projects / mirror_iproute2.git / blame
| Commit | Line | Data |
|---|---|---|
| 908755dc JL |
1 | /* |
| 2 | * iplink_geneve.c GENEVE 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: John W. Linville <linville@tuxdriver.com> | |
| 10 | */ | |
| 11 | ||
| 12 | #include <stdio.h> | |
| 13 | ||
| 14 | #include "utils.h" | |
| 15 | #include "ip_common.h" | |
| 16 | ||
| 17 | static void print_explain(FILE *f) | |
| 18 | { | |
| 19 | fprintf(f, "Usage: ... geneve id VNI remote ADDR\n"); | |
| 20 | fprintf(f, "\n"); | |
| 21 | fprintf(f, "Where: VNI := 0-16777215\n"); | |
| 22 | fprintf(f, " ADDR := IP_ADDRESS\n"); | |
| 23 | } | |
| 24 | ||
| 25 | static void explain(void) | |
| 26 | { | |
| 27 | print_explain(stderr); | |
| 28 | } | |
| 29 | ||
| 30 | static int geneve_parse_opt(struct link_util *lu, int argc, char **argv, | |
| 31 | struct nlmsghdr *n) | |
| 32 | { | |
| 33 | __u32 vni = 0; | |
| 34 | int vni_set = 0; | |
| 35 | __u32 daddr = 0; | |
| 36 | struct in6_addr daddr6 = IN6ADDR_ANY_INIT; | |
| 37 | ||
| 38 | ||
| 39 | while (argc > 0) { | |
| 40 | if (!matches(*argv, "id") || | |
| 41 | !matches(*argv, "vni")) { | |
| 42 | NEXT_ARG(); | |
| 43 | if (get_u32(&vni, *argv, 0) || | |
| 44 | vni >= 1u << 24) | |
| 45 | invarg("invalid id", *argv); | |
| 46 | vni_set = 1; | |
| 47 | } else if (!matches(*argv, "remote")) { | |
| 48 | NEXT_ARG(); | |
| 49 | if (!inet_get_addr(*argv, &daddr, &daddr6)) { | |
| 50 | fprintf(stderr, "Invalid address \"%s\"\n", *argv); | |
| 51 | return -1; | |
| 52 | } | |
| 53 | if (IN_MULTICAST(ntohl(daddr))) | |
| 54 | invarg("invalid remote address", *argv); | |
| 55 | } else if (matches(*argv, "help") == 0) { | |
| 56 | explain(); | |
| 57 | return -1; | |
| 58 | } else { | |
| 59 | fprintf(stderr, "geneve: unknown command \"%s\"?\n", *argv); | |
| 60 | explain(); | |
| 61 | return -1; | |
| 62 | } | |
| 63 | argc--, argv++; | |
| 64 | } | |
| 65 | ||
| 66 | if (!vni_set) { | |
| 67 | fprintf(stderr, "geneve: missing virtual network identifier\n"); | |
| 68 | return -1; | |
| 69 | } | |
| 70 | ||
| 71 | if (!daddr) { | |
| 72 | fprintf(stderr, "geneve: remove link partner not specified\n"); | |
| 73 | return -1; | |
| 74 | } | |
| 75 | if (memcmp(&daddr6, &in6addr_any, sizeof(daddr6)) != 0) { | |
| 76 | fprintf(stderr, "geneve: remove link over IPv6 not supported\n"); | |
| 77 | return -1; | |
| 78 | } | |
| 79 | ||
| 80 | addattr32(n, 1024, IFLA_GENEVE_ID, vni); | |
| 81 | if (daddr) | |
| 82 | addattr_l(n, 1024, IFLA_GENEVE_REMOTE, &daddr, 4); | |
| 83 | ||
| 84 | return 0; | |
| 85 | } | |
| 86 | ||
| 87 | static void geneve_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[]) | |
| 88 | { | |
| 89 | __u32 vni; | |
| 90 | char s1[1024]; | |
| 91 | ||
| 92 | if (!tb) | |
| 93 | return; | |
| 94 | ||
| 95 | if (!tb[IFLA_GENEVE_ID] || | |
| 96 | RTA_PAYLOAD(tb[IFLA_GENEVE_ID]) < sizeof(__u32)) | |
| 97 | return; | |
| 98 | ||
| 99 | vni = rta_getattr_u32(tb[IFLA_GENEVE_ID]); | |
| 100 | fprintf(f, "id %u ", vni); | |
| 101 | ||
| 102 | if (tb[IFLA_GENEVE_REMOTE]) { | |
| 103 | __be32 addr = rta_getattr_u32(tb[IFLA_GENEVE_REMOTE]); | |
| 104 | if (addr) | |
| 105 | fprintf(f, "remote %s ", | |
| 106 | format_host(AF_INET, 4, &addr, s1, sizeof(s1))); | |
| 107 | } | |
| 108 | } | |
| 109 | ||
| 110 | static void geneve_print_help(struct link_util *lu, int argc, char **argv, | |
| 111 | FILE *f) | |
| 112 | { | |
| 113 | print_explain(f); | |
| 114 | } | |
| 115 | ||
| 116 | struct link_util geneve_link_util = { | |
| 117 | .id = "geneve", | |
| 118 | .maxattr = IFLA_GENEVE_MAX, | |
| 119 | .parse_opt = geneve_parse_opt, | |
| 120 | .print_opt = geneve_print_opt, | |
| 121 | .print_help = geneve_print_help, | |
| 122 | }; |