |
793dad94 VP |
3482 | mutex_lock(&dev->rdev.stats.lock); |
3483 | dev->rdev.stats.pas_ofld_conn_fails++; | |
3484 | mutex_unlock(&dev->rdev.stats.lock); | |
1cab775c VP |
3485 | kfree_skb(rpl_skb); |
3486 | } else { | |
3487 | cpl = (struct cpl_pass_accept_req *)cplhdr(rpl_skb); | |
3488 | OPCODE_TID(cpl) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ, | |
ef5d6355 VP |
3489 | (__force u32) htonl( |
3490 | (__force u32) req->tid))); | |
1cab775c VP |
3491 | ret = pass_accept_req(dev, rpl_skb); |
3492 | if (!ret) | |
3493 | kfree_skb(rpl_skb); | |
3494 | } | |
3495 | return; | |
3496 | } | |
3497 | ||
3498 | static int deferred_fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb) | |
2f5b48c3 SW |
3499 | { |
3500 | struct cpl_fw6_msg *rpl = cplhdr(skb); | |
1cab775c VP |
3501 | struct cpl_fw6_msg_ofld_connection_wr_rpl *req; |
3502 | ||
3503 | switch (rpl->type) { | |
3504 | case FW6_TYPE_CQE: | |
3505 | c4iw_ev_dispatch(dev, (struct t4_cqe *)&rpl->data[0]); | |
3506 | break; | |
3507 | case FW6_TYPE_OFLD_CONNECTION_WR_RPL: | |
3508 | req = (struct cpl_fw6_msg_ofld_connection_wr_rpl *)rpl->data; | |
3509 | switch (req->t_state) { | |
3510 | case TCP_SYN_SENT: | |
3511 | active_ofld_conn_reply(dev, skb, req); | |
3512 | break; | |
3513 | case TCP_SYN_RECV: | |
3514 | passive_ofld_conn_reply(dev, skb, req); | |
3515 | break; | |
3516 | default: | |
3517 | pr_err("%s unexpected ofld conn wr state %d\n", | |
3518 | __func__, req->t_state); | |
3519 | break; | |
3520 | } | |
3521 | break; | |
3522 | } | |
3523 | return 0; | |
3524 | } | |
3525 | ||
3526 | static void build_cpl_pass_accept_req(struct sk_buff *skb, int stid , u8 tos) | |
3527 | { | |
3528 | u32 l2info; | |
f079af7a | 3529 | u16 vlantag, len, hdr_len, eth_hdr_len; |
1cab775c VP |
3530 | u8 intf; |
3531 | struct cpl_rx_pkt *cpl = cplhdr(skb); | |
3532 | struct cpl_pass_accept_req *req; | |
3533 | struct tcp_options_received tmp_opt; | |
f079af7a | 3534 | struct c4iw_dev *dev; |
1cab775c | 3535 | |
f079af7a | 3536 | dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *))); |
1cab775c | 3537 | /* Store values from cpl_rx_pkt in temporary location. */ |
ef5d6355 VP |
3538 | vlantag = (__force u16) cpl->vlan; |
3539 | len = (__force u16) cpl->len; | |
3540 | l2info = (__force u32) cpl->l2info; | |
3541 | hdr_len = (__force u16) cpl->hdr_len; | |
1cab775c VP |
3542 | intf = cpl->iff; |
3543 | ||
3544 | __skb_pull(skb, sizeof(*req) + sizeof(struct rss_header)); | |
3545 | ||
3546 | /* | |
3547 | * We need to parse the TCP options from SYN packet. | |
3548 | * to generate cpl_pass_accept_req. | |
3549 | */ | |
3550 | memset(&tmp_opt, 0, sizeof(tmp_opt)); | |
3551 | tcp_clear_options(&tmp_opt); | |
1a2c6181 | 3552 | tcp_parse_options(skb, &tmp_opt, 0, NULL); |
1cab775c VP |
3553 | |
