-#include "socknal.h"
-
-#ifdef CONFIG_SYSCTL
-#define SOCKNAL_SYSCTL 200
-
-#define SOCKNAL_SYSCTL_TIMEOUT 1
-#define SOCKNAL_SYSCTL_EAGER_ACK 2
-#define SOCKNAL_SYSCTL_ZERO_COPY 3
-#define SOCKNAL_SYSCTL_TYPED 4
-#define SOCKNAL_SYSCTL_MIN_BULK 5
-#define SOCKNAL_SYSCTL_BUFFER_SIZE 6
-#define SOCKNAL_SYSCTL_NAGLE 7
-#define SOCKNAL_SYSCTL_IRQ_AFFINITY 8
-#define SOCKNAL_SYSCTL_KEEPALIVE_IDLE 9
-#define SOCKNAL_SYSCTL_KEEPALIVE_COUNT 10
-#define SOCKNAL_SYSCTL_KEEPALIVE_INTVL 11
-
-static ctl_table ksocknal_ctl_table[] = {
- {SOCKNAL_SYSCTL_TIMEOUT, "timeout",
- &ksocknal_tunables.ksnd_io_timeout, sizeof (int),
- 0644, NULL, &proc_dointvec},
- {SOCKNAL_SYSCTL_EAGER_ACK, "eager_ack",
- &ksocknal_tunables.ksnd_eager_ack, sizeof (int),
- 0644, NULL, &proc_dointvec},
-#if SOCKNAL_ZC
- {SOCKNAL_SYSCTL_ZERO_COPY, "zero_copy",
- &ksocknal_tunables.ksnd_zc_min_frag, sizeof (int),
- 0644, NULL, &proc_dointvec},
+/*
+ * 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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2012, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ */
+
+#include "socklnd.h"
+
+# if defined(CONFIG_SYSCTL) && !CFS_SYSFS_MODULE_PARM
+
+#ifndef HAVE_SYSCTL_UNNUMBERED
+
+enum {
+ SOCKLND_TIMEOUT = 1,
+ SOCKLND_CREDITS,
+ SOCKLND_PEER_TXCREDITS,
+ SOCKLND_PEER_RTRCREDITS,
+ SOCKLND_PEER_TIMEOUT,
+ 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_TXCREDITS CTL_UNNUMBERED
+#define SOCKLND_PEER_RTRCREDITS CTL_UNNUMBERED
+#define SOCKLND_PEER_TIMEOUT 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
- {SOCKNAL_SYSCTL_TYPED, "typed",
- &ksocknal_tunables.ksnd_typed_conns, sizeof (int),
- 0644, NULL, &proc_dointvec},
- {SOCKNAL_SYSCTL_MIN_BULK, "min_bulk",
- &ksocknal_tunables.ksnd_min_bulk, sizeof (int),
- 0644, NULL, &proc_dointvec},
- {SOCKNAL_SYSCTL_BUFFER_SIZE, "buffer_size",
- &ksocknal_tunables.ksnd_buffer_size, sizeof(int),
- 0644, NULL, &proc_dointvec},
- {SOCKNAL_SYSCTL_NAGLE, "nagle",
- &ksocknal_tunables.ksnd_nagle, sizeof(int),
- 0644, NULL, &proc_dointvec},
-#if CPU_AFFINITY
- {SOCKNAL_SYSCTL_IRQ_AFFINITY, "irq_affinity",
- &ksocknal_tunables.ksnd_irq_affinity, sizeof(int),
- 0644, NULL, &proc_dointvec},
+
+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_TXCREDITS,
+ .procname = "peer_credits",
+ .data = &ksocknal_tunables.ksnd_peertxcredits,
+ .maxlen = sizeof (int),
+ .mode = 0444,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ },
+ {
+ .ctl_name = SOCKLND_PEER_RTRCREDITS,
+ .procname = "peer_buffer_credits",
+ .data = &ksocknal_tunables.ksnd_peerrtrcredits,
+ .maxlen = sizeof (int),
+ .mode = 0444,
+ .proc_handler = &proc_dointvec,
+ .strategy = &sysctl_intvec,
+ },
+ {
+ .ctl_name = SOCKLND_PEER_TIMEOUT,
+ .procname = "peer_timeout",
+ .data = &ksocknal_tunables.ksnd_peertimeout,
+ .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_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
- {SOCKNAL_SYSCTL_KEEPALIVE_IDLE, "keepalive_idle",
- &ksocknal_tunables.ksnd_keepalive_idle, sizeof(int),
- 0644, NULL, &proc_dointvec},
