4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 #define DEBUG_SUBSYSTEM S_LNET
38 #include "../../../include/linux/libcfs/libcfs.h"
42 #include <linux/file.h>
43 /* For sys_open & sys_close */
44 #include <linux/syscalls.h>
47 libcfs_sock_ioctl(int cmd, unsigned long arg)
49 mm_segment_t oldmm = get_fs();
52 struct file *sock_filp;
54 rc = sock_create (PF_INET, SOCK_STREAM, 0, &sock);
56 CERROR ("Can't create socket: %d\n", rc);
60 sock_filp = sock_alloc_file(sock, 0, NULL);
61 if (IS_ERR(sock_filp)) {
63 rc = PTR_ERR(sock_filp);
68 if (sock_filp->f_op->unlocked_ioctl)
69 rc = sock_filp->f_op->unlocked_ioctl(sock_filp, cmd, arg);
78 libcfs_ipif_query (char *name, int *up, __u32 *ip, __u32 *mask)
85 nob = strnlen(name, IFNAMSIZ);
86 if (nob == IFNAMSIZ) {
87 CERROR("Interface name %s too long\n", name);
91 CLASSERT (sizeof(ifr.ifr_name) >= IFNAMSIZ);
93 strcpy(ifr.ifr_name, name);
94 rc = libcfs_sock_ioctl(SIOCGIFFLAGS, (unsigned long)&ifr);
97 CERROR("Can't get flags for interface %s\n", name);
101 if ((ifr.ifr_flags & IFF_UP) == 0) {
102 CDEBUG(D_NET, "Interface %s down\n", name);
110 strcpy(ifr.ifr_name, name);
111 ifr.ifr_addr.sa_family = AF_INET;
112 rc = libcfs_sock_ioctl(SIOCGIFADDR, (unsigned long)&ifr);
115 CERROR("Can't get IP address for interface %s\n", name);
119 val = ((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr.s_addr;
122 strcpy(ifr.ifr_name, name);
123 ifr.ifr_addr.sa_family = AF_INET;
124 rc = libcfs_sock_ioctl(SIOCGIFNETMASK, (unsigned long)&ifr);
127 CERROR("Can't get netmask for interface %s\n", name);
131 val = ((struct sockaddr_in *)&ifr.ifr_netmask)->sin_addr.s_addr;
137 EXPORT_SYMBOL(libcfs_ipif_query);
140 libcfs_ipif_enumerate (char ***namesp)
142 /* Allocate and fill in 'names', returning # interfaces/error */
154 nalloc = 16; /* first guess at max interfaces */
157 if (nalloc * sizeof(*ifr) > PAGE_CACHE_SIZE) {
159 nalloc = PAGE_CACHE_SIZE/sizeof(*ifr);
160 CWARN("Too many interfaces: only enumerating first %d\n",
164 LIBCFS_ALLOC(ifr, nalloc * sizeof(*ifr));
166 CERROR ("ENOMEM enumerating up to %d interfaces\n", nalloc);
171 ifc.ifc_buf = (char *)ifr;
172 ifc.ifc_len = nalloc * sizeof(*ifr);
174 rc = libcfs_sock_ioctl(SIOCGIFCONF, (unsigned long)&ifc);
177 CERROR ("Error %d enumerating interfaces\n", rc);
183 nfound = ifc.ifc_len/sizeof(*ifr);
184 LASSERT (nfound <= nalloc);
186 if (nfound < nalloc || toobig)
189 LIBCFS_FREE(ifr, nalloc * sizeof(*ifr));
196 LIBCFS_ALLOC(names, nfound * sizeof(*names));
202 for (i = 0; i < nfound; i++) {
204 nob = strnlen (ifr[i].ifr_name, IFNAMSIZ);
205 if (nob == IFNAMSIZ) {
206 /* no space for terminating NULL */
207 CERROR("interface name %.*s too long (%d max)\n",
