Stephen Hemminger | a5494df | 2012-09-24 12:48:29 -0700 | [diff] [blame] | 1 | /* |
| 2 | * iplink_vxlan.c VXLAN device support |
| 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: Stephen Hemminger <shemminger@vyatta.com |
| 10 | */ |
| 11 | |
| 12 | #include <stdio.h> |
| 13 | #include <stdlib.h> |
| 14 | #include <string.h> |
| 15 | #include <net/if.h> |
| 16 | #include <linux/ip.h> |
| 17 | #include <linux/if_link.h> |
| 18 | #include <arpa/inet.h> |
| 19 | |
| 20 | #include "rt_names.h" |
| 21 | #include "utils.h" |
| 22 | #include "ip_common.h" |
| 23 | |
| 24 | static void explain(void) |
| 25 | { |
| 26 | fprintf(stderr, "Usage: ... vxlan id VNI [ group ADDR ] [ local ADDR ]\n"); |
Stephen Hemminger | 2d59612 | 2012-10-09 23:39:17 -0700 | [diff] [blame] | 27 | fprintf(stderr, " [ ttl TTL ] [ tos TOS ] [ dev PHYS_DEV ]\n"); |
Stephen Hemminger | d85e0a5 | 2013-05-03 13:18:45 -0700 | [diff] [blame] | 28 | fprintf(stderr, " [ dstport PORT ] [ srcport MIN MAX ]\n"); |
| 29 | fprintf(stderr, " [ [no]learning ] [ [no]proxy ] [ [no]rsc ]\n"); |
David L Stevens | 1556e29 | 2012-12-12 10:02:19 -0800 | [diff] [blame] | 30 | fprintf(stderr, " [ [no]l2miss ] [ [no]l3miss ]\n"); |
Stephen Hemminger | a5494df | 2012-09-24 12:48:29 -0700 | [diff] [blame] | 31 | fprintf(stderr, "\n"); |
| 32 | fprintf(stderr, "Where: VNI := 0-16777215\n"); |
| 33 | fprintf(stderr, " ADDR := { IP_ADDRESS | any }\n"); |
| 34 | fprintf(stderr, " TOS := { NUMBER | inherit }\n"); |
| 35 | fprintf(stderr, " TTL := { 1..255 | inherit }\n"); |
| 36 | } |
| 37 | |
| 38 | static int vxlan_parse_opt(struct link_util *lu, int argc, char **argv, |
| 39 | struct nlmsghdr *n) |
| 40 | { |
| 41 | __u32 vni = 0; |
| 42 | int vni_set = 0; |
| 43 | __u32 saddr = 0; |
| 44 | __u32 gaddr = 0; |
| 45 | unsigned link = 0; |
| 46 | __u8 tos = 0; |
| 47 | __u8 ttl = 0; |
| 48 | __u8 learning = 1; |
David L Stevens | 1556e29 | 2012-12-12 10:02:19 -0800 | [diff] [blame] | 49 | __u8 proxy = 0; |
| 50 | __u8 rsc = 0; |
| 51 | __u8 l2miss = 0; |
| 52 | __u8 l3miss = 0; |
Stephen Hemminger | a5494df | 2012-09-24 12:48:29 -0700 | [diff] [blame] | 53 | __u8 noage = 0; |
| 54 | __u32 age = 0; |
| 55 | __u32 maxaddr = 0; |
Stephen Hemminger | 2a126a8 | 2013-05-15 13:41:49 -0700 | [diff] [blame^] | 56 | __u16 dstport = 0; |
| 57 | int dst_port_set = 0; |
Stephen Hemminger | 2d59612 | 2012-10-09 23:39:17 -0700 | [diff] [blame] | 58 | struct ifla_vxlan_port_range range = { 0, 0 }; |
Stephen Hemminger | a5494df | 2012-09-24 12:48:29 -0700 | [diff] [blame] | 59 | |
| 60 | while (argc > 0) { |
| 61 | if (!matches(*argv, "id") || |
| 62 | !matches(*argv, "vni")) { |
| 63 | NEXT_ARG(); |
| 64 | if (get_u32(&vni, *argv, 0) || |
| 65 | vni >= 1u << 24) |
| 66 | invarg("invalid id", *argv); |
| 67 | vni_set = 1; |
| 68 | } else if (!matches(*argv, "group")) { |
| 69 | NEXT_ARG(); |
| 70 | gaddr = get_addr32(*argv); |