- {SOCKNAL_SYSCTL_KEEPALIVE_COUNT, "keepalive_count",
- &ksocknal_tunables.ksnd_keepalive_count, sizeof(int),
- 0644, NULL, &proc_dointvec},
- {SOCKNAL_SYSCTL_KEEPALIVE_INTVL, "keepalive_intvl",
- &ksocknal_tunables.ksnd_keepalive_intvl, sizeof(int),
- 0644, NULL, &proc_dointvec},
- { 0 }
+ {
+ .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}
};
-ctl_table ksocknal_top_ctl_table[] = {
- {SOCKNAL_SYSCTL, "socknal", NULL, 0, 0555, ksocknal_ctl_table},
+
+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 }
};
-#endif
-void
-ksocknal_lib_bind_irq (unsigned int irq)
+int
+ksocknal_lib_tunables_init ()
{
-#if (defined(CONFIG_SMP) && CPU_AFFINITY)
- int bind;
- int cpu;
- unsigned long flags;
- char cmdline[64];
- ksock_irqinfo_t *info;
- char *argv[] = {"/bin/sh",
- "-c",
- cmdline,
- NULL};
- char *envp[] = {"HOME=/",
- "PATH=/sbin:/bin:/usr/sbin:/usr/bin",
- NULL};
-
- LASSERT (irq < NR_IRQS);
- if (irq == 0) /* software NIC or affinity disabled */
- return;
-
- info = &ksocknal_data.ksnd_irqinfo[irq];
-
- write_lock_irqsave (&ksocknal_data.ksnd_global_lock, flags);
-
- LASSERT (info->ksni_valid);
- bind = !info->ksni_bound;
- info->ksni_bound = 1;
+ 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;
+ }
+ }
- write_unlock_irqrestore (&ksocknal_data.ksnd_global_lock, flags);
+ 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;
- if (!bind) /* bound already */
- return;
+ ksocknal_tunables.ksnd_sysctl =
+ cfs_register_sysctl_table(ksocknal_top_ctl_table, 0);
- cpu = ksocknal_irqsched2cpu(info->ksni_sched);
- snprintf (cmdline, sizeof (cmdline),
- "echo %d > /proc/irq/%u/smp_affinity", 1 << cpu, irq);
+ if (ksocknal_tunables.ksnd_sysctl == NULL)
+ CWARN("Can't setup /proc tunables\n");
- printk (KERN_INFO "Lustre: Binding irq %u to CPU %d with cmd: %s\n",
- irq, cpu, cmdline);
+ return 0;
+}
- /* FIXME: Find a better method of setting IRQ affinity...
- */
+void
+ksocknal_lib_tunables_fini ()
+{
+ if (ksocknal_tunables.ksnd_sysctl != NULL)
+ cfs_unregister_sysctl_table(ksocknal_tunables.ksnd_sysctl);
+}
+#else
+int
+ksocknal_lib_tunables_init ()
+{
+ return 0;
+}
- USERMODEHELPER(argv[0], argv, envp);
-#endif
+void
+ksocknal_lib_tunables_fini ()
+{
}
+#endif /* # if CONFIG_SYSCTL && !CFS_SYSFS_MODULE_PARM */
int
ksocknal_lib_get_conn_addrs (ksock_conn_t *conn)
{
- struct sockaddr_in sin;
- int len = sizeof (sin);
- int rc;
+ int rc = libcfs_sock_getaddr(conn->ksnc_sock, 1,
+ &conn->ksnc_ipaddr,
+ &conn->ksnc_port);
- rc = conn->ksnc_sock->ops->getname (conn->ksnc_sock,
- (struct sockaddr *)&sin, &len, 2);
/* Didn't need the {get,put}connsock dance to deref ksnc_sock... */
LASSERT (!conn->ksnc_closing);
return rc;
}
- conn->ksnc_ipaddr = ntohl (sin.sin_addr.s_addr);
- conn->ksnc_port = ntohs (sin.sin_port);
-
- rc = conn->ksnc_sock->ops->getname (conn->ksnc_sock,
- (struct sockaddr *)&sin, &len, 0);
+ rc = libcfs_sock_getaddr(conn->ksnc_sock, 0,
+ &conn->ksnc_myipaddr, NULL);
if (rc != 0) {
CERROR ("Error %d getting sock local IP\n", rc);
return rc;
}