3554 | req = (struct cpl_pass_accept_req *)__skb_push(skb, sizeof(*req)); | |
3555 | memset(req, 0, sizeof(*req)); | |
cf7fe64a HS |
3556 | req->l2info = cpu_to_be16(SYN_INTF_V(intf) | |
3557 | SYN_MAC_IDX_V(RX_MACIDX_G( | |
ef5d6355 | 3558 | (__force int) htonl(l2info))) | |
cf7fe64a | 3559 | SYN_XACT_MATCH_F); |
f079af7a | 3560 | eth_hdr_len = is_t4(dev->rdev.lldi.adapter_type) ? |
bdc590b9 HS |
3561 | RX_ETHHDR_LEN_G((__force int)htonl(l2info)) : |
3562 | RX_T5_ETHHDR_LEN_G((__force int)htonl(l2info)); | |
cf7fe64a | 3563 | req->hdr_len = cpu_to_be32(SYN_RX_CHAN_V(RX_CHAN_G( |
ef5d6355 | 3564 | (__force int) htonl(l2info))) | |
cf7fe64a | 3565 | TCP_HDR_LEN_V(RX_TCPHDR_LEN_G( |
ef5d6355 | 3566 | (__force int) htons(hdr_len))) | |
cf7fe64a | 3567 | IP_HDR_LEN_V(RX_IPHDR_LEN_G( |
ef5d6355 | 3568 | (__force int) htons(hdr_len))) | |
cf7fe64a | 3569 | ETH_HDR_LEN_V(RX_ETHHDR_LEN_G(eth_hdr_len))); |
ef5d6355 VP |
3570 | req->vlan = (__force __be16) vlantag; |
3571 | req->len = (__force __be16) len; | |
6c53e938 HS |
3572 | req->tos_stid = cpu_to_be32(PASS_OPEN_TID_V(stid) | |
3573 | PASS_OPEN_TOS_V(tos)); | |
1cab775c VP |
3574 | req->tcpopt.mss = htons(tmp_opt.mss_clamp); |
3575 | if (tmp_opt.wscale_ok) | |
3576 | req->tcpopt.wsf = tmp_opt.snd_wscale; | |
3577 | req->tcpopt.tstamp = tmp_opt.saw_tstamp; | |
3578 | if (tmp_opt.sack_ok) | |
3579 | req->tcpopt.sack = 1; | |
3580 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ, 0)); | |
3581 | return; | |
3582 | } | |
3583 | ||
3584 | static void send_fw_pass_open_req(struct c4iw_dev *dev, struct sk_buff *skb, | |
3585 | __be32 laddr, __be16 lport, | |
3586 | __be32 raddr, __be16 rport, | |
3587 | u32 rcv_isn, u32 filter, u16 window, | |
3588 | u32 rss_qid, u8 port_id) | |
3589 | { | |
3590 | struct sk_buff *req_skb; | |
3591 | struct fw_ofld_connection_wr *req; | |
3592 | struct cpl_pass_accept_req *cpl = cplhdr(skb); | |
1ce1d471 | 3593 | int ret; |
1cab775c VP |
3594 | |
3595 | req_skb = alloc_skb(sizeof(struct fw_ofld_connection_wr), GFP_KERNEL); | |
3596 | req = (struct fw_ofld_connection_wr *)__skb_put(req_skb, sizeof(*req)); | |
3597 | memset(req, 0, sizeof(*req)); | |
6c53e938 | 3598 | req->op_compl = htonl(WR_OP_V(FW_OFLD_CONNECTION_WR) | FW_WR_COMPL_F); |
e2ac9628 | 3599 | req->len16_pkd = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*req), 16))); |
77a80e23 | 3600 | req->le.version_cpl = htonl(FW_OFLD_CONNECTION_WR_CPL_F); |
ef5d6355 | 3601 | req->le.filter = (__force __be32) filter; |
1cab775c VP |
3602 | req->le.lport = lport; |
3603 | req->le.pport = rport; | |
3604 | req->le.u.ipv4.lip = laddr; | |
3605 | req->le.u.ipv4.pip = raddr; | |
3606 | req->tcb.rcv_nxt = htonl(rcv_isn + 1); | |
3607 | req->tcb.rcv_adv = htons(window); | |
3608 | req->tcb.t_state_to_astid = | |
77a80e23 HS |
