Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 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 |
| 18 | * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf |
| 19 | * |
| 20 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 21 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 22 | * have any questions. |
| 23 | * |
| 24 | * GPL HEADER END |
| 25 | */ |
| 26 | /* |
| 27 | * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. |
| 28 | * Use is subject to license terms. |
| 29 | * |
Andreas Dilger | 1dc563a | 2015-11-08 18:09:37 -0500 | [diff] [blame] | 30 | * Copyright (c) 2011, 2015, Intel Corporation. |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 31 | */ |
| 32 | /* |
| 33 | * This file is part of Lustre, http://www.lustre.org/ |
| 34 | * Lustre is a trademark of Sun Microsystems, Inc. |
| 35 | * |
| 36 | * lnet/klnds/o2iblnd/o2iblnd.c |
| 37 | * |
| 38 | * Author: Eric Barton <eric@bartonsoftware.com> |
| 39 | */ |
| 40 | |
Peng Tao | 5f43264 | 2013-06-07 22:07:21 +0800 | [diff] [blame] | 41 | #include <asm/div64.h> |
John L. Hammond | d664d1f | 2015-06-11 15:18:08 -0400 | [diff] [blame] | 42 | #include <asm/page.h> |
| 43 | #include "o2iblnd.h" |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 44 | |
Frank Zago | 439b4d4 | 2016-03-02 17:02:00 -0500 | [diff] [blame] | 45 | static lnd_t the_o2iblnd; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 46 | |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 47 | kib_data_t kiblnd_data; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 48 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 49 | static __u32 kiblnd_cksum(void *ptr, int nob) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 50 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 51 | char *c = ptr; |
| 52 | __u32 sum = 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 53 | |
| 54 | while (nob-- > 0) |
| 55 | sum = ((sum << 1) | (sum >> 31)) + *c++; |
| 56 | |
| 57 | /* ensure I don't return 0 (== no checksum) */ |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 58 | return !sum ? 1 : sum; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 59 | } |
| 60 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 61 | static char *kiblnd_msgtype2str(int type) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 62 | { |
| 63 | switch (type) { |
| 64 | case IBLND_MSG_CONNREQ: |
| 65 | return "CONNREQ"; |
| 66 | |
| 67 | case IBLND_MSG_CONNACK: |
| 68 | return "CONNACK"; |
| 69 | |
| 70 | case IBLND_MSG_NOOP: |
| 71 | return "NOOP"; |
| 72 | |
| 73 | case IBLND_MSG_IMMEDIATE: |
| 74 | return "IMMEDIATE"; |
| 75 | |
| 76 | case IBLND_MSG_PUT_REQ: |
| 77 | return "PUT_REQ"; |
| 78 | |
| 79 | case IBLND_MSG_PUT_NAK: |
| 80 | return "PUT_NAK"; |
| 81 | |
| 82 | case IBLND_MSG_PUT_ACK: |
| 83 | return "PUT_ACK"; |
| 84 | |
| 85 | case IBLND_MSG_PUT_DONE: |
| 86 | return "PUT_DONE"; |
| 87 | |
| 88 | case IBLND_MSG_GET_REQ: |
| 89 | return "GET_REQ"; |
| 90 | |
| 91 | case IBLND_MSG_GET_DONE: |
| 92 | return "GET_DONE"; |
| 93 | |
| 94 | default: |
| 95 | return "???"; |
| 96 | } |
| 97 | } |
| 98 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 99 | static int kiblnd_msgtype2size(int type) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 100 | { |
| 101 | const int hdr_size = offsetof(kib_msg_t, ibm_u); |
| 102 | |
| 103 | switch (type) { |
| 104 | case IBLND_MSG_CONNREQ: |
| 105 | case IBLND_MSG_CONNACK: |
| 106 | return hdr_size + sizeof(kib_connparams_t); |
| 107 | |
| 108 | case IBLND_MSG_NOOP: |
| 109 | return hdr_size; |
| 110 | |
| 111 | case IBLND_MSG_IMMEDIATE: |
| 112 | return offsetof(kib_msg_t, ibm_u.immediate.ibim_payload[0]); |
| 113 | |
| 114 | case IBLND_MSG_PUT_REQ: |
| 115 | return hdr_size + sizeof(kib_putreq_msg_t); |
| 116 | |
| 117 | case IBLND_MSG_PUT_ACK: |
| 118 | return hdr_size + sizeof(kib_putack_msg_t); |
| 119 | |
| 120 | case IBLND_MSG_GET_REQ: |
| 121 | return hdr_size + sizeof(kib_get_msg_t); |
| 122 | |
| 123 | case IBLND_MSG_PUT_NAK: |
| 124 | case IBLND_MSG_PUT_DONE: |
| 125 | case IBLND_MSG_GET_DONE: |
| 126 | return hdr_size + sizeof(kib_completion_msg_t); |
| 127 | default: |
| 128 | return -1; |
| 129 | } |
| 130 | } |
| 131 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 132 | static int kiblnd_unpack_rd(kib_msg_t *msg, int flip) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 133 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 134 | kib_rdma_desc_t *rd; |
| 135 | int nob; |
| 136 | int n; |
| 137 | int i; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 138 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 139 | LASSERT(msg->ibm_type == IBLND_MSG_GET_REQ || |
James Simmons | c314c31 | 2016-02-12 12:06:01 -0500 | [diff] [blame] | 140 | msg->ibm_type == IBLND_MSG_PUT_ACK); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 141 | |
| 142 | rd = msg->ibm_type == IBLND_MSG_GET_REQ ? |
| 143 | &msg->ibm_u.get.ibgm_rd : |
| 144 | &msg->ibm_u.putack.ibpam_rd; |
| 145 | |
| 146 | if (flip) { |
| 147 | __swab32s(&rd->rd_key); |
| 148 | __swab32s(&rd->rd_nfrags); |
| 149 | } |
| 150 | |
| 151 | n = rd->rd_nfrags; |
| 152 | |
| 153 | if (n <= 0 || n > IBLND_MAX_RDMA_FRAGS) { |
| 154 | CERROR("Bad nfrags: %d, should be 0 < n <= %d\n", |
| 155 | n, IBLND_MAX_RDMA_FRAGS); |
| 156 | return 1; |
| 157 | } |
| 158 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 159 | nob = offsetof(kib_msg_t, ibm_u) + |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 160 | kiblnd_rd_msg_size(rd, msg->ibm_type, n); |
| 161 | |
| 162 | if (msg->ibm_nob < nob) { |
| 163 | CERROR("Short %s: %d(%d)\n", |
| 164 | kiblnd_msgtype2str(msg->ibm_type), msg->ibm_nob, nob); |
| 165 | return 1; |
| 166 | } |
| 167 | |
| 168 | if (!flip) |
| 169 | return 0; |
| 170 | |
| 171 | for (i = 0; i < n; i++) { |
| 172 | __swab32s(&rd->rd_frags[i].rf_nob); |
| 173 | __swab64s(&rd->rd_frags[i].rf_addr); |
| 174 | } |
| 175 | |
| 176 | return 0; |
| 177 | } |
| 178 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 179 | void kiblnd_pack_msg(lnet_ni_t *ni, kib_msg_t *msg, int version, |
| 180 | int credits, lnet_nid_t dstnid, __u64 dststamp) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 181 | { |
| 182 | kib_net_t *net = ni->ni_data; |
| 183 | |
James Simmons | 4420cfd | 2016-02-12 12:06:00 -0500 | [diff] [blame] | 184 | /* |
| 185 | * CAVEAT EMPTOR! all message fields not set here should have been |
| 186 | * initialised previously. |
| 187 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 188 | msg->ibm_magic = IBLND_MSG_MAGIC; |
| 189 | msg->ibm_version = version; |
| 190 | /* ibm_type */ |
| 191 | msg->ibm_credits = credits; |
| 192 | /* ibm_nob */ |
| 193 | msg->ibm_cksum = 0; |
| 194 | msg->ibm_srcnid = ni->ni_nid; |
| 195 | msg->ibm_srcstamp = net->ibn_incarnation; |
| 196 | msg->ibm_dstnid = dstnid; |
| 197 | msg->ibm_dststamp = dststamp; |
| 198 | |
| 199 | if (*kiblnd_tunables.kib_cksum) { |
| 200 | /* NB ibm_cksum zero while computing cksum */ |
| 201 | msg->ibm_cksum = kiblnd_cksum(msg, msg->ibm_nob); |
| 202 | } |
| 203 | } |
| 204 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 205 | int kiblnd_unpack_msg(kib_msg_t *msg, int nob) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 206 | { |
| 207 | const int hdr_size = offsetof(kib_msg_t, ibm_u); |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 208 | __u32 msg_cksum; |
| 209 | __u16 version; |
| 210 | int msg_nob; |
| 211 | int flip; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 212 | |
| 213 | /* 6 bytes are enough to have received magic + version */ |
| 214 | if (nob < 6) { |
| 215 | CERROR("Short message: %d\n", nob); |
| 216 | return -EPROTO; |
| 217 | } |
| 218 | |
| 219 | if (msg->ibm_magic == IBLND_MSG_MAGIC) { |
| 220 | flip = 0; |
| 221 | } else if (msg->ibm_magic == __swab32(IBLND_MSG_MAGIC)) { |
| 222 | flip = 1; |
| 223 | } else { |
| 224 | CERROR("Bad magic: %08x\n", msg->ibm_magic); |
| 225 | return -EPROTO; |
| 226 | } |
| 227 | |
| 228 | version = flip ? __swab16(msg->ibm_version) : msg->ibm_version; |
| 229 | if (version != IBLND_MSG_VERSION && |
| 230 | version != IBLND_MSG_VERSION_1) { |
| 231 | CERROR("Bad version: %x\n", version); |
| 232 | return -EPROTO; |
| 233 | } |
| 234 | |
| 235 | if (nob < hdr_size) { |
| 236 | CERROR("Short message: %d\n", nob); |
| 237 | return -EPROTO; |
| 238 | } |
| 239 | |
| 240 | msg_nob = flip ? __swab32(msg->ibm_nob) : msg->ibm_nob; |
| 241 | if (msg_nob > nob) { |
| 242 | CERROR("Short message: got %d, wanted %d\n", nob, msg_nob); |
| 243 | return -EPROTO; |
| 244 | } |
| 245 | |
James Simmons | 4420cfd | 2016-02-12 12:06:00 -0500 | [diff] [blame] | 246 | /* |
| 247 | * checksum must be computed with ibm_cksum zero and BEFORE anything |
| 248 | * gets flipped |
| 249 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 250 | msg_cksum = flip ? __swab32(msg->ibm_cksum) : msg->ibm_cksum; |
| 251 | msg->ibm_cksum = 0; |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 252 | if (msg_cksum && |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 253 | msg_cksum != kiblnd_cksum(msg, msg_nob)) { |
| 254 | CERROR("Bad checksum\n"); |
| 255 | return -EPROTO; |
| 256 | } |
| 257 | |
| 258 | msg->ibm_cksum = msg_cksum; |
| 259 | |
| 260 | if (flip) { |
| 261 | /* leave magic unflipped as a clue to peer endianness */ |
| 262 | msg->ibm_version = version; |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 263 | CLASSERT(sizeof(msg->ibm_type) == 1); |
| 264 | CLASSERT(sizeof(msg->ibm_credits) == 1); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 265 | msg->ibm_nob = msg_nob; |
| 266 | __swab64s(&msg->ibm_srcnid); |
| 267 | __swab64s(&msg->ibm_srcstamp); |
| 268 | __swab64s(&msg->ibm_dstnid); |
| 269 | __swab64s(&msg->ibm_dststamp); |
| 270 | } |
| 271 | |
| 272 | if (msg->ibm_srcnid == LNET_NID_ANY) { |
| 273 | CERROR("Bad src nid: %s\n", libcfs_nid2str(msg->ibm_srcnid)); |
| 274 | return -EPROTO; |
| 275 | } |
| 276 | |
| 277 | if (msg_nob < kiblnd_msgtype2size(msg->ibm_type)) { |
| 278 | CERROR("Short %s: %d(%d)\n", kiblnd_msgtype2str(msg->ibm_type), |
| 279 | msg_nob, kiblnd_msgtype2size(msg->ibm_type)); |
| 280 | return -EPROTO; |
| 281 | } |
| 282 | |
| 283 | switch (msg->ibm_type) { |
| 284 | default: |
| 285 | CERROR("Unknown message type %x\n", msg->ibm_type); |
| 286 | return -EPROTO; |
| 287 | |
| 288 | case IBLND_MSG_NOOP: |
| 289 | case IBLND_MSG_IMMEDIATE: |
| 290 | case IBLND_MSG_PUT_REQ: |
| 291 | break; |
| 292 | |
| 293 | case IBLND_MSG_PUT_ACK: |
| 294 | case IBLND_MSG_GET_REQ: |
| 295 | if (kiblnd_unpack_rd(msg, flip)) |
| 296 | return -EPROTO; |
| 297 | break; |
| 298 | |
| 299 | case IBLND_MSG_PUT_NAK: |
| 300 | case IBLND_MSG_PUT_DONE: |
| 301 | case IBLND_MSG_GET_DONE: |
| 302 | if (flip) |
| 303 | __swab32s(&msg->ibm_u.completion.ibcm_status); |
| 304 | break; |
| 305 | |
| 306 | case IBLND_MSG_CONNREQ: |
| 307 | case IBLND_MSG_CONNACK: |
| 308 | if (flip) { |
| 309 | __swab16s(&msg->ibm_u.connparams.ibcp_queue_depth); |
| 310 | __swab16s(&msg->ibm_u.connparams.ibcp_max_frags); |
| 311 | __swab32s(&msg->ibm_u.connparams.ibcp_max_msg_size); |
| 312 | } |
| 313 | break; |
| 314 | } |
| 315 | return 0; |
| 316 | } |
| 317 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 318 | int kiblnd_create_peer(lnet_ni_t *ni, kib_peer_t **peerp, lnet_nid_t nid) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 319 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 320 | kib_peer_t *peer; |
| 321 | kib_net_t *net = ni->ni_data; |
| 322 | int cpt = lnet_cpt_of_nid(nid); |
| 323 | unsigned long flags; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 324 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 325 | LASSERT(net); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 326 | LASSERT(nid != LNET_NID_ANY); |
| 327 | |
| 328 | LIBCFS_CPT_ALLOC(peer, lnet_cpt_table(), cpt, sizeof(*peer)); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 329 | if (!peer) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 330 | CERROR("Cannot allocate peer\n"); |
| 331 | return -ENOMEM; |
| 332 | } |
| 333 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 334 | peer->ibp_ni = ni; |
| 335 | peer->ibp_nid = nid; |
| 336 | peer->ibp_error = 0; |
| 337 | peer->ibp_last_alive = 0; |
Amir Shehata | 9e7d5bf | 2016-05-06 21:30:25 -0400 | [diff] [blame] | 338 | peer->ibp_max_frags = kiblnd_cfg_rdma_frags(peer->ibp_ni); |
Amir Shehata | f6e5006 | 2016-05-06 21:30:27 -0400 | [diff] [blame] | 339 | peer->ibp_queue_depth = ni->ni_peertxcredits; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 340 | atomic_set(&peer->ibp_refcount, 1); /* 1 ref for caller */ |
| 341 | |
| 342 | INIT_LIST_HEAD(&peer->ibp_list); /* not in the peer table yet */ |
| 343 | INIT_LIST_HEAD(&peer->ibp_conns); |
| 344 | INIT_LIST_HEAD(&peer->ibp_tx_queue); |
| 345 | |
| 346 | write_lock_irqsave(&kiblnd_data.kib_global_lock, flags); |
| 347 | |
| 348 | /* always called with a ref on ni, which prevents ni being shutdown */ |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 349 | LASSERT(!net->ibn_shutdown); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 350 | |
| 351 | /* npeers only grows with the global lock held */ |
| 352 | atomic_inc(&net->ibn_npeers); |
| 353 | |
| 354 | write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags); |
| 355 | |
| 356 | *peerp = peer; |
| 357 | return 0; |
| 358 | } |
| 359 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 360 | void kiblnd_destroy_peer(kib_peer_t *peer) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 361 | { |
| 362 | kib_net_t *net = peer->ibp_ni->ni_data; |
| 363 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 364 | LASSERT(net); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 365 | LASSERT(!atomic_read(&peer->ibp_refcount)); |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 366 | LASSERT(!kiblnd_peer_active(peer)); |
Liang Zhen | 4d99b25 | 2016-03-02 18:53:29 -0500 | [diff] [blame] | 367 | LASSERT(kiblnd_peer_idle(peer)); |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 368 | LASSERT(list_empty(&peer->ibp_tx_queue)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 369 | |
| 370 | LIBCFS_FREE(peer, sizeof(*peer)); |
| 371 | |
James Simmons | 4420cfd | 2016-02-12 12:06:00 -0500 | [diff] [blame] | 372 | /* |
| 373 | * NB a peer's connections keep a reference on their peer until |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 374 | * they are destroyed, so we can be assured that _all_ state to do |
| 375 | * with this peer has been cleaned up when its refcount drops to |
James Simmons | 4420cfd | 2016-02-12 12:06:00 -0500 | [diff] [blame] | 376 | * zero. |
| 377 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 378 | atomic_dec(&net->ibn_npeers); |
| 379 | } |
| 380 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 381 | kib_peer_t *kiblnd_find_peer_locked(lnet_nid_t nid) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 382 | { |
James Simmons | 4420cfd | 2016-02-12 12:06:00 -0500 | [diff] [blame] | 383 | /* |
| 384 | * the caller is responsible for accounting the additional reference |
| 385 | * that this creates |
| 386 | */ |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 387 | struct list_head *peer_list = kiblnd_nid2peerlist(nid); |
| 388 | struct list_head *tmp; |
| 389 | kib_peer_t *peer; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 390 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 391 | list_for_each(tmp, peer_list) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 392 | peer = list_entry(tmp, kib_peer_t, ibp_list); |
Liang Zhen | 4d99b25 | 2016-03-02 18:53:29 -0500 | [diff] [blame] | 393 | LASSERT(!kiblnd_peer_idle(peer)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 394 | |
| 395 | if (peer->ibp_nid != nid) |
| 396 | continue; |
| 397 | |
| 398 | CDEBUG(D_NET, "got peer [%p] -> %s (%d) version: %x\n", |
| 399 | peer, libcfs_nid2str(nid), |
| 400 | atomic_read(&peer->ibp_refcount), |
| 401 | peer->ibp_version); |
| 402 | return peer; |
| 403 | } |
| 404 | return NULL; |
| 405 | } |
| 406 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 407 | void kiblnd_unlink_peer_locked(kib_peer_t *peer) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 408 | { |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 409 | LASSERT(list_empty(&peer->ibp_conns)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 410 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 411 | LASSERT(kiblnd_peer_active(peer)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 412 | list_del_init(&peer->ibp_list); |
| 413 | /* lose peerlist's ref */ |
| 414 | kiblnd_peer_decref(peer); |
| 415 | } |
| 416 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 417 | static int kiblnd_get_peer_info(lnet_ni_t *ni, int index, |
| 418 | lnet_nid_t *nidp, int *count) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 419 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 420 | kib_peer_t *peer; |
| 421 | struct list_head *ptmp; |
| 422 | int i; |
| 423 | unsigned long flags; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 424 | |
| 425 | read_lock_irqsave(&kiblnd_data.kib_global_lock, flags); |
| 426 | |
| 427 | for (i = 0; i < kiblnd_data.kib_peer_hash_size; i++) { |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 428 | list_for_each(ptmp, &kiblnd_data.kib_peers[i]) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 429 | peer = list_entry(ptmp, kib_peer_t, ibp_list); |
Liang Zhen | 4d99b25 | 2016-03-02 18:53:29 -0500 | [diff] [blame] | 430 | LASSERT(!kiblnd_peer_idle(peer)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 431 | |
| 432 | if (peer->ibp_ni != ni) |
| 433 | continue; |
| 434 | |
| 435 | if (index-- > 0) |
| 436 | continue; |
| 437 | |
| 438 | *nidp = peer->ibp_nid; |
| 439 | *count = atomic_read(&peer->ibp_refcount); |
| 440 | |
| 441 | read_unlock_irqrestore(&kiblnd_data.kib_global_lock, |
| 442 | flags); |
| 443 | return 0; |
| 444 | } |
| 445 | } |
| 446 | |
| 447 | read_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags); |
| 448 | return -ENOENT; |
| 449 | } |
| 450 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 451 | static void kiblnd_del_peer_locked(kib_peer_t *peer) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 452 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 453 | struct list_head *ctmp; |
| 454 | struct list_head *cnxt; |
| 455 | kib_conn_t *conn; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 456 | |
| 457 | if (list_empty(&peer->ibp_conns)) { |
| 458 | kiblnd_unlink_peer_locked(peer); |
| 459 | } else { |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 460 | list_for_each_safe(ctmp, cnxt, &peer->ibp_conns) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 461 | conn = list_entry(ctmp, kib_conn_t, ibc_list); |
