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d5cbf3ff YG |
1 | /* |
2 | * f_matchall.c Match-all Classifier | |
3 | * | |
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. | |
8 | * | |
9 | * Authors: Jiri Pirko <jiri@mellanox.com>, Yotam Gigi <yotamg@mellanox.com> | |
10 | * | |
11 | */ | |
12 | ||
13 | #include <stdio.h> | |
14 | #include <stdlib.h> | |
15 | #include <unistd.h> | |
d5cbf3ff YG |
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 | ||
26 | static void explain(void) | |
27 | { | |
28 | fprintf(stderr, "Usage: ... matchall [skip_sw | skip_hw]\n"); | |
29 | fprintf(stderr, " [ action ACTION_SPEC ] [ classid CLASSID ]\n"); | |
30 | fprintf(stderr, "\n"); | |
31 | fprintf(stderr, "Where: SELECTOR := SAMPLE SAMPLE ...\n"); | |
32 | fprintf(stderr, " FILTERID := X:Y:Z\n"); | |
33 | fprintf(stderr, " ACTION_SPEC := ... look at individual actions\n"); | |
34 | fprintf(stderr, "\nNOTE: CLASSID is parsed as hexadecimal input.\n"); | |
35 | } | |
36 | ||
37 | static int matchall_parse_opt(struct filter_util *qu, char *handle, | |
38 | int argc, char **argv, struct nlmsghdr *n) | |
39 | { | |
40 | struct tcmsg *t = NLMSG_DATA(n); | |
41 | struct rtattr *tail; | |
42 | __u32 flags = 0; | |
43 | long h = 0; | |
44 | ||
45 | if (handle) { | |
46 | h = strtol(handle, NULL, 0); | |
47 | if (h == LONG_MIN || h == LONG_MAX) { | |
48 | fprintf(stderr, "Illegal handle \"%s\", must be numeric.\n", | |
49 | handle); | |
50 | return -1; | |
51 | } | |
52 | } | |
53 | t->tcm_handle = h; | |
54 | ||
55 | if (argc == 0) | |
56 | return 0; | |
57 | ||
58 | tail = (struct rtattr *)(((void *)n)+NLMSG_ALIGN(n->nlmsg_len)); | |
59 | addattr_l(n, MAX_MSG, TCA_OPTIONS, NULL, 0); | |
60 | ||
61 | while (argc > 0) { | |
62 | if (matches(*argv, "classid") == 0 || | |
63 | strcmp(*argv, "flowid") == 0) { | |
64 | unsigned int handle; | |
65 | ||
66 | NEXT_ARG(); | |
67 | if (get_tc_classid(&handle, *argv)) { | |
68 | fprintf(stderr, "Illegal \"classid\"\n"); | |
69 | return -1; | |
70 | } | |
71 | addattr_l(n, MAX_MSG, TCA_MATCHALL_CLASSID, &handle, 4); | |
72 | } else if (matches(*argv, "action") == 0) { | |
73 | NEXT_ARG(); | |
74 | if (parse_action(&argc, &argv, TCA_MATCHALL_ACT, n)) { | |
75 | fprintf(stderr, "Illegal \"action\"\n"); | |
76 | return -1; | |
77 | } | |
78 | continue; | |
79 | ||
80 | } else if (strcmp(*argv, "skip_hw") == 0) { | |
81 | NEXT_ARG(); | |
82 | flags |= TCA_CLS_FLAGS_SKIP_HW; | |
83 | continue; | |
84 | } else if (strcmp(*argv, "skip_sw") == 0) { | |
85 | NEXT_ARG(); | |
86 | flags |= TCA_CLS_FLAGS_SKIP_SW; | |
87 | continue; | |
88 | } else if (strcmp(*argv, "help") == 0) { | |
89 | explain(); | |
90 | return -1; | |
91 | } else { | |
92 | fprintf(stderr, "What is \"%s\"?\n", *argv); | |
93 | explain(); | |
94 | return -1; | |
95 | } | |
96 | argc--; argv++; | |
97 | } | |
98 | ||
99 | if (flags) { | |
100 | if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW | | |
101 | TCA_CLS_FLAGS_SKIP_SW))) { | |
102 | fprintf(stderr, | |
103 | "skip_hw and skip_sw are mutually exclusive\n"); | |
104 | return -1; | |
105 | } | |
106 | addattr_l(n, MAX_MSG, TCA_MATCHALL_FLAGS, &flags, 4); | |
107 | } | |
108 | ||
109 | tail->rta_len = (((void *)n)+n->nlmsg_len) - (void *)tail; | |
110 | return 0; | |
111 | } | |
112 | ||
113 | static int matchall_print_opt(struct filter_util *qu, FILE *f, | |
114 | struct rtattr *opt, __u32 handle) | |
115 | { | |
116 | struct rtattr *tb[TCA_MATCHALL_MAX+1]; | |
117 | ||
118 | if (opt == NULL) | |
119 | return 0; | |
120 | ||
121 | parse_rtattr_nested(tb, TCA_MATCHALL_MAX, opt); | |
122 | ||
123 | if (handle) | |
124 | fprintf(f, "handle 0x%x ", handle); | |
125 | ||
126 | if (tb[TCA_MATCHALL_CLASSID]) { | |
127 | SPRINT_BUF(b1); | |
128 | fprintf(f, "flowid %s ", | |
129 | sprint_tc_classid(rta_getattr_u32(tb[TCA_MATCHALL_CLASSID]), b1)); | |
130 | } | |
131 | ||
afdc1fed OG |
132 | if (tb[TCA_MATCHALL_FLAGS]) { |
133 | __u32 flags = rta_getattr_u32(tb[TCA_MATCHALL_FLAGS]); | |
134 | ||
135 | if (flags & TCA_CLS_FLAGS_SKIP_HW) | |
136 | fprintf(f, "\n skip_hw"); | |
137 | if (flags & TCA_CLS_FLAGS_SKIP_SW) | |
138 | fprintf(f, "\n skip_sw"); | |
e57285b8 OG |
139 | |
140 | if (flags & TCA_CLS_FLAGS_IN_HW) | |
141 | fprintf(f, "\n in_hw"); | |
142 | else if (flags & TCA_CLS_FLAGS_NOT_IN_HW) | |
143 | fprintf(f, "\n not_in_hw"); | |
afdc1fed OG |
144 | } |
145 | ||
d5cbf3ff | 146 | if (tb[TCA_MATCHALL_ACT]) |
9e713525 | 147 | tc_print_action(f, tb[TCA_MATCHALL_ACT], 0); |
d5cbf3ff YG |
148 | |
149 | return 0; | |
150 | } | |
151 | ||
152 | struct filter_util matchall_filter_util = { | |
153 | .id = "matchall", | |
154 | .parse_fopt = matchall_parse_opt, | |
155 | .print_fopt = matchall_print_opt, | |
156 | }; |