]> rtime.felk.cvut.cz Git - lisovros/iproute2_canprio.git/blob - tc/q_fifo.c
Add reference to tc-codel(8) to the SEE ALSO section
[lisovros/iproute2_canprio.git] / tc / q_fifo.c
1 /*
2  * q_fifo.c             FIFO.
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:     Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
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: ... <[p|b]fifo | pfifo_head_drop> [ limit NUMBER ]\n");
29 }
30
31 static int fifo_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n)
32 {
33         int ok=0;
34         struct tc_fifo_qopt opt;
35         memset(&opt, 0, sizeof(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, "Illegal \"limit\"\n");
42                                 return -1;
43                         }
44                         ok++;
45                 } else if (strcmp(*argv, "help") == 0) {
46                         explain();
47                         return -1;
48                 } else {
49                         fprintf(stderr, "What is \"%s\"?\n", *argv);
50                         explain();
51                         return -1;
52                 }
53                 argc--; argv++;
54         }
55
56         if (ok)
57                 addattr_l(n, 1024, TCA_OPTIONS, &opt, sizeof(opt));
58         return 0;
59 }
60
61 static int fifo_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
62 {
63         struct tc_fifo_qopt *qopt;
64
65         if (opt == NULL)
66                 return 0;
67
68         if (RTA_PAYLOAD(opt)  < sizeof(*qopt))
69                 return -1;
70         qopt = RTA_DATA(opt);
71         if (strcmp(qu->id, "bfifo") == 0) {
72                 SPRINT_BUF(b1);
73                 fprintf(f, "limit %s", sprint_size(qopt->limit, b1));
74         } else
75                 fprintf(f, "limit %up", qopt->limit);
76         return 0;
77 }
78
79
80 struct qdisc_util bfifo_qdisc_util = {
81         .id = "bfifo",
82         .parse_qopt = fifo_parse_opt,
83         .print_qopt = fifo_print_opt,
84 };
85
86 struct qdisc_util pfifo_qdisc_util = {
87         .id = "pfifo",
88         .parse_qopt = fifo_parse_opt,
89         .print_qopt = fifo_print_opt,
90 };
91
92 struct qdisc_util pfifo_head_drop_qdisc_util = {
93         .id = "pfifo_head_drop",
94         .parse_qopt = fifo_parse_opt,
95         .print_qopt = fifo_print_opt,
96 };
97
98 extern int prio_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt);
99 struct qdisc_util pfifo_fast_qdisc_util = {
100         .id = "pfifo_fast",
101         .print_qopt = prio_print_opt,
102 };