X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lnet%2Fklnds%2Fsocklnd%2Fsocklnd_cb.c;h=84396529992733be57f77010a441e79e6bee8ff5;hp=17c889f451973b00b3ed0ca6d8b4bec85ee998b6;hb=d720fbaadad9343a481863ae3b04ba580541328d;hpb=05ad99f1f3a9f85756bf3355505722bb4f20f420 diff --git a/lnet/klnds/socklnd/socklnd_cb.c b/lnet/klnds/socklnd/socklnd_cb.c index 17c889f..8439652 100644 --- a/lnet/klnds/socklnd/socklnd_cb.c +++ b/lnet/klnds/socklnd/socklnd_cb.c @@ -1,14 +1,14 @@ /* * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. * - * Copyright (c) 2011, 2014, Intel Corporation. + * Copyright (c) 2011, 2017, Intel Corporation. * * Author: Zach Brown * Author: Peter J. Braam * Author: Phil Schwan * Author: Eric Barton * - * This file is part of Lustre, https://wiki.hpdd.intel.com/ + * This file is part of Lustre, https://wiki.whamcloud.com/ * * Portals is free software; you can redistribute it and/or * modify it under the terms of version 2 of the GNU General Public @@ -26,10 +26,10 @@ #include "socklnd.h" -ksock_tx_t * +struct ksock_tx * ksocknal_alloc_tx(int type, int size) { - ksock_tx_t *tx = NULL; + struct ksock_tx *tx = NULL; if (type == KSOCK_MSG_NOOP) { LASSERT(size == KSOCK_NOOP_TX_SIZE); @@ -38,8 +38,8 @@ ksocknal_alloc_tx(int type, int size) spin_lock(&ksocknal_data.ksnd_tx_lock); if (!list_empty(&ksocknal_data.ksnd_idle_noop_txs)) { - tx = list_entry(ksocknal_data.ksnd_idle_noop_txs. \ - next, ksock_tx_t, tx_list); + tx = list_entry(ksocknal_data.ksnd_idle_noop_txs.next, + struct ksock_tx, tx_list); LASSERT(tx->tx_desc_size == size); list_del(&tx->tx_list); } @@ -57,6 +57,7 @@ ksocknal_alloc_tx(int type, int size) tx->tx_zc_aborted = 0; tx->tx_zc_capable = 0; tx->tx_zc_checked = 0; + tx->tx_hstatus = LNET_MSG_STATUS_OK; tx->tx_desc_size = size; atomic_inc(&ksocknal_data.ksnd_nactive_txs); @@ -64,10 +65,10 @@ ksocknal_alloc_tx(int type, int size) return tx; } -ksock_tx_t * +struct ksock_tx * ksocknal_alloc_tx_noop(__u64 cookie, int nonblk) { - ksock_tx_t *tx; + struct ksock_tx *tx; tx = ksocknal_alloc_tx(KSOCK_MSG_NOOP, KSOCK_NOOP_TX_SIZE); if (tx == NULL) { @@ -93,7 +94,7 @@ ksocknal_alloc_tx_noop(__u64 cookie, int nonblk) void -ksocknal_free_tx (ksock_tx_t *tx) +ksocknal_free_tx(struct ksock_tx *tx) { atomic_dec(&ksocknal_data.ksnd_nactive_txs); @@ -110,336 +111,363 @@ ksocknal_free_tx (ksock_tx_t *tx) } static int -ksocknal_send_iov (ksock_conn_t *conn, ksock_tx_t *tx) +ksocknal_send_iov(struct ksock_conn *conn, struct ksock_tx *tx, + struct kvec *scratch_iov) { struct kvec *iov = tx->tx_iov; - int nob; - int rc; + int nob; + int rc; - LASSERT (tx->tx_niov > 0); + LASSERT(tx->tx_niov > 0); - /* Never touch tx->tx_iov inside ksocknal_lib_send_iov() */ - rc = ksocknal_lib_send_iov(conn, tx); + /* Never touch tx->tx_iov inside ksocknal_lib_send_iov() */ + rc = ksocknal_lib_send_iov(conn, tx, scratch_iov); - if (rc <= 0) /* sent nothing? */ - return (rc); + if (rc <= 0) /* sent nothing? */ + return rc; - nob = rc; - LASSERT (nob <= tx->tx_resid); - tx->tx_resid -= nob; + nob = rc; + LASSERT(nob <= tx->tx_resid); + tx->tx_resid -= nob; - /* "consume" iov */ - do { - LASSERT (tx->tx_niov > 0); + /* "consume" iov */ + do { + LASSERT(tx->tx_niov > 0); - if (nob < (int) iov->iov_len) { + if (nob < (int) iov->iov_len) { iov->iov_base += nob; - iov->iov_len -= nob; - return (rc); - } + iov->iov_len -= nob; + return rc; + } - nob -= iov->iov_len; - tx->tx_iov = ++iov; - tx->tx_niov--; - } while (nob != 0); + nob -= iov->iov_len; + tx->tx_iov = ++iov; + tx->tx_niov--; + } while (nob != 0); - return (rc); + return rc; } static int -ksocknal_send_kiov (ksock_conn_t *conn, ksock_tx_t *tx) +ksocknal_send_kiov(struct ksock_conn *conn, struct ksock_tx *tx, + struct kvec *scratch_iov) { - lnet_kiov_t *kiov = tx->tx_kiov; - int nob; - int rc; + struct bio_vec *kiov = tx->tx_kiov; + int nob; + int rc; - LASSERT (tx->tx_niov == 0); - LASSERT (tx->tx_nkiov > 0); + LASSERT(tx->tx_niov == 0); + LASSERT(tx->tx_nkiov > 0); - /* Never touch tx->tx_kiov inside ksocknal_lib_send_kiov() */ - rc = ksocknal_lib_send_kiov(conn, tx); + /* Never touch tx->tx_kiov inside ksocknal_lib_send_kiov() */ + rc = ksocknal_lib_send_kiov(conn, tx, scratch_iov); - if (rc <= 0) /* sent nothing? */ - return (rc); + if (rc <= 0) /* sent nothing? */ + return rc; - nob = rc; - LASSERT (nob <= tx->tx_resid); - tx->tx_resid -= nob; + nob = rc; + LASSERT(nob <= tx->tx_resid); + tx->tx_resid -= nob; - /* "consume" kiov */ - do { - LASSERT(tx->tx_nkiov > 0); + /* "consume" kiov */ + do { + LASSERT(tx->tx_nkiov > 0); - if (nob < (int)kiov->kiov_len) { - kiov->kiov_offset += nob; - kiov->kiov_len -= nob; - return rc; - } + if (nob < (int)kiov->bv_len) { + kiov->bv_offset += nob; + kiov->bv_len -= nob; + return rc; + } - nob -= (int)kiov->kiov_len; - tx->tx_kiov = ++kiov; - tx->tx_nkiov--; - } while (nob != 0); + nob -= (int)kiov->bv_len; + tx->tx_kiov = ++kiov; + tx->tx_nkiov--; + } while (nob != 0); - return (rc); + return rc; } static int -ksocknal_transmit(ksock_conn_t *conn, ksock_tx_t *tx) +ksocknal_transmit(struct ksock_conn *conn, struct ksock_tx *tx, + struct kvec *scratch_iov) { int rc; int bufnob; - if (ksocknal_data.ksnd_stall_tx != 0) { - set_current_state(TASK_UNINTERRUPTIBLE); - schedule_timeout(cfs_time_seconds(ksocknal_data.ksnd_stall_tx)); - } + if (ksocknal_data.ksnd_stall_tx != 0) + schedule_timeout_uninterruptible( + cfs_time_seconds(ksocknal_data.ksnd_stall_tx)); LASSERT(tx->tx_resid != 0); - rc = ksocknal_connsock_addref(conn); - if (rc != 0) { - LASSERT (conn->ksnc_closing); - return (-ESHUTDOWN); - } + rc = ksocknal_connsock_addref(conn); + if (rc != 0) { + LASSERT(conn->ksnc_closing); + return -ESHUTDOWN; + } - do { - if (ksocknal_data.ksnd_enomem_tx > 0) { - /* testing... */ - ksocknal_data.ksnd_enomem_tx--; - rc = -EAGAIN; - } else if (tx->tx_niov != 0) { - rc = ksocknal_send_iov (conn, tx); - } else { - rc = ksocknal_send_kiov (conn, tx); - } + do { + if (ksocknal_data.ksnd_enomem_tx > 0) { + /* testing... */ + ksocknal_data.ksnd_enomem_tx--; + rc = -EAGAIN; + } else if (tx->tx_niov != 0) { + rc = ksocknal_send_iov(conn, tx, scratch_iov); + } else { + rc = ksocknal_send_kiov(conn, tx, scratch_iov); + } bufnob = conn->ksnc_sock->sk->sk_wmem_queued; - if (rc > 0) /* sent something? */ - conn->ksnc_tx_bufnob += rc; /* account it */ + if (rc > 0) /* sent something? */ + conn->ksnc_tx_bufnob += rc; /* account it */ if (bufnob < conn->ksnc_tx_bufnob) { /* allocated send buffer bytes < computed; infer * something got ACKed */ - conn->ksnc_tx_deadline = - cfs_time_shift(*ksocknal_tunables.ksnd_timeout); - conn->ksnc_peer->ksnp_last_alive = cfs_time_current(); + conn->ksnc_tx_deadline = ktime_get_seconds() + + lnet_get_lnd_timeout(); + conn->ksnc_peer->ksnp_last_alive = ktime_get_seconds(); conn->ksnc_tx_bufnob = bufnob; smp_mb(); } if (rc <= 0) { /* Didn't write anything? */ + /* some stacks return 0 instead of -EAGAIN */ + if (rc == 0) + rc = -EAGAIN; - if (rc == 0) /* some stacks return 0 instead of -EAGAIN */ - rc = -EAGAIN; - - /* Check if EAGAIN is due to memory pressure */ - if(rc == -EAGAIN && ksocknal_lib_memory_pressure(conn)) - rc = -ENOMEM; + /* Check if EAGAIN is due to memory pressure */ + if (rc == -EAGAIN && ksocknal_lib_memory_pressure(conn)) + rc = -ENOMEM; - break; - } + break; + } - /* socket's wmem_queued now includes 'rc' bytes */ + /* socket's wmem_queued now includes 'rc' bytes */ atomic_sub (rc, &conn->ksnc_tx_nob); - rc = 0; + rc = 0; - } while (tx->tx_resid != 0); + } while (tx->tx_resid != 0); - ksocknal_connsock_decref(conn); - return (rc); + ksocknal_connsock_decref(conn); + return rc; } static int -ksocknal_recv_iov (ksock_conn_t *conn) +ksocknal_recv_iov(struct ksock_conn *conn, struct kvec *scratchiov) { struct kvec *iov = conn->ksnc_rx_iov; - int nob; - int rc; + int nob; + int rc; - LASSERT (conn->ksnc_rx_niov > 