2 * Copyright (C) 2013-2014 Michio Honda. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <inttypes.h> /* PRI* macros */
31 #include <string.h> /* strcmp */
32 #include <fcntl.h> /* open */
33 #include <unistd.h> /* close */
34 #include <sys/ioctl.h> /* ioctl */
35 #include <sys/param.h>
36 #include <sys/socket.h> /* apple needs sockaddr */
37 #include <net/if.h> /* ifreq */
38 #include <net/netmap.h>
39 #include <net/netmap_user.h>
40 #include <libgen.h> /* basename */
41 #include <stdlib.h> /* atoi, free */
44 #define ND(format, ...) do {} while(0)
45 #define D(format, ...) \
46 fprintf(stderr, "%s [%d] " format "\n", \
47 __FUNCTION__, __LINE__, ##__VA_ARGS__)
49 /* XXX cut and paste from pkt-gen.c because I'm not sure whether this
50 * program may include nm_util.h
52 void parse_nmr_config(const char* conf, struct nmreq *nmr)
57 nmr->nr_tx_rings = nmr->nr_rx_rings = 0;
58 nmr->nr_tx_slots = nmr->nr_rx_slots = 0;
59 if (conf == NULL || ! *conf)
62 for (i = 0, tok = strtok(w, ","); tok; i++, tok = strtok(NULL, ",")) {
66 nmr->nr_tx_slots = nmr->nr_rx_slots = v;
72 nmr->nr_tx_rings = nmr->nr_rx_rings = v;
78 D("ignored config: %s", tok);
82 D("txr %d txd %d rxr %d rxd %d",
83 nmr->nr_tx_rings, nmr->nr_tx_slots,
84 nmr->nr_rx_rings, nmr->nr_rx_slots);
89 bdg_ctl(const char *name, int nr_cmd, int nr_arg, char *nmr_config)
93 int fd = open("/dev/netmap", O_RDWR);
96 D("Unable to open /dev/netmap");
100 bzero(&nmr, sizeof(nmr));
101 nmr.nr_version = NETMAP_API;
102 if (name != NULL) /* might be NULL */
103 strncpy(nmr.nr_name, name, sizeof(nmr.nr_name));
105 parse_nmr_config(nmr_config, &nmr);
108 case NETMAP_BDG_DELIF:
109 case NETMAP_BDG_NEWIF:
110 error = ioctl(fd, NIOCREGIF, &nmr);
112 ND("Unable to %s %s", nr_cmd == NETMAP_BDG_DELIF ? "delete":"create", name);
115 ND("Success to %s %s", nr_cmd == NETMAP_BDG_DELIF ? "delete":"create", name);
118 case NETMAP_BDG_ATTACH:
119 case NETMAP_BDG_DETACH:
120 if (nr_arg && nr_arg != NETMAP_BDG_HOST)
122 nmr.nr_arg1 = nr_arg;
123 error = ioctl(fd, NIOCREGIF, &nmr);
125 ND("Unable to %s %s to the bridge", nr_cmd ==
126 NETMAP_BDG_DETACH?"detach":"attach", name);
129 ND("Success to %s %s to the bridge", nr_cmd ==
130 NETMAP_BDG_DETACH?"detach":"attach", name);
133 case NETMAP_BDG_LIST:
134 if (strlen(nmr.nr_name)) { /* name to bridge/port info */
135 error = ioctl(fd, NIOCGINFO, &nmr);
137 ND("Unable to obtain info for %s", name);
140 D("%s at bridge:%d port:%d", name, nmr.nr_arg1,
145 /* scan all the bridges and ports */
146 nmr.nr_arg1 = nmr.nr_arg2 = 0;
147 for (; !ioctl(fd, NIOCGINFO, &nmr); nmr.nr_arg2++) {
148 D("bridge:%d port:%d %s", nmr.nr_arg1, nmr.nr_arg2,
150 nmr.nr_name[0] = '\0';
156 nmr.nr_cmd = nmr.nr_arg1 = nmr.nr_arg2 = 0;
157 error = ioctl(fd, NIOCGINFO, &nmr);
159 ND("Unable to get if info for %s", name);
162 D("%s: %d queues.", name, nmr.nr_rx_rings);
170 main(int argc, char *argv[])
172 int ch, nr_cmd = 0, nr_arg = 0;
173 const char *command = basename(argv[0]);
174 char *name = NULL, *nmr_config = NULL;
181 "\t-g interface interface name to get info\n"
182 "\t-d interface interface name to be detached\n"
183 "\t-a interface interface name to be attached\n"
184 "\t-h interface interface name to be attached with the host stack\n"
185 "\t-n interface interface name to be created\n"
186 "\t-r interface interface name to be deleted\n"
187 "\t-l list all or specified bridge's interfaces (default)\n"
188 "\t-C string ring/slot setting of an interface creating by -n\n"
193 while ((ch = getopt(argc, argv, "d:a:h:g:l:n:r:C:")) != -1) {
194 name = optarg; /* default */
197 fprintf(stderr, "bad option %c %s", ch, optarg);
200 nr_cmd = NETMAP_BDG_DETACH;
203 nr_cmd = NETMAP_BDG_ATTACH;
206 nr_cmd = NETMAP_BDG_ATTACH;
207 nr_arg = NETMAP_BDG_HOST;
210 nr_cmd = NETMAP_BDG_NEWIF;
213 nr_cmd = NETMAP_BDG_DELIF;
219 nr_cmd = NETMAP_BDG_LIST;
220 if (optind < argc && argv[optind][0] == '-')
224 nmr_config = strdup(optarg);
227 if (optind != argc) {
228 // fprintf(stderr, "optind %d argc %d\n", optind, argc);
233 nr_cmd = NETMAP_BDG_LIST;
234 return bdg_ctl(name, nr_cmd, nr_arg, nmr_config) ? 1 : 0;