/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
+ *
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
*/
#include "socklnd.h"
-# if CONFIG_SYSCTL && !CFS_SYSFS_MODULE_PARM
-static ctl_table ksocknal_ctl_table[21];
+# if defined(CONFIG_SYSCTL) && !CFS_SYSFS_MODULE_PARM
+
+#ifndef HAVE_SYSCTL_UNNUMBERED
+
+enum {
+ SOCKLND_TIMEOUT = 1,
+ SOCKLND_CREDITS,
+ SOCKLND_PEER_CREDITS,
+ SOCKLND_NCONNDS,
+ SOCKLND_RECONNECTS_MIN,
+ SOCKLND_RECONNECTS_MAX,
+ SOCKLND_EAGER_ACK,
+ SOCKLND_ZERO_COPY,
+ SOCKLND_TYPED,
+ SOCKLND_BULK_MIN,
+ SOCKLND_RX_BUFFER_SIZE,
+ SOCKLND_TX_BUFFER_SIZE,
+ SOCKLND_NAGLE,
+ SOCKLND_IRQ_AFFINITY,
+ SOCKLND_ROUND_ROBIN,
+ SOCKLND_KEEPALIVE,
+ SOCKLND_KEEPALIVE_IDLE,
+ SOCKLND_KEEPALIVE_COUNT,
+ SOCKLND_KEEPALIVE_INTVL,
+ SOCKLND_BACKOFF_INIT,
+ SOCKLND_BACKOFF_MAX,
+ SOCKLND_PROTOCOL,
+ SOCKLND_ZERO_COPY_RECV,
+ SOCKLND_ZERO_COPY_RECV_MIN_NFRAGS
+};
+#else
+
+#define SOCKLND_TIMEOUT CTL_UNNUMBERED
+#define SOCKLND_CREDITS CTL_UNNUMBERED
+#define SOCKLND_PEER_CREDITS CTL_UNNUMBERED
+#define SOCKLND_NCONNDS CTL_UNNUMBERED
+#define SOCKLND_RECONNECTS_MIN CTL_UNNUMBERED
+#define SOCKLND_RECONNECTS_MAX CTL_UNNUMBERED
+#define SOCKLND_EAGER_ACK CTL_UNNUMBERED
+#define SOCKLND_ZERO_COPY CTL_UNNUMBERED
+#define SOCKLND_TYPED CTL_UNNUMBERED
+#define SOCKLND_BULK_MIN CTL_UNNUMBERED
+#define SOCKLND_RX_BUFFER_SIZE CTL_UNNUMBERED
+#define SOCKLND_TX_BUFFER_SIZE CTL_UNNUMBERED
+#define SOCKLND_NAGLE CTL_UNNUMBERED
+#define SOCKLND_IRQ_AFFINITY CTL_UNNUMBERED
+#define SOCKLND_ROUND_ROBIN CTL_UNNUMBERED
+#define SOCKLND_KEEPALIVE CTL_UNNUMBERED
+#define SOCKLND_KEEPALIVE_IDLE CTL_UNNUMBERED
+#define SOCKLND_KEEPALIVE_COUNT CTL_UNNUMBERED
+#define SOCKLND_KEEPALIVE_INTVL CTL_UNNUMBERED
+#define SOCKLND_BACKOFF_INIT CTL_UNNUMBERED
+#define SOCKLND_BACKOFF_MAX CTL_UNNUMBERED
+#define SOCKLND_PROTOCOL CTL_UNNUMBERED
+#define SOCKLND_ZERO_COPY_RECV CTL_UNNUMBERED
+#define SOCKLND_ZERO_COPY_RECV_MIN_NFRAGS CTL_UNNUMBERED
+#endif
+
+static cfs_sysctl_table_t ksocknal_ctl_table[] = {
+ {
+ .ctl_name = SOCKLND_TIMEOUT,
+ .procname = "timeout",
+ .data = &ksocknal_tunables.ksnd_timeout,
+ .maxlen = sizeof (int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ },
+ {
+ .ctl_name = SOCKLND_CREDITS,
+ .procname = "credits",
+ .data = &ksocknal_tunables.ksnd_credits,
+ .maxlen = sizeof (int),
+ .mode = 0444,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ },
+ {
+ .ctl_name = SOCKLND_PEER_CREDITS,
+ .procname = "peer_credits",
+ .data = &ksocknal_tunables.ksnd_peercredits,
+ .maxlen = sizeof (int),
+ .mode = 0444,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ },
+ {
+ .ctl_name = SOCKLND_NCONNDS,
+ .procname = "nconnds",
+ .data = &ksocknal_tunables.ksnd_nconnds,
+ .maxlen = sizeof (int),
+ .mode = 0444,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ },
+ {
+ .ctl_name = SOCKLND_RECONNECTS_MIN,
+ .procname = "min_reconnectms",
+ .data = &ksocknal_tunables.ksnd_min_reconnectms,
