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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 */ | |
90 | int *kib_credits; /* # concurrent sends */ | |
91 | int *kib_peertxcredits; /* # concurrent sends to 1 peer */ | |
92 | int *kib_peerrtrcredits; /* # per-peer router buffer credits */ | |
93 | int *kib_peercredits_hiw; /* # when eagerly to return credits */ | |
94 | int *kib_peertimeout; /* seconds to consider peer dead */ | |
95 | char **kib_default_ipif; /* default IPoIB interface */ | |
96 | int *kib_retry_count; | |
97 | int *kib_rnr_retry_count; | |
98 | int *kib_concurrent_sends; /* send work queue sizing */ | |
99 | int *kib_ib_mtu; /* IB MTU */ | |
100 | int *kib_map_on_demand; /* map-on-demand if RD has more */ | |
101 | /* fragments than this value, 0 */ | |
102 | /* disable map-on-demand */ | |
103 | int *kib_fmr_pool_size; /* # FMRs in pool */ | |
104 | int *kib_fmr_flush_trigger; /* When to trigger FMR flush */ | |
105 | int *kib_fmr_cache; /* enable FMR pool cache? */ | |
106 | int *kib_require_priv_port; /* accept only privileged ports */ | |
107 | int *kib_use_priv_port; /* use privileged port for active connect */ | |
108 | int *kib_nscheds; /* # threads on each CPT */ | |
d7e09d03 PT |
109 | } kib_tunables_t; |
110 | ||
111 | extern kib_tunables_t kiblnd_tunables; | |
112 | ||
ec3d17c0 MS |
113 | #define IBLND_MSG_QUEUE_SIZE_V1 8 /* V1 only : # messages/RDMAs in-flight */ |
114 | #define IBLND_CREDIT_HIGHWATER_V1 7 /* V1 only : when eagerly to return credits */ | |
d7e09d03 | 115 | |
ec3d17c0 | 116 | #define IBLND_CREDITS_DEFAULT 8 /* default # of peer credits */ |
e5c2f7b5 | 117 | #define IBLND_CREDITS_MAX ((typeof(((kib_msg_t *) 0)->ibm_credits)) - 1) /* Max # of peer credits */ |
d7e09d03 PT |
118 | |
119 | #define IBLND_MSG_QUEUE_SIZE(v) ((v) == IBLND_MSG_VERSION_1 ? \ | |
120 | IBLND_MSG_QUEUE_SIZE_V1 : \ | |
121 | *kiblnd_tunables.kib_peertxcredits) /* # messages/RDMAs in-flight */ | |
122 | #define IBLND_CREDITS_HIGHWATER(v) ((v) == IBLND_MSG_VERSION_1 ? \ | |
123 | IBLND_CREDIT_HIGHWATER_V1 : \ | |
124 | *kiblnd_tunables.kib_peercredits_hiw) /* when eagerly to return credits */ | |
125 | ||
fa20105e GS |
126 | #define kiblnd_rdma_create_id(cb, dev, ps, qpt) rdma_create_id(&init_net, \ |
127 | cb, dev, \ | |
128 | ps, qpt) | |
d7e09d03 PT |
129 | |
130 | static inline int | |
131 | kiblnd_concurrent_sends_v1(void) | |
132 | { | |
133 | if (*kiblnd_tunables.kib_concurrent_sends > IBLND_MSG_QUEUE_SIZE_V1 * 2) | |
134 | return IBLND_MSG_QUEUE_SIZE_V1 * 2; | |
135 | ||
136 | if (*kiblnd_tunables.kib_concurrent_sends < IBLND_MSG_QUEUE_SIZE_V1 / 2) | |
137 | return IBLND_MSG_QUEUE_SIZE_V1 / 2; | |
138 | ||
139 | return *kiblnd_tunables.kib_concurrent_sends; | |
140 | } | |
141 | ||
142 | #define IBLND_CONCURRENT_SENDS(v) ((v) == IBLND_MSG_VERSION_1 ? \ | |
143 | kiblnd_concurrent_sends_v1() : \ | |
144 | *kiblnd_tunables.kib_concurrent_sends) | |
145 | /* 2 OOB shall suffice for 1 keepalive and 1 returning credits */ | |
146 | #define IBLND_OOB_CAPABLE(v) ((v) != IBLND_MSG_VERSION_1) | |
147 | #define IBLND_OOB_MSGS(v) (IBLND_OOB_CAPABLE(v) ? 2 : 0) | |
148 | ||
51078e25 | 149 | #define IBLND_MSG_SIZE (4 << 10) /* max size of queued messages (inc hdr) */ |
d7e09d03 | 150 | #define IBLND_MAX_RDMA_FRAGS LNET_MAX_IOV /* max # of fragments supported */ |
5fd88337 | 151 | #define IBLND_CFG_RDMA_FRAGS (*kiblnd_tunables.kib_map_on_demand ? \ |
d7e09d03 PT |
152 | *kiblnd_tunables.kib_map_on_demand : \ |
153 | IBLND_MAX_RDMA_FRAGS) /* max # of fragments configured by user */ | |
154 | #define IBLND_RDMA_FRAGS(v) ((v) == IBLND_MSG_VERSION_1 ? \ | |
155 | IBLND_MAX_RDMA_FRAGS : IBLND_CFG_RDMA_FRAGS) | |
156 | ||
157 | /************************/ | |
158 | /* derived constants... */ | |
159 | /* Pools (shared by connections on each CPT) */ | |
160 | /* These pools can grow at runtime, so don't need give a very large value */ | |
161 | #define IBLND_TX_POOL 256 | |
d7e09d03 PT |
162 | #define IBLND_FMR_POOL 256 |
163 | #define IBLND_FMR_POOL_FLUSH 192 | |
164 | ||
165 | /* TX messages (shared by all connections) */ | |
166 | #define IBLND_TX_MSGS() (*kiblnd_tunables.kib_ntx) | |
167 | ||
168 | /* RX messages (per connection) */ | |
169 | #define IBLND_RX_MSGS(v) (IBLND_MSG_QUEUE_SIZE(v) * 2 + IBLND_OOB_MSGS(v)) | |
170 | #define IBLND_RX_MSG_BYTES(v) (IBLND_RX_MSGS(v) * IBLND_MSG_SIZE) | |
171 | #define IBLND_RX_MSG_PAGES(v) ((IBLND_RX_MSG_BYTES(v) + PAGE_SIZE - 1) / PAGE_SIZE) | |
172 | ||
173 | /* WRs and CQEs (per connection) */ | |
174 | #define IBLND_RECV_WRS(v) IBLND_RX_MSGS(v) | |
175 | #define IBLND_SEND_WRS(v) ((IBLND_RDMA_FRAGS(v) + 1) * IBLND_CONCURRENT_SENDS(v)) | |
176 | #define IBLND_CQ_ENTRIES(v) (IBLND_RECV_WRS(v) + IBLND_SEND_WRS(v)) | |
177 | ||
178 | struct kib_hca_dev; | |
179 | ||
180 | /* o2iblnd can run over aliased interface */ | |
181 | #ifdef IFALIASZ | |
182 | #define KIB_IFNAME_SIZE IFALIASZ | |
183 | #else | |
184 | #define KIB_IFNAME_SIZE 256 | |
185 | #endif | |
186 | ||
75c49d40 | 187 | typedef struct { |
ec3d17c0 MS |