0); + LASSERT(conn->ksnc_rx_niov > 0); /* Never touch conn->ksnc_rx_iov or change connection - * status inside ksocknal_lib_recv_iov */ - rc = ksocknal_lib_recv_iov(conn); + * status inside ksocknal_lib_recv_iov */ + rc = ksocknal_lib_recv_iov(conn, scratchiov); - if (rc <= 0) - return (rc); + if (rc <= 0) + return rc; - /* received something... */ - nob = rc; + /* received something... */ + nob = rc; - conn->ksnc_peer->ksnp_last_alive = cfs_time_current(); - conn->ksnc_rx_deadline = - cfs_time_shift(*ksocknal_tunables.ksnd_timeout); + conn->ksnc_peer->ksnp_last_alive = ktime_get_seconds(); + conn->ksnc_rx_deadline = ktime_get_seconds() + + lnet_get_lnd_timeout(); smp_mb(); /* order with setting rx_started */ conn->ksnc_rx_started = 1; conn->ksnc_rx_nob_wanted -= nob; conn->ksnc_rx_nob_left -= nob; - do { - LASSERT (conn->ksnc_rx_niov > 0); + do { + LASSERT(conn->ksnc_rx_niov > 0); - if (nob < (int)iov->iov_len) { - iov->iov_len -= nob; + if (nob < (int)iov->iov_len) { + iov->iov_len -= nob; iov->iov_base += nob; - return (-EAGAIN); - } + return -EAGAIN; + } - nob -= iov->iov_len; - conn->ksnc_rx_iov = ++iov; - conn->ksnc_rx_niov--; - } while (nob != 0); + nob -= iov->iov_len; + conn->ksnc_rx_iov = ++iov; + conn->ksnc_rx_niov--; + } while (nob != 0); - return (rc); + return rc; } static int -ksocknal_recv_kiov (ksock_conn_t *conn) +ksocknal_recv_kiov(struct ksock_conn *conn, struct page **rx_scratch_pgs, + struct kvec *scratch_iov) { - lnet_kiov_t *kiov = conn->ksnc_rx_kiov; - int nob; - int rc; - LASSERT (conn->ksnc_rx_nkiov > 0); + struct bio_vec *kiov = conn->ksnc_rx_kiov; + int nob; + int rc; + LASSERT(conn->ksnc_rx_nkiov > 0); /* Never touch conn->ksnc_rx_kiov or change connection - * status inside ksocknal_lib_recv_iov */ - rc = ksocknal_lib_recv_kiov(conn); + * status inside ksocknal_lib_recv_iov */ + rc = ksocknal_lib_recv_kiov(conn, rx_scratch_pgs, scratch_iov); - if (rc <= 0) - return (rc); + if (rc <= 0) + return rc; - /* received something... */ - nob = rc; + /* received something... */ + nob = rc; - conn->ksnc_peer->ksnp_last_alive = cfs_time_current(); - conn->ksnc_rx_deadline = - cfs_time_shift(*ksocknal_tunables.ksnd_timeout); + conn->ksnc_peer->ksnp_last_alive = ktime_get_seconds(); + conn->ksnc_rx_deadline = ktime_get_seconds() + + lnet_get_lnd_timeout(); smp_mb(); /* order with setting rx_started */ conn->ksnc_rx_started = 1; conn->ksnc_rx_nob_wanted -= nob; conn->ksnc_rx_nob_left -= nob; - do { - LASSERT (conn->ksnc_rx_nkiov > 0); + do { + LASSERT(conn->ksnc_rx_nkiov > 0); - if (nob < (int) kiov->kiov_len) { - kiov->kiov_offset += nob; - kiov->kiov_len -= nob; - return -EAGAIN; - } + if (nob < (int) kiov->bv_len) { + kiov->bv_offset += nob; + kiov->bv_len -= nob; + return -EAGAIN; + } - nob -= kiov->kiov_len; - conn->ksnc_rx_kiov = ++kiov; - conn->ksnc_rx_nkiov--; - } while (nob != 0); + nob -= kiov->bv_len; + conn->ksnc_rx_kiov = ++kiov; + conn->ksnc_rx_nkiov--; + } while (nob != 0); - return 1; + return 1; } static int -ksocknal_receive (ksock_conn_t *conn) +ksocknal_receive(struct ksock_conn *conn, struct page **rx_scratch_pgs, + struct kvec *scratch_iov) { - /* Return 1 on success, 0 on EOF, < 0 on error. - * Caller checks ksnc_rx_nob_wanted to determine - * progress/completion. */ - int rc; - ENTRY; + /* Return 1 on success, 0 on EOF, < 0 on error. + * Caller checks ksnc_rx_nob_wanted to determine + * progress/completion. */ + int rc; + ENTRY; + + if (ksocknal_data.ksnd_stall_rx != 0) + schedule_timeout_uninterruptible( + cfs_time_seconds(ksocknal_data.ksnd_stall_rx)); - if (ksocknal_data.ksnd_stall_rx != 0) { - set_current_state(TASK_UNINTERRUPTIBLE); - schedule_timeout(cfs_time_seconds(ksocknal_data.ksnd_stall_rx)); + rc = ksocknal_connsock_addref(conn); + if (rc != 0) { + LASSERT(conn->ksnc_closing); + return -ESHUTDOWN; } - rc = ksocknal_connsock_addref(conn); - if (rc != 0) { - LASSERT (conn->ksnc_closing); - return (-ESHUTDOWN); - } + for (;;) { + if (conn->ksnc_rx_niov != 0) + rc = ksocknal_recv_iov(conn, scratch_iov); + else + rc = ksocknal_recv_kiov(conn, rx_scratch_pgs, + scratch_iov); - for (;;) { - if (conn->ksnc_rx_niov != 0) - rc = ksocknal_recv_iov (conn); - else - rc = ksocknal_recv_kiov (conn); - - if (rc <= 0) { - /* error/EOF or partial receive */ - if (rc == -EAGAIN) { - rc = 1; - } else if (rc == 0 && conn->ksnc_rx_started) { - /* EOF in the middle of a message */ - rc = -EPROTO; - } - break; - } + if (rc <= 0) { + /* error/EOF or partial receive */ + if (rc == -EAGAIN) { + rc = 1; + } else if (rc == 0 && conn->ksnc_rx_started) { + /* EOF in the middle of a message */ + rc = -EPROTO; + } + break; + } - /* Completed a fragment */ + /* Completed a fragment */ - if (conn->ksnc_rx_nob_wanted == 0) { - rc = 1; - break; - } - } + if (conn->ksnc_rx_nob_wanted == 0) { + rc = 1; + break; + } + } - ksocknal_connsock_decref(conn); - RETURN (rc); + ksocknal_connsock_decref(conn); + RETURN(rc); } void -ksocknal_tx_done(struct lnet_ni *ni, ksock_tx_t *tx) +ksocknal_tx_done(struct lnet_ni *ni, struct ksock_tx *tx, int rc) { struct lnet_msg *lnetmsg = tx->tx_lnetmsg; - int rc = (tx->tx_resid == 0 && !tx->tx_zc_aborted) ? 0 : -EIO; + enum lnet_msg_hstatus hstatus = tx->tx_hstatus; ENTRY; - LASSERT(ni != NULL || tx->tx_conn != NULL); + LASSERT(ni != NULL || tx->tx_conn != NULL); - if (tx->tx_conn != NULL) - ksocknal_conn_decref(tx->tx_conn); + if (!rc && (tx->tx_resid != 0 || tx->tx_zc_aborted)) { + rc = -EIO; + if (hstatus == LNET_MSG_STATUS_OK) + hstatus = LNET_MSG_STATUS_LOCAL_ERROR; + } - if (ni == NULL && tx->tx_conn != NULL) - ni = tx->tx_conn->ksnc_peer->ksnp_ni; + if (tx->tx_conn != NULL) + ksocknal_conn_decref(tx->tx_conn); - ksocknal_free_tx (tx); - if (lnetmsg != NULL) /* KSOCK_MSG_NOOP go without lnetmsg */ - lnet_finalize (ni, lnetmsg, rc); + ksocknal_free_tx(tx); + if (lnetmsg != NULL) { /* KSOCK_MSG_NOOP go without lnetmsg */ + lnetmsg->msg_health_status = hstatus; + lnet_finalize(lnetmsg, rc); + } - EXIT; + EXIT; } void ksocknal_txlist_done(struct lnet_ni *ni, struct list_head *txlist, int error) { - ksock_tx_t *tx; + struct ksock_tx *tx; while (!list_empty(txlist)) { - tx = list_entry(txlist->next, ksock_tx_t, tx_list); - - if (error && tx->tx_lnetmsg != NULL) { - CNETERR("Deleting packet type %d len %d %s->%s\n", - le32_to_cpu (tx->tx_lnetmsg->msg_hdr.type), - le32_to_cpu (tx->tx_lnetmsg->msg_hdr.payload_length), - libcfs_nid2str(le64_to_cpu(tx->tx_lnetmsg->msg_hdr.src_nid)), - libcfs_nid2str(le64_to_cpu(tx->tx_lnetmsg->msg_hdr.dest_nid))); - } else if (error) { - CNETERR("Deleting noop packet\n"); - } + tx = list_entry(txlist->next, struct ksock_tx, tx_list); + + if (error && tx->tx_lnetmsg != NULL) { + CNETERR("Deleting packet type %d len %d %s->%s\n", + le32_to_cpu(tx->tx_lnetmsg->msg_hdr.type), + le32_to_cpu(tx->tx_lnetmsg->msg_hdr.payload_length), + libcfs_nid2str(le64_to_cpu(tx->tx_lnetmsg->msg_hdr.src_nid)), + libcfs_nid2str(le64_to_cpu(tx->tx_lnetmsg->msg_hdr.dest_nid))); + } else if (error) { + CNETERR("Deleting noop packet\n"); + } list_del(&tx->tx_list); - LASSERT (atomic_read(&tx->tx_refcount) == 1); - ksocknal_tx_done (ni, tx); - } + if (tx->tx_hstatus == LNET_MSG_STATUS_OK) { + if (error == -ETIMEDOUT) + tx->tx_hstatus = + LNET_MSG_STATUS_LOCAL_TIMEOUT; + else if (error == -ENETDOWN || + error == -EHOSTUNREACH || + error == -ENETUNREACH || + error == -ECONNREFUSED || + error == -ECONNRESET) + tx->tx_hstatus = LNET_MSG_STATUS_REMOTE_DROPPED; + /* + * for all other errors we don't want to + * retransmit + */ + else if (error) + tx->tx_hstatus = LNET_MSG_STATUS_LOCAL_ERROR; + } + + LASSERT(atomic_read(&tx->tx_refcount) == 1); + ksocknal_tx_done(ni, tx, error); + } } static void -ksocknal_check_zc_req(ksock_tx_t *tx) +ksocknal_check_zc_req(struct ksock_tx *tx) { - ksock_conn_t *conn = tx->tx_conn; - ksock_peer_ni_t *peer_ni = conn->ksnc_peer; + struct ksock_conn *conn = tx->tx_conn; + struct