vale-ctl.c revision 251139
1251139Sluigi/* 2251139Sluigi * Copyright (C) 2013 Michio Honda. All rights reserved. 3251139Sluigi * 4251139Sluigi * Redistribution and use in source and binary forms, with or without 5251139Sluigi * modification, are permitted provided that the following conditions 6251139Sluigi * are met: 7251139Sluigi * 1. Redistributions of source code must retain the above copyright 8251139Sluigi * notice, this list of conditions and the following disclaimer. 9251139Sluigi * 2. Redistributions in binary form must reproduce the above copyright 10251139Sluigi * notice, this list of conditions and the following disclaimer in the 11251139Sluigi * documentation and/or other materials provided with the distribution. 12251139Sluigi * 13251139Sluigi * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14251139Sluigi * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15251139Sluigi * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16251139Sluigi * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17251139Sluigi * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18251139Sluigi * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19251139Sluigi * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20251139Sluigi * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21251139Sluigi * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22251139Sluigi * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23251139Sluigi * SUCH DAMAGE. 24251139Sluigi */ 25251139Sluigi 26251139Sluigi/* $FreeBSD: head/tools/tools/netmap/vale-ctl.c 251139 2013-05-30 14:07:14Z luigi $ */ 27251139Sluigi 28251139Sluigi#include <errno.h> 29251139Sluigi#include <stdio.h> 30251139Sluigi#include <inttypes.h> /* PRI* macros */ 31251139Sluigi#include <string.h> /* strcmp */ 32251139Sluigi#include <fcntl.h> /* open */ 33251139Sluigi#include <unistd.h> /* close */ 34251139Sluigi#include <sys/ioctl.h> /* ioctl */ 35251139Sluigi#include <sys/param.h> 36251139Sluigi#include <net/if.h> /* ifreq */ 37251139Sluigi#include <net/netmap.h> 38251139Sluigi#include <net/netmap_user.h> 39251139Sluigi#include <libgen.h> /* basename */ 40251139Sluigi 41251139Sluigi/* debug support */ 42251139Sluigi#define ND(format, ...) do {} while(0) 43251139Sluigi#define D(format, ...) \ 44251139Sluigi fprintf(stderr, "%s [%d] " format "\n", \ 45251139Sluigi __FUNCTION__, __LINE__, ##__VA_ARGS__) 46251139Sluigi 47251139Sluigistatic int 48251139Sluigibdg_ctl(const char *name, int nr_cmd, int nr_arg) 49251139Sluigi{ 50251139Sluigi struct nmreq nmr; 51251139Sluigi int error = 0; 52251139Sluigi int fd = open("/dev/netmap", O_RDWR); 53251139Sluigi 54251139Sluigi if (fd == -1) { 55251139Sluigi D("Unable to open /dev/netmap"); 56251139Sluigi return -1; 57251139Sluigi } 58251139Sluigi 59251139Sluigi bzero(&nmr, sizeof(nmr)); 60251139Sluigi nmr.nr_version = NETMAP_API; 61251139Sluigi if (name != NULL) /* might be NULL */ 62251139Sluigi strncpy(nmr.nr_name, name, sizeof(nmr.nr_name)); 63251139Sluigi nmr.nr_cmd = nr_cmd; 64251139Sluigi 65251139Sluigi switch (nr_cmd) { 66251139Sluigi case NETMAP_BDG_ATTACH: 67251139Sluigi case NETMAP_BDG_DETACH: 68251139Sluigi if (nr_arg && nr_arg != NETMAP_BDG_HOST) 69251139Sluigi nr_arg = 0; 70251139Sluigi nmr.nr_arg1 = nr_arg; 71251139Sluigi error = ioctl(fd, NIOCREGIF, &nmr); 72251139Sluigi