1#ifndef _SDP_H_ 2#define _SDP_H_ 3 4#include "opt_ddb.h" 5#include "opt_inet.h" 6#include "opt_ofed.h" 7 8#include <sys/param.h> 9#include <sys/systm.h> 10#include <sys/malloc.h> 11#include <sys/kernel.h> 12#include <sys/sysctl.h> 13#include <sys/mbuf.h> 14#include <sys/lock.h> 15#include <sys/rwlock.h> 16#include <sys/socket.h> 17#include <sys/socketvar.h> 18#include <sys/protosw.h> 19#include <sys/proc.h> 20#include <sys/jail.h> 21#include <sys/domain.h> 22 23#ifdef DDB 24#include <ddb/ddb.h> 25#endif 26 27#include <net/if.h> 28#include <net/route.h> 29#include <net/vnet.h> 30 31#include <netinet/in.h> 32#include <netinet/in_systm.h> 33#include <netinet/in_var.h> 34#include <netinet/in_pcb.h> 35#include <netinet/tcp.h> 36#include <netinet/tcp_fsm.h> 37#include <netinet/tcp_timer.h> 38#include <netinet/tcp_var.h> 39 40#include <linux/device.h> 41#include <linux/err.h> 42#include <linux/sched.h> 43#include <linux/workqueue.h> 44#include <linux/wait.h> 45#include <linux/module.h> 46#include <linux/moduleparam.h> 47#include <linux/pci.h> 48 49#include <rdma/ib_verbs.h> 50#include <rdma/rdma_cm.h> 51#include <rdma/ib_cm.h> 52#include <rdma/sdp_socket.h> 53#include <rdma/ib_fmr_pool.h> 54 55#ifdef SDP_DEBUG 56#define CONFIG_INFINIBAND_SDP_DEBUG 57#endif 58 59#include "sdp_dbg.h" 60 61#undef LIST_HEAD 62/* From sys/queue.h */ 63#define LIST_HEAD(name, type) \ 64struct name { \ 65 struct type *lh_first; /* first element */ \ 66} 67 68/* Interval between sucessive polls in the Tx routine when polling is used 69 instead of interrupts (in per-core Tx rings) - should be power of 2 */ 70#define SDP_TX_POLL_MODER 16 71#define SDP_TX_POLL_TIMEOUT (HZ / 20) 72#define SDP_NAGLE_TIMEOUT (HZ / 10) 73 74#define SDP_SRCAVAIL_CANCEL_TIMEOUT (HZ * 5) 75#define SDP_SRCAVAIL_ADV_TIMEOUT (1 * HZ) 76#define SDP_SRCAVAIL_PAYLOAD_LEN 1 77 78#define SDP_RESOLVE_TIMEOUT 1000 79#define SDP_ROUTE_TIMEOUT 1000 80#define SDP_RETRY_COUNT 5 81#define SDP_KEEPALIVE_TIME (120 * 60 * HZ) 82#define SDP_FIN_WAIT_TIMEOUT (60 * HZ) /* like TCP_FIN_TIMEOUT */ 83 84#define SDP_TX_SIZE 0x40 85#define SDP_RX_SIZE 0x40 86 87#define SDP_FMR_SIZE (MIN(0x1000, PAGE_SIZE) / sizeof(u64)) 88#define SDP_FMR_POOL_SIZE 1024 89#define SDP_FMR_DIRTY_SIZE ( SDP_FMR_POOL_SIZE / 4 ) 90 91#define SDP_MAX_RDMA_READ_LEN (PAGE_SIZE * (SDP_FMR_SIZE - 2)) 92 93/* mb inlined data len - rest will be rx'ed into frags */ 94#define SDP_HEAD_SIZE (sizeof(struct sdp_bsdh)) 95 96/* limit tx payload len, if the sink supports bigger buffers than the source 97 * can handle. 