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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> | |
41 | ||
42 | #include <net/neighbour.h> | |
43 | #include <net/netevent.h> | |
44 | #include <net/route.h> | |
45 | ||
46 | #include "iw_cxgb4.h" | |
47 | ||
48 | static char *states[] = { | |
49 | "idle", | |
50 | "listen", | |
51 | "connecting", | |
52 | "mpa_wait_req", | |
53 | "mpa_req_sent", | |
54 | "mpa_req_rcvd", | |
55 | "mpa_rep_sent", | |
56 | "fpdu_mode", | |
57 | "aborting", | |
58 | "closing", | |
59 | "moribund", | |
60 | "dead", | |
61 | NULL, | |
62 | }; | |
63 | ||
ba6d3925 SW |
64 | static int dack_mode; |
65 | module_param(dack_mode, int, 0644); | |
66 | MODULE_PARM_DESC(dack_mode, "Delayed ack mode (default=0)"); | |
67 | ||
be4c9bad RD |
68 | int c4iw_max_read_depth = 8; |
69 | module_param(c4iw_max_read_depth, int, 0644); | |
70 | MODULE_PARM_DESC(c4iw_max_read_depth, "Per-connection max ORD/IRD (default=8)"); | |
71 | ||
cfdda9d7 SW |
72 | static int enable_tcp_timestamps; |
73 | module_param(enable_tcp_timestamps, int, 0644); | |
74 | MODULE_PARM_DESC(enable_tcp_timestamps, "Enable tcp timestamps (default=0)"); | |
75 | ||
76 | static int enable_tcp_sack; | |
77 | module_param(enable_tcp_sack, int, 0644); | |
78 | MODULE_PARM_DESC(enable_tcp_sack, "Enable tcp SACK (default=0)"); | |
79 | ||
80 | static int enable_tcp_window_scaling = 1; | |
81 | module_param(enable_tcp_window_scaling, int, 0644); | |
82 | MODULE_PARM_DESC(enable_tcp_window_scaling, | |
83 | "Enable tcp window scaling (default=1)"); | |
84 | ||
85 | int c4iw_debug; | |
86 | module_param(c4iw_debug, int, 0644); | |
87 | MODULE_PARM_DESC(c4iw_debug, "Enable debug logging (default=0)"); | |
88 | ||
89 | static int peer2peer; | |
90 | module_param(peer2peer, int, 0644); | |
91 | MODULE_PARM_DESC(peer2peer, "Support peer2peer ULPs (default=0)"); | |
92 | ||
93 | static int p2p_type = FW_RI_INIT_P2PTYPE_READ_REQ; | |
94 | module_param(p2p_type, int, 0644); | |
95 | MODULE_PARM_DESC(p2p_type, "RDMAP opcode to use for the RTR message: " | |
96 | "1=RDMA_READ 0=RDMA_WRITE (default 1)"); | |
97 | ||
98 | static int ep_timeout_secs = 60; | |
99 | module_param(ep_timeout_secs, int, 0644); | |
100 | MODULE_PARM_DESC(ep_timeout_secs, "CM Endpoint operation timeout " | |
101 | "in seconds (default=60)"); | |
102 | ||
103 | static int mpa_rev = 1; | |
104 | module_param(mpa_rev, int, 0644); | |
105 | MODULE_PARM_DESC(mpa_rev, "MPA Revision, 0 supports amso1100, " | |
106 | "1 is spec compliant. (default=1)"); | |
107 | ||
108 | static int markers_enabled; | |
109 | module_param(markers_enabled, int, 0644); | |
110 | MODULE_PARM_DESC(markers_enabled, "Enable MPA MARKERS (default(0)=disabled)"); | |
111 | ||
112 | static int crc_enabled = 1; | |
113 | module_param(crc_enabled, int, 0644); | |
114 | MODULE_PARM_DESC(crc_enabled, "Enable MPA CRC (default(1)=enabled)"); | |
115 | ||
116 | static int rcv_win = 256 * 1024; | |
117 | module_param(rcv_win, int, 0644); | |
118 | MODULE_PARM_DESC(rcv_win, "TCP receive window in bytes (default=256KB)"); | |
119 | ||
98ae68b7 | 120 | static int snd_win = 128 * 1024; |
cfdda9d7 | 121 | module_param(snd_win, int, 0644); |
98ae68b7 | 122 | MODULE_PARM_DESC(snd_win, "TCP send window in bytes (default=128KB)"); |
cfdda9d7 | 123 | |
cfdda9d7 | 124 | static struct workqueue_struct *workq; |
cfdda9d7 SW |
125 | |
126 | static struct sk_buff_head rxq; | |
cfdda9d7 SW |
127 | |
128 | static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp); | |
129 | static void ep_timeout(unsigned long arg); | |
130 | static void connect_reply_upcall(struct c4iw_ep *ep, int status); | |
131 | ||
be4c9bad RD |
132 | static LIST_HEAD(timeout_list); |
133 | static spinlock_t timeout_lock; | |
134 | ||
cfdda9d7 SW |
135 | static void start_ep_timer(struct c4iw_ep *ep) |
136 | { | |
137 | PDBG("%s ep %p\n", __func__, ep); | |
138 | if (timer_pending(&ep->timer)) { | |
139 | PDBG("%s stopped / restarted timer ep %p\n", __func__, ep); | |
140 | del_timer_sync(&ep->timer); | |
141 | } else | |
142 | c4iw_get_ep(&ep->com); | |
143 | ep->timer.expires = jiffies + ep_timeout_secs * HZ; | |
144 | ep->timer.data = (unsigned long)ep; | |
145 | ep->timer.function = ep_timeout; | |
146 | add_timer(&ep->timer); | |
147 | } | |
148 | ||
149 | static void stop_ep_timer(struct c4iw_ep *ep) | |
150 | { | |
151 | PDBG("%s ep %p\n", __func__, ep); | |
152 | if (!timer_pending(&ep->timer)) { | |
153 | printk(KERN_ERR "%s timer stopped when its not running! " | |
154 | "ep %p state %u\n", __func__, ep, ep->com.state); | |
155 | WARN_ON(1); | |
156 | return; | |
157 | } | |
158 | del_timer_sync(&ep->timer); | |
159 | c4iw_put_ep(&ep->com); | |
160 | } | |
161 | ||
162 | static int c4iw_l2t_send(struct c4iw_rdev *rdev, struct sk_buff *skb, | |
163 | struct l2t_entry *l2e) | |
164 | { | |
165 | int error = 0; | |
166 | ||
167 | if (c4iw_fatal_error(rdev)) { | |
168 | kfree_skb(skb); | |
169 | PDBG("%s - device in error state - dropping\n", __func__); | |
170 | return -EIO; | |
171 | } | |
172 | error = cxgb4_l2t_send(rdev->lldi.ports[0], skb, l2e); | |
173 | if (error < 0) | |
174 | kfree_skb(skb); | |
74594861 | 175 | return error < 0 ? error : 0; |
cfdda9d7 SW |
176 | } |
177 | ||
178 | int c4iw_ofld_send(struct c4iw_rdev *rdev, struct sk_buff *skb) | |
179 | { | |
180 | int error = 0; | |
181 | ||
182 | if (c4iw_fatal_error(rdev)) { | |
183 | kfree_skb(skb); | |
184 | PDBG("%s - device in error state - dropping\n", __func__); | |
185 | return -EIO; | |
186 | } | |
187 | error = cxgb4_ofld_send(rdev->lldi.ports[0], skb); | |
188 | if (error < 0) | |
189 | kfree_skb(skb); | |
74594861 | 190 | return error < 0 ? error : 0; |
cfdda9d7 SW |
191 | } |
192 | ||
193 | static void release_tid(struct c4iw_rdev *rdev, u32 hwtid, struct sk_buff *skb) | |
194 | { | |
195 | struct cpl_tid_release *req; | |
196 | ||
197 | skb = get_skb(skb, sizeof *req, GFP_KERNEL); | |
198 | if (!skb) | |
199 | return; | |
200 | req = (struct cpl_tid_release *) skb_put(skb, sizeof(*req)); | |
201 | INIT_TP_WR(req, hwtid); | |
202 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_TID_RELEASE, hwtid)); | |
203 | set_wr_txq(skb, CPL_PRIORITY_SETUP, 0); | |
204 | c4iw_ofld_send(rdev, skb); | |
205 | return; | |
206 | } | |
207 | ||
208 | static void set_emss(struct c4iw_ep *ep, u16 opt) | |
209 | { | |
210 | ep->emss = ep->com.dev->rdev.lldi.mtus[GET_TCPOPT_MSS(opt)] - 40; | |
211 | ep->mss = ep->emss; | |
212 | if (GET_TCPOPT_TSTAMP(opt)) | |
213 | ep->emss -= 12; | |
214 | if (ep->emss < 128) | |
215 | ep->emss = 128; | |
216 | PDBG("%s mss_idx %u mss %u emss=%u\n", __func__, GET_TCPOPT_MSS(opt), | |
217 | ep->mss, ep->emss); | |
218 | } | |
219 | ||
220 | static enum c4iw_ep_state state_read(struct c4iw_ep_common *epc) | |
221 | { | |
cfdda9d7 SW |
222 | enum c4iw_ep_state state; |
223 | ||
2f5b48c3 | 224 | mutex_lock(&epc->mutex); |
cfdda9d7 | 225 | state = epc->state; |
2f5b48c3 | 226 | mutex_unlock(&epc->mutex); |
cfdda9d7 SW |
227 | return state; |
228 | } | |
229 | ||
230 | static void __state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new) | |
231 | { | |
232 | epc->state = new; | |
233 | } | |
234 | ||
235 | static void state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new) | |
236 | { | |
2f5b48c3 | 237 | mutex_lock(&epc->mutex); |
cfdda9d7 SW |
238 | PDBG("%s - %s -> %s\n", __func__, states[epc->state], states[new]); |
239 | __state_set(epc, new); | |
2f5b48c3 | 240 | mutex_unlock(&epc->mutex); |
cfdda9d7 SW |
241 | return; |
242 | } | |
243 | ||
244 | static void *alloc_ep(int size, gfp_t gfp) | |
245 | { | |
246 | struct c4iw_ep_common *epc; | |
247 | ||
248 | epc = kzalloc(size, gfp); | |
249 | if (epc) { | |
250 | kref_init(&epc->kref); | |
2f5b48c3 | 251 | mutex_init(&epc->mutex); |
aadc4df3 | 252 | c4iw_init_wr_wait(&epc->wr_wait); |
cfdda9d7 SW |
253 | } |
254 | PDBG("%s alloc ep %p\n", __func__, epc); | |
255 | return epc; | |
256 | } | |
257 | ||
258 | void _c4iw_free_ep(struct kref *kref) | |
259 | { | |
260 | struct c4iw_ep *ep; | |
261 | ||
262 | ep = container_of(kref, struct c4iw_ep, com.kref); | |
263 | PDBG("%s ep %p state %s\n", __func__, ep, states[state_read(&ep->com)]); | |
264 | if (test_bit(RELEASE_RESOURCES, &ep->com.flags)) { | |
265 | cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid); | |
266 | dst_release(ep->dst); | |
267 | cxgb4_l2t_release(ep->l2t); | |
268 | } | |
269 | kfree(ep); | |
270 | } | |
271 | ||
272 | static void release_ep_resources(struct c4iw_ep *ep) | |
273 | { | |
274 | set_bit(RELEASE_RESOURCES, &ep->com.flags); | |
275 | c4iw_put_ep(&ep->com); | |
276 | } | |
277 | ||
cfdda9d7 SW |
278 | static int status2errno(int status) |
279 | { | |
280 | switch (status) { | |
281 | case CPL_ERR_NONE: | |
282 | return 0; | |
283 | case CPL_ERR_CONN_RESET: | |
284 | return -ECONNRESET; | |
285 | case CPL_ERR_ARP_MISS: | |
286 | return -EHOSTUNREACH; | |
287 | case CPL_ERR_CONN_TIMEDOUT: | |
288 | return -ETIMEDOUT; | |
289 | case CPL_ERR_TCAM_FULL: | |
290 | return -ENOMEM; | |
291 | case CPL_ERR_CONN_EXIST: | |
292 | return -EADDRINUSE; | |
293 | default: | |
294 | return -EIO; | |
295 | } | |
296 | } | |
297 | ||
298 | /* | |
299 | * Try and reuse skbs already allocated... | |
300 | */ | |
301 | static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp) | |
302 | { | |
303 | if (skb && !skb_is_nonlinear(skb) && !skb_cloned(skb)) { | |
304 | skb_trim(skb, 0); | |
305 | skb_get(skb); | |
306 | skb_reset_transport_header(skb); | |
307 | } else { | |
308 | skb = alloc_skb(len, gfp); | |
309 | } | |
310 | return skb; | |
311 | } | |
312 | ||
313 | static struct rtable *find_route(struct c4iw_dev *dev, __be32 local_ip, | |
314 | __be32 peer_ip, __be16 local_port, | |
315 | __be16 peer_port, u8 tos) | |
316 | { | |
317 | struct rtable *rt; | |
318 | struct flowi fl = { | |
319 | .oif = 0, | |
320 | .nl_u = { | |
321 | .ip4_u = { | |
322 | .daddr = peer_ip, | |
323 | .saddr = local_ip, | |
324 | .tos = tos} | |
325 | }, | |
326 | .proto = IPPROTO_TCP, | |
327 | .uli_u = { | |
328 | .ports = { | |
329 | .sport = local_port, | |
330 | .dport = peer_port} | |
331 | } | |
332 | }; | |
333 | ||
334 | if (ip_route_output_flow(&init_net, &rt, &fl, NULL, 0)) | |
335 | return NULL; | |
336 | return rt; | |
337 | } | |
338 | ||
339 | static void arp_failure_discard(void *handle, struct sk_buff *skb) | |
340 | { | |