ksock_peer_ni *peer_ni = conn->ksnc_peer; /* Set tx_msg.ksm_zc_cookies[0] to a unique non-zero cookie and add tx * to ksnp_zc_req_list if some fragment of this message should be sent @@ -464,8 +492,8 @@ ksocknal_check_zc_req(ksock_tx_t *tx) spin_lock(&peer_ni->ksnp_lock); /* ZC_REQ is going to be pinned to the peer_ni */ - tx->tx_deadline = - cfs_time_shift(*ksocknal_tunables.ksnd_timeout); + tx->tx_deadline = ktime_get_seconds() + + lnet_get_lnd_timeout(); LASSERT (tx->tx_msg.ksm_zc_cookies[0] == 0); @@ -480,9 +508,9 @@ ksocknal_check_zc_req(ksock_tx_t *tx) } static void -ksocknal_uncheck_zc_req(ksock_tx_t *tx) +ksocknal_uncheck_zc_req(struct ksock_tx *tx) { - ksock_peer_ni_t *peer_ni = tx->tx_conn->ksnc_peer; + struct ksock_peer_ni *peer_ni = tx->tx_conn->ksnc_peer; LASSERT(tx->tx_msg.ksm_type != KSOCK_MSG_NOOP); LASSERT(tx->tx_zc_capable); @@ -506,85 +534,111 @@ ksocknal_uncheck_zc_req(ksock_tx_t *tx) } static int -ksocknal_process_transmit (ksock_conn_t *conn, ksock_tx_t *tx) +ksocknal_process_transmit(struct ksock_conn *conn, struct ksock_tx *tx, + struct kvec *scratch_iov) { - int rc; + int rc; + bool error_sim = false; - if (tx->tx_zc_capable && !tx->tx_zc_checked) - ksocknal_check_zc_req(tx); + if (lnet_send_error_simulation(tx->tx_lnetmsg, &tx->tx_hstatus)) { + error_sim = true; + rc = -EINVAL; + goto simulate_error; + } - rc = ksocknal_transmit (conn, tx); + if (tx->tx_zc_capable && !tx->tx_zc_checked) + ksocknal_check_zc_req(tx); - CDEBUG (D_NET, "send(%d) %d\n", tx->tx_resid, rc); + rc = ksocknal_transmit(conn, tx, scratch_iov); - if (tx->tx_resid == 0) { - /* Sent everything OK */ - LASSERT (rc == 0); + CDEBUG(D_NET, "send(%d) %d\n", tx->tx_resid, rc); - return (0); - } + if (tx->tx_resid == 0) { + /* Sent everything OK */ + LASSERT(rc == 0); - if (rc == -EAGAIN) - return (rc); + return 0; + } - if (rc == -ENOMEM) { - static int counter; + if (rc == -EAGAIN) + return rc; - counter++; /* exponential backoff warnings */ - if ((counter & (-counter)) == counter) - CWARN("%u ENOMEM tx %p (%u allocated)\n", + if (rc == -ENOMEM) { + static int counter; + + counter++; /* exponential backoff warnings */ + if ((counter & (-counter)) == counter) + CWARN("%u ENOMEM tx %p (%u allocated)\n", counter, conn, atomic_read(&libcfs_kmemory)); - /* Queue on ksnd_enomem_conns for retry after a timeout */ + /* Queue on ksnd_enomem_conns for retry after a timeout */ spin_lock_bh(&ksocknal_data.ksnd_reaper_lock); - /* enomem list takes over scheduler's ref... */ - LASSERT (conn->ksnc_tx_scheduled); + /* enomem list takes over scheduler's ref... */ + LASSERT(conn->ksnc_tx_scheduled); list_add_tail(&conn->ksnc_tx_list, - &ksocknal_data.ksnd_enomem_conns); - if (!cfs_time_aftereq(cfs_time_add(cfs_time_current(), - SOCKNAL_ENOMEM_RETRY), - ksocknal_data.ksnd_reaper_waketime)) + &ksocknal_data.ksnd_enomem_conns); + if (ktime_get_seconds() + SOCKNAL_ENOMEM_RETRY < + ksocknal_data.ksnd_reaper_waketime) wake_up(&ksocknal_data.ksnd_reaper_waitq); spin_unlock_bh(&ksocknal_data.ksnd_reaper_lock); + + /* + * set the health status of the message which determines + * whether we should retry the transmit + */ + tx->tx_hstatus = LNET_MSG_STATUS_LOCAL_ERROR; return (rc); } - /* Actual error */ - LASSERT (rc < 0); +simulate_error: - if (!conn->ksnc_closing) { - switch (rc) { - case -ECONNRESET: + /* Actual error */ + LASSERT(rc < 0); + + if (!error_sim) { + /* + * set the health status of the message which determines + * whether we should retry the transmit + */ + if (rc == -ETIMEDOUT) + tx->tx_hstatus = LNET_MSG_STATUS_REMOTE_TIMEOUT; + else + tx->tx_hstatus = LNET_MSG_STATUS_LOCAL_ERROR; + } + + if (!conn->ksnc_closing) { + switch (rc) { + case -ECONNRESET: LCONSOLE_WARN("Host %pI4h reset our connection " - "while we were sending data; it may have " - "rebooted.\n", + "while we were sending data; it may have " + "rebooted.\n", &conn->ksnc_ipaddr); - break; - default: - LCONSOLE_WARN("There was an unexpected network error " + break; + default: + LCONSOLE_WARN("There was an unexpected network error " "while writing to %pI4h: %d.\n", &conn->ksnc_ipaddr, rc); - break; - } + break; + } CDEBUG(D_NET, "[%p] Error %d on write to %s ip %pI4h:%d\n", conn, rc, libcfs_id2str(conn->ksnc_peer->ksnp_id), &conn->ksnc_ipaddr, conn->ksnc_port); - } + } - if (tx->tx_zc_checked) - ksocknal_uncheck_zc_req(tx); + if (tx->tx_zc_checked) + ksocknal_uncheck_zc_req(tx); - /* it's not an error if conn is being closed */ - ksocknal_close_conn_and_siblings (conn, - (conn->ksnc_closing) ? 0 : rc); + /* it's not an error if conn is being closed */ + ksocknal_close_conn_and_siblings(conn, + (conn->ksnc_closing) ? 0 : rc); - return (rc); + return rc; } static void -ksocknal_launch_connection_locked (ksock_route_t *route) +ksocknal_launch_connection_locked(struct ksock_route *route) { /* called holding write lock on ksnd_global_lock */ @@ -606,9 +660,9 @@ ksocknal_launch_connection_locked (ksock_route_t *route) } void -ksocknal_launch_all_connections_locked (ksock_peer_ni_t *peer_ni) +ksocknal_launch_all_connections_locked(struct ksock_peer_ni *peer_ni) { - ksock_route_t *route; + struct ksock_route *route; /* called holding write lock on ksnd_global_lock */ for (;;) { @@ -621,21 +675,22 @@ ksocknal_launch_all_connections_locked (ksock_peer_ni_t *peer_ni) } } -ksock_conn_t * -ksocknal_find_conn_locked(ksock_peer_ni_t *peer_ni, ksock_tx_t *tx, int nonblk) +struct ksock_conn * +ksocknal_find_conn_locked(struct ksock_peer_ni *peer_ni, struct ksock_tx *tx, int nonblk) { struct list_head *tmp; - ksock_conn_t *conn; - ksock_conn_t *typed = NULL; - ksock_conn_t *fallback = NULL; - int tnob = 0; - int fnob = 0; + struct ksock_conn *conn; + struct ksock_conn *typed = NULL; + struct ksock_conn *fallback = NULL; + int tnob = 0; + int fnob = 0; list_for_each(tmp, &peer_ni->ksnp_conns) { - ksock_conn_t *c = list_entry(tmp, ksock_conn_t, ksnc_list); - int nob = atomic_read(&c->ksnc_tx_nob) + - c->ksnc_sock->sk->sk_wmem_queued; - int rc; + struct ksock_conn *c = list_entry(tmp, struct ksock_conn, + ksnc_list); + int nob = atomic_read(&c->ksnc_tx_nob) + + c->ksnc_sock->sk->sk_wmem_queued; + int rc; LASSERT (!c->ksnc_closing); LASSERT (c->ksnc_proto != NULL && @@ -652,7 +707,7 @@ ksocknal_find_conn_locked(ksock_peer_ni_t *peer_ni, ksock_tx_t *tx, int nonblk) case SOCKNAL_MATCH_YES: /* typed connection */ if (typed == NULL || tnob > nob || (tnob == nob && *ksocknal_tunables.ksnd_round_robin && - cfs_time_after(typed->ksnc_tx_last_post, c->ksnc_tx_last_post))) { + typed->ksnc_tx_last_post > c->ksnc_tx_last_post)) { typed = c; tnob = nob; } @@ -661,7 +716,7 @@ ksocknal_find_conn_locked(ksock_peer_ni_t *peer_ni, ksock_tx_t *tx, int nonblk) case SOCKNAL_MATCH_MAY: /* fallback connection */ if (fallback == NULL || fnob > nob || (fnob == nob && *ksocknal_tunables.ksnd_round_robin && - cfs_time_after(fallback->ksnc_tx_last_post, c->ksnc_tx_last_post))) { + fallback->ksnc_tx_last_post > c->ksnc_tx_last_post)) { fallback = c; fnob = nob; } @@ -673,13 +728,13 @@ ksocknal_find_conn_locked(ksock_peer_ni_t *peer_ni, ksock_tx_t *tx, int nonblk) conn = (typed != NULL) ? typed : fallback; if (conn != NULL) - conn->ksnc_tx_last_post = cfs_time_current(); + conn->ksnc_tx_last_post = ktime_get_seconds(); return conn; } void -ksocknal_tx_prep(ksock_conn_t *conn, ksock_tx_t *tx) +ksocknal_tx_prep(struct ksock_conn *conn, struct ksock_tx *tx) { conn->ksnc_proto->pro_pack(tx); @@ -689,12 +744,12 @@ ksocknal_tx_prep(ksock_conn_t *conn, ksock_tx_t *tx) } void -ksocknal_queue_tx_locked (ksock_tx_t *tx, ksock_conn_t *conn) +ksocknal_queue_tx_locked(struct ksock_tx *tx, struct ksock_conn *conn) { - ksock_sched_t *sched = conn->ksnc_scheduler; - struct ksock_msg *msg = &tx->tx_msg; - ksock_tx_t *ztx = NULL; - int bufnob = 0; + struct ksock_sched *sched = conn->ksnc_scheduler; + struct ksock_msg *msg = &tx->tx_msg; + struct ksock_tx *ztx = NULL; + int bufnob = 0; /* called holding global lock (read or irq-write) and caller may * not have dropped this lock between finding conn and calling me, @@ -730,10 +785,10 @@ ksocknal_queue_tx_locked (ksock_tx_t *tx, ksock_conn_t *conn) if (list_empty(&conn->ksnc_tx_queue) && bufnob == 0) { /* First packet starts the timeout */ - conn->ksnc_tx_deadline = - cfs_time_shift(*ksocknal_tunables.ksnd_timeout); + conn->ksnc_tx_deadline = ktime_get_seconds() + + lnet_get_lnd_timeout(); if (conn->ksnc_tx_bufnob > 0) /* something got ACKed */ - conn->ksnc_peer->ksnp_last_alive = cfs_time_current(); + conn->ksnc_peer->ksnp_last_alive = ktime_get_seconds(); conn->ksnc_tx_bufnob = 0; smp_mb(); /* order with adding to tx_queue */ } @@ -776,15 +831,15 @@ ksocknal_queue_tx_locked (ksock_tx_t *tx, ksock_conn_t *conn) } -ksock_route_t * -ksocknal_find_connectable_route_locked (ksock_peer_ni_t *peer_ni) +struct ksock_route * +ksocknal_find_connectable_route_locked(struct ksock_peer_ni *peer_ni) { - cfs_time_t now = cfs_time_current(); - struct list_head *tmp; - ksock_route_t *route; + time64_t now = ktime_get_seconds(); + struct list_head *tmp; + struct ksock_route *route; list_for_each(tmp, &peer_ni->ksnp_routes) { - route = list_entry(tmp, ksock_route_t, ksnr_list); + route = list_entry(tmp, struct ksock_route, ksnr_list); LASSERT (!route->ksnr_connecting || route->ksnr_scheduled); @@ -796,14 +851,14 @@ ksocknal_find_connectable_route_locked (ksock_peer_ni_t *peer_ni) continue; if (!(route->ksnr_retry_interval == 0 || /* first attempt */ - cfs_time_aftereq(now, route->ksnr_timeout))) { + now >= route->ksnr_timeout)) { CDEBUG(D_NET, "Too soon to retry route %pI4h " - "(cnted %d, interval %ld, %ld secs later)\n", + "(cnted %d, interval %lld, %lld secs later)\n", &route->ksnr_ipaddr, route->ksnr_connected, route->ksnr_retry_interval, - cfs_duration_sec(route->ksnr_timeout - now)); + route->ksnr_timeout - now); continue; } @@ -813,14 +868,14 @@ ksocknal_find_connectable_route_locked (ksock_peer_ni_t *peer_ni) return (NULL); } -ksock_route_t * -ksocknal_find_connecting_route_locked (ksock_peer_ni_t *peer_ni) +struct ksock_route * +ksocknal_find_connecting_route_locked(struct ksock_peer_ni *peer_ni) { - struct list_head *tmp; - ksock_route_t *route; + struct list_head *tmp; + struct ksock_route *route; list_for_each(tmp, &peer_ni->ksnp_routes) { - route = list_entry(tmp, ksock_route_t, ksnr_list); + route = list_entry(tmp, struct ksock_route, ksnr_list); LASSERT (!route->ksnr_connecting || route->ksnr_scheduled); @@ -832,14 +887,14 @@ ksocknal_find_connecting_route_locked (ksock_peer_ni_t *peer_ni) } int -ksocknal_launch_packet(struct lnet_ni *ni, ksock_tx_t *tx, +ksocknal_launch_packet(struct lnet_ni *ni, struct ksock_tx *tx, struct lnet_process_id id) { - ksock_peer_ni_t *peer_ni; - ksock_conn_t *conn; - rwlock_t *g_lock; - int retry; - int rc; + struct ksock_peer_ni *peer_ni; + struct ksock_conn *conn; + rwlock_t *g_lock; + int retry; + int rc; LASSERT (tx->tx_conn == NULL); @@ -907,8 +962,8 @@ ksocknal_launch_packet(struct lnet_ni *ni, ksock_tx_t *tx, if (peer_ni->ksnp_accepting > 0 || ksocknal_find_connecting_route_locked (peer_ni) != NULL) { /* the message is going to be pinned to the peer_ni */ - tx->tx_deadline = - cfs_time_shift(*ksocknal_tunables.ksnd_timeout); + tx->tx_deadline = ktime_get_seconds() + + lnet_get_lnd_timeout(); /* Queue the message until a connection is established */ list_add_tail(&tx->tx_list, &peer_ni->ksnp_tx_queue); @@ -920,6 +975,7 @@ ksocknal_launch_packet(struct lnet_ni *ni, ksock_tx_t *tx, /* NB Routes may be ignored if connections to them failed recently */ CNETERR("No usable routes to %s\n", libcfs_id2str(id)); + tx->tx_hstatus = LNET_MSG_STATUS_REMOTE_ERROR; return (-EHOSTUNREACH); } @@ -929,14 +985,14 @@ ksocknal_send(struct lnet_ni *ni, void *private, struct lnet_msg *lntmsg) int mpflag = 1; int type = lntmsg->msg_type; struct lnet_process_id target = lntmsg->msg_target; - unsigned int payload_niov = lntmsg->msg_niov; + unsigned int payload_niov = lntmsg->msg_niov; struct kvec *payload_iov = lntmsg->msg_iov; - lnet_kiov_t *payload_kiov = lntmsg->msg_kiov; - unsigned int payload_offset = lntmsg->msg_offset; - unsigned int payload_nob = lntmsg->msg_len; - ksock_tx_t *tx; - int desc_size; - int rc; + struct bio_vec *payload_kiov = lntmsg->msg_kiov; + unsigned int payload_offset = lntmsg->msg_offset; + unsigned int payload_nob = lntmsg->msg_len; + struct ksock_tx *tx; + int desc_size; + int rc; /* NB 'private' is different depending on what we're sending. * Just ignore it... */ @@ -951,10 +1007,10 @@ ksocknal_send(struct lnet_ni *ni, void *private, struct lnet_msg *lntmsg) LASSERT (!in_interrupt ()); if (payload_iov != NULL) - desc_size = offsetof(ksock_tx_t, + desc_size = offsetof(struct ksock_tx, tx_frags.virt.iov[1 + payload_niov]); else - desc_size = offsetof(ksock_tx_t, + desc_size = offsetof(struct ksock_tx, tx_frags.paged.kiov[payload_niov]); if (lntmsg->msg_vmflush) @@ -1004,6 +1060,7 @@ ksocknal_send(struct lnet_ni *ni, void *private, struct lnet_msg *lntmsg) if (rc == 0) return (0); + lntmsg->msg_health_status = tx->tx_hstatus; ksocknal_free_tx(tx); return (-EIO); } @@ -1026,18 +1083,18 @@ void ksocknal_thread_fini (void) { write_lock_bh(&ksocknal_data.ksnd_global_lock); - ksocknal_data.ksnd_nthreads--; + if (--ksocknal_data.ksnd_nthreads == 0) + wake_up_var(&ksocknal_data.ksnd_nthreads); write_unlock_bh(&ksocknal_data.ksnd_global_lock); } int -ksocknal_new_packet (ksock_conn_t *conn, int nob_to_skip) +ksocknal_new_packet(struct ksock_conn *conn, int nob_to_skip) { static char ksocknal_slop_buffer[4096]; - - int nob; - unsigned int niov; - int skipped; + int nob; + unsigned int niov; + int skipped; LASSERT(conn->ksnc_proto != NULL); @@ -1087,22 +1144,22 @@ ksocknal_new_packet (ksock_conn_t *conn, int nob_to_skip) /* Set up to skip as much as possible now. If there's more left * (ran out of iov entries) we'll get called again */ - conn->ksnc_rx_state = SOCKNAL_RX_SLOP; - conn->ksnc_rx_nob_left = nob_to_skip; + conn->ksnc_rx_state = SOCKNAL_RX_SLOP; + conn->ksnc_rx_nob_left = nob_to_skip; conn->ksnc_rx_iov = (struct kvec *)&conn->ksnc_rx_iov_space; - skipped = 0; - niov = 0; + skipped = 0; + niov = 0; - do { - nob = MIN (nob_to_skip, sizeof (ksocknal_slop_buffer)); + do { + nob = min_t(int, nob_to_skip, sizeof(ksocknal_slop_buffer)); - conn->ksnc_rx_iov[niov].iov_base = ksocknal_slop_buffer; - conn->ksnc_rx_iov[niov].iov_len = nob; - niov++; - skipped += nob; - nob_to_skip -=nob; + conn->ksnc_rx_iov[niov].iov_base = ksocknal_slop_buffer; + conn->ksnc_rx_iov[niov].iov_len = nob; + niov++; + skipped += nob; + nob_to_skip -= nob; - } while (nob_to_skip != 0 && /* mustn't overflow conn's rx iov */ + } while (nob_to_skip != 0 && /* mustn't overflow conn's rx iov */ niov < sizeof(conn->ksnc_rx_iov_space) / sizeof(struct kvec)); conn->ksnc_rx_niov = niov; @@ -1113,7 +1170,9 @@ ksocknal_new_packet (ksock_conn_t *conn, int nob_to_skip) } static int -ksocknal_process_receive (ksock_conn_t *conn) +ksocknal_process_receive(struct ksock_conn *conn, + struct page **rx_scratch_pgs, + struct kvec *scratch_iov) { struct lnet_hdr *lhdr; struct lnet_process_id *id; @@ -1123,13 +1182,14 @@ ksocknal_process_receive (ksock_conn_t *conn) /* NB: sched lock NOT held */ /* SOCKNAL_RX_LNET_HEADER is here for backward compatibility */ - LASSERT (conn->ksnc_rx_state == SOCKNAL_RX_KSM_HEADER || - conn->ksnc_rx_state == SOCKNAL_RX_LNET_PAYLOAD || - conn->ksnc_rx_state == SOCKNAL_RX_LNET_HEADER || - conn->ksnc_rx_state == SOCKNAL_RX_SLOP); + LASSERT(conn->ksnc_rx_state == SOCKNAL_RX_KSM_HEADER || + conn->ksnc_rx_state == SOCKNAL_RX_LNET_PAYLOAD || + conn->ksnc_rx_state == SOCKNAL_RX_LNET_HEADER || + conn->ksnc_rx_state == SOCKNAL_RX_SLOP); again: - if (conn->ksnc_rx_nob_wanted != 0) { - rc = ksocknal_receive(conn); + if (conn->ksnc_rx_nob_wanted != 0) { + rc = ksocknal_receive(conn, rx_scratch_pgs, + scratch_iov); if (rc <= 0) { struct lnet_process_id ksnp_id; @@ -1295,7 +1355,10 @@ ksocknal_process_receive (ksock_conn_t *conn) le64_to_cpu(lhdr->src_nid) != id->nid); } - lnet_finalize(conn->ksnc_peer->ksnp_ni, conn->ksnc_cookie, rc); + if (rc && conn->ksnc_lnet_msg) + conn->ksnc_lnet_msg->msg_health_status = + LNET_MSG_STATUS_REMOTE_ERROR; + lnet_finalize(conn->ksnc_lnet_msg, rc); if (rc != 0) { ksocknal_new_packet(conn, 0); @@ -1322,18 +1385,18 @@ ksocknal_process_receive (ksock_conn_t *conn) int ksocknal_recv(struct lnet_ni *ni, void *private, struct lnet_msg *msg, int delayed, unsigned int niov, struct kvec *iov, - lnet_kiov_t *kiov, unsigned int offset, unsigned int mlen, + struct bio_vec *kiov, unsigned int offset, unsigned int mlen, unsigned int rlen) { - ksock_conn_t *conn = (ksock_conn_t *)private; - ksock_sched_t *sched = conn->ksnc_scheduler; + struct ksock_conn *conn = private; + struct ksock_sched *sched = conn->ksnc_scheduler; LASSERT (mlen <= rlen); LASSERT (niov <= LNET_MAX_IOV); - conn->ksnc_cookie = msg; - conn->ksnc_rx_nob_wanted = mlen; - conn->ksnc_rx_nob_left = rlen; + conn->ksnc_lnet_msg = msg; + conn->ksnc_rx_nob_wanted = mlen; + conn->ksnc_rx_nob_left = rlen; if (mlen == 0 || iov != NULL) { conn->ksnc_rx_nkiov = 0; @@ -1379,7 +1442,7 @@ ksocknal_recv(struct lnet_ni *ni, void *private, struct lnet_msg *msg, } static inline int -ksocknal_sched_cansleep(ksock_sched_t *sched) +ksocknal_sched_cansleep(struct ksock_sched *sched) { int rc; @@ -1395,154 +1458,163 @@ ksocknal_sched_cansleep(ksock_sched_t *sched) int ksocknal_scheduler(void *arg) { - struct ksock_sched_info *info; - ksock_sched_t *sched; - ksock_conn_t *conn; - ksock_tx_t *tx; - int rc; - int nloops = 0; - long id = (long)arg; + struct ksock_sched *sched; + struct ksock_conn *conn; + struct ksock_tx *tx; + int rc; + int nloops = 0; + long id = (long)arg; + struct page **rx_scratch_pgs; + struct kvec *scratch_iov; + + sched = ksocknal_data.ksnd_schedulers[KSOCK_THREAD_CPT(id)]; - info = ksocknal_data.ksnd_sched_info[KSOCK_THREAD_CPT(id)]; - sched = &info->ksi_scheds[KSOCK_THREAD_SID(id)]; + LIBCFS_CPT_ALLOC(rx_scratch_pgs, lnet_cpt_table(), sched->kss_cpt, + sizeof(*rx_scratch_pgs) * LNET_MAX_IOV); + if (!rx_scratch_pgs) { + CERROR("Unable to allocate scratch pages\n"); + return -ENOMEM; + } - cfs_block_allsigs(); + LIBCFS_CPT_ALLOC(scratch_iov, lnet_cpt_table(), sched->kss_cpt, + sizeof(*scratch_iov) * LNET_MAX_IOV); + if (!scratch_iov) { + CERROR("Unable to allocate scratch iov\n"); + return -ENOMEM; + } - rc = cfs_cpt_bind(lnet_cpt_table(), info->ksi_cpt); + rc = cfs_cpt_bind(lnet_cpt_table(), sched->kss_cpt); if (rc != 0) { CWARN("Can't set CPU partition affinity to %d: %d\n", - info->ksi_cpt, rc); + sched->kss_cpt, rc); } spin_lock_bh(&sched->kss_lock); - while (!ksocknal_data.ksnd_shuttingdown) { - int did_something = 0; + while (!ksocknal_data.ksnd_shuttingdown) { + int did_something = 0; - /* Ensure I progress everything semi-fairly */ + /* Ensure I progress everything semi-fairly */ if (!list_empty(&sched->kss_rx_conns)) { conn = list_entry(sched->kss_rx_conns.next, - ksock_conn_t, ksnc_rx_list); + struct ksock_conn, ksnc_rx_list); list_del(&conn->ksnc_rx_list); - LASSERT(conn->ksnc_rx_scheduled); - LASSERT(conn->ksnc_rx_ready); + LASSERT(conn->ksnc_rx_scheduled); + LASSERT(conn->ksnc_rx_ready); - /* clear rx_ready in case receive isn't complete. - * Do it BEFORE we call process_recv, since - * data_ready can set it any time after we release - * kss_lock. */ - conn->ksnc_rx_ready = 0; + /* clear rx_ready in case receive isn't complete. + * Do it BEFORE we call process_recv, since + * data_ready can set it any time after we release + * kss_lock. */ + conn->ksnc_rx_ready = 0; spin_unlock_bh(&sched->kss_lock); - rc = ksocknal_process_receive(conn); + rc = ksocknal_process_receive(conn, rx_scratch_pgs, + scratch_iov); spin_lock_bh(&sched->kss_lock); - /* I'm the only one that can clear this flag */ - LASSERT(conn->ksnc_rx_scheduled); - - /* Did process_receive get everything it wanted? */ - if (rc == 0) - conn->ksnc_rx_ready = 1; + /* I'm the only one that can clear this flag */ + LASSERT(conn->ksnc_rx_scheduled); - if (conn->ksnc_rx_state == SOCKNAL_RX_PARSE) { - /* Conn blocked waiting for ksocknal_recv() - * I change its state (under lock) to signal - * it can be rescheduled */ - conn->ksnc_rx_state = SOCKNAL_RX_PARSE_WAIT; - } else if (conn->ksnc_rx_ready) { - /* reschedule for rx */ + /* Did process_receive get everything it wanted? */ + if (rc == 0) + conn->ksnc_rx_ready = 1; + + if (conn->ksnc_rx_state == SOCKNAL_RX_PARSE) { + /* Conn blocked waiting for ksocknal_recv() + * I change its state (under lock) to signal + * it can be rescheduled */ + conn->ksnc_rx_state = SOCKNAL_RX_PARSE_WAIT; + } else if (conn->ksnc_rx_ready) { + /* reschedule for rx */ list_add_tail(&conn->ksnc_rx_list, - &sched->kss_rx_conns); - } else { - conn->ksnc_rx_scheduled = 0; - /* drop my ref */ - ksocknal_conn_decref(conn); - } + &sched->kss_rx_conns); + } else { + conn->ksnc_rx_scheduled = 0; + /* drop my ref */ + ksocknal_conn_decref(conn); + } - did_something = 1; - } + did_something = 1; + } if (!list_empty(&sched->kss_tx_conns)) { - struct list_head zlist = LIST_HEAD_INIT(zlist); + LIST_HEAD(zlist); - if (!list_empty(&sched->kss_zombie_noop_txs)) { - list_add(&zlist, - &sched->kss_zombie_noop_txs); - list_del_init(&sched->kss_zombie_noop_txs); - } + list_splice_init(&sched->kss_zombie_noop_txs, &zlist); conn = list_entry(sched->kss_tx_conns.next, - ksock_conn_t, ksnc_tx_list); + struct ksock_conn, ksnc_tx_list); list_del(&conn->ksnc_tx_list); - LASSERT(conn->ksnc_tx_scheduled); - LASSERT(conn->ksnc_tx_ready); + LASSERT(conn->ksnc_tx_scheduled); + LASSERT(conn->ksnc_tx_ready); LASSERT(!list_empty(&conn->ksnc_tx_queue)); tx = list_entry(conn->ksnc_tx_queue.next, - ksock_tx_t, tx_list); + struct ksock_tx, tx_list); - if (conn->ksnc_tx_carrier == tx) - ksocknal_next_tx_carrier(conn); + if (conn->ksnc_tx_carrier == tx) + ksocknal_next_tx_carrier(conn); - /* dequeue now so empty list => more to send */ + /* dequeue now so empty list => more to send */ list_del(&tx->tx_list); - /* Clear tx_ready in case send isn't complete. Do - * it BEFORE we call process_transmit, since - * write_space can set it any time after we release - * kss_lock. */ - conn->ksnc_tx_ready = 0; + /* Clear tx_ready in case send isn't complete. Do + * it BEFORE we call process_transmit, since + * write_space can set it any time after we release + * kss_lock. */ + conn->ksnc_tx_ready = 0; spin_unlock_bh(&sched->kss_lock); if (!list_empty(&zlist)) { /* free zombie noop txs, it's fast because - * noop txs are just put in freelist */ - ksocknal_txlist_done(NULL, &zlist, 0); - } + * noop txs are just put in freelist */ + ksocknal_txlist_done(NULL, &zlist, 0); + } - rc = ksocknal_process_transmit(conn, tx); + rc = ksocknal_process_transmit(conn, tx, scratch_iov); - if (rc == -ENOMEM || rc == -EAGAIN) { - /* Incomplete send: replace tx on HEAD of tx_queue */ + if (rc == -ENOMEM || rc == -EAGAIN) { + /* Incomplete send: replace tx on HEAD of tx_queue */ spin_lock_bh(&sched->kss_lock); list_add(&tx->tx_list, - &conn->ksnc_tx_queue); + &conn->ksnc_tx_queue); } else { /* Complete send; tx -ref */ ksocknal_tx_decref(tx); spin_lock_bh(&sched->kss_lock); - /* assume space for more */ - conn->ksnc_tx_ready = 1; - } + /* assume space for more */ + conn->ksnc_tx_ready = 1; + } - if (rc == -ENOMEM) { - /* Do nothing; after a short timeout, this - * conn will be reposted on kss_tx_conns. */ - } else if (conn->ksnc_tx_ready && + if (rc == -ENOMEM) { + /* Do nothing; after a short timeout, this + * conn will be reposted on kss_tx_conns. */ + } else if (conn->ksnc_tx_ready && !list_empty(&conn->ksnc_tx_queue)) { - /* reschedule for tx */ + /* reschedule for tx */ list_add_tail(&conn->ksnc_tx_list, - &sched->kss_tx_conns); - } else { - conn->ksnc_tx_scheduled = 0; - /* drop my ref */ - ksocknal_conn_decref(conn); - } + &sched->kss_tx_conns); + } else { + conn->ksnc_tx_scheduled = 0; + /* drop my ref */ + ksocknal_conn_decref(conn); + } - did_something = 1; - } - if (!did_something || /* nothing to do */ - ++nloops == SOCKNAL_RESCHED) { /* hogging CPU? */ + did_something = 1; + } + if (!did_something || /* nothing to do */ + ++nloops == SOCKNAL_RESCHED) { /* hogging CPU? */ spin_unlock_bh(&sched->kss_lock); - nloops = 0; + nloops = 0; - if (!did_something) { /* wait for something to do */ + if (!did_something) { /* wait for something to do */ rc = wait_event_interruptible_exclusive( sched->kss_waitq, !ksocknal_sched_cansleep(sched)); @@ -1556,6 +1628,8 @@ int ksocknal_scheduler(void *arg) } spin_unlock_bh(&sched->kss_lock); + CFS_FREE_PTR_ARRAY(rx_scratch_pgs, LNET_MAX_IOV); + CFS_FREE_PTR_ARRAY(scratch_iov, LNET_MAX_IOV); ksocknal_thread_fini(); return 0; } @@ -1564,9 +1638,9 @@ int ksocknal_scheduler(void *arg) * Add connection to kss_rx_conns of scheduler * and wakeup the scheduler. */ -void ksocknal_read_callback (ksock_conn_t *conn) +void ksocknal_read_callback(struct ksock_conn *conn) { - ksock_sched_t *sched; + struct ksock_sched *sched; ENTRY; sched = conn->ksnc_scheduler; @@ -1593,9 +1667,9 @@ void ksocknal_read_callback (ksock_conn_t *conn) * Add connection to kss_tx_conns of scheduler * and wakeup the scheduler. */ -void ksocknal_write_callback(ksock_conn_t *conn) +void ksocknal_write_callback(struct ksock_conn *conn) { - ksock_sched_t *sched; + struct ksock_sched *sched; ENTRY; sched = conn->ksnc_scheduler; @@ -1619,8 +1693,8 @@ void ksocknal_write_callback(ksock_conn_t *conn) EXIT; } -static ksock_proto_t * -ksocknal_parse_proto_version (struct ksock_hello_msg *hello) +static const struct ksock_proto * +ksocknal_parse_proto_version(struct ksock_hello_msg *hello) { __u32 version = 0; @@ -1650,7 +1724,7 @@ ksocknal_parse_proto_version (struct ksock_hello_msg *hello) if (hello->kshm_magic == le32_to_cpu(LNET_PROTO_TCP_MAGIC)) { struct lnet_magicversion *hmv; - CLASSERT(sizeof(struct lnet_magicversion) == + BUILD_BUG_ON(sizeof(struct lnet_magicversion) != offsetof(struct ksock_hello_msg, kshm_src_nid)); hmv = (struct lnet_magicversion *)hello; @@ -1664,25 +1738,25 @@ ksocknal_parse_proto_version (struct ksock_hello_msg *hello) } int -ksocknal_send_hello(struct lnet_ni *ni, ksock_conn_t *conn, +ksocknal_send_hello(struct lnet_ni *ni, struct ksock_conn *conn, lnet_nid_t peer_nid, struct ksock_hello_msg *hello) { - /* CAVEAT EMPTOR: this byte flips 'ipaddrs' */ - ksock_net_t *net = (ksock_net_t *)ni->ni_data; + /* CAVEAT EMPTOR: this byte flips 'ipaddrs' */ + struct ksock_net *net = (struct ksock_net *)ni->ni_data; - LASSERT (hello->kshm_nips <= LNET_MAX_INTERFACES); + LASSERT(hello->kshm_nips <= LNET_INTERFACES_NUM); - /* rely on caller to hold a ref on socket so it wouldn't disappear */ - LASSERT (conn->ksnc_proto != NULL); + /* rely on caller to hold a ref on socket so it wouldn't disappear */ + LASSERT(conn->ksnc_proto != NULL); - hello->kshm_src_nid = ni->ni_nid; - hello->kshm_dst_nid = peer_nid; - hello->kshm_src_pid = the_lnet.ln_pid; + hello->kshm_src_nid = ni->ni_nid; + hello->kshm_dst_nid = peer_nid; + hello->kshm_src_pid = the_lnet.ln_pid; - hello->kshm_src_incarnation = net->ksnn_incarnation; - hello->kshm_ctype = conn->ksnc_type; + hello->kshm_src_incarnation = net->ksnn_incarnation; + hello->kshm_ctype = conn->ksnc_type; - return conn->ksnc_proto->pro_send_hello(conn, hello); + return conn->ksnc_proto->pro_send_hello(conn, hello); } static int @@ -1703,7 +1777,7 @@ ksocknal_invert_type(int type) } int -ksocknal_recv_hello(struct lnet_ni *ni, ksock_conn_t *conn, +ksocknal_recv_hello(struct lnet_ni *ni, struct ksock_conn *conn, struct ksock_hello_msg *hello, struct lnet_process_id *peerid, __u64 *incarnation) @@ -1718,13 +1792,13 @@ ksocknal_recv_hello(struct lnet_ni *ni, ksock_conn_t *conn, int timeout; int proto_match; int rc; - ksock_proto_t *proto; - struct lnet_process_id recv_id; + const struct ksock_proto *proto; + struct lnet_process_id recv_id; /* socket type set on active connections - not set on passive */ LASSERT(!active == !(conn->ksnc_type != SOCKLND_CONN_NONE)); - timeout = active ? *ksocknal_tunables.ksnd_timeout : + timeout = active ? lnet_get_lnd_timeout() : lnet_acceptor_timeout(); rc = lnet_sock_read(sock, &hello->kshm_magic, @@ -1790,11 +1864,11 @@ ksocknal_recv_hello(struct lnet_ni *ni, ksock_conn_t *conn, *incarnation = hello->kshm_src_incarnation; - if (hello->kshm_src_nid == LNET_NID_ANY) { - CERROR("Expecting a HELLO hdr with a NID, but got LNET_NID_ANY" - "from %pI4h\n", &conn->ksnc_ipaddr); - return -EPROTO; - } + if (hello->kshm_src_nid == LNET_NID_ANY) { + CERROR("Expecting a HELLO hdr with a NID, but got LNET_NID_ANY from %pI4h\n", + &conn->ksnc_ipaddr); + return -EPROTO; + } if (!active && conn->ksnc_port > LNET_ACCEPTOR_MAX_RESERVED_PORT) { @@ -1848,19 +1922,18 @@ ksocknal_recv_hello(struct lnet_ni *ni, ksock_conn_t *conn, } static int -ksocknal_connect (ksock_route_t *route) +ksocknal_connect(struct ksock_route *route) { - struct list_head zombies = LIST_HEAD_INIT(zombies); - ksock_peer_ni_t *peer_ni = route->ksnr_peer; + LIST_HEAD(zombies); + struct ksock_peer_ni *peer_ni = route->ksnr_peer; int type; int wanted; struct socket *sock; - cfs_time_t deadline; + time64_t deadline; int retry_later = 0; int rc = 0; - deadline = cfs_time_add(cfs_time_current(), - cfs_time_seconds(*ksocknal_tunables.ksnd_timeout)); + deadline = ktime_get_seconds() + lnet_get_lnd_timeout(); write_lock_bh(&ksocknal_data.ksnd_global_lock); @@ -1904,7 +1977,7 @@ ksocknal_connect (ksock_route_t *route) write_unlock_bh(&ksocknal_data.ksnd_global_lock); - if (cfs_time_aftereq(cfs_time_current(), deadline)) { + if (ktime_get_seconds() >= deadline) { rc = -ETIMEDOUT; lnet_connect_console_error(rc, peer_ni->ksnp_id.nid, route->ksnr_ipaddr, @@ -1912,11 +1985,14 @@ ksocknal_connect (ksock_route_t *route) goto failed; } - rc = lnet_connect(&sock, peer_ni->ksnp_id.nid, - route->ksnr_myipaddr, - route->ksnr_ipaddr, route->ksnr_port); - if (rc != 0) - goto failed; + sock = lnet_connect(peer_ni->ksnp_id.nid, + route->ksnr_myiface, + route->ksnr_ipaddr, route->ksnr_port, + peer_ni->ksnp_ni->ni_net_ns); + if (IS_ERR(sock)) { + rc = PTR_ERR(sock); + goto failed; + } rc = ksocknal_create_conn(peer_ni->ksnp_ni, route, sock, type); if (rc < 0) { @@ -1949,10 +2025,9 @@ ksocknal_connect (ksock_route_t *route) * attempt to connect if we lost conn race, * but the race is resolved quickly usually, * so min_reconnectms should be good heuristic */ - route->ksnr_retry_interval = - cfs_time_seconds(*ksocknal_tunables.ksnd_min_reconnectms)/1000; - route->ksnr_timeout = cfs_time_add(cfs_time_current(), - route->ksnr_retry_interval); + route->ksnr_retry_interval = *ksocknal_tunables.ksnd_min_reconnectms / 1000; + route->ksnr_timeout = ktime_get_seconds() + + route->ksnr_retry_interval; } ksocknal_launch_connection_locked(route); @@ -1967,29 +2042,28 @@ ksocknal_connect (ksock_route_t *route) route->ksnr_scheduled = 0; route->ksnr_connecting = 0; - /* This is a retry rather than a new connection */ - route->ksnr_retry_interval *= 2; - route->ksnr_retry_interval = - MAX(route->ksnr_retry_interval, - cfs_time_seconds(*ksocknal_tunables.ksnd_min_reconnectms)/1000); - route->ksnr_retry_interval = - MIN(route->ksnr_retry_interval, - cfs_time_seconds(*ksocknal_tunables.ksnd_max_reconnectms)/1000); + /* This is a retry rather than a new connection */ + route->ksnr_retry_interval *= 2; + route->ksnr_retry_interval = + max_t(time64_t, route->ksnr_retry_interval, + *ksocknal_tunables.ksnd_min_reconnectms / 1000); + route->ksnr_retry_interval = + min_t(time64_t, route->ksnr_retry_interval, + *ksocknal_tunables.ksnd_max_reconnectms / 1000); - LASSERT (route->ksnr_retry_interval != 0); - route->ksnr_timeout = cfs_time_add(cfs_time_current(), - route->ksnr_retry_interval); + LASSERT(route->ksnr_retry_interval); + route->ksnr_timeout = ktime_get_seconds() + route->ksnr_retry_interval; if (!list_empty(&peer_ni->ksnp_tx_queue) && peer_ni->ksnp_accepting == 0 && ksocknal_find_connecting_route_locked(peer_ni) == NULL) { - ksock_conn_t *conn; + struct ksock_conn *conn; /* ksnp_tx_queue is queued on a conn on successful * connection for V1.x and V2.x */ if (!list_empty(&peer_ni->ksnp_conns)) { conn = list_entry(peer_ni->ksnp_conns.next, - ksock_conn_t, ksnc_list); + struct ksock_conn, ksnc_list); LASSERT (conn->ksnc_proto == &ksocknal_protocol_v3x); } @@ -2000,9 +2074,9 @@ ksocknal_connect (ksock_route_t *route) write_unlock_bh(&ksocknal_data.ksnd_global_lock); - ksocknal_peer_failed(peer_ni); - ksocknal_txlist_done(peer_ni->ksnp_ni, &zombies, 1); - return 0; + ksocknal_peer_failed(peer_ni); + ksocknal_txlist_done(peer_ni->ksnp_ni, &zombies, rc); + return 0; } /* @@ -2110,40 +2184,36 @@ ksocknal_connd_check_stop(time64_t sec, long *timeout) /* Go through connd_routes queue looking for a route that we can process * right now, @timeout_p can be updated if we need to come back later */ -static ksock_route_t * +static struct ksock_route * ksocknal_connd_get_route_locked(signed long *timeout_p) { - ksock_route_t *route; - cfs_time_t now; - - now = cfs_time_current(); + time64_t now = ktime_get_seconds(); + struct ksock_route *route; /* connd_routes can contain both pending and ordinary routes */ list_for_each_entry(route, &ksocknal_data.ksnd_connd_routes, ksnr_connd_list) { if (route->ksnr_retry_interval == 0 || - cfs_time_aftereq(now, route->ksnr_timeout)) + now >= route->ksnr_timeout) return route; if (*timeout_p == MAX_SCHEDULE_TIMEOUT || - (int)*timeout_p > (int)(route->ksnr_timeout - now)) - *timeout_p = (int)(route->ksnr_timeout - now); + *timeout_p > cfs_time_seconds(route->ksnr_timeout - now)) + *timeout_p = cfs_time_seconds(route->ksnr_timeout - now); } return NULL; } int -ksocknal_connd (void *arg) +ksocknal_connd(void *arg) { - spinlock_t *connd_lock = &ksocknal_data.ksnd_connd_lock; - ksock_connreq_t *cr; - wait_queue_t wait; - int nloops = 0; - int cons_retry = 0; - - cfs_block_allsigs(); + spinlock_t *connd_lock = &ksocknal_data.ksnd_connd_lock; + struct ksock_connreq *cr; + wait_queue_entry_t wait; + int nloops = 0; + int cons_retry = 0; init_waitqueue_entry(&wait, current); @@ -2154,7 +2224,7 @@ ksocknal_connd (void *arg) ksocknal_data.ksnd_connd_running++; while (!ksocknal_data.ksnd_shuttingdown) { - ksock_route_t *route = NULL; + struct ksock_route *route = NULL; time64_t sec = ktime_get_real_seconds(); long timeout = MAX_SCHEDULE_TIMEOUT; int dropped_lock = 0; @@ -2172,8 +2242,8 @@ ksocknal_connd (void *arg) if (!list_empty(&ksocknal_data.ksnd_connd_connreqs)) { /* Connection accepted by the listener */ - cr = list_entry(ksocknal_data.ksnd_connd_connreqs. \ - next, ksock_connreq_t, ksncr_list); + cr = list_entry(ksocknal_data.ksnd_connd_connreqs.next, + struct ksock_connreq, ksncr_list); list_del(&cr->ksncr_list); spin_unlock_bh(connd_lock); @@ -2236,7 +2306,6 @@ ksocknal_connd (void *arg) nloops = 0; schedule_timeout(timeout); - set_current_state(TASK_RUNNING); remove_wait_queue(&ksocknal_data.ksnd_connd_waitq, &wait); spin_lock_bh(connd_lock); } @@ -2247,16 +2316,18 @@ ksocknal_connd (void *arg) return 0; } -static ksock_conn_t * -ksocknal_find_timed_out_conn (ksock_peer_ni_t *peer_ni) +static struct ksock_conn * +ksocknal_find_timed_out_conn(struct ksock_peer_ni *peer_ni) { /* We're called with a shared lock on ksnd_global_lock */ - ksock_conn_t *conn; - struct list_head *ctmp; + struct ksock_conn *conn; + struct list_head *ctmp; + struct ksock_tx *tx; list_for_each(ctmp, &peer_ni->ksnp_conns) { - int error; - conn = list_entry(ctmp, ksock_conn_t, ksnc_list); + int error; + + conn = list_entry(ctmp, struct ksock_conn, ksnc_list); /* Don't need the {get,put}connsock dance to deref ksnc_sock */ LASSERT (!conn->ksnc_closing); @@ -2296,8 +2367,7 @@ ksocknal_find_timed_out_conn (ksock_peer_ni_t *peer_ni) } if (conn->ksnc_rx_started && - cfs_time_aftereq(cfs_time_current(), - conn->ksnc_rx_deadline)) { + ktime_get_seconds() >= conn->ksnc_rx_deadline) { /* Timed out incomplete incoming message */ ksocknal_conn_addref(conn); CNETERR("Timeout receiving from %s (%pI4h:%d), " @@ -2313,11 +2383,14 @@ ksocknal_find_timed_out_conn (ksock_peer_ni_t *peer_ni) if ((!list_empty(&conn->ksnc_tx_queue) || conn->ksnc_sock->sk->sk_wmem_queued != 0) && - cfs_time_aftereq(cfs_time_current(), - conn->ksnc_tx_deadline)) { + ktime_get_seconds() >= conn->ksnc_tx_deadline) { /* Timed out messages queued for sending or * buffered in the socket's send buffer */ ksocknal_conn_addref(conn); + list_for_each_entry(tx, &conn->ksnc_tx_queue, + tx_list) + tx->tx_hstatus = + LNET_MSG_STATUS_LOCAL_TIMEOUT; CNETERR("Timeout sending data to %s (%pI4h:%d) " "the network or that node may be down.\n", libcfs_id2str(peer_ni->ksnp_id), @@ -2330,37 +2403,37 @@ ksocknal_find_timed_out_conn (ksock_peer_ni_t *peer_ni) } static inline void -ksocknal_flush_stale_txs(ksock_peer_ni_t *peer_ni) +ksocknal_flush_stale_txs(struct ksock_peer_ni *peer_ni) { - ksock_tx_t *tx; - struct list_head stale_txs = LIST_HEAD_INIT(stale_txs); + struct ksock_tx *tx; + LIST_HEAD(stale_txs); write_lock_bh(&ksocknal_data.ksnd_global_lock); while (!list_empty(&peer_ni->ksnp_tx_queue)) { tx = list_entry(peer_ni->ksnp_tx_queue.next, - ksock_tx_t, tx_list); + struct ksock_tx, tx_list); - if (!cfs_time_aftereq(cfs_time_current(), - tx->tx_deadline)) - break; + if (ktime_get_seconds() < tx->tx_deadline) + break; - list_del(&tx->tx_list); - list_add_tail(&tx->tx_list, &stale_txs); - } + tx->tx_hstatus = LNET_MSG_STATUS_LOCAL_TIMEOUT; + + list_move_tail(&tx->tx_list, &stale_txs); + } write_unlock_bh(&ksocknal_data.ksnd_global_lock); - ksocknal_txlist_done(peer_ni->ksnp_ni, &stale_txs, 1); + ksocknal_txlist_done(peer_ni->ksnp_ni, &stale_txs, -ETIMEDOUT); } static int -ksocknal_send_keepalive_locked(ksock_peer_ni_t *peer_ni) +ksocknal_send_keepalive_locked(struct ksock_peer_ni *peer_ni) __must_hold(&ksocknal_data.ksnd_global_lock) { - ksock_sched_t *sched; - ksock_conn_t *conn; - ksock_tx_t *tx; + struct ksock_sched *sched; + struct ksock_conn *conn; + struct ksock_tx *tx; /* last_alive will be updated by create_conn */ if (list_empty(&peer_ni->ksnp_conns)) @@ -2370,18 +2443,16 @@ __must_hold(&ksocknal_data.ksnd_global_lock) return 0; if (*ksocknal_tunables.ksnd_keepalive <= 0 || - cfs_time_before(cfs_time_current(), - cfs_time_add(peer_ni->ksnp_last_alive, - cfs_time_seconds(*ksocknal_tunables.ksnd_keepalive)))) + ktime_get_seconds() < peer_ni->ksnp_last_alive + + *ksocknal_tunables.ksnd_keepalive) return 0; - if (cfs_time_before(cfs_time_current(), - peer_ni->ksnp_send_keepalive)) + if (ktime_get_seconds() < peer_ni->ksnp_send_keepalive) return 0; /* retry 10 secs later, so we wouldn't put pressure * on this peer_ni if we failed to send keepalive this time */ - peer_ni->ksnp_send_keepalive = cfs_time_shift(10); + peer_ni->ksnp_send_keepalive = ktime_get_seconds() + 10; conn = ksocknal_find_conn_locked(peer_ni, NULL, 1); if (conn != NULL) { @@ -2419,72 +2490,72 @@ __must_hold(&ksocknal_data.ksnd_global_lock) static void -ksocknal_check_peer_timeouts (int idx) +ksocknal_check_peer_timeouts(int idx) { - struct list_head *peers = &ksocknal_data.ksnd_peers[idx]; - ksock_peer_ni_t *peer_ni; - ksock_conn_t *conn; - ksock_tx_t *tx; + struct hlist_head *peers = &ksocknal_data.ksnd_peers[idx]; + struct ksock_peer_ni *peer_ni; + struct ksock_conn *conn; + struct ksock_tx *tx; again: - /* NB. We expect to have a look at all the peers and not find any - * connections to time out, so we just