+ .maxlen = sizeof (int),
+ .mode = 0444,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ },
+ {
+ .ctl_name = SOCKLND_RECONNECTS_MAX,
+ .procname = "max_reconnectms",
+ .data = &ksocknal_tunables.ksnd_max_reconnectms,
+ .maxlen = sizeof (int),
+ .mode = 0444,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ },
+ {
+ .ctl_name = SOCKLND_EAGER_ACK,
+ .procname = "eager_ack",
+ .data = &ksocknal_tunables.ksnd_eager_ack,
+ .maxlen = sizeof (int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ },
+ {
+ .ctl_name = SOCKLND_ZERO_COPY,
+ .procname = "zero_copy",
+ .data = &ksocknal_tunables.ksnd_zc_min_payload,
+ .maxlen = sizeof (int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ },
+ {
+ .ctl_name = SOCKLND_ZERO_COPY_RECV,
+ .procname = "zero_copy_recv",
+ .data = &ksocknal_tunables.ksnd_zc_recv,
+ .maxlen = sizeof (int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ },
-ctl_table ksocknal_top_ctl_table[] = {
- {200, "socknal", NULL, 0, 0555, ksocknal_ctl_table},
+ {
+ .ctl_name = SOCKLND_ZERO_COPY_RECV_MIN_NFRAGS,
+ .procname = "zero_copy_recv",
+ .data = &ksocknal_tunables.ksnd_zc_recv_min_nfrags,
+ .maxlen = sizeof (int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ },
+ {
+ .ctl_name = SOCKLND_TYPED,
+ .procname = "typed",
+ .data = &ksocknal_tunables.ksnd_typed_conns,
+ .maxlen = sizeof (int),
+ .mode = 0444,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ },
+ {
+ .ctl_name = SOCKLND_BULK_MIN,
+ .procname = "min_bulk",
+ .data = &ksocknal_tunables.ksnd_min_bulk,
+ .maxlen = sizeof (int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ },
+ {
+ .ctl_name = SOCKLND_RX_BUFFER_SIZE,
+ .procname = "rx_buffer_size",
+ .data = &ksocknal_tunables.ksnd_rx_buffer_size,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ },
+ {
+ .ctl_name = SOCKLND_TX_BUFFER_SIZE,
+ .procname = "tx_buffer_size",
+ .data = &ksocknal_tunables.ksnd_tx_buffer_size,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ },
+ {
+ .ctl_name = SOCKLND_NAGLE,
+ .procname = "nagle",
+ .data = &ksocknal_tunables.ksnd_nagle,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ },
+#ifdef CPU_AFFINITY
+ {
+ .ctl_name = SOCKLND_IRQ_AFFINITY,
+ .procname = "irq_affinity",
+ .data = &ksocknal_tunables.ksnd_irq_affinity,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ },
+#endif
+ {
+ .ctl_name = SOCKLND_ROUND_ROBIN,
+ .procname = "round_robin",
+ .data = &ksocknal_tunables.ksnd_round_robin,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec
+ .strategy = &sysctl_intvec,
+ },
+ {
+ .ctl_name = SOCKLND_KEEPALIVE,
+ .procname = "keepalive",
+ .data = &ksocknal_tunables.ksnd_keepalive,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec
+ .strategy = &sysctl_intvec,
+ },
+ {
+ .ctl_name = SOCKLND_KEEPALIVE_IDLE,
+ .procname = "keepalive_idle",
+ .data = &ksocknal_tunables.ksnd_keepalive_idle,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ },
+ {
