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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 | ||
101 | static int peer2peer; | |
102 | module_param(peer2peer, int, 0644); | |
103 | MODULE_PARM_DESC(peer2peer, "Support peer2peer ULPs (default=0)"); | |
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 | ||
176 | static void stop_ep_timer(struct c4iw_ep *ep) | |
177 | { | |
1ec779cc | 178 | PDBG("%s ep %p stopping\n", __func__, ep); |
cfdda9d7 | 179 | del_timer_sync(&ep->timer); |
1ec779cc VP |
180 | if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) |
181 | c4iw_put_ep(&ep->com); | |
cfdda9d7 SW |
182 | } |
183 | ||
184 | static int c4iw_l2t_send(struct c4iw_rdev *rdev, struct sk_buff *skb, | |
185 | struct l2t_entry *l2e) | |
186 | { | |
187 | int error = 0; | |
188 | ||
189 | if (c4iw_fatal_error(rdev)) { | |
190 | kfree_skb(skb); | |
191 | PDBG("%s - device in error state - dropping\n", __func__); | |
192 | return -EIO; | |
193 | } | |
194 | error = cxgb4_l2t_send(rdev->lldi.ports[0], skb, l2e); | |
195 | if (error < 0) | |
196 | kfree_skb(skb); | |
74594861 | 197 | return error < 0 ? error : 0; |
cfdda9d7 SW |
198 | } |
199 | ||
200 | int c4iw_ofld_send(struct c4iw_rdev *rdev, struct sk_buff *skb) | |
201 | { | |
202 | int error = 0; | |
203 | ||
204 | if (c4iw_fatal_error(rdev)) { | |
205 | kfree_skb(skb); | |
206 | PDBG("%s - device in error state - dropping\n", __func__); | |
207 | return -EIO; | |
208 | } | |
209 | error = cxgb4_ofld_send(rdev->lldi.ports[0], skb); | |
210 | if (error < 0) | |
211 | kfree_skb(skb); | |
74594861 | 212 | return error < 0 ? error : 0; |
cfdda9d7 SW |
213 | } |
214 | ||
215 | static void release_tid(struct c4iw_rdev *rdev, u32 hwtid, struct sk_buff *skb) | |
216 | { | |
217 | struct cpl_tid_release *req; | |
218 | ||
219 | skb = get_skb(skb, sizeof *req, GFP_KERNEL); | |
220 | if (!skb) | |
221 | return; | |
222 | req = (struct cpl_tid_release *) skb_put(skb, sizeof(*req)); | |
223 | INIT_TP_WR(req, hwtid); | |
224 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_TID_RELEASE, hwtid)); | |
225 | set_wr_txq(skb, CPL_PRIORITY_SETUP, 0); | |
226 | c4iw_ofld_send(rdev, skb); | |
227 | return; | |
228 | } | |
229 | ||
230 | static void set_emss(struct c4iw_ep *ep, u16 opt) | |
231 | { | |
232 | ep->emss = ep->com.dev->rdev.lldi.mtus[GET_TCPOPT_MSS(opt)] - 40; | |
233 | ep->mss = ep->emss; | |
234 | if (GET_TCPOPT_TSTAMP(opt)) | |
235 | ep->emss -= 12; | |
236 | if (ep->emss < 128) | |
237 | ep->emss = 128; | |
238 | PDBG("%s mss_idx %u mss %u emss=%u\n", __func__, GET_TCPOPT_MSS(opt), | |
239 | ep->mss, ep->emss); | |
240 | } | |
241 | ||
242 | static enum c4iw_ep_state state_read(struct c4iw_ep_common *epc) | |
243 | { | |
cfdda9d7 SW |
244 | enum c4iw_ep_state state; |
245 | ||
2f5b48c3 | 246 | mutex_lock(&epc->mutex); |
cfdda9d7 | 247 | state = epc->state; |
2f5b48c3 | 248 | mutex_unlock(&epc->mutex); |
cfdda9d7 SW |
249 | return state; |
250 | } | |
251 | ||
252 | static void __state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new) | |
253 | { | |
254 | epc->state = new; | |
255 | } | |
256 | ||
257 | static void state_set(struct c4iw_ep_common *epc, enum c4iw_ep_state new) | |
258 | { | |
2f5b48c3 | 259 | mutex_lock(&epc->mutex); |
cfdda9d7 SW |
260 | PDBG("%s - %s -> %s\n", __func__, states[epc->state], states[new]); |
261 | __state_set(epc, new); | |
2f5b48c3 | 262 | mutex_unlock(&epc->mutex); |
cfdda9d7 SW |
263 | return; |
264 | } | |
265 | ||
266 | static void *alloc_ep(int size, gfp_t gfp) | |
267 | { | |
268 | struct c4iw_ep_common *epc; | |
269 | ||
270 | epc = kzalloc(size, gfp); | |
271 | if (epc) { | |
272 | kref_init(&epc->kref); | |
2f5b48c3 | 273 | mutex_init(&epc->mutex); |
aadc4df3 | 274 | c4iw_init_wr_wait(&epc->wr_wait); |
cfdda9d7 SW |
275 | } |
276 | PDBG("%s alloc ep %p\n", __func__, epc); | |
277 | return epc; | |
278 | } | |
279 | ||
280 | void _c4iw_free_ep(struct kref *kref) | |
281 | { | |
282 | struct c4iw_ep *ep; | |
283 | ||
284 | ep = container_of(kref, struct c4iw_ep, com.kref); | |
285 | PDBG("%s ep %p state %s\n", __func__, ep, states[state_read(&ep->com)]); | |
325abead VP |
286 | if (test_bit(QP_REFERENCED, &ep->com.flags)) |
287 | deref_qp(ep); | |
cfdda9d7 | 288 | if (test_bit(RELEASE_RESOURCES, &ep->com.flags)) { |
fe7e0a4d | 289 | remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid); |
cfdda9d7 SW |
290 | cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid); |
291 | dst_release(ep->dst); | |
292 | cxgb4_l2t_release(ep->l2t); | |
293 | } | |
294 | kfree(ep); | |
295 | } | |
296 | ||
297 | static void release_ep_resources(struct c4iw_ep *ep) | |
298 | { | |
299 | set_bit(RELEASE_RESOURCES, &ep->com.flags); | |
300 | c4iw_put_ep(&ep->com); | |
301 | } | |
302 | ||
cfdda9d7 SW |
303 | static int status2errno(int status) |
304 | { | |
305 | switch (status) { | |
306 | case CPL_ERR_NONE: | |
307 | return 0; | |
308 | case CPL_ERR_CONN_RESET: | |
309 | return -ECONNRESET; | |
310 | case CPL_ERR_ARP_MISS: | |
311 | return -EHOSTUNREACH; | |
312 | case CPL_ERR_CONN_TIMEDOUT: | |
313 | return -ETIMEDOUT; | |
314 | case CPL_ERR_TCAM_FULL: | |
315 | return -ENOMEM; | |
316 | case CPL_ERR_CONN_EXIST: | |
317 | return -EADDRINUSE; | |
318 | default: | |
319 | return -EIO; | |
320 | } | |
321 | } | |
322 | ||
323 | /* | |
324 | * Try and reuse skbs already allocated... | |
325 | */ | |
326 | static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp) | |
327 | { | |
328 | if (skb && !skb_is_nonlinear(skb) && !skb_cloned(skb)) { | |
329 | skb_trim(skb, 0); | |
330 | skb_get(skb); | |
331 | skb_reset_transport_header(skb); | |
332 | } else { | |
333 | skb = alloc_skb(len, gfp); | |
334 | } | |
335 | return skb; | |
336 | } | |
337 | ||
830662f6 VP |
338 | static struct net_device *get_real_dev(struct net_device *egress_dev) |
339 | { | |
340 | struct net_device *phys_dev = egress_dev; | |
341 | if (egress_dev->priv_flags & IFF_802_1Q_VLAN) | |
342 | phys_dev = vlan_dev_real_dev(egress_dev); | |
343 | return phys_dev; | |
344 | } | |
345 | ||
346 | static int our_interface(struct c4iw_dev *dev, struct net_device *egress_dev) | |
347 | { | |
348 | int i; | |
349 | ||
350 | egress_dev = get_real_dev(egress_dev); | |
351 | for (i = 0; i < dev->rdev.lldi.nports; i++) | |
352 | if (dev->rdev.lldi.ports[i] == egress_dev) | |
353 | return 1; | |
354 | return 0; | |
355 | } | |
356 | ||
357 | static struct dst_entry *find_route6(struct c4iw_dev *dev, __u8 *local_ip, | |
358 | __u8 *peer_ip, __be16 local_port, | |
359 | __be16 peer_port, u8 tos, | |
360 | __u32 sin6_scope_id) | |
361 | { | |
362 | struct dst_entry *dst = NULL; | |
363 | ||
364 | if (IS_ENABLED(CONFIG_IPV6)) { | |
365 | struct flowi6 fl6; | |
366 | ||
367 | memset(&fl6, 0, sizeof(fl6)); | |
368 | memcpy(&fl6.daddr, peer_ip, 16); | |
369 | memcpy(&fl6.saddr, local_ip, 16); | |
370 | if (ipv6_addr_type(&fl6.daddr) & IPV6_ADDR_LINKLOCAL) | |
371 | fl6.flowi6_oif = sin6_scope_id; | |
372 | dst = ip6_route_output(&init_net, NULL, &fl6); | |
373 | if (!dst) | |
374 | goto out; | |
375 | if (!our_interface(dev, ip6_dst_idev(dst)->dev) && | |
376 | !(ip6_dst_idev(dst)->dev->flags & IFF_LOOPBACK)) { | |
377 | dst_release(dst); | |
378 | dst = NULL; | |
379 | } | |
380 | } | |
381 | ||
382 | out: | |
383 | return dst; | |
384 | } | |
385 | ||
386 | static struct dst_entry *find_route(struct c4iw_dev *dev, __be32 local_ip, | |
cfdda9d7 SW |
387 | __be32 peer_ip, __be16 local_port, |
388 | __be16 peer_port, u8 tos) | |
389 | { | |
390 | struct rtable *rt; | |
31e4543d | 391 | struct flowi4 fl4; |
830662f6 | 392 | struct neighbour *n; |
78fbfd8a | 393 | |
31e4543d | 394 | rt = ip_route_output_ports(&init_net, &fl4, NULL, peer_ip, local_ip, |
78fbfd8a DM |
395 | peer_port, local_port, IPPROTO_TCP, |
396 | tos, 0); | |
b23dd4fe | 397 | if (IS_ERR(rt)) |
cfdda9d7 | 398 | return NULL; |
830662f6 VP |
399 | n = dst_neigh_lookup(&rt->dst, &peer_ip); |
400 | if (!n) | |
401 | return NULL; | |
402 | if (!our_interface(dev, n->dev)) { | |
403 | dst_release(&rt->dst); | |
404 | return NULL; | |
405 | } | |
406 | neigh_release(n); | |
407 | return &rt->dst; | |
cfdda9d7 SW |
408 | } |
409 | ||
410 | static void arp_failure_discard(void *handle, struct sk_buff *skb) | |
411 | { | |
412 | PDBG("%s c4iw_dev %p\n", __func__, handle); | |
413 | kfree_skb(skb); | |
414 | } | |
415 | ||
416 | /* | |
417 | * Handle an ARP failure for an active open. | |
418 | */ | |
419 | static void act_open_req_arp_failure(void *handle, struct sk_buff *skb) | |
420 | { | |
421 | printk(KERN_ERR MOD "ARP failure duing connect\n"); | |
422 | kfree_skb(skb); | |
423 | } | |
424 | ||
425 | /* | |
426 | * Handle an ARP failure for a CPL_ABORT_REQ. Change it into a no RST variant | |
427 | * and send it along. | |
428 | */ | |
429 | static void abort_arp_failure(void *handle, struct sk_buff *skb) | |
430 | { | |
431 | struct c4iw_rdev *rdev = handle; | |
432 | struct cpl_abort_req *req = cplhdr(skb); | |
433 | ||
434 | PDBG("%s rdev %p\n", __func__, rdev); | |
435 | req->cmd = CPL_ABORT_NO_RST; | |
436 | c4iw_ofld_send(rdev, skb); | |
437 | } | |
438 | ||
439 | static void send_flowc(struct c4iw_ep *ep, struct sk_buff *skb) | |
440 | { | |
441 | unsigned int flowclen = 80; | |
442 | struct fw_flowc_wr *flowc; | |
443 | int i; | |
444 | ||
445 | skb = get_skb(skb, flowclen, GFP_KERNEL); | |
446 | flowc = (struct fw_flowc_wr *)__skb_put(skb, flowclen); | |
447 | ||
448 | flowc->op_to_nparams = cpu_to_be32(FW_WR_OP(FW_FLOWC_WR) | | |
449 | FW_FLOWC_WR_NPARAMS(8)); | |
450 | flowc->flowid_len16 = cpu_to_be32(FW_WR_LEN16(DIV_ROUND_UP(flowclen, | |
451 | 16)) | FW_WR_FLOWID(ep->hwtid)); | |
452 | ||
453 | flowc->mnemval[0].mnemonic = FW_FLOWC_MNEM_PFNVFN; | |
94788657 | 454 | flowc->mnemval[0].val = cpu_to_be32(PCI_FUNC(ep->com.dev->rdev.lldi.pdev->devfn) << 8); |
cfdda9d7 SW |
455 | flowc->mnemval[1].mnemonic = FW_FLOWC_MNEM_CH; |
456 | flowc->mnemval[1].val = cpu_to_be32(ep->tx_chan); | |
457 | flowc->mnemval[2].mnemonic = FW_FLOWC_MNEM_PORT; | |
458 | flowc->mnemval[2].val = cpu_to_be32(ep->tx_chan); | |
459 | flowc->mnemval[3].mnemonic = FW_FLOWC_MNEM_IQID; | |
460 | flowc->mnemval[3].val = cpu_to_be32(ep->rss_qid); | |
461 | flowc->mnemval[4].mnemonic = FW_FLOWC_MNEM_SNDNXT; | |
462 | flowc->mnemval[4].val = cpu_to_be32(ep->snd_seq); | |
463 | flowc->mnemval[5].mnemonic = FW_FLOWC_MNEM_RCVNXT; | |
464 | flowc->mnemval[5].val = cpu_to_be32(ep->rcv_seq); | |
465 | flowc->mnemval[6].mnemonic = FW_FLOWC_MNEM_SNDBUF; | |
466 | flowc->mnemval[6].val = cpu_to_be32(snd_win); | |
467 | flowc->mnemval[7].mnemonic = FW_FLOWC_MNEM_MSS; | |
468 | flowc->mnemval[7].val = cpu_to_be32(ep->emss); | |
469 | /* Pad WR to 16 byte boundary */ | |
470 | flowc->mnemval[8].mnemonic = 0; | |
471 | flowc->mnemval[8].val = 0; | |
472 | for (i = 0; i < 9; i++) { | |
473 | flowc->mnemval[i].r4[0] = 0; | |
474 | flowc->mnemval[i].r4[1] = 0; | |
475 | flowc->mnemval[i].r4[2] = 0; | |
476 | } | |
477 | ||
478 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
479 | c4iw_ofld_send(&ep->com.dev->rdev, skb); | |
480 | } | |
481 | ||
482 | static int send_halfclose(struct c4iw_ep *ep, gfp_t gfp) | |
483 | { | |
484 | struct cpl_close_con_req *req; | |
485 | struct sk_buff *skb; | |
486 | int wrlen = roundup(sizeof *req, 16); | |
487 | ||
488 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
489 | skb = get_skb(NULL, wrlen, gfp); | |
490 | if (!skb) { | |
491 | printk(KERN_ERR MOD "%s - failed to alloc skb\n", __func__); | |
492 | return -ENOMEM; | |
493 | } | |
494 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
495 | t4_set_arp_err_handler(skb, NULL, arp_failure_discard); | |
496 | req = (struct cpl_close_con_req *) skb_put(skb, wrlen); | |
497 | memset(req, 0, wrlen); | |
498 | INIT_TP_WR(req, ep->hwtid); | |
499 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, | |
500 | ep->hwtid)); | |
501 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); | |
502 | } | |
503 | ||
504 | static int send_abort(struct c4iw_ep *ep, struct sk_buff *skb, gfp_t gfp) | |
505 | { | |
506 | struct cpl_abort_req *req; | |
507 | int wrlen = roundup(sizeof *req, 16); | |
508 | ||
509 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
510 | skb = get_skb(skb, wrlen, gfp); | |
511 | if (!skb) { | |
512 | printk(KERN_ERR MOD "%s - failed to alloc skb.\n", | |
513 | __func__); | |
514 | return -ENOMEM; | |
515 | } | |
516 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
517 | t4_set_arp_err_handler(skb, &ep->com.dev->rdev, abort_arp_failure); | |
518 | req = (struct cpl_abort_req *) skb_put(skb, wrlen); | |
519 | memset(req, 0, wrlen); | |
520 | INIT_TP_WR(req, ep->hwtid); | |
521 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_REQ, ep->hwtid)); | |
522 | req->cmd = CPL_ABORT_SEND_RST; | |
523 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); | |
524 | } | |
525 | ||
5be78ee9 VP |
526 | #define VLAN_NONE 0xfff |
527 | #define FILTER_SEL_VLAN_NONE 0xffff | |
528 | #define FILTER_SEL_WIDTH_P_FC (3+1) /* port uses 3 bits, FCoE one bit */ | |
529 | #define FILTER_SEL_WIDTH_VIN_P_FC \ | |
530 | (6 + 7 + FILTER_SEL_WIDTH_P_FC) /* 6 bits are unused, VF uses 7 bits*/ | |
531 | #define FILTER_SEL_WIDTH_TAG_P_FC \ | |
532 | (3 + FILTER_SEL_WIDTH_VIN_P_FC) /* PF uses 3 bits */ | |
533 | #define FILTER_SEL_WIDTH_VLD_TAG_P_FC (1 + FILTER_SEL_WIDTH_TAG_P_FC) | |
534 | ||
535 | static unsigned int select_ntuple(struct c4iw_dev *dev, struct dst_entry *dst, | |
536 | struct l2t_entry *l2t) | |
537 | { | |
538 | unsigned int ntuple = 0; | |
539 | u32 viid; | |
540 | ||
541 | switch (dev->rdev.lldi.filt_mode) { | |
542 | ||
543 | /* default filter mode */ | |
544 | case HW_TPL_FR_MT_PR_IV_P_FC: | |
545 | if (l2t->vlan == VLAN_NONE) | |
546 | ntuple |= FILTER_SEL_VLAN_NONE << FILTER_SEL_WIDTH_P_FC; | |
547 | else { | |
548 | ntuple |= l2t->vlan << FILTER_SEL_WIDTH_P_FC; | |
68074bb1 | 549 | ntuple |= 1 << FILTER_SEL_WIDTH_TAG_P_FC; |
5be78ee9 VP |
550 | } |
551 | ntuple |= l2t->lport << S_PORT | IPPROTO_TCP << | |
552 | FILTER_SEL_WIDTH_VLD_TAG_P_FC; | |
553 | break; | |
554 | case HW_TPL_FR_MT_PR_OV_P_FC: { | |
555 | viid = cxgb4_port_viid(l2t->neigh->dev); | |
556 | ||
557 | ntuple |= FW_VIID_VIN_GET(viid) << FILTER_SEL_WIDTH_P_FC; | |
558 | ntuple |= FW_VIID_PFN_GET(viid) << FILTER_SEL_WIDTH_VIN_P_FC; | |
559 | ntuple |= FW_VIID_VIVLD_GET(viid) << FILTER_SEL_WIDTH_TAG_P_FC; | |
560 | ntuple |= l2t->lport << S_PORT | IPPROTO_TCP << | |
561 | FILTER_SEL_WIDTH_VLD_TAG_P_FC; | |
562 | break; | |
563 | } | |
564 | default: | |
565 | break; | |
566 | } | |
567 | return ntuple; | |
568 | } | |
569 | ||
cfdda9d7 SW |
570 | static int send_connect(struct c4iw_ep *ep) |
571 | { | |
572 | struct cpl_act_open_req *req; | |
f079af7a | 573 | struct cpl_t5_act_open_req *t5_req; |
830662f6 VP |
574 | struct cpl_act_open_req6 *req6; |
575 | struct cpl_t5_act_open_req6 *t5_req6; | |
cfdda9d7 SW |
576 | struct sk_buff *skb; |
577 | u64 opt0; | |
578 | u32 opt2; | |
579 | unsigned int mtu_idx; | |
580 | int wscale; | |
830662f6 VP |
581 | int wrlen; |
582 | int sizev4 = is_t4(ep->com.dev->rdev.lldi.adapter_type) ? | |
583 | sizeof(struct cpl_act_open_req) : | |
584 | sizeof(struct cpl_t5_act_open_req); | |
585 | int sizev6 = is_t4(ep->com.dev->rdev.lldi.adapter_type) ? | |
586 | sizeof(struct cpl_act_open_req6) : | |
587 | sizeof(struct cpl_t5_act_open_req6); | |
588 | struct sockaddr_in *la = (struct sockaddr_in *)&ep->com.local_addr; | |
589 | struct sockaddr_in *ra = (struct sockaddr_in *)&ep->com.remote_addr; | |
590 | struct sockaddr_in6 *la6 = (struct sockaddr_in6 *)&ep->com.local_addr; | |
591 | struct sockaddr_in6 *ra6 = (struct sockaddr_in6 *)&ep->com.remote_addr; | |
592 | ||
593 | wrlen = (ep->com.remote_addr.ss_family == AF_INET) ? | |
594 | roundup(sizev4, 16) : | |
595 | roundup(sizev6, 16); | |
cfdda9d7 SW |
596 | |
597 | PDBG("%s ep %p atid %u\n", __func__, ep, ep->atid); | |
598 | ||
599 | skb = get_skb(NULL, wrlen, GFP_KERNEL); | |
600 | if (!skb) { | |
601 | printk(KERN_ERR MOD "%s - failed to alloc skb.\n", | |
602 | __func__); | |
603 | return -ENOMEM; | |
604 | } | |
d4f1a5c6 | 605 | set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx); |
cfdda9d7 SW |
606 | |
607 | cxgb4_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx); | |
608 | wscale = compute_wscale(rcv_win); | |
5be78ee9 VP |
609 | opt0 = (nocong ? NO_CONG(1) : 0) | |
610 | KEEP_ALIVE(1) | | |
ba6d3925 | 611 | DELACK(1) | |
cfdda9d7 SW |
612 | WND_SCALE(wscale) | |
