| /* |
| * q_drr.c DRR. |
| * |
| * This program is free software; you can redistribute 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: Patrick McHardy <kaber@trash.net> |
| * |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <syslog.h> |
| #include <fcntl.h> |
| #include <sys/socket.h> |
| #include <netinet/in.h> |
| #include <arpa/inet.h> |
| #include <string.h> |
| |
| #include "utils.h" |
| #include "tc_util.h" |
| |
| static void explain(void) |
| { |
| fprintf(stderr, "Usage: ... drr\n"); |
| } |
| |
| static void explain2(void) |
| { |
| fprintf(stderr, "Usage: ... drr quantum SIZE\n"); |
| } |
| |
| |
| static int drr_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n) |
| { |
| while (argc) { |
| if (strcmp(*argv, "help") == 0) { |
| explain(); |
| return -1; |
| } else { |
| fprintf(stderr, "What is \"%s\"?\n", *argv); |
| explain(); |
| return -1; |
| } |
| } |
| return 0; |
| } |
| |
| static int drr_parse_class_opt(struct qdisc_util *qu, int argc, char **argv, |
| struct nlmsghdr *n) |
| { |
| struct rtattr *tail; |
| __u32 tmp; |
| |
| tail = NLMSG_TAIL(n); |
| addattr_l(n, 1024, TCA_OPTIONS, NULL, 0); |
| |
| while (argc > 0) { |
| if (strcmp(*argv, "quantum") == 0) { |
| NEXT_ARG(); |
| if (get_size(&tmp, *argv)) { |
| fprintf(stderr, "Illegal \"quantum\"\n"); |
| return -1; |
| } |
| addattr_l(n, 1024, TCA_DRR_QUANTUM, &tmp, sizeof(tmp)); |
| } else if (strcmp(*argv, "help") == 0) { |
| explain2(); |
| return -1; |
| } else { |
| fprintf(stderr, "What is \"%s\"?\n", *argv); |
| explain2(); |
| return -1; |
| } |
| argc--; argv++; |
| } |
| |
| tail->rta_len = (void *) NLMSG_TAIL(n) - (void *)tail; |
| return 0; |
| } |
| |
| static int drr_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt) |
| { |
| struct rtattr *tb[TCA_DRR_MAX + 1]; |
| SPRINT_BUF(b1); |
| |
| if (opt == NULL) |
| return 0; |
| |
| parse_rtattr_nested(tb, TCA_DRR_MAX, opt); |
| |
| if (tb[TCA_DRR_QUANTUM]) |
| fprintf(f, "quantum %s ", |
| sprint_size(rta_getattr_u32(tb[TCA_DRR_QUANTUM]), b1)); |
| return 0; |
| } |
| |
| static int drr_print_xstats(struct qdisc_util *qu, FILE *f, struct rtattr *xstats) |
| { |
| struct tc_drr_stats *x; |
| SPRINT_BUF(b1); |
| |
| if (xstats == NULL) |
| return 0; |
| if (RTA_PAYLOAD(xstats) < sizeof(*x)) |
| return -1; |
| x = RTA_DATA(xstats); |
| |
| fprintf(f, " deficit %s ", sprint_size(x->deficit, b1)); |
| return 0; |
| } |
| |
| struct qdisc_util drr_qdisc_util = { |
| .id = "drr", |
| .parse_qopt = drr_parse_opt, |
| .print_qopt = drr_print_opt, |
| .print_xstats = drr_print_xstats, |
| .parse_copt = drr_parse_class_opt, |
| .print_copt = drr_print_opt, |
| }; |