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8b1c0216 JP |
1 | /* |
2 | * m_vlan.c vlan manipulation module | |
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: Jiri Pirko <jiri@resnulli.us> | |
10 | */ | |
11 | ||
12 | #include <stdio.h> | |
13 | #include <stdlib.h> | |
14 | #include <unistd.h> | |
15 | #include <string.h> | |
16 | #include <linux/if_ether.h> | |
17 | #include "utils.h" | |
18 | #include "rt_names.h" | |
19 | #include "tc_util.h" | |
20 | #include <linux/tc_act/tc_vlan.h> | |
21 | ||
22 | static void explain(void) | |
23 | { | |
24 | fprintf(stderr, "Usage: vlan pop\n"); | |
0e43ed9d | 25 | fprintf(stderr, " vlan push [ protocol VLANPROTO ] id VLANID [ priority VLANPRIO ] [CONTROL]\n"); |
8b1c0216 JP |
26 | fprintf(stderr, " VLANPROTO is one of 802.1Q or 802.1AD\n"); |
27 | fprintf(stderr, " with default: 802.1Q\n"); | |
51011dac | 28 | fprintf(stderr, " CONTROL := reclassify | pipe | drop | continue | pass\n"); |
8b1c0216 JP |
29 | } |
30 | ||
31 | static void usage(void) | |
32 | { | |
33 | explain(); | |
34 | exit(-1); | |
35 | } | |
36 | ||
37 | static int parse_vlan(struct action_util *a, int *argc_p, char ***argv_p, | |
38 | int tca_id, struct nlmsghdr *n) | |
39 | { | |
40 | int argc = *argc_p; | |
41 | char **argv = *argv_p; | |
42 | struct rtattr *tail; | |
43 | int action = 0; | |
44 | __u16 id; | |
45 | int id_set = 0; | |
46 | __u16 proto; | |
47 | int proto_set = 0; | |
0e43ed9d HHZ |
48 | __u8 prio; |
49 | int prio_set = 0; | |
8b1c0216 JP |
50 | struct tc_vlan parm = { 0 }; |
51 | ||
52 | if (matches(*argv, "vlan") != 0) | |
53 | return -1; | |
54 | ||
55 | NEXT_ARG(); | |
56 | ||
57 | while (argc > 0) { | |
58 | if (matches(*argv, "pop") == 0) { | |
59 | if (action) { | |
60 | fprintf(stderr, "unexpected \"%s\" - action already specified\n", | |
61 | *argv); | |
62 | explain(); | |
63 | return -1; | |
64 | } | |
65 | action = TCA_VLAN_ACT_POP; | |
66 | } else if (matches(*argv, "push") == 0) { | |
67 | if (action) { | |
68 | fprintf(stderr, "unexpected \"%s\" - action already specified\n", | |
69 | *argv); | |
70 | explain(); | |
71 | return -1; | |
72 | } | |
73 | action = TCA_VLAN_ACT_PUSH; | |
74 | } else if (matches(*argv, "id") == 0) { | |
75 | if (action != TCA_VLAN_ACT_PUSH) { | |
76 | fprintf(stderr, "\"%s\" is only valid for push\n", | |
77 | *argv); | |
78 | explain(); | |
79 | return -1; | |
80 | } | |
81 | NEXT_ARG(); | |
82 | if (get_u16(&id, *argv, 0)) | |
83 | invarg("id is invalid", *argv); | |
84 | id_set = 1; | |
85 | } else if (matches(*argv, "protocol") == 0) { | |
86 | if (action != TCA_VLAN_ACT_PUSH) { | |
87 | fprintf(stderr, "\"%s\" is only valid for push\n", | |
88 | *argv); | |
89 | explain(); | |
90 | return -1; | |
91 | } | |
92 | NEXT_ARG(); | |
93 | if (ll_proto_a2n(&proto, *argv)) | |
94 | invarg("protocol is invalid", *argv); | |
95 | proto_set = 1; | |
0e43ed9d HHZ |
96 | } else if (matches(*argv, "priority") == 0) { |
97 | if (action != TCA_VLAN_ACT_PUSH) { | |
98 | fprintf(stderr, "\"%s\" is only valid for push\n", | |
99 | *argv); | |
100 | explain(); | |
101 | return -1; | |
102 | } | |
103 | NEXT_ARG(); | |
104 | if (get_u8(&prio, *argv, 0) || (prio & ~0x7)) | |
105 | invarg("prio is invalid", *argv); | |
106 | prio_set = 1; | |
8b1c0216 JP |
107 | } else if (matches(*argv, "help") == 0) { |
108 | usage(); | |
109 | } else { | |
110 | break; | |
111 | } | |
112 | argc--; | |
113 | argv++; | |
114 | } | |
115 | ||
116 | parm.action = TC_ACT_PIPE; | |
