* hwsim_test - Data connectivity test for mac80211_hwsim
* Copyright (c) 2009, Atheros Communications
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Alternatively, this software may be distributed under the terms of BSD
- * license.
- *
- * See README and COPYING for more details.
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
*/
#include <stdlib.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <arpa/inet.h>
+#include <netinet/ip.h>
#define MAC2STR(a) (a)[0], (a)[1], (a)[2], (a)[3], (a)[4], (a)[5]
#define MACSTR "%02x:%02x:%02x:%02x:%02x:%02x"
static unsigned char addr1[ETH_ALEN], addr2[ETH_ALEN], bcast[ETH_ALEN];
+static u_int16_t checksum(const void *buf, size_t len)
+{
+ size_t i;
+ u_int32_t sum = 0;
+ const u_int16_t *pos = buf;
+
+ for (i = 0; i < len / 2; i++)
+ sum += *pos++;
+
+ while (sum >> 16)
+ sum = (sum & 0xffff) + (sum >> 16);
+
+ return sum ^ 0xffff;
+}
+
+
static void tx(int s, const char *ifname, int ifindex,
- const unsigned char *src, const unsigned char *dst)
+ const unsigned char *src, const unsigned char *dst,
+ u_int8_t tos)
{
char buf[HWSIM_PACKETLEN], *pos;
struct ether_header *eth;
+ struct iphdr *ip;
int i;
printf("TX: %s(ifindex=%d) " MACSTR " -> " MACSTR "\n",
memcpy(eth->ether_dhost, dst, ETH_ALEN);
memcpy(eth->ether_shost, src, ETH_ALEN);
eth->ether_type = htons(HWSIM_ETHERTYPE);
- pos = (char *) (eth + 1);
- for (i = 0; i < sizeof(buf) - sizeof(*eth); i++)
+ ip = (struct iphdr *) (eth + 1);
+ memset(ip, 0, sizeof(*ip));
+ ip->ihl = 5;
+ ip->version = 4;
+ ip->ttl = 64;
+ ip->tos = tos;
+ ip->tot_len = htons(HWSIM_PACKETLEN - sizeof(*eth));
+ ip->protocol = 1;
+ ip->saddr = htonl(192 << 24 | 168 << 16 | 1 << 8 | 1);
+ ip->daddr = htonl(192 << 24 | 168 << 16 | 1 << 8 | 2);
+ ip->check = checksum(ip, sizeof(*ip));
+ pos = (char *) (ip + 1);
+ for (i = 0; i < sizeof(buf) - sizeof(*eth) - sizeof(*ip); i++)
*pos++ = i;
if (send(s, buf, sizeof(buf), 0) < 0)
struct rx_result {
- int rx_unicast1:1;
- int rx_broadcast1:1;
- int rx_unicast2:1;
- int rx_broadcast2:1;
+ unsigned int rx_unicast1:1;
+ unsigned int rx_broadcast1:1;
+ unsigned int rx_unicast2:1;
+ unsigned int rx_broadcast2:1;
};
{
char buf[HWSIM_PACKETLEN + 1], *pos;
struct ether_header *eth;
+ struct iphdr *ip;
int len, i;
len = recv(s, buf, sizeof(buf), 0);
MAC2STR(eth->ether_shost), MAC2STR(eth->ether_dhost), len);
if (len != HWSIM_PACKETLEN) {
- printf("Ignore frame with unexpected RX length\n");
+ printf("Ignore frame with unexpected RX length (%d)\n", len);
return;
}
- pos = (char *) (eth + 1);
- for (i = 0; i < sizeof(buf) - 1 - sizeof(*eth); i++) {
+ ip = (struct iphdr *) (eth + 1);
+ pos = (char *) (ip + 1);
+ for (i = 0; i < sizeof(buf) - 1 - sizeof(*eth) - sizeof(*ip); i++) {
if ((unsigned char) *pos != (unsigned char) i) {