188 | struct list_head ibd_list; /* chain on kib_devs */ |
189 | struct list_head ibd_fail_list; /* chain on kib_failed_devs */ | |
190 | __u32 ibd_ifip; /* IPoIB interface IP */ | |
191 | ||
192 | /* IPoIB interface name */ | |
193 | char ibd_ifname[KIB_IFNAME_SIZE]; | |
194 | int ibd_nnets; /* # nets extant */ | |
195 | ||
196 | unsigned long ibd_next_failover; | |
197 | int ibd_failed_failover; /* # failover failures */ | |
198 | unsigned int ibd_failover; /* failover in progress */ | |
d0bed035 | 199 | unsigned int ibd_can_failover; /* IPoIB interface is a bonding master */ |
ec3d17c0 MS |
200 | struct list_head ibd_nets; |
201 | struct kib_hca_dev *ibd_hdev; | |
d7e09d03 PT |
202 | } kib_dev_t; |
203 | ||
75c49d40 | 204 | typedef struct kib_hca_dev { |
ec3d17c0 MS |
205 | struct rdma_cm_id *ibh_cmid; /* listener cmid */ |
206 | struct ib_device *ibh_ibdev; /* IB device */ | |
207 | int ibh_page_shift; /* page shift of current HCA */ | |
208 | int ibh_page_size; /* page size of current HCA */ | |
209 | __u64 ibh_page_mask; /* page mask of current HCA */ | |
210 | int ibh_mr_shift; /* bits shift of max MR size */ | |
211 | __u64 ibh_mr_size; /* size of MR */ | |
212 | int ibh_nmrs; /* # of global MRs */ | |
213 | struct ib_mr **ibh_mrs; /* global MR */ | |
214 | struct ib_pd *ibh_pd; /* PD */ | |
215 | kib_dev_t *ibh_dev; /* owner */ | |
216 | atomic_t ibh_ref; /* refcount */ | |
d7e09d03 PT |
217 | } kib_hca_dev_t; |
218 | ||
219 | /** # of seconds to keep pool alive */ | |
220 | #define IBLND_POOL_DEADLINE 300 | |
221 | /** # of seconds to retry if allocation failed */ | |
222 | #define IBLND_POOL_RETRY 1 | |
223 | ||
75c49d40 | 224 | typedef struct { |
ec3d17c0 MS |
225 | int ibp_npages; /* # pages */ |
226 | struct page *ibp_pages[0]; /* page array */ | |
d7e09d03 PT |
227 | } kib_pages_t; |
228 | ||
d7e09d03 PT |
229 | struct kib_pool; |
230 | struct kib_poolset; | |
231 | ||
232 | typedef int (*kib_ps_pool_create_t)(struct kib_poolset *ps, | |
233 | int inc, struct kib_pool **pp_po); | |
234 | typedef void (*kib_ps_pool_destroy_t)(struct kib_pool *po); | |
235 | typedef void (*kib_ps_node_init_t)(struct kib_pool *po, struct list_head *node); | |
236 | typedef void (*kib_ps_node_fini_t)(struct kib_pool *po, struct list_head *node); | |
237 | ||
238 | struct kib_net; | |
239 | ||
240 | #define IBLND_POOL_NAME_LEN 32 | |
241 | ||
75c49d40 | 242 | typedef struct kib_poolset { |
ec3d17c0 MS |
243 | spinlock_t ps_lock; /* serialize */ |
244 | struct kib_net *ps_net; /* network it belongs to */ | |
245 | char ps_name[IBLND_POOL_NAME_LEN]; /* pool set name */ | |
246 | struct list_head ps_pool_list; /* list of pools */ | |
247 | struct list_head ps_failed_pool_list;/* failed pool list */ | |
d0bed035 JB |
248 | unsigned long ps_next_retry; /* time stamp for retry if */ |
249 | /* failed to allocate */ | |
ec3d17c0 MS |
250 | int ps_increasing; /* is allocating new pool */ |
251 | int ps_pool_size; /* new pool size */ | |
252 | int ps_cpt; /* CPT id */ | |
253 | ||
254 | kib_ps_pool_create_t ps_pool_create; /* create a new pool */ | |
255 | kib_ps_pool_destroy_t ps_pool_destroy; /* destroy a pool */ | |
d0bed035 | 256 | kib_ps_node_init_t ps_node_init; /* initialize new allocated node */ |
ec3d17c0 | 257 | kib_ps_node_fini_t ps_node_fini; /* finalize node */ |
d7e09d03 PT |
258 | } kib_poolset_t; |
259 | ||
75c49d40 | 260 | typedef struct kib_pool { |
d0bed035 JB |
261 | struct list_head po_list; /* chain on pool list */ |
262 | struct list_head po_free_list; /* pre-allocated node */ | |
263 | kib_poolset_t *po_owner; /* pool_set of this pool */ | |
264 | unsigned long po_deadline; /* deadline of this pool */ | |
265 | int po_allocated; /* # of elements in use */ | |
266 | int po_failed; /* pool is created on failed HCA */ | |
267 | int po_size; /* # of pre-allocated elements */ | |
d7e09d03 PT |
268 | } kib_pool_t; |
269 | ||
270 | typedef struct { | |
ec3d17c0 MS |
271 | kib_poolset_t tps_poolset; /* pool-set */ |
272 | __u64 tps_next_tx_cookie; /* cookie of TX */ | |
d7e09d03 PT |
273 | } kib_tx_poolset_t; |
274 | ||
275 | typedef struct { | |
ec3d17c0 MS |
276 | kib_pool_t tpo_pool; /* pool */ |
277 | struct kib_hca_dev *tpo_hdev; /* device for this pool */ | |
278 | struct kib_tx *tpo_tx_descs; /* all the tx descriptors */ | |
279 | kib_pages_t *tpo_tx_pages; /* premapped tx msg pages */ | |
d7e09d03 PT |
280 | } kib_tx_pool_t; |
281 | ||
75c49d40 | 282 | typedef struct { |
ec3d17c0 MS |
283 | spinlock_t fps_lock; /* serialize */ |
284 | struct kib_net *fps_net; /* IB network */ | |
285 | struct list_head fps_pool_list; /* FMR pool list */ | |
286 | struct list_head fps_failed_pool_list;/* FMR pool list */ | |
287 | __u64 fps_version; /* validity stamp */ | |
288 | int fps_cpt; /* CPT id */ | |
289 | int fps_pool_size; | |
290 | int fps_flush_trigger; | |
291 | int fps_increasing; /* is allocating new pool */ | |
d0bed035 JB |
292 | unsigned long fps_next_retry; /* time stamp for retry if*/ |
293 | /* failed to allocate */ | |
d7e09d03 PT |
294 | } kib_fmr_poolset_t; |