341 | PDBG("%s c4iw_dev %p\n", __func__, handle); | |
342 | kfree_skb(skb); | |
343 | } | |
344 | ||
345 | /* | |
346 | * Handle an ARP failure for an active open. | |
347 | */ | |
348 | static void act_open_req_arp_failure(void *handle, struct sk_buff *skb) | |
349 | { | |
350 | printk(KERN_ERR MOD "ARP failure duing connect\n"); | |
351 | kfree_skb(skb); | |
352 | } | |
353 | ||
354 | /* | |
355 | * Handle an ARP failure for a CPL_ABORT_REQ. Change it into a no RST variant | |
356 | * and send it along. | |
357 | */ | |
358 | static void abort_arp_failure(void *handle, struct sk_buff *skb) | |
359 | { | |
360 | struct c4iw_rdev *rdev = handle; | |
361 | struct cpl_abort_req *req = cplhdr(skb); | |
362 | ||
363 | PDBG("%s rdev %p\n", __func__, rdev); | |
364 | req->cmd = CPL_ABORT_NO_RST; | |
365 | c4iw_ofld_send(rdev, skb); | |
366 | } | |
367 | ||
368 | static void send_flowc(struct c4iw_ep *ep, struct sk_buff *skb) | |
369 | { | |
370 | unsigned int flowclen = 80; | |
371 | struct fw_flowc_wr *flowc; | |
372 | int i; | |
373 | ||
374 | skb = get_skb(skb, flowclen, GFP_KERNEL); | |
375 | flowc = (struct fw_flowc_wr *)__skb_put(skb, flowclen); | |
376 | ||
377 | flowc->op_to_nparams = cpu_to_be32(FW_WR_OP(FW_FLOWC_WR) | | |
378 | FW_FLOWC_WR_NPARAMS(8)); | |
379 | flowc->flowid_len16 = cpu_to_be32(FW_WR_LEN16(DIV_ROUND_UP(flowclen, | |
380 | 16)) | FW_WR_FLOWID(ep->hwtid)); | |
381 | ||
382 | flowc->mnemval[0].mnemonic = FW_FLOWC_MNEM_PFNVFN; | |
94788657 | 383 | flowc->mnemval[0].val = cpu_to_be32(PCI_FUNC(ep->com.dev->rdev.lldi.pdev->devfn) << 8); |
cfdda9d7 SW |
384 | flowc->mnemval[1].mnemonic = FW_FLOWC_MNEM_CH; |
385 | flowc->mnemval[1].val = cpu_to_be32(ep->tx_chan); | |
386 | flowc->mnemval[2].mnemonic = FW_FLOWC_MNEM_PORT; | |
387 | flowc->mnemval[2].val = cpu_to_be32(ep->tx_chan); | |
388 | flowc->mnemval[3].mnemonic = FW_FLOWC_MNEM_IQID; | |
389 | flowc->mnemval[3].val = cpu_to_be32(ep->rss_qid); | |
390 | flowc->mnemval[4].mnemonic = FW_FLOWC_MNEM_SNDNXT; | |
391 | flowc->mnemval[4].val = cpu_to_be32(ep->snd_seq); | |
392 | flowc->mnemval[5].mnemonic = FW_FLOWC_MNEM_RCVNXT; | |
393 | flowc->mnemval[5].val = cpu_to_be32(ep->rcv_seq); | |
394 | flowc->mnemval[6].mnemonic = FW_FLOWC_MNEM_SNDBUF; | |
395 | flowc->mnemval[6].val = cpu_to_be32(snd_win); | |
396 | flowc->mnemval[7].mnemonic = FW_FLOWC_MNEM_MSS; | |
397 | flowc->mnemval[7].val = cpu_to_be32(ep->emss); | |
398 | /* Pad WR to 16 byte boundary */ | |
399 | flowc->mnemval[8].mnemonic = 0; | |
400 | flowc->mnemval[8].val = 0; | |
401 | for (i = 0; i < 9; i++) { | |
402 | flowc->mnemval[i].r4[0] = 0; | |
403 | flowc->mnemval[i].r4[1] = 0; | |
404 | flowc->mnemval[i].r4[2] = 0; | |
405 | } | |
406 | ||
407 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
408 | c4iw_ofld_send(&ep->com.dev->rdev, skb); | |
409 | } | |
410 | ||
411 | static int send_halfclose(struct c4iw_ep *ep, gfp_t gfp) | |
412 | { | |
413 | struct cpl_close_con_req *req; | |
414 | struct sk_buff *skb; | |
415 | int wrlen = roundup(sizeof *req, 16); | |
416 | ||
417 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
418 | skb = get_skb(NULL, wrlen, gfp); | |
419 | if (!skb) { | |
420 | printk(KERN_ERR MOD "%s - failed to alloc skb\n", __func__); | |
421 | return -ENOMEM; | |
422 | } | |
423 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
424 | t4_set_arp_err_handler(skb, NULL, arp_failure_discard); | |
425 | req = (struct cpl_close_con_req *) skb_put(skb, wrlen); | |
426 | memset(req, 0, wrlen); | |
427 | INIT_TP_WR(req, ep->hwtid); | |
428 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, | |
429 | ep->hwtid)); | |
430 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); | |
431 | } | |
432 | ||
433 | static int send_abort(struct c4iw_ep *ep, struct sk_buff *skb, gfp_t gfp) | |
434 | { | |
435 | struct cpl_abort_req *req; | |
436 | int wrlen = roundup(sizeof *req, 16); | |
437 | ||
438 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
439 | skb = get_skb(skb, wrlen, gfp); | |
440 | if (!skb) { | |
441 | printk(KERN_ERR MOD "%s - failed to alloc skb.\n", | |
442 | __func__); | |
443 | return -ENOMEM; | |
444 | } | |
445 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
446 | t4_set_arp_err_handler(skb, &ep->com.dev->rdev, abort_arp_failure); | |
447 | req = (struct cpl_abort_req *) skb_put(skb, wrlen); | |
448 | memset(req, 0, wrlen); | |
449 | INIT_TP_WR(req, ep->hwtid); | |
450 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_REQ, ep->hwtid)); | |
451 | req->cmd = CPL_ABORT_SEND_RST; | |
452 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); | |
453 | } | |
454 | ||
455 | static int send_connect(struct c4iw_ep *ep) | |
456 | { | |
457 | struct cpl_act_open_req *req; | |
458 | struct sk_buff *skb; | |
459 | u64 opt0; | |
460 | u32 opt2; | |
461 | unsigned int mtu_idx; | |
462 | int wscale; | |
463 | int wrlen = roundup(sizeof *req, 16); | |
464 | ||
465 | PDBG("%s ep %p atid %u\n", __func__, ep, ep->atid); | |
466 | ||
467 | skb = get_skb(NULL, wrlen, GFP_KERNEL); | |
468 | if (!skb) { | |
469 | printk(KERN_ERR MOD "%s - failed to alloc skb.\n", | |
470 | __func__); | |
471 | return -ENOMEM; | |
472 | } | |
d4f1a5c6 | 473 | set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx); |
cfdda9d7 SW |
474 | |
475 | cxgb4_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx); | |
476 | wscale = compute_wscale(rcv_win); | |
477 | opt0 = KEEP_ALIVE(1) | | |
ba6d3925 | 478 | DELACK(1) | |
cfdda9d7 SW |
479 | WND_SCALE(wscale) | |
480 | MSS_IDX(mtu_idx) | | |
481 | L2T_IDX(ep->l2t->idx) | | |
482 | TX_CHAN(ep->tx_chan) | | |
483 | SMAC_SEL(ep->smac_idx) | | |
484 | DSCP(ep->tos) | | |
485 | RCV_BUFSIZ(rcv_win>>10); | |
486 | opt2 = RX_CHANNEL(0) | | |
487 | RSS_QUEUE_VALID | RSS_QUEUE(ep->rss_qid); | |
488 | if (enable_tcp_timestamps) | |
489 | opt2 |= TSTAMPS_EN(1); | |
490 | if (enable_tcp_sack) | |
491 | opt2 |= SACK_EN(1); | |
492 | if (wscale && enable_tcp_window_scaling) | |
493 | opt2 |= WND_SCALE_EN(1); | |
494 | t4_set_arp_err_handler(skb, NULL, act_open_req_arp_failure); | |
495 | ||
496 | req = (struct cpl_act_open_req *) skb_put(skb, wrlen); | |
497 | INIT_TP_WR(req, 0); | |
498 | OPCODE_TID(req) = cpu_to_be32( | |
499 | MK_OPCODE_TID(CPL_ACT_OPEN_REQ, ((ep->rss_qid<<14)|ep->atid))); | |
500 | req->local_port = ep->com.local_addr.sin_port; | |
501 | req->peer_port = ep->com.remote_addr.sin_port; | |
502 | req->local_ip = ep->com.local_addr.sin_addr.s_addr; | |
503 | req->peer_ip = ep->com.remote_addr.sin_addr.s_addr; | |
504 | req->opt0 = cpu_to_be64(opt0); | |
505 | req->params = 0; | |
506 | req->opt2 = cpu_to_be32(opt2); | |
507 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); | |
508 | } | |
509 | ||
510 | static void send_mpa_req(struct c4iw_ep *ep, struct sk_buff *skb) | |
511 | { | |
512 | int mpalen, wrlen; | |
513 | struct fw_ofld_tx_data_wr *req; | |
514 | struct mpa_message *mpa; | |
515 | ||
516 | PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); | |
517 | ||
518 | BUG_ON(skb_cloned(skb)); | |
519 | ||
520 | mpalen = sizeof(*mpa) + ep->plen; | |
521 | wrlen = roundup(mpalen + sizeof *req, 16); | |
522 | skb = get_skb(skb, wrlen, GFP_KERNEL); | |
523 | if (!skb) { | |
524 | connect_reply_upcall(ep, -ENOMEM); | |
525 | return; | |
526 | } | |
527 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
528 | ||
529 | req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen); | |
530 | memset(req, 0, wrlen); | |
531 | req->op_to_immdlen = cpu_to_be32( | |
532 | FW_WR_OP(FW_OFLD_TX_DATA_WR) | | |
533 | FW_WR_COMPL(1) | | |
534 | FW_WR_IMMDLEN(mpalen)); | |
535 | req->flowid_len16 = cpu_to_be32( | |
536 | FW_WR_FLOWID(ep->hwtid) | | |
537 | FW_WR_LEN16(wrlen >> 4)); | |
538 | req->plen = cpu_to_be32(mpalen); | |
539 | req->tunnel_to_proxy = cpu_to_be32( | |
540 | FW_OFLD_TX_DATA_WR_FLUSH(1) | | |
541 | FW_OFLD_TX_DATA_WR_SHOVE(1)); | |
542 | ||
543 | mpa = (struct mpa_message *)(req + 1); | |
544 | memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)); | |
545 | mpa->flags = (crc_enabled ? MPA_CRC : 0) | | |
546 | (markers_enabled ? MPA_MARKERS : 0); | |
547 | mpa->private_data_size = htons(ep->plen); | |
548 | mpa->revision = mpa_rev; | |
549 | ||
550 | if (ep->plen) | |
551 | memcpy(mpa->private_data, ep->mpa_pkt + sizeof(*mpa), ep->plen); | |
552 | ||
553 | /* | |
554 | * Reference the mpa skb. This ensures the data area | |
555 | * will remain in memory until the hw acks the tx. | |
556 | * Function fw4_ack() will deref it. | |
557 | */ | |
558 | skb_get(skb); | |
559 | t4_set_arp_err_handler(skb, NULL, arp_failure_discard); | |
560 | BUG_ON(ep->mpa_skb); | |
561 | ep->mpa_skb = skb; | |
562 | c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); | |
563 | start_ep_timer(ep); | |
564 | state_set(&ep->com, MPA_REQ_SENT); | |
565 | ep->mpa_attr.initiator = 1; | |
566 | return; | |
567 | } | |
568 | ||
569 | static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen) | |
570 | { | |
571 | int mpalen, wrlen; | |
572 | struct fw_ofld_tx_data_wr *req; | |
573 | struct mpa_message *mpa; | |
574 | struct sk_buff *skb; | |
575 | ||
576 | PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); | |
577 | ||
578 | mpalen = sizeof(*mpa) + plen; | |
579 | wrlen = roundup(mpalen + sizeof *req, 16); | |
580 | ||
581 | skb = get_skb(NULL, wrlen, GFP_KERNEL); | |
582 | if (!skb) { | |
583 | printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__); | |
584 | return -ENOMEM; | |
585 | } | |
586 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
587 | ||
588 | req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen); | |
589 | memset(req, 0, wrlen); | |
590 | req->op_to_immdlen = cpu_to_be32( | |
591 | FW_WR_OP(FW_OFLD_TX_DATA_WR) | | |
592 | FW_WR_COMPL(1) | | |
593 | FW_WR_IMMDLEN(mpalen)); | |
594 | req->flowid_len16 = cpu_to_be32( | |
595 | FW_WR_FLOWID(ep->hwtid) | | |
596 | FW_WR_LEN16(wrlen >> 4)); | |
597 | req->plen = cpu_to_be32(mpalen); | |
598 | req->tunnel_to_proxy = cpu_to_be32( | |
599 | FW_OFLD_TX_DATA_WR_FLUSH(1) | | |
600 | FW_OFLD_TX_DATA_WR_SHOVE(1)); | |
601 | ||
602 | mpa = (struct mpa_message *)(req + 1); | |
603 | memset(mpa, 0, sizeof(*mpa)); | |
604 | memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); | |
605 | mpa->flags = MPA_REJECT; | |
606 | mpa->revision = mpa_rev; | |
607 | mpa->private_data_size = htons(plen); | |
608 | if (plen) | |
609 | memcpy(mpa->private_data, pdata, plen); | |
610 | ||
611 | /* | |
