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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#include <linux/if.h>
22
23#include "utils.h"
24#include "tc_util.h"
25
26static void explain(void)
27{
28 fprintf(stderr,
29 "Usage: ... matchall [skip_sw | skip_hw]\n"
30 " [ action ACTION_SPEC ] [ classid CLASSID ]\n"
31 "\n"
32 "Where: SELECTOR := SAMPLE SAMPLE ...\n"
33 " FILTERID := X:Y:Z\n"
34 " ACTION_SPEC := ... look at individual actions\n"
35 "\n"
36 "NOTE: CLASSID is parsed as hexadecimal input.\n");
37}
38
39static int matchall_parse_opt(struct filter_util *qu, char *handle,
40 int argc, char **argv, struct nlmsghdr *n)
41{
42 struct tcmsg *t = NLMSG_DATA(n);
43 struct rtattr *tail;
44 __u32 flags = 0;
45 long h = 0;
46
47 if (handle) {
48 h = strtol(handle, NULL, 0);
49 if (h == LONG_MIN || h == LONG_MAX) {
50 fprintf(stderr, "Illegal handle \"%s\", must be numeric.\n",
51 handle);
52 return -1;
53 }
54 }
55 t->tcm_handle = h;
56
57 if (argc == 0)
58 return 0;
59
60 tail = (struct rtattr *)(((void *)n)+NLMSG_ALIGN(n->nlmsg_len));
61 addattr_l(n, MAX_MSG, TCA_OPTIONS, NULL, 0);
62
63 while (argc > 0) {
64 if (matches(*argv, "classid") == 0 ||
65 strcmp(*argv, "flowid") == 0) {
66 unsigned int handle;
67
68 NEXT_ARG();
69 if (get_tc_classid(&handle, *argv)) {
70 fprintf(stderr, "Illegal \"classid\"\n");
71 return -1;
72 }
73 addattr_l(n, MAX_MSG, TCA_MATCHALL_CLASSID, &handle, 4);
74 } else if (matches(*argv, "action") == 0) {
75 NEXT_ARG();
76 if (parse_action(&argc, &argv, TCA_MATCHALL_ACT, n)) {
77 fprintf(stderr, "Illegal \"action\"\n");
78 return -1;
79 }
80 continue;
81
82 } else if (strcmp(*argv, "skip_hw") == 0) {
83 NEXT_ARG();
84 flags |= TCA_CLS_FLAGS_SKIP_HW;
85 continue;
86 } else if (strcmp(*argv, "skip_sw") == 0) {
87 NEXT_ARG();
88 flags |= TCA_CLS_FLAGS_SKIP_SW;
89 continue;
90 } else if (strcmp(*argv, "help") == 0) {
91 explain();
92 return -1;
93 } else {
94 fprintf(stderr, "What is \"%s\"?\n", *argv);
95 explain();
96 return -1;
97 }
98 argc--; argv++;
99 }
100
101 if (flags) {
102 if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW |
103 TCA_CLS_FLAGS_SKIP_SW))) {
104 fprintf(stderr,
105 "skip_hw and skip_sw are mutually exclusive\n");
106 return -1;
107 }
108 addattr_l(n, MAX_MSG, TCA_MATCHALL_FLAGS, &flags, 4);
109 }
110
111 tail->rta_len = (((void *)n)+n->nlmsg_len) - (void *)tail;
112 return 0;
113}
114
115static int matchall_print_opt(struct filter_util *qu, FILE *f,
116 struct rtattr *opt, __u32 handle)
117{
118 struct rtattr *tb[TCA_MATCHALL_MAX+1];
119 struct tc_matchall_pcnt *pf = NULL;
120
121 if (opt == NULL)
122 return 0;
123
124 parse_rtattr_nested(tb, TCA_MATCHALL_MAX, opt);
125
126 if (handle)
127 print_uint(PRINT_ANY, "handle", "handle 0x%x ", handle);
128
129 if (tb[TCA_MATCHALL_CLASSID]) {
130 SPRINT_BUF(b1);
131 print_string(PRINT_ANY, "flowid", "flowid %s ",
132 sprint_tc_classid(rta_getattr_u32(tb[TCA_MATCHALL_CLASSID]), b1));
133 }
134
135 if (tb[TCA_MATCHALL_FLAGS]) {
136 __u32 flags = rta_getattr_u32(tb[TCA_MATCHALL_FLAGS]);
137
138 if (flags & TCA_CLS_FLAGS_SKIP_HW)
139 print_bool(PRINT_ANY, "skip_hw", "\n skip_hw", true);
140 if (flags & TCA_CLS_FLAGS_SKIP_SW)
141 print_bool(PRINT_ANY, "skip_sw", "\n skip_sw", true);
142
143 if (flags & TCA_CLS_FLAGS_IN_HW)
144 print_bool(PRINT_ANY, "in_hw", "\n in_hw", true);
145 else if (flags & TCA_CLS_FLAGS_NOT_IN_HW)
146 print_bool(PRINT_ANY, "not_in_hw", "\n not_in_hw", true);
147 }
148
149 if (tb[TCA_MATCHALL_PCNT]) {
150 if (RTA_PAYLOAD(tb[TCA_MATCHALL_PCNT]) < sizeof(*pf)) {
151 print_string(PRINT_FP, NULL, "Broken perf counters\n", NULL);
152 return -1;
153 }
154 pf = RTA_DATA(tb[TCA_MATCHALL_PCNT]);
155 }
156
157 if (show_stats && NULL != pf)
158 print_u64(PRINT_ANY, "rule_hit", " (rule hit %llu)",
159 (unsigned long long) pf->rhit);
160
161
162 if (tb[TCA_MATCHALL_ACT])
163 tc_print_action(f, tb[TCA_MATCHALL_ACT], 0);
164
165 return 0;
166}
167
168struct filter_util matchall_filter_util = {
169 .id = "matchall",
170 .parse_fopt = matchall_parse_opt,
171 .print_fopt = matchall_print_opt,
172};
173