use a shared lock while we - * take a look... */ + /* NB. We expect to have a look at all the peers and not find any + * connections to time out, so we just use a shared lock while we + * take a look... + */ read_lock(&ksocknal_data.ksnd_global_lock); - list_for_each_entry(peer_ni, peers, ksnp_list) { - ksock_tx_t *tx_stale; - cfs_time_t deadline = 0; - int resid = 0; - int n = 0; + hlist_for_each_entry(peer_ni, peers, ksnp_list) { + struct ksock_tx *tx_stale; + time64_t deadline = 0; + int resid = 0; + int n = 0; - if (ksocknal_send_keepalive_locked(peer_ni) != 0) { + if (ksocknal_send_keepalive_locked(peer_ni) != 0) { read_unlock(&ksocknal_data.ksnd_global_lock); - goto again; - } + goto again; + } - conn = ksocknal_find_timed_out_conn (peer_ni); + conn = ksocknal_find_timed_out_conn(peer_ni); - if (conn != NULL) { + if (conn != NULL) { read_unlock(&ksocknal_data.ksnd_global_lock); - ksocknal_close_conn_and_siblings (conn, -ETIMEDOUT); + ksocknal_close_conn_and_siblings(conn, -ETIMEDOUT); - /* NB we won't find this one again, but we can't - * just proceed with the next peer_ni, since we dropped - * ksnd_global_lock and it might be dead already! */ - ksocknal_conn_decref(conn); - goto again; - } + /* NB we won't find this one again, but we can't + * just proceed with the next peer_ni, since we dropped + * ksnd_global_lock and it might be dead already! + */ + ksocknal_conn_decref(conn); + goto again; + } - /* we can't process stale txs right here because we're - * holding only shared lock */ + /* we can't process stale txs right here because we're + * holding only shared lock + */ if (!list_empty(&peer_ni->ksnp_tx_queue)) { - ksock_tx_t *tx = - list_entry(peer_ni->ksnp_tx_queue.next, - ksock_tx_t, tx_list); + struct ksock_tx *tx; - if (cfs_time_aftereq(cfs_time_current(), - tx->tx_deadline)) { - - ksocknal_peer_addref(peer_ni); + tx = list_entry(peer_ni->ksnp_tx_queue.next, + struct ksock_tx, tx_list); + if (ktime_get_seconds() >= tx->tx_deadline) { + ksocknal_peer_addref(peer_ni); read_unlock(&ksocknal_data.ksnd_global_lock); - ksocknal_flush_stale_txs(peer_ni); + ksocknal_flush_stale_txs(peer_ni); - ksocknal_peer_decref(peer_ni); - goto again; - } - } + ksocknal_peer_decref(peer_ni); + goto again; + } + } if (list_empty(&peer_ni->ksnp_zc_req_list)) - continue; + continue; tx_stale = NULL; spin_lock(&peer_ni->ksnp_lock); list_for_each_entry(tx, &peer_ni->ksnp_zc_req_list, tx_zc_list) { - if (!cfs_time_aftereq(cfs_time_current(), - tx->tx_deadline)) + if (ktime_get_seconds() < tx->tx_deadline) break; /* ignore the TX if connection is being closed */ if (tx->tx_conn->ksnc_closing) @@ -2508,10 +2579,10 @@ ksocknal_check_peer_timeouts (int idx) read_unlock(&ksocknal_data.ksnd_global_lock); CERROR("Total %d stale ZC_REQs for peer_ni %s detected; the " - "oldest(%p) timed out %ld secs ago, " + "oldest(%p) timed out %lld secs ago, " "resid: %d, wmem: %d\n", n, libcfs_nid2str(peer_ni->ksnp_id.nid), tx_stale, - cfs_duration_sec(cfs_time_current() - deadline), + ktime_get_seconds() - deadline, resid, conn->ksnc_sock->sk->sk_wmem_queued); ksocknal_close_conn_and_siblings (conn, -ETIMEDOUT); @@ -2524,29 +2595,24 @@ ksocknal_check_peer_timeouts (int idx) int ksocknal_reaper(void *arg) { - wait_queue_t wait; - ksock_conn_t *conn; - ksock_sched_t *sched; - struct list_head enomem_conns; - int nenomem_conns; - cfs_duration_t timeout; - int i; - int peer_index = 0; - cfs_time_t deadline = cfs_time_current(); - - cfs_block_allsigs (); - - INIT_LIST_HEAD(&enomem_conns); + wait_queue_entry_t wait; + struct ksock_conn *conn; + struct ksock_sched *sched; + LIST_HEAD(enomem_conns); + int nenomem_conns; + time64_t timeout; + int i; + int peer_index = 0; + time64_t deadline = ktime_get_seconds(); + init_waitqueue_entry(&wait, current); spin_lock_bh(&ksocknal_data.ksnd_reaper_lock); while (!ksocknal_data.ksnd_shuttingdown) { - if (!list_empty(&ksocknal_data.ksnd_deathrow_conns)) { - conn = list_entry(ksocknal_data. \ - ksnd_deathrow_conns.next, - ksock_conn_t, ksnc_list); + conn = list_entry(ksocknal_data.ksnd_deathrow_conns.next, + struct ksock_conn, ksnc_list); list_del(&conn->ksnc_list); spin_unlock_bh(&ksocknal_data.ksnd_reaper_lock); @@ -2559,8 +2625,8 @@ int ksocknal_reaper(void *arg) } if (!list_empty(&ksocknal_data.ksnd_zombie_conns)) { - conn = list_entry(ksocknal_data.ksnd_zombie_conns.\ - next, ksock_conn_t, ksnc_list); + conn = list_entry(ksocknal_data.ksnd_zombie_conns.next, + struct ksock_conn, ksnc_list); list_del(&conn->ksnc_list); spin_unlock_bh(&ksocknal_data.ksnd_reaper_lock); @@ -2568,14 +2634,11 @@ int ksocknal_reaper(void *arg) ksocknal_destroy_conn(conn); spin_lock_bh(&ksocknal_data.ksnd_reaper_lock); - continue; - } + continue; + } - if (!list_empty(&ksocknal_data.ksnd_enomem_conns)) { - list_add(&enomem_conns, - &ksocknal_data.ksnd_enomem_conns); - list_del_init(&ksocknal_data.ksnd_enomem_conns); - } + list_splice_init(&ksocknal_data.ksnd_enomem_conns, + &enomem_conns); spin_unlock_bh(&ksocknal_data.ksnd_reaper_lock); @@ -2583,7 +2646,7 @@ int ksocknal_reaper(void *arg) nenomem_conns = 0; while (!list_empty(&enomem_conns)) { conn = list_entry(enomem_conns.next, - ksock_conn_t, ksnc_tx_list); + struct ksock_conn, ksnc_tx_list); list_del(&conn->ksnc_tx_list); sched = conn->ksnc_scheduler; @@ -2600,34 +2663,35 @@ int ksocknal_reaper(void *arg) nenomem_conns++; } - /* careful with the jiffy wrap... */ - while ((timeout = cfs_time_sub(deadline, - cfs_time_current())) <= 0) { - const int n = 4; - const int p = 1; - int chunk = ksocknal_data.ksnd_peer_hash_size; - - /* Time to check for timeouts on a few more peers: I do - * checks every 'p' seconds on a proportion of the peer_ni - * table and I need to check every connection 'n' times - * within a timeout interval, to ensure I detect a - * timeout on any connection within (n+1)/n times the - * timeout interval. */ - - if (*ksocknal_tunables.ksnd_timeout > n * p) - chunk = (chunk * n * p) / - *ksocknal_tunables.ksnd_timeout; - if (chunk == 0) - chunk = 1; - - for (i = 0; i < chunk; i++) { - ksocknal_check_peer_timeouts (peer_index); - peer_index = (peer_index + 1) % - ksocknal_data.ksnd_peer_hash_size; - } + /* careful with the jiffy wrap... */ + while ((timeout = deadline - ktime_get_seconds()) <= 0) { + const int n = 4; + const int p = 1; + int chunk = HASH_SIZE(ksocknal_data.ksnd_peers); + unsigned int lnd_timeout; + + /* Time to check for timeouts on a few more peers: I + * do checks every 'p' seconds on a proportion of the + * peer_ni table and I need to check every connection + * 'n' times within a timeout interval, to ensure I + * detect a timeout on any connection within (n+1)/n + * times the timeout interval. + */ + + lnd_timeout = lnet_get_lnd_timeout(); + if (lnd_timeout > n * p) + chunk = (chunk * n * p) / lnd_timeout; + if (chunk == 0) + chunk = 1; + + for (i = 0; i < chunk; i++) { + ksocknal_check_peer_timeouts(peer_index); + peer_index = (peer_index + 1) % + HASH_SIZE(ksocknal_data.ksnd_peers); + } - deadline = cfs_time_add(deadline, cfs_time_seconds(p)); - } + deadline += p; + } if (nenomem_conns != 0) { /* Reduce my timeout if I rescheduled ENOMEM conns. @@ -2635,16 +2699,16 @@ int ksocknal_reaper(void *arg) * if any go back on my enomem list. */ timeout = SOCKNAL_ENOMEM_RETRY; } - ksocknal_data.ksnd_reaper_waketime = - cfs_time_add(cfs_time_current(), timeout); + ksocknal_data.ksnd_reaper_waketime = ktime_get_seconds() + + timeout; - set_current_state(TASK_INTERRUPTIBLE); + set_current_state(TASK_INTERRUPTIBLE); add_wait_queue(&ksocknal_data.ksnd_reaper_waitq, &wait); if (!ksocknal_data.ksnd_shuttingdown && list_empty(&ksocknal_data.ksnd_deathrow_conns) && list_empty(&ksocknal_data.ksnd_zombie_conns)) - schedule_timeout(timeout); + schedule_timeout(cfs_time_seconds(timeout)); set_current_state(TASK_RUNNING); remove_wait_queue(&ksocknal_data.ksnd_reaper_waitq, &wait);