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cfdda9d7 SW |
1 | /* |
2 | * Copyright (c) 2009-2010 Chelsio, Inc. All rights reserved. | |
3 | * | |
4 | * This software is available to you under a choice of one of two | |
5 | * licenses. You may choose to be licensed under the terms of the GNU | |
6 | * General Public License (GPL) Version 2, available from the file | |
7 | * COPYING in the main directory of this source tree, or the | |
8 | * OpenIB.org BSD license below: | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or | |
11 | * without modification, are permitted provided that the following | |
12 | * conditions are met: | |
13 | * | |
14 | * - Redistributions of source code must retain the above | |
15 | * copyright notice, this list of conditions and the following | |
16 | * disclaimer. | |
17 | * | |
18 | * - Redistributions in binary form must reproduce the above | |
19 | * copyright notice, this list of conditions and the following | |
20 | * disclaimer in the documentation and/or other materials | |
21 | * provided with the distribution. | |
22 | * | |
23 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
24 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
25 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
26 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
27 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
28 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
29 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
30 | * SOFTWARE. | |
31 | */ | |
32 | #include <linux/module.h> | |
33 | #include <linux/list.h> | |
34 | #include <linux/workqueue.h> | |
35 | #include <linux/skbuff.h> | |
36 | #include <linux/timer.h> | |
37 | #include <linux/notifier.h> | |
38 | #include <linux/inetdevice.h> | |
39 | #include <linux/ip.h> | |
40 | #include <linux/tcp.h> | |
1cab775c | 41 | #include <linux/if_vlan.h> |
cfdda9d7 SW |
42 | |
43 | #include <net/neighbour.h> | |
44 | #include <net/netevent.h> | |
45 | #include <net/route.h> | |
1cab775c | 46 | #include <net/tcp.h> |
830662f6 VP |
47 | #include <net/ip6_route.h> |
48 | #include <net/addrconf.h> | |
cfdda9d7 SW |
49 | |
50 | #include "iw_cxgb4.h" | |
51 | ||
52 | static char *states[] = { | |
53 | "idle", | |
54 | "listen", | |
55 | "connecting", | |
56 | "mpa_wait_req", | |
57 | "mpa_req_sent", | |
58 | "mpa_req_rcvd", | |
59 | "mpa_rep_sent", | |
60 | "fpdu_mode", | |
61 | "aborting", | |
62 | "closing", | |
63 | "moribund", | |
64 | "dead", | |
65 | NULL, | |
66 | }; | |
67 | ||
5be78ee9 VP |
68 | static int nocong; |
69 | module_param(nocong, int, 0644); | |
70 | MODULE_PARM_DESC(nocong, "Turn of congestion control (default=0)"); | |
71 | ||
72 | static int enable_ecn; | |
73 | module_param(enable_ecn, int, 0644); | |
74 | MODULE_PARM_DESC(enable_ecn, "Enable ECN (default=0/disabled)"); | |
75 | ||
b52fe09e | 76 | static int dack_mode = 1; |
ba6d3925 | 77 | module_param(dack_mode, int, 0644); |
b52fe09e | 78 | MODULE_PARM_DESC(dack_mode, "Delayed ack mode (default=1)"); |
ba6d3925 | 79 | |
be4c9bad RD |
80 | int c4iw_max_read_depth = 8; |
81 | module_param(c4iw_max_read_depth, int, 0644); | |
82 | MODULE_PARM_DESC(c4iw_max_read_depth, "Per-connection max ORD/IRD (default=8)"); | |
83 | ||
cfdda9d7 SW |
84 | static int enable_tcp_timestamps; |
85 | module_param(enable_tcp_timestamps, int, 0644); | |
86 | MODULE_PARM_DESC(enable_tcp_timestamps, "Enable tcp timestamps (default=0)"); | |
87 | ||
88 | static int enable_tcp_sack; | |
89 | module_param(enable_tcp_sack, int, 0644); | |
90 | MODULE_PARM_DESC(enable_tcp_sack, "Enable tcp SACK (default=0)"); | |
91 | ||
92 | static int enable_tcp_window_scaling = 1; | |
93 | module_param(enable_tcp_window_scaling, int, 0644); | |
94 | MODULE_PARM_DESC(enable_tcp_window_scaling, | |
95 | "Enable tcp window scaling (default=1)"); | |
96 | ||
97 | int c4iw_debug; | |
98 | module_param(c4iw_debug, int, 0644); | |
99 | MODULE_PARM_DESC(c4iw_debug, "Enable debug logging (default=0)"); | |
100 | ||
df2d5130 | 101 | static int peer2peer = 1; |
cfdda9d7 | 102 | module_param(peer2peer, int, 0644); |
df2d5130 | 103 | MODULE_PARM_DESC(peer2peer, "Support peer2peer ULPs (default=1)"); |
cfdda9d7 SW |
104 | |
105 | static int p2p_type = FW_RI_INIT_P2PTYPE_READ_REQ; | |
106 | module_param(p2p_type, int, 0644); | |
107 | MODULE_PARM_DESC(p2p_type, "RDMAP opcode to use for the RTR message: " | |
108 | "1=RDMA_READ 0=RDMA_WRITE (default 1)"); | |
109 | ||
110 | static int ep_timeout_secs = 60; | |
111 | module_param(ep_timeout_secs, int, 0644); | |
112 | MODULE_PARM_DESC(ep_timeout_secs, "CM Endpoint operation timeout " | |
113 | "in seconds (default=60)"); | |
114 | ||
115 | static int mpa_rev = 1; | |
116 | module_param(mpa_rev, int, 0644); | |
117 | MODULE_PARM_DESC(mpa_rev, "MPA Revision, 0 supports amso1100, " | |
d2fe99e8 KS |
118 | "1 is RFC0544 spec compliant, 2 is IETF MPA Peer Connect Draft" |
119 | " compliant (default=1)"); | |
cfdda9d7 SW |
120 | |
121 | static int markers_enabled; | |
122 | module_param(markers_enabled, int, 0644); | |
123 | MODULE_PARM_DESC(markers_enabled, "Enable MPA MARKERS (default(0)=disabled)"); | |
124 | ||
125 | static int crc_enabled = 1; | |
126 | module_param(crc_enabled, int, 0644); | |
127 | MODULE_PARM_DESC(crc_enabled, "Enable MPA CRC (default(1)=enabled)"); | |
128 | ||
129 | static int rcv_win = 256 * 1024; | |
130 | module_param(rcv_win, int, 0644); | |
131 | MODULE_PARM_DESC(rcv_win, "TCP receive window in bytes (default=256KB)"); | |
132 | ||
98ae68b7 | 133 | static int snd_win = 128 * 1024; |
cfdda9d7 | 134 | module_param(snd_win, int, 0644); |
98ae68b7 | 135 | MODULE_PARM_DESC(snd_win, "TCP send window in bytes (default=128KB)"); |
cfdda9d7 | 136 | |
cfdda9d7 | 137 | static struct workqueue_struct *workq; |
cfdda9d7 SW |
138 | |
139 | static struct sk_buff_head rxq; | |
cfdda9d7 SW |
140 | |
141 | static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp); | |
142 | static void ep_timeout(unsigned long arg); | |
143 | static void connect_reply_upcall(struct c4iw_ep *ep, int status); | |
144 | ||
be4c9bad RD |
145 | static LIST_HEAD(timeout_list); |
146 | static spinlock_t timeout_lock; | |
147 | ||
325abead VP |
148 | static void deref_qp(struct c4iw_ep *ep) |
149 | { | |
150 | c4iw_qp_rem_ref(&ep->com.qp->ibqp); | |
151 | clear_bit(QP_REFERENCED, &ep->com.flags); | |
152 | } | |
153 | ||
154 | static void ref_qp(struct c4iw_ep *ep) | |
155 | { | |
156 | set_bit(QP_REFERENCED, &ep->com.flags); | |
157 | c4iw_qp_add_ref(&ep->com.qp->ibqp); | |
158 | } | |
159 | ||
cfdda9d7 SW |
160 | static void start_ep_timer(struct c4iw_ep *ep) |
161 | { | |
162 | PDBG("%s ep %p\n", __func__, ep); | |
163 | if (timer_pending(&ep->timer)) { | |
1ec779cc VP |
164 | pr_err("%s timer already started! ep %p\n", |
165 | __func__, ep); | |
166 | return; | |
167 | } | |
168 | clear_bit(TIMEOUT, &ep->com.flags); | |
169 | c4iw_get_ep(&ep->com); | |
cfdda9d7 SW |
170 | ep->timer.expires = jiffies + ep_timeout_secs * HZ; |
171 | ep->timer.data = (unsigned long)ep; | |
172 | ep->timer.function = ep_timeout; | |
173 | add_timer(&ep->timer); | |
174 | } | |
175 | ||
b33bd0cb | 176 | static int stop_ep_timer(struct c4iw_ep *ep) |
cfdda9d7 | 177 | { |
1ec779cc | 178 | PDBG("%s ep %p stopping\n", __func__, ep); |
cfdda9d7 | 179 | del_timer_sync(&ep->timer); |
b33bd0cb | 180 | if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { |
1ec779cc | 181 | c4iw_put_ep(&ep->com); |
b33bd0cb SW |
182 | return 0; |
183 | } | |
184 | return 1; | |
cfdda9d7 SW |
185 | } |
186 | ||
187 | static int c4iw_l2t_send(struct c4iw_rdev *rdev, struct sk_buff *skb, | |
188 | struct l2t_entry *l2e) | |
189 | { | |
190 | int error = 0; | |
191 | ||
192 | if (c4iw_fatal_error(rdev)) { | |
193 | kfree_skb(skb); | |
194 | PDBG("%s - device in error state - dropping\n", __func__); | |
195 | return -EIO; | |
196 | } | |
197 | error = cxgb4_l2t_send(rdev->lldi.ports[0], skb, l2e); | |
198 | if (error < 0) | |
199 | kfree_skb(skb); | |
74594861 | 200 | return error < 0 ? error : 0; |
cfdda9d7 SW |
201 | } |
202 | ||
203 | int c4iw_ofld_send(struct c4iw_rdev *rdev, struct sk_buff *skb) | |
204 | { | |
205 | int error = 0; | |
206 | ||
207 | if (c4iw_fatal_error(rdev)) { | |
208 | kfree_skb(skb); | |
209 | PDBG("%s - device in error state - dropping\n", __func__); | |
210 | return -EIO; | |
211 | } | |
212 | error = cxgb4_ofld_send(rdev->lldi.ports[0], skb); | |
213 | if (error < 0) | |
214 | kfree_skb(skb); | |
74594861 | 215 | return error < 0 ? error : 0; |
cfdda9d7 SW |
216 | } |
217 | ||
218 | static void release_tid(struct c4iw_rdev *rdev, u32 hwtid, struct sk_buff *skb) | |
219 | { | |
220 | struct cpl_tid_release *req; | |
221 | ||
222 | skb = get_skb(skb, sizeof *req, GFP_KERNEL); | |
223 | if (!skb) | |
224 | return; | |
225 | req = (struct cpl_tid_release *) skb_put(skb, sizeof(*req)); | |
226 | INIT_TP_WR(req, hwtid); | |
227 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_TID_RELEASE, hwtid)); | |
228 | set_wr_txq(skb, CPL_PRIORITY_SETUP, 0); | |
229 | c4iw_ofld_send(rdev, skb); | |
230 | return; | |
231 | } | |
232 | ||
233 | static void set_emss(struct c4iw_ep *ep, u16 opt) | |
234 | { | |
235 | ep->emss = ep->com.dev->rdev.lldi.mtus[GET_TCPOPT_MSS(opt)] - 40; | |
236 | ep->mss = ep->emss; | |
237 | if (GET_TCPOPT_TSTAMP(opt)) | |
238 | ep->emss -= 12; | |
239 | if (ep->emss < 128) | |
240 | ep->emss = 128; | |
241 | PDBG("%s mss_idx %u mss %u emss=%u\n", __func__, GET_TCPOPT_MSS(opt), | |
242 | ep->mss, ep->emss); | |
243 | } | |
244 | ||
245 | static enum c4iw_ep_state state_read(struct c4iw_ep_common *epc) | |
246 | { | |
cfdda9d7 SW |
247 | enum c4iw_ep_state state; |
248 | ||
2f5b48c3 | 249 | mutex_lock(&epc->mutex); |
cfdda9d7 | 250 | state = epc->state; |
2f5b48c3 | 251 | mutex_unlock(&epc->mutex); |
cfdda9d7 SW |
252 | return state; |
253 | } | |
254 | ||
255 | static void __state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new) | |
256 | { | |
257 | epc->state = new; | |
258 | } | |
259 | ||
260 | static void state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new) | |
261 | { | |
2f5b48c3 | 262 | mutex_lock(&epc->mutex); |
cfdda9d7 SW |
263 | PDBG("%s - %s -> %s\n", __func__, states[epc->state], states[new]); |
264 | __state_set(epc, new); | |
2f5b48c3 | 265 | mutex_unlock(&epc->mutex); |
cfdda9d7 SW |
266 | return; |
267 | } | |
268 | ||
269 | static void *alloc_ep(int size, gfp_t gfp) | |
270 | { | |
271 | struct c4iw_ep_common *epc; | |
272 | ||
273 | epc = kzalloc(size, gfp); | |
274 | if (epc) { | |
275 | kref_init(&epc->kref); | |
2f5b48c3 | 276 | mutex_init(&epc->mutex); |
aadc4df3 | 277 | c4iw_init_wr_wait(&epc->wr_wait); |
cfdda9d7 SW |
278 | } |
279 | PDBG("%s alloc ep %p\n", __func__, epc); | |
280 | return epc; | |
281 | } | |
282 | ||
283 | void _c4iw_free_ep(struct kref *kref) | |
284 | { | |
285 | struct c4iw_ep *ep; | |
286 | ||
287 | ep = container_of(kref, struct c4iw_ep, com.kref); | |
288 | PDBG("%s ep %p state %s\n", __func__, ep, states[state_read(&ep->com)]); | |
325abead VP |
289 | if (test_bit(QP_REFERENCED, &ep->com.flags)) |
290 | deref_qp(ep); | |
cfdda9d7 | 291 | if (test_bit(RELEASE_RESOURCES, &ep->com.flags)) { |
fe7e0a4d | 292 | remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid); |
cfdda9d7 SW |
293 | cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid); |
294 | dst_release(ep->dst); | |
295 | cxgb4_l2t_release(ep->l2t); | |
296 | } | |
297 | kfree(ep); | |
298 | } | |
299 | ||
300 | static void release_ep_resources(struct c4iw_ep *ep) | |
301 | { | |
302 | set_bit(RELEASE_RESOURCES, &ep->com.flags); | |
303 | c4iw_put_ep(&ep->com); | |
304 | } | |
305 | ||
cfdda9d7 SW |
306 | static int status2errno(int status) |
307 | { | |
308 | switch (status) { | |
309 | case CPL_ERR_NONE: | |
310 | return 0; | |
311 | case CPL_ERR_CONN_RESET: | |
312 | return -ECONNRESET; | |
313 | case CPL_ERR_ARP_MISS: | |
314 | return -EHOSTUNREACH; | |
315 | case CPL_ERR_CONN_TIMEDOUT: | |
316 | return -ETIMEDOUT; | |
317 | case CPL_ERR_TCAM_FULL: | |
318 | return -ENOMEM; | |
319 | case CPL_ERR_CONN_EXIST: | |
320 | return -EADDRINUSE; | |
321 | default: | |
322 | return -EIO; | |
323 | } | |
324 | } | |
325 | ||
326 | /* | |
327 | * Try and reuse skbs already allocated... | |
328 | */ | |
329 | static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp) | |
330 | { | |
331 | if (skb && !skb_is_nonlinear(skb) && !skb_cloned(skb)) { | |
332 | skb_trim(skb, 0); | |
333 | skb_get(skb); | |
334 | skb_reset_transport_header(skb); | |
335 | } else { | |
336 | skb = alloc_skb(len, gfp); | |
337 | } | |
b38a0ad8 | 338 | t4_set_arp_err_handler(skb, NULL, NULL); |
cfdda9d7 SW |
339 | return skb; |
340 | } | |
341 | ||
830662f6 VP |
342 | static struct net_device *get_real_dev(struct net_device *egress_dev) |
343 | { | |
344 | struct net_device *phys_dev = egress_dev; | |
345 | if (egress_dev->priv_flags & IFF_802_1Q_VLAN) | |
346 | phys_dev = vlan_dev_real_dev(egress_dev); | |
347 | return phys_dev; | |
348 | } | |
349 | ||
350 | static int our_interface(struct c4iw_dev *dev, struct net_device *egress_dev) | |
351 | { | |
352 | int i; | |
353 | ||
354 | egress_dev = get_real_dev(egress_dev); | |
355 | for (i = 0; i < dev->rdev.lldi.nports; i++) | |
356 | if (dev->rdev.lldi.ports[i] == egress_dev) | |
357 | return 1; | |
358 | return 0; | |
359 | } | |
360 | ||
361 | static struct dst_entry *find_route6(struct c4iw_dev *dev, __u8 *local_ip, | |
362 | __u8 *peer_ip, __be16 local_port, | |
363 | __be16 peer_port, u8 tos, | |
364 | __u32 sin6_scope_id) | |
365 | { | |
366 | struct dst_entry *dst = NULL; | |
367 | ||
368 | if (IS_ENABLED(CONFIG_IPV6)) { | |
369 | struct flowi6 fl6; | |
370 | ||
371 | memset(&fl6, 0, sizeof(fl6)); | |
372 | memcpy(&fl6.daddr, peer_ip, 16); | |
373 | memcpy(&fl6.saddr, local_ip, 16); | |
374 | if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL) | |
375 | fl6.flowi6_oif = sin6_scope_id; | |
376 | dst = ip6_route_output(&init_net, NULL, &fl6); | |
377 | if (!dst) | |
378 | goto out; | |
379 | if (!our_interface(dev, ip6_dst_idev(dst)->dev) && | |
380 | !(ip6_dst_idev(dst)->dev->flags & IFF_LOOPBACK)) { | |
381 | dst_release(dst); | |
382 | dst = NULL; | |
383 | } | |
384 | } | |
385 | ||
386 | out: | |
387 | return dst; | |
388 | } | |
389 | ||
390 | static struct dst_entry *find_route(struct c4iw_dev *dev, __be32 local_ip, | |
cfdda9d7 SW |
391 | __be32 peer_ip, __be16 local_port, |
392 | __be16 peer_port, u8 tos) | |
393 | { | |
394 | struct rtable *rt; | |
31e4543d | 395 | struct flowi4 fl4; |
830662f6 | 396 | struct neighbour *n; |
78fbfd8a | 397 | |
31e4543d | 398 | rt = ip_route_output_ports(&init_net, &fl4, NULL, peer_ip, local_ip, |
78fbfd8a DM |
399 | peer_port, local_port, IPPROTO_TCP, |
400 | tos, 0); | |
b23dd4fe | 401 | if (IS_ERR(rt)) |
cfdda9d7 | 402 | return NULL; |
830662f6 VP |
403 | n = dst_neigh_lookup(&rt->dst, &peer_ip); |
404 | if (!n) | |
405 | return NULL; | |
f8e81908 SW |
406 | if (!our_interface(dev, n->dev) && |
407 | !(n->dev->flags & IFF_LOOPBACK)) { | |
830662f6 VP |
408 | dst_release(&rt->dst); |
409 | return NULL; | |
410 | } | |
411 | neigh_release(n); | |
412 | return &rt->dst; | |
cfdda9d7 SW |
413 | } |
414 | ||
415 | static void arp_failure_discard(void *handle, struct sk_buff *skb) | |
416 | { | |
417 | PDBG("%s c4iw_dev %p\n", __func__, handle); | |
418 | kfree_skb(skb); | |
419 | } | |
420 | ||
421 | /* | |
422 | * Handle an ARP failure for an active open. | |
423 | */ | |
424 | static void act_open_req_arp_failure(void *handle, struct sk_buff *skb) | |
425 | { | |
426 | printk(KERN_ERR MOD "ARP failure duing connect\n"); | |
427 | kfree_skb(skb); | |
428 | } | |
429 | ||
430 | /* | |
431 | * Handle an ARP failure for a CPL_ABORT_REQ. Change it into a no RST variant | |
432 | * and send it along. | |
433 | */ | |
434 | static void abort_arp_failure(void *handle, struct sk_buff *skb) | |
435 | { | |
436 | struct c4iw_rdev *rdev = handle; | |
437 | struct cpl_abort_req *req = cplhdr(skb); | |
438 | ||
439 | PDBG("%s rdev %p\n", __func__, rdev); | |
440 | req->cmd = CPL_ABORT_NO_RST; | |
441 | c4iw_ofld_send(rdev, skb); | |
442 | } | |
443 | ||
444 | static void send_flowc(struct c4iw_ep *ep, struct sk_buff *skb) | |
445 | { | |
446 | unsigned int flowclen = 80; | |
447 | struct fw_flowc_wr *flowc; | |
448 | int i; | |
449 | ||
450 | skb = get_skb(skb, flowclen, GFP_KERNEL); | |
451 | flowc = (struct fw_flowc_wr *)__skb_put(skb, flowclen); | |
452 | ||
453 | flowc->op_to_nparams = cpu_to_be32(FW_WR_OP(FW_FLOWC_WR) | | |
454 | FW_FLOWC_WR_NPARAMS(8)); | |
455 | flowc->flowid_len16 = cpu_to_be32(FW_WR_LEN16(DIV_ROUND_UP(flowclen, | |
456 | 16)) | FW_WR_FLOWID(ep->hwtid)); | |
457 | ||
458 | flowc->mnemval[0].mnemonic = FW_FLOWC_MNEM_PFNVFN; | |
94788657 | 459 | flowc->mnemval[0].val = cpu_to_be32(PCI_FUNC(ep->com.dev->rdev.lldi.pdev->devfn) << 8); |
cfdda9d7 SW |
460 | flowc->mnemval[1].mnemonic = FW_FLOWC_MNEM_CH; |
461 | flowc->mnemval[1].val = cpu_to_be32(ep->tx_chan); | |
462 | flowc->mnemval[2].mnemonic = FW_FLOWC_MNEM_PORT; | |
463 | flowc->mnemval[2].val = cpu_to_be32(ep->tx_chan); | |
464 | flowc->mnemval[3].mnemonic = FW_FLOWC_MNEM_IQID; | |
465 | flowc->mnemval[3].val = cpu_to_be32(ep->rss_qid); | |
466 | flowc->mnemval[4].mnemonic = FW_FLOWC_MNEM_SNDNXT; | |
467 | flowc->mnemval[4].val = cpu_to_be32(ep->snd_seq); | |
468 | flowc->mnemval[5].mnemonic = FW_FLOWC_MNEM_RCVNXT; | |
469 | flowc->mnemval[5].val = cpu_to_be32(ep->rcv_seq); | |
470 | flowc->mnemval[6].mnemonic = FW_FLOWC_MNEM_SNDBUF; | |
471 | flowc->mnemval[6].val = cpu_to_be32(snd_win); | |
472 | flowc->mnemval[7].mnemonic = FW_FLOWC_MNEM_MSS; | |
473 | flowc->mnemval[7].val = cpu_to_be32(ep->emss); | |
474 | /* Pad WR to 16 byte boundary */ | |
475 | flowc->mnemval[8].mnemonic = 0; | |
476 | flowc->mnemval[8].val = 0; | |
