1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * Shared Memory Communications over RDMA (SMC-R) and RoCE |
4 | * |
5 | * Definitions for SMC Connections, Link Groups and Links |
6 | * |
7 | * Copyright IBM Corp. 2016 |
8 | * |
9 | * Author(s): Ursula Braun <ubraun@linux.vnet.ibm.com> |
10 | */ |
11 | |
12 | #ifndef _SMC_CORE_H |
13 | #define _SMC_CORE_H |
14 | |
15 | #include <linux/atomic.h> |
16 | #include <linux/smc.h> |
17 | #include <linux/pci.h> |
18 | #include <rdma/ib_verbs.h> |
19 | #include <net/genetlink.h> |
20 | |
21 | #include "smc.h" |
22 | #include "smc_ib.h" |
23 | |
24 | #define SMC_RMBS_PER_LGR_MAX 255 /* max. # of RMBs per link group */ |
25 | #define SMC_CONN_PER_LGR_MIN 16 /* min. # of connections per link group */ |
26 | #define SMC_CONN_PER_LGR_MAX 255 /* max. # of connections per link group, |
27 | * also is the default value for SMC-R v1 and v2.0 |
28 | */ |
29 | #define SMC_CONN_PER_LGR_PREFER 255 /* Preferred connections per link group used for |
30 | * SMC-R v2.1 and later negotiation, vendors or |
31 | * distrubutions may modify it to a value between |
32 | * 16-255 as needed. |
33 | */ |
34 | |
35 | struct smc_lgr_list { /* list of link group definition */ |
36 | struct list_head list; |
37 | spinlock_t lock; /* protects list of link groups */ |
38 | u32 num; /* unique link group number */ |
39 | }; |
40 | |
41 | enum smc_lgr_role { /* possible roles of a link group */ |
42 | SMC_CLNT, /* client */ |
43 | SMC_SERV /* server */ |
44 | }; |
45 | |
46 | enum smc_link_state { /* possible states of a link */ |
47 | SMC_LNK_UNUSED, /* link is unused */ |
48 | SMC_LNK_INACTIVE, /* link is inactive */ |
49 | SMC_LNK_ACTIVATING, /* link is being activated */ |
50 | SMC_LNK_ACTIVE, /* link is active */ |
51 | }; |
52 | |
53 | #define SMC_WR_BUF_SIZE 48 /* size of work request buffer */ |
54 | #define SMC_WR_BUF_V2_SIZE 8192 /* size of v2 work request buffer */ |
55 | |
56 | struct smc_wr_buf { |
57 | u8 raw[SMC_WR_BUF_SIZE]; |
58 | }; |
59 | |
60 | struct smc_wr_v2_buf { |
61 | u8 raw[SMC_WR_BUF_V2_SIZE]; |
62 | }; |
63 | |
64 | #define SMC_WR_REG_MR_WAIT_TIME (5 * HZ)/* wait time for ib_wr_reg_mr result */ |
65 | |
66 | enum smc_wr_reg_state { |
67 | POSTED, /* ib_wr_reg_mr request posted */ |
68 | CONFIRMED, /* ib_wr_reg_mr response: successful */ |
69 | FAILED /* ib_wr_reg_mr response: failure */ |
70 | }; |
71 | |
72 | struct smc_rdma_sge { /* sges for RDMA writes */ |
73 | struct ib_sge wr_tx_rdma_sge[SMC_IB_MAX_SEND_SGE]; |
74 | }; |
75 | |
76 | #define SMC_MAX_RDMA_WRITES 2 /* max. # of RDMA writes per |
77 | * message send |
78 | */ |
79 | |
80 | struct smc_rdma_sges { /* sges per message send */ |
81 | struct smc_rdma_sge tx_rdma_sge[SMC_MAX_RDMA_WRITES]; |
82 | }; |
83 | |
84 | struct smc_rdma_wr { /* work requests per message |
85 | * send |
86 | */ |
87 | struct ib_rdma_wr wr_tx_rdma[SMC_MAX_RDMA_WRITES]; |