295 | ||
75c49d40 | 296 | typedef struct { |
ec3d17c0 MS |
297 | struct list_head fpo_list; /* chain on pool list */ |
298 | struct kib_hca_dev *fpo_hdev; /* device for this pool */ | |
299 | kib_fmr_poolset_t *fpo_owner; /* owner of this pool */ | |
300 | struct ib_fmr_pool *fpo_fmr_pool; /* IB FMR pool */ | |
301 | unsigned long fpo_deadline; /* deadline of this pool */ | |
302 | int fpo_failed; /* fmr pool is failed */ | |
303 | int fpo_map_count; /* # of mapped FMR */ | |
d7e09d03 PT |
304 | } kib_fmr_pool_t; |
305 | ||
306 | typedef struct { | |
ec3d17c0 MS |
307 | struct ib_pool_fmr *fmr_pfmr; /* IB pool fmr */ |
308 | kib_fmr_pool_t *fmr_pool; /* pool of FMR */ | |
d7e09d03 PT |
309 | } kib_fmr_t; |
310 | ||
75c49d40 | 311 | typedef struct kib_net { |
ec3d17c0 MS |
312 | struct list_head ibn_list; /* chain on kib_dev_t::ibd_nets */ |
313 | __u64 ibn_incarnation;/* my epoch */ | |
314 | int ibn_init; /* initialisation state */ | |
315 | int ibn_shutdown; /* shutting down? */ | |
d7e09d03 | 316 | |
ec3d17c0 MS |
317 | atomic_t ibn_npeers; /* # peers extant */ |
318 | atomic_t ibn_nconns; /* # connections extant */ | |
d7e09d03 | 319 | |
ec3d17c0 MS |
320 | kib_tx_poolset_t **ibn_tx_ps; /* tx pool-set */ |
321 | kib_fmr_poolset_t **ibn_fmr_ps; /* fmr pool-set */ | |
d7e09d03 | 322 | |
ec3d17c0 | 323 | kib_dev_t *ibn_dev; /* underlying IB device */ |
d7e09d03 PT |
324 | } kib_net_t; |
325 | ||
326 | #define KIB_THREAD_SHIFT 16 | |
327 | #define KIB_THREAD_ID(cpt, tid) ((cpt) << KIB_THREAD_SHIFT | (tid)) | |
328 | #define KIB_THREAD_CPT(id) ((id) >> KIB_THREAD_SHIFT) | |
329 | #define KIB_THREAD_TID(id) ((id) & ((1UL << KIB_THREAD_SHIFT) - 1)) | |
330 | ||
331 | struct kib_sched_info { | |
ec3d17c0 MS |
332 | spinlock_t ibs_lock; /* serialise */ |
333 | wait_queue_head_t ibs_waitq; /* schedulers sleep here */ | |
334 | struct list_head ibs_conns; /* conns to check for rx completions */ | |
335 | int ibs_nthreads; /* number of scheduler threads */ | |
336 | int ibs_nthreads_max; /* max allowed scheduler threads */ | |
337 | int ibs_cpt; /* CPT id */ | |
d7e09d03 PT |
338 | }; |
339 | ||
75c49d40 | 340 | typedef struct { |
d0bed035 JB |
341 | int kib_init; /* initialisation state */ |
342 | int kib_shutdown; /* shut down? */ | |
343 | struct list_head kib_devs; /* IB devices extant */ | |
344 | struct list_head kib_failed_devs; /* list head of failed devices */ | |
345 | wait_queue_head_t kib_failover_waitq; /* schedulers sleep here */ | |
346 | atomic_t kib_nthreads; /* # live threads */ | |
347 | rwlock_t kib_global_lock; /* stabilize net/dev/peer/conn ops */ | |
348 | struct list_head *kib_peers; /* hash table of all my known peers */ | |
349 | int kib_peer_hash_size; /* size of kib_peers */ | |
350 | void *kib_connd; /* the connd task (serialisation assertions) */ | |
351 | struct list_head kib_connd_conns; /* connections to setup/teardown */ | |
352 | struct list_head kib_connd_zombies; /* connections with zero refcount */ | |
353 | wait_queue_head_t kib_connd_waitq; /* connection daemon sleeps here */ | |
354 | spinlock_t kib_connd_lock; /* serialise */ | |
355 | struct ib_qp_attr kib_error_qpa; /* QP->ERROR */ | |
356 | struct kib_sched_info **kib_scheds; /* percpt data for schedulers */ | |
d7e09d03 PT |
357 | } kib_data_t; |
358 | ||
ec3d17c0 MS |
359 | #define IBLND_INIT_NOTHING 0 |
360 | #define IBLND_INIT_DATA 1 | |
361 | #define IBLND_INIT_ALL 2 | |
d7e09d03 PT |
362 | |
363 | /************************************************************************ | |
364 | * IB Wire message format. | |
365 | * These are sent in sender's byte order (i.e. receiver flips). | |
366 | */ | |
367 | ||
75c49d40 | 368 | typedef struct kib_connparams { |
ec3d17c0 MS |
369 | __u16 ibcp_queue_depth; |
370 | __u16 ibcp_max_frags; | |
371 | __u32 ibcp_max_msg_size; | |
d7e09d03 PT |
372 | } WIRE_ATTR kib_connparams_t; |
373 | ||
75c49d40 | 374 | typedef struct { |
ec3d17c0 MS |
375 | lnet_hdr_t ibim_hdr; /* portals header */ |
376 | char ibim_payload[0]; /* piggy-backed payload */ | |
d7e09d03 PT |
377 | } WIRE_ATTR kib_immediate_msg_t; |
378 | ||
75c49d40 | 379 | typedef struct { |
ec3d17c0 MS |
380 | __u32 rf_nob; /* # bytes this frag */ |
381 | __u64 rf_addr; /* CAVEAT EMPTOR: misaligned!! */ | |
d7e09d03 PT |
382 | } WIRE_ATTR kib_rdma_frag_t; |
383 | ||
75c49d40 | 384 | typedef struct { |
ec3d17c0 MS |
385 | __u32 rd_key; /* local/remote key */ |
386 | __u32 rd_nfrags; /* # fragments */ | |
387 | kib_rdma_frag_t rd_frags[0]; /* buffer frags */ | |
d7e09d03 PT |
388 | } WIRE_ATTR kib_rdma_desc_t; |
389 | ||
75c49d40 | 390 | typedef struct { |
ec3d17c0 MS |
391 | lnet_hdr_t ibprm_hdr; /* portals header */ |
392 | __u64 ibprm_cookie; /* opaque completion cookie */ | |
d7e09d03 PT |
393 | } WIRE_ATTR kib_putreq_msg_t; |
394 | ||
75c49d40 | 395 | typedef struct { |
ec3d17c0 MS |
396 | __u64 ibpam_src_cookie; /* reflected completion cookie */ |
397 | __u64 ibpam_dst_cookie; /* opaque completion cookie */ | |
398 | kib_rdma_desc_t ibpam_rd; /* sender's sink buffer */ | |
d7e09d03 PT |
