Commit | Line | Data |
---|---|---|
d7e09d03 PT |
1 | /* |
2 | * GPL HEADER START | |
3 | * | |
4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 only, | |
8 | * as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License version 2 for more details (a copy is included | |
14 | * in the LICENSE file that accompanied this code). | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * version 2 along with this program; If not, see | |
6a5b99a4 | 18 | * http://www.gnu.org/licenses/gpl-2.0.html |
d7e09d03 | 19 | * |
d7e09d03 PT |
20 | * GPL HEADER END |
21 | */ | |
22 | /* | |
23 | * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. | |
24 | * Use is subject to license terms. | |
25 | * | |
1dc563a6 | 26 | * Copyright (c) 2011, 2015, Intel Corporation. |
d7e09d03 PT |
27 | */ |
28 | /* | |
29 | * This file is part of Lustre, http://www.lustre.org/ | |
30 | * Lustre is a trademark of Sun Microsystems, Inc. | |
31 | * | |
32 | * lnet/klnds/socklnd/socklnd.c | |
33 | * | |
34 | * Author: Zach Brown <zab@zabbo.net> | |
35 | * Author: Peter J. Braam <braam@clusterfs.com> | |
36 | * Author: Phil Schwan <phil@clusterfs.com> | |
37 | * Author: Eric Barton <eric@bartonsoftware.com> | |
38 | */ | |
39 | ||
40 | #include "socklnd.h" | |
41 | ||
0b913529 | 42 | static lnd_t the_ksocklnd; |
ff13fd40 | 43 | struct ksock_nal_data ksocknal_data; |
d7e09d03 | 44 | |
ff13fd40 | 45 | static struct ksock_interface * |
d7e09d03 PT |
46 | ksocknal_ip2iface(lnet_ni_t *ni, __u32 ip) |
47 | { | |
ff13fd40 | 48 | struct ksock_net *net = ni->ni_data; |
97d10d0a | 49 | int i; |
ff13fd40 | 50 | struct ksock_interface *iface; |
d7e09d03 PT |
51 | |
52 | for (i = 0; i < net->ksnn_ninterfaces; i++) { | |
53 | LASSERT(i < LNET_MAX_INTERFACES); | |
54 | iface = &net->ksnn_interfaces[i]; | |
55 | ||
56 | if (iface->ksni_ipaddr == ip) | |
a1f659d4 | 57 | return iface; |
d7e09d03 PT |
58 | } |
59 | ||
a1f659d4 | 60 | return NULL; |
d7e09d03 PT |
61 | } |
62 | ||
ff13fd40 | 63 | static struct ksock_route * |
d4de2ab8 | 64 | ksocknal_create_route(__u32 ipaddr, int port) |
d7e09d03 | 65 | { |
ff13fd40 | 66 | struct ksock_route *route; |
d7e09d03 | 67 | |
d4de2ab8 | 68 | LIBCFS_ALLOC(route, sizeof(*route)); |
06ace26e | 69 | if (!route) |
a1f659d4 | 70 | return NULL; |
d7e09d03 | 71 | |
d4de2ab8 | 72 | atomic_set(&route->ksnr_refcount, 1); |
d7e09d03 PT |
73 | route->ksnr_peer = NULL; |
74 | route->ksnr_retry_interval = 0; /* OK to connect at any time */ | |
75 | route->ksnr_ipaddr = ipaddr; | |
76 | route->ksnr_port = port; | |
77 | route->ksnr_scheduled = 0; | |
78 | route->ksnr_connecting = 0; | |
79 | route->ksnr_connected = 0; | |
80 | route->ksnr_deleted = 0; | |
81 | route->ksnr_conn_count = 0; | |
82 | route->ksnr_share_count = 0; | |
83 | ||
a1f659d4 | 84 | return route; |
d7e09d03 PT |
85 | } |
86 | ||
87 | void | |
ff13fd40 | 88 | ksocknal_destroy_route(struct ksock_route *route) |
d7e09d03 | 89 | { |
5fd88337 | 90 | LASSERT(!atomic_read(&route->ksnr_refcount)); |
d7e09d03 | 91 | |
06ace26e | 92 | if (route->ksnr_peer) |
d7e09d03 PT |
93 | ksocknal_peer_decref(route->ksnr_peer); |
94 | ||
d4de2ab8 | 95 | LIBCFS_FREE(route, sizeof(*route)); |
d7e09d03 PT |
96 | } |
97 | ||
0b913529 | 98 | static int |
ff13fd40 | 99 | ksocknal_create_peer(struct ksock_peer **peerp, lnet_ni_t *ni, lnet_process_id_t id) |
d7e09d03 | 100 | { |
0d923635 | 101 | int cpt = lnet_cpt_of_nid(id.nid); |
ff13fd40 JS |
102 | struct ksock_net *net = ni->ni_data; |
103 | struct ksock_peer *peer; | |
d7e09d03 | 104 | |
d4de2ab8 HE |
105 | LASSERT(id.nid != LNET_NID_ANY); |
106 | LASSERT(id.pid != LNET_PID_ANY); | |
107 | LASSERT(!in_interrupt()); | |
d7e09d03 | 108 | |
0d923635 | 109 | LIBCFS_CPT_ALLOC(peer, lnet_cpt_table(), cpt, sizeof(*peer)); |
06ace26e | 110 | if (!peer) |
d7e09d03 PT |
111 | return -ENOMEM; |
112 | ||
d7e09d03 PT |
113 | peer->ksnp_ni = ni; |
114 | peer->ksnp_id = id; | |
d4de2ab8 | 115 | atomic_set(&peer->ksnp_refcount, 1); /* 1 ref for caller */ |
d7e09d03 PT |
116 | peer->ksnp_closing = 0; |
117 | peer->ksnp_accepting = 0; | |
118 | peer->ksnp_proto = NULL; | |
119 | peer->ksnp_last_alive = 0; | |
120 | peer->ksnp_zc_next_cookie = SOCKNAL_KEEPALIVE_PING + 1; | |
121 | ||
d4de2ab8 HE |
122 | INIT_LIST_HEAD(&peer->ksnp_conns); |
123 | INIT_LIST_HEAD(&peer->ksnp_routes); | |
124 | INIT_LIST_HEAD(&peer->ksnp_tx_queue); | |
125 | INIT_LIST_HEAD(&peer->ksnp_zc_req_list); | |
d7e09d03 PT |
126 | spin_lock_init(&peer->ksnp_lock); |
127 | ||
128 | spin_lock_bh(&net->ksnn_lock); | |
129 | ||
130 | if (net->ksnn_shutdown) { | |
131 | spin_unlock_bh(&net->ksnn_lock); | |
132 | ||
133 | LIBCFS_FREE(peer, sizeof(*peer)); | |
134 | CERROR("Can't create peer: network shutdown\n"); | |
135 | return -ESHUTDOWN; | |
136 | } | |
137 | ||
138 | net->ksnn_npeers++; | |
139 | ||
140 | spin_unlock_bh(&net->ksnn_lock); | |
141 | ||
142 | *peerp = peer; | |
143 | return 0; | |
144 | } | |
145 | ||
146 | void | |
ff13fd40 | 147 | ksocknal_destroy_peer(struct ksock_peer *peer) |
d7e09d03 | 148 | { |
ff13fd40 | 149 | struct ksock_net *net = peer->ksnp_ni->ni_data; |
d7e09d03 | 150 | |
d4de2ab8 | 151 | CDEBUG(D_NET, "peer %s %p deleted\n", |
c314c319 | 152 | libcfs_id2str(peer->ksnp_id), peer); |
d7e09d03 | 153 | |
5fd88337 JS |
154 | LASSERT(!atomic_read(&peer->ksnp_refcount)); |
155 | LASSERT(!peer->ksnp_accepting); | |
d4de2ab8 HE |
156 | LASSERT(list_empty(&peer->ksnp_conns)); |
157 | LASSERT(list_empty(&peer->ksnp_routes)); | |
158 | LASSERT(list_empty(&peer->ksnp_tx_queue)); | |
159 | LASSERT(list_empty(&peer->ksnp_zc_req_list)); | |
d7e09d03 | 160 | |
d4de2ab8 | 161 | LIBCFS_FREE(peer, sizeof(*peer)); |
d7e09d03 | 162 | |
4420cfd3 JS |
163 | /* |
164 | * NB a peer's connections and routes keep a reference on their peer | |
d7e09d03 PT |
165 | * until they are destroyed, so we can be assured that _all_ state to |
166 | * do with this peer has been cleaned up when its refcount drops to | |
4420cfd3 JS |
167 | * zero. |
168 | */ | |
d7e09d03 PT |
169 | spin_lock_bh(&net->ksnn_lock); |
170 | net->ksnn_npeers--; | |
171 | spin_unlock_bh(&net->ksnn_lock); | |
172 | } | |
173 | ||
ff13fd40 | 174 | struct ksock_peer * |
d4de2ab8 | 175 | ksocknal_find_peer_locked(lnet_ni_t *ni, lnet_process_id_t id) |
d7e09d03 | 176 | { |
97d10d0a MS |
177 | struct list_head *peer_list = ksocknal_nid2peerlist(id.nid); |
178 | struct list_head *tmp; | |
ff13fd40 | 179 | struct ksock_peer *peer; |
d7e09d03 | 180 | |
d4de2ab8 | 181 | list_for_each(tmp, peer_list) { |
ff13fd40 | 182 | peer = list_entry(tmp, struct ksock_peer, ksnp_list); |
d7e09d03 | 183 | |
d4de2ab8 | 184 | LASSERT(!peer->ksnp_closing); |
d7e09d03 PT |
185 | |
186 | if (peer->ksnp_ni != ni) | |
187 | continue; | |
188 | ||
189 | if (peer->ksnp_id.nid != id.nid || | |
190 | peer->ksnp_id.pid != id.pid) | |
191 | continue; | |
192 | ||
193 | CDEBUG(D_NET, "got peer [%p] -> %s (%d)\n", | |
194 | peer, libcfs_id2str(id), | |
195 | atomic_read(&peer->ksnp_refcount)); | |
a1f659d4 | 196 | return peer; |
d7e09d03 | 197 | } |
a1f659d4 | 198 | return NULL; |
d7e09d03 PT |
199 | } |
200 | ||
ff13fd40 | 201 | struct ksock_peer * |
d4de2ab8 | 202 | ksocknal_find_peer(lnet_ni_t *ni, lnet_process_id_t id) |
d7e09d03 | 203 | { |
ff13fd40 | 204 | struct ksock_peer *peer; |
d7e09d03 PT |
205 | |
206 | read_lock(&ksocknal_data.ksnd_global_lock); | |
207 | peer = ksocknal_find_peer_locked(ni, id); | |
06ace26e | 208 | if (peer) /* +1 ref for caller? */ |
d7e09d03 PT |
209 | ksocknal_peer_addref(peer); |
210 | read_unlock(&ksocknal_data.ksnd_global_lock); | |
211 | ||
a1f659d4 | 212 | return peer; |
d7e09d03 PT |
213 | } |
214 | ||
0b913529 | 215 | static void |
ff13fd40 | 216 | ksocknal_unlink_peer_locked(struct ksock_peer *peer) |
d7e09d03 | 217 | { |
97d10d0a MS |
218 | int i; |
219 | __u32 ip; | |
ff13fd40 | 220 | struct ksock_interface *iface; |
d7e09d03 PT |
221 | |
222 | for (i = 0; i < peer->ksnp_n_passive_ips; i++) { | |
d4de2ab8 | 223 | LASSERT(i < LNET_MAX_INTERFACES); |
d7e09d03 PT |
224 | ip = peer->ksnp_passive_ips[i]; |
225 | ||
226 | iface = ksocknal_ip2iface(peer->ksnp_ni, ip); | |
4420cfd3 JS |
227 | /* |
228 | * All IPs in peer->ksnp_passive_ips[] come from the | |
229 | * interface list, therefore the call must succeed. | |
230 | */ | |
06ace26e | 231 | LASSERT(iface); |
d7e09d03 PT |
232 | |
233 | CDEBUG(D_NET, "peer=%p iface=%p ksni_nroutes=%d\n", | |
234 | peer, iface, iface->ksni_nroutes); | |
235 | iface->ksni_npeers--; | |
236 | } | |
237 | ||
d4de2ab8 HE |
238 | LASSERT(list_empty(&peer->ksnp_conns)); |
239 | LASSERT(list_empty(&peer->ksnp_routes)); | |
240 | LASSERT(!peer->ksnp_closing); | |
d7e09d03 | 241 | peer->ksnp_closing = 1; |
d4de2ab8 | 242 | list_del(&peer->ksnp_list); |
d7e09d03 PT |
243 | /* lose peerlist's ref */ |
244 | ksocknal_peer_decref(peer); | |
245 | } | |
246 | ||
0b913529 | 247 | static int |
d4de2ab8 | 248 | ksocknal_get_peer_info(lnet_ni_t *ni, int index, |
c314c319 JS |
249 | lnet_process_id_t *id, __u32 *myip, __u32 *peer_ip, |
250 | int *port, int *conn_count, int *share_count) | |
d7e09d03 | 251 | { |
ff13fd40 | 252 | struct ksock_peer *peer; |
97d10d0a | 253 | struct list_head *ptmp; |
ff13fd40 | 254 | struct ksock_route *route; |
97d10d0a MS |
255 | struct list_head *rtmp; |
256 | int i; | |
257 | int j; | |
258 | int rc = -ENOENT; | |
d7e09d03 PT |
259 | |
260 | read_lock(&ksocknal_data.ksnd_global_lock); | |
261 | ||
262 | for (i = 0; i < ksocknal_data.ksnd_peer_hash_size; i++) { | |
d4de2ab8 | 263 | list_for_each(ptmp, &ksocknal_data.ksnd_peers[i]) { |
ff13fd40 | 264 | peer = list_entry(ptmp, struct ksock_peer, ksnp_list); |
d7e09d03 PT |
265 | |
266 | if (peer->ksnp_ni != ni) | |
267 | continue; | |
268 | ||
5fd88337 | 269 | if (!peer->ksnp_n_passive_ips && |
d7e09d03 PT |
270 | list_empty(&peer->ksnp_routes)) { |
271 | if (index-- > 0) | |
272 | continue; | |
273 | ||
274 | *id = peer->ksnp_id; | |
275 | *myip = 0; | |
276 | *peer_ip = 0; | |
277 | *port = 0; | |
278 | *conn_count = 0; | |
279 | *share_count = 0; | |
280 | rc = 0; | |
281 | goto out; | |
282 | } | |
283 | ||
284 | for (j = 0; j < peer->ksnp_n_passive_ips; j++) { | |
285 | if (index-- > 0) | |
286 | continue; | |
287 | ||
288 | *id = peer->ksnp_id; | |
289 | *myip = peer->ksnp_passive_ips[j]; | |
290 | *peer_ip = 0; | |
291 | *port = 0; | |
292 | *conn_count = 0; | |
293 | *share_count = 0; | |
294 | rc = 0; | |
295 | goto out; | |
296 | } | |
297 | ||
d4de2ab8 | 298 | list_for_each(rtmp, &peer->ksnp_routes) { |
d7e09d03 PT |
299 | if (index-- > 0) |
300 | continue; | |
301 | ||
ff13fd40 | 302 | route = list_entry(rtmp, struct ksock_route, |
c314c319 | 303 | ksnr_list); |
d7e09d03 PT |
304 | |
305 | *id = peer->ksnp_id; | |
306 | *myip = route->ksnr_myipaddr; | |
307 | *peer_ip = route->ksnr_ipaddr; | |
308 | *port = route->ksnr_port; | |
309 | *conn_count = route->ksnr_conn_count; | |
310 | *share_count = route->ksnr_share_count; | |
311 | rc = 0; | |
312 | goto out; | |
313 | } | |
314 | } | |
315 | } | |
316 | out: | |
317 | read_unlock(&ksocknal_data.ksnd_global_lock); | |
a1f659d4 | 318 | return rc; |
d7e09d03 PT |
319 | } |
320 | ||
0b913529 | 321 | static void |
ff13fd40 | 322 | ksocknal_associate_route_conn_locked(struct ksock_route *route, struct ksock_conn *conn) |
d7e09d03 | 323 | { |
ff13fd40 | 324 | struct ksock_peer *peer = route->ksnr_peer; |
97d10d0a | 325 | int type = conn->ksnc_type; |
ff13fd40 | 326 | struct ksock_interface *iface; |
d7e09d03 PT |
327 | |
328 | conn->ksnc_route = route; | |
329 | ksocknal_route_addref(route); | |
330 | ||
331 | if (route->ksnr_myipaddr != conn->ksnc_myipaddr) { | |
5fd88337 | 332 | if (!route->ksnr_myipaddr) { |
d7e09d03 | 333 | /* route wasn't bound locally yet (the initial route) */ |
5e8f6920 | 334 | CDEBUG(D_NET, "Binding %s %pI4h to %pI4h\n", |
d7e09d03 | 335 | libcfs_id2str(peer->ksnp_id), |
5e8f6920 PT |
336 | &route->ksnr_ipaddr, |
337 | &conn->ksnc_myipaddr); | |
d7e09d03 | 338 | } else { |
2d00bd17 | 339 | CDEBUG(D_NET, "Rebinding %s %pI4h from %pI4h to %pI4h\n", |
d7e09d03 | 340 | libcfs_id2str(peer->ksnp_id), |
5e8f6920 PT |
341 | &route->ksnr_ipaddr, |
342 | &route->ksnr_myipaddr, | |
343 | &conn->ksnc_myipaddr); | |
d7e09d03 PT |
344 | |
345 | iface = ksocknal_ip2iface(route->ksnr_peer->ksnp_ni, | |
346 | route->ksnr_myipaddr); | |
06ace26e | 347 | if (iface) |
d7e09d03 PT |
348 | iface->ksni_nroutes--; |
349 | } | |
350 | route->ksnr_myipaddr = conn->ksnc_myipaddr; | |
351 | iface = ksocknal_ip2iface(route->ksnr_peer->ksnp_ni, | |
352 | route->ksnr_myipaddr); | |
06ace26e | 353 | if (iface) |
d7e09d03 PT |
354 | iface->ksni_nroutes++; |
355 | } | |
356 | ||
51078e25 | 357 | route->ksnr_connected |= (1 << type); |
d7e09d03 PT |
358 | route->ksnr_conn_count++; |
359 | ||
4420cfd3 JS |
360 | /* |
361 | * Successful connection => further attempts can | |
362 | * proceed immediately | |
363 | */ | |
d7e09d03 PT |
364 | route->ksnr_retry_interval = 0; |
365 | } | |
366 | ||
0b913529 | 367 | static void |
ff13fd40 | 368 | ksocknal_add_route_locked(struct ksock_peer *peer, struct ksock_route *route) |
d7e09d03 | 369 | { |
97d10d0a | 370 | struct list_head *tmp; |
ff13fd40 JS |
371 | struct ksock_conn *conn; |
372 | struct ksock_route *route2; | |
d7e09d03 | 373 | |
d4de2ab8 | 374 | LASSERT(!peer->ksnp_closing); |
06ace26e | 375 | LASSERT(!route->ksnr_peer); |
d4de2ab8 HE |
376 | LASSERT(!route->ksnr_scheduled); |
377 | LASSERT(!route->ksnr_connecting); | |