3609 | htonl(FW_OFLD_CONNECTION_WR_T_STATE_V(TCP_SYN_RECV) | |
3610 | FW_OFLD_CONNECTION_WR_RCV_SCALE_V(cpl->tcpopt.wsf) | | |
3611 | FW_OFLD_CONNECTION_WR_ASTID_V( | |
6c53e938 | 3612 | PASS_OPEN_TID_G(ntohl(cpl->tos_stid)))); |
1cab775c VP |
3613 | |
3614 | /* | |
3615 | * We store the qid in opt2 which will be used by the firmware | |
3616 | * to send us the wr response. | |
3617 | */ | |
d7990b0c | 3618 | req->tcb.opt2 = htonl(RSS_QUEUE_V(rss_qid)); |
1cab775c VP |
3619 | |
3620 | /* | |
3621 | * We initialize the MSS index in TCB to 0xF. | |
3622 | * So that when driver sends cpl_pass_accept_rpl | |
3623 | * TCB picks up the correct value. If this was 0 | |
3624 | * TP will ignore any value > 0 for MSS index. | |
3625 | */ | |
d7990b0c | 3626 | req->tcb.opt0 = cpu_to_be64(MSS_IDX_V(0xF)); |
6198dd8d | 3627 | req->cookie = (uintptr_t)skb; |
1cab775c VP |
3628 | |
3629 | set_wr_txq(req_skb, CPL_PRIORITY_CONTROL, port_id); | |
1ce1d471 SW |
3630 | ret = cxgb4_ofld_send(dev->rdev.lldi.ports[0], req_skb); |
3631 | if (ret < 0) { | |
3632 | pr_err("%s - cxgb4_ofld_send error %d - dropping\n", __func__, | |
3633 | ret); | |
3634 | kfree_skb(skb); | |
3635 | kfree_skb(req_skb); | |
3636 | } | |
1cab775c VP |
3637 | } |
3638 | ||
3639 | /* | |
3640 | * Handler for CPL_RX_PKT message. Need to handle cpl_rx_pkt | |
3641 | * messages when a filter is being used instead of server to | |
3642 | * redirect a syn packet. When packets hit filter they are redirected | |
3643 | * to the offload queue and driver tries to establish the connection | |
3644 | * using firmware work request. | |
3645 | */ | |
3646 | static int rx_pkt(struct c4iw_dev *dev, struct sk_buff *skb) | |
3647 | { | |
3648 | int stid; | |
3649 | unsigned int filter; | |
3650 | struct ethhdr *eh = NULL; | |
3651 | struct vlan_ethhdr *vlan_eh = NULL; | |
3652 | struct iphdr *iph; | |
3653 | struct tcphdr *tcph; | |
3654 | struct rss_header *rss = (void *)skb->data; | |
3655 | struct cpl_rx_pkt *cpl = (void *)skb->data; | |
3656 | struct cpl_pass_accept_req *req = (void *)(rss + 1); | |
3657 | struct l2t_entry *e; | |
3658 | struct dst_entry *dst; | |
1cab775c VP |
3659 | struct c4iw_ep *lep; |
3660 | u16 window; | |
3661 | struct port_info *pi; | |
3662 | struct net_device *pdev; | |
f079af7a | 3663 | u16 rss_qid, eth_hdr_len; |
1cab775c VP |
3664 | int step; |
3665 | u32 tx_chan; | |
3666 | struct neighbour *neigh; | |
3667 | ||
3668 | /* Drop all non-SYN packets */ | |
bdc590b9 | 3669 | if (!(cpl->l2info & cpu_to_be32(RXF_SYN_F))) |
1cab775c VP |
3670 | goto reject; |
3671 | ||
3672 | /* | |
3673 | * Drop all packets which did not hit the filter. | |
3674 | * Unlikely to happen. | |
3675 | */ | |
3676 | if (!(rss->filter_hit && rss->filter_tid)) | |
3677 | goto reject; | |
3678 | ||
3679 | /* | |