98 * or rx fragment size (limited by sge->length size) */ 99#define SDP_MAX_PACKET (1 << 16) 100#define SDP_MAX_PAYLOAD (SDP_MAX_PACKET - SDP_HEAD_SIZE) 101 102#define SDP_MAX_RECV_SGES (SDP_MAX_PACKET / MCLBYTES) 103#define SDP_MAX_SEND_SGES (SDP_MAX_PACKET / MCLBYTES) + 2 104 105#define SDP_NUM_WC 4 106 107#define SDP_DEF_ZCOPY_THRESH 64*1024 108#define SDP_MIN_ZCOPY_THRESH PAGE_SIZE 109#define SDP_MAX_ZCOPY_THRESH 1048576 110 111#define SDP_OP_RECV 0x800000000LL 112#define SDP_OP_SEND 0x400000000LL 113#define SDP_OP_RDMA 0x200000000LL 114#define SDP_OP_NOP 0x100000000LL 115 116/* how long (in jiffies) to block sender till tx completion*/ 117#define SDP_BZCOPY_POLL_TIMEOUT (HZ / 10) 118 119#define SDP_AUTO_CONF 0xffff 120#define AUTO_MOD_DELAY (HZ / 4) 121 122struct sdp_mb_cb { 123 __u32 seq; /* Starting sequence number */ 124 struct bzcopy_state *bz; 125 struct rx_srcavail_state *rx_sa; 126 struct tx_srcavail_state *tx_sa; 127}; 128 129#define M_PUSH M_PROTO1 /* Do a 'push'. */ 130#define M_URG M_PROTO2 /* Mark as urgent (oob). */ 131 132#define SDP_SKB_CB(__mb) ((struct sdp_mb_cb *)&((__mb)->cb[0])) 133#define BZCOPY_STATE(mb) (SDP_SKB_CB(mb)->bz) 134#define RX_SRCAVAIL_STATE(mb) (SDP_SKB_CB(mb)->rx_sa) 135#define TX_SRCAVAIL_STATE(mb) (SDP_SKB_CB(mb)->tx_sa) 136 137#ifndef MIN 138#define MIN(a, b) (a < b ? a : b) 139#endif 140 141#define ring_head(ring) (atomic_read(&(ring).head)) 142#define ring_tail(ring) (atomic_read(&(ring).tail)) 143#define ring_posted(ring) (ring_head(ring) - ring_tail(ring)) 144 145#define rx_ring_posted(ssk) ring_posted(ssk->rx_ring) 146#ifdef SDP_ZCOPY 147#define tx_ring_posted(ssk) (ring_posted(ssk->tx_ring) + \ 148 (ssk->tx_ring.rdma_inflight ? ssk->tx_ring.rdma_inflight->busy : 0)) 149#else 150#define tx_ring_posted(ssk) ring_posted(ssk->tx_ring) 151#endif 152 153extern int sdp_zcopy_thresh; 154extern int rcvbuf_initial_size; 155extern struct workqueue_struct *rx_comp_wq; 156extern struct ib_client sdp_client; 157 158enum sdp_mid { 159 SDP_MID_HELLO = 0x0, 160 SDP_MID_HELLO_ACK = 0x1, 161 SDP_MID_DISCONN = 0x2, 162 SDP_MID_ABORT = 0x3, 163 SDP_MID_SENDSM = 0x4, 164 SDP_MID_RDMARDCOMPL = 0x6, 165 SDP_MID_SRCAVAIL_CANCEL = 0x8, 166 SDP_MID_CHRCVBUF = 0xB, 167 SDP_MID_CHRCVBUF_ACK = 0xC, 168 SDP_MID_SINKAVAIL = 0xFD, 169 SDP_MID_SRCAVAIL = 0xFE, 170 SDP_MID_DATA = 0xFF, 171}; 172 173enum sdp_flags { 174 SDP_OOB_PRES = 1 << 0, 175 SDP_OOB_PEND = 1 << 1, 176}; 177 178enum { 179 SDP_MIN_TX_CREDITS = 2 180}; 181 182enum { 183 SDP_ERR_ERROR = -4, 184 SDP_ERR_FAULT = -3, 185 SDP_NEW_SEG = -2, 186 SDP_DO_WAIT_MEM = -1 187}; 188 189struct sdp_bsdh { 190 u8 mid; 191 u8 flags; 192 __u16 bufs; 193 __u32 len; 194 __u32 mseq; 195 __u32 mseq_ack; 196} __attribute__((__packed__)); 197 198union cma_ip_addr { 199 struct in6_addr ip6; 200 struct { 201 __u32 pad[3]; 202 __u32 addr; 203 } ip4; 204} __attribute__((__packed__)); 205 206/* TODO: too much? Can I avoid having the src/dst and port here? */ 207struct sdp_hh { 208 struct sdp_bsdh bsdh; 209 u8 majv_minv; 210 u8 ipv_cap; 211 u8 rsvd1; 212 