| 71 | |
| 72 | if (!IN_MULTICAST(ntohl(gaddr))) |
| 73 | invarg("invald group address", *argv); |
| 74 | } else if (!matches(*argv, "local")) { |
| 75 | NEXT_ARG(); |
| 76 | if (strcmp(*argv, "any")) |
| 77 | saddr = get_addr32(*argv); |
| 78 | if (IN_MULTICAST(ntohl(saddr))) |
| 79 | invarg("invalid local address", *argv); |
| 80 | } else if (!matches(*argv, "dev")) { |
| 81 | NEXT_ARG(); |
| 82 | link = if_nametoindex(*argv); |
| 83 | if (link == 0) |
| 84 | exit(-1); |
| 85 | } else if (!matches(*argv, "ttl") || |
| 86 | !matches(*argv, "hoplimit")) { |
| 87 | unsigned uval; |
| 88 | |
| 89 | NEXT_ARG(); |
| 90 | if (strcmp(*argv, "inherit") != 0) { |
| 91 | if (get_unsigned(&uval, *argv, 0)) |
Stephen Hemminger | 2d59612 | 2012-10-09 23:39:17 -0700 | [diff] [blame] | 92 | invarg("invalid TTL", *argv); |
Stephen Hemminger | a5494df | 2012-09-24 12:48:29 -0700 | [diff] [blame] | 93 | if (uval > 255) |
Stephen Hemminger | 2d59612 | 2012-10-09 23:39:17 -0700 | [diff] [blame] | 94 | invarg("TTL must be <= 255", *argv); |
Stephen Hemminger | a5494df | 2012-09-24 12:48:29 -0700 | [diff] [blame] | 95 | ttl = uval; |
| 96 | } |
| 97 | } else if (!matches(*argv, "tos") || |
| 98 | !matches(*argv, "dsfield")) { |
| 99 | __u32 uval; |
| 100 | |
| 101 | NEXT_ARG(); |
| 102 | if (strcmp(*argv, "inherit") != 0) { |
| 103 | if (rtnl_dsfield_a2n(&uval, *argv)) |
| 104 | invarg("bad TOS value", *argv); |
| 105 | tos = uval; |
| 106 | } else |
| 107 | tos = 1; |
| 108 | } else if (!matches(*argv, "ageing")) { |
| 109 | NEXT_ARG(); |
| 110 | if (strcmp(*argv, "none") == 0) |
| 111 | noage = 1; |
| 112 | else if (get_u32(&age, *argv, 0)) |
Stephen Hemminger | 2d59612 | 2012-10-09 23:39:17 -0700 | [diff] [blame] | 113 | invarg("ageing timer", *argv); |
Stephen Hemminger | a5494df | 2012-09-24 12:48:29 -0700 | [diff] [blame] | 114 | } else if (!matches(*argv, "maxaddress")) { |
| 115 | NEXT_ARG(); |
| 116 | if (strcmp(*argv, "unlimited") == 0) |
| 117 | maxaddr = 0; |
| 118 | else if (get_u32(&maxaddr, *argv, 0)) |
Stephen Hemminger | 2d59612 | 2012-10-09 23:39:17 -0700 | [diff] [blame] | 119 | invarg("max addresses", *argv); |
Stephen Hemminger | d85e0a5 | 2013-05-03 13:18:45 -0700 | [diff] [blame] | 120 | } else if (!matches(*argv, "port") || |
| 121 | !matches(*argv, "srcport")) { |
Stephen Hemminger | 2d59612 | 2012-10-09 23:39:17 -0700 | [diff] [blame] | 122 | __u16 minport, maxport; |
| 123 | NEXT_ARG(); |
| 124 | if (get_u16(&minport, *argv, 0)) |
| 125 | invarg("min port", *argv); |
| 126 | NEXT_ARG(); |
| 127 | if (get_u16(&maxport, *argv, 0)) |
| 128 | invarg("max port", *argv); |
| 129 | range.low = htons(minport); |
| 130 | range.high = htons(maxport); |
Stephen Hemminger | d85e0a5 | 2013-05-03 13:18:45 -0700 | [diff] [blame] | 131 | } else if (!matches(*argv, "dstport")){ |
| 132 | NEXT_ARG(); |
| 133 | if (get_u16(&dstport, *argv, 0)) |
