osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 1 | /* |
| 2 | * tc_filter.c "tc 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> |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 18 | #include <sys/socket.h> |
| 19 | #include <netinet/in.h> |
| 20 | #include <arpa/inet.h> |
| 21 | #include <string.h> |
| 22 | #include <linux/if_ether.h> |
| 23 | |
| 24 | #include "rt_names.h" |
| 25 | #include "utils.h" |
| 26 | #include "tc_util.h" |
| 27 | #include "tc_common.h" |
| 28 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 29 | static void usage(void) |
| 30 | { |
Stephen Hemminger | ec2e005 | 2016-10-12 15:21:13 -0700 | [diff] [blame] | 31 | fprintf(stderr, |
| 32 | "Usage: tc filter [ add | del | change | replace | show ] dev STRING\n" |
| 33 | "Usage: tc filter get dev STRING parent CLASSID protocol PROTO handle FILTERID pref PRIO FILTER_TYPE\n" |
| 34 | " [ pref PRIO ] protocol PROTO\n" |
| 35 | " [ estimator INTERVAL TIME_CONSTANT ]\n" |
| 36 | " [ root | ingress | egress | parent CLASSID ]\n" |
| 37 | " [ handle FILTERID ] [ [ FILTER_TYPE ] [ help | OPTIONS ] ]\n" |
| 38 | "\n" |
| 39 | " tc filter show [ dev STRING ] [ root | ingress | egress | parent CLASSID ]\n" |
| 40 | "Where:\n" |
| 41 | "FILTER_TYPE := { rsvp | u32 | bpf | fw | route | etc. }\n" |
| 42 | "FILTERID := ... format depends on classifier, see there\n" |
| 43 | "OPTIONS := ... try tc filter add <desired FILTER_KIND> help\n"); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 44 | } |
| 45 | |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 46 | static int tc_filter_modify(int cmd, unsigned int flags, int argc, char **argv) |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 47 | { |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 48 | struct { |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 49 | struct nlmsghdr n; |
| 50 | struct tcmsg t; |
| 51 | char buf[MAX_MSG]; |
Phil Sutter | d17b136 | 2016-07-18 16:48:42 +0200 | [diff] [blame] | 52 | } req = { |
| 53 | .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tcmsg)), |
| 54 | .n.nlmsg_flags = NLM_F_REQUEST | flags, |
| 55 | .n.nlmsg_type = cmd, |
| 56 | .t.tcm_family = AF_UNSPEC, |
| 57 | }; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 58 | struct filter_util *q = NULL; |
| 59 | __u32 prio = 0; |
Patrick McHardy | ae76106 | 2008-06-23 15:59:18 +0200 | [diff] [blame] | 60 | __u32 protocol = 0; |
Patrick McHardy | 083a5f0 | 2008-03-26 07:40:03 +0100 | [diff] [blame] | 61 | int protocol_set = 0; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 62 | char *fhandle = NULL; |
Phil Sutter | d17b136 | 2016-07-18 16:48:42 +0200 | [diff] [blame] | 63 | char d[16] = {}; |
| 64 | char k[16] = {}; |
| 65 | struct tc_estimator est = {}; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 66 | |
Patrick McHardy | ae76106 | 2008-06-23 15:59:18 +0200 | [diff] [blame] | 67 | if (cmd == RTM_NEWTFILTER && flags & NLM_F_CREATE) |
Florian Westphal | 05fb918 | 2011-07-27 06:47:05 +0000 | [diff] [blame] | 68 | protocol = htons(ETH_P_ALL); |
Patrick McHardy | ae76106 | 2008-06-23 15:59:18 +0200 | [diff] [blame] | 69 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 70 | while (argc > 0) { |
| 71 | if (strcmp(*argv, "dev") == 0) { |
| 72 | NEXT_ARG(); |
| 73 | if (d[0]) |
| 74 | duparg("dev", *argv); |
| 75 | strncpy(d, *argv, sizeof(d)-1); |
| 76 | } else if (strcmp(*argv, "root") == 0) { |
| 77 | if (req.t.tcm_parent) { |
Stephen Hemminger | ec2e005 | 2016-10-12 15:21:13 -0700 | [diff] [blame] | 78 | fprintf(stderr, |
| 79 | "Error: \"root\" is duplicate parent ID\n"); |
