osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 1 | /* |
| 2 | * f_route.c ROUTE filter. |
| 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> |
| 18 | #include <sys/socket.h> |
| 19 | #include <netinet/in.h> |
| 20 | #include <arpa/inet.h> |
| 21 | #include <string.h> |
| 22 | |
| 23 | #include "utils.h" |
| 24 | #include "rt_names.h" |
site!shemminger | c1027a7 | 2005-03-14 22:19:16 +0000 | [diff] [blame] | 25 | #include "tc_common.h" |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 26 | #include "tc_util.h" |
| 27 | |
| 28 | static void explain(void) |
| 29 | { |
| 30 | fprintf(stderr, "Usage: ... route [ from REALM | fromif TAG ] [ to REALM ]\n"); |
Phil Sutter | 0a83e1e | 2015-10-23 19:21:17 +0200 | [diff] [blame] | 31 | fprintf(stderr, " [ classid CLASSID ] [ action ACTION_SPEC ]\n"); |
Jamal Hadi Salim | 287bf3a | 2014-10-06 07:30:17 -0400 | [diff] [blame] | 32 | fprintf(stderr, " ACTION_SPEC := ... look at individual actions\n"); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 33 | fprintf(stderr, " CLASSID := X:Y\n"); |
PJ Waskiewicz | e9acc24 | 2008-02-13 03:49:09 -0800 | [diff] [blame] | 34 | fprintf(stderr, "\nNOTE: CLASSID is parsed as hexadecimal input.\n"); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 35 | } |
| 36 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 37 | static int route_parse_opt(struct filter_util *qu, char *handle, int argc, char **argv, struct nlmsghdr *n) |
| 38 | { |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 39 | struct tcmsg *t = NLMSG_DATA(n); |
| 40 | struct rtattr *tail; |
| 41 | __u32 fh = 0xFFFF8000; |
| 42 | __u32 order = 0; |
| 43 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 44 | if (handle) { |
| 45 | if (get_u32(&t->tcm_handle, handle, 0)) { |
| 46 | fprintf(stderr, "Illegal \"handle\"\n"); |
| 47 | return -1; |
| 48 | } |
| 49 | } |
| 50 | |
| 51 | if (argc == 0) |
| 52 | return 0; |
| 53 | |
4!tgraf | 228569c | 2005-01-18 01:24:18 +0000 | [diff] [blame] | 54 | tail = NLMSG_TAIL(n); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 55 | addattr_l(n, 4096, TCA_OPTIONS, NULL, 0); |
| 56 | |
| 57 | while (argc > 0) { |
| 58 | if (matches(*argv, "to") == 0) { |
| 59 | __u32 id; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 60 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 61 | NEXT_ARG(); |
| 62 | if (rtnl_rtrealm_a2n(&id, *argv)) { |
| 63 | fprintf(stderr, "Illegal \"to\"\n"); |
| 64 | return -1; |
| 65 | } |
| 66 | addattr_l(n, 4096, TCA_ROUTE4_TO, &id, 4); |
| 67 | fh &= ~0x80FF; |
| 68 | fh |= id&0xFF; |
| 69 | } else if (matches(*argv, "from") == 0) { |
| 70 | __u32 id; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 71 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 72 | NEXT_ARG(); |
| 73 | if (rtnl_rtrealm_a2n(&id, *argv)) { |
| 74 | fprintf(stderr, "Illegal \"from\"\n"); |
| 75 | return -1; |
| 76 | } |
| 77 | addattr_l(n, 4096, TCA_ROUTE4_FROM, &id, 4); |
| 78 | fh &= 0xFFFF; |
| 79 | fh |= id<<16; |
| 80 | } else if (matches(*argv, "fromif") == 0) { |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 81 | __u32 id; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 82 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 83 | NEXT_ARG(); |
site!shemminger | c1027a7 | 2005-03-14 22:19:16 +0000 | [diff] [blame] | 84 | ll_init_map(&rth); |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 85 | if ((id = ll_name_to_index(*argv)) <= 0) { |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 86 | fprintf(stderr, "Illegal \"fromif\"\n"); |
| 87 | return -1; |
| 88 | } |
| 89 | addattr_l(n, 4096, TCA_ROUTE4_IIF, &id, 4); |
| 90 | fh &= 0xFFFF; |
| 91 | fh |= (0x8000|id)<<16; |
| 92 | } else if (matches(*argv, "classid") == 0 || |
| 93 | strcmp(*argv, "flowid") == 0) { |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 94 | unsigned int handle; |
| 95 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 96 | NEXT_ARG(); |