477 | for (i = 0; i < 9; i++) { | |
478 | flowc->mnemval[i].r4[0] = 0; | |
479 | flowc->mnemval[i].r4[1] = 0; | |
480 | flowc->mnemval[i].r4[2] = 0; | |
481 | } | |
482 | ||
483 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
484 | c4iw_ofld_send(&ep->com.dev->rdev, skb); | |
485 | } | |
486 | ||
487 | static int send_halfclose(struct c4iw_ep *ep, gfp_t gfp) | |
488 | { | |
489 | struct cpl_close_con_req *req; | |
490 | struct sk_buff *skb; | |
491 | int wrlen = roundup(sizeof *req, 16); | |
492 | ||
493 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
494 | skb = get_skb(NULL, wrlen, gfp); | |
495 | if (!skb) { | |
496 | printk(KERN_ERR MOD "%s - failed to alloc skb\n", __func__); | |
497 | return -ENOMEM; | |
498 | } | |
499 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
500 | t4_set_arp_err_handler(skb, NULL, arp_failure_discard); | |
501 | req = (struct cpl_close_con_req *) skb_put(skb, wrlen); | |
502 | memset(req, 0, wrlen); | |
503 | INIT_TP_WR(req, ep->hwtid); | |
504 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, | |
505 | ep->hwtid)); | |
506 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); | |
507 | } | |
508 | ||
509 | static int send_abort(struct c4iw_ep *ep, struct sk_buff *skb, gfp_t gfp) | |
510 | { | |
511 | struct cpl_abort_req *req; | |
512 | int wrlen = roundup(sizeof *req, 16); | |
513 | ||
514 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
515 | skb = get_skb(skb, wrlen, gfp); | |
516 | if (!skb) { | |
517 | printk(KERN_ERR MOD "%s - failed to alloc skb.\n", | |
518 | __func__); | |
519 | return -ENOMEM; | |
520 | } | |
521 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
522 | t4_set_arp_err_handler(skb, &ep->com.dev->rdev, abort_arp_failure); | |
523 | req = (struct cpl_abort_req *) skb_put(skb, wrlen); | |
524 | memset(req, 0, wrlen); | |
525 | INIT_TP_WR(req, ep->hwtid); | |
526 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_REQ, ep->hwtid)); | |
527 | req->cmd = CPL_ABORT_SEND_RST; | |
528 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); | |
529 | } | |
530 | ||
531 | static int send_connect(struct c4iw_ep *ep) | |
532 | { | |
533 | struct cpl_act_open_req *req; | |
f079af7a | 534 | struct cpl_t5_act_open_req *t5_req; |
830662f6 VP |
535 | struct cpl_act_open_req6 *req6; |
536 | struct cpl_t5_act_open_req6 *t5_req6; | |
cfdda9d7 SW |
537 | struct sk_buff *skb; |
538 | u64 opt0; | |
539 | u32 opt2; | |
540 | unsigned int mtu_idx; | |
541 | int wscale; | |
830662f6 VP |
542 | int wrlen; |
543 | int sizev4 = is_t4(ep->com.dev->rdev.lldi.adapter_type) ? | |
544 | sizeof(struct cpl_act_open_req) : | |
545 | sizeof(struct cpl_t5_act_open_req); | |
546 | int sizev6 = is_t4(ep->com.dev->rdev.lldi.adapter_type) ? | |
547 | sizeof(struct cpl_act_open_req6) : | |
548 | sizeof(struct cpl_t5_act_open_req6); | |
549 | struct sockaddr_in *la = (struct sockaddr_in *)&ep->com.local_addr; | |
550 | struct sockaddr_in *ra = (struct sockaddr_in *)&ep->com.remote_addr; | |
551 | struct sockaddr_in6 *la6 = (struct sockaddr_in6 *)&ep->com.local_addr; | |
552 | struct sockaddr_in6 *ra6 = (struct sockaddr_in6 *)&ep->com.remote_addr; | |
553 | ||
554 | wrlen = (ep->com.remote_addr.ss_family == AF_INET) ? | |
555 | roundup(sizev4, 16) : | |
556 | roundup(sizev6, 16); | |
cfdda9d7 SW |
557 | |
558 | PDBG("%s ep %p atid %u\n", __func__, ep, ep->atid); | |
559 | ||
560 | skb = get_skb(NULL, wrlen, GFP_KERNEL); | |
561 | if (!skb) { | |
562 | printk(KERN_ERR MOD "%s - failed to alloc skb.\n", | |
563 | __func__); | |
564 | return -ENOMEM; | |
565 | } | |
d4f1a5c6 | 566 | set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx); |
cfdda9d7 SW |
567 | |
568 | cxgb4_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx); | |
569 | wscale = compute_wscale(rcv_win); | |
5be78ee9 VP |
570 | opt0 = (nocong ? NO_CONG(1) : 0) | |
571 | KEEP_ALIVE(1) | | |
ba6d3925 | 572 | DELACK(1) | |
cfdda9d7 SW |
573 | WND_SCALE(wscale) | |
574 | MSS_IDX(mtu_idx) | | |
575 | L2T_IDX(ep->l2t->idx) | | |
576 | TX_CHAN(ep->tx_chan) | | |
577 | SMAC_SEL(ep->smac_idx) | | |
578 | DSCP(ep->tos) | | |
b48f3b9c | 579 | ULP_MODE(ULP_MODE_TCPDDP) | |
cfdda9d7 SW |
580 | RCV_BUFSIZ(rcv_win>>10); |
581 | opt2 = RX_CHANNEL(0) | | |
5be78ee9 | 582 | CCTRL_ECN(enable_ecn) | |
cfdda9d7 SW |
583 | RSS_QUEUE_VALID | RSS_QUEUE(ep->rss_qid); |
584 | if (enable_tcp_timestamps) | |
585 | opt2 |= TSTAMPS_EN(1); | |
586 | if (enable_tcp_sack) | |
587 | opt2 |= SACK_EN(1); | |
588 | if (wscale && enable_tcp_window_scaling) | |
589 | opt2 |= WND_SCALE_EN(1); | |
590 | t4_set_arp_err_handler(skb, NULL, act_open_req_arp_failure); | |
591 | ||
f079af7a | 592 | if (is_t4(ep->com.dev->rdev.lldi.adapter_type)) { |
830662f6 VP |
593 | if (ep->com.remote_addr.ss_family == AF_INET) { |
594 | req = (struct cpl_act_open_req *) skb_put(skb, wrlen); | |
595 | INIT_TP_WR(req, 0); | |
596 | OPCODE_TID(req) = cpu_to_be32( | |
597 | MK_OPCODE_TID(CPL_ACT_OPEN_REQ, | |
598 | ((ep->rss_qid << 14) | ep->atid))); | |
599 | req->local_port = la->sin_port; | |
600 | req->peer_port = ra->sin_port; | |
601 | req->local_ip = la->sin_addr.s_addr; | |
602 | req->peer_ip = ra->sin_addr.s_addr; | |
603 | req->opt0 = cpu_to_be64(opt0); | |
41b4f86c KS |
604 | req->params = cpu_to_be32(cxgb4_select_ntuple( |
605 | ep->com.dev->rdev.lldi.ports[0], | |
606 | ep->l2t)); | |
830662f6 VP |
607 | req->opt2 = cpu_to_be32(opt2); |
608 | } else { | |
609 | req6 = (struct cpl_act_open_req6 *)skb_put(skb, wrlen); | |
610 | ||
611 | INIT_TP_WR(req6, 0); | |
612 | OPCODE_TID(req6) = cpu_to_be32( | |
613 | MK_OPCODE_TID(CPL_ACT_OPEN_REQ6, | |
614 | ((ep->rss_qid<<14)|ep->atid))); | |
615 | req6->local_port = la6->sin6_port; | |
616 | req6->peer_port = ra6->sin6_port; | |
617 | req6->local_ip_hi = *((__be64 *) | |
618 | (la6->sin6_addr.s6_addr)); | |
619 | req6->local_ip_lo = *((__be64 *) | |
620 | (la6->sin6_addr.s6_addr + 8)); | |
621 | req6->peer_ip_hi = *((__be64 *) | |
622 | (ra6->sin6_addr.s6_addr)); | |
623 | req6->peer_ip_lo = *((__be64 *) | |
624 | (ra6->sin6_addr.s6_addr + 8)); | |
625 | req6->opt0 = cpu_to_be64(opt0); | |
41b4f86c KS |
626 | req6->params = cpu_to_be32(cxgb4_select_ntuple( |
627 | ep->com.dev->rdev.lldi.ports[0], | |
628 | ep->l2t)); | |
830662f6 VP |
629 | req6->opt2 = cpu_to_be32(opt2); |
630 | } | |
f079af7a | 631 | } else { |
830662f6 VP |
632 | if (ep->com.remote_addr.ss_family == AF_INET) { |
633 | t5_req = (struct cpl_t5_act_open_req *) | |
634 | skb_put(skb, wrlen); | |
635 | INIT_TP_WR(t5_req, 0); | |
636 | OPCODE_TID(t5_req) = cpu_to_be32( | |
f079af7a VP |
637 | MK_OPCODE_TID(CPL_ACT_OPEN_REQ, |
638 | ((ep->rss_qid << 14) | ep->atid))); | |
830662f6 VP |
639 | t5_req->local_port = la->sin_port; |
640 | t5_req->peer_port = ra->sin_port; | |
641 | t5_req->local_ip = la->sin_addr.s_addr; | |
642 | t5_req->peer_ip = ra->sin_addr.s_addr; | |
643 | t5_req->opt0 = cpu_to_be64(opt0); | |
644 | t5_req->params = cpu_to_be64(V_FILTER_TUPLE( | |
41b4f86c KS |
645 | cxgb4_select_ntuple( |
646 | ep->com.dev->rdev.lldi.ports[0], | |
647 | ep->l2t))); | |
830662f6 VP |
648 | t5_req->opt2 = cpu_to_be32(opt2); |
649 | } else { | |
650 | t5_req6 = (struct cpl_t5_act_open_req6 *) | |
651 | skb_put(skb, wrlen); | |
652 | INIT_TP_WR(t5_req6, 0); | |
653 | OPCODE_TID(t5_req6) = cpu_to_be32( | |
654 | MK_OPCODE_TID(CPL_ACT_OPEN_REQ6, | |
655 | ((ep->rss_qid<<14)|ep->atid))); | |
656 | t5_req6->local_port = la6->sin6_port; | |
657 | t5_req6->peer_port = ra6->sin6_port; | |
658 | t5_req6->local_ip_hi = *((__be64 *) | |
659 | (la6->sin6_addr.s6_addr)); | |
660 | t5_req6->local_ip_lo = *((__be64 *) | |
661 | (la6->sin6_addr.s6_addr + 8)); | |
662 | t5_req6->peer_ip_hi = *((__be64 *) | |
663 | (ra6->sin6_addr.s6_addr)); | |
664 | t5_req6->peer_ip_lo = *((__be64 *) | |
665 | (ra6->sin6_addr.s6_addr + 8)); | |
666 | t5_req6->opt0 = cpu_to_be64(opt0); | |
667 | t5_req6->params = (__force __be64)cpu_to_be32( | |
41b4f86c KS |
668 | cxgb4_select_ntuple( |
669 | ep->com.dev->rdev.lldi.ports[0], | |
670 | ep->l2t)); | |
830662f6 VP |
671 | t5_req6->opt2 = cpu_to_be32(opt2); |
672 | } | |
f079af7a VP |
673 | } |
674 | ||
793dad94 | 675 | set_bit(ACT_OPEN_REQ, &ep->com.history); |
cfdda9d7 SW |
676 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
677 | } | |
678 | ||
d2fe99e8 KS |
679 | static void send_mpa_req(struct c4iw_ep *ep, struct sk_buff *skb, |
680 | u8 mpa_rev_to_use) | |
cfdda9d7 SW |
681 | { |
682 | int mpalen, wrlen; | |
683 | struct fw_ofld_tx_data_wr *req; | |
684 | struct mpa_message *mpa; | |
d2fe99e8 | 685 | struct mpa_v2_conn_params mpa_v2_params; |
cfdda9d7 SW |
686 | |
687 | PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); | |
688 | ||
689 | BUG_ON(skb_cloned(skb)); | |
690 | ||
691 | mpalen = sizeof(*mpa) + ep->plen; | |
d2fe99e8 KS |
692 | if (mpa_rev_to_use == 2) |
693 | mpalen += sizeof(struct mpa_v2_conn_params); | |
cfdda9d7 SW |
694 | wrlen = roundup(mpalen + sizeof *req, 16); |
695 | skb = get_skb(skb, wrlen, GFP_KERNEL); | |
696 | if (!skb) { | |
697 | connect_reply_upcall(ep, -ENOMEM); | |
698 | return; | |
699 | } | |
700 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
701 | ||
702 | req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen); | |
703 | memset(req, 0, wrlen); | |
704 | req->op_to_immdlen = cpu_to_be32( | |
705 | FW_WR_OP(FW_OFLD_TX_DATA_WR) | | |
706 | FW_WR_COMPL(1) | | |
707 | FW_WR_IMMDLEN(mpalen)); | |
708 | req->flowid_len16 = cpu_to_be32( | |
709 | FW_WR_FLOWID(ep->hwtid) | | |
710 | FW_WR_LEN16(wrlen >> 4)); | |
711 | req->plen = cpu_to_be32(mpalen); | |
712 | req->tunnel_to_proxy = cpu_to_be32( | |
713 | FW_OFLD_TX_DATA_WR_FLUSH(1) | | |
714 | FW_OFLD_TX_DATA_WR_SHOVE(1)); | |
715 | ||
716 | mpa = (struct mpa_message *)(req + 1); | |
717 | memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)); | |
718 | mpa->flags = (crc_enabled ? MPA_CRC : 0) | | |
d2fe99e8 KS |
719 | (markers_enabled ? MPA_MARKERS : 0) | |
720 | (mpa_rev_to_use == 2 ? MPA_ENHANCED_RDMA_CONN : 0); | |
cfdda9d7 | 721 | mpa->private_data_size = htons(ep->plen); |
d2fe99e8 | 722 | mpa->revision = mpa_rev_to_use; |
01b225e1 | 723 | if (mpa_rev_to_use == 1) { |
d2fe99e8 | 724 | ep->tried_with_mpa_v1 = 1; |
01b225e1 KS |
725 | ep->retry_with_mpa_v1 = 0; |
726 | } | |
d2fe99e8 KS |
727 | |
728 | if (mpa_rev_to_use == 2) { | |
f747c34a RD |
729 | mpa->private_data_size = htons(ntohs(mpa->private_data_size) + |
730 | sizeof (struct mpa_v2_conn_params)); | |
d2fe99e8 KS |
731 | mpa_v2_params.ird = htons((u16)ep->ird); |
732 | mpa_v2_params.ord = htons((u16)ep->ord); | |
733 | ||
734 | if (peer2peer) { | |
735 | mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); | |
736 | if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) | |
737 | mpa_v2_params.ord |= | |
738 | htons(MPA_V2_RDMA_WRITE_RTR); | |
739 | else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) | |
740 | mpa_v2_params.ord |= | |
741 | htons(MPA_V2_RDMA_READ_RTR); | |
742 | } | |
743 | memcpy(mpa->private_data, &mpa_v2_params, | |
744 | sizeof(struct mpa_v2_conn_params)); | |
cfdda9d7 | 745 | |
d2fe99e8 KS |
746 | if (ep->plen) |
747 | memcpy(mpa->private_data + | |
748 | sizeof(struct mpa_v2_conn_params), | |
749 | ep->mpa_pkt + sizeof(*mpa), ep->plen); | |
750 | } else | |
751 | if (ep->plen) | |
752 | memcpy(mpa->private_data, | |
753 | ep->mpa_pkt + sizeof(*mpa), ep->plen); | |
cfdda9d7 SW |
754 | |
755 | /* | |
756 | * Reference the mpa skb. This ensures the data area | |
757 | * will remain in memory until the hw acks the tx. | |
758 | * Function fw4_ack() will deref it. | |
759 | */ | |
760 | skb_get(skb); | |
761 | t4_set_arp_err_handler(skb, NULL, arp_failure_discard); | |
762 | BUG_ON(ep->mpa_skb); | |
763 | ep->mpa_skb = skb; | |
764 | c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); | |
765 | start_ep_timer(ep); | |
a7db89eb | 766 | __state_set(&ep->com, MPA_REQ_SENT); |
cfdda9d7 | 767 | ep->mpa_attr.initiator = 1; |
9c88aa00 | 768 | ep->snd_seq += mpalen; |
cfdda9d7 SW |
769 | return; |
770 | } | |
771 | ||
772 | static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen) | |
773 | { | |
774 | int mpalen, wrlen; | |
775 | struct fw_ofld_tx_data_wr *req; | |
776 | struct mpa_message *mpa; | |
777 | struct sk_buff *skb; | |
d2fe99e8 | 778 | struct mpa_v2_conn_params mpa_v2_params; |
cfdda9d7 SW |
779 | |
780 | PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); | |
781 | ||
782 | mpalen = sizeof(*mpa) + plen; | |
d2fe99e8 KS |
783 | if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) |
784 | mpalen += sizeof(struct mpa_v2_conn_params); | |
cfdda9d7 SW |
785 | wrlen = roundup(mpalen + sizeof *req, 16); |
786 | ||
787 | skb = get_skb(NULL, wrlen, GFP_KERNEL); | |
788 | if (!skb) { | |
789 | printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__); | |
790 | return -ENOMEM; | |
791 | } | |
792 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
793 | ||
794 | req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen); | |
795 | memset(req, 0, wrlen); | |
796 | req->op_to_immdlen = cpu_to_be32( | |
797 | FW_WR_OP(FW_OFLD_TX_DATA_WR) | | |
798 | FW_WR_COMPL(1) | | |
799 | FW_WR_IMMDLEN(mpalen)); | |
800 | req->flowid_len16 = cpu_to_be32( | |
801 | FW_WR_FLOWID(ep->hwtid) | | |
802 | FW_WR_LEN16(wrlen >> 4)); | |
803 | req->plen = cpu_to_be32(mpalen); | |
804 | req->tunnel_to_proxy = cpu_to_be32( | |
805 | FW_OFLD_TX_DATA_WR_FLUSH(1) | | |
806 | FW_OFLD_TX_DATA_WR_SHOVE(1)); | |
807 | ||
808 | mpa = (struct mpa_message *)(req + 1); | |
809 | memset(mpa, 0, sizeof(*mpa)); | |
810 | memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); | |
811 | mpa->flags = MPA_REJECT; | |
fe7e0a4d | 812 | mpa->revision = ep->mpa_attr.version; |
cfdda9d7 | 813 | mpa->private_data_size = htons(plen); |
d2fe99e8 KS |
814 | |
815 | if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { | |
816 | mpa->flags |= MPA_ENHANCED_RDMA_CONN; | |
f747c34a RD |
817 | mpa->private_data_size = htons(ntohs(mpa->private_data_size) + |
818 | sizeof (struct mpa_v2_conn_params)); | |
d2fe99e8 KS |
819 | mpa_v2_params.ird = htons(((u16)ep->ird) | |
820 | (peer2peer ? MPA_V2_PEER2PEER_MODEL : | |
821 | 0)); | |
822 | mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ? | |
823 | (p2p_type == | |
824 | FW_RI_INIT_P2PTYPE_RDMA_WRITE ? | |
825 | MPA_V2_RDMA_WRITE_RTR : p2p_type == | |
826 | FW_RI_INIT_P2PTYPE_READ_REQ ? | |
827 | MPA_V2_RDMA_READ_RTR : 0) : 0)); | |
828 | memcpy(mpa->private_data, &mpa_v2_params, | |
829 | sizeof(struct mpa_v2_conn_params)); | |
830 | ||
831 | if (ep->plen) | |
832 | memcpy(mpa->private_data + | |
833 | sizeof(struct mpa_v2_conn_params), pdata, plen); | |
834 | } else | |
835 | if (plen) | |
836 | memcpy(mpa->private_data, pdata, plen); | |
cfdda9d7 SW |
837 | |
838 | /* | |
839 | * Reference the mpa skb again. This ensures the data area | |
840 | * will remain in memory until the hw acks the tx. | |
841 | * Function fw4_ack() will deref it. | |
842 | */ | |
843 | skb_get(skb); | |
844 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
845 | t4_set_arp_err_handler(skb, NULL, arp_failure_discard); | |
846 | BUG_ON(ep->mpa_skb); | |
847 | ep->mpa_skb = skb; | |
9c88aa00 | 848 | ep->snd_seq += mpalen; |
cfdda9d7 SW |
849 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
850 | } | |
851 | ||
852 | static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen) | |
853 | { | |
854 | int mpalen, wrlen; | |
855 | struct fw_ofld_tx_data_wr *req; | |
856 | struct mpa_message *mpa; | |
857 | struct sk_buff *skb; | |
d2fe99e8 | 858 | struct mpa_v2_conn_params mpa_v2_params; |
cfdda9d7 SW |
859 | |
860 | PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); | |
861 | ||
862 | mpalen = sizeof(*mpa) + plen; | |
d2fe99e8 KS |
863 | if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) |
864 | mpalen += sizeof(struct mpa_v2_conn_params); | |
cfdda9d7 SW |
865 | wrlen = roundup(mpalen + sizeof *req, 16); |
866 | ||
867 | skb = get_skb(NULL, wrlen, GFP_KERNEL); | |
868 | if (!skb) { | |
869 | printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__); | |
870 | return -ENOMEM; | |
871 | } | |
872 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
873 | ||
874 | req = (struct fw_ofld_tx_data_wr *) skb_put(skb, wrlen); | |
875 | memset(req, 0, wrlen); | |
876 | req->op_to_immdlen = cpu_to_be32( | |
877 | FW_WR_OP(FW_OFLD_TX_DATA_WR) | | |
878 | FW_WR_COMPL(1) | | |
879 | FW_WR_IMMDLEN(mpalen)); | |
880 | req->flowid_len16 = cpu_to_be32( | |
881 | FW_WR_FLOWID(ep->hwtid) | | |
882 | FW_WR_LEN16(wrlen >> 4)); | |
883 | req->plen = cpu_to_be32(mpalen); | |
884 | req->tunnel_to_proxy = cpu_to_be32( | |
885 | FW_OFLD_TX_DATA_WR_FLUSH(1) | | |
886 | FW_OFLD_TX_DATA_WR_SHOVE(1)); | |
887 | ||
888 | mpa = (struct mpa_message *)(req + 1); | |
889 | memset(mpa, 0, sizeof(*mpa)); | |
890 | memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); | |
891 | mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) | | |
892 | (markers_enabled ? MPA_MARKERS : 0); | |
d2fe99e8 | 893 | mpa->revision = ep->mpa_attr.version; |
cfdda9d7 | 894 | mpa->private_data_size = htons(plen); |
d2fe99e8 KS |
895 | |
896 | if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { | |
897 | mpa->flags |= MPA_ENHANCED_RDMA_CONN; | |
f747c34a RD |
898 | mpa->private_data_size = htons(ntohs(mpa->private_data_size) + |
899 | sizeof (struct mpa_v2_conn_params)); | |
d2fe99e8 KS |
900 | mpa_v2_params.ird = htons((u16)ep->ird); |
901 | mpa_v2_params.ord = htons((u16)ep->ord); | |
902 | if (peer2peer && (ep->mpa_attr.p2p_type != | |
903 | FW_RI_INIT_P2PTYPE_DISABLED)) { | |
904 | mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); | |
905 | ||
906 | if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) | |
907 | mpa_v2_params.ord |= | |
908 | htons(MPA_V2_RDMA_WRITE_RTR); | |
909 | else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) | |