88 | }; |
89 | |
90 | #define SMC_LGR_ID_SIZE 4 |
91 | |
92 | struct smc_link { |
93 | struct smc_ib_device *smcibdev; /* ib-device */ |
94 | u8 ibport; /* port - values 1 | 2 */ |
95 | struct ib_pd *roce_pd; /* IB protection domain, |
96 | * unique for every RoCE QP |
97 | */ |
98 | struct ib_qp *roce_qp; /* IB queue pair */ |
99 | struct ib_qp_attr qp_attr; /* IB queue pair attributes */ |
100 | |
101 | struct smc_wr_buf *wr_tx_bufs; /* WR send payload buffers */ |
102 | struct ib_send_wr *wr_tx_ibs; /* WR send meta data */ |
103 | struct ib_sge *wr_tx_sges; /* WR send gather meta data */ |
104 | struct smc_rdma_sges *wr_tx_rdma_sges;/*RDMA WRITE gather meta data*/ |
105 | struct smc_rdma_wr *wr_tx_rdmas; /* WR RDMA WRITE */ |
106 | struct smc_wr_tx_pend *wr_tx_pends; /* WR send waiting for CQE */ |
107 | struct completion *wr_tx_compl; /* WR send CQE completion */ |
108 | /* above four vectors have wr_tx_cnt elements and use the same index */ |
109 | struct ib_send_wr *wr_tx_v2_ib; /* WR send v2 meta data */ |
110 | struct ib_sge *wr_tx_v2_sge; /* WR send v2 gather meta data*/ |
111 | struct smc_wr_tx_pend *wr_tx_v2_pend; /* WR send v2 waiting for CQE */ |
112 | dma_addr_t wr_tx_dma_addr; /* DMA address of wr_tx_bufs */ |
113 | dma_addr_t wr_tx_v2_dma_addr; /* DMA address of v2 tx buf*/ |
114 | atomic_long_t wr_tx_id; /* seq # of last sent WR */ |
115 | unsigned long *wr_tx_mask; /* bit mask of used indexes */ |
116 | u32 wr_tx_cnt; /* number of WR send buffers */ |
117 | wait_queue_head_t wr_tx_wait; /* wait for free WR send buf */ |
118 | struct { |
119 | struct percpu_ref wr_tx_refs; |
120 | } ____cacheline_aligned_in_smp; |
121 | struct completion tx_ref_comp; |
122 | |
123 | struct smc_wr_buf *wr_rx_bufs; /* WR recv payload buffers */ |
124 | struct ib_recv_wr *wr_rx_ibs; /* WR recv meta data */ |
125 | struct ib_sge *wr_rx_sges; /* WR recv scatter meta data */ |
126 | /* above three vectors have wr_rx_cnt elements and use the same index */ |
127 | dma_addr_t wr_rx_dma_addr; /* DMA address of wr_rx_bufs */ |
128 | dma_addr_t wr_rx_v2_dma_addr; /* DMA address of v2 rx buf*/ |
129 | u64 wr_rx_id; /* seq # of last recv WR */ |
130 | u64 wr_rx_id_compl; /* seq # of last completed WR */ |
131 | u32 wr_rx_cnt; /* number of WR recv buffers */ |
132 | unsigned long wr_rx_tstamp; /* jiffies when last buf rx */ |
133 | wait_queue_head_t wr_rx_empty_wait; /* wait for RQ empty */ |
134 | |
135 | struct ib_reg_wr wr_reg; /* WR register memory region */ |
136 | wait_queue_head_t wr_reg_wait; /* wait for wr_reg result */ |
137 | struct { |
138 | struct percpu_ref wr_reg_refs; |
139 | } ____cacheline_aligned_in_smp; |
140 | struct completion reg_ref_comp; |
141 | enum smc_wr_reg_state wr_reg_state; /* state of wr_reg request */ |
142 | |
143 | u8 gid[SMC_GID_SIZE];/* gid matching used vlan id*/ |
144 | u8 sgid_index; /* gid index for vlan id */ |
