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 23static void explain(void) 24{ 25 fprintf(stderr, "Usage: ... qfq\n"); 26} 27 28static void explain1(const char *arg) 29{ 30 fprintf(stderr, "Illegal \"%s\"\n", arg); 31} 32 33static void explain_class(void) 34{ 35 fprintf(stderr, "Usage: ... qfq weight NUMBER maxpkt BYTES\n"); 36} 37 38static int qfq_parse_opt(struct qdisc_util *qu, int argc, char **argv, 39 struct nlmsghdr *n) 40{ 41 if (argc > 0) { 42 if (matches(*argv, "help") != 0) 43 fprintf(stderr, "What is \"%s\"?\n", *argv); 44 explain(); 45 return -1; 46 } 47 48 return 0; 49} 50 51static int qfq_parse_class_opt(struct qdisc_util *qu, int argc, char **argv, 52 struct nlmsghdr *n) 53{ 54 struct rtattr *tail; 55 __u32 tmp; 56 57 tail = NLMSG_TAIL(n); 58 addattr_l(n, 4096, TCA_OPTIONS, NULL, 0); 59 60 while (argc > 0) { 61 if (matches(*argv, "weight") == 0) { 62 NEXT_ARG(); 63 if (get_u32(&tmp, *argv, 10)) { 64 explain1("weight"); return -1; 65 } 66 addattr32(n, 4096, TCA_QFQ_WEIGHT, tmp); 67 } else if (matches(*argv, "maxpkt") == 0) { 68 NEXT_ARG(); 69 if (get_u32(&tmp, *argv, 10)) { 70 explain1("maxpkt"); return -1; 71 } 72 addattr32(n, 4096, TCA_QFQ_LMAX, tmp); 73 } else if (strcmp(*argv, "help") == 0) { 74 explain_class(); 75 return -1; 76 } else { 77 fprintf(stderr, "What is \"%s\"?\n", *argv); 78 explain_class(); 79 return -1; 80 } 81 argc--; argv++; 82 } 83 84 tail->rta_len = (void *)NLMSG_TAIL(n) - (void *)tail; 85 86 return 0; 87} 88 89static int qfq_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt) 90{ 91 struct rtattr *tb[TCA_QFQ_MAX + 1]; 92 93 if (opt == NULL) 94 return 0; 95 96 parse_rtattr_nested(tb, TCA_QFQ_MAX, opt); 97 98 if (tb[TCA_QFQ_WEIGHT]) { 99 fprintf(f, "weight %u ", 100 rta_getattr_u32(tb[TCA_QFQ_WEIGHT])); 101 } 102 103 if (tb[TCA_QFQ_LMAX]) { 104 fprintf(f, "maxpkt %u ", 105 rta_getattr_u32(tb[TCA_QFQ_LMAX])); 106 } 107 108 return 0; 109} 110 111struct qdisc_util qfq_qdisc_util = { 112 .id = "qfq", 113 .parse_qopt = qfq_parse_opt, 114 .print_qopt = qfq_print_opt, 115 .parse_copt = qfq_parse_class_opt, 116 .print_copt = qfq_print_opt, 117}; 118