910 | mpa_v2_params.ord |= | |
911 | htons(MPA_V2_RDMA_READ_RTR); | |
912 | } | |
913 | ||
914 | memcpy(mpa->private_data, &mpa_v2_params, | |
915 | sizeof(struct mpa_v2_conn_params)); | |
916 | ||
917 | if (ep->plen) | |
918 | memcpy(mpa->private_data + | |
919 | sizeof(struct mpa_v2_conn_params), pdata, plen); | |
920 | } else | |
921 | if (plen) | |
922 | memcpy(mpa->private_data, pdata, plen); | |
cfdda9d7 SW |
923 | |
924 | /* | |
925 | * Reference the mpa skb. This ensures the data area | |
926 | * will remain in memory until the hw acks the tx. | |
927 | * Function fw4_ack() will deref it. | |
928 | */ | |
929 | skb_get(skb); | |
930 | t4_set_arp_err_handler(skb, NULL, arp_failure_discard); | |
931 | ep->mpa_skb = skb; | |
a7db89eb | 932 | __state_set(&ep->com, MPA_REP_SENT); |
9c88aa00 | 933 | ep->snd_seq += mpalen; |
cfdda9d7 SW |
934 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
935 | } | |
936 | ||
937 | static int act_establish(struct c4iw_dev *dev, struct sk_buff *skb) | |
938 | { | |
939 | struct c4iw_ep *ep; | |
940 | struct cpl_act_establish *req = cplhdr(skb); | |
941 | unsigned int tid = GET_TID(req); | |
942 | unsigned int atid = GET_TID_TID(ntohl(req->tos_atid)); | |
943 | struct tid_info *t = dev->rdev.lldi.tids; | |
944 | ||
945 | ep = lookup_atid(t, atid); | |
946 | ||
947 | PDBG("%s ep %p tid %u snd_isn %u rcv_isn %u\n", __func__, ep, tid, | |
948 | be32_to_cpu(req->snd_isn), be32_to_cpu(req->rcv_isn)); | |
949 | ||
a7db89eb | 950 | mutex_lock(&ep->com.mutex); |
cfdda9d7 SW |
951 | dst_confirm(ep->dst); |
952 | ||
953 | /* setup the hwtid for this connection */ | |
954 | ep->hwtid = tid; | |
955 | cxgb4_insert_tid(t, ep, tid); | |
793dad94 | 956 | insert_handle(dev, &dev->hwtid_idr, ep, ep->hwtid); |
cfdda9d7 SW |
957 | |
958 | ep->snd_seq = be32_to_cpu(req->snd_isn); | |
959 | ep->rcv_seq = be32_to_cpu(req->rcv_isn); | |
960 | ||
961 | set_emss(ep, ntohs(req->tcp_opt)); | |
962 | ||
963 | /* dealloc the atid */ | |
793dad94 | 964 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, atid); |
cfdda9d7 | 965 | cxgb4_free_atid(t, atid); |
793dad94 | 966 | set_bit(ACT_ESTAB, &ep->com.history); |
cfdda9d7 SW |
967 | |
968 | /* start MPA negotiation */ | |
969 | send_flowc(ep, NULL); | |
d2fe99e8 KS |
970 | if (ep->retry_with_mpa_v1) |
971 | send_mpa_req(ep, skb, 1); | |
972 | else | |
973 | send_mpa_req(ep, skb, mpa_rev); | |
a7db89eb | 974 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
975 | return 0; |
976 | } | |
977 | ||
be13b2df | 978 | static void close_complete_upcall(struct c4iw_ep *ep, int status) |
cfdda9d7 SW |
979 | { |
980 | struct iw_cm_event event; | |
981 | ||
982 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
983 | memset(&event, 0, sizeof(event)); | |
984 | event.event = IW_CM_EVENT_CLOSE; | |
be13b2df | 985 | event.status = status; |
cfdda9d7 SW |
986 | if (ep->com.cm_id) { |
987 | PDBG("close complete delivered ep %p cm_id %p tid %u\n", | |
988 | ep, ep->com.cm_id, ep->hwtid); | |
989 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
990 | ep->com.cm_id->rem_ref(ep->com.cm_id); | |
991 | ep->com.cm_id = NULL; | |
793dad94 | 992 | set_bit(CLOSE_UPCALL, &ep->com.history); |
cfdda9d7 SW |
993 | } |
994 | } | |
995 | ||
996 | static int abort_connection(struct c4iw_ep *ep, struct sk_buff *skb, gfp_t gfp) | |
997 | { | |
998 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
cfdda9d7 | 999 | state_set(&ep->com, ABORTING); |
793dad94 | 1000 | set_bit(ABORT_CONN, &ep->com.history); |
cfdda9d7 SW |
1001 | return send_abort(ep, skb, gfp); |
1002 | } | |
1003 | ||
1004 | static void peer_close_upcall(struct c4iw_ep *ep) | |
1005 | { | |
1006 | struct iw_cm_event event; | |
1007 | ||
1008 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1009 | memset(&event, 0, sizeof(event)); | |
1010 | event.event = IW_CM_EVENT_DISCONNECT; | |
1011 | if (ep->com.cm_id) { | |
1012 | PDBG("peer close delivered ep %p cm_id %p tid %u\n", | |
1013 | ep, ep->com.cm_id, ep->hwtid); | |
1014 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
793dad94 | 1015 | set_bit(DISCONN_UPCALL, &ep->com.history); |
cfdda9d7 SW |
1016 | } |
1017 | } | |
1018 | ||
1019 | static void peer_abort_upcall(struct c4iw_ep *ep) | |
1020 | { | |
1021 | struct iw_cm_event event; | |
1022 | ||
1023 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1024 | memset(&event, 0, sizeof(event)); | |
1025 | event.event = IW_CM_EVENT_CLOSE; | |
1026 | event.status = -ECONNRESET; | |
1027 | if (ep->com.cm_id) { | |
1028 | PDBG("abort delivered ep %p cm_id %p tid %u\n", ep, | |
1029 | ep->com.cm_id, ep->hwtid); | |
1030 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
1031 | ep->com.cm_id->rem_ref(ep->com.cm_id); | |
1032 | ep->com.cm_id = NULL; | |
793dad94 | 1033 | set_bit(ABORT_UPCALL, &ep->com.history); |
cfdda9d7 SW |
1034 | } |
1035 | } | |
1036 | ||
1037 | static void connect_reply_upcall(struct c4iw_ep *ep, int status) | |
1038 | { | |
1039 | struct iw_cm_event event; | |
1040 | ||
1041 | PDBG("%s ep %p tid %u status %d\n", __func__, ep, ep->hwtid, status); | |
1042 | memset(&event, 0, sizeof(event)); | |
1043 | event.event = IW_CM_EVENT_CONNECT_REPLY; | |
1044 | event.status = status; | |
24d44a39 SW |
1045 | memcpy(&event.local_addr, &ep->com.local_addr, |
1046 | sizeof(ep->com.local_addr)); | |
1047 | memcpy(&event.remote_addr, &ep->com.remote_addr, | |
1048 | sizeof(ep->com.remote_addr)); | |
cfdda9d7 SW |
1049 | |
1050 | if ((status == 0) || (status == -ECONNREFUSED)) { | |
d2fe99e8 KS |
1051 | if (!ep->tried_with_mpa_v1) { |
1052 | /* this means MPA_v2 is used */ | |
1053 | event.private_data_len = ep->plen - | |
1054 | sizeof(struct mpa_v2_conn_params); | |
1055 | event.private_data = ep->mpa_pkt + | |
1056 | sizeof(struct mpa_message) + | |
1057 | sizeof(struct mpa_v2_conn_params); | |
1058 | } else { | |
1059 | /* this means MPA_v1 is used */ | |
1060 | event.private_data_len = ep->plen; | |
1061 | event.private_data = ep->mpa_pkt + | |
1062 | sizeof(struct mpa_message); | |
1063 | } | |
cfdda9d7 | 1064 | } |
85963e4c RD |
1065 | |
1066 | PDBG("%s ep %p tid %u status %d\n", __func__, ep, | |
1067 | ep->hwtid, status); | |
793dad94 | 1068 | set_bit(CONN_RPL_UPCALL, &ep->com.history); |
85963e4c RD |
1069 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); |
1070 | ||
cfdda9d7 SW |
1071 | if (status < 0) { |
1072 | ep->com.cm_id->rem_ref(ep->com.cm_id); | |
1073 | ep->com.cm_id = NULL; | |
cfdda9d7 SW |
1074 | } |
1075 | } | |
1076 | ||
be13b2df | 1077 | static int connect_request_upcall(struct c4iw_ep *ep) |
cfdda9d7 SW |
1078 | { |
1079 | struct iw_cm_event event; | |
be13b2df | 1080 | int ret; |
cfdda9d7 SW |
1081 | |
1082 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1083 | memset(&event, 0, sizeof(event)); | |
1084 | event.event = IW_CM_EVENT_CONNECT_REQUEST; | |
24d44a39 SW |
1085 | memcpy(&event.local_addr, &ep->com.local_addr, |
1086 | sizeof(ep->com.local_addr)); | |
1087 | memcpy(&event.remote_addr, &ep->com.remote_addr, | |
1088 | sizeof(ep->com.remote_addr)); | |
cfdda9d7 | 1089 | event.provider_data = ep; |
d2fe99e8 KS |
1090 | if (!ep->tried_with_mpa_v1) { |
1091 | /* this means MPA_v2 is used */ | |
1092 | event.ord = ep->ord; | |
1093 | event.ird = ep->ird; | |
1094 | event.private_data_len = ep->plen - | |
1095 | sizeof(struct mpa_v2_conn_params); | |
1096 | event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) + | |
1097 | sizeof(struct mpa_v2_conn_params); | |
1098 | } else { | |
1099 | /* this means MPA_v1 is used. Send max supported */ | |
1100 | event.ord = c4iw_max_read_depth; | |
1101 | event.ird = c4iw_max_read_depth; | |
1102 | event.private_data_len = ep->plen; | |
1103 | event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); | |
1104 | } | |
be13b2df SW |
1105 | c4iw_get_ep(&ep->com); |
1106 | ret = ep->parent_ep->com.cm_id->event_handler(ep->parent_ep->com.cm_id, | |
1107 | &event); | |
1108 | if (ret) | |
1109 | c4iw_put_ep(&ep->com); | |
793dad94 | 1110 | set_bit(CONNREQ_UPCALL, &ep->com.history); |
cfdda9d7 | 1111 | c4iw_put_ep(&ep->parent_ep->com); |
be13b2df | 1112 | return ret; |
cfdda9d7 SW |
1113 | } |
1114 | ||
1115 | static void established_upcall(struct c4iw_ep *ep) | |
1116 | { | |
1117 | struct iw_cm_event event; | |
1118 | ||
1119 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1120 | memset(&event, 0, sizeof(event)); | |
1121 | event.event = IW_CM_EVENT_ESTABLISHED; | |
d2fe99e8 KS |
1122 | event.ird = ep->ird; |
1123 | event.ord = ep->ord; | |
cfdda9d7 SW |
1124 | if (ep->com.cm_id) { |
1125 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1126 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
793dad94 | 1127 | set_bit(ESTAB_UPCALL, &ep->com.history); |
cfdda9d7 SW |
1128 | } |
1129 | } | |
1130 | ||
1131 | static int update_rx_credits(struct c4iw_ep *ep, u32 credits) | |
1132 | { | |
1133 | struct cpl_rx_data_ack *req; | |
1134 | struct sk_buff *skb; | |
1135 | int wrlen = roundup(sizeof *req, 16); | |
1136 | ||
1137 | PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits); | |
1138 | skb = get_skb(NULL, wrlen, GFP_KERNEL); | |
1139 | if (!skb) { | |
1140 | printk(KERN_ERR MOD "update_rx_credits - cannot alloc skb!\n"); | |
1141 | return 0; | |
1142 | } | |
1143 | ||
1144 | req = (struct cpl_rx_data_ack *) skb_put(skb, wrlen); | |
1145 | memset(req, 0, wrlen); | |
1146 | INIT_TP_WR(req, ep->hwtid); | |
1147 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_RX_DATA_ACK, | |
1148 | ep->hwtid)); | |
ba6d3925 SW |
1149 | req->credit_dack = cpu_to_be32(credits | RX_FORCE_ACK(1) | |
1150 | F_RX_DACK_CHANGE | | |
1151 | V_RX_DACK_MODE(dack_mode)); | |
d4f1a5c6 | 1152 | set_wr_txq(skb, CPL_PRIORITY_ACK, ep->ctrlq_idx); |
cfdda9d7 SW |
1153 | c4iw_ofld_send(&ep->com.dev->rdev, skb); |
1154 | return credits; | |
1155 | } | |
1156 | ||
1157 | static void process_mpa_reply(struct c4iw_ep *ep, struct sk_buff *skb) | |
1158 | { | |
1159 | struct mpa_message *mpa; | |
d2fe99e8 | 1160 | struct mpa_v2_conn_params *mpa_v2_params; |
cfdda9d7 | 1161 | u16 plen; |
d2fe99e8 KS |
1162 | u16 resp_ird, resp_ord; |
1163 | u8 rtr_mismatch = 0, insuff_ird = 0; | |
cfdda9d7 SW |
1164 | struct c4iw_qp_attributes attrs; |
1165 | enum c4iw_qp_attr_mask mask; | |
1166 | int err; | |
1167 | ||
1168 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1169 | ||
1170 | /* | |
b33bd0cb SW |
1171 | * Stop mpa timer. If it expired, then |
1172 | * we ignore the MPA reply. process_timeout() | |
1173 | * will abort the connection. | |
cfdda9d7 | 1174 | */ |
b33bd0cb | 1175 | if (stop_ep_timer(ep)) |
cfdda9d7 SW |
1176 | return; |
1177 | ||
1178 | /* | |
1179 | * If we get more than the supported amount of private data | |
1180 | * then we must fail this connection. | |
1181 | */ | |
1182 | if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) { | |
1183 | err = -EINVAL; | |
1184 | goto err; | |
1185 | } | |
1186 | ||
1187 | /* | |
1188 | * copy the new data into our accumulation buffer. | |
1189 | */ | |
1190 | skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]), | |
1191 | skb->len); | |
1192 | ep->mpa_pkt_len += skb->len; | |
1193 | ||
1194 | /* | |
1195 | * if we don't even have the mpa message, then bail. | |
1196 | */ | |
1197 | if (ep->mpa_pkt_len < sizeof(*mpa)) | |
1198 | return; | |
1199 | mpa = (struct mpa_message *) ep->mpa_pkt; | |
1200 | ||
1201 | /* Validate MPA header. */ | |
d2fe99e8 KS |
1202 | if (mpa->revision > mpa_rev) { |
1203 | printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d," | |
1204 | " Received = %d\n", __func__, mpa_rev, mpa->revision); | |
cfdda9d7 SW |
1205 | err = -EPROTO; |
1206 | goto err; | |
1207 | } | |
1208 | if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) { | |
1209 | err = -EPROTO; | |
1210 | goto err; | |
1211 | } | |
1212 | ||
1213 | plen = ntohs(mpa->private_data_size); | |
1214 | ||
1215 | /* | |
1216 | * Fail if there's too much private data. | |
1217 | */ | |
1218 | if (plen > MPA_MAX_PRIVATE_DATA) { | |
1219 | err = -EPROTO; | |
1220 | goto err; | |
1221 | } | |
1222 | ||
1223 | /* | |
1224 | * If plen does not account for pkt size | |
1225 | */ | |
1226 | if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { | |
1227 | err = -EPROTO; | |
1228 | goto err; | |
1229 | } | |
1230 | ||
1231 | ep->plen = (u8) plen; | |
1232 | ||
1233 | /* | |
1234 | * If we don't have all the pdata yet, then bail. | |
1235 | * We'll continue process when more data arrives. | |
1236 | */ | |
1237 | if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) | |
1238 | return; | |
1239 | ||
1240 | if (mpa->flags & MPA_REJECT) { | |
1241 | err = -ECONNREFUSED; | |
1242 | goto err; | |
1243 | } | |
1244 | ||
1245 | /* | |
1246 | * If we get here we have accumulated the entire mpa | |
1247 | * start reply message including private data. And | |
1248 | * the MPA header is valid. | |
1249 | */ | |
c529fb50 | 1250 | __state_set(&ep->com, FPDU_MODE); |
cfdda9d7 SW |
1251 | ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; |
1252 | ep->mpa_attr.recv_marker_enabled = markers_enabled; | |
1253 | ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; | |
d2fe99e8 KS |
1254 | ep->mpa_attr.version = mpa->revision; |
1255 | ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; | |
1256 | ||
1257 | if (mpa->revision == 2) { | |
1258 | ep->mpa_attr.enhanced_rdma_conn = | |
1259 | mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; | |
1260 | if (ep->mpa_attr.enhanced_rdma_conn) { | |
1261 | mpa_v2_params = (struct mpa_v2_conn_params *) | |
1262 | (ep->mpa_pkt + sizeof(*mpa)); | |
1263 | resp_ird = ntohs(mpa_v2_params->ird) & | |
1264 | MPA_V2_IRD_ORD_MASK; | |
1265 | resp_ord = ntohs(mpa_v2_params->ord) & | |
1266 | MPA_V2_IRD_ORD_MASK; | |
1267 | ||
1268 | /* | |
1269 | * This is a double-check. Ideally, below checks are | |
1270 | * not required since ird/ord stuff has been taken | |
1271 | * care of in c4iw_accept_cr | |
1272 | */ | |
1273 | if ((ep->ird < resp_ord) || (ep->ord > resp_ird)) { | |
1274 | err = -ENOMEM; | |
1275 | ep->ird = resp_ord; | |
1276 | ep->ord = resp_ird; | |
1277 | insuff_ird = 1; | |
1278 | } | |
1279 | ||
1280 | if (ntohs(mpa_v2_params->ird) & | |
1281 | MPA_V2_PEER2PEER_MODEL) { | |
1282 | if (ntohs(mpa_v2_params->ord) & | |
1283 | MPA_V2_RDMA_WRITE_RTR) | |
1284 | ep->mpa_attr.p2p_type = | |
1285 | FW_RI_INIT_P2PTYPE_RDMA_WRITE; | |
1286 | else if (ntohs(mpa_v2_params->ord) & | |
1287 | MPA_V2_RDMA_READ_RTR) | |
1288 | ep->mpa_attr.p2p_type = | |
1289 | FW_RI_INIT_P2PTYPE_READ_REQ; | |
1290 | } | |
1291 | } | |
1292 | } else if (mpa->revision == 1) | |
1293 | if (peer2peer) | |
1294 | ep->mpa_attr.p2p_type = p2p_type; | |
1295 | ||
cfdda9d7 | 1296 | PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " |
d2fe99e8 KS |
1297 | "xmit_marker_enabled=%d, version=%d p2p_type=%d local-p2p_type = " |
1298 | "%d\n", __func__, ep->mpa_attr.crc_enabled, | |
1299 | ep->mpa_attr.recv_marker_enabled, | |
1300 | ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, | |
1301 | ep->mpa_attr.p2p_type, p2p_type); | |
1302 | ||
1303 | /* | |
1304 | * If responder's RTR does not match with that of initiator, assign | |
1305 | * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not | |
1306 | * generated when moving QP to RTS state. | |
1307 | * A TERM message will be sent after QP has moved to RTS state | |
1308 | */ | |
91018f86 | 1309 | if ((ep->mpa_attr.version == 2) && peer2peer && |
d2fe99e8 KS |
1310 | (ep->mpa_attr.p2p_type != p2p_type)) { |
1311 | ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; | |
1312 | rtr_mismatch = 1; | |
1313 | } | |
cfdda9d7 SW |
1314 | |
1315 | attrs.mpa_attr = ep->mpa_attr; | |
1316 | attrs.max_ird = ep->ird; | |
1317 | attrs.max_ord = ep->ord; | |
1318 | attrs.llp_stream_handle = ep; | |
1319 | attrs.next_state = C4IW_QP_STATE_RTS; | |
1320 | ||
1321 | mask = C4IW_QP_ATTR_NEXT_STATE | | |
1322 | C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR | | |
1323 | C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD; | |
1324 | ||
1325 | /* bind QP and TID with INIT_WR */ | |
1326 | err = c4iw_modify_qp(ep->com.qp->rhp, | |
1327 | ep->com.qp, mask, &attrs, 1); | |
1328 | if (err) | |
1329 | goto err; | |
d2fe99e8 KS |
1330 | |
1331 | /* | |
1332 | * If responder's RTR requirement did not match with what initiator | |
1333 | * supports, generate TERM message | |
1334 | */ | |
1335 | if (rtr_mismatch) { | |
1336 | printk(KERN_ERR "%s: RTR mismatch, sending TERM\n", __func__); | |
1337 | attrs.layer_etype = LAYER_MPA | DDP_LLP; | |
1338 | attrs.ecode = MPA_NOMATCH_RTR; | |
1339 | attrs.next_state = C4IW_QP_STATE_TERMINATE; | |
1340 | err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, | |
1341 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 0); | |
1342 | err = -ENOMEM; | |
1343 | goto out; | |
1344 | } | |
1345 | ||
1346 | /* | |
1347 | * Generate TERM if initiator IRD is not sufficient for responder | |
1348 | * provided ORD. Currently, we do the same behaviour even when | |
1349 | * responder provided IRD is also not sufficient as regards to | |
1350 | * initiator ORD. | |
1351 | */ | |
1352 | if (insuff_ird) { | |
1353 | printk(KERN_ERR "%s: Insufficient IRD, sending TERM\n", | |
1354 | __func__); | |
1355 | attrs.layer_etype = LAYER_MPA | DDP_LLP; | |
1356 | attrs.ecode = MPA_INSUFF_IRD; | |
1357 | attrs.next_state = C4IW_QP_STATE_TERMINATE; | |
1358 | err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, | |
1359 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 0); | |
1360 | err = -ENOMEM; | |
1361 | goto out; | |
1362 | } | |
cfdda9d7 SW |
1363 | goto out; |
1364 | err: | |
c529fb50 | 1365 | __state_set(&ep->com, ABORTING); |
b21ef16a | 1366 | send_abort(ep, skb, GFP_KERNEL); |
cfdda9d7 SW |
1367 | out: |
1368 | connect_reply_upcall(ep, err); | |
1369 | return; | |
1370 | } | |
1371 | ||
1372 | static void process_mpa_request(struct c4iw_ep *ep, struct sk_buff *skb) | |