612 | * Reference the mpa skb again. This ensures the data area | |
613 | * will remain in memory until the hw acks the tx. | |
614 | * Function fw4_ack() will deref it. | |
615 | */ | |
616 | skb_get(skb); | |
617 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
618 | t4_set_arp_err_handler(skb, NULL, arp_failure_discard); | |
619 | BUG_ON(ep->mpa_skb); | |
620 | ep->mpa_skb = skb; | |
621 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); | |
622 | } | |
623 | ||
624 | static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen) | |
625 | { | |
626 | int mpalen, wrlen; | |
627 | struct fw_ofld_tx_data_wr *req; | |
628 | struct mpa_message *mpa; | |
629 | struct sk_buff *skb; | |
630 | ||
631 | PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); | |
632 | ||
633 | mpalen = sizeof(*mpa) + plen; | |
634 | wrlen = roundup(mpalen + sizeof *req, 16); | |
635 | ||
636 | skb = get_skb(NULL, wrlen, GFP_KERNEL); | |
637 | if (!skb) { | |
638 | printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__); | |
639 | return -ENOMEM; | |
640 | } | |
641 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
642 | ||
643 | req = (struct fw_ofld_tx_data_wr *) skb_put(skb, wrlen); | |
644 | memset(req, 0, wrlen); | |
645 | req->op_to_immdlen = cpu_to_be32( | |
646 | FW_WR_OP(FW_OFLD_TX_DATA_WR) | | |
647 | FW_WR_COMPL(1) | | |
648 | FW_WR_IMMDLEN(mpalen)); | |
649 | req->flowid_len16 = cpu_to_be32( | |
650 | FW_WR_FLOWID(ep->hwtid) | | |
651 | FW_WR_LEN16(wrlen >> 4)); | |
652 | req->plen = cpu_to_be32(mpalen); | |
653 | req->tunnel_to_proxy = cpu_to_be32( | |
654 | FW_OFLD_TX_DATA_WR_FLUSH(1) | | |
655 | FW_OFLD_TX_DATA_WR_SHOVE(1)); | |
656 | ||
657 | mpa = (struct mpa_message *)(req + 1); | |
658 | memset(mpa, 0, sizeof(*mpa)); | |
659 | memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); | |
660 | mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) | | |
661 | (markers_enabled ? MPA_MARKERS : 0); | |
662 | mpa->revision = mpa_rev; | |
663 | mpa->private_data_size = htons(plen); | |
664 | if (plen) | |
665 | memcpy(mpa->private_data, pdata, plen); | |
666 | ||
667 | /* | |
668 | * Reference the mpa skb. This ensures the data area | |
669 | * will remain in memory until the hw acks the tx. | |
670 | * Function fw4_ack() will deref it. | |
671 | */ | |
672 | skb_get(skb); | |
673 | t4_set_arp_err_handler(skb, NULL, arp_failure_discard); | |
674 | ep->mpa_skb = skb; | |
675 | state_set(&ep->com, MPA_REP_SENT); | |
676 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); | |
677 | } | |
678 | ||
679 | static int act_establish(struct c4iw_dev *dev, struct sk_buff *skb) | |
680 | { | |
681 | struct c4iw_ep *ep; | |
682 | struct cpl_act_establish *req = cplhdr(skb); | |
683 | unsigned int tid = GET_TID(req); | |
684 | unsigned int atid = GET_TID_TID(ntohl(req->tos_atid)); | |
685 | struct tid_info *t = dev->rdev.lldi.tids; | |
686 | ||
687 | ep = lookup_atid(t, atid); | |
688 | ||
689 | PDBG("%s ep %p tid %u snd_isn %u rcv_isn %u\n", __func__, ep, tid, | |
690 | be32_to_cpu(req->snd_isn), be32_to_cpu(req->rcv_isn)); | |
691 | ||
692 | dst_confirm(ep->dst); | |
693 | ||
694 | /* setup the hwtid for this connection */ | |
695 | ep->hwtid = tid; | |
696 | cxgb4_insert_tid(t, ep, tid); | |
697 | ||
698 | ep->snd_seq = be32_to_cpu(req->snd_isn); | |
699 | ep->rcv_seq = be32_to_cpu(req->rcv_isn); | |
700 | ||
701 | set_emss(ep, ntohs(req->tcp_opt)); | |
702 | ||
703 | /* dealloc the atid */ | |
704 | cxgb4_free_atid(t, atid); | |
705 | ||
706 | /* start MPA negotiation */ | |
707 | send_flowc(ep, NULL); | |
708 | send_mpa_req(ep, skb); | |
709 | ||
710 | return 0; | |
711 | } | |
712 | ||
713 | static void close_complete_upcall(struct c4iw_ep *ep) | |
714 | { | |
715 | struct iw_cm_event event; | |
716 | ||
717 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
718 | memset(&event, 0, sizeof(event)); | |
719 | event.event = IW_CM_EVENT_CLOSE; | |
720 | if (ep->com.cm_id) { | |
721 | PDBG("close complete delivered ep %p cm_id %p tid %u\n", | |
722 | ep, ep->com.cm_id, ep->hwtid); | |
723 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
724 | ep->com.cm_id->rem_ref(ep->com.cm_id); | |
725 | ep->com.cm_id = NULL; | |
726 | ep->com.qp = NULL; | |
727 | } | |
728 | } | |
729 | ||
730 | static int abort_connection(struct c4iw_ep *ep, struct sk_buff *skb, gfp_t gfp) | |
731 | { | |
732 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
733 | close_complete_upcall(ep); | |
734 | state_set(&ep->com, ABORTING); | |
735 | return send_abort(ep, skb, gfp); | |
736 | } | |
737 | ||
738 | static void peer_close_upcall(struct c4iw_ep *ep) | |
739 | { | |
740 | struct iw_cm_event event; | |
741 | ||
742 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
743 | memset(&event, 0, sizeof(event)); | |
744 | event.event = IW_CM_EVENT_DISCONNECT; | |
745 | if (ep->com.cm_id) { | |
746 | PDBG("peer close delivered ep %p cm_id %p tid %u\n", | |
747 | ep, ep->com.cm_id, ep->hwtid); | |
748 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
749 | } | |
750 | } | |
751 | ||
752 | static void peer_abort_upcall(struct c4iw_ep *ep) | |
753 | { | |
754 | struct iw_cm_event event; | |
755 | ||
756 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
757 | memset(&event, 0, sizeof(event)); | |
758 | event.event = IW_CM_EVENT_CLOSE; | |
759 | event.status = -ECONNRESET; | |
760 | if (ep->com.cm_id) { | |
761 | PDBG("abort delivered ep %p cm_id %p tid %u\n", ep, | |
762 | ep->com.cm_id, ep->hwtid); | |
763 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
764 | ep->com.cm_id->rem_ref(ep->com.cm_id); | |
765 | ep->com.cm_id = NULL; | |
766 | ep->com.qp = NULL; | |
767 | } | |
768 | } | |
769 | ||
770 | static void connect_reply_upcall(struct c4iw_ep *ep, int status) | |
771 | { | |
772 | struct iw_cm_event event; | |
773 | ||
774 | PDBG("%s ep %p tid %u status %d\n", __func__, ep, ep->hwtid, status); | |
775 | memset(&event, 0, sizeof(event)); | |
776 | event.event = IW_CM_EVENT_CONNECT_REPLY; | |
777 | event.status = status; | |
778 | event.local_addr = ep->com.local_addr; | |
779 | event.remote_addr = ep->com.remote_addr; | |
780 | ||
781 | if ((status == 0) || (status == -ECONNREFUSED)) { | |
782 | event.private_data_len = ep->plen; | |
783 | event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); | |
784 | } | |
85963e4c RD |
785 | |
786 | PDBG("%s ep %p tid %u status %d\n", __func__, ep, | |
787 | ep->hwtid, status); | |
788 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
789 | ||
cfdda9d7 SW |
790 | if (status < 0) { |
791 | ep->com.cm_id->rem_ref(ep->com.cm_id); | |
792 | ep->com.cm_id = NULL; | |
793 | ep->com.qp = NULL; | |
794 | } | |
795 | } | |
796 | ||
797 | static void connect_request_upcall(struct c4iw_ep *ep) | |
798 | { | |
799 | struct iw_cm_event event; | |
800 | ||
801 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
802 | memset(&event, 0, sizeof(event)); | |
803 | event.event = IW_CM_EVENT_CONNECT_REQUEST; | |
804 | event.local_addr = ep->com.local_addr; | |
805 | event.remote_addr = ep->com.remote_addr; | |
806 | event.private_data_len = ep->plen; | |
807 | event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); | |
808 | event.provider_data = ep; | |
809 | if (state_read(&ep->parent_ep->com) != DEAD) { | |
810 | c4iw_get_ep(&ep->com); | |
811 | ep->parent_ep->com.cm_id->event_handler( | |
812 | ep->parent_ep->com.cm_id, | |
813 | &event); | |
814 | } | |
815 | c4iw_put_ep(&ep->parent_ep->com); | |
816 | ep->parent_ep = NULL; | |
817 | } | |
818 | ||
819 | static void established_upcall(struct c4iw_ep *ep) | |
820 | { | |
821 | struct iw_cm_event event; | |
822 | ||
823 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
824 | memset(&event, 0, sizeof(event)); | |
825 | event.event = IW_CM_EVENT_ESTABLISHED; | |
826 | if (ep->com.cm_id) { | |
827 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
828 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
829 | } | |
830 | } | |
831 | ||
832 | static int update_rx_credits(struct c4iw_ep *ep, u32 credits) | |
833 | { | |
834 | struct cpl_rx_data_ack *req; | |
835 | struct sk_buff *skb; | |
836 | int wrlen = roundup(sizeof *req, 16); | |
837 | ||
838 | PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits); | |
839 | skb = get_skb(NULL, wrlen, GFP_KERNEL); | |
840 | if (!skb) { | |
841 | printk(KERN_ERR MOD "update_rx_credits - cannot alloc skb!\n"); | |
842 | return 0; | |
843 | } | |
844 | ||
845 | req = (struct cpl_rx_data_ack *) skb_put(skb, wrlen); | |
846 | memset(req, 0, wrlen); | |
847 | INIT_TP_WR(req, ep->hwtid); | |
848 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_RX_DATA_ACK, | |
849 | ep->hwtid)); | |
ba6d3925 SW |
850 | req->credit_dack = cpu_to_be32(credits | RX_FORCE_ACK(1) | |
851 | F_RX_DACK_CHANGE | | |
852 | V_RX_DACK_MODE(dack_mode)); | |
d4f1a5c6 | 853 | set_wr_txq(skb, CPL_PRIORITY_ACK, ep->ctrlq_idx); |
cfdda9d7 SW |
854 | c4iw_ofld_send(&ep->com.dev->rdev, skb); |
855 | return credits; | |
856 | } | |
857 | ||
858 | static void process_mpa_reply(struct c4iw_ep *ep, struct sk_buff *skb) | |
859 | { | |
860 | struct mpa_message *mpa; | |
861 | u16 plen; | |
862 | struct c4iw_qp_attributes attrs; | |
863 | enum c4iw_qp_attr_mask mask; | |
864 | int err; | |
865 | ||
866 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
867 | ||
868 | /* | |
869 | * Stop mpa timer. If it expired, then the state has | |
870 | * changed and we bail since ep_timeout already aborted | |
871 | * the connection. | |
872 | */ | |
873 | stop_ep_timer(ep); | |
874 | if (state_read(&ep->com) != MPA_REQ_SENT) | |
875 | return; | |
876 | ||
877 | /* | |
878 | * If we get more than the supported amount of private data | |
879 | * then we must fail this connection. | |
880 | */ | |
881 | if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) { | |
882 | err = -EINVAL; | |
883 | goto err; | |
884 | } | |
885 | ||
886 | /* | |
887 | * copy the new data into our accumulation buffer. | |
888 | */ | |
889 | skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]), | |
890 | skb->len); | |
891 | ep->mpa_pkt_len += skb->len; | |
892 | ||
893 | /* | |
894 | * if we don't even have the mpa message, then bail. | |
895 | */ | |
896 | if (ep->mpa_pkt_len < sizeof(*mpa)) | |
897 | return; | |
898 | mpa = (struct mpa_message *) ep->mpa_pkt; | |
899 | ||
900 | /* Validate MPA header. */ | |
901 | if (mpa->revision != mpa_rev) { | |
902 | err = -EPROTO; | |
903 | goto err; | |
904 | } | |
