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 | #include <net/smc.h> |
21 | |
22 | #include "smc.h" |
23 | #include "smc_ib.h" |
24 | #include "smc_clc.h" |
25 | |
26 | #define SMC_RMBS_PER_LGR_MAX 255 /* max. # of RMBs per link group */ |
27 | #define SMC_CONN_PER_LGR_MIN 16 /* min. # of connections per link group */ |
28 | #define SMC_CONN_PER_LGR_MAX 255 /* max. # of connections per link group, |
29 | * also is the default value for SMC-R v1 and v2.0 |
30 | */ |
31 | #define SMC_CONN_PER_LGR_PREFER 255 /* Preferred connections per link group used for |
32 | * SMC-R v2.1 and later negotiation, vendors or |
33 | * distrubutions may modify it to a value between |
34 | * 16-255 as needed. |
35 | */ |
36 | |
37 | struct smc_lgr_list { /* list of link group definition */ |
38 | struct list_head list; |
39 | spinlock_t lock; /* protects list of link groups */ |
40 | u32 num; /* unique link group number */ |
41 | }; |
42 | |
43 | enum smc_lgr_role { /* possible roles of a link group */ |
44 | SMC_CLNT, /* client */ |
45 | SMC_SERV /* server */ |
46 | }; |
47 | |
48 | enum smc_link_state { /* possible states of a link */ |
49 | SMC_LNK_UNUSED, /* link is unused */ |
50 | SMC_LNK_INACTIVE, /* link is inactive */ |
51 | SMC_LNK_ACTIVATING, /* link is being activated */ |
52 | SMC_LNK_ACTIVE, /* link is active */ |
53 | }; |
54 | |
55 | #define SMC_WR_BUF_SIZE 48 /* size of work request buffer */ |
56 | #define SMC_WR_BUF_V2_SIZE 8192 /* size of v2 work request buffer */ |
57 | |
58 | struct smc_wr_buf { |
59 | u8 raw[SMC_WR_BUF_SIZE]; |
60 | }; |
61 | |
62 | struct smc_wr_v2_buf { |
63 | u8 raw[SMC_WR_BUF_V2_SIZE]; |
64 | }; |
65 | |
66 | #define SMC_WR_REG_MR_WAIT_TIME (5 * HZ)/* wait time for ib_wr_reg_mr result */ |
67 | |
68 | enum smc_wr_reg_state { |
69 | POSTED, /* ib_wr_reg_mr request posted */ |
70 | CONFIRMED, /* ib_wr_reg_mr response: successful */ |
71 | FAILED /* ib_wr_reg_mr response: failure */ |
72 | }; |
73 | |
74 | struct smc_rdma_sge { /* sges for RDMA writes */ |
75 | struct ib_sge wr_tx_rdma_sge[SMC_IB_MAX_SEND_SGE]; |
76 | }; |
77 | |
78 | #define SMC_MAX_RDMA_WRITES 2 /* max. # of RDMA writes per |
79 | * message send |
80 | */ |
81 | |
82 | struct smc_rdma_sges { /* sges per message send */ |
83 | struct smc_rdma_sge tx_rdma_sge[SMC_MAX_RDMA_WRITES]; |
84 | }; |
85 | |
86 | struct smc_rdma_wr { /* work requests per message |
87 | * send |
88 | */ |
89 | struct ib_rdma_wr wr_tx_rdma[SMC_MAX_RDMA_WRITES]; |
90 | }; |
91 | |
92 | #define SMC_LGR_ID_SIZE 4 |
93 | |
94 | struct smc_link { |
95 | struct smc_ib_device *smcibdev; /* ib-device */ |
96 | u8 ibport; /* port - values 1 | 2 */ |
97 | struct ib_pd *roce_pd; /* IB protection domain, |
98 | * unique for every RoCE QP |
99 | */ |
100 | struct ib_qp *roce_qp; /* IB queue pair */ |
101 | struct ib_qp_attr qp_attr; /* IB queue pair attributes */ |
102 | |