3680 | * Calculate the server tid from filter hit index from cpl_rx_pkt. | |
3681 | */ | |
a4ea025f | 3682 | stid = (__force int) cpu_to_be32((__force u32) rss->hash_val); |
1cab775c VP |
3683 | |
3684 | lep = (struct c4iw_ep *)lookup_stid(dev->rdev.lldi.tids, stid); | |
3685 | if (!lep) { | |
3686 | PDBG("%s connect request on invalid stid %d\n", __func__, stid); | |
3687 | goto reject; | |
3688 | } | |
3689 | ||
f079af7a | 3690 | eth_hdr_len = is_t4(dev->rdev.lldi.adapter_type) ? |
bdc590b9 HS |
3691 | RX_ETHHDR_LEN_G(htonl(cpl->l2info)) : |
3692 | RX_T5_ETHHDR_LEN_G(htonl(cpl->l2info)); | |
f079af7a | 3693 | if (eth_hdr_len == ETH_HLEN) { |
1cab775c VP |
3694 | eh = (struct ethhdr *)(req + 1); |
3695 | iph = (struct iphdr *)(eh + 1); | |
3696 | } else { | |
3697 | vlan_eh = (struct vlan_ethhdr *)(req + 1); | |
3698 | iph = (struct iphdr *)(vlan_eh + 1); | |
3699 | skb->vlan_tci = ntohs(cpl->vlan); | |
3700 | } | |
3701 | ||
3702 | if (iph->version != 0x4) | |
3703 | goto reject; | |
3704 | ||
3705 | tcph = (struct tcphdr *)(iph + 1); | |
3706 | skb_set_network_header(skb, (void *)iph - (void *)rss); | |
3707 | skb_set_transport_header(skb, (void *)tcph - (void *)rss); | |
3708 | skb_get(skb); | |
3709 | ||
3710 | PDBG("%s lip 0x%x lport %u pip 0x%x pport %u tos %d\n", __func__, | |
3711 | ntohl(iph->daddr), ntohs(tcph->dest), ntohl(iph->saddr), | |
3712 | ntohs(tcph->source), iph->tos); | |
3713 | ||
830662f6 VP |
3714 | dst = find_route(dev, iph->daddr, iph->saddr, tcph->dest, tcph->source, |
3715 | iph->tos); | |
3716 | if (!dst) { | |
1cab775c VP |
3717 | pr_err("%s - failed to find dst entry!\n", |
3718 | __func__); | |
3719 | goto reject; | |
3720 | } | |
1cab775c VP |
3721 | neigh = dst_neigh_lookup_skb(dst, skb); |
3722 | ||
aaa0c23c ZZ |
3723 | if (!neigh) { |
3724 | pr_err("%s - failed to allocate neigh!\n", | |
3725 | __func__); | |
3726 | goto free_dst; | |
3727 | } | |
3728 | ||
1cab775c VP |
3729 | if (neigh->dev->flags & IFF_LOOPBACK) { |
3730 | pdev = ip_dev_find(&init_net, iph->daddr); | |
3731 | e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh, | |
3732 | pdev, 0); | |
3733 | pi = (struct port_info *)netdev_priv(pdev); | |
3734 | tx_chan = cxgb4_port_chan(pdev); | |
3735 | dev_put(pdev); | |
3736 | } else { | |
830662f6 | 3737 | pdev = get_real_dev(neigh->dev); |
1cab775c | 3738 | e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh, |
830662f6 VP |
3739 | pdev, 0); |
3740 | pi = (struct port_info *)netdev_priv(pdev); | |
3741 | tx_chan = cxgb4_port_chan(pdev); | |
1cab775c | 3742 | } |
ebf00060 | 3743 | neigh_release(neigh); |
1cab775c VP |
3744 | if (!e) { |
3745 | pr_err("%s - failed to allocate l2t entry!\n", | |
3746 | __func__); | |
3747 | goto free_dst; | |
3748 | } | |
3749 | ||
3750 | step = dev->rdev.lldi.nrxq / dev->rdev.lldi.nchan; | |
