Lines Matching refs:conn
47 if (atomic_read(&smc->conn.sndbuf_space) && sock) {
77 struct smc_connection *conn = &smc->conn;
89 conn->killed ||
90 conn->local_tx_ctrl.conn_state_flags.peer_done_writing) {
94 if (smc_cdc_rxed_any_close(conn)) {
109 if (atomic_read(&conn->sndbuf_space) && !conn->urg_tx_pend)
115 smc_cdc_rxed_any_close(conn) ||
116 (atomic_read(&conn->sndbuf_space) &&
117 !conn->urg_tx_pend),
138 struct smc_connection *conn = &smc->conn;
159 conn->killed)
161 if (smc_cdc_rxed_any_close(conn))
165 conn->local_tx_ctrl.prod_flags.urg_data_pending = 1;
167 if (!atomic_read(&conn->sndbuf_space) || conn->urg_tx_pend) {
178 writespace = atomic_read(&conn->sndbuf_space);
182 sndbuf_base = conn->sndbuf_desc->cpu_addr;
183 smc_curs_copy(&prep, &conn->tx_curs_prep, conn);
187 chunk_len = min_t(size_t, copylen, conn->sndbuf_desc->len -
191 smc_sndbuf_sync_sg_for_cpu(conn);
196 smc_sndbuf_sync_sg_for_device(conn);
211 smc_sndbuf_sync_sg_for_device(conn);
213 smc_curs_add(conn->sndbuf_desc->len, &prep, copylen);
214 smc_curs_copy(&conn->tx_curs_prep, &prep, conn);
217 atomic_sub(copylen, &conn->sndbuf_space);
224 conn->urg_tx_pend = true;
226 (atomic_read(&conn->sndbuf_space) >
227 (conn->sndbuf_desc->len >> 1)))
231 queue_delayed_work(conn->lgr->tx_wq, &conn->tx_work,
234 smc_tx_sndbuf_nonempty(conn);
250 int smcd_tx_ism_write(struct smc_connection *conn, void *data, size_t len,
257 pos.token = conn->peer_token;
258 pos.index = conn->peer_rmbe_idx;
259 pos.offset = conn->tx_off + offset;
261 rc = smc_ism_write(conn->lgr->smcd, &pos, data, len);
263 conn->local_tx_ctrl.conn_state_flags.peer_conn_abort = 1;
268 static int smc_tx_rdma_write(struct smc_connection *conn, int peer_rmbe_offset,
271 struct smc_link_group *lgr = conn->lgr;
272 struct smc_link *link = conn->lnk;
278 lgr->rtokens[conn->rtoken_idx][link->link_idx].dma_addr +
280 conn->tx_off +
283 rdma_wr->rkey = lgr->rtokens[conn->rtoken_idx][link->link_idx].rkey;
291 static inline void smc_tx_advance_cursors(struct smc_connection *conn,
296 smc_curs_add(conn->peer_rmbe_size, prod, len);
300 atomic_sub(len, &conn->peer_rmbe_space);
303 smc_curs_add(conn->sndbuf_desc->len, sent, len);
307 static int smcr_tx_rdma_writes(struct smc_connection *conn, size_t len,
312 struct smc_link *link = conn->lnk;
315 sg_dma_address(conn->sndbuf_desc->sgt[link->link_idx].sgl);
333 if (src_off >= conn->sndbuf_desc->len)
334 src_off -= conn->sndbuf_desc->len;
342 rc = smc_tx_rdma_write(conn, dst_off, num_sges,
352 src_len = min_t(int, dst_len, conn->sndbuf_desc->len -
360 static int smcd_tx_rdma_writes(struct smc_connection *conn, size_t len,
370 void *data = conn->sndbuf_desc->cpu_addr + src_off;
372 rc = smcd_tx_ism_write(conn, data, src_len, dst_off +
378 if (src_off >= conn->sndbuf_desc->len)
379 src_off -= conn->sndbuf_desc->len;
393 src_len = min_t(int, dst_len, conn->sndbuf_desc->len - src_off);
402 static int smc_tx_rdma_writes(struct smc_connection *conn,
412 smc_curs_copy(&sent, &conn->tx_curs_sent, conn);
413 smc_curs_copy(&prep, &conn->tx_curs_prep, conn);
415 to_send = smc_curs_diff(conn->sndbuf_desc->len, &sent, &prep);
421 rmbespace = atomic_read(&conn->peer_rmbe_space);
424 smc_curs_copy(&prod, &conn->local_tx_ctrl.prod, conn);