| 462 | |
| 463 | kiblnd_close_conn_locked(conn, 0); |
| 464 | } |
| 465 | /* NB closing peer's last conn unlinked it. */ |
| 466 | } |
James Simmons | 4420cfd | 2016-02-12 12:06:00 -0500 | [diff] [blame] | 467 | /* |
| 468 | * NB peer now unlinked; might even be freed if the peer table had the |
| 469 | * last ref on it. |
| 470 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 471 | } |
| 472 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 473 | static int kiblnd_del_peer(lnet_ni_t *ni, lnet_nid_t nid) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 474 | { |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 475 | LIST_HEAD(zombies); |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 476 | struct list_head *ptmp; |
| 477 | struct list_head *pnxt; |
| 478 | kib_peer_t *peer; |
| 479 | int lo; |
| 480 | int hi; |
| 481 | int i; |
| 482 | unsigned long flags; |
| 483 | int rc = -ENOENT; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 484 | |
| 485 | write_lock_irqsave(&kiblnd_data.kib_global_lock, flags); |
| 486 | |
| 487 | if (nid != LNET_NID_ANY) { |
James Simmons | d3d3d37 | 2016-02-12 12:06:05 -0500 | [diff] [blame] | 488 | lo = kiblnd_nid2peerlist(nid) - kiblnd_data.kib_peers; |
| 489 | hi = kiblnd_nid2peerlist(nid) - kiblnd_data.kib_peers; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 490 | } else { |
| 491 | lo = 0; |
| 492 | hi = kiblnd_data.kib_peer_hash_size - 1; |
| 493 | } |
| 494 | |
| 495 | for (i = lo; i <= hi; i++) { |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 496 | list_for_each_safe(ptmp, pnxt, &kiblnd_data.kib_peers[i]) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 497 | peer = list_entry(ptmp, kib_peer_t, ibp_list); |
Liang Zhen | 4d99b25 | 2016-03-02 18:53:29 -0500 | [diff] [blame] | 498 | LASSERT(!kiblnd_peer_idle(peer)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 499 | |
| 500 | if (peer->ibp_ni != ni) |
| 501 | continue; |
| 502 | |
| 503 | if (!(nid == LNET_NID_ANY || peer->ibp_nid == nid)) |
| 504 | continue; |
| 505 | |
| 506 | if (!list_empty(&peer->ibp_tx_queue)) { |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 507 | LASSERT(list_empty(&peer->ibp_conns)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 508 | |
| 509 | list_splice_init(&peer->ibp_tx_queue, |
James Simmons | c314c31 | 2016-02-12 12:06:01 -0500 | [diff] [blame] | 510 | &zombies); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 511 | } |
| 512 | |
| 513 | kiblnd_del_peer_locked(peer); |
| 514 | rc = 0; /* matched something */ |
| 515 | } |
| 516 | } |
| 517 | |
| 518 | write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags); |
| 519 | |
| 520 | kiblnd_txlist_done(ni, &zombies, -EIO); |
| 521 | |
| 522 | return rc; |
| 523 | } |
| 524 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 525 | static kib_conn_t *kiblnd_get_conn_by_idx(lnet_ni_t *ni, int index) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 526 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 527 | kib_peer_t *peer; |
| 528 | struct list_head *ptmp; |
| 529 | kib_conn_t *conn; |
| 530 | struct list_head *ctmp; |
| 531 | int i; |
| 532 | unsigned long flags; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 533 | |
| 534 | read_lock_irqsave(&kiblnd_data.kib_global_lock, flags); |
| 535 | |
| 536 | for (i = 0; i < kiblnd_data.kib_peer_hash_size; i++) { |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 537 | list_for_each(ptmp, &kiblnd_data.kib_peers[i]) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 538 | peer = list_entry(ptmp, kib_peer_t, ibp_list); |
Liang Zhen | 4d99b25 | 2016-03-02 18:53:29 -0500 | [diff] [blame] | 539 | LASSERT(!kiblnd_peer_idle(peer)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 540 | |
| 541 | if (peer->ibp_ni != ni) |
| 542 | continue; |
| 543 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 544 | list_for_each(ctmp, &peer->ibp_conns) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 545 | if (index-- > 0) |
| 546 | continue; |
| 547 | |
| 548 | conn = list_entry(ctmp, kib_conn_t, |
James Simmons | c314c31 | 2016-02-12 12:06:01 -0500 | [diff] [blame] | 549 | ibc_list); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 550 | kiblnd_conn_addref(conn); |
Guillaume Matheron | 7a3888a | 2015-04-02 19:52:07 +0200 | [diff] [blame] | 551 | read_unlock_irqrestore( |
| 552 | &kiblnd_data.kib_global_lock, |
| 553 | flags); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 554 | return conn; |
| 555 | } |
| 556 | } |
| 557 | } |
| 558 | |
| 559 | read_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags); |
| 560 | return NULL; |
| 561 | } |
| 562 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 563 | int kiblnd_translate_mtu(int value) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 564 | { |
| 565 | switch (value) { |
| 566 | default: |
| 567 | return -1; |
| 568 | case 0: |
| 569 | return 0; |
| 570 | case 256: |
| 571 | return IB_MTU_256; |
| 572 | case 512: |
| 573 | return IB_MTU_512; |
| 574 | case 1024: |
| 575 | return IB_MTU_1024; |
| 576 | case 2048: |
| 577 | return IB_MTU_2048; |
| 578 | case 4096: |
| 579 | return IB_MTU_4096; |
| 580 | } |
| 581 | } |
| 582 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 583 | static void kiblnd_setup_mtu_locked(struct rdma_cm_id *cmid) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 584 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 585 | int mtu; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 586 | |
| 587 | /* XXX There is no path record for iWARP, set by netdev->change_mtu? */ |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 588 | if (!cmid->route.path_rec) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 589 | return; |
| 590 | |
| 591 | mtu = kiblnd_translate_mtu(*kiblnd_tunables.kib_ib_mtu); |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 592 | LASSERT(mtu >= 0); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 593 | if (mtu) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 594 | cmid->route.path_rec->mtu = mtu; |
| 595 | } |
| 596 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 597 | static int kiblnd_get_completion_vector(kib_conn_t *conn, int cpt) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 598 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 599 | cpumask_t *mask; |
| 600 | int vectors; |
| 601 | int off; |
| 602 | int i; |
| 603 | lnet_nid_t nid = conn->ibc_peer->ibp_nid; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 604 | |
| 605 | vectors = conn->ibc_cmid->device->num_comp_vectors; |
| 606 | if (vectors <= 1) |
| 607 | return 0; |
| 608 | |
| 609 | mask = cfs_cpt_cpumask(lnet_cpt_table(), cpt); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 610 | if (!mask) |
Peng Tao | 3867ea5 | 2013-07-15 22:27:10 +0800 | [diff] [blame] | 611 | return 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 612 | |
| 613 | /* hash NID to CPU id in this partition... */ |
Oleg Drokin | 4a316f7 | 2015-03-07 19:24:27 -0500 | [diff] [blame] | 614 | off = do_div(nid, cpumask_weight(mask)); |
| 615 | for_each_cpu(i, mask) { |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 616 | if (!off--) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 617 | return i % vectors; |
| 618 | } |
| 619 | |
| 620 | LBUG(); |
| 621 | return 1; |
| 622 | } |
| 623 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 624 | kib_conn_t *kiblnd_create_conn(kib_peer_t *peer, struct rdma_cm_id *cmid, |
Amir Shehata | a01fa10 | 2016-03-02 18:53:25 -0500 | [diff] [blame] | 625 | int state, int version) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 626 | { |
James Simmons | 4420cfd | 2016-02-12 12:06:00 -0500 | [diff] [blame] | 627 | /* |
| 628 | * CAVEAT EMPTOR: |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 629 | * If the new conn is created successfully it takes over the caller's |
| 630 | * ref on 'peer'. It also "owns" 'cmid' and destroys it when it itself |
| 631 | * is destroyed. On failure, the caller's ref on 'peer' remains and |
| 632 | * she must dispose of 'cmid'. (Actually I'd block forever if I tried |
| 633 | * to destroy 'cmid' here since I'm called from the CM which still has |
James Simmons | 4420cfd | 2016-02-12 12:06:00 -0500 | [diff] [blame] | 634 | * its ref on 'cmid'). |
| 635 | */ |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 636 | rwlock_t *glock = &kiblnd_data.kib_global_lock; |
| 637 | kib_net_t *net = peer->ibp_ni->ni_data; |
| 638 | kib_dev_t *dev; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 639 | struct ib_qp_init_attr *init_qp_attr; |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 640 | struct kib_sched_info *sched; |
Linus Torvalds | 23908db | 2015-06-26 15:46:08 -0700 | [diff] [blame] | 641 | struct ib_cq_init_attr cq_attr = {}; |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 642 | kib_conn_t *conn; |
| 643 | struct ib_cq *cq; |
| 644 | unsigned long flags; |
| 645 | int cpt; |
| 646 | int rc; |
| 647 | int i; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 648 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 649 | LASSERT(net); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 650 | LASSERT(!in_interrupt()); |
| 651 | |
| 652 | dev = net->ibn_dev; |
| 653 | |
| 654 | cpt = lnet_cpt_of_nid(peer->ibp_nid); |
| 655 | sched = kiblnd_data.kib_scheds[cpt]; |
| 656 | |
| 657 | LASSERT(sched->ibs_nthreads > 0); |
| 658 | |
| 659 | LIBCFS_CPT_ALLOC(init_qp_attr, lnet_cpt_table(), cpt, |
| 660 | sizeof(*init_qp_attr)); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 661 | if (!init_qp_attr) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 662 | CERROR("Can't allocate qp_attr for %s\n", |
| 663 | libcfs_nid2str(peer->ibp_nid)); |
| 664 | goto failed_0; |
| 665 | } |
| 666 | |
| 667 | LIBCFS_CPT_ALLOC(conn, lnet_cpt_table(), cpt, sizeof(*conn)); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 668 | if (!conn) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 669 | CERROR("Can't allocate connection for %s\n", |
| 670 | libcfs_nid2str(peer->ibp_nid)); |
| 671 | goto failed_1; |
| 672 | } |
| 673 | |
| 674 | conn->ibc_state = IBLND_CONN_INIT; |
| 675 | conn->ibc_version = version; |
| 676 | conn->ibc_peer = peer; /* I take the caller's ref */ |
| 677 | cmid->context = conn; /* for future CM callbacks */ |
| 678 | conn->ibc_cmid = cmid; |
Amir Shehata | a01fa10 | 2016-03-02 18:53:25 -0500 | [diff] [blame] | 679 | conn->ibc_max_frags = peer->ibp_max_frags; |
| 680 | conn->ibc_queue_depth = peer->ibp_queue_depth; |
Jeremy Filizetti | 2fb44f2 | 2016-03-02 18:53:24 -0500 | [diff] [blame] | 681 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 682 | INIT_LIST_HEAD(&conn->ibc_early_rxs); |
| 683 | INIT_LIST_HEAD(&conn->ibc_tx_noops); |
| 684 | INIT_LIST_HEAD(&conn->ibc_tx_queue); |
| 685 | INIT_LIST_HEAD(&conn->ibc_tx_queue_rsrvd); |
| 686 | INIT_LIST_HEAD(&conn->ibc_tx_queue_nocred); |
| 687 | INIT_LIST_HEAD(&conn->ibc_active_txs); |
| 688 | spin_lock_init(&conn->ibc_lock); |
| 689 | |
| 690 | LIBCFS_CPT_ALLOC(conn->ibc_connvars, lnet_cpt_table(), cpt, |
| 691 | sizeof(*conn->ibc_connvars)); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 692 | if (!conn->ibc_connvars) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 693 | CERROR("Can't allocate in-progress connection state\n"); |
| 694 | goto failed_2; |
| 695 | } |
| 696 | |
| 697 | write_lock_irqsave(glock, flags); |
| 698 | if (dev->ibd_failover) { |
| 699 | write_unlock_irqrestore(glock, flags); |
| 700 | CERROR("%s: failover in progress\n", dev->ibd_ifname); |
| 701 | goto failed_2; |
| 702 | } |
| 703 | |
| 704 | if (dev->ibd_hdev->ibh_ibdev != cmid->device) { |
| 705 | /* wakeup failover thread and teardown connection */ |
| 706 | if (kiblnd_dev_can_failover(dev)) { |
| 707 | list_add_tail(&dev->ibd_fail_list, |
| 708 | &kiblnd_data.kib_failed_devs); |
| 709 | wake_up(&kiblnd_data.kib_failover_waitq); |
| 710 | } |
| 711 | |
| 712 | write_unlock_irqrestore(glock, flags); |
| 713 | CERROR("cmid HCA(%s), kib_dev(%s) need failover\n", |
| 714 | cmid->device->name, dev->ibd_ifname); |
| 715 | goto failed_2; |
| 716 | } |
| 717 | |
| 718 | kiblnd_hdev_addref_locked(dev->ibd_hdev); |
| 719 | conn->ibc_hdev = dev->ibd_hdev; |
| 720 | |
| 721 | kiblnd_setup_mtu_locked(cmid); |
| 722 | |
| 723 | write_unlock_irqrestore(glock, flags); |
| 724 | |
| 725 | LIBCFS_CPT_ALLOC(conn->ibc_rxs, lnet_cpt_table(), cpt, |
Jeremy Filizetti | 2fb44f2 | 2016-03-02 18:53:24 -0500 | [diff] [blame] | 726 | IBLND_RX_MSGS(conn) * sizeof(kib_rx_t)); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 727 | if (!conn->ibc_rxs) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 728 | CERROR("Cannot allocate RX buffers\n"); |
| 729 | goto failed_2; |
| 730 | } |
| 731 | |
| 732 | rc = kiblnd_alloc_pages(&conn->ibc_rx_pages, cpt, |
Jeremy Filizetti | 2fb44f2 | 2016-03-02 18:53:24 -0500 | [diff] [blame] | 733 | IBLND_RX_MSG_PAGES(conn)); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 734 | if (rc) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 735 | goto failed_2; |
| 736 | |
| 737 | kiblnd_map_rx_descs(conn); |
| 738 | |
Jeremy Filizetti | 2fb44f2 | 2016-03-02 18:53:24 -0500 | [diff] [blame] | 739 | cq_attr.cqe = IBLND_CQ_ENTRIES(conn); |
Matan Barak | 8e37210 | 2015-06-11 16:35:21 +0300 | [diff] [blame] | 740 | cq_attr.comp_vector = kiblnd_get_completion_vector(conn, cpt); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 741 | cq = ib_create_cq(cmid->device, |
| 742 | kiblnd_cq_completion, kiblnd_cq_event, conn, |
Matan Barak | 8e37210 | 2015-06-11 16:35:21 +0300 | [diff] [blame] | 743 | &cq_attr); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 744 | if (IS_ERR(cq)) { |
Jeremy Filizetti | 2fb44f2 | 2016-03-02 18:53:24 -0500 | [diff] [blame] | 745 | CERROR("Failed to create CQ with %d CQEs: %ld\n", |
| 746 | IBLND_CQ_ENTRIES(conn), PTR_ERR(cq)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 747 | goto failed_2; |
| 748 | } |
| 749 | |
| 750 | conn->ibc_cq = cq; |
| 751 | |
| 752 | rc = ib_req_notify_cq(cq, IB_CQ_NEXT_COMP); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 753 | if (rc) { |
Frank Zago | 9c37966 | 2016-03-02 17:02:02 -0500 | [diff] [blame] | 754 | CERROR("Can't request completion notification: %d\n", rc); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 755 | goto failed_2; |
| 756 | } |
| 757 | |
| 758 | init_qp_attr->event_handler = kiblnd_qp_event; |
| 759 | init_qp_attr->qp_context = conn; |
Jeremy Filizetti | 2fb44f2 | 2016-03-02 18:53:24 -0500 | [diff] [blame] | 760 | init_qp_attr->cap.max_send_wr = IBLND_SEND_WRS(conn); |
| 761 | init_qp_attr->cap.max_recv_wr = IBLND_RECV_WRS(conn); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 762 | init_qp_attr->cap.max_send_sge = 1; |
| 763 | init_qp_attr->cap.max_recv_sge = 1; |
| 764 | init_qp_attr->sq_sig_type = IB_SIGNAL_REQ_WR; |
| 765 | init_qp_attr->qp_type = IB_QPT_RC; |
| 766 | init_qp_attr->send_cq = cq; |
| 767 | init_qp_attr->recv_cq = cq; |
| 768 | |
| 769 | conn->ibc_sched = sched; |
| 770 | |
| 771 | rc = rdma_create_qp(cmid, conn->ibc_hdev->ibh_pd, init_qp_attr); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 772 | if (rc) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 773 | CERROR("Can't create QP: %d, send_wr: %d, recv_wr: %d\n", |
| 774 | rc, init_qp_attr->cap.max_send_wr, |
| 775 | init_qp_attr->cap.max_recv_wr); |
| 776 | goto failed_2; |
| 777 | } |
| 778 | |
| 779 | LIBCFS_FREE(init_qp_attr, sizeof(*init_qp_attr)); |
| 780 | |
| 781 | /* 1 ref for caller and each rxmsg */ |
Jeremy Filizetti | 2fb44f2 | 2016-03-02 18:53:24 -0500 | [diff] [blame] | 782 | atomic_set(&conn->ibc_refcount, 1 + IBLND_RX_MSGS(conn)); |
| 783 | conn->ibc_nrx = IBLND_RX_MSGS(conn); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 784 | |
| 785 | /* post receives */ |
Jeremy Filizetti | 2fb44f2 | 2016-03-02 18:53:24 -0500 | [diff] [blame] | 786 | for (i = 0; i < IBLND_RX_MSGS(conn); i++) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 787 | rc = kiblnd_post_rx(&conn->ibc_rxs[i], |
| 788 | IBLND_POSTRX_NO_CREDIT); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 789 | if (rc) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 790 | CERROR("Can't post rxmsg: %d\n", rc); |
| 791 | |
| 792 | /* Make posted receives complete */ |
| 793 | kiblnd_abort_receives(conn); |
| 794 | |
James Simmons | 4420cfd | 2016-02-12 12:06:00 -0500 | [diff] [blame] | 795 | /* |
| 796 | * correct # of posted buffers |
| 797 | * NB locking needed now I'm racing with completion |
| 798 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 799 | spin_lock_irqsave(&sched->ibs_lock, flags); |
Jeremy Filizetti | 2fb44f2 | 2016-03-02 18:53:24 -0500 | [diff] [blame] | 800 | conn->ibc_nrx -= IBLND_RX_MSGS(conn) - i; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 801 | spin_unlock_irqrestore(&sched->ibs_lock, flags); |
| 802 | |
James Simmons | 4420cfd | 2016-02-12 12:06:00 -0500 | [diff] [blame] | 803 | /* |
| 804 | * cmid will be destroyed by CM(ofed) after cm_callback |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 805 | * returned, so we can't refer it anymore |
James Simmons | 4420cfd | 2016-02-12 12:06:00 -0500 | [diff] [blame] | 806 | * (by kiblnd_connd()->kiblnd_destroy_conn) |
| 807 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 808 | rdma_destroy_qp(conn->ibc_cmid); |
| 809 | conn->ibc_cmid = NULL; |
| 810 | |
| 811 | /* Drop my own and unused rxbuffer refcounts */ |
Jeremy Filizetti | 2fb44f2 | 2016-03-02 18:53:24 -0500 | [diff] [blame] | 812 | while (i++ <= IBLND_RX_MSGS(conn)) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 813 | kiblnd_conn_decref(conn); |
| 814 | |
| 815 | return NULL; |
| 816 | } |
| 817 | } |
| 818 | |
| 819 | /* Init successful! */ |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 820 | LASSERT(state == IBLND_CONN_ACTIVE_CONNECT || |
James Simmons | c314c31 | 2016-02-12 12:06:01 -0500 | [diff] [blame] | 821 | state == IBLND_CONN_PASSIVE_WAIT); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 822 | conn->ibc_state = state; |
| 823 | |
| 824 | /* 1 more conn */ |
| 825 | atomic_inc(&net->ibn_nconns); |
| 826 | return conn; |
| 827 | |
| 828 | failed_2: |
Liang Zhen | 4d99b25 | 2016-03-02 18:53:29 -0500 | [diff] [blame] | 829 | kiblnd_destroy_conn(conn, true); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 830 | failed_1: |
| 831 | LIBCFS_FREE(init_qp_attr, sizeof(*init_qp_attr)); |
| 832 | failed_0: |
| 833 | return NULL; |
| 834 | } |
| 835 | |
Liang Zhen | 4d99b25 | 2016-03-02 18:53:29 -0500 | [diff] [blame] | 836 | void kiblnd_destroy_conn(kib_conn_t *conn, bool free_conn) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 837 | { |