145 | u32 peer_qpn; /* QP number of peer */ |
146 | enum ib_mtu path_mtu; /* used mtu */ |
147 | enum ib_mtu peer_mtu; /* mtu size of peer */ |
148 | u32 psn_initial; /* QP tx initial packet seqno */ |
149 | u32 peer_psn; /* QP rx initial packet seqno */ |
150 | u8 peer_mac[ETH_ALEN]; /* = gid[8:10||13:15] */ |
151 | u8 peer_gid[SMC_GID_SIZE]; /* gid of peer*/ |
152 | u8 link_id; /* unique # within link group */ |
153 | u8 link_uid[SMC_LGR_ID_SIZE]; /* unique lnk id */ |
154 | u8 peer_link_uid[SMC_LGR_ID_SIZE]; /* peer uid */ |
155 | u8 link_idx; /* index in lgr link array */ |
156 | u8 link_is_asym; /* is link asymmetric? */ |
157 | u8 clearing : 1; /* link is being cleared */ |
158 | refcount_t refcnt; /* link reference count */ |
159 | struct smc_link_group *lgr; /* parent link group */ |
160 | struct work_struct link_down_wrk; /* wrk to bring link down */ |
161 | char ibname[IB_DEVICE_NAME_MAX]; /* ib device name */ |
162 | int ndev_ifidx; /* network device ifindex */ |
163 | |
164 | enum smc_link_state state; /* state of link */ |
165 | struct delayed_work llc_testlink_wrk; /* testlink worker */ |
166 | struct completion llc_testlink_resp; /* wait for rx of testlink */ |
167 | int llc_testlink_time; /* testlink interval */ |
168 | atomic_t conn_cnt; /* connections on this link */ |
169 | }; |
170 | |
171 | /* For now we just allow one parallel link per link group. The SMC protocol |
172 | * allows more (up to 8). |
173 | */ |
174 | #define SMC_LINKS_PER_LGR_MAX 3 |
175 | #define SMC_SINGLE_LINK 0 |
176 | #define SMC_LINKS_ADD_LNK_MIN 1 /* min. # of links per link group */ |
177 | #define SMC_LINKS_ADD_LNK_MAX 2 /* max. # of links per link group, also is the |
178 | * default value for smc-r v1.0 and v2.0 |
179 | */ |
180 | #define SMC_LINKS_PER_LGR_MAX_PREFER 2 /* Preferred max links per link group used for |
181 | * SMC-R v2.1 and later negotiation, vendors or |
182 | * distrubutions may modify it to a value between |
183 | * 1-2 as needed. |
184 | */ |
185 | |
186 | /* tx/rx buffer list element for sndbufs list and rmbs list of a lgr */ |
187 | struct smc_buf_desc { |
188 | struct list_head list; |
189 | void *cpu_addr; /* virtual address of buffer */ |
190 | struct page *pages; |
191 | int len; /* length of buffer */ |
192 | u32 used; /* currently used / unused */ |
193 | union { |
194 | struct { /* SMC-R */ |
195 | struct sg_table sgt[SMC_LINKS_PER_LGR_MAX]; |
196 | /* virtual buffer */ |
197 | struct ib_mr *mr[SMC_LINKS_PER_LGR_MAX]; |
198 | /* memory region: for rmb and |
199 | * vzalloced sndbuf |
200 | * incl. rkey provided to peer |
201 | * and lkey provided to local |
202 | */ |
203 | u32 order; /* allocation order */ |
204 | |
205 | u8 is_conf_rkey; |
206 | /* confirm_rkey done */ |
207 | u8 is_reg_mr[SMC_LINKS_PER_LGR_MAX]; |
208 | /* mem region registered */ |
209 | u8 is_map_ib[SMC_LINKS_PER_LGR_MAX]; |
