2 * m_vlan.c vlan manipulation module
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.
9 * Authors: Jiri Pirko <jiri@resnulli.us>
16 #include <linux/if_ether.h>
20 #include <linux/tc_act/tc_vlan.h>
22 static const char * const action_names
[] = {
23 [TCA_VLAN_ACT_POP
] = "pop",
24 [TCA_VLAN_ACT_PUSH
] = "push",
25 [TCA_VLAN_ACT_MODIFY
] = "modify",
28 static void explain(void)
32 " vlan push [ protocol VLANPROTO ] id VLANID [ priority VLANPRIO ] [CONTROL]\n"
33 " vlan modify [ protocol VLANPROTO ] id VLANID [ priority VLANPRIO ] [CONTROL]\n"
34 " VLANPROTO is one of 802.1Q or 802.1AD\n"
35 " with default: 802.1Q\n"
36 " CONTROL := reclassify | pipe | drop | continue | pass |\n"
37 " goto chain <CHAIN_INDEX>\n");
40 static void usage(void)
46 static bool has_push_attribs(int action
)
48 return action
== TCA_VLAN_ACT_PUSH
|| action
== TCA_VLAN_ACT_MODIFY
;
51 static void unexpected(const char *arg
)
54 "unexpected \"%s\" - action already specified\n",
59 static int parse_vlan(struct action_util
*a
, int *argc_p
, char ***argv_p
,
60 int tca_id
, struct nlmsghdr
*n
)
63 char **argv
= *argv_p
;
72 struct tc_vlan parm
= {};
74 if (matches(*argv
, "vlan") != 0)
80 if (matches(*argv
, "pop") == 0) {
85 action
= TCA_VLAN_ACT_POP
;
86 } else if (matches(*argv
, "push") == 0) {
91 action
= TCA_VLAN_ACT_PUSH
;
92 } else if (matches(*argv
, "modify") == 0) {
97 action
= TCA_VLAN_ACT_MODIFY
;
98 } else if (matches(*argv
, "id") == 0) {
99 if (!has_push_attribs(action
))
100 invarg("only valid for push/modify", *argv
);
103 if (get_u16(&id
, *argv
, 0))
104 invarg("id is invalid", *argv
);
106 } else if (matches(*argv
, "protocol") == 0) {
107 if (!has_push_attribs(action
))
108 invarg("only valid for push/modify", *argv
);
111 if (ll_proto_a2n(&proto
, *argv
))
112 invarg("protocol is invalid", *argv
);
114 } else if (matches(*argv
, "priority") == 0) {
115 if (!has_push_attribs(action
))
116 invarg("only valid for push/modify", *argv
);
119 if (get_u8(&prio
, *argv
, 0) || (prio
& ~0x7))
120 invarg("prio is invalid", *argv
);
122 } else if (matches(*argv
, "help") == 0) {
131 parse_action_control_dflt(&argc
, &argv
, &parm
.action
,
135 if (matches(*argv
, "index") == 0) {
137 if (get_u32(&parm
.index
, *argv
, 10)) {
138 fprintf(stderr
, "vlan: Illegal \"index\"\n");
146 if (has_push_attribs(action
) && !id_set
) {
147 fprintf(stderr
, "id needs to be set for %s\n",
148 action_names
[action
]);
153 parm
.v_action
= action
;
154 tail
= addattr_nest(n
, MAX_MSG
, tca_id
);
155 addattr_l(n
, MAX_MSG
, TCA_VLAN_PARMS
, &parm
, sizeof(parm
));
157 addattr_l(n
, MAX_MSG
, TCA_VLAN_PUSH_VLAN_ID
, &id
, 2);
159 if (proto
!= htons(ETH_P_8021Q
) &&
160 proto
!= htons(ETH_P_8021AD
)) {
161 fprintf(stderr
, "protocol not supported\n");
166 addattr_l(n
, MAX_MSG
, TCA_VLAN_PUSH_VLAN_PROTOCOL
, &proto
, 2);
169 addattr8(n
, MAX_MSG
, TCA_VLAN_PUSH_VLAN_PRIORITY
, prio
);
171 addattr_nest_end(n
, tail
);
178 static int print_vlan(struct action_util
*au
, FILE *f
, struct rtattr
*arg
)
181 struct rtattr
*tb
[TCA_VLAN_MAX
+ 1];
183 struct tc_vlan
*parm
;
188 parse_rtattr_nested(tb
, TCA_VLAN_MAX
, arg
);
190 if (!tb
[TCA_VLAN_PARMS
]) {
191 fprintf(stderr
, "Missing vlanparameters\n");
194 parm
= RTA_DATA(tb
[TCA_VLAN_PARMS
]);
196 print_string(PRINT_ANY
, "kind", "%s ", "vlan");
197 print_string(PRINT_ANY
, "vlan_action", " %s",
198 action_names
[parm
->v_action
]);
200 switch (parm
->v_action
) {
201 case TCA_VLAN_ACT_PUSH
:
202 case TCA_VLAN_ACT_MODIFY
:
203 if (tb
[TCA_VLAN_PUSH_VLAN_ID
]) {
204 val
= rta_getattr_u16(tb
[TCA_VLAN_PUSH_VLAN_ID
]);
205 print_uint(PRINT_ANY
, "id", " id %u", val
);
207 if (tb
[TCA_VLAN_PUSH_VLAN_PROTOCOL
]) {
210 proto
= rta_getattr_u16(tb
[TCA_VLAN_PUSH_VLAN_PROTOCOL
]);
211 print_string(PRINT_ANY
, "protocol", " protocol %s",
212 ll_proto_n2a(proto
, b1
, sizeof(b1
)));
214 if (tb
[TCA_VLAN_PUSH_VLAN_PRIORITY
]) {
215 val
= rta_getattr_u8(tb
[TCA_VLAN_PUSH_VLAN_PRIORITY
]);
216 print_uint(PRINT_ANY
, "priority", " priority %u", val
);
220 print_action_control(f
, " ", parm
->action
, "");
222 print_uint(PRINT_ANY
, "index", "\n\t index %u", parm
->index
);
223 print_int(PRINT_ANY
, "ref", " ref %d", parm
->refcnt
);
224 print_int(PRINT_ANY
, "bind", " bind %d", parm
->bindcnt
);
227 if (tb
[TCA_VLAN_TM
]) {
228 struct tcf_t
*tm
= RTA_DATA(tb
[TCA_VLAN_TM
]);
234 print_string(PRINT_FP
, NULL
, "%s", "\n");
239 struct action_util vlan_action_util
= {
241 .parse_aopt
= parse_vlan
,
242 .print_aopt
= print_vlan
,