osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 1 | /* |
| 2 | * iplink.c "ip link". |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; either version |
| 7 | * 2 of the License, or (at your option) any later version. |
| 8 | * |
| 9 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> |
| 10 | * |
| 11 | */ |
| 12 | |
| 13 | #include <stdio.h> |
| 14 | #include <stdlib.h> |
| 15 | #include <unistd.h> |
| 16 | #include <syslog.h> |
| 17 | #include <fcntl.h> |
Patrick McHardy | 1d93483 | 2007-08-22 10:49:01 -0700 | [diff] [blame] | 18 | #include <dlfcn.h> |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 19 | #include <errno.h> |
| 20 | #include <sys/socket.h> |
| 21 | #include <linux/if.h> |
| 22 | #include <linux/if_packet.h> |
| 23 | #include <linux/if_ether.h> |
| 24 | #include <linux/sockios.h> |
| 25 | #include <netinet/in.h> |
| 26 | #include <arpa/inet.h> |
| 27 | #include <string.h> |
| 28 | #include <sys/ioctl.h> |
| 29 | #include <linux/sockios.h> |
| 30 | |
| 31 | #include "rt_names.h" |
| 32 | #include "utils.h" |
| 33 | #include "ip_common.h" |
| 34 | |
Patrick McHardy | 1d93483 | 2007-08-22 10:49:01 -0700 | [diff] [blame] | 35 | #define IPLINK_IOCTL_COMPAT 1 |
Andreas Henriksson | 5e3bb53 | 2008-08-22 16:54:12 +0200 | [diff] [blame] | 36 | #ifndef LIBDIR |
Christoph J. Thompson | 5c434a9 | 2012-03-01 17:46:26 +0100 | [diff] [blame] | 37 | #define LIBDIR "/usr/lib" |
Rafael Almeida | b514b35 | 2008-06-01 21:33:44 -0300 | [diff] [blame] | 38 | #endif |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 39 | |
| 40 | static void usage(void) __attribute__((noreturn)); |
Stephen Hemminger | 750a405 | 2008-10-13 07:17:08 -0700 | [diff] [blame] | 41 | static int iplink_have_newlink(void); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 42 | |
| 43 | void iplink_usage(void) |
| 44 | { |
Stephen Hemminger | 750a405 | 2008-10-13 07:17:08 -0700 | [diff] [blame] | 45 | if (iplink_have_newlink()) { |
Sridhar Samudrala | a22e929 | 2011-10-06 16:10:51 -0700 | [diff] [blame] | 46 | fprintf(stderr, "Usage: ip link add [link DEV] [ name ] NAME\n"); |
Stephen Hemminger | 750a405 | 2008-10-13 07:17:08 -0700 | [diff] [blame] | 47 | fprintf(stderr, " [ txqueuelen PACKETS ]\n"); |
| 48 | fprintf(stderr, " [ address LLADDR ]\n"); |
| 49 | fprintf(stderr, " [ broadcast LLADDR ]\n"); |
| 50 | fprintf(stderr, " [ mtu MTU ]\n"); |
Jiri Pirko | d992f3e | 2012-08-01 16:19:55 -0700 | [diff] [blame] | 51 | fprintf(stderr, " [ numtxqueues QUEUE_COUNT ]\n"); |
| 52 | fprintf(stderr, " [ numrxqueues QUEUE_COUNT ]\n"); |
Stephen Hemminger | 750a405 | 2008-10-13 07:17:08 -0700 | [diff] [blame] | 53 | fprintf(stderr, " type TYPE [ ARGS ]\n"); |
| 54 | fprintf(stderr, " ip link delete DEV type TYPE [ ARGS ]\n"); |
| 55 | fprintf(stderr, "\n"); |
Vlad Dogaru | db02608 | 2011-02-02 20:23:41 +0200 | [diff] [blame] | 56 | fprintf(stderr, " ip link set { dev DEVICE | group DEVGROUP } [ { up | down } ]\n"); |
Stephen Hemminger | 750a405 | 2008-10-13 07:17:08 -0700 | [diff] [blame] | 57 | } else |
| 58 | fprintf(stderr, "Usage: ip link set DEVICE [ { up | down } ]\n"); |
| 59 | |
| 60 | fprintf(stderr, " [ arp { on | off } ]\n"); |
| 61 | fprintf(stderr, " [ dynamic { on | off } ]\n"); |
| 62 | fprintf(stderr, " [ multicast { on | off } ]\n"); |
| 63 | fprintf(stderr, " [ allmulticast { on | off } ]\n"); |
| 64 | fprintf(stderr, " [ promisc { on | off } ]\n"); |
| 65 | fprintf(stderr, " [ trailers { on | off } ]\n"); |
| 66 | fprintf(stderr, " [ txqueuelen PACKETS ]\n"); |
| 67 | fprintf(stderr, " [ name NEWNAME ]\n"); |
| 68 | fprintf(stderr, " [ address LLADDR ]\n"); |
| 69 | fprintf(stderr, " [ broadcast LLADDR ]\n"); |
| 70 | fprintf(stderr, " [ mtu MTU ]\n"); |
| 71 | fprintf(stderr, " [ netns PID ]\n"); |
Eric W. Biederman | 0dc34c7 | 2011-07-13 09:48:26 -0700 | [diff] [blame] | 72 | fprintf(stderr, " [ netns NAME ]\n"); |
Stephen Hemminger | ace9c96 | 2009-03-23 10:46:47 -0700 | [diff] [blame] | 73 | fprintf(stderr, " [ alias NAME ]\n"); |
Williams, Mitch A | ae7229d | 2010-02-10 01:47:08 +0000 | [diff] [blame] | 74 | fprintf(stderr, " [ vf NUM [ mac LLADDR ]\n"); |
| 75 | fprintf(stderr, " [ vlan VLANID [ qos VLAN-QOS ] ]\n"); |
Greg Rose | 7b8179c | 2011-10-13 20:31:32 +0000 | [diff] [blame] | 76 | |
Stephen Hemminger | 1598b9e | 2011-01-13 14:53:02 -0800 | [diff] [blame] | 77 | fprintf(stderr, " [ rate TXRATE ] ] \n"); |
Greg Rose | 7b8179c | 2011-10-13 20:31:32 +0000 | [diff] [blame] | 78 | |
| 79 | fprintf(stderr, " [ spoofchk { on | off} ] ] \n"); |
Jiri Pirko | a1e191b | 2011-02-25 19:55:19 -0800 | [diff] [blame] | 80 | fprintf(stderr, " [ master DEVICE ]\n"); |
| 81 | fprintf(stderr, " [ nomaster ]\n"); |
Petr Ĺ abata | 4405123 | 2013-03-14 15:10:44 +0100 | [diff] [blame] | 82 | fprintf(stderr, " ip link show [ DEVICE | group GROUP ] [up]\n"); |
Stephen Hemminger | 750a405 | 2008-10-13 07:17:08 -0700 | [diff] [blame] | 83 | |
| 84 | if (iplink_have_newlink()) { |
| 85 | fprintf(stderr, "\n"); |
Nicolas Dichtel | 9d0efc1 | 2012-12-12 09:09:23 -0800 | [diff] [blame] | 86 | fprintf(stderr, "TYPE := { vlan | veth | vcan | dummy | ifb | macvlan | can |\n"); |
Zhi Yong Wu | 602e9d3 | 2012-12-16 00:21:08 +0800 | [diff] [blame] | 87 | fprintf(stderr, " bridge | ipoib | ip6tnl | ipip | sit | vxlan }\n"); |
Stephen Hemminger | 750a405 | 2008-10-13 07:17:08 -0700 | [diff] [blame] | 88 | } |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 89 | exit(-1); |
| 90 | } |
| 91 | |
| 92 | static void usage(void) |
| 93 | { |
| 94 | iplink_usage(); |
| 95 | } |
| 96 | |
Kees van Reeuwijk | 14645ec | 2013-02-08 03:32:36 +0000 | [diff] [blame] | 97 | static int on_off(const char *msg, const char *realval) |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 98 | { |
