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d7e09d03 PT |
1 | /* |
2 | * GPL HEADER START | |
3 | * | |
4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 only, | |
8 | * as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License version 2 for more details (a copy is included | |
14 | * in the LICENSE file that accompanied this code). | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * version 2 along with this program; If not, see | |
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 | * | |
1dc563a6 | 30 | * Copyright (c) 2011, 2015, Intel Corporation. |
d7e09d03 PT |
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.h | |
37 | * | |
38 | * Author: Eric Barton <eric@bartonsoftware.com> | |
39 | */ | |
40 | ||
41 | #include <linux/module.h> | |
42 | #include <linux/kernel.h> | |
43 | #include <linux/mm.h> | |
44 | #include <linux/string.h> | |
45 | #include <linux/stat.h> | |
46 | #include <linux/errno.h> | |
47 | #include <linux/unistd.h> | |
48 | #include <linux/uio.h> | |
e8fd99fd | 49 | #include <linux/uaccess.h> |
d7e09d03 | 50 | |
6255049d | 51 | #include <linux/io.h> |
d7e09d03 | 52 | |
d7e09d03 PT |
53 | #include <linux/fs.h> |
54 | #include <linux/file.h> | |
d7e09d03 PT |
55 | #include <linux/list.h> |
56 | #include <linux/kmod.h> | |
57 | #include <linux/sysctl.h> | |
58 | #include <linux/pci.h> | |
59 | ||
60 | #include <net/sock.h> | |
61 | #include <linux/in.h> | |
62 | ||
18ddb13c JS |
63 | #include <rdma/rdma_cm.h> |
64 | #include <rdma/ib_cm.h> | |
65 | #include <rdma/ib_verbs.h> | |
66 | #include <rdma/ib_fmr_pool.h> | |
67 | ||
d7e09d03 PT |
68 | #define DEBUG_SUBSYSTEM S_LND |
69 | ||
490e7dd4 GKH |
70 | #include "../../../include/linux/libcfs/libcfs.h" |
71 | #include "../../../include/linux/lnet/lnet.h" | |
72 | #include "../../../include/linux/lnet/lib-lnet.h" | |
d7e09d03 | 73 | |
d7e09d03 PT |
74 | #define IBLND_PEER_HASH_SIZE 101 /* # peer lists */ |
75 | /* # scheduler loops before reschedule */ | |
76 | #define IBLND_RESCHED 100 | |
77 | ||
78 | #define IBLND_N_SCHED 2 | |
79 | #define IBLND_N_SCHED_HIGH 4 | |
80 | ||
75c49d40 | 81 | typedef struct { |
d0bed035 JB |
82 | int *kib_dev_failover; /* HCA failover */ |
83 | unsigned int *kib_service; /* IB service number */ | |
84 | int *kib_min_reconnect_interval; /* first failed connection retry... */ | |
85 | int *kib_max_reconnect_interval; /* exponentially increasing to this */ | |
86 | int *kib_cksum; /* checksum kib_msg_t? */ | |
87 | int *kib_timeout; /* comms timeout (seconds) */ | |
88 | int *kib_keepalive; /* keepalive timeout (seconds) */ | |
89 | int *kib_ntx; /* # tx descs */ | |
d0bed035 JB |
90 | char **kib_default_ipif; /* default IPoIB interface */ |
91 | int *kib_retry_count; | |
92 | int *kib_rnr_retry_count; | |
d0bed035 | 93 | int *kib_ib_mtu; /* IB MTU */ |
d0bed035 JB |
94 | int *kib_require_priv_port; /* accept only privileged ports */ |
95 | int *kib_use_priv_port; /* use privileged port for active connect */ | |
96 | int *kib_nscheds; /* # threads on each CPT */ | |
d7e09d03 PT |
97 | } kib_tunables_t; |
98 | ||
99 | extern kib_tunables_t kiblnd_tunables; | |
100 | ||
ec3d17c0 MS |
101 | #define IBLND_MSG_QUEUE_SIZE_V1 8 /* V1 only : # messages/RDMAs in-flight */ |
102 | #define IBLND_CREDIT_HIGHWATER_V1 7 /* V1 only : when eagerly to return credits */ | |
d7e09d03 | 103 | |
ec3d17c0 | 104 | #define IBLND_CREDITS_DEFAULT 8 /* default # of peer credits */ |
e5c2f7b5 | 105 | #define IBLND_CREDITS_MAX ((typeof(((kib_msg_t *) 0)->ibm_credits)) - 1) /* Max # of peer credits */ |
d7e09d03 | 106 | |
32c8deb8 AS |
107 | /* when eagerly to return credits */ |
108 | #define IBLND_CREDITS_HIGHWATER(t, v) ((v) == IBLND_MSG_VERSION_1 ? \ | |
109 | IBLND_CREDIT_HIGHWATER_V1 : \ | |
110 | t->lnd_peercredits_hiw) | |
d7e09d03 | 111 | |
494025c6 | 112 | #define kiblnd_rdma_create_id(cb, dev, ps, qpt) rdma_create_id(current->nsproxy->net_ns, \ |
fa20105e GS |
113 | cb, dev, \ |
114 | ps, qpt) | |
d7e09d03 | 115 | |
d7e09d03 PT |
116 | /* 2 OOB shall suffice for 1 keepalive and 1 returning credits */ |
117 | #define IBLND_OOB_CAPABLE(v) ((v) != IBLND_MSG_VERSION_1) | |
118 | #define IBLND_OOB_MSGS(v) (IBLND_OOB_CAPABLE(v) ? 2 : 0) | |
119 | ||
51078e25 | 120 | #define IBLND_MSG_SIZE (4 << 10) /* max size of queued messages (inc hdr) */ |
d7e09d03 | 121 | #define IBLND_MAX_RDMA_FRAGS LNET_MAX_IOV /* max # of fragments supported */ |
d7e09d03 PT |
122 | |
123 | /************************/ | |
124 | /* derived constants... */ | |
125 | /* Pools (shared by connections on each CPT) */ | |
126 | /* These pools can grow at runtime, so don't need give a very large value */ | |
127 | #define IBLND_TX_POOL 256 | |
d7e09d03 PT |
128 | #define IBLND_FMR_POOL 256 |
129 | #define IBLND_FMR_POOL_FLUSH 192 | |
130 | ||
2fb44f2b JF |
131 | #define IBLND_RX_MSGS(c) \ |
132 | ((c->ibc_queue_depth) * 2 + IBLND_OOB_MSGS(c->ibc_version)) | |
133 | #define IBLND_RX_MSG_BYTES(c) (IBLND_RX_MSGS(c) * IBLND_MSG_SIZE) | |
134 | #define IBLND_RX_MSG_PAGES(c) \ | |
135 | ((IBLND_RX_MSG_BYTES(c) + PAGE_SIZE - 1) / PAGE_SIZE) | |
d7e09d03 PT |
136 | |
137 | /* WRs and CQEs (per connection) */ | |
2fb44f2b JF |
138 | #define IBLND_RECV_WRS(c) IBLND_RX_MSGS(c) |
139 | #define IBLND_SEND_WRS(c) \ | |
9e7d5bf3 AS |
140 | ((c->ibc_max_frags + 1) * kiblnd_concurrent_sends(c->ibc_version, \ |
141 | c->ibc_peer->ibp_ni)) | |
2fb44f2b | 142 | #define IBLND_CQ_ENTRIES(c) (IBLND_RECV_WRS(c) + IBLND_SEND_WRS(c)) |
d7e09d03 PT |
143 | |
144 | struct kib_hca_dev; | |
145 | ||
146 | /* o2iblnd can run over aliased interface */ | |
