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Commit | Line | Data |
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2265da08 | 1 | /* |
ae665a52 | 2 | * m_gact.c generic actions module |
2265da08 SH |
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 | * | |
ae665a52 SH |
9 | * Authors: J Hadi Salim (hadi@cyberus.ca) |
10 | * | |
2265da08 SH |
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 | |
ae665a52 | 30 | static const char *prob_n2a(int p) |
2265da08 SH |
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, | |
d19f72f7 JP |
48 | "Where: \tACTION := reclassify | drop | continue | pass | pipe |\n" |
49 | " \t goto chain <CHAIN_INDEX>\n" | |
32a121cb SH |
50 | "\tRAND := random <RANDTYPE> <ACTION> <VAL>\n" |
51 | "\tRANDTYPE := netrand | determ\n" | |
ebf32083 JHS |
52 | "\tVAL : = value not exceeding 10000\n" |
53 | "\tINDEX := index value used\n" | |
302d3fb7 | 54 | "\n"); |
2265da08 SH |
55 | #else |
56 | fprintf(stderr, "Usage: ... gact <ACTION> [INDEX]\n"); | |
57 | fprintf(stderr, | |
d19f72f7 JP |
58 | "Where: \tACTION := reclassify | drop | continue | pass | pipe |\n" |
59 | " \t goto chain <CHAIN_INDEX>\n" | |
ebf32083 | 60 | "\tINDEX := index value used\n" |
f1e4f042 | 61 | "\n"); |
2265da08 SH |
62 | #endif |
63 | } | |
64 | ||
302d3fb7 | 65 | |
ebf32083 JHS |
66 | static void |
67 | usage(void) | |
68 | { | |
69 | explain(); | |
70 | exit(-1); | |
71 | } | |
72 | ||
d1f28cf1 SH |
73 | static int |
74 | parse_gact(struct action_util *a, int *argc_p, char ***argv_p, | |
75 | int tca_id, struct nlmsghdr *n) | |
2265da08 SH |
76 | { |
77 | int argc = *argc_p; | |
78 | char **argv = *argv_p; | |
79 | int ok = 0; | |
e67aba55 | 80 | struct tc_gact p = { 0 }; |
2265da08 SH |
81 | #ifdef CONFIG_GACT_PROB |
82 | int rd = 0; | |
83 | struct tc_gact_p pp; | |
84 | #endif | |
85 | struct rtattr *tail; | |
86 | ||
2265da08 SH |
87 | if (argc < 0) |
88 | return -1; | |
89 | ||
90 | ||
91 | if (matches(*argv, "gact") == 0) { | |
92 | ok++; | |
18f05d06 JP |
93 | argc--; |
94 | argv++; | |
2265da08 | 95 | } else { |
e67aba55 JP |
96 | if (parse_action_control(&argc, &argv, &p.action, false) == -1) |
97 | usage(); | |
98 | ok++; | |
2265da08 SH |
99 | } |
100 | ||
2265da08 SH |
101 | #ifdef CONFIG_GACT_PROB |
102 | if (ok && argc > 0) { | |
103 | if (matches(*argv, "random") == 0) { | |
104 | rd = 1; | |
105 | NEXT_ARG(); | |
106 | if (matches(*argv, "netrand") == 0) { | |
107 | NEXT_ARG(); | |
108 | pp.ptype = PGACT_NETRAND; | |
109 | } else if (matches(*argv, "determ") == 0) { | |
110 | NEXT_ARG(); | |
111 | pp.ptype = PGACT_DETERM; | |
112 | } else { | |
113 | fprintf(stderr, "Illegal \"random type\"\n"); | |
114 | return -1; | |
115 | } | |
116 | ||
e67aba55 JP |
117 | if (parse_action_control(&argc, &argv, |
118 | &pp.paction, false) == -1) | |
119 | usage(); | |
2265da08 | 120 | if (get_u16(&pp.pval, *argv, 10)) { |
32a121cb | 121 | fprintf(stderr, "Illegal probability val 0x%x\n", pp.pval); |
2265da08 SH |
122 | return -1; |
123 | } | |
124 | if (pp.pval > 10000) { | |
32a121cb | 125 | fprintf(stderr, "Illegal probability val 0x%x\n", pp.pval); |