Kees van Reeuwijk | 14645ec | 2013-02-08 03:32:36 +0000 | [diff] [blame] | 99 | fprintf(stderr, "Error: argument of \"%s\" must be \"on\" or \"off\", not \"%s\"\n", msg, realval); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 100 | return -1; |
| 101 | } |
| 102 | |
Patrick McHardy | 1d93483 | 2007-08-22 10:49:01 -0700 | [diff] [blame] | 103 | static void *BODY; /* cached dlopen(NULL) handle */ |
| 104 | static struct link_util *linkutil_list; |
| 105 | |
| 106 | struct link_util *get_link_kind(const char *id) |
| 107 | { |
| 108 | void *dlh; |
| 109 | char buf[256]; |
| 110 | struct link_util *l; |
| 111 | |
| 112 | for (l = linkutil_list; l; l = l->next) |
| 113 | if (strcmp(l->id, id) == 0) |
| 114 | return l; |
| 115 | |
Andreas Henriksson | 5e3bb53 | 2008-08-22 16:54:12 +0200 | [diff] [blame] | 116 | snprintf(buf, sizeof(buf), LIBDIR "/ip/link_%s.so", id); |
Patrick McHardy | 1d93483 | 2007-08-22 10:49:01 -0700 | [diff] [blame] | 117 | dlh = dlopen(buf, RTLD_LAZY); |
| 118 | if (dlh == NULL) { |
| 119 | /* look in current binary, only open once */ |
| 120 | dlh = BODY; |
| 121 | if (dlh == NULL) { |
| 122 | dlh = BODY = dlopen(NULL, RTLD_LAZY); |
| 123 | if (dlh == NULL) |
| 124 | return NULL; |
| 125 | } |
| 126 | } |
| 127 | |
| 128 | snprintf(buf, sizeof(buf), "%s_link_util", id); |
| 129 | l = dlsym(dlh, buf); |
| 130 | if (l == NULL) |
| 131 | return NULL; |
| 132 | |
| 133 | l->next = linkutil_list; |
| 134 | linkutil_list = l; |
| 135 | return l; |
| 136 | } |
| 137 | |
Stephen Hemminger | d1f28cf | 2013-02-12 11:09:03 -0800 | [diff] [blame] | 138 | static int get_link_mode(const char *mode) |
Stephen Hemminger | 8249928 | 2012-03-19 17:24:43 -0700 | [diff] [blame] | 139 | { |
Stephen Hemminger | 4ccfb44 | 2012-04-05 15:10:19 -0700 | [diff] [blame] | 140 | if (strcasecmp(mode, "default") == 0) |
Stephen Hemminger | 8249928 | 2012-03-19 17:24:43 -0700 | [diff] [blame] | 141 | return IF_LINK_MODE_DEFAULT; |
Stephen Hemminger | 4ccfb44 | 2012-04-05 15:10:19 -0700 | [diff] [blame] | 142 | if (strcasecmp(mode, "dormant") == 0) |
Stephen Hemminger | 8249928 | 2012-03-19 17:24:43 -0700 | [diff] [blame] | 143 | return IF_LINK_MODE_DORMANT; |
| 144 | return -1; |
| 145 | } |
| 146 | |
Patrick McHardy | 1d93483 | 2007-08-22 10:49:01 -0700 | [diff] [blame] | 147 | #if IPLINK_IOCTL_COMPAT |
| 148 | static int have_rtnl_newlink = -1; |
| 149 | |
| 150 | static int accept_msg(const struct sockaddr_nl *who, |
| 151 | struct nlmsghdr *n, void *arg) |
| 152 | { |
| 153 | struct nlmsgerr *err = (struct nlmsgerr *)NLMSG_DATA(n); |
| 154 | |
Patrick McHardy | 66e529f | 2007-10-25 19:46:29 +0200 | [diff] [blame] | 155 | if (n->nlmsg_type == NLMSG_ERROR && |
| 156 | (err->error == -EOPNOTSUPP || err->error == -EINVAL)) |
Patrick McHardy | 1d93483 | 2007-08-22 10:49:01 -0700 | [diff] [blame] | 157 | have_rtnl_newlink = 0; |
| 158 | else |
| 159 | have_rtnl_newlink = 1; |
| 160 | return -1; |
| 161 | } |
| 162 | |
| 163 | static int iplink_have_newlink(void) |
| 164 | { |
| 165 | struct { |
| 166 | struct nlmsghdr n; |
| 167 | struct ifinfomsg i; |
| 168 | char buf[1024]; |
| 169 | } req; |
| 170 | |
| 171 | if (have_rtnl_newlink < 0) { |
| 172 | memset(&req, 0, sizeof(req)); |
| 173 | |
| 174 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)); |
| 175 | req.n.nlmsg_flags = NLM_F_REQUEST|NLM_F_ACK; |
| 176 | req.n.nlmsg_type = RTM_NEWLINK; |
| 177 | req.i.ifi_family = AF_UNSPEC; |
| 178 | |
Stephen Hemminger | 6cf8398 | 2011-12-23 10:40:04 -0800 | [diff] [blame] | 179 | rtnl_send(&rth, &req.n, req.n.nlmsg_len); |
Patrick McHardy | 1d93483 | 2007-08-22 10:49:01 -0700 | [diff] [blame] | 180 | rtnl_listen(&rth, accept_msg, NULL); |
| 181 | } |
| 182 | return have_rtnl_newlink; |
| 183 | } |
| 184 | #else /* IPLINK_IOCTL_COMPAT */ |
| 185 | static int iplink_have_newlink(void) |
| 186 | { |
| 187 | return 1; |
| 188 | } |
| 189 | #endif /* ! IPLINK_IOCTL_COMPAT */ |
| 190 | |
Pavel Emelyanov | 909dfe2 | 2007-07-19 13:32:31 +0400 | [diff] [blame] | 191 | struct iplink_req { |
| 192 | struct nlmsghdr n; |
| 193 | struct ifinfomsg i; |
| 194 | char buf[1024]; |
| 195 | }; |
| 196 | |
Stephen Hemminger | d1f28cf | 2013-02-12 11:09:03 -0800 | [diff] [blame] | 197 | static int iplink_parse_vf(int vf, int *argcp, char ***argvp, |
Stephen Hemminger | 1598b9e | 2011-01-13 14:53:02 -0800 | [diff] [blame] | 198 | struct iplink_req *req) |
Roopa Prabhu | 632110a | 2010-11-09 14:47:52 +0000 | [diff] [blame] | 199 | { |
| 200 | int len, argc = *argcp; |
| 201 | char **argv = *argvp; |
Roopa Prabhu | 632110a | 2010-11-09 14:47:52 +0000 | [diff] [blame] | 202 | struct rtattr *vfinfo; |
Stephen Hemminger | 1598b9e | 2011-01-13 14:53:02 -0800 | [diff] [blame] | 203 | |
| 204 | vfinfo = addattr_nest(&req->n, sizeof(*req), IFLA_VF_INFO); |
Roopa Prabhu | 632110a | 2010-11-09 14:47:52 +0000 | [diff] [blame] | 205 | |
| 206 | while (NEXT_ARG_OK()) { |
| 207 | NEXT_ARG(); |
Stephen Hemminger | 1598b9e | 2011-01-13 14:53:02 -0800 | [diff] [blame] | 208 | if (matches(*argv, "mac") == 0) { |
| 209 | struct ifla_vf_mac ivm; |
Roopa Prabhu | 632110a | 2010-11-09 14:47:52 +0000 | [diff] [blame] | 210 | NEXT_ARG(); |
Stephen Hemminger | 1598b9e | 2011-01-13 14:53:02 -0800 | [diff] [blame] | 211 | ivm.vf = vf; |
| 212 | len = ll_addr_a2n((char *)ivm.mac, 32, *argv); |
| 213 | if (len < 0) |
| 214 | return -1; |
| 215 | addattr_l(&req->n, sizeof(*req), IFLA_VF_MAC, &ivm, sizeof(ivm)); |
Roopa Prabhu | 632110a | 2010-11-09 14:47:52 +0000 | [diff] [blame] | 216 | } else if (matches(*argv, "vlan") == 0) { |
Stephen Hemminger | 1598b9e | 2011-01-13 14:53:02 -0800 | [diff] [blame] | 217 | struct ifla_vf_vlan ivv; |
Roopa Prabhu | 632110a | 2010-11-09 14:47:52 +0000 | [diff] [blame] | 218 | NEXT_ARG(); |
Stephen Hemminger | 1598b9e | 2011-01-13 14:53:02 -0800 | [diff] [blame] | 219 | if (get_unsigned(&ivv.vlan, *argv, 0)) { |