5fd88337 | 378 | LASSERT(!route->ksnr_connected); |
d7e09d03 PT |
379 | |
380 | /* LASSERT(unique) */ | |
381 | list_for_each(tmp, &peer->ksnp_routes) { | |
ff13fd40 | 382 | route2 = list_entry(tmp, struct ksock_route, ksnr_list); |
d7e09d03 PT |
383 | |
384 | if (route2->ksnr_ipaddr == route->ksnr_ipaddr) { | |
5e8f6920 | 385 | CERROR("Duplicate route %s %pI4h\n", |
c314c319 JS |
386 | libcfs_id2str(peer->ksnp_id), |
387 | &route->ksnr_ipaddr); | |
d7e09d03 PT |
388 | LBUG(); |
389 | } | |
390 | } | |
391 | ||
392 | route->ksnr_peer = peer; | |
393 | ksocknal_peer_addref(peer); | |
394 | /* peer's routelist takes over my ref on 'route' */ | |
395 | list_add_tail(&route->ksnr_list, &peer->ksnp_routes); | |
396 | ||
397 | list_for_each(tmp, &peer->ksnp_conns) { | |
ff13fd40 | 398 | conn = list_entry(tmp, struct ksock_conn, ksnc_list); |
d7e09d03 PT |
399 | |
400 | if (conn->ksnc_ipaddr != route->ksnr_ipaddr) | |
401 | continue; | |
402 | ||
403 | ksocknal_associate_route_conn_locked(route, conn); | |
404 | /* keep going (typed routes) */ | |
405 | } | |
406 | } | |
407 | ||
0b913529 | 408 | static void |
ff13fd40 | 409 | ksocknal_del_route_locked(struct ksock_route *route) |
d7e09d03 | 410 | { |
ff13fd40 JS |
411 | struct ksock_peer *peer = route->ksnr_peer; |
412 | struct ksock_interface *iface; | |
413 | struct ksock_conn *conn; | |
97d10d0a MS |
414 | struct list_head *ctmp; |
415 | struct list_head *cnxt; | |
d7e09d03 | 416 | |
d4de2ab8 | 417 | LASSERT(!route->ksnr_deleted); |
d7e09d03 PT |
418 | |
419 | /* Close associated conns */ | |
d4de2ab8 | 420 | list_for_each_safe(ctmp, cnxt, &peer->ksnp_conns) { |
ff13fd40 | 421 | conn = list_entry(ctmp, struct ksock_conn, ksnc_list); |
d7e09d03 PT |
422 | |
423 | if (conn->ksnc_route != route) | |
424 | continue; | |
425 | ||
d4de2ab8 | 426 | ksocknal_close_conn_locked(conn, 0); |
d7e09d03 PT |
427 | } |
428 | ||
5fd88337 | 429 | if (route->ksnr_myipaddr) { |
d7e09d03 PT |
430 | iface = ksocknal_ip2iface(route->ksnr_peer->ksnp_ni, |
431 | route->ksnr_myipaddr); | |
06ace26e | 432 | if (iface) |
d7e09d03 PT |
433 | iface->ksni_nroutes--; |
434 | } | |
435 | ||
436 | route->ksnr_deleted = 1; | |
d4de2ab8 | 437 | list_del(&route->ksnr_list); |
d7e09d03 PT |
438 | ksocknal_route_decref(route); /* drop peer's ref */ |
439 | ||
d4de2ab8 HE |
440 | if (list_empty(&peer->ksnp_routes) && |
441 | list_empty(&peer->ksnp_conns)) { | |
4420cfd3 JS |
442 | /* |
443 | * I've just removed the last route to a peer with no active | |
444 | * connections | |
445 | */ | |
d4de2ab8 | 446 | ksocknal_unlink_peer_locked(peer); |
d7e09d03 PT |
447 | } |
448 | } | |
449 | ||
450 | int | |
d4de2ab8 | 451 | ksocknal_add_peer(lnet_ni_t *ni, lnet_process_id_t id, __u32 ipaddr, int port) |
d7e09d03 | 452 | { |
97d10d0a | 453 | struct list_head *tmp; |
ff13fd40 JS |
454 | struct ksock_peer *peer; |
455 | struct ksock_peer *peer2; | |
456 | struct ksock_route *route; | |
457 | struct ksock_route *route2; | |
97d10d0a | 458 | int rc; |
d7e09d03 PT |
459 | |
460 | if (id.nid == LNET_NID_ANY || | |
461 | id.pid == LNET_PID_ANY) | |
71397095 | 462 | return -EINVAL; |
d7e09d03 PT |
463 | |
464 | /* Have a brand new peer ready... */ | |
465 | rc = ksocknal_create_peer(&peer, ni, id); | |
5fd88337 | 466 | if (rc) |
d7e09d03 PT |
467 | return rc; |
468 | ||
d4de2ab8 | 469 | route = ksocknal_create_route(ipaddr, port); |
06ace26e | 470 | if (!route) { |
d7e09d03 | 471 | ksocknal_peer_decref(peer); |
71397095 | 472 | return -ENOMEM; |
d7e09d03 PT |
473 | } |
474 | ||
475 | write_lock_bh(&ksocknal_data.ksnd_global_lock); | |
476 | ||
477 | /* always called with a ref on ni, so shutdown can't have started */ | |
9797fb0e | 478 | LASSERT(!((struct ksock_net *)ni->ni_data)->ksnn_shutdown); |
d7e09d03 | 479 | |
d4de2ab8 | 480 | peer2 = ksocknal_find_peer_locked(ni, id); |
06ace26e | 481 | if (peer2) { |
d7e09d03 PT |
482 | ksocknal_peer_decref(peer); |
483 | peer = peer2; | |
484 | } else { | |
485 | /* peer table takes my ref on peer */ | |
d4de2ab8 | 486 | list_add_tail(&peer->ksnp_list, |
c314c319 | 487 | ksocknal_nid2peerlist(id.nid)); |
d7e09d03 PT |
488 | } |
489 | ||
490 | route2 = NULL; | |
d4de2ab8 | 491 | list_for_each(tmp, &peer->ksnp_routes) { |
ff13fd40 | 492 | route2 = list_entry(tmp, struct ksock_route, ksnr_list); |
d7e09d03 PT |
493 | |
494 | if (route2->ksnr_ipaddr == ipaddr) | |
495 | break; | |
496 | ||
497 | route2 = NULL; | |
498 | } | |
06ace26e | 499 | if (!route2) { |
d7e09d03 PT |
500 | ksocknal_add_route_locked(peer, route); |
501 | route->ksnr_share_count++; | |
502 | } else { | |
503 | ksocknal_route_decref(route); | |
504 | route2->ksnr_share_count++; | |
505 | } | |
506 | ||
507 | write_unlock_bh(&ksocknal_data.ksnd_global_lock); | |
508 | ||
a1f659d4 | 509 | return 0; |
d7e09d03 PT |
510 | } |
511 | ||
0b913529 | 512 | static void |
ff13fd40 | 513 | ksocknal_del_peer_locked(struct ksock_peer *peer, __u32 ip) |
d7e09d03 | 514 | { |
ff13fd40 JS |
515 | struct ksock_conn *conn; |
516 | struct ksock_route *route; | |
97d10d0a MS |
517 | struct list_head *tmp; |
518 | struct list_head *nxt; | |
519 | int nshared; | |
d7e09d03 | 520 | |
d4de2ab8 | 521 | LASSERT(!peer->ksnp_closing); |
d7e09d03 PT |
522 | |
523 | /* Extra ref prevents peer disappearing until I'm done with it */ | |
524 | ksocknal_peer_addref(peer); | |
525 | ||
d4de2ab8 | 526 | list_for_each_safe(tmp, nxt, &peer->ksnp_routes) { |
ff13fd40 | 527 | route = list_entry(tmp, struct ksock_route, ksnr_list); |
d7e09d03 PT |
528 | |
529 | /* no match */ | |
5fd88337 | 530 | if (!(!ip || route->ksnr_ipaddr == ip)) |
d7e09d03 PT |
531 | continue; |
532 | ||
533 | route->ksnr_share_count = 0; | |
534 | /* This deletes associated conns too */ | |
d4de2ab8 | 535 | ksocknal_del_route_locked(route); |
d7e09d03 PT |
536 | } |
537 | ||
538 | nshared = 0; | |
d4de2ab8 | 539 | list_for_each_safe(tmp, nxt, &peer->ksnp_routes) { |
ff13fd40 | 540 | route = list_entry(tmp, struct ksock_route, ksnr_list); |
d7e09d03 PT |
541 | nshared += route->ksnr_share_count; |
542 | } | |
543 | ||
5fd88337 | 544 | if (!nshared) { |
4420cfd3 JS |
545 | /* |
546 | * remove everything else if there are no explicit entries | |
547 | * left | |
548 | */ | |
d4de2ab8 | 549 | list_for_each_safe(tmp, nxt, &peer->ksnp_routes) { |
ff13fd40 | 550 | route = list_entry(tmp, struct ksock_route, ksnr_list); |
d7e09d03 PT |
551 | |
552 | /* we should only be removing auto-entries */ | |
5fd88337 | 553 | LASSERT(!route->ksnr_share_count); |
d4de2ab8 | 554 | ksocknal_del_route_locked(route); |
d7e09d03 PT |
555 | } |
556 | ||
d4de2ab8 | 557 | list_for_each_safe(tmp, nxt, &peer->ksnp_conns) { |
ff13fd40 | 558 | conn = list_entry(tmp, struct ksock_conn, ksnc_list); |
d7e09d03 PT |
559 | |
560 | ksocknal_close_conn_locked(conn, 0); | |
561 | } | |
562 | } | |
563 | ||
564 | ksocknal_peer_decref(peer); | |
565 | /* NB peer unlinks itself when last conn/route is removed */ | |
566 | } | |
567 | ||
0b913529 | 568 | static int |
d4de2ab8 | 569 | ksocknal_del_peer(lnet_ni_t *ni, lnet_process_id_t id, __u32 ip) |
d7e09d03 | 570 | { |
d4de2ab8 | 571 | LIST_HEAD(zombies); |
97d10d0a MS |
572 | struct list_head *ptmp; |
573 | struct list_head *pnxt; | |
ff13fd40 | 574 | struct ksock_peer *peer; |
97d10d0a MS |
575 | int lo; |
576 | int hi; | |
577 | int i; | |
578 | int rc = -ENOENT; | |
d7e09d03 PT |
579 | |
580 | write_lock_bh(&ksocknal_data.ksnd_global_lock); | |
581 | ||
d3d3d37a JS |
582 | if (id.nid != LNET_NID_ANY) { |
583 | lo = (int)(ksocknal_nid2peerlist(id.nid) - ksocknal_data.ksnd_peers); | |
584 | hi = (int)(ksocknal_nid2peerlist(id.nid) - ksocknal_data.ksnd_peers); | |
585 | } else { | |
d7e09d03 PT |
586 | lo = 0; |
587 | hi = ksocknal_data.ksnd_peer_hash_size - 1; | |
588 | } | |
589 | ||
590 | for (i = lo; i <= hi; i++) { | |
c314c319 | 591 | list_for_each_safe(ptmp, pnxt, &ksocknal_data.ksnd_peers[i]) { |
ff13fd40 | 592 | peer = list_entry(ptmp, struct ksock_peer, ksnp_list); |
d7e09d03 PT |
593 | |
594 | if (peer->ksnp_ni != ni) | |
595 | continue; | |
596 | ||
597 | if (!((id.nid == LNET_NID_ANY || peer->ksnp_id.nid == id.nid) && | |
598 | (id.pid == LNET_PID_ANY || peer->ksnp_id.pid == id.pid))) | |
599 | continue; | |
600 | ||
601 | ksocknal_peer_addref(peer); /* a ref for me... */ | |
602 | ||
d4de2ab8 | 603 | ksocknal_del_peer_locked(peer, ip); |
d7e09d03 PT |
604 | |
605 | if (peer->ksnp_closing && | |
606 | !list_empty(&peer->ksnp_tx_queue)) { | |
d4de2ab8 HE |
607 | LASSERT(list_empty(&peer->ksnp_conns)); |
608 | LASSERT(list_empty(&peer->ksnp_routes)); | |
d7e09d03 PT |
609 | |
610 | list_splice_init(&peer->ksnp_tx_queue, | |
c314c319 | 611 | &zombies); |
d7e09d03 PT |
612 | } |
613 | ||
614 | ksocknal_peer_decref(peer); /* ...till here */ | |
615 | ||
616 | rc = 0; /* matched! */ | |
617 | } | |
618 | } | |
619 | ||
620 | write_unlock_bh(&ksocknal_data.ksnd_global_lock); | |
621 | ||
622 | ksocknal_txlist_done(ni, &zombies, 1); | |
623 | ||
a1f659d4 | 624 | return rc; |
d7e09d03 PT |
625 | } |
626 | ||
ff13fd40 | 627 | static struct ksock_conn * |
d4de2ab8 | 628 | ksocknal_get_conn_by_idx(lnet_ni_t *ni, int index) |
d7e09d03 | 629 | { |
ff13fd40 | 630 | struct ksock_peer *peer; |
97d10d0a | 631 | struct list_head *ptmp; |
ff13fd40 | 632 | struct ksock_conn *conn; |
97d10d0a MS |
633 | struct list_head *ctmp; |
634 | int i; | |
d7e09d03 PT |
635 | |
636 | read_lock(&ksocknal_data.ksnd_global_lock); | |
637 | ||
638 | for (i = 0; i < ksocknal_data.ksnd_peer_hash_size; i++) { | |
d4de2ab8 | 639 | list_for_each(ptmp, &ksocknal_data.ksnd_peers[i]) { |
ff13fd40 | 640 | peer = list_entry(ptmp, struct ksock_peer, ksnp_list); |
d7e09d03 | 641 | |
d4de2ab8 | 642 | LASSERT(!peer->ksnp_closing); |
d7e09d03 PT |
643 | |
644 | if (peer->ksnp_ni != ni) | |
645 | continue; | |
646 | ||
d4de2ab8 | 647 | list_for_each(ctmp, &peer->ksnp_conns) { |
d7e09d03 PT |
648 | if (index-- > 0) |
649 | continue; | |
650 | ||
ff13fd40 | 651 | conn = list_entry(ctmp, struct ksock_conn, |
c314c319 | 652 | ksnc_list); |
d7e09d03 | 653 | ksocknal_conn_addref(conn); |
4b18c358 | 654 | read_unlock(&ksocknal_data.ksnd_global_lock); |
a1f659d4 | 655 | return conn; |
d7e09d03 PT |
656 | } |
657 | } | |
658 | } | |
659 | ||
660 | read_unlock(&ksocknal_data.ksnd_global_lock); | |
a1f659d4 | 661 | return NULL; |
d7e09d03 PT |
662 | } |
663 | ||
ff13fd40 | 664 | static struct ksock_sched * |
d7e09d03 PT |
665 | ksocknal_choose_scheduler_locked(unsigned int cpt) |
666 | { | |
667 | struct ksock_sched_info *info = ksocknal_data.ksnd_sched_info[cpt]; | |
ff13fd40 | 668 | struct ksock_sched *sched; |
97d10d0a | 669 | int i; |
d7e09d03 PT |
670 | |
671 | LASSERT(info->ksi_nthreads > 0); | |
672 | ||
673 | sched = &info->ksi_scheds[0]; | |
674 | /* | |
675 | * NB: it's safe so far, but info->ksi_nthreads could be changed | |
676 | * at runtime when we have dynamic LNet configuration, then we | |
677 | * need to take care of this. | |
678 | */ | |
679 | for (i = 1; i < info->ksi_nthreads; i++) { | |
680 | if (sched->kss_nconns > info->ksi_scheds[i].kss_nconns) | |
681 | sched = &info->ksi_scheds[i]; | |
682 | } | |
683 | ||
684 | return sched; | |
685 | } | |
686 | ||
0b913529 | 687 | static int |
d4de2ab8 | 688 | ksocknal_local_ipvec(lnet_ni_t *ni, __u32 *ipaddrs) |
d7e09d03 | 689 | { |
ff13fd40 | 690 | struct ksock_net *net = ni->ni_data; |
97d10d0a MS |
691 | int i; |
692 | int nip; | |
d7e09d03 PT |
693 | |
694 | read_lock(&ksocknal_data.ksnd_global_lock); | |
695 | ||
696 | nip = net->ksnn_ninterfaces; | |
d4de2ab8 | 697 | LASSERT(nip <= LNET_MAX_INTERFACES); |
d7e09d03 | 698 | |
4420cfd3 JS |
699 | /* |
700 | * Only offer interfaces for additional connections if I have | |
701 | * more than one. | |
702 | */ | |
d7e09d03 PT |
703 | if (nip < 2) { |
704 | read_unlock(&ksocknal_data.ksnd_global_lock); | |
705 | return 0; | |
706 | } | |
707 | ||
708 | for (i = 0; i < nip; i++) { | |
709 | ipaddrs[i] = net->ksnn_interfaces[i].ksni_ipaddr; | |
5fd88337 | 710 | LASSERT(ipaddrs[i]); |
d7e09d03 PT |
711 | } |
712 | ||
713 | read_unlock(&ksocknal_data.ksnd_global_lock); | |
a1f659d4 | 714 | return nip; |
d7e09d03 PT |
715 | } |
716 | ||
0b913529 | 717 | static int |
ff13fd40 | 718 | ksocknal_match_peerip(struct ksock_interface *iface, __u32 *ips, int nips) |
d7e09d03 | 719 | { |
97d10d0a MS |
720 | int best_netmatch = 0; |
721 | int best_xor = 0; | |
722 | int best = -1; | |
723 | int this_xor; | |
724 | int this_netmatch; | |
725 | int i; | |
d7e09d03 PT |
726 | |
727 | for (i = 0; i < nips; i++) { | |
5fd88337 | 728 | if (!ips[i]) |
d7e09d03 PT |
729 | continue; |
730 | ||
b6ee3824 | 731 | this_xor = ips[i] ^ iface->ksni_ipaddr; |
5fd88337 | 732 | this_netmatch = !(this_xor & iface->ksni_netmask) ? 1 : 0; |
d7e09d03 PT |
733 | |
734 | if (!(best < 0 || | |
735 | best_netmatch < this_netmatch || | |
736 | (best_netmatch == this_netmatch && | |
737 | best_xor > this_xor))) | |
738 | continue; | |
739 | ||
740 | best = i; | |
741 | best_netmatch = this_netmatch; | |
742 | best_xor = this_xor; | |
743 | } | |
744 | ||
d4de2ab8 | 745 | LASSERT(best >= 0); |
a1f659d4 | 746 | return best; |
d7e09d03 PT |
747 | } |
748 | ||
0b913529 | 749 | static int |
ff13fd40 | 750 | ksocknal_select_ips(struct ksock_peer *peer, __u32 *peerips, int n_peerips) |
d7e09d03 | 751 | { |
97d10d0a | 752 | rwlock_t *global_lock = &ksocknal_data.ksnd_global_lock; |
ff13fd40 JS |
753 | struct ksock_net *net = peer->ksnp_ni->ni_data; |
754 | struct ksock_interface *iface; | |
