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13#include <stdio.h>
14#include <stdlib.h>
15#include <unistd.h>
16#include <fcntl.h>
17#include <sys/socket.h>
18#include <netinet/in.h>
19#include <arpa/inet.h>
20#include <string.h>
21
22#include "utils.h"
23#include "rt_names.h"
24#include "tc_common.h"
25#include "tc_util.h"
26
27static void explain(void)
28{
29 fprintf(stderr,
30 "Usage: ... route [ from REALM | fromif TAG ] [ to REALM ]\n"
31 " [ classid CLASSID ] [ action ACTION_SPEC ]\n"
32 " ACTION_SPEC := ... look at individual actions\n"
33 " CLASSID := X:Y\n"
34 "\n"
35 "NOTE: CLASSID is parsed as hexadecimal input.\n");
36}
37
38static int route_parse_opt(struct filter_util *qu, char *handle, int argc, char **argv, struct nlmsghdr *n)
39{
40 struct tcmsg *t = NLMSG_DATA(n);
41 struct rtattr *tail;
42 __u32 fh = 0xFFFF8000;
43 __u32 order = 0;
44
45 if (handle) {
46 if (get_u32(&t->tcm_handle, handle, 0)) {
47 fprintf(stderr, "Illegal \"handle\"\n");
48 return -1;
49 }
50 }
51
52 if (argc == 0)
53 return 0;
54
55 tail = addattr_nest(n, 4096, TCA_OPTIONS);
56
57 while (argc > 0) {
58 if (matches(*argv, "to") == 0) {
59 __u32 id;
60
61 NEXT_ARG();
62 if (rtnl_rtrealm_a2n(&id, *argv)) {
63 fprintf(stderr, "Illegal \"to\"\n");
64 return -1;
65 }
66 addattr_l(n, 4096, TCA_ROUTE4_TO, &id, 4);
67 fh &= ~0x80FF;
68 fh |= id&0xFF;
69 } else if (matches(*argv, "from") == 0) {
70 __u32 id;
71
72 NEXT_ARG();
73 if (rtnl_rtrealm_a2n(&id, *argv)) {
74 fprintf(stderr, "Illegal \"from\"\n");
75 return -1;
76 }
77 addattr_l(n, 4096, TCA_ROUTE4_FROM, &id, 4);
78 fh &= 0xFFFF;
79 fh |= id<<16;
80 } else if (matches(*argv, "fromif") == 0) {
81 __u32 id;
82
83 NEXT_ARG();
84 ll_init_map(&rth);
85 if ((id = ll_name_to_index(*argv)) <= 0) {
86 fprintf(stderr, "Illegal \"fromif\"\n");
87 return -1;
88 }
89 addattr_l(n, 4096, TCA_ROUTE4_IIF, &id, 4);
90 fh &= 0xFFFF;
91 fh |= (0x8000|id)<<16;
92 } else if (matches(*argv, "classid") == 0 ||
93 strcmp(*argv, "flowid") == 0) {
94 unsigned int handle;
95
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, "action") == 0) {
110 NEXT_ARG();
111 if (parse_action(&argc, &argv, TCA_ROUTE4_ACT, n)) {
112 fprintf(stderr, "Illegal \"action\"\n");
113 return -1;
114 }
115 continue;
116 } else if (matches(*argv, "order") == 0) {
117 NEXT_ARG();
118 if (get_u32(&order, *argv, 0)) {
119 fprintf(stderr, "Illegal \"order\"\n");
120 return -1;
121 }
122 } else if (strcmp(*argv, "help") == 0) {
123 explain();
124 return -1;
125 } else {
126 fprintf(stderr, "What is \"%s\"?\n", *argv);
127 explain();
128 return -1;
129 }
130 argc--; argv++;
131 }
132 addattr_nest_end(n, tail);
133 if (order) {
134 fh &= ~0x7F00;
135 fh |= (order<<8)&0x7F00;
136 }
137 if (!t->tcm_handle)
138 t->tcm_handle = fh;
139 return 0;
140}
141
142static int route_print_opt(struct filter_util *qu, FILE *f, struct rtattr *opt, __u32 handle)
143{
144 struct rtattr *tb[TCA_ROUTE4_MAX+1];
145
146 SPRINT_BUF(b1);
147
148 if (opt == NULL)
149 return 0;
150
151 parse_rtattr_nested(tb, TCA_ROUTE4_MAX, opt);
152
153 if (handle)
154 fprintf(f, "fh 0x%08x ", handle);
155 if (handle&0x7F00)
156 fprintf(f, "order %d ", (handle>>8)&0x7F);
157
158 if (tb[TCA_ROUTE4_CLASSID]) {
159 SPRINT_BUF(b1);
160 fprintf(f, "flowid %s ", sprint_tc_classid(rta_getattr_u32(tb[TCA_ROUTE4_CLASSID]), b1));
161 }
162 if (tb[TCA_ROUTE4_TO])
163 fprintf(f, "to %s ", rtnl_rtrealm_n2a(rta_getattr_u32(tb[TCA_ROUTE4_TO]), b1, sizeof(b1)));
164 if (tb[TCA_ROUTE4_FROM])
165 fprintf(f, "from %s ", rtnl_rtrealm_n2a(rta_getattr_u32(tb[TCA_ROUTE4_FROM]), b1, sizeof(b1)));
166 if (tb[TCA_ROUTE4_IIF])
167 fprintf(f, "fromif %s", ll_index_to_name(rta_getattr_u32(tb[TCA_ROUTE4_IIF])));
168 if (tb[TCA_ROUTE4_POLICE])
169 tc_print_police(f, tb[TCA_ROUTE4_POLICE]);
170 if (tb[TCA_ROUTE4_ACT])
171 tc_print_action(f, tb[TCA_ROUTE4_ACT], 0);
172 return 0;
173}
174
175struct filter_util route_filter_util = {
176 .id = "route",
177 .parse_fopt = route_parse_opt,
178 .print_fopt = route_print_opt,
179};
180