+ .ctl_name = SOCKLND_KEEPALIVE_COUNT,
+ .procname = "keepalive_count",
+ .data = &ksocknal_tunables.ksnd_keepalive_count,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ },
+ {
+ .ctl_name = SOCKLND_KEEPALIVE_INTVL,
+ .procname = "keepalive_intvl",
+ .data = &ksocknal_tunables.ksnd_keepalive_intvl,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ },
+#ifdef SOCKNAL_BACKOFF
+ {
+ .ctl_name = SOCKLND_BACKOFF_INIT,
+ .procname = "backoff_init",
+ .data = &ksocknal_tunables.ksnd_backoff_init,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ },
+ {
+ .ctl_name = SOCKLND_BACKOFF_MAX,
+ .procname = "backoff_max",
+ .data = &ksocknal_tunables.ksnd_backoff_max,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ },
+#endif
+#if SOCKNAL_VERSION_DEBUG
+ {
+ .ctl_name = SOCKLND_PROTOCOL,
+ .procname = "protocol",
+ .data = &ksocknal_tunables.ksnd_protocol,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ },
+#endif
+ {0}
+};
+
+
+cfs_sysctl_table_t ksocknal_top_ctl_table[] = {
+ {
+ .ctl_name = CTL_SOCKLND,
+ .procname = "socknal",
+ .data = NULL,
+ .maxlen = 0,
+ .mode = 0555,
+ .child = ksocknal_ctl_table
+ },
{ 0 }
};
int
ksocknal_lib_tunables_init ()
{
- int i = 0;
- int j = 1;
-
- ksocknal_ctl_table[i++] = (ctl_table)
- {j++, "timeout", ksocknal_tunables.ksnd_timeout,
- sizeof (int), 0644, NULL, &proc_dointvec};
- ksocknal_ctl_table[i++] = (ctl_table)
- {j++, "credits", ksocknal_tunables.ksnd_credits,
- sizeof (int), 0444, NULL, &proc_dointvec};
- ksocknal_ctl_table[i++] = (ctl_table)
- {j++, "peer_credits", ksocknal_tunables.ksnd_peercredits,
- sizeof (int), 0444, NULL, &proc_dointvec};
- ksocknal_ctl_table[i++] = (ctl_table)
- {j++, "nconnds", ksocknal_tunables.ksnd_nconnds,
- sizeof (int), 0444, NULL, &proc_dointvec};
- ksocknal_ctl_table[i++] = (ctl_table)
- {j++, "min_reconnectms", ksocknal_tunables.ksnd_min_reconnectms,
- sizeof (int), 0444, NULL, &proc_dointvec};
- ksocknal_ctl_table[i++] = (ctl_table)
- {j++, "max_reconnectms", ksocknal_tunables.ksnd_max_reconnectms,
- sizeof (int), 0444, NULL, &proc_dointvec};
- ksocknal_ctl_table[i++] = (ctl_table)
- {j++, "eager_ack", ksocknal_tunables.ksnd_eager_ack,
- sizeof (int), 0644, NULL, &proc_dointvec};
- ksocknal_ctl_table[i++] = (ctl_table)
- {j++, "zero_copy", ksocknal_tunables.ksnd_zc_min_frag,
- sizeof (int), 0644, NULL, &proc_dointvec};
- ksocknal_ctl_table[i++] = (ctl_table)
- {j++, "typed", ksocknal_tunables.ksnd_typed_conns,
- sizeof (int), 0444, NULL, &proc_dointvec};
- ksocknal_ctl_table[i++] = (ctl_table)
- {j++, "min_bulk", ksocknal_tunables.ksnd_min_bulk,
- sizeof (int), 0644, NULL, &proc_dointvec};
- ksocknal_ctl_table[i++] = (ctl_table)
- {j++, "rx_buffer_size", ksocknal_tunables.ksnd_rx_buffer_size,
- sizeof(int), 0644, NULL, &proc_dointvec};
- ksocknal_ctl_table[i++] = (ctl_table)
- {j++, "tx_buffer_size", ksocknal_tunables.ksnd_tx_buffer_size,
- sizeof(int), 0644, NULL, &proc_dointvec};
- ksocknal_ctl_table[i++] = (ctl_table)