613 | MSS_IDX(mtu_idx) | | |
614 | L2T_IDX(ep->l2t->idx) | | |
615 | TX_CHAN(ep->tx_chan) | | |
616 | SMAC_SEL(ep->smac_idx) | | |
617 | DSCP(ep->tos) | | |
b48f3b9c | 618 | ULP_MODE(ULP_MODE_TCPDDP) | |
cfdda9d7 SW |
619 | RCV_BUFSIZ(rcv_win>>10); |
620 | opt2 = RX_CHANNEL(0) | | |
5be78ee9 | 621 | CCTRL_ECN(enable_ecn) | |
cfdda9d7 SW |
622 | RSS_QUEUE_VALID | RSS_QUEUE(ep->rss_qid); |
623 | if (enable_tcp_timestamps) | |
624 | opt2 |= TSTAMPS_EN(1); | |
625 | if (enable_tcp_sack) | |
626 | opt2 |= SACK_EN(1); | |
627 | if (wscale && enable_tcp_window_scaling) | |
628 | opt2 |= WND_SCALE_EN(1); | |
629 | t4_set_arp_err_handler(skb, NULL, act_open_req_arp_failure); | |
630 | ||
f079af7a | 631 | if (is_t4(ep->com.dev->rdev.lldi.adapter_type)) { |
830662f6 VP |
632 | if (ep->com.remote_addr.ss_family == AF_INET) { |
633 | req = (struct cpl_act_open_req *) skb_put(skb, wrlen); | |
634 | INIT_TP_WR(req, 0); | |
635 | OPCODE_TID(req) = cpu_to_be32( | |
636 | MK_OPCODE_TID(CPL_ACT_OPEN_REQ, | |
637 | ((ep->rss_qid << 14) | ep->atid))); | |
638 | req->local_port = la->sin_port; | |
639 | req->peer_port = ra->sin_port; | |
640 | req->local_ip = la->sin_addr.s_addr; | |
641 | req->peer_ip = ra->sin_addr.s_addr; | |
642 | req->opt0 = cpu_to_be64(opt0); | |
643 | req->params = cpu_to_be32(select_ntuple(ep->com.dev, | |
644 | ep->dst, ep->l2t)); | |
645 | req->opt2 = cpu_to_be32(opt2); | |
646 | } else { | |
647 | req6 = (struct cpl_act_open_req6 *)skb_put(skb, wrlen); | |
648 | ||
649 | INIT_TP_WR(req6, 0); | |
650 | OPCODE_TID(req6) = cpu_to_be32( | |
651 | MK_OPCODE_TID(CPL_ACT_OPEN_REQ6, | |
652 | ((ep->rss_qid<<14)|ep->atid))); | |
653 | req6->local_port = la6->sin6_port; | |
654 | req6->peer_port = ra6->sin6_port; | |
655 | req6->local_ip_hi = *((__be64 *) | |
656 | (la6->sin6_addr.s6_addr)); | |
657 | req6->local_ip_lo = *((__be64 *) | |
658 | (la6->sin6_addr.s6_addr + 8)); | |
659 | req6->peer_ip_hi = *((__be64 *) | |
660 | (ra6->sin6_addr.s6_addr)); | |
661 | req6->peer_ip_lo = *((__be64 *) | |
662 | (ra6->sin6_addr.s6_addr + 8)); | |
663 | req6->opt0 = cpu_to_be64(opt0); | |
664 | req6->params = cpu_to_be32( | |
665 | select_ntuple(ep->com.dev, ep->dst, | |
666 | ep->l2t)); | |
667 | req6->opt2 = cpu_to_be32(opt2); | |
668 | } | |
f079af7a | 669 | } else { |
830662f6 VP |
670 | if (ep->com.remote_addr.ss_family == AF_INET) { |
671 | t5_req = (struct cpl_t5_act_open_req *) | |
672 | skb_put(skb, wrlen); | |
673 | INIT_TP_WR(t5_req, 0); | |
674 | OPCODE_TID(t5_req) = cpu_to_be32( | |
f079af7a VP |
675 | MK_OPCODE_TID(CPL_ACT_OPEN_REQ, |
676 | ((ep->rss_qid << 14) | ep->atid))); | |
830662f6 VP |
677 | t5_req->local_port = la->sin_port; |
678 | t5_req->peer_port = ra->sin_port; | |
679 | t5_req->local_ip = la->sin_addr.s_addr; | |
680 | t5_req->peer_ip = ra->sin_addr.s_addr; | |
681 | t5_req->opt0 = cpu_to_be64(opt0); | |
682 | t5_req->params = cpu_to_be64(V_FILTER_TUPLE( | |
683 | select_ntuple(ep->com.dev, | |
684 | ep->dst, ep->l2t))); | |
685 | t5_req->opt2 = cpu_to_be32(opt2); | |
686 | } else { | |
687 | t5_req6 = (struct cpl_t5_act_open_req6 *) | |
688 | skb_put(skb, wrlen); | |
689 | INIT_TP_WR(t5_req6, 0); | |
690 | OPCODE_TID(t5_req6) = cpu_to_be32( | |
691 | MK_OPCODE_TID(CPL_ACT_OPEN_REQ6, | |
692 | ((ep->rss_qid<<14)|ep->atid))); | |
693 | t5_req6->local_port = la6->sin6_port; | |
694 | t5_req6->peer_port = ra6->sin6_port; | |
695 | t5_req6->local_ip_hi = *((__be64 *) | |
696 | (la6->sin6_addr.s6_addr)); | |
697 | t5_req6->local_ip_lo = *((__be64 *) | |
698 | (la6->sin6_addr.s6_addr + 8)); | |
699 | t5_req6->peer_ip_hi = *((__be64 *) | |
700 | (ra6->sin6_addr.s6_addr)); | |
701 | t5_req6->peer_ip_lo = *((__be64 *) | |
702 | (ra6->sin6_addr.s6_addr + 8)); | |
703 | t5_req6->opt0 = cpu_to_be64(opt0); | |
704 | t5_req6->params = (__force __be64)cpu_to_be32( | |
705 | select_ntuple(ep->com.dev, ep->dst, ep->l2t)); | |
706 | t5_req6->opt2 = cpu_to_be32(opt2); | |
707 | } | |
f079af7a VP |
708 | } |
709 | ||
793dad94 | 710 | set_bit(ACT_OPEN_REQ, &ep->com.history); |
cfdda9d7 SW |
711 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
712 | } | |
713 | ||
d2fe99e8 KS |
714 | static void send_mpa_req(struct c4iw_ep *ep, struct sk_buff *skb, |
715 | u8 mpa_rev_to_use) | |
cfdda9d7 SW |
716 | { |
717 | int mpalen, wrlen; | |
718 | struct fw_ofld_tx_data_wr *req; | |
719 | struct mpa_message *mpa; | |
d2fe99e8 | 720 | struct mpa_v2_conn_params mpa_v2_params; |
cfdda9d7 SW |
721 | |
722 | PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); | |
723 | ||
724 | BUG_ON(skb_cloned(skb)); | |
725 | ||
726 | mpalen = sizeof(*mpa) + ep->plen; | |
d2fe99e8 KS |
727 | if (mpa_rev_to_use == 2) |
728 | mpalen += sizeof(struct mpa_v2_conn_params); | |
cfdda9d7 SW |
729 | wrlen = roundup(mpalen + sizeof *req, 16); |
730 | skb = get_skb(skb, wrlen, GFP_KERNEL); | |
731 | if (!skb) { | |
732 | connect_reply_upcall(ep, -ENOMEM); | |
733 | return; | |
734 | } | |
735 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
736 | ||
737 | req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen); | |
738 | memset(req, 0, wrlen); | |
739 | req->op_to_immdlen = cpu_to_be32( | |
740 | FW_WR_OP(FW_OFLD_TX_DATA_WR) | | |
741 | FW_WR_COMPL(1) | | |
742 | FW_WR_IMMDLEN(mpalen)); | |
743 | req->flowid_len16 = cpu_to_be32( | |
744 | FW_WR_FLOWID(ep->hwtid) | | |
745 | FW_WR_LEN16(wrlen >> 4)); | |
746 | req->plen = cpu_to_be32(mpalen); | |
747 | req->tunnel_to_proxy = cpu_to_be32( | |
748 | FW_OFLD_TX_DATA_WR_FLUSH(1) | | |
749 | FW_OFLD_TX_DATA_WR_SHOVE(1)); | |
750 | ||
751 | mpa = (struct mpa_message *)(req + 1); | |
752 | memcpy(mpa->key, MPA_KEY_REQ, sizeof(mpa->key)); | |
753 | mpa->flags = (crc_enabled ? MPA_CRC : 0) | | |
d2fe99e8 KS |
754 | (markers_enabled ? MPA_MARKERS : 0) | |
755 | (mpa_rev_to_use == 2 ? MPA_ENHANCED_RDMA_CONN : 0); | |
cfdda9d7 | 756 | mpa->private_data_size = htons(ep->plen); |
d2fe99e8 | 757 | mpa->revision = mpa_rev_to_use; |
01b225e1 | 758 | if (mpa_rev_to_use == 1) { |
d2fe99e8 | 759 | ep->tried_with_mpa_v1 = 1; |
01b225e1 KS |
760 | ep->retry_with_mpa_v1 = 0; |
761 | } | |
d2fe99e8 KS |
762 | |
763 | if (mpa_rev_to_use == 2) { | |
f747c34a RD |
764 | mpa->private_data_size = htons(ntohs(mpa->private_data_size) + |
765 | sizeof (struct mpa_v2_conn_params)); | |
d2fe99e8 KS |
766 | mpa_v2_params.ird = htons((u16)ep->ird); |
767 | mpa_v2_params.ord = htons((u16)ep->ord); | |
768 | ||
769 | if (peer2peer) { | |
770 | mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); | |
771 | if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) | |
772 | mpa_v2_params.ord |= | |
773 | htons(MPA_V2_RDMA_WRITE_RTR); | |
774 | else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) | |
775 | mpa_v2_params.ord |= | |
776 | htons(MPA_V2_RDMA_READ_RTR); | |
777 | } | |
778 | memcpy(mpa->private_data, &mpa_v2_params, | |
779 | sizeof(struct mpa_v2_conn_params)); | |
cfdda9d7 | 780 | |
d2fe99e8 KS |
781 | if (ep->plen) |
782 | memcpy(mpa->private_data + | |
783 | sizeof(struct mpa_v2_conn_params), | |
784 | ep->mpa_pkt + sizeof(*mpa), ep->plen); | |
785 | } else | |
786 | if (ep->plen) | |
787 | memcpy(mpa->private_data, | |
788 | ep->mpa_pkt + sizeof(*mpa), ep->plen); | |
cfdda9d7 SW |
789 | |
790 | /* | |
791 | * Reference the mpa skb. This ensures the data area | |
792 | * will remain in memory until the hw acks the tx. | |
793 | * Function fw4_ack() will deref it. | |
794 | */ | |
795 | skb_get(skb); | |
796 | t4_set_arp_err_handler(skb, NULL, arp_failure_discard); | |
797 | BUG_ON(ep->mpa_skb); | |
798 | ep->mpa_skb = skb; | |
799 | c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); | |
800 | start_ep_timer(ep); | |
801 | state_set(&ep->com, MPA_REQ_SENT); | |
802 | ep->mpa_attr.initiator = 1; | |
803 | return; | |
804 | } | |
805 | ||
806 | static int send_mpa_reject(struct c4iw_ep *ep, const void *pdata, u8 plen) | |
807 | { | |
808 | int mpalen, wrlen; | |
809 | struct fw_ofld_tx_data_wr *req; | |
810 | struct mpa_message *mpa; | |
811 | struct sk_buff *skb; | |
d2fe99e8 | 812 | struct mpa_v2_conn_params mpa_v2_params; |
cfdda9d7 SW |
813 | |
814 | PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); | |
815 | ||
816 | mpalen = sizeof(*mpa) + plen; | |
d2fe99e8 KS |
817 | if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) |
818 | mpalen += sizeof(struct mpa_v2_conn_params); | |
cfdda9d7 SW |
819 | wrlen = roundup(mpalen + sizeof *req, 16); |
820 | ||
821 | skb = get_skb(NULL, wrlen, GFP_KERNEL); | |
822 | if (!skb) { | |
823 | printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__); | |
824 | return -ENOMEM; | |
825 | } | |
826 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
827 | ||
828 | req = (struct fw_ofld_tx_data_wr *)skb_put(skb, wrlen); | |
829 | memset(req, 0, wrlen); | |
830 | req->op_to_immdlen = cpu_to_be32( | |
831 | FW_WR_OP(FW_OFLD_TX_DATA_WR) | | |
832 | FW_WR_COMPL(1) | | |
833 | FW_WR_IMMDLEN(mpalen)); | |
834 | req->flowid_len16 = cpu_to_be32( | |
835 | FW_WR_FLOWID(ep->hwtid) | | |
836 | FW_WR_LEN16(wrlen >> 4)); | |
837 | req->plen = cpu_to_be32(mpalen); | |
838 | req->tunnel_to_proxy = cpu_to_be32( | |
839 | FW_OFLD_TX_DATA_WR_FLUSH(1) | | |
840 | FW_OFLD_TX_DATA_WR_SHOVE(1)); | |
841 | ||
842 | mpa = (struct mpa_message *)(req + 1); | |
843 | memset(mpa, 0, sizeof(*mpa)); | |
844 | memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); | |
845 | mpa->flags = MPA_REJECT; | |
fe7e0a4d | 846 | mpa->revision = ep->mpa_attr.version; |
cfdda9d7 | 847 | mpa->private_data_size = htons(plen); |
d2fe99e8 KS |
848 | |
849 | if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { | |
850 | mpa->flags |= MPA_ENHANCED_RDMA_CONN; | |
f747c34a RD |
851 | mpa->private_data_size = htons(ntohs(mpa->private_data_size) + |
852 | sizeof (struct mpa_v2_conn_params)); | |
d2fe99e8 KS |
853 | mpa_v2_params.ird = htons(((u16)ep->ird) | |
854 | (peer2peer ? MPA_V2_PEER2PEER_MODEL : | |
855 | 0)); | |
856 | mpa_v2_params.ord = htons(((u16)ep->ord) | (peer2peer ? | |
857 | (p2p_type == | |
858 | FW_RI_INIT_P2PTYPE_RDMA_WRITE ? | |
859 | MPA_V2_RDMA_WRITE_RTR : p2p_type == | |
860 | FW_RI_INIT_P2PTYPE_READ_REQ ? | |
861 | MPA_V2_RDMA_READ_RTR : 0) : 0)); | |
862 | memcpy(mpa->private_data, &mpa_v2_params, | |
863 | sizeof(struct mpa_v2_conn_params)); | |
864 | ||
865 | if (ep->plen) | |
866 | memcpy(mpa->private_data + | |
867 | sizeof(struct mpa_v2_conn_params), pdata, plen); | |
868 | } else | |
869 | if (plen) | |
870 | memcpy(mpa->private_data, pdata, plen); | |
cfdda9d7 SW |
871 | |
872 | /* | |
873 | * Reference the mpa skb again. This ensures the data area | |
874 | * will remain in memory until the hw acks the tx. | |
875 | * Function fw4_ack() will deref it. | |
876 | */ | |
877 | skb_get(skb); | |
878 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
879 | t4_set_arp_err_handler(skb, NULL, arp_failure_discard); | |
880 | BUG_ON(ep->mpa_skb); | |
881 | ep->mpa_skb = skb; | |
882 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); | |
883 | } | |
884 | ||
885 | static int send_mpa_reply(struct c4iw_ep *ep, const void *pdata, u8 plen) | |
886 | { | |
887 | int mpalen, wrlen; | |
888 | struct fw_ofld_tx_data_wr *req; | |
889 | struct mpa_message *mpa; | |
890 | struct sk_buff *skb; | |
d2fe99e8 | 891 | struct mpa_v2_conn_params mpa_v2_params; |
cfdda9d7 SW |
892 | |
893 | PDBG("%s ep %p tid %u pd_len %d\n", __func__, ep, ep->hwtid, ep->plen); | |
894 | ||
895 | mpalen = sizeof(*mpa) + plen; | |
d2fe99e8 KS |
896 | if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) |
897 | mpalen += sizeof(struct mpa_v2_conn_params); | |
cfdda9d7 SW |
898 | wrlen = roundup(mpalen + sizeof *req, 16); |
899 | ||
900 | skb = get_skb(NULL, wrlen, GFP_KERNEL); | |
901 | if (!skb) { | |
902 | printk(KERN_ERR MOD "%s - cannot alloc skb!\n", __func__); | |
903 | return -ENOMEM; | |
904 | } | |
905 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
906 | ||
907 | req = (struct fw_ofld_tx_data_wr *) skb_put(skb, wrlen); | |
908 | memset(req, 0, wrlen); | |
909 | req->op_to_immdlen = cpu_to_be32( | |
910 | FW_WR_OP(FW_OFLD_TX_DATA_WR) | | |
911 | FW_WR_COMPL(1) | | |
912 | FW_WR_IMMDLEN(mpalen)); | |
913 | req->flowid_len16 = cpu_to_be32( | |
914 | FW_WR_FLOWID(ep->hwtid) | | |
915 | FW_WR_LEN16(wrlen >> 4)); | |
916 | req->plen = cpu_to_be32(mpalen); | |
917 | req->tunnel_to_proxy = cpu_to_be32( | |
918 | FW_OFLD_TX_DATA_WR_FLUSH(1) | | |
919 | FW_OFLD_TX_DATA_WR_SHOVE(1)); | |
920 | ||
921 | mpa = (struct mpa_message *)(req + 1); | |
922 | memset(mpa, 0, sizeof(*mpa)); | |
923 | memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key)); | |
924 | mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) | | |
925 | (markers_enabled ? MPA_MARKERS : 0); | |
d2fe99e8 | 926 | mpa->revision = ep->mpa_attr.version; |
cfdda9d7 | 927 | mpa->private_data_size = htons(plen); |
d2fe99e8 KS |
928 | |
929 | if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { | |
930 | mpa->flags |= MPA_ENHANCED_RDMA_CONN; | |
f747c34a RD |
931 | mpa->private_data_size = htons(ntohs(mpa->private_data_size) + |
932 | sizeof (struct mpa_v2_conn_params)); | |
d2fe99e8 KS |
933 | mpa_v2_params.ird = htons((u16)ep->ird); |
934 | mpa_v2_params.ord = htons((u16)ep->ord); | |
935 | if (peer2peer && (ep->mpa_attr.p2p_type != | |
936 | FW_RI_INIT_P2PTYPE_DISABLED)) { | |
937 | mpa_v2_params.ird |= htons(MPA_V2_PEER2PEER_MODEL); | |
938 | ||
939 | if (p2p_type == FW_RI_INIT_P2PTYPE_RDMA_WRITE) | |
940 | mpa_v2_params.ord |= | |
941 | htons(MPA_V2_RDMA_WRITE_RTR); | |
942 | else if (p2p_type == FW_RI_INIT_P2PTYPE_READ_REQ) | |
943 | mpa_v2_params.ord |= | |
944 | htons(MPA_V2_RDMA_READ_RTR); | |
945 | } | |
946 | ||
947 | memcpy(mpa->private_data, &mpa_v2_params, | |
948 | sizeof(struct mpa_v2_conn_params)); | |
949 | ||
950 | if (ep->plen) | |
951 | memcpy(mpa->private_data + | |
952 | sizeof(struct mpa_v2_conn_params), pdata, plen); | |
953 | } else | |
954 | if (plen) | |
955 | memcpy(mpa->private_data, pdata, plen); | |
cfdda9d7 SW |
956 | |
957 | /* | |
958 | * Reference the mpa skb. This ensures the data area | |
959 | * will remain in memory until the hw acks the tx. | |
960 | * Function fw4_ack() will deref it. | |
961 | */ | |
962 | skb_get(skb); | |
963 | t4_set_arp_err_handler(skb, NULL, arp_failure_discard); | |
964 | ep->mpa_skb = skb; | |
965 | state_set(&ep->com, MPA_REP_SENT); | |
966 | return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); | |
967 | } | |
968 | ||
969 | static int act_establish(struct c4iw_dev *dev, struct sk_buff *skb) | |
970 | { | |
971 | struct c4iw_ep *ep; | |
972 | struct cpl_act_establish *req = cplhdr(skb); | |
973 | unsigned int tid = GET_TID(req); | |
974 | unsigned int atid = GET_TID_TID(ntohl(req->tos_atid)); | |
975 | struct tid_info *t = dev->rdev.lldi.tids; | |
976 | ||
977 | ep = lookup_atid(t, atid); | |
978 | ||
979 | PDBG("%s ep %p tid %u snd_isn %u rcv_isn %u\n", __func__, ep, tid, | |
980 | be32_to_cpu(req->snd_isn), be32_to_cpu(req->rcv_isn)); | |
981 | ||
982 | dst_confirm(ep->dst); | |
983 | ||
984 | /* setup the hwtid for this connection */ | |
985 | ep->hwtid = tid; | |
986 | cxgb4_insert_tid(t, ep, tid); | |
793dad94 | 987 | insert_handle(dev, &dev->hwtid_idr, ep, ep->hwtid); |
cfdda9d7 SW |
988 | |
989 | ep->snd_seq = be32_to_cpu(req->snd_isn); | |
990 | ep->rcv_seq = be32_to_cpu(req->rcv_isn); | |
991 | ||
992 | set_emss(ep, ntohs(req->tcp_opt)); | |
993 | ||
994 | /* dealloc the atid */ | |
793dad94 | 995 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, atid); |
cfdda9d7 | 996 | cxgb4_free_atid(t, atid); |
793dad94 | 997 | set_bit(ACT_ESTAB, &ep->com.history); |
cfdda9d7 SW |
998 | |
999 | /* start MPA negotiation */ | |
1000 | send_flowc(ep, NULL); | |
d2fe99e8 KS |
1001 | if (ep->retry_with_mpa_v1) |
1002 | send_mpa_req(ep, skb, 1); | |
1003 | else | |
1004 | send_mpa_req(ep, skb, mpa_rev); | |
cfdda9d7 SW |
1005 | |
1006 | return 0; | |
1007 | } | |
1008 | ||
1009 | static void close_complete_upcall(struct c4iw_ep *ep) | |
1010 | { | |
1011 | struct iw_cm_event event; | |
1012 | ||
1013 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1014 | memset(&event, 0, sizeof(event)); | |
1015 | event.event = IW_CM_EVENT_CLOSE; | |
1016 | if (ep->com.cm_id) { | |
1017 | PDBG("close complete delivered ep %p cm_id %p tid %u\n", | |
1018 | ep, ep->com.cm_id, ep->hwtid); | |
1019 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
1020 | ep->com.cm_id->rem_ref(ep->com.cm_id); | |
1021 | ep->com.cm_id = NULL; | |
793dad94 | 1022 | set_bit(CLOSE_UPCALL, &ep->com.history); |