147 | #ifdef IFALIASZ | |
148 | #define KIB_IFNAME_SIZE IFALIASZ | |
149 | #else | |
150 | #define KIB_IFNAME_SIZE 256 | |
151 | #endif | |
152 | ||
75c49d40 | 153 | typedef struct { |
ec3d17c0 MS |
154 | struct list_head ibd_list; /* chain on kib_devs */ |
155 | struct list_head ibd_fail_list; /* chain on kib_failed_devs */ | |
156 | __u32 ibd_ifip; /* IPoIB interface IP */ | |
157 | ||
158 | /* IPoIB interface name */ | |
159 | char ibd_ifname[KIB_IFNAME_SIZE]; | |
160 | int ibd_nnets; /* # nets extant */ | |
161 | ||
162 | unsigned long ibd_next_failover; | |
163 | int ibd_failed_failover; /* # failover failures */ | |
164 | unsigned int ibd_failover; /* failover in progress */ | |
d0bed035 | 165 | unsigned int ibd_can_failover; /* IPoIB interface is a bonding master */ |
ec3d17c0 MS |
166 | struct list_head ibd_nets; |
167 | struct kib_hca_dev *ibd_hdev; | |
d7e09d03 PT |
168 | } kib_dev_t; |
169 | ||
75c49d40 | 170 | typedef struct kib_hca_dev { |
ec3d17c0 MS |
171 | struct rdma_cm_id *ibh_cmid; /* listener cmid */ |
172 | struct ib_device *ibh_ibdev; /* IB device */ | |
173 | int ibh_page_shift; /* page shift of current HCA */ | |
174 | int ibh_page_size; /* page size of current HCA */ | |
175 | __u64 ibh_page_mask; /* page mask of current HCA */ | |
176 | int ibh_mr_shift; /* bits shift of max MR size */ | |
177 | __u64 ibh_mr_size; /* size of MR */ | |
7cadcc7c | 178 | struct ib_mr *ibh_mrs; /* global MR */ |
ec3d17c0 MS |
179 | struct ib_pd *ibh_pd; /* PD */ |
180 | kib_dev_t *ibh_dev; /* owner */ | |
181 | atomic_t ibh_ref; /* refcount */ | |
d7e09d03 PT |
182 | } kib_hca_dev_t; |
183 | ||
184 | /** # of seconds to keep pool alive */ | |
185 | #define IBLND_POOL_DEADLINE 300 | |
186 | /** # of seconds to retry if allocation failed */ | |
187 | #define IBLND_POOL_RETRY 1 | |
188 | ||
75c49d40 | 189 | typedef struct { |
ec3d17c0 MS |
190 | int ibp_npages; /* # pages */ |
191 | struct page *ibp_pages[0]; /* page array */ | |
d7e09d03 PT |
192 | } kib_pages_t; |
193 | ||
d7e09d03 PT |
194 | struct kib_pool; |
195 | struct kib_poolset; | |
196 | ||
197 | typedef int (*kib_ps_pool_create_t)(struct kib_poolset *ps, | |
198 | int inc, struct kib_pool **pp_po); | |
199 | typedef void (*kib_ps_pool_destroy_t)(struct kib_pool *po); | |
200 | typedef void (*kib_ps_node_init_t)(struct kib_pool *po, struct list_head *node); | |
201 | typedef void (*kib_ps_node_fini_t)(struct kib_pool *po, struct list_head *node); | |
202 | ||
203 | struct kib_net; | |
204 | ||
205 | #define IBLND_POOL_NAME_LEN 32 | |
206 | ||
75c49d40 | 207 | typedef struct kib_poolset { |
ec3d17c0 MS |
208 | spinlock_t ps_lock; /* serialize */ |
209 | struct kib_net *ps_net; /* network it belongs to */ | |
210 | char ps_name[IBLND_POOL_NAME_LEN]; /* pool set name */ | |
211 | struct list_head ps_pool_list; /* list of pools */ | |
212 | struct list_head ps_failed_pool_list;/* failed pool list */ | |
d0bed035 JB |
213 | unsigned long ps_next_retry; /* time stamp for retry if */ |
214 | /* failed to allocate */ | |
ec3d17c0 MS |
215 | int ps_increasing; /* is allocating new pool */ |
216 | int ps_pool_size; /* new pool size */ | |
217 | int ps_cpt; /* CPT id */ | |
218 | ||
219 | kib_ps_pool_create_t ps_pool_create; /* create a new pool */ | |
220 | kib_ps_pool_destroy_t ps_pool_destroy; /* destroy a pool */ | |
d0bed035 | 221 | kib_ps_node_init_t ps_node_init; /* initialize new allocated node */ |
ec3d17c0 | 222 | kib_ps_node_fini_t ps_node_fini; /* finalize node */ |
d7e09d03 PT |
223 | } kib_poolset_t; |
224 | ||
75c49d40 | 225 | typedef struct kib_pool { |
d0bed035 JB |
226 | struct list_head po_list; /* chain on pool list */ |
227 | struct list_head po_free_list; /* pre-allocated node */ | |
228 | kib_poolset_t *po_owner; /* pool_set of this pool */ | |
229 | unsigned long po_deadline; /* deadline of this pool */ | |
230 | int po_allocated; /* # of elements in use */ | |
231 | int po_failed; /* pool is created on failed HCA */ | |
232 | int po_size; /* # of pre-allocated elements */ | |
d7e09d03 PT |
233 | } kib_pool_t; |
234 | ||
235 | typedef struct { | |
ec3d17c0 MS |
236 | kib_poolset_t tps_poolset; /* pool-set */ |
237 | __u64 tps_next_tx_cookie; /* cookie of TX */ | |
d7e09d03 PT |
238 | } kib_tx_poolset_t; |
239 | ||
240 | typedef struct { | |
ec3d17c0 MS |
241 | kib_pool_t tpo_pool; /* pool */ |
242 | struct kib_hca_dev *tpo_hdev; /* device for this pool */ | |
243 | struct kib_tx *tpo_tx_descs; /* all the tx descriptors */ | |
244 | kib_pages_t *tpo_tx_pages; /* premapped tx msg pages */ | |
d7e09d03 PT |
245 | } kib_tx_pool_t; |
246 | ||
75c49d40 | 247 | typedef struct { |
ec3d17c0 MS |
248 | spinlock_t fps_lock; /* serialize */ |
249 | struct kib_net *fps_net; /* IB network */ | |
250 | struct list_head fps_pool_list; /* FMR pool list */ | |
251 | struct list_head fps_failed_pool_list;/* FMR pool list */ | |
252 | __u64 fps_version; /* validity stamp */ | |
253 | int fps_cpt; /* CPT id */ | |
254 | int fps_pool_size; | |
255 | int fps_flush_trigger; | |
32c8deb8 | 256 | int fps_cache; |
ec3d17c0 | 257 | int fps_increasing; /* is allocating new pool */ |
d0bed035 JB |
258 | unsigned long fps_next_retry; /* time stamp for retry if*/ |
259 | /* failed to allocate */ | |
d7e09d03 PT |
260 | } kib_fmr_poolset_t; |
261 | ||
80e05b34 DE |
262 | struct kib_fast_reg_descriptor { /* For fast registration */ |
263 | struct list_head frd_list; | |
264 | struct ib_send_wr frd_inv_wr; | |
265 | struct ib_reg_wr frd_fastreg_wr; | |
266 | struct ib_mr *frd_mr; | |
267 | bool frd_valid; | |
268 | }; | |
269 | ||