- {j++, "nagle", ksocknal_tunables.ksnd_nagle,
- sizeof(int), 0644, NULL, &proc_dointvec};
-#if CPU_AFFINITY
- ksocknal_ctl_table[i++] = (ctl_table)
- {j++, "irq_affinity", ksocknal_tunables.ksnd_irq_affinity,
- sizeof(int), 0644, NULL, &proc_dointvec};
-#endif
- ksocknal_ctl_table[i++] = (ctl_table)
- {j++, "keepalive_idle", ksocknal_tunables.ksnd_keepalive_idle,
- sizeof(int), 0644, NULL, &proc_dointvec};
- ksocknal_ctl_table[i++] = (ctl_table)
- {j++, "keepalive_count", ksocknal_tunables.ksnd_keepalive_count,
- sizeof(int), 0644, NULL, &proc_dointvec};
- ksocknal_ctl_table[i++] = (ctl_table)
- {j++, "keepalive_intvl", ksocknal_tunables.ksnd_keepalive_intvl,
- sizeof(int), 0644, NULL, &proc_dointvec};
-#ifdef SOCKNAL_BACKOFF
- ksocknal_ctl_table[i++] = (ctl_table)
- {j++, "backoff_init", ksocknal_tunables.ksnd_backoff_init,
- sizeof(int), 0644, NULL, &proc_dointvec};
- ksocknal_ctl_table[i++] = (ctl_table)
- {j++, "backoff_max", ksocknal_tunables.ksnd_backoff_max,
- sizeof(int), 0644, NULL, &proc_dointvec};
+ if (!*ksocknal_tunables.ksnd_typed_conns) {
+ int rc = -EINVAL;
+#if SOCKNAL_VERSION_DEBUG
+ if (*ksocknal_tunables.ksnd_protocol < 3)
+ rc = 0;
#endif
+ if (rc != 0) {
+ CERROR("Protocol V3.x MUST have typed connections\n");
+ return rc;
+ }
+ }
- LASSERT (j == i+1);
- LASSERT (i < sizeof(ksocknal_ctl_table)/sizeof(ksocknal_ctl_table[0]));
+ if (*ksocknal_tunables.ksnd_zc_recv_min_nfrags < 2)
+ *ksocknal_tunables.ksnd_zc_recv_min_nfrags = 2;
+ if (*ksocknal_tunables.ksnd_zc_recv_min_nfrags > LNET_MAX_IOV)
+ *ksocknal_tunables.ksnd_zc_recv_min_nfrags = LNET_MAX_IOV;
ksocknal_tunables.ksnd_sysctl =
- register_sysctl_table(ksocknal_top_ctl_table, 0);
+ cfs_register_sysctl_table(ksocknal_top_ctl_table, 0);
if (ksocknal_tunables.ksnd_sysctl == NULL)
- CWARN("Can't setup /proc tunables\n");
+ CWARN("Can't setup /proc tunables\n");
- return 0;
+ return 0;
}
void
ksocknal_lib_tunables_fini ()
{
if (ksocknal_tunables.ksnd_sysctl != NULL)
- unregister_sysctl_table(ksocknal_tunables.ksnd_sysctl);
+ cfs_unregister_sysctl_table(ksocknal_tunables.ksnd_sysctl);
}
#else
int
ksocknal_lib_tunables_init ()
{
- return 0;
+ return 0;
}
void
void
ksocknal_lib_bind_irq (unsigned int irq)
{
-#if (defined(CONFIG_SMP) && CPU_AFFINITY)
+#if (defined(CONFIG_SMP) && defined(CPU_AFFINITY))
int bind;
int cpu;
char cmdline[64];
info = &ksocknal_data.ksnd_irqinfo[irq];
- write_lock_bh (&ksocknal_data.ksnd_global_lock);
+ cfs_write_lock_bh (&ksocknal_data.ksnd_global_lock);
LASSERT (info->ksni_valid);
bind = !info->ksni_bound;
info->ksni_bound = 1;
- write_unlock_bh (&ksocknal_data.ksnd_global_lock);
+ cfs_write_unlock_bh (&ksocknal_data.ksnd_global_lock);
if (!bind) /* bound already */
return;
"echo %d > /proc/irq/%u/smp_affinity", 1 << cpu, irq);
LCONSOLE_INFO("Binding irq %u to CPU %d with cmd: %s\n",
- irq, cpu, cmdline);
+ irq, cpu, cmdline);
/* FIXME: Find a better method of setting IRQ affinity...