905 | if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) { | |
906 | err = -EPROTO; | |
907 | goto err; | |
908 | } | |
909 | ||
910 | plen = ntohs(mpa->private_data_size); | |
911 | ||
912 | /* | |
913 | * Fail if there's too much private data. | |
914 | */ | |
915 | if (plen > MPA_MAX_PRIVATE_DATA) { | |
916 | err = -EPROTO; | |
917 | goto err; | |
918 | } | |
919 | ||
920 | /* | |
921 | * If plen does not account for pkt size | |
922 | */ | |
923 | if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { | |
924 | err = -EPROTO; | |
925 | goto err; | |
926 | } | |
927 | ||
928 | ep->plen = (u8) plen; | |
929 | ||
930 | /* | |
931 | * If we don't have all the pdata yet, then bail. | |
932 | * We'll continue process when more data arrives. | |
933 | */ | |
934 | if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) | |
935 | return; | |
936 | ||
937 | if (mpa->flags & MPA_REJECT) { | |
938 | err = -ECONNREFUSED; | |
939 | goto err; | |
940 | } | |
941 | ||
942 | /* | |
943 | * If we get here we have accumulated the entire mpa | |
944 | * start reply message including private data. And | |
945 | * the MPA header is valid. | |
946 | */ | |
947 | state_set(&ep->com, FPDU_MODE); | |
948 | ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; | |
949 | ep->mpa_attr.recv_marker_enabled = markers_enabled; | |
950 | ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; | |
951 | ep->mpa_attr.version = mpa_rev; | |
952 | ep->mpa_attr.p2p_type = peer2peer ? p2p_type : | |
953 | FW_RI_INIT_P2PTYPE_DISABLED; | |
954 | PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " | |
955 | "xmit_marker_enabled=%d, version=%d\n", __func__, | |
956 | ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, | |
957 | ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version); | |
958 | ||
959 | attrs.mpa_attr = ep->mpa_attr; | |
960 | attrs.max_ird = ep->ird; | |
961 | attrs.max_ord = ep->ord; | |
962 | attrs.llp_stream_handle = ep; | |
963 | attrs.next_state = C4IW_QP_STATE_RTS; | |
964 | ||
965 | mask = C4IW_QP_ATTR_NEXT_STATE | | |
966 | C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR | | |
967 | C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD; | |
968 | ||
969 | /* bind QP and TID with INIT_WR */ | |
970 | err = c4iw_modify_qp(ep->com.qp->rhp, | |
971 | ep->com.qp, mask, &attrs, 1); | |
972 | if (err) | |
973 | goto err; | |
974 | goto out; | |
975 | err: | |
b21ef16a SW |
976 | state_set(&ep->com, ABORTING); |
977 | send_abort(ep, skb, GFP_KERNEL); | |
cfdda9d7 SW |
978 | out: |
979 | connect_reply_upcall(ep, err); | |
980 | return; | |
981 | } | |
982 | ||
983 | static void process_mpa_request(struct c4iw_ep *ep, struct sk_buff *skb) | |
984 | { | |
985 | struct mpa_message *mpa; | |
986 | u16 plen; | |
987 | ||
988 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
989 | ||
990 | if (state_read(&ep->com) != MPA_REQ_WAIT) | |
991 | return; | |
992 | ||
993 | /* | |
994 | * If we get more than the supported amount of private data | |
995 | * then we must fail this connection. | |
996 | */ | |
997 | if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) { | |
998 | stop_ep_timer(ep); | |
999 | abort_connection(ep, skb, GFP_KERNEL); | |
1000 | return; | |
1001 | } | |
1002 | ||
1003 | PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__); | |
1004 | ||
1005 | /* | |
1006 | * Copy the new data into our accumulation buffer. | |
1007 | */ | |
1008 | skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]), | |
1009 | skb->len); | |
1010 | ep->mpa_pkt_len += skb->len; | |
1011 | ||
1012 | /* | |
1013 | * If we don't even have the mpa message, then bail. | |
1014 | * We'll continue process when more data arrives. | |
1015 | */ | |
1016 | if (ep->mpa_pkt_len < sizeof(*mpa)) | |
1017 | return; | |
1018 | ||
1019 | PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__); | |
1020 | stop_ep_timer(ep); | |
1021 | mpa = (struct mpa_message *) ep->mpa_pkt; | |
1022 | ||
1023 | /* | |
1024 | * Validate MPA Header. | |
1025 | */ | |
1026 | if (mpa->revision != mpa_rev) { | |
1027 | abort_connection(ep, skb, GFP_KERNEL); | |
1028 | return; | |
1029 | } | |
1030 | ||
1031 | if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) { | |
1032 | abort_connection(ep, skb, GFP_KERNEL); | |
1033 | return; | |
1034 | } | |
1035 | ||
1036 | plen = ntohs(mpa->private_data_size); | |
1037 | ||
1038 | /* | |
1039 | * Fail if there's too much private data. | |
1040 | */ | |
1041 | if (plen > MPA_MAX_PRIVATE_DATA) { | |
1042 | abort_connection(ep, skb, GFP_KERNEL); | |
1043 | return; | |
1044 | } | |
1045 | ||
1046 | /* | |
1047 | * If plen does not account for pkt size | |
1048 | */ | |
1049 | if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { | |
1050 | abort_connection(ep, skb, GFP_KERNEL); | |
1051 | return; | |
1052 | } | |
1053 | ep->plen = (u8) plen; | |
1054 | ||
1055 | /* | |
1056 | * If we don't have all the pdata yet, then bail. | |
1057 | */ | |
1058 | if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) | |
1059 | return; | |
1060 | ||
1061 | /* | |
1062 | * If we get here we have accumulated the entire mpa | |
1063 | * start reply message including private data. | |
1064 | */ | |
1065 | ep->mpa_attr.initiator = 0; | |
1066 | ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; | |
1067 | ep->mpa_attr.recv_marker_enabled = markers_enabled; | |
1068 | ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; | |
1069 | ep->mpa_attr.version = mpa_rev; | |
1070 | ep->mpa_attr.p2p_type = peer2peer ? p2p_type : | |
1071 | FW_RI_INIT_P2PTYPE_DISABLED; | |
1072 | PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " | |
1073 | "xmit_marker_enabled=%d, version=%d p2p_type=%d\n", __func__, | |
1074 | ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, | |
1075 | ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, | |
1076 | ep->mpa_attr.p2p_type); | |
1077 | ||
1078 | state_set(&ep->com, MPA_REQ_RCVD); | |
1079 | ||
1080 | /* drive upcall */ | |
1081 | connect_request_upcall(ep); | |
1082 | return; | |
1083 | } | |
1084 | ||
1085 | static int rx_data(struct c4iw_dev *dev, struct sk_buff *skb) | |
1086 | { | |
1087 | struct c4iw_ep *ep; | |
1088 | struct cpl_rx_data *hdr = cplhdr(skb); | |
1089 | unsigned int dlen = ntohs(hdr->len); | |
1090 | unsigned int tid = GET_TID(hdr); | |
1091 | struct tid_info *t = dev->rdev.lldi.tids; | |
1092 | ||
1093 | ep = lookup_tid(t, tid); | |
1094 | PDBG("%s ep %p tid %u dlen %u\n", __func__, ep, ep->hwtid, dlen); | |
1095 | skb_pull(skb, sizeof(*hdr)); | |
1096 | skb_trim(skb, dlen); | |
1097 | ||
1098 | ep->rcv_seq += dlen; | |
1099 | BUG_ON(ep->rcv_seq != (ntohl(hdr->seq) + dlen)); | |
1100 | ||
1101 | /* update RX credits */ | |
1102 | update_rx_credits(ep, dlen); | |
1103 | ||
1104 | switch (state_read(&ep->com)) { | |
1105 | case MPA_REQ_SENT: | |
1106 | process_mpa_reply(ep, skb); | |
1107 | break; | |
1108 | case MPA_REQ_WAIT: | |
1109 | process_mpa_request(ep, skb); | |
1110 | break; | |
1111 | case MPA_REP_SENT: | |
1112 | break; | |
1113 | default: | |
1114 | printk(KERN_ERR MOD "%s Unexpected streaming data." | |
1115 | " ep %p state %d tid %u\n", | |
1116 | __func__, ep, state_read(&ep->com), ep->hwtid); | |
1117 | ||
1118 | /* | |
1119 | * The ep will timeout and inform the ULP of the failure. | |
1120 | * See ep_timeout(). | |
1121 | */ | |
1122 | break; | |
1123 | } | |
1124 | return 0; | |
1125 | } | |
1126 | ||
1127 | static int abort_rpl(struct c4iw_dev *dev, struct sk_buff *skb) | |
1128 | { | |
1129 | struct c4iw_ep *ep; | |
1130 | struct cpl_abort_rpl_rss *rpl = cplhdr(skb); | |
cfdda9d7 SW |
1131 | int release = 0; |
1132 | unsigned int tid = GET_TID(rpl); | |
1133 | struct tid_info *t = dev->rdev.lldi.tids; | |
1134 | ||
1135 | ep = lookup_tid(t, tid); | |
1136 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1137 | BUG_ON(!ep); | |
2f5b48c3 | 1138 | mutex_lock(&ep->com.mutex); |
cfdda9d7 SW |
1139 | switch (ep->com.state) { |
1140 | case ABORTING: | |
1141 | __state_set(&ep->com, DEAD); | |
1142 | release = 1; | |
1143 | break; | |
1144 | default: | |
1145 | printk(KERN_ERR "%s ep %p state %d\n", | |
1146 | __func__, ep, ep->com.state); | |
1147 | break; | |
1148 | } | |
2f5b48c3 | 1149 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
1150 | |
1151 | if (release) | |
1152 | release_ep_resources(ep); | |
1153 | return 0; | |
1154 | } | |
1155 | ||
1156 | /* | |
1157 | * Return whether a failed active open has allocated a TID | |
1158 | */ | |
1159 | static inline int act_open_has_tid(int status) | |
1160 | { | |
1161 | return status != CPL_ERR_TCAM_FULL && status != CPL_ERR_CONN_EXIST && | |
1162 | status != CPL_ERR_ARP_MISS; | |
1163 | } | |
1164 | ||
1165 | static int act_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb) | |
1166 | { | |
1167 | struct c4iw_ep *ep; | |
1168 | struct cpl_act_open_rpl *rpl = cplhdr(skb); | |
1169 | unsigned int atid = GET_TID_TID(GET_AOPEN_ATID( | |
1170 | ntohl(rpl->atid_status))); | |
1171 | struct tid_info *t = dev->rdev.lldi.tids; | |
1172 | int status = GET_AOPEN_STATUS(ntohl(rpl->atid_status)); | |
1173 | ||
1174 | ep = lookup_atid(t, atid); | |
1175 | ||
1176 | PDBG("%s ep %p atid %u status %u errno %d\n", __func__, ep, atid, | |
1177 | status, status2errno(status)); | |
1178 | ||
1179 | if (status == CPL_ERR_RTX_NEG_ADVICE) { | |
1180 | printk(KERN_WARNING MOD "Connection problems for atid %u\n", | |
1181 | atid); | |
1182 | return 0; | |
1183 | } | |
1184 | ||
1185 | connect_reply_upcall(ep, status2errno(status)); | |
1186 | state_set(&ep->com, DEAD); | |
1187 | ||
1188 | if (status && act_open_has_tid(status)) | |
1189 | cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, GET_TID(rpl)); | |
1190 | ||
1191 | cxgb4_free_atid(t, atid); | |
1192 | dst_release(ep->dst); | |
1193 | cxgb4_l2t_release(ep->l2t); | |
1194 | c4iw_put_ep(&ep->com); | |
1195 | ||
1196 | return 0; | |
1197 | } | |
1198 | ||
1199 | static int pass_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb) | |
1200 | { | |
1201 | struct cpl_pass_open_rpl *rpl = cplhdr(skb); | |
1202 | struct tid_info *t = dev->rdev.lldi.tids; | |
1203 | unsigned int stid = GET_TID(rpl); | |
1204 | struct c4iw_listen_ep *ep = lookup_stid(t, stid); | |
1205 | ||
1206 | if (!ep) { | |
1207 | printk(KERN_ERR MOD "stid %d lookup failure!\n", stid); | |
1208 | return 0; | |
1209 | } | |
1210 | PDBG("%s ep %p status %d error %d\n", __func__, ep, | |