| 838 | struct rdma_cm_id *cmid = conn->ibc_cmid; |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 839 | kib_peer_t *peer = conn->ibc_peer; |
| 840 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 841 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 842 | LASSERT(!in_interrupt()); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 843 | LASSERT(!atomic_read(&conn->ibc_refcount)); |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 844 | LASSERT(list_empty(&conn->ibc_early_rxs)); |
| 845 | LASSERT(list_empty(&conn->ibc_tx_noops)); |
| 846 | LASSERT(list_empty(&conn->ibc_tx_queue)); |
| 847 | LASSERT(list_empty(&conn->ibc_tx_queue_rsrvd)); |
| 848 | LASSERT(list_empty(&conn->ibc_tx_queue_nocred)); |
| 849 | LASSERT(list_empty(&conn->ibc_active_txs)); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 850 | LASSERT(!conn->ibc_noops_posted); |
| 851 | LASSERT(!conn->ibc_nsends_posted); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 852 | |
| 853 | switch (conn->ibc_state) { |
| 854 | default: |
| 855 | /* conn must be completely disengaged from the network */ |
| 856 | LBUG(); |
| 857 | |
| 858 | case IBLND_CONN_DISCONNECTED: |
| 859 | /* connvars should have been freed already */ |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 860 | LASSERT(!conn->ibc_connvars); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 861 | break; |
| 862 | |
| 863 | case IBLND_CONN_INIT: |
| 864 | break; |
| 865 | } |
| 866 | |
| 867 | /* conn->ibc_cmid might be destroyed by CM already */ |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 868 | if (cmid && cmid->qp) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 869 | rdma_destroy_qp(cmid); |
| 870 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 871 | if (conn->ibc_cq) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 872 | rc = ib_destroy_cq(conn->ibc_cq); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 873 | if (rc) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 874 | CWARN("Error destroying CQ: %d\n", rc); |
| 875 | } |
| 876 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 877 | if (conn->ibc_rx_pages) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 878 | kiblnd_unmap_rx_descs(conn); |
| 879 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 880 | if (conn->ibc_rxs) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 881 | LIBCFS_FREE(conn->ibc_rxs, |
Jeremy Filizetti | 2fb44f2 | 2016-03-02 18:53:24 -0500 | [diff] [blame] | 882 | IBLND_RX_MSGS(conn) * sizeof(kib_rx_t)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 883 | } |
| 884 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 885 | if (conn->ibc_connvars) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 886 | LIBCFS_FREE(conn->ibc_connvars, sizeof(*conn->ibc_connvars)); |
| 887 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 888 | if (conn->ibc_hdev) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 889 | kiblnd_hdev_decref(conn->ibc_hdev); |
| 890 | |
| 891 | /* See CAVEAT EMPTOR above in kiblnd_create_conn */ |
| 892 | if (conn->ibc_state != IBLND_CONN_INIT) { |
| 893 | kib_net_t *net = peer->ibp_ni->ni_data; |
| 894 | |
| 895 | kiblnd_peer_decref(peer); |
| 896 | rdma_destroy_id(cmid); |
| 897 | atomic_dec(&net->ibn_nconns); |
| 898 | } |
| 899 | |
| 900 | LIBCFS_FREE(conn, sizeof(*conn)); |
| 901 | } |
| 902 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 903 | int kiblnd_close_peer_conns_locked(kib_peer_t *peer, int why) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 904 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 905 | kib_conn_t *conn; |
| 906 | struct list_head *ctmp; |
| 907 | struct list_head *cnxt; |
| 908 | int count = 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 909 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 910 | list_for_each_safe(ctmp, cnxt, &peer->ibp_conns) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 911 | conn = list_entry(ctmp, kib_conn_t, ibc_list); |
| 912 | |
Joe Perches | 2d00bd1 | 2014-11-23 11:28:50 -0800 | [diff] [blame] | 913 | CDEBUG(D_NET, "Closing conn -> %s, version: %x, reason: %d\n", |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 914 | libcfs_nid2str(peer->ibp_nid), |
| 915 | conn->ibc_version, why); |
| 916 | |
| 917 | kiblnd_close_conn_locked(conn, why); |
| 918 | count++; |
| 919 | } |
| 920 | |
| 921 | return count; |
| 922 | } |
| 923 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 924 | int kiblnd_close_stale_conns_locked(kib_peer_t *peer, |
James Simmons | c314c31 | 2016-02-12 12:06:01 -0500 | [diff] [blame] | 925 | int version, __u64 incarnation) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 926 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 927 | kib_conn_t *conn; |
| 928 | struct list_head *ctmp; |
| 929 | struct list_head *cnxt; |
| 930 | int count = 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 931 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 932 | list_for_each_safe(ctmp, cnxt, &peer->ibp_conns) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 933 | conn = list_entry(ctmp, kib_conn_t, ibc_list); |
| 934 | |
| 935 | if (conn->ibc_version == version && |
| 936 | conn->ibc_incarnation == incarnation) |
| 937 | continue; |
| 938 | |
Guillaume Matheron | 7a3888a | 2015-04-02 19:52:07 +0200 | [diff] [blame] | 939 | CDEBUG(D_NET, |
| 940 | "Closing stale conn -> %s version: %x, incarnation:%#llx(%x, %#llx)\n", |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 941 | libcfs_nid2str(peer->ibp_nid), |
| 942 | conn->ibc_version, conn->ibc_incarnation, |
| 943 | version, incarnation); |
| 944 | |
| 945 | kiblnd_close_conn_locked(conn, -ESTALE); |
| 946 | count++; |
| 947 | } |
| 948 | |
| 949 | return count; |
| 950 | } |
| 951 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 952 | static int kiblnd_close_matching_conns(lnet_ni_t *ni, lnet_nid_t nid) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 953 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 954 | kib_peer_t *peer; |
| 955 | struct list_head *ptmp; |
| 956 | struct list_head *pnxt; |
| 957 | int lo; |
| 958 | int hi; |
| 959 | int i; |
| 960 | unsigned long flags; |
| 961 | int count = 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 962 | |
| 963 | write_lock_irqsave(&kiblnd_data.kib_global_lock, flags); |
| 964 | |
James Simmons | d3d3d37 | 2016-02-12 12:06:05 -0500 | [diff] [blame] | 965 | if (nid != LNET_NID_ANY) { |
| 966 | lo = kiblnd_nid2peerlist(nid) - kiblnd_data.kib_peers; |
| 967 | hi = kiblnd_nid2peerlist(nid) - kiblnd_data.kib_peers; |
| 968 | } else { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 969 | lo = 0; |
| 970 | hi = kiblnd_data.kib_peer_hash_size - 1; |
| 971 | } |
| 972 | |
| 973 | for (i = lo; i <= hi; i++) { |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 974 | list_for_each_safe(ptmp, pnxt, &kiblnd_data.kib_peers[i]) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 975 | peer = list_entry(ptmp, kib_peer_t, ibp_list); |
Liang Zhen | 4d99b25 | 2016-03-02 18:53:29 -0500 | [diff] [blame] | 976 | LASSERT(!kiblnd_peer_idle(peer)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 977 | |
| 978 | if (peer->ibp_ni != ni) |
| 979 | continue; |
| 980 | |
| 981 | if (!(nid == LNET_NID_ANY || nid == peer->ibp_nid)) |
| 982 | continue; |
| 983 | |
| 984 | count += kiblnd_close_peer_conns_locked(peer, 0); |
| 985 | } |
| 986 | } |
| 987 | |
| 988 | write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags); |
| 989 | |
| 990 | /* wildcards always succeed */ |
| 991 | if (nid == LNET_NID_ANY) |
| 992 | return 0; |
| 993 | |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 994 | return !count ? -ENOENT : 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 995 | } |
| 996 | |
Frank Zago | 439b4d4 | 2016-03-02 17:02:00 -0500 | [diff] [blame] | 997 | static int kiblnd_ctl(lnet_ni_t *ni, unsigned int cmd, void *arg) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 998 | { |
| 999 | struct libcfs_ioctl_data *data = arg; |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 1000 | int rc = -EINVAL; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1001 | |
Greg Donald | a58a38a | 2014-08-21 12:40:35 -0500 | [diff] [blame] | 1002 | switch (cmd) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1003 | case IOC_LIBCFS_GET_PEER: { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 1004 | lnet_nid_t nid = 0; |
| 1005 | int count = 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1006 | |
| 1007 | rc = kiblnd_get_peer_info(ni, data->ioc_count, |
| 1008 | &nid, &count); |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 1009 | data->ioc_nid = nid; |
| 1010 | data->ioc_count = count; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1011 | break; |
| 1012 | } |
| 1013 | |
| 1014 | case IOC_LIBCFS_DEL_PEER: { |
| 1015 | rc = kiblnd_del_peer(ni, data->ioc_nid); |
| 1016 | break; |
| 1017 | } |
| 1018 | case IOC_LIBCFS_GET_CONN: { |
| 1019 | kib_conn_t *conn; |
| 1020 | |
| 1021 | rc = 0; |
| 1022 | conn = kiblnd_get_conn_by_idx(ni, data->ioc_count); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 1023 | if (!conn) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1024 | rc = -ENOENT; |
| 1025 | break; |
| 1026 | } |
| 1027 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 1028 | LASSERT(conn->ibc_cmid); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1029 | data->ioc_nid = conn->ibc_peer->ibp_nid; |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 1030 | if (!conn->ibc_cmid->route.path_rec) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1031 | data->ioc_u32[0] = 0; /* iWarp has no path MTU */ |
| 1032 | else |
| 1033 | data->ioc_u32[0] = |
| 1034 | ib_mtu_enum_to_int(conn->ibc_cmid->route.path_rec->mtu); |
| 1035 | kiblnd_conn_decref(conn); |
| 1036 | break; |
| 1037 | } |
| 1038 | case IOC_LIBCFS_CLOSE_CONNECTION: { |
| 1039 | rc = kiblnd_close_matching_conns(ni, data->ioc_nid); |
| 1040 | break; |
| 1041 | } |
| 1042 | |
| 1043 | default: |
| 1044 | break; |
| 1045 | } |
| 1046 | |
| 1047 | return rc; |
| 1048 | } |
| 1049 | |
Frank Zago | 439b4d4 | 2016-03-02 17:02:00 -0500 | [diff] [blame] | 1050 | static void kiblnd_query(lnet_ni_t *ni, lnet_nid_t nid, unsigned long *when) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1051 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 1052 | unsigned long last_alive = 0; |
| 1053 | unsigned long now = cfs_time_current(); |
| 1054 | rwlock_t *glock = &kiblnd_data.kib_global_lock; |
| 1055 | kib_peer_t *peer; |
| 1056 | unsigned long flags; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1057 | |
| 1058 | read_lock_irqsave(glock, flags); |
| 1059 | |
| 1060 | peer = kiblnd_find_peer_locked(nid); |
Liang Zhen | 4d99b25 | 2016-03-02 18:53:29 -0500 | [diff] [blame] | 1061 | if (peer) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1062 | last_alive = peer->ibp_last_alive; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1063 | |
| 1064 | read_unlock_irqrestore(glock, flags); |
| 1065 | |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 1066 | if (last_alive) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1067 | *when = last_alive; |
| 1068 | |
James Simmons | 4420cfd | 2016-02-12 12:06:00 -0500 | [diff] [blame] | 1069 | /* |
| 1070 | * peer is not persistent in hash, trigger peer creation |
| 1071 | * and connection establishment with a NULL tx |
| 1072 | */ |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 1073 | if (!peer) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1074 | kiblnd_launch_tx(ni, NULL, nid); |
| 1075 | |
| 1076 | CDEBUG(D_NET, "Peer %s %p, alive %ld secs ago\n", |
| 1077 | libcfs_nid2str(nid), peer, |
| 1078 | last_alive ? cfs_duration_sec(now - last_alive) : -1); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1079 | } |
| 1080 | |
Frank Zago | 439b4d4 | 2016-03-02 17:02:00 -0500 | [diff] [blame] | 1081 | static void kiblnd_free_pages(kib_pages_t *p) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1082 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 1083 | int npages = p->ibp_npages; |
| 1084 | int i; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1085 | |
| 1086 | for (i = 0; i < npages; i++) { |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 1087 | if (p->ibp_pages[i]) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1088 | __free_page(p->ibp_pages[i]); |
| 1089 | } |
| 1090 | |
| 1091 | LIBCFS_FREE(p, offsetof(kib_pages_t, ibp_pages[npages])); |
| 1092 | } |
| 1093 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1094 | int kiblnd_alloc_pages(kib_pages_t **pp, int cpt, int npages) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1095 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 1096 | kib_pages_t *p; |
| 1097 | int i; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1098 | |
| 1099 | LIBCFS_CPT_ALLOC(p, lnet_cpt_table(), cpt, |
| 1100 | offsetof(kib_pages_t, ibp_pages[npages])); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 1101 | if (!p) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1102 | CERROR("Can't allocate descriptor for %d pages\n", npages); |
| 1103 | return -ENOMEM; |
| 1104 | } |
| 1105 | |
| 1106 | memset(p, 0, offsetof(kib_pages_t, ibp_pages[npages])); |
| 1107 | p->ibp_npages = npages; |
| 1108 | |
| 1109 | for (i = 0; i < npages; i++) { |
Peng Tao | 49c02a7 | 2013-06-03 21:58:22 +0800 | [diff] [blame] | 1110 | p->ibp_pages[i] = alloc_pages_node( |
| 1111 | cfs_cpt_spread_node(lnet_cpt_table(), cpt), |
Ann Koehler | 0be19af | 2014-04-27 13:06:36 -0400 | [diff] [blame] | 1112 | GFP_NOFS, 0); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 1113 | if (!p->ibp_pages[i]) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1114 | CERROR("Can't allocate page %d of %d\n", i, npages); |
| 1115 | kiblnd_free_pages(p); |
| 1116 | return -ENOMEM; |
| 1117 | } |
| 1118 | } |
| 1119 | |
| 1120 | *pp = p; |
| 1121 | return 0; |
| 1122 | } |
| 1123 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1124 | void kiblnd_unmap_rx_descs(kib_conn_t *conn) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1125 | { |
| 1126 | kib_rx_t *rx; |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 1127 | int i; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1128 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 1129 | LASSERT(conn->ibc_rxs); |
| 1130 | LASSERT(conn->ibc_hdev); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1131 | |
Jeremy Filizetti | 2fb44f2 | 2016-03-02 18:53:24 -0500 | [diff] [blame] | 1132 | for (i = 0; i < IBLND_RX_MSGS(conn); i++) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1133 | rx = &conn->ibc_rxs[i]; |
| 1134 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1135 | LASSERT(rx->rx_nob >= 0); /* not posted */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1136 | |
| 1137 | kiblnd_dma_unmap_single(conn->ibc_hdev->ibh_ibdev, |
| 1138 | KIBLND_UNMAP_ADDR(rx, rx_msgunmap, |
| 1139 | rx->rx_msgaddr), |
| 1140 | IBLND_MSG_SIZE, DMA_FROM_DEVICE); |
| 1141 | } |
| 1142 | |
| 1143 | kiblnd_free_pages(conn->ibc_rx_pages); |
| 1144 | |
| 1145 | conn->ibc_rx_pages = NULL; |
| 1146 | } |
| 1147 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1148 | void kiblnd_map_rx_descs(kib_conn_t *conn) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1149 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 1150 | kib_rx_t *rx; |
| 1151 | struct page *pg; |
| 1152 | int pg_off; |
| 1153 | int ipg; |
| 1154 | int i; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1155 | |
Jeremy Filizetti | 2fb44f2 | 2016-03-02 18:53:24 -0500 | [diff] [blame] | 1156 | for (pg_off = ipg = i = 0; i < IBLND_RX_MSGS(conn); i++) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1157 | pg = conn->ibc_rx_pages->ibp_pages[ipg]; |
| 1158 | rx = &conn->ibc_rxs[i]; |
| 1159 | |
| 1160 | rx->rx_conn = conn; |
| 1161 | rx->rx_msg = (kib_msg_t *)(((char *)page_address(pg)) + pg_off); |
| 1162 | |
| 1163 | rx->rx_msgaddr = kiblnd_dma_map_single(conn->ibc_hdev->ibh_ibdev, |
Guillaume Matheron | 7a3888a | 2015-04-02 19:52:07 +0200 | [diff] [blame] | 1164 | rx->rx_msg, |
| 1165 | IBLND_MSG_SIZE, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1166 | DMA_FROM_DEVICE); |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1167 | LASSERT(!kiblnd_dma_mapping_error(conn->ibc_hdev->ibh_ibdev, |
James Simmons | c314c31 | 2016-02-12 12:06:01 -0500 | [diff] [blame] | 1168 | rx->rx_msgaddr)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1169 | KIBLND_UNMAP_ADDR_SET(rx, rx_msgunmap, rx->rx_msgaddr); |
| 1170 | |
Greg Donald | 1d8cb70 | 2014-08-25 20:07:19 -0500 | [diff] [blame] | 1171 | CDEBUG(D_NET, "rx %d: %p %#llx(%#llx)\n", |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1172 | i, rx->rx_msg, rx->rx_msgaddr, |
John L. Hammond | d664d1f | 2015-06-11 15:18:08 -0400 | [diff] [blame] | 1173 | (__u64)(page_to_phys(pg) + pg_off)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1174 | |
| 1175 | pg_off += IBLND_MSG_SIZE; |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1176 | LASSERT(pg_off <= PAGE_SIZE); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1177 | |
| 1178 | if (pg_off == PAGE_SIZE) { |
| 1179 | pg_off = 0; |
| 1180 | ipg++; |
Jeremy Filizetti | 2fb44f2 | 2016-03-02 18:53:24 -0500 | [diff] [blame] | 1181 | LASSERT(ipg <= IBLND_RX_MSG_PAGES(conn)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1182 | } |
| 1183 | } |
| 1184 | } |
| 1185 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1186 | static void kiblnd_unmap_tx_pool(kib_tx_pool_t *tpo) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1187 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 1188 | kib_hca_dev_t *hdev = tpo->tpo_hdev; |
| 1189 | kib_tx_t *tx; |
| 1190 | int i; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1191 | |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 1192 | LASSERT(!tpo->tpo_pool.po_allocated); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1193 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 1194 | if (!hdev) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1195 | return; |
| 1196 | |
| 1197 | for (i = 0; i < tpo->tpo_pool.po_size; i++) { |
| 1198 | tx = &tpo->tpo_tx_descs[i]; |
| 1199 | kiblnd_dma_unmap_single(hdev->ibh_ibdev, |
| 1200 | KIBLND_UNMAP_ADDR(tx, tx_msgunmap, |
| 1201 | tx->tx_msgaddr), |
| 1202 | IBLND_MSG_SIZE, DMA_TO_DEVICE); |
| 1203 | } |
| 1204 | |
| 1205 | kiblnd_hdev_decref(hdev); |
| 1206 | tpo->tpo_hdev = NULL; |
| 1207 | } |
| 1208 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1209 | static kib_hca_dev_t *kiblnd_current_hdev(kib_dev_t *dev) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1210 | { |
