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aba5acdf SH |
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" | |
c1027a75 | 25 | #include "tc_common.h" |
aba5acdf SH |
26 | #include "tc_util.h" |
27 | ||
28 | static void explain(void) | |
29 | { | |
30 | fprintf(stderr, "Usage: ... route [ from REALM | fromif TAG ] [ to REALM ]\n"); | |
0a83e1ea | 31 | fprintf(stderr, " [ classid CLASSID ] [ action ACTION_SPEC ]\n"); |
287bf3a9 | 32 | fprintf(stderr, " ACTION_SPEC := ... look at individual actions\n"); |
aba5acdf | 33 | fprintf(stderr, " CLASSID := X:Y\n"); |
e9acc242 | 34 | fprintf(stderr, "\nNOTE: CLASSID is parsed as hexadecimal input.\n"); |
aba5acdf SH |
35 | } |
36 | ||
aba5acdf SH |
37 | static int route_parse_opt(struct filter_util *qu, char *handle, int argc, char **argv, struct nlmsghdr *n) |
38 | { | |
39 | struct tc_police tp; | |
40 | struct tcmsg *t = NLMSG_DATA(n); | |
41 | struct rtattr *tail; | |
42 | __u32 fh = 0xFFFF8000; | |
43 | __u32 order = 0; | |
44 | ||
45 | memset(&tp, 0, sizeof(tp)); | |
46 | ||
47 | if (handle) { | |
48 | if (get_u32(&t->tcm_handle, handle, 0)) { | |
49 | fprintf(stderr, "Illegal \"handle\"\n"); | |
50 | return -1; | |
51 | } | |
52 | } | |
53 | ||
54 | if (argc == 0) | |
55 | return 0; | |
56 | ||
228569c3 | 57 | tail = NLMSG_TAIL(n); |
aba5acdf SH |
58 | addattr_l(n, 4096, TCA_OPTIONS, NULL, 0); |
59 | ||
60 | while (argc > 0) { | |
61 | if (matches(*argv, "to") == 0) { | |
62 | __u32 id; | |
32a121cb | 63 | |
aba5acdf SH |
64 | NEXT_ARG(); |
65 | if (rtnl_rtrealm_a2n(&id, *argv)) { | |
66 | fprintf(stderr, "Illegal \"to\"\n"); | |
67 | return -1; | |
68 | } | |
69 | addattr_l(n, 4096, TCA_ROUTE4_TO, &id, 4); | |
70 | fh &= ~0x80FF; | |
71 | fh |= id&0xFF; | |
72 | } else if (matches(*argv, "from") == 0) { | |
73 | __u32 id; | |
32a121cb | 74 | |
aba5acdf SH |
75 | NEXT_ARG(); |
76 | if (rtnl_rtrealm_a2n(&id, *argv)) { | |
77 | fprintf(stderr, "Illegal \"from\"\n"); | |
78 | return -1; | |
79 | } | |
80 | addattr_l(n, 4096, TCA_ROUTE4_FROM, &id, 4); | |
81 | fh &= 0xFFFF; | |
82 | fh |= id<<16; | |
83 | } else if (matches(*argv, "fromif") == 0) { | |
aba5acdf | 84 | __u32 id; |
32a121cb | 85 | |
aba5acdf | 86 | NEXT_ARG(); |
c1027a75 | 87 | ll_init_map(&rth); |
32a121cb | 88 | if ((id = ll_name_to_index(*argv)) <= 0) { |
aba5acdf SH |
89 | fprintf(stderr, "Illegal \"fromif\"\n"); |
90 | return -1; | |
91 | } | |
92 | addattr_l(n, 4096, TCA_ROUTE4_IIF, &id, 4); | |
93 | fh &= 0xFFFF; | |
94 | fh |= (0x8000|id)<<16; | |
95 | } else if (matches(*argv, "classid") == 0 || | |
96 | strcmp(*argv, "flowid") == 0) { | |
32a121cb SH |
97 | unsigned int handle; |
98 | ||
aba5acdf SH |
99 | NEXT_ARG(); |
100 | if (get_tc_classid(&handle, *argv)) { | |
101 | fprintf(stderr, "Illegal \"classid\"\n"); | |
102 | return -1; | |
103 | } | |
104 | addattr_l(n, 4096, TCA_ROUTE4_CLASSID, &handle, 4); | |