osdl.net!shemminger | 024481b | 2005-03-14 19:02:41 +0000 | [diff] [blame] | 80 | return -1; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 81 | } |
| 82 | req.t.tcm_parent = TC_H_ROOT; |
Daniel Borkmann | 8f9afdd | 2016-01-12 01:42:20 +0100 | [diff] [blame] | 83 | } else if (strcmp(*argv, "ingress") == 0) { |
| 84 | if (req.t.tcm_parent) { |
Stephen Hemminger | ec2e005 | 2016-10-12 15:21:13 -0700 | [diff] [blame] | 85 | fprintf(stderr, |
| 86 | "Error: \"ingress\" is duplicate parent ID\n"); |
Daniel Borkmann | 8f9afdd | 2016-01-12 01:42:20 +0100 | [diff] [blame] | 87 | return -1; |
| 88 | } |
| 89 | req.t.tcm_parent = TC_H_MAKE(TC_H_CLSACT, |
| 90 | TC_H_MIN_INGRESS); |
| 91 | } else if (strcmp(*argv, "egress") == 0) { |
| 92 | if (req.t.tcm_parent) { |
Stephen Hemminger | ec2e005 | 2016-10-12 15:21:13 -0700 | [diff] [blame] | 93 | fprintf(stderr, |
| 94 | "Error: \"egress\" is duplicate parent ID\n"); |
Daniel Borkmann | 8f9afdd | 2016-01-12 01:42:20 +0100 | [diff] [blame] | 95 | return -1; |
| 96 | } |
| 97 | req.t.tcm_parent = TC_H_MAKE(TC_H_CLSACT, |
| 98 | TC_H_MIN_EGRESS); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 99 | } else if (strcmp(*argv, "parent") == 0) { |
| 100 | __u32 handle; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 101 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 102 | NEXT_ARG(); |
| 103 | if (req.t.tcm_parent) |
| 104 | duparg("parent", *argv); |
| 105 | if (get_tc_classid(&handle, *argv)) |
Dan Kenigsberg | f1675d6 | 2012-08-16 02:25:56 +0000 | [diff] [blame] | 106 | invarg("Invalid parent ID", *argv); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 107 | req.t.tcm_parent = handle; |
| 108 | } else if (strcmp(*argv, "handle") == 0) { |
| 109 | NEXT_ARG(); |
| 110 | if (fhandle) |
| 111 | duparg("handle", *argv); |
| 112 | fhandle = *argv; |
| 113 | } else if (matches(*argv, "preference") == 0 || |
| 114 | matches(*argv, "priority") == 0) { |
| 115 | NEXT_ARG(); |
| 116 | if (prio) |
| 117 | duparg("priority", *argv); |
Li Wei | 424adc1 | 2012-07-10 16:45:28 +0800 | [diff] [blame] | 118 | if (get_u32(&prio, *argv, 0) || prio > 0xFFFF) |
Dan Kenigsberg | f1675d6 | 2012-08-16 02:25:56 +0000 | [diff] [blame] | 119 | invarg("invalid priority value", *argv); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 120 | } else if (matches(*argv, "protocol") == 0) { |
| 121 | __u16 id; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 122 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 123 | NEXT_ARG(); |
Patrick McHardy | 083a5f0 | 2008-03-26 07:40:03 +0100 | [diff] [blame] | 124 | if (protocol_set) |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 125 | duparg("protocol", *argv); |
| 126 | if (ll_proto_a2n(&id, *argv)) |
Dan Kenigsberg | f1675d6 | 2012-08-16 02:25:56 +0000 | [diff] [blame] | 127 | invarg("invalid protocol", *argv); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 128 | protocol = id; |
Patrick McHardy | 083a5f0 | 2008-03-26 07:40:03 +0100 | [diff] [blame] | 129 | protocol_set = 1; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 130 | } else if (matches(*argv, "estimator") == 0) { |
| 131 | if (parse_estimator(&argc, &argv, &est) < 0) |
| 132 | return -1; |
| 133 | } else if (matches(*argv, "help") == 0) { |
| 134 | usage(); |
Stephen Hemminger | 3a99df7 | 2008-10-13 07:00:48 -0700 | [diff] [blame] | 135 | return 0; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 136 | } else { |
| 137 | strncpy(k, *argv, sizeof(k)-1); |
| 138 | |
| 139 | q = get_filter_kind(k); |
| 140 | argc--; argv++; |
| 141 | break; |
| 142 | } |
| 143 | |
| 144 | argc--; argv++; |
| 145 | } |