- conn->ksnc_myipaddr = ntohl (sin.sin_addr.s_addr);
-
return 0;
}
-unsigned int
-ksocknal_lib_sock_irq (struct socket *sock)
-{
- int irq = 0;
- struct dst_entry *dst;
-
- if (!ksocknal_tunables.ksnd_irq_affinity)
- return 0;
-
- dst = sk_dst_get (sock->sk);
- if (dst != NULL) {
- if (dst->dev != NULL) {
- irq = dst->dev->irq;
- if (irq >= NR_IRQS) {
- CERROR ("Unexpected IRQ %x\n", irq);
- irq = 0;
- }
- }
- dst_release (dst);
- }
-
- return (irq);
-}
-
-#if (SOCKNAL_ZC && SOCKNAL_VADDR_ZC)
-static struct page *
-ksocknal_kvaddr_to_page (unsigned long vaddr)
+int
+ksocknal_lib_zc_capable(ksock_conn_t *conn)
{
- struct page *page;
-
- if (vaddr >= VMALLOC_START &&
- vaddr < VMALLOC_END)
- page = vmalloc_to_page ((void *)vaddr);
-#if CONFIG_HIGHMEM
- else if (vaddr >= PKMAP_BASE &&
- vaddr < (PKMAP_BASE + LAST_PKMAP * PAGE_SIZE))
- page = vmalloc_to_page ((void *)vaddr);
- /* in 2.4 ^ just walks the page tables */
-#endif
- else
- page = virt_to_page (vaddr);
+ int caps = conn->ksnc_sock->sk->sk_route_caps;
- if (page == NULL ||
- !VALID_PAGE (page))
- return (NULL);
+ if (conn->ksnc_proto == &ksocknal_protocol_v1x)
+ return 0;
- return (page);
+ /* ZC if the socket supports scatter/gather and doesn't need software
+ * checksums */
+ return ((caps & NETIF_F_SG) != 0 && (caps & NETIF_F_ALL_CSUM) != 0);
}
-#endif
int
ksocknal_lib_send_iov (ksock_conn_t *conn, ksock_tx_t *tx)
{
struct socket *sock = conn->ksnc_sock;
-#if (SOCKNAL_ZC && SOCKNAL_VADDR_ZC)
- unsigned long vaddr = (unsigned long)iov->iov_base
- int offset = vaddr & (PAGE_SIZE - 1);
- int zcsize = MIN (iov->iov_len, PAGE_SIZE - offset);
- struct page *page;
-#endif
int nob;
int rc;
+ if (*ksocknal_tunables.ksnd_enable_csum && /* checksum enabled */
+ conn->ksnc_proto == &ksocknal_protocol_v2x && /* V2.x connection */
+ tx->tx_nob == tx->tx_resid && /* frist sending */
+ tx->tx_msg.ksm_csum == 0) /* not checksummed */
+ ksocknal_lib_csum_tx(tx);
+
/* NB we can't trust socket ops to either consume our iovs
* or leave them alone. */
-#if (SOCKNAL_ZC && SOCKNAL_VADDR_ZC)
- if (zcsize >= ksocknal_data.ksnd_zc_min_frag &&
- (sock->sk->route_caps & NETIF_F_SG) &&
- (sock->sk->route_caps & (NETIF_F_IP_CSUM | NETIF_F_NO_CSUM | NETIF_F_HW_CSUM)) &&
- (page = ksocknal_kvaddr_to_page (vaddr)) != NULL) {
- int msgflg = MSG_DONTWAIT;
-
- CDEBUG(D_NET, "vaddr %p, page %p->%p + offset %x for %d\n",
- (void *)vaddr, page, page_address(page), offset, zcsize);
-
- if (!list_empty (&conn->ksnc_tx_queue) ||
- zcsize < tx->tx_resid)
- msgflg |= MSG_MORE;
-
- rc = tcp_sendpage_zccd(sock, page, offset, zcsize, msgflg, &tx->tx_zccd);
- } else
-#endif
{
#if SOCKNAL_SINGLE_FRAG_TX
struct iovec scratch;
struct iovec *scratchiov = &scratch;
- int niov = 1;
+ unsigned int niov = 1;
#else
- struct iovec *scratchiov = conn->ksnc_tx_scratch_iov;
- int niov = tx->tx_niov;
+ struct iovec *scratchiov = conn->ksnc_scheduler->kss_scratch_iov;
+ unsigned int niov = tx->tx_niov;
#endif
struct msghdr msg = {
.msg_name = NULL,
nob += scratchiov[i].iov_len;