75c49d40 | 270 | typedef struct { |
ec3d17c0 MS |
271 | struct list_head fpo_list; /* chain on pool list */ |
272 | struct kib_hca_dev *fpo_hdev; /* device for this pool */ | |
273 | kib_fmr_poolset_t *fpo_owner; /* owner of this pool */ | |
87f4f6f5 DE |
274 | union { |
275 | struct { | |
276 | struct ib_fmr_pool *fpo_fmr_pool; /* IB FMR pool */ | |
277 | } fmr; | |
80e05b34 DE |
278 | struct { /* For fast registration */ |
279 | struct list_head fpo_pool_list; | |
280 | int fpo_pool_size; | |
281 | } fast_reg; | |
87f4f6f5 | 282 | }; |
ec3d17c0 MS |
283 | unsigned long fpo_deadline; /* deadline of this pool */ |
284 | int fpo_failed; /* fmr pool is failed */ | |
285 | int fpo_map_count; /* # of mapped FMR */ | |
80e05b34 | 286 | int fpo_is_fmr; |
d7e09d03 PT |
287 | } kib_fmr_pool_t; |
288 | ||
289 | typedef struct { | |
80e05b34 DE |
290 | kib_fmr_pool_t *fmr_pool; /* pool of FMR */ |
291 | struct ib_pool_fmr *fmr_pfmr; /* IB pool fmr */ | |
292 | struct kib_fast_reg_descriptor *fmr_frd; | |
293 | u32 fmr_key; | |
d7e09d03 PT |
294 | } kib_fmr_t; |
295 | ||
75c49d40 | 296 | typedef struct kib_net { |
ec3d17c0 MS |
297 | struct list_head ibn_list; /* chain on kib_dev_t::ibd_nets */ |
298 | __u64 ibn_incarnation;/* my epoch */ | |
299 | int ibn_init; /* initialisation state */ | |
300 | int ibn_shutdown; /* shutting down? */ | |
d7e09d03 | 301 | |
ec3d17c0 MS |
302 | atomic_t ibn_npeers; /* # peers extant */ |
303 | atomic_t ibn_nconns; /* # connections extant */ | |
d7e09d03 | 304 | |
ec3d17c0 MS |
305 | kib_tx_poolset_t **ibn_tx_ps; /* tx pool-set */ |
306 | kib_fmr_poolset_t **ibn_fmr_ps; /* fmr pool-set */ | |
d7e09d03 | 307 | |
ec3d17c0 | 308 | kib_dev_t *ibn_dev; /* underlying IB device */ |
d7e09d03 PT |
309 | } kib_net_t; |
310 | ||
311 | #define KIB_THREAD_SHIFT 16 | |
312 | #define KIB_THREAD_ID(cpt, tid) ((cpt) << KIB_THREAD_SHIFT | (tid)) | |
313 | #define KIB_THREAD_CPT(id) ((id) >> KIB_THREAD_SHIFT) | |
314 | #define KIB_THREAD_TID(id) ((id) & ((1UL << KIB_THREAD_SHIFT) - 1)) | |
315 | ||
316 | struct kib_sched_info { | |
ec3d17c0 MS |
317 | spinlock_t ibs_lock; /* serialise */ |
318 | wait_queue_head_t ibs_waitq; /* schedulers sleep here */ | |
319 | struct list_head ibs_conns; /* conns to check for rx completions */ | |
320 | int ibs_nthreads; /* number of scheduler threads */ | |
321 | int ibs_nthreads_max; /* max allowed scheduler threads */ | |
322 | int ibs_cpt; /* CPT id */ | |
d7e09d03 PT |
323 | }; |
324 | ||
75c49d40 | 325 | typedef struct { |
d0bed035 JB |
326 | int kib_init; /* initialisation state */ |
327 | int kib_shutdown; /* shut down? */ | |
328 | struct list_head kib_devs; /* IB devices extant */ | |
329 | struct list_head kib_failed_devs; /* list head of failed devices */ | |
330 | wait_queue_head_t kib_failover_waitq; /* schedulers sleep here */ | |
331 | atomic_t kib_nthreads; /* # live threads */ | |
332 | rwlock_t kib_global_lock; /* stabilize net/dev/peer/conn ops */ | |
333 | struct list_head *kib_peers; /* hash table of all my known peers */ | |
334 | int kib_peer_hash_size; /* size of kib_peers */ | |
335 | void *kib_connd; /* the connd task (serialisation assertions) */ | |
336 | struct list_head kib_connd_conns; /* connections to setup/teardown */ | |
337 | struct list_head kib_connd_zombies; /* connections with zero refcount */ | |
4d99b258 LZ |
338 | /* connections to reconnect */ |
339 | struct list_head kib_reconn_list; | |
340 | /* peers wait for reconnection */ | |
341 | struct list_head kib_reconn_wait; | |
342 | /** | |
343 | * The second that peers are pulled out from \a kib_reconn_wait | |
344 | * for reconnection. | |
345 | */ | |
346 | time64_t kib_reconn_sec; | |
347 | ||
d0bed035 JB |
348 | wait_queue_head_t kib_connd_waitq; /* connection daemon sleeps here */ |
349 | spinlock_t kib_connd_lock; /* serialise */ | |
350 | struct ib_qp_attr kib_error_qpa; /* QP->ERROR */ | |
351 | struct kib_sched_info **kib_scheds; /* percpt data for schedulers */ | |
d7e09d03 PT |
352 | } kib_data_t; |
353 | ||
ec3d17c0 MS |
354 | #define IBLND_INIT_NOTHING 0 |
355 | #define IBLND_INIT_DATA 1 | |
356 | #define IBLND_INIT_ALL 2 | |
d7e09d03 PT |
357 | |
358 | /************************************************************************ | |
359 | * IB Wire message format. | |
360 | * These are sent in sender's byte order (i.e. receiver flips). | |
361 | */ | |
362 | ||
75c49d40 | 363 | typedef struct kib_connparams { |
ec3d17c0 MS |
364 | __u16 ibcp_queue_depth; |
365 | __u16 ibcp_max_frags; | |
366 | __u32 ibcp_max_msg_size; | |
d7e09d03 PT |
367 | } WIRE_ATTR kib_connparams_t; |
368 | ||
75c49d40 | 369 | typedef struct { |
ec3d17c0 MS |
370 | lnet_hdr_t ibim_hdr; /* portals header */ |
371 | char ibim_payload[0]; /* piggy-backed payload */ | |
d7e09d03 PT |
372 | } WIRE_ATTR kib_immediate_msg_t; |
373 | ||
75c49d40 | 374 | typedef struct { |
ec3d17c0 MS |
375 | __u32 rf_nob; /* # bytes this frag */ |
376 | __u64 rf_addr; /* CAVEAT EMPTOR: misaligned!! */ | |
d7e09d03 PT |
377 | } WIRE_ATTR kib_rdma_frag_t; |
378 | ||
75c49d40 | 379 | typedef struct { |
ec3d17c0 MS |
380 | __u32 rd_key; /* local/remote key */ |
381 | __u32 rd_nfrags; /* # fragments */ | |
382 | kib_rdma_frag_t rd_frags[0]; /* buffer frags */ | |
d7e09d03 PT |
383 | } WIRE_ATTR kib_rdma_desc_t; |
384 | ||
75c49d40 | 385 | typedef struct { |
ec3d17c0 MS |
386 | lnet_hdr_t ibprm_hdr; /* portals header */ |
387 | __u64 ibprm_cookie; /* opaque completion cookie */ | |
d7e09d03 PT |
388 | } WIRE_ATTR kib_putreq_msg_t; |
389 | ||
75c49d40 | 390 | typedef struct { |
ec3d17c0 MS |