1211 | rpl->status, status2errno(rpl->status)); | |
aadc4df3 SW |
1212 | ep->com.wr_wait.ret = status2errno(rpl->status); |
1213 | ep->com.wr_wait.done = 1; | |
1214 | wake_up(&ep->com.wr_wait.wait); | |
cfdda9d7 SW |
1215 | |
1216 | return 0; | |
1217 | } | |
1218 | ||
1219 | static int listen_stop(struct c4iw_listen_ep *ep) | |
1220 | { | |
1221 | struct sk_buff *skb; | |
1222 | struct cpl_close_listsvr_req *req; | |
1223 | ||
1224 | PDBG("%s ep %p\n", __func__, ep); | |
1225 | skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); | |
1226 | if (!skb) { | |
1227 | printk(KERN_ERR MOD "%s - failed to alloc skb\n", __func__); | |
1228 | return -ENOMEM; | |
1229 | } | |
1230 | req = (struct cpl_close_listsvr_req *) skb_put(skb, sizeof(*req)); | |
1231 | INIT_TP_WR(req, 0); | |
1232 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_CLOSE_LISTSRV_REQ, | |
1233 | ep->stid)); | |
1234 | req->reply_ctrl = cpu_to_be16( | |
1235 | QUEUENO(ep->com.dev->rdev.lldi.rxq_ids[0])); | |
1236 | set_wr_txq(skb, CPL_PRIORITY_SETUP, 0); | |
1237 | return c4iw_ofld_send(&ep->com.dev->rdev, skb); | |
1238 | } | |
1239 | ||
1240 | static int close_listsrv_rpl(struct c4iw_dev *dev, struct sk_buff *skb) | |
1241 | { | |
1242 | struct cpl_close_listsvr_rpl *rpl = cplhdr(skb); | |
1243 | struct tid_info *t = dev->rdev.lldi.tids; | |
1244 | unsigned int stid = GET_TID(rpl); | |
1245 | struct c4iw_listen_ep *ep = lookup_stid(t, stid); | |
1246 | ||
1247 | PDBG("%s ep %p\n", __func__, ep); | |
aadc4df3 SW |
1248 | ep->com.wr_wait.ret = status2errno(rpl->status); |
1249 | ep->com.wr_wait.done = 1; | |
1250 | wake_up(&ep->com.wr_wait.wait); | |
cfdda9d7 SW |
1251 | return 0; |
1252 | } | |
1253 | ||
1254 | static void accept_cr(struct c4iw_ep *ep, __be32 peer_ip, struct sk_buff *skb, | |
1255 | struct cpl_pass_accept_req *req) | |
1256 | { | |
1257 | struct cpl_pass_accept_rpl *rpl; | |
1258 | unsigned int mtu_idx; | |
1259 | u64 opt0; | |
1260 | u32 opt2; | |
1261 | int wscale; | |
1262 | ||
1263 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1264 | BUG_ON(skb_cloned(skb)); | |
1265 | skb_trim(skb, sizeof(*rpl)); | |
1266 | skb_get(skb); | |
1267 | cxgb4_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx); | |
1268 | wscale = compute_wscale(rcv_win); | |
1269 | opt0 = KEEP_ALIVE(1) | | |
ba6d3925 | 1270 | DELACK(1) | |
cfdda9d7 SW |
1271 | WND_SCALE(wscale) | |
1272 | MSS_IDX(mtu_idx) | | |
1273 | L2T_IDX(ep->l2t->idx) | | |
1274 | TX_CHAN(ep->tx_chan) | | |
1275 | SMAC_SEL(ep->smac_idx) | | |
1276 | DSCP(ep->tos) | | |
1277 | RCV_BUFSIZ(rcv_win>>10); | |
1278 | opt2 = RX_CHANNEL(0) | | |
1279 | RSS_QUEUE_VALID | RSS_QUEUE(ep->rss_qid); | |
1280 | ||
1281 | if (enable_tcp_timestamps && req->tcpopt.tstamp) | |
1282 | opt2 |= TSTAMPS_EN(1); | |
1283 | if (enable_tcp_sack && req->tcpopt.sack) | |
1284 | opt2 |= SACK_EN(1); | |
1285 | if (wscale && enable_tcp_window_scaling) | |
1286 | opt2 |= WND_SCALE_EN(1); | |
1287 | ||
1288 | rpl = cplhdr(skb); | |
1289 | INIT_TP_WR(rpl, ep->hwtid); | |
1290 | OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL, | |
1291 | ep->hwtid)); | |
1292 | rpl->opt0 = cpu_to_be64(opt0); | |
1293 | rpl->opt2 = cpu_to_be32(opt2); | |
d4f1a5c6 | 1294 | set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx); |
cfdda9d7 SW |
1295 | c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
1296 | ||
1297 | return; | |
1298 | } | |
1299 | ||
1300 | static void reject_cr(struct c4iw_dev *dev, u32 hwtid, __be32 peer_ip, | |
1301 | struct sk_buff *skb) | |
1302 | { | |
1303 | PDBG("%s c4iw_dev %p tid %u peer_ip %x\n", __func__, dev, hwtid, | |
1304 | peer_ip); | |
1305 | BUG_ON(skb_cloned(skb)); | |
1306 | skb_trim(skb, sizeof(struct cpl_tid_release)); | |
1307 | skb_get(skb); | |
1308 | release_tid(&dev->rdev, hwtid, skb); | |
1309 | return; | |
1310 | } | |
1311 | ||
1312 | static void get_4tuple(struct cpl_pass_accept_req *req, | |
1313 | __be32 *local_ip, __be32 *peer_ip, | |
1314 | __be16 *local_port, __be16 *peer_port) | |
1315 | { | |
1316 | int eth_len = G_ETH_HDR_LEN(be32_to_cpu(req->hdr_len)); | |
1317 | int ip_len = G_IP_HDR_LEN(be32_to_cpu(req->hdr_len)); | |
1318 | struct iphdr *ip = (struct iphdr *)((u8 *)(req + 1) + eth_len); | |
1319 | struct tcphdr *tcp = (struct tcphdr *) | |
1320 | ((u8 *)(req + 1) + eth_len + ip_len); | |
1321 | ||
1322 | PDBG("%s saddr 0x%x daddr 0x%x sport %u dport %u\n", __func__, | |
1323 | ntohl(ip->saddr), ntohl(ip->daddr), ntohs(tcp->source), | |
1324 | ntohs(tcp->dest)); | |
1325 | ||
1326 | *peer_ip = ip->saddr; | |
1327 | *local_ip = ip->daddr; | |
1328 | *peer_port = tcp->source; | |
1329 | *local_port = tcp->dest; | |
1330 | ||
1331 | return; | |
1332 | } | |
1333 | ||
1334 | static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb) | |
1335 | { | |
1336 | struct c4iw_ep *child_ep, *parent_ep; | |
1337 | struct cpl_pass_accept_req *req = cplhdr(skb); | |
1338 | unsigned int stid = GET_POPEN_TID(ntohl(req->tos_stid)); | |
1339 | struct tid_info *t = dev->rdev.lldi.tids; | |
1340 | unsigned int hwtid = GET_TID(req); | |
1341 | struct dst_entry *dst; | |
1342 | struct l2t_entry *l2t; | |
1343 | struct rtable *rt; | |
1344 | __be32 local_ip, peer_ip; | |
1345 | __be16 local_port, peer_port; | |
1346 | struct net_device *pdev; | |
1347 | u32 tx_chan, smac_idx; | |
1348 | u16 rss_qid; | |
1349 | u32 mtu; | |
1350 | int step; | |
d4f1a5c6 | 1351 | int txq_idx, ctrlq_idx; |
cfdda9d7 SW |
1352 | |
1353 | parent_ep = lookup_stid(t, stid); | |
1354 | PDBG("%s parent ep %p tid %u\n", __func__, parent_ep, hwtid); | |
1355 | ||
1356 | get_4tuple(req, &local_ip, &peer_ip, &local_port, &peer_port); | |
1357 | ||
1358 | if (state_read(&parent_ep->com) != LISTEN) { | |
1359 | printk(KERN_ERR "%s - listening ep not in LISTEN\n", | |
1360 | __func__); | |
1361 | goto reject; | |
1362 | } | |
1363 | ||
1364 | /* Find output route */ | |
1365 | rt = find_route(dev, local_ip, peer_ip, local_port, peer_port, | |
1366 | GET_POPEN_TOS(ntohl(req->tos_stid))); | |
1367 | if (!rt) { | |
1368 | printk(KERN_ERR MOD "%s - failed to find dst entry!\n", | |
1369 | __func__); | |
1370 | goto reject; | |
1371 | } | |
d8d1f30b | 1372 | dst = &rt->dst; |
cfdda9d7 SW |
1373 | if (dst->neighbour->dev->flags & IFF_LOOPBACK) { |
1374 | pdev = ip_dev_find(&init_net, peer_ip); | |
1375 | BUG_ON(!pdev); | |
1376 | l2t = cxgb4_l2t_get(dev->rdev.lldi.l2t, dst->neighbour, | |
1377 | pdev, 0); | |
1378 | mtu = pdev->mtu; | |
1379 | tx_chan = cxgb4_port_chan(pdev); | |
2c5934bf | 1380 | smac_idx = (cxgb4_port_viid(pdev) & 0x7F) << 1; |
cfdda9d7 SW |
1381 | step = dev->rdev.lldi.ntxq / dev->rdev.lldi.nchan; |
1382 | txq_idx = cxgb4_port_idx(pdev) * step; | |
d4f1a5c6 | 1383 | ctrlq_idx = cxgb4_port_idx(pdev); |
cfdda9d7 SW |
1384 | step = dev->rdev.lldi.nrxq / dev->rdev.lldi.nchan; |
1385 | rss_qid = dev->rdev.lldi.rxq_ids[cxgb4_port_idx(pdev) * step]; | |
1386 | dev_put(pdev); | |
1387 | } else { | |
1388 | l2t = cxgb4_l2t_get(dev->rdev.lldi.l2t, dst->neighbour, | |
1389 | dst->neighbour->dev, 0); | |
1390 | mtu = dst_mtu(dst); | |
1391 | tx_chan = cxgb4_port_chan(dst->neighbour->dev); | |
2c5934bf | 1392 | smac_idx = (cxgb4_port_viid(dst->neighbour->dev) & 0x7F) << 1; |
cfdda9d7 SW |
1393 | step = dev->rdev.lldi.ntxq / dev->rdev.lldi.nchan; |
1394 | txq_idx = cxgb4_port_idx(dst->neighbour->dev) * step; | |
d4f1a5c6 | 1395 | ctrlq_idx = cxgb4_port_idx(dst->neighbour->dev); |
cfdda9d7 SW |
1396 | step = dev->rdev.lldi.nrxq / dev->rdev.lldi.nchan; |
1397 | rss_qid = dev->rdev.lldi.rxq_ids[ | |
1398 | cxgb4_port_idx(dst->neighbour->dev) * step]; | |
1399 | } | |
1400 | if (!l2t) { | |
1401 | printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n", | |
1402 | __func__); | |
1403 | dst_release(dst); | |
1404 | goto reject; | |
1405 | } | |
1406 | ||
1407 | child_ep = alloc_ep(sizeof(*child_ep), GFP_KERNEL); | |
1408 | if (!child_ep) { | |
1409 | printk(KERN_ERR MOD "%s - failed to allocate ep entry!\n", | |
1410 | __func__); | |
1411 | cxgb4_l2t_release(l2t); | |
1412 | dst_release(dst); | |
1413 | goto reject; | |
1414 | } | |
1415 | state_set(&child_ep->com, CONNECTING); | |
1416 | child_ep->com.dev = dev; | |
1417 | child_ep->com.cm_id = NULL; | |
1418 | child_ep->com.local_addr.sin_family = PF_INET; | |
1419 | child_ep->com.local_addr.sin_port = local_port; | |
1420 | child_ep->com.local_addr.sin_addr.s_addr = local_ip; | |
1421 | child_ep->com.remote_addr.sin_family = PF_INET; | |
1422 | child_ep->com.remote_addr.sin_port = peer_port; | |
1423 | child_ep->com.remote_addr.sin_addr.s_addr = peer_ip; | |
1424 | c4iw_get_ep(&parent_ep->com); | |
1425 | child_ep->parent_ep = parent_ep; | |
1426 | child_ep->tos = GET_POPEN_TOS(ntohl(req->tos_stid)); | |
1427 | child_ep->l2t = l2t; | |
1428 | child_ep->dst = dst; | |
1429 | child_ep->hwtid = hwtid; | |
1430 | child_ep->tx_chan = tx_chan; | |
1431 | child_ep->smac_idx = smac_idx; | |
1432 | child_ep->rss_qid = rss_qid; | |
1433 | child_ep->mtu = mtu; | |
1434 | child_ep->txq_idx = txq_idx; | |
d4f1a5c6 | 1435 | child_ep->ctrlq_idx = ctrlq_idx; |
cfdda9d7 SW |
1436 | |
1437 | PDBG("%s tx_chan %u smac_idx %u rss_qid %u\n", __func__, | |
1438 | tx_chan, smac_idx, rss_qid); | |
1439 | ||
1440 | init_timer(&child_ep->timer); | |
1441 | cxgb4_insert_tid(t, child_ep, hwtid); | |
1442 | accept_cr(child_ep, peer_ip, skb, req); | |
1443 | goto out; | |
1444 | reject: | |
1445 | reject_cr(dev, hwtid, peer_ip, skb); | |
1446 | out: | |
1447 | return 0; | |
1448 | } | |
1449 | ||
1450 | static int pass_establish(struct c4iw_dev *dev, struct sk_buff *skb) | |
1451 | { | |
1452 | struct c4iw_ep *ep; | |
1453 | struct cpl_pass_establish *req = cplhdr(skb); | |
1454 | struct tid_info *t = dev->rdev.lldi.tids; | |
1455 | unsigned int tid = GET_TID(req); | |
1456 | ||
1457 | ep = lookup_tid(t, tid); | |
1458 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1459 | ep->snd_seq = be32_to_cpu(req->snd_isn); | |
1460 | ep->rcv_seq = be32_to_cpu(req->rcv_isn); | |
1461 | ||
1462 | set_emss(ep, ntohs(req->tcp_opt)); | |
1463 | ||
1464 | dst_confirm(ep->dst); | |
1465 | state_set(&ep->com, MPA_REQ_WAIT); | |
1466 | start_ep_timer(ep); | |
1467 | send_flowc(ep, skb); | |
1468 | ||
1469 | return 0; | |
1470 | } | |
1471 | ||
1472 | static int peer_close(struct c4iw_dev *dev, struct sk_buff *skb) | |
1473 | { | |
1474 | struct cpl_peer_close *hdr = cplhdr(skb); | |
1475 | struct c4iw_ep *ep; | |
1476 | struct c4iw_qp_attributes attrs; | |