210 | /* mem region mapped to lnk */ |
211 | u8 is_dma_need_sync; |
212 | u8 is_reg_err; |
213 | /* buffer registration err */ |
214 | u8 is_vm; |
215 | /* virtually contiguous */ |
216 | }; |
217 | struct { /* SMC-D */ |
218 | unsigned short sba_idx; |
219 | /* SBA index number */ |
220 | u64 token; |
221 | /* DMB token number */ |
222 | dma_addr_t dma_addr; |
223 | /* DMA address */ |
224 | }; |
225 | }; |
226 | }; |
227 | |
228 | struct smc_rtoken { /* address/key of remote RMB */ |
229 | u64 dma_addr; |
230 | u32 rkey; |
231 | }; |
232 | |
233 | #define SMC_BUF_MIN_SIZE 16384 /* minimum size of an RMB */ |
234 | #define SMC_RMBE_SIZES 16 /* number of distinct RMBE sizes */ |
235 | /* theoretically, the RFC states that largest size would be 512K, |
236 | * i.e. compressed 5 and thus 6 sizes (0..5), despite |
237 | * struct smc_clc_msg_accept_confirm.rmbe_size being a 4 bit value (0..15) |
238 | */ |
239 | |
240 | struct smcd_dev; |
241 | |
242 | enum smc_lgr_type { /* redundancy state of lgr */ |
243 | SMC_LGR_NONE, /* no active links, lgr to be deleted */ |
244 | SMC_LGR_SINGLE, /* 1 active RNIC on each peer */ |
245 | SMC_LGR_SYMMETRIC, /* 2 active RNICs on each peer */ |
246 | SMC_LGR_ASYMMETRIC_PEER, /* local has 2, peer 1 active RNICs */ |
247 | SMC_LGR_ASYMMETRIC_LOCAL, /* local has 1, peer 2 active RNICs */ |
248 | }; |
249 | |
250 | enum smcr_buf_type { /* types of SMC-R sndbufs and RMBs */ |
251 | SMCR_PHYS_CONT_BUFS = 0, |
252 | SMCR_VIRT_CONT_BUFS = 1, |
253 | SMCR_MIXED_BUFS = 2, |
254 | }; |
255 | |
256 | enum smc_llc_flowtype { |
257 | SMC_LLC_FLOW_NONE = 0, |
258 | SMC_LLC_FLOW_ADD_LINK = 2, |
259 | SMC_LLC_FLOW_DEL_LINK = 4, |
260 | SMC_LLC_FLOW_REQ_ADD_LINK = 5, |
261 | SMC_LLC_FLOW_RKEY = 6, |
262 | }; |
263 | |
264 | struct smc_llc_qentry; |
265 | |
266 | struct smc_llc_flow { |
267 | enum smc_llc_flowtype type; |
268 | struct smc_llc_qentry *qentry; |
269 | }; |
270 | |
271 | struct smc_link_group { |
272 | struct list_head list; |
273 | struct rb_root conns_all; /* connection tree */ |
274 | rwlock_t conns_lock; /* protects conns_all */ |
275 | unsigned int conns_num; /* current # of connections */ |
276 | unsigned short vlan_id; /* vlan id of link group */ |
277 | |
278 | struct list_head sndbufs[SMC_RMBE_SIZES];/* tx buffers */ |
279 | struct rw_semaphore sndbufs_lock; /* protects tx buffers */ |
280 | struct list_head rmbs[SMC_RMBE_SIZES]; /* rx buffers */ |
281 | struct rw_semaphore rmbs_lock; /* protects rx buffers */ |
282 | |
283 | u8 id[SMC_LGR_ID_SIZE]; /* unique lgr id */ |
284 | struct delayed_work free_work; /* delayed freeing of an lgr */ |
285 | struct work_struct terminate_work; /* abnormal lgr termination */ |
286 | struct workqueue_struct *tx_wq; /* wq for conn. tx workers */ |
287 | u8 sync_err : 1; /* lgr no longer fits to peer */ |
288 | u8 terminating : 1;/* lgr is terminating */ |