}
- if (!list_empty(&conn->ksnc_tx_queue) ||
+ if (!cfs_list_empty(&conn->ksnc_tx_queue) ||
nob < tx->tx_resid)
msg.msg_flags |= MSG_MORE;
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;
- ptl_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 SOCKNAL_ZC
- if (kiov->kiov_len >= ksocknal_tunables.ksnd_zc_min_frag &&
- (sock->sk->route_caps & NETIF_F_SG) &&
- (sock->sk->route_caps & (NETIF_F_IP_CSUM | NETIF_F_NO_CSUM | NETIF_F_HW_CSUM))) {
+ 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;
CDEBUG(D_NET, "page %p + offset %x for %d\n",
page, offset, kiov->kiov_len);
- if (!list_empty(&conn->ksnc_tx_queue) ||
+ if (!cfs_list_empty(&conn->ksnc_tx_queue) ||
fragsize < tx->tx_resid)
msgflg |= MSG_MORE;
- rc = tcp_sendpage_zccd(sock, page, offset, fragsize, msgflg,
- &tx->tx_zccd);
- } else
-#endif
- {
+ if (sk->sk_prot->sendpage != NULL) {
+ rc = sk->sk_prot->sendpage(sk, page,
+ offset, fragsize, msgflg);
+ } else {
+ rc = cfs_tcp_sendpage(sk, page, offset, fragsize,
+ msgflg);
+ }
+ } else {
#if SOCKNAL_SINGLE_FRAG_TX || !SOCKNAL_RISK_KMAP_DEADLOCK
struct iovec scratch;
struct iovec *scratchiov = &scratch;
- int niov = 1;
+ unsigned int niov = 1;
#else
#ifdef CONFIG_HIGHMEM
#warning "XXX risk of kmap deadlock on multiple frags..."
#endif
- struct iovec *scratchiov = conn->ksnc_tx_scratch_iov;
- int niov = tx->tx_nkiov;
+ struct iovec *scratchiov = conn->ksnc_scheduler->kss_scratch_iov;
+ unsigned int niov = tx->tx_nkiov;
#endif
struct msghdr msg = {
.msg_name = NULL,
nob += scratchiov[i].iov_len = kiov[i].kiov_len;
}
- if (!list_empty(&conn->ksnc_tx_queue) ||
+ if (!cfs_list_empty(&conn->ksnc_tx_queue) ||
nob < tx->tx_resid)
- msg.msg_flags |= MSG_DONTWAIT;
+ msg.msg_flags |= MSG_MORE;
set_fs (KERNEL_DS);
rc = sock_sendmsg(sock, &msg, nob);
for (i = 0; i < niov; i++)
kunmap(kiov[i].kiov_page);
}
- return rc;
+ return rc;
}
void
#if SOCKNAL_SINGLE_FRAG_RX
struct iovec scratch;
struct iovec *scratchiov = &scratch;
- int niov = 1;
+ unsigned int niov = 1;
#else
- struct iovec *scratchiov = conn->ksnc_rx_scratch_iov;
- int niov = conn->ksnc_rx_niov;
+ struct iovec *scratchiov = conn->ksnc_scheduler->kss_scratch_iov;
+ unsigned int niov = conn->ksnc_rx_niov;
#endif
struct iovec *iov = conn->ksnc_rx_iov;
struct msghdr msg = {
int nob;
int i;
int rc;
+ int fragnob;
+ int sum;
+ __u32 saved_csum;
/* NB we can't trust socket ops to either consume our iovs
* or leave them alone. */
/* NB this is just a boolean..........................^ */
set_fs (oldmm);
- return rc;
+ saved_csum = 0;
+ if (conn->ksnc_proto == &ksocknal_protocol_v2x) {
+ saved_csum = conn->ksnc_msg.ksm_csum;
+ conn->ksnc_msg.ksm_csum = 0;
+ }
+
+ if (saved_csum != 0) {
+ /* accumulate checksum */
+ for (i = 0, sum = rc; sum > 0; i++, sum -= fragnob) {
+ LASSERT (i < niov);
+
+ fragnob = iov[i].iov_len;
+ if (fragnob > sum)
+ fragnob = sum;
+
+ conn->ksnc_rx_csum = ksocknal_csum(conn->ksnc_rx_csum,
+ iov[i].iov_base, fragnob);
+ }
+ conn->ksnc_msg.ksm_csum = saved_csum;
+ }
+