cfdda9d7 SW |
1477 | int disconnect = 1; |
1478 | int release = 0; | |
1479 | int closing = 0; | |
1480 | struct tid_info *t = dev->rdev.lldi.tids; | |
1481 | unsigned int tid = GET_TID(hdr); | |
cfdda9d7 SW |
1482 | |
1483 | ep = lookup_tid(t, tid); | |
1484 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1485 | dst_confirm(ep->dst); | |
1486 | ||
2f5b48c3 | 1487 | mutex_lock(&ep->com.mutex); |
cfdda9d7 SW |
1488 | switch (ep->com.state) { |
1489 | case MPA_REQ_WAIT: | |
1490 | __state_set(&ep->com, CLOSING); | |
1491 | break; | |
1492 | case MPA_REQ_SENT: | |
1493 | __state_set(&ep->com, CLOSING); | |
1494 | connect_reply_upcall(ep, -ECONNRESET); | |
1495 | break; | |
1496 | case MPA_REQ_RCVD: | |
1497 | ||
1498 | /* | |
1499 | * We're gonna mark this puppy DEAD, but keep | |
1500 | * the reference on it until the ULP accepts or | |
1501 | * rejects the CR. Also wake up anyone waiting | |
1502 | * in rdma connection migration (see c4iw_accept_cr()). | |
1503 | */ | |
1504 | __state_set(&ep->com, CLOSING); | |
aadc4df3 SW |
1505 | ep->com.wr_wait.done = 1; |
1506 | ep->com.wr_wait.ret = -ECONNRESET; | |
cfdda9d7 | 1507 | PDBG("waking up ep %p tid %u\n", ep, ep->hwtid); |
aadc4df3 | 1508 | wake_up(&ep->com.wr_wait.wait); |
cfdda9d7 SW |
1509 | break; |
1510 | case MPA_REP_SENT: | |
1511 | __state_set(&ep->com, CLOSING); | |
aadc4df3 SW |
1512 | ep->com.wr_wait.done = 1; |
1513 | ep->com.wr_wait.ret = -ECONNRESET; | |
cfdda9d7 | 1514 | PDBG("waking up ep %p tid %u\n", ep, ep->hwtid); |
aadc4df3 | 1515 | wake_up(&ep->com.wr_wait.wait); |
cfdda9d7 SW |
1516 | break; |
1517 | case FPDU_MODE: | |
ca5a2202 | 1518 | start_ep_timer(ep); |
cfdda9d7 SW |
1519 | __state_set(&ep->com, CLOSING); |
1520 | closing = 1; | |
1521 | peer_close_upcall(ep); | |
1522 | break; | |
1523 | case ABORTING: | |
1524 | disconnect = 0; | |
1525 | break; | |
1526 | case CLOSING: | |
1527 | __state_set(&ep->com, MORIBUND); | |
1528 | disconnect = 0; | |
1529 | break; | |
1530 | case MORIBUND: | |
ca5a2202 | 1531 | stop_ep_timer(ep); |
cfdda9d7 SW |
1532 | if (ep->com.cm_id && ep->com.qp) { |
1533 | attrs.next_state = C4IW_QP_STATE_IDLE; | |
1534 | c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, | |
1535 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); | |
1536 | } | |
1537 | close_complete_upcall(ep); | |
1538 | __state_set(&ep->com, DEAD); | |
1539 | release = 1; | |
1540 | disconnect = 0; | |
1541 | break; | |
1542 | case DEAD: | |
1543 | disconnect = 0; | |
1544 | break; | |
1545 | default: | |
1546 | BUG_ON(1); | |
1547 | } | |
2f5b48c3 | 1548 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
1549 | if (closing) { |
1550 | attrs.next_state = C4IW_QP_STATE_CLOSING; | |
1551 | c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, | |
1552 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); | |
1553 | } | |
cfdda9d7 SW |
1554 | if (disconnect) |
1555 | c4iw_ep_disconnect(ep, 0, GFP_KERNEL); | |
1556 | if (release) | |
1557 | release_ep_resources(ep); | |
1558 | return 0; | |
1559 | } | |
1560 | ||
1561 | /* | |
1562 | * Returns whether an ABORT_REQ_RSS message is a negative advice. | |
1563 | */ | |
1564 | static int is_neg_adv_abort(unsigned int status) | |
1565 | { | |
1566 | return status == CPL_ERR_RTX_NEG_ADVICE || | |
1567 | status == CPL_ERR_PERSIST_NEG_ADVICE; | |
1568 | } | |
1569 | ||
1570 | static int peer_abort(struct c4iw_dev *dev, struct sk_buff *skb) | |
1571 | { | |
1572 | struct cpl_abort_req_rss *req = cplhdr(skb); | |
1573 | struct c4iw_ep *ep; | |
1574 | struct cpl_abort_rpl *rpl; | |
1575 | struct sk_buff *rpl_skb; | |
1576 | struct c4iw_qp_attributes attrs; | |
1577 | int ret; | |
1578 | int release = 0; | |
cfdda9d7 SW |
1579 | struct tid_info *t = dev->rdev.lldi.tids; |
1580 | unsigned int tid = GET_TID(req); | |
cfdda9d7 SW |
1581 | |
1582 | ep = lookup_tid(t, tid); | |
1583 | if (is_neg_adv_abort(req->status)) { | |
1584 | PDBG("%s neg_adv_abort ep %p tid %u\n", __func__, ep, | |
1585 | ep->hwtid); | |
1586 | return 0; | |
1587 | } | |
cfdda9d7 SW |
1588 | PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid, |
1589 | ep->com.state); | |
2f5b48c3 SW |
1590 | |
1591 | /* | |
1592 | * Wake up any threads in rdma_init() or rdma_fini(). | |
1593 | */ | |
1594 | ep->com.wr_wait.done = 1; | |
1595 | ep->com.wr_wait.ret = -ECONNRESET; | |
1596 | wake_up(&ep->com.wr_wait.wait); | |
1597 | ||
1598 | mutex_lock(&ep->com.mutex); | |
cfdda9d7 SW |
1599 | switch (ep->com.state) { |
1600 | case CONNECTING: | |
1601 | break; | |
1602 | case MPA_REQ_WAIT: | |
ca5a2202 | 1603 | stop_ep_timer(ep); |
cfdda9d7 SW |
1604 | break; |
1605 | case MPA_REQ_SENT: | |
ca5a2202 | 1606 | stop_ep_timer(ep); |
cfdda9d7 SW |
1607 | connect_reply_upcall(ep, -ECONNRESET); |
1608 | break; | |
1609 | case MPA_REP_SENT: | |
cfdda9d7 SW |
1610 | break; |
1611 | case MPA_REQ_RCVD: | |
cfdda9d7 SW |
1612 | break; |
1613 | case MORIBUND: | |
1614 | case CLOSING: | |
ca5a2202 | 1615 | stop_ep_timer(ep); |
cfdda9d7 SW |
1616 | /*FALLTHROUGH*/ |
1617 | case FPDU_MODE: | |
1618 | if (ep->com.cm_id && ep->com.qp) { | |
1619 | attrs.next_state = C4IW_QP_STATE_ERROR; | |
1620 | ret = c4iw_modify_qp(ep->com.qp->rhp, | |
1621 | ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, | |
1622 | &attrs, 1); | |
1623 | if (ret) | |
1624 | printk(KERN_ERR MOD | |
1625 | "%s - qp <- error failed!\n", | |
1626 | __func__); | |
1627 | } | |
1628 | peer_abort_upcall(ep); | |
1629 | break; | |
1630 | case ABORTING: | |
1631 | break; | |
1632 | case DEAD: | |
1633 | PDBG("%s PEER_ABORT IN DEAD STATE!!!!\n", __func__); | |
2f5b48c3 | 1634 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
1635 | return 0; |
1636 | default: | |
1637 | BUG_ON(1); | |
1638 | break; | |
1639 | } | |
1640 | dst_confirm(ep->dst); | |
1641 | if (ep->com.state != ABORTING) { | |
1642 | __state_set(&ep->com, DEAD); | |
1643 | release = 1; | |
1644 | } | |
2f5b48c3 | 1645 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
1646 | |
1647 | rpl_skb = get_skb(skb, sizeof(*rpl), GFP_KERNEL); | |
1648 | if (!rpl_skb) { | |
1649 | printk(KERN_ERR MOD "%s - cannot allocate skb!\n", | |
1650 | __func__); | |
1651 | release = 1; | |
1652 | goto out; | |
1653 | } | |
1654 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
1655 | rpl = (struct cpl_abort_rpl *) skb_put(rpl_skb, sizeof(*rpl)); | |
1656 | INIT_TP_WR(rpl, ep->hwtid); | |
1657 | OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_RPL, ep->hwtid)); | |
1658 | rpl->cmd = CPL_ABORT_NO_RST; | |
1659 | c4iw_ofld_send(&ep->com.dev->rdev, rpl_skb); | |
1660 | out: | |
cfdda9d7 SW |
1661 | if (release) |
1662 | release_ep_resources(ep); | |
1663 | return 0; | |
1664 | } | |
1665 | ||
1666 | static int close_con_rpl(struct c4iw_dev *dev, struct sk_buff *skb) | |
1667 | { | |
1668 | struct c4iw_ep *ep; | |
1669 | struct c4iw_qp_attributes attrs; | |
1670 | struct cpl_close_con_rpl *rpl = cplhdr(skb); | |
cfdda9d7 SW |
1671 | int release = 0; |
1672 | struct tid_info *t = dev->rdev.lldi.tids; | |
1673 | unsigned int tid = GET_TID(rpl); | |
cfdda9d7 SW |
1674 | |
1675 | ep = lookup_tid(t, tid); | |
1676 | ||
1677 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1678 | BUG_ON(!ep); | |
1679 | ||
1680 | /* The cm_id may be null if we failed to connect */ | |
2f5b48c3 | 1681 | mutex_lock(&ep->com.mutex); |
cfdda9d7 SW |
1682 | switch (ep->com.state) { |
1683 | case CLOSING: | |
1684 | __state_set(&ep->com, MORIBUND); | |
1685 | break; | |
1686 | case MORIBUND: | |
ca5a2202 | 1687 | stop_ep_timer(ep); |
cfdda9d7 SW |
1688 | if ((ep->com.cm_id) && (ep->com.qp)) { |
1689 | attrs.next_state = C4IW_QP_STATE_IDLE; | |
1690 | c4iw_modify_qp(ep->com.qp->rhp, | |
1691 | ep->com.qp, | |
1692 | C4IW_QP_ATTR_NEXT_STATE, | |
1693 | &attrs, 1); | |
1694 | } | |
1695 | close_complete_upcall(ep); | |
1696 | __state_set(&ep->com, DEAD); | |
1697 | release = 1; | |
1698 | break; | |
1699 | case ABORTING: | |
1700 | case DEAD: | |
1701 | break; | |
1702 | default: | |
1703 | BUG_ON(1); | |
1704 | break; | |
1705 | } | |
2f5b48c3 | 1706 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
1707 | if (release) |
1708 | release_ep_resources(ep); | |
1709 | return 0; | |
1710 | } | |
1711 | ||
1712 | static int terminate(struct c4iw_dev *dev, struct sk_buff *skb) | |
1713 | { | |
0e42c1f4 | 1714 | struct cpl_rdma_terminate *rpl = cplhdr(skb); |
cfdda9d7 | 1715 | struct tid_info *t = dev->rdev.lldi.tids; |
0e42c1f4 SW |
1716 | unsigned int tid = GET_TID(rpl); |
1717 | struct c4iw_ep *ep; | |
1718 | struct c4iw_qp_attributes attrs; | |
cfdda9d7 SW |
1719 | |
1720 | ep = lookup_tid(t, tid); | |
0e42c1f4 | 1721 | BUG_ON(!ep); |
cfdda9d7 | 1722 | |
0e42c1f4 SW |
1723 | if (ep->com.qp) { |
1724 | printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", tid, | |
1725 | ep->com.qp->wq.sq.qid); | |
1726 | attrs.next_state = C4IW_QP_STATE_TERMINATE; | |
1727 | c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, | |
1728 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); | |
1729 | } else | |
1730 | printk(KERN_WARNING MOD "TERM received tid %u no qp\n", tid); | |
cfdda9d7 | 1731 | |
cfdda9d7 SW |
1732 | return 0; |
1733 | } | |
1734 | ||
1735 | /* | |
1736 | * Upcall from the adapter indicating data has been transmitted. | |
1737 | * For us its just the single MPA request or reply. We can now free | |
1738 | * the skb holding the mpa message. | |
1739 | */ | |
1740 | static int fw4_ack(struct c4iw_dev *dev, struct sk_buff *skb) | |
1741 | { | |
1742 | struct c4iw_ep *ep; | |
1743 | struct cpl_fw4_ack *hdr = cplhdr(skb); | |
1744 | u8 credits = hdr->credits; | |
1745 | unsigned int tid = GET_TID(hdr); | |
1746 | struct tid_info *t = dev->rdev.lldi.tids; | |
1747 | ||
1748 | ||
1749 | ep = lookup_tid(t, tid); | |
1750 | PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits); | |
1751 | if (credits == 0) { | |
aa1ad260 JP |
1752 | PDBG("%s 0 credit ack ep %p tid %u state %u\n", |
1753 | __func__, ep, ep->hwtid, state_read(&ep->com)); | |
cfdda9d7 SW |
1754 | return 0; |
1755 | } | |
1756 | ||
1757 | dst_confirm(ep->dst); | |
1758 | if (ep->mpa_skb) { | |
1759 | PDBG("%s last streaming msg ack ep %p tid %u state %u " | |
1760 | "initiator %u freeing skb\n", __func__, ep, ep->hwtid, | |
1761 | state_read(&ep->com), ep->mpa_attr.initiator ? 1 : 0); | |
1762 | kfree_skb(ep->mpa_skb); | |
1763 | ep->mpa_skb = NULL; | |
1764 | } | |
1765 | return 0; | |
1766 | } | |