1373 | { | |
1374 | struct mpa_message *mpa; | |
d2fe99e8 | 1375 | struct mpa_v2_conn_params *mpa_v2_params; |
cfdda9d7 SW |
1376 | u16 plen; |
1377 | ||
1378 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1379 | ||
cfdda9d7 SW |
1380 | /* |
1381 | * If we get more than the supported amount of private data | |
1382 | * then we must fail this connection. | |
1383 | */ | |
1384 | if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) { | |
b33bd0cb | 1385 | (void)stop_ep_timer(ep); |
cfdda9d7 SW |
1386 | abort_connection(ep, skb, GFP_KERNEL); |
1387 | return; | |
1388 | } | |
1389 | ||
1390 | PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__); | |
1391 | ||
1392 | /* | |
1393 | * Copy the new data into our accumulation buffer. | |
1394 | */ | |
1395 | skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]), | |
1396 | skb->len); | |
1397 | ep->mpa_pkt_len += skb->len; | |
1398 | ||
1399 | /* | |
1400 | * If we don't even have the mpa message, then bail. | |
1401 | * We'll continue process when more data arrives. | |
1402 | */ | |
1403 | if (ep->mpa_pkt_len < sizeof(*mpa)) | |
1404 | return; | |
1405 | ||
1406 | PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__); | |
cfdda9d7 SW |
1407 | mpa = (struct mpa_message *) ep->mpa_pkt; |
1408 | ||
1409 | /* | |
1410 | * Validate MPA Header. | |
1411 | */ | |
d2fe99e8 KS |
1412 | if (mpa->revision > mpa_rev) { |
1413 | printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d," | |
1414 | " Received = %d\n", __func__, mpa_rev, mpa->revision); | |
b33bd0cb | 1415 | (void)stop_ep_timer(ep); |
cfdda9d7 SW |
1416 | abort_connection(ep, skb, GFP_KERNEL); |
1417 | return; | |
1418 | } | |
1419 | ||
1420 | if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) { | |
b33bd0cb | 1421 | (void)stop_ep_timer(ep); |
cfdda9d7 SW |
1422 | abort_connection(ep, skb, GFP_KERNEL); |
1423 | return; | |
1424 | } | |
1425 | ||
1426 | plen = ntohs(mpa->private_data_size); | |
1427 | ||
1428 | /* | |
1429 | * Fail if there's too much private data. | |
1430 | */ | |
1431 | if (plen > MPA_MAX_PRIVATE_DATA) { | |
b33bd0cb | 1432 | (void)stop_ep_timer(ep); |
cfdda9d7 SW |
1433 | abort_connection(ep, skb, GFP_KERNEL); |
1434 | return; | |
1435 | } | |
1436 | ||
1437 | /* | |
1438 | * If plen does not account for pkt size | |
1439 | */ | |
1440 | if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { | |
b33bd0cb | 1441 | (void)stop_ep_timer(ep); |
cfdda9d7 SW |
1442 | abort_connection(ep, skb, GFP_KERNEL); |
1443 | return; | |
1444 | } | |
1445 | ep->plen = (u8) plen; | |
1446 | ||
1447 | /* | |
1448 | * If we don't have all the pdata yet, then bail. | |
1449 | */ | |
1450 | if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) | |
1451 | return; | |
1452 | ||
1453 | /* | |
1454 | * If we get here we have accumulated the entire mpa | |
1455 | * start reply message including private data. | |
1456 | */ | |
1457 | ep->mpa_attr.initiator = 0; | |
1458 | ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; | |
1459 | ep->mpa_attr.recv_marker_enabled = markers_enabled; | |
1460 | ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; | |
d2fe99e8 KS |
1461 | ep->mpa_attr.version = mpa->revision; |
1462 | if (mpa->revision == 1) | |
1463 | ep->tried_with_mpa_v1 = 1; | |
1464 | ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; | |
1465 | ||
1466 | if (mpa->revision == 2) { | |
1467 | ep->mpa_attr.enhanced_rdma_conn = | |
1468 | mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; | |
1469 | if (ep->mpa_attr.enhanced_rdma_conn) { | |
1470 | mpa_v2_params = (struct mpa_v2_conn_params *) | |
1471 | (ep->mpa_pkt + sizeof(*mpa)); | |
1472 | ep->ird = ntohs(mpa_v2_params->ird) & | |
1473 | MPA_V2_IRD_ORD_MASK; | |
1474 | ep->ord = ntohs(mpa_v2_params->ord) & | |
1475 | MPA_V2_IRD_ORD_MASK; | |
1476 | if (ntohs(mpa_v2_params->ird) & MPA_V2_PEER2PEER_MODEL) | |
1477 | if (peer2peer) { | |
1478 | if (ntohs(mpa_v2_params->ord) & | |
1479 | MPA_V2_RDMA_WRITE_RTR) | |
1480 | ep->mpa_attr.p2p_type = | |
1481 | FW_RI_INIT_P2PTYPE_RDMA_WRITE; | |
1482 | else if (ntohs(mpa_v2_params->ord) & | |
1483 | MPA_V2_RDMA_READ_RTR) | |
1484 | ep->mpa_attr.p2p_type = | |
1485 | FW_RI_INIT_P2PTYPE_READ_REQ; | |
1486 | } | |
1487 | } | |
1488 | } else if (mpa->revision == 1) | |
1489 | if (peer2peer) | |
1490 | ep->mpa_attr.p2p_type = p2p_type; | |
1491 | ||
cfdda9d7 SW |
1492 | PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " |
1493 | "xmit_marker_enabled=%d, version=%d p2p_type=%d\n", __func__, | |
1494 | ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, | |
1495 | ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, | |
1496 | ep->mpa_attr.p2p_type); | |
1497 | ||
b33bd0cb SW |
1498 | /* |
1499 | * If the endpoint timer already expired, then we ignore | |
1500 | * the start request. process_timeout() will abort | |
1501 | * the connection. | |
1502 | */ | |
1503 | if (!stop_ep_timer(ep)) { | |
1504 | __state_set(&ep->com, MPA_REQ_RCVD); | |
1505 | ||
1506 | /* drive upcall */ | |
1507 | mutex_lock(&ep->parent_ep->com.mutex); | |
1508 | if (ep->parent_ep->com.state != DEAD) { | |
1509 | if (connect_request_upcall(ep)) | |
1510 | abort_connection(ep, skb, GFP_KERNEL); | |
1511 | } else { | |
be13b2df | 1512 | abort_connection(ep, skb, GFP_KERNEL); |
b33bd0cb SW |
1513 | } |
1514 | mutex_unlock(&ep->parent_ep->com.mutex); | |
be13b2df | 1515 | } |
cfdda9d7 SW |
1516 | return; |
1517 | } | |
1518 | ||
1519 | static int rx_data(struct c4iw_dev *dev, struct sk_buff *skb) | |
1520 | { | |
1521 | struct c4iw_ep *ep; | |
1522 | struct cpl_rx_data *hdr = cplhdr(skb); | |
1523 | unsigned int dlen = ntohs(hdr->len); | |
1524 | unsigned int tid = GET_TID(hdr); | |
1525 | struct tid_info *t = dev->rdev.lldi.tids; | |
793dad94 | 1526 | __u8 status = hdr->status; |
cfdda9d7 SW |
1527 | |
1528 | ep = lookup_tid(t, tid); | |
977116c6 SW |
1529 | if (!ep) |
1530 | return 0; | |
cfdda9d7 SW |
1531 | PDBG("%s ep %p tid %u dlen %u\n", __func__, ep, ep->hwtid, dlen); |
1532 | skb_pull(skb, sizeof(*hdr)); | |
1533 | skb_trim(skb, dlen); | |
c529fb50 | 1534 | mutex_lock(&ep->com.mutex); |
cfdda9d7 | 1535 | |
cfdda9d7 SW |
1536 | /* update RX credits */ |
1537 | update_rx_credits(ep, dlen); | |
1538 | ||
c529fb50 | 1539 | switch (ep->com.state) { |
cfdda9d7 | 1540 | case MPA_REQ_SENT: |
55abf8df | 1541 | ep->rcv_seq += dlen; |
cfdda9d7 SW |
1542 | process_mpa_reply(ep, skb); |
1543 | break; | |
1544 | case MPA_REQ_WAIT: | |
55abf8df | 1545 | ep->rcv_seq += dlen; |
cfdda9d7 SW |
1546 | process_mpa_request(ep, skb); |
1547 | break; | |
1557967b VP |
1548 | case FPDU_MODE: { |
1549 | struct c4iw_qp_attributes attrs; | |
1550 | BUG_ON(!ep->com.qp); | |
e8e5b927 | 1551 | if (status) |
1557967b | 1552 | pr_err("%s Unexpected streaming data." \ |
04236df2 VP |
1553 | " qpid %u ep %p state %d tid %u status %d\n", |
1554 | __func__, ep->com.qp->wq.sq.qid, ep, | |
c529fb50 | 1555 | ep->com.state, ep->hwtid, status); |
97d7ec0c | 1556 | attrs.next_state = C4IW_QP_STATE_TERMINATE; |
1557967b | 1557 | c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, |
97d7ec0c | 1558 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 0); |
cfdda9d7 SW |
1559 | break; |
1560 | } | |
1557967b VP |
1561 | default: |
1562 | break; | |
1563 | } | |
c529fb50 | 1564 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
1565 | return 0; |
1566 | } | |
1567 | ||
1568 | static int abort_rpl(struct c4iw_dev *dev, struct sk_buff *skb) | |
1569 | { | |
1570 | struct c4iw_ep *ep; | |
1571 | struct cpl_abort_rpl_rss *rpl = cplhdr(skb); | |
cfdda9d7 SW |
1572 | int release = 0; |
1573 | unsigned int tid = GET_TID(rpl); | |
1574 | struct tid_info *t = dev->rdev.lldi.tids; | |
1575 | ||
1576 | ep = lookup_tid(t, tid); | |
4984037b VP |
1577 | if (!ep) { |
1578 | printk(KERN_WARNING MOD "Abort rpl to freed endpoint\n"); | |
1579 | return 0; | |
1580 | } | |
92dd6c3d | 1581 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
2f5b48c3 | 1582 | mutex_lock(&ep->com.mutex); |
cfdda9d7 SW |
1583 | switch (ep->com.state) { |
1584 | case ABORTING: | |
91e9c071 | 1585 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); |
cfdda9d7 SW |
1586 | __state_set(&ep->com, DEAD); |
1587 | release = 1; | |
1588 | break; | |
1589 | default: | |
1590 | printk(KERN_ERR "%s ep %p state %d\n", | |
1591 | __func__, ep, ep->com.state); | |
1592 | break; | |
1593 | } | |
2f5b48c3 | 1594 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
1595 | |
1596 | if (release) | |
1597 | release_ep_resources(ep); | |
1598 | return 0; | |
1599 | } | |
1600 | ||
5be78ee9 VP |
1601 | static void send_fw_act_open_req(struct c4iw_ep *ep, unsigned int atid) |
1602 | { | |
1603 | struct sk_buff *skb; | |
1604 | struct fw_ofld_connection_wr *req; | |
1605 | unsigned int mtu_idx; | |
1606 | int wscale; | |
830662f6 | 1607 | struct sockaddr_in *sin; |
5be78ee9 VP |
1608 | |
1609 | skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); | |
1610 | req = (struct fw_ofld_connection_wr *)__skb_put(skb, sizeof(*req)); | |
1611 | memset(req, 0, sizeof(*req)); | |
1612 | req->op_compl = htonl(V_WR_OP(FW_OFLD_CONNECTION_WR)); | |
1613 | req->len16_pkd = htonl(FW_WR_LEN16(DIV_ROUND_UP(sizeof(*req), 16))); | |
41b4f86c KS |
1614 | req->le.filter = cpu_to_be32(cxgb4_select_ntuple( |
1615 | ep->com.dev->rdev.lldi.ports[0], | |
5be78ee9 | 1616 | ep->l2t)); |
830662f6 VP |
1617 | sin = (struct sockaddr_in *)&ep->com.local_addr; |
1618 | req->le.lport = sin->sin_port; | |
1619 | req->le.u.ipv4.lip = sin->sin_addr.s_addr; | |
1620 | sin = (struct sockaddr_in *)&ep->com.remote_addr; | |
1621 | req->le.pport = sin->sin_port; | |
1622 | req->le.u.ipv4.pip = sin->sin_addr.s_addr; | |
5be78ee9 VP |
1623 | req->tcb.t_state_to_astid = |
1624 | htonl(V_FW_OFLD_CONNECTION_WR_T_STATE(TCP_SYN_SENT) | | |
1625 | V_FW_OFLD_CONNECTION_WR_ASTID(atid)); | |
1626 | req->tcb.cplrxdataack_cplpassacceptrpl = | |
1627 | htons(F_FW_OFLD_CONNECTION_WR_CPLRXDATAACK); | |
ef5d6355 | 1628 | req->tcb.tx_max = (__force __be32) jiffies; |
793dad94 | 1629 | req->tcb.rcv_adv = htons(1); |
5be78ee9 VP |
1630 | cxgb4_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx); |
1631 | wscale = compute_wscale(rcv_win); | |
ef5d6355 | 1632 | req->tcb.opt0 = (__force __be64) (TCAM_BYPASS(1) | |
5be78ee9 VP |
1633 | (nocong ? NO_CONG(1) : 0) | |
1634 | KEEP_ALIVE(1) | | |
1635 | DELACK(1) | | |
1636 | WND_SCALE(wscale) | | |
1637 | MSS_IDX(mtu_idx) | | |
1638 | L2T_IDX(ep->l2t->idx) | | |
1639 | TX_CHAN(ep->tx_chan) | | |
1640 | SMAC_SEL(ep->smac_idx) | | |
1641 | DSCP(ep->tos) | | |
1642 | ULP_MODE(ULP_MODE_TCPDDP) | | |
ef5d6355 VP |
1643 | RCV_BUFSIZ(rcv_win >> 10)); |
1644 | req->tcb.opt2 = (__force __be32) (PACE(1) | | |
5be78ee9 VP |
1645 | TX_QUEUE(ep->com.dev->rdev.lldi.tx_modq[ep->tx_chan]) | |
1646 | RX_CHANNEL(0) | | |
1647 | CCTRL_ECN(enable_ecn) | | |
ef5d6355 | 1648 | RSS_QUEUE_VALID | RSS_QUEUE(ep->rss_qid)); |
5be78ee9 | 1649 | if (enable_tcp_timestamps) |
ef5d6355 | 1650 | req->tcb.opt2 |= (__force __be32) TSTAMPS_EN(1); |
5be78ee9 | 1651 | if (enable_tcp_sack) |
ef5d6355 | 1652 | req->tcb.opt2 |= (__force __be32) SACK_EN(1); |
5be78ee9 | 1653 | if (wscale && enable_tcp_window_scaling) |
ef5d6355 VP |
1654 | req->tcb.opt2 |= (__force __be32) WND_SCALE_EN(1); |
1655 | req->tcb.opt0 = cpu_to_be64((__force u64) req->tcb.opt0); | |
1656 | req->tcb.opt2 = cpu_to_be32((__force u32) req->tcb.opt2); | |
793dad94 VP |
1657 | set_wr_txq(skb, CPL_PRIORITY_CONTROL, ep->ctrlq_idx); |
1658 | set_bit(ACT_OFLD_CONN, &ep->com.history); | |
5be78ee9 VP |
1659 | c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
1660 | } | |
1661 | ||
cfdda9d7 SW |
1662 | /* |
1663 | * Return whether a failed active open has allocated a TID | |
1664 | */ | |
1665 | static inline int act_open_has_tid(int status) | |
1666 | { | |
1667 | return status != CPL_ERR_TCAM_FULL && status != CPL_ERR_CONN_EXIST && | |
1668 | status != CPL_ERR_ARP_MISS; | |
1669 | } | |
1670 | ||
7a2cea2a SW |
1671 | /* Returns whether a CPL status conveys negative advice. |
1672 | */ | |
1673 | static int is_neg_adv(unsigned int status) | |
1674 | { | |
1675 | return status == CPL_ERR_RTX_NEG_ADVICE || | |
1676 | status == CPL_ERR_PERSIST_NEG_ADVICE || | |
1677 | status == CPL_ERR_KEEPALV_NEG_ADVICE; | |
1678 | } | |
1679 | ||
793dad94 VP |
1680 | #define ACT_OPEN_RETRY_COUNT 2 |
1681 | ||
830662f6 VP |
1682 | static int import_ep(struct c4iw_ep *ep, int iptype, __u8 *peer_ip, |
1683 | struct dst_entry *dst, struct c4iw_dev *cdev, | |
1684 | bool clear_mpa_v1) | |
1685 | { | |
1686 | struct neighbour *n; | |
1687 | int err, step; | |
1688 | struct net_device *pdev; | |
1689 | ||
1690 | n = dst_neigh_lookup(dst, peer_ip); | |
1691 | if (!n) | |
1692 | return -ENODEV; | |
1693 | ||
1694 | rcu_read_lock(); | |
1695 | err = -ENOMEM; | |
1696 | if (n->dev->flags & IFF_LOOPBACK) { | |
1697 | if (iptype == 4) | |
1698 | pdev = ip_dev_find(&init_net, *(__be32 *)peer_ip); | |
1699 | else if (IS_ENABLED(CONFIG_IPV6)) | |
1700 | for_each_netdev(&init_net, pdev) { | |
1701 | if (ipv6_chk_addr(&init_net, | |
1702 | (struct in6_addr *)peer_ip, | |
1703 | pdev, 1)) | |
1704 | break; | |
1705 | } | |
1706 | else | |
1707 | pdev = NULL; | |
1708 | ||
1709 | if (!pdev) { | |
1710 | err = -ENODEV; | |
1711 | goto out; | |
1712 | } | |
1713 | ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t, | |
1714 | n, pdev, 0); | |
1715 | if (!ep->l2t) | |
1716 | goto out; | |
1717 | ep->mtu = pdev->mtu; | |
1718 | ep->tx_chan = cxgb4_port_chan(pdev); | |
1719 | ep->smac_idx = (cxgb4_port_viid(pdev) & 0x7F) << 1; | |
1720 | step = cdev->rdev.lldi.ntxq / | |
1721 | cdev->rdev.lldi.nchan; | |
1722 | ep->txq_idx = cxgb4_port_idx(pdev) * step; | |
1723 | step = cdev->rdev.lldi.nrxq / | |
1724 | cdev->rdev.lldi.nchan; | |
1725 | ep->ctrlq_idx = cxgb4_port_idx(pdev); | |
1726 | ep->rss_qid = cdev->rdev.lldi.rxq_ids[ | |
1727 | cxgb4_port_idx(pdev) * step]; | |
1728 | dev_put(pdev); | |
1729 | } else { | |
1730 | pdev = get_real_dev(n->dev); | |
1731 | ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t, | |
1732 | n, pdev, 0); | |
1733 | if (!ep->l2t) | |
1734 | goto out; | |
1735 | ep->mtu = dst_mtu(dst); | |
1736 | ep->tx_chan = cxgb4_port_chan(n->dev); | |
1737 | ep->smac_idx = (cxgb4_port_viid(n->dev) & 0x7F) << 1; | |
1738 | step = cdev->rdev.lldi.ntxq / | |
1739 | cdev->rdev.lldi.nchan; | |
1740 | ep->txq_idx = cxgb4_port_idx(n->dev) * step; | |
1741 | ep->ctrlq_idx = cxgb4_port_idx(n->dev); | |
1742 | step = cdev->rdev.lldi.nrxq / | |
1743 | cdev->rdev.lldi.nchan; | |
1744 | ep->rss_qid = cdev->rdev.lldi.rxq_ids[ | |
1745 | cxgb4_port_idx(n->dev) * step]; | |
1746 | ||
1747 | if (clear_mpa_v1) { | |
1748 | ep->retry_with_mpa_v1 = 0; | |
1749 | ep->tried_with_mpa_v1 = 0; | |
1750 | } | |
1751 | } | |
1752 | err = 0; | |
1753 | out: | |
1754 | rcu_read_unlock(); | |
1755 | ||
1756 | neigh_release(n); | |
1757 | ||
1758 | return err; | |
1759 | } | |
1760 | ||
793dad94 VP |
1761 | static int c4iw_reconnect(struct c4iw_ep *ep) |
1762 | { | |
1763 | int err = 0; | |
24d44a39 SW |
1764 | struct sockaddr_in *laddr = (struct sockaddr_in *) |
1765 | &ep->com.cm_id->local_addr; | |
1766 | struct sockaddr_in *raddr = (struct sockaddr_in *) | |
1767 | &ep->com.cm_id->remote_addr; | |
830662f6 VP |
1768 | struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *) |
1769 | &ep->com.cm_id->local_addr; | |
1770 | struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *) | |
1771 | &ep->com.cm_id->remote_addr; | |
1772 | int iptype; | |
1773 | __u8 *ra; | |
793dad94 VP |
1774 | |
1775 | PDBG("%s qp %p cm_id %p\n", __func__, ep->com.qp, ep->com.cm_id); | |
1776 | init_timer(&ep->timer); | |
1777 | ||
1778 | /* | |
1779 | * Allocate an active TID to initiate a TCP connection. | |
1780 | */ | |
1781 | ep->atid = cxgb4_alloc_atid(ep->com.dev->rdev.lldi.tids, ep); | |
1782 | if (ep->atid == -1) { | |
1783 | pr_err("%s - cannot alloc atid.\n", __func__); | |
1784 | err = -ENOMEM; | |
1785 | goto fail2; | |
1786 | } | |
1787 | insert_handle(ep->com.dev, &ep->com.dev->atid_idr, ep, ep->atid); | |
1788 | ||
1789 | /* find a route */ | |
830662f6 VP |
1790 | if (ep->com.cm_id->local_addr.ss_family == AF_INET) { |
1791 | ep->dst = find_route(ep->com.dev, laddr->sin_addr.s_addr, | |
1792 | raddr->sin_addr.s_addr, laddr->sin_port, | |
1793 | raddr->sin_port, 0); | |
1794 | iptype = 4; | |
1795 | ra = (__u8 *)&raddr->sin_addr; | |
1796 | } else { | |
1797 | ep->dst = find_route6(ep->com.dev, laddr6->sin6_addr.s6_addr, | |
1798 | raddr6->sin6_addr.s6_addr, | |
1799 | laddr6->sin6_port, raddr6->sin6_port, 0, | |
1800 | raddr6->sin6_scope_id); | |
1801 | iptype = 6; | |
1802 | ra = (__u8 *)&raddr6->sin6_addr; | |
1803 | } | |
1804 | if (!ep->dst) { | |
793dad94 VP |
1805 | pr_err("%s - cannot find route.\n", __func__); |
1806 | err = -EHOSTUNREACH; | |
1807 | goto fail3; | |
1808 | } | |
830662f6 VP |
1809 | err = import_ep(ep, iptype, ra, ep->dst, ep->com.dev, false); |
1810 | if (err) { | |
793dad94 | 1811 | pr_err("%s - cannot alloc l2e.\n", __func__); |
793dad94 VP |
1812 | goto fail4; |
1813 | } | |
1814 | ||
1815 | PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n", | |
1816 | __func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid, | |
1817 | ep->l2t->idx); | |
1818 | ||
1819 | state_set(&ep->com, CONNECTING); | |
1820 | ep->tos = 0; | |
1821 | ||
1822 | /* send connect request to rnic */ | |
1823 | err = send_connect(ep); | |
1824 | if (!err) | |
1825 | goto out; | |
1826 | ||
1827 | cxgb4_l2t_release(ep->l2t); | |
1828 | fail4: | |
1829 | dst_release(ep->dst); | |
1830 | fail3: | |
1831 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid); | |
1832 | cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid); | |
1833 | fail2: | |
1834 | /* | |
1835 | * remember to send notification to upper layer. | |