103 | struct smc_wr_buf *wr_tx_bufs; /* WR send payload buffers */ |
104 | struct ib_send_wr *wr_tx_ibs; /* WR send meta data */ |
105 | struct ib_sge *wr_tx_sges; /* WR send gather meta data */ |
106 | struct smc_rdma_sges *wr_tx_rdma_sges;/*RDMA WRITE gather meta data*/ |
107 | struct smc_rdma_wr *wr_tx_rdmas; /* WR RDMA WRITE */ |
108 | struct smc_wr_tx_pend *wr_tx_pends; /* WR send waiting for CQE */ |
109 | struct completion *wr_tx_compl; /* WR send CQE completion */ |
110 | /* above four vectors have wr_tx_cnt elements and use the same index */ |
111 | struct ib_send_wr *wr_tx_v2_ib; /* WR send v2 meta data */ |
112 | struct ib_sge *wr_tx_v2_sge; /* WR send v2 gather meta data*/ |
113 | struct smc_wr_tx_pend *wr_tx_v2_pend; /* WR send v2 waiting for CQE */ |
114 | dma_addr_t wr_tx_dma_addr; /* DMA address of wr_tx_bufs */ |
115 | dma_addr_t wr_tx_v2_dma_addr; /* DMA address of v2 tx buf*/ |
116 | atomic_long_t wr_tx_id; /* seq # of last sent WR */ |
117 | unsigned long *wr_tx_mask; /* bit mask of used indexes */ |
118 | u32 wr_tx_cnt; /* number of WR send buffers */ |
119 | wait_queue_head_t wr_tx_wait; /* wait for free WR send buf */ |
120 | struct { |
121 | struct percpu_ref wr_tx_refs; |
122 | } ____cacheline_aligned_in_smp; |
123 | struct completion tx_ref_comp; |
124 | |
125 | struct smc_wr_buf *wr_rx_bufs; /* WR recv payload buffers */ |
126 | struct ib_recv_wr *wr_rx_ibs; /* WR recv meta data */ |
127 | struct ib_sge *wr_rx_sges; /* WR recv scatter meta data */ |
128 | /* above three vectors have wr_rx_cnt elements and use the same index */ |
129 | dma_addr_t wr_rx_dma_addr; /* DMA address of wr_rx_bufs */ |
130 | dma_addr_t wr_rx_v2_dma_addr; /* DMA address of v2 rx buf*/ |
131 | u64 wr_rx_id; /* seq # of last recv WR */ |
132 | u64 wr_rx_id_compl; /* seq # of last completed WR */ |
133 | u32 wr_rx_cnt; /* number of WR recv buffers */ |
134 | unsigned long wr_rx_tstamp; /* jiffies when last buf rx */ |
135 | wait_queue_head_t wr_rx_empty_wait; /* wait for RQ empty */ |
136 | |
137 | struct ib_reg_wr wr_reg; /* WR register memory region */ |
138 | wait_queue_head_t wr_reg_wait; /* wait for wr_reg result */ |
139 | struct { |
140 | struct percpu_ref wr_reg_refs; |
141 | } ____cacheline_aligned_in_smp; |
142 | struct completion reg_ref_comp; |
143 | enum smc_wr_reg_state wr_reg_state; /* state of wr_reg request */ |
144 | |
145 | u8 gid[SMC_GID_SIZE];/* gid matching used vlan id*/ |
146 | u8 sgid_index; /* gid index for vlan id */ |
147 | u32 peer_qpn; /* QP number of peer */ |
148 | enum ib_mtu path_mtu; /* used mtu */ |
149 | enum ib_mtu peer_mtu; /* mtu size of peer */ |
150 | u32 psn_initial; /* QP tx initial packet seqno */ |
151 | u32 peer_psn; /* QP rx initial packet seqno */ |
152 | u8 peer_mac[ETH_ALEN]; /* = gid[8:10||13:15] */ |
153 | u8 peer_gid[SMC_GID_SIZE]; /* gid of peer*/ |