+ 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 !=
+ PAGE_CACHE_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;
- 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;
- 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
- ptl_kiov_t *kiov = conn->ksnc_rx_kiov;
+ 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 nob;
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);
/* NB this is just a boolean.......................^ */
set_fs (oldmm);
- for (i = 0; i < niov; i++)
- kunmap(kiov[i].kiov_page);
+ if (conn->ksnc_msg.ksm_csum != 0) {
+ for (i = 0, sum = rc; sum > 0; i++, sum -= fragnob) {
+ LASSERT (i < niov);
- return (rc);
-}
+ /* Dang! have to kmap again because I have nowhere to stash the
+ * mapped address. But by doing it while the page is still
+ * mapped, the kernel just bumps the map count and returns me
+ * the address it stashed. */
+ base = kmap(kiov[i].kiov_page) + kiov[i].kiov_offset;
+ fragnob = kiov[i].kiov_len;
+ if (fragnob > sum)
+ fragnob = sum;
-int
-ksocknal_lib_sock_write (struct socket *sock, void *buffer, int nob)
-{
- int rc;
- mm_segment_t oldmm = get_fs();
+ conn->ksnc_rx_csum = ksocknal_csum(conn->ksnc_rx_csum,
+ base, fragnob);
- while (nob > 0) {
- struct iovec iov = {
- .iov_base = buffer,
- .iov_len = nob
- };
- struct msghdr msg = {
- .msg_name = NULL,
- .msg_namelen = 0,
- .msg_iov = &iov,
- .msg_iovlen = 1,
- .msg_control = NULL,
- .msg_controllen = 0,
- .msg_flags = 0
- };
-
- set_fs (KERNEL_DS);
- rc = sock_sendmsg (sock, &msg, iov.iov_len);
- set_fs (oldmm);
-
- if (rc < 0)
- return (rc);
-
- if (rc == 0) {
- CERROR ("Unexpected zero rc\n");
- return (-ECONNABORTED);
+ kunmap(kiov[i].kiov_page);
}
+ }
- buffer = ((char *)buffer) + rc;
- nob -= rc;
+ if (addr != NULL) {
+ ksocknal_lib_kiov_vunmap(addr);
+ } else {
+ for (i = 0; i < niov; i++)
+ kunmap(kiov[i].kiov_page);
}
- return (0);
+ return (rc);
}
-int
-ksocknal_lib_sock_read (struct socket *sock, void *buffer, int nob)
+void
+ksocknal_lib_csum_tx(ksock_tx_t *tx)
{
- int rc;
- mm_segment_t oldmm = get_fs();
+ int i;
+ __u32 csum;
+ void *base;
- while (nob > 0) {
- struct iovec iov = {
- .iov_base = buffer,
- .iov_len = nob
- };
- struct msghdr msg = {
- .msg_name = NULL,
- .msg_namelen = 0,
- .msg_iov = &iov,
- .msg_iovlen = 1,
- .msg_control = NULL,
- .msg_controllen = 0,
- .msg_flags = 0
- };
+ LASSERT(tx->tx_iov[0].iov_base == (void *)&tx->tx_msg);
+ LASSERT(tx->tx_conn != NULL);
+ LASSERT(tx->tx_conn->ksnc_proto == &ksocknal_protocol_v2x);
- set_fs (KERNEL_DS);
- rc = sock_recvmsg (sock, &msg, iov.iov_len, 0);
- set_fs (oldmm);
+ tx->tx_msg.ksm_csum = 0;
- if (rc < 0)
- return (rc);
+ csum = ksocknal_csum(~0, (void *)tx->tx_iov[0].iov_base,
+ tx->tx_iov[0].iov_len);
- if (rc == 0)
- return (-ECONNABORTED);
+ if (tx->tx_kiov != NULL) {
+ for (i = 0; i < tx->tx_nkiov; i++) {
+ base = kmap(tx->tx_kiov[i].kiov_page) +
+ tx->tx_kiov[i].kiov_offset;
- buffer = ((char *)buffer) + rc;
- nob -= rc;
+ csum = ksocknal_csum(csum, base, tx->tx_kiov[i].kiov_len);
+
+ kunmap(tx->tx_kiov[i].kiov_page);