755 | struct ksock_interface *best_iface; | |
97d10d0a MS |
756 | int n_ips; |
757 | int i; | |
758 | int j; | |
759 | int k; | |
760 | __u32 ip; | |
761 | __u32 xor; | |
762 | int this_netmatch; | |
763 | int best_netmatch; | |
764 | int best_npeers; | |
d7e09d03 | 765 | |
4420cfd3 JS |
766 | /* |
767 | * CAVEAT EMPTOR: We do all our interface matching with an | |
d7e09d03 PT |
768 | * exclusive hold of global lock at IRQ priority. We're only |
769 | * expecting to be dealing with small numbers of interfaces, so the | |
4420cfd3 JS |
770 | * O(n**3)-ness shouldn't matter |
771 | */ | |
772 | /* | |
773 | * Also note that I'm not going to return more than n_peerips | |
774 | * interfaces, even if I have more myself | |
775 | */ | |
d7e09d03 PT |
776 | write_lock_bh(global_lock); |
777 | ||
d4de2ab8 HE |
778 | LASSERT(n_peerips <= LNET_MAX_INTERFACES); |
779 | LASSERT(net->ksnn_ninterfaces <= LNET_MAX_INTERFACES); | |
d7e09d03 | 780 | |
4420cfd3 JS |
781 | /* |
782 | * Only match interfaces for additional connections | |
783 | * if I have > 1 interface | |
784 | */ | |
d7e09d03 | 785 | n_ips = (net->ksnn_ninterfaces < 2) ? 0 : |
0c575417 | 786 | min(n_peerips, net->ksnn_ninterfaces); |
d7e09d03 PT |
787 | |
788 | for (i = 0; peer->ksnp_n_passive_ips < n_ips; i++) { | |
789 | /* ^ yes really... */ | |
790 | ||
4420cfd3 JS |
791 | /* |
792 | * If we have any new interfaces, first tick off all the | |
d7e09d03 PT |
793 | * peer IPs that match old interfaces, then choose new |
794 | * interfaces to match the remaining peer IPS. | |
795 | * We don't forget interfaces we've stopped using; we might | |
4420cfd3 JS |
796 | * start using them again... |
797 | */ | |
d7e09d03 PT |
798 | if (i < peer->ksnp_n_passive_ips) { |
799 | /* Old interface. */ | |
800 | ip = peer->ksnp_passive_ips[i]; | |
801 | best_iface = ksocknal_ip2iface(peer->ksnp_ni, ip); | |
802 | ||
2b51cb03 DE |
803 | /* peer passive ips are kept up to date */ |
804 | LASSERT(best_iface); | |
d7e09d03 PT |
805 | } else { |
806 | /* choose a new interface */ | |
d4de2ab8 | 807 | LASSERT(i == peer->ksnp_n_passive_ips); |
d7e09d03 PT |
808 | |
809 | best_iface = NULL; | |
810 | best_netmatch = 0; | |
811 | best_npeers = 0; | |
812 | ||
813 | for (j = 0; j < net->ksnn_ninterfaces; j++) { | |
814 | iface = &net->ksnn_interfaces[j]; | |
815 | ip = iface->ksni_ipaddr; | |
816 | ||
817 | for (k = 0; k < peer->ksnp_n_passive_ips; k++) | |
818 | if (peer->ksnp_passive_ips[k] == ip) | |
819 | break; | |
820 | ||
821 | if (k < peer->ksnp_n_passive_ips) /* using it already */ | |
822 | continue; | |
823 | ||
824 | k = ksocknal_match_peerip(iface, peerips, n_peerips); | |
b6ee3824 | 825 | xor = ip ^ peerips[k]; |
5fd88337 | 826 | this_netmatch = !(xor & iface->ksni_netmask) ? 1 : 0; |
d7e09d03 | 827 | |
06ace26e | 828 | if (!(!best_iface || |
d7e09d03 PT |
829 | best_netmatch < this_netmatch || |
830 | (best_netmatch == this_netmatch && | |
831 | best_npeers > iface->ksni_npeers))) | |
832 | continue; | |
833 | ||
834 | best_iface = iface; | |
835 | best_netmatch = this_netmatch; | |
836 | best_npeers = iface->ksni_npeers; | |
837 | } | |
838 | ||
2b51cb03 DE |
839 | LASSERT(best_iface); |
840 | ||
d7e09d03 PT |
841 | best_iface->ksni_npeers++; |
842 | ip = best_iface->ksni_ipaddr; | |
843 | peer->ksnp_passive_ips[i] = ip; | |
51078e25 | 844 | peer->ksnp_n_passive_ips = i + 1; |
d7e09d03 PT |
845 | } |
846 | ||
d7e09d03 PT |
847 | /* mark the best matching peer IP used */ |
848 | j = ksocknal_match_peerip(best_iface, peerips, n_peerips); | |
849 | peerips[j] = 0; | |
850 | } | |
851 | ||
852 | /* Overwrite input peer IP addresses */ | |
853 | memcpy(peerips, peer->ksnp_passive_ips, n_ips * sizeof(*peerips)); | |
854 | ||
855 | write_unlock_bh(global_lock); | |
856 | ||
a1f659d4 | 857 | return n_ips; |
d7e09d03 PT |
858 | } |
859 | ||
0b913529 | 860 | static void |
ff13fd40 | 861 | ksocknal_create_routes(struct ksock_peer *peer, int port, |
d7e09d03 PT |
862 | __u32 *peer_ipaddrs, int npeer_ipaddrs) |
863 | { | |
ff13fd40 | 864 | struct ksock_route *newroute = NULL; |
97d10d0a MS |
865 | rwlock_t *global_lock = &ksocknal_data.ksnd_global_lock; |
866 | lnet_ni_t *ni = peer->ksnp_ni; | |
ff13fd40 | 867 | struct ksock_net *net = ni->ni_data; |
97d10d0a | 868 | struct list_head *rtmp; |
ff13fd40 JS |
869 | struct ksock_route *route; |
870 | struct ksock_interface *iface; | |
871 | struct ksock_interface *best_iface; | |
97d10d0a MS |
872 | int best_netmatch; |
873 | int this_netmatch; | |
874 | int best_nroutes; | |
875 | int i; | |
876 | int j; | |
d7e09d03 | 877 | |
4420cfd3 JS |
878 | /* |
879 | * CAVEAT EMPTOR: We do all our interface matching with an | |
d7e09d03 PT |
880 | * exclusive hold of global lock at IRQ priority. We're only |
881 | * expecting to be dealing with small numbers of interfaces, so the | |
4420cfd3 JS |
882 | * O(n**3)-ness here shouldn't matter |
883 | */ | |
d7e09d03 PT |
884 | write_lock_bh(global_lock); |
885 | ||
886 | if (net->ksnn_ninterfaces < 2) { | |
4420cfd3 JS |
887 | /* |
888 | * Only create additional connections | |
889 | * if I have > 1 interface | |
890 | */ | |
d7e09d03 PT |
891 | write_unlock_bh(global_lock); |
892 | return; | |
893 | } | |
894 | ||
d4de2ab8 | 895 | LASSERT(npeer_ipaddrs <= LNET_MAX_INTERFACES); |
d7e09d03 PT |
896 | |
897 | for (i = 0; i < npeer_ipaddrs; i++) { | |
06ace26e | 898 | if (newroute) { |
d7e09d03 PT |
899 | newroute->ksnr_ipaddr = peer_ipaddrs[i]; |
900 | } else { | |
901 | write_unlock_bh(global_lock); | |
902 | ||
903 | newroute = ksocknal_create_route(peer_ipaddrs[i], port); | |
06ace26e | 904 | if (!newroute) |
d7e09d03 PT |
905 | return; |
906 | ||
907 | write_lock_bh(global_lock); | |
908 | } | |
909 | ||
910 | if (peer->ksnp_closing) { | |
911 | /* peer got closed under me */ | |
912 | break; | |
913 | } | |
914 | ||
915 | /* Already got a route? */ | |
916 | route = NULL; | |
917 | list_for_each(rtmp, &peer->ksnp_routes) { | |
ff13fd40 | 918 | route = list_entry(rtmp, struct ksock_route, ksnr_list); |
d7e09d03 PT |
919 | |
920 | if (route->ksnr_ipaddr == newroute->ksnr_ipaddr) | |
921 | break; | |
922 | ||
923 | route = NULL; | |
924 | } | |
06ace26e | 925 | if (route) |
d7e09d03 PT |
926 | continue; |
927 | ||
928 | best_iface = NULL; | |
929 | best_nroutes = 0; | |
930 | best_netmatch = 0; | |
931 | ||
d4de2ab8 | 932 | LASSERT(net->ksnn_ninterfaces <= LNET_MAX_INTERFACES); |
d7e09d03 PT |
933 | |
934 | /* Select interface to connect from */ | |
935 | for (j = 0; j < net->ksnn_ninterfaces; j++) { | |
936 | iface = &net->ksnn_interfaces[j]; | |
937 | ||
938 | /* Using this interface already? */ | |
939 | list_for_each(rtmp, &peer->ksnp_routes) { | |
ff13fd40 | 940 | route = list_entry(rtmp, struct ksock_route, |
c314c319 | 941 | ksnr_list); |
d7e09d03 PT |
942 | |
943 | if (route->ksnr_myipaddr == iface->ksni_ipaddr) | |
944 | break; | |
945 | ||
946 | route = NULL; | |
947 | } | |
06ace26e | 948 | if (route) |
d7e09d03 PT |
949 | continue; |
950 | ||
5fd88337 | 951 | this_netmatch = (!((iface->ksni_ipaddr ^ |
d7e09d03 | 952 | newroute->ksnr_ipaddr) & |
5fd88337 | 953 | iface->ksni_netmask)) ? 1 : 0; |
d7e09d03 | 954 | |
06ace26e | 955 | if (!(!best_iface || |
d7e09d03 PT |
956 | best_netmatch < this_netmatch || |
957 | (best_netmatch == this_netmatch && | |
958 | best_nroutes > iface->ksni_nroutes))) | |
959 | continue; | |
960 | ||
961 | best_iface = iface; | |
962 | best_netmatch = this_netmatch; | |
963 | best_nroutes = iface->ksni_nroutes; | |
964 | } | |
965 | ||
06ace26e | 966 | if (!best_iface) |
d7e09d03 PT |
967 | continue; |
968 | ||
969 | newroute->ksnr_myipaddr = best_iface->ksni_ipaddr; | |
970 | best_iface->ksni_nroutes++; | |
971 | ||
972 | ksocknal_add_route_locked(peer, newroute); | |
973 | newroute = NULL; | |
974 | } | |
975 | ||
976 | write_unlock_bh(global_lock); | |
06ace26e | 977 | if (newroute) |
d7e09d03 PT |
978 | ksocknal_route_decref(newroute); |
979 | } | |
980 | ||
981 | int | |
d4de2ab8 | 982 | ksocknal_accept(lnet_ni_t *ni, struct socket *sock) |
d7e09d03 | 983 | { |
ff13fd40 | 984 | struct ksock_connreq *cr; |
97d10d0a MS |
985 | int rc; |
986 | __u32 peer_ip; | |
987 | int peer_port; | |
d7e09d03 | 988 | |
1ad6a73e | 989 | rc = lnet_sock_getaddr(sock, 1, &peer_ip, &peer_port); |
5fd88337 | 990 | LASSERT(!rc); /* we succeeded before */ |
d7e09d03 PT |
991 | |
992 | LIBCFS_ALLOC(cr, sizeof(*cr)); | |
06ace26e | 993 | if (!cr) { |
2d00bd17 | 994 | LCONSOLE_ERROR_MSG(0x12f, "Dropping connection request from %pI4h: memory exhausted\n", |
5e8f6920 | 995 | &peer_ip); |
d7e09d03 PT |
996 | return -ENOMEM; |
997 | } | |
998 | ||
999 | lnet_ni_addref(ni); | |
1000 | cr->ksncr_ni = ni; | |
1001 | cr->ksncr_sock = sock; | |
1002 | ||
1003 | spin_lock_bh(&ksocknal_data.ksnd_connd_lock); | |
1004 | ||
1005 | list_add_tail(&cr->ksncr_list, &ksocknal_data.ksnd_connd_connreqs); | |
1006 | wake_up(&ksocknal_data.ksnd_connd_waitq); | |
1007 | ||
1008 | spin_unlock_bh(&ksocknal_data.ksnd_connd_lock); | |
1009 | return 0; | |
1010 | } | |
1011 | ||
0b913529 | 1012 | static int |
ff13fd40 | 1013 | ksocknal_connecting(struct ksock_peer *peer, __u32 ipaddr) |
d7e09d03 | 1014 | { |
ff13fd40 | 1015 | struct ksock_route *route; |
d7e09d03 | 1016 | |
d4de2ab8 | 1017 | list_for_each_entry(route, &peer->ksnp_routes, ksnr_list) { |
d7e09d03 PT |
1018 | if (route->ksnr_ipaddr == ipaddr) |
1019 | return route->ksnr_connecting; | |
1020 | } | |
1021 | return 0; | |
1022 | } | |
1023 | ||
1024 | int | |
ff13fd40 | 1025 | ksocknal_create_conn(lnet_ni_t *ni, struct ksock_route *route, |
c314c319 | 1026 | struct socket *sock, int type) |
d7e09d03 | 1027 | { |
97d10d0a | 1028 | rwlock_t *global_lock = &ksocknal_data.ksnd_global_lock; |
d4de2ab8 | 1029 | LIST_HEAD(zombies); |
97d10d0a MS |
1030 | lnet_process_id_t peerid; |
1031 | struct list_head *tmp; | |
1032 | __u64 incarnation; | |
ff13fd40 JS |
1033 | struct ksock_conn *conn; |
1034 | struct ksock_conn *conn2; | |
1035 | struct ksock_peer *peer = NULL; | |
1036 | struct ksock_peer *peer2; | |
1037 | struct ksock_sched *sched; | |
d7e09d03 | 1038 | ksock_hello_msg_t *hello; |
97d10d0a | 1039 | int cpt; |
ff13fd40 JS |
1040 | struct ksock_tx *tx; |
1041 | struct ksock_tx *txtmp; | |
97d10d0a MS |
1042 | int rc; |
1043 | int active; | |
1044 | char *warn = NULL; | |
d7e09d03 | 1045 | |
06ace26e | 1046 | active = !!route; |
d7e09d03 | 1047 | |
d4de2ab8 | 1048 | LASSERT(active == (type != SOCKLND_CONN_NONE)); |
d7e09d03 PT |
1049 | |
1050 | LIBCFS_ALLOC(conn, sizeof(*conn)); | |
06ace26e | 1051 | if (!conn) { |
d7e09d03 PT |
1052 | rc = -ENOMEM; |
1053 | goto failed_0; | |
1054 | } | |
1055 | ||
d7e09d03 PT |
1056 | conn->ksnc_peer = NULL; |
1057 | conn->ksnc_route = NULL; | |
1058 | conn->ksnc_sock = sock; | |
4420cfd3 JS |
1059 | /* |
1060 | * 2 ref, 1 for conn, another extra ref prevents socket | |
1061 | * being closed before establishment of connection | |
1062 | */ | |
d4de2ab8 | 1063 | atomic_set(&conn->ksnc_sock_refcount, 2); |
d7e09d03 PT |
1064 | conn->ksnc_type = type; |
1065 | ksocknal_lib_save_callback(sock, conn); | |
d4de2ab8 | 1066 | atomic_set(&conn->ksnc_conn_refcount, 1); /* 1 ref for me */ |
d7e09d03 PT |
1067 | |
1068 | conn->ksnc_rx_ready = 0; | |
1069 | conn->ksnc_rx_scheduled = 0; | |
1070 | ||
d4de2ab8 | 1071 | INIT_LIST_HEAD(&conn->ksnc_tx_queue); |
d7e09d03 PT |
1072 | conn->ksnc_tx_ready = 0; |
1073 | conn->ksnc_tx_scheduled = 0; | |
1074 | conn->ksnc_tx_carrier = NULL; | |
d4de2ab8 | 1075 | atomic_set(&conn->ksnc_tx_nob, 0); |
d7e09d03 PT |
1076 | |
1077 | LIBCFS_ALLOC(hello, offsetof(ksock_hello_msg_t, | |
1078 | kshm_ips[LNET_MAX_INTERFACES])); | |
06ace26e | 1079 | if (!hello) { |
d7e09d03 PT |
1080 | rc = -ENOMEM; |
1081 | goto failed_1; | |
1082 | } | |
1083 | ||
1084 | /* stash conn's local and remote addrs */ | |
d4de2ab8 | 1085 | rc = ksocknal_lib_get_conn_addrs(conn); |
5fd88337 | 1086 | if (rc) |
d7e09d03 PT |
1087 | goto failed_1; |
1088 | ||
4420cfd3 JS |
1089 | /* |
1090 | * Find out/confirm peer's NID and connection type and get the | |
d7e09d03 PT |
1091 | * vector of interfaces she's willing to let me connect to. |
1092 | * Passive connections use the listener timeout since the peer sends | |
4420cfd3 JS |
1093 | * eagerly |
1094 | */ | |
d7e09d03 PT |
1095 | if (active) { |
1096 | peer = route->ksnr_peer; | |
1097 | LASSERT(ni == peer->ksnp_ni); | |
1098 | ||
1099 | /* Active connection sends HELLO eagerly */ | |
1100 | hello->kshm_nips = ksocknal_local_ipvec(ni, hello->kshm_ips); | |
1101 | peerid = peer->ksnp_id; | |
1102 | ||
1103 | write_lock_bh(global_lock); | |
1104 | conn->ksnc_proto = peer->ksnp_proto; | |
1105 | write_unlock_bh(global_lock); | |
1106 | ||
06ace26e | 1107 | if (!conn->ksnc_proto) { |
d7e09d03 PT |
1108 | conn->ksnc_proto = &ksocknal_protocol_v3x; |
1109 | #if SOCKNAL_VERSION_DEBUG | |
1110 | if (*ksocknal_tunables.ksnd_protocol == 2) | |
1111 | conn->ksnc_proto = &ksocknal_protocol_v2x; | |
1112 | else if (*ksocknal_tunables.ksnd_protocol == 1) | |
1113 | conn->ksnc_proto = &ksocknal_protocol_v1x; | |
1114 | #endif | |
1115 | } | |
1116 | ||
d4de2ab8 | 1117 | rc = ksocknal_send_hello(ni, conn, peerid.nid, hello); |
5fd88337 | 1118 | if (rc) |
d7e09d03 PT |
1119 | goto failed_1; |
1120 | } else { | |
1121 | peerid.nid = LNET_NID_ANY; | |
1122 | peerid.pid = LNET_PID_ANY; | |
1123 | ||
1124 | /* Passive, get protocol from peer */ | |
1125 | conn->ksnc_proto = NULL; | |
1126 | } | |
1127 | ||