| 220 | invarg("Invalid \"vlan\" value\n", *argv); |
| 221 | } |
| 222 | ivv.vf = vf; |
| 223 | ivv.qos = 0; |
Roopa Prabhu | 632110a | 2010-11-09 14:47:52 +0000 | [diff] [blame] | 224 | if (NEXT_ARG_OK()) { |
| 225 | NEXT_ARG(); |
| 226 | if (matches(*argv, "qos") == 0) { |
| 227 | NEXT_ARG(); |
Stephen Hemminger | 1598b9e | 2011-01-13 14:53:02 -0800 | [diff] [blame] | 228 | if (get_unsigned(&ivv.qos, *argv, 0)) { |
| 229 | invarg("Invalid \"qos\" value\n", *argv); |
| 230 | } |
Roopa Prabhu | 632110a | 2010-11-09 14:47:52 +0000 | [diff] [blame] | 231 | } else { |
| 232 | /* rewind arg */ |
| 233 | PREV_ARG(); |
| 234 | } |
| 235 | } |
Stephen Hemminger | 1598b9e | 2011-01-13 14:53:02 -0800 | [diff] [blame] | 236 | addattr_l(&req->n, sizeof(*req), IFLA_VF_VLAN, &ivv, sizeof(ivv)); |
Roopa Prabhu | 632110a | 2010-11-09 14:47:52 +0000 | [diff] [blame] | 237 | } else if (matches(*argv, "rate") == 0) { |
Stephen Hemminger | 1598b9e | 2011-01-13 14:53:02 -0800 | [diff] [blame] | 238 | struct ifla_vf_tx_rate ivt; |
Roopa Prabhu | 632110a | 2010-11-09 14:47:52 +0000 | [diff] [blame] | 239 | NEXT_ARG(); |
Stephen Hemminger | 1598b9e | 2011-01-13 14:53:02 -0800 | [diff] [blame] | 240 | if (get_unsigned(&ivt.rate, *argv, 0)) { |
| 241 | invarg("Invalid \"rate\" value\n", *argv); |
| 242 | } |
| 243 | ivt.vf = vf; |
| 244 | addattr_l(&req->n, sizeof(*req), IFLA_VF_TX_RATE, &ivt, sizeof(ivt)); |
| 245 | |
Greg Rose | 7b8179c | 2011-10-13 20:31:32 +0000 | [diff] [blame] | 246 | } else if (matches(*argv, "spoofchk") == 0) { |
| 247 | struct ifla_vf_spoofchk ivs; |
| 248 | NEXT_ARG(); |
| 249 | if (matches(*argv, "on") == 0) |
| 250 | ivs.setting = 1; |
| 251 | else if (matches(*argv, "off") == 0) |
| 252 | ivs.setting = 0; |
| 253 | else |
| 254 | invarg("Invalid \"spoofchk\" value\n", *argv); |
| 255 | ivs.vf = vf; |
| 256 | addattr_l(&req->n, sizeof(*req), IFLA_VF_SPOOFCHK, &ivs, sizeof(ivs)); |
| 257 | |
Roopa Prabhu | 632110a | 2010-11-09 14:47:52 +0000 | [diff] [blame] | 258 | } else { |
| 259 | /* rewind arg */ |
| 260 | PREV_ARG(); |
| 261 | break; |
| 262 | } |
| 263 | } |
| 264 | |
| 265 | if (argc == *argcp) |
| 266 | incomplete_command(); |
| 267 | |
Stephen Hemminger | 1598b9e | 2011-01-13 14:53:02 -0800 | [diff] [blame] | 268 | addattr_nest_end(&req->n, vfinfo); |
Roopa Prabhu | 632110a | 2010-11-09 14:47:52 +0000 | [diff] [blame] | 269 | |
| 270 | *argcp = argc; |
| 271 | *argvp = argv; |
Stephen Hemminger | 1598b9e | 2011-01-13 14:53:02 -0800 | [diff] [blame] | 272 | return 0; |
Chris Wright | 3fd8663 | 2010-05-18 00:57:00 -0700 | [diff] [blame] | 273 | } |
| 274 | |
| 275 | |
Pavel Emelyanov | 909dfe2 | 2007-07-19 13:32:31 +0400 | [diff] [blame] | 276 | int iplink_parse(int argc, char **argv, struct iplink_req *req, |
Vlad Dogaru | db02608 | 2011-02-02 20:23:41 +0200 | [diff] [blame] | 277 | char **name, char **type, char **link, char **dev, int *group) |
Patrick McHardy | 1d93483 | 2007-08-22 10:49:01 -0700 | [diff] [blame] | 278 | { |
Pavel Emelyanov | 909dfe2 | 2007-07-19 13:32:31 +0400 | [diff] [blame] | 279 | int ret, len; |
| 280 | char abuf[32]; |
Patrick McHardy | 1d93483 | 2007-08-22 10:49:01 -0700 | [diff] [blame] | 281 | int qlen = -1; |
| 282 | int mtu = -1; |
Benjamin Thery | e2613dc | 2008-06-20 11:07:35 +0200 | [diff] [blame] | 283 | int netns = -1; |
Williams, Mitch A | ae7229d | 2010-02-10 01:47:08 +0000 | [diff] [blame] | 284 | int vf = -1; |
Jiri Pirko | d992f3e | 2012-08-01 16:19:55 -0700 | [diff] [blame] | 285 | int numtxqueues = -1; |
| 286 | int numrxqueues = -1; |
Pavel Emelyanov | 909dfe2 | 2007-07-19 13:32:31 +0400 | [diff] [blame] | 287 | |
Vlad Dogaru | db02608 | 2011-02-02 20:23:41 +0200 | [diff] [blame] | 288 | *group = -1; |
Pavel Emelyanov | 909dfe2 | 2007-07-19 13:32:31 +0400 | [diff] [blame] | 289 | ret = argc; |
| 290 | |
| 291 | while (argc > 0) { |
| 292 | if (strcmp(*argv, "up") == 0) { |
| 293 | req->i.ifi_change |= IFF_UP; |
| 294 | req->i.ifi_flags |= IFF_UP; |
| 295 | } else if (strcmp(*argv, "down") == 0) { |
| 296 | req->i.ifi_change |= IFF_UP; |
| 297 | req->i.ifi_flags &= ~IFF_UP; |
| 298 | } else if (strcmp(*argv, "name") == 0) { |
| 299 | NEXT_ARG(); |
| 300 | *name = *argv; |
| 301 | } else if (matches(*argv, "link") == 0) { |
| 302 | NEXT_ARG(); |
| 303 | *link = *argv; |
| 304 | } else if (matches(*argv, "address") == 0) { |
| 305 | NEXT_ARG(); |
| 306 | len = ll_addr_a2n(abuf, sizeof(abuf), *argv); |
Andreas Henriksson | cb2eb99 | 2009-04-30 16:50:50 +0200 | [diff] [blame] | 307 | if (len < 0) |
| 308 | return -1; |
Pavel Emelyanov | 909dfe2 | 2007-07-19 13:32:31 +0400 | [diff] [blame] | 309 | addattr_l(&req->n, sizeof(*req), IFLA_ADDRESS, abuf, len); |
| 310 | } else if (matches(*argv, "broadcast") == 0 || |
| 311 | strcmp(*argv, "brd") == 0) { |
| 312 | NEXT_ARG(); |
| 313 | len = ll_addr_a2n(abuf, sizeof(abuf), *argv); |
Andreas Henriksson | cb2eb99 | 2009-04-30 16:50:50 +0200 | [diff] [blame] | 314 | if (len < 0) |
| 315 | return -1; |
Pavel Emelyanov | 909dfe2 | 2007-07-19 13:32:31 +0400 | [diff] [blame] | 316 | addattr_l(&req->n, sizeof(*req), IFLA_BROADCAST, abuf, len); |
| 317 | } else if (matches(*argv, "txqueuelen") == 0 || |
| 318 | strcmp(*argv, "qlen") == 0 || |
| 319 | matches(*argv, "txqlen") == 0) { |
| 320 | NEXT_ARG(); |
| 321 | if (qlen != -1) |
| 322 | duparg("txqueuelen", *argv); |
| 323 | if (get_integer(&qlen, *argv, 0)) |
| 324 | invarg("Invalid \"txqueuelen\" value\n", *argv); |
| 325 | addattr_l(&req->n, sizeof(*req), IFLA_TXQLEN, &qlen, 4); |
| 326 | } else if (strcmp(*argv, "mtu") == 0) { |
| 327 | NEXT_ARG(); |
| 328 | if (mtu != -1) |
| 329 | duparg("mtu", *argv); |
| 330 | if (get_integer(&mtu, *argv, 0)) |
| 331 | invarg("Invalid \"mtu\" value\n", *argv); |
| 332 | addattr_l(&req->n, sizeof(*req), IFLA_MTU, &mtu, 4); |