u8 max_adverts; 213 __u32 desremrcvsz; 214 __u32 localrcvsz; 215 __u16 port; 216 __u16 rsvd2; 217 union cma_ip_addr src_addr; 218 union cma_ip_addr dst_addr; 219 u8 rsvd3[IB_CM_REQ_PRIVATE_DATA_SIZE - sizeof(struct sdp_bsdh) - 48]; 220} __attribute__((__packed__)); 221 222struct sdp_hah { 223 struct sdp_bsdh bsdh; 224 u8 majv_minv; 225 u8 ipv_cap; 226 u8 rsvd1; 227 u8 ext_max_adverts; 228 __u32 actrcvsz; 229 u8 rsvd2[IB_CM_REP_PRIVATE_DATA_SIZE - sizeof(struct sdp_bsdh) - 8]; 230} __attribute__((__packed__)); 231 232struct sdp_rrch { 233 __u32 len; 234} __attribute__((__packed__)); 235 236struct sdp_srcah { 237 __u32 len; 238 __u32 rkey; 239 __u64 vaddr; 240} __attribute__((__packed__)); 241 242struct sdp_buf { 243 struct mbuf *mb; 244 u64 mapping[SDP_MAX_SEND_SGES]; 245} __attribute__((__packed__)); 246 247struct sdp_chrecvbuf { 248 u32 size; 249} __attribute__((__packed__)); 250 251/* Context used for synchronous zero copy bcopy (BZCOPY) */ 252struct bzcopy_state { 253 unsigned char __user *u_base; 254 int u_len; 255 int left; 256 int page_cnt; 257 int cur_page; 258 int cur_offset; 259 int busy; 260 struct sdp_sock *ssk; 261 struct page **pages; 262}; 263 264enum rx_sa_flag { 265 RX_SA_ABORTED = 2, 266}; 267 268enum tx_sa_flag { 269 TX_SA_SENDSM = 0x01, 270 TX_SA_CROSS_SEND = 0x02, 271 TX_SA_INTRRUPTED = 0x04, 272 TX_SA_TIMEDOUT = 0x08, 273 TX_SA_ERROR = 0x10, 274}; 275 276struct rx_srcavail_state { 277 /* Advertised buffer stuff */ 278 u32 mseq; 279 u32 used; 280 u32 reported; 281 u32 len; 282 u32 rkey; 283 u64 vaddr; 284 285 /* Dest buff info */ 286 struct ib_umem *umem; 287 struct ib_pool_fmr *fmr; 288 289 /* Utility */ 290 u8 busy; 291 enum rx_sa_flag flags; 292}; 293 294struct tx_srcavail_state { 295 /* Data below 'busy' will be reset */ 296 u8 busy; 297 298 struct ib_umem *umem; 299 struct ib_pool_fmr *fmr; 300 301 u32 bytes_sent; 302 u32 bytes_acked; 303 304 enum tx_sa_flag abort_flags; 305 u8 posted; 306 307 u32 mseq; 308}; 309 310struct sdp_tx_ring { 311#ifdef SDP_ZCOPY 312 struct rx_srcavail_state *rdma_inflight; 313#endif 314 struct sdp_buf *buffer; 315 atomic_t head; 316 atomic_t tail; 317 struct ib_cq *cq; 318 319 atomic_t credits; 320#define tx_credits(ssk) (atomic_read(&ssk->tx_ring.credits)) 321 322 struct callout timer; 323 u16 poll_cnt; 324}; 325 326struct sdp_rx_ring { 327 struct sdp_buf *buffer; 328 atomic_t head; 329 atomic_t tail; 330 struct ib_cq *cq; 331 332 int destroyed; 333 struct rwlock destroyed_lock; 334}; 335 336struct sdp_device { 337 struct ib_pd *pd; 338 struct ib_mr *mr; 339 struct ib_fmr_pool *fmr_pool; 340}; 341 342struct sdp_moderation { 343 unsigned long last_moder_packets; 344 unsigned long last_moder_tx_packets; 345 unsigned long last_moder_bytes; 346 unsigned long last_moder_jiffies; 347 int last_moder_time; 