391 | __u64 ibpam_src_cookie; /* reflected completion cookie */ |
392 | __u64 ibpam_dst_cookie; /* opaque completion cookie */ | |
393 | kib_rdma_desc_t ibpam_rd; /* sender's sink buffer */ | |
d7e09d03 PT |
394 | } WIRE_ATTR kib_putack_msg_t; |
395 | ||
75c49d40 | 396 | typedef struct { |
ec3d17c0 MS |
397 | lnet_hdr_t ibgm_hdr; /* portals header */ |
398 | __u64 ibgm_cookie; /* opaque completion cookie */ | |
399 | kib_rdma_desc_t ibgm_rd; /* rdma descriptor */ | |
d7e09d03 PT |
400 | } WIRE_ATTR kib_get_msg_t; |
401 | ||
75c49d40 | 402 | typedef struct { |
ec3d17c0 MS |
403 | __u64 ibcm_cookie; /* opaque completion cookie */ |
404 | __s32 ibcm_status; /* < 0 failure: >= 0 length */ | |
d7e09d03 PT |
405 | } WIRE_ATTR kib_completion_msg_t; |
406 | ||
75c49d40 | 407 | typedef struct { |
d7e09d03 | 408 | /* First 2 fields fixed FOR ALL TIME */ |
ec3d17c0 MS |
409 | __u32 ibm_magic; /* I'm an ibnal message */ |
410 | __u16 ibm_version; /* this is my version number */ | |
411 | ||
412 | __u8 ibm_type; /* msg type */ | |
413 | __u8 ibm_credits; /* returned credits */ | |
414 | __u32 ibm_nob; /* # bytes in whole message */ | |
415 | __u32 ibm_cksum; /* checksum (0 == no checksum) */ | |
416 | __u64 ibm_srcnid; /* sender's NID */ | |
417 | __u64 ibm_srcstamp; /* sender's incarnation */ | |
418 | __u64 ibm_dstnid; /* destination's NID */ | |
419 | __u64 ibm_dststamp; /* destination's incarnation */ | |
d7e09d03 PT |
420 | |
421 | union { | |
ec3d17c0 MS |
422 | kib_connparams_t connparams; |
423 | kib_immediate_msg_t immediate; | |
424 | kib_putreq_msg_t putreq; | |
425 | kib_putack_msg_t putack; | |
426 | kib_get_msg_t get; | |
427 | kib_completion_msg_t completion; | |
d7e09d03 PT |
428 | } WIRE_ATTR ibm_u; |
429 | } WIRE_ATTR kib_msg_t; | |
430 | ||
ec3d17c0 | 431 | #define IBLND_MSG_MAGIC LNET_PROTO_IB_MAGIC /* unique magic */ |
d7e09d03 | 432 | |
ec3d17c0 MS |
433 | #define IBLND_MSG_VERSION_1 0x11 |
434 | #define IBLND_MSG_VERSION_2 0x12 | |
435 | #define IBLND_MSG_VERSION IBLND_MSG_VERSION_2 | |
d7e09d03 | 436 | |
ec3d17c0 MS |
437 | #define IBLND_MSG_CONNREQ 0xc0 /* connection request */ |
438 | #define IBLND_MSG_CONNACK 0xc1 /* connection acknowledge */ | |
439 | #define IBLND_MSG_NOOP 0xd0 /* nothing (just credits) */ | |
440 | #define IBLND_MSG_IMMEDIATE 0xd1 /* immediate */ | |
441 | #define IBLND_MSG_PUT_REQ 0xd2 /* putreq (src->sink) */ | |
442 | #define IBLND_MSG_PUT_NAK 0xd3 /* completion (sink->src) */ | |
443 | #define IBLND_MSG_PUT_ACK 0xd4 /* putack (sink->src) */ | |
444 | #define IBLND_MSG_PUT_DONE 0xd5 /* completion (src->sink) */ | |
445 | #define IBLND_MSG_GET_REQ 0xd6 /* getreq (sink->src) */ | |
446 | #define IBLND_MSG_GET_DONE 0xd7 /* completion (src->sink: all OK) */ | |
d7e09d03 PT |
447 | |
448 | typedef struct { | |
ec3d17c0 MS |
449 | __u32 ibr_magic; /* sender's magic */ |
450 | __u16 ibr_version; /* sender's version */ | |
451 | __u8 ibr_why; /* reject reason */ | |
452 | __u8 ibr_padding; /* padding */ | |
453 | __u64 ibr_incarnation; /* incarnation of peer */ | |
454 | kib_connparams_t ibr_cp; /* connection parameters */ | |
d7e09d03 PT |
455 | } WIRE_ATTR kib_rej_t; |
456 | ||
457 | /* connection rejection reasons */ | |
ec3d17c0 MS |
458 | #define IBLND_REJECT_CONN_RACE 1 /* You lost connection race */ |
459 | #define IBLND_REJECT_NO_RESOURCES 2 /* Out of memory/conns etc */ | |
460 | #define IBLND_REJECT_FATAL 3 /* Anything else */ | |
461 | #define IBLND_REJECT_CONN_UNCOMPAT 4 /* incompatible version peer */ | |
462 | #define IBLND_REJECT_CONN_STALE 5 /* stale peer */ | |
2fb44f2b JF |
463 | /* peer's rdma frags doesn't match mine */ |
464 | #define IBLND_REJECT_RDMA_FRAGS 6 | |
465 | /* peer's msg queue size doesn't match mine */ | |
466 | #define IBLND_REJECT_MSG_QUEUE_SIZE 7 | |
d7e09d03 PT |
467 | |
468 | /***********************************************************************/ | |
469 | ||
ec3d17c0 | 470 | typedef struct kib_rx /* receive message */ |
d7e09d03 | 471 | { |
ec3d17c0 MS |
472 | struct list_head rx_list; /* queue for attention */ |
473 | struct kib_conn *rx_conn; /* owning conn */ | |
d0bed035 | 474 | int rx_nob; /* # bytes received (-1 while posted) */ |
ec3d17c0 MS |
475 | enum ib_wc_status rx_status; /* completion status */ |
476 | kib_msg_t *rx_msg; /* message buffer (host vaddr) */ | |
477 | __u64 rx_msgaddr; /* message buffer (I/O addr) */ | |
270f0c31 | 478 | DECLARE_PCI_UNMAP_ADDR(rx_msgunmap); /* for dma_unmap_single() */ |
ec3d17c0 MS |
479 | struct ib_recv_wr rx_wrq; /* receive work item... */ |
480 | struct ib_sge rx_sge; /* ...and its memory */ | |
d7e09d03 PT |
481 | } kib_rx_t; |
482 | ||
d0bed035 JB |
483 | #define IBLND_POSTRX_DONT_POST 0 /* don't post */ |
484 | #define IBLND_POSTRX_NO_CREDIT 1 /* post: no credits */ | |
485 | #define IBLND_POSTRX_PEER_CREDIT 2 /* post: give peer back 1 credit */ | |
486 | #define IBLND_POSTRX_RSRVD_CREDIT 3 /* post: give self back 1 reserved credit */ | |
d7e09d03 | 487 | |
ec3d17c0 | 488 | typedef struct kib_tx /* transmit message */ |
d7e09d03 | 489 | { |
d0bed035 JB |
490 | struct list_head tx_list; /* queue on idle_txs ibc_tx_queue etc. */ |
491 | kib_tx_pool_t *tx_pool; /* pool I'm from */ | |
492 | struct kib_conn *tx_conn; /* owning conn */ | |
493 | short tx_sending; /* # tx callbacks outstanding */ | |
494 | short tx_queued; /* queued for sending */ | |
495 | short tx_waiting; /* waiting for peer */ | |
496 | int tx_status; /* LNET completion status */ | |
497 | unsigned long tx_deadline; /* completion deadline */ | |
498 | __u64 tx_cookie; /* completion cookie */ | |