69f5aff6 PS |
117 | if (argc && !action_a2n(*argv, &parm.action, false)) |
118 | NEXT_ARG_FWD(); | |
8b1c0216 JP |
119 | |
120 | if (argc) { | |
121 | if (matches(*argv, "index") == 0) { | |
122 | NEXT_ARG(); | |
123 | if (get_u32(&parm.index, *argv, 10)) { | |
124 | fprintf(stderr, "vlan: Illegal \"index\"\n"); | |
125 | return -1; | |
126 | } | |
127 | argc--; | |
128 | argv++; | |
129 | } | |
130 | } | |
131 | ||
132 | if (action == TCA_VLAN_ACT_PUSH && !id_set) { | |
133 | fprintf(stderr, "id needs to be set for push\n"); | |
134 | explain(); | |
135 | return -1; | |
136 | } | |
137 | ||
138 | parm.v_action = action; | |
139 | tail = NLMSG_TAIL(n); | |
140 | addattr_l(n, MAX_MSG, tca_id, NULL, 0); | |
141 | addattr_l(n, MAX_MSG, TCA_VLAN_PARMS, &parm, sizeof(parm)); | |
142 | if (id_set) | |
143 | addattr_l(n, MAX_MSG, TCA_VLAN_PUSH_VLAN_ID, &id, 2); | |
144 | if (proto_set) { | |
145 | if (proto != htons(ETH_P_8021Q) && | |
146 | proto != htons(ETH_P_8021AD)) { | |
147 | fprintf(stderr, "protocol not supported\n"); | |
148 | explain(); | |
149 | return -1; | |
150 | } | |
151 | ||
152 | addattr_l(n, MAX_MSG, TCA_VLAN_PUSH_VLAN_PROTOCOL, &proto, 2); | |
153 | } | |
0e43ed9d HHZ |
154 | if (prio_set) |
155 | addattr8(n, MAX_MSG, TCA_VLAN_PUSH_VLAN_PRIORITY, prio); | |
156 | ||
8b1c0216 JP |
157 | tail->rta_len = (char *)NLMSG_TAIL(n) - (char *)tail; |
158 | ||
159 | *argc_p = argc; | |
160 | *argv_p = argv; | |
161 | return 0; | |
162 | } | |
163 | ||
164 | static int print_vlan(struct action_util *au, FILE *f, struct rtattr *arg) | |
165 | { | |
166 | SPRINT_BUF(b1); | |
167 | struct rtattr *tb[TCA_VLAN_MAX + 1]; | |
168 | __u16 val; | |
169 | struct tc_vlan *parm; | |
170 | ||
171 | if (arg == NULL) | |
172 | return -1; | |
173 | ||
174 | parse_rtattr_nested(tb, TCA_VLAN_MAX, arg); | |
175 | ||
176 | if (!tb[TCA_VLAN_PARMS]) { | |
177 | fprintf(f, "[NULL vlan parameters]"); | |
178 | return -1; | |
179 | } | |
180 | parm = RTA_DATA(tb[TCA_VLAN_PARMS]); | |
181 | ||
182 | fprintf(f, " vlan"); | |
183 | ||
32a121cb | 184 | switch (parm->v_action) { |
8b1c0216 JP |
185 | case TCA_VLAN_ACT_POP: |
186 | fprintf(f, " pop"); | |
187 | break; | |
188 | case TCA_VLAN_ACT_PUSH: | |
189 | fprintf(f, " push"); | |
190 | if (tb[TCA_VLAN_PUSH_VLAN_ID]) { | |
191 | val = rta_getattr_u16(tb[TCA_VLAN_PUSH_VLAN_ID]); | |
192 | fprintf(f, " id %u", val); | |
193 | } | |
194 | if (tb[TCA_VLAN_PUSH_VLAN_PROTOCOL]) { | |
195 | fprintf(f, " protocol %s", | |
196 | ll_proto_n2a(rta_getattr_u16(tb[TCA_VLAN_PUSH_VLAN_PROTOCOL]), | |
197 | b1, sizeof(b1))); | |
198 | } | |
0e43ed9d HHZ |
199 | if (tb[TCA_VLAN_PUSH_VLAN_PRIORITY]) { |
200 | val = rta_getattr_u8(tb[TCA_VLAN_PUSH_VLAN_PRIORITY]); | |
201 | fprintf(f, " priority %u", val); | |
202 | } | |
8b1c0216 JP |
203 | break; |
204 | } | |
70932006 | 205 | fprintf(f, " %s", action_n2a(parm->action)); |
8b1c0216 JP |
206 | |
207 | fprintf(f, "\n\t index %d ref %d bind %d", parm->index, parm->refcnt, | |
208 | parm->bindcnt); | |
209 | ||
210 | if (show_stats) { | |
211 | if (tb[TCA_VLAN_TM]) { | |
212 | struct tcf_t *tm = RTA_DATA(tb[TCA_VLAN_TM]); | |
32a121cb | 213 | |
8b1c0216 JP |
214 | print_tm(f, tm); |
215 | } | |
216 | } | |
217 | ||
218 | fprintf(f, "\n "); | |
219 | ||
220 | return 0; | |
221 | } | |
222 | ||
223 | struct action_util vlan_action_util = { | |
224 | .id = "vlan", | |
225 | .parse_aopt = parse_vlan, | |
226 | .print_aopt = print_vlan, | |
227 | }; |