3751 | rss_qid = dev->rdev.lldi.rxq_ids[pi->port_id * step]; | |
ef5d6355 | 3752 | window = (__force u16) htons((__force u16)tcph->window); |
1cab775c VP |
3753 | |
3754 | /* Calcuate filter portion for LE region. */ | |
41b4f86c KS |
3755 | filter = (__force unsigned int) cpu_to_be32(cxgb4_select_ntuple( |
3756 | dev->rdev.lldi.ports[0], | |
3757 | e)); | |
1cab775c VP |
3758 | |
3759 | /* | |
3760 | * Synthesize the cpl_pass_accept_req. We have everything except the | |
3761 | * TID. Once firmware sends a reply with TID we update the TID field | |
3762 | * in cpl and pass it through the regular cpl_pass_accept_req path. | |
3763 | */ | |
3764 | build_cpl_pass_accept_req(skb, stid, iph->tos); | |
3765 | send_fw_pass_open_req(dev, skb, iph->daddr, tcph->dest, iph->saddr, | |
3766 | tcph->source, ntohl(tcph->seq), filter, window, | |
3767 | rss_qid, pi->port_id); | |
3768 | cxgb4_l2t_release(e); | |
3769 | free_dst: | |
3770 | dst_release(dst); | |
3771 | reject: | |
2f5b48c3 SW |
3772 | return 0; |
3773 | } | |
3774 | ||
be4c9bad RD |
3775 | /* |
3776 | * These are the real handlers that are called from a | |
3777 | * work queue. | |
3778 | */ | |
3779 | static c4iw_handler_func work_handlers[NUM_CPL_CMDS] = { | |
3780 | [CPL_ACT_ESTABLISH] = act_establish, | |
3781 | [CPL_ACT_OPEN_RPL] = act_open_rpl, | |
3782 | [CPL_RX_DATA] = rx_data, | |
3783 | [CPL_ABORT_RPL_RSS] = abort_rpl, | |
3784 | [CPL_ABORT_RPL] = abort_rpl, | |
3785 | [CPL_PASS_OPEN_RPL] = pass_open_rpl, | |
3786 | [CPL_CLOSE_LISTSRV_RPL] = close_listsrv_rpl, | |
3787 | [CPL_PASS_ACCEPT_REQ] = pass_accept_req, | |
3788 | [CPL_PASS_ESTABLISH] = pass_establish, | |
3789 | [CPL_PEER_CLOSE] = peer_close, | |
3790 | [CPL_ABORT_REQ_RSS] = peer_abort, | |
3791 | [CPL_CLOSE_CON_RPL] = close_con_rpl, | |
3792 | [CPL_RDMA_TERMINATE] = terminate, | |
2f5b48c3 | 3793 | [CPL_FW4_ACK] = fw4_ack, |
1cab775c VP |
3794 | [CPL_FW6_MSG] = deferred_fw6_msg, |
3795 | [CPL_RX_PKT] = rx_pkt | |
be4c9bad RD |
3796 | }; |
3797 | ||
3798 | static void process_timeout(struct c4iw_ep *ep) | |
3799 | { | |
3800 | struct c4iw_qp_attributes attrs; | |
3801 | int abort = 1; | |
3802 | ||
2f5b48c3 | 3803 | mutex_lock(&ep->com.mutex); |
be4c9bad RD |
3804 | PDBG("%s ep %p tid %u state %d\n", __func__, ep, ep->hwtid, |
3805 | ep->com.state); | |
793dad94 | 3806 | set_bit(TIMEDOUT, &ep->com.history); |
be4c9bad RD |
3807 | switch (ep->com.state) { |
3808 | case MPA_REQ_SENT: | |
3809 | __state_set(&ep->com, ABORTING); | |
3810 | connect_reply_upcall(ep, -ETIMEDOUT); | |
3811 | break; | |
3812 | case MPA_REQ_WAIT: | |
3813 | __state_set(&ep->com, ABORTING); | |
3814 | break; | |
3815 | case CLOSING: | |
3816 | case MORIBUND: | |
3817 | if (ep->com.cm_id && ep->com.qp) { | |
3818 | attrs.next_state = C4IW_QP_STATE_ERROR; | |