+ }
+ } else {
+ for (i = 1; i < tx->tx_niov; i++)
+ csum = ksocknal_csum(csum, tx->tx_iov[i].iov_base,
+ tx->tx_iov[i].iov_len);
}
- return (0);
+ if (*ksocknal_tunables.ksnd_inject_csum_error) {
+ csum++;
+ *ksocknal_tunables.ksnd_inject_csum_error = 0;
+ }
+
+ tx->tx_msg.ksm_csum = csum;
}
int
int len;
int rc;
- rc = ksocknal_getconnsock (conn);
+ rc = ksocknal_connsock_addref(conn);
if (rc != 0) {
LASSERT (conn->ksnc_closing);
*txmem = *rxmem = *nagle = 0;
return (-ESHUTDOWN);
}
- set_fs (KERNEL_DS);
-
- len = sizeof(*txmem);
- rc = sock_getsockopt(sock, SOL_SOCKET, SO_SNDBUF,
- (char *)txmem, &len);
- if (rc == 0) {
- len = sizeof(*rxmem);
- rc = sock_getsockopt(sock, SOL_SOCKET, SO_RCVBUF,
- (char *)rxmem, &len);
- }
+ rc = libcfs_sock_getbuf(sock, txmem, rxmem);
if (rc == 0) {
len = sizeof(*nagle);
+ set_fs(KERNEL_DS);
rc = sock->ops->getsockopt(sock, SOL_TCP, TCP_NODELAY,
(char *)nagle, &len);
+ set_fs(oldmm);
}
- set_fs (oldmm);
- ksocknal_putconnsock (conn);
+ ksocknal_connsock_decref(conn);
if (rc == 0)
*nagle = !*nagle;
return (rc);
}
- if (!ksocknal_tunables.ksnd_nagle) {
+ if (!*ksocknal_tunables.ksnd_nagle) {
option = 1;
set_fs (KERNEL_DS);
}
}
- if (ksocknal_tunables.ksnd_buffer_size > 0) {
- option = ksocknal_tunables.ksnd_buffer_size;
+ 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",
+ *ksocknal_tunables.ksnd_tx_buffer_size,
+ *ksocknal_tunables.ksnd_rx_buffer_size, 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_setsockopt (sock, SOL_SOCKET, SO_SNDBUF,
- (char *)&option, sizeof (option));
+ rc = sock->ops->setsockopt (sock, SOL_TCP, TCP_BACKOFF_INIT,
+ (char *)&option, sizeof (option));
set_fs (oldmm);
if (rc != 0) {
- CERROR ("Can't set send buffer %d: %d\n",
+ CERROR ("Can't set initial tcp backoff %d: %d\n",
option, rc);
return (rc);
}
+ }
+
+ 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_setsockopt (sock, SOL_SOCKET, SO_RCVBUF,
- (char *)&option, sizeof (option));
+ rc = sock->ops->setsockopt (sock, SOL_TCP, TCP_BACKOFF_MAX,
+ (char *)&option, sizeof (option));
set_fs (oldmm);
if (rc != 0) {
- CERROR ("Can't set receive buffer %d: %d\n",
+ CERROR ("Can't set maximum tcp backoff %d: %d\n",
option, rc);
return (rc);
}
}
+#endif
/* snapshot tunables */
- keep_idle = ksocknal_tunables.ksnd_keepalive_idle;
- keep_count = ksocknal_tunables.ksnd_keepalive_count;
- keep_intvl = ksocknal_tunables.ksnd_keepalive_intvl;
+ keep_idle = *ksocknal_tunables.ksnd_keepalive_idle;
+ keep_count = *ksocknal_tunables.ksnd_keepalive_count;
+ keep_intvl = *ksocknal_tunables.ksnd_keepalive_intvl;
do_keepalive = (keep_idle > 0 && keep_count > 0 && keep_intvl > 0);
return (0);
}
-int
-ksocknal_lib_connect_sock(struct socket **sockp, int *may_retry,
- ksock_route_t *route, int local_port)
-{
- struct sockaddr_in locaddr;
- struct sockaddr_in srvaddr;
- struct socket *sock;
- int rc;
- int option;
- mm_segment_t oldmm = get_fs();
- struct timeval tv;
-
- memset(&locaddr, 0, sizeof(locaddr));
- locaddr.sin_family = AF_INET;