1767 | ||
cfdda9d7 SW |
1768 | int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) |
1769 | { | |
1770 | int err; | |
1771 | struct c4iw_ep *ep = to_ep(cm_id); | |
1772 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1773 | ||
1774 | if (state_read(&ep->com) == DEAD) { | |
1775 | c4iw_put_ep(&ep->com); | |
1776 | return -ECONNRESET; | |
1777 | } | |
1778 | BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD); | |
1779 | if (mpa_rev == 0) | |
1780 | abort_connection(ep, NULL, GFP_KERNEL); | |
1781 | else { | |
1782 | err = send_mpa_reject(ep, pdata, pdata_len); | |
1783 | err = c4iw_ep_disconnect(ep, 0, GFP_KERNEL); | |
1784 | } | |
1785 | c4iw_put_ep(&ep->com); | |
1786 | return 0; | |
1787 | } | |
1788 | ||
1789 | int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) | |
1790 | { | |
1791 | int err; | |
1792 | struct c4iw_qp_attributes attrs; | |
1793 | enum c4iw_qp_attr_mask mask; | |
1794 | struct c4iw_ep *ep = to_ep(cm_id); | |
1795 | struct c4iw_dev *h = to_c4iw_dev(cm_id->device); | |
1796 | struct c4iw_qp *qp = get_qhp(h, conn_param->qpn); | |
1797 | ||
1798 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1799 | if (state_read(&ep->com) == DEAD) { | |
1800 | err = -ECONNRESET; | |
1801 | goto err; | |
1802 | } | |
1803 | ||
1804 | BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD); | |
1805 | BUG_ON(!qp); | |
1806 | ||
be4c9bad RD |
1807 | if ((conn_param->ord > c4iw_max_read_depth) || |
1808 | (conn_param->ird > c4iw_max_read_depth)) { | |
cfdda9d7 SW |
1809 | abort_connection(ep, NULL, GFP_KERNEL); |
1810 | err = -EINVAL; | |
1811 | goto err; | |
1812 | } | |
1813 | ||
1814 | cm_id->add_ref(cm_id); | |
1815 | ep->com.cm_id = cm_id; | |
1816 | ep->com.qp = qp; | |
1817 | ||
1818 | ep->ird = conn_param->ird; | |
1819 | ep->ord = conn_param->ord; | |
1820 | ||
1821 | if (peer2peer && ep->ird == 0) | |
1822 | ep->ird = 1; | |
1823 | ||
1824 | PDBG("%s %d ird %d ord %d\n", __func__, __LINE__, ep->ird, ep->ord); | |
1825 | ||
1826 | /* bind QP to EP and move to RTS */ | |
1827 | attrs.mpa_attr = ep->mpa_attr; | |
1828 | attrs.max_ird = ep->ird; | |
1829 | attrs.max_ord = ep->ord; | |
1830 | attrs.llp_stream_handle = ep; | |
1831 | attrs.next_state = C4IW_QP_STATE_RTS; | |
1832 | ||
1833 | /* bind QP and TID with INIT_WR */ | |
1834 | mask = C4IW_QP_ATTR_NEXT_STATE | | |
1835 | C4IW_QP_ATTR_LLP_STREAM_HANDLE | | |
1836 | C4IW_QP_ATTR_MPA_ATTR | | |
1837 | C4IW_QP_ATTR_MAX_IRD | | |
1838 | C4IW_QP_ATTR_MAX_ORD; | |
1839 | ||
1840 | err = c4iw_modify_qp(ep->com.qp->rhp, | |
1841 | ep->com.qp, mask, &attrs, 1); | |
1842 | if (err) | |
1843 | goto err1; | |
1844 | err = send_mpa_reply(ep, conn_param->private_data, | |
1845 | conn_param->private_data_len); | |
1846 | if (err) | |
1847 | goto err1; | |
1848 | ||
1849 | state_set(&ep->com, FPDU_MODE); | |
1850 | established_upcall(ep); | |
1851 | c4iw_put_ep(&ep->com); | |
1852 | return 0; | |
1853 | err1: | |
1854 | ep->com.cm_id = NULL; | |
1855 | ep->com.qp = NULL; | |
1856 | cm_id->rem_ref(cm_id); | |
1857 | err: | |
1858 | c4iw_put_ep(&ep->com); | |
1859 | return err; | |
1860 | } | |
1861 | ||
1862 | int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) | |
1863 | { | |
1864 | int err = 0; | |
1865 | struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); | |
1866 | struct c4iw_ep *ep; | |
1867 | struct rtable *rt; | |
1868 | struct net_device *pdev; | |
1869 | int step; | |
1870 | ||
be4c9bad RD |
1871 | if ((conn_param->ord > c4iw_max_read_depth) || |
1872 | (conn_param->ird > c4iw_max_read_depth)) { | |
1873 | err = -EINVAL; | |
1874 | goto out; | |
1875 | } | |
cfdda9d7 SW |
1876 | ep = alloc_ep(sizeof(*ep), GFP_KERNEL); |
1877 | if (!ep) { | |
1878 | printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); | |
1879 | err = -ENOMEM; | |
1880 | goto out; | |
1881 | } | |
1882 | init_timer(&ep->timer); | |
1883 | ep->plen = conn_param->private_data_len; | |
1884 | if (ep->plen) | |
1885 | memcpy(ep->mpa_pkt + sizeof(struct mpa_message), | |
1886 | conn_param->private_data, ep->plen); | |
1887 | ep->ird = conn_param->ird; | |
1888 | ep->ord = conn_param->ord; | |
1889 | ||
1890 | if (peer2peer && ep->ord == 0) | |
1891 | ep->ord = 1; | |
1892 | ||
1893 | cm_id->add_ref(cm_id); | |
1894 | ep->com.dev = dev; | |
1895 | ep->com.cm_id = cm_id; | |
1896 | ep->com.qp = get_qhp(dev, conn_param->qpn); | |
1897 | BUG_ON(!ep->com.qp); | |
1898 | PDBG("%s qpn 0x%x qp %p cm_id %p\n", __func__, conn_param->qpn, | |
1899 | ep->com.qp, cm_id); | |
1900 | ||
1901 | /* | |
1902 | * Allocate an active TID to initiate a TCP connection. | |
1903 | */ | |
1904 | ep->atid = cxgb4_alloc_atid(dev->rdev.lldi.tids, ep); | |
1905 | if (ep->atid == -1) { | |
1906 | printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __func__); | |
1907 | err = -ENOMEM; | |
1908 | goto fail2; | |
1909 | } | |
1910 | ||
1911 | PDBG("%s saddr 0x%x sport 0x%x raddr 0x%x rport 0x%x\n", __func__, | |
1912 | ntohl(cm_id->local_addr.sin_addr.s_addr), | |
1913 | ntohs(cm_id->local_addr.sin_port), | |
1914 | ntohl(cm_id->remote_addr.sin_addr.s_addr), | |
1915 | ntohs(cm_id->remote_addr.sin_port)); | |
1916 | ||
1917 | /* find a route */ | |
1918 | rt = find_route(dev, | |
1919 | cm_id->local_addr.sin_addr.s_addr, | |
1920 | cm_id->remote_addr.sin_addr.s_addr, | |
1921 | cm_id->local_addr.sin_port, | |
1922 | cm_id->remote_addr.sin_port, 0); | |
1923 | if (!rt) { | |
1924 | printk(KERN_ERR MOD "%s - cannot find route.\n", __func__); | |
1925 | err = -EHOSTUNREACH; | |
1926 | goto fail3; | |
1927 | } | |
d8d1f30b | 1928 | ep->dst = &rt->dst; |
cfdda9d7 SW |
1929 | |
1930 | /* get a l2t entry */ | |
1931 | if (ep->dst->neighbour->dev->flags & IFF_LOOPBACK) { | |
1932 | PDBG("%s LOOPBACK\n", __func__); | |
1933 | pdev = ip_dev_find(&init_net, | |
1934 | cm_id->remote_addr.sin_addr.s_addr); | |
1935 | ep->l2t = cxgb4_l2t_get(ep->com.dev->rdev.lldi.l2t, | |
1936 | ep->dst->neighbour, | |
1937 | pdev, 0); | |
1938 | ep->mtu = pdev->mtu; | |
1939 | ep->tx_chan = cxgb4_port_chan(pdev); | |
2c5934bf | 1940 | ep->smac_idx = (cxgb4_port_viid(pdev) & 0x7F) << 1; |
cfdda9d7 SW |
1941 | step = ep->com.dev->rdev.lldi.ntxq / |
1942 | ep->com.dev->rdev.lldi.nchan; | |
1943 | ep->txq_idx = cxgb4_port_idx(pdev) * step; | |
1944 | step = ep->com.dev->rdev.lldi.nrxq / | |
1945 | ep->com.dev->rdev.lldi.nchan; | |
d4f1a5c6 | 1946 | ep->ctrlq_idx = cxgb4_port_idx(pdev); |
cfdda9d7 SW |
1947 | ep->rss_qid = ep->com.dev->rdev.lldi.rxq_ids[ |
1948 | cxgb4_port_idx(pdev) * step]; | |
1949 | dev_put(pdev); | |
1950 | } else { | |
1951 | ep->l2t = cxgb4_l2t_get(ep->com.dev->rdev.lldi.l2t, | |
1952 | ep->dst->neighbour, | |
1953 | ep->dst->neighbour->dev, 0); | |
1954 | ep->mtu = dst_mtu(ep->dst); | |
1955 | ep->tx_chan = cxgb4_port_chan(ep->dst->neighbour->dev); | |
2c5934bf SW |
1956 | ep->smac_idx = (cxgb4_port_viid(ep->dst->neighbour->dev) & |
1957 | 0x7F) << 1; | |
cfdda9d7 SW |
1958 | step = ep->com.dev->rdev.lldi.ntxq / |
1959 | ep->com.dev->rdev.lldi.nchan; | |
1960 | ep->txq_idx = cxgb4_port_idx(ep->dst->neighbour->dev) * step; | |
d4f1a5c6 | 1961 | ep->ctrlq_idx = cxgb4_port_idx(ep->dst->neighbour->dev); |
cfdda9d7 SW |
1962 | step = ep->com.dev->rdev.lldi.nrxq / |
1963 | ep->com.dev->rdev.lldi.nchan; | |
1964 | ep->rss_qid = ep->com.dev->rdev.lldi.rxq_ids[ | |
1965 | cxgb4_port_idx(ep->dst->neighbour->dev) * step]; | |
1966 | } | |
1967 | if (!ep->l2t) { | |
1968 | printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__); | |
1969 | err = -ENOMEM; | |
1970 | goto fail4; | |
1971 | } | |
1972 | ||
1973 | PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n", | |
1974 | __func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid, | |
1975 | ep->l2t->idx); | |
1976 | ||
1977 | state_set(&ep->com, CONNECTING); | |
1978 | ep->tos = 0; | |
1979 | ep->com.local_addr = cm_id->local_addr; | |
1980 | ep->com.remote_addr = cm_id->remote_addr; | |
1981 | ||
1982 | /* send connect request to rnic */ | |
1983 | err = send_connect(ep); | |
1984 | if (!err) | |
1985 | goto out; | |
1986 | ||
1987 | cxgb4_l2t_release(ep->l2t); | |
1988 | fail4: | |
1989 | dst_release(ep->dst); | |
1990 | fail3: | |
1991 | cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid); | |
1992 | fail2: | |
1993 | cm_id->rem_ref(cm_id); | |
1994 | c4iw_put_ep(&ep->com); | |
1995 | out: | |
1996 | return err; | |
1997 | } | |
1998 | ||
1999 | int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog) | |
2000 | { | |
2001 | int err = 0; | |
2002 | struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); | |
2003 | struct c4iw_listen_ep *ep; | |
2004 | ||
2005 | ||
2006 | might_sleep(); | |
2007 | ||
2008 | ep = alloc_ep(sizeof(*ep), GFP_KERNEL); | |
2009 | if (!ep) { | |
2010 | printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); | |
2011 | err = -ENOMEM; | |
2012 | goto fail1; | |
2013 | } | |
2014 | PDBG("%s ep %p\n", __func__, ep); | |
2015 | cm_id->add_ref(cm_id); | |
2016 | ep->com.cm_id = cm_id; | |
2017 | ep->com.dev = dev; | |
2018 | ep->backlog = backlog; | |
2019 | ep->com.local_addr = cm_id->local_addr; | |
2020 | ||
2021 | /* | |
2022 | * Allocate a server TID. | |
2023 | */ | |
2024 | ep->stid = cxgb4_alloc_stid(dev->rdev.lldi.tids, PF_INET, ep); | |
2025 | if (ep->stid == -1) { | |
be4c9bad | 2026 | printk(KERN_ERR MOD "%s - cannot alloc stid.\n", __func__); |
cfdda9d7 SW |
2027 | err = -ENOMEM; |
2028 | goto fail2; | |
2029 | } | |
2030 | ||
2031 | state_set(&ep->com, LISTEN); | |
aadc4df3 | 2032 | c4iw_init_wr_wait(&ep->com.wr_wait); |
cfdda9d7 SW |
2033 | err = cxgb4_create_server(ep->com.dev->rdev.lldi.ports[0], ep->stid, |
2034 | ep->com.local_addr.sin_addr.s_addr, | |
2035 | ep->com.local_addr.sin_port, | |
2036 | ep->com.dev->rdev.lldi.rxq_ids[0]); | |
2037 | if (err) | |
2038 | goto fail3; | |
2039 | ||
2040 | /* wait for pass_open_rpl */ | |
aadc4df3 SW |
2041 | err = c4iw_wait_for_reply(&ep->com.dev->rdev, &ep->com.wr_wait, 0, 0, |
2042 | __func__); | |
cfdda9d7 SW |
2043 | if (!err) { |
2044 | cm_id->provider_data = ep; | |
2045 | goto out; | |
2046 | } | |
2047 | fail3: | |
2048 | cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid, PF_INET); | |
2049 | fail2: | |
2050 | cm_id->rem_ref(cm_id); | |
2051 | c4iw_put_ep(&ep->com); | |
2052 | fail1: | |
2053 | out: | |
2054 | return err; | |
2055 | } | |
2056 | ||
2057 | int c4iw_destroy_listen(struct iw_cm_id *cm_id) | |
2058 | { | |
2059 | int err; | |