425 smc_curs_copy(&cons, &conn->local_rx_ctrl.cons, conn);
428 pflags = &conn->local_tx_ctrl.prod_flags;
442 conn->peer_rmbe_size - prod.count, len);
451 if (sent.count + dst_len <= conn->sndbuf_desc->len) {
456 src_len = conn->sndbuf_desc->len - sent.count;
459 if (conn->lgr->is_smcd)
460 rc = smcd_tx_rdma_writes(conn, len, sent.count, src_len,
463 rc = smcr_tx_rdma_writes(conn, len, sent.count, src_len,
468 if (conn->urg_tx_pend && len == to_send)
470 smc_tx_advance_cursors(conn, &prod, &sent, len);
472 smc_curs_copy(&conn->local_tx_ctrl.prod, &prod, conn);
474 smc_curs_copy(&conn->tx_curs_sent, &sent, conn);/* src: local sndbuf */
482 static int smcr_tx_sndbuf_nonempty(struct smc_connection *conn)
484 struct smc_cdc_producer_flags *pflags = &conn->local_tx_ctrl.prod_flags;
485 struct smc_link *link = conn->lnk;
493 rc = smc_cdc_get_free_slot(conn, link, &wr_buf, &wr_rdma_buf, &pend);
498 container_of(conn, struct smc_sock, conn);
502 if (conn->killed)
505 mod_delayed_work(conn->lgr->tx_wq, &conn->tx_work,
511 spin_lock_bh(&conn->send_lock);
512 if (link != conn->lnk) {
520 rc = smc_tx_rdma_writes(conn, wr_rdma_buf);
528 rc = smc_cdc_msg_send(conn, wr_buf, pend);
535 spin_unlock_bh(&conn->send_lock);
540 static int smcd_tx_sndbuf_nonempty(struct smc_connection *conn)
542 struct smc_cdc_producer_flags *pflags = &conn->local_tx_ctrl.prod_flags;
545 spin_lock_bh(&conn->send_lock);
547 rc = smc_tx_rdma_writes(conn, NULL);
549 rc = smcd_cdc_msg_send(conn);
555 spin_unlock_bh(&conn->send_lock);
559 int smc_tx_sndbuf_nonempty(struct smc_connection *conn)
563 if (conn->killed ||
564 conn->local_rx_ctrl.conn_state_flags.peer_conn_abort)
566 if (conn->lgr->is_smcd)
567 rc = smcd_tx_sndbuf_nonempty(conn);
569 rc = smcr_tx_sndbuf_nonempty(conn);
573 struct smc_sock *smc = container_of(conn, struct smc_sock,
574 conn);
585 struct smc_connection *conn = container_of(to_delayed_work(work),
588 struct smc_sock *smc = container_of(conn, struct smc_sock, conn);
595 rc = smc_tx_sndbuf_nonempty(conn);
596 if (!rc && conn->local_rx_ctrl.prod_flags.write_blocked &&
597 !atomic_read(&conn->bytes_to_rcv))
598 conn->local_rx_ctrl.prod_flags.write_blocked = 0;
604 void smc_tx_consumer_update(struct smc_connection *conn, bool force)
607 int sender_free = conn->rmb_desc->len;
610 smc_curs_copy(&cons, &conn->local_tx_ctrl.cons, conn);
611 smc_curs_copy(&cfed, &conn->rx_curs_confirmed, conn);
612 to_confirm = smc_curs_diff(conn->rmb_desc->len, &cfed, &cons);
613 if (to_confirm > conn->rmbe_update_limit) {
614 smc_curs_copy(&prod, &conn->local_rx_ctrl.prod, conn);
615 sender_free = conn->rmb_desc->len -
616 smc_curs_diff_large(conn->rmb_desc->len,
620 if (conn->local_rx_ctrl.prod_flags.cons_curs_upd_req ||
622 ((to_confirm > conn->rmbe_update_limit) &&
623 ((sender_free <= (conn->rmb_desc->len / 2)) ||
624 conn->local_rx_ctrl.prod_flags.write_blocked))) {
625 if (conn->killed ||
626 conn->local_rx_ctrl.conn_state_flags.peer_conn_abort)
628 if ((smc_cdc_get_slot_and_msg_send(conn) < 0) &&
629 !conn->killed) {
630 queue_delayed_work(conn->lgr->tx_wq, &conn->tx_work,
635 if (conn->local_rx_ctrl.prod_flags.write_blocked &&
636 !atomic_read(&conn->bytes_to_rcv))
637 conn->local_rx_ctrl.prod_flags.write_blocked = 0;