1 #ifndef _SDP_H_ 2 #define _SDP_H_ 3 4 #define LINUXKPI_PARAM_PREFIX ib_sdp_ 5 6 #include "opt_ddb.h" 7 #include "opt_inet.h" 8 #include "opt_ofed.h" 9 10 #include <sys/param.h> 11 #include <sys/systm.h> 12 #include <sys/malloc.h> 13 #include <sys/kernel.h> 14 #include <sys/sysctl.h> 15 #include <sys/mbuf.h> 16 #include <sys/lock.h> 17 #include <sys/rwlock.h> 18 #include <sys/socket.h> 19 #include <sys/socketvar.h> 20 #include <sys/protosw.h> 21 #include <sys/proc.h> 22 #include <sys/jail.h> 23 #include <sys/domain.h> 24 25 #ifdef DDB 26 #include <ddb/ddb.h> 27 #endif 28 29 #include <net/if.h> 30 #include <net/if_var.h> 31 #include <net/route.h> 32 #include <net/vnet.h> 33 34 #include <netinet/in.h> 35 #include <netinet/in_systm.h> 36 #include <netinet/in_var.h> 37 #include <netinet/in_pcb.h> 38 #include <netinet/tcp.h> 39 #include <netinet/tcp_fsm.h> 40 #include <netinet/tcp_timer.h> 41 #include <netinet/tcp_var.h> 42 43 #include <linux/device.h> 44 #include <linux/err.h> 45 #include <linux/sched.h> 46 #include <linux/workqueue.h> 47 #include <linux/wait.h> 48 #include <linux/module.h> 49 #include <linux/moduleparam.h> 50 #include <linux/pci.h> 51 52 #include <rdma/ib_verbs.h> 53 #include <rdma/rdma_cm.h> 54 #include <rdma/ib_cm.h> 55 #include <rdma/ib_fmr_pool.h> 56 #include <rdma/rdma_sdp.h> 57 58 #ifdef SDP_DEBUG 59 #define CONFIG_INFINIBAND_SDP_DEBUG 60 #endif 61 62 #include "sdp_dbg.h" 63 64 #undef LIST_HEAD 65 /* From sys/queue.h */ 66 #define LIST_HEAD(name, type) \ 67 struct name { \ 68 struct type *lh_first; /* first element */ \ 69 } 70 71 /* Interval between successive polls in the Tx routine when polling is used 72 instead of interrupts (in per-core Tx rings) - should be power of 2 */ 73 #define SDP_TX_POLL_MODER 16 74 #define SDP_TX_POLL_TIMEOUT (HZ / 20) 75 #define SDP_NAGLE_TIMEOUT (HZ / 10) 76 77 #define SDP_SRCAVAIL_CANCEL_TIMEOUT (HZ * 5) 78 #define SDP_SRCAVAIL_ADV_TIMEOUT (1 * HZ) 79 #define SDP_SRCAVAIL_PAYLOAD_LEN 1 80 81 #define SDP_RESOLVE_TIMEOUT 1000 82 #define SDP_ROUTE_TIMEOUT 1000 83 #define SDP_RETRY_COUNT 5 84 #define SDP_KEEPALIVE_TIME (120 * 60 * HZ) 85 #define SDP_FIN_WAIT_TIMEOUT (60 * HZ) /* like TCP_FIN_TIMEOUT */ 86 87 #define SDP_TX_SIZE 0x40 88 #define SDP_RX_SIZE 0x40 89 90 #define SDP_FMR_SIZE (MIN(0x1000, PAGE_SIZE) / sizeof(u64)) 91 #define SDP_FMR_POOL_SIZE 1024 92 #define SDP_FMR_DIRTY_SIZE ( SDP_FMR_POOL_SIZE / 4 ) 93 94 #define SDP_MAX_RDMA_READ_LEN (PAGE_SIZE * (SDP_FMR_SIZE - 2)) 95 96 /* mb inlined data len - rest will be rx'ed into frags */ 97 #define SDP_HEAD_SIZE (sizeof(struct sdp_bsdh)) 98 99 /* limit tx payload len, if the sink supports bigger buffers than the source 100 * can handle. 