154 | u8 link_id; /* unique # within link group */ |
155 | u8 link_uid[SMC_LGR_ID_SIZE]; /* unique lnk id */ |
156 | u8 peer_link_uid[SMC_LGR_ID_SIZE]; /* peer uid */ |
157 | u8 link_idx; /* index in lgr link array */ |
158 | u8 link_is_asym; /* is link asymmetric? */ |
159 | u8 clearing : 1; /* link is being cleared */ |
160 | refcount_t refcnt; /* link reference count */ |
161 | struct smc_link_group *lgr; /* parent link group */ |
162 | struct work_struct link_down_wrk; /* wrk to bring link down */ |
163 | char ibname[IB_DEVICE_NAME_MAX]; /* ib device name */ |
164 | int ndev_ifidx; /* network device ifindex */ |
165 | |
166 | enum smc_link_state state; /* state of link */ |
167 | struct delayed_work llc_testlink_wrk; /* testlink worker */ |
168 | struct completion llc_testlink_resp; /* wait for rx of testlink */ |
169 | int llc_testlink_time; /* testlink interval */ |
170 | atomic_t conn_cnt; /* connections on this link */ |
171 | }; |
172 | |
173 | /* For now we just allow one parallel link per link group. The SMC protocol |
174 | * allows more (up to 8). |
175 | */ |
176 | #define SMC_LINKS_PER_LGR_MAX 3 |
177 | #define SMC_SINGLE_LINK 0 |
178 | #define SMC_LINKS_ADD_LNK_MIN 1 /* min. # of links per link group */ |
179 | #define SMC_LINKS_ADD_LNK_MAX 2 /* max. # of links per link group, also is the |
180 | * default value for smc-r v1.0 and v2.0 |
181 | */ |
182 | #define SMC_LINKS_PER_LGR_MAX_PREFER 2 /* Preferred max links per link group used for |
183 | * SMC-R v2.1 and later negotiation, vendors or |
184 | * distrubutions may modify it to a value between |
185 | * 1-2 as needed. |
186 | */ |
187 | |
188 | /* tx/rx buffer list element for sndbufs list and rmbs list of a lgr */ |
189 | struct smc_buf_desc { |
190 | struct list_head list; |
191 | void *cpu_addr; /* virtual address of buffer */ |
192 | struct page *pages; |
193 | int len; /* length of buffer */ |
194 | u32 used; /* currently used / unused */ |
195 | union { |
196 | struct { /* SMC-R */ |
197 | struct sg_table sgt[SMC_LINKS_PER_LGR_MAX]; |
198 | /* virtual buffer */ |
199 | struct ib_mr *mr[SMC_LINKS_PER_LGR_MAX]; |
200 | /* memory region: for rmb and |
201 | * vzalloced sndbuf |
202 | * incl. rkey provided to peer |
203 | * and lkey provided to local |
204 | */ |
205 | u32 order; /* allocation order */ |
206 | |
207 | u8 is_conf_rkey; |
208 | /* confirm_rkey done */ |
209 | u8 is_reg_mr[SMC_LINKS_PER_LGR_MAX]; |
210 | /* mem region registered */ |
211 | u8 is_map_ib[SMC_LINKS_PER_LGR_MAX]; |
212 | /* mem region mapped to lnk */ |
213 | u8 is_dma_need_sync; |
214 | u8 is_reg_err; |
215 | /* buffer registration err */ |
216 | u8 is_vm; |
217 | /* virtually contiguous */ |
218 | }; |
219 | struct { /* SMC-D */ |
220 | unsigned short sba_idx; |
221 | /* SBA index number */ |
222 | u64 token; |
223 | /* DMB token number */ |
224 | dma_addr_t dma_addr; |
225 | /* DMA address */ |