2060 | struct c4iw_listen_ep *ep = to_listen_ep(cm_id); | |
2061 | ||
2062 | PDBG("%s ep %p\n", __func__, ep); | |
2063 | ||
2064 | might_sleep(); | |
2065 | state_set(&ep->com, DEAD); | |
aadc4df3 | 2066 | c4iw_init_wr_wait(&ep->com.wr_wait); |
cfdda9d7 SW |
2067 | err = listen_stop(ep); |
2068 | if (err) | |
2069 | goto done; | |
aadc4df3 SW |
2070 | err = c4iw_wait_for_reply(&ep->com.dev->rdev, &ep->com.wr_wait, 0, 0, |
2071 | __func__); | |
cfdda9d7 SW |
2072 | cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid, PF_INET); |
2073 | done: | |
cfdda9d7 SW |
2074 | cm_id->rem_ref(cm_id); |
2075 | c4iw_put_ep(&ep->com); | |
2076 | return err; | |
2077 | } | |
2078 | ||
2079 | int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) | |
2080 | { | |
2081 | int ret = 0; | |
cfdda9d7 SW |
2082 | int close = 0; |
2083 | int fatal = 0; | |
2084 | struct c4iw_rdev *rdev; | |
cfdda9d7 | 2085 | |
2f5b48c3 | 2086 | mutex_lock(&ep->com.mutex); |
cfdda9d7 SW |
2087 | |
2088 | PDBG("%s ep %p state %s, abrupt %d\n", __func__, ep, | |
2089 | states[ep->com.state], abrupt); | |
2090 | ||
2091 | rdev = &ep->com.dev->rdev; | |
2092 | if (c4iw_fatal_error(rdev)) { | |
2093 | fatal = 1; | |
2094 | close_complete_upcall(ep); | |
2095 | ep->com.state = DEAD; | |
2096 | } | |
2097 | switch (ep->com.state) { | |
2098 | case MPA_REQ_WAIT: | |
2099 | case MPA_REQ_SENT: | |
2100 | case MPA_REQ_RCVD: | |
2101 | case MPA_REP_SENT: | |
2102 | case FPDU_MODE: | |
2103 | close = 1; | |
2104 | if (abrupt) | |
2105 | ep->com.state = ABORTING; | |
2106 | else { | |
2107 | ep->com.state = CLOSING; | |
ca5a2202 | 2108 | start_ep_timer(ep); |
cfdda9d7 SW |
2109 | } |
2110 | set_bit(CLOSE_SENT, &ep->com.flags); | |
2111 | break; | |
2112 | case CLOSING: | |
2113 | if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) { | |
2114 | close = 1; | |
2115 | if (abrupt) { | |
ca5a2202 | 2116 | stop_ep_timer(ep); |
cfdda9d7 SW |
2117 | ep->com.state = ABORTING; |
2118 | } else | |
2119 | ep->com.state = MORIBUND; | |
2120 | } | |
2121 | break; | |
2122 | case MORIBUND: | |
2123 | case ABORTING: | |
2124 | case DEAD: | |
2125 | PDBG("%s ignoring disconnect ep %p state %u\n", | |
2126 | __func__, ep, ep->com.state); | |
2127 | break; | |
2128 | default: | |
2129 | BUG(); | |
2130 | break; | |
2131 | } | |
2132 | ||
2f5b48c3 | 2133 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
2134 | if (close) { |
2135 | if (abrupt) | |
2136 | ret = abort_connection(ep, NULL, gfp); | |
2137 | else | |
2138 | ret = send_halfclose(ep, gfp); | |
2139 | if (ret) | |
2140 | fatal = 1; | |
2141 | } | |
2142 | if (fatal) | |
2143 | release_ep_resources(ep); | |
2144 | return ret; | |
2145 | } | |
2146 | ||
2f5b48c3 SW |
2147 | static int async_event(struct c4iw_dev *dev, struct sk_buff *skb) |
2148 | { | |
2149 | struct cpl_fw6_msg *rpl = cplhdr(skb); | |
2150 | c4iw_ev_dispatch(dev, (struct t4_cqe *)&rpl->data[0]); | |
2151 | return 0; | |
2152 | } | |
2153 | ||
be4c9bad RD |
2154 | /* |
2155 | * These are the real handlers that are called from a | |
2156 | * work queue. | |
2157 | */ | |
2158 | static c4iw_handler_func work_handlers[NUM_CPL_CMDS] = { | |
2159 | [CPL_ACT_ESTABLISH] = act_establish, | |
2160 | [CPL_ACT_OPEN_RPL] = act_open_rpl, | |
2161 | [CPL_RX_DATA] = rx_data, | |
2162 | [CPL_ABORT_RPL_RSS] = abort_rpl, | |
2163 | [CPL_ABORT_RPL] = abort_rpl, | |
2164 | [CPL_PASS_OPEN_RPL] = pass_open_rpl, | |
2165 | [CPL_CLOSE_LISTSRV_RPL] = close_listsrv_rpl, | |
2166 | [CPL_PASS_ACCEPT_REQ] = pass_accept_req, | |
2167 | [CPL_PASS_ESTABLISH] = pass_establish, | |
2168 | [CPL_PEER_CLOSE] = peer_close, | |
2169 | [CPL_ABORT_REQ_RSS] = peer_abort, | |
2170 | [CPL_CLOSE_CON_RPL] = close_con_rpl, | |
2171 | [CPL_RDMA_TERMINATE] = terminate, | |
2f5b48c3 SW |
2172 | [CPL_FW4_ACK] = fw4_ack, |
2173 | [CPL_FW6_MSG] = async_event | |
be4c9bad RD |
2174 | }; |
2175 | ||
2176 | static void process_timeout(struct c4iw_ep *ep) | |
2177 | { | |
2178 | struct c4iw_qp_attributes attrs; | |
2179 | int abort = 1; | |
2180 | ||
2f5b48c3 | 2181 | mutex_lock(&ep->com.mutex); |
be4c9bad RD |
2182 | PDBG("%s ep %p tid %u state %d\n", __func__, ep, ep->hwtid, |
2183 | ep->com.state); | |
2184 | switch (ep->com.state) { | |
2185 | case MPA_REQ_SENT: | |
2186 | __state_set(&ep->com, ABORTING); | |
2187 | connect_reply_upcall(ep, -ETIMEDOUT); | |
2188 | break; | |
2189 | case MPA_REQ_WAIT: | |
2190 | __state_set(&ep->com, ABORTING); | |
2191 | break; | |
2192 | case CLOSING: | |
2193 | case MORIBUND: | |
2194 | if (ep->com.cm_id && ep->com.qp) { | |
2195 | attrs.next_state = C4IW_QP_STATE_ERROR; | |
2196 | c4iw_modify_qp(ep->com.qp->rhp, | |
2197 | ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, | |
2198 | &attrs, 1); | |
2199 | } | |
2200 | __state_set(&ep->com, ABORTING); | |
2201 | break; | |
2202 | default: | |
2203 | printk(KERN_ERR "%s unexpected state ep %p tid %u state %u\n", | |
2204 | __func__, ep, ep->hwtid, ep->com.state); | |
2205 | WARN_ON(1); | |
2206 | abort = 0; | |
2207 | } | |
2f5b48c3 | 2208 | mutex_unlock(&ep->com.mutex); |
be4c9bad RD |
2209 | if (abort) |
2210 | abort_connection(ep, NULL, GFP_KERNEL); | |
2211 | c4iw_put_ep(&ep->com); | |
2212 | } | |
2213 | ||
2214 | static void process_timedout_eps(void) | |
2215 | { | |
2216 | struct c4iw_ep *ep; | |
2217 | ||
2218 | spin_lock_irq(&timeout_lock); | |
2219 | while (!list_empty(&timeout_list)) { | |
2220 | struct list_head *tmp; | |
2221 | ||
2222 | tmp = timeout_list.next; | |
2223 | list_del(tmp); | |
2224 | spin_unlock_irq(&timeout_lock); | |
2225 | ep = list_entry(tmp, struct c4iw_ep, entry); | |
2226 | process_timeout(ep); | |
2227 | spin_lock_irq(&timeout_lock); | |
2228 | } | |
2229 | spin_unlock_irq(&timeout_lock); | |
2230 | } | |
2231 | ||
2232 | static void process_work(struct work_struct *work) | |
2233 | { | |
2234 | struct sk_buff *skb = NULL; | |
2235 | struct c4iw_dev *dev; | |
c1d7356c | 2236 | struct cpl_act_establish *rpl; |
be4c9bad RD |
2237 | unsigned int opcode; |
2238 | int ret; | |
2239 | ||
2240 | while ((skb = skb_dequeue(&rxq))) { | |
2241 | rpl = cplhdr(skb); | |
2242 | dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *))); | |
2243 | opcode = rpl->ot.opcode; | |
2244 | ||
2245 | BUG_ON(!work_handlers[opcode]); | |
2246 | ret = work_handlers[opcode](dev, skb); | |
2247 | if (!ret) | |
2248 | kfree_skb(skb); | |
2249 | } | |
2250 | process_timedout_eps(); | |
2251 | } | |
2252 | ||
2253 | static DECLARE_WORK(skb_work, process_work); | |
2254 | ||
2255 | static void ep_timeout(unsigned long arg) | |
2256 | { | |
2257 | struct c4iw_ep *ep = (struct c4iw_ep *)arg; | |
2258 | ||
2259 | spin_lock(&timeout_lock); | |
2260 | list_add_tail(&ep->entry, &timeout_list); | |
2261 | spin_unlock(&timeout_lock); | |
2262 | queue_work(workq, &skb_work); | |
2263 | } | |
2264 | ||
cfdda9d7 SW |
2265 | /* |
2266 | * All the CM events are handled on a work queue to have a safe context. | |
2267 | */ | |
2268 | static int sched(struct c4iw_dev *dev, struct sk_buff *skb) | |
2269 | { | |
2270 | ||
2271 | /* | |
2272 | * Save dev in the skb->cb area. | |
2273 | */ | |
2274 | *((struct c4iw_dev **) (skb->cb + sizeof(void *))) = dev; | |
2275 | ||
2276 | /* | |
2277 | * Queue the skb and schedule the worker thread. | |
2278 | */ | |
2279 | skb_queue_tail(&rxq, skb); | |
2280 | queue_work(workq, &skb_work); | |
2281 | return 0; | |
2282 | } | |
2283 | ||
2284 | static int set_tcb_rpl(struct c4iw_dev *dev, struct sk_buff *skb) | |
2285 | { | |
2286 | struct cpl_set_tcb_rpl *rpl = cplhdr(skb); | |
2287 | ||
2288 | if (rpl->status != CPL_ERR_NONE) { | |
2289 | printk(KERN_ERR MOD "Unexpected SET_TCB_RPL status %u " | |
2290 | "for tid %u\n", rpl->status, GET_TID(rpl)); | |
2291 | } | |
2f5b48c3 | 2292 | kfree_skb(skb); |
cfdda9d7 SW |
2293 | return 0; |
2294 | } | |
2295 | ||
be4c9bad RD |
2296 | static int fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb) |
2297 | { | |
2298 | struct cpl_fw6_msg *rpl = cplhdr(skb); | |
2299 | struct c4iw_wr_wait *wr_waitp; | |
2300 | int ret; | |
2301 | ||
2302 | PDBG("%s type %u\n", __func__, rpl->type); | |
2303 | ||
2304 | switch (rpl->type) { | |
2305 | case 1: | |
2306 | ret = (int)((be64_to_cpu(rpl->data[0]) >> 8) & 0xff); | |
c8e081a1 | 2307 | wr_waitp = (struct c4iw_wr_wait *)(__force unsigned long) rpl->data[1]; |
be4c9bad RD |
2308 | PDBG("%s wr_waitp %p ret %u\n", __func__, wr_waitp, ret); |
2309 | if (wr_waitp) { | |
2f5b48c3 SW |
2310 | if (ret) |
2311 | wr_waitp->ret = -ret; | |
2312 | else | |
2313 | wr_waitp->ret = 0; | |
be4c9bad RD |
2314 | wr_waitp->done = 1; |
2315 | wake_up(&wr_waitp->wait); | |
2316 | } | |
2f5b48c3 | 2317 | kfree_skb(skb); |
be4c9bad RD |
2318 | break; |
2319 | case 2: | |
2f5b48c3 | 2320 | sched(dev, skb); |
be4c9bad RD |
2321 | break; |
2322 | default: | |
2323 | printk(KERN_ERR MOD "%s unexpected fw6 msg type %u\n", __func__, | |
2324 | rpl->type); | |
2f5b48c3 | 2325 | kfree_skb(skb); |
be4c9bad RD |
2326 | break; |
2327 | } | |
2328 | return 0; | |
2329 | } | |
2330 | ||
2331 | /* | |
2332 | * Most upcalls from the T4 Core go to sched() to | |
2333 | * schedule the processing on a work queue. | |
2334 | */ | |
2335 | c4iw_handler_func c4iw_handlers[NUM_CPL_CMDS] = { | |
2336 | [CPL_ACT_ESTABLISH] = sched, | |
2337 | [CPL_ACT_OPEN_RPL] = sched, | |
2338 | [CPL_RX_DATA] = sched, | |
2339 | [CPL_ABORT_RPL_RSS] = sched, | |
2340 | [CPL_ABORT_RPL] = sched, | |
2341 | [CPL_PASS_OPEN_RPL] = sched, | |
2342 | [CPL_CLOSE_LISTSRV_RPL] = sched, | |
2343 | [CPL_PASS_ACCEPT_REQ] = sched, | |
2344 | [CPL_PASS_ESTABLISH] = sched, | |
2345 | [CPL_PEER_CLOSE] = sched, | |
2346 | [CPL_CLOSE_CON_RPL] = sched, | |
2347 | [CPL_ABORT_REQ_RSS] = sched, | |
2348 | [CPL_RDMA_TERMINATE] = sched, | |
2349 | [CPL_FW4_ACK] = sched, | |
2350 | [CPL_SET_TCB_RPL] = set_tcb_rpl, | |
2351 | [CPL_FW6_MSG] = fw6_msg | |
2352 | }; | |
2353 | ||
cfdda9d7 SW |
2354 | int __init c4iw_cm_init(void) |
2355 | { | |
be4c9bad | 2356 | spin_lock_init(&timeout_lock); |
cfdda9d7 SW |
2357 | skb_queue_head_init(&rxq); |
2358 | ||
2359 | workq = create_singlethread_workqueue("iw_cxgb4"); | |
2360 | if (!workq) | |
2361 | return -ENOMEM; | |
2362 | ||
cfdda9d7 SW |
2363 | return 0; |
2364 | } | |
2365 | ||
2366 | void __exit c4iw_cm_term(void) | |
2367 | { | |
be4c9bad | 2368 | WARN_ON(!list_empty(&timeout_list)); |
cfdda9d7 SW |
2369 | flush_workqueue(workq); |
2370 | destroy_workqueue(workq); | |
2371 | } |