101 * or rx fragment size (limited by sge->length size) */ 102 #define SDP_MAX_PACKET (1 << 16) 103 #define SDP_MAX_PAYLOAD (SDP_MAX_PACKET - SDP_HEAD_SIZE) 104 105 #define SDP_MAX_RECV_SGES (SDP_MAX_PACKET / MCLBYTES) 106 #define SDP_MAX_SEND_SGES (SDP_MAX_PACKET / MCLBYTES) + 2 107 108 #define SDP_NUM_WC 4 109 110 #define SDP_DEF_ZCOPY_THRESH 64*1024 111 #define SDP_MIN_ZCOPY_THRESH PAGE_SIZE 112 #define SDP_MAX_ZCOPY_THRESH 1048576 113 114 #define SDP_OP_RECV 0x800000000LL 115 #define SDP_OP_SEND 0x400000000LL 116 #define SDP_OP_RDMA 0x200000000LL 117 #define SDP_OP_NOP 0x100000000LL 118 119 /* how long (in jiffies) to block sender till tx completion*/ 120 #define SDP_BZCOPY_POLL_TIMEOUT (HZ / 10) 121 122 #define SDP_AUTO_CONF 0xffff 123 #define AUTO_MOD_DELAY (HZ / 4) 124 125 struct sdp_mb_cb { 126 __u32 seq; /* Starting sequence number */ 127 struct bzcopy_state *bz; 128 struct rx_srcavail_state *rx_sa; 129 struct tx_srcavail_state *tx_sa; 130 }; 131 132 #define M_PUSH M_PROTO1 /* Do a 'push'. */ 133 #define M_URG M_PROTO2 /* Mark as urgent (oob). */ 134 135 #define SDP_SKB_CB(__mb) ((struct sdp_mb_cb *)&((__mb)->cb[0])) 136 #define BZCOPY_STATE(mb) (SDP_SKB_CB(mb)->bz) 137 #define RX_SRCAVAIL_STATE(mb) (SDP_SKB_CB(mb)->rx_sa) 138 #define TX_SRCAVAIL_STATE(mb) (SDP_SKB_CB(mb)->tx_sa) 139 140 #ifndef MIN 141 #define MIN(a, b) (a < b ? a : b) 142 #endif 143 144 #define ring_head(ring) (atomic_read(&(ring).head)) 145 #define ring_tail(ring) (atomic_read(&(ring).tail)) 146 #define ring_posted(ring) (ring_head(ring) - ring_tail(ring)) 147 148 #define rx_ring_posted(ssk) ring_posted(ssk->rx_ring) 149 #ifdef SDP_ZCOPY 150 #define tx_ring_posted(ssk) (ring_posted(ssk->tx_ring) + \ 151 (ssk->tx_ring.rdma_inflight ? ssk->tx_ring.rdma_inflight->busy : 0)) 152 #else 153 #define tx_ring_posted(ssk) ring_posted(ssk->tx_ring) 154 #endif 155 156 extern int sdp_zcopy_thresh; 157 extern int rcvbuf_initial_size; 158 extern struct workqueue_struct *rx_comp_wq; 159 extern struct ib_client sdp_client; 160 161 enum sdp_mid { 162 SDP_MID_HELLO = 0x0, 163 SDP_MID_HELLO_ACK = 0x1, 164 SDP_MID_DISCONN = 0x2, 165 SDP_MID_ABORT = 0x3, 166 SDP_MID_SENDSM = 0x4, 167 SDP_MID_RDMARDCOMPL = 0x6, 168 SDP_MID_SRCAVAIL_CANCEL = 0x8, 169 SDP_MID_CHRCVBUF = 0xB, 170 SDP_MID_CHRCVBUF_ACK = 0xC, 171 SDP_MID_SINKAVAIL = 0xFD, 172 SDP_MID_SRCAVAIL = 0xFE, 173 SDP_MID_DATA = 0xFF, 174 }; 175 176 enum sdp_flags { 177 SDP_OOB_PRES = 1 << 0, 178 SDP_OOB_PEND = 1 << 1, 179 }; 180 181 enum { 182 SDP_MIN_TX_CREDITS = 2 183 }; 184 185 enum { 186 SDP_ERR_ERROR = -4, 187 SDP_ERR_FAULT = -3, 188 SDP_NEW_SEG = -2, 189 SDP_DO_WAIT_MEM = -1 190 }; 191 192 struct sdp_rrch { 193 __u32 len; 194 } __attribute__((__packed__)); 195 196 struct sdp_srcah { 197 __u32 len; 198 __u32 rkey; 199 __u64 vaddr; 200 } __attribute__((__packed__)); 201 202 struct sdp_buf { 203 struct mbuf *mb; 204 u64 mapping[SDP_MAX_SEND_SGES]; 205 } __attribute__((__packed__)); 206 207 struct sdp_chrecvbuf { 208 u32 size; 209 } __attribute__((__packed__)); 210 211 /* Context used for synchronous zero copy bcopy (BZCOPY) */ 212 struct bzcopy_state { 213 unsigned char __user *u_base; 214 int u_len; 215 int left; 216 int page_cnt; 217 int cur_page; 218 int cur_offset; 219 int busy; 220 struct sdp_sock *ssk; 221 struct page **pages; 222 }; 223 224 enum rx_sa_flag { 225 RX_SA_ABORTED = 2, 226 }; 227 228 enum tx_sa_flag { 229 TX_SA_SENDSM = 0x01, 230 TX_SA_CROSS_SEND = 0x02, 231 TX_SA_INTRRUPTED = 0x04, 232 TX_SA_TIMEDOUT = 0x08, 233 TX_SA_ERROR = 0x10, 234 }; 235 236 struct rx_srcavail_state { 237 /* Advertised buffer stuff */ 238 u32 mseq; 239 u32 used; 240 u32 reported; 241 u32 len; 242 u32 rkey; 243 u64 vaddr; 244 245 /* Dest buff info */ 246 struct ib_umem *umem; 247 struct ib_pool_fmr *fmr; 248 249 /* Utility */ 250 u8 busy; 251 enum rx_sa_flag flags; 252 }; 253 254 struct tx_srcavail_state { 255 /* Data below 'busy' will be reset */ 256 u8 busy; 257 258 struct ib_umem *umem; 259 struct ib_pool_fmr *fmr; 260 261 u32 bytes_sent; 262 u32 bytes_acked; 263 264 enum tx_sa_flag abort_flags; 265 u8 posted; 266 267 u32 mseq; 268 }; 269 270 struct sdp_tx_ring { 271 #ifdef SDP_ZCOPY 272 struct rx_srcavail_state *rdma_inflight; 273 #endif 274 struct sdp_buf *buffer; 275 atomic_t head; 276 atomic_t tail; 277 struct ib_cq *cq; 278 279 atomic_t credits; 280 #define tx_credits(ssk) (atomic_read(&ssk->tx_ring.credits)) 281 282 struct callout timer; 283 u16 poll_cnt; 284 }; 285 286 struct sdp_rx_ring { 287 struct sdp_buf *buffer; 288 atomic_t head; 289 atomic_t tail; 290 struct ib_cq *cq; 291 292 int destroyed; 293 struct rwlock destroyed_lock; 294 }; 295 296 struct sdp_device { 297 struct ib_pd *pd; 298 struct ib_fmr_pool *fmr_pool; 299 }; 300 301 struct sdp_moderation { 302 unsigned long last_moder_packets; 303 unsigned long last_moder_tx_packets; 304 unsigned long last_moder_bytes; 305 unsigned long last_moder_jiffies; 306 int last_moder_time; 307 u16 rx_usecs; 308 u16 rx_frames; 309 u16 tx_usecs; 310 u32 pkt_rate_low; 311 u16 rx_usecs_low; 312 u32 pkt_rate_high; 313 u16 rx_usecs_high; 314 u16 sample_interval; 315 u16 adaptive_rx_coal; 316 u32 msg_enable; 317 318 int moder_cnt; 319 int moder_time; 320 }; 321 322 /* These are flags fields. */ 323 #define SDP_TIMEWAIT 0x0001 /* In ssk timewait state. */ 324 #define SDP_DROPPED 0x0002 /* Socket has been dropped. */ 325 #define SDP_SOCKREF 0x0004 /* Holding a sockref for close. */ 326 #define SDP_NODELAY 0x0008 /* Disble