Benjamin Thery | e2613dc | 2008-06-20 11:07:35 +0200 | [diff] [blame] | 333 | } else if (strcmp(*argv, "netns") == 0) { |
| 334 | NEXT_ARG(); |
| 335 | if (netns != -1) |
| 336 | duparg("netns", *argv); |
Eric W. Biederman | 0dc34c7 | 2011-07-13 09:48:26 -0700 | [diff] [blame] | 337 | if ((netns = get_netns_fd(*argv)) >= 0) |
| 338 | addattr_l(&req->n, sizeof(*req), IFLA_NET_NS_FD, &netns, 4); |
| 339 | else if (get_integer(&netns, *argv, 0) == 0) |
| 340 | addattr_l(&req->n, sizeof(*req), IFLA_NET_NS_PID, &netns, 4); |
| 341 | else |
Benjamin Thery | e2613dc | 2008-06-20 11:07:35 +0200 | [diff] [blame] | 342 | invarg("Invalid \"netns\" value\n", *argv); |
Pavel Emelyanov | 909dfe2 | 2007-07-19 13:32:31 +0400 | [diff] [blame] | 343 | } else if (strcmp(*argv, "multicast") == 0) { |
| 344 | NEXT_ARG(); |
| 345 | req->i.ifi_change |= IFF_MULTICAST; |
| 346 | if (strcmp(*argv, "on") == 0) { |
| 347 | req->i.ifi_flags |= IFF_MULTICAST; |
| 348 | } else if (strcmp(*argv, "off") == 0) { |
| 349 | req->i.ifi_flags &= ~IFF_MULTICAST; |
| 350 | } else |
Kees van Reeuwijk | 14645ec | 2013-02-08 03:32:36 +0000 | [diff] [blame] | 351 | return on_off("multicast", *argv); |
Pavel Emelyanov | 909dfe2 | 2007-07-19 13:32:31 +0400 | [diff] [blame] | 352 | } else if (strcmp(*argv, "allmulticast") == 0) { |
| 353 | NEXT_ARG(); |
| 354 | req->i.ifi_change |= IFF_ALLMULTI; |
| 355 | if (strcmp(*argv, "on") == 0) { |
| 356 | req->i.ifi_flags |= IFF_ALLMULTI; |
| 357 | } else if (strcmp(*argv, "off") == 0) { |
| 358 | req->i.ifi_flags &= ~IFF_ALLMULTI; |
| 359 | } else |
Kees van Reeuwijk | 14645ec | 2013-02-08 03:32:36 +0000 | [diff] [blame] | 360 | return on_off("allmulticast", *argv); |
Pavel Emelyanov | 909dfe2 | 2007-07-19 13:32:31 +0400 | [diff] [blame] | 361 | } else if (strcmp(*argv, "promisc") == 0) { |
| 362 | NEXT_ARG(); |
| 363 | req->i.ifi_change |= IFF_PROMISC; |
| 364 | if (strcmp(*argv, "on") == 0) { |
| 365 | req->i.ifi_flags |= IFF_PROMISC; |
| 366 | } else if (strcmp(*argv, "off") == 0) { |
| 367 | req->i.ifi_flags &= ~IFF_PROMISC; |
| 368 | } else |
Kees van Reeuwijk | 14645ec | 2013-02-08 03:32:36 +0000 | [diff] [blame] | 369 | return on_off("promisc", *argv); |
Pavel Emelyanov | 909dfe2 | 2007-07-19 13:32:31 +0400 | [diff] [blame] | 370 | } else if (strcmp(*argv, "trailers") == 0) { |
| 371 | NEXT_ARG(); |
| 372 | req->i.ifi_change |= IFF_NOTRAILERS; |
| 373 | if (strcmp(*argv, "off") == 0) { |
| 374 | req->i.ifi_flags |= IFF_NOTRAILERS; |
| 375 | } else if (strcmp(*argv, "on") == 0) { |
| 376 | req->i.ifi_flags &= ~IFF_NOTRAILERS; |
| 377 | } else |
Kees van Reeuwijk | 14645ec | 2013-02-08 03:32:36 +0000 | [diff] [blame] | 378 | return on_off("trailers", *argv); |
Pavel Emelyanov | 909dfe2 | 2007-07-19 13:32:31 +0400 | [diff] [blame] | 379 | } else if (strcmp(*argv, "arp") == 0) { |
| 380 | NEXT_ARG(); |
| 381 | req->i.ifi_change |= IFF_NOARP; |
| 382 | if (strcmp(*argv, "on") == 0) { |
| 383 | req->i.ifi_flags &= ~IFF_NOARP; |
| 384 | } else if (strcmp(*argv, "off") == 0) { |
| 385 | req->i.ifi_flags |= IFF_NOARP; |
| 386 | } else |
Kees van Reeuwijk | 14645ec | 2013-02-08 03:32:36 +0000 | [diff] [blame] | 387 | return on_off("noarp", *argv); |
Williams, Mitch A | ae7229d | 2010-02-10 01:47:08 +0000 | [diff] [blame] | 388 | } else if (strcmp(*argv, "vf") == 0) { |
Stephen Hemminger | 1598b9e | 2011-01-13 14:53:02 -0800 | [diff] [blame] | 389 | struct rtattr *vflist; |
Williams, Mitch A | ae7229d | 2010-02-10 01:47:08 +0000 | [diff] [blame] | 390 | NEXT_ARG(); |
| 391 | if (get_integer(&vf, *argv, 0)) { |
| 392 | invarg("Invalid \"vf\" value\n", *argv); |
| 393 | } |
Stephen Hemminger | 1598b9e | 2011-01-13 14:53:02 -0800 | [diff] [blame] | 394 | vflist = addattr_nest(&req->n, sizeof(*req), |
| 395 | IFLA_VFINFO_LIST); |
| 396 | len = iplink_parse_vf(vf, &argc, &argv, req); |
| 397 | if (len < 0) |
| 398 | return -1; |
| 399 | addattr_nest_end(&req->n, vflist); |
Jiri Pirko | a1e191b | 2011-02-25 19:55:19 -0800 | [diff] [blame] | 400 | } else if (matches(*argv, "master") == 0) { |
| 401 | int ifindex; |
| 402 | NEXT_ARG(); |
| 403 | ifindex = ll_name_to_index(*argv); |
| 404 | if (!ifindex) |
| 405 | invarg("Device does not exist\n", *argv); |
| 406 | addattr_l(&req->n, sizeof(*req), IFLA_MASTER, |
| 407 | &ifindex, 4); |
| 408 | } else if (matches(*argv, "nomaster") == 0) { |
| 409 | int ifindex = 0; |
| 410 | addattr_l(&req->n, sizeof(*req), IFLA_MASTER, |
| 411 | &ifindex, 4); |
Pavel Emelyanov | 909dfe2 | 2007-07-19 13:32:31 +0400 | [diff] [blame] | 412 | } else if (matches(*argv, "dynamic") == 0) { |
| 413 | NEXT_ARG(); |
| 414 | req->i.ifi_change |= IFF_DYNAMIC; |
| 415 | if (strcmp(*argv, "on") == 0) { |
| 416 | req->i.ifi_flags |= IFF_DYNAMIC; |
| 417 | } else if (strcmp(*argv, "off") == 0) { |
| 418 | req->i.ifi_flags &= ~IFF_DYNAMIC; |
| 419 | } else |
Kees van Reeuwijk | 14645ec | 2013-02-08 03:32:36 +0000 | [diff] [blame] | 420 | return on_off("dynamic", *argv); |
Pavel Emelyanov | 909dfe2 | 2007-07-19 13:32:31 +0400 | [diff] [blame] | 421 | } else if (matches(*argv, "type") == 0) { |
| 422 | NEXT_ARG(); |
| 423 | *type = *argv; |
| 424 | argc--; argv++; |
| 425 | break; |
Stephen Hemminger | ace9c96 | 2009-03-23 10:46:47 -0700 | [diff] [blame] | 426 | } else if (matches(*argv, "alias") == 0) { |
| 427 | NEXT_ARG(); |
| 428 | addattr_l(&req->n, sizeof(*req), IFLA_IFALIAS, |
| 429 | *argv, strlen(*argv)); |
| 430 | argc--; argv++; |
| 431 | break; |
Vlad Dogaru | db02608 | 2011-02-02 20:23:41 +0200 | [diff] [blame] | 432 | } else if (strcmp(*argv, "group") == 0) { |
| 433 | NEXT_ARG(); |
| 434 | if (*group != -1) |
| 435 | duparg("group", *argv); |
| 436 | if (rtnl_group_a2n(group, *argv)) |
| 437 | invarg("Invalid \"group\" value\n", *argv); |
Stephen Hemminger | 8249928 | 2012-03-19 17:24:43 -0700 | [diff] [blame] | 438 | } else if (strcmp(*argv, "mode") == 0) { |
