Lines Matching refs:conn
48 if (atomic_read(&smc->conn.sndbuf_space) && sock) {
50 SMC_STAT_RMB_TX_FULL(smc, !smc->conn.lnk);
80 struct smc_connection *conn = &smc->conn;
92 conn->killed ||
93 conn->local_tx_ctrl.conn_state_flags.peer_done_writing) {
97 if (smc_cdc_rxed_any_close(conn)) {
112 if (atomic_read(&conn->sndbuf_space) && !conn->urg_tx_pend)
118 smc_cdc_rxed_any_close(conn) ||
119 (atomic_read(&conn->sndbuf_space) &&
120 !conn->urg_tx_pend),
147 struct smc_connection *conn = &smc->conn;
150 corking_size = min_t(unsigned int, conn->sndbuf_desc->len >> 1,
153 if (atomic_read(&conn->cdc_pend_tx_wr) == 0 ||
154 smc_tx_prepared_sends(conn) > corking_size)
161 struct smc_connection *conn = &smc->conn;
172 atomic_read(&conn->sndbuf_space))
185 struct smc_connection *conn = &smc->conn;
204 if (len > conn->sndbuf_desc->len)
205 SMC_STAT_RMB_TX_SIZE_SMALL(smc, !conn->lnk);
207 if (len > conn->peer_rmbe_size)
208 SMC_STAT_RMB_TX_PEER_SIZE_SMALL(smc, !conn->lnk);
216 conn->killed)
218 if (smc_cdc_rxed_any_close(conn))
222 conn->local_tx_ctrl.prod_flags.urg_data_pending = 1;
224 if (!atomic_read(&conn->sndbuf_space) || conn->urg_tx_pend) {
235 writespace = atomic_read(&conn->sndbuf_space);
239 sndbuf_base = conn->sndbuf_desc->cpu_addr;
240 smc_curs_copy(&prep, &conn->tx_curs_prep, conn);
244 chunk_len = min_t(size_t, copylen, conn->sndbuf_desc->len -
252 smc_sndbuf_sync_sg_for_device(conn);
267 smc_sndbuf_sync_sg_for_device(conn);
269 smc_curs_add(conn->sndbuf_desc->len, &prep, copylen);
270 smc_curs_copy(&conn->tx_curs_prep, &prep, conn);
273 atomic_sub(copylen, &conn->sndbuf_space);
280 conn->urg_tx_pend = true;
285 smc_tx_sndbuf_nonempty(conn);
303 int smcd_tx_ism_write(struct smc_connection *conn, void *data, size_t len,
308 rc = smc_ism_write(conn->lgr->smcd, conn->peer_token,
309 conn->peer_rmbe_idx, signal, conn->tx_off + offset,
312 conn->local_tx_ctrl.conn_state_flags.peer_conn_abort = 1;
317 static int smc_tx_rdma_write(struct smc_connection *conn, int peer_rmbe_offset,
320 struct smc_link_group *lgr = conn->lgr;
321 struct smc_link *link = conn->lnk;
327 lgr->rtokens[conn->rtoken_idx][link->link_idx].dma_addr +
329 conn->tx_off +
332 rdma_wr->rkey = lgr->rtokens[conn->rtoken_idx][link->link_idx].rkey;
340 static inline void smc_tx_advance_cursors(struct smc_connection *conn,
345 smc_curs_add(conn->peer_rmbe_size, prod, len);
349 atomic_sub(len, &conn->peer_rmbe_space);
352 smc_curs_add(conn->sndbuf_desc->len, sent, len);
356 static int smcr_tx_rdma_writes(struct smc_connection *conn, size_t len,
361 struct smc_link *link = conn->lnk;
364 sg_dma_address(conn->sndbuf_desc->sgt[link->link_idx].sgl);
365 u64 virt_addr = (uintptr_t)conn->sndbuf_desc->cpu_addr;
386 sge[srcchunk].addr = conn->sndbuf_desc->is_vm ?