cfdda9d7 SW |
1023 | } |
1024 | } | |
1025 | ||
1026 | static int abort_connection(struct c4iw_ep *ep, struct sk_buff *skb, gfp_t gfp) | |
1027 | { | |
1028 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1029 | close_complete_upcall(ep); | |
1030 | state_set(&ep->com, ABORTING); | |
793dad94 | 1031 | set_bit(ABORT_CONN, &ep->com.history); |
cfdda9d7 SW |
1032 | return send_abort(ep, skb, gfp); |
1033 | } | |
1034 | ||
1035 | static void peer_close_upcall(struct c4iw_ep *ep) | |
1036 | { | |
1037 | struct iw_cm_event event; | |
1038 | ||
1039 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1040 | memset(&event, 0, sizeof(event)); | |
1041 | event.event = IW_CM_EVENT_DISCONNECT; | |
1042 | if (ep->com.cm_id) { | |
1043 | PDBG("peer close delivered ep %p cm_id %p tid %u\n", | |
1044 | ep, ep->com.cm_id, ep->hwtid); | |
1045 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
793dad94 | 1046 | set_bit(DISCONN_UPCALL, &ep->com.history); |
cfdda9d7 SW |
1047 | } |
1048 | } | |
1049 | ||
1050 | static void peer_abort_upcall(struct c4iw_ep *ep) | |
1051 | { | |
1052 | struct iw_cm_event event; | |
1053 | ||
1054 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1055 | memset(&event, 0, sizeof(event)); | |
1056 | event.event = IW_CM_EVENT_CLOSE; | |
1057 | event.status = -ECONNRESET; | |
1058 | if (ep->com.cm_id) { | |
1059 | PDBG("abort delivered ep %p cm_id %p tid %u\n", ep, | |
1060 | ep->com.cm_id, ep->hwtid); | |
1061 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
1062 | ep->com.cm_id->rem_ref(ep->com.cm_id); | |
1063 | ep->com.cm_id = NULL; | |
793dad94 | 1064 | set_bit(ABORT_UPCALL, &ep->com.history); |
cfdda9d7 SW |
1065 | } |
1066 | } | |
1067 | ||
1068 | static void connect_reply_upcall(struct c4iw_ep *ep, int status) | |
1069 | { | |
1070 | struct iw_cm_event event; | |
1071 | ||
1072 | PDBG("%s ep %p tid %u status %d\n", __func__, ep, ep->hwtid, status); | |
1073 | memset(&event, 0, sizeof(event)); | |
1074 | event.event = IW_CM_EVENT_CONNECT_REPLY; | |
1075 | event.status = status; | |
24d44a39 SW |
1076 | memcpy(&event.local_addr, &ep->com.local_addr, |
1077 | sizeof(ep->com.local_addr)); | |
1078 | memcpy(&event.remote_addr, &ep->com.remote_addr, | |
1079 | sizeof(ep->com.remote_addr)); | |
cfdda9d7 SW |
1080 | |
1081 | if ((status == 0) || (status == -ECONNREFUSED)) { | |
d2fe99e8 KS |
1082 | if (!ep->tried_with_mpa_v1) { |
1083 | /* this means MPA_v2 is used */ | |
1084 | event.private_data_len = ep->plen - | |
1085 | sizeof(struct mpa_v2_conn_params); | |
1086 | event.private_data = ep->mpa_pkt + | |
1087 | sizeof(struct mpa_message) + | |
1088 | sizeof(struct mpa_v2_conn_params); | |
1089 | } else { | |
1090 | /* this means MPA_v1 is used */ | |
1091 | event.private_data_len = ep->plen; | |
1092 | event.private_data = ep->mpa_pkt + | |
1093 | sizeof(struct mpa_message); | |
1094 | } | |
cfdda9d7 | 1095 | } |
85963e4c RD |
1096 | |
1097 | PDBG("%s ep %p tid %u status %d\n", __func__, ep, | |
1098 | ep->hwtid, status); | |
793dad94 | 1099 | set_bit(CONN_RPL_UPCALL, &ep->com.history); |
85963e4c RD |
1100 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); |
1101 | ||
cfdda9d7 SW |
1102 | if (status < 0) { |
1103 | ep->com.cm_id->rem_ref(ep->com.cm_id); | |
1104 | ep->com.cm_id = NULL; | |
cfdda9d7 SW |
1105 | } |
1106 | } | |
1107 | ||
1108 | static void connect_request_upcall(struct c4iw_ep *ep) | |
1109 | { | |
1110 | struct iw_cm_event event; | |
1111 | ||
1112 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1113 | memset(&event, 0, sizeof(event)); | |
1114 | event.event = IW_CM_EVENT_CONNECT_REQUEST; | |
24d44a39 SW |
1115 | memcpy(&event.local_addr, &ep->com.local_addr, |
1116 | sizeof(ep->com.local_addr)); | |
1117 | memcpy(&event.remote_addr, &ep->com.remote_addr, | |
1118 | sizeof(ep->com.remote_addr)); | |
cfdda9d7 | 1119 | event.provider_data = ep; |
d2fe99e8 KS |
1120 | if (!ep->tried_with_mpa_v1) { |
1121 | /* this means MPA_v2 is used */ | |
1122 | event.ord = ep->ord; | |
1123 | event.ird = ep->ird; | |
1124 | event.private_data_len = ep->plen - | |
1125 | sizeof(struct mpa_v2_conn_params); | |
1126 | event.private_data = ep->mpa_pkt + sizeof(struct mpa_message) + | |
1127 | sizeof(struct mpa_v2_conn_params); | |
1128 | } else { | |
1129 | /* this means MPA_v1 is used. Send max supported */ | |
1130 | event.ord = c4iw_max_read_depth; | |
1131 | event.ird = c4iw_max_read_depth; | |
1132 | event.private_data_len = ep->plen; | |
1133 | event.private_data = ep->mpa_pkt + sizeof(struct mpa_message); | |
1134 | } | |
cfdda9d7 SW |
1135 | if (state_read(&ep->parent_ep->com) != DEAD) { |
1136 | c4iw_get_ep(&ep->com); | |
1137 | ep->parent_ep->com.cm_id->event_handler( | |
1138 | ep->parent_ep->com.cm_id, | |
1139 | &event); | |
1140 | } | |
793dad94 | 1141 | set_bit(CONNREQ_UPCALL, &ep->com.history); |
cfdda9d7 SW |
1142 | c4iw_put_ep(&ep->parent_ep->com); |
1143 | ep->parent_ep = NULL; | |
1144 | } | |
1145 | ||
1146 | static void established_upcall(struct c4iw_ep *ep) | |
1147 | { | |
1148 | struct iw_cm_event event; | |
1149 | ||
1150 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1151 | memset(&event, 0, sizeof(event)); | |
1152 | event.event = IW_CM_EVENT_ESTABLISHED; | |
d2fe99e8 KS |
1153 | event.ird = ep->ird; |
1154 | event.ord = ep->ord; | |
cfdda9d7 SW |
1155 | if (ep->com.cm_id) { |
1156 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1157 | ep->com.cm_id->event_handler(ep->com.cm_id, &event); | |
793dad94 | 1158 | set_bit(ESTAB_UPCALL, &ep->com.history); |
cfdda9d7 SW |
1159 | } |
1160 | } | |
1161 | ||
1162 | static int update_rx_credits(struct c4iw_ep *ep, u32 credits) | |
1163 | { | |
1164 | struct cpl_rx_data_ack *req; | |
1165 | struct sk_buff *skb; | |
1166 | int wrlen = roundup(sizeof *req, 16); | |
1167 | ||
1168 | PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits); | |
1169 | skb = get_skb(NULL, wrlen, GFP_KERNEL); | |
1170 | if (!skb) { | |
1171 | printk(KERN_ERR MOD "update_rx_credits - cannot alloc skb!\n"); | |
1172 | return 0; | |
1173 | } | |
1174 | ||
1175 | req = (struct cpl_rx_data_ack *) skb_put(skb, wrlen); | |
1176 | memset(req, 0, wrlen); | |
1177 | INIT_TP_WR(req, ep->hwtid); | |
1178 | OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_RX_DATA_ACK, | |
1179 | ep->hwtid)); | |
ba6d3925 SW |
1180 | req->credit_dack = cpu_to_be32(credits | RX_FORCE_ACK(1) | |
1181 | F_RX_DACK_CHANGE | | |
1182 | V_RX_DACK_MODE(dack_mode)); | |
d4f1a5c6 | 1183 | set_wr_txq(skb, CPL_PRIORITY_ACK, ep->ctrlq_idx); |
cfdda9d7 SW |
1184 | c4iw_ofld_send(&ep->com.dev->rdev, skb); |
1185 | return credits; | |
1186 | } | |
1187 | ||
1188 | static void process_mpa_reply(struct c4iw_ep *ep, struct sk_buff *skb) | |
1189 | { | |
1190 | struct mpa_message *mpa; | |
d2fe99e8 | 1191 | struct mpa_v2_conn_params *mpa_v2_params; |
cfdda9d7 | 1192 | u16 plen; |
d2fe99e8 KS |
1193 | u16 resp_ird, resp_ord; |
1194 | u8 rtr_mismatch = 0, insuff_ird = 0; | |
cfdda9d7 SW |
1195 | struct c4iw_qp_attributes attrs; |
1196 | enum c4iw_qp_attr_mask mask; | |
1197 | int err; | |
1198 | ||
1199 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1200 | ||
1201 | /* | |
1202 | * Stop mpa timer. If it expired, then the state has | |
1203 | * changed and we bail since ep_timeout already aborted | |
1204 | * the connection. | |
1205 | */ | |
1206 | stop_ep_timer(ep); | |
1207 | if (state_read(&ep->com) != MPA_REQ_SENT) | |
1208 | return; | |
1209 | ||
1210 | /* | |
1211 | * If we get more than the supported amount of private data | |
1212 | * then we must fail this connection. | |
1213 | */ | |
1214 | if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) { | |
1215 | err = -EINVAL; | |
1216 | goto err; | |
1217 | } | |
1218 | ||
1219 | /* | |
1220 | * copy the new data into our accumulation buffer. | |
1221 | */ | |
1222 | skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]), | |
1223 | skb->len); | |
1224 | ep->mpa_pkt_len += skb->len; | |
1225 | ||
1226 | /* | |
1227 | * if we don't even have the mpa message, then bail. | |
1228 | */ | |
1229 | if (ep->mpa_pkt_len < sizeof(*mpa)) | |
1230 | return; | |
1231 | mpa = (struct mpa_message *) ep->mpa_pkt; | |
1232 | ||
1233 | /* Validate MPA header. */ | |
d2fe99e8 KS |
1234 | if (mpa->revision > mpa_rev) { |
1235 | printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d," | |
1236 | " Received = %d\n", __func__, mpa_rev, mpa->revision); | |
cfdda9d7 SW |
1237 | err = -EPROTO; |
1238 | goto err; | |
1239 | } | |
1240 | if (memcmp(mpa->key, MPA_KEY_REP, sizeof(mpa->key))) { | |
1241 | err = -EPROTO; | |
1242 | goto err; | |
1243 | } | |
1244 | ||
1245 | plen = ntohs(mpa->private_data_size); | |
1246 | ||
1247 | /* | |
1248 | * Fail if there's too much private data. | |
1249 | */ | |
1250 | if (plen > MPA_MAX_PRIVATE_DATA) { | |
1251 | err = -EPROTO; | |
1252 | goto err; | |
1253 | } | |
1254 | ||
1255 | /* | |
1256 | * If plen does not account for pkt size | |
1257 | */ | |
1258 | if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { | |
1259 | err = -EPROTO; | |
1260 | goto err; | |
1261 | } | |
1262 | ||
1263 | ep->plen = (u8) plen; | |
1264 | ||
1265 | /* | |
1266 | * If we don't have all the pdata yet, then bail. | |
1267 | * We'll continue process when more data arrives. | |
1268 | */ | |
1269 | if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) | |
1270 | return; | |
1271 | ||
1272 | if (mpa->flags & MPA_REJECT) { | |
1273 | err = -ECONNREFUSED; | |
1274 | goto err; | |
1275 | } | |
1276 | ||
1277 | /* | |
1278 | * If we get here we have accumulated the entire mpa | |
1279 | * start reply message including private data. And | |
1280 | * the MPA header is valid. | |
1281 | */ | |
1282 | state_set(&ep->com, FPDU_MODE); | |
1283 | ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; | |
1284 | ep->mpa_attr.recv_marker_enabled = markers_enabled; | |
1285 | ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; | |
d2fe99e8 KS |
1286 | ep->mpa_attr.version = mpa->revision; |
1287 | ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; | |
1288 | ||
1289 | if (mpa->revision == 2) { | |
1290 | ep->mpa_attr.enhanced_rdma_conn = | |
1291 | mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; | |
1292 | if (ep->mpa_attr.enhanced_rdma_conn) { | |
1293 | mpa_v2_params = (struct mpa_v2_conn_params *) | |
1294 | (ep->mpa_pkt + sizeof(*mpa)); | |
1295 | resp_ird = ntohs(mpa_v2_params->ird) & | |
1296 | MPA_V2_IRD_ORD_MASK; | |
1297 | resp_ord = ntohs(mpa_v2_params->ord) & | |
1298 | MPA_V2_IRD_ORD_MASK; | |
1299 | ||
1300 | /* | |
1301 | * This is a double-check. Ideally, below checks are | |
1302 | * not required since ird/ord stuff has been taken | |
1303 | * care of in c4iw_accept_cr | |
1304 | */ | |
1305 | if ((ep->ird < resp_ord) || (ep->ord > resp_ird)) { | |
1306 | err = -ENOMEM; | |
1307 | ep->ird = resp_ord; | |
1308 | ep->ord = resp_ird; | |
1309 | insuff_ird = 1; | |
1310 | } | |
1311 | ||
1312 | if (ntohs(mpa_v2_params->ird) & | |
1313 | MPA_V2_PEER2PEER_MODEL) { | |
1314 | if (ntohs(mpa_v2_params->ord) & | |
1315 | MPA_V2_RDMA_WRITE_RTR) | |
1316 | ep->mpa_attr.p2p_type = | |
1317 | FW_RI_INIT_P2PTYPE_RDMA_WRITE; | |
1318 | else if (ntohs(mpa_v2_params->ord) & | |
1319 | MPA_V2_RDMA_READ_RTR) | |
1320 | ep->mpa_attr.p2p_type = | |
1321 | FW_RI_INIT_P2PTYPE_READ_REQ; | |
1322 | } | |
1323 | } | |
1324 | } else if (mpa->revision == 1) | |
1325 | if (peer2peer) | |
1326 | ep->mpa_attr.p2p_type = p2p_type; | |
1327 | ||
cfdda9d7 | 1328 | PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " |
d2fe99e8 KS |
1329 | "xmit_marker_enabled=%d, version=%d p2p_type=%d local-p2p_type = " |
1330 | "%d\n", __func__, ep->mpa_attr.crc_enabled, | |
1331 | ep->mpa_attr.recv_marker_enabled, | |
1332 | ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, | |
1333 | ep->mpa_attr.p2p_type, p2p_type); | |
1334 | ||
1335 | /* | |
1336 | * If responder's RTR does not match with that of initiator, assign | |
1337 | * FW_RI_INIT_P2PTYPE_DISABLED in mpa attributes so that RTR is not | |
1338 | * generated when moving QP to RTS state. | |
1339 | * A TERM message will be sent after QP has moved to RTS state | |
1340 | */ | |
91018f86 | 1341 | if ((ep->mpa_attr.version == 2) && peer2peer && |
d2fe99e8 KS |
1342 | (ep->mpa_attr.p2p_type != p2p_type)) { |
1343 | ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; | |
1344 | rtr_mismatch = 1; | |
1345 | } | |
cfdda9d7 SW |
1346 | |
1347 | attrs.mpa_attr = ep->mpa_attr; | |
1348 | attrs.max_ird = ep->ird; | |
1349 | attrs.max_ord = ep->ord; | |
1350 | attrs.llp_stream_handle = ep; | |
1351 | attrs.next_state = C4IW_QP_STATE_RTS; | |
1352 | ||
1353 | mask = C4IW_QP_ATTR_NEXT_STATE | | |
1354 | C4IW_QP_ATTR_LLP_STREAM_HANDLE | C4IW_QP_ATTR_MPA_ATTR | | |
1355 | C4IW_QP_ATTR_MAX_IRD | C4IW_QP_ATTR_MAX_ORD; | |
1356 | ||
1357 | /* bind QP and TID with INIT_WR */ | |
1358 | err = c4iw_modify_qp(ep->com.qp->rhp, | |
1359 | ep->com.qp, mask, &attrs, 1); | |
1360 | if (err) | |
1361 | goto err; | |
d2fe99e8 KS |
1362 | |
1363 | /* | |
1364 | * If responder's RTR requirement did not match with what initiator | |
1365 | * supports, generate TERM message | |
1366 | */ | |
1367 | if (rtr_mismatch) { | |
1368 | printk(KERN_ERR "%s: RTR mismatch, sending TERM\n", __func__); | |
1369 | attrs.layer_etype = LAYER_MPA | DDP_LLP; | |
1370 | attrs.ecode = MPA_NOMATCH_RTR; | |
1371 | attrs.next_state = C4IW_QP_STATE_TERMINATE; | |
1372 | err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, | |
1373 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 0); | |
1374 | err = -ENOMEM; | |
1375 | goto out; | |
1376 | } | |
1377 | ||
1378 | /* | |
1379 | * Generate TERM if initiator IRD is not sufficient for responder | |
1380 | * provided ORD. Currently, we do the same behaviour even when | |
1381 | * responder provided IRD is also not sufficient as regards to | |
1382 | * initiator ORD. | |
1383 | */ | |
1384 | if (insuff_ird) { | |
1385 | printk(KERN_ERR "%s: Insufficient IRD, sending TERM\n", | |
1386 | __func__); | |
1387 | attrs.layer_etype = LAYER_MPA | DDP_LLP; | |
1388 | attrs.ecode = MPA_INSUFF_IRD; | |
1389 | attrs.next_state = C4IW_QP_STATE_TERMINATE; | |
1390 | err = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, | |
1391 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 0); | |
1392 | err = -ENOMEM; | |
1393 | goto out; | |
1394 | } | |
cfdda9d7 SW |
1395 | goto out; |
1396 | err: | |
b21ef16a SW |
1397 | state_set(&ep->com, ABORTING); |
1398 | send_abort(ep, skb, GFP_KERNEL); | |
cfdda9d7 SW |
1399 | out: |
1400 | connect_reply_upcall(ep, err); | |
1401 | return; | |
1402 | } | |
1403 | ||
1404 | static void process_mpa_request(struct c4iw_ep *ep, struct sk_buff *skb) | |
1405 | { | |
1406 | struct mpa_message *mpa; | |
d2fe99e8 | 1407 | struct mpa_v2_conn_params *mpa_v2_params; |
cfdda9d7 SW |
1408 | u16 plen; |
1409 | ||
1410 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1411 | ||
1412 | if (state_read(&ep->com) != MPA_REQ_WAIT) | |
1413 | return; | |
1414 | ||
1415 | /* | |
1416 | * If we get more than the supported amount of private data | |
1417 | * then we must fail this connection. | |
1418 | */ | |
1419 | if (ep->mpa_pkt_len + skb->len > sizeof(ep->mpa_pkt)) { | |
1420 | stop_ep_timer(ep); | |
1421 | abort_connection(ep, skb, GFP_KERNEL); | |
1422 | return; | |
1423 | } | |
1424 | ||
1425 | PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__); | |
1426 | ||
1427 | /* | |
1428 | * Copy the new data into our accumulation buffer. | |
1429 | */ | |
1430 | skb_copy_from_linear_data(skb, &(ep->mpa_pkt[ep->mpa_pkt_len]), | |
1431 | skb->len); | |
1432 | ep->mpa_pkt_len += skb->len; | |
1433 | ||
1434 | /* | |
1435 | * If we don't even have the mpa message, then bail. | |
1436 | * We'll continue process when more data arrives. | |
1437 | */ | |
1438 | if (ep->mpa_pkt_len < sizeof(*mpa)) | |
1439 | return; | |
1440 | ||
1441 | PDBG("%s enter (%s line %u)\n", __func__, __FILE__, __LINE__); | |
1442 | stop_ep_timer(ep); | |
1443 | mpa = (struct mpa_message *) ep->mpa_pkt; | |
1444 | ||
1445 | /* | |
1446 | * Validate MPA Header. | |
1447 | */ | |
d2fe99e8 KS |
1448 | if (mpa->revision > mpa_rev) { |
1449 | printk(KERN_ERR MOD "%s MPA version mismatch. Local = %d," | |
1450 | " Received = %d\n", __func__, mpa_rev, mpa->revision); | |
7c0a33d6 | 1451 | stop_ep_timer(ep); |
cfdda9d7 SW |
1452 | abort_connection(ep, skb, GFP_KERNEL); |
1453 | return; | |
1454 | } | |
1455 | ||
1456 | if (memcmp(mpa->key, MPA_KEY_REQ, sizeof(mpa->key))) { | |