| 146 | |
| 147 | req.t.tcm_info = TC_H_MAKE(prio<<16, protocol); |
| 148 | |
| 149 | if (k[0]) |
| 150 | addattr_l(&req.n, sizeof(req), TCA_KIND, k, strlen(k)+1); |
| 151 | |
| 152 | if (q) { |
| 153 | if (q->parse_fopt(q, fhandle, argc, argv, &req.n)) |
osdl.net!shemminger | 024481b | 2005-03-14 19:02:41 +0000 | [diff] [blame] | 154 | return 1; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 155 | } else { |
| 156 | if (fhandle) { |
Stephen Hemminger | ec2e005 | 2016-10-12 15:21:13 -0700 | [diff] [blame] | 157 | fprintf(stderr, |
| 158 | "Must specify filter type when using \"handle\"\n"); |
osdl.net!shemminger | 024481b | 2005-03-14 19:02:41 +0000 | [diff] [blame] | 159 | return -1; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 160 | } |
| 161 | if (argc) { |
| 162 | if (matches(*argv, "help") == 0) |
| 163 | usage(); |
Stephen Hemminger | ec2e005 | 2016-10-12 15:21:13 -0700 | [diff] [blame] | 164 | fprintf(stderr, |
| 165 | "Garbage instead of arguments \"%s ...\". Try \"tc filter help\".\n", |
| 166 | *argv); |
osdl.net!shemminger | 024481b | 2005-03-14 19:02:41 +0000 | [diff] [blame] | 167 | return -1; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 168 | } |
| 169 | } |
| 170 | if (est.ewma_log) |
| 171 | addattr_l(&req.n, sizeof(req), TCA_RATE, &est, sizeof(est)); |
| 172 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 173 | |
| 174 | if (d[0]) { |
Stephen Hemminger | 3d0b743 | 2014-12-20 15:47:17 -0800 | [diff] [blame] | 175 | ll_init_map(&rth); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 176 | |
Stephen Hemminger | ec2e005 | 2016-10-12 15:21:13 -0700 | [diff] [blame] | 177 | req.t.tcm_ifindex = ll_name_to_index(d); |
| 178 | if (req.t.tcm_ifindex == 0) { |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 179 | fprintf(stderr, "Cannot find device \"%s\"\n", d); |
osdl.net!shemminger | 024481b | 2005-03-14 19:02:41 +0000 | [diff] [blame] | 180 | return 1; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 181 | } |
| 182 | } |
| 183 | |
Stephen Hemminger | c079e12 | 2015-05-27 12:26:14 -0700 | [diff] [blame] | 184 | if (rtnl_talk(&rth, &req.n, NULL, 0) < 0) { |
osdl.net!shemminger | 2373fde | 2004-08-13 23:54:55 +0000 | [diff] [blame] | 185 | fprintf(stderr, "We have an error talking to the kernel\n"); |
osdl.net!shemminger | 024481b | 2005-03-14 19:02:41 +0000 | [diff] [blame] | 186 | return 2; |
osdl.net!shemminger | 2373fde | 2004-08-13 23:54:55 +0000 | [diff] [blame] | 187 | } |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 188 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 189 | return 0; |
| 190 | } |
| 191 | |
| 192 | static __u32 filter_parent; |
| 193 | static int filter_ifindex; |
| 194 | static __u32 filter_prio; |
| 195 | static __u32 filter_protocol; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 196 | __u16 f_proto; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 197 | |
Jamal Hadi Salim | 120f556 | 2016-10-10 12:45:14 -0400 | [diff] [blame] | 198 | int print_filter(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg) |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 199 | { |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 200 | FILE *fp = (FILE *)arg; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 201 | struct tcmsg *t = NLMSG_DATA(n); |
| 202 | int len = n->nlmsg_len; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 203 | struct rtattr *tb[TCA_MAX+1]; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 204 | struct filter_util *q; |
| 205 | char abuf[256]; |
| 206 | |
Jamal Hadi Salim | 120f556 | 2016-10-10 12:45:14 -0400 | [diff] [blame] | 207 | if (n->nlmsg_type != RTM_NEWTFILTER && |