d4de2ab8 | 1128 | rc = ksocknal_recv_hello(ni, conn, hello, &peerid, &incarnation); |
d7e09d03 PT |
1129 | if (rc < 0) |
1130 | goto failed_1; | |
1131 | ||
5fd88337 | 1132 | LASSERT(!rc || active); |
06ace26e | 1133 | LASSERT(conn->ksnc_proto); |
d4de2ab8 | 1134 | LASSERT(peerid.nid != LNET_NID_ANY); |
d7e09d03 PT |
1135 | |
1136 | cpt = lnet_cpt_of_nid(peerid.nid); | |
1137 | ||
1138 | if (active) { | |
1139 | ksocknal_peer_addref(peer); | |
1140 | write_lock_bh(global_lock); | |
1141 | } else { | |
1142 | rc = ksocknal_create_peer(&peer, ni, peerid); | |
5fd88337 | 1143 | if (rc) |
d7e09d03 PT |
1144 | goto failed_1; |
1145 | ||
1146 | write_lock_bh(global_lock); | |
1147 | ||
1148 | /* called with a ref on ni, so shutdown can't have started */ | |
9797fb0e | 1149 | LASSERT(!((struct ksock_net *)ni->ni_data)->ksnn_shutdown); |
d7e09d03 PT |
1150 | |
1151 | peer2 = ksocknal_find_peer_locked(ni, peerid); | |
06ace26e | 1152 | if (!peer2) { |
4420cfd3 JS |
1153 | /* |
1154 | * NB this puts an "empty" peer in the peer | |
1155 | * table (which takes my ref) | |
1156 | */ | |
d7e09d03 | 1157 | list_add_tail(&peer->ksnp_list, |
c314c319 | 1158 | ksocknal_nid2peerlist(peerid.nid)); |
d7e09d03 PT |
1159 | } else { |
1160 | ksocknal_peer_decref(peer); | |
1161 | peer = peer2; | |
1162 | } | |
1163 | ||
1164 | /* +1 ref for me */ | |
1165 | ksocknal_peer_addref(peer); | |
1166 | peer->ksnp_accepting++; | |
1167 | ||
4420cfd3 JS |
1168 | /* |
1169 | * Am I already connecting to this guy? Resolve in | |
1170 | * favour of higher NID... | |
1171 | */ | |
d7e09d03 PT |
1172 | if (peerid.nid < ni->ni_nid && |
1173 | ksocknal_connecting(peer, conn->ksnc_ipaddr)) { | |
1174 | rc = EALREADY; | |
1175 | warn = "connection race resolution"; | |
1176 | goto failed_2; | |
1177 | } | |
1178 | } | |
1179 | ||
1180 | if (peer->ksnp_closing || | |
1181 | (active && route->ksnr_deleted)) { | |
1182 | /* peer/route got closed under me */ | |
1183 | rc = -ESTALE; | |
1184 | warn = "peer/route removed"; | |
1185 | goto failed_2; | |
1186 | } | |
1187 | ||
06ace26e | 1188 | if (!peer->ksnp_proto) { |
4420cfd3 JS |
1189 | /* |
1190 | * Never connected before. | |
d7e09d03 PT |
1191 | * NB recv_hello may have returned EPROTO to signal my peer |
1192 | * wants a different protocol than the one I asked for. | |
1193 | */ | |
d4de2ab8 | 1194 | LASSERT(list_empty(&peer->ksnp_conns)); |
d7e09d03 PT |
1195 | |
1196 | peer->ksnp_proto = conn->ksnc_proto; | |
1197 | peer->ksnp_incarnation = incarnation; | |
1198 | } | |
1199 | ||
1200 | if (peer->ksnp_proto != conn->ksnc_proto || | |
1201 | peer->ksnp_incarnation != incarnation) { | |
1202 | /* Peer rebooted or I've got the wrong protocol version */ | |
1203 | ksocknal_close_peer_conns_locked(peer, 0, 0); | |
1204 | ||
1205 | peer->ksnp_proto = NULL; | |
1206 | rc = ESTALE; | |
1207 | warn = peer->ksnp_incarnation != incarnation ? | |
1208 | "peer rebooted" : | |
1209 | "wrong proto version"; | |
1210 | goto failed_2; | |
1211 | } | |
1212 | ||
1213 | switch (rc) { | |
1214 | default: | |
1215 | LBUG(); | |
1216 | case 0: | |
1217 | break; | |
1218 | case EALREADY: | |
1219 | warn = "lost conn race"; | |
1220 | goto failed_2; | |
1221 | case EPROTO: | |
1222 | warn = "retry with different protocol version"; | |
1223 | goto failed_2; | |
1224 | } | |
1225 | ||
4420cfd3 JS |
1226 | /* |
1227 | * Refuse to duplicate an existing connection, unless this is a | |
1228 | * loopback connection | |
1229 | */ | |
d7e09d03 PT |
1230 | if (conn->ksnc_ipaddr != conn->ksnc_myipaddr) { |
1231 | list_for_each(tmp, &peer->ksnp_conns) { | |
ff13fd40 | 1232 | conn2 = list_entry(tmp, struct ksock_conn, ksnc_list); |
d7e09d03 PT |
1233 | |
1234 | if (conn2->ksnc_ipaddr != conn->ksnc_ipaddr || | |
1235 | conn2->ksnc_myipaddr != conn->ksnc_myipaddr || | |
1236 | conn2->ksnc_type != conn->ksnc_type) | |
1237 | continue; | |
1238 | ||
4420cfd3 JS |
1239 | /* |
1240 | * Reply on a passive connection attempt so the peer | |
1241 | * realises we're connected. | |
1242 | */ | |
5fd88337 | 1243 | LASSERT(!rc); |
d7e09d03 PT |
1244 | if (!active) |
1245 | rc = EALREADY; | |
1246 | ||
1247 | warn = "duplicate"; | |
1248 | goto failed_2; | |
1249 | } | |
1250 | } | |
1251 | ||
4420cfd3 JS |
1252 | /* |
1253 | * If the connection created by this route didn't bind to the IP | |
d7e09d03 | 1254 | * address the route connected to, the connection/route matching |
4420cfd3 JS |
1255 | * code below probably isn't going to work. |
1256 | */ | |
d7e09d03 PT |
1257 | if (active && |
1258 | route->ksnr_ipaddr != conn->ksnc_ipaddr) { | |
5e8f6920 | 1259 | CERROR("Route %s %pI4h connected to %pI4h\n", |
d7e09d03 | 1260 | libcfs_id2str(peer->ksnp_id), |
5e8f6920 PT |
1261 | &route->ksnr_ipaddr, |
1262 | &conn->ksnc_ipaddr); | |
d7e09d03 PT |
1263 | } |
1264 | ||
4420cfd3 JS |
1265 | /* |
1266 | * Search for a route corresponding to the new connection and | |
d7e09d03 PT |
1267 | * create an association. This allows incoming connections created |
1268 | * by routes in my peer to match my own route entries so I don't | |
4420cfd3 JS |
1269 | * continually create duplicate routes. |
1270 | */ | |
d4de2ab8 | 1271 | list_for_each(tmp, &peer->ksnp_routes) { |
ff13fd40 | 1272 | route = list_entry(tmp, struct ksock_route, ksnr_list); |
d7e09d03 PT |
1273 | |
1274 | if (route->ksnr_ipaddr != conn->ksnc_ipaddr) | |
1275 | continue; | |
1276 | ||
1277 | ksocknal_associate_route_conn_locked(route, conn); | |
1278 | break; | |
1279 | } | |
1280 | ||
1281 | conn->ksnc_peer = peer; /* conn takes my ref on peer */ | |
1282 | peer->ksnp_last_alive = cfs_time_current(); | |
1283 | peer->ksnp_send_keepalive = 0; | |
1284 | peer->ksnp_error = 0; | |
1285 | ||
1286 | sched = ksocknal_choose_scheduler_locked(cpt); | |
1287 | sched->kss_nconns++; | |
1288 | conn->ksnc_scheduler = sched; | |
1289 | ||
1290 | conn->ksnc_tx_last_post = cfs_time_current(); | |
1291 | /* Set the deadline for the outgoing HELLO to drain */ | |
fb4a1539 | 1292 | conn->ksnc_tx_bufnob = sock->sk->sk_wmem_queued; |
d7e09d03 PT |
1293 | conn->ksnc_tx_deadline = cfs_time_shift(*ksocknal_tunables.ksnd_timeout); |
1294 | mb(); /* order with adding to peer's conn list */ | |
1295 | ||
d4de2ab8 | 1296 | list_add(&conn->ksnc_list, &peer->ksnp_conns); |
d7e09d03 PT |
1297 | ksocknal_conn_addref(conn); |
1298 | ||
1299 | ksocknal_new_packet(conn, 0); | |
1300 | ||
1301 | conn->ksnc_zc_capable = ksocknal_lib_zc_capable(conn); | |
1302 | ||
1303 | /* Take packets blocking for this connection. */ | |
1304 | list_for_each_entry_safe(tx, txtmp, &peer->ksnp_tx_queue, tx_list) { | |
1305 | if (conn->ksnc_proto->pro_match_tx(conn, tx, tx->tx_nonblk) == SOCKNAL_MATCH_NO) | |
1306 | continue; | |
1307 | ||
d4de2ab8 HE |
1308 | list_del(&tx->tx_list); |
1309 | ksocknal_queue_tx_locked(tx, conn); | |
d7e09d03 PT |
1310 | } |
1311 | ||
1312 | write_unlock_bh(global_lock); | |
1313 | ||
4420cfd3 JS |
1314 | /* |
1315 | * We've now got a new connection. Any errors from here on are just | |
d7e09d03 PT |
1316 | * like "normal" comms errors and we close the connection normally. |
1317 | * NB (a) we still have to send the reply HELLO for passive | |
1318 | * connections, | |
1319 | * (b) normal I/O on the conn is blocked until I setup and call the | |
1320 | * socket callbacks. | |
1321 | */ | |
2d00bd17 | 1322 | CDEBUG(D_NET, "New conn %s p %d.x %pI4h -> %pI4h/%d incarnation:%lld sched[%d:%d]\n", |
d7e09d03 | 1323 | libcfs_id2str(peerid), conn->ksnc_proto->pro_version, |
5e8f6920 | 1324 | &conn->ksnc_myipaddr, &conn->ksnc_ipaddr, |
d7e09d03 PT |
1325 | conn->ksnc_port, incarnation, cpt, |
1326 | (int)(sched - &sched->kss_info->ksi_scheds[0])); | |
1327 | ||
1328 | if (active) { | |
1329 | /* additional routes after interface exchange? */ | |
1330 | ksocknal_create_routes(peer, conn->ksnc_port, | |
1331 | hello->kshm_ips, hello->kshm_nips); | |
1332 | } else { | |
1333 | hello->kshm_nips = ksocknal_select_ips(peer, hello->kshm_ips, | |
1334 | hello->kshm_nips); | |
1335 | rc = ksocknal_send_hello(ni, conn, peerid.nid, hello); | |
1336 | } | |
1337 | ||
1338 | LIBCFS_FREE(hello, offsetof(ksock_hello_msg_t, | |
1339 | kshm_ips[LNET_MAX_INTERFACES])); | |
1340 | ||
4420cfd3 JS |
1341 | /* |
1342 | * setup the socket AFTER I've received hello (it disables | |
d7e09d03 PT |
1343 | * SO_LINGER). I might call back to the acceptor who may want |
1344 | * to send a protocol version response and then close the | |
1345 | * socket; this ensures the socket only tears down after the | |
4420cfd3 JS |
1346 | * response has been sent. |
1347 | */ | |
5fd88337 | 1348 | if (!rc) |
d7e09d03 PT |
1349 | rc = ksocknal_lib_setup_sock(sock); |
1350 | ||
1351 | write_lock_bh(global_lock); | |
1352 | ||
1353 | /* NB my callbacks block while I hold ksnd_global_lock */ | |
1354 | ksocknal_lib_set_callback(sock, conn); | |
1355 | ||
1356 | if (!active) | |
1357 | peer->ksnp_accepting--; | |
1358 | ||
1359 | write_unlock_bh(global_lock); | |
1360 | ||
5fd88337 | 1361 | if (rc) { |
d7e09d03 PT |
1362 | write_lock_bh(global_lock); |
1363 | if (!conn->ksnc_closing) { | |
1364 | /* could be closed by another thread */ | |
1365 | ksocknal_close_conn_locked(conn, rc); | |
1366 | } | |
1367 | write_unlock_bh(global_lock); | |
5fd88337 | 1368 | } else if (!ksocknal_connsock_addref(conn)) { |
d7e09d03 PT |
1369 | /* Allow I/O to proceed. */ |
1370 | ksocknal_read_callback(conn); | |
1371 | ksocknal_write_callback(conn); | |
1372 | ksocknal_connsock_decref(conn); | |
1373 | } | |
1374 | ||
1375 | ksocknal_connsock_decref(conn); | |
1376 | ksocknal_conn_decref(conn); | |
1377 | return rc; | |
1378 | ||
1379 | failed_2: | |
1380 | if (!peer->ksnp_closing && | |
d4de2ab8 HE |
1381 | list_empty(&peer->ksnp_conns) && |
1382 | list_empty(&peer->ksnp_routes)) { | |
d7e09d03 PT |
1383 | list_add(&zombies, &peer->ksnp_tx_queue); |
1384 | list_del_init(&peer->ksnp_tx_queue); | |
1385 | ksocknal_unlink_peer_locked(peer); | |
1386 | } | |
1387 | ||
1388 | write_unlock_bh(global_lock); | |
1389 | ||
06ace26e | 1390 | if (warn) { |
d7e09d03 PT |
1391 | if (rc < 0) |
1392 | CERROR("Not creating conn %s type %d: %s\n", | |
1393 | libcfs_id2str(peerid), conn->ksnc_type, warn); | |
1394 | else | |
1395 | CDEBUG(D_NET, "Not creating conn %s type %d: %s\n", | |
c314c319 | 1396 | libcfs_id2str(peerid), conn->ksnc_type, warn); |
d7e09d03 PT |
1397 | } |
1398 | ||
1399 | if (!active) { | |
1400 | if (rc > 0) { | |
4420cfd3 JS |
1401 | /* |
1402 | * Request retry by replying with CONN_NONE | |
1403 | * ksnc_proto has been set already | |
1404 | */ | |
d7e09d03 PT |
1405 | conn->ksnc_type = SOCKLND_CONN_NONE; |
1406 | hello->kshm_nips = 0; | |
1407 | ksocknal_send_hello(ni, conn, peerid.nid, hello); | |
1408 | } | |
1409 | ||
1410 | write_lock_bh(global_lock); | |
1411 | peer->ksnp_accepting--; | |
1412 | write_unlock_bh(global_lock); | |
1413 | } | |
1414 | ||
1415 | ksocknal_txlist_done(ni, &zombies, 1); | |
1416 | ksocknal_peer_decref(peer); | |
1417 | ||
73092892 | 1418 | failed_1: |
06ace26e | 1419 | if (hello) |
d7e09d03 PT |
1420 | LIBCFS_FREE(hello, offsetof(ksock_hello_msg_t, |
1421 | kshm_ips[LNET_MAX_INTERFACES])); | |
1422 | ||
d4de2ab8 | 1423 | LIBCFS_FREE(conn, sizeof(*conn)); |
d7e09d03 | 1424 | |
73092892 | 1425 | failed_0: |
e52fc91d | 1426 | sock_release(sock); |
d7e09d03 PT |
1427 | return rc; |
1428 | } | |
1429 | ||
1430 | void | |
ff13fd40 | 1431 | ksocknal_close_conn_locked(struct ksock_conn *conn, int error) |
d7e09d03 | 1432 | { |
4420cfd3 JS |
1433 | /* |
1434 | * This just does the immmediate housekeeping, and queues the | |
d7e09d03 | 1435 | * connection for the reaper to terminate. |
4420cfd3 JS |
1436 | * Caller holds ksnd_global_lock exclusively in irq context |
1437 | */ | |
ff13fd40 JS |
1438 | struct ksock_peer *peer = conn->ksnc_peer; |
1439 | struct ksock_route *route; | |
1440 | struct ksock_conn *conn2; | |
97d10d0a | 1441 | struct list_head *tmp; |
d7e09d03 | 1442 | |
5fd88337 | 1443 | LASSERT(!peer->ksnp_error); |
d4de2ab8 | 1444 | LASSERT(!conn->ksnc_closing); |
d7e09d03 PT |
1445 | conn->ksnc_closing = 1; |
1446 | ||
1447 | /* ksnd_deathrow_conns takes over peer's ref */ | |
d4de2ab8 | 1448 | list_del(&conn->ksnc_list); |
d7e09d03 PT |
1449 | |
1450 | route = conn->ksnc_route; | |
06ace26e | 1451 | if (route) { |
d7e09d03 | 1452 | /* dissociate conn from route... */ |
d4de2ab8 | 1453 | LASSERT(!route->ksnr_deleted); |
5fd88337 | 1454 | LASSERT(route->ksnr_connected & (1 << conn->ksnc_type)); |
d7e09d03 PT |
1455 | |
1456 | conn2 = NULL; | |
1457 | list_for_each(tmp, &peer->ksnp_conns) { | |
ff13fd40 | 1458 | conn2 = list_entry(tmp, struct ksock_conn, ksnc_list); |
d7e09d03 PT |
1459 | |
1460 | if (conn2->ksnc_route == route && | |
1461 | conn2->ksnc_type == conn->ksnc_type) | |
1462 | break; | |
1463 | ||
1464 | conn2 = NULL; | |
1465 | } | |
06ace26e | 1466 | if (!conn2) |
d7e09d03 PT |
1467 | route->ksnr_connected &= ~(1 << conn->ksnc_type); |
1468 | ||
1469 | conn->ksnc_route = NULL; | |
1470 | ||
d7e09d03 PT |
1471 | ksocknal_route_decref(route); /* drop conn's ref on route */ |
1472 | } | |
1473 | ||
d4de2ab8 | 1474 | if (list_empty(&peer->ksnp_conns)) { |
d7e09d03 PT |
1475 | /* No more connections to this peer */ |
1476 | ||
1477 | if (!list_empty(&peer->ksnp_tx_queue)) { | |
ff13fd40 | 1478 | struct ksock_tx *tx; |
d7e09d03 | 1479 | |
d4de2ab8 | 1480 | LASSERT(conn->ksnc_proto == &ksocknal_protocol_v3x); |
d7e09d03 | 1481 | |
4420cfd3 JS |
1482 | /* |
