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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"); | |
31 | fprintf(stderr, " [ flowid CLASSID ] [ police POLICE_SPEC ]\n"); | |
32 | fprintf(stderr, " POLICE_SPEC := ... look at TBF\n"); | |
33 | fprintf(stderr, " CLASSID := X:Y\n"); | |
34 | } | |
35 | ||
36 | #define usage() return(-1) | |
37 | ||
38 | static int route_parse_opt(struct filter_util *qu, char *handle, int argc, char **argv, struct nlmsghdr *n) | |
39 | { | |
40 | struct tc_police tp; | |
41 | struct tcmsg *t = NLMSG_DATA(n); | |
42 | struct rtattr *tail; | |
43 | __u32 fh = 0xFFFF8000; | |
44 | __u32 order = 0; | |
45 | ||
46 | memset(&tp, 0, sizeof(tp)); | |
47 | ||
48 | if (handle) { | |
49 | if (get_u32(&t->tcm_handle, handle, 0)) { | |
50 | fprintf(stderr, "Illegal \"handle\"\n"); | |
51 | return -1; | |
52 | } | |
53 | } | |
54 | ||
55 | if (argc == 0) | |
56 | return 0; | |
57 | ||
228569c3 | 58 | tail = NLMSG_TAIL(n); |
aba5acdf SH |
59 | addattr_l(n, 4096, TCA_OPTIONS, NULL, 0); |
60 | ||
61 | while (argc > 0) { | |
62 | if (matches(*argv, "to") == 0) { | |
63 | __u32 id; | |
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; | |
74 | NEXT_ARG(); | |
75 | if (rtnl_rtrealm_a2n(&id, *argv)) { | |
76 | fprintf(stderr, "Illegal \"from\"\n"); | |
77 | return -1; | |
78 | } | |
79 | addattr_l(n, 4096, TCA_ROUTE4_FROM, &id, 4); | |
80 | fh &= 0xFFFF; | |
81 | fh |= id<<16; | |
82 | } else if (matches(*argv, "fromif") == 0) { | |
aba5acdf SH |
83 | __u32 id; |
84 | NEXT_ARG(); | |
c1027a75 | 85 | ll_init_map(&rth); |
aba5acdf SH |
86 | if ((id=ll_name_to_index(*argv)) <= 0) { |
87 | fprintf(stderr, "Illegal \"fromif\"\n"); | |
88 | return -1; | |
89 | } | |
90 | addattr_l(n, 4096, TCA_ROUTE4_IIF, &id, 4); | |
91 | fh &= 0xFFFF; | |
92 | fh |= (0x8000|id)<<16; | |
93 | } else if (matches(*argv, "classid") == 0 || | |
94 | strcmp(*argv, "flowid") == 0) { | |
95 | unsigned handle; | |
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; | |
109 | } else if (matches(*argv, "order") == 0) { | |
110 | NEXT_ARG(); | |
111 | if (get_u32(&order, *argv, 0)) { | |
112 | fprintf(stderr, "Illegal \"order\"\n"); | |
113 | return -1; | |
114 | } | |
115 | } else if (strcmp(*argv, "help") == 0) { | |
116 | explain(); | |
117 | return -1; | |
118 | } else { | |
119 | fprintf(stderr, "What is \"%s\"?\n", *argv); | |
120 | explain(); | |
121 | return -1; | |
122 | } | |
123 | argc--; argv++; | |
124 | } | |
228569c3 | 125 | tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail; |
aba5acdf SH |
126 | if (order) { |
127 | fh &= ~0x7F00; | |
128 | fh |= (order<<8)&0x7F00; | |
129 | } | |
130 | if (!t->tcm_handle) | |
131 | t->tcm_handle = fh; | |
132 | return 0; | |
133 | } | |
134 | ||
135 | static int route_print_opt(struct filter_util *qu, FILE *f, struct rtattr *opt, __u32 handle) | |
136 | { | |
137 | struct rtattr *tb[TCA_ROUTE4_MAX+1]; | |
138 | SPRINT_BUF(b1); | |
139 | ||
140 | if (opt == NULL) | |
141 | return 0; | |
142 | ||
3b3ecd31 | 143 | parse_rtattr_nested(tb, TCA_ROUTE4_MAX, opt); |
aba5acdf SH |
144 | |
145 | if (handle) | |
146 | fprintf(f, "fh 0x%08x ", handle); | |
147 | if (handle&0x7F00) | |
148 | fprintf(f, "order %d ", (handle>>8)&0x7F); | |
149 | ||
150 | if (tb[TCA_ROUTE4_CLASSID]) { | |
151 | SPRINT_BUF(b1); | |
152 | fprintf(f, "flowid %s ", sprint_tc_classid(*(__u32*)RTA_DATA(tb[TCA_ROUTE4_CLASSID]), b1)); | |
153 | } | |
154 | if (tb[TCA_ROUTE4_TO]) | |
155 | fprintf(f, "to %s ", rtnl_rtrealm_n2a(*(__u32*)RTA_DATA(tb[TCA_ROUTE4_TO]), b1, sizeof(b1))); | |
156 | if (tb[TCA_ROUTE4_FROM]) | |
157 | fprintf(f, "from %s ", rtnl_rtrealm_n2a(*(__u32*)RTA_DATA(tb[TCA_ROUTE4_FROM]), b1, sizeof(b1))); | |
158 | if (tb[TCA_ROUTE4_IIF]) | |
159 | fprintf(f, "fromif %s", ll_index_to_name(*(int*)RTA_DATA(tb[TCA_ROUTE4_IIF]))); | |
160 | if (tb[TCA_ROUTE4_POLICE]) | |
161 | tc_print_police(f, tb[TCA_ROUTE4_POLICE]); | |
162 | return 0; | |
163 | } | |
164 | ||
6b7dff17 SH |
165 | struct filter_util route_filter_util = { |
166 | .id = "route", | |
167 | .parse_fopt = route_parse_opt, | |
168 | .print_fopt = route_print_opt, | |
aba5acdf | 169 | }; |