| 134 | invarg("dst port", *argv); |
Stephen Hemminger | 2a126a8 | 2013-05-15 13:41:49 -0700 | [diff] [blame^] | 135 | dst_port_set = 1; |
Stephen Hemminger | a5494df | 2012-09-24 12:48:29 -0700 | [diff] [blame] | 136 | } else if (!matches(*argv, "nolearning")) { |
| 137 | learning = 0; |
| 138 | } else if (!matches(*argv, "learning")) { |
| 139 | learning = 1; |
David L Stevens | 1556e29 | 2012-12-12 10:02:19 -0800 | [diff] [blame] | 140 | } else if (!matches(*argv, "noproxy")) { |
| 141 | proxy = 0; |
| 142 | } else if (!matches(*argv, "proxy")) { |
| 143 | proxy = 1; |
| 144 | } else if (!matches(*argv, "norsc")) { |
| 145 | rsc = 0; |
| 146 | } else if (!matches(*argv, "rsc")) { |
| 147 | rsc = 1; |
| 148 | } else if (!matches(*argv, "nol2miss")) { |
| 149 | l2miss = 0; |
| 150 | } else if (!matches(*argv, "l2miss")) { |
| 151 | l2miss = 1; |
| 152 | } else if (!matches(*argv, "nol3miss")) { |
| 153 | l3miss = 0; |
| 154 | } else if (!matches(*argv, "l3miss")) { |
| 155 | l3miss = 1; |
Stephen Hemminger | a5494df | 2012-09-24 12:48:29 -0700 | [diff] [blame] | 156 | } else if (matches(*argv, "help") == 0) { |
| 157 | explain(); |
| 158 | return -1; |
| 159 | } else { |
Kees van Reeuwijk | 14645ec | 2013-02-08 03:32:36 +0000 | [diff] [blame] | 160 | fprintf(stderr, "vxlan: unknown command \"%s\"?\n", *argv); |
Stephen Hemminger | a5494df | 2012-09-24 12:48:29 -0700 | [diff] [blame] | 161 | explain(); |
| 162 | return -1; |
| 163 | } |
| 164 | argc--, argv++; |
| 165 | } |
Stephen Hemminger | 2a126a8 | 2013-05-15 13:41:49 -0700 | [diff] [blame^] | 166 | |
Stephen Hemminger | a5494df | 2012-09-24 12:48:29 -0700 | [diff] [blame] | 167 | if (!vni_set) { |
| 168 | fprintf(stderr, "vxlan: missing virtual network identifier\n"); |
| 169 | return -1; |
| 170 | } |
Stephen Hemminger | 2a126a8 | 2013-05-15 13:41:49 -0700 | [diff] [blame^] | 171 | |
| 172 | if (!dst_port_set) { |
| 173 | fprintf(stderr, "vxlan: destination port not specified\n" |
| 174 | "Will use Linux kernel default (non-standard value)\n"); |
| 175 | fprintf(stderr, |
| 176 | "Use 'dstport 4789' to get the IANA assigned value\n" |
| 177 | "Use 'dstport 0' to get default and quiet this message\n"); |
| 178 | } |
| 179 | |
Stephen Hemminger | a5494df | 2012-09-24 12:48:29 -0700 | [diff] [blame] | 180 | addattr32(n, 1024, IFLA_VXLAN_ID, vni); |
Stephen Hemminger | b64da5a | 2012-10-19 13:25:17 -0700 | [diff] [blame] | 181 | if (gaddr) |
| 182 | addattr_l(n, 1024, IFLA_VXLAN_GROUP, &gaddr, 4); |
| 183 | if (saddr) |
| 184 | addattr_l(n, 1024, IFLA_VXLAN_LOCAL, &saddr, 4); |
Stephen Hemminger | a5494df | 2012-09-24 12:48:29 -0700 | [diff] [blame] | 185 | if (link) |
| 186 | addattr32(n, 1024, IFLA_VXLAN_LINK, link); |
| 187 | addattr8(n, 1024, IFLA_VXLAN_TTL, ttl); |
| 188 | addattr8(n, 1024, IFLA_VXLAN_TOS, tos); |
| 189 | addattr8(n, 1024, IFLA_VXLAN_LEARNING, learning); |