*/
ksocknal_lib_get_conn_addrs (ksock_conn_t *conn)
{
int rc = libcfs_sock_getaddr(conn->ksnc_sock, 1,
- &conn->ksnc_ipaddr,
- &conn->ksnc_port);
+ &conn->ksnc_ipaddr,
+ &conn->ksnc_port);
/* Didn't need the {get,put}connsock dance to deref ksnc_sock... */
LASSERT (!conn->ksnc_closing);
}
rc = libcfs_sock_getaddr(conn->ksnc_sock, 0,
- &conn->ksnc_myipaddr, NULL);
+ &conn->ksnc_myipaddr, NULL);
if (rc != 0) {
CERROR ("Error %d getting sock local IP\n", rc);
return rc;
ksocknal_lib_sock_irq (struct socket *sock)
{
int irq = 0;
-#if CPU_AFFINITY
+#ifdef CPU_AFFINITY
struct dst_entry *dst;
if (!*ksocknal_tunables.ksnd_irq_affinity)
}
int
-ksocknal_lib_zc_capable(struct socket *sock)
+ksocknal_lib_zc_capable(ksock_conn_t *conn)
{
- int caps = sock->sk->sk_route_caps;
-
+ int caps = conn->ksnc_sock->sk->sk_route_caps;
+
+ if (conn->ksnc_proto == &ksocknal_protocol_v1x)
+ return 0;
+
/* ZC if the socket supports scatter/gather and doesn't need software
* checksums */
return ((caps & NETIF_F_SG) != 0 &&
struct iovec *scratchiov = &scratch;
unsigned int niov = 1;
#else
- struct iovec *scratchiov = conn->ksnc_tx_scratch_iov;
+ struct iovec *scratchiov = conn->ksnc_scheduler->kss_scratch_iov;
unsigned int niov = tx->tx_niov;
#endif
struct msghdr msg = {
rc = sock_sendmsg(sock, &msg, nob);
set_fs (oldmm);
}
- return rc;
+ return rc;
}
int
ksocknal_lib_send_kiov (ksock_conn_t *conn, ksock_tx_t *tx)
{
struct socket *sock = conn->ksnc_sock;
- lnet_kiov_t *kiov = tx->tx_kiov;
+ lnet_kiov_t *kiov = tx->tx_kiov;
int rc;
int nob;
+ /* Not NOOP message */
+ LASSERT (tx->tx_lnetmsg != NULL);
+
/* NB we can't trust socket ops to either consume our iovs
* or leave them alone. */
-
- if (kiov->kiov_len >= *ksocknal_tunables.ksnd_zc_min_frag &&
- tx->tx_msg.ksm_zc_req_cookie != 0) {
+ if (tx->tx_msg.ksm_zc_cookies[0] != 0) {
/* Zero copy is enabled */
+ struct sock *sk = sock->sk;
struct page *page = kiov->kiov_page;
int offset = kiov->kiov_offset;
int fragsize = kiov->kiov_len;
fragsize < tx->tx_resid)
msgflg |= MSG_MORE;
- rc = tcp_sendpage(sock, page, offset, fragsize, msgflg);
+ if (sk->sk_prot->sendpage != NULL) {
+ rc = sk->sk_prot->sendpage(sk, page,
+ offset, fragsize, msgflg);
+ } else {
+ rc = tcp_sendpage(sock, page, offset, fragsize, msgflg);
+ }
} else {
#if SOCKNAL_SINGLE_FRAG_TX || !SOCKNAL_RISK_KMAP_DEADLOCK
struct iovec scratch;
#ifdef CONFIG_HIGHMEM
#warning "XXX risk of kmap deadlock on multiple frags..."