| 208 | n->nlmsg_type != RTM_GETTFILTER && |
| 209 | n->nlmsg_type != RTM_DELTFILTER) { |
| 210 | fprintf(stderr, "Not a filter(cmd %d)\n", n->nlmsg_type); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 211 | return 0; |
| 212 | } |
| 213 | len -= NLMSG_LENGTH(sizeof(*t)); |
| 214 | if (len < 0) { |
| 215 | fprintf(stderr, "Wrong len %d\n", len); |
| 216 | return -1; |
| 217 | } |
| 218 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 219 | parse_rtattr(tb, TCA_MAX, TCA_RTA(t), len); |
| 220 | |
| 221 | if (tb[TCA_KIND] == NULL) { |
osdl.net!shemminger | 2373fde | 2004-08-13 23:54:55 +0000 | [diff] [blame] | 222 | fprintf(stderr, "print_filter: NULL kind\n"); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 223 | return -1; |
| 224 | } |
| 225 | |
| 226 | if (n->nlmsg_type == RTM_DELTFILTER) |
| 227 | fprintf(fp, "deleted "); |
| 228 | |
Roman Mashak | 98df0c8 | 2016-11-16 17:30:20 -0500 | [diff] [blame^] | 229 | if (n->nlmsg_type == RTM_NEWTFILTER && |
| 230 | (n->nlmsg_flags & NLM_F_CREATE) && |
| 231 | !(n->nlmsg_flags & NLM_F_EXCL)) |
| 232 | fprintf(fp, "replaced "); |
| 233 | |
| 234 | if (n->nlmsg_type == RTM_NEWTFILTER && |
| 235 | (n->nlmsg_flags & NLM_F_CREATE) && |
| 236 | (n->nlmsg_flags & NLM_F_EXCL)) |
| 237 | fprintf(fp, "added "); |
| 238 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 239 | fprintf(fp, "filter "); |
| 240 | if (!filter_ifindex || filter_ifindex != t->tcm_ifindex) |
| 241 | fprintf(fp, "dev %s ", ll_index_to_name(t->tcm_ifindex)); |
| 242 | |
| 243 | if (!filter_parent || filter_parent != t->tcm_parent) { |
| 244 | if (t->tcm_parent == TC_H_ROOT) |
| 245 | fprintf(fp, "root "); |
Daniel Borkmann | 8f9afdd | 2016-01-12 01:42:20 +0100 | [diff] [blame] | 246 | else if (t->tcm_parent == TC_H_MAKE(TC_H_CLSACT, TC_H_MIN_INGRESS)) |
| 247 | fprintf(fp, "ingress "); |
| 248 | else if (t->tcm_parent == TC_H_MAKE(TC_H_CLSACT, TC_H_MIN_EGRESS)) |
| 249 | fprintf(fp, "egress "); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 250 | else { |
| 251 | print_tc_classid(abuf, sizeof(abuf), t->tcm_parent); |
| 252 | fprintf(fp, "parent %s ", abuf); |
| 253 | } |
| 254 | } |
Daniel Borkmann | 8f9afdd | 2016-01-12 01:42:20 +0100 | [diff] [blame] | 255 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 256 | if (t->tcm_info) { |
jamal | eefcbc7 | 2008-04-20 10:47:48 -0400 | [diff] [blame] | 257 | f_proto = TC_H_MIN(t->tcm_info); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 258 | __u32 prio = TC_H_MAJ(t->tcm_info)>>16; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 259 | |
jamal | eefcbc7 | 2008-04-20 10:47:48 -0400 | [diff] [blame] | 260 | if (!filter_protocol || filter_protocol != f_proto) { |
| 261 | if (f_proto) { |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 262 | SPRINT_BUF(b1); |
| 263 | fprintf(fp, "protocol %s ", |
jamal | eefcbc7 | 2008-04-20 10:47:48 -0400 | [diff] [blame] | 264 | ll_proto_n2a(f_proto, b1, sizeof(b1))); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 265 | } |
| 266 | } |
| 267 | if (!filter_prio || filter_prio != prio) { |
| 268 | if (prio) |
| 269 | fprintf(fp, "pref %u ", prio); |
| 270 | } |
| 271 | } |
Stephen Hemminger | ff24746 | 2012-04-10 08:47:55 -0700 | [diff] [blame] | 272 | fprintf(fp, "%s ", rta_getattr_str(tb[TCA_KIND])); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 273 | q = get_filter_kind(RTA_DATA(tb[TCA_KIND])); |
| 274 | if (tb[TCA_OPTIONS]) { |
| 275 | if (q) |
| 276 | q->print_fopt(q, fp, tb[TCA_OPTIONS], t->tcm_handle); |
| 277 | else |
| 278 | fprintf(fp, "[cannot parse parameters]"); |