389 if (conn->sndbuf_desc->is_vm)
391 conn->sndbuf_desc->mr[link->link_idx]->lkey;
395 if (src_off >= conn->sndbuf_desc->len)
396 src_off -= conn->sndbuf_desc->len;
404 rc = smc_tx_rdma_write(conn, dst_off, num_sges, wr);
413 src_len = min_t(int, dst_len, conn->sndbuf_desc->len -
421 static int smcd_tx_rdma_writes(struct smc_connection *conn, size_t len,
431 void *data = conn->sndbuf_desc->cpu_addr + src_off;
433 rc = smcd_tx_ism_write(conn, data, src_len, dst_off +
439 if (src_off >= conn->sndbuf_desc->len)
440 src_off -= conn->sndbuf_desc->len;
454 src_len = min_t(int, dst_len, conn->sndbuf_desc->len - src_off);
463 static int smc_tx_rdma_writes(struct smc_connection *conn,
473 smc_curs_copy(&sent, &conn->tx_curs_sent, conn);
474 smc_curs_copy(&prep, &conn->tx_curs_prep, conn);
476 to_send = smc_curs_diff(conn->sndbuf_desc->len, &sent, &prep);
482 rmbespace = atomic_read(&conn->peer_rmbe_space);
484 struct smc_sock *smc = container_of(conn, struct smc_sock,
485 conn);
486 SMC_STAT_RMB_TX_PEER_FULL(smc, !conn->lnk);
489 smc_curs_copy(&prod, &conn->local_tx_ctrl.prod, conn);
490 smc_curs_copy(&cons, &conn->local_rx_ctrl.cons, conn);
493 pflags = &conn->local_tx_ctrl.prod_flags;
507 conn->peer_rmbe_size - prod.count, len);
516 if (sent.count + dst_len <= conn->sndbuf_desc->len) {
521 src_len = conn->sndbuf_desc->len - sent.count;
524 if (conn->lgr->is_smcd)
525 rc = smcd_tx_rdma_writes(conn, len, sent.count, src_len,
528 rc = smcr_tx_rdma_writes(conn, len, sent.count, src_len,
533 if (conn->urg_tx_pend && len == to_send)
535 smc_tx_advance_cursors(conn, &prod, &sent, len);
537 smc_curs_copy(&conn->local_tx_ctrl.prod, &prod, conn);
539 smc_curs_copy(&conn->tx_curs_sent, &sent, conn);/* src: local sndbuf */
547 static int smcr_tx_sndbuf_nonempty(struct smc_connection *conn)
549 struct smc_cdc_producer_flags *pflags = &conn->local_tx_ctrl.prod_flags;
550 struct smc_link *link = conn->lnk;
558 rc = smc_cdc_get_free_slot(conn, link, &wr_buf, &wr_rdma_buf, &pend);
563 container_of(conn, struct smc_sock, conn);
567 if (conn->killed)
570 mod_delayed_work(conn->lgr->tx_wq, &conn->tx_work,
576 spin_lock_bh(&conn->send_lock);
577 if (link != conn->lnk) {
585 rc = smc_tx_rdma_writes(conn, wr_rdma_buf);
593 rc = smc_cdc_msg_send(conn, wr_buf, pend);
600 spin_unlock_bh(&conn->send_lock);
605 static int smcd_tx_sndbuf_nonempty(struct smc_connection *conn)
607 struct smc_cdc_producer_flags *pflags = &conn->local_tx_ctrl.prod_flags;
610 spin_lock_bh(&conn->send_lock);
612 rc = smc_tx_rdma_writes(conn, NULL);
614 rc = smcd_cdc_msg_send(conn);
620 spin_unlock_bh(&conn->send_lock);
624 int smc_tx_sndbuf_nonempty(struct smc_connection *conn)
626 struct smc_sock *smc = container_of(conn, struct smc_sock, conn);
630 if (unlikely(smc_tx_prepared_sends(conn) <= 0))
634 if (unlikely(atomic_read(&conn->peer_rmbe_space) <= 0)) {
635 SMC_STAT_RMB_TX_PEER_FULL(smc, !conn->lnk);
639 if (conn->killed ||
640 conn->local_rx_ctrl.conn_state_flags.peer_conn_abort) {
644 if (conn->lgr->is_smcd)
645 rc = smcd_tx_sndbuf_nonempty(conn);
647 rc = smcr_tx_sndbuf_nonempty(conn);
662 void smc_tx_pending(struct smc_connection *conn)
664 struct smc_sock *smc = container_of(conn, struct smc_sock, conn);
670 rc = smc_tx_sndbuf_nonempty(conn);
671 if (!rc && conn->local_rx_ctrl.prod_flags.write_blocked &&
672 !atomic_read(&conn->bytes_to_rcv))
673 conn->local_rx_ctrl.prod_flags.write_blocked = 0;
682 struct smc_connection *conn = container_of(to_delayed_work(work),
685 struct smc_sock *smc = container_of(conn, struct smc_sock, conn);
688 smc_tx_pending(conn);
692 void smc_tx_consumer_update(struct smc_connection *conn, bool force)
695 int sender_free = conn->rmb_desc->len;
698 smc_curs_copy(&cons, &conn->local_tx_ctrl.cons, conn);
699 smc_curs_copy(&cfed, &conn->rx_curs_confirmed, conn);
700 to_confirm = smc_curs_diff(conn->rmb_desc->len, &cfed, &cons);
701 if (to_confirm > conn->rmbe_update_limit) {
702 smc_curs_copy(&prod, &conn->local_rx_ctrl.prod, conn);
703 sender_free = conn->rmb_desc->len -
704 smc_curs_diff_large(conn->rmb_desc->len,
708 if (conn->local_rx_ctrl.prod_flags.cons_curs_upd_req ||
710 ((to_confirm > conn->rmbe_update_limit) &&
711 ((sender_free <= (conn->rmb_desc->len / 2)) ||
712 conn->local_rx_ctrl.prod_flags.write_blocked))) {
713 if (conn->killed ||
714 conn->local_rx_ctrl.conn_state_flags.peer_conn_abort)
716 if ((smc_cdc_get_slot_and_msg_send(conn) < 0) &&
717 !conn->killed) {
718 queue_delayed_work(conn->lgr->tx_wq, &conn->tx_work,
723 if (conn->local_rx_ctrl.prod_flags.write_blocked &&
724 !atomic_read(&conn->bytes_to_rcv))
725 conn->local_rx_ctrl.prod_flags.write_blocked = 0;