#endif
- struct iovec *scratchiov = conn->ksnc_tx_scratch_iov;
+ struct iovec *scratchiov = conn->ksnc_scheduler->kss_scratch_iov;
unsigned int niov = tx->tx_nkiov;
#endif
struct msghdr msg = {
for (i = 0; i < niov; i++)
kunmap(kiov[i].kiov_page);
}
- return rc;
+ return rc;
}
void
struct iovec *scratchiov = &scratch;
unsigned int niov = 1;
#else
- struct iovec *scratchiov = conn->ksnc_rx_scratch_iov;
+ struct iovec *scratchiov = conn->ksnc_scheduler->kss_scratch_iov;
unsigned int niov = conn->ksnc_rx_niov;
#endif
struct iovec *iov = conn->ksnc_rx_iov;
fragnob = iov[i].iov_len;
if (fragnob > sum)
fragnob = sum;
-
- conn->ksnc_rx_csum = ksocknal_csum(conn->ksnc_rx_csum,
+
+ conn->ksnc_rx_csum = ksocknal_csum(conn->ksnc_rx_csum,
iov[i].iov_base, fragnob);
}
conn->ksnc_msg.ksm_csum = saved_csum;
}
- return rc;
+ return rc;
+}
+
+static void
+ksocknal_lib_kiov_vunmap(void *addr)
+{
+ if (addr == NULL)
+ return;
+
+ vunmap(addr);
+}
+
+static void *
+ksocknal_lib_kiov_vmap(lnet_kiov_t *kiov, int niov,
+ struct iovec *iov, struct page **pages)
+{
+ void *addr;
+ int nob;
+ int i;
+
+ if (!*ksocknal_tunables.ksnd_zc_recv || pages == NULL)
+ return NULL;
+
+ LASSERT (niov <= LNET_MAX_IOV);
+
+ if (niov < 2 ||
+ niov < *ksocknal_tunables.ksnd_zc_recv_min_nfrags)
+ return NULL;
+
+ for (nob = i = 0; i < niov; i++) {
+ if ((kiov[i].kiov_offset != 0 && i > 0) ||
+ (kiov[i].kiov_offset + kiov[i].kiov_len != CFS_PAGE_SIZE && i < niov - 1))
+ return NULL;
+
+ pages[i] = kiov[i].kiov_page;
+ nob += kiov[i].kiov_len;
+ }
+
+ addr = vmap(pages, niov, VM_MAP, PAGE_KERNEL);
+ if (addr == NULL)
+ return NULL;
+
+ iov->iov_base = addr + kiov[0].kiov_offset;
+ iov->iov_len = nob;
+
+ return addr;
}
int
ksocknal_lib_recv_kiov (ksock_conn_t *conn)
{
#if SOCKNAL_SINGLE_FRAG_RX || !SOCKNAL_RISK_KMAP_DEADLOCK
- struct iovec scratch;
- struct iovec *scratchiov = &scratch;
- unsigned int niov = 1;
+ struct iovec scratch;
+ struct iovec *scratchiov = &scratch;
+ struct page **pages = NULL;
+ unsigned int niov = 1;
#else
#ifdef CONFIG_HIGHMEM
#warning "XXX risk of kmap deadlock on multiple frags..."
#endif
- struct iovec *scratchiov = conn->ksnc_rx_scratch_iov;
- unsigned int niov = conn->ksnc_rx_nkiov;
+ struct iovec *scratchiov = conn->ksnc_scheduler->kss_scratch_iov;
+ struct page **pages = conn->ksnc_scheduler->kss_rx_scratch_pgs;
+ unsigned int niov = conn->ksnc_rx_nkiov;
#endif
lnet_kiov_t *kiov = conn->ksnc_rx_kiov;
struct msghdr msg = {
.msg_name = NULL,
.msg_namelen = 0,
.msg_iov = scratchiov,
- .msg_iovlen = niov,
.msg_control = NULL,
.msg_controllen = 0,
.msg_flags = 0
int i;
int rc;
void *base;
+ void *addr;
int sum;
int fragnob;
/* NB we can't trust socket ops to either consume our iovs
* or leave them alone. */
- for (nob = i = 0; i < niov; i++) {
- scratchiov[i].iov_base = kmap(kiov[i].kiov_page) + kiov[i].kiov_offset;
- nob += scratchiov[i].iov_len = kiov[i].kiov_len;
+ if ((addr = ksocknal_lib_kiov_vmap(kiov, niov, scratchiov, pages)) != NULL) {
+ nob = scratchiov[0].iov_len;
+ msg.msg_iovlen = 1;
+
+ } else {
+ for (nob = i = 0; i < niov; i++) {
+ nob += scratchiov[i].iov_len = kiov[i].kiov_len;
+ scratchiov[i].iov_base = kmap(kiov[i].kiov_page) +
+ kiov[i].kiov_offset;
+ }
+ msg.msg_iovlen = niov;