| 279 | } |
| 280 | fprintf(fp, "\n"); |
| 281 | |
ch[shemminger]!tgraf | e5879dc | 2004-12-07 23:52:52 +0000 | [diff] [blame] | 282 | if (show_stats && (tb[TCA_STATS] || tb[TCA_STATS2])) { |
| 283 | print_tcstats_attr(fp, tb, " ", NULL); |
osdl.net!shemminger | de48178 | 2004-08-31 17:45:21 +0000 | [diff] [blame] | 284 | fprintf(fp, "\n"); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 285 | } |
osdl.net!shemminger | de48178 | 2004-08-31 17:45:21 +0000 | [diff] [blame] | 286 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 287 | fflush(fp); |
| 288 | return 0; |
| 289 | } |
| 290 | |
Jamal Hadi Salim | 120f556 | 2016-10-10 12:45:14 -0400 | [diff] [blame] | 291 | static int tc_filter_get(int cmd, unsigned int flags, int argc, char **argv) |
| 292 | { |
| 293 | struct { |
| 294 | struct nlmsghdr n; |
| 295 | struct tcmsg t; |
| 296 | char buf[MAX_MSG]; |
| 297 | } req = { |
| 298 | .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tcmsg)), |
| 299 | /* NLM_F_ECHO is for backward compatibility. old kernels never |
| 300 | * respond without it and newer kernels will ignore it. |
| 301 | * In old kernels there is a side effect: |
| 302 | * In addition to a response to the GET you will receive an |
| 303 | * event (if you do tc mon). |
| 304 | */ |
| 305 | .n.nlmsg_flags = NLM_F_REQUEST | NLM_F_ECHO | flags, |
| 306 | .n.nlmsg_type = cmd, |
| 307 | .t.tcm_parent = TC_H_UNSPEC, |
| 308 | .t.tcm_family = AF_UNSPEC, |
| 309 | }; |
| 310 | struct filter_util *q = NULL; |
| 311 | __u32 prio = 0; |
| 312 | __u32 protocol = 0; |
| 313 | int protocol_set = 0; |
| 314 | __u32 parent_handle = 0; |
| 315 | char *fhandle = NULL; |
| 316 | char d[16] = {}; |
| 317 | char k[16] = {}; |
| 318 | |
| 319 | while (argc > 0) { |
| 320 | if (strcmp(*argv, "dev") == 0) { |
| 321 | NEXT_ARG(); |
| 322 | if (d[0]) |
| 323 | duparg("dev", *argv); |
| 324 | strncpy(d, *argv, sizeof(d)-1); |
| 325 | } else if (strcmp(*argv, "root") == 0) { |
| 326 | if (req.t.tcm_parent) { |
Stephen Hemminger | ec2e005 | 2016-10-12 15:21:13 -0700 | [diff] [blame] | 327 | fprintf(stderr, |
| 328 | "Error: \"root\" is duplicate parent ID\n"); |
Jamal Hadi Salim | 120f556 | 2016-10-10 12:45:14 -0400 | [diff] [blame] | 329 | return -1; |
| 330 | } |
| 331 | req.t.tcm_parent = TC_H_ROOT; |
| 332 | } else if (strcmp(*argv, "ingress") == 0) { |
| 333 | if (req.t.tcm_parent) { |
Stephen Hemminger | ec2e005 | 2016-10-12 15:21:13 -0700 | [diff] [blame] | 334 | fprintf(stderr, |
| 335 | "Error: \"ingress\" is duplicate parent ID\n"); |
Jamal Hadi Salim | 120f556 | 2016-10-10 12:45:14 -0400 | [diff] [blame] | 336 | return -1; |
| 337 | } |
| 338 | req.t.tcm_parent = TC_H_MAKE(TC_H_CLSACT, |
| 339 | TC_H_MIN_INGRESS); |
| 340 | } else if (strcmp(*argv, "egress") == 0) { |
| 341 | if (req.t.tcm_parent) { |
Stephen Hemminger | ec2e005 | 2016-10-12 15:21:13 -0700 | [diff] [blame] | 342 | fprintf(stderr, |
| 343 | "Error: \"egress\" is duplicate parent ID\n"); |
Jamal Hadi Salim | 120f556 | 2016-10-10 12:45:14 -0400 | [diff] [blame] | 344 | return -1; |
| 345 | } |
| 346 | req.t.tcm_parent = TC_H_MAKE(TC_H_CLSACT, |
| 347 | TC_H_MIN_EGRESS); |
| 348 | } else if (strcmp(*argv, "parent") == 0) { |
| 349 | |
| 350 | NEXT_ARG(); |
| 351 | if (req.t.tcm_parent) |
| 352 | duparg("parent", *argv); |
| 353 | if (get_tc_classid(&parent_handle, *argv)) |
| 354 | invarg("Invalid parent ID", *argv); |
| 355 | req.t.tcm_parent = parent_handle; |
| 356 | } else if (strcmp(*argv, "handle") == 0) { |
| 357 | NEXT_ARG(); |
| 358 | if (fhandle) |
| 359 | duparg("handle", *argv); |