3819 | c4iw_modify_qp(ep->com.qp->rhp, | |
3820 | ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, | |
3821 | &attrs, 1); | |
3822 | } | |
3823 | __state_set(&ep->com, ABORTING); | |
be13b2df | 3824 | close_complete_upcall(ep, -ETIMEDOUT); |
be4c9bad | 3825 | break; |
b33bd0cb SW |
3826 | case ABORTING: |
3827 | case DEAD: | |
3828 | ||
3829 | /* | |
3830 | * These states are expected if the ep timed out at the same | |
3831 | * time as another thread was calling stop_ep_timer(). | |
3832 | * So we silently do nothing for these states. | |
3833 | */ | |
3834 | abort = 0; | |
3835 | break; | |
be4c9bad | 3836 | default: |
76f267b7 | 3837 | WARN(1, "%s unexpected state ep %p tid %u state %u\n", |
be4c9bad | 3838 | __func__, ep, ep->hwtid, ep->com.state); |
be4c9bad RD |
3839 | abort = 0; |
3840 | } | |
be4c9bad RD |
3841 | if (abort) |
3842 | abort_connection(ep, NULL, GFP_KERNEL); | |
cc18b939 | 3843 | mutex_unlock(&ep->com.mutex); |
be4c9bad RD |
3844 | c4iw_put_ep(&ep->com); |
3845 | } | |
3846 | ||
3847 | static void process_timedout_eps(void) | |
3848 | { | |
3849 | struct c4iw_ep *ep; | |
3850 | ||
3851 | spin_lock_irq(&timeout_lock); | |
3852 | while (!list_empty(&timeout_list)) { | |
3853 | struct list_head *tmp; | |
3854 | ||
3855 | tmp = timeout_list.next; | |
3856 | list_del(tmp); | |
b33bd0cb SW |
3857 | tmp->next = NULL; |
3858 | tmp->prev = NULL; | |
be4c9bad RD |
3859 | spin_unlock_irq(&timeout_lock); |
3860 | ep = list_entry(tmp, struct c4iw_ep, entry); | |
3861 | process_timeout(ep); | |
3862 | spin_lock_irq(&timeout_lock); | |
3863 | } | |
3864 | spin_unlock_irq(&timeout_lock); | |
3865 | } | |
3866 | ||
3867 | static void process_work(struct work_struct *work) | |
3868 | { | |
3869 | struct sk_buff *skb = NULL; | |
3870 | struct c4iw_dev *dev; | |
c1d7356c | 3871 | struct cpl_act_establish *rpl; |
be4c9bad RD |
3872 | unsigned int opcode; |
3873 | int ret; | |
3874 | ||
b33bd0cb | 3875 | process_timedout_eps(); |
be4c9bad RD |
3876 | while ((skb = skb_dequeue(&rxq))) { |
3877 | rpl = cplhdr(skb); | |
3878 | dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *))); | |
3879 | opcode = rpl->ot.opcode; | |
3880 | ||
3881 | BUG_ON(!work_handlers[opcode]); | |
3882 | ret = work_handlers[opcode](dev, skb); | |
3883 | if (!ret) | |
3884 | kfree_skb(skb); | |
b33bd0cb | 3885 | process_timedout_eps(); |
be4c9bad | 3886 | } |
be4c9bad RD |
3887 | } |
3888 | ||
3889 | static DECLARE_WORK(skb_work, process_work); | |
3890 | ||
3891 | static void ep_timeout(unsigned long arg) | |
3892 | { | |
3893 | struct c4iw_ep *ep = (struct c4iw_ep *)arg; | |
1ec779cc | 3894 | int kickit = 0; |
be4c9bad RD |
3895 | |
3896 | spin_lock(&timeout_lock); | |
1ec779cc | 3897 | if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { |
b33bd0cb SW |
3898 | /* |