399 | } WIRE_ATTR kib_putack_msg_t; |
400 | ||
75c49d40 | 401 | typedef struct { |
ec3d17c0 MS |
402 | lnet_hdr_t ibgm_hdr; /* portals header */ |
403 | __u64 ibgm_cookie; /* opaque completion cookie */ | |
404 | kib_rdma_desc_t ibgm_rd; /* rdma descriptor */ | |
d7e09d03 PT |
405 | } WIRE_ATTR kib_get_msg_t; |
406 | ||
75c49d40 | 407 | typedef struct { |
ec3d17c0 MS |
408 | __u64 ibcm_cookie; /* opaque completion cookie */ |
409 | __s32 ibcm_status; /* < 0 failure: >= 0 length */ | |
d7e09d03 PT |
410 | } WIRE_ATTR kib_completion_msg_t; |
411 | ||
75c49d40 | 412 | typedef struct { |
d7e09d03 | 413 | /* First 2 fields fixed FOR ALL TIME */ |
ec3d17c0 MS |
414 | __u32 ibm_magic; /* I'm an ibnal message */ |
415 | __u16 ibm_version; /* this is my version number */ | |
416 | ||
417 | __u8 ibm_type; /* msg type */ | |
418 | __u8 ibm_credits; /* returned credits */ | |
419 | __u32 ibm_nob; /* # bytes in whole message */ | |
420 | __u32 ibm_cksum; /* checksum (0 == no checksum) */ | |
421 | __u64 ibm_srcnid; /* sender's NID */ | |
422 | __u64 ibm_srcstamp; /* sender's incarnation */ | |
423 | __u64 ibm_dstnid; /* destination's NID */ | |
424 | __u64 ibm_dststamp; /* destination's incarnation */ | |
d7e09d03 PT |
425 | |
426 | union { | |
ec3d17c0 MS |
427 | kib_connparams_t connparams; |
428 | kib_immediate_msg_t immediate; | |
429 | kib_putreq_msg_t putreq; | |
430 | kib_putack_msg_t putack; | |
431 | kib_get_msg_t get; | |
432 | kib_completion_msg_t completion; | |
d7e09d03 PT |
433 | } WIRE_ATTR ibm_u; |
434 | } WIRE_ATTR kib_msg_t; | |
435 | ||
ec3d17c0 | 436 | #define IBLND_MSG_MAGIC LNET_PROTO_IB_MAGIC /* unique magic */ |
d7e09d03 | 437 | |
ec3d17c0 MS |
438 | #define IBLND_MSG_VERSION_1 0x11 |
439 | #define IBLND_MSG_VERSION_2 0x12 | |
440 | #define IBLND_MSG_VERSION IBLND_MSG_VERSION_2 | |
d7e09d03 | 441 | |
ec3d17c0 MS |
442 | #define IBLND_MSG_CONNREQ 0xc0 /* connection request */ |
443 | #define IBLND_MSG_CONNACK 0xc1 /* connection acknowledge */ | |
444 | #define IBLND_MSG_NOOP 0xd0 /* nothing (just credits) */ | |
445 | #define IBLND_MSG_IMMEDIATE 0xd1 /* immediate */ | |
446 | #define IBLND_MSG_PUT_REQ 0xd2 /* putreq (src->sink) */ | |
447 | #define IBLND_MSG_PUT_NAK 0xd3 /* completion (sink->src) */ | |
448 | #define IBLND_MSG_PUT_ACK 0xd4 /* putack (sink->src) */ | |
449 | #define IBLND_MSG_PUT_DONE 0xd5 /* completion (src->sink) */ | |
450 | #define IBLND_MSG_GET_REQ 0xd6 /* getreq (sink->src) */ | |
451 | #define IBLND_MSG_GET_DONE 0xd7 /* completion (src->sink: all OK) */ | |
d7e09d03 PT |
452 | |
453 | typedef struct { | |
ec3d17c0 MS |
454 | __u32 ibr_magic; /* sender's magic */ |
455 | __u16 ibr_version; /* sender's version */ | |
456 | __u8 ibr_why; /* reject reason */ | |
457 | __u8 ibr_padding; /* padding */ | |
458 | __u64 ibr_incarnation; /* incarnation of peer */ | |
459 | kib_connparams_t ibr_cp; /* connection parameters */ | |
d7e09d03 PT |
460 | } WIRE_ATTR kib_rej_t; |
461 | ||
462 | /* connection rejection reasons */ | |
ec3d17c0 MS |
463 | #define IBLND_REJECT_CONN_RACE 1 /* You lost connection race */ |
464 | #define IBLND_REJECT_NO_RESOURCES 2 /* Out of memory/conns etc */ | |
465 | #define IBLND_REJECT_FATAL 3 /* Anything else */ | |
466 | #define IBLND_REJECT_CONN_UNCOMPAT 4 /* incompatible version peer */ | |
467 | #define IBLND_REJECT_CONN_STALE 5 /* stale peer */ | |
d0bed035 JB |
468 | #define IBLND_REJECT_RDMA_FRAGS 6 /* Fatal: peer's rdma frags can't match */ |
469 | /* mine */ | |
470 | #define IBLND_REJECT_MSG_QUEUE_SIZE 7 /* Fatal: peer's msg queue size can't */ | |
471 | /* match mine */ | |
d7e09d03 PT |
472 | |
473 | /***********************************************************************/ | |
474 | ||
ec3d17c0 | 475 | typedef struct kib_rx /* receive message */ |
d7e09d03 | 476 | { |
ec3d17c0 MS |
477 | struct list_head rx_list; /* queue for attention */ |
478 | struct kib_conn *rx_conn; /* owning conn */ | |
d0bed035 | 479 | int rx_nob; /* # bytes received (-1 while posted) */ |
ec3d17c0 MS |
480 | enum ib_wc_status rx_status; /* completion status */ |
481 | kib_msg_t *rx_msg; /* message buffer (host vaddr) */ | |
482 | __u64 rx_msgaddr; /* message buffer (I/O addr) */ | |
270f0c31 | 483 | DECLARE_PCI_UNMAP_ADDR(rx_msgunmap); /* for dma_unmap_single() */ |
ec3d17c0 MS |
484 | struct ib_recv_wr rx_wrq; /* receive work item... */ |
485 | struct ib_sge rx_sge; /* ...and its memory */ | |
d7e09d03 PT |
486 | } kib_rx_t; |
487 | ||
d0bed035 JB |
488 | #define IBLND_POSTRX_DONT_POST 0 /* don't post */ |
489 | #define IBLND_POSTRX_NO_CREDIT 1 /* post: no credits */ | |
490 | #define IBLND_POSTRX_PEER_CREDIT 2 /* post: give peer back 1 credit */ | |
491 | #define IBLND_POSTRX_RSRVD_CREDIT 3 /* post: give self back 1 reserved credit */ | |
d7e09d03 | 492 | |
ec3d17c0 | 493 | typedef struct kib_tx /* transmit message */ |
d7e09d03 | 494 | { |
d0bed035 JB |
495 | struct list_head tx_list; /* queue on idle_txs ibc_tx_queue etc. */ |
496 | kib_tx_pool_t *tx_pool; /* pool I'm from */ | |
497 | struct kib_conn *tx_conn; /* owning conn */ | |