printf("Ignore frame with unexpected contents\n");
printf("i=%d received=0x%x expected=0x%x\n",
}
+static void usage(void)
+{
+ fprintf(stderr, "usage: hwsim_test [-D<DSCP>] [-t<tos>] <ifname1> <ifname2>\n");
+}
+
+
int main(int argc, char *argv[])
{
- int s1 = -1, s2 = -1, ret = -1;
+ int s1 = -1, s2 = -1, ret = -1, c;
struct ifreq ifr;
int ifindex1, ifindex2;
struct sockaddr_ll ll;
fd_set rfds;
struct timeval tv;
struct rx_result res;
+ char *s_ifname, *d_ifname, *end;
+ int tos = 0;
+
+ for (;;) {
+ c = getopt(argc, argv, "D:t:");
+ if (c < 0)
+ break;
+ switch (c) {
+ case 'D':
+ tos = strtol(optarg, &end, 0) << 2;
+ if (*end) {
+ usage();
+ return -1;
+ }
+ break;
+ case 't':
+ tos = strtol(optarg, &end, 0);
+ if (*end) {
+ usage();
+ return -1;
+ }
+ break;
+ default:
+ usage();
+ return -1;
+ }
+ }
- if (argc != 3) {
- fprintf(stderr, "usage: hwsim_test <ifname1> <ifname2>\n");
+ if (optind != argc - 2) {
+ usage();
return -1;
}
+ s_ifname = argv[optind];
+ d_ifname = argv[optind + 1];
+
memset(bcast, 0xff, ETH_ALEN);
s1 = socket(PF_PACKET, SOCK_RAW, htons(HWSIM_ETHERTYPE));
}
memset(&ifr, 0, sizeof(ifr));
- strncpy(ifr.ifr_name, argv[1], sizeof(ifr.ifr_name));
+ strncpy(ifr.ifr_name, s_ifname, sizeof(ifr.ifr_name));
if (ioctl(s1, SIOCGIFINDEX, &ifr) < 0) {
perror("ioctl[SIOCGIFINDEX]");
goto fail;
memcpy(addr1, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
memset(&ifr, 0, sizeof(ifr));
- strncpy(ifr.ifr_name, argv[2], sizeof(ifr.ifr_name));
+ strncpy(ifr.ifr_name, d_ifname, sizeof(ifr.ifr_name));
if (ioctl(s2, SIOCGIFINDEX, &ifr) < 0) {
perror("ioctl[SIOCGIFINDEX]");
goto fail;
goto fail;
}
- tx(s1, argv[1], ifindex1, addr1, addr2);
- tx(s1, argv[1], ifindex1, addr1, bcast);
- tx(s2, argv[2], ifindex2, addr2, addr1);
- tx(s2, argv[2], ifindex2, addr2, bcast);
+ tx(s1, s_ifname, ifindex1, addr1, addr2, tos);
+ tx(s1, s_ifname, ifindex1, addr1, bcast, tos);
+ tx(s2, d_ifname, ifindex2, addr2, addr1, tos);
+ tx(s2, d_ifname, ifindex2, addr2, bcast, tos);
tv.tv_sec = 1;
tv.tv_usec = 0;
if (r == 0)
break; /* timeout */
- if (FD_SET(s1, &rfds))
- rx(s1, 1, argv[1], ifindex1, &res);
- if (FD_SET(s2, &rfds))
- rx(s2, 2, argv[2], ifindex2, &res);
+ if (FD_ISSET(s1, &rfds))
+ rx(s1, 1, s_ifname, ifindex1, &res);
+ if (FD_ISSET(s2, &rfds))
+ rx(s2, 2, d_ifname, ifindex2, &res);
if (res.rx_unicast1 && res.rx_broadcast1 &&
res.rx_unicast2 && res.rx_broadcast2) {
if (ret) {
printf("Did not receive all expected frames:\n"
- "rx_unicast1=%d rx_broadcast1=%d "
- "rx_unicast2=%d rx_broadcast2=%d\n",
+ "rx_unicast1=%u rx_broadcast1=%u "
+ "rx_unicast2=%u rx_broadcast2=%u\n",
res.rx_unicast1, res.rx_broadcast1,
res.rx_unicast2, res.rx_broadcast2);
} else {
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