1/* 2 * q_sfq.c SFQ. 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 26static void explain(void) 27{ 28 fprintf(stderr, "Usage: ... sfq [ perturb SECS ] [ quantum BYTES ]\n"); 29} 30 31#define usage() return(-1) 32 33static int sfq_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n) 34{ 35 int ok=0; 36 struct tc_sfq_qopt opt; 37 38 memset(&opt, 0, sizeof(opt)); 39 40 while (argc > 0) { 41 if (strcmp(*argv, "quantum") == 0) { 42 NEXT_ARG(); 43 if (get_size(&opt.quantum, *argv)) { 44 fprintf(stderr, "Illegal \"limit\"\n"); 45 return -1; 46 } 47 ok++; 48 } else if (strcmp(*argv, "perturb") == 0) { 49 NEXT_ARG(); 50 if (get_integer(&opt.perturb_period, *argv, 0)) { 51 fprintf(stderr, "Illegal \"perturb\"\n"); 52 return -1; 53 } 54 ok++; 55 } else if (strcmp(*argv, "help") == 0) { 56 explain(); 57 return -1; 58 } else { 59 fprintf(stderr, "What is \"%s\"?\n", *argv); 60 explain(); 61 return -1; 62 } 63 argc--; argv++; 64 } 65 66 if (ok) 67 addattr_l(n, 1024, TCA_OPTIONS, &opt, sizeof(opt)); 68 return 0; 69} 70 71static int sfq_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt) 72{ 73 struct tc_sfq_qopt *qopt; 74 SPRINT_BUF(b1); 75 76 if (opt == NULL) 77 return 0; 78 79 if (RTA_PAYLOAD(opt) < sizeof(*qopt)) 80 return -1; 81 qopt = RTA_DATA(opt); 82 fprintf(f, "quantum %s ", sprint_size(qopt->quantum, b1)); 83 if (show_details) { 84 fprintf(f, "limit %up flows %u/%u ", 85 qopt->limit, qopt->flows, qopt->divisor); 86 } 87 if (qopt->perturb_period) 88 fprintf(f, "perturb %dsec ", qopt->perturb_period); 89 return 0; 90} 91 92static int sfq_print_xstats(struct qdisc_util *qu, FILE *f, struct rtattr *xstats) 93{ 94 return 0; 95} 96 97 98struct qdisc_util sfq_util = { 99 NULL, 100 "sfq", 101 sfq_parse_opt, 102 sfq_print_opt, 103 sfq_print_xstats, 104}; 105