208 nob, ifr[i].ifr_name, IFNAMSIZ);
213 LIBCFS_ALLOC(names[i], IFNAMSIZ);
214 if (names[i] == NULL) {
219 memcpy(names[i], ifr[i].ifr_name, nob);
228 libcfs_ipif_free_enumeration(names, nfound);
230 LIBCFS_FREE(ifr, nalloc * sizeof(*ifr));
235 EXPORT_SYMBOL(libcfs_ipif_enumerate);
238 libcfs_ipif_free_enumeration (char **names, int n)
244 for (i = 0; i < n && names[i] != NULL; i++)
245 LIBCFS_FREE(names[i], IFNAMSIZ);
247 LIBCFS_FREE(names, n * sizeof(*names));
250 EXPORT_SYMBOL(libcfs_ipif_free_enumeration);
253 libcfs_sock_write (struct socket *sock, void *buffer, int nob, int timeout)
256 long ticks = timeout * HZ;
261 /* Caller may pass a zero timeout if she thinks the socket buffer is
262 * empty enough to take the whole message immediately */
269 struct msghdr msg = {
270 .msg_flags = (timeout == 0) ? MSG_DONTWAIT : 0
274 /* Set send timeout to remaining time */
275 tv = (struct timeval) {
276 .tv_sec = ticks / HZ,
277 .tv_usec = ((ticks % HZ) * 1000000) / HZ
279 rc = kernel_setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO,
280 (char *)&tv, sizeof(tv));
282 CERROR("Can't set socket send timeout %ld.%06d: %d\n",
283 (long)tv.tv_sec, (int)tv.tv_usec, rc);
289 rc = kernel_sendmsg(sock, &msg, &iov, 1, nob);
290 ticks -= jiffies - then;
299 CERROR ("Unexpected zero rc\n");
300 return -ECONNABORTED;
306 buffer = ((char *)buffer) + rc;
312 EXPORT_SYMBOL(libcfs_sock_write);
315 libcfs_sock_read (struct socket *sock, void *buffer, int nob, int timeout)
318 long ticks = timeout * HZ;
330 struct msghdr msg = {
334 /* Set receive timeout to remaining time */
335 tv = (struct timeval) {
336 .tv_sec = ticks / HZ,
337 .tv_usec = ((ticks % HZ) * 1000000) / HZ
339 rc = kernel_setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO,
340 (char *)&tv, sizeof(tv));
342 CERROR("Can't set socket recv timeout %ld.%06d: %d\n",
343 (long)tv.tv_sec, (int)tv.tv_usec, rc);
348 rc = kernel_recvmsg(sock, &msg, &iov, 1, nob, 0);
349 ticks -= jiffies - then;
357 buffer = ((char *)buffer) + rc;
368 EXPORT_SYMBOL(libcfs_sock_read);
371 libcfs_sock_create (struct socket **sockp, int *fatal,
372 __u32 local_ip, int local_port)
374 struct sockaddr_in locaddr;
379 /* All errors are fatal except bind failure if the port is in use */
382 rc = sock_create (PF_INET, SOCK_STREAM, 0, &sock);
385 CERROR ("Can't create socket: %d\n", rc);
390 rc = kernel_setsockopt(sock, SOL_SOCKET, SO_REUSEADDR,
391 (char *)&option, sizeof (option));
393 CERROR("Can't set SO_REUSEADDR for socket: %d\n", rc);
397 if (local_ip != 0 || local_port != 0) {
398 memset(&locaddr, 0, sizeof(locaddr));
399 locaddr.sin_family = AF_INET;
400 locaddr.sin_port = htons(local_port);
401 locaddr.sin_addr.s_addr = (local_ip == 0) ?