289 | u8 freeing : 1; /* lgr is being freed */ |
290 | |
291 | refcount_t refcnt; /* lgr reference count */ |
292 | bool is_smcd; /* SMC-R or SMC-D */ |
293 | u8 smc_version; |
294 | u8 negotiated_eid[SMC_MAX_EID_LEN]; |
295 | u8 peer_os; /* peer operating system */ |
296 | u8 peer_smc_release; |
297 | u8 peer_hostname[SMC_MAX_HOSTNAME_LEN]; |
298 | union { |
299 | struct { /* SMC-R */ |
300 | enum smc_lgr_role role; |
301 | /* client or server */ |
302 | struct smc_link lnk[SMC_LINKS_PER_LGR_MAX]; |
303 | /* smc link */ |
304 | struct smc_wr_v2_buf *wr_rx_buf_v2; |
305 | /* WR v2 recv payload buffer */ |
306 | struct smc_wr_v2_buf *wr_tx_buf_v2; |
307 | /* WR v2 send payload buffer */ |
308 | char peer_systemid[SMC_SYSTEMID_LEN]; |
309 | /* unique system_id of peer */ |
310 | struct smc_rtoken rtokens[SMC_RMBS_PER_LGR_MAX] |
311 | [SMC_LINKS_PER_LGR_MAX]; |
312 | /* remote addr/key pairs */ |
313 | DECLARE_BITMAP(rtokens_used_mask, SMC_RMBS_PER_LGR_MAX); |
314 | /* used rtoken elements */ |
315 | u8 next_link_id; |
316 | enum smc_lgr_type type; |
317 | enum smcr_buf_type buf_type; |
318 | /* redundancy state */ |
319 | u8 pnet_id[SMC_MAX_PNETID_LEN + 1]; |
320 | /* pnet id of this lgr */ |
321 | struct list_head llc_event_q; |
322 | /* queue for llc events */ |
323 | spinlock_t llc_event_q_lock; |
324 | /* protects llc_event_q */ |
325 | struct rw_semaphore llc_conf_mutex; |
326 | /* protects lgr reconfig. */ |
327 | struct work_struct llc_add_link_work; |
328 | struct work_struct llc_del_link_work; |
329 | struct work_struct llc_event_work; |
330 | /* llc event worker */ |
331 | wait_queue_head_t llc_flow_waiter; |
332 | /* w4 next llc event */ |
333 | wait_queue_head_t llc_msg_waiter; |
334 | /* w4 next llc msg */ |
335 | struct smc_llc_flow llc_flow_lcl; |
336 | /* llc local control field */ |
337 | struct smc_llc_flow llc_flow_rmt; |
338 | /* llc remote control field */ |
339 | struct smc_llc_qentry *delayed_event; |
340 | /* arrived when flow active */ |
341 | spinlock_t llc_flow_lock; |
342 | /* protects llc flow */ |
343 | int llc_testlink_time; |
344 | /* link keep alive time */ |
345 | u32 llc_termination_rsn; |
346 | /* rsn code for termination */ |
347 | u8 nexthop_mac[ETH_ALEN]; |
348 | u8 uses_gateway; |
349 | __be32 saddr; |
350 | /* net namespace */ |
351 | struct net *net; |
352 | u8 max_conns; |
353 | /* max conn can be assigned to lgr */ |
354 | u8 max_links; |
355 | /* max links can be added in lgr */ |
356 | }; |
357 | struct { /* SMC-D */ |
358 | u64 peer_gid; |
359 | /* Peer GID (remote) */ |
360 | struct smcd_dev *smcd; |
361 | /* ISM device for VLAN reg. */ |
362 | u8 peer_shutdown : 1; |
363 | /* peer triggered shutdownn */ |
364 | }; |
365 | }; |
366 | }; |
367 | |
368 | struct smc_clc_msg_local; |
369 | |
370 | #define GID_LIST_SIZE 2 |
371 | |
372 | struct smc_gidlist { |
373 | u8 len; |
374 | u8 list[GID_LIST_SIZE][SMC_GID_SIZE]; |