498 | short tx_sending; /* # tx callbacks outstanding */ | |
499 | short tx_queued; /* queued for sending */ | |
500 | short tx_waiting; /* waiting for peer */ | |
501 | int tx_status; /* LNET completion status */ | |
502 | unsigned long tx_deadline; /* completion deadline */ | |
503 | __u64 tx_cookie; /* completion cookie */ | |
504 | lnet_msg_t *tx_lntmsg[2]; /* lnet msgs to finalize on completion */ | |
505 | kib_msg_t *tx_msg; /* message buffer (host vaddr) */ | |
506 | __u64 tx_msgaddr; /* message buffer (I/O addr) */ | |
270f0c31 | 507 | DECLARE_PCI_UNMAP_ADDR(tx_msgunmap); /* for dma_unmap_single() */ |
d0bed035 | 508 | int tx_nwrq; /* # send work items */ |
ab9f2faf | 509 | struct ib_rdma_wr *tx_wrq; /* send work items... */ |
d0bed035 JB |
510 | struct ib_sge *tx_sge; /* ...and their memory */ |
511 | kib_rdma_desc_t *tx_rd; /* rdma descriptor */ | |
512 | int tx_nfrags; /* # entries in... */ | |
513 | struct scatterlist *tx_frags; /* dma_map_sg descriptor */ | |
514 | __u64 *tx_pages; /* rdma phys page addrs */ | |
515 | kib_fmr_t fmr; /* FMR */ | |
516 | int tx_dmadir; /* dma direction */ | |
d7e09d03 PT |
517 | } kib_tx_t; |
518 | ||
75c49d40 | 519 | typedef struct kib_connvars { |
ec3d17c0 | 520 | kib_msg_t cv_msg; /* connection-in-progress variables */ |
d7e09d03 PT |
521 | } kib_connvars_t; |
522 | ||
75c49d40 | 523 | typedef struct kib_conn { |
d0bed035 JB |
524 | struct kib_sched_info *ibc_sched; /* scheduler information */ |
525 | struct kib_peer *ibc_peer; /* owning peer */ | |
526 | kib_hca_dev_t *ibc_hdev; /* HCA bound on */ | |
527 | struct list_head ibc_list; /* stash on peer's conn list */ | |
528 | struct list_head ibc_sched_list; /* schedule for attention */ | |
529 | __u16 ibc_version; /* version of connection */ | |
530 | __u64 ibc_incarnation; /* which instance of the peer */ | |
531 | atomic_t ibc_refcount; /* # users */ | |
532 | int ibc_state; /* what's happening */ | |
533 | int ibc_nsends_posted; /* # uncompleted sends */ | |
534 | int ibc_noops_posted; /* # uncompleted NOOPs */ | |
535 | int ibc_credits; /* # credits I have */ | |
ec3d17c0 MS |
536 | int ibc_outstanding_credits; /* # credits to return */ |
537 | int ibc_reserved_credits; /* # ACK/DONE msg credits */ | |
d0bed035 JB |
538 | int ibc_comms_error; /* set on comms error */ |
539 | unsigned int ibc_nrx:16; /* receive buffers owned */ | |
540 | unsigned int ibc_scheduled:1; /* scheduled for attention */ | |
541 | unsigned int ibc_ready:1; /* CQ callback fired */ | |
542 | unsigned long ibc_last_send; /* time of last send */ | |
543 | struct list_head ibc_connd_list; /* link chain for */ | |
544 | /* kiblnd_check_conns only */ | |
545 | struct list_head ibc_early_rxs; /* rxs completed before ESTABLISHED */ | |
546 | struct list_head ibc_tx_noops; /* IBLND_MSG_NOOPs for */ | |
547 | /* IBLND_MSG_VERSION_1 */ | |
548 | struct list_head ibc_tx_queue; /* sends that need a credit */ | |
549 | struct list_head ibc_tx_queue_nocred; /* sends that don't need a */ | |
550 | /* credit */ | |
551 | struct list_head ibc_tx_queue_rsrvd; /* sends that need to */ | |
552 | /* reserve an ACK/DONE msg */ | |
553 | struct list_head ibc_active_txs; /* active tx awaiting completion */ | |
554 | spinlock_t ibc_lock; /* serialise */ | |
555 | kib_rx_t *ibc_rxs; /* the rx descs */ | |
556 | kib_pages_t *ibc_rx_pages; /* premapped rx msg pages */ | |
557 | ||
558 | struct rdma_cm_id *ibc_cmid; /* CM id */ | |
559 | struct ib_cq *ibc_cq; /* completion queue */ | |
560 | ||
561 | kib_connvars_t *ibc_connvars; /* in-progress connection state */ | |
d7e09d03 PT |
562 | } kib_conn_t; |
563 | ||
ec3d17c0 MS |
564 | #define IBLND_CONN_INIT 0 /* being initialised */ |
565 | #define IBLND_CONN_ACTIVE_CONNECT 1 /* active sending req */ | |
566 | #define IBLND_CONN_PASSIVE_WAIT 2 /* passive waiting for rtu */ | |
567 | #define IBLND_CONN_ESTABLISHED 3 /* connection established */ | |
568 | #define IBLND_CONN_CLOSING 4 /* being closed */ | |
569 | #define IBLND_CONN_DISCONNECTED 5 /* disconnected */ | |
d7e09d03 | 570 | |
75c49d40 | 571 | typedef struct kib_peer { |
ec3d17c0 MS |
572 | struct list_head ibp_list; /* stash on global peer list */ |
573 | lnet_nid_t ibp_nid; /* who's on the other end(s) */ | |
574 | lnet_ni_t *ibp_ni; /* LNet interface */ | |
575 | atomic_t ibp_refcount; /* # users */ | |
576 | struct list_head ibp_conns; /* all active connections */ | |
577 | struct list_head ibp_tx_queue; /* msgs waiting for a conn */ | |
578 | __u16 ibp_version; /* version of peer */ | |
579 | __u64 ibp_incarnation; /* incarnation of peer */ | |
580 | int ibp_connecting; /* current active connection attempts | |
581 | */ | |
582 | int ibp_accepting; /* current passive connection attempts | |
583 | */ | |
584 | int ibp_error; /* errno on closing this peer */ | |
585 | unsigned long ibp_last_alive; /* when (in jiffies) I was last alive | |
586 | */ | |
d7e09d03 PT |
587 | } kib_peer_t; |
588 | ||
ec3d17c0 | 589 | extern kib_data_t kiblnd_data; |
d7e09d03 | 590 | |
8150a97f | 591 | void kiblnd_hdev_destroy(kib_hca_dev_t *hdev); |