2265da08 SH |
126 | return -1; |
127 | } | |
128 | argc--; | |
129 | argv++; | |
ebf32083 JHS |
130 | } else if (matches(*argv, "help") == 0) { |
131 | usage(); | |
2265da08 SH |
132 | } |
133 | } | |
134 | #endif | |
135 | ||
136 | if (argc > 0) { | |
137 | if (matches(*argv, "index") == 0) { | |
138 | NEXT_ARG(); | |
139 | if (get_u32(&p.index, *argv, 10)) { | |
140 | fprintf(stderr, "Illegal \"index\"\n"); | |
141 | return -1; | |
142 | } | |
143 | argc--; | |
144 | argv++; | |
145 | ok++; | |
f1e4f042 | 146 | } else if (matches(*argv, "help") == 0) { |
302d3fb7 | 147 | usage(); |
2265da08 SH |
148 | } |
149 | } | |
150 | ||
151 | if (!ok) | |
152 | return -1; | |
153 | ||
228569c3 | 154 | tail = NLMSG_TAIL(n); |
2265da08 | 155 | addattr_l(n, MAX_MSG, tca_id, NULL, 0); |
32a121cb | 156 | addattr_l(n, MAX_MSG, TCA_GACT_PARMS, &p, sizeof(p)); |
2265da08 SH |
157 | #ifdef CONFIG_GACT_PROB |
158 | if (rd) { | |
32a121cb | 159 | addattr_l(n, MAX_MSG, TCA_GACT_PROB, &pp, sizeof(pp)); |
2265da08 SH |
160 | } |
161 | #endif | |
228569c3 | 162 | tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail; |
2265da08 SH |
163 | |
164 | *argc_p = argc; | |
165 | *argv_p = argv; | |
166 | return 0; | |
167 | } | |
168 | ||
d1f28cf1 | 169 | static int |
32a121cb | 170 | print_gact(struct action_util *au, FILE * f, struct rtattr *arg) |
2265da08 | 171 | { |
2265da08 | 172 | #ifdef CONFIG_GACT_PROB |
2265da08 SH |
173 | struct tc_gact_p *pp = NULL; |
174 | struct tc_gact_p pp_dummy; | |
175 | #endif | |
176 | struct tc_gact *p = NULL; | |
177 | struct rtattr *tb[TCA_GACT_MAX + 1]; | |
178 | ||
179 | if (arg == NULL) | |
180 | return -1; | |
181 | ||
3b3ecd31 | 182 | parse_rtattr_nested(tb, TCA_GACT_MAX, arg); |
2265da08 SH |
183 | |
184 | if (tb[TCA_GACT_PARMS] == NULL) { | |
185 | fprintf(f, "[NULL gact parameters]"); | |
186 | return -1; | |
187 | } | |
188 | p = RTA_DATA(tb[TCA_GACT_PARMS]); | |
189 | ||
e67aba55 JP |
190 | fprintf(f, "gact "); |
191 | print_action_control(f, "action ", p->action, ""); | |
2265da08 | 192 | #ifdef CONFIG_GACT_PROB |
32a121cb | 193 | if (tb[TCA_GACT_PROB] != NULL) { |
2265da08 SH |
194 | pp = RTA_DATA(tb[TCA_GACT_PROB]); |
195 | } else { | |
196 | /* need to keep consistent output */ | |
32a121cb | 197 | memset(&pp_dummy, 0, sizeof(pp_dummy)); |
2265da08 SH |
198 | pp = &pp_dummy; |
199 | } | |
e67aba55 JP |
200 | fprintf(f, "\n\t random type %s", prob_n2a(pp->ptype)); |
201 | print_action_control(f, " ", pp->paction, " "); | |
202 | fprintf(f, "val %d", pp->pval); | |
2265da08 | 203 | #endif |
53075318 RM |
204 | fprintf(f, "\n\t index %u ref %d bind %d", p->index, p->refcnt, |
205 | p->bindcnt); | |
2265da08 SH |
206 | if (show_stats) { |
207 | if (tb[TCA_GACT_TM]) { | |
208 | struct tcf_t *tm = RTA_DATA(tb[TCA_GACT_TM]); | |
32a121cb SH |
209 | |
210 | print_tm(f, tm); | |
2265da08 SH |
211 | } |
212 | } | |
213 | fprintf(f, "\n "); | |
214 | return 0; | |
215 | } | |
216 | ||
95812b56 | 217 | struct action_util gact_action_util = { |
2265da08 SH |
218 | .id = "gact", |
219 | .parse_aopt = parse_gact, | |
220 | .print_aopt = print_gact, | |
2265da08 | 221 | }; |