Patrick McHardy | c86f349 | 2008-11-19 16:08:05 +0100 | [diff] [blame] | 1 | /* |
| 2 | * q_drr.c DRR. |
| 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: Patrick McHardy <kaber@trash.net> |
| 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: ... drr\n"); |
| 29 | } |
| 30 | |
| 31 | static void explain2(void) |
| 32 | { |
| 33 | fprintf(stderr, "Usage: ... drr quantum SIZE\n"); |
| 34 | } |
| 35 | |
Patrick McHardy | c86f349 | 2008-11-19 16:08:05 +0100 | [diff] [blame] | 36 | |
| 37 | static int drr_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n) |
| 38 | { |
Petr Sabata | 5582c0c | 2011-06-10 03:19:07 +0000 | [diff] [blame] | 39 | while (argc) { |
Patrick McHardy | c86f349 | 2008-11-19 16:08:05 +0100 | [diff] [blame] | 40 | if (strcmp(*argv, "help") == 0) { |
| 41 | explain(); |
| 42 | return -1; |
| 43 | } else { |
| 44 | fprintf(stderr, "What is \"%s\"?\n", *argv); |
| 45 | explain(); |
| 46 | return -1; |
| 47 | } |
Patrick McHardy | c86f349 | 2008-11-19 16:08:05 +0100 | [diff] [blame] | 48 | } |
| 49 | return 0; |
| 50 | } |
| 51 | |
| 52 | static int drr_parse_class_opt(struct qdisc_util *qu, int argc, char **argv, |
| 53 | struct nlmsghdr *n) |
| 54 | { |
| 55 | struct rtattr *tail; |
| 56 | __u32 tmp; |
| 57 | |
| 58 | tail = NLMSG_TAIL(n); |
| 59 | addattr_l(n, 1024, TCA_OPTIONS, NULL, 0); |
| 60 | |
| 61 | while (argc > 0) { |
| 62 | if (strcmp(*argv, "quantum") == 0) { |
| 63 | NEXT_ARG(); |
| 64 | if (get_size(&tmp, *argv)) { |
| 65 | fprintf(stderr, "Illegal \"quantum\"\n"); |
| 66 | return -1; |
| 67 | } |
| 68 | addattr_l(n, 1024, TCA_DRR_QUANTUM, &tmp, sizeof(tmp)); |
| 69 | } else if (strcmp(*argv, "help") == 0) { |
| 70 | explain2(); |
| 71 | return -1; |
| 72 | } else { |
| 73 | fprintf(stderr, "What is \"%s\"?\n", *argv); |
| 74 | explain2(); |
| 75 | return -1; |
| 76 | } |
| 77 | argc--; argv++; |
| 78 | } |
| 79 | |
| 80 | tail->rta_len = (void *) NLMSG_TAIL(n) - (void *)tail; |
| 81 | return 0; |
| 82 | } |
| 83 | |
| 84 | static int drr_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt) |
| 85 | { |
| 86 | struct rtattr *tb[TCA_DRR_MAX + 1]; |
| 87 | SPRINT_BUF(b1); |
| 88 | |
| 89 | if (opt == NULL) |
| 90 | return 0; |
| 91 | |
| 92 | parse_rtattr_nested(tb, TCA_DRR_MAX, opt); |
| 93 | |
| 94 | if (tb[TCA_DRR_QUANTUM]) |
| 95 | fprintf(f, "quantum %s ", |
Stephen Hemminger | ff24746 | 2012-04-10 08:47:55 -0700 | [diff] [blame] | 96 | sprint_size(rta_getattr_u32(tb[TCA_DRR_QUANTUM]), b1)); |
Patrick McHardy | c86f349 | 2008-11-19 16:08:05 +0100 | [diff] [blame] | 97 | return 0; |
| 98 | } |
| 99 | |
| 100 | static int drr_print_xstats(struct qdisc_util *qu, FILE *f, struct rtattr *xstats) |
| 101 | { |
| 102 | struct tc_drr_stats *x; |
| 103 | SPRINT_BUF(b1); |
| 104 | |
| 105 | if (xstats == NULL) |
| 106 | return 0; |
| 107 | if (RTA_PAYLOAD(xstats) < sizeof(*x)) |
| 108 | return -1; |
| 109 | x = RTA_DATA(xstats); |
| 110 | |
| 111 | fprintf(f, " deficit %s ", sprint_size(x->deficit, b1)); |
| 112 | return 0; |
| 113 | } |
| 114 | |
| 115 | struct qdisc_util drr_qdisc_util = { |
| 116 | .id = "drr", |
| 117 | .parse_qopt = drr_parse_opt, |
| 118 | .print_qopt = drr_print_opt, |
| 119 | .print_xstats = drr_print_xstats, |
| 120 | .parse_copt = drr_parse_class_opt, |
| 121 | .print_copt = drr_print_opt, |
| 122 | }; |