7c0a33d6 | 1457 | stop_ep_timer(ep); |
cfdda9d7 SW |
1458 | abort_connection(ep, skb, GFP_KERNEL); |
1459 | return; | |
1460 | } | |
1461 | ||
1462 | plen = ntohs(mpa->private_data_size); | |
1463 | ||
1464 | /* | |
1465 | * Fail if there's too much private data. | |
1466 | */ | |
1467 | if (plen > MPA_MAX_PRIVATE_DATA) { | |
7c0a33d6 | 1468 | stop_ep_timer(ep); |
cfdda9d7 SW |
1469 | abort_connection(ep, skb, GFP_KERNEL); |
1470 | return; | |
1471 | } | |
1472 | ||
1473 | /* | |
1474 | * If plen does not account for pkt size | |
1475 | */ | |
1476 | if (ep->mpa_pkt_len > (sizeof(*mpa) + plen)) { | |
7c0a33d6 | 1477 | stop_ep_timer(ep); |
cfdda9d7 SW |
1478 | abort_connection(ep, skb, GFP_KERNEL); |
1479 | return; | |
1480 | } | |
1481 | ep->plen = (u8) plen; | |
1482 | ||
1483 | /* | |
1484 | * If we don't have all the pdata yet, then bail. | |
1485 | */ | |
1486 | if (ep->mpa_pkt_len < (sizeof(*mpa) + plen)) | |
1487 | return; | |
1488 | ||
1489 | /* | |
1490 | * If we get here we have accumulated the entire mpa | |
1491 | * start reply message including private data. | |
1492 | */ | |
1493 | ep->mpa_attr.initiator = 0; | |
1494 | ep->mpa_attr.crc_enabled = (mpa->flags & MPA_CRC) | crc_enabled ? 1 : 0; | |
1495 | ep->mpa_attr.recv_marker_enabled = markers_enabled; | |
1496 | ep->mpa_attr.xmit_marker_enabled = mpa->flags & MPA_MARKERS ? 1 : 0; | |
d2fe99e8 KS |
1497 | ep->mpa_attr.version = mpa->revision; |
1498 | if (mpa->revision == 1) | |
1499 | ep->tried_with_mpa_v1 = 1; | |
1500 | ep->mpa_attr.p2p_type = FW_RI_INIT_P2PTYPE_DISABLED; | |
1501 | ||
1502 | if (mpa->revision == 2) { | |
1503 | ep->mpa_attr.enhanced_rdma_conn = | |
1504 | mpa->flags & MPA_ENHANCED_RDMA_CONN ? 1 : 0; | |
1505 | if (ep->mpa_attr.enhanced_rdma_conn) { | |
1506 | mpa_v2_params = (struct mpa_v2_conn_params *) | |
1507 | (ep->mpa_pkt + sizeof(*mpa)); | |
1508 | ep->ird = ntohs(mpa_v2_params->ird) & | |
1509 | MPA_V2_IRD_ORD_MASK; | |
1510 | ep->ord = ntohs(mpa_v2_params->ord) & | |
1511 | MPA_V2_IRD_ORD_MASK; | |
1512 | if (ntohs(mpa_v2_params->ird) & MPA_V2_PEER2PEER_MODEL) | |
1513 | if (peer2peer) { | |
1514 | if (ntohs(mpa_v2_params->ord) & | |
1515 | MPA_V2_RDMA_WRITE_RTR) | |
1516 | ep->mpa_attr.p2p_type = | |
1517 | FW_RI_INIT_P2PTYPE_RDMA_WRITE; | |
1518 | else if (ntohs(mpa_v2_params->ord) & | |
1519 | MPA_V2_RDMA_READ_RTR) | |
1520 | ep->mpa_attr.p2p_type = | |
1521 | FW_RI_INIT_P2PTYPE_READ_REQ; | |
1522 | } | |
1523 | } | |
1524 | } else if (mpa->revision == 1) | |
1525 | if (peer2peer) | |
1526 | ep->mpa_attr.p2p_type = p2p_type; | |
1527 | ||
cfdda9d7 SW |
1528 | PDBG("%s - crc_enabled=%d, recv_marker_enabled=%d, " |
1529 | "xmit_marker_enabled=%d, version=%d p2p_type=%d\n", __func__, | |
1530 | ep->mpa_attr.crc_enabled, ep->mpa_attr.recv_marker_enabled, | |
1531 | ep->mpa_attr.xmit_marker_enabled, ep->mpa_attr.version, | |
1532 | ep->mpa_attr.p2p_type); | |
1533 | ||
1534 | state_set(&ep->com, MPA_REQ_RCVD); | |
1535 | ||
1536 | /* drive upcall */ | |
1537 | connect_request_upcall(ep); | |
1538 | return; | |
1539 | } | |
1540 | ||
1541 | static int rx_data(struct c4iw_dev *dev, struct sk_buff *skb) | |
1542 | { | |
1543 | struct c4iw_ep *ep; | |
1544 | struct cpl_rx_data *hdr = cplhdr(skb); | |
1545 | unsigned int dlen = ntohs(hdr->len); | |
1546 | unsigned int tid = GET_TID(hdr); | |
1547 | struct tid_info *t = dev->rdev.lldi.tids; | |
793dad94 | 1548 | __u8 status = hdr->status; |
cfdda9d7 SW |
1549 | |
1550 | ep = lookup_tid(t, tid); | |
1551 | PDBG("%s ep %p tid %u dlen %u\n", __func__, ep, ep->hwtid, dlen); | |
1552 | skb_pull(skb, sizeof(*hdr)); | |
1553 | skb_trim(skb, dlen); | |
1554 | ||
cfdda9d7 SW |
1555 | /* update RX credits */ |
1556 | update_rx_credits(ep, dlen); | |
1557 | ||
1558 | switch (state_read(&ep->com)) { | |
1559 | case MPA_REQ_SENT: | |
55abf8df | 1560 | ep->rcv_seq += dlen; |
cfdda9d7 SW |
1561 | process_mpa_reply(ep, skb); |
1562 | break; | |
1563 | case MPA_REQ_WAIT: | |
55abf8df | 1564 | ep->rcv_seq += dlen; |
cfdda9d7 SW |
1565 | process_mpa_request(ep, skb); |
1566 | break; | |
1557967b VP |
1567 | case FPDU_MODE: { |
1568 | struct c4iw_qp_attributes attrs; | |
1569 | BUG_ON(!ep->com.qp); | |
e8e5b927 | 1570 | if (status) |
1557967b | 1571 | pr_err("%s Unexpected streaming data." \ |
04236df2 VP |
1572 | " qpid %u ep %p state %d tid %u status %d\n", |
1573 | __func__, ep->com.qp->wq.sq.qid, ep, | |
1574 | state_read(&ep->com), ep->hwtid, status); | |
97d7ec0c | 1575 | attrs.next_state = C4IW_QP_STATE_TERMINATE; |
1557967b | 1576 | c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, |
97d7ec0c | 1577 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 0); |
cfdda9d7 SW |
1578 | break; |
1579 | } | |
1557967b VP |
1580 | default: |
1581 | break; | |
1582 | } | |
cfdda9d7 SW |
1583 | return 0; |
1584 | } | |
1585 | ||
1586 | static int abort_rpl(struct c4iw_dev *dev, struct sk_buff *skb) | |
1587 | { | |
1588 | struct c4iw_ep *ep; | |
1589 | struct cpl_abort_rpl_rss *rpl = cplhdr(skb); | |
cfdda9d7 SW |
1590 | int release = 0; |
1591 | unsigned int tid = GET_TID(rpl); | |
1592 | struct tid_info *t = dev->rdev.lldi.tids; | |
1593 | ||
1594 | ep = lookup_tid(t, tid); | |
4984037b VP |
1595 | if (!ep) { |
1596 | printk(KERN_WARNING MOD "Abort rpl to freed endpoint\n"); | |
1597 | return 0; | |
1598 | } | |
92dd6c3d | 1599 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); |
2f5b48c3 | 1600 | mutex_lock(&ep->com.mutex); |
cfdda9d7 SW |
1601 | switch (ep->com.state) { |
1602 | case ABORTING: | |
91e9c071 | 1603 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); |
cfdda9d7 SW |
1604 | __state_set(&ep->com, DEAD); |
1605 | release = 1; | |
1606 | break; | |
1607 | default: | |
1608 | printk(KERN_ERR "%s ep %p state %d\n", | |
1609 | __func__, ep, ep->com.state); | |
1610 | break; | |
1611 | } | |
2f5b48c3 | 1612 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
1613 | |
1614 | if (release) | |
1615 | release_ep_resources(ep); | |
1616 | return 0; | |
1617 | } | |
1618 | ||
5be78ee9 VP |
1619 | static void send_fw_act_open_req(struct c4iw_ep *ep, unsigned int atid) |
1620 | { | |
1621 | struct sk_buff *skb; | |
1622 | struct fw_ofld_connection_wr *req; | |
1623 | unsigned int mtu_idx; | |
1624 | int wscale; | |
830662f6 | 1625 | struct sockaddr_in *sin; |
5be78ee9 VP |
1626 | |
1627 | skb = get_skb(NULL, sizeof(*req), GFP_KERNEL); | |
1628 | req = (struct fw_ofld_connection_wr *)__skb_put(skb, sizeof(*req)); | |
1629 | memset(req, 0, sizeof(*req)); | |
1630 | req->op_compl = htonl(V_WR_OP(FW_OFLD_CONNECTION_WR)); | |
1631 | req->len16_pkd = htonl(FW_WR_LEN16(DIV_ROUND_UP(sizeof(*req), 16))); | |
1632 | req->le.filter = cpu_to_be32(select_ntuple(ep->com.dev, ep->dst, | |
1633 | ep->l2t)); | |
830662f6 VP |
1634 | sin = (struct sockaddr_in *)&ep->com.local_addr; |
1635 | req->le.lport = sin->sin_port; | |
1636 | req->le.u.ipv4.lip = sin->sin_addr.s_addr; | |
1637 | sin = (struct sockaddr_in *)&ep->com.remote_addr; | |
1638 | req->le.pport = sin->sin_port; | |
1639 | req->le.u.ipv4.pip = sin->sin_addr.s_addr; | |
5be78ee9 VP |
1640 | req->tcb.t_state_to_astid = |
1641 | htonl(V_FW_OFLD_CONNECTION_WR_T_STATE(TCP_SYN_SENT) | | |
1642 | V_FW_OFLD_CONNECTION_WR_ASTID(atid)); | |
1643 | req->tcb.cplrxdataack_cplpassacceptrpl = | |
1644 | htons(F_FW_OFLD_CONNECTION_WR_CPLRXDATAACK); | |
ef5d6355 | 1645 | req->tcb.tx_max = (__force __be32) jiffies; |
793dad94 | 1646 | req->tcb.rcv_adv = htons(1); |
5be78ee9 VP |
1647 | cxgb4_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx); |
1648 | wscale = compute_wscale(rcv_win); | |
ef5d6355 | 1649 | req->tcb.opt0 = (__force __be64) (TCAM_BYPASS(1) | |
5be78ee9 VP |
1650 | (nocong ? NO_CONG(1) : 0) | |
1651 | KEEP_ALIVE(1) | | |
1652 | DELACK(1) | | |
1653 | WND_SCALE(wscale) | | |
1654 | MSS_IDX(mtu_idx) | | |
1655 | L2T_IDX(ep->l2t->idx) | | |
1656 | TX_CHAN(ep->tx_chan) | | |
1657 | SMAC_SEL(ep->smac_idx) | | |
1658 | DSCP(ep->tos) | | |
1659 | ULP_MODE(ULP_MODE_TCPDDP) | | |
ef5d6355 VP |
1660 | RCV_BUFSIZ(rcv_win >> 10)); |
1661 | req->tcb.opt2 = (__force __be32) (PACE(1) | | |
5be78ee9 VP |
1662 | TX_QUEUE(ep->com.dev->rdev.lldi.tx_modq[ep->tx_chan]) | |
1663 | RX_CHANNEL(0) | | |
1664 | CCTRL_ECN(enable_ecn) | | |
ef5d6355 | 1665 | RSS_QUEUE_VALID | RSS_QUEUE(ep->rss_qid)); |
5be78ee9 | 1666 | if (enable_tcp_timestamps) |
ef5d6355 | 1667 | req->tcb.opt2 |= (__force __be32) TSTAMPS_EN(1); |
5be78ee9 | 1668 | if (enable_tcp_sack) |
ef5d6355 | 1669 | req->tcb.opt2 |= (__force __be32) SACK_EN(1); |
5be78ee9 | 1670 | if (wscale && enable_tcp_window_scaling) |
ef5d6355 VP |
1671 | req->tcb.opt2 |= (__force __be32) WND_SCALE_EN(1); |
1672 | req->tcb.opt0 = cpu_to_be64((__force u64) req->tcb.opt0); | |
1673 | req->tcb.opt2 = cpu_to_be32((__force u32) req->tcb.opt2); | |
793dad94 VP |
1674 | set_wr_txq(skb, CPL_PRIORITY_CONTROL, ep->ctrlq_idx); |
1675 | set_bit(ACT_OFLD_CONN, &ep->com.history); | |
5be78ee9 VP |
1676 | c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
1677 | } | |
1678 | ||
cfdda9d7 SW |
1679 | /* |
1680 | * Return whether a failed active open has allocated a TID | |
1681 | */ | |
1682 | static inline int act_open_has_tid(int status) | |
1683 | { | |
1684 | return status != CPL_ERR_TCAM_FULL && status != CPL_ERR_CONN_EXIST && | |
1685 | status != CPL_ERR_ARP_MISS; | |
1686 | } | |
1687 | ||
793dad94 VP |
1688 | #define ACT_OPEN_RETRY_COUNT 2 |
1689 | ||
830662f6 VP |
1690 | static int import_ep(struct c4iw_ep *ep, int iptype, __u8 *peer_ip, |
1691 | struct dst_entry *dst, struct c4iw_dev *cdev, | |
1692 | bool clear_mpa_v1) | |
1693 | { | |
1694 | struct neighbour *n; | |
1695 | int err, step; | |
1696 | struct net_device *pdev; | |
1697 | ||
1698 | n = dst_neigh_lookup(dst, peer_ip); | |
1699 | if (!n) | |
1700 | return -ENODEV; | |
1701 | ||
1702 | rcu_read_lock(); | |
1703 | err = -ENOMEM; | |
1704 | if (n->dev->flags & IFF_LOOPBACK) { | |
1705 | if (iptype == 4) | |
1706 | pdev = ip_dev_find(&init_net, *(__be32 *)peer_ip); | |
1707 | else if (IS_ENABLED(CONFIG_IPV6)) | |
1708 | for_each_netdev(&init_net, pdev) { | |
1709 | if (ipv6_chk_addr(&init_net, | |
1710 | (struct in6_addr *)peer_ip, | |
1711 | pdev, 1)) | |
1712 | break; | |
1713 | } | |
1714 | else | |
1715 | pdev = NULL; | |
1716 | ||
1717 | if (!pdev) { | |
1718 | err = -ENODEV; | |
1719 | goto out; | |
1720 | } | |
1721 | ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t, | |
1722 | n, pdev, 0); | |
1723 | if (!ep->l2t) | |
1724 | goto out; | |
1725 | ep->mtu = pdev->mtu; | |
1726 | ep->tx_chan = cxgb4_port_chan(pdev); | |
1727 | ep->smac_idx = (cxgb4_port_viid(pdev) & 0x7F) << 1; | |
1728 | step = cdev->rdev.lldi.ntxq / | |
1729 | cdev->rdev.lldi.nchan; | |
1730 | ep->txq_idx = cxgb4_port_idx(pdev) * step; | |
1731 | step = cdev->rdev.lldi.nrxq / | |
1732 | cdev->rdev.lldi.nchan; | |
1733 | ep->ctrlq_idx = cxgb4_port_idx(pdev); | |
1734 | ep->rss_qid = cdev->rdev.lldi.rxq_ids[ | |
1735 | cxgb4_port_idx(pdev) * step]; | |
1736 | dev_put(pdev); | |
1737 | } else { | |
1738 | pdev = get_real_dev(n->dev); | |
1739 | ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t, | |
1740 | n, pdev, 0); | |
1741 | if (!ep->l2t) | |
1742 | goto out; | |
1743 | ep->mtu = dst_mtu(dst); | |
1744 | ep->tx_chan = cxgb4_port_chan(n->dev); | |
1745 | ep->smac_idx = (cxgb4_port_viid(n->dev) & 0x7F) << 1; | |
1746 | step = cdev->rdev.lldi.ntxq / | |
1747 | cdev->rdev.lldi.nchan; | |
1748 | ep->txq_idx = cxgb4_port_idx(n->dev) * step; | |
1749 | ep->ctrlq_idx = cxgb4_port_idx(n->dev); | |
1750 | step = cdev->rdev.lldi.nrxq / | |
1751 | cdev->rdev.lldi.nchan; | |
1752 | ep->rss_qid = cdev->rdev.lldi.rxq_ids[ | |
1753 | cxgb4_port_idx(n->dev) * step]; | |
1754 | ||
1755 | if (clear_mpa_v1) { | |
1756 | ep->retry_with_mpa_v1 = 0; | |
1757 | ep->tried_with_mpa_v1 = 0; | |
1758 | } | |
1759 | } | |
1760 | err = 0; | |
1761 | out: | |
1762 | rcu_read_unlock(); | |
1763 | ||
1764 | neigh_release(n); | |
1765 | ||
1766 | return err; | |
1767 | } | |
1768 | ||
793dad94 VP |
1769 | static int c4iw_reconnect(struct c4iw_ep *ep) |
1770 | { | |
1771 | int err = 0; | |
24d44a39 SW |
1772 | struct sockaddr_in *laddr = (struct sockaddr_in *) |
1773 | &ep->com.cm_id->local_addr; | |
1774 | struct sockaddr_in *raddr = (struct sockaddr_in *) | |
1775 | &ep->com.cm_id->remote_addr; | |
830662f6 VP |
1776 | struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *) |
1777 | &ep->com.cm_id->local_addr; | |
1778 | struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *) | |
1779 | &ep->com.cm_id->remote_addr; | |
1780 | int iptype; | |
1781 | __u8 *ra; | |
793dad94 VP |
1782 | |
1783 | PDBG("%s qp %p cm_id %p\n", __func__, ep->com.qp, ep->com.cm_id); | |
1784 | init_timer(&ep->timer); | |
1785 | ||
1786 | /* | |
1787 | * Allocate an active TID to initiate a TCP connection. | |
1788 | */ | |
1789 | ep->atid = cxgb4_alloc_atid(ep->com.dev->rdev.lldi.tids, ep); | |
1790 | if (ep->atid == -1) { | |
1791 | pr_err("%s - cannot alloc atid.\n", __func__); | |
1792 | err = -ENOMEM; | |
1793 | goto fail2; | |
1794 | } | |
1795 | insert_handle(ep->com.dev, &ep->com.dev->atid_idr, ep, ep->atid); | |
1796 | ||
1797 | /* find a route */ | |
830662f6 VP |
1798 | if (ep->com.cm_id->local_addr.ss_family == AF_INET) { |
1799 | ep->dst = find_route(ep->com.dev, laddr->sin_addr.s_addr, | |
1800 | raddr->sin_addr.s_addr, laddr->sin_port, | |
1801 | raddr->sin_port, 0); | |
1802 | iptype = 4; | |
1803 | ra = (__u8 *)&raddr->sin_addr; | |
1804 | } else { | |
1805 | ep->dst = find_route6(ep->com.dev, laddr6->sin6_addr.s6_addr, | |
1806 | raddr6->sin6_addr.s6_addr, | |
1807 | laddr6->sin6_port, raddr6->sin6_port, 0, | |
1808 | raddr6->sin6_scope_id); | |
1809 | iptype = 6; | |
1810 | ra = (__u8 *)&raddr6->sin6_addr; | |
1811 | } | |
1812 | if (!ep->dst) { | |
793dad94 VP |
1813 | pr_err("%s - cannot find route.\n", __func__); |
1814 | err = -EHOSTUNREACH; | |
1815 | goto fail3; | |
1816 | } | |
830662f6 VP |
1817 | err = import_ep(ep, iptype, ra, ep->dst, ep->com.dev, false); |
1818 | if (err) { | |
793dad94 | 1819 | pr_err("%s - cannot alloc l2e.\n", __func__); |
793dad94 VP |
1820 | goto fail4; |
1821 | } | |
1822 | ||
1823 | PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n", | |
1824 | __func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid, | |
1825 | ep->l2t->idx); | |
1826 | ||
1827 | state_set(&ep->com, CONNECTING); | |
1828 | ep->tos = 0; | |
1829 | ||
1830 | /* send connect request to rnic */ | |
1831 | err = send_connect(ep); | |
1832 | if (!err) | |
1833 | goto out; | |
1834 | ||
1835 | cxgb4_l2t_release(ep->l2t); | |
1836 | fail4: | |
1837 | dst_release(ep->dst); | |
1838 | fail3: | |
1839 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid); | |
1840 | cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid); | |
1841 | fail2: | |
1842 | /* | |
1843 | * remember to send notification to upper layer. | |
1844 | * We are in here so the upper layer is not aware that this is | |
1845 | * re-connect attempt and so, upper layer is still waiting for | |
1846 | * response of 1st connect request. | |
1847 | */ | |
1848 | connect_reply_upcall(ep, -ECONNRESET); | |
1849 | c4iw_put_ep(&ep->com); | |
1850 | out: | |
1851 | return err; | |
1852 | } | |
1853 | ||
cfdda9d7 SW |
1854 | static int act_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb) |
1855 | { | |
1856 | struct c4iw_ep *ep; | |
1857 | struct cpl_act_open_rpl *rpl = cplhdr(skb); | |
1858 | unsigned int atid = GET_TID_TID(GET_AOPEN_ATID( | |
1859 | ntohl(rpl->atid_status))); | |
1860 | struct tid_info *t = dev->rdev.lldi.tids; | |
1861 | int status = GET_AOPEN_STATUS(ntohl(rpl->atid_status)); | |
830662f6 VP |
1862 | struct sockaddr_in *la; |
1863 | struct sockaddr_in *ra; | |
1864 | struct sockaddr_in6 *la6; | |
1865 | struct sockaddr_in6 *ra6; | |
cfdda9d7 SW |
1866 | |
1867 | ep = lookup_atid(t, atid); | |
830662f6 VP |
1868 | la = (struct sockaddr_in *)&ep->com.local_addr; |
1869 | ra = (struct sockaddr_in *)&ep->com.remote_addr; | |
1870 | la6 = (struct sockaddr_in6 *)&ep->com.local_addr; | |
1871 | ra6 = (struct sockaddr_in6 *)&ep->com.remote_addr; | |
cfdda9d7 SW |
1872 | |
1873 | PDBG("%s ep %p atid %u status %u errno %d\n", __func__, ep, atid, | |
1874 | status, status2errno(status)); | |
1875 | ||
1876 | if (status == CPL_ERR_RTX_NEG_ADVICE) { | |
1877 | printk(KERN_WARNING MOD "Connection problems for atid %u\n", | |
1878 | atid); | |
1879 | return 0; | |
1880 | } | |
1881 | ||
793dad94 VP |
1882 | set_bit(ACT_OPEN_RPL, &ep->com.history); |