1836 | * We are in here so the upper layer is not aware that this is | |
1837 | * re-connect attempt and so, upper layer is still waiting for | |
1838 | * response of 1st connect request. | |
1839 | */ | |
1840 | connect_reply_upcall(ep, -ECONNRESET); | |
1841 | c4iw_put_ep(&ep->com); | |
1842 | out: | |
1843 | return err; | |
1844 | } | |
1845 | ||
cfdda9d7 SW |
1846 | static int act_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb) |
1847 | { | |
1848 | struct c4iw_ep *ep; | |
1849 | struct cpl_act_open_rpl *rpl = cplhdr(skb); | |
1850 | unsigned int atid = GET_TID_TID(GET_AOPEN_ATID( | |
1851 | ntohl(rpl->atid_status))); | |
1852 | struct tid_info *t = dev->rdev.lldi.tids; | |
1853 | int status = GET_AOPEN_STATUS(ntohl(rpl->atid_status)); | |
830662f6 VP |
1854 | struct sockaddr_in *la; |
1855 | struct sockaddr_in *ra; | |
1856 | struct sockaddr_in6 *la6; | |
1857 | struct sockaddr_in6 *ra6; | |
cfdda9d7 SW |
1858 | |
1859 | ep = lookup_atid(t, atid); | |
830662f6 VP |
1860 | la = (struct sockaddr_in *)&ep->com.local_addr; |
1861 | ra = (struct sockaddr_in *)&ep->com.remote_addr; | |
1862 | la6 = (struct sockaddr_in6 *)&ep->com.local_addr; | |
1863 | ra6 = (struct sockaddr_in6 *)&ep->com.remote_addr; | |
cfdda9d7 SW |
1864 | |
1865 | PDBG("%s ep %p atid %u status %u errno %d\n", __func__, ep, atid, | |
1866 | status, status2errno(status)); | |
1867 | ||
7a2cea2a | 1868 | if (is_neg_adv(status)) { |
cfdda9d7 SW |
1869 | printk(KERN_WARNING MOD "Connection problems for atid %u\n", |
1870 | atid); | |
1871 | return 0; | |
1872 | } | |
1873 | ||
793dad94 VP |
1874 | set_bit(ACT_OPEN_RPL, &ep->com.history); |
1875 | ||
d716a2a0 VP |
1876 | /* |
1877 | * Log interesting failures. | |
1878 | */ | |
1879 | switch (status) { | |
1880 | case CPL_ERR_CONN_RESET: | |
1881 | case CPL_ERR_CONN_TIMEDOUT: | |
1882 | break; | |
5be78ee9 | 1883 | case CPL_ERR_TCAM_FULL: |
830662f6 | 1884 | mutex_lock(&dev->rdev.stats.lock); |
3b174d94 | 1885 | dev->rdev.stats.tcam_full++; |
830662f6 VP |
1886 | mutex_unlock(&dev->rdev.stats.lock); |
1887 | if (ep->com.local_addr.ss_family == AF_INET && | |
1888 | dev->rdev.lldi.enable_fw_ofld_conn) { | |
793dad94 VP |
1889 | send_fw_act_open_req(ep, |
1890 | GET_TID_TID(GET_AOPEN_ATID( | |
1891 | ntohl(rpl->atid_status)))); | |
1892 | return 0; | |
1893 | } | |
1894 | break; | |
1895 | case CPL_ERR_CONN_EXIST: | |
1896 | if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) { | |
1897 | set_bit(ACT_RETRY_INUSE, &ep->com.history); | |
1898 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, | |
1899 | atid); | |
1900 | cxgb4_free_atid(t, atid); | |
1901 | dst_release(ep->dst); | |
1902 | cxgb4_l2t_release(ep->l2t); | |
1903 | c4iw_reconnect(ep); | |
1904 | return 0; | |
1905 | } | |
5be78ee9 | 1906 | break; |
d716a2a0 | 1907 | default: |
830662f6 VP |
1908 | if (ep->com.local_addr.ss_family == AF_INET) { |
1909 | pr_info("Active open failure - atid %u status %u errno %d %pI4:%u->%pI4:%u\n", | |
1910 | atid, status, status2errno(status), | |
1911 | &la->sin_addr.s_addr, ntohs(la->sin_port), | |
1912 | &ra->sin_addr.s_addr, ntohs(ra->sin_port)); | |
1913 | } else { | |
1914 | pr_info("Active open failure - atid %u status %u errno %d %pI6:%u->%pI6:%u\n", | |
1915 | atid, status, status2errno(status), | |
1916 | la6->sin6_addr.s6_addr, ntohs(la6->sin6_port), | |
1917 | ra6->sin6_addr.s6_addr, ntohs(ra6->sin6_port)); | |
1918 | } | |
d716a2a0 VP |
1919 | break; |
1920 | } | |
1921 | ||
cfdda9d7 SW |
1922 | connect_reply_upcall(ep, status2errno(status)); |
1923 | state_set(&ep->com, DEAD); | |
1924 | ||
1925 | if (status && act_open_has_tid(status)) | |
1926 | cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, GET_TID(rpl)); | |
1927 | ||
793dad94 | 1928 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, atid); |
cfdda9d7 SW |
1929 | cxgb4_free_atid(t, atid); |
1930 | dst_release(ep->dst); | |
1931 | cxgb4_l2t_release(ep->l2t); | |
1932 | c4iw_put_ep(&ep->com); | |
1933 | ||
1934 | return 0; | |
1935 | } | |
1936 | ||
1937 | static int pass_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb) | |
1938 | { | |
1939 | struct cpl_pass_open_rpl *rpl = cplhdr(skb); | |
1940 | struct tid_info *t = dev->rdev.lldi.tids; | |
1941 | unsigned int stid = GET_TID(rpl); | |
1942 | struct c4iw_listen_ep *ep = lookup_stid(t, stid); | |
1943 | ||
1944 | if (!ep) { | |
1cab775c VP |
1945 | PDBG("%s stid %d lookup failure!\n", __func__, stid); |
1946 | goto out; | |
cfdda9d7 SW |
1947 | } |
1948 | PDBG("%s ep %p status %d error %d\n", __func__, ep, | |
1949 | rpl->status, status2errno(rpl->status)); | |
d9594d99 | 1950 | c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status)); |
cfdda9d7 | 1951 | |
1cab775c | 1952 | out: |
cfdda9d7 SW |
1953 | return 0; |
1954 | } | |
1955 | ||
cfdda9d7 SW |
1956 | static int close_listsrv_rpl(struct c4iw_dev *dev, struct sk_buff *skb) |
1957 | { | |
1958 | struct cpl_close_listsvr_rpl *rpl = cplhdr(skb); | |
1959 | struct tid_info *t = dev->rdev.lldi.tids; | |
1960 | unsigned int stid = GET_TID(rpl); | |
1961 | struct c4iw_listen_ep *ep = lookup_stid(t, stid); | |
1962 | ||
1963 | PDBG("%s ep %p\n", __func__, ep); | |
d9594d99 | 1964 | c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status)); |
cfdda9d7 SW |
1965 | return 0; |
1966 | } | |
1967 | ||
830662f6 | 1968 | static void accept_cr(struct c4iw_ep *ep, struct sk_buff *skb, |
cfdda9d7 SW |
1969 | struct cpl_pass_accept_req *req) |
1970 | { | |
1971 | struct cpl_pass_accept_rpl *rpl; | |
1972 | unsigned int mtu_idx; | |
1973 | u64 opt0; | |
1974 | u32 opt2; | |
1975 | int wscale; | |
1976 | ||
1977 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1978 | BUG_ON(skb_cloned(skb)); | |
1979 | skb_trim(skb, sizeof(*rpl)); | |
1980 | skb_get(skb); | |
1981 | cxgb4_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx); | |
1982 | wscale = compute_wscale(rcv_win); | |
5be78ee9 VP |
1983 | opt0 = (nocong ? NO_CONG(1) : 0) | |
1984 | KEEP_ALIVE(1) | | |
ba6d3925 | 1985 | DELACK(1) | |
cfdda9d7 SW |
1986 | WND_SCALE(wscale) | |
1987 | MSS_IDX(mtu_idx) | | |
1988 | L2T_IDX(ep->l2t->idx) | | |
1989 | TX_CHAN(ep->tx_chan) | | |
1990 | SMAC_SEL(ep->smac_idx) | | |
5be78ee9 | 1991 | DSCP(ep->tos >> 2) | |
b48f3b9c | 1992 | ULP_MODE(ULP_MODE_TCPDDP) | |
cfdda9d7 SW |
1993 | RCV_BUFSIZ(rcv_win>>10); |
1994 | opt2 = RX_CHANNEL(0) | | |
1995 | RSS_QUEUE_VALID | RSS_QUEUE(ep->rss_qid); | |
1996 | ||
1997 | if (enable_tcp_timestamps && req->tcpopt.tstamp) | |
1998 | opt2 |= TSTAMPS_EN(1); | |
1999 | if (enable_tcp_sack && req->tcpopt.sack) | |
2000 | opt2 |= SACK_EN(1); | |
2001 | if (wscale && enable_tcp_window_scaling) | |
2002 | opt2 |= WND_SCALE_EN(1); | |
5be78ee9 VP |
2003 | if (enable_ecn) { |
2004 | const struct tcphdr *tcph; | |
2005 | u32 hlen = ntohl(req->hdr_len); | |
2006 | ||
2007 | tcph = (const void *)(req + 1) + G_ETH_HDR_LEN(hlen) + | |
2008 | G_IP_HDR_LEN(hlen); | |
2009 | if (tcph->ece && tcph->cwr) | |
2010 | opt2 |= CCTRL_ECN(1); | |
2011 | } | |
cfdda9d7 SW |
2012 | |
2013 | rpl = cplhdr(skb); | |
2014 | INIT_TP_WR(rpl, ep->hwtid); | |
2015 | OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL, | |
2016 | ep->hwtid)); | |
2017 | rpl->opt0 = cpu_to_be64(opt0); | |
2018 | rpl->opt2 = cpu_to_be32(opt2); | |
d4f1a5c6 | 2019 | set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx); |
b38a0ad8 | 2020 | t4_set_arp_err_handler(skb, NULL, arp_failure_discard); |
cfdda9d7 SW |
2021 | c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
2022 | ||
2023 | return; | |
2024 | } | |
2025 | ||
830662f6 | 2026 | static void reject_cr(struct c4iw_dev *dev, u32 hwtid, struct sk_buff *skb) |
cfdda9d7 | 2027 | { |
830662f6 | 2028 | PDBG("%s c4iw_dev %p tid %u\n", __func__, dev, hwtid); |
cfdda9d7 SW |
2029 | BUG_ON(skb_cloned(skb)); |
2030 | skb_trim(skb, sizeof(struct cpl_tid_release)); | |
2031 | skb_get(skb); | |
2032 | release_tid(&dev->rdev, hwtid, skb); | |
2033 | return; | |
2034 | } | |
2035 | ||
830662f6 VP |
2036 | static void get_4tuple(struct cpl_pass_accept_req *req, int *iptype, |
2037 | __u8 *local_ip, __u8 *peer_ip, | |
cfdda9d7 SW |
2038 | __be16 *local_port, __be16 *peer_port) |
2039 | { | |
2040 | int eth_len = G_ETH_HDR_LEN(be32_to_cpu(req->hdr_len)); | |
2041 | int ip_len = G_IP_HDR_LEN(be32_to_cpu(req->hdr_len)); | |
2042 | struct iphdr *ip = (struct iphdr *)((u8 *)(req + 1) + eth_len); | |
830662f6 | 2043 | struct ipv6hdr *ip6 = (struct ipv6hdr *)((u8 *)(req + 1) + eth_len); |
cfdda9d7 SW |
2044 | struct tcphdr *tcp = (struct tcphdr *) |
2045 | ((u8 *)(req + 1) + eth_len + ip_len); | |
2046 | ||
830662f6 VP |
2047 | if (ip->version == 4) { |
2048 | PDBG("%s saddr 0x%x daddr 0x%x sport %u dport %u\n", __func__, | |
2049 | ntohl(ip->saddr), ntohl(ip->daddr), ntohs(tcp->source), | |
2050 | ntohs(tcp->dest)); | |
2051 | *iptype = 4; | |
2052 | memcpy(peer_ip, &ip->saddr, 4); | |
2053 | memcpy(local_ip, &ip->daddr, 4); | |
2054 | } else { | |
2055 | PDBG("%s saddr %pI6 daddr %pI6 sport %u dport %u\n", __func__, | |
2056 | ip6->saddr.s6_addr, ip6->daddr.s6_addr, ntohs(tcp->source), | |
2057 | ntohs(tcp->dest)); | |
2058 | *iptype = 6; | |
2059 | memcpy(peer_ip, ip6->saddr.s6_addr, 16); | |
2060 | memcpy(local_ip, ip6->daddr.s6_addr, 16); | |
2061 | } | |
cfdda9d7 SW |
2062 | *peer_port = tcp->source; |
2063 | *local_port = tcp->dest; | |
2064 | ||
2065 | return; | |
2066 | } | |
2067 | ||
2068 | static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb) | |
2069 | { | |
793dad94 | 2070 | struct c4iw_ep *child_ep = NULL, *parent_ep; |
cfdda9d7 SW |
2071 | struct cpl_pass_accept_req *req = cplhdr(skb); |
2072 | unsigned int stid = GET_POPEN_TID(ntohl(req->tos_stid)); | |
2073 | struct tid_info *t = dev->rdev.lldi.tids; | |
2074 | unsigned int hwtid = GET_TID(req); | |
2075 | struct dst_entry *dst; | |
830662f6 | 2076 | __u8 local_ip[16], peer_ip[16]; |
cfdda9d7 | 2077 | __be16 local_port, peer_port; |
3786cf18 | 2078 | int err; |
1cab775c | 2079 | u16 peer_mss = ntohs(req->tcpopt.mss); |
830662f6 | 2080 | int iptype; |
cfdda9d7 SW |
2081 | |
2082 | parent_ep = lookup_stid(t, stid); | |
1cab775c VP |
2083 | if (!parent_ep) { |
2084 | PDBG("%s connect request on invalid stid %d\n", __func__, stid); | |
2085 | goto reject; | |
2086 | } | |
1cab775c | 2087 | |
cfdda9d7 SW |
2088 | if (state_read(&parent_ep->com) != LISTEN) { |
2089 | printk(KERN_ERR "%s - listening ep not in LISTEN\n", | |
2090 | __func__); | |
2091 | goto reject; | |
2092 | } | |
2093 | ||
830662f6 VP |
2094 | get_4tuple(req, &iptype, local_ip, peer_ip, &local_port, &peer_port); |
2095 | ||
cfdda9d7 | 2096 | /* Find output route */ |
830662f6 VP |
2097 | if (iptype == 4) { |
2098 | PDBG("%s parent ep %p hwtid %u laddr %pI4 raddr %pI4 lport %d rport %d peer_mss %d\n" | |
2099 | , __func__, parent_ep, hwtid, | |
2100 | local_ip, peer_ip, ntohs(local_port), | |
2101 | ntohs(peer_port), peer_mss); | |
2102 | dst = find_route(dev, *(__be32 *)local_ip, *(__be32 *)peer_ip, | |
2103 | local_port, peer_port, | |
2104 | GET_POPEN_TOS(ntohl(req->tos_stid))); | |
2105 | } else { | |
2106 | PDBG("%s parent ep %p hwtid %u laddr %pI6 raddr %pI6 lport %d rport %d peer_mss %d\n" | |
2107 | , __func__, parent_ep, hwtid, | |
2108 | local_ip, peer_ip, ntohs(local_port), | |
2109 | ntohs(peer_port), peer_mss); | |
2110 | dst = find_route6(dev, local_ip, peer_ip, local_port, peer_port, | |
2111 | PASS_OPEN_TOS(ntohl(req->tos_stid)), | |
2112 | ((struct sockaddr_in6 *) | |
2113 | &parent_ep->com.local_addr)->sin6_scope_id); | |
2114 | } | |
2115 | if (!dst) { | |
cfdda9d7 SW |
2116 | printk(KERN_ERR MOD "%s - failed to find dst entry!\n", |
2117 | __func__); | |
2118 | goto reject; | |
2119 | } | |
3786cf18 DM |
2120 | |
2121 | child_ep = alloc_ep(sizeof(*child_ep), GFP_KERNEL); | |
2122 | if (!child_ep) { | |
2123 | printk(KERN_ERR MOD "%s - failed to allocate ep entry!\n", | |
cfdda9d7 SW |
2124 | __func__); |
2125 | dst_release(dst); | |
2126 | goto reject; | |
2127 | } | |
2128 | ||
830662f6 | 2129 | err = import_ep(child_ep, iptype, peer_ip, dst, dev, false); |
3786cf18 DM |
2130 | if (err) { |
2131 | printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n", | |
cfdda9d7 | 2132 | __func__); |
cfdda9d7 | 2133 | dst_release(dst); |
3786cf18 | 2134 | kfree(child_ep); |
cfdda9d7 SW |
2135 | goto reject; |
2136 | } | |
3786cf18 | 2137 | |
1cab775c VP |
2138 | if (peer_mss && child_ep->mtu > (peer_mss + 40)) |
2139 | child_ep->mtu = peer_mss + 40; | |
2140 | ||
cfdda9d7 SW |
2141 | state_set(&child_ep->com, CONNECTING); |
2142 | child_ep->com.dev = dev; | |
2143 | child_ep->com.cm_id = NULL; | |
830662f6 VP |
2144 | if (iptype == 4) { |
2145 | struct sockaddr_in *sin = (struct sockaddr_in *) | |
2146 | &child_ep->com.local_addr; | |
2147 | sin->sin_family = PF_INET; | |
2148 | sin->sin_port = local_port; | |
2149 | sin->sin_addr.s_addr = *(__be32 *)local_ip; | |
2150 | sin = (struct sockaddr_in *)&child_ep->com.remote_addr; | |
2151 | sin->sin_family = PF_INET; | |
2152 | sin->sin_port = peer_port; | |
2153 | sin->sin_addr.s_addr = *(__be32 *)peer_ip; | |
2154 | } else { | |
2155 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) | |
2156 | &child_ep->com.local_addr; | |
2157 | sin6->sin6_family = PF_INET6; | |
2158 | sin6->sin6_port = local_port; | |
2159 | memcpy(sin6->sin6_addr.s6_addr, local_ip, 16); | |
2160 | sin6 = (struct sockaddr_in6 *)&child_ep->com.remote_addr; | |
2161 | sin6->sin6_family = PF_INET6; | |
2162 | sin6->sin6_port = peer_port; | |
2163 | memcpy(sin6->sin6_addr.s6_addr, peer_ip, 16); | |
2164 | } | |
cfdda9d7 SW |
2165 | c4iw_get_ep(&parent_ep->com); |
2166 | child_ep->parent_ep = parent_ep; | |
2167 | child_ep->tos = GET_POPEN_TOS(ntohl(req->tos_stid)); | |
cfdda9d7 SW |
2168 | child_ep->dst = dst; |
2169 | child_ep->hwtid = hwtid; | |
cfdda9d7 SW |
2170 | |
2171 | PDBG("%s tx_chan %u smac_idx %u rss_qid %u\n", __func__, | |
3786cf18 | 2172 | child_ep->tx_chan, child_ep->smac_idx, child_ep->rss_qid); |
cfdda9d7 SW |
2173 | |
2174 | init_timer(&child_ep->timer); | |
2175 | cxgb4_insert_tid(t, child_ep, hwtid); | |
b3de6cfe | 2176 | insert_handle(dev, &dev->hwtid_idr, child_ep, child_ep->hwtid); |
830662f6 | 2177 | accept_cr(child_ep, skb, req); |
793dad94 | 2178 | set_bit(PASS_ACCEPT_REQ, &child_ep->com.history); |
cfdda9d7 SW |
2179 | goto out; |
2180 | reject: | |
830662f6 | 2181 | reject_cr(dev, hwtid, skb); |
cfdda9d7 SW |
2182 | out: |
2183 | return 0; | |
2184 | } | |
2185 | ||
2186 | static int pass_establish(struct c4iw_dev *dev, struct sk_buff *skb) | |
2187 | { | |
2188 | struct c4iw_ep *ep; | |
2189 | struct cpl_pass_establish *req = cplhdr(skb); | |
2190 | struct tid_info *t = dev->rdev.lldi.tids; | |
2191 | unsigned int tid = GET_TID(req); | |
2192 | ||
2193 | ep = lookup_tid(t, tid); | |
2194 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
2195 | ep->snd_seq = be32_to_cpu(req->snd_isn); | |
2196 | ep->rcv_seq = be32_to_cpu(req->rcv_isn); | |
2197 | ||
1cab775c VP |
2198 | PDBG("%s ep %p hwtid %u tcp_opt 0x%02x\n", __func__, ep, tid, |
2199 | ntohs(req->tcp_opt)); | |
2200 | ||
cfdda9d7 SW |
2201 | set_emss(ep, ntohs(req->tcp_opt)); |
2202 | ||
2203 | dst_confirm(ep->dst); | |
2204 | state_set(&ep->com, MPA_REQ_WAIT); | |
2205 | start_ep_timer(ep); | |
2206 | send_flowc(ep, skb); | |
793dad94 | 2207 | set_bit(PASS_ESTAB, &ep->com.history); |
cfdda9d7 SW |
2208 | |
2209 | return 0; | |
2210 | } | |
2211 | ||
2212 | static int peer_close(struct c4iw_dev *dev, struct sk_buff *skb) | |
2213 | { | |
2214 | struct cpl_peer_close *hdr = cplhdr(skb); | |
2215 | struct c4iw_ep *ep; | |
2216 | struct c4iw_qp_attributes attrs; | |
cfdda9d7 SW |
2217 | int disconnect = 1; |
2218 | int release = 0; | |
cfdda9d7 SW |
2219 | struct tid_info *t = dev->rdev.lldi.tids; |
2220 | unsigned int tid = GET_TID(hdr); | |
8da7e7a5 | 2221 | int ret; |
cfdda9d7 SW |
2222 | |
2223 | ep = lookup_tid(t, tid); | |
2224 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
2225 | dst_confirm(ep->dst); | |
2226 | ||
793dad94 | 2227 | set_bit(PEER_CLOSE, &ep->com.history); |
2f5b48c3 | 2228 | mutex_lock(&ep->com.mutex); |
cfdda9d7 SW |
2229 | switch (ep->com.state) { |
2230 | case MPA_REQ_WAIT: | |
2231 | __state_set(&ep->com, CLOSING); | |
2232 | break; | |
2233 | case MPA_REQ_SENT: | |
2234 | __state_set(&ep->com, CLOSING); | |
2235 | connect_reply_upcall(ep, -ECONNRESET); | |
2236 | break; | |
2237 | case MPA_REQ_RCVD: | |
2238 | ||
2239 | /* | |
2240 | * We're gonna mark this puppy DEAD, but keep | |
2241 | * the reference on it until the ULP accepts or | |
2242 | * rejects the CR. Also wake up anyone waiting | |
2243 | * in rdma connection migration (see c4iw_accept_cr()). | |
2244 | */ | |
2245 | __state_set(&ep->com, CLOSING); | |
cfdda9d7 | 2246 | PDBG("waking up ep %p tid %u\n", ep, ep->hwtid); |
d9594d99 | 2247 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); |
cfdda9d7 SW |
2248 | break; |
2249 | case MPA_REP_SENT: | |
2250 | __state_set(&ep->com, CLOSING); | |
cfdda9d7 | 2251 | PDBG("waking up ep %p tid %u\n", ep, ep->hwtid); |
d9594d99 | 2252 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); |
cfdda9d7 SW |
2253 | break; |
2254 | case FPDU_MODE: | |
ca5a2202 | 2255 | start_ep_timer(ep); |
cfdda9d7 | 2256 | __state_set(&ep->com, CLOSING); |
30c95c2d | 2257 | attrs.next_state = C4IW_QP_STATE_CLOSING; |
8da7e7a5 | 2258 | ret = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, |
30c95c2d | 2259 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); |
8da7e7a5 SW |
2260 | if (ret != -ECONNRESET) { |
2261 | peer_close_upcall(ep); | |
2262 | disconnect = 1; | |
2263 | } | |
cfdda9d7 SW |
2264 | break; |
2265 | case ABORTING: | |
2266 | disconnect = 0; | |
2267 | break; | |
2268 | case CLOSING: | |
2269 | __state_set(&ep->com, MORIBUND); | |
2270 | disconnect = 0; | |
2271 | break; | |
2272 | case MORIBUND: | |