105 | } else if (matches(*argv, "police") == 0) { | |
106 | NEXT_ARG(); | |
107 | if (parse_police(&argc, &argv, TCA_ROUTE4_POLICE, n)) { | |
108 | fprintf(stderr, "Illegal \"police\"\n"); | |
109 | return -1; | |
110 | } | |
111 | continue; | |
287bf3a9 JHS |
112 | } else if (matches(*argv, "action") == 0) { |
113 | NEXT_ARG(); | |
114 | if (parse_action(&argc, &argv, TCA_ROUTE4_ACT, n)) { | |
115 | fprintf(stderr, "Illegal \"action\"\n"); | |
116 | return -1; | |
117 | } | |
118 | continue; | |
aba5acdf SH |
119 | } else if (matches(*argv, "order") == 0) { |
120 | NEXT_ARG(); | |
121 | if (get_u32(&order, *argv, 0)) { | |
122 | fprintf(stderr, "Illegal \"order\"\n"); | |
123 | return -1; | |
124 | } | |
125 | } else if (strcmp(*argv, "help") == 0) { | |
126 | explain(); | |
127 | return -1; | |
128 | } else { | |
129 | fprintf(stderr, "What is \"%s\"?\n", *argv); | |
130 | explain(); | |
131 | return -1; | |
132 | } | |
133 | argc--; argv++; | |
134 | } | |
228569c3 | 135 | tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail; |
aba5acdf SH |
136 | if (order) { |
137 | fh &= ~0x7F00; | |
138 | fh |= (order<<8)&0x7F00; | |
139 | } | |
140 | if (!t->tcm_handle) | |
141 | t->tcm_handle = fh; | |
142 | return 0; | |
143 | } | |
144 | ||
145 | static int route_print_opt(struct filter_util *qu, FILE *f, struct rtattr *opt, __u32 handle) | |
146 | { | |
147 | struct rtattr *tb[TCA_ROUTE4_MAX+1]; | |
32a121cb | 148 | |
aba5acdf SH |
149 | SPRINT_BUF(b1); |
150 | ||
151 | if (opt == NULL) | |
152 | return 0; | |
153 | ||
3b3ecd31 | 154 | parse_rtattr_nested(tb, TCA_ROUTE4_MAX, opt); |
aba5acdf SH |
155 | |
156 | if (handle) | |
157 | fprintf(f, "fh 0x%08x ", handle); | |
158 | if (handle&0x7F00) | |
159 | fprintf(f, "order %d ", (handle>>8)&0x7F); | |
160 | ||
161 | if (tb[TCA_ROUTE4_CLASSID]) { | |
162 | SPRINT_BUF(b1); | |
ff24746c | 163 | fprintf(f, "flowid %s ", sprint_tc_classid(rta_getattr_u32(tb[TCA_ROUTE4_CLASSID]), b1)); |
aba5acdf SH |
164 | } |
165 | if (tb[TCA_ROUTE4_TO]) | |
ff24746c | 166 | fprintf(f, "to %s ", rtnl_rtrealm_n2a(rta_getattr_u32(tb[TCA_ROUTE4_TO]), b1, sizeof(b1))); |
aba5acdf | 167 | if (tb[TCA_ROUTE4_FROM]) |
ff24746c | 168 | fprintf(f, "from %s ", rtnl_rtrealm_n2a(rta_getattr_u32(tb[TCA_ROUTE4_FROM]), b1, sizeof(b1))); |
aba5acdf | 169 | if (tb[TCA_ROUTE4_IIF]) |
32a121cb | 170 | fprintf(f, "fromif %s", ll_index_to_name(*(int *)RTA_DATA(tb[TCA_ROUTE4_IIF]))); |
aba5acdf SH |
171 | if (tb[TCA_ROUTE4_POLICE]) |
172 | tc_print_police(f, tb[TCA_ROUTE4_POLICE]); | |
287bf3a9 JHS |
173 | if (tb[TCA_ROUTE4_ACT]) |
174 | tc_print_action(f, tb[TCA_ROUTE4_ACT]); | |
aba5acdf SH |
175 | return 0; |
176 | } | |
177 | ||
6b7dff17 SH |
178 | struct filter_util route_filter_util = { |
179 | .id = "route", | |
180 | .parse_fopt = route_parse_opt, | |
181 | .print_fopt = route_print_opt, | |
aba5acdf | 182 | }; |