1883 | ||
d716a2a0 VP |
1884 | /* |
1885 | * Log interesting failures. | |
1886 | */ | |
1887 | switch (status) { | |
1888 | case CPL_ERR_CONN_RESET: | |
1889 | case CPL_ERR_CONN_TIMEDOUT: | |
1890 | break; | |
5be78ee9 | 1891 | case CPL_ERR_TCAM_FULL: |
830662f6 | 1892 | mutex_lock(&dev->rdev.stats.lock); |
3b174d94 | 1893 | dev->rdev.stats.tcam_full++; |
830662f6 VP |
1894 | mutex_unlock(&dev->rdev.stats.lock); |
1895 | if (ep->com.local_addr.ss_family == AF_INET && | |
1896 | dev->rdev.lldi.enable_fw_ofld_conn) { | |
793dad94 VP |
1897 | send_fw_act_open_req(ep, |
1898 | GET_TID_TID(GET_AOPEN_ATID( | |
1899 | ntohl(rpl->atid_status)))); | |
1900 | return 0; | |
1901 | } | |
1902 | break; | |
1903 | case CPL_ERR_CONN_EXIST: | |
1904 | if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) { | |
1905 | set_bit(ACT_RETRY_INUSE, &ep->com.history); | |
1906 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, | |
1907 | atid); | |
1908 | cxgb4_free_atid(t, atid); | |
1909 | dst_release(ep->dst); | |
1910 | cxgb4_l2t_release(ep->l2t); | |
1911 | c4iw_reconnect(ep); | |
1912 | return 0; | |
1913 | } | |
5be78ee9 | 1914 | break; |
d716a2a0 | 1915 | default: |
830662f6 VP |
1916 | if (ep->com.local_addr.ss_family == AF_INET) { |
1917 | pr_info("Active open failure - atid %u status %u errno %d %pI4:%u->%pI4:%u\n", | |
1918 | atid, status, status2errno(status), | |
1919 | &la->sin_addr.s_addr, ntohs(la->sin_port), | |
1920 | &ra->sin_addr.s_addr, ntohs(ra->sin_port)); | |
1921 | } else { | |
1922 | pr_info("Active open failure - atid %u status %u errno %d %pI6:%u->%pI6:%u\n", | |
1923 | atid, status, status2errno(status), | |
1924 | la6->sin6_addr.s6_addr, ntohs(la6->sin6_port), | |
1925 | ra6->sin6_addr.s6_addr, ntohs(ra6->sin6_port)); | |
1926 | } | |
d716a2a0 VP |
1927 | break; |
1928 | } | |
1929 | ||
cfdda9d7 SW |
1930 | connect_reply_upcall(ep, status2errno(status)); |
1931 | state_set(&ep->com, DEAD); | |
1932 | ||
1933 | if (status && act_open_has_tid(status)) | |
1934 | cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, GET_TID(rpl)); | |
1935 | ||
793dad94 | 1936 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, atid); |
cfdda9d7 SW |
1937 | cxgb4_free_atid(t, atid); |
1938 | dst_release(ep->dst); | |
1939 | cxgb4_l2t_release(ep->l2t); | |
1940 | c4iw_put_ep(&ep->com); | |
1941 | ||
1942 | return 0; | |
1943 | } | |
1944 | ||
1945 | static int pass_open_rpl(struct c4iw_dev *dev, struct sk_buff *skb) | |
1946 | { | |
1947 | struct cpl_pass_open_rpl *rpl = cplhdr(skb); | |
1948 | struct tid_info *t = dev->rdev.lldi.tids; | |
1949 | unsigned int stid = GET_TID(rpl); | |
1950 | struct c4iw_listen_ep *ep = lookup_stid(t, stid); | |
1951 | ||
1952 | if (!ep) { | |
1cab775c VP |
1953 | PDBG("%s stid %d lookup failure!\n", __func__, stid); |
1954 | goto out; | |
cfdda9d7 SW |
1955 | } |
1956 | PDBG("%s ep %p status %d error %d\n", __func__, ep, | |
1957 | rpl->status, status2errno(rpl->status)); | |
d9594d99 | 1958 | c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status)); |
cfdda9d7 | 1959 | |
1cab775c | 1960 | out: |
cfdda9d7 SW |
1961 | return 0; |
1962 | } | |
1963 | ||
cfdda9d7 SW |
1964 | static int close_listsrv_rpl(struct c4iw_dev *dev, struct sk_buff *skb) |
1965 | { | |
1966 | struct cpl_close_listsvr_rpl *rpl = cplhdr(skb); | |
1967 | struct tid_info *t = dev->rdev.lldi.tids; | |
1968 | unsigned int stid = GET_TID(rpl); | |
1969 | struct c4iw_listen_ep *ep = lookup_stid(t, stid); | |
1970 | ||
1971 | PDBG("%s ep %p\n", __func__, ep); | |
d9594d99 | 1972 | c4iw_wake_up(&ep->com.wr_wait, status2errno(rpl->status)); |
cfdda9d7 SW |
1973 | return 0; |
1974 | } | |
1975 | ||
830662f6 | 1976 | static void accept_cr(struct c4iw_ep *ep, struct sk_buff *skb, |
cfdda9d7 SW |
1977 | struct cpl_pass_accept_req *req) |
1978 | { | |
1979 | struct cpl_pass_accept_rpl *rpl; | |
1980 | unsigned int mtu_idx; | |
1981 | u64 opt0; | |
1982 | u32 opt2; | |
1983 | int wscale; | |
1984 | ||
1985 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
1986 | BUG_ON(skb_cloned(skb)); | |
1987 | skb_trim(skb, sizeof(*rpl)); | |
1988 | skb_get(skb); | |
1989 | cxgb4_best_mtu(ep->com.dev->rdev.lldi.mtus, ep->mtu, &mtu_idx); | |
1990 | wscale = compute_wscale(rcv_win); | |
5be78ee9 VP |
1991 | opt0 = (nocong ? NO_CONG(1) : 0) | |
1992 | KEEP_ALIVE(1) | | |
ba6d3925 | 1993 | DELACK(1) | |
cfdda9d7 SW |
1994 | WND_SCALE(wscale) | |
1995 | MSS_IDX(mtu_idx) | | |
1996 | L2T_IDX(ep->l2t->idx) | | |
1997 | TX_CHAN(ep->tx_chan) | | |
1998 | SMAC_SEL(ep->smac_idx) | | |
5be78ee9 | 1999 | DSCP(ep->tos >> 2) | |
b48f3b9c | 2000 | ULP_MODE(ULP_MODE_TCPDDP) | |
cfdda9d7 SW |
2001 | RCV_BUFSIZ(rcv_win>>10); |
2002 | opt2 = RX_CHANNEL(0) | | |
2003 | RSS_QUEUE_VALID | RSS_QUEUE(ep->rss_qid); | |
2004 | ||
2005 | if (enable_tcp_timestamps && req->tcpopt.tstamp) | |
2006 | opt2 |= TSTAMPS_EN(1); | |
2007 | if (enable_tcp_sack && req->tcpopt.sack) | |
2008 | opt2 |= SACK_EN(1); | |
2009 | if (wscale && enable_tcp_window_scaling) | |
2010 | opt2 |= WND_SCALE_EN(1); | |
5be78ee9 VP |
2011 | if (enable_ecn) { |
2012 | const struct tcphdr *tcph; | |
2013 | u32 hlen = ntohl(req->hdr_len); | |
2014 | ||
2015 | tcph = (const void *)(req + 1) + G_ETH_HDR_LEN(hlen) + | |
2016 | G_IP_HDR_LEN(hlen); | |
2017 | if (tcph->ece && tcph->cwr) | |
2018 | opt2 |= CCTRL_ECN(1); | |
2019 | } | |
cfdda9d7 SW |
2020 | |
2021 | rpl = cplhdr(skb); | |
2022 | INIT_TP_WR(rpl, ep->hwtid); | |
2023 | OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_PASS_ACCEPT_RPL, | |
2024 | ep->hwtid)); | |
2025 | rpl->opt0 = cpu_to_be64(opt0); | |
2026 | rpl->opt2 = cpu_to_be32(opt2); | |
d4f1a5c6 | 2027 | set_wr_txq(skb, CPL_PRIORITY_SETUP, ep->ctrlq_idx); |
cfdda9d7 SW |
2028 | c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t); |
2029 | ||
2030 | return; | |
2031 | } | |
2032 | ||
830662f6 | 2033 | static void reject_cr(struct c4iw_dev *dev, u32 hwtid, struct sk_buff *skb) |
cfdda9d7 | 2034 | { |
830662f6 | 2035 | PDBG("%s c4iw_dev %p tid %u\n", __func__, dev, hwtid); |
cfdda9d7 SW |
2036 | BUG_ON(skb_cloned(skb)); |
2037 | skb_trim(skb, sizeof(struct cpl_tid_release)); | |
2038 | skb_get(skb); | |
2039 | release_tid(&dev->rdev, hwtid, skb); | |
2040 | return; | |
2041 | } | |
2042 | ||
830662f6 VP |
2043 | static void get_4tuple(struct cpl_pass_accept_req *req, int *iptype, |
2044 | __u8 *local_ip, __u8 *peer_ip, | |
cfdda9d7 SW |
2045 | __be16 *local_port, __be16 *peer_port) |
2046 | { | |
2047 | int eth_len = G_ETH_HDR_LEN(be32_to_cpu(req->hdr_len)); | |
2048 | int ip_len = G_IP_HDR_LEN(be32_to_cpu(req->hdr_len)); | |
2049 | struct iphdr *ip = (struct iphdr *)((u8 *)(req + 1) + eth_len); | |
830662f6 | 2050 | struct ipv6hdr *ip6 = (struct ipv6hdr *)((u8 *)(req + 1) + eth_len); |
cfdda9d7 SW |
2051 | struct tcphdr *tcp = (struct tcphdr *) |
2052 | ((u8 *)(req + 1) + eth_len + ip_len); | |
2053 | ||
830662f6 VP |
2054 | if (ip->version == 4) { |
2055 | PDBG("%s saddr 0x%x daddr 0x%x sport %u dport %u\n", __func__, | |
2056 | ntohl(ip->saddr), ntohl(ip->daddr), ntohs(tcp->source), | |
2057 | ntohs(tcp->dest)); | |
2058 | *iptype = 4; | |
2059 | memcpy(peer_ip, &ip->saddr, 4); | |
2060 | memcpy(local_ip, &ip->daddr, 4); | |
2061 | } else { | |
2062 | PDBG("%s saddr %pI6 daddr %pI6 sport %u dport %u\n", __func__, | |
2063 | ip6->saddr.s6_addr, ip6->daddr.s6_addr, ntohs(tcp->source), | |
2064 | ntohs(tcp->dest)); | |
2065 | *iptype = 6; | |
2066 | memcpy(peer_ip, ip6->saddr.s6_addr, 16); | |
2067 | memcpy(local_ip, ip6->daddr.s6_addr, 16); | |
2068 | } | |
cfdda9d7 SW |
2069 | *peer_port = tcp->source; |
2070 | *local_port = tcp->dest; | |
2071 | ||
2072 | return; | |
2073 | } | |
2074 | ||
2075 | static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb) | |
2076 | { | |
793dad94 | 2077 | struct c4iw_ep *child_ep = NULL, *parent_ep; |
cfdda9d7 SW |
2078 | struct cpl_pass_accept_req *req = cplhdr(skb); |
2079 | unsigned int stid = GET_POPEN_TID(ntohl(req->tos_stid)); | |
2080 | struct tid_info *t = dev->rdev.lldi.tids; | |
2081 | unsigned int hwtid = GET_TID(req); | |
2082 | struct dst_entry *dst; | |
830662f6 | 2083 | __u8 local_ip[16], peer_ip[16]; |
cfdda9d7 | 2084 | __be16 local_port, peer_port; |
3786cf18 | 2085 | int err; |
1cab775c | 2086 | u16 peer_mss = ntohs(req->tcpopt.mss); |
830662f6 | 2087 | int iptype; |
cfdda9d7 SW |
2088 | |
2089 | parent_ep = lookup_stid(t, stid); | |
1cab775c VP |
2090 | if (!parent_ep) { |
2091 | PDBG("%s connect request on invalid stid %d\n", __func__, stid); | |
2092 | goto reject; | |
2093 | } | |
1cab775c | 2094 | |
cfdda9d7 SW |
2095 | if (state_read(&parent_ep->com) != LISTEN) { |
2096 | printk(KERN_ERR "%s - listening ep not in LISTEN\n", | |
2097 | __func__); | |
2098 | goto reject; | |
2099 | } | |
2100 | ||
830662f6 VP |
2101 | get_4tuple(req, &iptype, local_ip, peer_ip, &local_port, &peer_port); |
2102 | ||
cfdda9d7 | 2103 | /* Find output route */ |
830662f6 VP |
2104 | if (iptype == 4) { |
2105 | PDBG("%s parent ep %p hwtid %u laddr %pI4 raddr %pI4 lport %d rport %d peer_mss %d\n" | |
2106 | , __func__, parent_ep, hwtid, | |
2107 | local_ip, peer_ip, ntohs(local_port), | |
2108 | ntohs(peer_port), peer_mss); | |
2109 | dst = find_route(dev, *(__be32 *)local_ip, *(__be32 *)peer_ip, | |
2110 | local_port, peer_port, | |
2111 | GET_POPEN_TOS(ntohl(req->tos_stid))); | |
2112 | } else { | |
2113 | PDBG("%s parent ep %p hwtid %u laddr %pI6 raddr %pI6 lport %d rport %d peer_mss %d\n" | |
2114 | , __func__, parent_ep, hwtid, | |
2115 | local_ip, peer_ip, ntohs(local_port), | |
2116 | ntohs(peer_port), peer_mss); | |
2117 | dst = find_route6(dev, local_ip, peer_ip, local_port, peer_port, | |
2118 | PASS_OPEN_TOS(ntohl(req->tos_stid)), | |
2119 | ((struct sockaddr_in6 *) | |
2120 | &parent_ep->com.local_addr)->sin6_scope_id); | |
2121 | } | |
2122 | if (!dst) { | |
cfdda9d7 SW |
2123 | printk(KERN_ERR MOD "%s - failed to find dst entry!\n", |
2124 | __func__); | |
2125 | goto reject; | |
2126 | } | |
3786cf18 DM |
2127 | |
2128 | child_ep = alloc_ep(sizeof(*child_ep), GFP_KERNEL); | |
2129 | if (!child_ep) { | |
2130 | printk(KERN_ERR MOD "%s - failed to allocate ep entry!\n", | |
cfdda9d7 SW |
2131 | __func__); |
2132 | dst_release(dst); | |
2133 | goto reject; | |
2134 | } | |
2135 | ||
830662f6 | 2136 | err = import_ep(child_ep, iptype, peer_ip, dst, dev, false); |
3786cf18 DM |
2137 | if (err) { |
2138 | printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n", | |
cfdda9d7 | 2139 | __func__); |
cfdda9d7 | 2140 | dst_release(dst); |
3786cf18 | 2141 | kfree(child_ep); |
cfdda9d7 SW |
2142 | goto reject; |
2143 | } | |
3786cf18 | 2144 | |
1cab775c VP |
2145 | if (peer_mss && child_ep->mtu > (peer_mss + 40)) |
2146 | child_ep->mtu = peer_mss + 40; | |
2147 | ||
cfdda9d7 SW |
2148 | state_set(&child_ep->com, CONNECTING); |
2149 | child_ep->com.dev = dev; | |
2150 | child_ep->com.cm_id = NULL; | |
830662f6 VP |
2151 | if (iptype == 4) { |
2152 | struct sockaddr_in *sin = (struct sockaddr_in *) | |
2153 | &child_ep->com.local_addr; | |
2154 | sin->sin_family = PF_INET; | |
2155 | sin->sin_port = local_port; | |
2156 | sin->sin_addr.s_addr = *(__be32 *)local_ip; | |
2157 | sin = (struct sockaddr_in *)&child_ep->com.remote_addr; | |
2158 | sin->sin_family = PF_INET; | |
2159 | sin->sin_port = peer_port; | |
2160 | sin->sin_addr.s_addr = *(__be32 *)peer_ip; | |
2161 | } else { | |
2162 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) | |
2163 | &child_ep->com.local_addr; | |
2164 | sin6->sin6_family = PF_INET6; | |
2165 | sin6->sin6_port = local_port; | |
2166 | memcpy(sin6->sin6_addr.s6_addr, local_ip, 16); | |
2167 | sin6 = (struct sockaddr_in6 *)&child_ep->com.remote_addr; | |
2168 | sin6->sin6_family = PF_INET6; | |
2169 | sin6->sin6_port = peer_port; | |
2170 | memcpy(sin6->sin6_addr.s6_addr, peer_ip, 16); | |
2171 | } | |
cfdda9d7 SW |
2172 | c4iw_get_ep(&parent_ep->com); |
2173 | child_ep->parent_ep = parent_ep; | |
2174 | child_ep->tos = GET_POPEN_TOS(ntohl(req->tos_stid)); | |
cfdda9d7 SW |
2175 | child_ep->dst = dst; |
2176 | child_ep->hwtid = hwtid; | |
cfdda9d7 SW |
2177 | |
2178 | PDBG("%s tx_chan %u smac_idx %u rss_qid %u\n", __func__, | |
3786cf18 | 2179 | child_ep->tx_chan, child_ep->smac_idx, child_ep->rss_qid); |
cfdda9d7 SW |
2180 | |
2181 | init_timer(&child_ep->timer); | |
2182 | cxgb4_insert_tid(t, child_ep, hwtid); | |
b3de6cfe | 2183 | insert_handle(dev, &dev->hwtid_idr, child_ep, child_ep->hwtid); |
830662f6 | 2184 | accept_cr(child_ep, skb, req); |
793dad94 | 2185 | set_bit(PASS_ACCEPT_REQ, &child_ep->com.history); |
cfdda9d7 SW |
2186 | goto out; |
2187 | reject: | |
830662f6 | 2188 | reject_cr(dev, hwtid, skb); |
cfdda9d7 SW |
2189 | out: |
2190 | return 0; | |
2191 | } | |
2192 | ||
2193 | static int pass_establish(struct c4iw_dev *dev, struct sk_buff *skb) | |
2194 | { | |
2195 | struct c4iw_ep *ep; | |
2196 | struct cpl_pass_establish *req = cplhdr(skb); | |
2197 | struct tid_info *t = dev->rdev.lldi.tids; | |
2198 | unsigned int tid = GET_TID(req); | |
2199 | ||
2200 | ep = lookup_tid(t, tid); | |
2201 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
2202 | ep->snd_seq = be32_to_cpu(req->snd_isn); | |
2203 | ep->rcv_seq = be32_to_cpu(req->rcv_isn); | |
2204 | ||
1cab775c VP |
2205 | PDBG("%s ep %p hwtid %u tcp_opt 0x%02x\n", __func__, ep, tid, |
2206 | ntohs(req->tcp_opt)); | |
2207 | ||
cfdda9d7 SW |
2208 | set_emss(ep, ntohs(req->tcp_opt)); |
2209 | ||
2210 | dst_confirm(ep->dst); | |
2211 | state_set(&ep->com, MPA_REQ_WAIT); | |
2212 | start_ep_timer(ep); | |
2213 | send_flowc(ep, skb); | |
793dad94 | 2214 | set_bit(PASS_ESTAB, &ep->com.history); |
cfdda9d7 SW |
2215 | |
2216 | return 0; | |
2217 | } | |
2218 | ||
2219 | static int peer_close(struct c4iw_dev *dev, struct sk_buff *skb) | |
2220 | { | |
2221 | struct cpl_peer_close *hdr = cplhdr(skb); | |
2222 | struct c4iw_ep *ep; | |
2223 | struct c4iw_qp_attributes attrs; | |
cfdda9d7 SW |
2224 | int disconnect = 1; |
2225 | int release = 0; | |
cfdda9d7 SW |
2226 | struct tid_info *t = dev->rdev.lldi.tids; |
2227 | unsigned int tid = GET_TID(hdr); | |
8da7e7a5 | 2228 | int ret; |
cfdda9d7 SW |
2229 | |
2230 | ep = lookup_tid(t, tid); | |
2231 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
2232 | dst_confirm(ep->dst); | |
2233 | ||
793dad94 | 2234 | set_bit(PEER_CLOSE, &ep->com.history); |
2f5b48c3 | 2235 | mutex_lock(&ep->com.mutex); |
cfdda9d7 SW |
2236 | switch (ep->com.state) { |
2237 | case MPA_REQ_WAIT: | |
2238 | __state_set(&ep->com, CLOSING); | |
2239 | break; | |
2240 | case MPA_REQ_SENT: | |
2241 | __state_set(&ep->com, CLOSING); | |
2242 | connect_reply_upcall(ep, -ECONNRESET); | |
2243 | break; | |
2244 | case MPA_REQ_RCVD: | |
2245 | ||
2246 | /* | |
2247 | * We're gonna mark this puppy DEAD, but keep | |
2248 | * the reference on it until the ULP accepts or | |
2249 | * rejects the CR. Also wake up anyone waiting | |
2250 | * in rdma connection migration (see c4iw_accept_cr()). | |
2251 | */ | |
2252 | __state_set(&ep->com, CLOSING); | |
cfdda9d7 | 2253 | PDBG("waking up ep %p tid %u\n", ep, ep->hwtid); |
d9594d99 | 2254 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); |
cfdda9d7 SW |
2255 | break; |
2256 | case MPA_REP_SENT: | |
2257 | __state_set(&ep->com, CLOSING); | |
cfdda9d7 | 2258 | PDBG("waking up ep %p tid %u\n", ep, ep->hwtid); |
d9594d99 | 2259 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); |
cfdda9d7 SW |
2260 | break; |
2261 | case FPDU_MODE: | |
ca5a2202 | 2262 | start_ep_timer(ep); |
cfdda9d7 | 2263 | __state_set(&ep->com, CLOSING); |
30c95c2d | 2264 | attrs.next_state = C4IW_QP_STATE_CLOSING; |
8da7e7a5 | 2265 | ret = c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, |
30c95c2d | 2266 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); |
8da7e7a5 SW |
2267 | if (ret != -ECONNRESET) { |
2268 | peer_close_upcall(ep); | |
2269 | disconnect = 1; | |
2270 | } | |
cfdda9d7 SW |
2271 | break; |
2272 | case ABORTING: | |
2273 | disconnect = 0; | |
2274 | break; | |
2275 | case CLOSING: | |
2276 | __state_set(&ep->com, MORIBUND); | |
2277 | disconnect = 0; | |
2278 | break; | |
2279 | case MORIBUND: | |
ca5a2202 | 2280 | stop_ep_timer(ep); |
cfdda9d7 SW |
2281 | if (ep->com.cm_id && ep->com.qp) { |
2282 | attrs.next_state = C4IW_QP_STATE_IDLE; | |
2283 | c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, | |
2284 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); | |
2285 | } | |
2286 | close_complete_upcall(ep); | |
2287 | __state_set(&ep->com, DEAD); | |