David L Stevens | 1556e29 | 2012-12-12 10:02:19 -0800 | [diff] [blame] | 190 | addattr8(n, 1024, IFLA_VXLAN_PROXY, proxy); |
| 191 | addattr8(n, 1024, IFLA_VXLAN_RSC, rsc); |
| 192 | addattr8(n, 1024, IFLA_VXLAN_L2MISS, l2miss); |
| 193 | addattr8(n, 1024, IFLA_VXLAN_L3MISS, l3miss); |
Stephen Hemminger | 2a126a8 | 2013-05-15 13:41:49 -0700 | [diff] [blame^] | 194 | |
Stephen Hemminger | a5494df | 2012-09-24 12:48:29 -0700 | [diff] [blame] | 195 | if (noage) |
| 196 | addattr32(n, 1024, IFLA_VXLAN_AGEING, 0); |
| 197 | else if (age) |
| 198 | addattr32(n, 1024, IFLA_VXLAN_AGEING, age); |
| 199 | if (maxaddr) |
| 200 | addattr32(n, 1024, IFLA_VXLAN_LIMIT, maxaddr); |
Stephen Hemminger | 2d59612 | 2012-10-09 23:39:17 -0700 | [diff] [blame] | 201 | if (range.low || range.high) |
| 202 | addattr_l(n, 1024, IFLA_VXLAN_PORT_RANGE, |
| 203 | &range, sizeof(range)); |
Stephen Hemminger | d85e0a5 | 2013-05-03 13:18:45 -0700 | [diff] [blame] | 204 | if (dstport) |
| 205 | addattr16(n, 1024, IFLA_VXLAN_PORT, htons(dstport)); |
Stephen Hemminger | a5494df | 2012-09-24 12:48:29 -0700 | [diff] [blame] | 206 | |
| 207 | return 0; |
| 208 | } |
| 209 | |
| 210 | static void vxlan_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[]) |
| 211 | { |
| 212 | __u32 vni; |
| 213 | unsigned link; |
Stephen Hemminger | 2d59612 | 2012-10-09 23:39:17 -0700 | [diff] [blame] | 214 | __u8 tos; |
| 215 | __u32 maxaddr; |
Stephen Hemminger | a5494df | 2012-09-24 12:48:29 -0700 | [diff] [blame] | 216 | char s1[1024]; |
| 217 | char s2[64]; |
| 218 | |
| 219 | if (!tb) |
| 220 | return; |
| 221 | |
| 222 | if (!tb[IFLA_VXLAN_ID] || |
| 223 | RTA_PAYLOAD(tb[IFLA_VXLAN_ID]) < sizeof(__u32)) |
| 224 | return; |
| 225 | |
| 226 | vni = rta_getattr_u32(tb[IFLA_VXLAN_ID]); |
| 227 | fprintf(f, "id %u ", vni); |
| 228 | |
| 229 | if (tb[IFLA_VXLAN_GROUP]) { |
Stephen Hemminger | b64da5a | 2012-10-19 13:25:17 -0700 | [diff] [blame] | 230 | __be32 addr = rta_getattr_u32(tb[IFLA_VXLAN_GROUP]); |
Stephen Hemminger | a5494df | 2012-09-24 12:48:29 -0700 | [diff] [blame] | 231 | if (addr) |
| 232 | fprintf(f, "group %s ", |
| 233 | format_host(AF_INET, 4, &addr, s1, sizeof(s1))); |
| 234 | } |
| 235 | |
| 236 | if (tb[IFLA_VXLAN_LOCAL]) { |
Stephen Hemminger | b64da5a | 2012-10-19 13:25:17 -0700 | [diff] [blame] | 237 | __be32 addr = rta_getattr_u32(tb[IFLA_VXLAN_LOCAL]); |
Stephen Hemminger | a5494df | 2012-09-24 12:48:29 -0700 | [diff] [blame] | 238 | if (addr) |
David L Stevens | 1556e29 | 2012-12-12 10:02:19 -0800 | [diff] [blame] | 239 | fprintf(f, "local %s ", |
Stephen Hemminger | a5494df | 2012-09-24 12:48:29 -0700 | [diff] [blame] | 240 | format_host(AF_INET, 4, &addr, s1, sizeof(s1))); |
| 241 | } |
| 242 | |
| 243 | if (tb[IFLA_VXLAN_LINK] && |
| 244 | (link = rta_getattr_u32(tb[IFLA_VXLAN_LINK]))) { |
| 245 | const char *n = if_indextoname(link, s2); |
| 246 | |
| 247 | if (n) |
