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141b55f8 ND |
1 | /* |
2 | * q_skbprio.c SKB PRIORITY QUEUE. | |
3 | * | |
4 | * This program is free software; you can redistribute 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: Nishanth Devarajan, <ndev2021@gmail.com> | |
10 | * | |
11 | */ | |
12 | ||
13 | #include <stdio.h> | |
14 | #include <stdlib.h> | |
15 | #include <unistd.h> | |
16 | #include <syslog.h> | |
17 | #include <fcntl.h> | |
18 | #include <sys/socket.h> | |
19 | #include <netinet/in.h> | |
20 | #include <arpa/inet.h> | |
21 | #include <string.h> | |
22 | ||
23 | #include "utils.h" | |
24 | #include "tc_util.h" | |
25 | ||
26 | static void explain(void) | |
27 | { | |
28 | fprintf(stderr, "Usage: ... <skbprio> [ limit NUMBER ]\n"); | |
29 | } | |
30 | ||
31 | static int skbprio_parse_opt(struct qdisc_util *qu, int argc, char **argv, | |
32 | struct nlmsghdr *n, const char *dev) | |
33 | { | |
34 | int ok = 0; | |
35 | struct tc_skbprio_qopt opt = {}; | |
36 | ||
37 | while (argc > 0) { | |
38 | if (strcmp(*argv, "limit") == 0) { | |
39 | NEXT_ARG(); | |
40 | if (get_size(&opt.limit, *argv)) { | |
41 | fprintf(stderr, | |
42 | "%s: Illegal \"limit\" value:\"%s\"\n", | |
43 | qu->id, *argv); | |
44 | return -1; | |
45 | } | |
46 | ok++; | |
47 | } | |
48 | else if (strcmp(*argv, "help") == 0) { | |
49 | explain(); | |
50 | return -1; | |
51 | } else { | |
52 | fprintf(stderr, | |
53 | "%s: unknown parameter \"%s\"\n", | |
54 | qu->id, *argv); | |
55 | explain(); | |
56 | return -1; | |
57 | } | |
58 | argc--; argv++; | |
59 | } | |
60 | ||
61 | if (ok) | |
62 | addattr_l(n, 1024, TCA_OPTIONS, &opt, sizeof(opt)); | |
63 | return 0; | |
64 | } | |
65 | ||
66 | static int skbprio_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt) | |
67 | { | |
68 | struct tc_skbprio_qopt *qopt; | |
69 | ||
70 | if (opt == NULL) | |
71 | return 0; | |
72 | ||
73 | if (RTA_PAYLOAD(opt) < sizeof(*qopt)) | |
74 | return -1; | |
75 | qopt = RTA_DATA(opt); | |
f8bebea9 SH |
76 | |
77 | print_uint(PRINT_ANY, "limit", "limit %u ", qopt->limit); | |
141b55f8 ND |
78 | return 0; |
79 | } | |
80 | ||
81 | struct qdisc_util skbprio_qdisc_util = { | |
82 | .id = "skbprio", | |
83 | .parse_qopt = skbprio_parse_opt, | |
84 | .print_qopt = skbprio_print_opt, | |
85 | }; |