2288 | release = 1; | |
2289 | disconnect = 0; | |
2290 | break; | |
2291 | case DEAD: | |
2292 | disconnect = 0; | |
2293 | break; | |
2294 | default: | |
2295 | BUG_ON(1); | |
2296 | } | |
2f5b48c3 | 2297 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
2298 | if (disconnect) |
2299 | c4iw_ep_disconnect(ep, 0, GFP_KERNEL); | |
2300 | if (release) | |
2301 | release_ep_resources(ep); | |
2302 | return 0; | |
2303 | } | |
2304 | ||
2305 | /* | |
2306 | * Returns whether an ABORT_REQ_RSS message is a negative advice. | |
2307 | */ | |
2308 | static int is_neg_adv_abort(unsigned int status) | |
2309 | { | |
2310 | return status == CPL_ERR_RTX_NEG_ADVICE || | |
2311 | status == CPL_ERR_PERSIST_NEG_ADVICE; | |
2312 | } | |
2313 | ||
2314 | static int peer_abort(struct c4iw_dev *dev, struct sk_buff *skb) | |
2315 | { | |
2316 | struct cpl_abort_req_rss *req = cplhdr(skb); | |
2317 | struct c4iw_ep *ep; | |
2318 | struct cpl_abort_rpl *rpl; | |
2319 | struct sk_buff *rpl_skb; | |
2320 | struct c4iw_qp_attributes attrs; | |
2321 | int ret; | |
2322 | int release = 0; | |
cfdda9d7 SW |
2323 | struct tid_info *t = dev->rdev.lldi.tids; |
2324 | unsigned int tid = GET_TID(req); | |
cfdda9d7 SW |
2325 | |
2326 | ep = lookup_tid(t, tid); | |
2327 | if (is_neg_adv_abort(req->status)) { | |
2328 | PDBG("%s neg_adv_abort ep %p tid %u\n", __func__, ep, | |
2329 | ep->hwtid); | |
2330 | return 0; | |
2331 | } | |
cfdda9d7 SW |
2332 | PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid, |
2333 | ep->com.state); | |
793dad94 | 2334 | set_bit(PEER_ABORT, &ep->com.history); |
2f5b48c3 SW |
2335 | |
2336 | /* | |
2337 | * Wake up any threads in rdma_init() or rdma_fini(). | |
d2fe99e8 KS |
2338 | * However, this is not needed if com state is just |
2339 | * MPA_REQ_SENT | |
2f5b48c3 | 2340 | */ |
d2fe99e8 KS |
2341 | if (ep->com.state != MPA_REQ_SENT) |
2342 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); | |
2f5b48c3 SW |
2343 | |
2344 | mutex_lock(&ep->com.mutex); | |
cfdda9d7 SW |
2345 | switch (ep->com.state) { |
2346 | case CONNECTING: | |
2347 | break; | |
2348 | case MPA_REQ_WAIT: | |
ca5a2202 | 2349 | stop_ep_timer(ep); |
cfdda9d7 SW |
2350 | break; |
2351 | case MPA_REQ_SENT: | |
ca5a2202 | 2352 | stop_ep_timer(ep); |
fe7e0a4d | 2353 | if (mpa_rev == 1 || (mpa_rev == 2 && ep->tried_with_mpa_v1)) |
d2fe99e8 KS |
2354 | connect_reply_upcall(ep, -ECONNRESET); |
2355 | else { | |
2356 | /* | |
2357 | * we just don't send notification upwards because we | |
2358 | * want to retry with mpa_v1 without upper layers even | |
2359 | * knowing it. | |
2360 | * | |
2361 | * do some housekeeping so as to re-initiate the | |
2362 | * connection | |
2363 | */ | |
2364 | PDBG("%s: mpa_rev=%d. Retrying with mpav1\n", __func__, | |
2365 | mpa_rev); | |
2366 | ep->retry_with_mpa_v1 = 1; | |
2367 | } | |
cfdda9d7 SW |
2368 | break; |
2369 | case MPA_REP_SENT: | |
cfdda9d7 SW |
2370 | break; |
2371 | case MPA_REQ_RCVD: | |
cfdda9d7 SW |
2372 | break; |
2373 | case MORIBUND: | |
2374 | case CLOSING: | |
ca5a2202 | 2375 | stop_ep_timer(ep); |
cfdda9d7 SW |
2376 | /*FALLTHROUGH*/ |
2377 | case FPDU_MODE: | |
2378 | if (ep->com.cm_id && ep->com.qp) { | |
2379 | attrs.next_state = C4IW_QP_STATE_ERROR; | |
2380 | ret = c4iw_modify_qp(ep->com.qp->rhp, | |
2381 | ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, | |
2382 | &attrs, 1); | |
2383 | if (ret) | |
2384 | printk(KERN_ERR MOD | |
2385 | "%s - qp <- error failed!\n", | |
2386 | __func__); | |
2387 | } | |
2388 | peer_abort_upcall(ep); | |
2389 | break; | |
2390 | case ABORTING: | |
2391 | break; | |
2392 | case DEAD: | |
2393 | PDBG("%s PEER_ABORT IN DEAD STATE!!!!\n", __func__); | |
2f5b48c3 | 2394 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
2395 | return 0; |
2396 | default: | |
2397 | BUG_ON(1); | |
2398 | break; | |
2399 | } | |
2400 | dst_confirm(ep->dst); | |
2401 | if (ep->com.state != ABORTING) { | |
2402 | __state_set(&ep->com, DEAD); | |
d2fe99e8 KS |
2403 | /* we don't release if we want to retry with mpa_v1 */ |
2404 | if (!ep->retry_with_mpa_v1) | |
2405 | release = 1; | |
cfdda9d7 | 2406 | } |
2f5b48c3 | 2407 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
2408 | |
2409 | rpl_skb = get_skb(skb, sizeof(*rpl), GFP_KERNEL); | |
2410 | if (!rpl_skb) { | |
2411 | printk(KERN_ERR MOD "%s - cannot allocate skb!\n", | |
2412 | __func__); | |
2413 | release = 1; | |
2414 | goto out; | |
2415 | } | |
2416 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); | |
2417 | rpl = (struct cpl_abort_rpl *) skb_put(rpl_skb, sizeof(*rpl)); | |
2418 | INIT_TP_WR(rpl, ep->hwtid); | |
2419 | OPCODE_TID(rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_RPL, ep->hwtid)); | |
2420 | rpl->cmd = CPL_ABORT_NO_RST; | |
2421 | c4iw_ofld_send(&ep->com.dev->rdev, rpl_skb); | |
2422 | out: | |
cfdda9d7 SW |
2423 | if (release) |
2424 | release_ep_resources(ep); | |
fe7e0a4d VP |
2425 | else if (ep->retry_with_mpa_v1) { |
2426 | remove_handle(ep->com.dev, &ep->com.dev->hwtid_idr, ep->hwtid); | |
d2fe99e8 KS |
2427 | cxgb4_remove_tid(ep->com.dev->rdev.lldi.tids, 0, ep->hwtid); |
2428 | dst_release(ep->dst); | |
2429 | cxgb4_l2t_release(ep->l2t); | |
2430 | c4iw_reconnect(ep); | |
2431 | } | |
2432 | ||
cfdda9d7 SW |
2433 | return 0; |
2434 | } | |
2435 | ||
2436 | static int close_con_rpl(struct c4iw_dev *dev, struct sk_buff *skb) | |
2437 | { | |
2438 | struct c4iw_ep *ep; | |
2439 | struct c4iw_qp_attributes attrs; | |
2440 | struct cpl_close_con_rpl *rpl = cplhdr(skb); | |
cfdda9d7 SW |
2441 | int release = 0; |
2442 | struct tid_info *t = dev->rdev.lldi.tids; | |
2443 | unsigned int tid = GET_TID(rpl); | |
cfdda9d7 SW |
2444 | |
2445 | ep = lookup_tid(t, tid); | |
2446 | ||
2447 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
2448 | BUG_ON(!ep); | |
2449 | ||
2450 | /* The cm_id may be null if we failed to connect */ | |
2f5b48c3 | 2451 | mutex_lock(&ep->com.mutex); |
cfdda9d7 SW |
2452 | switch (ep->com.state) { |
2453 | case CLOSING: | |
2454 | __state_set(&ep->com, MORIBUND); | |
2455 | break; | |
2456 | case MORIBUND: | |
ca5a2202 | 2457 | stop_ep_timer(ep); |
cfdda9d7 SW |
2458 | if ((ep->com.cm_id) && (ep->com.qp)) { |
2459 | attrs.next_state = C4IW_QP_STATE_IDLE; | |
2460 | c4iw_modify_qp(ep->com.qp->rhp, | |
2461 | ep->com.qp, | |
2462 | C4IW_QP_ATTR_NEXT_STATE, | |
2463 | &attrs, 1); | |
2464 | } | |
2465 | close_complete_upcall(ep); | |
2466 | __state_set(&ep->com, DEAD); | |
2467 | release = 1; | |
2468 | break; | |
2469 | case ABORTING: | |
2470 | case DEAD: | |
2471 | break; | |
2472 | default: | |
2473 | BUG_ON(1); | |
2474 | break; | |
2475 | } | |
2f5b48c3 | 2476 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
2477 | if (release) |
2478 | release_ep_resources(ep); | |
2479 | return 0; | |
2480 | } | |
2481 | ||
2482 | static int terminate(struct c4iw_dev *dev, struct sk_buff *skb) | |
2483 | { | |
0e42c1f4 | 2484 | struct cpl_rdma_terminate *rpl = cplhdr(skb); |
cfdda9d7 | 2485 | struct tid_info *t = dev->rdev.lldi.tids; |
0e42c1f4 SW |
2486 | unsigned int tid = GET_TID(rpl); |
2487 | struct c4iw_ep *ep; | |
2488 | struct c4iw_qp_attributes attrs; | |
cfdda9d7 SW |
2489 | |
2490 | ep = lookup_tid(t, tid); | |
0e42c1f4 | 2491 | BUG_ON(!ep); |
cfdda9d7 | 2492 | |
30c95c2d | 2493 | if (ep && ep->com.qp) { |
0e42c1f4 SW |
2494 | printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", tid, |
2495 | ep->com.qp->wq.sq.qid); | |
2496 | attrs.next_state = C4IW_QP_STATE_TERMINATE; | |
2497 | c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp, | |
2498 | C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); | |
2499 | } else | |
30c95c2d | 2500 | printk(KERN_WARNING MOD "TERM received tid %u no ep/qp\n", tid); |
cfdda9d7 | 2501 | |
cfdda9d7 SW |
2502 | return 0; |
2503 | } | |
2504 | ||
2505 | /* | |
2506 | * Upcall from the adapter indicating data has been transmitted. | |
2507 | * For us its just the single MPA request or reply. We can now free | |
2508 | * the skb holding the mpa message. | |
2509 | */ | |
2510 | static int fw4_ack(struct c4iw_dev *dev, struct sk_buff *skb) | |
2511 | { | |
2512 | struct c4iw_ep *ep; | |
2513 | struct cpl_fw4_ack *hdr = cplhdr(skb); | |
2514 | u8 credits = hdr->credits; | |
2515 | unsigned int tid = GET_TID(hdr); | |
2516 | struct tid_info *t = dev->rdev.lldi.tids; | |
2517 | ||
2518 | ||
2519 | ep = lookup_tid(t, tid); | |
2520 | PDBG("%s ep %p tid %u credits %u\n", __func__, ep, ep->hwtid, credits); | |
2521 | if (credits == 0) { | |
aa1ad260 JP |
2522 | PDBG("%s 0 credit ack ep %p tid %u state %u\n", |
2523 | __func__, ep, ep->hwtid, state_read(&ep->com)); | |
cfdda9d7 SW |
2524 | return 0; |
2525 | } | |
2526 | ||
2527 | dst_confirm(ep->dst); | |
2528 | if (ep->mpa_skb) { | |
2529 | PDBG("%s last streaming msg ack ep %p tid %u state %u " | |
2530 | "initiator %u freeing skb\n", __func__, ep, ep->hwtid, | |
2531 | state_read(&ep->com), ep->mpa_attr.initiator ? 1 : 0); | |
2532 | kfree_skb(ep->mpa_skb); | |
2533 | ep->mpa_skb = NULL; | |
2534 | } | |
2535 | return 0; | |
2536 | } | |
2537 | ||
cfdda9d7 SW |
2538 | int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) |
2539 | { | |
2540 | int err; | |
2541 | struct c4iw_ep *ep = to_ep(cm_id); | |
2542 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
2543 | ||
2544 | if (state_read(&ep->com) == DEAD) { | |
2545 | c4iw_put_ep(&ep->com); | |
2546 | return -ECONNRESET; | |
2547 | } | |
793dad94 | 2548 | set_bit(ULP_REJECT, &ep->com.history); |
cfdda9d7 SW |
2549 | BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD); |
2550 | if (mpa_rev == 0) | |
2551 | abort_connection(ep, NULL, GFP_KERNEL); | |
2552 | else { | |
2553 | err = send_mpa_reject(ep, pdata, pdata_len); | |
2554 | err = c4iw_ep_disconnect(ep, 0, GFP_KERNEL); | |
2555 | } | |
2556 | c4iw_put_ep(&ep->com); | |
2557 | return 0; | |
2558 | } | |
2559 | ||
2560 | int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) | |
2561 | { | |
2562 | int err; | |
2563 | struct c4iw_qp_attributes attrs; | |
2564 | enum c4iw_qp_attr_mask mask; | |
2565 | struct c4iw_ep *ep = to_ep(cm_id); | |
2566 | struct c4iw_dev *h = to_c4iw_dev(cm_id->device); | |
2567 | struct c4iw_qp *qp = get_qhp(h, conn_param->qpn); | |
2568 | ||
2569 | PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid); | |
2570 | if (state_read(&ep->com) == DEAD) { | |
2571 | err = -ECONNRESET; | |
2572 | goto err; | |
2573 | } | |
2574 | ||
2575 | BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD); | |
2576 | BUG_ON(!qp); | |
2577 | ||
793dad94 | 2578 | set_bit(ULP_ACCEPT, &ep->com.history); |
be4c9bad RD |
2579 | if ((conn_param->ord > c4iw_max_read_depth) || |
2580 | (conn_param->ird > c4iw_max_read_depth)) { | |
cfdda9d7 SW |
2581 | abort_connection(ep, NULL, GFP_KERNEL); |
2582 | err = -EINVAL; | |
2583 | goto err; | |
2584 | } | |
2585 | ||
d2fe99e8 KS |
2586 | if (ep->mpa_attr.version == 2 && ep->mpa_attr.enhanced_rdma_conn) { |
2587 | if (conn_param->ord > ep->ird) { | |
2588 | ep->ird = conn_param->ird; | |
2589 | ep->ord = conn_param->ord; | |
2590 | send_mpa_reject(ep, conn_param->private_data, | |
2591 | conn_param->private_data_len); | |
2592 | abort_connection(ep, NULL, GFP_KERNEL); | |
2593 | err = -ENOMEM; | |
2594 | goto err; | |
2595 | } | |
2596 | if (conn_param->ird > ep->ord) { | |
2597 | if (!ep->ord) | |
2598 | conn_param->ird = 1; | |
2599 | else { | |
2600 | abort_connection(ep, NULL, GFP_KERNEL); | |
2601 | err = -ENOMEM; | |
2602 | goto err; | |
2603 | } | |
2604 | } | |
cfdda9d7 | 2605 | |
d2fe99e8 | 2606 | } |
cfdda9d7 SW |
2607 | ep->ird = conn_param->ird; |
2608 | ep->ord = conn_param->ord; | |
2609 | ||
d2fe99e8 KS |
2610 | if (ep->mpa_attr.version != 2) |
2611 | if (peer2peer && ep->ird == 0) | |
2612 | ep->ird = 1; | |
cfdda9d7 SW |
2613 | |
2614 | PDBG("%s %d ird %d ord %d\n", __func__, __LINE__, ep->ird, ep->ord); | |
2615 | ||
d2fe99e8 KS |
2616 | cm_id->add_ref(cm_id); |
2617 | ep->com.cm_id = cm_id; | |
2618 | ep->com.qp = qp; | |
325abead | 2619 | ref_qp(ep); |
d2fe99e8 | 2620 | |
cfdda9d7 SW |
2621 | /* bind QP to EP and move to RTS */ |
2622 | attrs.mpa_attr = ep->mpa_attr; | |
2623 | attrs.max_ird = ep->ird; | |
2624 | attrs.max_ord = ep->ord; | |
2625 | attrs.llp_stream_handle = ep; | |
2626 | attrs.next_state = C4IW_QP_STATE_RTS; | |
2627 | ||
2628 | /* bind QP and TID with INIT_WR */ | |
2629 | mask = C4IW_QP_ATTR_NEXT_STATE | | |
2630 | C4IW_QP_ATTR_LLP_STREAM_HANDLE | | |
2631 | C4IW_QP_ATTR_MPA_ATTR | | |
2632 | C4IW_QP_ATTR_MAX_IRD | | |
2633 | C4IW_QP_ATTR_MAX_ORD; | |
2634 | ||
2635 | err = c4iw_modify_qp(ep->com.qp->rhp, | |
2636 | ep->com.qp, mask, &attrs, 1); | |
2637 | if (err) | |
2638 | goto err1; | |
2639 | err = send_mpa_reply(ep, conn_param->private_data, | |
2640 | conn_param->private_data_len); | |
2641 | if (err) | |
2642 | goto err1; | |
2643 | ||
2644 | state_set(&ep->com, FPDU_MODE); | |
2645 | established_upcall(ep); | |
2646 | c4iw_put_ep(&ep->com); | |
2647 | return 0; | |
2648 | err1: | |
2649 | ep->com.cm_id = NULL; | |
cfdda9d7 SW |
2650 | cm_id->rem_ref(cm_id); |
2651 | err: | |
2652 | c4iw_put_ep(&ep->com); | |
2653 | return err; | |
2654 | } | |
2655 | ||
830662f6 VP |
2656 | static int pick_local_ipaddrs(struct c4iw_dev *dev, struct iw_cm_id *cm_id) |
2657 | { | |
2658 | struct in_device *ind; | |
2659 | int found = 0; | |
2660 | struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr; | |
2661 | struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr; | |
2662 | ||
2663 | ind = in_dev_get(dev->rdev.lldi.ports[0]); | |
2664 | if (!ind) | |
2665 | return -EADDRNOTAVAIL; | |
2666 | for_primary_ifa(ind) { | |
2667 | laddr->sin_addr.s_addr = ifa->ifa_address; | |
2668 | raddr->sin_addr.s_addr = ifa->ifa_address; | |
2669 | found = 1; | |
2670 | break; | |
2671 | } | |
2672 | endfor_ifa(ind); | |
2673 | in_dev_put(ind); | |
2674 | return found ? 0 : -EADDRNOTAVAIL; | |
2675 | } | |
2676 | ||
2677 | static int get_lladdr(struct net_device *dev, struct in6_addr *addr, | |
2678 | unsigned char banned_flags) | |
2679 | { | |
2680 | struct inet6_dev *idev; | |
2681 | int err = -EADDRNOTAVAIL; | |
2682 | ||
2683 | rcu_read_lock(); | |
2684 | idev = __in6_dev_get(dev); | |
2685 | if (idev != NULL) { | |
2686 | struct inet6_ifaddr *ifp; | |
2687 | ||
2688 | read_lock_bh(&idev->lock); | |
2689 | list_for_each_entry(ifp, &idev->addr_list, if_list) { | |
2690 | if (ifp->scope == IFA_LINK && | |
2691 | !(ifp->flags & banned_flags)) { | |
2692 | memcpy(addr, &ifp->addr, 16); | |
2693 | err = 0; | |
2694 | break; | |
2695 | } | |
2696 | } | |
2697 | read_unlock_bh(&idev->lock); | |
2698 | } | |
2699 | rcu_read_unlock(); | |
2700 | return err; | |
2701 | } | |
2702 | ||
2703 | static int pick_local_ip6addrs(struct c4iw_dev *dev, struct iw_cm_id *cm_id) | |
2704 | { | |
2705 | struct in6_addr uninitialized_var(addr); | |
2706 | struct sockaddr_in6 *la6 = (struct sockaddr_in6 *)&cm_id->local_addr; | |
2707 | struct sockaddr_in6 *ra6 = (struct sockaddr_in6 *)&cm_id->remote_addr; | |
2708 | ||
2709 | if (get_lladdr(dev->rdev.lldi.ports[0], &addr, IFA_F_TENTATIVE)) { | |
2710 | memcpy(la6->sin6_addr.s6_addr, &addr, 16); | |
2711 | memcpy(ra6->sin6_addr.s6_addr, &addr, 16); | |
2712 | return 0; | |
2713 | } | |
2714 | return -EADDRNOTAVAIL; | |
2715 | } | |
2716 | ||
cfdda9d7 SW |
2717 | int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param) |
2718 | { | |
cfdda9d7 SW |
2719 | struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); |
2720 | struct c4iw_ep *ep; | |
3786cf18 | 2721 | int err = 0; |
24d44a39 SW |
2722 | struct sockaddr_in *laddr = (struct sockaddr_in *)&cm_id->local_addr; |
2723 | struct sockaddr_in *raddr = (struct sockaddr_in *)&cm_id->remote_addr; | |
830662f6 VP |
2724 | struct sockaddr_in6 *laddr6 = (struct sockaddr_in6 *)&cm_id->local_addr; |
2725 | struct sockaddr_in6 *raddr6 = (struct sockaddr_in6 *) | |
2726 | &cm_id->remote_addr; | |
2727 | __u8 *ra; | |
2728 | int iptype; | |
cfdda9d7 | 2729 | |
be4c9bad RD |
2730 | if ((conn_param->ord > c4iw_max_read_depth) || |
2731 | (conn_param->ird > c4iw_max_read_depth)) { | |
2732 | err = -EINVAL; | |
2733 | goto out; | |
2734 | } | |
cfdda9d7 SW |
2735 | ep = alloc_ep(sizeof(*ep), GFP_KERNEL); |
2736 | if (!ep) { | |
2737 | printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); | |
2738 | err = -ENOMEM; | |
2739 | goto out; | |
2740 | } | |
2741 | init_timer(&ep->timer); | |
2742 | ep->plen = conn_param->private_data_len; | |
2743 | if (ep->plen) | |
2744 | memcpy(ep->mpa_pkt + sizeof(struct mpa_message), | |