348 u16 rx_usecs; 349 u16 rx_frames; 350 u16 tx_usecs; 351 u32 pkt_rate_low; 352 u16 rx_usecs_low; 353 u32 pkt_rate_high; 354 u16 rx_usecs_high; 355 u16 sample_interval; 356 u16 adaptive_rx_coal; 357 u32 msg_enable; 358 359 int moder_cnt; 360 int moder_time; 361}; 362 363/* These are flags fields. */ 364#define SDP_TIMEWAIT 0x0001 /* In ssk timewait state. */ 365#define SDP_DROPPED 0x0002 /* Socket has been dropped. */ 366#define SDP_SOCKREF 0x0004 /* Holding a sockref for close. */ 367#define SDP_NODELAY 0x0008 /* Disble nagle. */ 368#define SDP_NEEDFIN 0x0010 /* Send a fin on the next tx. */ 369#define SDP_DREQWAIT 0x0020 /* Waiting on DREQ. */ 370#define SDP_DESTROY 0x0040 /* Being destroyed. */ 371#define SDP_DISCON 0x0080 /* rdma_disconnect is owed. */ 372 373/* These are oobflags */ 374#define SDP_HADOOB 0x0001 /* Had OOB data. */ 375#define SDP_HAVEOOB 0x0002 /* Have OOB data. */ 376 377struct sdp_sock { 378 LIST_ENTRY(sdp_sock) list; 379 struct socket *socket; 380 struct rdma_cm_id *id; 381 struct ib_device *ib_device; 382 struct sdp_device *sdp_dev; 383 struct ib_qp *qp; 384 struct ucred *cred; 385 struct callout keep2msl; /* 2msl and keepalive timer. */ 386 struct callout nagle_timer; /* timeout waiting for ack */ 387 struct ib_ucontext context; 388 in_port_t lport; 389 in_addr_t laddr; 390 in_port_t fport; 391 in_addr_t faddr; 392 int flags; 393 int oobflags; /* protected by rx lock. */ 394 int state; 395 int softerror; 396 int recv_bytes; /* Bytes per recv. buf including header */ 397 int xmit_size_goal; 398 char iobc; 399 400 struct sdp_rx_ring rx_ring; 401 struct sdp_tx_ring tx_ring; 402 struct rwlock lock; 403 struct mbuf *rx_ctl_q; 404 struct mbuf *rx_ctl_tail; 405 406 int qp_active; /* XXX Flag. */ 407 int max_sge; 408 struct work_struct rx_comp_work; 409#define rcv_nxt(ssk) atomic_read(&(ssk->rcv_nxt)) 410 atomic_t rcv_nxt; 411 412 /* SDP specific */ 413 atomic_t mseq_ack; 414#define mseq_ack(ssk) (atomic_read(&ssk->mseq_ack)) 415 unsigned max_bufs; /* Initial buffers offered by other side */ 416 unsigned min_bufs; /* Low water mark to wake senders */ 417 418 unsigned long nagle_last_unacked; /* mseq of lastest unacked packet */ 419 420 atomic_t remote_credits; 421#define remote_credits(ssk) (atomic_read(&ssk->remote_credits)) 422 int poll_cq; 423 424 /* SDP slow start */ 425 int recv_request_head; /* mark the rx_head when the resize request 426 was recieved */ 427 int recv_request; /* XXX flag if request to resize was recieved */ 428 429 unsigned long tx_packets; 430 unsigned long rx_packets; 431 unsigned long tx_bytes; 432 unsigned long rx_bytes; 433 struct sdp_moderation auto_mod; 434 struct task shutdown_task; 435#ifdef SDP_ZCOPY 436 struct tx_srcavail_state *tx_sa; 437 struct rx_srcavail_state *rx_sa; 438 spinlock_t tx_sa_lock; 439 