nagle. */ 327 #define SDP_NEEDFIN 0x0010 /* Send a fin on the next tx. */ 328 #define SDP_DREQWAIT 0x0020 /* Waiting on DREQ. */ 329 #define SDP_DESTROY 0x0040 /* Being destroyed. */ 330 #define SDP_DISCON 0x0080 /* rdma_disconnect is owed. */ 331 332 /* These are oobflags */ 333 #define SDP_HADOOB 0x0001 /* Had OOB data. */ 334 #define SDP_HAVEOOB 0x0002 /* Have OOB data. */ 335 336 struct sdp_sock { 337 LIST_ENTRY(sdp_sock) list; 338 struct socket *socket; 339 struct rdma_cm_id *id; 340 struct ib_device *ib_device; 341 struct sdp_device *sdp_dev; 342 struct ib_qp *qp; 343 struct ucred *cred; 344 struct callout keep2msl; /* 2msl and keepalive timer. */ 345 struct callout nagle_timer; /* timeout waiting for ack */ 346 struct ib_ucontext context; 347 in_port_t lport; 348 in_addr_t laddr; 349 in_port_t fport; 350 in_addr_t faddr; 351 int flags; 352 int oobflags; /* protected by rx lock. */ 353 int state; 354 int softerror; 355 int recv_bytes; /* Bytes per recv. buf including header */ 356 int xmit_size_goal; 357 char iobc; 358 359 struct sdp_rx_ring rx_ring; 360 struct sdp_tx_ring tx_ring; 361 struct rwlock lock; 362 struct mbufq rxctlq; /* received control packets */ 363 364 int qp_active; /* XXX Flag. */ 365 int max_sge; 366 struct work_struct rx_comp_work; 367 #define rcv_nxt(ssk) atomic_read(&(ssk->rcv_nxt)) 368 atomic_t rcv_nxt; 369 370 /* SDP specific */ 371 atomic_t mseq_ack; 372 #define mseq_ack(ssk) (atomic_read(&ssk->mseq_ack)) 373 unsigned max_bufs; /* Initial buffers offered by other side */ 374 unsigned min_bufs; /* Low water mark to wake senders */ 375 376 unsigned long nagle_last_unacked; /* mseq of lastest unacked packet */ 377 378 atomic_t remote_credits; 379 #define remote_credits(ssk) (atomic_read(&ssk->remote_credits)) 380 int poll_cq; 381 382 /* SDP slow start */ 383 int recv_request_head; /* mark the rx_head when the resize request 384 was received */ 385 int recv_request; /* XXX flag if request to resize was received */ 386 387 unsigned long tx_packets; 388 unsigned long rx_packets; 389 unsigned long tx_bytes; 390 unsigned long rx_bytes; 391 struct sdp_moderation auto_mod; 392 struct task shutdown_task; 393 #ifdef SDP_ZCOPY 394 struct tx_srcavail_state *tx_sa; 395 struct rx_srcavail_state *rx_sa; 396 spinlock_t tx_sa_lock; 397 struct delayed_work srcavail_cancel_work; 398 int srcavail_cancel_mseq; 399 /* ZCOPY data: -1:use global; 0:disable zcopy; >0: zcopy threshold */ 400 int zcopy_thresh; 401 #endif 402 }; 403 404 #define sdp_sk(so) ((struct sdp_sock *)(so->so_pcb)) 405 406 #define SDP_RLOCK(ssk) rw_rlock(&(ssk)->lock) 407 #define SDP_WLOCK(ssk) rw_wlock(&(ssk)->lock) 408 #define SDP_RUNLOCK(ssk) rw_runlock(&(ssk)->lock) 409 #define