2745 | conn_param->private_data, ep->plen); | |
2746 | ep->ird = conn_param->ird; | |
2747 | ep->ord = conn_param->ord; | |
2748 | ||
2749 | if (peer2peer && ep->ord == 0) | |
2750 | ep->ord = 1; | |
2751 | ||
2752 | cm_id->add_ref(cm_id); | |
2753 | ep->com.dev = dev; | |
2754 | ep->com.cm_id = cm_id; | |
2755 | ep->com.qp = get_qhp(dev, conn_param->qpn); | |
830662f6 VP |
2756 | if (!ep->com.qp) { |
2757 | PDBG("%s qpn 0x%x not found!\n", __func__, conn_param->qpn); | |
2758 | err = -EINVAL; | |
2759 | goto fail2; | |
2760 | } | |
325abead | 2761 | ref_qp(ep); |
cfdda9d7 SW |
2762 | PDBG("%s qpn 0x%x qp %p cm_id %p\n", __func__, conn_param->qpn, |
2763 | ep->com.qp, cm_id); | |
2764 | ||
2765 | /* | |
2766 | * Allocate an active TID to initiate a TCP connection. | |
2767 | */ | |
2768 | ep->atid = cxgb4_alloc_atid(dev->rdev.lldi.tids, ep); | |
2769 | if (ep->atid == -1) { | |
2770 | printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __func__); | |
2771 | err = -ENOMEM; | |
2772 | goto fail2; | |
2773 | } | |
793dad94 | 2774 | insert_handle(dev, &dev->atid_idr, ep, ep->atid); |
cfdda9d7 | 2775 | |
830662f6 VP |
2776 | if (cm_id->remote_addr.ss_family == AF_INET) { |
2777 | iptype = 4; | |
2778 | ra = (__u8 *)&raddr->sin_addr; | |
cfdda9d7 | 2779 | |
830662f6 VP |
2780 | /* |
2781 | * Handle loopback requests to INADDR_ANY. | |
2782 | */ | |
2783 | if ((__force int)raddr->sin_addr.s_addr == INADDR_ANY) { | |
2784 | err = pick_local_ipaddrs(dev, cm_id); | |
2785 | if (err) | |
2786 | goto fail2; | |
2787 | } | |
2788 | ||
2789 | /* find a route */ | |
2790 | PDBG("%s saddr %pI4 sport 0x%x raddr %pI4 rport 0x%x\n", | |
2791 | __func__, &laddr->sin_addr, ntohs(laddr->sin_port), | |
2792 | ra, ntohs(raddr->sin_port)); | |
2793 | ep->dst = find_route(dev, laddr->sin_addr.s_addr, | |
2794 | raddr->sin_addr.s_addr, laddr->sin_port, | |
2795 | raddr->sin_port, 0); | |
2796 | } else { | |
2797 | iptype = 6; | |
2798 | ra = (__u8 *)&raddr6->sin6_addr; | |
2799 | ||
2800 | /* | |
2801 | * Handle loopback requests to INADDR_ANY. | |
2802 | */ | |
2803 | if (ipv6_addr_type(&raddr6->sin6_addr) == IPV6_ADDR_ANY) { | |
2804 | err = pick_local_ip6addrs(dev, cm_id); | |
2805 | if (err) | |
2806 | goto fail2; | |
2807 | } | |
2808 | ||
2809 | /* find a route */ | |
2810 | PDBG("%s saddr %pI6 sport 0x%x raddr %pI6 rport 0x%x\n", | |
2811 | __func__, laddr6->sin6_addr.s6_addr, | |
2812 | ntohs(laddr6->sin6_port), | |
2813 | raddr6->sin6_addr.s6_addr, ntohs(raddr6->sin6_port)); | |
2814 | ep->dst = find_route6(dev, laddr6->sin6_addr.s6_addr, | |
2815 | raddr6->sin6_addr.s6_addr, | |
2816 | laddr6->sin6_port, raddr6->sin6_port, 0, | |
2817 | raddr6->sin6_scope_id); | |
2818 | } | |
2819 | if (!ep->dst) { | |
cfdda9d7 SW |
2820 | printk(KERN_ERR MOD "%s - cannot find route.\n", __func__); |
2821 | err = -EHOSTUNREACH; | |
2822 | goto fail3; | |
2823 | } | |
cfdda9d7 | 2824 | |
830662f6 | 2825 | err = import_ep(ep, iptype, ra, ep->dst, ep->com.dev, true); |
3786cf18 | 2826 | if (err) { |
cfdda9d7 | 2827 | printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__); |
cfdda9d7 SW |
2828 | goto fail4; |
2829 | } | |
2830 | ||
2831 | PDBG("%s txq_idx %u tx_chan %u smac_idx %u rss_qid %u l2t_idx %u\n", | |
2832 | __func__, ep->txq_idx, ep->tx_chan, ep->smac_idx, ep->rss_qid, | |
2833 | ep->l2t->idx); | |
2834 | ||
2835 | state_set(&ep->com, CONNECTING); | |
2836 | ep->tos = 0; | |
24d44a39 SW |
2837 | memcpy(&ep->com.local_addr, &cm_id->local_addr, |
2838 | sizeof(ep->com.local_addr)); | |
2839 | memcpy(&ep->com.remote_addr, &cm_id->remote_addr, | |
2840 | sizeof(ep->com.remote_addr)); | |
cfdda9d7 SW |
2841 | |
2842 | /* send connect request to rnic */ | |
2843 | err = send_connect(ep); | |
2844 | if (!err) | |
2845 | goto out; | |
2846 | ||
2847 | cxgb4_l2t_release(ep->l2t); | |
2848 | fail4: | |
2849 | dst_release(ep->dst); | |
2850 | fail3: | |
793dad94 | 2851 | remove_handle(ep->com.dev, &ep->com.dev->atid_idr, ep->atid); |
cfdda9d7 SW |
2852 | cxgb4_free_atid(ep->com.dev->rdev.lldi.tids, ep->atid); |
2853 | fail2: | |
2854 | cm_id->rem_ref(cm_id); | |
2855 | c4iw_put_ep(&ep->com); | |
2856 | out: | |
2857 | return err; | |
2858 | } | |
2859 | ||
830662f6 VP |
2860 | static int create_server6(struct c4iw_dev *dev, struct c4iw_listen_ep *ep) |
2861 | { | |
2862 | int err; | |
2863 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&ep->com.local_addr; | |
2864 | ||
2865 | c4iw_init_wr_wait(&ep->com.wr_wait); | |
2866 | err = cxgb4_create_server6(ep->com.dev->rdev.lldi.ports[0], | |
2867 | ep->stid, &sin6->sin6_addr, | |
2868 | sin6->sin6_port, | |
2869 | ep->com.dev->rdev.lldi.rxq_ids[0]); | |
2870 | if (!err) | |
2871 | err = c4iw_wait_for_reply(&ep->com.dev->rdev, | |
2872 | &ep->com.wr_wait, | |
2873 | 0, 0, __func__); | |
2874 | if (err) | |
2875 | pr_err("cxgb4_create_server6/filter failed err %d stid %d laddr %pI6 lport %d\n", | |
2876 | err, ep->stid, | |
2877 | sin6->sin6_addr.s6_addr, ntohs(sin6->sin6_port)); | |
2878 | return err; | |
2879 | } | |
2880 | ||
2881 | static int create_server4(struct c4iw_dev *dev, struct c4iw_listen_ep *ep) | |
2882 | { | |
2883 | int err; | |
2884 | struct sockaddr_in *sin = (struct sockaddr_in *)&ep->com.local_addr; | |
2885 | ||
2886 | if (dev->rdev.lldi.enable_fw_ofld_conn) { | |
2887 | do { | |
2888 | err = cxgb4_create_server_filter( | |
2889 | ep->com.dev->rdev.lldi.ports[0], ep->stid, | |
2890 | sin->sin_addr.s_addr, sin->sin_port, 0, | |
2891 | ep->com.dev->rdev.lldi.rxq_ids[0], 0, 0); | |
2892 | if (err == -EBUSY) { | |
2893 | set_current_state(TASK_UNINTERRUPTIBLE); | |
2894 | schedule_timeout(usecs_to_jiffies(100)); | |
2895 | } | |
2896 | } while (err == -EBUSY); | |
2897 | } else { | |
2898 | c4iw_init_wr_wait(&ep->com.wr_wait); | |
2899 | err = cxgb4_create_server(ep->com.dev->rdev.lldi.ports[0], | |
2900 | ep->stid, sin->sin_addr.s_addr, sin->sin_port, | |
2901 | 0, ep->com.dev->rdev.lldi.rxq_ids[0]); | |
2902 | if (!err) | |
2903 | err = c4iw_wait_for_reply(&ep->com.dev->rdev, | |
2904 | &ep->com.wr_wait, | |
2905 | 0, 0, __func__); | |
2906 | } | |
2907 | if (err) | |
2908 | pr_err("cxgb4_create_server/filter failed err %d stid %d laddr %pI4 lport %d\n" | |
2909 | , err, ep->stid, | |
2910 | &sin->sin_addr, ntohs(sin->sin_port)); | |
2911 | return err; | |
2912 | } | |
2913 | ||
cfdda9d7 SW |
2914 | int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog) |
2915 | { | |
2916 | int err = 0; | |
2917 | struct c4iw_dev *dev = to_c4iw_dev(cm_id->device); | |
2918 | struct c4iw_listen_ep *ep; | |
2919 | ||
cfdda9d7 SW |
2920 | might_sleep(); |
2921 | ||
2922 | ep = alloc_ep(sizeof(*ep), GFP_KERNEL); | |
2923 | if (!ep) { | |
2924 | printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__); | |
2925 | err = -ENOMEM; | |
2926 | goto fail1; | |
2927 | } | |
2928 | PDBG("%s ep %p\n", __func__, ep); | |
2929 | cm_id->add_ref(cm_id); | |
2930 | ep->com.cm_id = cm_id; | |
2931 | ep->com.dev = dev; | |
2932 | ep->backlog = backlog; | |
24d44a39 SW |
2933 | memcpy(&ep->com.local_addr, &cm_id->local_addr, |
2934 | sizeof(ep->com.local_addr)); | |
cfdda9d7 SW |
2935 | |
2936 | /* | |
2937 | * Allocate a server TID. | |
2938 | */ | |
1cab775c | 2939 | if (dev->rdev.lldi.enable_fw_ofld_conn) |
830662f6 VP |
2940 | ep->stid = cxgb4_alloc_sftid(dev->rdev.lldi.tids, |
2941 | cm_id->local_addr.ss_family, ep); | |
1cab775c | 2942 | else |
830662f6 VP |
2943 | ep->stid = cxgb4_alloc_stid(dev->rdev.lldi.tids, |
2944 | cm_id->local_addr.ss_family, ep); | |
1cab775c | 2945 | |
cfdda9d7 | 2946 | if (ep->stid == -1) { |
be4c9bad | 2947 | printk(KERN_ERR MOD "%s - cannot alloc stid.\n", __func__); |
cfdda9d7 SW |
2948 | err = -ENOMEM; |
2949 | goto fail2; | |
2950 | } | |
793dad94 | 2951 | insert_handle(dev, &dev->stid_idr, ep, ep->stid); |
cfdda9d7 | 2952 | state_set(&ep->com, LISTEN); |
830662f6 VP |
2953 | if (ep->com.local_addr.ss_family == AF_INET) |
2954 | err = create_server4(dev, ep); | |
2955 | else | |
2956 | err = create_server6(dev, ep); | |
cfdda9d7 SW |
2957 | if (!err) { |
2958 | cm_id->provider_data = ep; | |
2959 | goto out; | |
2960 | } | |
830662f6 VP |
2961 | cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid, |
2962 | ep->com.local_addr.ss_family); | |
cfdda9d7 SW |
2963 | fail2: |
2964 | cm_id->rem_ref(cm_id); | |
2965 | c4iw_put_ep(&ep->com); | |
2966 | fail1: | |
2967 | out: | |
2968 | return err; | |
2969 | } | |
2970 | ||
2971 | int c4iw_destroy_listen(struct iw_cm_id *cm_id) | |
2972 | { | |
2973 | int err; | |
2974 | struct c4iw_listen_ep *ep = to_listen_ep(cm_id); | |
2975 | ||
2976 | PDBG("%s ep %p\n", __func__, ep); | |
2977 | ||
2978 | might_sleep(); | |
2979 | state_set(&ep->com, DEAD); | |
830662f6 VP |
2980 | if (ep->com.dev->rdev.lldi.enable_fw_ofld_conn && |
2981 | ep->com.local_addr.ss_family == AF_INET) { | |
1cab775c VP |
2982 | err = cxgb4_remove_server_filter( |
2983 | ep->com.dev->rdev.lldi.ports[0], ep->stid, | |
2984 | ep->com.dev->rdev.lldi.rxq_ids[0], 0); | |
2985 | } else { | |
2986 | c4iw_init_wr_wait(&ep->com.wr_wait); | |
830662f6 VP |
2987 | err = cxgb4_remove_server( |
2988 | ep->com.dev->rdev.lldi.ports[0], ep->stid, | |
2989 | ep->com.dev->rdev.lldi.rxq_ids[0], 0); | |
1cab775c VP |
2990 | if (err) |
2991 | goto done; | |
2992 | err = c4iw_wait_for_reply(&ep->com.dev->rdev, &ep->com.wr_wait, | |
2993 | 0, 0, __func__); | |
2994 | } | |
793dad94 | 2995 | remove_handle(ep->com.dev, &ep->com.dev->stid_idr, ep->stid); |
830662f6 VP |
2996 | cxgb4_free_stid(ep->com.dev->rdev.lldi.tids, ep->stid, |
2997 | ep->com.local_addr.ss_family); | |
cfdda9d7 | 2998 | done: |
cfdda9d7 SW |
2999 | cm_id->rem_ref(cm_id); |
3000 | c4iw_put_ep(&ep->com); | |
3001 | return err; | |
3002 | } | |
3003 | ||
3004 | int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp) | |
3005 | { | |
3006 | int ret = 0; | |
cfdda9d7 SW |
3007 | int close = 0; |
3008 | int fatal = 0; | |
3009 | struct c4iw_rdev *rdev; | |
cfdda9d7 | 3010 | |
2f5b48c3 | 3011 | mutex_lock(&ep->com.mutex); |
cfdda9d7 SW |
3012 | |
3013 | PDBG("%s ep %p state %s, abrupt %d\n", __func__, ep, | |
3014 | states[ep->com.state], abrupt); | |
3015 | ||
3016 | rdev = &ep->com.dev->rdev; | |
3017 | if (c4iw_fatal_error(rdev)) { | |
3018 | fatal = 1; | |
3019 | close_complete_upcall(ep); | |
3020 | ep->com.state = DEAD; | |
3021 | } | |
3022 | switch (ep->com.state) { | |
3023 | case MPA_REQ_WAIT: | |
3024 | case MPA_REQ_SENT: | |
3025 | case MPA_REQ_RCVD: | |
3026 | case MPA_REP_SENT: | |
3027 | case FPDU_MODE: | |
3028 | close = 1; | |
3029 | if (abrupt) | |
3030 | ep->com.state = ABORTING; | |
3031 | else { | |
3032 | ep->com.state = CLOSING; | |
ca5a2202 | 3033 | start_ep_timer(ep); |
cfdda9d7 SW |
3034 | } |
3035 | set_bit(CLOSE_SENT, &ep->com.flags); | |
3036 | break; | |
3037 | case CLOSING: | |
3038 | if (!test_and_set_bit(CLOSE_SENT, &ep->com.flags)) { | |
3039 | close = 1; | |
3040 | if (abrupt) { | |
ca5a2202 | 3041 | stop_ep_timer(ep); |
cfdda9d7 SW |
3042 | ep->com.state = ABORTING; |
3043 | } else | |
3044 | ep->com.state = MORIBUND; | |
3045 | } | |
3046 | break; | |
3047 | case MORIBUND: | |
3048 | case ABORTING: | |
3049 | case DEAD: | |
3050 | PDBG("%s ignoring disconnect ep %p state %u\n", | |
3051 | __func__, ep, ep->com.state); | |
3052 | break; | |
3053 | default: | |
3054 | BUG(); | |
3055 | break; | |
3056 | } | |
3057 | ||
cfdda9d7 | 3058 | if (close) { |
8da7e7a5 | 3059 | if (abrupt) { |
793dad94 | 3060 | set_bit(EP_DISC_ABORT, &ep->com.history); |
8da7e7a5 SW |
3061 | close_complete_upcall(ep); |
3062 | ret = send_abort(ep, NULL, gfp); | |
793dad94 VP |
3063 | } else { |
3064 | set_bit(EP_DISC_CLOSE, &ep->com.history); | |
cfdda9d7 | 3065 | ret = send_halfclose(ep, gfp); |
793dad94 | 3066 | } |
cfdda9d7 SW |
3067 | if (ret) |
3068 | fatal = 1; | |
3069 | } | |
8da7e7a5 | 3070 | mutex_unlock(&ep->com.mutex); |
cfdda9d7 SW |
3071 | if (fatal) |
3072 | release_ep_resources(ep); | |
3073 | return ret; | |
3074 | } | |
3075 | ||
1cab775c VP |
3076 | static void active_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb, |
3077 | struct cpl_fw6_msg_ofld_connection_wr_rpl *req) | |
3078 | { | |
3079 | struct c4iw_ep *ep; | |
793dad94 | 3080 | int atid = be32_to_cpu(req->tid); |
1cab775c | 3081 | |
ef5d6355 VP |
3082 | ep = (struct c4iw_ep *)lookup_atid(dev->rdev.lldi.tids, |
3083 | (__force u32) req->tid); | |
1cab775c VP |
3084 | if (!ep) |
3085 | return; | |
3086 | ||
3087 | switch (req->retval) { | |
3088 | case FW_ENOMEM: | |
793dad94 VP |
3089 | set_bit(ACT_RETRY_NOMEM, &ep->com.history); |
3090 | if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) { | |
3091 | send_fw_act_open_req(ep, atid); | |
3092 | return; | |
3093 | } | |
1cab775c | 3094 | case FW_EADDRINUSE: |
793dad94 VP |
3095 | set_bit(ACT_RETRY_INUSE, &ep->com.history); |
3096 | if (ep->retry_count++ < ACT_OPEN_RETRY_COUNT) { | |
3097 | send_fw_act_open_req(ep, atid); | |
3098 | return; | |
3099 | } | |
1cab775c VP |
3100 | break; |
3101 | default: | |
3102 | pr_info("%s unexpected ofld conn wr retval %d\n", | |
3103 | __func__, req->retval); | |
3104 | break; | |
3105 | } | |
793dad94 VP |
3106 | pr_err("active ofld_connect_wr failure %d atid %d\n", |
3107 | req->retval, atid); | |
3108 | mutex_lock(&dev->rdev.stats.lock); | |
3109 | dev->rdev.stats.act_ofld_conn_fails++; | |
3110 | mutex_unlock(&dev->rdev.stats.lock); | |
1cab775c | 3111 | connect_reply_upcall(ep, status2errno(req->retval)); |
793dad94 VP |
3112 | state_set(&ep->com, DEAD); |
3113 | remove_handle(dev, &dev->atid_idr, atid); | |
3114 | cxgb4_free_atid(dev->rdev.lldi.tids, atid); | |
3115 | dst_release(ep->dst); | |
3116 | cxgb4_l2t_release(ep->l2t); | |
3117 | c4iw_put_ep(&ep->com); | |
1cab775c VP |
3118 | } |
3119 | ||
3120 | static void passive_ofld_conn_reply(struct c4iw_dev *dev, struct sk_buff *skb, | |
3121 | struct cpl_fw6_msg_ofld_connection_wr_rpl *req) | |
3122 | { | |
3123 | struct sk_buff *rpl_skb; | |
3124 | struct cpl_pass_accept_req *cpl; | |
3125 | int ret; | |
3126 | ||
710a3110 | 3127 | rpl_skb = (struct sk_buff *)(unsigned long)req->cookie; |
1cab775c VP |
3128 | BUG_ON(!rpl_skb); |
3129 | if (req->retval) { | |
3130 | PDBG("%s passive open failure %d\n", __func__, req->retval); | |
793dad94 VP |
3131 | mutex_lock(&dev->rdev.stats.lock); |
3132 | dev->rdev.stats.pas_ofld_conn_fails++; | |
3133 | mutex_unlock(&dev->rdev.stats.lock); | |
1cab775c VP |
3134 | kfree_skb(rpl_skb); |
3135 | } else { | |
3136 | cpl = (struct cpl_pass_accept_req *)cplhdr(rpl_skb); | |
3137 | OPCODE_TID(cpl) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ, | |
ef5d6355 VP |
3138 | (__force u32) htonl( |
3139 | (__force u32) req->tid))); | |
1cab775c VP |
3140 | ret = pass_accept_req(dev, rpl_skb); |
3141 | if (!ret) | |
3142 | kfree_skb(rpl_skb); | |
3143 | } | |
3144 | return; | |
3145 | } | |
3146 | ||
3147 | static int deferred_fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb) | |
2f5b48c3 SW |
3148 | { |
3149 | struct cpl_fw6_msg *rpl = cplhdr(skb); | |
1cab775c VP |
3150 | struct cpl_fw6_msg_ofld_connection_wr_rpl *req; |
3151 | ||
3152 | switch (rpl->type) { | |
3153 | case FW6_TYPE_CQE: | |
3154 | c4iw_ev_dispatch(dev, (struct t4_cqe *)&rpl->data[0]); | |
3155 | break; | |
3156 | case FW6_TYPE_OFLD_CONNECTION_WR_RPL: | |
3157 | req = (struct cpl_fw6_msg_ofld_connection_wr_rpl *)rpl->data; | |
3158 | switch (req->t_state) { | |
3159 | case TCP_SYN_SENT: | |
3160 | active_ofld_conn_reply(dev, skb, req); | |
3161 | break; | |
3162 | case TCP_SYN_RECV: | |
3163 | passive_ofld_conn_reply(dev, skb, req); | |
3164 | break; | |
3165 | default: | |
3166 | pr_err("%s unexpected ofld conn wr state %d\n", | |
3167 | __func__, req->t_state); | |
3168 | break; | |
3169 | } | |
3170 | break; | |
3171 | } | |
3172 | return 0; | |
3173 | } | |
3174 | ||
3175 | static void build_cpl_pass_accept_req(struct sk_buff *skb, int stid , u8 tos) | |
3176 | { | |
3177 | u32 l2info; | |
f079af7a | 3178 | u16 vlantag, len, hdr_len, eth_hdr_len; |
1cab775c VP |
3179 | u8 intf; |
3180 | struct cpl_rx_pkt *cpl = cplhdr(skb); | |
3181 | struct cpl_pass_accept_req *req; | |
3182 | struct tcp_options_received tmp_opt; | |
f079af7a | 3183 | struct c4iw_dev *dev; |
1cab775c | 3184 | |
f079af7a | 3185 | dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *))); |
1cab775c | 3186 | /* Store values from cpl_rx_pkt in temporary location. */ |
ef5d6355 VP |
3187 | vlantag = (__force u16) cpl->vlan; |
3188 | len = (__force u16) cpl->len; | |