499 | lnet_msg_t *tx_lntmsg[2]; /* lnet msgs to finalize on completion */ | |
500 | kib_msg_t *tx_msg; /* message buffer (host vaddr) */ | |
501 | __u64 tx_msgaddr; /* message buffer (I/O addr) */ | |
270f0c31 | 502 | DECLARE_PCI_UNMAP_ADDR(tx_msgunmap); /* for dma_unmap_single() */ |
d0bed035 | 503 | int tx_nwrq; /* # send work items */ |
ab9f2faf | 504 | struct ib_rdma_wr *tx_wrq; /* send work items... */ |
d0bed035 JB |
505 | struct ib_sge *tx_sge; /* ...and their memory */ |
506 | kib_rdma_desc_t *tx_rd; /* rdma descriptor */ | |
507 | int tx_nfrags; /* # entries in... */ | |
508 | struct scatterlist *tx_frags; /* dma_map_sg descriptor */ | |
509 | __u64 *tx_pages; /* rdma phys page addrs */ | |
510 | kib_fmr_t fmr; /* FMR */ | |
511 | int tx_dmadir; /* dma direction */ | |
d7e09d03 PT |
512 | } kib_tx_t; |
513 | ||
75c49d40 | 514 | typedef struct kib_connvars { |
ec3d17c0 | 515 | kib_msg_t cv_msg; /* connection-in-progress variables */ |
d7e09d03 PT |
516 | } kib_connvars_t; |
517 | ||
75c49d40 | 518 | typedef struct kib_conn { |
d0bed035 JB |
519 | struct kib_sched_info *ibc_sched; /* scheduler information */ |
520 | struct kib_peer *ibc_peer; /* owning peer */ | |
521 | kib_hca_dev_t *ibc_hdev; /* HCA bound on */ | |
522 | struct list_head ibc_list; /* stash on peer's conn list */ | |
523 | struct list_head ibc_sched_list; /* schedule for attention */ | |
524 | __u16 ibc_version; /* version of connection */ | |
4d99b258 LZ |
525 | /* reconnect later */ |
526 | __u16 ibc_reconnect:1; | |
d0bed035 JB |
527 | __u64 ibc_incarnation; /* which instance of the peer */ |
528 | atomic_t ibc_refcount; /* # users */ | |
529 | int ibc_state; /* what's happening */ | |
530 | int ibc_nsends_posted; /* # uncompleted sends */ | |
531 | int ibc_noops_posted; /* # uncompleted NOOPs */ | |
532 | int ibc_credits; /* # credits I have */ | |
ec3d17c0 MS |
533 | int ibc_outstanding_credits; /* # credits to return */ |
534 | int ibc_reserved_credits; /* # ACK/DONE msg credits */ | |
d0bed035 | 535 | int ibc_comms_error; /* set on comms error */ |
2fb44f2b JF |
536 | /* connections queue depth */ |
537 | __u16 ibc_queue_depth; | |
538 | /* connections max frags */ | |
539 | __u16 ibc_max_frags; | |
d0bed035 JB |
540 | unsigned int ibc_nrx:16; /* receive buffers owned */ |
541 | unsigned int ibc_scheduled:1; /* scheduled for attention */ | |
542 | unsigned int ibc_ready:1; /* CQ callback fired */ | |
543 | unsigned long ibc_last_send; /* time of last send */ | |
544 | struct list_head ibc_connd_list; /* link chain for */ | |
545 | /* kiblnd_check_conns only */ | |
546 | struct list_head ibc_early_rxs; /* rxs completed before ESTABLISHED */ | |
547 | struct list_head ibc_tx_noops; /* IBLND_MSG_NOOPs for */ | |
548 | /* IBLND_MSG_VERSION_1 */ | |
549 | struct list_head ibc_tx_queue; /* sends that need a credit */ | |
550 | struct list_head ibc_tx_queue_nocred; /* sends that don't need a */ | |
551 | /* credit */ | |
552 | struct list_head ibc_tx_queue_rsrvd; /* sends that need to */ | |
553 | /* reserve an ACK/DONE msg */ | |
554 | struct list_head ibc_active_txs; /* active tx awaiting completion */ | |
555 | spinlock_t ibc_lock; /* serialise */ | |
556 | kib_rx_t *ibc_rxs; /* the rx descs */ | |
557 | kib_pages_t *ibc_rx_pages; /* premapped rx msg pages */ | |
558 | ||
559 | struct rdma_cm_id *ibc_cmid; /* CM id */ | |
560 | struct ib_cq *ibc_cq; /* completion queue */ | |
561 | ||
562 | kib_connvars_t *ibc_connvars; /* in-progress connection state */ | |
d7e09d03 PT |
563 | } kib_conn_t; |
564 | ||
ec3d17c0 MS |
565 | #define IBLND_CONN_INIT 0 /* being initialised */ |
566 | #define IBLND_CONN_ACTIVE_CONNECT 1 /* active sending req */ | |
567 | #define IBLND_CONN_PASSIVE_WAIT 2 /* passive waiting for rtu */ | |
568 | #define IBLND_CONN_ESTABLISHED 3 /* connection established */ | |
569 | #define IBLND_CONN_CLOSING 4 /* being closed */ | |
570 | #define IBLND_CONN_DISCONNECTED 5 /* disconnected */ | |
d7e09d03 | 571 | |
75c49d40 | 572 | typedef struct kib_peer { |
ec3d17c0 MS |
573 | struct list_head ibp_list; /* stash on global peer list */ |
574 | lnet_nid_t ibp_nid; /* who's on the other end(s) */ | |
575 | lnet_ni_t *ibp_ni; /* LNet interface */ | |
ec3d17c0 MS |
576 | struct list_head ibp_conns; /* all active connections */ |
577 | struct list_head ibp_tx_queue; /* msgs waiting for a conn */ | |
ec3d17c0 | 578 | __u64 ibp_incarnation; /* incarnation of peer */ |
4d99b258 LZ |
579 | /* when (in jiffies) I was last alive */ |
580 | unsigned long ibp_last_alive; | |
581 | /* # users */ | |
582 | atomic_t ibp_refcount; | |
583 | /* version of peer */ | |
584 | __u16 ibp_version; | |
585 | /* current passive connection attempts */ | |
586 | unsigned short ibp_accepting; | |
587 | /* current active connection attempts */ | |
588 | unsigned short ibp_connecting; | |
589 | /* reconnect this peer later */ | |
590 | unsigned short ibp_reconnecting:1; | |
591 | /* # consecutive reconnection attempts to this peer */ | |
592 | unsigned int ibp_reconnected; | |
593 | /* errno on closing this peer */ | |
594 | int ibp_error; | |
a01fa108 AS |
595 | /* max map_on_demand */ |
596 | __u16 ibp_max_frags; | |
597 | /* max_peer_credits */ | |
598 | __u16 ibp_queue_depth; | |
d7e09d03 PT |
599 | } kib_peer_t; |
600 | ||
ec3d17c0 | 601 | extern kib_data_t kiblnd_data; |
d7e09d03 | 602 | |
8150a97f | 603 | void kiblnd_hdev_destroy(kib_hca_dev_t *hdev); |
d7e09d03 | 604 | |
9e7d5bf3 AS |
605 | int kiblnd_msg_queue_size(int version, struct lnet_ni *ni); |
606 | ||
607 | /* max # of fragments configured by user */ | |
608 | static inline int | |
