X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lnet%2Fklnds%2Fsocklnd%2Fsocklnd_lib-linux.c;h=6ce7d030f2283c48ede6185a522f6d35373eeb76;hb=d3ddf79a6674cc127d41c6b434c97d461afee9be;hp=d4f0502b3c03cc868ed7024e6dfcca3de74a05a2;hpb=b7a127bda5f16d289af9043b5c74a5dbe966f61a;p=fs%2Flustre-release.git diff --git a/lnet/klnds/socklnd/socklnd_lib-linux.c b/lnet/klnds/socklnd/socklnd_lib-linux.c index d4f0502..6ce7d03 100644 --- a/lnet/klnds/socklnd/socklnd_lib-linux.c +++ b/lnet/klnds/socklnd/socklnd_lib-linux.c @@ -1,15 +1,330 @@ /* -*- 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 cfs_sysctl_table_t 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_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 = 200, + .ctl_name = CTL_SOCKLND, .procname = "socknal", .data = NULL, .maxlen = 0, @@ -22,187 +337,22 @@ cfs_sysctl_table_t ksocknal_top_ctl_table[] = { int ksocknal_lib_tunables_init () { - int i = 0; - int j = 1; - - ksocknal_ctl_table[i++] = (cfs_sysctl_table_t) - { - .ctl_name = j++, - .procname = "timeout", - .data = ksocknal_tunables.ksnd_timeout, - .maxlen = sizeof (int), - .mode = 0644, - .proc_handler = &proc_dointvec - }; - ksocknal_ctl_table[i++] = (cfs_sysctl_table_t) - { - .ctl_name = j++, - .procname = "credits", - .data = ksocknal_tunables.ksnd_credits, - .maxlen = sizeof (int), - .mode = 0444, - .proc_handler = &proc_dointvec - }; - ksocknal_ctl_table[i++] = (cfs_sysctl_table_t) - { - .ctl_name = j++, - .procname = "peer_credits", - .data = ksocknal_tunables.ksnd_peercredits, - .maxlen = sizeof (int), - .mode = 0444, - .proc_handler = &proc_dointvec - }; - ksocknal_ctl_table[i++] = (cfs_sysctl_table_t) - { - .ctl_name = j++, - .procname = "nconnds", - .data = ksocknal_tunables.ksnd_nconnds, - .maxlen = sizeof (int), - .mode = 0444, - .proc_handler = &proc_dointvec - }; - ksocknal_ctl_table[i++] = (cfs_sysctl_table_t) - { - .ctl_name = j++, - .procname = "min_reconnectms", - .data = ksocknal_tunables.ksnd_min_reconnectms, - .maxlen = sizeof (int), - .mode = 0444, - .proc_handler = &proc_dointvec - }; - ksocknal_ctl_table[i++] = (cfs_sysctl_table_t) - { - .ctl_name = j++, - .procname = "max_reconnectms", - .data = ksocknal_tunables.ksnd_max_reconnectms, - .maxlen = sizeof (int), - .mode = 0444, - .proc_handler = &proc_dointvec - }; - ksocknal_ctl_table[i++] = (cfs_sysctl_table_t) - { - .ctl_name = j++, - .procname = "eager_ack", - .data = ksocknal_tunables.ksnd_eager_ack, - .maxlen = sizeof (int), - .mode = 0644, - .proc_handler = &proc_dointvec - }; - ksocknal_ctl_table[i++] = (cfs_sysctl_table_t) - { - .ctl_name = j++, - .procname = "zero_copy", - .data = ksocknal_tunables.ksnd_zc_min_frag, - .maxlen = sizeof (int), - .mode = 0644, - .proc_handler = &proc_dointvec - }; - ksocknal_ctl_table[i++] = (cfs_sysctl_table_t) - { - .ctl_name = j++, - .procname = "typed", - .data = ksocknal_tunables.ksnd_typed_conns, - .maxlen = sizeof (int), - .mode = 0444, - .proc_handler = &proc_dointvec - }; - ksocknal_ctl_table[i++] = (cfs_sysctl_table_t) - { - .ctl_name = j++, - .procname = "min_bulk", - .data = ksocknal_tunables.ksnd_min_bulk, - .maxlen = sizeof (int), - .mode = 0644, - .proc_handler = &proc_dointvec - }; - ksocknal_ctl_table[i++] = (cfs_sysctl_table_t) - { - .ctl_name = j++, - .procname = "rx_buffer_size", - .data = ksocknal_tunables.ksnd_rx_buffer_size, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = &proc_dointvec - }; - ksocknal_ctl_table[i++] = (cfs_sysctl_table_t) - { - .ctl_name = j++, - .procname = "tx_buffer_size", - .data = ksocknal_tunables.ksnd_tx_buffer_size, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = &proc_dointvec - }; - ksocknal_ctl_table[i++] = (cfs_sysctl_table_t) - { - .ctl_name = j++, - .procname = "nagle", - .data = ksocknal_tunables.ksnd_nagle, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = &proc_dointvec - }; -#if CPU_AFFINITY - ksocknal_ctl_table[i++] = (cfs_sysctl_table_t) - { - .ctl_name = j++, - .procname = "irq_affinity", - .data = ksocknal_tunables.ksnd_irq_affinity, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = &proc_dointvec - }; -#endif - ksocknal_ctl_table[i++] = (cfs_sysctl_table_t) - { - .ctl_name = j++, - .procname = "keepalive_idle", - .data = ksocknal_tunables.ksnd_keepalive_idle, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = &proc_dointvec - }; - ksocknal_ctl_table[i++] = (cfs_sysctl_table_t) - { - .ctl_name = j++, - .procname = "keepalive_count", - .data = ksocknal_tunables.ksnd_keepalive_count, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = &proc_dointvec - }; - ksocknal_ctl_table[i++] = (cfs_sysctl_table_t) - { - .ctl_name = j++, - .procname = "keepalive_intvl", - .data = ksocknal_tunables.ksnd_keepalive_intvl, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = &proc_dointvec - }; -#ifdef SOCKNAL_BACKOFF - ksocknal_ctl_table[i++] = (cfs_sysctl_table_t) - { - .ctl_name = j++, - .procname = "backoff_init", - .data = ksocknal_tunables.ksnd_backoff_init, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = &proc_dointvec - }; - ksocknal_ctl_table[i++] = (cfs_sysctl_table_t) - { - .ctl_name = j++, - .procname = "backoff_max", - .data = ksocknal_tunables.ksnd_backoff_max, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = &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 = cfs_register_sysctl_table(ksocknal_top_ctl_table, 0); @@ -235,7 +385,7 @@ ksocknal_lib_tunables_fini () 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]; @@ -254,13 +404,13 @@ ksocknal_lib_bind_irq (unsigned int irq) 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; @@ -308,7 +458,7 @@ unsigned int 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) @@ -331,9 +481,12 @@ ksocknal_lib_sock_irq (struct socket *sock) } 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 */ @@ -363,7 +516,7 @@ ksocknal_lib_send_iov (ksock_conn_t *conn, ksock_tx_t *tx) 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 = { @@ -398,16 +551,18 @@ 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; @@ -420,7 +575,12 @@ ksocknal_lib_send_kiov (ksock_conn_t *conn, ksock_tx_t *tx) 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; @@ -430,7 +590,7 @@ ksocknal_lib_send_kiov (ksock_conn_t *conn, ksock_tx_t *tx) #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 = { @@ -491,7 +651,7 @@ ksocknal_lib_recv_iov (ksock_conn_t *conn) 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; @@ -551,26 +711,72 @@ ksocknal_lib_recv_iov (ksock_conn_t *conn) 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 @@ -580,15 +786,25 @@ ksocknal_lib_recv_kiov (ksock_conn_t *conn) 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); @@ -615,13 +831,19 @@ ksocknal_lib_recv_kiov (ksock_conn_t *conn) kunmap(kiov[i].kiov_page); } } - for (i = 0; i < niov; i++) - kunmap(kiov[i].kiov_page); + + 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; @@ -759,6 +981,9 @@ ksocknal_lib_setup_sock (struct socket *sock) #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, @@ -773,6 +998,9 @@ ksocknal_lib_setup_sock (struct socket *sock) 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, @@ -906,7 +1134,7 @@ ksocknal_data_ready (struct sock *sk, int n) /* 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 */ @@ -915,7 +1143,7 @@ ksocknal_data_ready (struct sock *sk, int n) } else ksocknal_read_callback(conn); - read_unlock (&ksocknal_data.ksnd_global_lock); + cfs_read_unlock (&ksocknal_data.ksnd_global_lock); EXIT; } @@ -929,7 +1157,7 @@ ksocknal_write_space (struct sock *sk) /* 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); @@ -948,7 +1176,7 @@ ksocknal_write_space (struct sock *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; } @@ -962,7 +1190,7 @@ ksocknal_write_space (struct sock *sk) clear_bit (SOCK_NOSPACE, &sk->sk_socket->flags); } - read_unlock (&ksocknal_data.ksnd_global_lock); + cfs_read_unlock (&ksocknal_data.ksnd_global_lock); } void @@ -998,3 +1226,63 @@ ksocknal_lib_reset_callback(struct socket *sock, ksock_conn_t *conn) 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 +}