1483 | * throw them to the last connection..., | |
1484 | * these TXs will be send to /dev/null by scheduler | |
1485 | */ | |
d7e09d03 | 1486 | list_for_each_entry(tx, &peer->ksnp_tx_queue, |
c314c319 | 1487 | tx_list) |
d7e09d03 PT |
1488 | ksocknal_tx_prep(conn, tx); |
1489 | ||
1490 | spin_lock_bh(&conn->ksnc_scheduler->kss_lock); | |
1491 | list_splice_init(&peer->ksnp_tx_queue, | |
c314c319 | 1492 | &conn->ksnc_tx_queue); |
d7e09d03 PT |
1493 | spin_unlock_bh(&conn->ksnc_scheduler->kss_lock); |
1494 | } | |
1495 | ||
1496 | peer->ksnp_proto = NULL; /* renegotiate protocol version */ | |
1497 | peer->ksnp_error = error; /* stash last conn close reason */ | |
1498 | ||
d4de2ab8 | 1499 | if (list_empty(&peer->ksnp_routes)) { |
4420cfd3 JS |
1500 | /* |
1501 | * I've just closed last conn belonging to a | |
1502 | * peer with no routes to it | |
1503 | */ | |
d4de2ab8 | 1504 | ksocknal_unlink_peer_locked(peer); |
d7e09d03 PT |
1505 | } |
1506 | } | |
1507 | ||
1508 | spin_lock_bh(&ksocknal_data.ksnd_reaper_lock); | |
1509 | ||
1510 | list_add_tail(&conn->ksnc_list, | |
c314c319 | 1511 | &ksocknal_data.ksnd_deathrow_conns); |
d7e09d03 PT |
1512 | wake_up(&ksocknal_data.ksnd_reaper_waitq); |
1513 | ||
1514 | spin_unlock_bh(&ksocknal_data.ksnd_reaper_lock); | |
1515 | } | |
1516 | ||
1517 | void | |
ff13fd40 | 1518 | ksocknal_peer_failed(struct ksock_peer *peer) |
d7e09d03 | 1519 | { |
97d10d0a | 1520 | int notify = 0; |
a649ad1d | 1521 | unsigned long last_alive = 0; |
d7e09d03 | 1522 | |
4420cfd3 JS |
1523 | /* |
1524 | * There has been a connection failure or comms error; but I'll only | |
d7e09d03 | 1525 | * tell LNET I think the peer is dead if it's to another kernel and |
4420cfd3 JS |
1526 | * there are no connections or connection attempts in existence. |
1527 | */ | |
d7e09d03 PT |
1528 | read_lock(&ksocknal_data.ksnd_global_lock); |
1529 | ||
5fd88337 | 1530 | if (!(peer->ksnp_id.pid & LNET_PID_USERFLAG) && |
d7e09d03 | 1531 | list_empty(&peer->ksnp_conns) && |
5fd88337 | 1532 | !peer->ksnp_accepting && |
06ace26e | 1533 | !ksocknal_find_connecting_route_locked(peer)) { |
d7e09d03 PT |
1534 | notify = 1; |
1535 | last_alive = peer->ksnp_last_alive; | |
1536 | } | |
1537 | ||
1538 | read_unlock(&ksocknal_data.ksnd_global_lock); | |
1539 | ||
1540 | if (notify) | |
d4de2ab8 | 1541 | lnet_notify(peer->ksnp_ni, peer->ksnp_id.nid, 0, |
c314c319 | 1542 | last_alive); |
d7e09d03 PT |
1543 | } |
1544 | ||
1545 | void | |
ff13fd40 | 1546 | ksocknal_finalize_zcreq(struct ksock_conn *conn) |
d7e09d03 | 1547 | { |
ff13fd40 JS |
1548 | struct ksock_peer *peer = conn->ksnc_peer; |
1549 | struct ksock_tx *tx; | |
1550 | struct ksock_tx *temp; | |
1551 | struct ksock_tx *tmp; | |
d4de2ab8 | 1552 | LIST_HEAD(zlist); |
d7e09d03 | 1553 | |
4420cfd3 JS |
1554 | /* |
1555 | * NB safe to finalize TXs because closing of socket will | |
1556 | * abort all buffered data | |
1557 | */ | |
06ace26e | 1558 | LASSERT(!conn->ksnc_sock); |
d7e09d03 PT |
1559 | |
1560 | spin_lock(&peer->ksnp_lock); | |
1561 | ||
1562 | list_for_each_entry_safe(tx, tmp, &peer->ksnp_zc_req_list, tx_zc_list) { | |
1563 | if (tx->tx_conn != conn) | |
1564 | continue; | |
1565 | ||
5fd88337 | 1566 | LASSERT(tx->tx_msg.ksm_zc_cookies[0]); |
d7e09d03 PT |
1567 | |
1568 | tx->tx_msg.ksm_zc_cookies[0] = 0; | |
1569 | tx->tx_zc_aborted = 1; /* mark it as not-acked */ | |
1570 | list_del(&tx->tx_zc_list); | |
1571 | list_add(&tx->tx_zc_list, &zlist); | |
1572 | } | |
1573 | ||
1574 | spin_unlock(&peer->ksnp_lock); | |
1575 | ||
2aff15d4 | 1576 | list_for_each_entry_safe(tx, temp, &zlist, tx_zc_list) { |
d7e09d03 PT |
1577 | list_del(&tx->tx_zc_list); |
1578 | ksocknal_tx_decref(tx); | |
1579 | } | |
1580 | } | |
1581 | ||
1582 | void | |
ff13fd40 | 1583 | ksocknal_terminate_conn(struct ksock_conn *conn) |
d7e09d03 | 1584 | { |
4420cfd3 JS |
1585 | /* |
1586 | * This gets called by the reaper (guaranteed thread context) to | |
d7e09d03 PT |
1587 | * disengage the socket from its callbacks and close it. |
1588 | * ksnc_refcount will eventually hit zero, and then the reaper will | |
4420cfd3 JS |
1589 | * destroy it. |
1590 | */ | |
ff13fd40 JS |
1591 | struct ksock_peer *peer = conn->ksnc_peer; |
1592 | struct ksock_sched *sched = conn->ksnc_scheduler; | |
97d10d0a | 1593 | int failed = 0; |
d7e09d03 PT |
1594 | |
1595 | LASSERT(conn->ksnc_closing); | |
1596 | ||
1597 | /* wake up the scheduler to "send" all remaining packets to /dev/null */ | |
1598 | spin_lock_bh(&sched->kss_lock); | |
1599 | ||
1600 | /* a closing conn is always ready to tx */ | |
1601 | conn->ksnc_tx_ready = 1; | |
1602 | ||
1603 | if (!conn->ksnc_tx_scheduled && | |
991cc8d6 | 1604 | !list_empty(&conn->ksnc_tx_queue)) { |
d4de2ab8 | 1605 | list_add_tail(&conn->ksnc_tx_list, |
c314c319 | 1606 | &sched->kss_tx_conns); |
d7e09d03 PT |
1607 | conn->ksnc_tx_scheduled = 1; |
1608 | /* extra ref for scheduler */ | |
1609 | ksocknal_conn_addref(conn); | |
1610 | ||
d4de2ab8 | 1611 | wake_up(&sched->kss_waitq); |
d7e09d03 PT |
1612 | } |
1613 | ||
1614 | spin_unlock_bh(&sched->kss_lock); | |
1615 | ||
1616 | /* serialise with callbacks */ | |
1617 | write_lock_bh(&ksocknal_data.ksnd_global_lock); | |
1618 | ||
1619 | ksocknal_lib_reset_callback(conn->ksnc_sock, conn); | |
1620 | ||
4420cfd3 JS |
1621 | /* |
1622 | * OK, so this conn may not be completely disengaged from its | |
1623 | * scheduler yet, but it _has_ committed to terminate... | |
1624 | */ | |
d7e09d03 PT |
1625 | conn->ksnc_scheduler->kss_nconns--; |
1626 | ||
5fd88337 | 1627 | if (peer->ksnp_error) { |
d7e09d03 | 1628 | /* peer's last conn closed in error */ |
d4de2ab8 | 1629 | LASSERT(list_empty(&peer->ksnp_conns)); |
d7e09d03 PT |
1630 | failed = 1; |
1631 | peer->ksnp_error = 0; /* avoid multiple notifications */ | |
1632 | } | |
1633 | ||
1634 | write_unlock_bh(&ksocknal_data.ksnd_global_lock); | |
1635 | ||
1636 | if (failed) | |
1637 | ksocknal_peer_failed(peer); | |
1638 | ||
4420cfd3 JS |
1639 | /* |
1640 | * The socket is closed on the final put; either here, or in | |
d7e09d03 PT |
1641 | * ksocknal_{send,recv}msg(). Since we set up the linger2 option |
1642 | * when the connection was established, this will close the socket | |
1643 | * immediately, aborting anything buffered in it. Any hung | |
4420cfd3 JS |
1644 | * zero-copy transmits will therefore complete in finite time. |
1645 | */ | |
d7e09d03 PT |
1646 | ksocknal_connsock_decref(conn); |
1647 | } | |
1648 | ||
1649 | void | |
ff13fd40 | 1650 | ksocknal_queue_zombie_conn(struct ksock_conn *conn) |
d7e09d03 PT |
1651 | { |
1652 | /* Queue the conn for the reaper to destroy */ | |
1653 | ||
5fd88337 | 1654 | LASSERT(!atomic_read(&conn->ksnc_conn_refcount)); |
d7e09d03 PT |
1655 | spin_lock_bh(&ksocknal_data.ksnd_reaper_lock); |
1656 | ||
1657 | list_add_tail(&conn->ksnc_list, &ksocknal_data.ksnd_zombie_conns); | |
1658 | wake_up(&ksocknal_data.ksnd_reaper_waitq); | |
1659 | ||
1660 | spin_unlock_bh(&ksocknal_data.ksnd_reaper_lock); | |
1661 | } | |
1662 | ||
1663 | void | |
ff13fd40 | 1664 | ksocknal_destroy_conn(struct ksock_conn *conn) |
d7e09d03 | 1665 | { |
97d10d0a | 1666 | unsigned long last_rcv; |
d7e09d03 PT |
1667 | |
1668 | /* Final coup-de-grace of the reaper */ | |
d4de2ab8 | 1669 | CDEBUG(D_NET, "connection %p\n", conn); |
d7e09d03 | 1670 | |
5fd88337 JS |
1671 | LASSERT(!atomic_read(&conn->ksnc_conn_refcount)); |
1672 | LASSERT(!atomic_read(&conn->ksnc_sock_refcount)); | |
06ace26e JS |
1673 | LASSERT(!conn->ksnc_sock); |
1674 | LASSERT(!conn->ksnc_route); | |
d4de2ab8 HE |
1675 | LASSERT(!conn->ksnc_tx_scheduled); |
1676 | LASSERT(!conn->ksnc_rx_scheduled); | |
1677 | LASSERT(list_empty(&conn->ksnc_tx_queue)); | |
d7e09d03 PT |
1678 | |
1679 | /* complete current receive if any */ | |
1680 | switch (conn->ksnc_rx_state) { | |
1681 | case SOCKNAL_RX_LNET_PAYLOAD: | |
1682 | last_rcv = conn->ksnc_rx_deadline - | |
1683 | cfs_time_seconds(*ksocknal_tunables.ksnd_timeout); | |
2d00bd17 | 1684 | CERROR("Completing partial receive from %s[%d], ip %pI4h:%d, with error, wanted: %d, left: %d, last alive is %ld secs ago\n", |
d7e09d03 | 1685 | libcfs_id2str(conn->ksnc_peer->ksnp_id), conn->ksnc_type, |
5e8f6920 | 1686 | &conn->ksnc_ipaddr, conn->ksnc_port, |
d7e09d03 PT |
1687 | conn->ksnc_rx_nob_wanted, conn->ksnc_rx_nob_left, |
1688 | cfs_duration_sec(cfs_time_sub(cfs_time_current(), | |
2d00bd17 | 1689 | last_rcv))); |
d4de2ab8 | 1690 | lnet_finalize(conn->ksnc_peer->ksnp_ni, |
c314c319 | 1691 | conn->ksnc_cookie, -EIO); |
d7e09d03 PT |
1692 | break; |
1693 | case SOCKNAL_RX_LNET_HEADER: | |
1694 | if (conn->ksnc_rx_started) | |
2d00bd17 | 1695 | CERROR("Incomplete receive of lnet header from %s, ip %pI4h:%d, with error, protocol: %d.x.\n", |
d7e09d03 | 1696 | libcfs_id2str(conn->ksnc_peer->ksnp_id), |
5e8f6920 | 1697 | &conn->ksnc_ipaddr, conn->ksnc_port, |
d7e09d03 PT |
1698 | conn->ksnc_proto->pro_version); |
1699 | break; | |
1700 | case SOCKNAL_RX_KSM_HEADER: | |
1701 | if (conn->ksnc_rx_started) | |
2d00bd17 | 1702 | CERROR("Incomplete receive of ksock message from %s, ip %pI4h:%d, with error, protocol: %d.x.\n", |
d7e09d03 | 1703 | libcfs_id2str(conn->ksnc_peer->ksnp_id), |
5e8f6920 | 1704 | &conn->ksnc_ipaddr, conn->ksnc_port, |
d7e09d03 PT |
1705 | conn->ksnc_proto->pro_version); |
1706 | break; | |
1707 | case SOCKNAL_RX_SLOP: | |
1708 | if (conn->ksnc_rx_started) | |
2d00bd17 | 1709 | CERROR("Incomplete receive of slops from %s, ip %pI4h:%d, with error\n", |
d7e09d03 | 1710 | libcfs_id2str(conn->ksnc_peer->ksnp_id), |
5e8f6920 | 1711 | &conn->ksnc_ipaddr, conn->ksnc_port); |
d7e09d03 PT |
1712 | break; |
1713 | default: | |
d4de2ab8 | 1714 | LBUG(); |
d7e09d03 PT |
1715 | break; |
1716 | } | |
1717 | ||
1718 | ksocknal_peer_decref(conn->ksnc_peer); | |
1719 | ||
d4de2ab8 | 1720 | LIBCFS_FREE(conn, sizeof(*conn)); |
d7e09d03 PT |
1721 | } |
1722 | ||
1723 | int | |
ff13fd40 | 1724 | ksocknal_close_peer_conns_locked(struct ksock_peer *peer, __u32 ipaddr, int why) |
d7e09d03 | 1725 | { |
ff13fd40 | 1726 | struct ksock_conn *conn; |
97d10d0a MS |
1727 | struct list_head *ctmp; |
1728 | struct list_head *cnxt; | |
1729 | int count = 0; | |
d7e09d03 | 1730 | |
d4de2ab8 | 1731 | list_for_each_safe(ctmp, cnxt, &peer->ksnp_conns) { |
ff13fd40 | 1732 | conn = list_entry(ctmp, struct ksock_conn, ksnc_list); |
d7e09d03 | 1733 | |
5fd88337 | 1734 | if (!ipaddr || conn->ksnc_ipaddr == ipaddr) { |
d7e09d03 | 1735 | count++; |
d4de2ab8 | 1736 | ksocknal_close_conn_locked(conn, why); |
d7e09d03 PT |
1737 | } |
1738 | } | |
1739 | ||
a1f659d4 | 1740 | return count; |
d7e09d03 PT |
1741 | } |
1742 | ||
1743 | int | |
ff13fd40 | 1744 | ksocknal_close_conn_and_siblings(struct ksock_conn *conn, int why) |
d7e09d03 | 1745 | { |
ff13fd40 | 1746 | struct ksock_peer *peer = conn->ksnc_peer; |
97d10d0a MS |
1747 | __u32 ipaddr = conn->ksnc_ipaddr; |
1748 | int count; | |
d7e09d03 PT |
1749 | |
1750 | write_lock_bh(&ksocknal_data.ksnd_global_lock); | |
1751 | ||
d4de2ab8 | 1752 | count = ksocknal_close_peer_conns_locked(peer, ipaddr, why); |
d7e09d03 PT |
1753 | |
1754 | write_unlock_bh(&ksocknal_data.ksnd_global_lock); | |
1755 | ||
a1f659d4 | 1756 | return count; |
d7e09d03 PT |
1757 | } |
1758 | ||
1759 | int | |
d4de2ab8 | 1760 | ksocknal_close_matching_conns(lnet_process_id_t id, __u32 ipaddr) |
d7e09d03 | 1761 | { |
ff13fd40 | 1762 | struct ksock_peer *peer; |
97d10d0a MS |
1763 | struct list_head *ptmp; |
1764 | struct list_head *pnxt; | |
1765 | int lo; | |
1766 | int hi; | |
1767 | int i; | |
1768 | int count = 0; | |
d7e09d03 PT |
1769 | |
1770 | write_lock_bh(&ksocknal_data.ksnd_global_lock); | |
1771 | ||
d3d3d37a JS |
1772 | if (id.nid != LNET_NID_ANY) { |
1773 | lo = (int)(ksocknal_nid2peerlist(id.nid) - ksocknal_data.ksnd_peers); | |
1774 | hi = (int)(ksocknal_nid2peerlist(id.nid) - ksocknal_data.ksnd_peers); | |
1775 | } else { | |
d7e09d03 PT |
1776 | lo = 0; |
1777 | hi = ksocknal_data.ksnd_peer_hash_size - 1; | |
1778 | } | |
1779 | ||
1780 | for (i = lo; i <= hi; i++) { | |
d4de2ab8 | 1781 | list_for_each_safe(ptmp, pnxt, |
c314c319 | 1782 | &ksocknal_data.ksnd_peers[i]) { |
ff13fd40 | 1783 | peer = list_entry(ptmp, struct ksock_peer, ksnp_list); |
d7e09d03 PT |
1784 | |
1785 | if (!((id.nid == LNET_NID_ANY || id.nid == peer->ksnp_id.nid) && | |
1786 | (id.pid == LNET_PID_ANY || id.pid == peer->ksnp_id.pid))) | |
1787 | continue; | |
1788 | ||
d4de2ab8 | 1789 | count += ksocknal_close_peer_conns_locked(peer, ipaddr, 0); |
d7e09d03 PT |
1790 | } |
1791 | } | |
1792 | ||
1793 | write_unlock_bh(&ksocknal_data.ksnd_global_lock); | |
1794 | ||
1795 | /* wildcards always succeed */ | |
5fd88337 | 1796 | if (id.nid == LNET_NID_ANY || id.pid == LNET_PID_ANY || !ipaddr) |
a1f659d4 | 1797 | return 0; |
d7e09d03 | 1798 | |
5fd88337 | 1799 | if (!count) |
6a123705 LN |
1800 | return -ENOENT; |
1801 | else | |
1802 | return 0; | |
d7e09d03 PT |
1803 | } |
1804 | ||
1805 | void | |
d4de2ab8 | 1806 | ksocknal_notify(lnet_ni_t *ni, lnet_nid_t gw_nid, int alive) |
d7e09d03 | 1807 | { |
4420cfd3 JS |
1808 | /* |
1809 | * The router is telling me she's been notified of a change in | |
1810 | * gateway state.... | |
1811 | */ | |
97d10d0a | 1812 | lnet_process_id_t id = {0}; |
d7e09d03 PT |
1813 | |
1814 | id.nid = gw_nid; | |
1815 | id.pid = LNET_PID_ANY; | |
1816 | ||
d4de2ab8 | 1817 | CDEBUG(D_NET, "gw %s %s\n", libcfs_nid2str(gw_nid), |
c314c319 | 1818 | alive ? "up" : "down"); |
d7e09d03 PT |
1819 | |
1820 | if (!alive) { | |