}
+
LASSERT (nob <= conn->ksnc_rx_nob_wanted);
set_fs (KERNEL_DS);
fragnob = kiov[i].kiov_len;
if (fragnob > sum)
fragnob = sum;
-
+
conn->ksnc_rx_csum = ksocknal_csum(conn->ksnc_rx_csum,
base, fragnob);
kunmap(kiov[i].kiov_page);
}
}
- for (i = 0; i < niov; i++)
- kunmap(kiov[i].kiov_page);
- return (rc);
+ if (addr != NULL) {
+ ksocknal_lib_kiov_vunmap(addr);
+ } else {
+ for (i = 0; i < niov; i++)
+ kunmap(kiov[i].kiov_page);
+ }
+
+ return (rc);
}
-void ksocknal_lib_csum_tx(ksock_tx_t *tx)
+void
+ksocknal_lib_csum_tx(ksock_tx_t *tx)
{
int i;
__u32 csum;
return (-ESHUTDOWN);
}
- rc = libcfs_sock_getbuf(sock, txmem, rxmem);
+ rc = libcfs_sock_getbuf(sock, txmem, rxmem);
if (rc == 0) {
len = sizeof(*nagle);
- set_fs(KERNEL_DS);
+ set_fs(KERNEL_DS);
rc = sock->ops->getsockopt(sock, SOL_TCP, TCP_NODELAY,
(char *)nagle, &len);
- set_fs(oldmm);
+ set_fs(oldmm);
}
ksocknal_connsock_decref(conn);
}
}
- rc = libcfs_sock_setbuf(sock,
+ rc = libcfs_sock_setbuf(sock,
*ksocknal_tunables.ksnd_tx_buffer_size,
*ksocknal_tunables.ksnd_rx_buffer_size);
- if (rc != 0) {
- CERROR ("Can't set buffer tx %d, rx %d buffers: %d\n",
+ if (rc != 0) {
+ CERROR ("Can't set buffer tx %d, rx %d buffers: %d\n",
*ksocknal_tunables.ksnd_tx_buffer_size,
*ksocknal_tunables.ksnd_rx_buffer_size, rc);
- return (rc);
- }
+ return (rc);
+ }
/* TCP_BACKOFF_* sockopt tunables unsupported in stock kernels */
#ifdef SOCKNAL_BACKOFF
if (*ksocknal_tunables.ksnd_backoff_init > 0) {
option = *ksocknal_tunables.ksnd_backoff_init;
+#ifdef SOCKNAL_BACKOFF_MS
+ option *= 1000;
+#endif
set_fs (KERNEL_DS);
rc = sock->ops->setsockopt (sock, SOL_TCP, TCP_BACKOFF_INIT,
if (*ksocknal_tunables.ksnd_backoff_max > 0) {
option = *ksocknal_tunables.ksnd_backoff_max;
+#ifdef SOCKNAL_BACKOFF_MS
+ option *= 1000;
+#endif
set_fs (KERNEL_DS);
rc = sock->ops->setsockopt (sock, SOL_TCP, TCP_BACKOFF_MAX,
/* interleave correctly with closing sockets... */
LASSERT(!in_irq());
- read_lock (&ksocknal_data.ksnd_global_lock);
+ cfs_read_lock (&ksocknal_data.ksnd_global_lock);
conn = sk->sk_user_data;
if (conn == NULL) { /* raced with ksocknal_terminate_conn */
LASSERT (sk->sk_data_ready != &ksocknal_data_ready);
sk->sk_data_ready (sk, n);
} else
- ksocknal_read_callback(conn);
+ ksocknal_read_callback(conn);
- read_unlock (&ksocknal_data.ksnd_global_lock);
+ cfs_read_unlock (&ksocknal_data.ksnd_global_lock);
EXIT;
}
/* interleave correctly with closing sockets... */
LASSERT(!in_irq());
- read_lock (&ksocknal_data.ksnd_global_lock);
+ cfs_read_lock (&ksocknal_data.ksnd_global_lock);
conn = sk->sk_user_data;
wspace = SOCKNAL_WSPACE(sk);
LASSERT (sk->sk_write_space != &ksocknal_write_space);
sk->sk_write_space (sk);
- read_unlock (&ksocknal_data.ksnd_global_lock);
+ cfs_read_unlock (&ksocknal_data.ksnd_global_lock);
return;
}
if (wspace >= min_wpace) { /* got enough space */
- ksocknal_write_callback(conn);
+ ksocknal_write_callback(conn);
- /* Clear SOCK_NOSPACE _after_ ksocknal_write_callback so the
- * ENOMEM check in ksocknal_transmit is race-free (think about
- * it). */
+ /* Clear SOCK_NOSPACE _after_ ksocknal_write_callback so the
+ * ENOMEM check in ksocknal_transmit is race-free (think about
+ * it). */
clear_bit (SOCK_NOSPACE, &sk->sk_socket->flags);