| 1211 | kib_hca_dev_t *hdev; |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 1212 | unsigned long flags; |
| 1213 | int i = 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1214 | |
| 1215 | read_lock_irqsave(&kiblnd_data.kib_global_lock, flags); |
| 1216 | while (dev->ibd_failover) { |
| 1217 | read_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 1218 | if (!(i++ % 50)) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1219 | CDEBUG(D_NET, "%s: Wait for failover\n", |
| 1220 | dev->ibd_ifname); |
Liang Zhen | ea363b4 | 2016-03-02 18:53:30 -0500 | [diff] [blame] | 1221 | set_current_state(TASK_INTERRUPTIBLE); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1222 | schedule_timeout(cfs_time_seconds(1) / 100); |
| 1223 | |
| 1224 | read_lock_irqsave(&kiblnd_data.kib_global_lock, flags); |
| 1225 | } |
| 1226 | |
| 1227 | kiblnd_hdev_addref_locked(dev->ibd_hdev); |
| 1228 | hdev = dev->ibd_hdev; |
| 1229 | |
| 1230 | read_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags); |
| 1231 | |
| 1232 | return hdev; |
| 1233 | } |
| 1234 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1235 | static void kiblnd_map_tx_pool(kib_tx_pool_t *tpo) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1236 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 1237 | kib_pages_t *txpgs = tpo->tpo_tx_pages; |
| 1238 | kib_pool_t *pool = &tpo->tpo_pool; |
| 1239 | kib_net_t *net = pool->po_owner->ps_net; |
| 1240 | kib_dev_t *dev; |
| 1241 | struct page *page; |
| 1242 | kib_tx_t *tx; |
| 1243 | int page_offset; |
| 1244 | int ipage; |
| 1245 | int i; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1246 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 1247 | LASSERT(net); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1248 | |
| 1249 | dev = net->ibn_dev; |
| 1250 | |
| 1251 | /* pre-mapped messages are not bigger than 1 page */ |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1252 | CLASSERT(IBLND_MSG_SIZE <= PAGE_SIZE); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1253 | |
| 1254 | /* No fancy arithmetic when we do the buffer calculations */ |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 1255 | CLASSERT(!(PAGE_SIZE % IBLND_MSG_SIZE)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1256 | |
| 1257 | tpo->tpo_hdev = kiblnd_current_hdev(dev); |
| 1258 | |
| 1259 | for (ipage = page_offset = i = 0; i < pool->po_size; i++) { |
| 1260 | page = txpgs->ibp_pages[ipage]; |
| 1261 | tx = &tpo->tpo_tx_descs[i]; |
| 1262 | |
| 1263 | tx->tx_msg = (kib_msg_t *)(((char *)page_address(page)) + |
| 1264 | page_offset); |
| 1265 | |
| 1266 | tx->tx_msgaddr = kiblnd_dma_map_single( |
| 1267 | tpo->tpo_hdev->ibh_ibdev, tx->tx_msg, |
| 1268 | IBLND_MSG_SIZE, DMA_TO_DEVICE); |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1269 | LASSERT(!kiblnd_dma_mapping_error(tpo->tpo_hdev->ibh_ibdev, |
James Simmons | c314c31 | 2016-02-12 12:06:01 -0500 | [diff] [blame] | 1270 | tx->tx_msgaddr)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1271 | KIBLND_UNMAP_ADDR_SET(tx, tx_msgunmap, tx->tx_msgaddr); |
| 1272 | |
| 1273 | list_add(&tx->tx_list, &pool->po_free_list); |
| 1274 | |
| 1275 | page_offset += IBLND_MSG_SIZE; |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1276 | LASSERT(page_offset <= PAGE_SIZE); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1277 | |
| 1278 | if (page_offset == PAGE_SIZE) { |
| 1279 | page_offset = 0; |
| 1280 | ipage++; |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1281 | LASSERT(ipage <= txpgs->ibp_npages); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1282 | } |
| 1283 | } |
| 1284 | } |
| 1285 | |
Amir Shehata | 32c8deb8 | 2016-05-06 21:30:28 -0400 | [diff] [blame] | 1286 | struct ib_mr *kiblnd_find_rd_dma_mr(struct lnet_ni *ni, kib_rdma_desc_t *rd, |
Jeremy Filizetti | 2fb44f2 | 2016-03-02 18:53:24 -0500 | [diff] [blame] | 1287 | int negotiated_nfrags) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1288 | { |
Amir Shehata | 32c8deb8 | 2016-05-06 21:30:28 -0400 | [diff] [blame] | 1289 | kib_net_t *net = ni->ni_data; |
| 1290 | kib_hca_dev_t *hdev = net->ibn_dev->ibd_hdev; |
| 1291 | struct lnet_ioctl_config_o2iblnd_tunables *tunables; |
| 1292 | __u16 nfrags; |
| 1293 | int mod; |
| 1294 | |
| 1295 | tunables = &ni->ni_lnd_tunables->lt_tun_u.lt_o2ib; |
| 1296 | mod = tunables->lnd_map_on_demand; |
| 1297 | nfrags = (negotiated_nfrags != -1) ? negotiated_nfrags : mod; |
Jeremy Filizetti | 2fb44f2 | 2016-03-02 18:53:24 -0500 | [diff] [blame] | 1298 | |
Amir Shehata | 7cadcc7 | 2016-03-02 17:02:03 -0500 | [diff] [blame] | 1299 | LASSERT(hdev->ibh_mrs); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1300 | |
Amir Shehata | 32c8deb8 | 2016-05-06 21:30:28 -0400 | [diff] [blame] | 1301 | if (mod > 0 && nfrags <= rd->rd_nfrags) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1302 | return NULL; |
| 1303 | |
Amir Shehata | 7cadcc7 | 2016-03-02 17:02:03 -0500 | [diff] [blame] | 1304 | return hdev->ibh_mrs; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1305 | } |
| 1306 | |
Dmitry Eremin | 8daab0a | 2016-05-05 14:53:00 -0400 | [diff] [blame] | 1307 | static void kiblnd_destroy_fmr_pool(kib_fmr_pool_t *fpo) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1308 | { |
Dmitry Eremin | 8daab0a | 2016-05-05 14:53:00 -0400 | [diff] [blame] | 1309 | LASSERT(!fpo->fpo_map_count); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1310 | |
Dmitry Eremin | 80e05b3 | 2016-05-05 14:53:07 -0400 | [diff] [blame] | 1311 | if (fpo->fpo_is_fmr) { |
| 1312 | if (fpo->fmr.fpo_fmr_pool) |
| 1313 | ib_destroy_fmr_pool(fpo->fmr.fpo_fmr_pool); |
| 1314 | } else { |
| 1315 | struct kib_fast_reg_descriptor *frd, *tmp; |
| 1316 | int i = 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1317 | |
Dmitry Eremin | 80e05b3 | 2016-05-05 14:53:07 -0400 | [diff] [blame] | 1318 | list_for_each_entry_safe(frd, tmp, &fpo->fast_reg.fpo_pool_list, |
| 1319 | frd_list) { |
| 1320 | list_del(&frd->frd_list); |
| 1321 | ib_dereg_mr(frd->frd_mr); |
| 1322 | LIBCFS_FREE(frd, sizeof(*frd)); |
| 1323 | i++; |
| 1324 | } |
| 1325 | if (i < fpo->fast_reg.fpo_pool_size) |
| 1326 | CERROR("FastReg pool still has %d regions registered\n", |
| 1327 | fpo->fast_reg.fpo_pool_size - i); |
| 1328 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1329 | |
Dmitry Eremin | 8daab0a | 2016-05-05 14:53:00 -0400 | [diff] [blame] | 1330 | if (fpo->fpo_hdev) |
| 1331 | kiblnd_hdev_decref(fpo->fpo_hdev); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1332 | |
Dmitry Eremin | 8daab0a | 2016-05-05 14:53:00 -0400 | [diff] [blame] | 1333 | LIBCFS_FREE(fpo, sizeof(*fpo)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1334 | } |
| 1335 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1336 | static void kiblnd_destroy_fmr_pool_list(struct list_head *head) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1337 | { |
Dmitry Eremin | 0d33ec5 | 2016-05-05 14:53:01 -0400 | [diff] [blame] | 1338 | kib_fmr_pool_t *fpo, *tmp; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1339 | |
Dmitry Eremin | 0d33ec5 | 2016-05-05 14:53:01 -0400 | [diff] [blame] | 1340 | list_for_each_entry_safe(fpo, tmp, head, fpo_list) { |
Dmitry Eremin | 8daab0a | 2016-05-05 14:53:00 -0400 | [diff] [blame] | 1341 | list_del(&fpo->fpo_list); |
| 1342 | kiblnd_destroy_fmr_pool(fpo); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1343 | } |
| 1344 | } |
| 1345 | |
Amir Shehata | 32c8deb8 | 2016-05-06 21:30:28 -0400 | [diff] [blame] | 1346 | static int |
| 1347 | kiblnd_fmr_pool_size(struct lnet_ioctl_config_o2iblnd_tunables *tunables, |
| 1348 | int ncpts) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1349 | { |
Amir Shehata | 32c8deb8 | 2016-05-06 21:30:28 -0400 | [diff] [blame] | 1350 | int size = tunables->lnd_fmr_pool_size / ncpts; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1351 | |
| 1352 | return max(IBLND_FMR_POOL, size); |
| 1353 | } |
| 1354 | |
Amir Shehata | 32c8deb8 | 2016-05-06 21:30:28 -0400 | [diff] [blame] | 1355 | static int |
| 1356 | kiblnd_fmr_flush_trigger(struct lnet_ioctl_config_o2iblnd_tunables *tunables, |
| 1357 | int ncpts) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1358 | { |
Amir Shehata | 32c8deb8 | 2016-05-06 21:30:28 -0400 | [diff] [blame] | 1359 | int size = tunables->lnd_fmr_flush_trigger / ncpts; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1360 | |
| 1361 | return max(IBLND_FMR_POOL_FLUSH, size); |
| 1362 | } |
| 1363 | |
Dmitry Eremin | f66fb15 | 2016-05-05 14:53:03 -0400 | [diff] [blame] | 1364 | static int kiblnd_alloc_fmr_pool(kib_fmr_poolset_t *fps, kib_fmr_pool_t *fpo) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1365 | { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1366 | struct ib_fmr_pool_param param = { |
James Simmons | 51078e2 | 2016-02-12 12:06:04 -0500 | [diff] [blame] | 1367 | .max_pages_per_fmr = LNET_MAX_PAYLOAD / PAGE_SIZE, |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 1368 | .page_shift = PAGE_SHIFT, |
| 1369 | .access = (IB_ACCESS_LOCAL_WRITE | |
Miguel Bernabeu Diaz | e39f6ef | 2015-08-05 23:44:36 +0200 | [diff] [blame] | 1370 | IB_ACCESS_REMOTE_WRITE), |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 1371 | .pool_size = fps->fps_pool_size, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1372 | .dirty_watermark = fps->fps_flush_trigger, |
| 1373 | .flush_function = NULL, |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 1374 | .flush_arg = NULL, |
Amir Shehata | 32c8deb8 | 2016-05-06 21:30:28 -0400 | [diff] [blame] | 1375 | .cache = !!fps->fps_cache }; |
Dmitry Eremin | f66fb15 | 2016-05-05 14:53:03 -0400 | [diff] [blame] | 1376 | int rc = 0; |
| 1377 | |
| 1378 | fpo->fmr.fpo_fmr_pool = ib_create_fmr_pool(fpo->fpo_hdev->ibh_pd, |
| 1379 | ¶m); |
| 1380 | if (IS_ERR(fpo->fmr.fpo_fmr_pool)) { |
| 1381 | rc = PTR_ERR(fpo->fmr.fpo_fmr_pool); |
| 1382 | if (rc != -ENOSYS) |
| 1383 | CERROR("Failed to create FMR pool: %d\n", rc); |
| 1384 | else |
| 1385 | CERROR("FMRs are not supported\n"); |
| 1386 | } |
| 1387 | |
| 1388 | return rc; |
| 1389 | } |
| 1390 | |
Dmitry Eremin | 80e05b3 | 2016-05-05 14:53:07 -0400 | [diff] [blame] | 1391 | static int kiblnd_alloc_freg_pool(kib_fmr_poolset_t *fps, kib_fmr_pool_t *fpo) |
| 1392 | { |
| 1393 | struct kib_fast_reg_descriptor *frd, *tmp; |
| 1394 | int i, rc; |
| 1395 | |
| 1396 | INIT_LIST_HEAD(&fpo->fast_reg.fpo_pool_list); |
| 1397 | fpo->fast_reg.fpo_pool_size = 0; |
| 1398 | for (i = 0; i < fps->fps_pool_size; i++) { |
| 1399 | LIBCFS_CPT_ALLOC(frd, lnet_cpt_table(), fps->fps_cpt, |
| 1400 | sizeof(*frd)); |
| 1401 | if (!frd) { |
| 1402 | CERROR("Failed to allocate a new fast_reg descriptor\n"); |
| 1403 | rc = -ENOMEM; |
| 1404 | goto out; |
| 1405 | } |
| 1406 | |
| 1407 | frd->frd_mr = ib_alloc_mr(fpo->fpo_hdev->ibh_pd, |
| 1408 | IB_MR_TYPE_MEM_REG, |
| 1409 | LNET_MAX_PAYLOAD / PAGE_SIZE); |
| 1410 | if (IS_ERR(frd->frd_mr)) { |
| 1411 | rc = PTR_ERR(frd->frd_mr); |
| 1412 | CERROR("Failed to allocate ib_alloc_mr: %d\n", rc); |
| 1413 | frd->frd_mr = NULL; |
| 1414 | goto out_middle; |
| 1415 | } |
| 1416 | |
| 1417 | frd->frd_valid = true; |
| 1418 | |
| 1419 | list_add_tail(&frd->frd_list, &fpo->fast_reg.fpo_pool_list); |
| 1420 | fpo->fast_reg.fpo_pool_size++; |
| 1421 | } |
| 1422 | |
| 1423 | return 0; |
| 1424 | |
| 1425 | out_middle: |
| 1426 | if (frd->frd_mr) |
| 1427 | ib_dereg_mr(frd->frd_mr); |
| 1428 | LIBCFS_FREE(frd, sizeof(*frd)); |
| 1429 | |
| 1430 | out: |
| 1431 | list_for_each_entry_safe(frd, tmp, &fpo->fast_reg.fpo_pool_list, |
| 1432 | frd_list) { |
| 1433 | list_del(&frd->frd_list); |
| 1434 | ib_dereg_mr(frd->frd_mr); |
| 1435 | LIBCFS_FREE(frd, sizeof(*frd)); |
| 1436 | } |
| 1437 | |
| 1438 | return rc; |
| 1439 | } |
| 1440 | |
Dmitry Eremin | f66fb15 | 2016-05-05 14:53:03 -0400 | [diff] [blame] | 1441 | static int kiblnd_create_fmr_pool(kib_fmr_poolset_t *fps, |
| 1442 | kib_fmr_pool_t **pp_fpo) |
| 1443 | { |
| 1444 | kib_dev_t *dev = fps->fps_net->ibn_dev; |
Dmitry Eremin | 80e05b3 | 2016-05-05 14:53:07 -0400 | [diff] [blame] | 1445 | struct ib_device_attr *dev_attr; |
Dmitry Eremin | f66fb15 | 2016-05-05 14:53:03 -0400 | [diff] [blame] | 1446 | kib_fmr_pool_t *fpo; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1447 | int rc; |
| 1448 | |
| 1449 | LIBCFS_CPT_ALLOC(fpo, lnet_cpt_table(), fps->fps_cpt, sizeof(*fpo)); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 1450 | if (!fpo) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1451 | return -ENOMEM; |
| 1452 | |
| 1453 | fpo->fpo_hdev = kiblnd_current_hdev(dev); |
Dmitry Eremin | 80e05b3 | 2016-05-05 14:53:07 -0400 | [diff] [blame] | 1454 | dev_attr = &fpo->fpo_hdev->ibh_ibdev->attrs; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1455 | |
Dmitry Eremin | 80e05b3 | 2016-05-05 14:53:07 -0400 | [diff] [blame] | 1456 | /* Check for FMR or FastReg support */ |
| 1457 | fpo->fpo_is_fmr = 0; |
Dmitry Eremin | f66fb15 | 2016-05-05 14:53:03 -0400 | [diff] [blame] | 1458 | if (fpo->fpo_hdev->ibh_ibdev->alloc_fmr && |
| 1459 | fpo->fpo_hdev->ibh_ibdev->dealloc_fmr && |
| 1460 | fpo->fpo_hdev->ibh_ibdev->map_phys_fmr && |
| 1461 | fpo->fpo_hdev->ibh_ibdev->unmap_fmr) { |
| 1462 | LCONSOLE_INFO("Using FMR for registration\n"); |
Dmitry Eremin | 80e05b3 | 2016-05-05 14:53:07 -0400 | [diff] [blame] | 1463 | fpo->fpo_is_fmr = 1; |
| 1464 | } else if (dev_attr->device_cap_flags & IB_DEVICE_MEM_MGT_EXTENSIONS) { |
| 1465 | LCONSOLE_INFO("Using FastReg for registration\n"); |
Dmitry Eremin | f66fb15 | 2016-05-05 14:53:03 -0400 | [diff] [blame] | 1466 | } else { |
| 1467 | rc = -ENOSYS; |
Dmitry Eremin | 80e05b3 | 2016-05-05 14:53:07 -0400 | [diff] [blame] | 1468 | LCONSOLE_ERROR_MSG(rc, "IB device does not support FMRs nor FastRegs, can't register memory\n"); |
Dmitry Eremin | f66fb15 | 2016-05-05 14:53:03 -0400 | [diff] [blame] | 1469 | goto out_fpo; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1470 | } |
| 1471 | |
Dmitry Eremin | 80e05b3 | 2016-05-05 14:53:07 -0400 | [diff] [blame] | 1472 | if (fpo->fpo_is_fmr) |
| 1473 | rc = kiblnd_alloc_fmr_pool(fps, fpo); |
| 1474 | else |
| 1475 | rc = kiblnd_alloc_freg_pool(fps, fpo); |
Dmitry Eremin | f66fb15 | 2016-05-05 14:53:03 -0400 | [diff] [blame] | 1476 | if (rc) |
| 1477 | goto out_fpo; |
| 1478 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1479 | fpo->fpo_deadline = cfs_time_shift(IBLND_POOL_DEADLINE); |
Dmitry Eremin | f66fb15 | 2016-05-05 14:53:03 -0400 | [diff] [blame] | 1480 | fpo->fpo_owner = fps; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1481 | *pp_fpo = fpo; |
| 1482 | |
| 1483 | return 0; |
Dmitry Eremin | f66fb15 | 2016-05-05 14:53:03 -0400 | [diff] [blame] | 1484 | |
| 1485 | out_fpo: |
| 1486 | kiblnd_hdev_decref(fpo->fpo_hdev); |
| 1487 | LIBCFS_FREE(fpo, sizeof(*fpo)); |
| 1488 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1489 | } |
| 1490 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1491 | static void kiblnd_fail_fmr_poolset(kib_fmr_poolset_t *fps, |
| 1492 | struct list_head *zombies) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1493 | { |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 1494 | if (!fps->fps_net) /* intialized? */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1495 | return; |
| 1496 | |
| 1497 | spin_lock(&fps->fps_lock); |
| 1498 | |
| 1499 | while (!list_empty(&fps->fps_pool_list)) { |
| 1500 | kib_fmr_pool_t *fpo = list_entry(fps->fps_pool_list.next, |
| 1501 | kib_fmr_pool_t, fpo_list); |
| 1502 | fpo->fpo_failed = 1; |
| 1503 | list_del(&fpo->fpo_list); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 1504 | if (!fpo->fpo_map_count) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1505 | list_add(&fpo->fpo_list, zombies); |
| 1506 | else |
| 1507 | list_add(&fpo->fpo_list, &fps->fps_failed_pool_list); |
| 1508 | } |
| 1509 | |
| 1510 | spin_unlock(&fps->fps_lock); |
| 1511 | } |
| 1512 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1513 | static void kiblnd_fini_fmr_poolset(kib_fmr_poolset_t *fps) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1514 | { |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 1515 | if (fps->fps_net) { /* initialized? */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1516 | kiblnd_destroy_fmr_pool_list(&fps->fps_failed_pool_list); |
| 1517 | kiblnd_destroy_fmr_pool_list(&fps->fps_pool_list); |
| 1518 | } |
| 1519 | } |
| 1520 | |
Amir Shehata | 32c8deb8 | 2016-05-06 21:30:28 -0400 | [diff] [blame] | 1521 | static int |
| 1522 | kiblnd_init_fmr_poolset(kib_fmr_poolset_t *fps, int cpt, int ncpts, |
| 1523 | kib_net_t *net, |
| 1524 | struct lnet_ioctl_config_o2iblnd_tunables *tunables) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1525 | { |
| 1526 | kib_fmr_pool_t *fpo; |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 1527 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1528 | |
Janani Ravichandran | a4e872f | 2016-02-10 22:47:33 -0500 | [diff] [blame] | 1529 | memset(fps, 0, sizeof(*fps)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1530 | |
| 1531 | fps->fps_net = net; |
| 1532 | fps->fps_cpt = cpt; |
Amir Shehata | 32c8deb8 | 2016-05-06 21:30:28 -0400 | [diff] [blame] | 1533 | |
| 1534 | fps->fps_pool_size = kiblnd_fmr_pool_size(tunables, ncpts); |
| 1535 | fps->fps_flush_trigger = kiblnd_fmr_flush_trigger(tunables, ncpts); |
| 1536 | fps->fps_cache = tunables->lnd_fmr_cache; |
| 1537 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1538 | spin_lock_init(&fps->fps_lock); |
| 1539 | INIT_LIST_HEAD(&fps->fps_pool_list); |
| 1540 | INIT_LIST_HEAD(&fps->fps_failed_pool_list); |
| 1541 | |
| 1542 | rc = kiblnd_create_fmr_pool(fps, &fpo); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 1543 | if (!rc) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1544 | list_add_tail(&fpo->fpo_list, &fps->fps_pool_list); |
| 1545 | |
| 1546 | return rc; |
| 1547 | } |
| 1548 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1549 | static int kiblnd_fmr_pool_is_idle(kib_fmr_pool_t *fpo, unsigned long now) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1550 | { |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 1551 | if (fpo->fpo_map_count) /* still in use */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1552 | return 0; |
| 1553 | if (fpo->fpo_failed) |
| 1554 | return 1; |
| 1555 | return cfs_time_aftereq(now, fpo->fpo_deadline); |
| 1556 | } |
| 1557 | |
Dmitry Eremin | 80e05b3 | 2016-05-05 14:53:07 -0400 | [diff] [blame] | 1558 | static int |
| 1559 | kiblnd_map_tx_pages(kib_tx_t *tx, kib_rdma_desc_t *rd) |
| 1560 | { |
| 1561 | __u64 *pages = tx->tx_pages; |
| 1562 | kib_hca_dev_t *hdev; |
| 1563 | int npages; |