struct delayed_work srcavail_cancel_work; 440 int srcavail_cancel_mseq; 441 /* ZCOPY data: -1:use global; 0:disable zcopy; >0: zcopy threshold */ 442 int zcopy_thresh; 443#endif 444}; 445 446#define sdp_sk(so) ((struct sdp_sock *)(so->so_pcb)) 447 448#define SDP_RLOCK(ssk) rw_rlock(&(ssk)->lock) 449#define SDP_WLOCK(ssk) rw_wlock(&(ssk)->lock) 450#define SDP_RUNLOCK(ssk) rw_runlock(&(ssk)->lock) 451#define SDP_WUNLOCK(ssk) rw_wunlock(&(ssk)->lock) 452#define SDP_WLOCK_ASSERT(ssk) rw_assert(&(ssk)->lock, RA_WLOCKED) 453#define SDP_RLOCK_ASSERT(ssk) rw_assert(&(ssk)->lock, RA_RLOCKED) 454#define SDP_LOCK_ASSERT(ssk) rw_assert(&(ssk)->lock, RA_LOCKED) 455 456static inline void tx_sa_reset(struct tx_srcavail_state *tx_sa) 457{ 458 memset((void *)&tx_sa->busy, 0, 459 sizeof(*tx_sa) - offsetof(typeof(*tx_sa), busy)); 460} 461 462static inline void rx_ring_unlock(struct sdp_rx_ring *rx_ring) 463{ 464 rw_runlock(&rx_ring->destroyed_lock); 465} 466 467static inline int rx_ring_trylock(struct sdp_rx_ring *rx_ring) 468{ 469 rw_rlock(&rx_ring->destroyed_lock); 470 if (rx_ring->destroyed) { 471 rx_ring_unlock(rx_ring); 472 return 0; 473 } 474 return 1; 475} 476 477static inline void rx_ring_destroy_lock(struct sdp_rx_ring *rx_ring) 478{ 479 rw_wlock(&rx_ring->destroyed_lock); 480 rx_ring->destroyed = 1; 481 rw_wunlock(&rx_ring->destroyed_lock); 482} 483 484static inline void sdp_arm_rx_cq(struct sdp_sock *ssk) 485{ 486 sdp_prf(ssk->socket, NULL, "Arming RX cq"); 487 sdp_dbg_data(ssk->socket, "Arming RX cq\n"); 488 489 ib_req_notify_cq(ssk->rx_ring.cq, IB_CQ_NEXT_COMP); 490} 491 492static inline void sdp_arm_tx_cq(struct sdp_sock *ssk) 493{ 494 sdp_prf(ssk->socket, NULL, "Arming TX cq"); 495 sdp_dbg_data(ssk->socket, "Arming TX cq. credits: %d, posted: %d\n", 496 tx_credits(ssk), tx_ring_posted(ssk)); 497 498 ib_req_notify_cq(ssk->tx_ring.cq, IB_CQ_NEXT_COMP); 499} 500 501/* return the min of: 502 * - tx credits 503 * - free slots in tx_ring (not including SDP_MIN_TX_CREDITS 504 */ 505static inline int tx_slots_free(struct sdp_sock *ssk) 506{ 507 int min_free; 508 509 min_free = MIN(tx_credits(ssk), 510 SDP_TX_SIZE - tx_ring_posted(ssk)); 511 if (min_free < SDP_MIN_TX_CREDITS) 512 return 0; 513 514 return min_free - SDP_MIN_TX_CREDITS; 515}; 516 517/* utilities */ 518static inline char *mid2str(int mid) 519{ 520#define ENUM2STR(e) [e] = #e 521 static char *mid2str[] = { 522 ENUM2STR(SDP_MID_HELLO), 523 ENUM2STR(SDP_MID_HELLO_ACK), 524 ENUM2STR(SDP_MID_ABORT), 525 ENUM2STR(SDP_MID_DISCONN), 526 ENUM2STR(SDP_MID_SENDSM), 527 ENUM2STR(SDP_MID_RDMARDCOMPL), 528 ENUM2STR(SDP_MID_SRCAVAIL_CANCEL), 529 ENUM2STR(SDP_MID_CHRCVBUF), 530 ENUM2STR(SDP_MID_CHRCVBUF_ACK), 531 ENUM2STR(SDP_MID_DATA), 532 ENUM2STR(SDP_MID_SRCAVAIL), 533 ENUM2STR(SDP_MID_SINKAVAIL), 534 }; 535 536 if (mid >= ARRAY_SIZE(mid2str)) 537 return NULL; 538 539 return mid2str[mid]; 540} 541 542static inline struct mbuf * 543sdp_alloc_mb(struct socket *sk, u8 mid, int size, int wait) 544{ 545 struct sdp_bsdh *h; 546 struct mbuf *mb; 547 548 MGETHDR(mb, wait, MT_DATA); 549 if (mb == NULL) 550 return (NULL); 551 mb->m_pkthdr.len = mb->m_len = sizeof(struct sdp_bsdh); 552 h = mtod(mb, struct sdp_bsdh *); 553 h->mid = mid; 554 555 return mb; 556} 557static inline struct mbuf * 558sdp_alloc_mb_data(struct socket *sk, int wait) 559{ 560 return sdp_alloc_mb(sk, SDP_MID_DATA, 0, wait); 561} 562 563static inline struct mbuf * 564sdp_alloc_mb_disconnect(struct socket *sk, int wait) 565{ 566 return sdp_alloc_mb(sk, SDP_MID_DISCONN, 0, wait); 567} 568 569static inline void * 570mb_put(struct mbuf *mb, int len) 571{ 572 uint8_t *data; 573 574 data = mb->m_data; 575 data += mb->m_len; 576 mb->m_len += len; 577 return (void *)data; 578} 579 580static inline struct mbuf * 581sdp_alloc_mb_chrcvbuf_ack(struct socket *sk, int size, int wait) 582{ 583 struct mbuf *mb; 584 struct sdp_chrecvbuf *resp_size; 585 586 mb = sdp_alloc_mb(sk, SDP_MID_CHRCVBUF_ACK, sizeof(*resp_size), wait); 587 if (mb == NULL) 588 return (NULL); 589 resp_size = (struct sdp_chrecvbuf *)mb_put(mb, sizeof *resp_size); 590 resp_size->size = htonl(size); 591 592 return mb; 593} 594 595static inline struct mbuf * 596sdp_alloc_mb_srcavail(struct socket *sk, u32 len, u32 rkey, u64 vaddr, int wait) 597{ 598 struct mbuf *mb; 599 struct sdp_srcah *srcah; 600 601 mb = sdp_alloc_mb(sk, SDP_MID_SRCAVAIL, sizeof(*srcah), wait); 602 if (mb == NULL) 603 return (NULL); 604 srcah = (struct sdp_srcah *)mb_put(mb, sizeof(*srcah)); 605 srcah->len = htonl(len); 606 srcah->rkey = htonl(rkey); 607 srcah->vaddr = cpu_to_be64(vaddr); 608 609 return mb; 610} 611 612static inline struct mbuf * 613sdp_alloc_mb_srcavail_cancel(struct socket *sk, int wait) 614{ 615 return sdp_alloc_mb(sk, SDP_MID_SRCAVAIL_CANCEL, 0, wait); 616} 617 618static inline struct mbuf * 619sdp_alloc_mb_rdmardcompl(struct socket *sk, u32 len, int wait) 620{ 621 struct mbuf *mb; 622 struct sdp_rrch *rrch; 623 624 mb = sdp_alloc_mb(sk, SDP_MID_RDMARDCOMPL, sizeof(*rrch), wait); 625 if (mb == NULL) 626 return (NULL); 627 rrch = (struct sdp_rrch *)mb_put(mb, sizeof(*rrch)); 628 rrch->len = htonl(len); 629 630 return mb; 631} 632 633static inline struct mbuf * 634sdp_alloc_mb_sendsm(struct socket *sk, int wait) 635{ 636 return sdp_alloc_mb(sk, SDP_MID_SENDSM, 0, wait); 637} 638static inline int sdp_tx_ring_slots_left(struct sdp_sock *ssk) 639{ 640 return SDP_TX_SIZE - tx_ring_posted(ssk); 641} 642 643static inline int credit_update_needed(struct sdp_sock *ssk) 644{ 645 int c; 646 647 c = remote_credits(ssk); 648 if (likely(c > SDP_MIN_TX_CREDITS)) 649 c += c/2; 