3899 | * Only insert if it is not already on the list. | |
3900 | */ | |
3901 | if (!ep->entry.next) { | |
3902 | list_add_tail(&ep->entry, &timeout_list); | |
3903 | kickit = 1; | |
3904 | } | |
1ec779cc | 3905 | } |
be4c9bad | 3906 | spin_unlock(&timeout_lock); |
1ec779cc VP |
3907 | if (kickit) |
3908 | queue_work(workq, &skb_work); | |
be4c9bad RD |
3909 | } |
3910 | ||
cfdda9d7 SW |
3911 | /* |
3912 | * All the CM events are handled on a work queue to have a safe context. | |
3913 | */ | |
3914 | static int sched(struct c4iw_dev *dev, struct sk_buff *skb) | |
3915 | { | |
3916 | ||
3917 | /* | |
3918 | * Save dev in the skb->cb area. | |
3919 | */ | |
3920 | *((struct c4iw_dev **) (skb->cb + sizeof(void *))) = dev; | |
3921 | ||
3922 | /* | |
3923 | * Queue the skb and schedule the worker thread. | |
3924 | */ | |
3925 | skb_queue_tail(&rxq, skb); | |
3926 | queue_work(workq, &skb_work); | |
3927 | return 0; | |
3928 | } | |
3929 | ||
3930 | static int set_tcb_rpl(struct c4iw_dev *dev, struct sk_buff *skb) | |
3931 | { | |
3932 | struct cpl_set_tcb_rpl *rpl = cplhdr(skb); | |
3933 | ||
3934 | if (rpl->status != CPL_ERR_NONE) { | |
3935 | printk(KERN_ERR MOD "Unexpected SET_TCB_RPL status %u " | |
3936 | "for tid %u\n", rpl->status, GET_TID(rpl)); | |
3937 | } | |
2f5b48c3 | 3938 | kfree_skb(skb); |
cfdda9d7 SW |
3939 | return 0; |
3940 | } | |
3941 | ||
be4c9bad RD |
3942 | static int fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb) |
3943 | { | |
3944 | struct cpl_fw6_msg *rpl = cplhdr(skb); | |
3945 | struct c4iw_wr_wait *wr_waitp; | |
3946 | int ret; | |
3947 | ||
3948 | PDBG("%s type %u\n", __func__, rpl->type); | |
3949 | ||
3950 | switch (rpl->type) { | |
5be78ee9 | 3951 | case FW6_TYPE_WR_RPL: |
be4c9bad | 3952 | ret = (int)((be64_to_cpu(rpl->data[0]) >> 8) & 0xff); |
c8e081a1 | 3953 | wr_waitp = (struct c4iw_wr_wait *)(__force unsigned long) rpl->data[1]; |
be4c9bad | 3954 | PDBG("%s wr_waitp %p ret %u\n", __func__, wr_waitp, ret); |
d9594d99 SW |
3955 | if (wr_waitp) |
3956 | c4iw_wake_up(wr_waitp, ret ? -ret : 0); | |
2f5b48c3 | 3957 | kfree_skb(skb); |
be4c9bad | 3958 | break; |
5be78ee9 | 3959 | case FW6_TYPE_CQE: |
5be78ee9 | 3960 | case FW6_TYPE_OFLD_CONNECTION_WR_RPL: |
1cab775c | 3961 | sched(dev, skb); |
5be78ee9 | 3962 | break; |
be4c9bad RD |
3963 | default: |
3964 | printk(KERN_ERR MOD "%s unexpected fw6 msg type %u\n", __func__, | |
3965 | rpl->type); | |
2f5b48c3 | 3966 | kfree_skb(skb); |
be4c9bad RD |
3967 | break; |
3968 | } | |
3969 | return 0; | |
3970 | } | |
3971 | ||
8da7e7a5 SW |
3972 | static int peer_abort_intr(struct c4iw_dev *dev, struct sk_buff *skb) |
3973 | { | |
3974 | struct cpl_abort_req_rss *req = cplhdr(skb); | |
3975 | struct c4iw_ep *ep; | |
3976 | struct tid_info *t = dev->rdev.lldi.tids; | |
3977 | unsigned int tid = GET_TID(req); | |