d7e09d03 PT |
592 | |
593 | static inline void | |
594 | kiblnd_hdev_addref_locked(kib_hca_dev_t *hdev) | |
595 | { | |
270f0c31 | 596 | LASSERT(atomic_read(&hdev->ibh_ref) > 0); |
d7e09d03 PT |
597 | atomic_inc(&hdev->ibh_ref); |
598 | } | |
599 | ||
600 | static inline void | |
601 | kiblnd_hdev_decref(kib_hca_dev_t *hdev) | |
602 | { | |
270f0c31 | 603 | LASSERT(atomic_read(&hdev->ibh_ref) > 0); |
d7e09d03 PT |
604 | if (atomic_dec_and_test(&hdev->ibh_ref)) |
605 | kiblnd_hdev_destroy(hdev); | |
606 | } | |
607 | ||
608 | static inline int | |
609 | kiblnd_dev_can_failover(kib_dev_t *dev) | |
610 | { | |
611 | if (!list_empty(&dev->ibd_fail_list)) /* already scheduled */ | |
612 | return 0; | |
613 | ||
5fd88337 | 614 | if (!*kiblnd_tunables.kib_dev_failover) /* disabled */ |
d7e09d03 PT |
615 | return 0; |
616 | ||
617 | if (*kiblnd_tunables.kib_dev_failover > 1) /* force failover */ | |
618 | return 1; | |
619 | ||
620 | return dev->ibd_can_failover; | |
621 | } | |
622 | ||
623 | #define kiblnd_conn_addref(conn) \ | |
624 | do { \ | |
625 | CDEBUG(D_NET, "conn[%p] (%d)++\n", \ | |
626 | (conn), atomic_read(&(conn)->ibc_refcount)); \ | |
627 | atomic_inc(&(conn)->ibc_refcount); \ | |
628 | } while (0) | |
629 | ||
630 | #define kiblnd_conn_decref(conn) \ | |
631 | do { \ | |
632 | unsigned long flags; \ | |
633 | \ | |
634 | CDEBUG(D_NET, "conn[%p] (%d)--\n", \ | |
635 | (conn), atomic_read(&(conn)->ibc_refcount)); \ | |
636 | LASSERT_ATOMIC_POS(&(conn)->ibc_refcount); \ | |
637 | if (atomic_dec_and_test(&(conn)->ibc_refcount)) { \ | |
638 | spin_lock_irqsave(&kiblnd_data.kib_connd_lock, flags); \ | |
639 | list_add_tail(&(conn)->ibc_list, \ | |
640 | &kiblnd_data.kib_connd_zombies); \ | |
641 | wake_up(&kiblnd_data.kib_connd_waitq); \ | |
642 | spin_unlock_irqrestore(&kiblnd_data.kib_connd_lock, flags);\ | |
643 | } \ | |
644 | } while (0) | |
645 | ||
646 | #define kiblnd_peer_addref(peer) \ | |
647 | do { \ | |
648 | CDEBUG(D_NET, "peer[%p] -> %s (%d)++\n", \ | |
649 | (peer), libcfs_nid2str((peer)->ibp_nid), \ | |
270f0c31 | 650 | atomic_read(&(peer)->ibp_refcount)); \ |
d7e09d03 PT |
651 | atomic_inc(&(peer)->ibp_refcount); \ |
652 | } while (0) | |
653 | ||
654 | #define kiblnd_peer_decref(peer) \ | |
655 | do { \ | |
656 | CDEBUG(D_NET, "peer[%p] -> %s (%d)--\n", \ | |
657 | (peer), libcfs_nid2str((peer)->ibp_nid), \ | |
270f0c31 | 658 | atomic_read(&(peer)->ibp_refcount)); \ |
d7e09d03 PT |
659 | LASSERT_ATOMIC_POS(&(peer)->ibp_refcount); \ |
660 | if (atomic_dec_and_test(&(peer)->ibp_refcount)) \ | |
661 | kiblnd_destroy_peer(peer); \ | |
662 | } while (0) | |
663 | ||
664 | static inline struct list_head * | |
270f0c31 | 665 | kiblnd_nid2peerlist(lnet_nid_t nid) |
d7e09d03 PT |
666 | { |
667 | unsigned int hash = | |
668 | ((unsigned int)nid) % kiblnd_data.kib_peer_hash_size; | |
669 | ||
8a1d7b09 | 670 | return &kiblnd_data.kib_peers[hash]; |
d7e09d03 PT |
671 | } |
672 | ||
673 | static inline int | |
270f0c31 | 674 | kiblnd_peer_active(kib_peer_t *peer) |
d7e09d03 PT |
675 | { |
676 | /* Am I in the peer hash table? */ | |
8a1d7b09 | 677 | return !list_empty(&peer->ibp_list); |
d7e09d03 PT |
678 | } |
679 | ||
680 | static inline kib_conn_t * | |
270f0c31 | 681 | kiblnd_get_conn_locked(kib_peer_t *peer) |
d7e09d03 | 682 | { |
270f0c31 | 683 | LASSERT(!list_empty(&peer->ibp_conns)); |
d7e09d03 PT |
684 | |
685 | /* just return the first connection */ | |
686 | return list_entry(peer->ibp_conns.next, kib_conn_t, ibc_list); | |
687 | } | |
688 | ||
689 | static inline int | |
690 | kiblnd_send_keepalive(kib_conn_t *conn) | |
691 | { | |
692 | return (*kiblnd_tunables.kib_keepalive > 0) && | |
693 | cfs_time_after(jiffies, conn->ibc_last_send + | |
27d81ace JY |
694 | msecs_to_jiffies(*kiblnd_tunables.kib_keepalive * |
695 | MSEC_PER_SEC)); | |
d7e09d03 PT |
696 | } |
697 | ||
698 | static inline int | |
699 | kiblnd_need_noop(kib_conn_t *conn) | |
700 | { | |
270f0c31 | 701 | LASSERT(conn->ibc_state >= IBLND_CONN_ESTABLISHED); |
d7e09d03 PT |
702 | |
703 | if (conn->ibc_outstanding_credits < | |
704 | IBLND_CREDITS_HIGHWATER(conn->ibc_version) && | |
705 | !kiblnd_send_keepalive(conn)) | |
706 | return 0; /* No need to send NOOP */ | |
707 | ||
708 | if (IBLND_OOB_CAPABLE(conn->ibc_version)) { | |
709 | if (!list_empty(&conn->ibc_tx_queue_nocred)) | |
710 | return 0; /* NOOP can be piggybacked */ | |
711 | ||
712 | /* No tx to piggyback NOOP onto or no credit to send a tx */ | |
713 | return (list_empty(&conn->ibc_tx_queue) || | |
5fd88337 | 714 | !conn->ibc_credits); |
d7e09d03 PT |
715 | } |
716 | ||
717 | if (!list_empty(&conn->ibc_tx_noops) || /* NOOP already queued */ | |
718 | !list_empty(&conn->ibc_tx_queue_nocred) || /* piggyback NOOP */ | |
5fd88337 | 719 | !conn->ibc_credits) /* no credit */ |
d7e09d03 PT |
720 | return 0; |
721 | ||
722 | if (conn->ibc_credits == 1 && /* last credit reserved for */ | |
5fd88337 | 723 | !conn->ibc_outstanding_credits) /* giving back credits */ |
d7e09d03 PT |
724 | return 0; |
725 | ||