| 1564 | int size; |
| 1565 | int i; |
| 1566 | |
| 1567 | hdev = tx->tx_pool->tpo_hdev; |
| 1568 | |
| 1569 | for (i = 0, npages = 0; i < rd->rd_nfrags; i++) { |
| 1570 | for (size = 0; size < rd->rd_frags[i].rf_nob; |
| 1571 | size += hdev->ibh_page_size) { |
| 1572 | pages[npages++] = (rd->rd_frags[i].rf_addr & |
| 1573 | hdev->ibh_page_mask) + size; |
| 1574 | } |
| 1575 | } |
| 1576 | |
| 1577 | return npages; |
| 1578 | } |
| 1579 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1580 | void kiblnd_fmr_pool_unmap(kib_fmr_t *fmr, int status) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1581 | { |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1582 | LIST_HEAD(zombies); |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 1583 | kib_fmr_pool_t *fpo = fmr->fmr_pool; |
Dmitry Eremin | 1f199a0 | 2016-05-05 14:53:05 -0400 | [diff] [blame] | 1584 | kib_fmr_poolset_t *fps; |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 1585 | unsigned long now = cfs_time_current(); |
| 1586 | kib_fmr_pool_t *tmp; |
| 1587 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1588 | |
Dmitry Eremin | 1f199a0 | 2016-05-05 14:53:05 -0400 | [diff] [blame] | 1589 | if (!fpo) |
| 1590 | return; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1591 | |
Dmitry Eremin | 1f199a0 | 2016-05-05 14:53:05 -0400 | [diff] [blame] | 1592 | fps = fpo->fpo_owner; |
Dmitry Eremin | 80e05b3 | 2016-05-05 14:53:07 -0400 | [diff] [blame] | 1593 | if (fpo->fpo_is_fmr) { |
| 1594 | if (fmr->fmr_pfmr) { |
| 1595 | rc = ib_fmr_pool_unmap(fmr->fmr_pfmr); |
| 1596 | LASSERT(!rc); |
| 1597 | fmr->fmr_pfmr = NULL; |
| 1598 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1599 | |
Dmitry Eremin | 80e05b3 | 2016-05-05 14:53:07 -0400 | [diff] [blame] | 1600 | if (status) { |
| 1601 | rc = ib_flush_fmr_pool(fpo->fmr.fpo_fmr_pool); |
| 1602 | LASSERT(!rc); |
| 1603 | } |
| 1604 | } else { |
| 1605 | struct kib_fast_reg_descriptor *frd = fmr->fmr_frd; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1606 | |
Dmitry Eremin | 80e05b3 | 2016-05-05 14:53:07 -0400 | [diff] [blame] | 1607 | if (frd) { |
| 1608 | frd->frd_valid = false; |
| 1609 | spin_lock(&fps->fps_lock); |
| 1610 | list_add_tail(&frd->frd_list, &fpo->fast_reg.fpo_pool_list); |
| 1611 | spin_unlock(&fps->fps_lock); |
| 1612 | fmr->fmr_frd = NULL; |
| 1613 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1614 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1615 | fmr->fmr_pool = NULL; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1616 | |
| 1617 | spin_lock(&fps->fps_lock); |
Igor Ishchenko | 74732797 | 2015-01-12 18:16:26 +0200 | [diff] [blame] | 1618 | fpo->fpo_map_count--; /* decref the pool */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1619 | |
| 1620 | list_for_each_entry_safe(fpo, tmp, &fps->fps_pool_list, fpo_list) { |
| 1621 | /* the first pool is persistent */ |
| 1622 | if (fps->fps_pool_list.next == &fpo->fpo_list) |
| 1623 | continue; |
| 1624 | |
| 1625 | if (kiblnd_fmr_pool_is_idle(fpo, now)) { |
| 1626 | list_move(&fpo->fpo_list, &zombies); |
Igor Ishchenko | 74732797 | 2015-01-12 18:16:26 +0200 | [diff] [blame] | 1627 | fps->fps_version++; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1628 | } |
| 1629 | } |
| 1630 | spin_unlock(&fps->fps_lock); |
| 1631 | |
| 1632 | if (!list_empty(&zombies)) |
| 1633 | kiblnd_destroy_fmr_pool_list(&zombies); |
| 1634 | } |
| 1635 | |
Dmitry Eremin | 80e05b3 | 2016-05-05 14:53:07 -0400 | [diff] [blame] | 1636 | int kiblnd_fmr_pool_map(kib_fmr_poolset_t *fps, kib_tx_t *tx, |
| 1637 | kib_rdma_desc_t *rd, __u32 nob, __u64 iov, |
| 1638 | kib_fmr_t *fmr) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1639 | { |
Dmitry Eremin | 80e05b3 | 2016-05-05 14:53:07 -0400 | [diff] [blame] | 1640 | __u64 *pages = tx->tx_pages; |
| 1641 | bool is_rx = (rd != tx->tx_rd); |
| 1642 | bool tx_pages_mapped = 0; |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 1643 | kib_fmr_pool_t *fpo; |
Dmitry Eremin | 80e05b3 | 2016-05-05 14:53:07 -0400 | [diff] [blame] | 1644 | int npages = 0; |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 1645 | __u64 version; |
| 1646 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1647 | |
| 1648 | again: |
| 1649 | spin_lock(&fps->fps_lock); |
| 1650 | version = fps->fps_version; |
| 1651 | list_for_each_entry(fpo, &fps->fps_pool_list, fpo_list) { |
| 1652 | fpo->fpo_deadline = cfs_time_shift(IBLND_POOL_DEADLINE); |
| 1653 | fpo->fpo_map_count++; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1654 | |
Dmitry Eremin | 80e05b3 | 2016-05-05 14:53:07 -0400 | [diff] [blame] | 1655 | if (fpo->fpo_is_fmr) { |
| 1656 | struct ib_pool_fmr *pfmr; |
| 1657 | |
| 1658 | spin_unlock(&fps->fps_lock); |
| 1659 | |
| 1660 | if (!tx_pages_mapped) { |
| 1661 | npages = kiblnd_map_tx_pages(tx, rd); |
| 1662 | tx_pages_mapped = 1; |
| 1663 | } |
| 1664 | |
| 1665 | pfmr = ib_fmr_pool_map_phys(fpo->fmr.fpo_fmr_pool, |
| 1666 | pages, npages, iov); |
| 1667 | if (likely(!IS_ERR(pfmr))) { |
| 1668 | fmr->fmr_key = is_rx ? pfmr->fmr->rkey : |
| 1669 | pfmr->fmr->lkey; |
| 1670 | fmr->fmr_frd = NULL; |
| 1671 | fmr->fmr_pfmr = pfmr; |
| 1672 | fmr->fmr_pool = fpo; |
| 1673 | return 0; |
| 1674 | } |
| 1675 | rc = PTR_ERR(pfmr); |
| 1676 | } else { |
| 1677 | if (!list_empty(&fpo->fast_reg.fpo_pool_list)) { |
| 1678 | struct kib_fast_reg_descriptor *frd; |
| 1679 | struct ib_reg_wr *wr; |
| 1680 | struct ib_mr *mr; |
| 1681 | int n; |
| 1682 | |
| 1683 | frd = list_first_entry(&fpo->fast_reg.fpo_pool_list, |
| 1684 | struct kib_fast_reg_descriptor, |
| 1685 | frd_list); |
| 1686 | list_del(&frd->frd_list); |
| 1687 | spin_unlock(&fps->fps_lock); |
| 1688 | |
| 1689 | mr = frd->frd_mr; |
| 1690 | |
| 1691 | if (!frd->frd_valid) { |
| 1692 | __u32 key = is_rx ? mr->rkey : mr->lkey; |
| 1693 | struct ib_send_wr *inv_wr; |
| 1694 | |
| 1695 | inv_wr = &frd->frd_inv_wr; |
| 1696 | memset(inv_wr, 0, sizeof(*inv_wr)); |
| 1697 | inv_wr->opcode = IB_WR_LOCAL_INV; |
| 1698 | inv_wr->wr_id = IBLND_WID_MR; |
| 1699 | inv_wr->ex.invalidate_rkey = key; |
| 1700 | |
| 1701 | /* Bump the key */ |
| 1702 | key = ib_inc_rkey(key); |
| 1703 | ib_update_fast_reg_key(mr, key); |
| 1704 | } |
| 1705 | |
| 1706 | n = ib_map_mr_sg(mr, tx->tx_frags, |
Linus Torvalds | 2f37dd1 | 2016-05-20 22:20:48 -0700 | [diff] [blame] | 1707 | tx->tx_nfrags, NULL, PAGE_SIZE); |
Dmitry Eremin | 80e05b3 | 2016-05-05 14:53:07 -0400 | [diff] [blame] | 1708 | if (unlikely(n != tx->tx_nfrags)) { |
| 1709 | CERROR("Failed to map mr %d/%d elements\n", |
| 1710 | n, tx->tx_nfrags); |
| 1711 | return n < 0 ? n : -EINVAL; |
| 1712 | } |
| 1713 | |
| 1714 | mr->iova = iov; |
| 1715 | |
| 1716 | /* Prepare FastReg WR */ |
| 1717 | wr = &frd->frd_fastreg_wr; |
| 1718 | memset(wr, 0, sizeof(*wr)); |
| 1719 | wr->wr.opcode = IB_WR_REG_MR; |
| 1720 | wr->wr.wr_id = IBLND_WID_MR; |
| 1721 | wr->wr.num_sge = 0; |
| 1722 | wr->wr.send_flags = 0; |
| 1723 | wr->mr = mr; |
| 1724 | wr->key = is_rx ? mr->rkey : mr->lkey; |
| 1725 | wr->access = (IB_ACCESS_LOCAL_WRITE | |
| 1726 | IB_ACCESS_REMOTE_WRITE); |
| 1727 | |
| 1728 | fmr->fmr_key = is_rx ? mr->rkey : mr->lkey; |
| 1729 | fmr->fmr_frd = frd; |
| 1730 | fmr->fmr_pfmr = NULL; |
| 1731 | fmr->fmr_pool = fpo; |
| 1732 | return 0; |
| 1733 | } |
| 1734 | spin_unlock(&fps->fps_lock); |
| 1735 | rc = -EBUSY; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1736 | } |
| 1737 | |
| 1738 | spin_lock(&fps->fps_lock); |
| 1739 | fpo->fpo_map_count--; |
Dmitry Eremin | c1b2e0b | 2016-05-05 14:53:04 -0400 | [diff] [blame] | 1740 | if (rc != -EAGAIN) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1741 | spin_unlock(&fps->fps_lock); |
Dmitry Eremin | c1b2e0b | 2016-05-05 14:53:04 -0400 | [diff] [blame] | 1742 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1743 | } |
| 1744 | |
| 1745 | /* EAGAIN and ... */ |
| 1746 | if (version != fps->fps_version) { |
| 1747 | spin_unlock(&fps->fps_lock); |
| 1748 | goto again; |
| 1749 | } |
| 1750 | } |
| 1751 | |
| 1752 | if (fps->fps_increasing) { |
| 1753 | spin_unlock(&fps->fps_lock); |
James Simmons | c314c31 | 2016-02-12 12:06:01 -0500 | [diff] [blame] | 1754 | CDEBUG(D_NET, "Another thread is allocating new FMR pool, waiting for her to complete\n"); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1755 | schedule(); |
| 1756 | goto again; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1757 | } |
| 1758 | |
Greg Kroah-Hartman | 699503b | 2014-07-12 01:03:41 -0700 | [diff] [blame] | 1759 | if (time_before(cfs_time_current(), fps->fps_next_retry)) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1760 | /* someone failed recently */ |
| 1761 | spin_unlock(&fps->fps_lock); |
| 1762 | return -EAGAIN; |
| 1763 | } |
| 1764 | |
| 1765 | fps->fps_increasing = 1; |
| 1766 | spin_unlock(&fps->fps_lock); |
| 1767 | |
| 1768 | CDEBUG(D_NET, "Allocate new FMR pool\n"); |
| 1769 | rc = kiblnd_create_fmr_pool(fps, &fpo); |
| 1770 | spin_lock(&fps->fps_lock); |
| 1771 | fps->fps_increasing = 0; |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 1772 | if (!rc) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1773 | fps->fps_version++; |
| 1774 | list_add_tail(&fpo->fpo_list, &fps->fps_pool_list); |
| 1775 | } else { |
| 1776 | fps->fps_next_retry = cfs_time_shift(IBLND_POOL_RETRY); |
| 1777 | } |
| 1778 | spin_unlock(&fps->fps_lock); |
| 1779 | |
| 1780 | goto again; |
| 1781 | } |
| 1782 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1783 | static void kiblnd_fini_pool(kib_pool_t *pool) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1784 | { |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1785 | LASSERT(list_empty(&pool->po_free_list)); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 1786 | LASSERT(!pool->po_allocated); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1787 | |
| 1788 | CDEBUG(D_NET, "Finalize %s pool\n", pool->po_owner->ps_name); |
| 1789 | } |
| 1790 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1791 | static void kiblnd_init_pool(kib_poolset_t *ps, kib_pool_t *pool, int size) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1792 | { |
| 1793 | CDEBUG(D_NET, "Initialize %s pool\n", ps->ps_name); |
| 1794 | |
Janani Ravichandran | a4e872f | 2016-02-10 22:47:33 -0500 | [diff] [blame] | 1795 | memset(pool, 0, sizeof(*pool)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1796 | INIT_LIST_HEAD(&pool->po_free_list); |
| 1797 | pool->po_deadline = cfs_time_shift(IBLND_POOL_DEADLINE); |
| 1798 | pool->po_owner = ps; |
| 1799 | pool->po_size = size; |
| 1800 | } |
| 1801 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1802 | static void kiblnd_destroy_pool_list(struct list_head *head) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1803 | { |
| 1804 | kib_pool_t *pool; |
| 1805 | |
| 1806 | while (!list_empty(head)) { |
| 1807 | pool = list_entry(head->next, kib_pool_t, po_list); |
| 1808 | list_del(&pool->po_list); |
| 1809 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 1810 | LASSERT(pool->po_owner); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1811 | pool->po_owner->ps_pool_destroy(pool); |
| 1812 | } |
| 1813 | } |
| 1814 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1815 | static void kiblnd_fail_poolset(kib_poolset_t *ps, struct list_head *zombies) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1816 | { |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 1817 | if (!ps->ps_net) /* intialized? */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1818 | return; |
| 1819 | |
| 1820 | spin_lock(&ps->ps_lock); |
| 1821 | while (!list_empty(&ps->ps_pool_list)) { |
| 1822 | kib_pool_t *po = list_entry(ps->ps_pool_list.next, |
| 1823 | kib_pool_t, po_list); |
| 1824 | po->po_failed = 1; |
| 1825 | list_del(&po->po_list); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 1826 | if (!po->po_allocated) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1827 | list_add(&po->po_list, zombies); |
| 1828 | else |
| 1829 | list_add(&po->po_list, &ps->ps_failed_pool_list); |
| 1830 | } |
| 1831 | spin_unlock(&ps->ps_lock); |
| 1832 | } |
| 1833 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1834 | static void kiblnd_fini_poolset(kib_poolset_t *ps) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1835 | { |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 1836 | if (ps->ps_net) { /* initialized? */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1837 | kiblnd_destroy_pool_list(&ps->ps_failed_pool_list); |
| 1838 | kiblnd_destroy_pool_list(&ps->ps_pool_list); |
| 1839 | } |
| 1840 | } |
| 1841 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1842 | static int kiblnd_init_poolset(kib_poolset_t *ps, int cpt, |
| 1843 | kib_net_t *net, char *name, int size, |
| 1844 | kib_ps_pool_create_t po_create, |
| 1845 | kib_ps_pool_destroy_t po_destroy, |
| 1846 | kib_ps_node_init_t nd_init, |
| 1847 | kib_ps_node_fini_t nd_fini) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1848 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 1849 | kib_pool_t *pool; |
| 1850 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1851 | |
Janani Ravichandran | a4e872f | 2016-02-10 22:47:33 -0500 | [diff] [blame] | 1852 | memset(ps, 0, sizeof(*ps)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1853 | |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 1854 | ps->ps_cpt = cpt; |
| 1855 | ps->ps_net = net; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1856 | ps->ps_pool_create = po_create; |
| 1857 | ps->ps_pool_destroy = po_destroy; |
| 1858 | ps->ps_node_init = nd_init; |
| 1859 | ps->ps_node_fini = nd_fini; |
| 1860 | ps->ps_pool_size = size; |
| 1861 | if (strlcpy(ps->ps_name, name, sizeof(ps->ps_name)) |
| 1862 | >= sizeof(ps->ps_name)) |
| 1863 | return -E2BIG; |
| 1864 | spin_lock_init(&ps->ps_lock); |
| 1865 | INIT_LIST_HEAD(&ps->ps_pool_list); |
| 1866 | INIT_LIST_HEAD(&ps->ps_failed_pool_list); |
| 1867 | |
| 1868 | rc = ps->ps_pool_create(ps, size, &pool); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 1869 | if (!rc) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1870 | list_add(&pool->po_list, &ps->ps_pool_list); |
| 1871 | else |
| 1872 | CERROR("Failed to create the first pool for %s\n", ps->ps_name); |
| 1873 | |
| 1874 | return rc; |
| 1875 | } |
| 1876 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1877 | static int kiblnd_pool_is_idle(kib_pool_t *pool, unsigned long now) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1878 | { |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 1879 | if (pool->po_allocated) /* still in use */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1880 | return 0; |
| 1881 | if (pool->po_failed) |
| 1882 | return 1; |
| 1883 | return cfs_time_aftereq(now, pool->po_deadline); |
| 1884 | } |
| 1885 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1886 | void kiblnd_pool_free_node(kib_pool_t *pool, struct list_head *node) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1887 | { |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1888 | LIST_HEAD(zombies); |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 1889 | kib_poolset_t *ps = pool->po_owner; |
| 1890 | kib_pool_t *tmp; |
| 1891 | unsigned long now = cfs_time_current(); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1892 | |
| 1893 | spin_lock(&ps->ps_lock); |
| 1894 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 1895 | if (ps->ps_node_fini) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1896 | ps->ps_node_fini(pool, node); |
| 1897 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1898 | LASSERT(pool->po_allocated > 0); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1899 | list_add(node, &pool->po_free_list); |
Igor Ishchenko | 74732797 | 2015-01-12 18:16:26 +0200 | [diff] [blame] | 1900 | pool->po_allocated--; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1901 | |
| 1902 | list_for_each_entry_safe(pool, tmp, &ps->ps_pool_list, po_list) { |
| 1903 | /* the first pool is persistent */ |
| 1904 | if (ps->ps_pool_list.next == &pool->po_list) |
| 1905 | continue; |
| 1906 | |
| 1907 | if (kiblnd_pool_is_idle(pool, now)) |
| 1908 | list_move(&pool->po_list, &zombies); |
| 1909 | } |
| 1910 | spin_unlock(&ps->ps_lock); |
| 1911 | |
| 1912 | if (!list_empty(&zombies)) |
| 1913 | kiblnd_destroy_pool_list(&zombies); |
| 1914 | } |
| 1915 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1916 | struct list_head *kiblnd_pool_alloc_node(kib_poolset_t *ps) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1917 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 1918 | struct list_head *node; |
| 1919 | kib_pool_t *pool; |
Liang Zhen | ea363b4 | 2016-03-02 18:53:30 -0500 | [diff] [blame] | 1920 | unsigned int interval = 1; |
| 1921 | unsigned long time_before; |
| 1922 | unsigned int trips = 0; |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 1923 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1924 | |
| 1925 | again: |
| 1926 | spin_lock(&ps->ps_lock); |
| 1927 | list_for_each_entry(pool, &ps->ps_pool_list, po_list) { |
| 1928 | if (list_empty(&pool->po_free_list)) |
| 1929 | continue; |
| 1930 | |
Igor Ishchenko | 74732797 | 2015-01-12 18:16:26 +0200 | [diff] [blame] | 1931 | pool->po_allocated++; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1932 | pool->po_deadline = cfs_time_shift(IBLND_POOL_DEADLINE); |
| 1933 | node = pool->po_free_list.next; |
| 1934 | list_del(node); |
| 1935 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 1936 | if (ps->ps_node_init) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1937 | /* still hold the lock */ |
| 1938 | ps->ps_node_init(pool, node); |
| 1939 | } |
| 1940 | spin_unlock(&ps->ps_lock); |
| 1941 | return node; |
| 1942 | } |
| 1943 | |
| 1944 | /* no available tx pool and ... */ |
| 1945 | if (ps->ps_increasing) { |
| 1946 | /* another thread is allocating a new pool */ |
| 1947 | spin_unlock(&ps->ps_lock); |
Liang Zhen | ea363b4 | 2016-03-02 18:53:30 -0500 | [diff] [blame] | 1948 | trips++; |
| 1949 | CDEBUG(D_NET, "Another thread is allocating new %s pool, waiting %d HZs for her to complete. trips = %d\n", |
| 1950 | ps->ps_name, interval, trips); |
| 1951 | |
| 1952 | set_current_state(TASK_INTERRUPTIBLE); |
| 1953 | schedule_timeout(interval); |
| 1954 | if (interval < cfs_time_seconds(1)) |
| 1955 | interval *= 2; |
| 1956 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1957 | goto again; |
| 1958 | } |
| 1959 | |
Greg Kroah-Hartman | 699503b | 2014-07-12 01:03:41 -0700 | [diff] [blame] | 1960 | if (time_before(cfs_time_current(), ps->ps_next_retry)) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1961 | /* someone failed recently */ |