| 439 | int mode; |
| 440 | NEXT_ARG(); |
Stephen Hemminger | 4ccfb44 | 2012-04-05 15:10:19 -0700 | [diff] [blame] | 441 | mode = get_link_mode(*argv); |
Stephen Hemminger | 8249928 | 2012-03-19 17:24:43 -0700 | [diff] [blame] | 442 | if (mode < 0) |
| 443 | invarg("Invalid link mode\n", *argv); |
| 444 | addattr8(&req->n, sizeof(*req), IFLA_LINKMODE, mode); |
Stephen Hemminger | 4f2fdd4 | 2012-04-05 15:08:57 -0700 | [diff] [blame] | 445 | } else if (strcmp(*argv, "state") == 0) { |
| 446 | int state; |
| 447 | NEXT_ARG(); |
| 448 | state = get_operstate(*argv); |
| 449 | if (state < 0) |
| 450 | invarg("Invalid operstate\n", *argv); |
| 451 | |
| 452 | addattr8(&req->n, sizeof(*req), IFLA_OPERSTATE, state); |
Jiri Pirko | d992f3e | 2012-08-01 16:19:55 -0700 | [diff] [blame] | 453 | } else if (matches(*argv, "numtxqueues") == 0) { |
| 454 | NEXT_ARG(); |
| 455 | if (numtxqueues != -1) |
| 456 | duparg("numtxqueues", *argv); |
| 457 | if (get_integer(&numtxqueues, *argv, 0)) |
| 458 | invarg("Invalid \"numtxqueues\" value\n", *argv); |
| 459 | addattr_l(&req->n, sizeof(*req), IFLA_NUM_TX_QUEUES, |
| 460 | &numtxqueues, 4); |
| 461 | } else if (matches(*argv, "numrxqueues") == 0) { |
| 462 | NEXT_ARG(); |
| 463 | if (numrxqueues != -1) |
| 464 | duparg("numrxqueues", *argv); |
| 465 | if (get_integer(&numrxqueues, *argv, 0)) |
| 466 | invarg("Invalid \"numrxqueues\" value\n", *argv); |
| 467 | addattr_l(&req->n, sizeof(*req), IFLA_NUM_RX_QUEUES, |
| 468 | &numrxqueues, 4); |
Pavel Emelyanov | 909dfe2 | 2007-07-19 13:32:31 +0400 | [diff] [blame] | 469 | } else { |
| 470 | if (strcmp(*argv, "dev") == 0) { |
| 471 | NEXT_ARG(); |
| 472 | } |
Patrick McHardy | 0532555 | 2008-10-07 17:16:08 +0200 | [diff] [blame] | 473 | if (matches(*argv, "help") == 0) |
| 474 | usage(); |
Pavel Emelyanov | 909dfe2 | 2007-07-19 13:32:31 +0400 | [diff] [blame] | 475 | if (*dev) |
| 476 | duparg2("dev", *argv); |
| 477 | *dev = *argv; |
| 478 | } |
| 479 | argc--; argv++; |
| 480 | } |
| 481 | |
| 482 | return ret - argc; |
| 483 | } |
| 484 | |
| 485 | static int iplink_modify(int cmd, unsigned int flags, int argc, char **argv) |
| 486 | { |
Patrick McHardy | 1d93483 | 2007-08-22 10:49:01 -0700 | [diff] [blame] | 487 | int len; |
Patrick McHardy | 1d93483 | 2007-08-22 10:49:01 -0700 | [diff] [blame] | 488 | char *dev = NULL; |
| 489 | char *name = NULL; |
| 490 | char *link = NULL; |
| 491 | char *type = NULL; |
Vlad Dogaru | db02608 | 2011-02-02 20:23:41 +0200 | [diff] [blame] | 492 | int group; |
Patrick McHardy | 1d93483 | 2007-08-22 10:49:01 -0700 | [diff] [blame] | 493 | struct link_util *lu = NULL; |
Pavel Emelyanov | 909dfe2 | 2007-07-19 13:32:31 +0400 | [diff] [blame] | 494 | struct iplink_req req; |
| 495 | int ret; |
Patrick McHardy | 1d93483 | 2007-08-22 10:49:01 -0700 | [diff] [blame] | 496 | |
| 497 | memset(&req, 0, sizeof(req)); |
| 498 | |
| 499 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)); |
| 500 | req.n.nlmsg_flags = NLM_F_REQUEST|flags; |
| 501 | req.n.nlmsg_type = cmd; |
| 502 | req.i.ifi_family = preferred_family; |
| 503 | |
Vlad Dogaru | db02608 | 2011-02-02 20:23:41 +0200 | [diff] [blame] | 504 | ret = iplink_parse(argc, argv, &req, &name, &type, &link, &dev, &group); |
Pavel Emelyanov | 909dfe2 | 2007-07-19 13:32:31 +0400 | [diff] [blame] | 505 | if (ret < 0) |
| 506 | return ret; |
Patrick McHardy | 1d93483 | 2007-08-22 10:49:01 -0700 | [diff] [blame] | 507 | |
Pavel Emelyanov | 909dfe2 | 2007-07-19 13:32:31 +0400 | [diff] [blame] | 508 | argc -= ret; |
| 509 | argv += ret; |
Vlad Dogaru | db02608 | 2011-02-02 20:23:41 +0200 | [diff] [blame] | 510 | |
| 511 | if (group != -1) { |
| 512 | if (dev) |
| 513 | addattr_l(&req.n, sizeof(req), IFLA_GROUP, |
| 514 | &group, sizeof(group)); |
| 515 | else { |
| 516 | if (argc) { |
| 517 | fprintf(stderr, "Garbage instead of arguments " |
| 518 | "\"%s ...\". Try \"ip link " |
| 519 | "help\".\n", *argv); |
| 520 | return -1; |
| 521 | } |
| 522 | if (flags & NLM_F_CREATE) { |
| 523 | fprintf(stderr, "group cannot be used when " |
| 524 | "creating devices.\n"); |
| 525 | return -1; |
| 526 | } |
| 527 | |
| 528 | req.i.ifi_index = 0; |
| 529 | addattr32(&req.n, sizeof(req), IFLA_GROUP, group); |
Stephen Hemminger | cd70f3f | 2011-12-28 10:37:12 -0800 | [diff] [blame] | 530 | if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0) |
Vlad Dogaru | db02608 | 2011-02-02 20:23:41 +0200 | [diff] [blame] | 531 | exit(2); |
| 532 | return 0; |
| 533 | } |
| 534 | } |
| 535 | |
Patrick McHardy | 1d93483 | 2007-08-22 10:49:01 -0700 | [diff] [blame] | 536 | if (!(flags & NLM_F_CREATE)) { |
| 537 | if (!dev) { |
| 538 | fprintf(stderr, "Not enough information: \"dev\" " |
| 539 | "argument is required.\n"); |
| 540 | exit(-1); |
| 541 | } |
| 542 | |
| 543 | req.i.ifi_index = ll_name_to_index(dev); |
| 544 | if (req.i.ifi_index == 0) { |
| 545 | fprintf(stderr, "Cannot find device \"%s\"\n", dev); |
| 546 | return -1; |
| 547 | } |
| 548 | } else { |
| 549 | /* Allow "ip link add dev" and "ip link add name" */ |
| 550 | if (!name) |
| 551 | name = dev; |
| 552 | |
| 553 | if (link) { |
| 554 | int ifindex; |
| 555 | |
| 556 | ifindex = ll_name_to_index(link); |
| 557 | if (ifindex == 0) { |
| 558 | fprintf(stderr, "Cannot find device \"%s\"\n", |
| 559 | link); |
| 560 | return -1; |
| 561 | } |
| 562 | addattr_l(&req.n, sizeof(req), IFLA_LINK, &ifindex, 4); |
| 563 | } |
| 564 | } |
| 565 | |
| 566 | if (name) { |
| 567 | len = strlen(name) + 1; |
Patrick McHardy | ca78b0e | 2007-10-12 14:01:13 +0200 | [diff] [blame] | 568 | if (len == 1) |
| 569 | invarg("\"\" is not a valid device identifier\n", "name"); |
Patrick McHardy | 1d93483 | 2007-08-22 10:49:01 -0700 | [diff] [blame] | 570 | if (len > IFNAMSIZ) |