3978 | ||
3979 | ep = lookup_tid(t, tid); | |
14b92228 SW |
3980 | if (!ep) { |
3981 | printk(KERN_WARNING MOD | |
3982 | "Abort on non-existent endpoint, tid %d\n", tid); | |
3983 | kfree_skb(skb); | |
3984 | return 0; | |
3985 | } | |
7a2cea2a | 3986 | if (is_neg_adv(req->status)) { |
179d03bb H |
3987 | PDBG("%s Negative advice on abort- tid %u status %d (%s)\n", |
3988 | __func__, ep->hwtid, req->status, | |
3989 | neg_adv_str(req->status)); | |
3990 | ep->stats.abort_neg_adv++; | |
3991 | dev->rdev.stats.neg_adv++; | |
8da7e7a5 SW |
3992 | kfree_skb(skb); |
3993 | return 0; | |
3994 | } | |
3995 | PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid, | |
3996 | ep->com.state); | |
3997 | ||
3998 | /* | |
3999 | * Wake up any threads in rdma_init() or rdma_fini(). | |
7c0a33d6 VP |
4000 | * However, if we are on MPAv2 and want to retry with MPAv1 |
4001 | * then, don't wake up yet. | |
8da7e7a5 | 4002 | */ |
7c0a33d6 VP |
4003 | if (mpa_rev == 2 && !ep->tried_with_mpa_v1) { |
4004 | if (ep->com.state != MPA_REQ_SENT) | |
4005 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); | |
4006 | } else | |
4007 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); | |
8da7e7a5 SW |
4008 | sched(dev, skb); |
4009 | return 0; | |
4010 | } | |
4011 | ||
be4c9bad RD |
4012 | /* |
4013 | * Most upcalls from the T4 Core go to sched() to | |
4014 | * schedule the processing on a work queue. | |
4015 | */ | |
4016 | c4iw_handler_func c4iw_handlers[NUM_CPL_CMDS] = { | |
4017 | [CPL_ACT_ESTABLISH] = sched, | |
4018 | [CPL_ACT_OPEN_RPL] = sched, | |
4019 | [CPL_RX_DATA] = sched, | |
4020 | [CPL_ABORT_RPL_RSS] = sched, | |
4021 | [CPL_ABORT_RPL] = sched, | |
4022 | [CPL_PASS_OPEN_RPL] = sched, | |
4023 | [CPL_CLOSE_LISTSRV_RPL] = sched, | |
4024 | [CPL_PASS_ACCEPT_REQ] = sched, | |
4025 | [CPL_PASS_ESTABLISH] = sched, | |
4026 | [CPL_PEER_CLOSE] = sched, | |
4027 | [CPL_CLOSE_CON_RPL] = sched, | |
8da7e7a5 | 4028 | [CPL_ABORT_REQ_RSS] = peer_abort_intr, |
be4c9bad RD |
4029 | [CPL_RDMA_TERMINATE] = sched, |
4030 | [CPL_FW4_ACK] = sched, | |
4031 | [CPL_SET_TCB_RPL] = set_tcb_rpl, | |
1cab775c VP |
4032 | [CPL_FW6_MSG] = fw6_msg, |
4033 | [CPL_RX_PKT] = sched | |
be4c9bad RD |
4034 | }; |
4035 | ||
cfdda9d7 SW |
4036 | int __init c4iw_cm_init(void) |
4037 | { | |
be4c9bad | 4038 | spin_lock_init(&timeout_lock); |
cfdda9d7 SW |
4039 | skb_queue_head_init(&rxq); |
4040 | ||
4041 | workq = create_singlethread_workqueue("iw_cxgb4"); | |
4042 | if (!workq) | |
4043 | return -ENOMEM; | |
4044 | ||
cfdda9d7 SW |
4045 | return 0; |
4046 | } | |
4047 | ||
46c1376d | 4048 | void c4iw_cm_term(void) |
cfdda9d7 | 4049 | { |
be4c9bad | 4050 | WARN_ON(!list_empty(&timeout_list)); |
cfdda9d7 SW |
4051 | flush_workqueue(workq); |
4052 | destroy_workqueue(workq); | |
4053 | } |