| /* |
| * q_fifo.c FIFO. |
| * |
| * 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: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> |
| * |
| */ |
| |
| #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: ... <[p|b]fifo | pfifo_head_drop> [ limit NUMBER ]\n"); |
| } |
| |
| static int fifo_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n) |
| { |
| int ok = 0; |
| struct tc_fifo_qopt opt = {}; |
| |
| while (argc > 0) { |
| if (strcmp(*argv, "limit") == 0) { |
| NEXT_ARG(); |
| if (get_size(&opt.limit, *argv)) { |
| fprintf(stderr, "%s: Illegal value for \"limit\": \"%s\"\n", qu->id, *argv); |
| return -1; |
| } |
| ok++; |
| } else if (strcmp(*argv, "help") == 0) { |
| explain(); |
| return -1; |
| } else { |
| fprintf(stderr, "%s: unknown parameter \"%s\"\n", qu->id, *argv); |
| explain(); |
| return -1; |
| } |
| argc--; argv++; |
| } |
| |
| if (ok) |
| addattr_l(n, 1024, TCA_OPTIONS, &opt, sizeof(opt)); |
| return 0; |
| } |
| |
| static int fifo_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt) |
| { |
| struct tc_fifo_qopt *qopt; |
| |
| if (opt == NULL) |
| return 0; |
| |
| if (RTA_PAYLOAD(opt) < sizeof(*qopt)) |
| return -1; |
| qopt = RTA_DATA(opt); |
| if (strcmp(qu->id, "bfifo") == 0) { |
| SPRINT_BUF(b1); |
| fprintf(f, "limit %s", sprint_size(qopt->limit, b1)); |
| } else |
| fprintf(f, "limit %up", qopt->limit); |
| return 0; |
| } |
| |
| |
| struct qdisc_util bfifo_qdisc_util = { |
| .id = "bfifo", |
| .parse_qopt = fifo_parse_opt, |
| .print_qopt = fifo_print_opt, |
| }; |
| |
| struct qdisc_util pfifo_qdisc_util = { |
| .id = "pfifo", |
| .parse_qopt = fifo_parse_opt, |
| .print_qopt = fifo_print_opt, |
| }; |
| |
| struct qdisc_util pfifo_head_drop_qdisc_util = { |
| .id = "pfifo_head_drop", |
| .parse_qopt = fifo_parse_opt, |
| .print_qopt = fifo_print_opt, |
| }; |
| |
| extern int prio_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt); |
| struct qdisc_util pfifo_fast_qdisc_util = { |
| .id = "pfifo_fast", |
| .print_qopt = prio_print_opt, |
| }; |