609 | kiblnd_cfg_rdma_frags(struct lnet_ni *ni) | |
610 | { | |
32c8deb8 AS |
611 | struct lnet_ioctl_config_o2iblnd_tunables *tunables; |
612 | int mod; | |
613 | ||
614 | tunables = &ni->ni_lnd_tunables->lt_tun_u.lt_o2ib; | |
615 | mod = tunables->lnd_map_on_demand; | |
9e7d5bf3 AS |
616 | return mod ? mod : IBLND_MAX_RDMA_FRAGS; |
617 | } | |
618 | ||
619 | static inline int | |
620 | kiblnd_rdma_frags(int version, struct lnet_ni *ni) | |
621 | { | |
622 | return version == IBLND_MSG_VERSION_1 ? | |
623 | IBLND_MAX_RDMA_FRAGS : | |
624 | kiblnd_cfg_rdma_frags(ni); | |
625 | } | |
626 | ||
627 | static inline int | |
628 | kiblnd_concurrent_sends(int version, struct lnet_ni *ni) | |
629 | { | |
32c8deb8 | 630 | struct lnet_ioctl_config_o2iblnd_tunables *tunables; |
9e7d5bf3 AS |
631 | int concurrent_sends; |
632 | ||
32c8deb8 AS |
633 | tunables = &ni->ni_lnd_tunables->lt_tun_u.lt_o2ib; |
634 | concurrent_sends = tunables->lnd_concurrent_sends; | |
9e7d5bf3 AS |
635 | |
636 | if (version == IBLND_MSG_VERSION_1) { | |
637 | if (concurrent_sends > IBLND_MSG_QUEUE_SIZE_V1 * 2) | |
638 | return IBLND_MSG_QUEUE_SIZE_V1 * 2; | |
639 | ||
640 | if (concurrent_sends < IBLND_MSG_QUEUE_SIZE_V1 / 2) | |
641 | return IBLND_MSG_QUEUE_SIZE_V1 / 2; | |
642 | } | |
643 | ||
644 | return concurrent_sends; | |
645 | } | |
646 | ||
d7e09d03 PT |
647 | static inline void |
648 | kiblnd_hdev_addref_locked(kib_hca_dev_t *hdev) | |
649 | { | |
270f0c31 | 650 | LASSERT(atomic_read(&hdev->ibh_ref) > 0); |
d7e09d03 PT |
651 | atomic_inc(&hdev->ibh_ref); |
652 | } | |
653 | ||
654 | static inline void | |
655 | kiblnd_hdev_decref(kib_hca_dev_t *hdev) | |
656 | { | |
270f0c31 | 657 | LASSERT(atomic_read(&hdev->ibh_ref) > 0); |
d7e09d03 PT |
658 | if (atomic_dec_and_test(&hdev->ibh_ref)) |
659 | kiblnd_hdev_destroy(hdev); | |
660 | } | |
661 | ||
662 | static inline int | |
663 | kiblnd_dev_can_failover(kib_dev_t *dev) | |
664 | { | |
665 | if (!list_empty(&dev->ibd_fail_list)) /* already scheduled */ | |
666 | return 0; | |
667 | ||
5fd88337 | 668 | if (!*kiblnd_tunables.kib_dev_failover) /* disabled */ |
d7e09d03 PT |
669 | return 0; |
670 | ||
671 | if (*kiblnd_tunables.kib_dev_failover > 1) /* force failover */ | |
672 | return 1; | |
673 | ||
674 | return dev->ibd_can_failover; | |
675 | } | |
676 | ||
677 | #define kiblnd_conn_addref(conn) \ | |
678 | do { \ | |
679 | CDEBUG(D_NET, "conn[%p] (%d)++\n", \ | |
680 | (conn), atomic_read(&(conn)->ibc_refcount)); \ | |
681 | atomic_inc(&(conn)->ibc_refcount); \ | |
682 | } while (0) | |
683 | ||
684 | #define kiblnd_conn_decref(conn) \ | |
685 | do { \ | |
686 | unsigned long flags; \ | |
687 | \ | |
688 | CDEBUG(D_NET, "conn[%p] (%d)--\n", \ | |
689 | (conn), atomic_read(&(conn)->ibc_refcount)); \ | |
690 | LASSERT_ATOMIC_POS(&(conn)->ibc_refcount); \ | |
691 | if (atomic_dec_and_test(&(conn)->ibc_refcount)) { \ | |
692 | spin_lock_irqsave(&kiblnd_data.kib_connd_lock, flags); \ | |
693 | list_add_tail(&(conn)->ibc_list, \ | |
694 | &kiblnd_data.kib_connd_zombies); \ | |
695 | wake_up(&kiblnd_data.kib_connd_waitq); \ | |
696 | spin_unlock_irqrestore(&kiblnd_data.kib_connd_lock, flags);\ | |
697 | } \ | |
698 | } while (0) | |
699 | ||
700 | #define kiblnd_peer_addref(peer) \ | |
701 | do { \ | |
702 | CDEBUG(D_NET, "peer[%p] -> %s (%d)++\n", \ | |
703 | (peer), libcfs_nid2str((peer)->ibp_nid), \ | |
270f0c31 | 704 | atomic_read(&(peer)->ibp_refcount)); \ |
d7e09d03 PT |
705 | atomic_inc(&(peer)->ibp_refcount); \ |
706 | } while (0) | |
707 | ||
708 | #define kiblnd_peer_decref(peer) \ | |
709 | do { \ | |
710 | CDEBUG(D_NET, "peer[%p] -> %s (%d)--\n", \ | |
711 | (peer), libcfs_nid2str((peer)->ibp_nid), \ | |
270f0c31 | 712 | atomic_read(&(peer)->ibp_refcount)); \ |
d7e09d03 PT |
713 | LASSERT_ATOMIC_POS(&(peer)->ibp_refcount); \ |
714 | if (atomic_dec_and_test(&(peer)->ibp_refcount)) \ | |
715 | kiblnd_destroy_peer(peer); \ | |
716 | } while (0) | |
717 | ||
4d99b258 LZ |
718 | static inline bool |
719 | kiblnd_peer_connecting(kib_peer_t *peer) | |
720 | { | |
721 | return peer->ibp_connecting || | |
722 | peer->ibp_reconnecting || | |
723 | peer->ibp_accepting; | |
724 | } | |
725 | ||
726 | static inline bool | |
727 | kiblnd_peer_idle(kib_peer_t *peer) | |
728 | { | |
729 | return !kiblnd_peer_connecting(peer) && list_empty(&peer->ibp_conns); | |
730 | } | |
731 | ||
d7e09d03 | 732 | static inline struct list_head * |
270f0c31 | 733 | kiblnd_nid2peerlist(lnet_nid_t nid) |
d7e09d03 PT |
734 | { |
735 | unsigned int hash = | |
736 | ((unsigned int)nid) % kiblnd_data.kib_peer_hash_size; | |
737 | ||
8a1d7b09 | 738 | return &kiblnd_data.kib_peers[hash]; |
d7e09d03 PT |
739 | } |
740 | ||
741 | static inline int | |
270f0c31 | 742 | kiblnd_peer_active(kib_peer_t *peer) |
d7e09d03 PT |
743 | { |
744 | /* Am I in the peer hash table? */ | |
8a1d7b09 | 745 | return !list_empty(&peer->ibp_list); |
d7e09d03 PT |
746 | } |
747 | ||
748 | static inline kib_conn_t * | |
270f0c31 | 749 | kiblnd_get_conn_locked(kib_peer_t *peer) |
d7e09d03 | 750 | { |
270f0c31 | 751 | LASSERT(!list_empty(&peer->ibp_conns)); |
d7e09d03 PT |
752 | |
753 | /* just return the first connection */ | |
754 | return list_entry(peer->ibp_conns.next, kib_conn_t, ibc_list); | |
755 | } | |
756 | ||
757 | static inline int | |
758 | kiblnd_send_keepalive(kib_conn_t *conn) | |
759 | { | |
760 | return (*kiblnd_tunables.kib_keepalive > 0) && | |
761 | cfs_time_after(jiffies, conn->ibc_last_send + | |
27d81ace JY |
762 | msecs_to_jiffies(*kiblnd_tunables.kib_keepalive * |
763 | MSEC_PER_SEC)); | |
d7e09d03 PT |
764 | } |
765 | ||