375 | }; |
376 | |
377 | struct smc_init_info_smcrv2 { |
378 | /* Input fields */ |
379 | __be32 saddr; |
380 | struct sock *clc_sk; |
381 | __be32 daddr; |
382 | |
383 | /* Output fields when saddr is set */ |
384 | struct smc_ib_device *ib_dev_v2; |
385 | u8 ib_port_v2; |
386 | u8 ib_gid_v2[SMC_GID_SIZE]; |
387 | |
388 | /* Additional output fields when clc_sk and daddr is set as well */ |
389 | u8 uses_gateway; |
390 | u8 nexthop_mac[ETH_ALEN]; |
391 | |
392 | struct smc_gidlist gidlist; |
393 | }; |
394 | |
395 | struct smc_init_info { |
396 | u8 is_smcd; |
397 | u8 smc_type_v1; |
398 | u8 smc_type_v2; |
399 | u8 release_nr; |
400 | u8 max_conns; |
401 | u8 max_links; |
402 | u8 first_contact_peer; |
403 | u8 first_contact_local; |
404 | unsigned short vlan_id; |
405 | u32 rc; |
406 | u8 negotiated_eid[SMC_MAX_EID_LEN]; |
407 | /* SMC-R */ |
408 | u8 smcr_version; |
409 | u8 check_smcrv2; |
410 | u8 peer_gid[SMC_GID_SIZE]; |
411 | u8 peer_mac[ETH_ALEN]; |
412 | u8 peer_systemid[SMC_SYSTEMID_LEN]; |
413 | struct smc_ib_device *ib_dev; |
414 | u8 ib_gid[SMC_GID_SIZE]; |
415 | u8 ib_port; |
416 | u32 ib_clcqpn; |
417 | struct smc_init_info_smcrv2 smcrv2; |
418 | /* SMC-D */ |
419 | u64 ism_peer_gid[SMC_MAX_ISM_DEVS + 1]; |
420 | struct smcd_dev *ism_dev[SMC_MAX_ISM_DEVS + 1]; |
421 | u16 ism_chid[SMC_MAX_ISM_DEVS + 1]; |
422 | u8 ism_offered_cnt; /* # of ISM devices offered */ |
423 | u8 ism_selected; /* index of selected ISM dev*/ |
424 | u8 smcd_version; |
425 | }; |
426 | |
427 | /* Find the connection associated with the given alert token in the link group. |
428 | * To use rbtrees we have to implement our own search core. |
429 | * Requires @conns_lock |
430 | * @token alert token to search for |
431 | * @lgr link group to search in |
432 | * Returns connection associated with token if found, NULL otherwise. |
433 | */ |
434 | static inline struct smc_connection *smc_lgr_find_conn( |
435 | u32 token, struct smc_link_group *lgr) |
436 | { |
437 | struct smc_connection *res = NULL; |
438 | struct rb_node *node; |
439 | |
440 | node = lgr->conns_all.rb_node; |
441 | while (node) { |
442 | struct smc_connection *cur = rb_entry(node, |
443 | struct smc_connection, alert_node); |
444 | |
445 | if (cur->alert_token_local > token) { |
446 | node = node->rb_left; |
447 | } else { |
448 | if (cur->alert_token_local < token) { |
449 | node = node->rb_right; |
450 | } else { |
451 | res = cur; |
452 | break; |
453 | } |
454 | } |
455 | } |
456 | |
457 | return res; |
458 | } |
459 | |
460 | static inline bool smc_conn_lgr_valid(struct smc_connection *conn) |
461 | { |
462 | return conn->lgr && conn->alert_token_local; |
463 | } |
464 | |
465 | /* |
466 | * Returns true if the specified link is usable. |
467 | * |
468 | * usable means the link is ready to receive RDMA messages, map memory |
469 | * on the link, etc. This doesn't ensure we are able to send RDMA messages |