SDP_WUNLOCK(ssk) rw_wunlock(&(ssk)->lock) 410 #define SDP_WLOCK_ASSERT(ssk) rw_assert(&(ssk)->lock, RA_WLOCKED) 411 #define SDP_RLOCK_ASSERT(ssk) rw_assert(&(ssk)->lock, RA_RLOCKED) 412 #define SDP_LOCK_ASSERT(ssk) rw_assert(&(ssk)->lock, RA_LOCKED) 413 414 MALLOC_DECLARE(M_SDP); 415 SYSCTL_DECL(_net_inet_sdp); 416 417 static inline void tx_sa_reset(struct tx_srcavail_state *tx_sa) 418 { 419 memset((void *)&tx_sa->busy, 0, 420 sizeof(*tx_sa) - offsetof(typeof(*tx_sa), busy)); 421 } 422 423 static inline void rx_ring_unlock(struct sdp_rx_ring *rx_ring) 424 { 425 rw_runlock(&rx_ring->destroyed_lock); 426 } 427 428 static inline int rx_ring_trylock(struct sdp_rx_ring *rx_ring) 429 { 430 rw_rlock(&rx_ring->destroyed_lock); 431 if (rx_ring->destroyed) { 432 rx_ring_unlock(rx_ring); 433 return 0; 434 } 435 return 1; 436 } 437 438 static inline void rx_ring_destroy_lock(struct sdp_rx_ring *rx_ring) 439 { 440 rw_wlock(&rx_ring->destroyed_lock); 441 rx_ring->destroyed = 1; 442 rw_wunlock(&rx_ring->destroyed_lock); 443 } 444 445 static inline void sdp_arm_rx_cq(struct sdp_sock *ssk) 446 { 447 sdp_prf(ssk->socket, NULL, "Arming RX cq"); 448 sdp_dbg_data(ssk->socket, "Arming RX cq\n"); 449 450 ib_req_notify_cq(ssk->rx_ring.cq, IB_CQ_NEXT_COMP); 451 } 452 453 static inline void sdp_arm_tx_cq(struct sdp_sock *ssk) 454 { 455 sdp_prf(ssk->socket, NULL, "Arming TX cq"); 456 sdp_dbg_data(ssk->socket, "Arming TX cq. credits: %d, posted: %d\n", 457 tx_credits(ssk), tx_ring_posted(ssk)); 458 459 ib_req_notify_cq(ssk->tx_ring.cq, IB_CQ_NEXT_COMP); 460 } 461 462 /* return the min of: 463 * - tx credits 464 * - free slots in tx_ring (not including SDP_MIN_TX_CREDITS 465 */ 466 static inline int tx_slots_free(struct sdp_sock *ssk) 467 { 468 int min_free; 469 470 min_free = MIN(tx_credits(ssk), 471 SDP_TX_SIZE - tx_ring_posted(ssk)); 472 if (min_free < SDP_MIN_TX_CREDITS) 473 return 0; 474 475 return min_free - SDP_MIN_TX_CREDITS; 476 }; 477 478 /* utilities */ 479 static inline char *mid2str(int mid) 480 { 481 #define ENUM2STR(e) [e] = #e 482 static char *mid2str[] = { 483 ENUM2STR(SDP_MID_HELLO), 484 ENUM2STR(SDP_MID_HELLO_ACK), 485 ENUM2STR(SDP_MID_ABORT), 486 ENUM2STR(SDP_MID_DISCONN), 487 ENUM2STR(SDP_MID_SENDSM), 488 ENUM2STR(SDP_MID_RDMARDCOMPL), 489 ENUM2STR(SDP_MID_SRCAVAIL_CANCEL), 490 ENUM2STR(SDP_MID_CHRCVBUF), 491 ENUM2STR(SDP_MID_CHRCVBUF_ACK), 492 ENUM2STR(SDP_MID_DATA), 493 ENUM2STR(SDP_MID_SRCAVAIL), 494 ENUM2STR(SDP_MID_SINKAVAIL), 495 }; 496 497 if (mid >= ARRAY_SIZE(mid2str)) 498 return NULL; 499 500 return mid2str[mid]; 501 } 502 503 static inline struct mbuf * 504 sdp_alloc_mb(struct socket *sk, u8 mid, int size, int wait) 505 { 506 struct sdp_bsdh *h; 507 struct mbuf *mb; 508 509 