226 | }; |
227 | }; |
228 | }; |
229 | |
230 | struct smc_rtoken { /* address/key of remote RMB */ |
231 | u64 dma_addr; |
232 | u32 rkey; |
233 | }; |
234 | |
235 | #define SMC_BUF_MIN_SIZE 16384 /* minimum size of an RMB */ |
236 | #define SMC_RMBE_SIZES 16 /* number of distinct RMBE sizes */ |
237 | /* theoretically, the RFC states that largest size would be 512K, |
238 | * i.e. compressed 5 and thus 6 sizes (0..5), despite |
239 | * struct smc_clc_msg_accept_confirm.rmbe_size being a 4 bit value (0..15) |
240 | */ |
241 | |
242 | struct smcd_dev; |
243 | |
244 | enum smc_lgr_type { /* redundancy state of lgr */ |
245 | SMC_LGR_NONE, /* no active links, lgr to be deleted */ |
246 | SMC_LGR_SINGLE, /* 1 active RNIC on each peer */ |
247 | SMC_LGR_SYMMETRIC, /* 2 active RNICs on each peer */ |
248 | SMC_LGR_ASYMMETRIC_PEER, /* local has 2, peer 1 active RNICs */ |
249 | SMC_LGR_ASYMMETRIC_LOCAL, /* local has 1, peer 2 active RNICs */ |
250 | }; |
251 | |
252 | enum smcr_buf_type { /* types of SMC-R sndbufs and RMBs */ |
253 | SMCR_PHYS_CONT_BUFS = 0, |
254 | SMCR_VIRT_CONT_BUFS = 1, |
255 | SMCR_MIXED_BUFS = 2, |
256 | }; |
257 | |
258 | enum smc_llc_flowtype { |
259 | SMC_LLC_FLOW_NONE = 0, |
260 | SMC_LLC_FLOW_ADD_LINK = 2, |
261 | SMC_LLC_FLOW_DEL_LINK = 4, |
262 | SMC_LLC_FLOW_REQ_ADD_LINK = 5, |
263 | SMC_LLC_FLOW_RKEY = 6, |
264 | }; |
265 | |
266 | struct smc_llc_qentry; |
267 | |
268 | struct smc_llc_flow { |
269 | enum smc_llc_flowtype type; |
270 | struct smc_llc_qentry *qentry; |
271 | }; |
272 | |
273 | struct smc_link_group { |
274 | struct list_head list; |
275 | struct rb_root conns_all; /* connection tree */ |
276 | rwlock_t conns_lock; /* protects conns_all */ |
277 | unsigned int conns_num; /* current # of connections */ |
278 | unsigned short vlan_id; /* vlan id of link group */ |
279 | |
280 | struct list_head sndbufs[SMC_RMBE_SIZES];/* tx buffers */ |
281 | struct rw_semaphore sndbufs_lock; /* protects tx buffers */ |
282 | struct list_head rmbs[SMC_RMBE_SIZES]; /* rx buffers */ |
283 | struct rw_semaphore rmbs_lock; /* protects rx buffers */ |
284 | |
285 | u8 id[SMC_LGR_ID_SIZE]; /* unique lgr id */ |
286 | struct delayed_work free_work; /* delayed freeing of an lgr */ |
287 | struct work_struct terminate_work; /* abnormal lgr termination */ |
288 | struct workqueue_struct *tx_wq; /* wq for conn. tx workers */ |
289 | u8 sync_err : 1; /* lgr no longer fits to peer */ |
290 | u8 terminating : 1;/* lgr is terminating */ |
291 | u8 freeing : 1; /* lgr is being freed */ |
292 | |
293 | refcount_t refcnt; /* lgr reference count */ |
294 | bool is_smcd; /* SMC-R or SMC-D */ |
295 | u8 smc_version; |
296 | u8 negotiated_eid[SMC_MAX_EID_LEN]; |
297 | u8 peer_os; /* peer operating system */ |
298 | u8 peer_smc_release; |
299 | u8 peer_hostname[SMC_MAX_HOSTNAME_LEN]; |
300 | union { |
301 | struct { /* SMC-R */ |