1821 | /* If the gateway crashed, close all open connections... */ | |
d4de2ab8 | 1822 | ksocknal_close_matching_conns(id, 0); |
d7e09d03 PT |
1823 | return; |
1824 | } | |
1825 | ||
4420cfd3 JS |
1826 | /* |
1827 | * ...otherwise do nothing. We can only establish new connections | |
1828 | * if we have autroutes, and these connect on demand. | |
1829 | */ | |
d7e09d03 PT |
1830 | } |
1831 | ||
1832 | void | |
d4de2ab8 | 1833 | ksocknal_query(lnet_ni_t *ni, lnet_nid_t nid, unsigned long *when) |
d7e09d03 | 1834 | { |
97d10d0a MS |
1835 | int connect = 1; |
1836 | unsigned long last_alive = 0; | |
1837 | unsigned long now = cfs_time_current(); | |
ff13fd40 | 1838 | struct ksock_peer *peer = NULL; |
97d10d0a | 1839 | rwlock_t *glock = &ksocknal_data.ksnd_global_lock; |
fe7cb65d JH |
1840 | lnet_process_id_t id = { |
1841 | .nid = nid, | |
1842 | .pid = LNET_PID_LUSTRE, | |
1843 | }; | |
d7e09d03 PT |
1844 | |
1845 | read_lock(glock); | |
1846 | ||
1847 | peer = ksocknal_find_peer_locked(ni, id); | |
06ace26e | 1848 | if (peer) { |
97d10d0a | 1849 | struct list_head *tmp; |
ff13fd40 | 1850 | struct ksock_conn *conn; |
97d10d0a | 1851 | int bufnob; |
d7e09d03 | 1852 | |
d4de2ab8 | 1853 | list_for_each(tmp, &peer->ksnp_conns) { |
ff13fd40 | 1854 | conn = list_entry(tmp, struct ksock_conn, ksnc_list); |
fb4a1539 | 1855 | bufnob = conn->ksnc_sock->sk->sk_wmem_queued; |
d7e09d03 PT |
1856 | |
1857 | if (bufnob < conn->ksnc_tx_bufnob) { | |
1858 | /* something got ACKed */ | |
1859 | conn->ksnc_tx_deadline = | |
1860 | cfs_time_shift(*ksocknal_tunables.ksnd_timeout); | |
1861 | peer->ksnp_last_alive = now; | |
1862 | conn->ksnc_tx_bufnob = bufnob; | |
1863 | } | |
1864 | } | |
1865 | ||
1866 | last_alive = peer->ksnp_last_alive; | |
06ace26e | 1867 | if (!ksocknal_find_connectable_route_locked(peer)) |
d7e09d03 PT |
1868 | connect = 0; |
1869 | } | |
1870 | ||
1871 | read_unlock(glock); | |
1872 | ||
5fd88337 | 1873 | if (last_alive) |
d7e09d03 PT |
1874 | *when = last_alive; |
1875 | ||
1876 | CDEBUG(D_NET, "Peer %s %p, alive %ld secs ago, connect %d\n", | |
1877 | libcfs_nid2str(nid), peer, | |
1878 | last_alive ? cfs_duration_sec(now - last_alive) : -1, | |
1879 | connect); | |
1880 | ||
1881 | if (!connect) | |
1882 | return; | |
1883 | ||
1884 | ksocknal_add_peer(ni, id, LNET_NIDADDR(nid), lnet_acceptor_port()); | |
1885 | ||
1886 | write_lock_bh(glock); | |
1887 | ||
1888 | peer = ksocknal_find_peer_locked(ni, id); | |
06ace26e | 1889 | if (peer) |
d7e09d03 PT |
1890 | ksocknal_launch_all_connections_locked(peer); |
1891 | ||
1892 | write_unlock_bh(glock); | |
d7e09d03 PT |
1893 | } |
1894 | ||
0b913529 | 1895 | static void |
ff13fd40 | 1896 | ksocknal_push_peer(struct ksock_peer *peer) |
d7e09d03 | 1897 | { |
97d10d0a MS |
1898 | int index; |
1899 | int i; | |
1900 | struct list_head *tmp; | |
ff13fd40 | 1901 | struct ksock_conn *conn; |
d7e09d03 PT |
1902 | |
1903 | for (index = 0; ; index++) { | |
1904 | read_lock(&ksocknal_data.ksnd_global_lock); | |
1905 | ||
1906 | i = 0; | |
1907 | conn = NULL; | |
1908 | ||
d4de2ab8 | 1909 | list_for_each(tmp, &peer->ksnp_conns) { |
d7e09d03 | 1910 | if (i++ == index) { |
ff13fd40 | 1911 | conn = list_entry(tmp, struct ksock_conn, |
c314c319 | 1912 | ksnc_list); |
d7e09d03 PT |
1913 | ksocknal_conn_addref(conn); |
1914 | break; | |
1915 | } | |
1916 | } | |
1917 | ||
1918 | read_unlock(&ksocknal_data.ksnd_global_lock); | |
1919 | ||
06ace26e | 1920 | if (!conn) |
d7e09d03 PT |
1921 | break; |
1922 | ||
d4de2ab8 | 1923 | ksocknal_lib_push_conn(conn); |
d7e09d03 PT |
1924 | ksocknal_conn_decref(conn); |
1925 | } | |
1926 | } | |
1927 | ||
4dcb7109 | 1928 | static int ksocknal_push(lnet_ni_t *ni, lnet_process_id_t id) |
d7e09d03 | 1929 | { |
4dcb7109 LZ |
1930 | struct list_head *start; |
1931 | struct list_head *end; | |
97d10d0a | 1932 | struct list_head *tmp; |
97d10d0a | 1933 | int rc = -ENOENT; |
4dcb7109 | 1934 | unsigned int hsize = ksocknal_data.ksnd_peer_hash_size; |
d7e09d03 | 1935 | |
4dcb7109 LZ |
1936 | if (id.nid == LNET_NID_ANY) { |
1937 | start = &ksocknal_data.ksnd_peers[0]; | |
1938 | end = &ksocknal_data.ksnd_peers[hsize - 1]; | |
1939 | } else { | |
d3d3d37a JS |
1940 | start = ksocknal_nid2peerlist(id.nid); |
1941 | end = ksocknal_nid2peerlist(id.nid); | |
4dcb7109 | 1942 | } |
d7e09d03 | 1943 | |
4dcb7109 LZ |
1944 | for (tmp = start; tmp <= end; tmp++) { |
1945 | int peer_off; /* searching offset in peer hash table */ | |
d7e09d03 | 1946 | |
4dcb7109 | 1947 | for (peer_off = 0; ; peer_off++) { |
ff13fd40 | 1948 | struct ksock_peer *peer; |
4dcb7109 | 1949 | int i = 0; |
d7e09d03 | 1950 | |
4dcb7109 LZ |
1951 | read_lock(&ksocknal_data.ksnd_global_lock); |
1952 | list_for_each_entry(peer, tmp, ksnp_list) { | |
d7e09d03 PT |
1953 | if (!((id.nid == LNET_NID_ANY || |
1954 | id.nid == peer->ksnp_id.nid) && | |
1955 | (id.pid == LNET_PID_ANY || | |
4dcb7109 | 1956 | id.pid == peer->ksnp_id.pid))) |
d7e09d03 | 1957 | continue; |
d7e09d03 | 1958 | |
4dcb7109 | 1959 | if (i++ == peer_off) { |
d7e09d03 PT |
1960 | ksocknal_peer_addref(peer); |
1961 | break; | |
1962 | } | |
1963 | } | |
d7e09d03 PT |
1964 | read_unlock(&ksocknal_data.ksnd_global_lock); |
1965 | ||
5fd88337 | 1966 | if (!i) /* no match */ |
4dcb7109 | 1967 | break; |
d7e09d03 | 1968 | |
4dcb7109 LZ |
1969 | rc = 0; |
1970 | ksocknal_push_peer(peer); | |
1971 | ksocknal_peer_decref(peer); | |
1972 | } | |
d7e09d03 | 1973 | } |
a1f659d4 | 1974 | return rc; |
d7e09d03 PT |
1975 | } |
1976 | ||
0b913529 | 1977 | static int |
d7e09d03 PT |
1978 | ksocknal_add_interface(lnet_ni_t *ni, __u32 ipaddress, __u32 netmask) |
1979 | { | |
ff13fd40 JS |
1980 | struct ksock_net *net = ni->ni_data; |
1981 | struct ksock_interface *iface; | |
97d10d0a MS |
1982 | int rc; |
1983 | int i; | |
1984 | int j; | |
1985 | struct list_head *ptmp; | |
ff13fd40 | 1986 | struct ksock_peer *peer; |
97d10d0a | 1987 | struct list_head *rtmp; |
ff13fd40 | 1988 | struct ksock_route *route; |
d7e09d03 | 1989 | |
5fd88337 | 1990 | if (!ipaddress || !netmask) |
71397095 | 1991 | return -EINVAL; |
d7e09d03 PT |
1992 | |
1993 | write_lock_bh(&ksocknal_data.ksnd_global_lock); | |
1994 | ||
1995 | iface = ksocknal_ip2iface(ni, ipaddress); | |
06ace26e | 1996 | if (iface) { |
d7e09d03 PT |
1997 | /* silently ignore dups */ |
1998 | rc = 0; | |
1999 | } else if (net->ksnn_ninterfaces == LNET_MAX_INTERFACES) { | |
2000 | rc = -ENOSPC; | |
2001 | } else { | |
2002 | iface = &net->ksnn_interfaces[net->ksnn_ninterfaces++]; | |
2003 | ||
2004 | iface->ksni_ipaddr = ipaddress; | |
2005 | iface->ksni_netmask = netmask; | |
2006 | iface->ksni_nroutes = 0; | |
2007 | iface->ksni_npeers = 0; | |
2008 | ||
2009 | for (i = 0; i < ksocknal_data.ksnd_peer_hash_size; i++) { | |
2010 | list_for_each(ptmp, &ksocknal_data.ksnd_peers[i]) { | |
ff13fd40 | 2011 | peer = list_entry(ptmp, struct ksock_peer, |
c314c319 | 2012 | ksnp_list); |
d7e09d03 PT |
2013 | |
2014 | for (j = 0; j < peer->ksnp_n_passive_ips; j++) | |
2015 | if (peer->ksnp_passive_ips[j] == ipaddress) | |
2016 | iface->ksni_npeers++; | |
2017 | ||
2018 | list_for_each(rtmp, &peer->ksnp_routes) { | |
ff13fd40 | 2019 | route = list_entry(rtmp, struct ksock_route, |
c314c319 | 2020 | ksnr_list); |
d7e09d03 PT |
2021 | |
2022 | if (route->ksnr_myipaddr == ipaddress) | |
2023 | iface->ksni_nroutes++; | |
2024 | } | |
2025 | } | |
2026 | } | |
2027 | ||
2028 | rc = 0; | |
2029 | /* NB only new connections will pay attention to the new interface! */ | |
2030 | } | |
2031 | ||
2032 | write_unlock_bh(&ksocknal_data.ksnd_global_lock); | |
2033 | ||
a1f659d4 | 2034 | return rc; |
d7e09d03 PT |
2035 | } |
2036 | ||
0b913529 | 2037 | static void |
ff13fd40 | 2038 | ksocknal_peer_del_interface_locked(struct ksock_peer *peer, __u32 ipaddr) |
d7e09d03 | 2039 | { |
97d10d0a MS |
2040 | struct list_head *tmp; |
2041 | struct list_head *nxt; | |
ff13fd40 JS |
2042 | struct ksock_route *route; |
2043 | struct ksock_conn *conn; | |
97d10d0a MS |
2044 | int i; |
2045 | int j; | |
d7e09d03 PT |
2046 | |
2047 | for (i = 0; i < peer->ksnp_n_passive_ips; i++) | |
2048 | if (peer->ksnp_passive_ips[i] == ipaddr) { | |
51078e25 JS |
2049 | for (j = i + 1; j < peer->ksnp_n_passive_ips; j++) |
2050 | peer->ksnp_passive_ips[j - 1] = | |
d7e09d03 PT |
2051 | peer->ksnp_passive_ips[j]; |
2052 | peer->ksnp_n_passive_ips--; | |
2053 | break; | |
2054 | } | |
2055 | ||
2056 | list_for_each_safe(tmp, nxt, &peer->ksnp_routes) { | |
ff13fd40 | 2057 | route = list_entry(tmp, struct ksock_route, ksnr_list); |
d7e09d03 PT |
2058 | |
2059 | if (route->ksnr_myipaddr != ipaddr) | |
2060 | continue; | |
2061 | ||
5fd88337 | 2062 | if (route->ksnr_share_count) { |
d7e09d03 PT |
2063 | /* Manually created; keep, but unbind */ |
2064 | route->ksnr_myipaddr = 0; | |
2065 | } else { | |
2066 | ksocknal_del_route_locked(route); | |
2067 | } | |
2068 | } | |
2069 | ||
2070 | list_for_each_safe(tmp, nxt, &peer->ksnp_conns) { | |
ff13fd40 | 2071 | conn = list_entry(tmp, struct ksock_conn, ksnc_list); |
d7e09d03 PT |
2072 | |
2073 | if (conn->ksnc_myipaddr == ipaddr) | |
d4de2ab8 | 2074 | ksocknal_close_conn_locked(conn, 0); |
d7e09d03 PT |
2075 | } |
2076 | } | |
2077 | ||
0b913529 | 2078 | static int |
d7e09d03 PT |
2079 | ksocknal_del_interface(lnet_ni_t *ni, __u32 ipaddress) |
2080 | { | |
ff13fd40 | 2081 | struct ksock_net *net = ni->ni_data; |
97d10d0a MS |
2082 | int rc = -ENOENT; |
2083 | struct list_head *tmp; | |
2084 | struct list_head *nxt; | |
ff13fd40 | 2085 | struct ksock_peer *peer; |
97d10d0a MS |
2086 | __u32 this_ip; |
2087 | int i; | |
2088 | int j; | |
d7e09d03 PT |
2089 | |
2090 | write_lock_bh(&ksocknal_data.ksnd_global_lock); | |
2091 | ||
2092 | for (i = 0; i < net->ksnn_ninterfaces; i++) { | |
2093 | this_ip = net->ksnn_interfaces[i].ksni_ipaddr; | |
2094 | ||
5fd88337 | 2095 | if (!(!ipaddress || ipaddress == this_ip)) |
d7e09d03 PT |
2096 | continue; |
2097 | ||
2098 | rc = 0; | |
2099 | ||
51078e25 JS |
2100 | for (j = i + 1; j < net->ksnn_ninterfaces; j++) |
2101 | net->ksnn_interfaces[j - 1] = | |
d7e09d03 PT |
2102 | net->ksnn_interfaces[j]; |
2103 | ||
2104 | net->ksnn_ninterfaces--; | |
2105 | ||
2106 | for (j = 0; j < ksocknal_data.ksnd_peer_hash_size; j++) { | |
2107 | list_for_each_safe(tmp, nxt, | |
c314c319 | 2108 | &ksocknal_data.ksnd_peers[j]) { |
ff13fd40 | 2109 | peer = list_entry(tmp, struct ksock_peer, ksnp_list); |
d7e09d03 PT |
2110 | |
2111 | if (peer->ksnp_ni != ni) | |
2112 | continue; | |
2113 | ||
2114 | ksocknal_peer_del_interface_locked(peer, this_ip); | |
2115 | } | |
2116 | } | |
2117 | } | |
2118 | ||
2119 | write_unlock_bh(&ksocknal_data.ksnd_global_lock); | |
2120 | ||
a1f659d4 | 2121 | return rc; |
d7e09d03 PT |
2122 | } |
2123 | ||
2124 | int | |
2125 | ksocknal_ctl(lnet_ni_t *ni, unsigned int cmd, void *arg) | |
2126 | { | |
2127 | lnet_process_id_t id = {0}; | |
2128 | struct libcfs_ioctl_data *data = arg; | |
2129 | int rc; | |
2130 | ||
991cc8d6 | 2131 | switch (cmd) { |
d7e09d03 | 2132 | case IOC_LIBCFS_GET_INTERFACE: { |
ff13fd40 JS |
2133 | struct ksock_net *net = ni->ni_data; |
2134 | struct ksock_interface *iface; | |
d7e09d03 PT |
2135 | |
2136 | read_lock(&ksocknal_data.ksnd_global_lock); | |
2137 | ||
2138 | if (data->ioc_count >= (__u32)net->ksnn_ninterfaces) { | |
2139 | rc = -ENOENT; | |
2140 | } else { | |
2141 | rc = 0; | |
2142 | iface = &net->ksnn_interfaces[data->ioc_count]; | |
2143 | ||
2144 | data->ioc_u32[0] = iface->ksni_ipaddr; | |
2145 | data->ioc_u32[1] = iface->ksni_netmask; | |
2146 | data->ioc_u32[2] = iface->ksni_npeers; | |
2147 | data->ioc_u32[3] = iface->ksni_nroutes; | |
2148 | } | |
2149 | ||
2150 | read_unlock(&ksocknal_data.ksnd_global_lock); | |
2151 | return rc; | |
2152 | } | |
2153 | ||
2154 | case IOC_LIBCFS_ADD_INTERFACE: | |
2155 | return ksocknal_add_interface(ni, | |
2156 | data->ioc_u32[0], /* IP address */ | |
2157 | data->ioc_u32[1]); /* net mask */ | |
2158 | ||
2159 | case IOC_LIBCFS_DEL_INTERFACE: | |
2160 | return ksocknal_del_interface(ni, | |
2161 | data->ioc_u32[0]); /* IP address */ | |
2162 | ||
2163 | case IOC_LIBCFS_GET_PEER: { | |
97d10d0a MS |
2164 | __u32 myip = 0; |
2165 | __u32 ip = 0; | |
2166 | int port = 0; | |
2167 | int conn_count = 0; | |
2168 | int share_count = 0; | |
d7e09d03 PT |
2169 | |
2170 | rc = ksocknal_get_peer_info(ni, data->ioc_count, | |
2171 | &id, &myip, &ip, &port, | |
2172 | &conn_count, &share_count); | |
5fd88337 | 2173 | if (rc) |
d7e09d03 PT |
2174 | return rc; |
2175 | ||
2176 | data->ioc_nid = id.nid; | |
2177 | data->ioc_count = share_count; | |
2178 | data->ioc_u32[0] = ip; | |
2179 | data->ioc_u32[1] = port; | |
2180 | data->ioc_u32[2] = myip; | |
2181 | data->ioc_u32[3] = conn_count; | |
2182 | data->ioc_u32[4] = id.pid; | |
2183 | return 0; | |
2184 | } | |
2185 | ||
2186 | case IOC_LIBCFS_ADD_PEER: | |
2187 | id.nid = data->ioc_nid; | |
fe7cb65d | 2188 | id.pid = LNET_PID_LUSTRE; |
d4de2ab8 | 2189 | return ksocknal_add_peer(ni, id, |
d7e09d03 PT |
2190 | data->ioc_u32[0], /* IP */ |
2191 | data->ioc_u32[1]); /* port */ | |
2192 | ||
2193 | case IOC_LIBCFS_DEL_PEER: | |
2194 | id.nid = data->ioc_nid; | |
2195 | id.pid = LNET_PID_ANY; | |
d4de2ab8 | 2196 | return ksocknal_del_peer(ni, id, |
d7e09d03 PT |
2197 | data->ioc_u32[0]); /* IP */ |
2198 | ||
2199 | case IOC_LIBCFS_GET_CONN: { | |
97d10d0a MS |
2200 | int txmem; |
2201 | int rxmem; | |
2202 | int nagle; | |
