2 * f_tcindex.c Traffic control index filter
4 * Written 1998,1999 by Werner Almesberger
13 #include <netinet/in.h>
18 static void explain(void)
20 fprintf(stderr," Usage: ... tcindex [ hash SIZE ] [ mask MASK ]"
21 " [ shift SHIFT ]\n");
22 fprintf(stderr," [ pass_on | fall_through ]\n");
23 fprintf(stderr," [ classid CLASSID ] "
24 "[ police POLICE_SPEC ]\n");
27 static int tcindex_parse_opt(struct filter_util *qu, char *handle, int argc,
28 char **argv, struct nlmsghdr *n)
30 struct tcmsg *t = NLMSG_DATA(n);
35 t->tcm_handle = strtoul(handle,&end,0);
37 fprintf(stderr, "Illegal filter ID\n");
43 addattr_l(n,4096,TCA_OPTIONS,NULL,0);
45 if (!strcmp(*argv,"hash")) {
49 hash = strtoul(*argv,&end,0);
50 if (*end || !hash || hash > 0x10000) {
54 addattr_l(n,4096,TCA_TCINDEX_HASH,&hash,sizeof(hash));
56 else if (!strcmp(*argv,"mask")) {
60 mask = strtoul(*argv,&end,0);
65 addattr_l(n,4096,TCA_TCINDEX_MASK,&mask,sizeof(mask));
67 else if (!strcmp(*argv,"shift")) {
71 shift = strtoul(*argv,&end,0);
76 addattr_l(n,4096,TCA_TCINDEX_SHIFT,&shift,
79 else if (!strcmp(*argv,"fall_through")) {
82 addattr_l(n,4096,TCA_TCINDEX_FALL_THROUGH,&value,
85 else if (!strcmp(*argv,"pass_on")) {
88 addattr_l(n,4096,TCA_TCINDEX_FALL_THROUGH,&value,
91 else if (!strcmp(*argv,"classid")) {
95 if (get_tc_classid(&handle,*argv)) {
96 fprintf(stderr, "Illegal \"classid\"\n");
99 addattr_l(n, 4096, TCA_TCINDEX_CLASSID, &handle, 4);
101 else if (!strcmp(*argv,"police")) {
103 if (parse_police(&argc, &argv, TCA_TCINDEX_POLICE, n)) {
104 fprintf(stderr, "Illegal \"police\"\n");
116 tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;
121 static int tcindex_print_opt(struct filter_util *qu, FILE *f,
122 struct rtattr *opt, __u32 handle)
124 struct rtattr *tb[TCA_TCINDEX_MAX+1];
129 parse_rtattr_nested(tb, TCA_TCINDEX_MAX, opt);
131 if (handle != ~0) fprintf(f,"handle 0x%04x ",handle);
132 if (tb[TCA_TCINDEX_HASH]) {
135 if (RTA_PAYLOAD(tb[TCA_TCINDEX_HASH]) < sizeof(hash))
137 hash = *(__u16 *) RTA_DATA(tb[TCA_TCINDEX_HASH]);
138 fprintf(f,"hash %d ",hash);
140 if (tb[TCA_TCINDEX_MASK]) {
143 if (RTA_PAYLOAD(tb[TCA_TCINDEX_MASK]) < sizeof(mask))
145 mask = *(__u16 *) RTA_DATA(tb[TCA_TCINDEX_MASK]);
146 fprintf(f,"mask 0x%04x ",mask);
148 if (tb[TCA_TCINDEX_SHIFT]) {
151 if (RTA_PAYLOAD(tb[TCA_TCINDEX_SHIFT]) < sizeof(shift))
153 shift = *(int *) RTA_DATA(tb[TCA_TCINDEX_SHIFT]);
154 fprintf(f,"shift %d ",shift);
156 if (tb[TCA_TCINDEX_FALL_THROUGH]) {
159 if (RTA_PAYLOAD(tb[TCA_TCINDEX_FALL_THROUGH]) <
160 sizeof(fall_through))
162 fall_through = *(int *) RTA_DATA(tb[TCA_TCINDEX_FALL_THROUGH]);
163 fprintf(f,fall_through ? "fall_through " : "pass_on ");
165 if (tb[TCA_TCINDEX_CLASSID]) {
167 fprintf(f, "classid %s ",sprint_tc_classid(*(__u32 *)
168 RTA_DATA(tb[TCA_TCINDEX_CLASSID]), b1));
170 if (tb[TCA_TCINDEX_POLICE]) {
172 tc_print_police(f, tb[TCA_TCINDEX_POLICE]);
177 struct filter_util tcindex_filter_util = {
179 .parse_fopt = tcindex_parse_opt,
180 .print_fopt = tcindex_print_opt,