| 97 | if (get_tc_classid(&handle, *argv)) { |
| 98 | fprintf(stderr, "Illegal \"classid\"\n"); |
| 99 | return -1; |
| 100 | } |
| 101 | addattr_l(n, 4096, TCA_ROUTE4_CLASSID, &handle, 4); |
| 102 | } else if (matches(*argv, "police") == 0) { |
| 103 | NEXT_ARG(); |
| 104 | if (parse_police(&argc, &argv, TCA_ROUTE4_POLICE, n)) { |
| 105 | fprintf(stderr, "Illegal \"police\"\n"); |
| 106 | return -1; |
| 107 | } |
| 108 | continue; |
Jamal Hadi Salim | 287bf3a | 2014-10-06 07:30:17 -0400 | [diff] [blame] | 109 | } else if (matches(*argv, "action") == 0) { |
| 110 | NEXT_ARG(); |
| 111 | if (parse_action(&argc, &argv, TCA_ROUTE4_ACT, n)) { |
| 112 | fprintf(stderr, "Illegal \"action\"\n"); |
| 113 | return -1; |
| 114 | } |
| 115 | continue; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 116 | } else if (matches(*argv, "order") == 0) { |
| 117 | NEXT_ARG(); |
| 118 | if (get_u32(&order, *argv, 0)) { |
| 119 | fprintf(stderr, "Illegal \"order\"\n"); |
| 120 | return -1; |
| 121 | } |
| 122 | } else if (strcmp(*argv, "help") == 0) { |
| 123 | explain(); |
| 124 | return -1; |
| 125 | } else { |
| 126 | fprintf(stderr, "What is \"%s\"?\n", *argv); |
| 127 | explain(); |
| 128 | return -1; |
| 129 | } |
| 130 | argc--; argv++; |
| 131 | } |
4!tgraf | 228569c | 2005-01-18 01:24:18 +0000 | [diff] [blame] | 132 | tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 133 | if (order) { |
| 134 | fh &= ~0x7F00; |
| 135 | fh |= (order<<8)&0x7F00; |
| 136 | } |
| 137 | if (!t->tcm_handle) |
| 138 | t->tcm_handle = fh; |
| 139 | return 0; |
| 140 | } |
| 141 | |
| 142 | static int route_print_opt(struct filter_util *qu, FILE *f, struct rtattr *opt, __u32 handle) |
| 143 | { |
| 144 | struct rtattr *tb[TCA_ROUTE4_MAX+1]; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 145 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 146 | SPRINT_BUF(b1); |
| 147 | |
| 148 | if (opt == NULL) |
| 149 | return 0; |
| 150 | |
4!tgraf | 3b3ecd3 | 2005-01-18 22:11:58 +0000 | [diff] [blame] | 151 | parse_rtattr_nested(tb, TCA_ROUTE4_MAX, opt); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 152 | |
| 153 | if (handle) |
| 154 | fprintf(f, "fh 0x%08x ", handle); |
| 155 | if (handle&0x7F00) |
| 156 | fprintf(f, "order %d ", (handle>>8)&0x7F); |
| 157 | |
| 158 | if (tb[TCA_ROUTE4_CLASSID]) { |
| 159 | SPRINT_BUF(b1); |
Stephen Hemminger | ff24746 | 2012-04-10 08:47:55 -0700 | [diff] [blame] | 160 | fprintf(f, "flowid %s ", sprint_tc_classid(rta_getattr_u32(tb[TCA_ROUTE4_CLASSID]), b1)); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 161 | } |
| 162 | if (tb[TCA_ROUTE4_TO]) |
Stephen Hemminger | ff24746 | 2012-04-10 08:47:55 -0700 | [diff] [blame] | 163 | fprintf(f, "to %s ", rtnl_rtrealm_n2a(rta_getattr_u32(tb[TCA_ROUTE4_TO]), b1, sizeof(b1))); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 164 | if (tb[TCA_ROUTE4_FROM]) |
Stephen Hemminger | ff24746 | 2012-04-10 08:47:55 -0700 | [diff] [blame] | 165 | fprintf(f, "from %s ", rtnl_rtrealm_n2a(rta_getattr_u32(tb[TCA_ROUTE4_FROM]), b1, sizeof(b1))); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 166 | if (tb[TCA_ROUTE4_IIF]) |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 167 | fprintf(f, "fromif %s", ll_index_to_name(*(int *)RTA_DATA(tb[TCA_ROUTE4_IIF]))); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 168 | if (tb[TCA_ROUTE4_POLICE]) |
| 169 | tc_print_police(f, tb[TCA_ROUTE4_POLICE]); |
Jamal Hadi Salim | 287bf3a | 2014-10-06 07:30:17 -0400 | [diff] [blame] | 170 | if (tb[TCA_ROUTE4_ACT]) |
| 171 | tc_print_action(f, tb[TCA_ROUTE4_ACT]); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 172 | return 0; |
| 173 | } |
| 174 | |
osdl.net!shemminger | 6b7dff1 | 2004-09-28 18:35:49 +0000 | [diff] [blame] | 175 | struct filter_util route_filter_util = { |
| 176 | .id = "route", |
| 177 | .parse_fopt = route_parse_opt, |
| 178 | .print_fopt = route_print_opt, |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 179 | }; |