b33bd0cb | 2273 | (void)stop_ep_timer(ep); |
cfdda9d7 SW |
2274 | if (ep->com.cm_id && ep->com.qp) { |
2275 | attrs.next_state = C4IW_QP_STATE_IDLE; | |
2276 | c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, | |
2277 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); | |
2278 | } | |
be13b2df | 2279 | close_complete_upcall(ep, 0); |
cfdda9d7 SW |
2280 | __state_set(&ep->com, DEAD); |
2281 | release = 1; | |
2282 | disconnect = 0; | |
2283 | break; | |
2284 | case DEAD: | |
2285 | disconnect = 0; | |
2286 | break; | |
2287 | default: | |
2288 | BUG_ON(1); | |
2289 | } | |
2f5b48c3 | 2290 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
2291 | if (disconnect) |
2292 | c4iw_ep_disconnect(ep, 0, GFP_KERNEL); | |
2293 | if (release) | |
2294 | release_ep_resources(ep); | |
2295 | return 0; | |
2296 | } | |
2297 | ||
cfdda9d7 SW |
2298 | static int peer_abort(struct c4iw_dev *dev, struct sk_buff *skb) |
2299 | { | |
2300 | struct cpl_abort_req_rss *req = cplhdr(skb); | |
2301 | struct c4iw_ep *ep; | |
2302 | struct cpl_abort_rpl *rpl; | |
2303 | struct sk_buff *rpl_skb; | |
2304 | struct c4iw_qp_attributes attrs; | |
2305 | int ret; | |
2306 | int release = 0; | |
cfdda9d7 SW |
2307 | struct tid_info *t = dev->rdev.lldi.tids; |
2308 | unsigned int tid = GET_TID(req); | |
cfdda9d7 SW |
2309 | |
2310 | ep = lookup_tid(t, tid); | |
7a2cea2a | 2311 | if (is_neg_adv(req->status)) { |
cfdda9d7 SW |
2312 | PDBG("%s neg_adv_abort ep %p tid %u\n", __func__, ep, |
2313 | ep->hwtid); | |
2314 | return 0; | |
2315 | } | |
cfdda9d7 SW |
2316 | PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid, |
2317 | ep->com.state); | |
793dad94 | 2318 | set_bit(PEER_ABORT, &ep->com.history); |
2f5b48c3 SW |
2319 | |
2320 | /* | |
2321 | * Wake up any threads in rdma_init() or rdma_fini(). | |
d2fe99e8 KS |
2322 | * However, this is not needed if com state is just |
2323 | * MPA_REQ_SENT | |
2f5b48c3 | 2324 | */ |
d2fe99e8 KS |
2325 | if (ep->com.state != MPA_REQ_SENT) |
2326 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); | |
2f5b48c3 SW |
2327 | |
2328 | mutex_lock(&ep->com.mutex); | |
cfdda9d7 SW |
2329 | switch (ep->com.state) { |
2330 | case CONNECTING: | |
2331 | break; | |
2332 | case MPA_REQ_WAIT: | |
b33bd0cb | 2333 | (void)stop_ep_timer(ep); |
cfdda9d7 SW |
2334 | break; |
2335 | case MPA_REQ_SENT: | |
b33bd0cb | 2336 | (void)stop_ep_timer(ep); |
fe7e0a4d | 2337 | if (mpa_rev == 1 || (mpa_rev == 2 && ep->tried_with_mpa_v1)) |
d2fe99e8 KS |
2338 | connect_reply_upcall(ep, -ECONNRESET); |
2339 | else { | |
2340 | /* | |
2341 | * we just don't send notification upwards because we | |
2342 | * want to retry with mpa_v1 without upper layers even | |
2343 | * knowing it. | |
2344 | * | |
2345 | * do some housekeeping so as to re-initiate the | |
2346 | * connection | |
2347 | */ | |
2348 | PDBG("%s: mpa_rev=%d. Retrying with mpav1\n", __func__, | |
2349 | mpa_rev); | |
2350 | ep->retry_with_mpa_v1 = 1; | |
2351 | } | |
cfdda9d7 SW |
2352 | break; |
2353 | case MPA_REP_SENT: | |
cfdda9d7 SW |
2354 | break; |
2355 | case MPA_REQ_RCVD: | |
cfdda9d7 SW |
2356 | break; |
2357 | case MORIBUND: | |
2358 | case CLOSING: | |
ca5a2202 | 2359 | stop_ep_timer(ep); |
cfdda9d7 SW |
2360 | /*FALLTHROUGH*/ |
2361 | case FPDU_MODE: | |
2362 | if (ep->com.cm_id && ep->com.qp) { | |
2363 | attrs.next_state = C4IW_QP_STATE_ERROR; | |
2364 | ret = c4iw_modify_qp(ep->com.qp->rhp, | |
2365 | ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, | |
2366 | &attrs, 1); | |
2367 | if (ret) | |
2368 | printk(KERN_ERR MOD | |
2369 | "%s - qp <- error failed!\n", | |
2370 | __func__); | |
2371 | } | |
2372 | peer_abort_upcall(ep); | |
2373 | break; | |
2374 | case ABORTING: | |
2375 | break; | |
2376 | case DEAD: | |
2377 | PDBG("%s PEER_ABORT IN DEAD STATE!!!!\n", __func__); | |
2f5b48c3 | 2378 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
2379 | return 0; |
2380 | default: | |
2381 | BUG_ON(1); | |
2382 | break; | |
2383 | } | |
2384 | dst_confirm(ep->dst); | |
2385 | if (ep->com.state != ABORTING) { | |
2386 | __state_set(&ep->com, DEAD); | |
d2fe99e8 KS |
2387 | /* we don't release if we want to retry with mpa_v1 */ |
2388 | if (!ep->retry_with_mpa_v1) | |
2389 | release = 1; | |
cfdda9d7 | 2390 | } |
2f5b48c3 | 2391 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
2392 | |
2393 | rpl_skb = get_skb(skb, sizeof(*rpl), GFP_KERNEL); | |
2394 | if (!rpl_skb) { | |
2395 | printk(KERN_ERR MOD "%s - cannot allocate skb!\n", | |
2396 | __func__); | |
2397 | release = 1; | |
2398 | goto out; | |
2399 | } | |
2400 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
2401 | rpl = (struct cpl_abort_rpl *) skb_put(rpl_skb, sizeof(*rpl)); | |
2402 | INIT_TP_WR(rpl, ep->hwtid); | |
2403 | OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_RPL, ep->hwtid)); | |
2404 | rpl->cmd = CPL_ABORT_NO_RST; | |
2405 | c4iw_ofld_send(&ep->com.dev->rdev, rpl_skb); | |
2406 | out: | |
cfdda9d7 SW |
2407 | if (release) |
2408 | release_ep_resources(ep); | |
fe7e0a4d VP |
2409 | else if (ep->retry_with_mpa_v1) { |
2410 | remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid); | |
d2fe99e8 KS |
2411 | cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid); |
2412 | dst_release(ep->dst); | |
2413 | cxgb4_l2t_release(ep->l2t); | |
2414 | c4iw_reconnect(ep); | |
2415 | } | |
2416 | ||
cfdda9d7 SW |
2417 | return 0; |
2418 | } | |
2419 | ||
2420 | static int close_con_rpl(struct c4iw_dev *dev, struct sk_buff *skb) | |
2421 | { | |
2422 | struct c4iw_ep *ep; | |
2423 | struct c4iw_qp_attributes attrs; | |
2424 | struct cpl_close_con_rpl *rpl = cplhdr(skb); | |
cfdda9d7 SW |
2425 | int release = 0; |
2426 | struct tid_info *t = dev->rdev.lldi.tids; | |
2427 | unsigned int tid = GET_TID(rpl); | |
cfdda9d7 SW |
2428 | |
2429 | ep = lookup_tid(t, tid); | |
2430 | ||
2431 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
2432 | BUG_ON(!ep); | |
2433 | ||
2434 | /* The cm_id may be null if we failed to connect */ | |
2f5b48c3 | 2435 | mutex_lock(&ep->com.mutex); |
cfdda9d7 SW |
2436 | switch (ep->com.state) { |
2437 | case CLOSING: | |
2438 | __state_set(&ep->com, MORIBUND); | |
2439 | break; | |
2440 | case MORIBUND: | |
b33bd0cb | 2441 | (void)stop_ep_timer(ep); |
cfdda9d7 SW |
2442 | if ((ep->com.cm_id) && (ep->com.qp)) { |
2443 | attrs.next_state = C4IW_QP_STATE_IDLE; | |
2444 | c4iw_modify_qp(ep->com.qp->rhp, | |
2445 | ep->com.qp, | |
2446 | C4IW_QP_ATTR_NEXT_STATE, | |
2447 | &attrs, 1); | |
2448 | } | |
be13b2df | 2449 | close_complete_upcall(ep, 0); |
cfdda9d7 SW |
2450 | __state_set(&ep->com, DEAD); |
2451 | release = 1; | |
2452 | break; | |
2453 | case ABORTING: | |
2454 | case DEAD: | |
2455 | break; | |
2456 | default: | |
2457 | BUG_ON(1); | |
2458 | break; | |
2459 | } | |
2f5b48c3 | 2460 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
2461 | if (release) |
2462 | release_ep_resources(ep); | |
2463 | return 0; | |
2464 | } | |
2465 | ||
2466 | static int terminate(struct c4iw_dev *dev, struct sk_buff *skb) | |
2467 | { | |
0e42c1f4 | 2468 | struct cpl_rdma_terminate *rpl = cplhdr(skb); |
cfdda9d7 | 2469 | struct tid_info *t = dev->rdev.lldi.tids; |
0e42c1f4 SW |
2470 | unsigned int tid = GET_TID(rpl); |
2471 | struct c4iw_ep *ep; | |
2472 | struct c4iw_qp_attributes attrs; | |
cfdda9d7 SW |
2473 | |
2474 | ep = lookup_tid(t, tid); | |
0e42c1f4 | 2475 | BUG_ON(!ep); |
cfdda9d7 | 2476 | |
30c95c2d | 2477 | if (ep && ep->com.qp) { |
0e42c1f4 SW |
2478 | printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", tid, |
2479 | ep->com.qp->wq.sq.qid); | |
2480 | attrs.next_state = C4IW_QP_STATE_TERMINATE; | |
2481 | c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, | |
2482 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); | |
2483 | } else | |
30c95c2d | 2484 | printk(KERN_WARNING MOD "TERM received tid %u no ep/qp\n", tid); |
cfdda9d7 | 2485 | |
cfdda9d7 SW |
2486 | return 0; |
2487 | } | |
2488 | ||
2489 | /* | |
2490 | * Upcall from the adapter indicating data has been transmitted. | |
2491 | * For us its just the single MPA request or reply. We can now free | |
2492 | * the skb holding the mpa message. | |
2493 | */ | |
2494 | static int fw4_ack(struct c4iw_dev *dev, struct sk_buff *skb) | |
2495 | { | |
2496 | struct c4iw_ep *ep; | |
2497 | struct cpl_fw4_ack *hdr = cplhdr(skb); | |
2498 | u8 credits = hdr->credits; | |
2499 | unsigned int tid = GET_TID(hdr); | |
2500 | struct tid_info *t = dev->rdev.lldi.tids; | |
2501 | ||
2502 | ||
2503 | ep = lookup_tid(t, tid); | |
2504 | PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits); | |
2505 | if (credits == 0) { | |
aa1ad260 JP |
2506 | PDBG("%s 0 credit ack ep %p tid %u state %u\n", |
2507 | __func__, ep, ep->hwtid, state_read(&ep->com)); | |
cfdda9d7 SW |
2508 | return 0; |
2509 | } | |
2510 | ||
2511 | dst_confirm(ep->dst); | |
2512 | if (ep->mpa_skb) { | |
2513 | PDBG("%s last streaming msg ack ep %p tid %u state %u " | |
2514 | "initiator %u freeing skb\n", __func__, ep, ep->hwtid, | |
2515 | state_read(&ep->com), ep->mpa_attr.initiator ? 1 : 0); | |
2516 | kfree_skb(ep->mpa_skb); | |
2517 | ep->mpa_skb = NULL; | |
2518 | } | |
2519 | return 0; | |
2520 | } | |
2521 | ||
cfdda9d7 SW |
2522 | int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) |
2523 | { | |
a7db89eb SW |
2524 | int err = 0; |
2525 | int disconnect = 0; | |
cfdda9d7 SW |
2526 | struct c4iw_ep *ep = to_ep(cm_id); |
2527 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
2528 | ||
a7db89eb SW |
2529 | mutex_lock(&ep->com.mutex); |
2530 | if (ep->com.state == DEAD) { | |
2531 | mutex_unlock(&ep->com.mutex); | |
cfdda9d7 SW |
2532 | c4iw_put_ep(&ep->com); |
2533 | return -ECONNRESET; | |
2534 | } | |
793dad94 | 2535 | set_bit(ULP_REJECT, &ep->com.history); |
a7db89eb | 2536 | BUG_ON(ep->com.state != MPA_REQ_RCVD); |
cfdda9d7 SW |
2537 | if (mpa_rev == 0) |
2538 | abort_connection(ep, NULL, GFP_KERNEL); | |
2539 | else { | |
2540 | err = send_mpa_reject(ep, pdata, pdata_len); | |
a7db89eb | 2541 | disconnect = 1; |
cfdda9d7 | 2542 | } |
a7db89eb SW |
2543 | mutex_unlock(&ep->com.mutex); |
2544 | if (disconnect) | |
2545 | err = c4iw_ep_disconnect(ep, 0, GFP_KERNEL); | |
cfdda9d7 SW |
2546 | c4iw_put_ep(&ep->com); |
2547 | return 0; | |
2548 | } | |
2549 | ||
2550 | int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) | |
2551 | { | |
2552 | int err; | |
2553 | struct c4iw_qp_attributes attrs; | |
2554 | enum c4iw_qp_attr_mask mask; | |
2555 | struct c4iw_ep *ep = to_ep(cm_id); | |
2556 | struct c4iw_dev *h = to_c4iw_dev(cm_id->device); | |
2557 | struct c4iw_qp *qp = get_qhp(h, conn_param->qpn); | |
2558 | ||
2559 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
a7db89eb SW |
2560 | |
2561 | mutex_lock(&ep->com.mutex); | |
2562 | if (ep->com.state == DEAD) { | |
cfdda9d7 SW |
2563 | err = -ECONNRESET; |
2564 | goto err; | |
2565 | } | |
2566 | ||
a7db89eb | 2567 | BUG_ON(ep->com.state != MPA_REQ_RCVD); |
cfdda9d7 SW |
2568 | BUG_ON(!qp); |
2569 | ||
793dad94 | 2570 | set_bit(ULP_ACCEPT, &ep->com.history); |
be4c9bad RD |
2571 | if ((conn_param->ord > c4iw_max_read_depth) || |
2572 | (conn_param->ird > c4iw_max_read_depth)) { | |
cfdda9d7 SW |
2573 | abort_connection(ep, NULL, GFP_KERNEL); |
2574 | err = -EINVAL; | |
2575 | goto err; | |
2576 | } | |
2577 | ||
d2fe99e8 KS |
2578 | if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { |
2579 | if (conn_param->ord > ep->ird) { | |
2580 | ep->ird = conn_param->ird; | |
2581 | ep->ord = conn_param->ord; | |
2582 | send_mpa_reject(ep, conn_param->private_data, | |
2583 | conn_param->private_data_len); | |
2584 | abort_connection(ep, NULL, GFP_KERNEL); | |
2585 | err = -ENOMEM; | |
2586 | goto err; | |
2587 | } | |
2588 | if (conn_param->ird > ep->ord) { | |
2589 | if (!ep->ord) | |
2590 | conn_param->ird = 1; | |
2591 | else { | |
2592 | abort_connection(ep, NULL, GFP_KERNEL); | |
2593 | err = -ENOMEM; | |
2594 | goto err; | |
2595 | } | |
2596 | } | |
cfdda9d7 | 2597 | |
d2fe99e8 | 2598 | } |
cfdda9d7 SW |
2599 | ep->ird = conn_param->ird; |
2600 | ep->ord = conn_param->ord; | |
2601 | ||
d2fe99e8 KS |
2602 | if (ep->mpa_attr.version != 2) |
2603 | if (peer2peer && ep->ird == 0) | |
2604 | ep->ird = 1; | |
cfdda9d7 SW |
2605 | |
2606 | PDBG("%s %d ird %d ord %d\n", __func__, __LINE__, ep->ird, ep->ord); | |
2607 | ||
d2fe99e8 KS |
2608 | cm_id->add_ref(cm_id); |
2609 | ep->com.cm_id = cm_id; | |
2610 | ep->com.qp = qp; | |
325abead | 2611 | ref_qp(ep); |
d2fe99e8 | 2612 | |
cfdda9d7 SW |
2613 | /* bind QP to EP and move to RTS */ |
2614 | attrs.mpa_attr = ep->mpa_attr; | |
2615 | attrs.max_ird = ep->ird; | |
2616 | attrs.max_ord = ep->ord; | |
2617 | attrs.llp_stream_handle = ep; | |
2618 | attrs.next_state = C4IW_QP_STATE_RTS; | |
2619 | ||
2620 | /* bind QP and TID with INIT_WR */ | |
2621 | mask = C4IW_QP_ATTR_NEXT_STATE | | |
2622 | C4IW_QP_ATTR_LLP_STREAM_HANDLE | | |
2623 | C4IW_QP_ATTR_MPA_ATTR | | |
2624 | C4IW_QP_ATTR_MAX_IRD | | |
2625 | C4IW_QP_ATTR_MAX_ORD; | |
2626 | ||
2627 | err = c4iw_modify_qp(ep->com.qp->rhp, | |
2628 | ep->com.qp, mask, &attrs, 1); | |
2629 | if (err) | |
2630 | goto err1; | |
2631 | err = send_mpa_reply(ep, conn_param->private_data, | |
2632 | conn_param->private_data_len); | |
2633 | if (err) | |
2634 | goto err1; | |
2635 | ||
a7db89eb | 2636 | __state_set(&ep->com, FPDU_MODE); |
cfdda9d7 | 2637 | established_upcall(ep); |
a7db89eb | 2638 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
2639 | c4iw_put_ep(&ep->com); |
2640 | return 0; | |
2641 | err1: | |
2642 | ep->com.cm_id = NULL; | |
cfdda9d7 SW |
2643 | cm_id->rem_ref(cm_id); |
2644 | err: | |
a7db89eb | 2645 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
2646 | c4iw_put_ep(&ep->com); |
2647 | return err; | |
2648 | } | |
2649 | ||
830662f6 VP |
2650 | static int pick_local_ipaddrs(struct c4iw_dev *dev, struct iw_cm_id *cm_id) |
2651 | { | |
2652 | struct in_device *ind; | |
2653 | int found = 0; | |
2654 | struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr; | |
2655 | struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr; | |
2656 | ||
2657 | ind = in_dev_get(dev->rdev.lldi.ports[0]); | |
2658 | if (!ind) | |
2659 | return -EADDRNOTAVAIL; | |
2660 | for_primary_ifa(ind) { | |
2661 | laddr->sin_addr.s_addr = ifa->ifa_address; | |
2662 | raddr->sin_addr.s_addr = ifa->ifa_address; | |
2663 | found = 1; | |
2664 | break; | |
2665 | } | |
2666 | endfor_ifa(ind); | |
2667 | in_dev_put(ind); | |
2668 | return found ? 0 : -EADDRNOTAVAIL; | |
2669 | } | |
2670 | ||
2671 | static int get_lladdr(struct net_device *dev, struct in6_addr *addr, | |
2672 | unsigned char banned_flags) | |
2673 | { | |
2674 | struct inet6_dev *idev; | |
2675 | int err = -EADDRNOTAVAIL; | |
2676 | ||
2677 | rcu_read_lock(); | |
2678 | idev = __in6_dev_get(dev); | |
2679 | if (idev != NULL) { | |
2680 | struct inet6_ifaddr *ifp; | |
2681 | ||
2682 | read_lock_bh(&idev->lock); | |
2683 | list_for_each_entry(ifp, &idev->addr_list, if_list) { | |
2684 | if (ifp->scope == IFA_LINK && | |
2685 | !(ifp->flags & banned_flags)) { | |
2686 | memcpy(addr, &ifp->addr, 16); | |
2687 | err = 0; | |
2688 | break; | |
2689 | } | |
2690 | } | |
2691 | read_unlock_bh(&idev->lock); | |
2692 | } | |
2693 | rcu_read_unlock(); | |
2694 | return err; | |
2695 | } | |
2696 | ||
2697 | static int pick_local_ip6addrs(struct c4iw_dev *dev, struct iw_cm_id *cm_id) | |
2698 | { | |
2699 | struct in6_addr uninitialized_var(addr); | |
2700 | struct sockaddr_in6 *la6 = (struct sockaddr_in6 *)&cm_id->local_addr; | |
2701 | struct sockaddr_in6 *ra6 = (struct sockaddr_in6 *)&cm_id->remote_addr; | |
2702 | ||
2703 | if (get_lladdr(dev->rdev.lldi.ports[0], &addr, IFA_F_TENTATIVE)) { | |
2704 | memcpy(la6->sin6_addr.s6_addr, &addr, 16); | |
2705 | memcpy(ra6->sin6_addr.s6_addr, &addr, 16); | |
2706 | return 0; | |
2707 | } | |
2708 | return -EADDRNOTAVAIL; | |
2709 | } | |
2710 | ||
cfdda9d7 SW |
2711 | int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) |
2712 | { | |
cfdda9d7 SW |
2713 | struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); |
2714 | struct c4iw_ep *ep; | |
3786cf18 | 2715 | int err = 0; |
24d44a39 SW |
2716 | struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr; |
2717 | struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr; | |
830662f6 VP |
2718 | struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *)&cm_id->local_addr; |
2719 | struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *) | |
2720 | &cm_id->remote_addr; | |
2721 | __u8 *ra; | |
2722 | int iptype; | |
cfdda9d7 | 2723 | |
be4c9bad RD |
2724 | if ((conn_param->ord > c4iw_max_read_depth) || |
2725 | (conn_param->ird > c4iw_max_read_depth)) { | |
2726 | err = -EINVAL; | |
2727 | goto out; | |
2728 | } | |
cfdda9d7 SW |
2729 | ep = alloc_ep(sizeof(*ep), GFP_KERNEL); |
2730 | if (!ep) { | |
2731 | printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); | |
2732 | err = -ENOMEM; | |
2733 | goto out; | |
2734 | } | |
2735 | init_timer(&ep->timer); | |
2736 | ep->plen = conn_param->private_data_len; | |
2737 | if (ep->plen) | |
2738 | memcpy(ep->mpa_pkt + sizeof(struct mpa_message), | |
2739 | conn_param->private_data, ep->plen); | |
2740 | ep->ird = conn_param->ird; | |
2741 | ep->ord = conn_param->ord; | |
2742 | ||
2743 | if (peer2peer && ep->ord == 0) | |
2744 | ep->ord = 1; | |
2745 | ||
2746 | cm_id->add_ref(cm_id); | |
2747 | ep->com.dev = dev; | |
2748 | ep->com.cm_id = cm_id; | |
2749 | ep->com.qp = get_qhp(dev, conn_param->qpn); | |
830662f6 VP |
2750 | if (!ep->com.qp) { |
2751 | PDBG("%s qpn 0x%x not found!\n", __func__, conn_param->qpn); | |
2752 | err = -EINVAL; | |
2753 | goto fail2; | |
2754 | } | |
325abead | 2755 | ref_qp(ep); |
cfdda9d7 SW |
2756 | PDBG("%s qpn 0x%x qp %p cm_id %p\n", __func__, conn_param->qpn, |
2757 | ep->com.qp, cm_id); | |
2758 | ||
2759 | /* | |