766 | static inline int | |
767 | kiblnd_need_noop(kib_conn_t *conn) | |
768 | { | |
32c8deb8 AS |
769 | struct lnet_ioctl_config_o2iblnd_tunables *tunables; |
770 | lnet_ni_t *ni = conn->ibc_peer->ibp_ni; | |
771 | ||
270f0c31 | 772 | LASSERT(conn->ibc_state >= IBLND_CONN_ESTABLISHED); |
32c8deb8 | 773 | tunables = &ni->ni_lnd_tunables->lt_tun_u.lt_o2ib; |
d7e09d03 PT |
774 | |
775 | if (conn->ibc_outstanding_credits < | |
32c8deb8 | 776 | IBLND_CREDITS_HIGHWATER(tunables, conn->ibc_version) && |
d7e09d03 PT |
777 | !kiblnd_send_keepalive(conn)) |
778 | return 0; /* No need to send NOOP */ | |
779 | ||
780 | if (IBLND_OOB_CAPABLE(conn->ibc_version)) { | |
781 | if (!list_empty(&conn->ibc_tx_queue_nocred)) | |
782 | return 0; /* NOOP can be piggybacked */ | |
783 | ||
784 | /* No tx to piggyback NOOP onto or no credit to send a tx */ | |
785 | return (list_empty(&conn->ibc_tx_queue) || | |
5fd88337 | 786 | !conn->ibc_credits); |
d7e09d03 PT |
787 | } |
788 | ||
789 | if (!list_empty(&conn->ibc_tx_noops) || /* NOOP already queued */ | |
790 | !list_empty(&conn->ibc_tx_queue_nocred) || /* piggyback NOOP */ | |
5fd88337 | 791 | !conn->ibc_credits) /* no credit */ |
d7e09d03 PT |
792 | return 0; |
793 | ||
794 | if (conn->ibc_credits == 1 && /* last credit reserved for */ | |
5fd88337 | 795 | !conn->ibc_outstanding_credits) /* giving back credits */ |
d7e09d03 PT |
796 | return 0; |
797 | ||
798 | /* No tx to piggyback NOOP onto or no credit to send a tx */ | |
799 | return (list_empty(&conn->ibc_tx_queue) || conn->ibc_credits == 1); | |
800 | } | |
801 | ||
802 | static inline void | |
803 | kiblnd_abort_receives(kib_conn_t *conn) | |
804 | { | |
805 | ib_modify_qp(conn->ibc_cmid->qp, | |
806 | &kiblnd_data.kib_error_qpa, IB_QP_STATE); | |
807 | } | |
808 | ||
809 | static inline const char * | |
270f0c31 | 810 | kiblnd_queue2str(kib_conn_t *conn, struct list_head *q) |
d7e09d03 PT |
811 | { |
812 | if (q == &conn->ibc_tx_queue) | |
813 | return "tx_queue"; | |
814 | ||
815 | if (q == &conn->ibc_tx_queue_rsrvd) | |
816 | return "tx_queue_rsrvd"; | |
817 | ||
818 | if (q == &conn->ibc_tx_queue_nocred) | |
819 | return "tx_queue_nocred"; | |
820 | ||
821 | if (q == &conn->ibc_active_txs) | |
822 | return "active_txs"; | |
823 | ||
824 | LBUG(); | |
825 | return NULL; | |
826 | } | |
827 | ||
d0bed035 JB |
828 | /* CAVEAT EMPTOR: We rely on descriptor alignment to allow us to use the */ |
829 | /* lowest bits of the work request id to stash the work item type. */ | |
d7e09d03 | 830 | |
82fffff4 LZ |
831 | #define IBLND_WID_INVAL 0 |
832 | #define IBLND_WID_TX 1 | |
833 | #define IBLND_WID_RX 2 | |
834 | #define IBLND_WID_RDMA 3 | |
4d65730b DE |
835 | #define IBLND_WID_MR 4 |
836 | #define IBLND_WID_MASK 7UL | |
d7e09d03 PT |
837 | |
838 | static inline __u64 | |
270f0c31 | 839 | kiblnd_ptr2wreqid(void *ptr, int type) |
d7e09d03 PT |
840 | { |
841 | unsigned long lptr = (unsigned long)ptr; | |
842 | ||
5fd88337 JS |
843 | LASSERT(!(lptr & IBLND_WID_MASK)); |
844 | LASSERT(!(type & ~IBLND_WID_MASK)); | |
d7e09d03 PT |
845 | return (__u64)(lptr | type); |
846 | } | |
847 | ||
848 | static inline void * | |
270f0c31 | 849 | kiblnd_wreqid2ptr(__u64 wreqid) |
d7e09d03 PT |
850 | { |
851 | return (void *)(((unsigned long)wreqid) & ~IBLND_WID_MASK); | |
852 | } | |
853 | ||
854 | static inline int | |
270f0c31 | 855 | kiblnd_wreqid2type(__u64 wreqid) |
d7e09d03 | 856 | { |
8a1d7b09 | 857 | return wreqid & IBLND_WID_MASK; |
d7e09d03 PT |
858 | } |
859 | ||
860 | static inline void | |
270f0c31 | 861 | kiblnd_set_conn_state(kib_conn_t *conn, int state) |
d7e09d03 PT |
862 | { |
863 | conn->ibc_state = state; | |
864 | mb(); | |
865 | } | |
866 | ||
867 | static inline void | |
270f0c31 | 868 | kiblnd_init_msg(kib_msg_t *msg, int type, int body_nob) |
d7e09d03 PT |
869 | { |
870 | msg->ibm_type = type; | |
871 | msg->ibm_nob = offsetof(kib_msg_t, ibm_u) + body_nob; | |
872 | } | |
873 | ||
874 | static inline int | |
270f0c31 | 875 | kiblnd_rd_size(kib_rdma_desc_t *rd) |
d7e09d03 PT |
876 | { |
877 | int i; | |
878 | int size; | |
879 | ||
880 | for (i = size = 0; i < rd->rd_nfrags; i++) | |
881 | size += rd->rd_frags[i].rf_nob; | |
882 | ||
883 | return size; | |
884 | } | |
885 | ||
886 | static inline __u64 | |
887 | kiblnd_rd_frag_addr(kib_rdma_desc_t *rd, int index) | |
888 | { | |
889 | return rd->rd_frags[index].rf_addr; | |
890 | } | |
891 | ||
892 | static inline __u32 | |
893 | kiblnd_rd_frag_size(kib_rdma_desc_t *rd, int index) | |
894 | { | |
895 | return rd->rd_frags[index].rf_nob; | |
896 | } | |
897 | ||
898 | static inline __u32 | |
899 | kiblnd_rd_frag_key(kib_rdma_desc_t *rd, int index) | |
900 | { | |
901 | return rd->rd_key; | |
902 | } | |
903 | ||
904 | static inline int | |
905 | kiblnd_rd_consume_frag(kib_rdma_desc_t *rd, int index, __u32 nob) | |
906 | { | |
907 | if (nob < rd->rd_frags[index].rf_nob) { | |
908 | rd->rd_frags[index].rf_addr += nob; | |
909 | rd->rd_frags[index].rf_nob -= nob; | |
910 | } else { | |
83b912c6 | 911 | index++; |
d7e09d03 PT |
912 | } |
913 | ||
914 | return index; | |
915 | } | |
916 | ||
917 | static inline int | |
918 | kiblnd_rd_msg_size(kib_rdma_desc_t *rd, int msgtype, int n) | |
919 | { | |
270f0c31 MBD |
920 | LASSERT(msgtype == IBLND_MSG_GET_REQ || |
921 | msgtype == IBLND_MSG_PUT_ACK); | |
d7e09d03 PT |
922 | |
923 | return msgtype == IBLND_MSG_GET_REQ ? | |
924 | offsetof(kib_get_msg_t, ibgm_rd.rd_frags[n]) : | |
925 | offsetof(kib_putack_msg_t, ibpam_rd.rd_frags[n]); | |
926 | } | |
927 | ||
d7e09d03 PT |
928 | static inline __u64 |