470 | * on this link, if sending RDMA messages is needed, use smc_link_sendable() |
471 | */ |
472 | static inline bool smc_link_usable(struct smc_link *lnk) |
473 | { |
474 | if (lnk->state == SMC_LNK_UNUSED || lnk->state == SMC_LNK_INACTIVE) |
475 | return false; |
476 | return true; |
477 | } |
478 | |
479 | /* |
480 | * Returns true if the specified link is ready to receive AND send RDMA |
481 | * messages. |
482 | * |
483 | * For the client side in first contact, the underlying QP may still in |
484 | * RESET or RTR when the link state is ACTIVATING, checks in smc_link_usable() |
485 | * is not strong enough. For those places that need to send any CDC or LLC |
486 | * messages, use smc_link_sendable(), otherwise, use smc_link_usable() instead |
487 | */ |
488 | static inline bool smc_link_sendable(struct smc_link *lnk) |
489 | { |
490 | return smc_link_usable(lnk) && |
491 | lnk->qp_attr.cur_qp_state == IB_QPS_RTS; |
492 | } |
493 | |
494 | static inline bool smc_link_active(struct smc_link *lnk) |
495 | { |
496 | return lnk->state == SMC_LNK_ACTIVE; |
497 | } |
498 | |
499 | static inline void smc_gid_be16_convert(__u8 *buf, u8 *gid_raw) |
500 | { |
501 | sprintf(buf, fmt: "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x" , |
502 | be16_to_cpu(((__be16 *)gid_raw)[0]), |
503 | be16_to_cpu(((__be16 *)gid_raw)[1]), |
504 | be16_to_cpu(((__be16 *)gid_raw)[2]), |
505 | be16_to_cpu(((__be16 *)gid_raw)[3]), |
506 | be16_to_cpu(((__be16 *)gid_raw)[4]), |
507 | be16_to_cpu(((__be16 *)gid_raw)[5]), |
508 | be16_to_cpu(((__be16 *)gid_raw)[6]), |
509 | be16_to_cpu(((__be16 *)gid_raw)[7])); |
510 | } |
511 | |
512 | struct smc_pci_dev { |
513 | __u32 pci_fid; |
514 | __u16 pci_pchid; |
515 | __u16 pci_vendor; |
516 | __u16 pci_device; |
517 | __u8 pci_id[SMC_PCI_ID_STR_LEN]; |
518 | }; |
519 | |
520 | static inline void smc_set_pci_values(struct pci_dev *pci_dev, |
521 | struct smc_pci_dev *smc_dev) |
522 | { |
523 | smc_dev->pci_vendor = pci_dev->vendor; |
524 | smc_dev->pci_device = pci_dev->device; |
525 | snprintf(buf: smc_dev->pci_id, size: sizeof(smc_dev->pci_id), fmt: "%s" , |
526 | pci_name(pdev: pci_dev)); |
527 | #if IS_ENABLED(CONFIG_S390) |
528 | { /* Set s390 specific PCI information */ |
529 | struct zpci_dev *zdev; |
530 | |
531 | zdev = to_zpci(pci_dev); |
532 | smc_dev->pci_fid = zdev->fid; |
533 | smc_dev->pci_pchid = zdev->pchid; |
534 | } |
535 | #endif |
536 | } |
537 | |
538 | struct smc_sock; |
539 | struct smc_clc_msg_accept_confirm; |
540 | |
541 | void smc_lgr_cleanup_early(struct smc_link_group *lgr); |
542 | void smc_lgr_terminate_sched(struct smc_link_group *lgr); |
543 | void smc_lgr_hold(struct smc_link_group *lgr); |
544 | void smc_lgr_put(struct smc_link_group *lgr); |
545 | void smcr_port_add(struct smc_ib_device *smcibdev, u8 ibport); |