| 360 | fhandle = *argv; |
| 361 | } else if (matches(*argv, "preference") == 0 || |
| 362 | matches(*argv, "priority") == 0) { |
| 363 | NEXT_ARG(); |
| 364 | if (prio) |
| 365 | duparg("priority", *argv); |
| 366 | if (get_u32(&prio, *argv, 0) || prio > 0xFFFF) |
| 367 | invarg("invalid priority value", *argv); |
| 368 | } else if (matches(*argv, "protocol") == 0) { |
| 369 | __u16 id; |
| 370 | |
| 371 | NEXT_ARG(); |
| 372 | if (protocol_set) |
| 373 | duparg("protocol", *argv); |
| 374 | if (ll_proto_a2n(&id, *argv)) |
| 375 | invarg("invalid protocol", *argv); |
| 376 | protocol = id; |
| 377 | protocol_set = 1; |
| 378 | } else if (matches(*argv, "help") == 0) { |
| 379 | usage(); |
| 380 | return 0; |
| 381 | } else { |
| 382 | strncpy(k, *argv, sizeof(k)-1); |
| 383 | |
| 384 | q = get_filter_kind(k); |
| 385 | argc--; argv++; |
| 386 | break; |
| 387 | } |
| 388 | |
| 389 | argc--; argv++; |
| 390 | } |
| 391 | |
| 392 | if (!protocol_set) { |
| 393 | fprintf(stderr, "Must specify filter protocol\n"); |
| 394 | return -1; |
| 395 | } |
| 396 | |
| 397 | if (!prio) { |
| 398 | fprintf(stderr, "Must specify filter priority\n"); |
| 399 | return -1; |
| 400 | } |
| 401 | |
| 402 | req.t.tcm_info = TC_H_MAKE(prio<<16, protocol); |
| 403 | |
| 404 | if (req.t.tcm_parent == TC_H_UNSPEC) { |
| 405 | fprintf(stderr, "Must specify filter parent\n"); |
| 406 | return -1; |
| 407 | } |
| 408 | |
| 409 | if (k[0]) |
| 410 | addattr_l(&req.n, sizeof(req), TCA_KIND, k, strlen(k)+1); |
| 411 | else { |
| 412 | fprintf(stderr, "Must specify filter type\n"); |
| 413 | return -1; |
| 414 | } |
| 415 | |
| 416 | if (q->parse_fopt(q, fhandle, argc, argv, &req.n)) |
| 417 | return 1; |
| 418 | |
| 419 | |
| 420 | if (!fhandle) { |
| 421 | fprintf(stderr, "Must specify filter \"handle\"\n"); |
| 422 | return -1; |
| 423 | } |
| 424 | |
| 425 | if (argc) { |
| 426 | if (matches(*argv, "help") == 0) |
| 427 | usage(); |
Stephen Hemminger | ec2e005 | 2016-10-12 15:21:13 -0700 | [diff] [blame] | 428 | fprintf(stderr, |
| 429 | "Garbage instead of arguments \"%s ...\". Try \"tc filter help\".\n", |
Jamal Hadi Salim | 120f556 | 2016-10-10 12:45:14 -0400 | [diff] [blame] | 430 | *argv); |
| 431 | return -1; |
| 432 | } |
| 433 | |
| 434 | if (d[0]) { |
| 435 | ll_init_map(&rth); |
| 436 | |
| 437 | req.t.tcm_ifindex = ll_name_to_index(d); |
| 438 | if (req.t.tcm_ifindex == 0) { |
| 439 | fprintf(stderr, "Cannot find device \"%s\"\n", d); |
| 440 | return 1; |
| 441 | } |
| 442 | filter_ifindex = req.t.tcm_ifindex; |
| 443 | } else { |
| 444 | fprintf(stderr, "Must specify netdevice \"dev\"\n"); |
| 445 | return -1; |
| 446 | } |
| 447 | |
| 448 | if (rtnl_talk(&rth, &req.n, &req.n, MAX_MSG) < 0) { |
| 449 | fprintf(stderr, "We have an error talking to the kernel\n"); |
| 450 | return 2; |
| 451 | } |
| 452 | |
| 453 | print_filter(NULL, &req.n, (void *)stdout); |
| 454 | |
| 455 | return 0; |
| 456 | } |
| 457 | |
Stephen Hemminger | d1f28cf | 2013-02-12 11:09:03 -0800 | [diff] [blame] | 458 | static int tc_filter_list(int argc, char **argv) |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 459 | { |
Phil Sutter | d17b136 | 2016-07-18 16:48:42 +0200 | [diff] [blame] | 460 | struct tcmsg t = { .tcm_family = AF_UNSPEC }; |
| 461 | char d[16] = {}; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 462 | __u32 prio = 0; |
| 463 | __u32 protocol = 0; |
| 464 | char *fhandle = NULL; |
| 465 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 466 | while (argc > 0) { |
| 467 | if (strcmp(*argv, "dev") == 0) { |
| 468 | NEXT_ARG(); |
| 469 | if (d[0]) |
| 470 | duparg("dev", *argv); |
