2 * m_gact.c generic actions module
4 * This program is free software; you can distribute 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: J Hadi Salim (hadi@cyberus.ca)
18 #include <sys/socket.h>
19 #include <netinet/in.h>
20 #include <arpa/inet.h>
25 #include <linux/tc_act/tc_gact.h>
27 /* define to turn on probablity stuff */
29 #ifdef CONFIG_GACT_PROB
30 static const char *prob_n2a(int p
)
34 if (p
== PGACT_NETRAND
)
36 if (p
== PGACT_DETERM
)
45 #ifdef CONFIG_GACT_PROB
46 fprintf(stderr
, "Usage: ... gact <ACTION> [RAND] [INDEX]\n");
48 "Where: ACTION := reclassify | drop | continue | pass "
49 "RAND := random <RANDTYPE> <ACTION> <VAL>"
50 "RANDTYPE := netrand | determ"
51 "VAL : = value not exceeding 10000"
52 "INDEX := index value used"
55 fprintf(stderr
, "Usage: ... gact <ACTION> [INDEX]\n");
57 "Where: ACTION := reclassify | drop | continue | pass "
58 "INDEX := index value used"
63 #define usage() return(-1)
66 get_act(char ***argv_p
)
68 char **argv
= *argv_p
;
70 if (matches(*argv
, "reclassify") == 0) {
71 return TC_ACT_RECLASSIFY
;
72 } else if (matches(*argv
, "drop") == 0 || matches(*argv
, "shot") == 0) {
74 } else if (matches(*argv
, "continue") == 0) {
76 } else if (matches(*argv
, "pipe") == 0) {
78 } else if (matches(*argv
, "pass") == 0 || matches(*argv
, "ok") == 0) {
81 fprintf(stderr
,"bad action type %s\n",*argv
);
87 parse_gact(struct action_util
*a
, int *argc_p
, char ***argv_p
, int tca_id
, struct nlmsghdr
*n
)
90 char **argv
= *argv_p
;
92 int action
= TC_POLICE_RECLASSIFY
;
94 #ifdef CONFIG_GACT_PROB
100 memset(&p
, 0, sizeof (p
));
101 p
.action
= TC_POLICE_RECLASSIFY
;
107 if (matches(*argv
, "gact") == 0) {
110 action
= get_act(&argv
);
125 #ifdef CONFIG_GACT_PROB
126 if (ok
&& argc
> 0) {
127 if (matches(*argv
, "random") == 0) {
130 if (matches(*argv
, "netrand") == 0) {
132 pp
.ptype
= PGACT_NETRAND
;
133 } else if (matches(*argv
, "determ") == 0) {
135 pp
.ptype
= PGACT_DETERM
;
137 fprintf(stderr
, "Illegal \"random type\"\n");
141 action
= get_act(&argv
);
142 if (action
!= -10) { /* FIXME */
150 if (get_u16(&pp
.pval
, *argv
, 10)) {
151 fprintf(stderr
, "Illegal probability val 0x%x\n",pp
.pval
);
154 if (pp
.pval
> 10000) {
155 fprintf(stderr
, "Illegal probability val 0x%x\n",pp
.pval
);
165 if (matches(*argv
, "index") == 0) {
167 if (get_u32(&p
.index
, *argv
, 10)) {
168 fprintf(stderr
, "Illegal \"index\"\n");
180 tail
= NLMSG_TAIL(n
);
181 addattr_l(n
, MAX_MSG
, tca_id
, NULL
, 0);
182 addattr_l(n
, MAX_MSG
, TCA_GACT_PARMS
, &p
, sizeof (p
));
183 #ifdef CONFIG_GACT_PROB
185 addattr_l(n
, MAX_MSG
, TCA_GACT_PROB
, &pp
, sizeof (pp
));
188 tail
->rta_len
= (void *) NLMSG_TAIL(n
) - (void *) tail
;
196 print_gact(struct action_util
*au
,FILE * f
, struct rtattr
*arg
)
199 #ifdef CONFIG_GACT_PROB
201 struct tc_gact_p
*pp
= NULL
;
202 struct tc_gact_p pp_dummy
;
204 struct tc_gact
*p
= NULL
;
205 struct rtattr
*tb
[TCA_GACT_MAX
+ 1];
210 parse_rtattr_nested(tb
, TCA_GACT_MAX
, arg
);
212 if (tb
[TCA_GACT_PARMS
] == NULL
) {
213 fprintf(f
, "[NULL gact parameters]");
216 p
= RTA_DATA(tb
[TCA_GACT_PARMS
]);
218 fprintf(f
, "gact action %s", action_n2a(p
->action
, b1
, sizeof (b1
)));
219 #ifdef CONFIG_GACT_PROB
220 if (NULL
!= tb
[TCA_GACT_PROB
]) {
221 pp
= RTA_DATA(tb
[TCA_GACT_PROB
]);
223 /* need to keep consistent output */
224 memset(&pp_dummy
, 0, sizeof (pp_dummy
));
227 fprintf(f
, "\n\t random type %s %s val %d",prob_n2a(pp
->ptype
), action_n2a(pp
->paction
, b2
, sizeof (b2
)), pp
->pval
);
229 fprintf(f
, "\n\t index %d ref %d bind %d",p
->index
, p
->refcnt
, p
->bindcnt
);
231 if (tb
[TCA_GACT_TM
]) {
232 struct tcf_t
*tm
= RTA_DATA(tb
[TCA_GACT_TM
]);
240 struct action_util gact_action_util
= {
242 .parse_aopt
= parse_gact
,
243 .print_aopt
= print_gact
,