Patrick McHardy | ca78b0e | 2007-10-12 14:01:13 +0200 | [diff] [blame] | 571 | invarg("\"name\" too long\n", name); |
Patrick McHardy | 1d93483 | 2007-08-22 10:49:01 -0700 | [diff] [blame] | 572 | addattr_l(&req.n, sizeof(req), IFLA_IFNAME, name, len); |
| 573 | } |
| 574 | |
Stephen Hemminger | 09fa327 | 2012-03-14 10:24:25 -0700 | [diff] [blame] | 575 | if (type) { |
| 576 | struct rtattr *linkinfo = NLMSG_TAIL(&req.n); |
| 577 | addattr_l(&req.n, sizeof(req), IFLA_LINKINFO, NULL, 0); |
| 578 | addattr_l(&req.n, sizeof(req), IFLA_INFO_KIND, type, |
| 579 | strlen(type)); |
| 580 | |
| 581 | lu = get_link_kind(type); |
| 582 | if (lu && argc) { |
| 583 | struct rtattr * data = NLMSG_TAIL(&req.n); |
| 584 | addattr_l(&req.n, sizeof(req), IFLA_INFO_DATA, NULL, 0); |
| 585 | |
| 586 | if (lu->parse_opt && |
| 587 | lu->parse_opt(lu, argc, argv, &req.n)) |
| 588 | return -1; |
| 589 | |
| 590 | data->rta_len = (void *)NLMSG_TAIL(&req.n) - (void *)data; |
| 591 | } else if (argc) { |
| 592 | if (matches(*argv, "help") == 0) |
| 593 | usage(); |
| 594 | fprintf(stderr, "Garbage instead of arguments \"%s ...\". " |
| 595 | "Try \"ip link help\".\n", *argv); |
| 596 | return -1; |
| 597 | } |
| 598 | linkinfo->rta_len = (void *)NLMSG_TAIL(&req.n) - (void *)linkinfo; |
| 599 | } else if (flags & NLM_F_CREATE) { |
| 600 | fprintf(stderr, "Not enough information: \"type\" argument " |
| 601 | "is required\n"); |
| 602 | return -1; |
| 603 | } |
| 604 | |
Stephen Hemminger | cd70f3f | 2011-12-28 10:37:12 -0800 | [diff] [blame] | 605 | if (rtnl_talk(&rth, &req.n, 0, 0, NULL) < 0) |
Patrick McHardy | 1d93483 | 2007-08-22 10:49:01 -0700 | [diff] [blame] | 606 | exit(2); |
| 607 | |
| 608 | return 0; |
| 609 | } |
| 610 | |
| 611 | #if IPLINK_IOCTL_COMPAT |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 612 | static int get_ctl_fd(void) |
| 613 | { |
| 614 | int s_errno; |
| 615 | int fd; |
| 616 | |
| 617 | fd = socket(PF_INET, SOCK_DGRAM, 0); |
| 618 | if (fd >= 0) |
| 619 | return fd; |
| 620 | s_errno = errno; |
| 621 | fd = socket(PF_PACKET, SOCK_DGRAM, 0); |
| 622 | if (fd >= 0) |
| 623 | return fd; |
| 624 | fd = socket(PF_INET6, SOCK_DGRAM, 0); |
| 625 | if (fd >= 0) |
| 626 | return fd; |
| 627 | errno = s_errno; |
| 628 | perror("Cannot create control socket"); |
| 629 | return -1; |
| 630 | } |
| 631 | |
osdl.net!shemminger | 71058eb | 2004-09-01 17:15:45 +0000 | [diff] [blame] | 632 | static int do_chflags(const char *dev, __u32 flags, __u32 mask) |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 633 | { |
| 634 | struct ifreq ifr; |
| 635 | int fd; |
| 636 | int err; |
| 637 | |
osdl.net!shemminger | 71058eb | 2004-09-01 17:15:45 +0000 | [diff] [blame] | 638 | strncpy(ifr.ifr_name, dev, IFNAMSIZ); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 639 | fd = get_ctl_fd(); |
| 640 | if (fd < 0) |
| 641 | return -1; |
| 642 | err = ioctl(fd, SIOCGIFFLAGS, &ifr); |
| 643 | if (err) { |
| 644 | perror("SIOCGIFFLAGS"); |
| 645 | close(fd); |
| 646 | return -1; |
| 647 | } |
| 648 | if ((ifr.ifr_flags^flags)&mask) { |
| 649 | ifr.ifr_flags &= ~mask; |
| 650 | ifr.ifr_flags |= mask&flags; |
| 651 | err = ioctl(fd, SIOCSIFFLAGS, &ifr); |
| 652 | if (err) |
| 653 | perror("SIOCSIFFLAGS"); |
| 654 | } |
| 655 | close(fd); |
| 656 | return err; |
| 657 | } |
| 658 | |
osdl.net!shemminger | 71058eb | 2004-09-01 17:15:45 +0000 | [diff] [blame] | 659 | static int do_changename(const char *dev, const char *newdev) |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 660 | { |
| 661 | struct ifreq ifr; |
| 662 | int fd; |
| 663 | int err; |
| 664 | |
osdl.net!shemminger | 71058eb | 2004-09-01 17:15:45 +0000 | [diff] [blame] | 665 | strncpy(ifr.ifr_name, dev, IFNAMSIZ); |
| 666 | strncpy(ifr.ifr_newname, newdev, IFNAMSIZ); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 667 | fd = get_ctl_fd(); |
| 668 | if (fd < 0) |
| 669 | return -1; |
| 670 | err = ioctl(fd, SIOCSIFNAME, &ifr); |
| 671 | if (err) { |
| 672 | perror("SIOCSIFNAME"); |
| 673 | close(fd); |
| 674 | return -1; |
| 675 | } |
| 676 | close(fd); |
| 677 | return err; |
| 678 | } |
| 679 | |
osdl.net!shemminger | 71058eb | 2004-09-01 17:15:45 +0000 | [diff] [blame] | 680 | static int set_qlen(const char *dev, int qlen) |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 681 | { |
| 682 | struct ifreq ifr; |
| 683 | int s; |
| 684 | |
| 685 | s = get_ctl_fd(); |
| 686 | if (s < 0) |
| 687 | return -1; |
| 688 | |
| 689 | memset(&ifr, 0, sizeof(ifr)); |
Stephen Hemminger | ae665a5 | 2006-12-05 10:10:22 -0800 | [diff] [blame] | 690 | strncpy(ifr.ifr_name, dev, IFNAMSIZ); |
| 691 | ifr.ifr_qlen = qlen; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 692 | if (ioctl(s, SIOCSIFTXQLEN, &ifr) < 0) { |
| 693 | perror("SIOCSIFXQLEN"); |
| 694 | close(s); |
| 695 | return -1; |
| 696 | } |
| 697 | close(s); |
| 698 | |
Stephen Hemminger | ae665a5 | 2006-12-05 10:10:22 -0800 | [diff] [blame] | 699 | return 0; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 700 | } |
| 701 | |
osdl.net!shemminger | 71058eb | 2004-09-01 17:15:45 +0000 | [diff] [blame] | 702 | static int set_mtu(const char *dev, int mtu) |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 703 | { |
| 704 | struct ifreq ifr; |
| 705 | int s; |
| 706 | |
| 707 | s = get_ctl_fd(); |
| 708 | if (s < 0) |
| 709 | return -1; |
| 710 | |
| 711 | memset(&ifr, 0, sizeof(ifr)); |
Stephen Hemminger | ae665a5 | 2006-12-05 10:10:22 -0800 | [diff] [blame] | 712 | strncpy(ifr.ifr_name, dev, IFNAMSIZ); |
| 713 | ifr.ifr_mtu = mtu; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 714 | if (ioctl(s, SIOCSIFMTU, &ifr) < 0) { |
| 715 | perror("SIOCSIFMTU"); |
| 716 | close(s); |
| 717 | return -1; |
| 718 | } |
| 719 | close(s); |
| 720 | |
Stephen Hemminger | ae665a5 | 2006-12-05 10:10:22 -0800 | [diff] [blame] | 721 | return 0; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 722 | } |