302 | enum smc_lgr_role role; |
303 | /* client or server */ |
304 | struct smc_link lnk[SMC_LINKS_PER_LGR_MAX]; |
305 | /* smc link */ |
306 | struct smc_wr_v2_buf *wr_rx_buf_v2; |
307 | /* WR v2 recv payload buffer */ |
308 | struct smc_wr_v2_buf *wr_tx_buf_v2; |
309 | /* WR v2 send payload buffer */ |
310 | char peer_systemid[SMC_SYSTEMID_LEN]; |
311 | /* unique system_id of peer */ |
312 | struct smc_rtoken rtokens[SMC_RMBS_PER_LGR_MAX] |
313 | [SMC_LINKS_PER_LGR_MAX]; |
314 | /* remote addr/key pairs */ |
315 | DECLARE_BITMAP(rtokens_used_mask, SMC_RMBS_PER_LGR_MAX); |
316 | /* used rtoken elements */ |
317 | u8 next_link_id; |
318 | enum smc_lgr_type type; |
319 | enum smcr_buf_type buf_type; |
320 | /* redundancy state */ |
321 | u8 pnet_id[SMC_MAX_PNETID_LEN + 1]; |
322 | /* pnet id of this lgr */ |
323 | struct list_head llc_event_q; |
324 | /* queue for llc events */ |
325 | spinlock_t llc_event_q_lock; |
326 | /* protects llc_event_q */ |
327 | struct rw_semaphore llc_conf_mutex; |
328 | /* protects lgr reconfig. */ |
329 | struct work_struct llc_add_link_work; |
330 | struct work_struct llc_del_link_work; |
331 | struct work_struct llc_event_work; |
332 | /* llc event worker */ |
333 | wait_queue_head_t llc_flow_waiter; |
334 | /* w4 next llc event */ |
335 | wait_queue_head_t llc_msg_waiter; |
336 | /* w4 next llc msg */ |
337 | struct smc_llc_flow llc_flow_lcl; |
338 | /* llc local control field */ |
339 | struct smc_llc_flow llc_flow_rmt; |
340 | /* llc remote control field */ |
341 | struct smc_llc_qentry *delayed_event; |
342 | /* arrived when flow active */ |
343 | spinlock_t llc_flow_lock; |
344 | /* protects llc flow */ |
345 | int llc_testlink_time; |
346 | /* link keep alive time */ |
347 | u32 llc_termination_rsn; |
348 | /* rsn code for termination */ |
349 | u8 nexthop_mac[ETH_ALEN]; |
350 | u8 uses_gateway; |
351 | __be32 saddr; |
352 | /* net namespace */ |
353 | struct net *net; |
354 | u8 max_conns; |
355 | /* max conn can be assigned to lgr */ |
356 | u8 max_links; |
357 | /* max links can be added in lgr */ |
358 | }; |
359 | struct { /* SMC-D */ |
360 | struct smcd_gid peer_gid; |
361 | /* Peer GID (remote) */ |
362 | struct smcd_dev *smcd; |
363 | /* ISM device for VLAN reg. */ |
364 | u8 peer_shutdown : 1; |
365 | /* peer triggered shutdownn */ |
366 | }; |
367 | }; |
368 | }; |
369 | |
370 | struct smc_clc_msg_local; |
371 | |
372 | #define GID_LIST_SIZE 2 |
373 | |
374 | struct smc_gidlist { |
375 | u8 len; |
376 | u8 list[GID_LIST_SIZE][SMC_GID_SIZE]; |
377 | }; |
378 | |
379 | struct smc_init_info_smcrv2 { |
380 | /* Input fields */ |
381 | __be32 saddr; |
382 | struct sock *clc_sk; |
383 | __be32 daddr; |
384 | |
385 | /* Output fields when saddr is set */ |
386 | struct smc_ib_device *ib_dev_v2; |
387 | u8 ib_port_v2; |
388 | u8 ib_gid_v2[SMC_GID_SIZE]; |
389 | |