ff13fd40 | 2203 | struct ksock_conn *conn = ksocknal_get_conn_by_idx(ni, data->ioc_count); |
d7e09d03 | 2204 | |
06ace26e | 2205 | if (!conn) |
d7e09d03 PT |
2206 | return -ENOENT; |
2207 | ||
2208 | ksocknal_lib_get_conn_tunables(conn, &txmem, &rxmem, &nagle); | |
2209 | ||
2210 | data->ioc_count = txmem; | |
2211 | data->ioc_nid = conn->ksnc_peer->ksnp_id.nid; | |
2212 | data->ioc_flags = nagle; | |
2213 | data->ioc_u32[0] = conn->ksnc_ipaddr; | |
2214 | data->ioc_u32[1] = conn->ksnc_port; | |
2215 | data->ioc_u32[2] = conn->ksnc_myipaddr; | |
2216 | data->ioc_u32[3] = conn->ksnc_type; | |
2217 | data->ioc_u32[4] = conn->ksnc_scheduler->kss_info->ksi_cpt; | |
2218 | data->ioc_u32[5] = rxmem; | |
2219 | data->ioc_u32[6] = conn->ksnc_peer->ksnp_id.pid; | |
2220 | ksocknal_conn_decref(conn); | |
2221 | return 0; | |
2222 | } | |
2223 | ||
2224 | case IOC_LIBCFS_CLOSE_CONNECTION: | |
2225 | id.nid = data->ioc_nid; | |
2226 | id.pid = LNET_PID_ANY; | |
d4de2ab8 | 2227 | return ksocknal_close_matching_conns(id, |
d7e09d03 PT |
2228 | data->ioc_u32[0]); |
2229 | ||
2230 | case IOC_LIBCFS_REGISTER_MYNID: | |
2231 | /* Ignore if this is a noop */ | |
2232 | if (data->ioc_nid == ni->ni_nid) | |
2233 | return 0; | |
2234 | ||
2235 | CERROR("obsolete IOC_LIBCFS_REGISTER_MYNID: %s(%s)\n", | |
2236 | libcfs_nid2str(data->ioc_nid), | |
2237 | libcfs_nid2str(ni->ni_nid)); | |
2238 | return -EINVAL; | |
2239 | ||
2240 | case IOC_LIBCFS_PUSH_CONNECTION: | |
2241 | id.nid = data->ioc_nid; | |
2242 | id.pid = LNET_PID_ANY; | |
2243 | return ksocknal_push(ni, id); | |
2244 | ||
2245 | default: | |
2246 | return -EINVAL; | |
2247 | } | |
2248 | /* not reached */ | |
2249 | } | |
2250 | ||
0b913529 | 2251 | static void |
d4de2ab8 | 2252 | ksocknal_free_buffers(void) |
d7e09d03 | 2253 | { |
5fd88337 | 2254 | LASSERT(!atomic_read(&ksocknal_data.ksnd_nactive_txs)); |
d7e09d03 | 2255 | |
06ace26e | 2256 | if (ksocknal_data.ksnd_sched_info) { |
97d10d0a MS |
2257 | struct ksock_sched_info *info; |
2258 | int i; | |
d7e09d03 PT |
2259 | |
2260 | cfs_percpt_for_each(info, i, ksocknal_data.ksnd_sched_info) { | |
06ace26e | 2261 | if (info->ksi_scheds) { |
d7e09d03 PT |
2262 | LIBCFS_FREE(info->ksi_scheds, |
2263 | info->ksi_nthreads_max * | |
2264 | sizeof(info->ksi_scheds[0])); | |
2265 | } | |
2266 | } | |
2267 | cfs_percpt_free(ksocknal_data.ksnd_sched_info); | |
2268 | } | |
2269 | ||
d4de2ab8 | 2270 | LIBCFS_FREE(ksocknal_data.ksnd_peers, |
c314c319 JS |
2271 | sizeof(struct list_head) * |
2272 | ksocknal_data.ksnd_peer_hash_size); | |
d7e09d03 PT |
2273 | |
2274 | spin_lock(&ksocknal_data.ksnd_tx_lock); | |
2275 | ||
2276 | if (!list_empty(&ksocknal_data.ksnd_idle_noop_txs)) { | |
97d10d0a | 2277 | struct list_head zlist; |
ff13fd40 JS |
2278 | struct ksock_tx *tx; |
2279 | struct ksock_tx *temp; | |
d7e09d03 PT |
2280 | |
2281 | list_add(&zlist, &ksocknal_data.ksnd_idle_noop_txs); | |
2282 | list_del_init(&ksocknal_data.ksnd_idle_noop_txs); | |
2283 | spin_unlock(&ksocknal_data.ksnd_tx_lock); | |
2284 | ||
2aff15d4 | 2285 | list_for_each_entry_safe(tx, temp, &zlist, tx_list) { |
d7e09d03 PT |
2286 | list_del(&tx->tx_list); |
2287 | LIBCFS_FREE(tx, tx->tx_desc_size); | |
2288 | } | |
2289 | } else { | |
2290 | spin_unlock(&ksocknal_data.ksnd_tx_lock); | |
2291 | } | |
2292 | } | |
2293 | ||
0b913529 | 2294 | static void |
d7e09d03 PT |
2295 | ksocknal_base_shutdown(void) |
2296 | { | |
2297 | struct ksock_sched_info *info; | |
ff13fd40 | 2298 | struct ksock_sched *sched; |
97d10d0a MS |
2299 | int i; |
2300 | int j; | |
d7e09d03 | 2301 | |
5fd88337 | 2302 | LASSERT(!ksocknal_data.ksnd_nnets); |
d7e09d03 PT |
2303 | |
2304 | switch (ksocknal_data.ksnd_init) { | |
2305 | default: | |
d4de2ab8 | 2306 | LASSERT(0); |
d7e09d03 PT |
2307 | |
2308 | case SOCKNAL_INIT_ALL: | |
2309 | case SOCKNAL_INIT_DATA: | |
06ace26e | 2310 | LASSERT(ksocknal_data.ksnd_peers); |
df5ddcc9 | 2311 | for (i = 0; i < ksocknal_data.ksnd_peer_hash_size; i++) |
d4de2ab8 | 2312 | LASSERT(list_empty(&ksocknal_data.ksnd_peers[i])); |
d7e09d03 PT |
2313 | |
2314 | LASSERT(list_empty(&ksocknal_data.ksnd_nets)); | |
d4de2ab8 HE |
2315 | LASSERT(list_empty(&ksocknal_data.ksnd_enomem_conns)); |
2316 | LASSERT(list_empty(&ksocknal_data.ksnd_zombie_conns)); | |
2317 | LASSERT(list_empty(&ksocknal_data.ksnd_connd_connreqs)); | |
2318 | LASSERT(list_empty(&ksocknal_data.ksnd_connd_routes)); | |
d7e09d03 | 2319 | |
06ace26e | 2320 | if (ksocknal_data.ksnd_sched_info) { |
d7e09d03 PT |
2321 | cfs_percpt_for_each(info, i, |
2322 | ksocknal_data.ksnd_sched_info) { | |
06ace26e | 2323 | if (!info->ksi_scheds) |
d7e09d03 PT |
2324 | continue; |
2325 | ||
2326 | for (j = 0; j < info->ksi_nthreads_max; j++) { | |
d7e09d03 | 2327 | sched = &info->ksi_scheds[j]; |
4b18c358 MN |
2328 | LASSERT(list_empty( |
2329 | &sched->kss_tx_conns)); | |
2330 | LASSERT(list_empty( | |
2331 | &sched->kss_rx_conns)); | |
2332 | LASSERT(list_empty( | |
2333 | &sched->kss_zombie_noop_txs)); | |
5fd88337 | 2334 | LASSERT(!sched->kss_nconns); |
d7e09d03 PT |
2335 | } |
2336 | } | |
2337 | } | |
2338 | ||
2339 | /* flag threads to terminate; wake and wait for them to die */ | |
2340 | ksocknal_data.ksnd_shuttingdown = 1; | |
2341 | wake_up_all(&ksocknal_data.ksnd_connd_waitq); | |
2342 | wake_up_all(&ksocknal_data.ksnd_reaper_waitq); | |
2343 | ||
06ace26e | 2344 | if (ksocknal_data.ksnd_sched_info) { |
d7e09d03 PT |
2345 | cfs_percpt_for_each(info, i, |
2346 | ksocknal_data.ksnd_sched_info) { | |
06ace26e | 2347 | if (!info->ksi_scheds) |
d7e09d03 PT |
2348 | continue; |
2349 | ||
2350 | for (j = 0; j < info->ksi_nthreads_max; j++) { | |
2351 | sched = &info->ksi_scheds[j]; | |
2352 | wake_up_all(&sched->kss_waitq); | |
2353 | } | |
2354 | } | |
2355 | } | |
2356 | ||
2357 | i = 4; | |
2358 | read_lock(&ksocknal_data.ksnd_global_lock); | |
5fd88337 | 2359 | while (ksocknal_data.ksnd_nthreads) { |
d7e09d03 PT |
2360 | i++; |
2361 | CDEBUG(((i & (-i)) == i) ? D_WARNING : D_NET, /* power of 2? */ | |
2362 | "waiting for %d threads to terminate\n", | |
2363 | ksocknal_data.ksnd_nthreads); | |
2364 | read_unlock(&ksocknal_data.ksnd_global_lock); | |
d3caf4d5 PT |
2365 | set_current_state(TASK_UNINTERRUPTIBLE); |
2366 | schedule_timeout(cfs_time_seconds(1)); | |
d7e09d03 PT |
2367 | read_lock(&ksocknal_data.ksnd_global_lock); |
2368 | } | |
2369 | read_unlock(&ksocknal_data.ksnd_global_lock); | |
2370 | ||
2371 | ksocknal_free_buffers(); | |
2372 | ||
2373 | ksocknal_data.ksnd_init = SOCKNAL_INIT_NOTHING; | |
2374 | break; | |
2375 | } | |
2376 | ||
d7e09d03 PT |
2377 | module_put(THIS_MODULE); |
2378 | } | |
2379 | ||
0b913529 | 2380 | static __u64 |
d4de2ab8 | 2381 | ksocknal_new_incarnation(void) |
d7e09d03 | 2382 | { |
d7e09d03 | 2383 | /* The incarnation number is the time this module loaded and it |
11dd2a97 TR |
2384 | * identifies this particular instance of the socknal. |
2385 | */ | |
2386 | return ktime_get_ns(); | |
d7e09d03 PT |
2387 | } |
2388 | ||
0b913529 | 2389 | static int |
d7e09d03 PT |
2390 | ksocknal_base_startup(void) |
2391 | { | |
2392 | struct ksock_sched_info *info; | |
97d10d0a MS |
2393 | int rc; |
2394 | int i; | |
d7e09d03 | 2395 | |
d4de2ab8 | 2396 | LASSERT(ksocknal_data.ksnd_init == SOCKNAL_INIT_NOTHING); |
5fd88337 | 2397 | LASSERT(!ksocknal_data.ksnd_nnets); |
d7e09d03 | 2398 | |
d4de2ab8 | 2399 | memset(&ksocknal_data, 0, sizeof(ksocknal_data)); /* zero pointers */ |
d7e09d03 PT |
2400 | |
2401 | ksocknal_data.ksnd_peer_hash_size = SOCKNAL_PEER_HASH_SIZE; | |
d4de2ab8 | 2402 | LIBCFS_ALLOC(ksocknal_data.ksnd_peers, |
c314c319 JS |
2403 | sizeof(struct list_head) * |
2404 | ksocknal_data.ksnd_peer_hash_size); | |
06ace26e | 2405 | if (!ksocknal_data.ksnd_peers) |
d7e09d03 PT |
2406 | return -ENOMEM; |
2407 | ||
2408 | for (i = 0; i < ksocknal_data.ksnd_peer_hash_size; i++) | |
2409 | INIT_LIST_HEAD(&ksocknal_data.ksnd_peers[i]); | |
2410 | ||
2411 | rwlock_init(&ksocknal_data.ksnd_global_lock); | |
2412 | INIT_LIST_HEAD(&ksocknal_data.ksnd_nets); | |
2413 | ||
2414 | spin_lock_init(&ksocknal_data.ksnd_reaper_lock); | |
d4de2ab8 HE |
2415 | INIT_LIST_HEAD(&ksocknal_data.ksnd_enomem_conns); |
2416 | INIT_LIST_HEAD(&ksocknal_data.ksnd_zombie_conns); | |
2417 | INIT_LIST_HEAD(&ksocknal_data.ksnd_deathrow_conns); | |
d7e09d03 PT |
2418 | init_waitqueue_head(&ksocknal_data.ksnd_reaper_waitq); |
2419 | ||
2420 | spin_lock_init(&ksocknal_data.ksnd_connd_lock); | |
d4de2ab8 HE |
2421 | INIT_LIST_HEAD(&ksocknal_data.ksnd_connd_connreqs); |
2422 | INIT_LIST_HEAD(&ksocknal_data.ksnd_connd_routes); | |
d7e09d03 PT |
2423 | init_waitqueue_head(&ksocknal_data.ksnd_connd_waitq); |
2424 | ||
2425 | spin_lock_init(&ksocknal_data.ksnd_tx_lock); | |
d4de2ab8 | 2426 | INIT_LIST_HEAD(&ksocknal_data.ksnd_idle_noop_txs); |
d7e09d03 PT |
2427 | |
2428 | /* NB memset above zeros whole of ksocknal_data */ | |
2429 | ||
2430 | /* flag lists/ptrs/locks initialised */ | |
2431 | ksocknal_data.ksnd_init = SOCKNAL_INIT_DATA; | |
2432 | try_module_get(THIS_MODULE); | |
2433 | ||
2434 | ksocknal_data.ksnd_sched_info = cfs_percpt_alloc(lnet_cpt_table(), | |
2435 | sizeof(*info)); | |
06ace26e | 2436 | if (!ksocknal_data.ksnd_sched_info) |
d7e09d03 PT |
2437 | goto failed; |
2438 | ||
2439 | cfs_percpt_for_each(info, i, ksocknal_data.ksnd_sched_info) { | |
ff13fd40 | 2440 | struct ksock_sched *sched; |
97d10d0a | 2441 | int nthrs; |
d7e09d03 PT |
2442 | |
2443 | nthrs = cfs_cpt_weight(lnet_cpt_table(), i); | |
2444 | if (*ksocknal_tunables.ksnd_nscheds > 0) { | |
2445 | nthrs = min(nthrs, *ksocknal_tunables.ksnd_nscheds); | |
2446 | } else { | |
4420cfd3 JS |
2447 | /* |
2448 | * max to half of CPUs, assume another half should be | |
2449 | * reserved for upper layer modules | |
2450 | */ | |
d7e09d03 PT |
2451 | nthrs = min(max(SOCKNAL_NSCHEDS, nthrs >> 1), nthrs); |
2452 | } | |
2453 | ||
2454 | info->ksi_nthreads_max = nthrs; | |
2455 | info->ksi_cpt = i; | |
2456 | ||
2457 | LIBCFS_CPT_ALLOC(info->ksi_scheds, lnet_cpt_table(), i, | |
2458 | info->ksi_nthreads_max * sizeof(*sched)); | |
06ace26e | 2459 | if (!info->ksi_scheds) |
d7e09d03 PT |
2460 | goto failed; |
2461 | ||
2462 | for (; nthrs > 0; nthrs--) { | |
2463 | sched = &info->ksi_scheds[nthrs - 1]; | |
2464 | ||
2465 | sched->kss_info = info; | |
2466 | spin_lock_init(&sched->kss_lock); | |
2467 | INIT_LIST_HEAD(&sched->kss_rx_conns); | |
2468 | INIT_LIST_HEAD(&sched->kss_tx_conns); | |
2469 | INIT_LIST_HEAD(&sched->kss_zombie_noop_txs); | |
2470 | init_waitqueue_head(&sched->kss_waitq); | |
2471 | } | |
2472 | } | |
2473 | ||
97d10d0a MS |
2474 | ksocknal_data.ksnd_connd_starting = 0; |
2475 | ksocknal_data.ksnd_connd_failed_stamp = 0; | |
74ad578f | 2476 | ksocknal_data.ksnd_connd_starting_stamp = ktime_get_real_seconds(); |
4420cfd3 JS |
2477 | /* |
2478 | * must have at least 2 connds to remain responsive to accepts while | |
2479 | * connecting | |
2480 | */ | |
d7e09d03 PT |
2481 | if (*ksocknal_tunables.ksnd_nconnds < SOCKNAL_CONND_RESV + 1) |
2482 | *ksocknal_tunables.ksnd_nconnds = SOCKNAL_CONND_RESV + 1; | |
2483 | ||
2484 | if (*ksocknal_tunables.ksnd_nconnds_max < | |
2485 | *ksocknal_tunables.ksnd_nconnds) { | |
2486 | ksocknal_tunables.ksnd_nconnds_max = | |
2487 | ksocknal_tunables.ksnd_nconnds; | |
2488 | } | |
2489 | ||
2490 | for (i = 0; i < *ksocknal_tunables.ksnd_nconnds; i++) { | |
2491 | char name[16]; | |
50ffcb7e | 2492 | |
d7e09d03 PT |
2493 | spin_lock_bh(&ksocknal_data.ksnd_connd_lock); |
2494 | ksocknal_data.ksnd_connd_starting++; | |
2495 | spin_unlock_bh(&ksocknal_data.ksnd_connd_lock); | |
2496 | ||
d7e09d03 PT |
2497 | snprintf(name, sizeof(name), "socknal_cd%02d", i); |
2498 | rc = ksocknal_thread_start(ksocknal_connd, | |
2499 | (void *)((ulong_ptr_t)i), name); | |
5fd88337 | 2500 | if (rc) { |
d7e09d03 PT |
2501 | spin_lock_bh(&ksocknal_data.ksnd_connd_lock); |
2502 | ksocknal_data.ksnd_connd_starting--; | |
2503 | spin_unlock_bh(&ksocknal_data.ksnd_connd_lock); | |
2504 | CERROR("Can't spawn socknal connd: %d\n", rc); | |
2505 | goto failed; | |
2506 | } | |
2507 | } | |
2508 | ||
2509 | rc = ksocknal_thread_start(ksocknal_reaper, NULL, "socknal_reaper"); | |
5fd88337 | 2510 | if (rc) { |
d4de2ab8 | 2511 | CERROR("Can't spawn socknal reaper: %d\n", rc); |
d7e09d03 PT |
2512 | goto failed; |
2513 | } | |
2514 | ||
2515 | /* flag everything initialised */ | |
2516 | ksocknal_data.ksnd_init = SOCKNAL_INIT_ALL; | |
2517 | ||
2518 | return 0; | |
2519 | ||
2520 | failed: | |
2521 | ksocknal_base_shutdown(); | |
2522 | return -ENETDOWN; | |
2523 | } | |
2524 | ||
0b913529 | 2525 | static void |
d4de2ab8 | 2526 | ksocknal_debug_peerhash(lnet_ni_t *ni) |
d7e09d03 | 2527 | { |
ff13fd40 | 2528 | struct ksock_peer *peer = NULL; |
97d10d0a MS |
2529 | struct list_head *tmp; |
2530 | int i; | |
d7e09d03 PT |
2531 | |
2532 | read_lock(&ksocknal_data.ksnd_global_lock); | |
2533 | ||
2534 | for (i = 0; i < ksocknal_data.ksnd_peer_hash_size; i++) { | |
d4de2ab8 | 2535 | list_for_each(tmp, &ksocknal_data.ksnd_peers[i]) { |
ff13fd40 | 2536 | peer = list_entry(tmp, struct ksock_peer, ksnp_list); |
d7e09d03 | 2537 | |
a10f33e9 MN |
2538 | if (peer->ksnp_ni == ni) |
2539 | break; | |
d7e09d03 PT |
2540 | |
2541 | peer = NULL; | |
2542 | } | |
2543 | } | |
2544 | ||
06ace26e | 2545 | if (peer) { |
ff13fd40 JS |
2546 | struct ksock_route *route; |
2547 | struct ksock_conn *conn; | |
d7e09d03 | 2548 | |
2d00bd17 JP |
2549 | CWARN("Active peer on shutdown: %s, ref %d, scnt %d, closing %d, accepting %d, err %d, zcookie %llu, txq %d, zc_req %d\n", |