546 | void smcr_port_err(struct smc_ib_device *smcibdev, u8 ibport); |
547 | void smc_smcd_terminate(struct smcd_dev *dev, u64 peer_gid, |
548 | unsigned short vlan); |
549 | void smc_smcd_terminate_all(struct smcd_dev *dev); |
550 | void smc_smcr_terminate_all(struct smc_ib_device *smcibdev); |
551 | int smc_buf_create(struct smc_sock *smc, bool is_smcd); |
552 | int smc_uncompress_bufsize(u8 compressed); |
553 | int smc_rmb_rtoken_handling(struct smc_connection *conn, struct smc_link *link, |
554 | struct smc_clc_msg_accept_confirm *clc); |
555 | int smc_rtoken_add(struct smc_link *lnk, __be64 nw_vaddr, __be32 nw_rkey); |
556 | int smc_rtoken_delete(struct smc_link *lnk, __be32 nw_rkey); |
557 | void smc_rtoken_set(struct smc_link_group *lgr, int link_idx, int link_idx_new, |
558 | __be32 nw_rkey_known, __be64 nw_vaddr, __be32 nw_rkey); |
559 | void smc_rtoken_set2(struct smc_link_group *lgr, int rtok_idx, int link_id, |
560 | __be64 nw_vaddr, __be32 nw_rkey); |
561 | void smc_sndbuf_sync_sg_for_device(struct smc_connection *conn); |
562 | void smc_rmb_sync_sg_for_cpu(struct smc_connection *conn); |
563 | int smc_vlan_by_tcpsk(struct socket *clcsock, struct smc_init_info *ini); |
564 | |
565 | void smc_conn_free(struct smc_connection *conn); |
566 | int smc_conn_create(struct smc_sock *smc, struct smc_init_info *ini); |
567 | int smc_core_init(void); |
568 | void smc_core_exit(void); |
569 | |
570 | int smcr_link_init(struct smc_link_group *lgr, struct smc_link *lnk, |
571 | u8 link_idx, struct smc_init_info *ini); |
572 | void smcr_link_clear(struct smc_link *lnk, bool log); |
573 | void smcr_link_hold(struct smc_link *lnk); |
574 | void smcr_link_put(struct smc_link *lnk); |
575 | void smc_switch_link_and_count(struct smc_connection *conn, |
576 | struct smc_link *to_lnk); |
577 | int smcr_buf_map_lgr(struct smc_link *lnk); |
578 | int smcr_buf_reg_lgr(struct smc_link *lnk); |
579 | void smcr_lgr_set_type(struct smc_link_group *lgr, enum smc_lgr_type new_type); |
580 | void smcr_lgr_set_type_asym(struct smc_link_group *lgr, |
581 | enum smc_lgr_type new_type, int asym_lnk_idx); |
582 | int smcr_link_reg_buf(struct smc_link *link, struct smc_buf_desc *rmb_desc); |
583 | struct smc_link *smc_switch_conns(struct smc_link_group *lgr, |
584 | struct smc_link *from_lnk, bool is_dev_err); |
585 | void smcr_link_down_cond(struct smc_link *lnk); |
586 | void smcr_link_down_cond_sched(struct smc_link *lnk); |
587 | int smc_nl_get_sys_info(struct sk_buff *skb, struct netlink_callback *cb); |
588 | int smcr_nl_get_lgr(struct sk_buff *skb, struct netlink_callback *cb); |
589 | int smcr_nl_get_link(struct sk_buff *skb, struct netlink_callback *cb); |
590 | int smcd_nl_get_lgr(struct sk_buff *skb, struct netlink_callback *cb); |
591 | |
592 | static inline struct smc_link_group *smc_get_lgr(struct smc_link *link) |
593 | { |
594 | return link->lgr; |
595 | } |
596 | #endif |
597 | |