MGETHDR(mb, wait, MT_DATA); 510 if (mb == NULL) 511 return (NULL); 512 mb->m_pkthdr.len = mb->m_len = sizeof(struct sdp_bsdh); 513 h = mtod(mb, struct sdp_bsdh *); 514 h->mid = mid; 515 516 return mb; 517 } 518 static inline struct mbuf * 519 sdp_alloc_mb_data(struct socket *sk, int wait) 520 { 521 return sdp_alloc_mb(sk, SDP_MID_DATA, 0, wait); 522 } 523 524 static inline struct mbuf * 525 sdp_alloc_mb_disconnect(struct socket *sk, int wait) 526 { 527 return sdp_alloc_mb(sk, SDP_MID_DISCONN, 0, wait); 528 } 529 530 static inline void * 531 mb_put(struct mbuf *mb, int len) 532 { 533 uint8_t *data; 534 535 data = mb->m_data; 536 data += mb->m_len; 537 mb->m_len += len; 538 return (void *)data; 539 } 540 541 static inline struct mbuf * 542 sdp_alloc_mb_chrcvbuf_ack(struct socket *sk, int size, int wait) 543 { 544 struct mbuf *mb; 545 struct sdp_chrecvbuf *resp_size; 546 547 mb = sdp_alloc_mb(sk, SDP_MID_CHRCVBUF_ACK, sizeof(*resp_size), wait); 548 if (mb == NULL) 549 return (NULL); 550 resp_size = (struct sdp_chrecvbuf *)mb_put(mb, sizeof *resp_size); 551 resp_size->size = htonl(size); 552 553 return mb; 554 } 555 556 static inline struct mbuf * 557 sdp_alloc_mb_srcavail(struct socket *sk, u32 len, u32 rkey, u64 vaddr, int wait) 558 { 559 struct mbuf *mb; 560 struct sdp_srcah *srcah; 561 562 mb = sdp_alloc_mb(sk, SDP_MID_SRCAVAIL, sizeof(*srcah), wait); 563 if (mb == NULL) 564 return (NULL); 565 srcah = (struct sdp_srcah *)mb_put(mb, sizeof(*srcah)); 566 srcah->len = htonl(len); 567 srcah->rkey = htonl(rkey); 568 srcah->vaddr = cpu_to_be64(vaddr); 569 570 return mb; 571 } 572 573 static inline struct mbuf * 574 sdp_alloc_mb_srcavail_cancel(struct socket *sk, int wait) 575 { 576 return sdp_alloc_mb(sk, SDP_MID_SRCAVAIL_CANCEL, 0, wait); 577 } 578 579 static inline struct mbuf * 580 sdp_alloc_mb_rdmardcompl(struct socket *sk, u32 len, int wait) 581 { 582 struct mbuf *mb; 583 struct sdp_rrch *rrch; 584 585 mb = sdp_alloc_mb(sk, SDP_MID_RDMARDCOMPL, sizeof(*rrch), wait); 586 if (mb == NULL) 587 return (NULL); 588 rrch = (struct sdp_rrch *)mb_put(mb, sizeof(*rrch)); 589 rrch->len = htonl(len); 590 591 return mb; 592 } 593 594 static inline struct mbuf * 595 sdp_alloc_mb_sendsm(struct socket *sk, int wait) 596 { 597 return sdp_alloc_mb(sk, SDP_MID_SENDSM, 0, wait); 598 } 599 static inline int sdp_tx_ring_slots_left(struct sdp_sock *ssk) 600 { 601 return SDP_TX_SIZE - tx_ring_posted(ssk); 602 } 603 604 static inline int credit_update_needed(struct sdp_sock *ssk) 605 { 606 int c; 607 608 c = remote_credits(ssk); 609 if (likely(c > SDP_MIN_TX_CREDITS)) 610 c += c/2; 611 return unlikely(c < rx_ring_posted(ssk)) && 612 likely(tx_credits(ssk) > 0) && 613 likely(sdp_tx_ring_slots_left(ssk)); 614 } 615 