| 1962 | spin_unlock(&ps->ps_lock); |
| 1963 | return NULL; |
| 1964 | } |
| 1965 | |
| 1966 | ps->ps_increasing = 1; |
| 1967 | spin_unlock(&ps->ps_lock); |
| 1968 | |
| 1969 | CDEBUG(D_NET, "%s pool exhausted, allocate new pool\n", ps->ps_name); |
Liang Zhen | ea363b4 | 2016-03-02 18:53:30 -0500 | [diff] [blame] | 1970 | time_before = cfs_time_current(); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1971 | rc = ps->ps_pool_create(ps, ps->ps_pool_size, &pool); |
Liang Zhen | ea363b4 | 2016-03-02 18:53:30 -0500 | [diff] [blame] | 1972 | CDEBUG(D_NET, "ps_pool_create took %lu HZ to complete", |
| 1973 | cfs_time_current() - time_before); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1974 | |
| 1975 | spin_lock(&ps->ps_lock); |
| 1976 | ps->ps_increasing = 0; |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 1977 | if (!rc) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1978 | list_add_tail(&pool->po_list, &ps->ps_pool_list); |
| 1979 | } else { |
| 1980 | ps->ps_next_retry = cfs_time_shift(IBLND_POOL_RETRY); |
| 1981 | CERROR("Can't allocate new %s pool because out of memory\n", |
| 1982 | ps->ps_name); |
| 1983 | } |
| 1984 | spin_unlock(&ps->ps_lock); |
| 1985 | |
| 1986 | goto again; |
| 1987 | } |
| 1988 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 1989 | static void kiblnd_destroy_tx_pool(kib_pool_t *pool) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1990 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 1991 | kib_tx_pool_t *tpo = container_of(pool, kib_tx_pool_t, tpo_pool); |
| 1992 | int i; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1993 | |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 1994 | LASSERT(!pool->po_allocated); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1995 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 1996 | if (tpo->tpo_tx_pages) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1997 | kiblnd_unmap_tx_pool(tpo); |
| 1998 | kiblnd_free_pages(tpo->tpo_tx_pages); |
| 1999 | } |
| 2000 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2001 | if (!tpo->tpo_tx_descs) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2002 | goto out; |
| 2003 | |
| 2004 | for (i = 0; i < pool->po_size; i++) { |
| 2005 | kib_tx_t *tx = &tpo->tpo_tx_descs[i]; |
| 2006 | |
| 2007 | list_del(&tx->tx_list); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2008 | if (tx->tx_pages) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2009 | LIBCFS_FREE(tx->tx_pages, |
| 2010 | LNET_MAX_IOV * |
| 2011 | sizeof(*tx->tx_pages)); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2012 | if (tx->tx_frags) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2013 | LIBCFS_FREE(tx->tx_frags, |
James Simmons | 147280d | 2016-05-09 10:53:48 -0400 | [diff] [blame^] | 2014 | (1 + IBLND_MAX_RDMA_FRAGS) * |
| 2015 | sizeof(*tx->tx_frags)); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2016 | if (tx->tx_wrq) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2017 | LIBCFS_FREE(tx->tx_wrq, |
| 2018 | (1 + IBLND_MAX_RDMA_FRAGS) * |
| 2019 | sizeof(*tx->tx_wrq)); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2020 | if (tx->tx_sge) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2021 | LIBCFS_FREE(tx->tx_sge, |
| 2022 | (1 + IBLND_MAX_RDMA_FRAGS) * |
| 2023 | sizeof(*tx->tx_sge)); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2024 | if (tx->tx_rd) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2025 | LIBCFS_FREE(tx->tx_rd, |
| 2026 | offsetof(kib_rdma_desc_t, |
| 2027 | rd_frags[IBLND_MAX_RDMA_FRAGS])); |
| 2028 | } |
| 2029 | |
| 2030 | LIBCFS_FREE(tpo->tpo_tx_descs, |
| 2031 | pool->po_size * sizeof(kib_tx_t)); |
| 2032 | out: |
| 2033 | kiblnd_fini_pool(pool); |
Janani Ravichandran | a4e872f | 2016-02-10 22:47:33 -0500 | [diff] [blame] | 2034 | LIBCFS_FREE(tpo, sizeof(*tpo)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2035 | } |
| 2036 | |
| 2037 | static int kiblnd_tx_pool_size(int ncpts) |
| 2038 | { |
| 2039 | int ntx = *kiblnd_tunables.kib_ntx / ncpts; |
| 2040 | |
| 2041 | return max(IBLND_TX_POOL, ntx); |
| 2042 | } |
| 2043 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2044 | static int kiblnd_create_tx_pool(kib_poolset_t *ps, int size, |
| 2045 | kib_pool_t **pp_po) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2046 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 2047 | int i; |
| 2048 | int npg; |
| 2049 | kib_pool_t *pool; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2050 | kib_tx_pool_t *tpo; |
| 2051 | |
| 2052 | LIBCFS_CPT_ALLOC(tpo, lnet_cpt_table(), ps->ps_cpt, sizeof(*tpo)); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2053 | if (!tpo) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2054 | CERROR("Failed to allocate TX pool\n"); |
| 2055 | return -ENOMEM; |
| 2056 | } |
| 2057 | |
| 2058 | pool = &tpo->tpo_pool; |
| 2059 | kiblnd_init_pool(ps, pool, size); |
| 2060 | tpo->tpo_tx_descs = NULL; |
| 2061 | tpo->tpo_tx_pages = NULL; |
| 2062 | |
| 2063 | npg = (size * IBLND_MSG_SIZE + PAGE_SIZE - 1) / PAGE_SIZE; |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2064 | if (kiblnd_alloc_pages(&tpo->tpo_tx_pages, ps->ps_cpt, npg)) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2065 | CERROR("Can't allocate tx pages: %d\n", npg); |
Janani Ravichandran | a4e872f | 2016-02-10 22:47:33 -0500 | [diff] [blame] | 2066 | LIBCFS_FREE(tpo, sizeof(*tpo)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2067 | return -ENOMEM; |
| 2068 | } |
| 2069 | |
| 2070 | LIBCFS_CPT_ALLOC(tpo->tpo_tx_descs, lnet_cpt_table(), ps->ps_cpt, |
| 2071 | size * sizeof(kib_tx_t)); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2072 | if (!tpo->tpo_tx_descs) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2073 | CERROR("Can't allocate %d tx descriptors\n", size); |
| 2074 | ps->ps_pool_destroy(pool); |
| 2075 | return -ENOMEM; |
| 2076 | } |
| 2077 | |
| 2078 | memset(tpo->tpo_tx_descs, 0, size * sizeof(kib_tx_t)); |
| 2079 | |
| 2080 | for (i = 0; i < size; i++) { |
| 2081 | kib_tx_t *tx = &tpo->tpo_tx_descs[i]; |
| 2082 | |
| 2083 | tx->tx_pool = tpo; |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2084 | if (ps->ps_net->ibn_fmr_ps) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2085 | LIBCFS_CPT_ALLOC(tx->tx_pages, |
| 2086 | lnet_cpt_table(), ps->ps_cpt, |
| 2087 | LNET_MAX_IOV * sizeof(*tx->tx_pages)); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2088 | if (!tx->tx_pages) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2089 | break; |
| 2090 | } |
| 2091 | |
| 2092 | LIBCFS_CPT_ALLOC(tx->tx_frags, lnet_cpt_table(), ps->ps_cpt, |
James Simmons | 147280d | 2016-05-09 10:53:48 -0400 | [diff] [blame^] | 2093 | (1 + IBLND_MAX_RDMA_FRAGS) * |
| 2094 | sizeof(*tx->tx_frags)); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2095 | if (!tx->tx_frags) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2096 | break; |
| 2097 | |
James Simmons | 147280d | 2016-05-09 10:53:48 -0400 | [diff] [blame^] | 2098 | sg_init_table(tx->tx_frags, IBLND_MAX_RDMA_FRAGS + 1); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2099 | |
| 2100 | LIBCFS_CPT_ALLOC(tx->tx_wrq, lnet_cpt_table(), ps->ps_cpt, |
| 2101 | (1 + IBLND_MAX_RDMA_FRAGS) * |
| 2102 | sizeof(*tx->tx_wrq)); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2103 | if (!tx->tx_wrq) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2104 | break; |
| 2105 | |
| 2106 | LIBCFS_CPT_ALLOC(tx->tx_sge, lnet_cpt_table(), ps->ps_cpt, |
| 2107 | (1 + IBLND_MAX_RDMA_FRAGS) * |
| 2108 | sizeof(*tx->tx_sge)); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2109 | if (!tx->tx_sge) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2110 | break; |
| 2111 | |
| 2112 | LIBCFS_CPT_ALLOC(tx->tx_rd, lnet_cpt_table(), ps->ps_cpt, |
| 2113 | offsetof(kib_rdma_desc_t, |
| 2114 | rd_frags[IBLND_MAX_RDMA_FRAGS])); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2115 | if (!tx->tx_rd) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2116 | break; |
| 2117 | } |
| 2118 | |
| 2119 | if (i == size) { |
| 2120 | kiblnd_map_tx_pool(tpo); |
| 2121 | *pp_po = pool; |
| 2122 | return 0; |
| 2123 | } |
| 2124 | |
| 2125 | ps->ps_pool_destroy(pool); |
| 2126 | return -ENOMEM; |
| 2127 | } |
| 2128 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2129 | static void kiblnd_tx_init(kib_pool_t *pool, struct list_head *node) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2130 | { |
| 2131 | kib_tx_poolset_t *tps = container_of(pool->po_owner, kib_tx_poolset_t, |
| 2132 | tps_poolset); |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 2133 | kib_tx_t *tx = list_entry(node, kib_tx_t, tx_list); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2134 | |
Igor Ishchenko | 74732797 | 2015-01-12 18:16:26 +0200 | [diff] [blame] | 2135 | tx->tx_cookie = tps->tps_next_tx_cookie++; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2136 | } |
| 2137 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2138 | static void kiblnd_net_fini_pools(kib_net_t *net) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2139 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 2140 | int i; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2141 | |
| 2142 | cfs_cpt_for_each(i, lnet_cpt_table()) { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 2143 | kib_tx_poolset_t *tps; |
| 2144 | kib_fmr_poolset_t *fps; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2145 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2146 | if (net->ibn_tx_ps) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2147 | tps = net->ibn_tx_ps[i]; |
| 2148 | kiblnd_fini_poolset(&tps->tps_poolset); |
| 2149 | } |
| 2150 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2151 | if (net->ibn_fmr_ps) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2152 | fps = net->ibn_fmr_ps[i]; |
| 2153 | kiblnd_fini_fmr_poolset(fps); |
| 2154 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2155 | } |
| 2156 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2157 | if (net->ibn_tx_ps) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2158 | cfs_percpt_free(net->ibn_tx_ps); |
| 2159 | net->ibn_tx_ps = NULL; |
| 2160 | } |
| 2161 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2162 | if (net->ibn_fmr_ps) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2163 | cfs_percpt_free(net->ibn_fmr_ps); |
| 2164 | net->ibn_fmr_ps = NULL; |
| 2165 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2166 | } |
| 2167 | |
Amir Shehata | 32c8deb8 | 2016-05-06 21:30:28 -0400 | [diff] [blame] | 2168 | static int kiblnd_net_init_pools(kib_net_t *net, lnet_ni_t *ni, __u32 *cpts, |
| 2169 | int ncpts) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2170 | { |
Amir Shehata | 32c8deb8 | 2016-05-06 21:30:28 -0400 | [diff] [blame] | 2171 | struct lnet_ioctl_config_o2iblnd_tunables *tunables; |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 2172 | unsigned long flags; |
| 2173 | int cpt; |
Amir Shehata | 32c8deb8 | 2016-05-06 21:30:28 -0400 | [diff] [blame] | 2174 | int rc; |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 2175 | int i; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2176 | |
Amir Shehata | 32c8deb8 | 2016-05-06 21:30:28 -0400 | [diff] [blame] | 2177 | tunables = &ni->ni_lnd_tunables->lt_tun_u.lt_o2ib; |
| 2178 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2179 | read_lock_irqsave(&kiblnd_data.kib_global_lock, flags); |
Amir Shehata | 32c8deb8 | 2016-05-06 21:30:28 -0400 | [diff] [blame] | 2180 | if (!tunables->lnd_map_on_demand) { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 2181 | read_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2182 | goto create_tx_pool; |
| 2183 | } |
| 2184 | |
| 2185 | read_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags); |
| 2186 | |
Amir Shehata | 32c8deb8 | 2016-05-06 21:30:28 -0400 | [diff] [blame] | 2187 | if (tunables->lnd_fmr_pool_size < *kiblnd_tunables.kib_ntx / 4) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2188 | CERROR("Can't set fmr pool size (%d) < ntx / 4(%d)\n", |
Amir Shehata | 32c8deb8 | 2016-05-06 21:30:28 -0400 | [diff] [blame] | 2189 | tunables->lnd_fmr_pool_size, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2190 | *kiblnd_tunables.kib_ntx / 4); |
| 2191 | rc = -EINVAL; |
| 2192 | goto failed; |
| 2193 | } |
| 2194 | |
Oleg Drokin | 415bcb5 | 2015-08-18 21:04:35 -0400 | [diff] [blame] | 2195 | /* |
| 2196 | * TX pool must be created later than FMR, see LU-2268 |
| 2197 | * for details |
| 2198 | */ |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2199 | LASSERT(!net->ibn_tx_ps); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2200 | |
Oleg Drokin | 415bcb5 | 2015-08-18 21:04:35 -0400 | [diff] [blame] | 2201 | /* |
| 2202 | * premapping can fail if ibd_nmr > 1, so we always create |
| 2203 | * FMR pool and map-on-demand if premapping failed |
James Simmons | 7e221b6 | 2016-03-24 11:24:02 -0400 | [diff] [blame] | 2204 | * |
| 2205 | * cfs_precpt_alloc is creating an array of struct kib_fmr_poolset |
| 2206 | * The number of struct kib_fmr_poolsets create is equal to the |
| 2207 | * number of CPTs that exist, i.e net->ibn_fmr_ps[cpt]. |
Oleg Drokin | 415bcb5 | 2015-08-18 21:04:35 -0400 | [diff] [blame] | 2208 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2209 | net->ibn_fmr_ps = cfs_percpt_alloc(lnet_cpt_table(), |
| 2210 | sizeof(kib_fmr_poolset_t)); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2211 | if (!net->ibn_fmr_ps) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2212 | CERROR("Failed to allocate FMR pool array\n"); |
| 2213 | rc = -ENOMEM; |
| 2214 | goto failed; |
| 2215 | } |
| 2216 | |
| 2217 | for (i = 0; i < ncpts; i++) { |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2218 | cpt = !cpts ? i : cpts[i]; |
Amir Shehata | 32c8deb8 | 2016-05-06 21:30:28 -0400 | [diff] [blame] | 2219 | rc = kiblnd_init_fmr_poolset(net->ibn_fmr_ps[cpt], cpt, ncpts, |
| 2220 | net, tunables); |
Amir Shehata | 7cadcc7 | 2016-03-02 17:02:03 -0500 | [diff] [blame] | 2221 | if (rc) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2222 | CERROR("Can't initialize FMR pool for CPT %d: %d\n", |
| 2223 | cpt, rc); |
| 2224 | goto failed; |
| 2225 | } |
| 2226 | } |
| 2227 | |
Amir Shehata | 7cadcc7 | 2016-03-02 17:02:03 -0500 | [diff] [blame] | 2228 | if (i > 0) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2229 | LASSERT(i == ncpts); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2230 | |
| 2231 | create_tx_pool: |
James Simmons | 7e221b6 | 2016-03-24 11:24:02 -0400 | [diff] [blame] | 2232 | /* |
| 2233 | * cfs_precpt_alloc is creating an array of struct kib_tx_poolset |
| 2234 | * The number of struct kib_tx_poolsets create is equal to the |
| 2235 | * number of CPTs that exist, i.e net->ibn_tx_ps[cpt]. |
| 2236 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2237 | net->ibn_tx_ps = cfs_percpt_alloc(lnet_cpt_table(), |
| 2238 | sizeof(kib_tx_poolset_t)); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2239 | if (!net->ibn_tx_ps) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2240 | CERROR("Failed to allocate tx pool array\n"); |
| 2241 | rc = -ENOMEM; |
| 2242 | goto failed; |
| 2243 | } |
| 2244 | |
| 2245 | for (i = 0; i < ncpts; i++) { |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2246 | cpt = !cpts ? i : cpts[i]; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2247 | rc = kiblnd_init_poolset(&net->ibn_tx_ps[cpt]->tps_poolset, |
| 2248 | cpt, net, "TX", |
| 2249 | kiblnd_tx_pool_size(ncpts), |
| 2250 | kiblnd_create_tx_pool, |
| 2251 | kiblnd_destroy_tx_pool, |
| 2252 | kiblnd_tx_init, NULL); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2253 | if (rc) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2254 | CERROR("Can't initialize TX pool for CPT %d: %d\n", |
| 2255 | cpt, rc); |
| 2256 | goto failed; |
| 2257 | } |
| 2258 | } |
| 2259 | |
| 2260 | return 0; |
| 2261 | failed: |
| 2262 | kiblnd_net_fini_pools(net); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2263 | LASSERT(rc); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2264 | return rc; |
| 2265 | } |
| 2266 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2267 | static int kiblnd_hdev_get_attr(kib_hca_dev_t *hdev) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2268 | { |
James Simmons | 4420cfd | 2016-02-12 12:06:00 -0500 | [diff] [blame] | 2269 | /* |
| 2270 | * It's safe to assume a HCA can handle a page size |
| 2271 | * matching that of the native system |
| 2272 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2273 | hdev->ibh_page_shift = PAGE_SHIFT; |
| 2274 | hdev->ibh_page_size = 1 << PAGE_SHIFT; |
| 2275 | hdev->ibh_page_mask = ~((__u64)hdev->ibh_page_size - 1); |
| 2276 | |
Or Gerlitz | cebfe5c | 2015-12-18 10:59:49 +0200 | [diff] [blame] | 2277 | hdev->ibh_mr_size = hdev->ibh_ibdev->attrs.max_mr_size; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2278 | if (hdev->ibh_mr_size == ~0ULL) { |
| 2279 | hdev->ibh_mr_shift = 64; |
| 2280 | return 0; |
| 2281 | } |
| 2282 | |
Greg Kroah-Hartman | 55f5a82 | 2014-07-12 20:26:07 -0700 | [diff] [blame] | 2283 | CERROR("Invalid mr size: %#llx\n", hdev->ibh_mr_size); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2284 | return -EINVAL; |
| 2285 | } |
| 2286 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2287 | static void kiblnd_hdev_cleanup_mrs(kib_hca_dev_t *hdev) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2288 | { |
Amir Shehata | 7cadcc7 | 2016-03-02 17:02:03 -0500 | [diff] [blame] | 2289 | if (!hdev->ibh_mrs) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2290 | return; |
| 2291 | |
Amir Shehata | 7cadcc7 | 2016-03-02 17:02:03 -0500 | [diff] [blame] | 2292 | ib_dereg_mr(hdev->ibh_mrs); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2293 | |
Amir Shehata | 7cadcc7 | 2016-03-02 17:02:03 -0500 | [diff] [blame] | 2294 | hdev->ibh_mrs = NULL; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2295 | } |
| 2296 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2297 | void kiblnd_hdev_destroy(kib_hca_dev_t *hdev) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2298 | { |
| 2299 | kiblnd_hdev_cleanup_mrs(hdev); |
| 2300 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2301 | if (hdev->ibh_pd) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2302 | ib_dealloc_pd(hdev->ibh_pd); |
| 2303 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2304 | if (hdev->ibh_cmid) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2305 | rdma_destroy_id(hdev->ibh_cmid); |
| 2306 | |
| 2307 | LIBCFS_FREE(hdev, sizeof(*hdev)); |
| 2308 | } |
| 2309 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2310 | static int kiblnd_hdev_setup_mrs(kib_hca_dev_t *hdev) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2311 | { |