402 INADDR_ANY : htonl(local_ip);
404 rc = sock->ops->bind(sock, (struct sockaddr *)&locaddr,
406 if (rc == -EADDRINUSE) {
407 CDEBUG(D_NET, "Port %d already in use\n", local_port);
412 CERROR("Error trying to bind to port %d: %d\n",
426 libcfs_sock_setbuf (struct socket *sock, int txbufsize, int rxbufsize)
431 if (txbufsize != 0) {
433 rc = kernel_setsockopt(sock, SOL_SOCKET, SO_SNDBUF,
434 (char *)&option, sizeof (option));
436 CERROR ("Can't set send buffer %d: %d\n",
442 if (rxbufsize != 0) {
444 rc = kernel_setsockopt(sock, SOL_SOCKET, SO_RCVBUF,
445 (char *)&option, sizeof (option));
447 CERROR ("Can't set receive buffer %d: %d\n",
456 EXPORT_SYMBOL(libcfs_sock_setbuf);
459 libcfs_sock_getaddr (struct socket *sock, int remote, __u32 *ip, int *port)
461 struct sockaddr_in sin;
462 int len = sizeof (sin);
465 rc = sock->ops->getname (sock, (struct sockaddr *)&sin, &len,
468 CERROR ("Error %d getting sock %s IP/port\n",
469 rc, remote ? "peer" : "local");
474 *ip = ntohl (sin.sin_addr.s_addr);
477 *port = ntohs (sin.sin_port);
482 EXPORT_SYMBOL(libcfs_sock_getaddr);
485 libcfs_sock_getbuf (struct socket *sock, int *txbufsize, int *rxbufsize)
488 if (txbufsize != NULL) {
489 *txbufsize = sock->sk->sk_sndbuf;
492 if (rxbufsize != NULL) {
493 *rxbufsize = sock->sk->sk_rcvbuf;
499 EXPORT_SYMBOL(libcfs_sock_getbuf);
502 libcfs_sock_listen (struct socket **sockp,
503 __u32 local_ip, int local_port, int backlog)
508 rc = libcfs_sock_create(sockp, &fatal, local_ip, local_port);
511 CERROR("Can't create socket: port %d already in use\n",
516 rc = (*sockp)->ops->listen(*sockp, backlog);
520 CERROR("Can't set listen backlog %d: %d\n", backlog, rc);
521 sock_release(*sockp);
525 EXPORT_SYMBOL(libcfs_sock_listen);
528 libcfs_sock_accept (struct socket **newsockp, struct socket *sock)
531 struct socket *newsock;
534 init_waitqueue_entry(&wait, current);
536 /* XXX this should add a ref to sock->ops->owner, if
537 * TCP could be a module */
538 rc = sock_create_lite(PF_PACKET, sock->type, IPPROTO_TCP, &newsock);
540 CERROR("Can't allocate socket\n");
544 newsock->ops = sock->ops;
546 rc = sock->ops->accept(sock, newsock, O_NONBLOCK);
548 /* Nothing ready, so wait for activity */
549 set_current_state(TASK_INTERRUPTIBLE);
550 add_wait_queue(sk_sleep(sock->sk), &wait);
552 remove_wait_queue(sk_sleep(sock->sk), &wait);
553 set_current_state(TASK_RUNNING);
554 rc = sock->ops->accept(sock, newsock, O_NONBLOCK);
564 sock_release(newsock);
568 EXPORT_SYMBOL(libcfs_sock_accept);
571 libcfs_sock_abort_accept (struct socket *sock)
573 wake_up_all(sk_sleep(sock->sk));
576 EXPORT_SYMBOL(libcfs_sock_abort_accept);
579 libcfs_sock_connect (struct socket **sockp, int *fatal,
580 __u32 local_ip, int local_port,
581 __u32 peer_ip, int peer_port)
583 struct sockaddr_in srvaddr;
586 rc = libcfs_sock_create(sockp, fatal, local_ip, local_port);
590 memset (&srvaddr, 0, sizeof (srvaddr));
591 srvaddr.sin_family = AF_INET;
592 srvaddr.sin_port = htons(peer_port);
593 srvaddr.sin_addr.s_addr = htonl(peer_ip);
595 rc = (*sockp)->ops->connect(*sockp,
596 (struct sockaddr *)&srvaddr, sizeof(srvaddr),
601 /* EADDRNOTAVAIL probably means we're already connected to the same
602 * peer/port on the same local port on a differently typed
603 * connection. Let our caller retry with a different local
605 *fatal = !(rc == -EADDRNOTAVAIL);
607 CDEBUG_LIMIT(*fatal ? D_NETERROR : D_NET,
608 "Error %d connecting %pI4h/%d -> %pI4h/%d\n", rc,
609 &local_ip, local_port, &peer_ip, peer_port);
611 sock_release(*sockp);
615 EXPORT_SYMBOL(libcfs_sock_connect);
618 libcfs_sock_release (struct socket *sock)
623 EXPORT_SYMBOL(libcfs_sock_release);