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1 | /* |
2 | * q_qfq.c QFQ. | |
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: Stephen Hemminger <shemminger@vyatta.com> | |
10 | * Fabio Checconi <fabio@gandalf.sssup.it> | |
11 | * | |
12 | */ | |
13 | #include <syslog.h> | |
14 | #include <fcntl.h> | |
15 | #include <sys/socket.h> | |
16 | #include <netinet/in.h> | |
17 | #include <arpa/inet.h> | |
18 | #include <string.h> | |
19 | ||
20 | #include "utils.h" | |
21 | #include "tc_util.h" | |
22 | ||
23 | static void explain(void) | |
24 | { | |
25 | fprintf(stderr, "Usage: ... qfq\n"); | |
26 | } | |
27 | ||
28 | static void explain1(const char *arg) | |
29 | { | |
30 | fprintf(stderr, "Illegal \"%s\"\n", arg); | |
31 | } | |
32 | ||
33 | static void explain_class(void) | |
34 | { | |
35 | fprintf(stderr, "Usage: ... qfq weight NUMBER maxpkt BYTES\n"); | |
36 | } | |
37 | ||
38 | static int qfq_parse_opt(struct qdisc_util *qu, int argc, char **argv, | |
39 | struct nlmsghdr *n) | |
40 | { | |
41 | while (argc > 0) { | |
42 | if (matches(*argv, "help") == 0) { | |
43 | explain(); | |
44 | return -1; | |
45 | } else { | |
46 | fprintf(stderr, "What is \"%s\"?\n", *argv); | |
47 | explain(); | |
48 | return -1; | |
49 | } | |
50 | argc--; argv++; | |
51 | } | |
52 | ||
53 | return 0; | |
54 | } | |
55 | ||
56 | static int qfq_parse_class_opt(struct qdisc_util *qu, int argc, char **argv, | |
57 | struct nlmsghdr *n) | |
58 | { | |
59 | struct rtattr *tail; | |
60 | __u32 tmp; | |
61 | ||
62 | tail = NLMSG_TAIL(n); | |
63 | addattr_l(n, 4096, TCA_OPTIONS, NULL, 0); | |
64 | ||
65 | while (argc > 0) { | |
66 | if (matches(*argv, "weight") == 0) { | |
67 | NEXT_ARG(); | |
68 | if (get_u32(&tmp, *argv, 10)) { | |
69 | explain1("weight"); return -1; | |
70 | } | |
71 | addattr32(n, 4096, TCA_QFQ_WEIGHT, tmp); | |
72 | } else if (matches(*argv, "maxpkt") == 0) { | |
73 | NEXT_ARG(); | |
74 | if (get_u32(&tmp, *argv, 10)) { | |
75 | explain1("maxpkt"); return -1; | |
76 | } | |
77 | addattr32(n, 4096, TCA_QFQ_LMAX, tmp); | |
78 | } else if (strcmp(*argv, "help") == 0) { | |
79 | explain_class(); | |
80 | return -1; | |
81 | } else { | |
82 | fprintf(stderr, "What is \"%s\"?\n", *argv); | |
83 | explain_class(); | |
84 | return -1; | |
85 | } | |
86 | argc--; argv++; | |
87 | } | |
88 | ||
89 | tail->rta_len = (void *)NLMSG_TAIL(n) - (void *)tail; | |
90 | ||
91 | return 0; | |
92 | } | |
93 | ||
94 | static int qfq_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt) | |
95 | { | |
96 | struct rtattr *tb[TCA_QFQ_MAX + 1]; | |
97 | ||
98 | if (opt == NULL) | |
99 | return 0; | |
100 | ||
101 | parse_rtattr_nested(tb, TCA_QFQ_MAX, opt); | |
102 | ||
103 | if (tb[TCA_QFQ_WEIGHT]) { | |
104 | fprintf(f, "weight %u ", | |
105 | *(__u32 *)RTA_DATA(tb[TCA_QFQ_WEIGHT])); | |
106 | } | |
107 | ||
108 | if (tb[TCA_QFQ_LMAX]) { | |
109 | fprintf(f, "maxpkt %u ", | |
110 | *(__u32 *)RTA_DATA(tb[TCA_QFQ_LMAX])); | |
111 | } | |
112 | ||
113 | return 0; | |
114 | } | |
115 | ||
116 | struct qdisc_util qfq_qdisc_util = { | |
117 | .id = "qfq", | |
118 | .parse_qopt = qfq_parse_opt, | |
119 | .print_qopt = qfq_print_opt, | |
120 | .parse_copt = qfq_parse_class_opt, | |
121 | .print_copt = qfq_print_opt, | |
122 | }; |