2760 | * Allocate an active TID to initiate a TCP connection. | |
2761 | */ | |
2762 | ep->atid = cxgb4_alloc_atid(dev->rdev.lldi.tids, ep); | |
2763 | if (ep->atid == -1) { | |
2764 | printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __func__); | |
2765 | err = -ENOMEM; | |
2766 | goto fail2; | |
2767 | } | |
793dad94 | 2768 | insert_handle(dev, &dev->atid_idr, ep, ep->atid); |
cfdda9d7 | 2769 | |
830662f6 VP |
2770 | if (cm_id->remote_addr.ss_family == AF_INET) { |
2771 | iptype = 4; | |
2772 | ra = (__u8 *)&raddr->sin_addr; | |
cfdda9d7 | 2773 | |
830662f6 VP |
2774 | /* |
2775 | * Handle loopback requests to INADDR_ANY. | |
2776 | */ | |
2777 | if ((__force int)raddr->sin_addr.s_addr == INADDR_ANY) { | |
2778 | err = pick_local_ipaddrs(dev, cm_id); | |
2779 | if (err) | |
2780 | goto fail2; | |
2781 | } | |
2782 | ||
2783 | /* find a route */ | |
2784 | PDBG("%s saddr %pI4 sport 0x%x raddr %pI4 rport 0x%x\n", | |
2785 | __func__, &laddr->sin_addr, ntohs(laddr->sin_port), | |
2786 | ra, ntohs(raddr->sin_port)); | |
2787 | ep->dst = find_route(dev, laddr->sin_addr.s_addr, | |
2788 | raddr->sin_addr.s_addr, laddr->sin_port, | |
2789 | raddr->sin_port, 0); | |
2790 | } else { | |
2791 | iptype = 6; | |
2792 | ra = (__u8 *)&raddr6->sin6_addr; | |
2793 | ||
2794 | /* | |
2795 | * Handle loopback requests to INADDR_ANY. | |
2796 | */ | |
2797 | if (ipv6_addr_type(&raddr6->sin6_addr) == IPV6_ADDR_ANY) { | |
2798 | err = pick_local_ip6addrs(dev, cm_id); | |
2799 | if (err) | |
2800 | goto fail2; | |
2801 | } | |
2802 | ||
2803 | /* find a route */ | |
2804 | PDBG("%s saddr %pI6 sport 0x%x raddr %pI6 rport 0x%x\n", | |
2805 | __func__, laddr6->sin6_addr.s6_addr, | |
2806 | ntohs(laddr6->sin6_port), | |
2807 | raddr6->sin6_addr.s6_addr, ntohs(raddr6->sin6_port)); | |
2808 | ep->dst = find_route6(dev, laddr6->sin6_addr.s6_addr, | |
2809 | raddr6->sin6_addr.s6_addr, | |
2810 | laddr6->sin6_port, raddr6->sin6_port, 0, | |
2811 | raddr6->sin6_scope_id); | |
2812 | } | |
2813 | if (!ep->dst) { | |
cfdda9d7 SW |
2814 | printk(KERN_ERR MOD "%s - cannot find route.\n", __func__); |
2815 | err = -EHOSTUNREACH; | |
2816 | goto fail3; | |
2817 | } | |
cfdda9d7 | 2818 | |
830662f6 | 2819 | err = import_ep(ep, iptype, ra, ep->dst, ep->com.dev, true); |
3786cf18 | 2820 | if (err) { |
cfdda9d7 | 2821 | printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__); |
cfdda9d7 SW |
2822 | goto fail4; |
2823 | } | |
2824 | ||
2825 | PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n", | |
2826 | __func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid, | |
2827 | ep->l2t->idx); | |
2828 | ||
2829 | state_set(&ep->com, CONNECTING); | |
2830 | ep->tos = 0; | |
24d44a39 SW |
2831 | memcpy(&ep->com.local_addr, &cm_id->local_addr, |
2832 | sizeof(ep->com.local_addr)); | |
2833 | memcpy(&ep->com.remote_addr, &cm_id->remote_addr, | |
2834 | sizeof(ep->com.remote_addr)); | |
cfdda9d7 SW |
2835 | |
2836 | /* send connect request to rnic */ | |
2837 | err = send_connect(ep); | |
2838 | if (!err) | |
2839 | goto out; | |
2840 | ||
2841 | cxgb4_l2t_release(ep->l2t); | |
2842 | fail4: | |
2843 | dst_release(ep->dst); | |
2844 | fail3: | |
793dad94 | 2845 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid); |
cfdda9d7 SW |
2846 | cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid); |
2847 | fail2: | |
2848 | cm_id->rem_ref(cm_id); | |
2849 | c4iw_put_ep(&ep->com); | |
2850 | out: | |
2851 | return err; | |
2852 | } | |
2853 | ||
830662f6 VP |
2854 | static int create_server6(struct c4iw_dev *dev, struct c4iw_listen_ep *ep) |
2855 | { | |
2856 | int err; | |
2857 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&ep->com.local_addr; | |
2858 | ||
2859 | c4iw_init_wr_wait(&ep->com.wr_wait); | |
2860 | err = cxgb4_create_server6(ep->com.dev->rdev.lldi.ports[0], | |
2861 | ep->stid, &sin6->sin6_addr, | |
2862 | sin6->sin6_port, | |
2863 | ep->com.dev->rdev.lldi.rxq_ids[0]); | |
2864 | if (!err) | |
2865 | err = c4iw_wait_for_reply(&ep->com.dev->rdev, | |
2866 | &ep->com.wr_wait, | |
2867 | 0, 0, __func__); | |
2868 | if (err) | |
2869 | pr_err("cxgb4_create_server6/filter failed err %d stid %d laddr %pI6 lport %d\n", | |
2870 | err, ep->stid, | |
2871 | sin6->sin6_addr.s6_addr, ntohs(sin6->sin6_port)); | |
2872 | return err; | |
2873 | } | |
2874 | ||
2875 | static int create_server4(struct c4iw_dev *dev, struct c4iw_listen_ep *ep) | |
2876 | { | |
2877 | int err; | |
2878 | struct sockaddr_in *sin = (struct sockaddr_in *)&ep->com.local_addr; | |
2879 | ||
2880 | if (dev->rdev.lldi.enable_fw_ofld_conn) { | |
2881 | do { | |
2882 | err = cxgb4_create_server_filter( | |
2883 | ep->com.dev->rdev.lldi.ports[0], ep->stid, | |
2884 | sin->sin_addr.s_addr, sin->sin_port, 0, | |
2885 | ep->com.dev->rdev.lldi.rxq_ids[0], 0, 0); | |
2886 | if (err == -EBUSY) { | |
2887 | set_current_state(TASK_UNINTERRUPTIBLE); | |
2888 | schedule_timeout(usecs_to_jiffies(100)); | |
2889 | } | |
2890 | } while (err == -EBUSY); | |
2891 | } else { | |
2892 | c4iw_init_wr_wait(&ep->com.wr_wait); | |
2893 | err = cxgb4_create_server(ep->com.dev->rdev.lldi.ports[0], | |
2894 | ep->stid, sin->sin_addr.s_addr, sin->sin_port, | |
2895 | 0, ep->com.dev->rdev.lldi.rxq_ids[0]); | |
2896 | if (!err) | |
2897 | err = c4iw_wait_for_reply(&ep->com.dev->rdev, | |
2898 | &ep->com.wr_wait, | |
2899 | 0, 0, __func__); | |
2900 | } | |
2901 | if (err) | |
2902 | pr_err("cxgb4_create_server/filter failed err %d stid %d laddr %pI4 lport %d\n" | |
2903 | , err, ep->stid, | |
2904 | &sin->sin_addr, ntohs(sin->sin_port)); | |
2905 | return err; | |
2906 | } | |
2907 | ||
cfdda9d7 SW |
2908 | int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog) |
2909 | { | |
2910 | int err = 0; | |
2911 | struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); | |
2912 | struct c4iw_listen_ep *ep; | |
2913 | ||
cfdda9d7 SW |
2914 | might_sleep(); |
2915 | ||
2916 | ep = alloc_ep(sizeof(*ep), GFP_KERNEL); | |
2917 | if (!ep) { | |
2918 | printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); | |
2919 | err = -ENOMEM; | |
2920 | goto fail1; | |
2921 | } | |
2922 | PDBG("%s ep %p\n", __func__, ep); | |
2923 | cm_id->add_ref(cm_id); | |
2924 | ep->com.cm_id = cm_id; | |
2925 | ep->com.dev = dev; | |
2926 | ep->backlog = backlog; | |
24d44a39 SW |
2927 | memcpy(&ep->com.local_addr, &cm_id->local_addr, |
2928 | sizeof(ep->com.local_addr)); | |
cfdda9d7 SW |
2929 | |
2930 | /* | |
2931 | * Allocate a server TID. | |
2932 | */ | |
8c044690 KS |
2933 | if (dev->rdev.lldi.enable_fw_ofld_conn && |
2934 | ep->com.local_addr.ss_family == AF_INET) | |
830662f6 VP |
2935 | ep->stid = cxgb4_alloc_sftid(dev->rdev.lldi.tids, |
2936 | cm_id->local_addr.ss_family, ep); | |
1cab775c | 2937 | else |
830662f6 VP |
2938 | ep->stid = cxgb4_alloc_stid(dev->rdev.lldi.tids, |
2939 | cm_id->local_addr.ss_family, ep); | |
1cab775c | 2940 | |
cfdda9d7 | 2941 | if (ep->stid == -1) { |
be4c9bad | 2942 | printk(KERN_ERR MOD "%s - cannot alloc stid.\n", __func__); |
cfdda9d7 SW |
2943 | err = -ENOMEM; |
2944 | goto fail2; | |
2945 | } | |
793dad94 | 2946 | insert_handle(dev, &dev->stid_idr, ep, ep->stid); |
cfdda9d7 | 2947 | state_set(&ep->com, LISTEN); |
830662f6 VP |
2948 | if (ep->com.local_addr.ss_family == AF_INET) |
2949 | err = create_server4(dev, ep); | |
2950 | else | |
2951 | err = create_server6(dev, ep); | |
cfdda9d7 SW |
2952 | if (!err) { |
2953 | cm_id->provider_data = ep; | |
2954 | goto out; | |
2955 | } | |
830662f6 VP |
2956 | cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid, |
2957 | ep->com.local_addr.ss_family); | |
cfdda9d7 SW |
2958 | fail2: |
2959 | cm_id->rem_ref(cm_id); | |
2960 | c4iw_put_ep(&ep->com); | |
2961 | fail1: | |
2962 | out: | |
2963 | return err; | |
2964 | } | |
2965 | ||
2966 | int c4iw_destroy_listen(struct iw_cm_id *cm_id) | |
2967 | { | |
2968 | int err; | |
2969 | struct c4iw_listen_ep *ep = to_listen_ep(cm_id); | |
2970 | ||
2971 | PDBG("%s ep %p\n", __func__, ep); | |
2972 | ||
2973 | might_sleep(); | |
2974 | state_set(&ep->com, DEAD); | |
830662f6 VP |
2975 | if (ep->com.dev->rdev.lldi.enable_fw_ofld_conn && |
2976 | ep->com.local_addr.ss_family == AF_INET) { | |
1cab775c VP |
2977 | err = cxgb4_remove_server_filter( |
2978 | ep->com.dev->rdev.lldi.ports[0], ep->stid, | |
2979 | ep->com.dev->rdev.lldi.rxq_ids[0], 0); | |
2980 | } else { | |
2981 | c4iw_init_wr_wait(&ep->com.wr_wait); | |
830662f6 VP |
2982 | err = cxgb4_remove_server( |
2983 | ep->com.dev->rdev.lldi.ports[0], ep->stid, | |
2984 | ep->com.dev->rdev.lldi.rxq_ids[0], 0); | |
1cab775c VP |
2985 | if (err) |
2986 | goto done; | |
2987 | err = c4iw_wait_for_reply(&ep->com.dev->rdev, &ep->com.wr_wait, | |
2988 | 0, 0, __func__); | |
2989 | } | |
793dad94 | 2990 | remove_handle(ep->com.dev, &ep->com.dev->stid_idr, ep->stid); |
830662f6 VP |
2991 | cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid, |
2992 | ep->com.local_addr.ss_family); | |
cfdda9d7 | 2993 | done: |
cfdda9d7 SW |
2994 | cm_id->rem_ref(cm_id); |
2995 | c4iw_put_ep(&ep->com); | |
2996 | return err; | |
2997 | } | |
2998 | ||
2999 | int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) | |
3000 | { | |
3001 | int ret = 0; | |
cfdda9d7 SW |
3002 | int close = 0; |
3003 | int fatal = 0; | |
3004 | struct c4iw_rdev *rdev; | |
cfdda9d7 | 3005 | |
2f5b48c3 | 3006 | mutex_lock(&ep->com.mutex); |
cfdda9d7 SW |
3007 | |
3008 | PDBG("%s ep %p state %s, abrupt %d\n", __func__, ep, | |
3009 | states[ep->com.state], abrupt); | |
3010 | ||
3011 | rdev = &ep->com.dev->rdev; | |
3012 | if (c4iw_fatal_error(rdev)) { | |
3013 | fatal = 1; | |
be13b2df | 3014 | close_complete_upcall(ep, -EIO); |
cfdda9d7 SW |
3015 | ep->com.state = DEAD; |
3016 | } | |
3017 | switch (ep->com.state) { | |
3018 | case MPA_REQ_WAIT: | |
3019 | case MPA_REQ_SENT: | |
3020 | case MPA_REQ_RCVD: | |
3021 | case MPA_REP_SENT: | |
3022 | case FPDU_MODE: | |
3023 | close = 1; | |
3024 | if (abrupt) | |
3025 | ep->com.state = ABORTING; | |
3026 | else { | |
3027 | ep->com.state = CLOSING; | |
ca5a2202 | 3028 | start_ep_timer(ep); |
cfdda9d7 SW |
3029 | } |
3030 | set_bit(CLOSE_SENT, &ep->com.flags); | |
3031 | break; | |
3032 | case CLOSING: | |
3033 | if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) { | |
3034 | close = 1; | |
3035 | if (abrupt) { | |
b33bd0cb | 3036 | (void)stop_ep_timer(ep); |
cfdda9d7 SW |
3037 | ep->com.state = ABORTING; |
3038 | } else | |
3039 | ep->com.state = MORIBUND; | |
3040 | } | |
3041 | break; | |
3042 | case MORIBUND: | |
3043 | case ABORTING: | |
3044 | case DEAD: | |
3045 | PDBG("%s ignoring disconnect ep %p state %u\n", | |
3046 | __func__, ep, ep->com.state); | |
3047 | break; | |
3048 | default: | |
3049 | BUG(); | |
3050 | break; | |
3051 | } | |
3052 | ||
cfdda9d7 | 3053 | if (close) { |
8da7e7a5 | 3054 | if (abrupt) { |
793dad94 | 3055 | set_bit(EP_DISC_ABORT, &ep->com.history); |
be13b2df | 3056 | close_complete_upcall(ep, -ECONNRESET); |
8da7e7a5 | 3057 | ret = send_abort(ep, NULL, gfp); |
793dad94 VP |
3058 | } else { |
3059 | set_bit(EP_DISC_CLOSE, &ep->com.history); | |
cfdda9d7 | 3060 | ret = send_halfclose(ep, gfp); |
793dad94 | 3061 | } |
cfdda9d7 SW |
3062 | if (ret) |
3063 | fatal = 1; | |
3064 | } | |
8da7e7a5 | 3065 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
3066 | if (fatal) |
3067 | release_ep_resources(ep); | |
3068 | return ret; | |
3069 | } | |
3070 | ||
1cab775c VP |
3071 | static void active_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb, |
3072 | struct cpl_fw6_msg_ofld_connection_wr_rpl *req) | |
3073 | { | |
3074 | struct c4iw_ep *ep; | |
793dad94 | 3075 | int atid = be32_to_cpu(req->tid); |
1cab775c | 3076 | |
ef5d6355 VP |
3077 | ep = (struct c4iw_ep *)lookup_atid(dev->rdev.lldi.tids, |
3078 | (__force u32) req->tid); | |
1cab775c VP |
3079 | if (!ep) |
3080 | return; | |
3081 | ||
3082 | switch (req->retval) { | |
3083 | case FW_ENOMEM: | |
793dad94 VP |
3084 | set_bit(ACT_RETRY_NOMEM, &ep->com.history); |
3085 | if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) { | |
3086 | send_fw_act_open_req(ep, atid); | |
3087 | return; | |
3088 | } | |
1cab775c | 3089 | case FW_EADDRINUSE: |
793dad94 VP |
3090 | set_bit(ACT_RETRY_INUSE, &ep->com.history); |
3091 | if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) { | |
3092 | send_fw_act_open_req(ep, atid); | |
3093 | return; | |
3094 | } | |
1cab775c VP |
3095 | break; |
3096 | default: | |
3097 | pr_info("%s unexpected ofld conn wr retval %d\n", | |
3098 | __func__, req->retval); | |
3099 | break; | |
3100 | } | |
793dad94 VP |
3101 | pr_err("active ofld_connect_wr failure %d atid %d\n", |
3102 | req->retval, atid); | |
3103 | mutex_lock(&dev->rdev.stats.lock); | |
3104 | dev->rdev.stats.act_ofld_conn_fails++; | |
3105 | mutex_unlock(&dev->rdev.stats.lock); | |
1cab775c | 3106 | connect_reply_upcall(ep, status2errno(req->retval)); |
793dad94 VP |
3107 | state_set(&ep->com, DEAD); |
3108 | remove_handle(dev, &dev->atid_idr, atid); | |
3109 | cxgb4_free_atid(dev->rdev.lldi.tids, atid); | |
3110 | dst_release(ep->dst); | |
3111 | cxgb4_l2t_release(ep->l2t); | |
3112 | c4iw_put_ep(&ep->com); | |
1cab775c VP |
3113 | } |
3114 | ||
3115 | static void passive_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb, | |
3116 | struct cpl_fw6_msg_ofld_connection_wr_rpl *req) | |
3117 | { | |
3118 | struct sk_buff *rpl_skb; | |
3119 | struct cpl_pass_accept_req *cpl; | |
3120 | int ret; | |
3121 | ||
710a3110 | 3122 | rpl_skb = (struct sk_buff *)(unsigned long)req->cookie; |
1cab775c VP |
3123 | BUG_ON(!rpl_skb); |
3124 | if (req->retval) { | |
3125 | PDBG("%s passive open failure %d\n", __func__, req->retval); | |
793dad94 VP |
3126 | mutex_lock(&dev->rdev.stats.lock); |
3127 | dev->rdev.stats.pas_ofld_conn_fails++; | |
3128 | mutex_unlock(&dev->rdev.stats.lock); | |
1cab775c VP |
3129 | kfree_skb(rpl_skb); |
3130 | } else { | |
3131 | cpl = (struct cpl_pass_accept_req *)cplhdr(rpl_skb); | |
3132 | OPCODE_TID(cpl) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ, | |
ef5d6355 VP |
3133 | (__force u32) htonl( |
3134 | (__force u32) req->tid))); | |
1cab775c VP |
3135 | ret = pass_accept_req(dev, rpl_skb); |
3136 | if (!ret) | |
3137 | kfree_skb(rpl_skb); | |
3138 | } | |
3139 | return; | |
3140 | } | |
3141 | ||
3142 | static int deferred_fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb) | |
2f5b48c3 SW |
3143 | { |
3144 | struct cpl_fw6_msg *rpl = cplhdr(skb); | |
1cab775c VP |
3145 | struct cpl_fw6_msg_ofld_connection_wr_rpl *req; |
3146 | ||
3147 | switch (rpl->type) { | |
3148 | case FW6_TYPE_CQE: | |
3149 | c4iw_ev_dispatch(dev, (struct t4_cqe *)&rpl->data[0]); | |
3150 | break; | |
3151 | case FW6_TYPE_OFLD_CONNECTION_WR_RPL: | |
3152 | req = (struct cpl_fw6_msg_ofld_connection_wr_rpl *)rpl->data; | |
3153 | switch (req->t_state) { | |
3154 | case TCP_SYN_SENT: | |
3155 | active_ofld_conn_reply(dev, skb, req); | |
3156 | break; | |
3157 | case TCP_SYN_RECV: | |
3158 | passive_ofld_conn_reply(dev, skb, req); | |
3159 | break; | |
3160 | default: | |
3161 | pr_err("%s unexpected ofld conn wr state %d\n", | |
3162 | __func__, req->t_state); | |
3163 | break; | |
3164 | } | |
3165 | break; | |
3166 | } | |
3167 | return 0; | |
3168 | } | |
3169 | ||
3170 | static void build_cpl_pass_accept_req(struct sk_buff *skb, int stid , u8 tos) | |
3171 | { | |
3172 | u32 l2info; | |
f079af7a | 3173 | u16 vlantag, len, hdr_len, eth_hdr_len; |
1cab775c VP |
3174 | u8 intf; |
3175 | struct cpl_rx_pkt *cpl = cplhdr(skb); | |
3176 | struct cpl_pass_accept_req *req; | |
3177 | struct tcp_options_received tmp_opt; | |
f079af7a | 3178 | struct c4iw_dev *dev; |
1cab775c | 3179 | |
f079af7a | 3180 | dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *))); |
1cab775c | 3181 | /* Store values from cpl_rx_pkt in temporary location. */ |
ef5d6355 VP |
3182 | vlantag = (__force u16) cpl->vlan; |
3183 | len = (__force u16) cpl->len; | |
3184 | l2info = (__force u32) cpl->l2info; | |
3185 | hdr_len = (__force u16) cpl->hdr_len; | |
1cab775c VP |
3186 | intf = cpl->iff; |
3187 | ||
3188 | __skb_pull(skb, sizeof(*req) + sizeof(struct rss_header)); | |
3189 | ||
3190 | /* | |
3191 | * We need to parse the TCP options from SYN packet. | |
3192 | * to generate cpl_pass_accept_req. | |
3193 | */ | |
3194 | memset(&tmp_opt, 0, sizeof(tmp_opt)); | |
3195 | tcp_clear_options(&tmp_opt); | |
1a2c6181 | 3196 | tcp_parse_options(skb, &tmp_opt, 0, NULL); |
1cab775c VP |
3197 | |
3198 | req = (struct cpl_pass_accept_req *)__skb_push(skb, sizeof(*req)); | |
3199 | memset(req, 0, sizeof(*req)); | |
3200 | req->l2info = cpu_to_be16(V_SYN_INTF(intf) | | |
ef5d6355 VP |
3201 | V_SYN_MAC_IDX(G_RX_MACIDX( |
3202 | (__force int) htonl(l2info))) | | |
1cab775c | 3203 | F_SYN_XACT_MATCH); |
f079af7a VP |
3204 | eth_hdr_len = is_t4(dev->rdev.lldi.adapter_type) ? |
3205 | G_RX_ETHHDR_LEN((__force int) htonl(l2info)) : | |
3206 | G_RX_T5_ETHHDR_LEN((__force int) htonl(l2info)); | |
ef5d6355 VP |
3207 | req->hdr_len = cpu_to_be32(V_SYN_RX_CHAN(G_RX_CHAN( |
3208 | (__force int) htonl(l2info))) | | |
3209 | V_TCP_HDR_LEN(G_RX_TCPHDR_LEN( | |
3210 | (__force int) htons(hdr_len))) | | |
3211 | V_IP_HDR_LEN(G_RX_IPHDR_LEN( | |
3212 | (__force int) htons(hdr_len))) | | |
f079af7a | 3213 | V_ETH_HDR_LEN(G_RX_ETHHDR_LEN(eth_hdr_len))); |
ef5d6355 VP |
3214 | req->vlan = (__force __be16) vlantag; |
3215 | req->len = (__force __be16) len; | |
1cab775c VP |
3216 | req->tos_stid = cpu_to_be32(PASS_OPEN_TID(stid) | |
3217 | PASS_OPEN_TOS(tos)); | |
3218 | req->tcpopt.mss = htons(tmp_opt.mss_clamp); | |
3219 | if (tmp_opt.wscale_ok) | |
3220 | req->tcpopt.wsf = tmp_opt.snd_wscale; | |
3221 | req->tcpopt.tstamp = tmp_opt.saw_tstamp; | |
3222 | if (tmp_opt.sack_ok) | |
3223 | req->tcpopt.sack = 1; | |
3224 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ, 0)); | |
3225 | return; | |
3226 | } | |