390 | /* Additional output fields when clc_sk and daddr is set as well */ |
391 | u8 uses_gateway; |
392 | u8 nexthop_mac[ETH_ALEN]; |
393 | |
394 | struct smc_gidlist gidlist; |
395 | }; |
396 | |
397 | #define SMC_MAX_V2_ISM_DEVS SMCD_CLC_MAX_V2_GID_ENTRIES |
398 | /* max # of proposed non-native ISM devices, |
399 | * which can't exceed the max # of CHID-GID |
400 | * entries in CLC proposal SMC-Dv2 extension. |
401 | */ |
402 | struct smc_init_info { |
403 | u8 is_smcd; |
404 | u8 smc_type_v1; |
405 | u8 smc_type_v2; |
406 | u8 release_nr; |
407 | u8 max_conns; |
408 | u8 max_links; |
409 | u8 first_contact_peer; |
410 | u8 first_contact_local; |
411 | u16 feature_mask; |
412 | unsigned short vlan_id; |
413 | u32 rc; |
414 | u8 negotiated_eid[SMC_MAX_EID_LEN]; |
415 | /* SMC-R */ |
416 | u8 smcr_version; |
417 | u8 check_smcrv2; |
418 | u8 peer_gid[SMC_GID_SIZE]; |
419 | u8 peer_mac[ETH_ALEN]; |
420 | u8 peer_systemid[SMC_SYSTEMID_LEN]; |
421 | struct smc_ib_device *ib_dev; |
422 | u8 ib_gid[SMC_GID_SIZE]; |
423 | u8 ib_port; |
424 | u32 ib_clcqpn; |
425 | struct smc_init_info_smcrv2 smcrv2; |
426 | /* SMC-D */ |
427 | struct smcd_gid ism_peer_gid[SMC_MAX_V2_ISM_DEVS + 1]; |
428 | struct smcd_dev *ism_dev[SMC_MAX_V2_ISM_DEVS + 1]; |
429 | u16 ism_chid[SMC_MAX_V2_ISM_DEVS + 1]; |
430 | u8 ism_offered_cnt; /* # of ISM devices offered */ |
431 | u8 ism_selected; /* index of selected ISM dev*/ |
432 | u8 smcd_version; |
433 | }; |
434 | |
435 | /* Find the connection associated with the given alert token in the link group. |
436 | * To use rbtrees we have to implement our own search core. |
437 | * Requires @conns_lock |
438 | * @token alert token to search for |
439 | * @lgr link group to search in |
440 | * Returns connection associated with token if found, NULL otherwise. |
441 | */ |
442 | static inline struct smc_connection *smc_lgr_find_conn( |
443 | u32 token, struct smc_link_group *lgr) |
444 | { |
445 | struct smc_connection *res = NULL; |
446 | struct rb_node *node; |
447 | |
448 | node = lgr->conns_all.rb_node; |
449 | while (node) { |
450 | struct smc_connection *cur = rb_entry(node, |
451 | struct smc_connection, alert_node); |
452 | |
453 | if (cur->alert_token_local > token) { |
454 | node = node->rb_left; |
455 | } else { |
456 | if (cur->alert_token_local < token) { |
457 | node = node->rb_right; |
458 | } else { |
459 | res = cur; |
460 | break; |
461 | } |
462 | } |
463 | } |
464 | |
465 | return res; |
466 | } |
467 | |
468 | static inline bool smc_conn_lgr_valid(struct smc_connection *conn) |
469 | { |
470 | return conn->lgr && conn->alert_token_local; |
471 | } |
472 | |
473 | /* |
474 | * Returns true if the specified link is usable. |
475 | * |
476 | * usable means the link is ready to receive RDMA messages, map memory |
477 | * on the link, etc. This doesn't ensure we are able to send RDMA messages |