726 | /* No tx to piggyback NOOP onto or no credit to send a tx */ | |
727 | return (list_empty(&conn->ibc_tx_queue) || conn->ibc_credits == 1); | |
728 | } | |
729 | ||
730 | static inline void | |
731 | kiblnd_abort_receives(kib_conn_t *conn) | |
732 | { | |
733 | ib_modify_qp(conn->ibc_cmid->qp, | |
734 | &kiblnd_data.kib_error_qpa, IB_QP_STATE); | |
735 | } | |
736 | ||
737 | static inline const char * | |
270f0c31 | 738 | kiblnd_queue2str(kib_conn_t *conn, struct list_head *q) |
d7e09d03 PT |
739 | { |
740 | if (q == &conn->ibc_tx_queue) | |
741 | return "tx_queue"; | |
742 | ||
743 | if (q == &conn->ibc_tx_queue_rsrvd) | |
744 | return "tx_queue_rsrvd"; | |
745 | ||
746 | if (q == &conn->ibc_tx_queue_nocred) | |
747 | return "tx_queue_nocred"; | |
748 | ||
749 | if (q == &conn->ibc_active_txs) | |
750 | return "active_txs"; | |
751 | ||
752 | LBUG(); | |
753 | return NULL; | |
754 | } | |
755 | ||
d0bed035 JB |
756 | /* CAVEAT EMPTOR: We rely on descriptor alignment to allow us to use the */ |
757 | /* lowest bits of the work request id to stash the work item type. */ | |
d7e09d03 PT |
758 | |
759 | #define IBLND_WID_TX 0 | |
760 | #define IBLND_WID_RDMA 1 | |
761 | #define IBLND_WID_RX 2 | |
762 | #define IBLND_WID_MASK 3UL | |
763 | ||
764 | static inline __u64 | |
270f0c31 | 765 | kiblnd_ptr2wreqid(void *ptr, int type) |
d7e09d03 PT |
766 | { |
767 | unsigned long lptr = (unsigned long)ptr; | |
768 | ||
5fd88337 JS |
769 | LASSERT(!(lptr & IBLND_WID_MASK)); |
770 | LASSERT(!(type & ~IBLND_WID_MASK)); | |
d7e09d03 PT |
771 | return (__u64)(lptr | type); |
772 | } | |
773 | ||
774 | static inline void * | |
270f0c31 | 775 | kiblnd_wreqid2ptr(__u64 wreqid) |
d7e09d03 PT |
776 | { |
777 | return (void *)(((unsigned long)wreqid) & ~IBLND_WID_MASK); | |
778 | } | |
779 | ||
780 | static inline int | |
270f0c31 | 781 | kiblnd_wreqid2type(__u64 wreqid) |
d7e09d03 | 782 | { |
8a1d7b09 | 783 | return wreqid & IBLND_WID_MASK; |
d7e09d03 PT |
784 | } |
785 | ||
786 | static inline void | |
270f0c31 | 787 | kiblnd_set_conn_state(kib_conn_t *conn, int state) |
d7e09d03 PT |
788 | { |
789 | conn->ibc_state = state; | |
790 | mb(); | |
791 | } | |
792 | ||
793 | static inline void | |
270f0c31 | 794 | kiblnd_init_msg(kib_msg_t *msg, int type, int body_nob) |
d7e09d03 PT |
795 | { |
796 | msg->ibm_type = type; | |
797 | msg->ibm_nob = offsetof(kib_msg_t, ibm_u) + body_nob; | |
798 | } | |
799 | ||
800 | static inline int | |
270f0c31 | 801 | kiblnd_rd_size(kib_rdma_desc_t *rd) |
d7e09d03 PT |
802 | { |
803 | int i; | |
804 | int size; | |
805 | ||
806 | for (i = size = 0; i < rd->rd_nfrags; i++) | |
807 | size += rd->rd_frags[i].rf_nob; | |
808 | ||
809 | return size; | |
810 | } | |
811 | ||
812 | static inline __u64 | |
813 | kiblnd_rd_frag_addr(kib_rdma_desc_t *rd, int index) | |
814 | { | |
815 | return rd->rd_frags[index].rf_addr; | |
816 | } | |
817 | ||
818 | static inline __u32 | |
819 | kiblnd_rd_frag_size(kib_rdma_desc_t *rd, int index) | |
820 | { | |
821 | return rd->rd_frags[index].rf_nob; | |
822 | } | |
823 | ||
824 | static inline __u32 | |
825 | kiblnd_rd_frag_key(kib_rdma_desc_t *rd, int index) | |
826 | { | |
827 | return rd->rd_key; | |
828 | } | |
829 | ||
830 | static inline int | |
831 | kiblnd_rd_consume_frag(kib_rdma_desc_t *rd, int index, __u32 nob) | |
832 | { | |
833 | if (nob < rd->rd_frags[index].rf_nob) { | |
834 | rd->rd_frags[index].rf_addr += nob; | |
835 | rd->rd_frags[index].rf_nob -= nob; | |
836 | } else { | |
83b912c6 | 837 | index++; |
d7e09d03 PT |
838 | } |
839 | ||
840 | return index; | |
841 | } | |
842 | ||
843 | static inline int | |
844 | kiblnd_rd_msg_size(kib_rdma_desc_t *rd, int msgtype, int n) | |
845 | { | |
270f0c31 MBD |
846 | LASSERT(msgtype == IBLND_MSG_GET_REQ || |
847 | msgtype == IBLND_MSG_PUT_ACK); | |
d7e09d03 PT |
848 | |
849 | return msgtype == IBLND_MSG_GET_REQ ? | |
850 | offsetof(kib_get_msg_t, ibgm_rd.rd_frags[n]) : | |
851 | offsetof(kib_putack_msg_t, ibpam_rd.rd_frags[n]); | |
852 | } | |
853 | ||
d7e09d03 PT |
854 | static inline __u64 |
855 | kiblnd_dma_mapping_error(struct ib_device *dev, u64 dma_addr) | |
856 | { | |
857 | return ib_dma_mapping_error(dev, dma_addr); | |
858 | } | |
859 | ||
860 | static inline __u64 kiblnd_dma_map_single(struct ib_device *dev, | |
861 | void *msg, size_t size, | |
862 | enum dma_data_direction direction) | |
863 | { | |
864 | return ib_dma_map_single(dev, msg, size, direction); | |
865 | } | |
866 | ||
867 | static inline void kiblnd_dma_unmap_single(struct ib_device *dev, | |
868 | __u64 addr, size_t size, | |
869 | enum dma_data_direction direction) | |
870 | { | |
871 | ib_dma_unmap_single(dev, addr, size, direction); | |
872 | } | |
873 | ||
874 | #define KIBLND_UNMAP_ADDR_SET(p, m, a) do {} while (0) | |
875 | #define KIBLND_UNMAP_ADDR(p, m, a) (a) | |
876 | ||
877 | static inline int kiblnd_dma_map_sg(struct ib_device *dev, | |
878 | struct scatterlist *sg, int nents, | |
879 | enum dma_data_direction direction) | |
880 | { | |
881 | return ib_dma_map_sg(dev, sg, nents, direction); | |
