Home | History | Annotate | Download | only in src 
      1 /*
      2  * src/nl-qdisc-add.c     Add Queueing Discipline
      3  *
      4  *	This library is free software; you can redistribute it and/or
      5  *	modify it under the terms of the GNU Lesser General Public
      6  *	License as published by the Free Software Foundation version 2.1
      7  *	of the License.
      8  *
      9  * Copyright (c) 2010 Thomas Graf <tgraf (at) suug.ch>
     10  */
     11 
     12 #include <netlink/cli/utils.h>
     13 #include <netlink/cli/tc.h>
     14 #include <netlink/cli/qdisc.h>
     15 #include <netlink/cli/link.h>
     16 
     17 #include <netlink-private/route/tc-api.h>
     18 
     19 static int quiet = 0;
     20 
     21 static void print_usage(void)
     22 {
     23 	printf(
     24 "Usage: nl-qdisc-add [OPTIONS]... QDISC [CONFIGURATION]...\n"
     25 "\n"
     26 "OPTIONS\n"
     27 " -q, --quiet               Do not print informal notifications.\n"
     28 " -h, --help                Show this help text.\n"
     29 " -v, --version             Show versioning information.\n"
     30 "     --update              Update qdisc if it exists.\n"
     31 "     --replace             Replace or update qdisc if it exists.\n"
     32 "     --update-only         Only update qdisc, never create it.\n"
     33 "     --replace-only        Only replace or update qdisc, never create it.\n"
     34 " -d, --dev=DEV             Network device the qdisc should be attached to.\n"
     35 " -i, --id=ID               ID of new qdisc (default: auto-generated)r\n"
     36 " -p, --parent=ID           ID of parent { root | ingress | QDISC-ID }\n"
     37 "\n"
     38 "CONFIGURATION\n"
     39 " -h, --help                Show help text of qdisc specific options.\n"
     40 "\n"
     41 "EXAMPLE\n"
     42 "   $ nl-qdisc-add --dev=eth1 --parent=root htb --rate=100mbit\n"
     43 "\n"
     44 	);
     45 	exit(0);
     46 }
     47 
     48 int main(int argc, char *argv[])
     49 {
     50 	struct nl_sock *sock;
     51 	struct rtnl_qdisc *qdisc;
     52 	struct rtnl_tc *tc;
     53 	struct nl_cache *link_cache;
     54 	struct nl_dump_params dp = {
     55 		.dp_type = NL_DUMP_DETAILS,
     56 		.dp_fd = stdout,
     57 	};
     58 	struct nl_cli_tc_module *tm;
     59 	struct rtnl_tc_ops *ops;
     60 	int err, flags = NLM_F_CREATE | NLM_F_EXCL;
     61 	char *kind, *id = NULL;
     62 
     63 	sock = nl_cli_alloc_socket();
     64 	nl_cli_connect(sock, NETLINK_ROUTE);
     65 
     66 	link_cache = nl_cli_link_alloc_cache(sock);
     67 
     68  	qdisc = nl_cli_qdisc_alloc();
     69 	tc = (struct rtnl_tc *) qdisc;
     70 
     71 	for (;;) {
     72 		int c, optidx = 0;
     73 		enum {
     74 			ARG_REPLACE = 257,
     75 			ARG_UPDATE = 258,
     76 			ARG_REPLACE_ONLY,
     77 			ARG_UPDATE_ONLY,
     78 		};
     79 		static struct option long_opts[] = {
     80 			{ "quiet", 0, 0, 'q' },
     81 			{ "help", 0, 0, 'h' },
     82 			{ "version", 0, 0, 'v' },
     83 			{ "dev", 1, 0, 'd' },
     84 			{ "parent", 1, 0, 'p' },
     85 			{ "id", 1, 0, 'i' },
     86 			{ "replace", 0, 0, ARG_REPLACE },
     87 			{ "update", 0, 0, ARG_UPDATE },
     88 			{ "replace-only", 0, 0, ARG_REPLACE_ONLY },
     89 			{ "update-only", 0, 0, ARG_UPDATE_ONLY },
     90 			{ 0, 0, 0, 0 }
     91 		};
     92 
     93 		c = getopt_long(argc, argv, "+qhvd:p:i:",
     94 				long_opts, &optidx);
     95 		if (c == -1)
     96 			break;
     97 
     98 		switch (c) {
     99 		case 'q': quiet = 1; break;
    100 		case 'h': print_usage(); break;
    101 		case 'v': nl_cli_print_version(); break;
    102 		case 'd': nl_cli_tc_parse_dev(tc, link_cache, optarg); break;
    103 		case 'p': nl_cli_tc_parse_parent(tc, optarg); break;
    104 		case 'i': id = strdup(optarg); break;
    105 		case ARG_UPDATE: flags = NLM_F_CREATE; break;
    106 		case ARG_REPLACE: flags = NLM_F_CREATE | NLM_F_REPLACE; break;
    107 		case ARG_UPDATE_ONLY: flags = 0; break;
    108 		case ARG_REPLACE_ONLY: flags = NLM_F_REPLACE; break;
    109 		}
    110  	}
    111 
    112 	if (optind >= argc)
    113 		print_usage();
    114 
    115 	if (!rtnl_tc_get_ifindex(tc))
    116 		nl_cli_fatal(EINVAL, "You must specify a network device (--dev=XXX)");
    117 
    118 	if (!rtnl_tc_get_parent(tc))
    119 		nl_cli_fatal(EINVAL, "You must specify a parent");
    120 
    121 	if (id) {
    122 		nl_cli_tc_parse_handle(tc, id, 1);
    123 		free(id);
    124 	}
    125 
    126 	kind = argv[optind++];
    127 	rtnl_tc_set_kind(tc, kind);
    128 
    129 	if (!(ops = rtnl_tc_get_ops(tc)))
    130 		nl_cli_fatal(ENOENT, "Unknown qdisc \"%s\"", kind);
    131 
    132 	if (!(tm = nl_cli_tc_lookup(ops)))
    133 		nl_cli_fatal(ENOTSUP, "Qdisc type \"%s\" not supported.", kind);
    134 
    135 	tm->tm_parse_argv(tc, argc, argv);
    136 
    137 	if (!quiet) {
    138 		printf("Adding ");
    139 		nl_object_dump(OBJ_CAST(qdisc), &dp);
    140  	}
    141 
    142 	if ((err = rtnl_qdisc_add(sock, qdisc, flags)) < 0)
    143 		nl_cli_fatal(EINVAL, "Unable to add qdisc: %s", nl_geterror(err));
    144 
    145 	return 0;
    146 }
    147