616 617 #define SDPSTATS_COUNTER_INC(stat) 618 #define SDPSTATS_COUNTER_ADD(stat, val) 619 #define SDPSTATS_COUNTER_MID_INC(stat, mid) 620 #define SDPSTATS_HIST_LINEAR(stat, size) 621 #define SDPSTATS_HIST(stat, size) 622 623 static inline void 624 sdp_cleanup_sdp_buf(struct sdp_sock *ssk, struct sdp_buf *sbuf, 625 enum dma_data_direction dir) 626 { 627 struct ib_device *dev; 628 struct mbuf *mb; 629 int i; 630 631 dev = ssk->ib_device; 632 for (i = 0, mb = sbuf->mb; mb != NULL; mb = mb->m_next, i++) 633 ib_dma_unmap_single(dev, sbuf->mapping[i], mb->m_len, dir); 634 } 635 636 /* sdp_main.c */ 637 void sdp_set_default_moderation(struct sdp_sock *ssk); 638 void sdp_start_keepalive_timer(struct socket *sk); 639 void sdp_urg(struct sdp_sock *ssk, struct mbuf *mb); 640 void sdp_cancel_dreq_wait_timeout(struct sdp_sock *ssk); 641 void sdp_abort(struct socket *sk); 642 struct sdp_sock *sdp_notify(struct sdp_sock *ssk, int error); 643 644 645 /* sdp_cma.c */ 646 int sdp_cma_handler(struct rdma_cm_id *, struct rdma_cm_event *); 647 648 /* sdp_tx.c */ 649 int sdp_tx_ring_create(struct sdp_sock *ssk, struct ib_device *device); 650 void sdp_tx_ring_destroy(struct sdp_sock *ssk); 651 int sdp_xmit_poll(struct sdp_sock *ssk, int force); 652 void sdp_post_send(struct sdp_sock *ssk, struct mbuf *mb); 653 void sdp_post_sends(struct sdp_sock *ssk, int wait); 654 void sdp_post_keepalive(struct sdp_sock *ssk); 655 656 /* sdp_rx.c */ 657 void sdp_rx_ring_init(struct sdp_sock *ssk); 658 int sdp_rx_ring_create(struct sdp_sock *ssk, struct ib_device *device); 659 void sdp_rx_ring_destroy(struct sdp_sock *ssk); 660 int sdp_resize_buffers(struct sdp_sock *ssk, u32 new_size); 661 int sdp_init_buffers(struct sdp_sock *ssk, u32 new_size); 662 void sdp_do_posts(struct sdp_sock *ssk); 663 void sdp_rx_comp_full(struct sdp_sock *ssk); 664 665 /* sdp_zcopy.c */ 666 struct kiocb; 667 int sdp_sendmsg_zcopy(struct kiocb *iocb, struct socket *sk, struct iovec *iov); 668 int sdp_handle_srcavail(struct sdp_sock *ssk, struct sdp_srcah *srcah); 669 void sdp_handle_sendsm(struct sdp_sock *ssk, u32 mseq_ack); 670 void sdp_handle_rdma_read_compl(struct sdp_sock *ssk, u32 mseq_ack, 671 u32 bytes_completed); 672 int sdp_handle_rdma_read_cqe(struct sdp_sock *ssk); 673 int sdp_rdma_to_iovec(struct socket *sk, struct iovec *iov, struct mbuf *mb, 674 unsigned long *used); 675 int sdp_post_rdma_rd_compl(struct sdp_sock *ssk, 676 struct rx_srcavail_state *rx_sa); 677 int sdp_post_sendsm(struct socket *sk); 678 void srcavail_cancel_timeout(struct work_struct *work); 679 void sdp_abort_srcavail(struct socket *sk); 680 void sdp_abort_rdma_read(struct socket *sk); 681 int sdp_process_rx(struct sdp_sock *ssk); 682 683 #endif 684