| 723 | |
osdl.net!shemminger | 71058eb | 2004-09-01 17:15:45 +0000 | [diff] [blame] | 724 | static int get_address(const char *dev, int *htype) |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 725 | { |
| 726 | struct ifreq ifr; |
| 727 | struct sockaddr_ll me; |
shemminger | f332d16 | 2005-07-05 22:37:15 +0000 | [diff] [blame] | 728 | socklen_t alen; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 729 | int s; |
| 730 | |
| 731 | s = socket(PF_PACKET, SOCK_DGRAM, 0); |
Stephen Hemminger | ae665a5 | 2006-12-05 10:10:22 -0800 | [diff] [blame] | 732 | if (s < 0) { |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 733 | perror("socket(PF_PACKET)"); |
| 734 | return -1; |
| 735 | } |
| 736 | |
| 737 | memset(&ifr, 0, sizeof(ifr)); |
osdl.net!shemminger | 71058eb | 2004-09-01 17:15:45 +0000 | [diff] [blame] | 738 | strncpy(ifr.ifr_name, dev, IFNAMSIZ); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 739 | if (ioctl(s, SIOCGIFINDEX, &ifr) < 0) { |
| 740 | perror("SIOCGIFINDEX"); |
| 741 | close(s); |
| 742 | return -1; |
| 743 | } |
| 744 | |
| 745 | memset(&me, 0, sizeof(me)); |
| 746 | me.sll_family = AF_PACKET; |
| 747 | me.sll_ifindex = ifr.ifr_ifindex; |
| 748 | me.sll_protocol = htons(ETH_P_LOOP); |
| 749 | if (bind(s, (struct sockaddr*)&me, sizeof(me)) == -1) { |
| 750 | perror("bind"); |
| 751 | close(s); |
| 752 | return -1; |
| 753 | } |
| 754 | |
| 755 | alen = sizeof(me); |
| 756 | if (getsockname(s, (struct sockaddr*)&me, &alen) == -1) { |
| 757 | perror("getsockname"); |
| 758 | close(s); |
| 759 | return -1; |
| 760 | } |
| 761 | close(s); |
| 762 | *htype = me.sll_hatype; |
| 763 | return me.sll_halen; |
| 764 | } |
| 765 | |
Stephen Hemminger | ae665a5 | 2006-12-05 10:10:22 -0800 | [diff] [blame] | 766 | static int parse_address(const char *dev, int hatype, int halen, |
shemminger | 7b56575 | 2006-03-21 23:57:50 +0000 | [diff] [blame] | 767 | char *lla, struct ifreq *ifr) |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 768 | { |
| 769 | int alen; |
| 770 | |
| 771 | memset(ifr, 0, sizeof(*ifr)); |
osdl.net!shemminger | 71058eb | 2004-09-01 17:15:45 +0000 | [diff] [blame] | 772 | strncpy(ifr->ifr_name, dev, IFNAMSIZ); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 773 | ifr->ifr_hwaddr.sa_family = hatype; |
| 774 | alen = ll_addr_a2n(ifr->ifr_hwaddr.sa_data, 14, lla); |
| 775 | if (alen < 0) |
| 776 | return -1; |
| 777 | if (alen != halen) { |
| 778 | fprintf(stderr, "Wrong address (%s) length: expected %d bytes\n", lla, halen); |
| 779 | return -1; |
| 780 | } |
Stephen Hemminger | ae665a5 | 2006-12-05 10:10:22 -0800 | [diff] [blame] | 781 | return 0; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 782 | } |
| 783 | |
| 784 | static int set_address(struct ifreq *ifr, int brd) |
| 785 | { |
| 786 | int s; |
| 787 | |
| 788 | s = get_ctl_fd(); |
| 789 | if (s < 0) |
| 790 | return -1; |
| 791 | if (ioctl(s, brd?SIOCSIFHWBROADCAST:SIOCSIFHWADDR, ifr) < 0) { |
| 792 | perror(brd?"SIOCSIFHWBROADCAST":"SIOCSIFHWADDR"); |
| 793 | close(s); |
| 794 | return -1; |
| 795 | } |
| 796 | close(s); |
Stephen Hemminger | ae665a5 | 2006-12-05 10:10:22 -0800 | [diff] [blame] | 797 | return 0; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 798 | } |
| 799 | |
| 800 | |
| 801 | static int do_set(int argc, char **argv) |
| 802 | { |
| 803 | char *dev = NULL; |
| 804 | __u32 mask = 0; |
| 805 | __u32 flags = 0; |
| 806 | int qlen = -1; |
| 807 | int mtu = -1; |
| 808 | char *newaddr = NULL; |
| 809 | char *newbrd = NULL; |
| 810 | struct ifreq ifr0, ifr1; |
| 811 | char *newname = NULL; |
| 812 | int htype, halen; |
| 813 | |
| 814 | while (argc > 0) { |
| 815 | if (strcmp(*argv, "up") == 0) { |
| 816 | mask |= IFF_UP; |
| 817 | flags |= IFF_UP; |
| 818 | } else if (strcmp(*argv, "down") == 0) { |
| 819 | mask |= IFF_UP; |
| 820 | flags &= ~IFF_UP; |
| 821 | } else if (strcmp(*argv, "name") == 0) { |
| 822 | NEXT_ARG(); |
| 823 | newname = *argv; |
| 824 | } else if (matches(*argv, "address") == 0) { |
| 825 | NEXT_ARG(); |
| 826 | newaddr = *argv; |
| 827 | } else if (matches(*argv, "broadcast") == 0 || |
| 828 | strcmp(*argv, "brd") == 0) { |
| 829 | NEXT_ARG(); |
| 830 | newbrd = *argv; |
| 831 | } else if (matches(*argv, "txqueuelen") == 0 || |
| 832 | strcmp(*argv, "qlen") == 0 || |
| 833 | matches(*argv, "txqlen") == 0) { |
| 834 | NEXT_ARG(); |
| 835 | if (qlen != -1) |
| 836 | duparg("txqueuelen", *argv); |
| 837 | if (get_integer(&qlen, *argv, 0)) |
| 838 | invarg("Invalid \"txqueuelen\" value\n", *argv); |
| 839 | } else if (strcmp(*argv, "mtu") == 0) { |
| 840 | NEXT_ARG(); |
| 841 | if (mtu != -1) |
| 842 | duparg("mtu", *argv); |
| 843 | if (get_integer(&mtu, *argv, 0)) |
| 844 | invarg("Invalid \"mtu\" value\n", *argv); |
| 845 | } else if (strcmp(*argv, "multicast") == 0) { |
| 846 | NEXT_ARG(); |
| 847 | mask |= IFF_MULTICAST; |
| 848 | if (strcmp(*argv, "on") == 0) { |
| 849 | flags |= IFF_MULTICAST; |
| 850 | } else if (strcmp(*argv, "off") == 0) { |
| 851 | flags &= ~IFF_MULTICAST; |
| 852 | } else |
Kees van Reeuwijk | 14645ec | 2013-02-08 03:32:36 +0000 | [diff] [blame] | 853 | return on_off("multicast", *argv); |
net[shemminger]!shemminger | d27b1b5 | 2004-07-01 22:15:50 +0000 | [diff] [blame] | 854 | } else if (strcmp(*argv, "allmulticast") == 0) { |
| 855 | NEXT_ARG(); |
| 856 | mask |= IFF_ALLMULTI; |
| 857 | if (strcmp(*argv, "on") == 0) { |
| 858 | flags |= IFF_ALLMULTI; |
| 859 | } else if (strcmp(*argv, "off") == 0) { |
| 860 | flags &= ~IFF_ALLMULTI; |
| 861 | } else |
Kees van Reeuwijk | 14645ec | 2013-02-08 03:32:36 +0000 | [diff] [blame] | 862 | return on_off("allmulticast", *argv); |
net[shemminger]!shemminger | d27b1b5 | 2004-07-01 22:15:50 +0000 | [diff] [blame] | 863 | } else if (strcmp(*argv, "promisc") == 0) { |
| 864 | NEXT_ARG(); |