650 return unlikely(c < rx_ring_posted(ssk)) && 651 likely(tx_credits(ssk) > 0) && 652 likely(sdp_tx_ring_slots_left(ssk)); 653} 654 655 656#define SDPSTATS_COUNTER_INC(stat) 657#define SDPSTATS_COUNTER_ADD(stat, val) 658#define SDPSTATS_COUNTER_MID_INC(stat, mid) 659#define SDPSTATS_HIST_LINEAR(stat, size) 660#define SDPSTATS_HIST(stat, size) 661 662static inline void 663sdp_cleanup_sdp_buf(struct sdp_sock *ssk, struct sdp_buf *sbuf, 664 enum dma_data_direction dir) 665{ 666 struct ib_device *dev; 667 struct mbuf *mb; 668 int i; 669 670 dev = ssk->ib_device; 671 for (i = 0, mb = sbuf->mb; mb != NULL; mb = mb->m_next, i++) 672 ib_dma_unmap_single(dev, sbuf->mapping[i], mb->m_len, dir); 673} 674 675/* sdp_main.c */ 676void sdp_set_default_moderation(struct sdp_sock *ssk); 677void sdp_start_keepalive_timer(struct socket *sk); 678void sdp_urg(struct sdp_sock *ssk, struct mbuf *mb); 679void sdp_cancel_dreq_wait_timeout(struct sdp_sock *ssk); 680void sdp_abort(struct socket *sk); 681struct sdp_sock *sdp_notify(struct sdp_sock *ssk, int error); 682 683 684/* sdp_cma.c */ 685int sdp_cma_handler(struct rdma_cm_id *, struct rdma_cm_event *); 686 687/* sdp_tx.c */ 688int sdp_tx_ring_create(struct sdp_sock *ssk, struct ib_device *device); 689void sdp_tx_ring_destroy(struct sdp_sock *ssk); 690int sdp_xmit_poll(struct sdp_sock *ssk, int force); 691void sdp_post_send(struct sdp_sock *ssk, struct mbuf *mb); 692void sdp_post_sends(struct sdp_sock *ssk, int wait); 693void sdp_post_keepalive(struct sdp_sock *ssk); 694 695/* sdp_rx.c */ 696void sdp_rx_ring_init(struct sdp_sock *ssk); 697int sdp_rx_ring_create(struct sdp_sock *ssk, struct ib_device *device); 698void sdp_rx_ring_destroy(struct sdp_sock *ssk); 699int sdp_resize_buffers(struct sdp_sock *ssk, u32 new_size); 700int sdp_init_buffers(struct sdp_sock *ssk, u32 new_size); 701void sdp_do_posts(struct sdp_sock *ssk); 702void sdp_rx_comp_full(struct sdp_sock *ssk); 703 704/* sdp_zcopy.c */ 705struct kiocb; 706int sdp_sendmsg_zcopy(struct kiocb *iocb, struct socket *sk, struct iovec *iov); 707int sdp_handle_srcavail(struct sdp_sock *ssk, struct sdp_srcah *srcah); 708void sdp_handle_sendsm(struct sdp_sock *ssk, u32 mseq_ack); 709void sdp_handle_rdma_read_compl(struct sdp_sock *ssk, u32 mseq_ack, 710 u32 bytes_completed); 711int sdp_handle_rdma_read_cqe(struct sdp_sock *ssk); 712int sdp_rdma_to_iovec(struct socket *sk, struct iovec *iov, struct mbuf *mb, 713 unsigned long *used); 714int sdp_post_rdma_rd_compl(struct sdp_sock *ssk, 715 struct rx_srcavail_state *rx_sa); 716int sdp_post_sendsm(struct socket *sk); 717void srcavail_cancel_timeout(struct work_struct *work); 718void sdp_abort_srcavail(struct socket *sk); 719void sdp_abort_rdma_read(struct socket *sk); 720int sdp_process_rx(struct sdp_sock *ssk); 721 722#endif 723