| 2312 | struct ib_mr *mr; |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 2313 | int rc; |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 2314 | int acflags = IB_ACCESS_LOCAL_WRITE | IB_ACCESS_REMOTE_WRITE; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2315 | |
| 2316 | rc = kiblnd_hdev_get_attr(hdev); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2317 | if (rc) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2318 | return rc; |
| 2319 | |
Luis de Bethencourt | 0173844 | 2015-10-21 18:40:40 +0100 | [diff] [blame] | 2320 | mr = ib_get_dma_mr(hdev->ibh_pd, acflags); |
| 2321 | if (IS_ERR(mr)) { |
| 2322 | CERROR("Failed ib_get_dma_mr : %ld\n", PTR_ERR(mr)); |
| 2323 | kiblnd_hdev_cleanup_mrs(hdev); |
| 2324 | return PTR_ERR(mr); |
| 2325 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2326 | |
Amir Shehata | 7cadcc7 | 2016-03-02 17:02:03 -0500 | [diff] [blame] | 2327 | hdev->ibh_mrs = mr; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2328 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2329 | return 0; |
| 2330 | } |
| 2331 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2332 | /* DUMMY */ |
Guillaume Matheron | 7a3888a | 2015-04-02 19:52:07 +0200 | [diff] [blame] | 2333 | static int kiblnd_dummy_callback(struct rdma_cm_id *cmid, |
| 2334 | struct rdma_cm_event *event) |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2335 | { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2336 | return 0; |
| 2337 | } |
| 2338 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2339 | static int kiblnd_dev_need_failover(kib_dev_t *dev) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2340 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 2341 | struct rdma_cm_id *cmid; |
| 2342 | struct sockaddr_in srcaddr; |
| 2343 | struct sockaddr_in dstaddr; |
| 2344 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2345 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2346 | if (!dev->ibd_hdev || /* initializing */ |
| 2347 | !dev->ibd_hdev->ibh_cmid || /* listener is dead */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2348 | *kiblnd_tunables.kib_dev_failover > 1) /* debugging */ |
| 2349 | return 1; |
| 2350 | |
James Simmons | 4420cfd | 2016-02-12 12:06:00 -0500 | [diff] [blame] | 2351 | /* |
| 2352 | * XXX: it's UGLY, but I don't have better way to find |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2353 | * ib-bonding HCA failover because: |
| 2354 | * |
| 2355 | * a. no reliable CM event for HCA failover... |
| 2356 | * b. no OFED API to get ib_device for current net_device... |
| 2357 | * |
| 2358 | * We have only two choices at this point: |
| 2359 | * |
| 2360 | * a. rdma_bind_addr(), it will conflict with listener cmid |
James Simmons | 4420cfd | 2016-02-12 12:06:00 -0500 | [diff] [blame] | 2361 | * b. rdma_resolve_addr() to zero addr |
| 2362 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2363 | cmid = kiblnd_rdma_create_id(kiblnd_dummy_callback, dev, RDMA_PS_TCP, |
| 2364 | IB_QPT_RC); |
| 2365 | if (IS_ERR(cmid)) { |
| 2366 | rc = PTR_ERR(cmid); |
| 2367 | CERROR("Failed to create cmid for failover: %d\n", rc); |
| 2368 | return rc; |
| 2369 | } |
| 2370 | |
| 2371 | memset(&srcaddr, 0, sizeof(srcaddr)); |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 2372 | srcaddr.sin_family = AF_INET; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2373 | srcaddr.sin_addr.s_addr = (__force u32)htonl(dev->ibd_ifip); |
| 2374 | |
| 2375 | memset(&dstaddr, 0, sizeof(dstaddr)); |
| 2376 | dstaddr.sin_family = AF_INET; |
| 2377 | rc = rdma_resolve_addr(cmid, (struct sockaddr *)&srcaddr, |
| 2378 | (struct sockaddr *)&dstaddr, 1); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2379 | if (rc || !cmid->device) { |
Peng Tao | 5e8f692 | 2013-07-15 22:27:09 +0800 | [diff] [blame] | 2380 | CERROR("Failed to bind %s:%pI4h to device(%p): %d\n", |
| 2381 | dev->ibd_ifname, &dev->ibd_ifip, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2382 | cmid->device, rc); |
| 2383 | rdma_destroy_id(cmid); |
| 2384 | return rc; |
| 2385 | } |
| 2386 | |
Liang Zhen | 199a0cc | 2015-09-14 18:41:33 -0400 | [diff] [blame] | 2387 | rc = dev->ibd_hdev->ibh_ibdev != cmid->device; /* true for failover */ |
| 2388 | rdma_destroy_id(cmid); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2389 | |
Liang Zhen | 199a0cc | 2015-09-14 18:41:33 -0400 | [diff] [blame] | 2390 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2391 | } |
| 2392 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2393 | int kiblnd_dev_failover(kib_dev_t *dev) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2394 | { |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2395 | LIST_HEAD(zombie_tpo); |
| 2396 | LIST_HEAD(zombie_ppo); |
| 2397 | LIST_HEAD(zombie_fpo); |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 2398 | struct rdma_cm_id *cmid = NULL; |
| 2399 | kib_hca_dev_t *hdev = NULL; |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 2400 | struct ib_pd *pd; |
| 2401 | kib_net_t *net; |
| 2402 | struct sockaddr_in addr; |
| 2403 | unsigned long flags; |
| 2404 | int rc = 0; |
| 2405 | int i; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2406 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2407 | LASSERT(*kiblnd_tunables.kib_dev_failover > 1 || |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2408 | dev->ibd_can_failover || !dev->ibd_hdev); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2409 | |
| 2410 | rc = kiblnd_dev_need_failover(dev); |
| 2411 | if (rc <= 0) |
| 2412 | goto out; |
| 2413 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2414 | if (dev->ibd_hdev && |
| 2415 | dev->ibd_hdev->ibh_cmid) { |
James Simmons | 4420cfd | 2016-02-12 12:06:00 -0500 | [diff] [blame] | 2416 | /* |
| 2417 | * XXX it's not good to close old listener at here, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2418 | * because we can fail to create new listener. |
| 2419 | * But we have to close it now, otherwise rdma_bind_addr |
James Simmons | 4420cfd | 2016-02-12 12:06:00 -0500 | [diff] [blame] | 2420 | * will return EADDRINUSE... How crap! |
| 2421 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2422 | write_lock_irqsave(&kiblnd_data.kib_global_lock, flags); |
| 2423 | |
| 2424 | cmid = dev->ibd_hdev->ibh_cmid; |
James Simmons | 4420cfd | 2016-02-12 12:06:00 -0500 | [diff] [blame] | 2425 | /* |
| 2426 | * make next schedule of kiblnd_dev_need_failover() |
| 2427 | * return 1 for me |
| 2428 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2429 | dev->ibd_hdev->ibh_cmid = NULL; |
| 2430 | write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags); |
| 2431 | |
| 2432 | rdma_destroy_id(cmid); |
| 2433 | } |
| 2434 | |
| 2435 | cmid = kiblnd_rdma_create_id(kiblnd_cm_callback, dev, RDMA_PS_TCP, |
| 2436 | IB_QPT_RC); |
| 2437 | if (IS_ERR(cmid)) { |
| 2438 | rc = PTR_ERR(cmid); |
| 2439 | CERROR("Failed to create cmid for failover: %d\n", rc); |
| 2440 | goto out; |
| 2441 | } |
| 2442 | |
| 2443 | memset(&addr, 0, sizeof(addr)); |
| 2444 | addr.sin_family = AF_INET; |
| 2445 | addr.sin_addr.s_addr = (__force u32)htonl(dev->ibd_ifip); |
| 2446 | addr.sin_port = htons(*kiblnd_tunables.kib_service); |
| 2447 | |
| 2448 | /* Bind to failover device or port */ |
| 2449 | rc = rdma_bind_addr(cmid, (struct sockaddr *)&addr); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2450 | if (rc || !cmid->device) { |
Peng Tao | 5e8f692 | 2013-07-15 22:27:09 +0800 | [diff] [blame] | 2451 | CERROR("Failed to bind %s:%pI4h to device(%p): %d\n", |
| 2452 | dev->ibd_ifname, &dev->ibd_ifip, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2453 | cmid->device, rc); |
| 2454 | rdma_destroy_id(cmid); |
| 2455 | goto out; |
| 2456 | } |
| 2457 | |
| 2458 | LIBCFS_ALLOC(hdev, sizeof(*hdev)); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2459 | if (!hdev) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2460 | CERROR("Failed to allocate kib_hca_dev\n"); |
| 2461 | rdma_destroy_id(cmid); |
| 2462 | rc = -ENOMEM; |
| 2463 | goto out; |
| 2464 | } |
| 2465 | |
| 2466 | atomic_set(&hdev->ibh_ref, 1); |
| 2467 | hdev->ibh_dev = dev; |
| 2468 | hdev->ibh_cmid = cmid; |
| 2469 | hdev->ibh_ibdev = cmid->device; |
| 2470 | |
| 2471 | pd = ib_alloc_pd(cmid->device); |
| 2472 | if (IS_ERR(pd)) { |
| 2473 | rc = PTR_ERR(pd); |
| 2474 | CERROR("Can't allocate PD: %d\n", rc); |
| 2475 | goto out; |
| 2476 | } |
| 2477 | |
| 2478 | hdev->ibh_pd = pd; |
| 2479 | |
| 2480 | rc = rdma_listen(cmid, 0); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2481 | if (rc) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2482 | CERROR("Can't start new listener: %d\n", rc); |
| 2483 | goto out; |
| 2484 | } |
| 2485 | |
| 2486 | rc = kiblnd_hdev_setup_mrs(hdev); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2487 | if (rc) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2488 | CERROR("Can't setup device: %d\n", rc); |
| 2489 | goto out; |
| 2490 | } |
| 2491 | |
| 2492 | write_lock_irqsave(&kiblnd_data.kib_global_lock, flags); |
| 2493 | |
Fabian Frederick | 6d37b17 | 2015-06-10 18:32:21 +0200 | [diff] [blame] | 2494 | swap(dev->ibd_hdev, hdev); /* take over the refcount */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2495 | |
| 2496 | list_for_each_entry(net, &dev->ibd_nets, ibn_list) { |
| 2497 | cfs_cpt_for_each(i, lnet_cpt_table()) { |
| 2498 | kiblnd_fail_poolset(&net->ibn_tx_ps[i]->tps_poolset, |
| 2499 | &zombie_tpo); |
| 2500 | |
Oleg Drokin | 415bcb5 | 2015-08-18 21:04:35 -0400 | [diff] [blame] | 2501 | if (net->ibn_fmr_ps) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2502 | kiblnd_fail_fmr_poolset(net->ibn_fmr_ps[i], |
| 2503 | &zombie_fpo); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2504 | } |
| 2505 | } |
| 2506 | |
| 2507 | write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags); |
| 2508 | out: |
| 2509 | if (!list_empty(&zombie_tpo)) |
| 2510 | kiblnd_destroy_pool_list(&zombie_tpo); |
| 2511 | if (!list_empty(&zombie_ppo)) |
| 2512 | kiblnd_destroy_pool_list(&zombie_ppo); |
| 2513 | if (!list_empty(&zombie_fpo)) |
| 2514 | kiblnd_destroy_fmr_pool_list(&zombie_fpo); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2515 | if (hdev) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2516 | kiblnd_hdev_decref(hdev); |
| 2517 | |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2518 | if (rc) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2519 | dev->ibd_failed_failover++; |
| 2520 | else |
| 2521 | dev->ibd_failed_failover = 0; |
| 2522 | |
| 2523 | return rc; |
| 2524 | } |
| 2525 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2526 | void kiblnd_destroy_dev(kib_dev_t *dev) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2527 | { |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2528 | LASSERT(!dev->ibd_nnets); |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2529 | LASSERT(list_empty(&dev->ibd_nets)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2530 | |
| 2531 | list_del(&dev->ibd_fail_list); |
| 2532 | list_del(&dev->ibd_list); |
| 2533 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2534 | if (dev->ibd_hdev) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2535 | kiblnd_hdev_decref(dev->ibd_hdev); |
| 2536 | |
| 2537 | LIBCFS_FREE(dev, sizeof(*dev)); |
| 2538 | } |
| 2539 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2540 | static kib_dev_t *kiblnd_create_dev(char *ifname) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2541 | { |
| 2542 | struct net_device *netdev; |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 2543 | kib_dev_t *dev; |
| 2544 | __u32 netmask; |
| 2545 | __u32 ip; |
| 2546 | int up; |
| 2547 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2548 | |
James Simmons | 1ad6a73 | 2015-06-08 22:27:10 -0400 | [diff] [blame] | 2549 | rc = lnet_ipif_query(ifname, &up, &ip, &netmask); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2550 | if (rc) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2551 | CERROR("Can't query IPoIB interface %s: %d\n", |
| 2552 | ifname, rc); |
| 2553 | return NULL; |
| 2554 | } |
| 2555 | |
| 2556 | if (!up) { |
| 2557 | CERROR("Can't query IPoIB interface %s: it's down\n", ifname); |
| 2558 | return NULL; |
| 2559 | } |
| 2560 | |
| 2561 | LIBCFS_ALLOC(dev, sizeof(*dev)); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2562 | if (!dev) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2563 | return NULL; |
| 2564 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2565 | netdev = dev_get_by_name(&init_net, ifname); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2566 | if (!netdev) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2567 | dev->ibd_can_failover = 0; |
| 2568 | } else { |
| 2569 | dev->ibd_can_failover = !!(netdev->flags & IFF_MASTER); |
| 2570 | dev_put(netdev); |
| 2571 | } |
| 2572 | |
| 2573 | INIT_LIST_HEAD(&dev->ibd_nets); |
| 2574 | INIT_LIST_HEAD(&dev->ibd_list); /* not yet in kib_devs */ |
| 2575 | INIT_LIST_HEAD(&dev->ibd_fail_list); |
| 2576 | dev->ibd_ifip = ip; |
| 2577 | strcpy(&dev->ibd_ifname[0], ifname); |
| 2578 | |
| 2579 | /* initialize the device */ |
| 2580 | rc = kiblnd_dev_failover(dev); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2581 | if (rc) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2582 | CERROR("Can't initialize device: %d\n", rc); |
| 2583 | LIBCFS_FREE(dev, sizeof(*dev)); |
| 2584 | return NULL; |
| 2585 | } |
| 2586 | |
James Simmons | c314c31 | 2016-02-12 12:06:01 -0500 | [diff] [blame] | 2587 | list_add_tail(&dev->ibd_list, &kiblnd_data.kib_devs); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2588 | return dev; |
| 2589 | } |
| 2590 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2591 | static void kiblnd_base_shutdown(void) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2592 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 2593 | struct kib_sched_info *sched; |
| 2594 | int i; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2595 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2596 | LASSERT(list_empty(&kiblnd_data.kib_devs)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2597 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2598 | switch (kiblnd_data.kib_init) { |
| 2599 | default: |
| 2600 | LBUG(); |
| 2601 | |
| 2602 | case IBLND_INIT_ALL: |
| 2603 | case IBLND_INIT_DATA: |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2604 | LASSERT(kiblnd_data.kib_peers); |
Guillaume Matheron | 7a3888a | 2015-04-02 19:52:07 +0200 | [diff] [blame] | 2605 | for (i = 0; i < kiblnd_data.kib_peer_hash_size; i++) |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2606 | LASSERT(list_empty(&kiblnd_data.kib_peers[i])); |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2607 | LASSERT(list_empty(&kiblnd_data.kib_connd_zombies)); |
| 2608 | LASSERT(list_empty(&kiblnd_data.kib_connd_conns)); |
Liang Zhen | 4d99b25 | 2016-03-02 18:53:29 -0500 | [diff] [blame] | 2609 | LASSERT(list_empty(&kiblnd_data.kib_reconn_list)); |
| 2610 | LASSERT(list_empty(&kiblnd_data.kib_reconn_wait)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2611 | |
| 2612 | /* flag threads to terminate; wake and wait for them to die */ |
| 2613 | kiblnd_data.kib_shutdown = 1; |
| 2614 | |
James Simmons | 4420cfd | 2016-02-12 12:06:00 -0500 | [diff] [blame] | 2615 | /* |
| 2616 | * NB: we really want to stop scheduler threads net by net |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2617 | * instead of the whole module, this should be improved |
James Simmons | 4420cfd | 2016-02-12 12:06:00 -0500 | [diff] [blame] | 2618 | * with dynamic configuration LNet |
| 2619 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2620 | cfs_percpt_for_each(sched, i, kiblnd_data.kib_scheds) |
| 2621 | wake_up_all(&sched->ibs_waitq); |
| 2622 | |
| 2623 | wake_up_all(&kiblnd_data.kib_connd_waitq); |
| 2624 | wake_up_all(&kiblnd_data.kib_failover_waitq); |
| 2625 | |
| 2626 | i = 2; |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2627 | while (atomic_read(&kiblnd_data.kib_nthreads)) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2628 | i++; |
Guillaume Matheron | 7a3888a | 2015-04-02 19:52:07 +0200 | [diff] [blame] | 2629 | /* power of 2 ? */ |
| 2630 | CDEBUG(((i & (-i)) == i) ? D_WARNING : D_NET, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2631 | "Waiting for %d threads to terminate\n", |
| 2632 | atomic_read(&kiblnd_data.kib_nthreads)); |
Peng Tao | d3caf4d | 2014-03-18 21:05:56 +0800 | [diff] [blame] | 2633 | set_current_state(TASK_UNINTERRUPTIBLE); |
| 2634 | schedule_timeout(cfs_time_seconds(1)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2635 | } |
| 2636 | |
| 2637 | /* fall through */ |
| 2638 | |
| 2639 | case IBLND_INIT_NOTHING: |
| 2640 | break; |
| 2641 | } |
| 2642 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2643 | if (kiblnd_data.kib_peers) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2644 | LIBCFS_FREE(kiblnd_data.kib_peers, |
| 2645 | sizeof(struct list_head) * |
| 2646 | kiblnd_data.kib_peer_hash_size); |
| 2647 | } |
| 2648 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2649 | if (kiblnd_data.kib_scheds) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2650 | cfs_percpt_free(kiblnd_data.kib_scheds); |
| 2651 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2652 | kiblnd_data.kib_init = IBLND_INIT_NOTHING; |
| 2653 | module_put(THIS_MODULE); |
| 2654 | } |
| 2655 | |
Frank Zago | 439b4d4 | 2016-03-02 17:02:00 -0500 | [diff] [blame] | 2656 | static void kiblnd_shutdown(lnet_ni_t *ni) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2657 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 2658 | kib_net_t *net = ni->ni_data; |
| 2659 | rwlock_t *g_lock = &kiblnd_data.kib_global_lock; |
| 2660 | int i; |
| 2661 | unsigned long flags; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2662 | |
| 2663 | LASSERT(kiblnd_data.kib_init == IBLND_INIT_ALL); |
| 2664 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2665 | if (!net) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2666 | goto out; |
| 2667 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2668 | write_lock_irqsave(g_lock, flags); |
| 2669 | net->ibn_shutdown = 1; |
| 2670 | write_unlock_irqrestore(g_lock, flags); |
| 2671 | |
| 2672 | switch (net->ibn_init) { |
| 2673 | default: |
| 2674 | LBUG(); |
| 2675 | |
| 2676 | case IBLND_INIT_ALL: |
| 2677 | /* nuke all existing peers within this net */ |
| 2678 | kiblnd_del_peer(ni, LNET_NID_ANY); |
| 2679 | |
| 2680 | /* Wait for all peer state to clean up */ |
| 2681 | i = 2; |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2682 | while (atomic_read(&net->ibn_npeers)) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2683 | i++; |