478 | * on this link, if sending RDMA messages is needed, use smc_link_sendable() |
479 | */ |
480 | static inline bool smc_link_usable(struct smc_link *lnk) |
481 | { |
482 | if (lnk->state == SMC_LNK_UNUSED || lnk->state == SMC_LNK_INACTIVE) |
483 | return false; |
484 | return true; |
485 | } |
486 | |
487 | /* |
488 | * Returns true if the specified link is ready to receive AND send RDMA |
489 | * messages. |
490 | * |
491 | * For the client side in first contact, the underlying QP may still in |
492 | * RESET or RTR when the link state is ACTIVATING, checks in smc_link_usable() |
493 | * is not strong enough. For those places that need to send any CDC or LLC |
494 | * messages, use smc_link_sendable(), otherwise, use smc_link_usable() instead |
495 | */ |
496 | static inline bool smc_link_sendable(struct smc_link *lnk) |
497 | { |
498 | return smc_link_usable(lnk) && |
499 | lnk->qp_attr.cur_qp_state == IB_QPS_RTS; |
500 | } |
501 | |
502 | static inline bool smc_link_active(struct smc_link *lnk) |
503 | { |
504 | return lnk->state == SMC_LNK_ACTIVE; |
505 | } |
506 | |
507 | static inline void smc_gid_be16_convert(__u8 *buf, u8 *gid_raw) |
508 | { |
509 | sprintf(buf, fmt: "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x" , |
510 | be16_to_cpu(((__be16 *)gid_raw)[0]), |
511 | be16_to_cpu(((__be16 *)gid_raw)[1]), |
512 | be16_to_cpu(((__be16 *)gid_raw)[2]), |
513 | be16_to_cpu(((__be16 *)gid_raw)[3]), |
514 | be16_to_cpu(((__be16 *)gid_raw)[4]), |
515 | be16_to_cpu(((__be16 *)gid_raw)[5]), |
516 | be16_to_cpu(((__be16 *)gid_raw)[6]), |
517 | be16_to_cpu(((__be16 *)gid_raw)[7])); |
518 | } |
519 | |
520 | struct smc_pci_dev { |
521 | __u32 pci_fid; |
522 | __u16 pci_pchid; |
523 | __u16 pci_vendor; |
524 | __u16 pci_device; |
525 | __u8 pci_id[SMC_PCI_ID_STR_LEN]; |
526 | }; |
527 | |
528 | static inline void smc_set_pci_values(struct pci_dev *pci_dev, |
529 | struct smc_pci_dev *smc_dev) |
530 | { |
531 | smc_dev->pci_vendor = pci_dev->vendor; |
532 | smc_dev->pci_device = pci_dev->device; |
533 | snprintf(buf: smc_dev->pci_id, size: sizeof(smc_dev->pci_id), fmt: "%s" , |
534 | pci_name(pdev: pci_dev)); |
535 | #if IS_ENABLED(CONFIG_S390) |
536 | { /* Set s390 specific PCI information */ |
537 | struct zpci_dev *zdev; |
538 | |
539 | zdev = to_zpci(pci_dev); |
540 | smc_dev->pci_fid = zdev->fid; |
541 | smc_dev->pci_pchid = zdev->pchid; |
542 | } |
543 | #endif |
544 | } |
545 | |
546 | struct smc_sock; |
547 | struct smc_clc_msg_accept_confirm; |
548 | |
549 | void smc_lgr_cleanup_early(struct smc_link_group *lgr); |
550 | void smc_lgr_terminate_sched(struct smc_link_group *lgr); |
551 | void smc_lgr_hold(struct smc_link_group *lgr); |
552 | void smc_lgr_put(struct smc_link_group *lgr); |
553 | void smcr_port_add(struct smc_ib_device *smcibdev, u8 ibport); |
554 | void smcr_port_err(struct smc_ib_device *smcibdev, u8 ibport); |
