/*
* 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 <zab@zabbo.net>
* Author: Peter J. Braam <braam@clusterfs.com>
* Author: Phil Schwan <phil@clusterfs.com>
* Author: Eric Barton <eric@bartonsoftware.com>
*
- * 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
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);
}
static int
-ksocknal_send_iov(struct ksock_conn *conn, struct ksock_tx *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(struct ksock_conn *conn, struct ksock_tx *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;
- 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->kiov_len) {
+ kiov->kiov_offset += nob;
+ kiov->kiov_len -= nob;
+ return rc;
+ }
- nob -= (int)kiov->kiov_len;
- tx->tx_kiov = ++kiov;
- tx->tx_nkiov--;
- } while (nob != 0);
+ nob -= (int)kiov->kiov_len;
+ tx->tx_kiov = ++kiov;
+ tx->tx_nkiov--;
+ } while (nob != 0);
- return (rc);
+ return rc;
}
static int
-ksocknal_transmit(struct ksock_conn *conn, struct ksock_tx *tx)
+ksocknal_transmit(struct ksock_conn *conn, struct ksock_tx *tx,
+ struct kvec *scratch_iov)
{
int rc;
int bufnob;
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 = ktime_get_seconds() +
- *ksocknal_tunables.ksnd_timeout;
+ 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(struct ksock_conn *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 = ktime_get_seconds();
conn->ksnc_rx_deadline = ktime_get_seconds() +
- *ksocknal_tunables.ksnd_timeout;
+ 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(struct ksock_conn *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);
+ 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 = ktime_get_seconds();
conn->ksnc_rx_deadline = ktime_get_seconds() +
- *ksocknal_tunables.ksnd_timeout;
+ 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->kiov_len) {
+ kiov->kiov_offset += nob;
+ kiov->kiov_len -= nob;
+ return -EAGAIN;
+ }
- nob -= kiov->kiov_len;
- conn->ksnc_rx_kiov = ++kiov;
- conn->ksnc_rx_nkiov--;
- } while (nob != 0);
+ nob -= kiov->kiov_len;
+ conn->ksnc_rx_kiov = ++kiov;
+ conn->ksnc_rx_nkiov--;
+ } while (nob != 0);
- return 1;
+ return 1;
}
static int
-ksocknal_receive(struct ksock_conn *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) {
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);
- 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;
- }
+ 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);
- /* Completed a fragment */
+ 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 (conn->ksnc_rx_nob_wanted == 0) {
- rc = 1;
- break;
- }
- }
+ /* Completed a fragment */
- ksocknal_connsock_decref(conn);
- RETURN (rc);
+ if (conn->ksnc_rx_nob_wanted == 0) {
+ rc = 1;
+ break;
+ }
+ }
+
+ ksocknal_connsock_decref(conn);
+ RETURN(rc);
}
void
ksocknal_tx_done(struct lnet_ni *ni, struct ksock_tx *tx, int rc)
{
struct lnet_msg *lnetmsg = tx->tx_lnetmsg;
+ enum lnet_msg_hstatus hstatus = tx->tx_hstatus;
ENTRY;
LASSERT(ni != NULL || tx->tx_conn != NULL);
- if (!rc && (tx->tx_resid != 0 || tx->tx_zc_aborted))
+ 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 (tx->tx_conn != NULL)
ksocknal_conn_decref(tx->tx_conn);
ksocknal_free_tx(tx);
- if (lnetmsg != NULL) /* KSOCK_MSG_NOOP go without lnetmsg */
+ if (lnetmsg != NULL) { /* KSOCK_MSG_NOOP go without lnetmsg */
+ lnetmsg->msg_health_status = hstatus;
lnet_finalize(lnetmsg, rc);
+ }
EXIT;
}
list_del(&tx->tx_list);
+ 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);
}
/* ZC_REQ is going to be pinned to the peer_ni */
tx->tx_deadline = ktime_get_seconds() +
- *ksocknal_tunables.ksnd_timeout;
+ lnet_get_lnd_timeout();
LASSERT (tx->tx_msg.ksm_zc_cookies[0] == 0);
}
static int
-ksocknal_process_transmit(struct ksock_conn *conn, struct ksock_tx *tx)
+ksocknal_process_transmit(struct ksock_conn *conn, struct ksock_tx *tx,
+ struct kvec *scratch_iov)
{
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);
+
+ return 0;
+ }
- if (rc == -EAGAIN)
- return (rc);
+ if (rc == -EAGAIN)
+ return rc;
- if (rc == -ENOMEM) {
- static int counter;
+ if (rc == -ENOMEM) {
+ static int counter;
- counter++; /* exponential backoff warnings */
- if ((counter & (-counter)) == counter)
- CWARN("%u ENOMEM tx %p (%u allocated)\n",
+ 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);
+ &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
if (list_empty(&conn->ksnc_tx_queue) && bufnob == 0) {
/* First packet starts the timeout */
conn->ksnc_tx_deadline = ktime_get_seconds() +
- *ksocknal_tunables.ksnd_timeout;
+ lnet_get_lnd_timeout();
if (conn->ksnc_tx_bufnob > 0) /* something got ACKed */
conn->ksnc_peer->ksnp_last_alive = ktime_get_seconds();
conn->ksnc_tx_bufnob = 0;
ksocknal_find_connecting_route_locked (peer_ni) != NULL) {
/* the message is going to be pinned to the peer_ni */
tx->tx_deadline = ktime_get_seconds() +