3227 | ||
3228 | static void send_fw_pass_open_req(struct c4iw_dev *dev, struct sk_buff *skb, | |
3229 | __be32 laddr, __be16 lport, | |
3230 | __be32 raddr, __be16 rport, | |
3231 | u32 rcv_isn, u32 filter, u16 window, | |
3232 | u32 rss_qid, u8 port_id) | |
3233 | { | |
3234 | struct sk_buff *req_skb; | |
3235 | struct fw_ofld_connection_wr *req; | |
3236 | struct cpl_pass_accept_req *cpl = cplhdr(skb); | |
1ce1d471 | 3237 | int ret; |
1cab775c VP |
3238 | |
3239 | req_skb = alloc_skb(sizeof(struct fw_ofld_connection_wr), GFP_KERNEL); | |
3240 | req = (struct fw_ofld_connection_wr *)__skb_put(req_skb, sizeof(*req)); | |
3241 | memset(req, 0, sizeof(*req)); | |
3242 | req->op_compl = htonl(V_WR_OP(FW_OFLD_CONNECTION_WR) | FW_WR_COMPL(1)); | |
3243 | req->len16_pkd = htonl(FW_WR_LEN16(DIV_ROUND_UP(sizeof(*req), 16))); | |
3244 | req->le.version_cpl = htonl(F_FW_OFLD_CONNECTION_WR_CPL); | |
ef5d6355 | 3245 | req->le.filter = (__force __be32) filter; |
1cab775c VP |
3246 | req->le.lport = lport; |
3247 | req->le.pport = rport; | |
3248 | req->le.u.ipv4.lip = laddr; | |
3249 | req->le.u.ipv4.pip = raddr; | |
3250 | req->tcb.rcv_nxt = htonl(rcv_isn + 1); | |
3251 | req->tcb.rcv_adv = htons(window); | |
3252 | req->tcb.t_state_to_astid = | |
3253 | htonl(V_FW_OFLD_CONNECTION_WR_T_STATE(TCP_SYN_RECV) | | |
3254 | V_FW_OFLD_CONNECTION_WR_RCV_SCALE(cpl->tcpopt.wsf) | | |
3255 | V_FW_OFLD_CONNECTION_WR_ASTID( | |
3256 | GET_PASS_OPEN_TID(ntohl(cpl->tos_stid)))); | |
3257 | ||
3258 | /* | |
3259 | * We store the qid in opt2 which will be used by the firmware | |
3260 | * to send us the wr response. | |
3261 | */ | |
3262 | req->tcb.opt2 = htonl(V_RSS_QUEUE(rss_qid)); | |
3263 | ||
3264 | /* | |
3265 | * We initialize the MSS index in TCB to 0xF. | |
3266 | * So that when driver sends cpl_pass_accept_rpl | |
3267 | * TCB picks up the correct value. If this was 0 | |
3268 | * TP will ignore any value > 0 for MSS index. | |
3269 | */ | |
3270 | req->tcb.opt0 = cpu_to_be64(V_MSS_IDX(0xF)); | |
710a3110 | 3271 | req->cookie = (unsigned long)skb; |
1cab775c VP |
3272 | |
3273 | set_wr_txq(req_skb, CPL_PRIORITY_CONTROL, port_id); | |
1ce1d471 SW |
3274 | ret = cxgb4_ofld_send(dev->rdev.lldi.ports[0], req_skb); |
3275 | if (ret < 0) { | |
3276 | pr_err("%s - cxgb4_ofld_send error %d - dropping\n", __func__, | |
3277 | ret); | |
3278 | kfree_skb(skb); | |
3279 | kfree_skb(req_skb); | |
3280 | } | |
1cab775c VP |
3281 | } |
3282 | ||
3283 | /* | |
3284 | * Handler for CPL_RX_PKT message. Need to handle cpl_rx_pkt | |
3285 | * messages when a filter is being used instead of server to | |
3286 | * redirect a syn packet. When packets hit filter they are redirected | |
3287 | * to the offload queue and driver tries to establish the connection | |
3288 | * using firmware work request. | |
3289 | */ | |
3290 | static int rx_pkt(struct c4iw_dev *dev, struct sk_buff *skb) | |
3291 | { | |
3292 | int stid; | |
3293 | unsigned int filter; | |
3294 | struct ethhdr *eh = NULL; | |
3295 | struct vlan_ethhdr *vlan_eh = NULL; | |
3296 | struct iphdr *iph; | |
3297 | struct tcphdr *tcph; | |
3298 | struct rss_header *rss = (void *)skb->data; | |
3299 | struct cpl_rx_pkt *cpl = (void *)skb->data; | |
3300 | struct cpl_pass_accept_req *req = (void *)(rss + 1); | |
3301 | struct l2t_entry *e; | |
3302 | struct dst_entry *dst; | |
1cab775c VP |
3303 | struct c4iw_ep *lep; |
3304 | u16 window; | |
3305 | struct port_info *pi; | |
3306 | struct net_device *pdev; | |
f079af7a | 3307 | u16 rss_qid, eth_hdr_len; |
1cab775c VP |
3308 | int step; |
3309 | u32 tx_chan; | |
3310 | struct neighbour *neigh; | |
3311 | ||
3312 | /* Drop all non-SYN packets */ | |
3313 | if (!(cpl->l2info & cpu_to_be32(F_RXF_SYN))) | |
3314 | goto reject; | |
3315 | ||
3316 | /* | |
3317 | * Drop all packets which did not hit the filter. | |
3318 | * Unlikely to happen. | |
3319 | */ | |
3320 | if (!(rss->filter_hit && rss->filter_tid)) | |
3321 | goto reject; | |
3322 | ||
3323 | /* | |
3324 | * Calculate the server tid from filter hit index from cpl_rx_pkt. | |
3325 | */ | |
a4ea025f | 3326 | stid = (__force int) cpu_to_be32((__force u32) rss->hash_val); |
1cab775c VP |
3327 | |
3328 | lep = (struct c4iw_ep *)lookup_stid(dev->rdev.lldi.tids, stid); | |
3329 | if (!lep) { | |
3330 | PDBG("%s connect request on invalid stid %d\n", __func__, stid); | |
3331 | goto reject; | |
3332 | } | |
3333 | ||
f079af7a VP |
3334 | eth_hdr_len = is_t4(dev->rdev.lldi.adapter_type) ? |
3335 | G_RX_ETHHDR_LEN(htonl(cpl->l2info)) : | |
3336 | G_RX_T5_ETHHDR_LEN(htonl(cpl->l2info)); | |
3337 | if (eth_hdr_len == ETH_HLEN) { | |
1cab775c VP |
3338 | eh = (struct ethhdr *)(req + 1); |
3339 | iph = (struct iphdr *)(eh + 1); | |
3340 | } else { | |
3341 | vlan_eh = (struct vlan_ethhdr *)(req + 1); | |
3342 | iph = (struct iphdr *)(vlan_eh + 1); | |
3343 | skb->vlan_tci = ntohs(cpl->vlan); | |
3344 | } | |
3345 | ||
3346 | if (iph->version != 0x4) | |
3347 | goto reject; | |
3348 | ||
3349 | tcph = (struct tcphdr *)(iph + 1); | |
3350 | skb_set_network_header(skb, (void *)iph - (void *)rss); | |
3351 | skb_set_transport_header(skb, (void *)tcph - (void *)rss); | |
3352 | skb_get(skb); | |
3353 | ||
3354 | PDBG("%s lip 0x%x lport %u pip 0x%x pport %u tos %d\n", __func__, | |
3355 | ntohl(iph->daddr), ntohs(tcph->dest), ntohl(iph->saddr), | |
3356 | ntohs(tcph->source), iph->tos); | |
3357 | ||
830662f6 VP |
3358 | dst = find_route(dev, iph->daddr, iph->saddr, tcph->dest, tcph->source, |
3359 | iph->tos); | |
3360 | if (!dst) { | |
1cab775c VP |
3361 | pr_err("%s - failed to find dst entry!\n", |
3362 | __func__); | |
3363 | goto reject; | |
3364 | } | |
1cab775c VP |
3365 | neigh = dst_neigh_lookup_skb(dst, skb); |
3366 | ||
aaa0c23c ZZ |
3367 | if (!neigh) { |
3368 | pr_err("%s - failed to allocate neigh!\n", | |
3369 | __func__); | |
3370 | goto free_dst; | |
3371 | } | |
3372 | ||
1cab775c VP |
3373 | if (neigh->dev->flags & IFF_LOOPBACK) { |
3374 | pdev = ip_dev_find(&init_net, iph->daddr); | |
3375 | e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh, | |
3376 | pdev, 0); | |
3377 | pi = (struct port_info *)netdev_priv(pdev); | |
3378 | tx_chan = cxgb4_port_chan(pdev); | |
3379 | dev_put(pdev); | |
3380 | } else { | |
830662f6 | 3381 | pdev = get_real_dev(neigh->dev); |
1cab775c | 3382 | e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh, |
830662f6 VP |
3383 | pdev, 0); |
3384 | pi = (struct port_info *)netdev_priv(pdev); | |
3385 | tx_chan = cxgb4_port_chan(pdev); | |
1cab775c | 3386 | } |
ebf00060 | 3387 | neigh_release(neigh); |
1cab775c VP |
3388 | if (!e) { |
3389 | pr_err("%s - failed to allocate l2t entry!\n", | |
3390 | __func__); | |
3391 | goto free_dst; | |
3392 | } | |
3393 | ||
3394 | step = dev->rdev.lldi.nrxq / dev->rdev.lldi.nchan; | |
3395 | rss_qid = dev->rdev.lldi.rxq_ids[pi->port_id * step]; | |
ef5d6355 | 3396 | window = (__force u16) htons((__force u16)tcph->window); |
1cab775c VP |
3397 | |
3398 | /* Calcuate filter portion for LE region. */ | |
41b4f86c KS |
3399 | filter = (__force unsigned int) cpu_to_be32(cxgb4_select_ntuple( |
3400 | dev->rdev.lldi.ports[0], | |
3401 | e)); | |
1cab775c VP |
3402 | |
3403 | /* | |
3404 | * Synthesize the cpl_pass_accept_req. We have everything except the | |
3405 | * TID. Once firmware sends a reply with TID we update the TID field | |
3406 | * in cpl and pass it through the regular cpl_pass_accept_req path. | |
3407 | */ | |
3408 | build_cpl_pass_accept_req(skb, stid, iph->tos); | |
3409 | send_fw_pass_open_req(dev, skb, iph->daddr, tcph->dest, iph->saddr, | |
3410 | tcph->source, ntohl(tcph->seq), filter, window, | |
3411 | rss_qid, pi->port_id); | |
3412 | cxgb4_l2t_release(e); | |
3413 | free_dst: | |
3414 | dst_release(dst); | |
3415 | reject: | |
2f5b48c3 SW |
3416 | return 0; |
3417 | } | |
3418 | ||
be4c9bad RD |
3419 | /* |
3420 | * These are the real handlers that are called from a | |
3421 | * work queue. | |
3422 | */ | |
3423 | static c4iw_handler_func work_handlers[NUM_CPL_CMDS] = { | |
3424 | [CPL_ACT_ESTABLISH] = act_establish, | |
3425 | [CPL_ACT_OPEN_RPL] = act_open_rpl, | |
3426 | [CPL_RX_DATA] = rx_data, | |
3427 | [CPL_ABORT_RPL_RSS] = abort_rpl, | |
3428 | [CPL_ABORT_RPL] = abort_rpl, | |
3429 | [CPL_PASS_OPEN_RPL] = pass_open_rpl, | |
3430 | [CPL_CLOSE_LISTSRV_RPL] = close_listsrv_rpl, | |
3431 | [CPL_PASS_ACCEPT_REQ] = pass_accept_req, | |
3432 | [CPL_PASS_ESTABLISH] = pass_establish, | |
3433 | [CPL_PEER_CLOSE] = peer_close, | |
3434 | [CPL_ABORT_REQ_RSS] = peer_abort, | |
3435 | [CPL_CLOSE_CON_RPL] = close_con_rpl, | |
3436 | [CPL_RDMA_TERMINATE] = terminate, | |
2f5b48c3 | 3437 | [CPL_FW4_ACK] = fw4_ack, |
1cab775c VP |
3438 | [CPL_FW6_MSG] = deferred_fw6_msg, |
3439 | [CPL_RX_PKT] = rx_pkt | |
be4c9bad RD |
3440 | }; |
3441 | ||
3442 | static void process_timeout(struct c4iw_ep *ep) | |
3443 | { | |
3444 | struct c4iw_qp_attributes attrs; | |
3445 | int abort = 1; | |
3446 | ||
2f5b48c3 | 3447 | mutex_lock(&ep->com.mutex); |
be4c9bad RD |
3448 | PDBG("%s ep %p tid %u state %d\n", __func__, ep, ep->hwtid, |
3449 | ep->com.state); | |
793dad94 | 3450 | set_bit(TIMEDOUT, &ep->com.history); |
be4c9bad RD |
3451 | switch (ep->com.state) { |
3452 | case MPA_REQ_SENT: | |
3453 | __state_set(&ep->com, ABORTING); | |
3454 | connect_reply_upcall(ep, -ETIMEDOUT); | |
3455 | break; | |
3456 | case MPA_REQ_WAIT: | |
3457 | __state_set(&ep->com, ABORTING); | |
3458 | break; | |
3459 | case CLOSING: | |
3460 | case MORIBUND: | |
3461 | if (ep->com.cm_id && ep->com.qp) { | |
3462 | attrs.next_state = C4IW_QP_STATE_ERROR; | |
3463 | c4iw_modify_qp(ep->com.qp->rhp, | |
3464 | ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, | |
3465 | &attrs, 1); | |
3466 | } | |
3467 | __state_set(&ep->com, ABORTING); | |
be13b2df | 3468 | close_complete_upcall(ep, -ETIMEDOUT); |
be4c9bad | 3469 | break; |
b33bd0cb SW |
3470 | case ABORTING: |
3471 | case DEAD: | |
3472 | ||
3473 | /* | |
3474 | * These states are expected if the ep timed out at the same | |
3475 | * time as another thread was calling stop_ep_timer(). | |
3476 | * So we silently do nothing for these states. | |
3477 | */ | |
3478 | abort = 0; | |
3479 | break; | |
be4c9bad | 3480 | default: |
76f267b7 | 3481 | WARN(1, "%s unexpected state ep %p tid %u state %u\n", |
be4c9bad | 3482 | __func__, ep, ep->hwtid, ep->com.state); |
be4c9bad RD |
3483 | abort = 0; |
3484 | } | |
2f5b48c3 | 3485 | mutex_unlock(&ep->com.mutex); |
be4c9bad RD |
3486 | if (abort) |
3487 | abort_connection(ep, NULL, GFP_KERNEL); | |
3488 | c4iw_put_ep(&ep->com); | |
3489 | } | |
3490 | ||
3491 | static void process_timedout_eps(void) | |
3492 | { | |
3493 | struct c4iw_ep *ep; | |
3494 | ||
3495 | spin_lock_irq(&timeout_lock); | |
3496 | while (!list_empty(&timeout_list)) { | |
3497 | struct list_head *tmp; | |
3498 | ||
3499 | tmp = timeout_list.next; | |
3500 | list_del(tmp); | |
b33bd0cb SW |
3501 | tmp->next = NULL; |
3502 | tmp->prev = NULL; | |
be4c9bad RD |
3503 | spin_unlock_irq(&timeout_lock); |
3504 | ep = list_entry(tmp, struct c4iw_ep, entry); | |
3505 | process_timeout(ep); | |
3506 | spin_lock_irq(&timeout_lock); | |
3507 | } | |
3508 | spin_unlock_irq(&timeout_lock); | |
3509 | } | |
3510 | ||
3511 | static void process_work(struct work_struct *work) | |
3512 | { | |
3513 | struct sk_buff *skb = NULL; | |
3514 | struct c4iw_dev *dev; | |
c1d7356c | 3515 | struct cpl_act_establish *rpl; |
be4c9bad RD |
3516 | unsigned int opcode; |
3517 | int ret; | |
3518 | ||
b33bd0cb | 3519 | process_timedout_eps(); |
be4c9bad RD |
3520 | while ((skb = skb_dequeue(&rxq))) { |
3521 | rpl = cplhdr(skb); | |
3522 | dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *))); | |
3523 | opcode = rpl->ot.opcode; | |
3524 | ||
3525 | BUG_ON(!work_handlers[opcode]); | |
3526 | ret = work_handlers[opcode](dev, skb); | |
3527 | if (!ret) | |
3528 | kfree_skb(skb); | |
b33bd0cb | 3529 | process_timedout_eps(); |
be4c9bad | 3530 | } |
be4c9bad RD |
3531 | } |
3532 | ||
3533 | static DECLARE_WORK(skb_work, process_work); | |
3534 | ||
3535 | static void ep_timeout(unsigned long arg) | |
3536 | { | |
3537 | struct c4iw_ep *ep = (struct c4iw_ep *)arg; | |
1ec779cc | 3538 | int kickit = 0; |
be4c9bad RD |
3539 | |
3540 | spin_lock(&timeout_lock); | |
1ec779cc | 3541 | if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { |
b33bd0cb SW |
3542 | /* |
3543 | * Only insert if it is not already on the list. | |
3544 | */ | |
3545 | if (!ep->entry.next) { | |
3546 | list_add_tail(&ep->entry, &timeout_list); | |
3547 | kickit = 1; | |
3548 | } | |
1ec779cc | 3549 | } |
be4c9bad | 3550 | spin_unlock(&timeout_lock); |
1ec779cc VP |
3551 | if (kickit) |
3552 | queue_work(workq, &skb_work); | |
be4c9bad RD |
3553 | } |
3554 | ||
cfdda9d7 SW |
3555 | /* |
3556 | * All the CM events are handled on a work queue to have a safe context. | |
3557 | */ | |
3558 | static int sched(struct c4iw_dev *dev, struct sk_buff *skb) | |
3559 | { | |
3560 | ||
3561 | /* | |
3562 | * Save dev in the skb->cb area. | |
3563 | */ | |
3564 | *((struct c4iw_dev **) (skb->cb + sizeof(void *))) = dev; | |
3565 | ||
3566 | /* | |
3567 | * Queue the skb and schedule the worker thread. | |
3568 | */ | |
3569 | skb_queue_tail(&rxq, skb); | |
3570 | queue_work(workq, &skb_work); | |
3571 | return 0; | |
3572 | } | |
3573 | ||
3574 | static int set_tcb_rpl(struct c4iw_dev *dev, struct sk_buff *skb) | |
3575 | { | |
3576 | struct cpl_set_tcb_rpl *rpl = cplhdr(skb); | |
3577 | ||
3578 | if (rpl->status != CPL_ERR_NONE) { | |
3579 | printk(KERN_ERR MOD "Unexpected SET_TCB_RPL status %u " | |
3580 | "for tid %u\n", rpl->status, GET_TID(rpl)); | |
3581 | } | |
2f5b48c3 | 3582 | kfree_skb(skb); |
cfdda9d7 SW |
3583 | return 0; |
3584 | } | |
3585 | ||
be4c9bad RD |
3586 | static int fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb) |
3587 | { | |
3588 | struct cpl_fw6_msg *rpl = cplhdr(skb); | |
3589 | struct c4iw_wr_wait *wr_waitp; | |
3590 | int ret; | |
3591 | ||
3592 | PDBG("%s type %u\n", __func__, rpl->type); | |
3593 | ||
3594 | switch (rpl->type) { | |
5be78ee9 | 3595 | case FW6_TYPE_WR_RPL: |
be4c9bad | 3596 | ret = (int)((be64_to_cpu(rpl->data[0]) >> 8) & 0xff); |
c8e081a1 | 3597 | wr_waitp = (struct c4iw_wr_wait *)(__force unsigned long) rpl->data[1]; |
be4c9bad | 3598 | PDBG("%s wr_waitp %p ret %u\n", __func__, wr_waitp, ret); |
d9594d99 SW |
3599 | if (wr_waitp) |
3600 | c4iw_wake_up(wr_waitp, ret ? -ret : 0); | |
2f5b48c3 | 3601 | kfree_skb(skb); |
be4c9bad | 3602 | break; |
5be78ee9 | 3603 | case FW6_TYPE_CQE: |
5be78ee9 | 3604 | case FW6_TYPE_OFLD_CONNECTION_WR_RPL: |
1cab775c | 3605 | sched(dev, skb); |
5be78ee9 | 3606 | break; |
be4c9bad RD |
3607 | default: |
3608 | printk(KERN_ERR MOD "%s unexpected fw6 msg type %u\n", __func__, | |
3609 | rpl->type); | |
2f5b48c3 | 3610 | kfree_skb(skb); |
be4c9bad RD |
3611 | break; |
3612 | } | |
3613 | return 0; | |
3614 | } | |
3615 | ||
8da7e7a5 SW |
3616 | static int peer_abort_intr(struct c4iw_dev *dev, struct sk_buff *skb) |
3617 | { | |
3618 | struct cpl_abort_req_rss *req = cplhdr(skb); | |
3619 | struct c4iw_ep *ep; | |
3620 | struct tid_info *t = dev->rdev.lldi.tids; | |
3621 | unsigned int tid = GET_TID(req); | |
3622 | ||
3623 | ep = lookup_tid(t, tid); | |
14b92228 SW |
3624 | if (!ep) { |
3625 | printk(KERN_WARNING MOD | |
3626 | "Abort on non-existent endpoint, tid %d\n", tid); | |
3627 | kfree_skb(skb); | |
3628 | return 0; | |
3629 | } | |
7a2cea2a | 3630 | if (is_neg_adv(req->status)) { |
8da7e7a5 SW |
3631 | PDBG("%s neg_adv_abort ep %p tid %u\n", __func__, ep, |
3632 | ep->hwtid); | |
3633 | kfree_skb(skb); | |
3634 | return 0; | |
3635 | } | |
3636 | PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid, | |
3637 | ep->com.state); | |
3638 | ||
3639 | /* | |
3640 | * Wake up any threads in rdma_init() or rdma_fini(). | |
7c0a33d6 VP |
3641 | * However, if we are on MPAv2 and want to retry with MPAv1 |
3642 | * then, don't wake up yet. | |
8da7e7a5 | 3643 | */ |
7c0a33d6 VP |
3644 | if (mpa_rev == 2 && !ep->tried_with_mpa_v1) { |
3645 | if (ep->com.state != MPA_REQ_SENT) | |
3646 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); | |
3647 | } else | |
3648 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); | |
8da7e7a5 SW |
3649 | sched(dev, skb); |
3650 | return 0; | |
3651 | } | |
3652 | ||
be4c9bad RD |
3653 | /* |
3654 | * Most upcalls from the T4 Core go to sched() to | |
3655 | * schedule the processing on a work queue. | |
3656 | */ | |
3657 | c4iw_handler_func c4iw_handlers[NUM_CPL_CMDS] = { | |
3658 | [CPL_ACT_ESTABLISH] = sched, | |
3659 | [CPL_ACT_OPEN_RPL] = sched, | |
3660 | [CPL_RX_DATA] = sched, | |
3661 | [CPL_ABORT_RPL_RSS] = sched, | |
3662 | [CPL_ABORT_RPL] = sched, | |
3663 | [CPL_PASS_OPEN_RPL] = sched, | |
3664 | [CPL_CLOSE_LISTSRV_RPL] = sched, | |
3665 | [CPL_PASS_ACCEPT_REQ] = sched, | |
3666 | [CPL_PASS_ESTABLISH] = sched, | |
3667 | [CPL_PEER_CLOSE] = sched, | |
3668 | [CPL_CLOSE_CON_RPL] = sched, | |
8da7e7a5 | 3669 | [CPL_ABORT_REQ_RSS] = peer_abort_intr, |
be4c9bad RD |
3670 | [CPL_RDMA_TERMINATE] = sched, |
3671 | [CPL_FW4_ACK] = sched, | |
3672 | [CPL_SET_TCB_RPL] = set_tcb_rpl, | |
1cab775c VP |
3673 | [CPL_FW6_MSG] = fw6_msg, |
3674 | [CPL_RX_PKT] = sched | |
be4c9bad RD |
3675 | }; |
3676 | ||
cfdda9d7 SW |
3677 | int __init c4iw_cm_init(void) |
3678 | { | |
be4c9bad | 3679 | spin_lock_init(&timeout_lock); |
cfdda9d7 SW |
3680 | skb_queue_head_init(&rxq); |
3681 | ||
3682 | workq = create_singlethread_workqueue("iw_cxgb4"); | |
3683 | if (!workq) | |
3684 | return -ENOMEM; | |
3685 | ||
cfdda9d7 SW |
3686 | return 0; |
3687 | } | |
3688 | ||
3689 | void __exit c4iw_cm_term(void) | |
3690 | { | |
be4c9bad | 3691 | WARN_ON(!list_empty(&timeout_list)); |
cfdda9d7 SW |
3692 | flush_workqueue(workq); |
3693 | destroy_workqueue(workq); | |
3694 | } |