- locaddr.sin_port = htons(local_port);
- locaddr.sin_addr.s_addr =
- (route->ksnr_myipaddr != 0) ? htonl(route->ksnr_myipaddr)
- : INADDR_ANY;
-
- memset (&srvaddr, 0, sizeof (srvaddr));
- srvaddr.sin_family = AF_INET;
- srvaddr.sin_port = htons (route->ksnr_port);
- srvaddr.sin_addr.s_addr = htonl (route->ksnr_ipaddr);
-
- *may_retry = 0;
-
- rc = sock_create (PF_INET, SOCK_STREAM, 0, &sock);
- *sockp = sock;
- if (rc != 0) {
- CERROR ("Can't create autoconnect socket: %d\n", rc);
- return (rc);
- }
-
- /* Ugh; have to map_fd for compatibility with sockets passed in
- * from userspace. And we actually need the sock->file refcounting
- * that this gives you :) */
-
- rc = sock_map_fd (sock);
- if (rc < 0) {
- sock_release (sock);
- CERROR ("sock_map_fd error %d\n", rc);
- return (rc);
- }
-
- /* NB the file descriptor (rc) now owns the ref on sock->file */
- LASSERT (sock->file != NULL);
- LASSERT (file_count(sock->file) == 1);
-
- get_file(sock->file); /* extra ref makes sock->file */
- sys_close(rc); /* survive this close */
-
- /* Still got a single ref on sock->file */
- LASSERT (file_count(sock->file) == 1);
-
- /* Set the socket timeouts, so our connection attempt completes in
- * finite time */
- tv.tv_sec = ksocknal_tunables.ksnd_io_timeout;
- tv.tv_usec = 0;
-
- set_fs (KERNEL_DS);
- rc = sock_setsockopt (sock, SOL_SOCKET, SO_SNDTIMEO,
- (char *)&tv, sizeof (tv));
- set_fs (oldmm);
- if (rc != 0) {
- CERROR ("Can't set send timeout %d: %d\n",
- ksocknal_tunables.ksnd_io_timeout, rc);
- goto failed;
- }
-
- set_fs (KERNEL_DS);
- rc = sock_setsockopt (sock, SOL_SOCKET, SO_RCVTIMEO,
- (char *)&tv, sizeof (tv));
- set_fs (oldmm);
- if (rc != 0) {
- CERROR ("Can't set receive timeout %d: %d\n",
- ksocknal_tunables.ksnd_io_timeout, rc);
- goto failed;
- }
-
- set_fs (KERNEL_DS);
- option = 1;
- rc = sock_setsockopt(sock, SOL_SOCKET, SO_REUSEADDR,
- (char *)&option, sizeof (option));
- set_fs (oldmm);
- if (rc != 0) {
- CERROR("Can't set SO_REUSEADDR for socket: %d\n", rc);
- goto failed;
- }
-
- rc = sock->ops->bind(sock,
- (struct sockaddr *)&locaddr, sizeof(locaddr));
- if (rc == -EADDRINUSE) {
- CDEBUG(D_NET, "Port %d already in use\n", local_port);
- *may_retry = 1;
- goto failed;
- }
- if (rc != 0) {
- CERROR("Error trying to bind to reserved port %d: %d\n",
- local_port, rc);
- goto failed;
- }
-
- rc = sock->ops->connect(sock,
- (struct sockaddr *)&srvaddr, sizeof(srvaddr),
- sock->file->f_flags);
- if (rc == 0)
- return 0;
-
- /* EADDRNOTAVAIL probably means we're already connected to the same
- * peer/port on the same local port on a differently typed
- * connection. Let our caller retry with a different local
- * port... */
- *may_retry = (rc == -EADDRNOTAVAIL);
-
- CDEBUG(*may_retry ? D_NET : D_ERROR,
- "Error %d connecting %u.%u.%u.%u/%d -> %u.%u.%u.%u/%d\n", rc,
- HIPQUAD(route->ksnr_myipaddr), local_port,
- HIPQUAD(route->ksnr_ipaddr), route->ksnr_port);
-
- failed:
- fput(sock->file);
- return rc;
-}
-
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