882 | } | |
883 | ||
884 | static inline void kiblnd_dma_unmap_sg(struct ib_device *dev, | |
885 | struct scatterlist *sg, int nents, | |
886 | enum dma_data_direction direction) | |
887 | { | |
888 | ib_dma_unmap_sg(dev, sg, nents, direction); | |
889 | } | |
890 | ||
891 | static inline __u64 kiblnd_sg_dma_address(struct ib_device *dev, | |
892 | struct scatterlist *sg) | |
893 | { | |
894 | return ib_sg_dma_address(dev, sg); | |
895 | } | |
896 | ||
897 | static inline unsigned int kiblnd_sg_dma_len(struct ib_device *dev, | |
898 | struct scatterlist *sg) | |
899 | { | |
900 | return ib_sg_dma_len(dev, sg); | |
901 | } | |
902 | ||
d0bed035 JB |
903 | /* XXX We use KIBLND_CONN_PARAM(e) as writable buffer, it's not strictly */ |
904 | /* right because OFED1.2 defines it as const, to use it we have to add */ | |
905 | /* (void *) cast to overcome "const" */ | |
d7e09d03 | 906 | |
ec3d17c0 MS |
907 | #define KIBLND_CONN_PARAM(e) ((e)->param.conn.private_data) |
908 | #define KIBLND_CONN_PARAM_LEN(e) ((e)->param.conn.private_data_len) | |
d7e09d03 | 909 | |
d7e09d03 PT |
910 | struct ib_mr *kiblnd_find_rd_dma_mr(kib_hca_dev_t *hdev, |
911 | kib_rdma_desc_t *rd); | |
912 | struct ib_mr *kiblnd_find_dma_mr(kib_hca_dev_t *hdev, | |
913 | __u64 addr, __u64 size); | |
914 | void kiblnd_map_rx_descs(kib_conn_t *conn); | |
915 | void kiblnd_unmap_rx_descs(kib_conn_t *conn); | |
d7e09d03 PT |
916 | void kiblnd_pool_free_node(kib_pool_t *pool, struct list_head *node); |
917 | struct list_head *kiblnd_pool_alloc_node(kib_poolset_t *ps); | |
918 | ||
919 | int kiblnd_fmr_pool_map(kib_fmr_poolset_t *fps, __u64 *pages, | |
920 | int npages, __u64 iov, kib_fmr_t *fmr); | |
921 | void kiblnd_fmr_pool_unmap(kib_fmr_t *fmr, int status); | |
922 | ||
d7e09d03 PT |
923 | int kiblnd_tunables_init(void); |
924 | void kiblnd_tunables_fini(void); | |
925 | ||
270f0c31 | 926 | int kiblnd_connd(void *arg); |
d7e09d03 PT |
927 | int kiblnd_scheduler(void *arg); |
928 | int kiblnd_thread_start(int (*fn)(void *arg), void *arg, char *name); | |
270f0c31 | 929 | int kiblnd_failover_thread(void *arg); |
d7e09d03 PT |
930 | |
931 | int kiblnd_alloc_pages(kib_pages_t **pp, int cpt, int npages); | |
d7e09d03 PT |
932 | |
933 | int kiblnd_cm_callback(struct rdma_cm_id *cmid, | |
934 | struct rdma_cm_event *event); | |
935 | int kiblnd_translate_mtu(int value); | |
936 | ||
937 | int kiblnd_dev_failover(kib_dev_t *dev); | |
270f0c31 MBD |
938 | int kiblnd_create_peer(lnet_ni_t *ni, kib_peer_t **peerp, lnet_nid_t nid); |
939 | void kiblnd_destroy_peer(kib_peer_t *peer); | |
940 | void kiblnd_destroy_dev(kib_dev_t *dev); | |
941 | void kiblnd_unlink_peer_locked(kib_peer_t *peer); | |
942 | void kiblnd_peer_alive(kib_peer_t *peer); | |
943 | kib_peer_t *kiblnd_find_peer_locked(lnet_nid_t nid); | |
944 | void kiblnd_peer_connect_failed(kib_peer_t *peer, int active, int error); | |
945 | int kiblnd_close_stale_conns_locked(kib_peer_t *peer, | |
c314c319 | 946 | int version, __u64 incarnation); |
270f0c31 | 947 | int kiblnd_close_peer_conns_locked(kib_peer_t *peer, int why); |
d7e09d03 PT |
948 | |
949 | void kiblnd_connreq_done(kib_conn_t *conn, int status); | |
270f0c31 | 950 | kib_conn_t *kiblnd_create_conn(kib_peer_t *peer, struct rdma_cm_id *cmid, |
c314c319 | 951 | int state, int version); |
270f0c31 MBD |
952 | void kiblnd_destroy_conn(kib_conn_t *conn); |
953 | void kiblnd_close_conn(kib_conn_t *conn, int error); | |
954 | void kiblnd_close_conn_locked(kib_conn_t *conn, int error); | |
d7e09d03 | 955 | |
270f0c31 | 956 | int kiblnd_init_rdma(kib_conn_t *conn, kib_tx_t *tx, int type, |
c314c319 | 957 | int nob, kib_rdma_desc_t *dstrd, __u64 dstcookie); |
d7e09d03 | 958 | |
270f0c31 MBD |
959 | void kiblnd_launch_tx(lnet_ni_t *ni, kib_tx_t *tx, lnet_nid_t nid); |
960 | void kiblnd_queue_tx_locked(kib_tx_t *tx, kib_conn_t *conn); | |
961 | void kiblnd_queue_tx(kib_tx_t *tx, kib_conn_t *conn); | |
962 | void kiblnd_init_tx_msg(lnet_ni_t *ni, kib_tx_t *tx, int type, int body_nob); | |
963 | void kiblnd_txlist_done(lnet_ni_t *ni, struct list_head *txlist, | |
c314c319 | 964 | int status); |
b31e64c4 | 965 | void kiblnd_check_sends(kib_conn_t *conn); |
d7e09d03 PT |
966 | |
967 | void kiblnd_qp_event(struct ib_event *event, void *arg); | |
968 | void kiblnd_cq_event(struct ib_event *event, void *arg); | |
969 | void kiblnd_cq_completion(struct ib_cq *cq, void *arg); | |
970 | ||
270f0c31 | 971 | void kiblnd_pack_msg(lnet_ni_t *ni, kib_msg_t *msg, int version, |
c314c319 | 972 | int credits, lnet_nid_t dstnid, __u64 dststamp); |
d7e09d03 | 973 | int kiblnd_unpack_msg(kib_msg_t *msg, int nob); |
270f0c31 | 974 | int kiblnd_post_rx(kib_rx_t *rx, int credit); |
d7e09d03 PT |
975 | |
976 | int kiblnd_send(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg); | |
977 | int kiblnd_recv(lnet_ni_t *ni, void *private, lnet_msg_t *lntmsg, int delayed, | |
f351bad2 | 978 | unsigned int niov, struct kvec *iov, lnet_kiov_t *kiov, |
d7e09d03 | 979 | unsigned int offset, unsigned int mlen, unsigned int rlen); |