| 2684 | CDEBUG(((i & (-i)) == i) ? D_WARNING : D_NET, /* 2**n? */ |
| 2685 | "%s: waiting for %d peers to disconnect\n", |
| 2686 | libcfs_nid2str(ni->ni_nid), |
| 2687 | atomic_read(&net->ibn_npeers)); |
Peng Tao | d3caf4d | 2014-03-18 21:05:56 +0800 | [diff] [blame] | 2688 | set_current_state(TASK_UNINTERRUPTIBLE); |
| 2689 | schedule_timeout(cfs_time_seconds(1)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2690 | } |
| 2691 | |
| 2692 | kiblnd_net_fini_pools(net); |
| 2693 | |
| 2694 | write_lock_irqsave(g_lock, flags); |
| 2695 | LASSERT(net->ibn_dev->ibd_nnets > 0); |
| 2696 | net->ibn_dev->ibd_nnets--; |
| 2697 | list_del(&net->ibn_list); |
| 2698 | write_unlock_irqrestore(g_lock, flags); |
| 2699 | |
| 2700 | /* fall through */ |
| 2701 | |
| 2702 | case IBLND_INIT_NOTHING: |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2703 | LASSERT(!atomic_read(&net->ibn_nconns)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2704 | |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2705 | if (net->ibn_dev && !net->ibn_dev->ibd_nnets) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2706 | kiblnd_destroy_dev(net->ibn_dev); |
| 2707 | |
| 2708 | break; |
| 2709 | } |
| 2710 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2711 | net->ibn_init = IBLND_INIT_NOTHING; |
| 2712 | ni->ni_data = NULL; |
| 2713 | |
| 2714 | LIBCFS_FREE(net, sizeof(*net)); |
| 2715 | |
| 2716 | out: |
| 2717 | if (list_empty(&kiblnd_data.kib_devs)) |
| 2718 | kiblnd_base_shutdown(); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2719 | } |
| 2720 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2721 | static int kiblnd_base_startup(void) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2722 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 2723 | struct kib_sched_info *sched; |
| 2724 | int rc; |
| 2725 | int i; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2726 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2727 | LASSERT(kiblnd_data.kib_init == IBLND_INIT_NOTHING); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2728 | |
| 2729 | try_module_get(THIS_MODULE); |
Guillaume Matheron | 7a3888a | 2015-04-02 19:52:07 +0200 | [diff] [blame] | 2730 | /* zero pointers, flags etc */ |
| 2731 | memset(&kiblnd_data, 0, sizeof(kiblnd_data)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2732 | |
| 2733 | rwlock_init(&kiblnd_data.kib_global_lock); |
| 2734 | |
| 2735 | INIT_LIST_HEAD(&kiblnd_data.kib_devs); |
| 2736 | INIT_LIST_HEAD(&kiblnd_data.kib_failed_devs); |
| 2737 | |
| 2738 | kiblnd_data.kib_peer_hash_size = IBLND_PEER_HASH_SIZE; |
| 2739 | LIBCFS_ALLOC(kiblnd_data.kib_peers, |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 2740 | sizeof(struct list_head) * kiblnd_data.kib_peer_hash_size); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2741 | if (!kiblnd_data.kib_peers) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2742 | goto failed; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2743 | for (i = 0; i < kiblnd_data.kib_peer_hash_size; i++) |
| 2744 | INIT_LIST_HEAD(&kiblnd_data.kib_peers[i]); |
| 2745 | |
| 2746 | spin_lock_init(&kiblnd_data.kib_connd_lock); |
| 2747 | INIT_LIST_HEAD(&kiblnd_data.kib_connd_conns); |
| 2748 | INIT_LIST_HEAD(&kiblnd_data.kib_connd_zombies); |
Liang Zhen | 4d99b25 | 2016-03-02 18:53:29 -0500 | [diff] [blame] | 2749 | INIT_LIST_HEAD(&kiblnd_data.kib_reconn_list); |
| 2750 | INIT_LIST_HEAD(&kiblnd_data.kib_reconn_wait); |
| 2751 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2752 | init_waitqueue_head(&kiblnd_data.kib_connd_waitq); |
| 2753 | init_waitqueue_head(&kiblnd_data.kib_failover_waitq); |
| 2754 | |
| 2755 | kiblnd_data.kib_scheds = cfs_percpt_alloc(lnet_cpt_table(), |
| 2756 | sizeof(*sched)); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2757 | if (!kiblnd_data.kib_scheds) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2758 | goto failed; |
| 2759 | |
| 2760 | cfs_percpt_for_each(sched, i, kiblnd_data.kib_scheds) { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 2761 | int nthrs; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2762 | |
| 2763 | spin_lock_init(&sched->ibs_lock); |
| 2764 | INIT_LIST_HEAD(&sched->ibs_conns); |
| 2765 | init_waitqueue_head(&sched->ibs_waitq); |
| 2766 | |
| 2767 | nthrs = cfs_cpt_weight(lnet_cpt_table(), i); |
| 2768 | if (*kiblnd_tunables.kib_nscheds > 0) { |
| 2769 | nthrs = min(nthrs, *kiblnd_tunables.kib_nscheds); |
| 2770 | } else { |
James Simmons | 4420cfd | 2016-02-12 12:06:00 -0500 | [diff] [blame] | 2771 | /* |
| 2772 | * max to half of CPUs, another half is reserved for |
| 2773 | * upper layer modules |
| 2774 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2775 | nthrs = min(max(IBLND_N_SCHED, nthrs >> 1), nthrs); |
| 2776 | } |
| 2777 | |
| 2778 | sched->ibs_nthreads_max = nthrs; |
| 2779 | sched->ibs_cpt = i; |
| 2780 | } |
| 2781 | |
| 2782 | kiblnd_data.kib_error_qpa.qp_state = IB_QPS_ERR; |
| 2783 | |
| 2784 | /* lists/ptrs/locks initialised */ |
| 2785 | kiblnd_data.kib_init = IBLND_INIT_DATA; |
| 2786 | /*****************************************************/ |
| 2787 | |
| 2788 | rc = kiblnd_thread_start(kiblnd_connd, NULL, "kiblnd_connd"); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2789 | if (rc) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2790 | CERROR("Can't spawn o2iblnd connd: %d\n", rc); |
| 2791 | goto failed; |
| 2792 | } |
| 2793 | |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2794 | if (*kiblnd_tunables.kib_dev_failover) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2795 | rc = kiblnd_thread_start(kiblnd_failover_thread, NULL, |
| 2796 | "kiblnd_failover"); |
| 2797 | |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2798 | if (rc) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2799 | CERROR("Can't spawn o2iblnd failover thread: %d\n", rc); |
| 2800 | goto failed; |
| 2801 | } |
| 2802 | |
| 2803 | /* flag everything initialised */ |
| 2804 | kiblnd_data.kib_init = IBLND_INIT_ALL; |
| 2805 | /*****************************************************/ |
| 2806 | |
| 2807 | return 0; |
| 2808 | |
| 2809 | failed: |
| 2810 | kiblnd_base_shutdown(); |
| 2811 | return -ENETDOWN; |
| 2812 | } |
| 2813 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2814 | static int kiblnd_start_schedulers(struct kib_sched_info *sched) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2815 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 2816 | int rc = 0; |
| 2817 | int nthrs; |
| 2818 | int i; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2819 | |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2820 | if (!sched->ibs_nthreads) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2821 | if (*kiblnd_tunables.kib_nscheds > 0) { |
| 2822 | nthrs = sched->ibs_nthreads_max; |
| 2823 | } else { |
| 2824 | nthrs = cfs_cpt_weight(lnet_cpt_table(), |
| 2825 | sched->ibs_cpt); |
| 2826 | nthrs = min(max(IBLND_N_SCHED, nthrs >> 1), nthrs); |
| 2827 | nthrs = min(IBLND_N_SCHED_HIGH, nthrs); |
| 2828 | } |
| 2829 | } else { |
| 2830 | LASSERT(sched->ibs_nthreads <= sched->ibs_nthreads_max); |
| 2831 | /* increase one thread if there is new interface */ |
Haneen Mohammed | b6ee382 | 2015-03-13 20:48:53 +0300 | [diff] [blame] | 2832 | nthrs = sched->ibs_nthreads < sched->ibs_nthreads_max; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2833 | } |
| 2834 | |
| 2835 | for (i = 0; i < nthrs; i++) { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 2836 | long id; |
| 2837 | char name[20]; |
Guillaume Matheron | 7a3888a | 2015-04-02 19:52:07 +0200 | [diff] [blame] | 2838 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2839 | id = KIB_THREAD_ID(sched->ibs_cpt, sched->ibs_nthreads + i); |
| 2840 | snprintf(name, sizeof(name), "kiblnd_sd_%02ld_%02ld", |
| 2841 | KIB_THREAD_CPT(id), KIB_THREAD_TID(id)); |
| 2842 | rc = kiblnd_thread_start(kiblnd_scheduler, (void *)id, name); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2843 | if (!rc) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2844 | continue; |
| 2845 | |
| 2846 | CERROR("Can't spawn thread %d for scheduler[%d]: %d\n", |
| 2847 | sched->ibs_cpt, sched->ibs_nthreads + i, rc); |
| 2848 | break; |
| 2849 | } |
| 2850 | |
| 2851 | sched->ibs_nthreads += i; |
| 2852 | return rc; |
| 2853 | } |
| 2854 | |
Guillaume Matheron | 7a3888a | 2015-04-02 19:52:07 +0200 | [diff] [blame] | 2855 | static int kiblnd_dev_start_threads(kib_dev_t *dev, int newdev, __u32 *cpts, |
| 2856 | int ncpts) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2857 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 2858 | int cpt; |
| 2859 | int rc; |
| 2860 | int i; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2861 | |
| 2862 | for (i = 0; i < ncpts; i++) { |
| 2863 | struct kib_sched_info *sched; |
| 2864 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2865 | cpt = !cpts ? i : cpts[i]; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2866 | sched = kiblnd_data.kib_scheds[cpt]; |
| 2867 | |
| 2868 | if (!newdev && sched->ibs_nthreads > 0) |
| 2869 | continue; |
| 2870 | |
| 2871 | rc = kiblnd_start_schedulers(kiblnd_data.kib_scheds[cpt]); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2872 | if (rc) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2873 | CERROR("Failed to start scheduler threads for %s\n", |
| 2874 | dev->ibd_ifname); |
| 2875 | return rc; |
| 2876 | } |
| 2877 | } |
| 2878 | return 0; |
| 2879 | } |
| 2880 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2881 | static kib_dev_t *kiblnd_dev_search(char *ifname) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2882 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 2883 | kib_dev_t *alias = NULL; |
| 2884 | kib_dev_t *dev; |
| 2885 | char *colon; |
| 2886 | char *colon2; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2887 | |
| 2888 | colon = strchr(ifname, ':'); |
| 2889 | list_for_each_entry(dev, &kiblnd_data.kib_devs, ibd_list) { |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2890 | if (!strcmp(&dev->ibd_ifname[0], ifname)) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2891 | return dev; |
| 2892 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2893 | if (alias) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2894 | continue; |
| 2895 | |
| 2896 | colon2 = strchr(dev->ibd_ifname, ':'); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2897 | if (colon) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2898 | *colon = 0; |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2899 | if (colon2) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2900 | *colon2 = 0; |
| 2901 | |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2902 | if (!strcmp(&dev->ibd_ifname[0], ifname)) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2903 | alias = dev; |
| 2904 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2905 | if (colon) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2906 | *colon = ':'; |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2907 | if (colon2) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2908 | *colon2 = ':'; |
| 2909 | } |
| 2910 | return alias; |
| 2911 | } |
| 2912 | |
Frank Zago | 439b4d4 | 2016-03-02 17:02:00 -0500 | [diff] [blame] | 2913 | static int kiblnd_startup(lnet_ni_t *ni) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2914 | { |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 2915 | char *ifname; |
| 2916 | kib_dev_t *ibdev = NULL; |
| 2917 | kib_net_t *net; |
Arnd Bergmann | 473c4e0 | 2015-09-27 16:45:13 -0400 | [diff] [blame] | 2918 | struct timespec64 tv; |
Mike Shuey | ec3d17c | 2015-05-19 10:14:36 -0400 | [diff] [blame] | 2919 | unsigned long flags; |
| 2920 | int rc; |
| 2921 | int newdev; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2922 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2923 | LASSERT(ni->ni_lnd == &the_o2iblnd); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2924 | |
| 2925 | if (kiblnd_data.kib_init == IBLND_INIT_NOTHING) { |
| 2926 | rc = kiblnd_base_startup(); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2927 | if (rc) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2928 | return rc; |
| 2929 | } |
| 2930 | |
| 2931 | LIBCFS_ALLOC(net, sizeof(*net)); |
| 2932 | ni->ni_data = net; |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2933 | if (!net) |
Jiayi Ye | 3247c4e | 2014-10-25 11:40:32 +0800 | [diff] [blame] | 2934 | goto net_failed; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2935 | |
Arnd Bergmann | 473c4e0 | 2015-09-27 16:45:13 -0400 | [diff] [blame] | 2936 | ktime_get_real_ts64(&tv); |
| 2937 | net->ibn_incarnation = tv.tv_sec * USEC_PER_SEC + |
| 2938 | tv.tv_nsec / NSEC_PER_USEC; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2939 | |
Amir Shehata | f6e5006 | 2016-05-06 21:30:27 -0400 | [diff] [blame] | 2940 | rc = kiblnd_tunables_setup(ni); |
Amir Shehata | 025ba82 | 2016-05-06 21:30:26 -0400 | [diff] [blame] | 2941 | if (rc) |
| 2942 | goto net_failed; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2943 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2944 | if (ni->ni_interfaces[0]) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2945 | /* Use the IPoIB interface specified in 'networks=' */ |
| 2946 | |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 2947 | CLASSERT(LNET_MAX_INTERFACES > 1); |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2948 | if (ni->ni_interfaces[1]) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2949 | CERROR("Multiple interfaces not supported\n"); |
| 2950 | goto failed; |
| 2951 | } |
| 2952 | |
| 2953 | ifname = ni->ni_interfaces[0]; |
| 2954 | } else { |
| 2955 | ifname = *kiblnd_tunables.kib_default_ipif; |
| 2956 | } |
| 2957 | |
| 2958 | if (strlen(ifname) >= sizeof(ibdev->ibd_ifname)) { |
| 2959 | CERROR("IPoIB interface name too long: %s\n", ifname); |
| 2960 | goto failed; |
| 2961 | } |
| 2962 | |
| 2963 | ibdev = kiblnd_dev_search(ifname); |
| 2964 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2965 | newdev = !ibdev; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2966 | /* hmm...create kib_dev even for alias */ |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2967 | if (!ibdev || strcmp(&ibdev->ibd_ifname[0], ifname)) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2968 | ibdev = kiblnd_create_dev(ifname); |
| 2969 | |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2970 | if (!ibdev) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2971 | goto failed; |
| 2972 | |
| 2973 | net->ibn_dev = ibdev; |
| 2974 | ni->ni_nid = LNET_MKNID(LNET_NIDNET(ni->ni_nid), ibdev->ibd_ifip); |
| 2975 | |
| 2976 | rc = kiblnd_dev_start_threads(ibdev, newdev, |
| 2977 | ni->ni_cpts, ni->ni_ncpts); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2978 | if (rc) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2979 | goto failed; |
| 2980 | |
Amir Shehata | 32c8deb8 | 2016-05-06 21:30:28 -0400 | [diff] [blame] | 2981 | rc = kiblnd_net_init_pools(net, ni, ni->ni_cpts, ni->ni_ncpts); |
James Simmons | 5fd8833 | 2016-02-12 12:06:09 -0500 | [diff] [blame] | 2982 | if (rc) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2983 | CERROR("Failed to initialize NI pools: %d\n", rc); |
| 2984 | goto failed; |
| 2985 | } |
| 2986 | |
| 2987 | write_lock_irqsave(&kiblnd_data.kib_global_lock, flags); |
| 2988 | ibdev->ibd_nnets++; |
| 2989 | list_add_tail(&net->ibn_list, &ibdev->ibd_nets); |
| 2990 | write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags); |
| 2991 | |
| 2992 | net->ibn_init = IBLND_INIT_ALL; |
| 2993 | |
| 2994 | return 0; |
| 2995 | |
| 2996 | failed: |
James Simmons | 06ace26 | 2016-02-12 12:06:08 -0500 | [diff] [blame] | 2997 | if (!net->ibn_dev && ibdev) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2998 | kiblnd_destroy_dev(ibdev); |
| 2999 | |
Jiayi Ye | 3247c4e | 2014-10-25 11:40:32 +0800 | [diff] [blame] | 3000 | net_failed: |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 3001 | kiblnd_shutdown(ni); |
| 3002 | |
| 3003 | CDEBUG(D_NET, "kiblnd_startup failed\n"); |
| 3004 | return -ENETDOWN; |
| 3005 | } |
| 3006 | |
Frank Zago | 439b4d4 | 2016-03-02 17:02:00 -0500 | [diff] [blame] | 3007 | static lnd_t the_o2iblnd = { |
| 3008 | .lnd_type = O2IBLND, |
| 3009 | .lnd_startup = kiblnd_startup, |
| 3010 | .lnd_shutdown = kiblnd_shutdown, |
| 3011 | .lnd_ctl = kiblnd_ctl, |
| 3012 | .lnd_query = kiblnd_query, |
| 3013 | .lnd_send = kiblnd_send, |
| 3014 | .lnd_recv = kiblnd_recv, |
| 3015 | }; |
| 3016 | |
Andreas Dilger | e0f9411 | 2016-02-26 11:36:05 -0500 | [diff] [blame] | 3017 | static void __exit ko2iblnd_exit(void) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 3018 | { |
| 3019 | lnet_unregister_lnd(&the_o2iblnd); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 3020 | } |
| 3021 | |
Andreas Dilger | e0f9411 | 2016-02-26 11:36:05 -0500 | [diff] [blame] | 3022 | static int __init ko2iblnd_init(void) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 3023 | { |
Guillaume Matheron | febe73b | 2015-04-02 19:35:45 +0200 | [diff] [blame] | 3024 | CLASSERT(sizeof(kib_msg_t) <= IBLND_MSG_SIZE); |
Guillaume Matheron | 7a3888a | 2015-04-02 19:52:07 +0200 | [diff] [blame] | 3025 | CLASSERT(offsetof(kib_msg_t, |
James Simmons | c314c31 | 2016-02-12 12:06:01 -0500 | [diff] [blame] | 3026 | ibm_u.get.ibgm_rd.rd_frags[IBLND_MAX_RDMA_FRAGS]) |
| 3027 | <= IBLND_MSG_SIZE); |
Guillaume Matheron | 7a3888a | 2015-04-02 19:52:07 +0200 | [diff] [blame] | 3028 | CLASSERT(offsetof(kib_msg_t, |
James Simmons | c314c31 | 2016-02-12 12:06:01 -0500 | [diff] [blame] | 3029 | ibm_u.putack.ibpam_rd.rd_frags[IBLND_MAX_RDMA_FRAGS]) |
| 3030 | <= IBLND_MSG_SIZE); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 3031 | |
Amir Shehata | 025ba82 | 2016-05-06 21:30:26 -0400 | [diff] [blame] | 3032 | kiblnd_tunables_init(); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 3033 | |
| 3034 | lnet_register_lnd(&the_o2iblnd); |
| 3035 | |
| 3036 | return 0; |
| 3037 | } |
| 3038 | |
James Simmons | a045547 | 2015-11-04 13:40:02 -0500 | [diff] [blame] | 3039 | MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>"); |
Andreas Dilger | 57878e1 | 2016-02-26 11:36:04 -0500 | [diff] [blame] | 3040 | MODULE_DESCRIPTION("OpenIB gen2 LNet Network Driver"); |
James Simmons | 5b0e50b | 2016-02-26 11:36:03 -0500 | [diff] [blame] | 3041 | MODULE_VERSION("2.7.0"); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 3042 | MODULE_LICENSE("GPL"); |
| 3043 | |
Andreas Dilger | e0f9411 | 2016-02-26 11:36:05 -0500 | [diff] [blame] | 3044 | module_init(ko2iblnd_init); |
| 3045 | module_exit(ko2iblnd_exit); |