| 471 | strncpy(d, *argv, sizeof(d)-1); |
| 472 | } else if (strcmp(*argv, "root") == 0) { |
| 473 | if (t.tcm_parent) { |
Stephen Hemminger | ec2e005 | 2016-10-12 15:21:13 -0700 | [diff] [blame] | 474 | fprintf(stderr, |
| 475 | "Error: \"root\" is duplicate parent ID\n"); |
osdl.net!shemminger | 024481b | 2005-03-14 19:02:41 +0000 | [diff] [blame] | 476 | return -1; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 477 | } |
| 478 | filter_parent = t.tcm_parent = TC_H_ROOT; |
Daniel Borkmann | 8f9afdd | 2016-01-12 01:42:20 +0100 | [diff] [blame] | 479 | } else if (strcmp(*argv, "ingress") == 0) { |
| 480 | if (t.tcm_parent) { |
Stephen Hemminger | ec2e005 | 2016-10-12 15:21:13 -0700 | [diff] [blame] | 481 | fprintf(stderr, |
| 482 | "Error: \"ingress\" is duplicate parent ID\n"); |
Daniel Borkmann | 8f9afdd | 2016-01-12 01:42:20 +0100 | [diff] [blame] | 483 | return -1; |
| 484 | } |
| 485 | filter_parent = TC_H_MAKE(TC_H_CLSACT, |
| 486 | TC_H_MIN_INGRESS); |
| 487 | t.tcm_parent = filter_parent; |
| 488 | } else if (strcmp(*argv, "egress") == 0) { |
| 489 | if (t.tcm_parent) { |
Stephen Hemminger | ec2e005 | 2016-10-12 15:21:13 -0700 | [diff] [blame] | 490 | fprintf(stderr, |
| 491 | "Error: \"egress\" is duplicate parent ID\n"); |
Daniel Borkmann | 8f9afdd | 2016-01-12 01:42:20 +0100 | [diff] [blame] | 492 | return -1; |
| 493 | } |
| 494 | filter_parent = TC_H_MAKE(TC_H_CLSACT, |
| 495 | TC_H_MIN_EGRESS); |
| 496 | t.tcm_parent = filter_parent; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 497 | } else if (strcmp(*argv, "parent") == 0) { |
| 498 | __u32 handle; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 499 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 500 | NEXT_ARG(); |
| 501 | if (t.tcm_parent) |
| 502 | duparg("parent", *argv); |
| 503 | if (get_tc_classid(&handle, *argv)) |
Dan Kenigsberg | f1675d6 | 2012-08-16 02:25:56 +0000 | [diff] [blame] | 504 | invarg("invalid parent ID", *argv); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 505 | filter_parent = t.tcm_parent = handle; |
| 506 | } else if (strcmp(*argv, "handle") == 0) { |
| 507 | NEXT_ARG(); |
| 508 | if (fhandle) |
| 509 | duparg("handle", *argv); |
| 510 | fhandle = *argv; |
| 511 | } else if (matches(*argv, "preference") == 0 || |
| 512 | matches(*argv, "priority") == 0) { |
| 513 | NEXT_ARG(); |
| 514 | if (prio) |
| 515 | duparg("priority", *argv); |
| 516 | if (get_u32(&prio, *argv, 0)) |
Dan Kenigsberg | f1675d6 | 2012-08-16 02:25:56 +0000 | [diff] [blame] | 517 | invarg("invalid preference", *argv); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 518 | filter_prio = prio; |
| 519 | } else if (matches(*argv, "protocol") == 0) { |
| 520 | __u16 res; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 521 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 522 | NEXT_ARG(); |
| 523 | if (protocol) |
| 524 | duparg("protocol", *argv); |
| 525 | if (ll_proto_a2n(&res, *argv)) |
Dan Kenigsberg | f1675d6 | 2012-08-16 02:25:56 +0000 | [diff] [blame] | 526 | invarg("invalid protocol", *argv); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 527 | protocol = res; |
| 528 | filter_protocol = protocol; |
| 529 | } else if (matches(*argv, "help") == 0) { |
| 530 | usage(); |
| 531 | } else { |
Stephen Hemminger | ec2e005 | 2016-10-12 15:21:13 -0700 | [diff] [blame] | 532 | fprintf(stderr, |
| 533 | " What is \"%s\"? Try \"tc filter help\"\n", |
| 534 | *argv); |
osdl.net!shemminger | 024481b | 2005-03-14 19:02:41 +0000 | [diff] [blame] | 535 | return -1; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 536 | } |
| 537 | |
| 538 | argc--; argv++; |
| 539 | } |
| 540 | |
| 541 | t.tcm_info = TC_H_MAKE(prio<<16, protocol); |
| 542 | |
Stephen Hemminger | 3d0b743 | 2014-12-20 15:47:17 -0800 | [diff] [blame] | 543 | ll_init_map(&rth); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 544 | |
| 545 | if (d[0]) { |
Stephen Hemminger | ec2e005 | 2016-10-12 15:21:13 -0700 | [diff] [blame] | 546 | t.tcm_ifindex = ll_name_to_index(d); |
| 547 | if (t.tcm_ifindex == 0) { |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 548 | fprintf(stderr, "Cannot find device \"%s\"\n", d); |
osdl.net!shemminger | 024481b | 2005-03-14 19:02:41 +0000 | [diff] [blame] | 549 | return 1; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 550 | } |
| 551 | filter_ifindex = t.tcm_ifindex; |
| 552 | } |
| 553 | |
Stephen Hemminger | 3d0b743 | 2014-12-20 15:47:17 -0800 | [diff] [blame] | 554 | if (rtnl_dump_request(&rth, RTM_GETTFILTER, &t, sizeof(t)) < 0) { |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 555 | perror("Cannot send dump request"); |
osdl.net!shemminger | 024481b | 2005-03-14 19:02:41 +0000 | [diff] [blame] | 556 | return 1; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 557 | } |
| 558 | |
Stephen Hemminger | 3d0b743 | 2014-12-20 15:47:17 -0800 | [diff] [blame] | 559 | if (rtnl_dump_filter(&rth, print_filter, stdout) < 0) { |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 560 | fprintf(stderr, "Dump terminated\n"); |
osdl.net!shemminger | 024481b | 2005-03-14 19:02:41 +0000 | [diff] [blame] | 561 | return 1; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 562 | } |
| 563 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 564 | return 0; |
| 565 | } |
| 566 | |
| 567 | int do_filter(int argc, char **argv) |
| 568 | { |
| 569 | if (argc < 1) |
| 570 | return tc_filter_list(0, NULL); |
| 571 | if (matches(*argv, "add") == 0) |
Jamal Hadi Salim | 120f556 | 2016-10-10 12:45:14 -0400 | [diff] [blame] | 572 | return tc_filter_modify(RTM_NEWTFILTER, NLM_F_EXCL|NLM_F_CREATE, |
| 573 | argc-1, argv+1); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 574 | if (matches(*argv, "change") == 0) |
| 575 | return tc_filter_modify(RTM_NEWTFILTER, 0, argc-1, argv+1); |
| 576 | if (matches(*argv, "replace") == 0) |
Jamal Hadi Salim | 120f556 | 2016-10-10 12:45:14 -0400 | [diff] [blame] | 577 | return tc_filter_modify(RTM_NEWTFILTER, NLM_F_CREATE, argc-1, |
| 578 | argv+1); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 579 | if (matches(*argv, "delete") == 0) |
| 580 | return tc_filter_modify(RTM_DELTFILTER, 0, argc-1, argv+1); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 581 | if (matches(*argv, "get") == 0) |
| 582 | return tc_filter_get(RTM_GETTFILTER, 0, argc-1, argv+1); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 583 | if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0 |
| 584 | || matches(*argv, "lst") == 0) |
| 585 | return tc_filter_list(argc-1, argv+1); |
Hasso Tepper | e5d179d | 2006-12-10 16:33:05 +0200 | [diff] [blame] | 586 | if (matches(*argv, "help") == 0) { |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 587 | usage(); |
Hasso Tepper | e5d179d | 2006-12-10 16:33:05 +0200 | [diff] [blame] | 588 | return 0; |
Stephen Hemminger | 32a121c | 2016-03-21 11:48:36 -0700 | [diff] [blame] | 589 | } |
Jamal Hadi Salim | 120f556 | 2016-10-10 12:45:14 -0400 | [diff] [blame] | 590 | fprintf(stderr, "Command \"%s\" is unknown, try \"tc filter help\".\n", |
| 591 | *argv); |
osdl.net!shemminger | 024481b | 2005-03-14 19:02:41 +0000 | [diff] [blame] | 592 | return -1; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 593 | } |