929 | kiblnd_dma_mapping_error(struct ib_device *dev, u64 dma_addr) | |
930 | { | |
931 | return ib_dma_mapping_error(dev, dma_addr); | |
932 | } | |
933 | ||
934 | static inline __u64 kiblnd_dma_map_single(struct ib_device *dev, | |
935 | void *msg, size_t size, | |
936 | enum dma_data_direction direction) | |
937 | { | |
938 | return ib_dma_map_single(dev, msg, size, direction); | |
939 | } | |
940 | ||
941 | static inline void kiblnd_dma_unmap_single(struct ib_device *dev, | |
942 | __u64 addr, size_t size, | |
943 | enum dma_data_direction direction) | |
944 | { | |
945 | ib_dma_unmap_single(dev, addr, size, direction); | |
946 | } | |
947 | ||
948 | #define KIBLND_UNMAP_ADDR_SET(p, m, a) do {} while (0) | |
949 | #define KIBLND_UNMAP_ADDR(p, m, a) (a) | |
950 | ||
951 | static inline int kiblnd_dma_map_sg(struct ib_device *dev, | |
952 | struct scatterlist *sg, int nents, | |
953 | enum dma_data_direction direction) | |
954 | { | |
955 | return ib_dma_map_sg(dev, sg, nents, direction); | |
956 | } | |
957 | ||
958 | static inline void kiblnd_dma_unmap_sg(struct ib_device *dev, | |
959 | struct scatterlist *sg, int nents, | |
960 | enum dma_data_direction direction) | |
961 | { | |
962 | ib_dma_unmap_sg(dev, sg, nents, direction); | |
963 | } | |
964 | ||
965 | static inline __u64 kiblnd_sg_dma_address(struct ib_device *dev, | |
966 | struct scatterlist *sg) | |
967 | { | |
968 | return ib_sg_dma_address(dev, sg); | |
969 | } | |
970 | ||
971 | static inline unsigned int kiblnd_sg_dma_len(struct ib_device *dev, | |
972 | struct scatterlist *sg) | |
973 | { | |
974 | return ib_sg_dma_len(dev, sg); | |
975 | } | |
976 | ||
d0bed035 JB |
977 | /* XXX We use KIBLND_CONN_PARAM(e) as writable buffer, it's not strictly */ |
978 | /* right because OFED1.2 defines it as const, to use it we have to add */ | |
979 | /* (void *) cast to overcome "const" */ | |
d7e09d03 | 980 | |
ec3d17c0 MS |
981 | #define KIBLND_CONN_PARAM(e) ((e)->param.conn.private_data) |
982 | #define KIBLND_CONN_PARAM_LEN(e) ((e)->param.conn.private_data_len) | |
d7e09d03 | 983 | |
32c8deb8 | 984 | struct ib_mr *kiblnd_find_rd_dma_mr(struct lnet_ni *ni, kib_rdma_desc_t *rd, |
2fb44f2b | 985 | int negotiated_nfrags); |
d7e09d03 PT |
986 | void kiblnd_map_rx_descs(kib_conn_t *conn); |
987 | void kiblnd_unmap_rx_descs(kib_conn_t *conn); | |
d7e09d03 PT |
988 | void kiblnd_pool_free_node(kib_pool_t *pool, struct list_head *node); |
989 | struct list_head *kiblnd_pool_alloc_node(kib_poolset_t *ps); | |
990 | ||
80e05b34 DE |
991 | int kiblnd_fmr_pool_map(kib_fmr_poolset_t *fps, kib_tx_t *tx, |
992 | kib_rdma_desc_t *rd, __u32 nob, __u64 iov, | |
993 | kib_fmr_t *fmr); | |
d7e09d03 PT |
994 | void kiblnd_fmr_pool_unmap(kib_fmr_t *fmr, int status); |
995 | ||
f6e50066 | 996 | int kiblnd_tunables_setup(struct lnet_ni *ni); |
025ba826 | 997 | void kiblnd_tunables_init(void); |
d7e09d03 | 998 | |
270f0c31 | 999 | int kiblnd_connd(void *arg); |
d7e09d03 PT |
1000 | int kiblnd_scheduler(void *arg); |
1001 | int kiblnd_thread_start(int (*fn)(void *arg), void *arg, char *name); | |
270f0c31 | 1002 | int kiblnd_failover_thread(void *arg); |
d7e09d03 PT |
1003 | |
1004 | int kiblnd_alloc_pages(kib_pages_t **pp, int cpt, int npages); | |
d7e09d03 PT |
1005 | |
1006 | int kiblnd_cm_callback(struct rdma_cm_id *cmid, | |
1007 | struct rdma_cm_event *event); | |
1008 | int kiblnd_translate_mtu(int value); | |
1009 | ||
1010 | int kiblnd_dev_failover(kib_dev_t *dev); | |
270f0c31 MBD |
1011 | int kiblnd_create_peer(lnet_ni_t *ni, kib_peer_t **peerp, lnet_nid_t nid); |
1012 | void kiblnd_destroy_peer(kib_peer_t *peer); | |
4d99b258 | 1013 | bool kiblnd_reconnect_peer(kib_peer_t *peer); |
270f0c31 MBD |
1014 | void kiblnd_destroy_dev(kib_dev_t *dev); |
1015 | void kiblnd_unlink_peer_locked(kib_peer_t *peer); | |
270f0c31 | 1016 | kib_peer_t *kiblnd_find_peer_locked(lnet_nid_t nid); |
270f0c31 | 1017 | int kiblnd_close_stale_conns_locked(kib_peer_t *peer, |
c314c319 | 1018 | int version, __u64 incarnation); |
270f0c31 | 1019 | int kiblnd_close_peer_conns_locked(kib_peer_t *peer, int why); |
d7e09d03 | 1020 | |
270f0c31 | 1021 | kib_conn_t *kiblnd_create_conn(kib_peer_t *peer, struct rdma_cm_id *cmid, |
a01fa108 | 1022 | int state, int version); |
4d99b258 | 1023 | void kiblnd_destroy_conn(kib_conn_t *conn, bool free_conn); |
270f0c31 MBD |
1024 | void kiblnd_close_conn(kib_conn_t *conn, int error); |
1025 | void kiblnd_close_conn_locked(kib_conn_t *conn, int error); | |
d7e09d03 | 1026 | |
270f0c31 | 1027 | void kiblnd_launch_tx(lnet_ni_t *ni, kib_tx_t *tx, lnet_nid_t nid); |
270f0c31 | 1028 | void kiblnd_txlist_done(lnet_ni_t *ni, struct list_head *txlist, |
c314c319 | 1029 | int status); |
d7e09d03 PT |
1030 | |
1031 | void kiblnd_qp_event(struct ib_event *event, void *arg); | |
1032 | void kiblnd_cq_event(struct ib_event *event, void *arg); | |
1033 | void kiblnd_cq_completion(struct ib_cq *cq, void *arg); | |
1034 | ||
270f0c31 | 1035 | void kiblnd_pack_msg(lnet_ni_t *ni, kib_msg_t *msg, int version, |
c314c319 | 1036 | int credits, lnet_nid_t dstnid, __u64 dststamp); |
d7e09d03 | 1037 | int kiblnd_unpack_msg(kib_msg_t *msg, int nob); |
270f0c31 | 1038 | int kiblnd_post_rx(kib_rx_t *rx, int credit); |
d7e09d03 PT |
1039 | |
1040 | int kiblnd_send(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg); | |
1041 | int kiblnd_recv(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg, int delayed, | |
f351bad2 | 1042 | unsigned int niov, struct kvec *iov, lnet_kiov_t *kiov, |
d7e09d03 | 1043 | unsigned int offset, unsigned int mlen, unsigned int rlen); |