| 248 | fprintf(f, "dev %s ", n); |
| 249 | else |
| 250 | fprintf(f, "dev %u ", link); |
| 251 | } |
| 252 | |
Stephen Hemminger | 2d59612 | 2012-10-09 23:39:17 -0700 | [diff] [blame] | 253 | if (tb[IFLA_VXLAN_PORT_RANGE]) { |
| 254 | const struct ifla_vxlan_port_range *r |
| 255 | = RTA_DATA(tb[IFLA_VXLAN_PORT_RANGE]); |
Stephen Hemminger | d85e0a5 | 2013-05-03 13:18:45 -0700 | [diff] [blame] | 256 | fprintf(f, "srcport %u %u ", ntohs(r->low), ntohs(r->high)); |
David L Stevens | 1556e29 | 2012-12-12 10:02:19 -0800 | [diff] [blame] | 257 | } |
Stephen Hemminger | 2d59612 | 2012-10-09 23:39:17 -0700 | [diff] [blame] | 258 | |
Stephen Hemminger | d85e0a5 | 2013-05-03 13:18:45 -0700 | [diff] [blame] | 259 | if (tb[IFLA_VXLAN_PORT]) |
| 260 | fprintf(f, "dstport %u ", |
| 261 | ntohs(rta_getattr_u16(tb[IFLA_VXLAN_PORT]))); |
| 262 | |
Stephen Hemminger | a5494df | 2012-09-24 12:48:29 -0700 | [diff] [blame] | 263 | if (tb[IFLA_VXLAN_LEARNING] && |
| 264 | !rta_getattr_u8(tb[IFLA_VXLAN_LEARNING])) |
| 265 | fputs("nolearning ", f); |
David L Stevens | 1556e29 | 2012-12-12 10:02:19 -0800 | [diff] [blame] | 266 | |
| 267 | if (tb[IFLA_VXLAN_PROXY] && rta_getattr_u8(tb[IFLA_VXLAN_PROXY])) |
| 268 | fputs("proxy ", f); |
| 269 | |
| 270 | if (tb[IFLA_VXLAN_RSC] && rta_getattr_u8(tb[IFLA_VXLAN_RSC])) |
| 271 | fputs("rsc ", f); |
| 272 | |
| 273 | if (tb[IFLA_VXLAN_L2MISS] && rta_getattr_u8(tb[IFLA_VXLAN_L2MISS])) |
| 274 | fputs("l2miss ", f); |
| 275 | |
| 276 | if (tb[IFLA_VXLAN_L3MISS] && rta_getattr_u8(tb[IFLA_VXLAN_L3MISS])) |
| 277 | fputs("l3miss ", f); |
| 278 | |
Stephen Hemminger | 2d59612 | 2012-10-09 23:39:17 -0700 | [diff] [blame] | 279 | if (tb[IFLA_VXLAN_TOS] && |
| 280 | (tos = rta_getattr_u8(tb[IFLA_VXLAN_TOS]))) { |
Stephen Hemminger | a5494df | 2012-09-24 12:48:29 -0700 | [diff] [blame] | 281 | if (tos == 1) |
| 282 | fprintf(f, "tos inherit "); |
| 283 | else |
| 284 | fprintf(f, "tos %#x ", tos); |
| 285 | } |
| 286 | |
| 287 | if (tb[IFLA_VXLAN_TTL]) { |
| 288 | __u8 ttl = rta_getattr_u8(tb[IFLA_VXLAN_TTL]); |
| 289 | if (ttl) |
| 290 | fprintf(f, "ttl %d ", ttl); |
| 291 | } |
| 292 | |
| 293 | if (tb[IFLA_VXLAN_AGEING]) { |
| 294 | __u32 age = rta_getattr_u32(tb[IFLA_VXLAN_AGEING]); |
| 295 | if (age == 0) |
| 296 | fprintf(f, "ageing none "); |
| 297 | else |
| 298 | fprintf(f, "ageing %u ", age); |
| 299 | } |
Stephen Hemminger | 2d59612 | 2012-10-09 23:39:17 -0700 | [diff] [blame] | 300 | |
| 301 | if (tb[IFLA_VXLAN_LIMIT] && |
| 302 | (maxaddr = rta_getattr_u32(tb[IFLA_VXLAN_LIMIT]) != 0)) |
| 303 | fprintf(f, "maxaddr %u ", maxaddr); |
Stephen Hemminger | a5494df | 2012-09-24 12:48:29 -0700 | [diff] [blame] | 304 | } |
| 305 | |
| 306 | struct link_util vxlan_link_util = { |
| 307 | .id = "vxlan", |
| 308 | .maxattr = IFLA_VXLAN_MAX, |
| 309 | .parse_opt = vxlan_parse_opt, |
| 310 | .print_opt = vxlan_print_opt, |
| 311 | }; |