2550 | libcfs_id2str(peer->ksnp_id), | |
2551 | atomic_read(&peer->ksnp_refcount), | |
2552 | peer->ksnp_sharecount, peer->ksnp_closing, | |
2553 | peer->ksnp_accepting, peer->ksnp_error, | |
2554 | peer->ksnp_zc_next_cookie, | |
2555 | !list_empty(&peer->ksnp_tx_queue), | |
2556 | !list_empty(&peer->ksnp_zc_req_list)); | |
d7e09d03 | 2557 | |
d4de2ab8 | 2558 | list_for_each(tmp, &peer->ksnp_routes) { |
ff13fd40 | 2559 | route = list_entry(tmp, struct ksock_route, ksnr_list); |
2d00bd17 JP |
2560 | CWARN("Route: ref %d, schd %d, conn %d, cnted %d, del %d\n", |
2561 | atomic_read(&route->ksnr_refcount), | |
2562 | route->ksnr_scheduled, route->ksnr_connecting, | |
2563 | route->ksnr_connected, route->ksnr_deleted); | |
d7e09d03 PT |
2564 | } |
2565 | ||
d4de2ab8 | 2566 | list_for_each(tmp, &peer->ksnp_conns) { |
ff13fd40 | 2567 | conn = list_entry(tmp, struct ksock_conn, ksnc_list); |
d4de2ab8 | 2568 | CWARN("Conn: ref %d, sref %d, t %d, c %d\n", |
c314c319 JS |
2569 | atomic_read(&conn->ksnc_conn_refcount), |
2570 | atomic_read(&conn->ksnc_sock_refcount), | |
2571 | conn->ksnc_type, conn->ksnc_closing); | |
d7e09d03 PT |
2572 | } |
2573 | } | |
2574 | ||
2575 | read_unlock(&ksocknal_data.ksnd_global_lock); | |
d7e09d03 PT |
2576 | } |
2577 | ||
2578 | void | |
d4de2ab8 | 2579 | ksocknal_shutdown(lnet_ni_t *ni) |
d7e09d03 | 2580 | { |
ff13fd40 | 2581 | struct ksock_net *net = ni->ni_data; |
97d10d0a | 2582 | int i; |
d7e09d03 PT |
2583 | lnet_process_id_t anyid = {0}; |
2584 | ||
97d10d0a MS |
2585 | anyid.nid = LNET_NID_ANY; |
2586 | anyid.pid = LNET_PID_ANY; | |
d7e09d03 PT |
2587 | |
2588 | LASSERT(ksocknal_data.ksnd_init == SOCKNAL_INIT_ALL); | |
2589 | LASSERT(ksocknal_data.ksnd_nnets > 0); | |
2590 | ||
2591 | spin_lock_bh(&net->ksnn_lock); | |
2592 | net->ksnn_shutdown = 1; /* prevent new peers */ | |
2593 | spin_unlock_bh(&net->ksnn_lock); | |
2594 | ||
2595 | /* Delete all peers */ | |
2596 | ksocknal_del_peer(ni, anyid, 0); | |
2597 | ||
2598 | /* Wait for all peer state to clean up */ | |
2599 | i = 2; | |
2600 | spin_lock_bh(&net->ksnn_lock); | |
5fd88337 | 2601 | while (net->ksnn_npeers) { |
d7e09d03 PT |
2602 | spin_unlock_bh(&net->ksnn_lock); |
2603 | ||
2604 | i++; | |
2605 | CDEBUG(((i & (-i)) == i) ? D_WARNING : D_NET, /* power of 2? */ | |
2606 | "waiting for %d peers to disconnect\n", | |
2607 | net->ksnn_npeers); | |
d3caf4d5 PT |
2608 | set_current_state(TASK_UNINTERRUPTIBLE); |
2609 | schedule_timeout(cfs_time_seconds(1)); | |
d7e09d03 PT |
2610 | |
2611 | ksocknal_debug_peerhash(ni); | |
2612 | ||
2613 | spin_lock_bh(&net->ksnn_lock); | |
2614 | } | |
2615 | spin_unlock_bh(&net->ksnn_lock); | |
2616 | ||
2617 | for (i = 0; i < net->ksnn_ninterfaces; i++) { | |
5fd88337 JS |
2618 | LASSERT(!net->ksnn_interfaces[i].ksni_npeers); |
2619 | LASSERT(!net->ksnn_interfaces[i].ksni_nroutes); | |
d7e09d03 PT |
2620 | } |
2621 | ||
2622 | list_del(&net->ksnn_list); | |
2623 | LIBCFS_FREE(net, sizeof(*net)); | |
2624 | ||
2625 | ksocknal_data.ksnd_nnets--; | |
5fd88337 | 2626 | if (!ksocknal_data.ksnd_nnets) |
d7e09d03 PT |
2627 | ksocknal_base_shutdown(); |
2628 | } | |
2629 | ||
0b913529 | 2630 | static int |
ff13fd40 | 2631 | ksocknal_enumerate_interfaces(struct ksock_net *net) |
d7e09d03 | 2632 | { |
97d10d0a MS |
2633 | char **names; |
2634 | int i; | |
2635 | int j; | |
2636 | int rc; | |
2637 | int n; | |
d7e09d03 | 2638 | |
1ad6a73e | 2639 | n = lnet_ipif_enumerate(&names); |
d7e09d03 PT |
2640 | if (n <= 0) { |
2641 | CERROR("Can't enumerate interfaces: %d\n", n); | |
2642 | return n; | |
2643 | } | |
2644 | ||
2645 | for (i = j = 0; i < n; i++) { | |
97d10d0a MS |
2646 | int up; |
2647 | __u32 ip; | |
2648 | __u32 mask; | |
d7e09d03 PT |
2649 | |
2650 | if (!strcmp(names[i], "lo")) /* skip the loopback IF */ | |
2651 | continue; | |
2652 | ||
1ad6a73e | 2653 | rc = lnet_ipif_query(names[i], &up, &ip, &mask); |
5fd88337 | 2654 | if (rc) { |
d7e09d03 PT |
2655 | CWARN("Can't get interface %s info: %d\n", |
2656 | names[i], rc); | |
2657 | continue; | |
2658 | } | |
2659 | ||
2660 | if (!up) { | |
2661 | CWARN("Ignoring interface %s (down)\n", | |
2662 | names[i]); | |
2663 | continue; | |
2664 | } | |
2665 | ||
2666 | if (j == LNET_MAX_INTERFACES) { | |
2667 | CWARN("Ignoring interface %s (too many interfaces)\n", | |
2668 | names[i]); | |
2669 | continue; | |
2670 | } | |
2671 | ||
2672 | net->ksnn_interfaces[j].ksni_ipaddr = ip; | |
2673 | net->ksnn_interfaces[j].ksni_netmask = mask; | |
9563fe8a DE |
2674 | strlcpy(net->ksnn_interfaces[j].ksni_name, |
2675 | names[i], sizeof(net->ksnn_interfaces[j].ksni_name)); | |
d7e09d03 PT |
2676 | j++; |
2677 | } | |
2678 | ||
1ad6a73e | 2679 | lnet_ipif_free_enumeration(names, n); |
d7e09d03 | 2680 | |
5fd88337 | 2681 | if (!j) |
d7e09d03 PT |
2682 | CERROR("Can't find any usable interfaces\n"); |
2683 | ||
2684 | return j; | |
2685 | } | |
2686 | ||
0b913529 | 2687 | static int |
ff13fd40 | 2688 | ksocknal_search_new_ipif(struct ksock_net *net) |
d7e09d03 | 2689 | { |
97d10d0a MS |
2690 | int new_ipif = 0; |
2691 | int i; | |
d7e09d03 PT |
2692 | |
2693 | for (i = 0; i < net->ksnn_ninterfaces; i++) { | |
97d10d0a MS |
2694 | char *ifnam = &net->ksnn_interfaces[i].ksni_name[0]; |
2695 | char *colon = strchr(ifnam, ':'); | |
2696 | int found = 0; | |
ff13fd40 | 2697 | struct ksock_net *tmp; |
97d10d0a | 2698 | int j; |
d7e09d03 | 2699 | |
06ace26e | 2700 | if (colon) /* ignore alias device */ |
d7e09d03 PT |
2701 | *colon = 0; |
2702 | ||
c314c319 | 2703 | list_for_each_entry(tmp, &ksocknal_data.ksnd_nets, ksnn_list) { |
d7e09d03 | 2704 | for (j = 0; !found && j < tmp->ksnn_ninterfaces; j++) { |
4b18c358 MN |
2705 | char *ifnam2 = |
2706 | &tmp->ksnn_interfaces[j].ksni_name[0]; | |
d7e09d03 PT |
2707 | char *colon2 = strchr(ifnam2, ':'); |
2708 | ||
06ace26e | 2709 | if (colon2) |
d7e09d03 PT |
2710 | *colon2 = 0; |
2711 | ||
5fd88337 | 2712 | found = !strcmp(ifnam, ifnam2); |
06ace26e | 2713 | if (colon2) |
d7e09d03 PT |
2714 | *colon2 = ':'; |
2715 | } | |
2716 | if (found) | |
2717 | break; | |
2718 | } | |
2719 | ||
2720 | new_ipif += !found; | |
06ace26e | 2721 | if (colon) |
d7e09d03 PT |
2722 | *colon = ':'; |
2723 | } | |
2724 | ||
2725 | return new_ipif; | |
2726 | } | |
2727 | ||
0b913529 | 2728 | static int |
d7e09d03 PT |
2729 | ksocknal_start_schedulers(struct ksock_sched_info *info) |
2730 | { | |
97d10d0a MS |
2731 | int nthrs; |
2732 | int rc = 0; | |
2733 | int i; | |
d7e09d03 | 2734 | |
5fd88337 | 2735 | if (!info->ksi_nthreads) { |
d7e09d03 PT |
2736 | if (*ksocknal_tunables.ksnd_nscheds > 0) { |
2737 | nthrs = info->ksi_nthreads_max; | |
2738 | } else { | |
2739 | nthrs = cfs_cpt_weight(lnet_cpt_table(), | |
2740 | info->ksi_cpt); | |
2741 | nthrs = min(max(SOCKNAL_NSCHEDS, nthrs >> 1), nthrs); | |
2742 | nthrs = min(SOCKNAL_NSCHEDS_HIGH, nthrs); | |
2743 | } | |
2744 | nthrs = min(nthrs, info->ksi_nthreads_max); | |
2745 | } else { | |
2746 | LASSERT(info->ksi_nthreads <= info->ksi_nthreads_max); | |
2747 | /* increase two threads if there is new interface */ | |
2748 | nthrs = min(2, info->ksi_nthreads_max - info->ksi_nthreads); | |
2749 | } | |
2750 | ||
2751 | for (i = 0; i < nthrs; i++) { | |
97d10d0a MS |
2752 | long id; |
2753 | char name[20]; | |
ff13fd40 | 2754 | struct ksock_sched *sched; |
50ffcb7e | 2755 | |
d7e09d03 PT |
2756 | id = KSOCK_THREAD_ID(info->ksi_cpt, info->ksi_nthreads + i); |
2757 | sched = &info->ksi_scheds[KSOCK_THREAD_SID(id)]; | |
2758 | snprintf(name, sizeof(name), "socknal_sd%02d_%02d", | |
2759 | info->ksi_cpt, (int)(sched - &info->ksi_scheds[0])); | |
2760 | ||
2761 | rc = ksocknal_thread_start(ksocknal_scheduler, | |
2762 | (void *)id, name); | |
5fd88337 | 2763 | if (!rc) |
d7e09d03 PT |
2764 | continue; |
2765 | ||
2766 | CERROR("Can't spawn thread %d for scheduler[%d]: %d\n", | |
2767 | info->ksi_cpt, info->ksi_nthreads + i, rc); | |
2768 | break; | |
2769 | } | |
2770 | ||
2771 | info->ksi_nthreads += i; | |
2772 | return rc; | |
2773 | } | |
2774 | ||
0b913529 | 2775 | static int |
ff13fd40 | 2776 | ksocknal_net_start_threads(struct ksock_net *net, __u32 *cpts, int ncpts) |
d7e09d03 | 2777 | { |
97d10d0a MS |
2778 | int newif = ksocknal_search_new_ipif(net); |
2779 | int rc; | |
2780 | int i; | |
d7e09d03 PT |
2781 | |
2782 | LASSERT(ncpts > 0 && ncpts <= cfs_cpt_number(lnet_cpt_table())); | |
2783 | ||
2784 | for (i = 0; i < ncpts; i++) { | |
97d10d0a | 2785 | struct ksock_sched_info *info; |
06ace26e | 2786 | int cpt = !cpts ? i : cpts[i]; |
d7e09d03 PT |
2787 | |
2788 | LASSERT(cpt < cfs_cpt_number(lnet_cpt_table())); | |
2789 | info = ksocknal_data.ksnd_sched_info[cpt]; | |
2790 | ||
2791 | if (!newif && info->ksi_nthreads > 0) | |
2792 | continue; | |
2793 | ||
2794 | rc = ksocknal_start_schedulers(info); | |
5fd88337 | 2795 | if (rc) |
d7e09d03 PT |
2796 | return rc; |
2797 | } | |
2798 | return 0; | |
2799 | } | |
2800 | ||
2801 | int | |
d4de2ab8 | 2802 | ksocknal_startup(lnet_ni_t *ni) |
d7e09d03 | 2803 | { |
ff13fd40 | 2804 | struct ksock_net *net; |
97d10d0a MS |
2805 | int rc; |
2806 | int i; | |
d7e09d03 | 2807 | |
d4de2ab8 | 2808 | LASSERT(ni->ni_lnd == &the_ksocklnd); |
d7e09d03 PT |
2809 | |
2810 | if (ksocknal_data.ksnd_init == SOCKNAL_INIT_NOTHING) { | |
2811 | rc = ksocknal_base_startup(); | |
5fd88337 | 2812 | if (rc) |
d7e09d03 PT |
2813 | return rc; |
2814 | } | |
2815 | ||
2816 | LIBCFS_ALLOC(net, sizeof(*net)); | |
06ace26e | 2817 | if (!net) |
d7e09d03 PT |
2818 | goto fail_0; |
2819 | ||
2820 | spin_lock_init(&net->ksnn_lock); | |
2821 | net->ksnn_incarnation = ksocknal_new_incarnation(); | |
2822 | ni->ni_data = net; | |
2823 | ni->ni_peertimeout = *ksocknal_tunables.ksnd_peertimeout; | |
2824 | ni->ni_maxtxcredits = *ksocknal_tunables.ksnd_credits; | |
2825 | ni->ni_peertxcredits = *ksocknal_tunables.ksnd_peertxcredits; | |
2826 | ni->ni_peerrtrcredits = *ksocknal_tunables.ksnd_peerrtrcredits; | |
2827 | ||
06ace26e | 2828 | if (!ni->ni_interfaces[0]) { |
d7e09d03 PT |
2829 | rc = ksocknal_enumerate_interfaces(net); |
2830 | if (rc <= 0) | |
2831 | goto fail_1; | |
2832 | ||
2833 | net->ksnn_ninterfaces = 1; | |
2834 | } else { | |
2835 | for (i = 0; i < LNET_MAX_INTERFACES; i++) { | |
97d10d0a | 2836 | int up; |
d7e09d03 | 2837 | |
06ace26e | 2838 | if (!ni->ni_interfaces[i]) |
d7e09d03 PT |
2839 | break; |
2840 | ||
1ad6a73e | 2841 | rc = lnet_ipif_query(ni->ni_interfaces[i], &up, |
c314c319 JS |
2842 | &net->ksnn_interfaces[i].ksni_ipaddr, |
2843 | &net->ksnn_interfaces[i].ksni_netmask); | |
d7e09d03 | 2844 | |
5fd88337 | 2845 | if (rc) { |
d7e09d03 PT |
2846 | CERROR("Can't get interface %s info: %d\n", |
2847 | ni->ni_interfaces[i], rc); | |
2848 | goto fail_1; | |
2849 | } | |
2850 | ||
2851 | if (!up) { | |
2852 | CERROR("Interface %s is down\n", | |
2853 | ni->ni_interfaces[i]); | |
2854 | goto fail_1; | |
2855 | } | |
2856 | ||
9563fe8a DE |
2857 | strlcpy(net->ksnn_interfaces[i].ksni_name, |
2858 | ni->ni_interfaces[i], | |
2859 | sizeof(net->ksnn_interfaces[i].ksni_name)); | |
d7e09d03 PT |
2860 | } |
2861 | net->ksnn_ninterfaces = i; | |
2862 | } | |
2863 | ||
2864 | /* call it before add it to ksocknal_data.ksnd_nets */ | |
2865 | rc = ksocknal_net_start_threads(net, ni->ni_cpts, ni->ni_ncpts); | |
5fd88337 | 2866 | if (rc) |
d7e09d03 PT |
2867 | goto fail_1; |
2868 | ||
2869 | ni->ni_nid = LNET_MKNID(LNET_NIDNET(ni->ni_nid), | |
2870 | net->ksnn_interfaces[0].ksni_ipaddr); | |
2871 | list_add(&net->ksnn_list, &ksocknal_data.ksnd_nets); | |
2872 | ||
2873 | ksocknal_data.ksnd_nnets++; | |
2874 | ||
2875 | return 0; | |
2876 | ||
2877 | fail_1: | |
2878 | LIBCFS_FREE(net, sizeof(*net)); | |
2879 | fail_0: | |
5fd88337 | 2880 | if (!ksocknal_data.ksnd_nnets) |
d7e09d03 PT |
2881 | ksocknal_base_shutdown(); |
2882 | ||
2883 | return -ENETDOWN; | |
2884 | } | |
2885 | ||
e0f94113 | 2886 | static void __exit ksocklnd_exit(void) |
d7e09d03 PT |
2887 | { |
2888 | lnet_unregister_lnd(&the_ksocklnd); | |
d7e09d03 PT |
2889 | } |
2890 | ||
e0f94113 | 2891 | static int __init ksocklnd_init(void) |
d7e09d03 | 2892 | { |
97d10d0a | 2893 | int rc; |
d7e09d03 PT |
2894 | |
2895 | /* check ksnr_connected/connecting field large enough */ | |
d4de2ab8 HE |
2896 | CLASSERT(SOCKLND_CONN_NTYPES <= 4); |
2897 | CLASSERT(SOCKLND_CONN_ACK == SOCKLND_CONN_BULK_IN); | |
d7e09d03 PT |
2898 | |
2899 | /* initialize the_ksocklnd */ | |
2900 | the_ksocklnd.lnd_type = SOCKLND; | |
2901 | the_ksocklnd.lnd_startup = ksocknal_startup; | |
2902 | the_ksocklnd.lnd_shutdown = ksocknal_shutdown; | |
2903 | the_ksocklnd.lnd_ctl = ksocknal_ctl; | |
2904 | the_ksocklnd.lnd_send = ksocknal_send; | |
2905 | the_ksocklnd.lnd_recv = ksocknal_recv; | |
2906 | the_ksocklnd.lnd_notify = ksocknal_notify; | |
2907 | the_ksocklnd.lnd_query = ksocknal_query; | |
2908 | the_ksocklnd.lnd_accept = ksocknal_accept; | |
2909 | ||
2910 | rc = ksocknal_tunables_init(); | |
5fd88337 | 2911 | if (rc) |
d7e09d03 PT |
2912 | return rc; |
2913 | ||
2914 | lnet_register_lnd(&the_ksocklnd); | |
2915 | ||
2916 | return 0; | |
2917 | } | |
2918 | ||
a0455471 | 2919 | MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>"); |
57878e17 | 2920 | MODULE_DESCRIPTION("TCP Socket LNet Network Driver"); |
5b0e50b9 | 2921 | MODULE_VERSION("2.7.0"); |
d7e09d03 PT |
2922 | MODULE_LICENSE("GPL"); |
2923 | ||
e0f94113 AD |
2924 | module_init(ksocklnd_init); |
2925 | module_exit(ksocklnd_exit); |