if (error == -1) 73251139Sluigi D("Unable to %s %s to the bridge", nr_cmd == 74251139Sluigi NETMAP_BDG_DETACH?"detach":"attach", name); 75251139Sluigi else 76251139Sluigi D("Success to %s %s to the bridge\n", nr_cmd == 77251139Sluigi NETMAP_BDG_DETACH?"detach":"attach", name); 78251139Sluigi break; 79251139Sluigi 80251139Sluigi case NETMAP_BDG_LIST: 81251139Sluigi if (strlen(nmr.nr_name)) { /* name to bridge/port info */ 82251139Sluigi error = ioctl(fd, NIOCGINFO, &nmr); 83251139Sluigi if (error) 84251139Sluigi D("Unable to obtain info for %s", name); 85251139Sluigi else 86251139Sluigi D("%s at bridge:%d port:%d", name, nmr.nr_arg1, 87251139Sluigi nmr.nr_arg2); 88251139Sluigi break; 89251139Sluigi } 90251139Sluigi 91251139Sluigi /* scan all the bridges and ports */ 92251139Sluigi nmr.nr_arg1 = nmr.nr_arg2 = 0; 93251139Sluigi for (; !ioctl(fd, NIOCGINFO, &nmr); nmr.nr_arg2++) { 94251139Sluigi D("bridge:%d port:%d %s", nmr.nr_arg1, nmr.nr_arg2, 95251139Sluigi nmr.nr_name); 96251139Sluigi nmr.nr_name[0] = '\0'; 97251139Sluigi } 98251139Sluigi 99251139Sluigi break; 100251139Sluigi 101251139Sluigi default: /* GINFO */ 102251139Sluigi nmr.nr_cmd = nmr.nr_arg1 = nmr.nr_arg2 = 0; 103251139Sluigi error = ioctl(fd, NIOCGINFO, &nmr); 104251139Sluigi if (error) 105251139Sluigi D("Unable to get if info for %s", name); 106251139Sluigi else 107251139Sluigi D("%s: %d queues.", name, nmr.nr_rx_rings); 108251139Sluigi break; 109251139Sluigi } 110251139Sluigi close(fd); 111251139Sluigi return error; 112251139Sluigi} 113251139Sluigi 114251139Sluigiint 115251139Sluigimain(int argc, char *argv[]) 116251139Sluigi{ 117251139Sluigi int ch, nr_cmd = 0, nr_arg = 0; 118251139Sluigi const char *command = basename(argv[0]); 119251139Sluigi char *name = NULL; 120251139Sluigi 121251139Sluigi if (argc != 3 && argc != 1 /* list all */ ) { 122251139Sluigiusage: 123251139Sluigi fprintf(stderr, 124251139Sluigi "Usage:\n" 125251139Sluigi "%s arguments\n" 126251139Sluigi "\t-g interface interface name to get info\n" 127251139Sluigi "\t-d interface interface name to be detached\n" 128251139Sluigi "\t-a interface interface name to be attached\n" 129251139Sluigi "\t-h interface interface name to be attached with the host stack\n" 130251139Sluigi "\t-l list all or specified bridge's interfaces\n" 131251139Sluigi "", command); 132251139Sluigi return 0; 133251139Sluigi } 134251139Sluigi 135251139Sluigi while ((ch = getopt(argc, argv, "d:a:h:g:l:")) != -1) { 136251139Sluigi switch (ch) { 137251139Sluigi default: 138251139Sluigi fprintf(stderr, "bad option %c %s", ch, optarg); 139251139Sluigi goto usage; 140251139Sluigi case 'd': 141251139Sluigi nr_cmd = NETMAP_BDG_DETACH; 142251139Sluigi break; 143251139Sluigi case 'a': 144251139Sluigi nr_cmd = NETMAP_BDG_ATTACH; 145251139Sluigi break; 146251139Sluigi case 'h': 147251139Sluigi nr_cmd = NETMAP_BDG_ATTACH; 148251139Sluigi nr_arg = NETMAP_BDG_HOST; 149251139Sluigi break; 150251139Sluigi case 'g': 151251139Sluigi nr_cmd = 0; 152251139Sluigi break; 153251139Sluigi case 'l': 154251139Sluigi nr_cmd = NETMAP_BDG_LIST; 155251139Sluigi break; 156251139Sluigi } 157251139Sluigi name = optarg; 158251139Sluigi } 159251139Sluigi if (argc == 1) 160251139Sluigi nr_cmd = NETMAP_BDG_LIST; 161251139Sluigi bdg_ctl(name, nr_cmd, nr_arg); 162251139Sluigi return 0; 163251139Sluigi} 164