}
- read_unlock (&ksocknal_data.ksnd_global_lock);
+ cfs_read_unlock (&ksocknal_data.ksnd_global_lock);
}
void
ksocknal_lib_save_callback(struct socket *sock, ksock_conn_t *conn)
{
- conn->ksnc_saved_data_ready = sock->sk->sk_data_ready;
- conn->ksnc_saved_write_space = sock->sk->sk_write_space;
+ conn->ksnc_saved_data_ready = sock->sk->sk_data_ready;
+ conn->ksnc_saved_write_space = sock->sk->sk_write_space;
}
void
ksocknal_lib_set_callback(struct socket *sock, ksock_conn_t *conn)
{
- sock->sk->sk_user_data = conn;
- sock->sk->sk_data_ready = ksocknal_data_ready;
- sock->sk->sk_write_space = ksocknal_write_space;
- return;
+ sock->sk->sk_user_data = conn;
+ sock->sk->sk_data_ready = ksocknal_data_ready;
+ sock->sk->sk_write_space = ksocknal_write_space;
+ return;
}
void
ksocknal_lib_reset_callback(struct socket *sock, ksock_conn_t *conn)
{
- /* Remove conn's network callbacks.
- * NB I _have_ to restore the callback, rather than storing a noop,
- * since the socket could survive past this module being unloaded!! */
- sock->sk->sk_data_ready = conn->ksnc_saved_data_ready;
- sock->sk->sk_write_space = conn->ksnc_saved_write_space;
-
- /* A callback could be in progress already; they hold a read lock
- * on ksnd_global_lock (to serialise with me) and NOOP if
- * sk_user_data is NULL. */
- sock->sk->sk_user_data = NULL;
-
- return ;
+ /* Remove conn's network callbacks.
+ * NB I _have_ to restore the callback, rather than storing a noop,
+ * since the socket could survive past this module being unloaded!! */
+ sock->sk->sk_data_ready = conn->ksnc_saved_data_ready;
+ sock->sk->sk_write_space = conn->ksnc_saved_write_space;
+
+ /* A callback could be in progress already; they hold a read lock
+ * on ksnd_global_lock (to serialise with me) and NOOP if
+ * sk_user_data is NULL. */
+ sock->sk->sk_user_data = NULL;
+
+ return ;
+}
+
+int
+ksocknal_lib_memory_pressure(ksock_conn_t *conn)
+{
+ int rc = 0;
+ ksock_sched_t *sched;
+
+ sched = conn->ksnc_scheduler;
+ cfs_spin_lock_bh (&sched->kss_lock);
+
+ if (!SOCK_TEST_NOSPACE(conn->ksnc_sock) &&
+ !conn->ksnc_tx_ready) {
+ /* SOCK_NOSPACE is set when the socket fills
+ * and cleared in the write_space callback
+ * (which also sets ksnc_tx_ready). If
+ * SOCK_NOSPACE and ksnc_tx_ready are BOTH
+ * zero, I didn't fill the socket and
+ * write_space won't reschedule me, so I
+ * return -ENOMEM to get my caller to retry
+ * after a timeout */
+ rc = -ENOMEM;
+ }
+
+ cfs_spin_unlock_bh (&sched->kss_lock);
+
+ return rc;
}
+__u64
+ksocknal_lib_new_incarnation(void)
+{
+ struct timeval tv;
+
+ /* The incarnation number is the time this module loaded and it
+ * identifies this particular instance of the socknal. Hopefully
+ * we won't be able to reboot more frequently than 1MHz for the
+ * forseeable future :) */
+
+ do_gettimeofday(&tv);
+
+ return (((__u64)tv.tv_sec) * 1000000) + tv.tv_usec;
+}
+
+int
+ksocknal_lib_bind_thread_to_cpu(int id)
+{
+#if defined(CONFIG_SMP) && defined(CPU_AFFINITY)
+ id = ksocknal_sched2cpu(id);
+ if (cpu_online(id)) {
+ cpumask_t m = CPU_MASK_NONE;
+ cpu_set(id, m);
+ set_cpus_allowed(current, m);
+ return 0;
+ }
+
+ return -1;
+
+#else
+ return 0;
+#endif
+}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff