osdl.net!shemminger | 2265da0 | 2004-08-30 21:20:10 +0000 | [diff] [blame] | 1 | /* |
Stephen Hemminger | ae665a5 | 2006-12-05 10:10:22 -0800 | [diff] [blame] | 2 | * m_gact.c generic actions module |
osdl.net!shemminger | 2265da0 | 2004-08-30 21:20:10 +0000 | [diff] [blame] | 3 | * |
| 4 | * This program is free software; you can distribute 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 | * |
Stephen Hemminger | ae665a5 | 2006-12-05 10:10:22 -0800 | [diff] [blame] | 9 | * Authors: J Hadi Salim (hadi@cyberus.ca) |
| 10 | * |
osdl.net!shemminger | 2265da0 | 2004-08-30 21:20:10 +0000 | [diff] [blame] | 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 "tc_util.h" |
| 25 | #include <linux/tc_act/tc_gact.h> |
| 26 | |
| 27 | /* define to turn on probablity stuff */ |
| 28 | |
| 29 | #ifdef CONFIG_GACT_PROB |
Stephen Hemminger | ae665a5 | 2006-12-05 10:10:22 -0800 | [diff] [blame] | 30 | static const char *prob_n2a(int p) |
osdl.net!shemminger | 2265da0 | 2004-08-30 21:20:10 +0000 | [diff] [blame] | 31 | { |
| 32 | if (p == PGACT_NONE) |
| 33 | return "none"; |
| 34 | if (p == PGACT_NETRAND) |
| 35 | return "netrand"; |
| 36 | if (p == PGACT_DETERM) |
| 37 | return "determ"; |
| 38 | return "none"; |
| 39 | } |
| 40 | #endif |
| 41 | |
| 42 | static void |
| 43 | explain(void) |
| 44 | { |
| 45 | #ifdef CONFIG_GACT_PROB |
| 46 | fprintf(stderr, "Usage: ... gact <ACTION> [RAND] [INDEX]\n"); |
| 47 | fprintf(stderr, |
Jamal Hadi Salim | ebf3208 | 2006-08-08 12:10:08 -0700 | [diff] [blame] | 48 | "Where: \tACTION := reclassify | drop | continue | pass \n" |
| 49 | "\tRAND := random <RANDTYPE> <ACTION> <VAL>\n" |
| 50 | "\tRANDTYPE := netrand | determ\n" |
| 51 | "\tVAL : = value not exceeding 10000\n" |
| 52 | "\tINDEX := index value used\n" |
Stephen Hemminger | 302d3fb | 2006-09-25 17:08:40 -0700 | [diff] [blame] | 53 | "\n"); |
osdl.net!shemminger | 2265da0 | 2004-08-30 21:20:10 +0000 | [diff] [blame] | 54 | #else |
| 55 | fprintf(stderr, "Usage: ... gact <ACTION> [INDEX]\n"); |
| 56 | fprintf(stderr, |
Stephen Hemminger | 302d3fb | 2006-09-25 17:08:40 -0700 | [diff] [blame] | 57 | "Where: \tACTION := reclassify | drop | continue | pass \n" |
Jamal Hadi Salim | ebf3208 | 2006-08-08 12:10:08 -0700 | [diff] [blame] | 58 | "\tINDEX := index value used\n" |
jamal | f1e4f04 | 2006-08-04 10:59:34 -0700 | [diff] [blame] | 59 | "\n"); |
osdl.net!shemminger | 2265da0 | 2004-08-30 21:20:10 +0000 | [diff] [blame] | 60 | #endif |
| 61 | } |
| 62 | |
Stephen Hemminger | 302d3fb | 2006-09-25 17:08:40 -0700 | [diff] [blame] | 63 | |
Jamal Hadi Salim | ebf3208 | 2006-08-08 12:10:08 -0700 | [diff] [blame] | 64 | static void |
| 65 | usage(void) |
| 66 | { |
| 67 | explain(); |
| 68 | exit(-1); |
| 69 | } |
| 70 | |
osdl.net!shemminger | 2265da0 | 2004-08-30 21:20:10 +0000 | [diff] [blame] | 71 | int |
| 72 | get_act(char ***argv_p) |
| 73 | { |
| 74 | char **argv = *argv_p; |
| 75 | |
| 76 | if (matches(*argv, "reclassify") == 0) { |
| 77 | return TC_ACT_RECLASSIFY; |
| 78 | } else if (matches(*argv, "drop") == 0 || matches(*argv, "shot") == 0) { |
| 79 | return TC_ACT_SHOT; |
| 80 | } else if (matches(*argv, "continue") == 0) { |
| 81 | return TC_ACT_UNSPEC; |
| 82 | } else if (matches(*argv, "pipe") == 0) { |
| 83 | return TC_ACT_PIPE; |
| 84 | } else if (matches(*argv, "pass") == 0 || matches(*argv, "ok") == 0) { |
| 85 | return TC_ACT_OK; |
| 86 | } else { |
| 87 | fprintf(stderr,"bad action type %s\n",*argv); |
| 88 | return -10; |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | int |
| 93 | parse_gact(struct action_util *a, int *argc_p, char ***argv_p, int tca_id, struct nlmsghdr *n) |
| 94 | { |
| 95 | int argc = *argc_p; |
| 96 | char **argv = *argv_p; |
| 97 | int ok = 0; |
| 98 | int action = TC_POLICE_RECLASSIFY; |
| 99 | struct tc_gact p; |
| 100 | #ifdef CONFIG_GACT_PROB |
| 101 | int rd = 0; |
| 102 | struct tc_gact_p pp; |
| 103 | #endif |
| 104 | struct rtattr *tail; |
| 105 | |
| 106 | memset(&p, 0, sizeof (p)); |
| 107 | p.action = TC_POLICE_RECLASSIFY; |
| 108 | |
| 109 | if (argc < 0) |
| 110 | return -1; |
| 111 | |
| 112 | |
| 113 | if (matches(*argv, "gact") == 0) { |
| 114 | ok++; |
| 115 | } else { |
| 116 | action = get_act(&argv); |
| 117 | if (action != -10) { |
| 118 | p.action = action; |
| 119 | ok++; |
| 120 | } else { |
| 121 | explain(); |
| 122 | return action; |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | if (ok) { |
| 127 | argc--; |
| 128 | argv++; |
| 129 | } |
| 130 | |
| 131 | #ifdef CONFIG_GACT_PROB |
| 132 | if (ok && argc > 0) { |
| 133 | if (matches(*argv, "random") == 0) { |
| 134 | rd = 1; |
| 135 | NEXT_ARG(); |
| 136 | if (matches(*argv, "netrand") == 0) { |
| 137 | NEXT_ARG(); |
| 138 | pp.ptype = PGACT_NETRAND; |
| 139 | } else if (matches(*argv, "determ") == 0) { |
| 140 | NEXT_ARG(); |
| 141 | pp.ptype = PGACT_DETERM; |
| 142 | } else { |
| 143 | fprintf(stderr, "Illegal \"random type\"\n"); |
| 144 | return -1; |
| 145 | } |
| 146 | |
| 147 | action = get_act(&argv); |
| 148 | if (action != -10) { /* FIXME */ |
| 149 | pp.paction = action; |
| 150 | } else { |
| 151 | explain(); |
| 152 | return -1; |
| 153 | } |
| 154 | argc--; |
| 155 | argv++; |
| 156 | if (get_u16(&pp.pval, *argv, 10)) { |
| 157 | fprintf(stderr, "Illegal probability val 0x%x\n",pp.pval); |
| 158 | return -1; |
| 159 | } |
| 160 | if (pp.pval > 10000) { |
| 161 | fprintf(stderr, "Illegal probability val 0x%x\n",pp.pval); |
| 162 | return -1; |
| 163 | } |
| 164 | argc--; |
| 165 | argv++; |
Jamal Hadi Salim | ebf3208 | 2006-08-08 12:10:08 -0700 | [diff] [blame] | 166 | } else if (matches(*argv, "help") == 0) { |
| 167 | usage(); |
osdl.net!shemminger | 2265da0 | 2004-08-30 21:20:10 +0000 | [diff] [blame] | 168 | } |
| 169 | } |
| 170 | #endif |
| 171 | |
| 172 | if (argc > 0) { |
| 173 | if (matches(*argv, "index") == 0) { |
| 174 | NEXT_ARG(); |
| 175 | if (get_u32(&p.index, *argv, 10)) { |
| 176 | fprintf(stderr, "Illegal \"index\"\n"); |
| 177 | return -1; |
| 178 | } |
| 179 | argc--; |
| 180 | argv++; |
| 181 | ok++; |
jamal | f1e4f04 | 2006-08-04 10:59:34 -0700 | [diff] [blame] | 182 | } else if (matches(*argv, "help") == 0) { |
Stephen Hemminger | 302d3fb | 2006-09-25 17:08:40 -0700 | [diff] [blame] | 183 | usage(); |
osdl.net!shemminger | 2265da0 | 2004-08-30 21:20:10 +0000 | [diff] [blame] | 184 | } |
| 185 | } |
| 186 | |
| 187 | if (!ok) |
| 188 | return -1; |
| 189 | |
4!tgraf | 228569c | 2005-01-18 01:24:18 +0000 | [diff] [blame] | 190 | tail = NLMSG_TAIL(n); |
osdl.net!shemminger | 2265da0 | 2004-08-30 21:20:10 +0000 | [diff] [blame] | 191 | addattr_l(n, MAX_MSG, tca_id, NULL, 0); |
| 192 | addattr_l(n, MAX_MSG, TCA_GACT_PARMS, &p, sizeof (p)); |
| 193 | #ifdef CONFIG_GACT_PROB |
| 194 | if (rd) { |
| 195 | addattr_l(n, MAX_MSG, TCA_GACT_PROB, &pp, sizeof (pp)); |
| 196 | } |
| 197 | #endif |
4!tgraf | 228569c | 2005-01-18 01:24:18 +0000 | [diff] [blame] | 198 | tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail; |
osdl.net!shemminger | 2265da0 | 2004-08-30 21:20:10 +0000 | [diff] [blame] | 199 | |
| 200 | *argc_p = argc; |
| 201 | *argv_p = argv; |
| 202 | return 0; |
| 203 | } |
| 204 | |
| 205 | int |
| 206 | print_gact(struct action_util *au,FILE * f, struct rtattr *arg) |
| 207 | { |
| 208 | SPRINT_BUF(b1); |
| 209 | #ifdef CONFIG_GACT_PROB |
| 210 | SPRINT_BUF(b2); |
| 211 | struct tc_gact_p *pp = NULL; |
| 212 | struct tc_gact_p pp_dummy; |
| 213 | #endif |
| 214 | struct tc_gact *p = NULL; |
| 215 | struct rtattr *tb[TCA_GACT_MAX + 1]; |
| 216 | |
| 217 | if (arg == NULL) |
| 218 | return -1; |
| 219 | |
4!tgraf | 3b3ecd3 | 2005-01-18 22:11:58 +0000 | [diff] [blame] | 220 | parse_rtattr_nested(tb, TCA_GACT_MAX, arg); |
osdl.net!shemminger | 2265da0 | 2004-08-30 21:20:10 +0000 | [diff] [blame] | 221 | |
| 222 | if (tb[TCA_GACT_PARMS] == NULL) { |
| 223 | fprintf(f, "[NULL gact parameters]"); |
| 224 | return -1; |
| 225 | } |
| 226 | p = RTA_DATA(tb[TCA_GACT_PARMS]); |
| 227 | |
| 228 | fprintf(f, "gact action %s", action_n2a(p->action, b1, sizeof (b1))); |
| 229 | #ifdef CONFIG_GACT_PROB |
| 230 | if (NULL != tb[TCA_GACT_PROB]) { |
| 231 | pp = RTA_DATA(tb[TCA_GACT_PROB]); |
| 232 | } else { |
| 233 | /* need to keep consistent output */ |
| 234 | memset(&pp_dummy, 0, sizeof (pp_dummy)); |
| 235 | pp = &pp_dummy; |
| 236 | } |
| 237 | fprintf(f, "\n\t random type %s %s val %d",prob_n2a(pp->ptype), action_n2a(pp->paction, b2, sizeof (b2)), pp->pval); |
| 238 | #endif |
| 239 | fprintf(f, "\n\t index %d ref %d bind %d",p->index, p->refcnt, p->bindcnt); |
| 240 | if (show_stats) { |
| 241 | if (tb[TCA_GACT_TM]) { |
| 242 | struct tcf_t *tm = RTA_DATA(tb[TCA_GACT_TM]); |
| 243 | print_tm(f,tm); |
| 244 | } |
| 245 | } |
| 246 | fprintf(f, "\n "); |
| 247 | return 0; |
| 248 | } |
| 249 | |
net[shemminger]!kaber | 95812b5 | 2004-09-28 18:35:49 +0000 | [diff] [blame] | 250 | struct action_util gact_action_util = { |
osdl.net!shemminger | 2265da0 | 2004-08-30 21:20:10 +0000 | [diff] [blame] | 251 | .id = "gact", |
| 252 | .parse_aopt = parse_gact, |
| 253 | .print_aopt = print_gact, |
osdl.net!shemminger | 2265da0 | 2004-08-30 21:20:10 +0000 | [diff] [blame] | 254 | }; |