hwsim_test: Tool for testing data connectivity with mac80211_hwsim
This program can be used to verify that both unicast and broadcast data frames can be transmitted successfully through mac80211_hwsim interfaces.
This commit is contained in:
Jouni Malinen
Jouni Malinen
parent
92305c5d9a
commit
9e8cda5a46
2 changed files with 255 additions and 0 deletions
11
mac80211_hwsim/tools/Makefile
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11
mac80211_hwsim/tools/Makefile
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all: hwsim_test
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ifndef CC
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CC=gcc
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endif
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ifndef CFLAGS
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CFLAGS = -O2 -Wall -g
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endif
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hwsim_test: hwsim_test.o
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244
mac80211_hwsim/tools/hwsim_test.c
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244
mac80211_hwsim/tools/hwsim_test.c
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/*
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* hwsim_test - Data connectivity test for mac80211_hwsim
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* Copyright (c) 2009, Atheros Communications
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Alternatively, this software may be distributed under the terms of BSD
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* license.
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*
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* See README and COPYING for more details.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/select.h>
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#include <netpacket/packet.h>
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#include <net/ethernet.h>
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#include <net/if.h>
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#include <arpa/inet.h>
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#define MAC2STR(a) (a)[0], (a)[1], (a)[2], (a)[3], (a)[4], (a)[5]
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#define MACSTR "%02x:%02x:%02x:%02x:%02x:%02x"
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#define HWSIM_ETHERTYPE ETHERTYPE_IP
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#define HWSIM_PACKETLEN 1500
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static unsigned char addr1[ETH_ALEN], addr2[ETH_ALEN], bcast[ETH_ALEN];
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static void tx(int s, const char *ifname, int ifindex,
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const unsigned char *src, const unsigned char *dst)
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{
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char buf[HWSIM_PACKETLEN], *pos;
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struct ether_header *eth;
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int i;
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printf("TX: %s(ifindex=%d) " MACSTR " -> " MACSTR "\n",
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ifname, ifindex, MAC2STR(src), MAC2STR(dst));
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eth = (struct ether_header *) buf;
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memcpy(eth->ether_dhost, dst, ETH_ALEN);
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memcpy(eth->ether_shost, src, ETH_ALEN);
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eth->ether_type = htons(HWSIM_ETHERTYPE);
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pos = (char *) (eth + 1);
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for (i = 0; i < sizeof(buf) - sizeof(*eth); i++)
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*pos++ = i;
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if (send(s, buf, sizeof(buf), 0) < 0)
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perror("send");
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}
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struct rx_result {
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int rx_unicast1:1;
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int rx_broadcast1:1;
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int rx_unicast2:1;
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int rx_broadcast2:1;
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};
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static void rx(int s, int iface, const char *ifname, int ifindex,
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struct rx_result *res)
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{
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char buf[HWSIM_PACKETLEN + 1], *pos;
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struct ether_header *eth;
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int len, i;
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len = recv(s, buf, sizeof(buf), 0);
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if (len < 0) {
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perror("recv");
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return;
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}
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eth = (struct ether_header *) buf;
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printf("RX: %s(ifindex=%d) " MACSTR " -> " MACSTR " (len=%d)\n",
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ifname, ifindex,
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MAC2STR(eth->ether_shost), MAC2STR(eth->ether_dhost), len);
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if (len != HWSIM_PACKETLEN) {
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printf("Ignore frame with unexpected RX length\n");
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return;
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}
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pos = (char *) (eth + 1);
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for (i = 0; i < sizeof(buf) - 1 - sizeof(*eth); i++) {
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if ((unsigned char) *pos != (unsigned char) i) {
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printf("Ignore frame with unexpected contents\n");
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printf("i=%d received=0x%x expected=0x%x\n",
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i, (unsigned char) *pos, (unsigned char) i);
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return;
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}
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pos++;
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}
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if (iface == 1 &&
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memcmp(eth->ether_dhost, addr1, ETH_ALEN) == 0 &&
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memcmp(eth->ether_shost, addr2, ETH_ALEN) == 0)
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res->rx_unicast1 = 1;
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else if (iface == 1 &&
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memcmp(eth->ether_dhost, bcast, ETH_ALEN) == 0 &&
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memcmp(eth->ether_shost, addr2, ETH_ALEN) == 0)
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res->rx_broadcast1 = 1;
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else if (iface == 2 &&
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memcmp(eth->ether_dhost, addr2, ETH_ALEN) == 0 &&
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memcmp(eth->ether_shost, addr1, ETH_ALEN) == 0)
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res->rx_unicast2 = 1;
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else if (iface == 2 &&
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memcmp(eth->ether_dhost, bcast, ETH_ALEN) == 0 &&
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memcmp(eth->ether_shost, addr1, ETH_ALEN) == 0)
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res->rx_broadcast2 = 1;
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}