- *ksocknal_tunables.ksnd_timeout;
+ lnet_get_lnd_timeout();
/* Queue the message until a connection is established */
list_add_tail(&tx->tx_list, &peer_ni->ksnp_tx_queue);
/* 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);
}
if (rc == 0)
return (0);
+ lntmsg->msg_health_status = tx->tx_hstatus;
ksocknal_free_tx(tx);
return (-EIO);
}
}
static int
-ksocknal_process_receive(struct ksock_conn *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;
/* 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;
le64_to_cpu(lhdr->src_nid) != id->nid);
}
- lnet_finalize(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);
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;
int ksocknal_scheduler(void *arg)
{
- struct ksock_sched_info *info;
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)];
+
+ 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;
+ }
- info = ksocknal_data.ksnd_sched_info[KSOCK_THREAD_CPT(id)];
- sched = &info->ksi_scheds[KSOCK_THREAD_SID(id)];
+ 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;
+ }
cfs_block_allsigs();
- 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,
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);
+ &sched->kss_zombie_noop_txs);
list_del_init(&sched->kss_zombie_noop_txs);
- }
+ }
conn = list_entry(sched->kss_tx_conns.next,
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,
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));
}
spin_unlock_bh(&sched->kss_lock);
+ LIBCFS_FREE(rx_scratch_pgs, sizeof(*rx_scratch_pgs) *
+ LNET_MAX_IOV);
+ LIBCFS_FREE(scratch_iov, sizeof(*scratch_iov) *
+ LNET_MAX_IOV);
ksocknal_thread_fini();
return 0;
}
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;
/* CAVEAT EMPTOR: this byte flips 'ipaddrs' */
struct ksock_net *net = (struct ksock_net *)ni->ni_data;
- LASSERT(hello->kshm_nips <= LNET_NUM_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);
/* 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,
*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) {
static int
ksocknal_connect(struct ksock_route *route)
{
- struct list_head zombies = LIST_HEAD_INIT(zombies);
+ LIST_HEAD(zombies);
struct ksock_peer_ni *peer_ni = route->ksnr_peer;
int type;
int wanted;
int retry_later = 0;
int rc = 0;
- deadline = ktime_get_seconds() + *ksocknal_tunables.ksnd_timeout;
+ deadline = ktime_get_seconds() + lnet_get_lnd_timeout();
write_lock_bh(&ksocknal_data.ksnd_global_lock);
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;
+ rc = lnet_connect(&sock, peer_ni->ksnp_id.nid,
+ route->ksnr_myipaddr,
+ route->ksnr_ipaddr, route->ksnr_port,
+ peer_ni->ksnp_ni->ni_net_ns);
+ if (rc != 0)
+ goto failed;
rc = ksocknal_create_conn(peer_ni->ksnp_ni, route, sock, type);
if (rc < 0) {
{
spinlock_t *connd_lock = &ksocknal_data.ksnd_connd_lock;
struct ksock_connreq *cr;
- wait_queue_t wait;
+ wait_queue_entry_t wait;
int nloops = 0;
int cons_retry = 0;
/* We're called with a shared lock on ksnd_global_lock */
struct ksock_conn *conn;
struct list_head *ctmp;
+ struct ksock_tx *tx;
list_for_each(ctmp, &peer_ni->ksnp_conns) {
int error;
/* 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),
ksocknal_flush_stale_txs(struct ksock_peer_ni *peer_ni)
{
struct ksock_tx *tx;
- struct list_head stale_txs = LIST_HEAD_INIT(stale_txs);
+ LIST_HEAD(stale_txs);
write_lock_bh(&ksocknal_data.ksnd_global_lock);
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);
static void
ksocknal_check_peer_timeouts(int idx)
{
- struct list_head *peers = &ksocknal_data.ksnd_peers[idx];
+ 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) {
+ 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)) {
struct ksock_tx *tx;
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);
+ 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);
int ksocknal_reaper(void *arg)
{
- wait_queue_t wait;
+ wait_queue_entry_t wait;
struct ksock_conn *conn;
struct ksock_sched *sched;
- struct list_head enomem_conns;
+ LIST_HEAD(enomem_conns);
int nenomem_conns;
time64_t timeout;
int i;
cfs_block_allsigs ();
- INIT_LIST_HEAD(&enomem_conns);
init_waitqueue_entry(&wait, current);
spin_lock_bh(&ksocknal_data.ksnd_reaper_lock);
nenomem_conns++;
}
- /* careful with the jiffy wrap... */
+ /* careful with the jiffy wrap... */
while ((timeout = deadline - ktime_get_seconds()) <= 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;
- }
+ 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 += p;
- }
+ }
if (nenomem_conns != 0) {
/* Reduce my timeout if I rescheduled ENOMEM conns.
if (!ksocknal_data.ksnd_shuttingdown &&
list_empty(&ksocknal_data.ksnd_deathrow_conns) &&
list_empty(&ksocknal_data.ksnd_zombie_conns))
- schedule_timeout(cfs_duration_sec(timeout));
+ schedule_timeout(cfs_time_seconds(timeout));
set_current_state(TASK_RUNNING);
remove_wait_queue(&ksocknal_data.ksnd_reaper_waitq, &wait);