| 865 | mask |= IFF_PROMISC; |
| 866 | if (strcmp(*argv, "on") == 0) { |
| 867 | flags |= IFF_PROMISC; |
| 868 | } else if (strcmp(*argv, "off") == 0) { |
| 869 | flags &= ~IFF_PROMISC; |
| 870 | } else |
Kees van Reeuwijk | 14645ec | 2013-02-08 03:32:36 +0000 | [diff] [blame] | 871 | return on_off("promisc", *argv); |
net[shemminger]!shemminger | d27b1b5 | 2004-07-01 22:15:50 +0000 | [diff] [blame] | 872 | } else if (strcmp(*argv, "trailers") == 0) { |
| 873 | NEXT_ARG(); |
| 874 | mask |= IFF_NOTRAILERS; |
| 875 | if (strcmp(*argv, "off") == 0) { |
| 876 | flags |= IFF_NOTRAILERS; |
| 877 | } else if (strcmp(*argv, "on") == 0) { |
| 878 | flags &= ~IFF_NOTRAILERS; |
| 879 | } else |
Kees van Reeuwijk | 14645ec | 2013-02-08 03:32:36 +0000 | [diff] [blame] | 880 | return on_off("trailers", *argv); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 881 | } else if (strcmp(*argv, "arp") == 0) { |
| 882 | NEXT_ARG(); |
| 883 | mask |= IFF_NOARP; |
| 884 | if (strcmp(*argv, "on") == 0) { |
| 885 | flags &= ~IFF_NOARP; |
| 886 | } else if (strcmp(*argv, "off") == 0) { |
| 887 | flags |= IFF_NOARP; |
| 888 | } else |
Kees van Reeuwijk | 14645ec | 2013-02-08 03:32:36 +0000 | [diff] [blame] | 889 | return on_off("noarp", *argv); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 890 | } else if (matches(*argv, "dynamic") == 0) { |
| 891 | NEXT_ARG(); |
| 892 | mask |= IFF_DYNAMIC; |
| 893 | if (strcmp(*argv, "on") == 0) { |
| 894 | flags |= IFF_DYNAMIC; |
| 895 | } else if (strcmp(*argv, "off") == 0) { |
| 896 | flags &= ~IFF_DYNAMIC; |
| 897 | } else |
Kees van Reeuwijk | 14645ec | 2013-02-08 03:32:36 +0000 | [diff] [blame] | 898 | return on_off("dynamic", *argv); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 899 | } else { |
| 900 | if (strcmp(*argv, "dev") == 0) { |
| 901 | NEXT_ARG(); |
| 902 | } |
| 903 | if (matches(*argv, "help") == 0) |
| 904 | usage(); |
| 905 | if (dev) |
| 906 | duparg2("dev", *argv); |
| 907 | dev = *argv; |
| 908 | } |
| 909 | argc--; argv++; |
| 910 | } |
| 911 | |
| 912 | if (!dev) { |
| 913 | fprintf(stderr, "Not enough of information: \"dev\" argument is required.\n"); |
| 914 | exit(-1); |
| 915 | } |
| 916 | |
| 917 | if (newaddr || newbrd) { |
| 918 | halen = get_address(dev, &htype); |
| 919 | if (halen < 0) |
| 920 | return -1; |
| 921 | if (newaddr) { |
| 922 | if (parse_address(dev, htype, halen, newaddr, &ifr0) < 0) |
| 923 | return -1; |
| 924 | } |
| 925 | if (newbrd) { |
| 926 | if (parse_address(dev, htype, halen, newbrd, &ifr1) < 0) |
Stephen Hemminger | ae665a5 | 2006-12-05 10:10:22 -0800 | [diff] [blame] | 927 | return -1; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 928 | } |
| 929 | } |
| 930 | |
| 931 | if (newname && strcmp(dev, newname)) { |
Patrick McHardy | ca78b0e | 2007-10-12 14:01:13 +0200 | [diff] [blame] | 932 | if (strlen(newname) == 0) |
| 933 | invarg("\"\" is not a valid device identifier\n", "name"); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 934 | if (do_changename(dev, newname) < 0) |
| 935 | return -1; |
| 936 | dev = newname; |
| 937 | } |
Stephen Hemminger | ae665a5 | 2006-12-05 10:10:22 -0800 | [diff] [blame] | 938 | if (qlen != -1) { |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 939 | if (set_qlen(dev, qlen) < 0) |
Stephen Hemminger | ae665a5 | 2006-12-05 10:10:22 -0800 | [diff] [blame] | 940 | return -1; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 941 | } |
Stephen Hemminger | ae665a5 | 2006-12-05 10:10:22 -0800 | [diff] [blame] | 942 | if (mtu != -1) { |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 943 | if (set_mtu(dev, mtu) < 0) |
Stephen Hemminger | ae665a5 | 2006-12-05 10:10:22 -0800 | [diff] [blame] | 944 | return -1; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 945 | } |
| 946 | if (newaddr || newbrd) { |
| 947 | if (newbrd) { |
| 948 | if (set_address(&ifr1, 1) < 0) |
Stephen Hemminger | ae665a5 | 2006-12-05 10:10:22 -0800 | [diff] [blame] | 949 | return -1; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 950 | } |
| 951 | if (newaddr) { |
| 952 | if (set_address(&ifr0, 0) < 0) |
| 953 | return -1; |
| 954 | } |
| 955 | } |
| 956 | if (mask) |
| 957 | return do_chflags(dev, flags, mask); |
| 958 | return 0; |
| 959 | } |
Patrick McHardy | 1d93483 | 2007-08-22 10:49:01 -0700 | [diff] [blame] | 960 | #endif /* IPLINK_IOCTL_COMPAT */ |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 961 | |
| 962 | int do_iplink(int argc, char **argv) |
| 963 | { |
| 964 | if (argc > 0) { |
Patrick McHardy | 1d93483 | 2007-08-22 10:49:01 -0700 | [diff] [blame] | 965 | if (iplink_have_newlink()) { |
| 966 | if (matches(*argv, "add") == 0) |
| 967 | return iplink_modify(RTM_NEWLINK, |
| 968 | NLM_F_CREATE|NLM_F_EXCL, |
| 969 | argc-1, argv+1); |
| 970 | if (matches(*argv, "set") == 0 || |
| 971 | matches(*argv, "change") == 0) |
| 972 | return iplink_modify(RTM_NEWLINK, 0, |
| 973 | argc-1, argv+1); |
| 974 | if (matches(*argv, "replace") == 0) |
| 975 | return iplink_modify(RTM_NEWLINK, |
| 976 | NLM_F_CREATE|NLM_F_REPLACE, |
| 977 | argc-1, argv+1); |
| 978 | if (matches(*argv, "delete") == 0) |
| 979 | return iplink_modify(RTM_DELLINK, 0, |
| 980 | argc-1, argv+1); |
| 981 | } else { |
| 982 | #if IPLINK_IOCTL_COMPAT |
| 983 | if (matches(*argv, "set") == 0) |
| 984 | return do_set(argc-1, argv+1); |
| 985 | #endif |
| 986 | } |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 987 | if (matches(*argv, "show") == 0 || |
| 988 | matches(*argv, "lst") == 0 || |
| 989 | matches(*argv, "list") == 0) |
| 990 | return ipaddr_list_link(argc-1, argv+1); |
| 991 | if (matches(*argv, "help") == 0) |
| 992 | usage(); |
| 993 | } else |
| 994 | return ipaddr_list_link(0, NULL); |
| 995 | |
| 996 | fprintf(stderr, "Command \"%s\" is unknown, try \"ip link help\".\n", *argv); |
| 997 | exit(-1); |
| 998 | } |