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int main(int argc, char *argv[])
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{
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int s1 = -1, s2 = -1, ret = -1;
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struct ifreq ifr;
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int ifindex1, ifindex2;
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struct sockaddr_ll ll;
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fd_set rfds;
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struct timeval tv;
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struct rx_result res;
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if (argc != 3) {
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fprintf(stderr, "usage: hwsim_test <ifname1> <ifname2>\n");
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return -1;
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}
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memset(bcast, 0xff, ETH_ALEN);
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s1 = socket(PF_PACKET, SOCK_RAW, htons(HWSIM_ETHERTYPE));
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if (s1 < 0) {
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perror("socket");
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goto fail;
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}
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s2 = socket(PF_PACKET, SOCK_RAW, htons(HWSIM_ETHERTYPE));
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if (s2 < 0) {
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perror("socket");
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goto fail;
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}
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memset(&ifr, 0, sizeof(ifr));
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strncpy(ifr.ifr_name, argv[1], sizeof(ifr.ifr_name));
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if (ioctl(s1, SIOCGIFINDEX, &ifr) < 0) {
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perror("ioctl[SIOCGIFINDEX]");
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goto fail;
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}
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ifindex1 = ifr.ifr_ifindex;
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if (ioctl(s1, SIOCGIFHWADDR, &ifr) < 0) {
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perror("ioctl[SIOCGIFHWADDR]");
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goto fail;
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}
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memcpy(addr1, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
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memset(&ifr, 0, sizeof(ifr));
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strncpy(ifr.ifr_name, argv[2], sizeof(ifr.ifr_name));
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if (ioctl(s2, SIOCGIFINDEX, &ifr) < 0) {
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perror("ioctl[SIOCGIFINDEX]");
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goto fail;
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}
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ifindex2 = ifr.ifr_ifindex;
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if (ioctl(s2, SIOCGIFHWADDR, &ifr) < 0) {
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perror("ioctl[SIOCGIFHWADDR]");
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goto fail;
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}
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memcpy(addr2, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
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memset(&ll, 0, sizeof(ll));
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ll.sll_family = PF_PACKET;
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ll.sll_ifindex = ifindex1;
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ll.sll_protocol = htons(HWSIM_ETHERTYPE);
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if (bind(s1, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
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perror("bind");
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goto fail;
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}
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memset(&ll, 0, sizeof(ll));
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ll.sll_family = PF_PACKET;
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ll.sll_ifindex = ifindex2;
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ll.sll_protocol = htons(HWSIM_ETHERTYPE);
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if (bind(s2, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
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perror("bind");
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goto fail;
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}
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tx(s1, argv[1], ifindex1, addr1, addr2);
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tx(s1, argv[1], ifindex1, addr1, bcast);
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tx(s2, argv[2], ifindex2, addr2, addr1);
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tx(s2, argv[2], ifindex2, addr2, bcast);
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tv.tv_sec = 1;
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tv.tv_usec = 0;
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memset(&res, 0, sizeof(res));
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for (;;) {
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int r;
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FD_ZERO(&rfds);
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FD_SET(s1, &rfds);
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FD_SET(s2, &rfds);
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r = select(s2 + 1, &rfds, NULL, NULL, &tv);
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if (r < 0) {
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perror("select");
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goto fail;
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}
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if (r == 0)
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break; /* timeout */
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if (FD_SET(s1, &rfds))
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rx(s1, 1, argv[1], ifindex1, &res);
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if (FD_SET(s2, &rfds))
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rx(s2, 2, argv[2], ifindex2, &res);
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if (res.rx_unicast1 && res.rx_broadcast1 &&
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res.rx_unicast2 && res.rx_broadcast2) {
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ret = 0;
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break;
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}
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}
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if (ret) {
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printf("Did not receive all expected frames:\n"
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"rx_unicast1=%d rx_broadcast1=%d "
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"rx_unicast2=%d rx_broadcast2=%d\n",
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res.rx_unicast1, res.rx_broadcast1,
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res.rx_unicast2, res.rx_broadcast2);
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} else {
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printf("Both unicast and broadcast working in both "
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"directions\n");
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}
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fail:
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close(s1);
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close(s2);
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return ret;
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}
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