1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
/*
* f_matchall.c Match-all Classifier
*
* This program is free software; you can distribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Authors: Jiri Pirko <jiri@mellanox.com>, Yotam Gigi <yotamg@mellanox.com>
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <string.h>
#include <linux/if.h>
#include "utils.h"
#include "tc_util.h"
static void explain(void)
{
fprintf(stderr,
"Usage: ... matchall [skip_sw | skip_hw]\n"
" [ action ACTION_SPEC ] [ classid CLASSID ]\n"
"\n"
"Where: SELECTOR := SAMPLE SAMPLE ...\n"
" FILTERID := X:Y:Z\n"
" ACTION_SPEC := ... look at individual actions\n"
"\n"
"NOTE: CLASSID is parsed as hexadecimal input.\n");
}
static int matchall_parse_opt(struct filter_util *qu, char *handle,
int argc, char **argv, struct nlmsghdr *n)
{
struct tcmsg *t = NLMSG_DATA(n);
struct rtattr *tail;
__u32 flags = 0;
long h = 0;
if (handle) {
h = strtol(handle, NULL, 0);
if (h == LONG_MIN || h == LONG_MAX) {
fprintf(stderr, "Illegal handle \"%s\", must be numeric.\n",
handle);
return -1;
}
}
t->tcm_handle = h;
if (argc == 0)
return 0;
tail = (struct rtattr *)(((void *)n)+NLMSG_ALIGN(n->nlmsg_len));
addattr_l(n, MAX_MSG, TCA_OPTIONS, NULL, 0);
while (argc > 0) {
if (matches(*argv, "classid") == 0 ||
strcmp(*argv, "flowid") == 0) {
unsigned int classid;
NEXT_ARG();
if (get_tc_classid(&classid, *argv)) {
fprintf(stderr, "Illegal \"classid\"\n");
return -1;
}
addattr_l(n, MAX_MSG, TCA_MATCHALL_CLASSID, &classid, 4);
} else if (matches(*argv, "action") == 0) {
NEXT_ARG();
if (parse_action(&argc, &argv, TCA_MATCHALL_ACT, n)) {
fprintf(stderr, "Illegal \"action\"\n");
return -1;
}
continue;
} else if (strcmp(*argv, "skip_hw") == 0) {
NEXT_ARG();
flags |= TCA_CLS_FLAGS_SKIP_HW;
continue;
} else if (strcmp(*argv, "skip_sw") == 0) {
NEXT_ARG();
flags |= TCA_CLS_FLAGS_SKIP_SW;
continue;
} else if (strcmp(*argv, "help") == 0) {
explain();
return -1;
} else {
fprintf(stderr, "What is \"%s\"?\n", *argv);
explain();
return -1;
}
argc--; argv++;
}
if (flags) {
if (!(flags ^ (TCA_CLS_FLAGS_SKIP_HW |
TCA_CLS_FLAGS_SKIP_SW))) {
fprintf(stderr,
"skip_hw and skip_sw are mutually exclusive\n");
return -1;
}
addattr_l(n, MAX_MSG, TCA_MATCHALL_FLAGS, &flags, 4);
}
tail->rta_len = (((void *)n)+n->nlmsg_len) - (void *)tail;
return 0;
}
static int matchall_print_opt(struct filter_util *qu, FILE *f,
struct rtattr *opt, __u32 handle)
{
struct rtattr *tb[TCA_MATCHALL_MAX+1];
struct tc_matchall_pcnt *pf = NULL;
if (opt == NULL)
return 0;
parse_rtattr_nested(tb, TCA_MATCHALL_MAX, opt);
if (handle)
print_uint(PRINT_ANY, "handle", "handle 0x%x ", handle);
if (tb[TCA_MATCHALL_CLASSID]) {
SPRINT_BUF(b1);
print_string(PRINT_ANY, "flowid", "flowid %s ",
sprint_tc_classid(rta_getattr_u32(tb[TCA_MATCHALL_CLASSID]), b1));
}
if (tb[TCA_MATCHALL_FLAGS]) {
__u32 flags = rta_getattr_u32(tb[TCA_MATCHALL_FLAGS]);
if (flags & TCA_CLS_FLAGS_SKIP_HW)
print_bool(PRINT_ANY, "skip_hw", "\n skip_hw", true);
if (flags & TCA_CLS_FLAGS_SKIP_SW)
print_bool(PRINT_ANY, "skip_sw", "\n skip_sw", true);
if (flags & TCA_CLS_FLAGS_IN_HW)
print_bool(PRINT_ANY, "in_hw", "\n in_hw", true);
else if (flags & TCA_CLS_FLAGS_NOT_IN_HW)
print_bool(PRINT_ANY, "not_in_hw", "\n not_in_hw", true);
}
if (tb[TCA_MATCHALL_PCNT]) {
if (RTA_PAYLOAD(tb[TCA_MATCHALL_PCNT]) < sizeof(*pf)) {
print_string(PRINT_FP, NULL, "Broken perf counters\n", NULL);
return -1;
}
pf = RTA_DATA(tb[TCA_MATCHALL_PCNT]);
}
if (show_stats && NULL != pf)
print_u64(PRINT_ANY, "rule_hit", " (rule hit %llu)",
(unsigned long long) pf->rhit);
if (tb[TCA_MATCHALL_ACT])
tc_print_action(f, tb[TCA_MATCHALL_ACT], 0);
return 0;
}
struct filter_util matchall_filter_util = {
.id = "matchall",
.parse_fopt = matchall_parse_opt,
.print_fopt = matchall_print_opt,
};
|