555 | void smc_smcd_terminate(struct smcd_dev *dev, struct smcd_gid *peer_gid, |
556 | unsigned short vlan); |
557 | void smc_smcd_terminate_all(struct smcd_dev *dev); |
558 | void smc_smcr_terminate_all(struct smc_ib_device *smcibdev); |
559 | int smc_buf_create(struct smc_sock *smc, bool is_smcd); |
560 | int smc_uncompress_bufsize(u8 compressed); |
561 | int smc_rmb_rtoken_handling(struct smc_connection *conn, struct smc_link *link, |
562 | struct smc_clc_msg_accept_confirm *clc); |
563 | int smc_rtoken_add(struct smc_link *lnk, __be64 nw_vaddr, __be32 nw_rkey); |
564 | int smc_rtoken_delete(struct smc_link *lnk, __be32 nw_rkey); |
565 | void smc_rtoken_set(struct smc_link_group *lgr, int link_idx, int link_idx_new, |
566 | __be32 nw_rkey_known, __be64 nw_vaddr, __be32 nw_rkey); |
567 | void smc_rtoken_set2(struct smc_link_group *lgr, int rtok_idx, int link_id, |
568 | __be64 nw_vaddr, __be32 nw_rkey); |
569 | void smc_sndbuf_sync_sg_for_device(struct smc_connection *conn); |
570 | void smc_rmb_sync_sg_for_cpu(struct smc_connection *conn); |
571 | int smc_vlan_by_tcpsk(struct socket *clcsock, struct smc_init_info *ini); |
572 | |
573 | void smc_conn_free(struct smc_connection *conn); |
574 | int smc_conn_create(struct smc_sock *smc, struct smc_init_info *ini); |
575 | int smc_core_init(void); |
576 | void smc_core_exit(void); |
577 | |
578 | int smcr_link_init(struct smc_link_group *lgr, struct smc_link *lnk, |
579 | u8 link_idx, struct smc_init_info *ini); |
580 | void smcr_link_clear(struct smc_link *lnk, bool log); |
581 | void smcr_link_hold(struct smc_link *lnk); |
582 | void smcr_link_put(struct smc_link *lnk); |
583 | void smc_switch_link_and_count(struct smc_connection *conn, |
584 | struct smc_link *to_lnk); |
585 | int smcr_buf_map_lgr(struct smc_link *lnk); |
586 | int smcr_buf_reg_lgr(struct smc_link *lnk); |
587 | void smcr_lgr_set_type(struct smc_link_group *lgr, enum smc_lgr_type new_type); |
588 | void smcr_lgr_set_type_asym(struct smc_link_group *lgr, |
589 | enum smc_lgr_type new_type, int asym_lnk_idx); |
590 | int smcr_link_reg_buf(struct smc_link *link, struct smc_buf_desc *rmb_desc); |
591 | struct smc_link *smc_switch_conns(struct smc_link_group *lgr, |
592 | struct smc_link *from_lnk, bool is_dev_err); |
593 | void smcr_link_down_cond(struct smc_link *lnk); |
594 | void smcr_link_down_cond_sched(struct smc_link *lnk); |
595 | int smc_nl_get_sys_info(struct sk_buff *skb, struct netlink_callback *cb); |
596 | int smcr_nl_get_lgr(struct sk_buff *skb, struct netlink_callback *cb); |
597 | int smcr_nl_get_link(struct sk_buff *skb, struct netlink_callback *cb); |
598 | int smcd_nl_get_lgr(struct sk_buff *skb, struct netlink_callback *cb); |
599 | |
600 | static inline struct smc_link_group *smc_get_lgr(struct smc_link *link) |
601 | { |
602 | return link->lgr; |
603 | } |
604 | #endif |
605 | |