3189 | l2info = (__force u32) cpl->l2info; | |
3190 | hdr_len = (__force u16) cpl->hdr_len; | |
1cab775c VP |
3191 | intf = cpl->iff; |
3192 | ||
3193 | __skb_pull(skb, sizeof(*req) + sizeof(struct rss_header)); | |
3194 | ||
3195 | /* | |
3196 | * We need to parse the TCP options from SYN packet. | |
3197 | * to generate cpl_pass_accept_req. | |
3198 | */ | |
3199 | memset(&tmp_opt, 0, sizeof(tmp_opt)); | |
3200 | tcp_clear_options(&tmp_opt); | |
1a2c6181 | 3201 | tcp_parse_options(skb, &tmp_opt, 0, NULL); |
1cab775c VP |
3202 | |
3203 | req = (struct cpl_pass_accept_req *)__skb_push(skb, sizeof(*req)); | |
3204 | memset(req, 0, sizeof(*req)); | |
3205 | req->l2info = cpu_to_be16(V_SYN_INTF(intf) | | |
ef5d6355 VP |
3206 | V_SYN_MAC_IDX(G_RX_MACIDX( |
3207 | (__force int) htonl(l2info))) | | |
1cab775c | 3208 | F_SYN_XACT_MATCH); |
f079af7a VP |
3209 | eth_hdr_len = is_t4(dev->rdev.lldi.adapter_type) ? |
3210 | G_RX_ETHHDR_LEN((__force int) htonl(l2info)) : | |
3211 | G_RX_T5_ETHHDR_LEN((__force int) htonl(l2info)); | |
ef5d6355 VP |
3212 | req->hdr_len = cpu_to_be32(V_SYN_RX_CHAN(G_RX_CHAN( |
3213 | (__force int) htonl(l2info))) | | |
3214 | V_TCP_HDR_LEN(G_RX_TCPHDR_LEN( | |
3215 | (__force int) htons(hdr_len))) | | |
3216 | V_IP_HDR_LEN(G_RX_IPHDR_LEN( | |
3217 | (__force int) htons(hdr_len))) | | |
f079af7a | 3218 | V_ETH_HDR_LEN(G_RX_ETHHDR_LEN(eth_hdr_len))); |
ef5d6355 VP |
3219 | req->vlan = (__force __be16) vlantag; |
3220 | req->len = (__force __be16) len; | |
1cab775c VP |
3221 | req->tos_stid = cpu_to_be32(PASS_OPEN_TID(stid) | |
3222 | PASS_OPEN_TOS(tos)); | |
3223 | req->tcpopt.mss = htons(tmp_opt.mss_clamp); | |
3224 | if (tmp_opt.wscale_ok) | |
3225 | req->tcpopt.wsf = tmp_opt.snd_wscale; | |
3226 | req->tcpopt.tstamp = tmp_opt.saw_tstamp; | |
3227 | if (tmp_opt.sack_ok) | |
3228 | req->tcpopt.sack = 1; | |
3229 | OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_PASS_ACCEPT_REQ, 0)); | |
3230 | return; | |
3231 | } | |
3232 | ||
3233 | static void send_fw_pass_open_req(struct c4iw_dev *dev, struct sk_buff *skb, | |
3234 | __be32 laddr, __be16 lport, | |
3235 | __be32 raddr, __be16 rport, | |
3236 | u32 rcv_isn, u32 filter, u16 window, | |
3237 | u32 rss_qid, u8 port_id) | |
3238 | { | |
3239 | struct sk_buff *req_skb; | |
3240 | struct fw_ofld_connection_wr *req; | |
3241 | struct cpl_pass_accept_req *cpl = cplhdr(skb); | |
3242 | ||
3243 | req_skb = alloc_skb(sizeof(struct fw_ofld_connection_wr), GFP_KERNEL); | |
3244 | req = (struct fw_ofld_connection_wr *)__skb_put(req_skb, sizeof(*req)); | |
3245 | memset(req, 0, sizeof(*req)); | |
3246 | req->op_compl = htonl(V_WR_OP(FW_OFLD_CONNECTION_WR) | FW_WR_COMPL(1)); | |
3247 | req->len16_pkd = htonl(FW_WR_LEN16(DIV_ROUND_UP(sizeof(*req), 16))); | |
3248 | req->le.version_cpl = htonl(F_FW_OFLD_CONNECTION_WR_CPL); | |
ef5d6355 | 3249 | req->le.filter = (__force __be32) filter; |
1cab775c VP |
3250 | req->le.lport = lport; |
3251 | req->le.pport = rport; | |
3252 | req->le.u.ipv4.lip = laddr; | |
3253 | req->le.u.ipv4.pip = raddr; | |
3254 | req->tcb.rcv_nxt = htonl(rcv_isn + 1); | |
3255 | req->tcb.rcv_adv = htons(window); | |
3256 | req->tcb.t_state_to_astid = | |
3257 | htonl(V_FW_OFLD_CONNECTION_WR_T_STATE(TCP_SYN_RECV) | | |
3258 | V_FW_OFLD_CONNECTION_WR_RCV_SCALE(cpl->tcpopt.wsf) | | |
3259 | V_FW_OFLD_CONNECTION_WR_ASTID( | |
3260 | GET_PASS_OPEN_TID(ntohl(cpl->tos_stid)))); | |
3261 | ||
3262 | /* | |
3263 | * We store the qid in opt2 which will be used by the firmware | |
3264 | * to send us the wr response. | |
3265 | */ | |
3266 | req->tcb.opt2 = htonl(V_RSS_QUEUE(rss_qid)); | |
3267 | ||
3268 | /* | |
3269 | * We initialize the MSS index in TCB to 0xF. | |
3270 | * So that when driver sends cpl_pass_accept_rpl | |
3271 | * TCB picks up the correct value. If this was 0 | |
3272 | * TP will ignore any value > 0 for MSS index. | |
3273 | */ | |
3274 | req->tcb.opt0 = cpu_to_be64(V_MSS_IDX(0xF)); | |
710a3110 | 3275 | req->cookie = (unsigned long)skb; |
1cab775c VP |
3276 | |
3277 | set_wr_txq(req_skb, CPL_PRIORITY_CONTROL, port_id); | |
3278 | cxgb4_ofld_send(dev->rdev.lldi.ports[0], req_skb); | |
3279 | } | |
3280 | ||
3281 | /* | |
3282 | * Handler for CPL_RX_PKT message. Need to handle cpl_rx_pkt | |
3283 | * messages when a filter is being used instead of server to | |
3284 | * redirect a syn packet. When packets hit filter they are redirected | |
3285 | * to the offload queue and driver tries to establish the connection | |
3286 | * using firmware work request. | |
3287 | */ | |
3288 | static int rx_pkt(struct c4iw_dev *dev, struct sk_buff *skb) | |
3289 | { | |
3290 | int stid; | |
3291 | unsigned int filter; | |
3292 | struct ethhdr *eh = NULL; | |
3293 | struct vlan_ethhdr *vlan_eh = NULL; | |
3294 | struct iphdr *iph; | |
3295 | struct tcphdr *tcph; | |
3296 | struct rss_header *rss = (void *)skb->data; | |
3297 | struct cpl_rx_pkt *cpl = (void *)skb->data; | |
3298 | struct cpl_pass_accept_req *req = (void *)(rss + 1); | |
3299 | struct l2t_entry *e; | |
3300 | struct dst_entry *dst; | |
1cab775c VP |
3301 | struct c4iw_ep *lep; |
3302 | u16 window; | |
3303 | struct port_info *pi; | |
3304 | struct net_device *pdev; | |
f079af7a | 3305 | u16 rss_qid, eth_hdr_len; |
1cab775c VP |
3306 | int step; |
3307 | u32 tx_chan; | |
3308 | struct neighbour *neigh; | |
3309 | ||
3310 | /* Drop all non-SYN packets */ | |
3311 | if (!(cpl->l2info & cpu_to_be32(F_RXF_SYN))) | |
3312 | goto reject; | |
3313 | ||
3314 | /* | |
3315 | * Drop all packets which did not hit the filter. | |
3316 | * Unlikely to happen. | |
3317 | */ | |
3318 | if (!(rss->filter_hit && rss->filter_tid)) | |
3319 | goto reject; | |
3320 | ||
3321 | /* | |
3322 | * Calculate the server tid from filter hit index from cpl_rx_pkt. | |
3323 | */ | |
ef5d6355 VP |
3324 | stid = (__force int) cpu_to_be32((__force u32) rss->hash_val) |
3325 | - dev->rdev.lldi.tids->sftid_base | |
1cab775c VP |
3326 | + dev->rdev.lldi.tids->nstids; |
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 VP |
3386 | } |
3387 | if (!e) { | |
3388 | pr_err("%s - failed to allocate l2t entry!\n", | |
3389 | __func__); | |
3390 | goto free_dst; | |
3391 | } | |
3392 | ||
3393 | step = dev->rdev.lldi.nrxq / dev->rdev.lldi.nchan; | |
3394 | rss_qid = dev->rdev.lldi.rxq_ids[pi->port_id * step]; | |
ef5d6355 | 3395 | window = (__force u16) htons((__force u16)tcph->window); |
1cab775c VP |
3396 | |
3397 | /* Calcuate filter portion for LE region. */ | |
ef5d6355 | 3398 | filter = (__force unsigned int) cpu_to_be32(select_ntuple(dev, dst, e)); |
1cab775c VP |
3399 | |
3400 | /* | |
3401 | * Synthesize the cpl_pass_accept_req. We have everything except the | |
3402 | * TID. Once firmware sends a reply with TID we update the TID field | |
3403 | * in cpl and pass it through the regular cpl_pass_accept_req path. | |
3404 | */ | |
3405 | build_cpl_pass_accept_req(skb, stid, iph->tos); | |
3406 | send_fw_pass_open_req(dev, skb, iph->daddr, tcph->dest, iph->saddr, | |
3407 | tcph->source, ntohl(tcph->seq), filter, window, | |
3408 | rss_qid, pi->port_id); | |
3409 | cxgb4_l2t_release(e); | |
3410 | free_dst: | |
3411 | dst_release(dst); | |
3412 | reject: | |
2f5b48c3 SW |
3413 | return 0; |
3414 | } | |
3415 | ||
be4c9bad RD |
3416 | /* |
3417 | * These are the real handlers that are called from a | |
3418 | * work queue. | |
3419 | */ | |
3420 | static c4iw_handler_func work_handlers[NUM_CPL_CMDS] = { | |
3421 | [CPL_ACT_ESTABLISH] = act_establish, | |
3422 | [CPL_ACT_OPEN_RPL] = act_open_rpl, | |
3423 | [CPL_RX_DATA] = rx_data, | |
3424 | [CPL_ABORT_RPL_RSS] = abort_rpl, | |
3425 | [CPL_ABORT_RPL] = abort_rpl, | |
3426 | [CPL_PASS_OPEN_RPL] = pass_open_rpl, | |
3427 | [CPL_CLOSE_LISTSRV_RPL] = close_listsrv_rpl, | |
3428 | [CPL_PASS_ACCEPT_REQ] = pass_accept_req, | |
3429 | [CPL_PASS_ESTABLISH] = pass_establish, | |
3430 | [CPL_PEER_CLOSE] = peer_close, | |
3431 | [CPL_ABORT_REQ_RSS] = peer_abort, | |
3432 | [CPL_CLOSE_CON_RPL] = close_con_rpl, | |
3433 | [CPL_RDMA_TERMINATE] = terminate, | |
2f5b48c3 | 3434 | [CPL_FW4_ACK] = fw4_ack, |
1cab775c VP |
3435 | [CPL_FW6_MSG] = deferred_fw6_msg, |
3436 | [CPL_RX_PKT] = rx_pkt | |
be4c9bad RD |
3437 | }; |
3438 | ||
3439 | static void process_timeout(struct c4iw_ep *ep) | |
3440 | { | |
3441 | struct c4iw_qp_attributes attrs; | |
3442 | int abort = 1; | |
3443 | ||
2f5b48c3 | 3444 | mutex_lock(&ep->com.mutex); |
be4c9bad RD |
3445 | PDBG("%s ep %p tid %u state %d\n", __func__, ep, ep->hwtid, |
3446 | ep->com.state); | |
793dad94 | 3447 | set_bit(TIMEDOUT, &ep->com.history); |
be4c9bad RD |
3448 | switch (ep->com.state) { |
3449 | case MPA_REQ_SENT: | |
3450 | __state_set(&ep->com, ABORTING); | |
3451 | connect_reply_upcall(ep, -ETIMEDOUT); | |
3452 | break; | |
3453 | case MPA_REQ_WAIT: | |
3454 | __state_set(&ep->com, ABORTING); | |
3455 | break; | |
3456 | case CLOSING: | |
3457 | case MORIBUND: | |
3458 | if (ep->com.cm_id && ep->com.qp) { | |
3459 | attrs.next_state = C4IW_QP_STATE_ERROR; | |
3460 | c4iw_modify_qp(ep->com.qp->rhp, | |
3461 | ep->com.qp, C4IW_QP_ATTR_NEXT_STATE, | |
3462 | &attrs, 1); | |
3463 | } | |
3464 | __state_set(&ep->com, ABORTING); | |
3465 | break; | |
3466 | default: | |
76f267b7 | 3467 | WARN(1, "%s unexpected state ep %p tid %u state %u\n", |
be4c9bad | 3468 | __func__, ep, ep->hwtid, ep->com.state); |
be4c9bad RD |
3469 | abort = 0; |
3470 | } | |
2f5b48c3 | 3471 | mutex_unlock(&ep->com.mutex); |
be4c9bad RD |
3472 | if (abort) |
3473 | abort_connection(ep, NULL, GFP_KERNEL); | |
3474 | c4iw_put_ep(&ep->com); | |
3475 | } | |
3476 | ||
3477 | static void process_timedout_eps(void) | |
3478 | { | |
3479 | struct c4iw_ep *ep; | |
3480 | ||
3481 | spin_lock_irq(&timeout_lock); | |
3482 | while (!list_empty(&timeout_list)) { | |
3483 | struct list_head *tmp; | |
3484 | ||
3485 | tmp = timeout_list.next; | |
3486 | list_del(tmp); | |
3487 | spin_unlock_irq(&timeout_lock); | |
3488 | ep = list_entry(tmp, struct c4iw_ep, entry); | |
3489 | process_timeout(ep); | |
3490 | spin_lock_irq(&timeout_lock); | |
3491 | } | |
3492 | spin_unlock_irq(&timeout_lock); | |
3493 | } | |
3494 | ||
3495 | static void process_work(struct work_struct *work) | |
3496 | { | |
3497 | struct sk_buff *skb = NULL; | |
3498 | struct c4iw_dev *dev; | |
c1d7356c | 3499 | struct cpl_act_establish *rpl; |
be4c9bad RD |
3500 | unsigned int opcode; |
3501 | int ret; | |
3502 | ||
3503 | while ((skb = skb_dequeue(&rxq))) { | |
3504 | rpl = cplhdr(skb); | |
3505 | dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *))); | |
3506 | opcode = rpl->ot.opcode; | |
3507 | ||
3508 | BUG_ON(!work_handlers[opcode]); | |
3509 | ret = work_handlers[opcode](dev, skb); | |
3510 | if (!ret) | |
3511 | kfree_skb(skb); | |
3512 | } | |
3513 | process_timedout_eps(); | |
3514 | } | |
3515 | ||
3516 | static DECLARE_WORK(skb_work, process_work); | |
3517 | ||
3518 | static void ep_timeout(unsigned long arg) | |
3519 | { | |
3520 | struct c4iw_ep *ep = (struct c4iw_ep *)arg; | |
1ec779cc | 3521 | int kickit = 0; |
be4c9bad RD |
3522 | |
3523 | spin_lock(&timeout_lock); | |
1ec779cc VP |
3524 | if (!test_and_set_bit(TIMEOUT, &ep->com.flags)) { |
3525 | list_add_tail(&ep->entry, &timeout_list); | |
3526 | kickit = 1; | |
3527 | } | |
be4c9bad | 3528 | spin_unlock(&timeout_lock); |
1ec779cc VP |
3529 | if (kickit) |
3530 | queue_work(workq, &skb_work); | |
be4c9bad RD |
3531 | } |
3532 | ||
cfdda9d7 SW |
3533 | /* |
3534 | * All the CM events are handled on a work queue to have a safe context. | |
3535 | */ | |
3536 | static int sched(struct c4iw_dev *dev, struct sk_buff *skb) | |
3537 | { | |
3538 | ||
3539 | /* | |
3540 | * Save dev in the skb->cb area. | |
3541 | */ | |
3542 | *((struct c4iw_dev **) (skb->cb + sizeof(void *))) = dev; | |
3543 | ||
3544 | /* | |
3545 | * Queue the skb and schedule the worker thread. | |
3546 | */ | |
3547 | skb_queue_tail(&rxq, skb); | |
3548 | queue_work(workq, &skb_work); | |
3549 | return 0; | |
3550 | } | |
3551 | ||
3552 | static int set_tcb_rpl(struct c4iw_dev *dev, struct sk_buff *skb) | |
3553 | { | |
3554 | struct cpl_set_tcb_rpl *rpl = cplhdr(skb); | |
3555 | ||
3556 | if (rpl->status != CPL_ERR_NONE) { | |
3557 | printk(KERN_ERR MOD "Unexpected SET_TCB_RPL status %u " | |
3558 | "for tid %u\n", rpl->status, GET_TID(rpl)); | |
3559 | } | |
2f5b48c3 | 3560 | kfree_skb(skb); |
cfdda9d7 SW |
3561 | return 0; |
3562 | } | |
3563 | ||
be4c9bad RD |
3564 | static int fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb) |
3565 | { | |
3566 | struct cpl_fw6_msg *rpl = cplhdr(skb); | |
3567 | struct c4iw_wr_wait *wr_waitp; | |
3568 | int ret; | |
3569 | ||
3570 | PDBG("%s type %u\n", __func__, rpl->type); | |
3571 | ||
3572 | switch (rpl->type) { | |
5be78ee9 | 3573 | case FW6_TYPE_WR_RPL: |
be4c9bad | 3574 | ret = (int)((be64_to_cpu(rpl->data[0]) >> 8) & 0xff); |
c8e081a1 | 3575 | wr_waitp = (struct c4iw_wr_wait *)(__force unsigned long) rpl->data[1]; |
be4c9bad | 3576 | PDBG("%s wr_waitp %p ret %u\n", __func__, wr_waitp, ret); |
d9594d99 SW |
3577 | if (wr_waitp) |
3578 | c4iw_wake_up(wr_waitp, ret ? -ret : 0); | |
2f5b48c3 | 3579 | kfree_skb(skb); |
be4c9bad | 3580 | break; |
5be78ee9 | 3581 | case FW6_TYPE_CQE: |
5be78ee9 | 3582 | case FW6_TYPE_OFLD_CONNECTION_WR_RPL: |
1cab775c | 3583 | sched(dev, skb); |
5be78ee9 | 3584 | break; |
be4c9bad RD |
3585 | default: |
3586 | printk(KERN_ERR MOD "%s unexpected fw6 msg type %u\n", __func__, | |
3587 | rpl->type); | |
2f5b48c3 | 3588 | kfree_skb(skb); |
be4c9bad RD |
3589 | break; |
3590 | } | |
3591 | return 0; | |
3592 | } | |
3593 | ||
8da7e7a5 SW |
3594 | static int peer_abort_intr(struct c4iw_dev *dev, struct sk_buff *skb) |
3595 | { | |
3596 | struct cpl_abort_req_rss *req = cplhdr(skb); | |
3597 | struct c4iw_ep *ep; | |
3598 | struct tid_info *t = dev->rdev.lldi.tids; | |
3599 | unsigned int tid = GET_TID(req); | |
3600 | ||
3601 | ep = lookup_tid(t, tid); | |
14b92228 SW |
3602 | if (!ep) { |
3603 | printk(KERN_WARNING MOD | |
3604 | "Abort on non-existent endpoint, tid %d\n", tid); | |
3605 | kfree_skb(skb); | |
3606 | return 0; | |
3607 | } | |
8da7e7a5 SW |
3608 | if (is_neg_adv_abort(req->status)) { |
3609 | PDBG("%s neg_adv_abort ep %p tid %u\n", __func__, ep, | |
3610 | ep->hwtid); | |
3611 | kfree_skb(skb); | |
3612 | return 0; | |
3613 | } | |
3614 | PDBG("%s ep %p tid %u state %u\n", __func__, ep, ep->hwtid, | |
3615 | ep->com.state); | |
3616 | ||
3617 | /* | |
3618 | * Wake up any threads in rdma_init() or rdma_fini(). | |
7c0a33d6 VP |
3619 | * However, if we are on MPAv2 and want to retry with MPAv1 |
3620 | * then, don't wake up yet. | |
8da7e7a5 | 3621 | */ |
7c0a33d6 VP |
3622 | if (mpa_rev == 2 && !ep->tried_with_mpa_v1) { |
3623 | if (ep->com.state != MPA_REQ_SENT) | |
3624 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); | |
3625 | } else | |
3626 | c4iw_wake_up(&ep->com.wr_wait, -ECONNRESET); | |
8da7e7a5 SW |
3627 | sched(dev, skb); |
3628 | return 0; | |
3629 | } | |
3630 | ||
be4c9bad RD |
3631 | /* |
3632 | * Most upcalls from the T4 Core go to sched() to | |
3633 | * schedule the processing on a work queue. | |
3634 | */ | |
3635 | c4iw_handler_func c4iw_handlers[NUM_CPL_CMDS] = { | |
3636 | [CPL_ACT_ESTABLISH] = sched, | |
3637 | [CPL_ACT_OPEN_RPL] = sched, | |
3638 | [CPL_RX_DATA] = sched, | |
3639 | [CPL_ABORT_RPL_RSS] = sched, | |
3640 | [CPL_ABORT_RPL] = sched, | |
3641 | [CPL_PASS_OPEN_RPL] = sched, | |
3642 | [CPL_CLOSE_LISTSRV_RPL] = sched, | |
3643 | [CPL_PASS_ACCEPT_REQ] = sched, | |
3644 | [CPL_PASS_ESTABLISH] = sched, | |
3645 | [CPL_PEER_CLOSE] = sched, | |
3646 | [CPL_CLOSE_CON_RPL] = sched, | |
8da7e7a5 | 3647 | [CPL_ABORT_REQ_RSS] = peer_abort_intr, |
be4c9bad RD |
3648 | [CPL_RDMA_TERMINATE] = sched, |
3649 | [CPL_FW4_ACK] = sched, | |
3650 | [CPL_SET_TCB_RPL] = set_tcb_rpl, | |
1cab775c VP |
3651 | [CPL_FW6_MSG] = fw6_msg, |
3652 | [CPL_RX_PKT] = sched | |
be4c9bad RD |
3653 | }; |
3654 | ||
cfdda9d7 SW |
3655 | int __init c4iw_cm_init(void) |
3656 | { | |
be4c9bad | 3657 | spin_lock_init(&timeout_lock); |
cfdda9d7 SW |
3658 | skb_queue_head_init(&rxq); |
3659 | ||
3660 | workq = create_singlethread_workqueue("iw_cxgb4"); | |
3661 | if (!workq) | |
3662 | return -ENOMEM; | |
3663 | ||
cfdda9d7 SW |
3664 | return 0; |
3665 | } | |
3666 | ||
3667 | void __exit c4iw_cm_term(void) | |
3668 | { | |
be4c9bad | 3669 | WARN_ON(!list_empty(&timeout_list)); |
cfdda9d7 SW |
3670 | flush_workqueue(workq); |
3671 | destroy_workqueue(workq); | |
3672 | } |