-struct tcp_opt *sock2tcp_opt(struct sock *sk)
-{
- return &(sk->tp_pinfo.af_tcp);
-}
-#else
-struct tcp_opt *sock2tcp_opt(struct sock *sk)
-{
- struct tcp_sock *s = (struct tcp_sock *)sk;
- return &s->tcp;
-}
-#endif
-
void
ksocknal_lib_push_conn (ksock_conn_t *conn)
{
struct sock *sk;
- struct tcp_opt *tp;
+ struct tcp_sock *tp;
int nonagle;
int val = 1;
int rc;
mm_segment_t oldmm;
- rc = ksocknal_getconnsock (conn);
+ rc = ksocknal_connsock_addref(conn);
if (rc != 0) /* being shut down */
return;
- sk = conn->ksnc_sock->sk;
- tp = sock2tcp_opt(sk);
+ sk = conn->ksnc_sock->sk;
+ tp = tcp_sk(sk);
lock_sock (sk);
nonagle = tp->nonagle;
tp->nonagle = nonagle;
release_sock (sk);
- ksocknal_putconnsock (conn);
+ ksocknal_connsock_decref(conn);
}
extern void ksocknal_read_callback (ksock_conn_t *conn);
ENTRY;
/* interleave correctly with closing sockets... */
- read_lock (&ksocknal_data.ksnd_global_lock);
+ LASSERT(!in_irq());
+ 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);
+ read_unlock(&ksocknal_data.ksnd_global_lock);
EXIT;
}
ksocknal_write_space (struct sock *sk)
{
ksock_conn_t *conn;
+ int wspace;
+ int min_wpace;
/* interleave correctly with closing sockets... */
- read_lock (&ksocknal_data.ksnd_global_lock);
+ LASSERT(!in_irq());
+ read_lock(&ksocknal_data.ksnd_global_lock);
conn = sk->sk_user_data;
+ wspace = SOCKNAL_WSPACE(sk);
+ min_wpace = SOCKNAL_MIN_WSPACE(sk);
CDEBUG(D_NET, "sk %p wspace %d low water %d conn %p%s%s%s\n",
- sk, tcp_wspace(sk), SOCKNAL_TX_LOW_WATER(sk), conn,
+ sk, wspace, min_wpace, conn,
(conn == NULL) ? "" : (conn->ksnc_tx_ready ?
" ready" : " blocked"),
(conn == NULL) ? "" : (conn->ksnc_tx_scheduled ?
" scheduled" : " idle"),
- (conn == NULL) ? "" : (list_empty (&conn->ksnc_tx_queue) ?
+ (conn == NULL) ? "" : (cfs_list_empty (&conn->ksnc_tx_queue) ?
" empty" : " queued"));
if (conn == NULL) { /* raced with ksocknal_terminate_conn */
LASSERT (sk->sk_write_space != &ksocknal_write_space);
sk->sk_write_space (sk);
- read_unlock (&ksocknal_data.ksnd_global_lock);
+ read_unlock(&ksocknal_data.ksnd_global_lock);
return;
}
- if (tcp_wspace(sk) >= SOCKNAL_TX_LOW_WATER(sk)) { /* got enough space */
- ksocknal_write_callback(conn);
+ if (wspace >= min_wpace) { /* got enough space */
+ 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);
+ 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_act_callback(struct socket *sock, ksock_conn_t *conn)
+ksocknal_lib_reset_callback(struct socket *sock, ksock_conn_t *conn)
{
- ksocknal_data_ready (sock->sk, 0);
- ksocknal_write_space (sock->sk);
- 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 ;
}
-void
-ksocknal_lib_reset_callback(struct socket *sock, ksock_conn_t *conn)
+int
+ksocknal_lib_memory_pressure(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 ;
-}
+ int rc = 0;
+ ksock_sched_t *sched;
+
+ sched = conn->ksnc_scheduler;
+ 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;
+ }
+ spin_unlock_bh(&sched->kss_lock);
+
+ return rc;
+}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff