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tests: Shorter TX/RX test frame support for hostapd

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wpa_supplicant already included support for this, but hostapd
DATA_TEST_* commands did not yet have support for using a shorter test
frame. This is needed for MACsec testing.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This commit is contained in:
Jouni Malinen 2019-06-03 17:48:47 +03:00
parent 59fcb3f0b1
commit abe025dd31
1 changed files with 35 additions and 12 deletions
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47
hostapd/ctrl_iface.c
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@ -1830,26 +1830,40 @@ static void hostapd_data_test_rx(void *ctx, const u8 *src_addr, const u8 *buf,
struct iphdr ip; struct iphdr ip;
const u8 *pos; const u8 *pos;
unsigned int i; unsigned int i;
char extra[30];
if (len != HWSIM_PACKETLEN) if (len < sizeof(*eth) + sizeof(ip) || len > HWSIM_PACKETLEN) {
wpa_printf(MSG_DEBUG,
"test data: RX - ignore unexpected length %d",
(int) len);
return; return;
}
eth = (const struct ether_header *) buf; eth = (const struct ether_header *) buf;
os_memcpy(&ip, eth + 1, sizeof(ip)); os_memcpy(&ip, eth + 1, sizeof(ip));
pos = &buf[sizeof(*eth) + sizeof(ip)]; pos = &buf[sizeof(*eth) + sizeof(ip)];
if (ip.ihl != 5 || ip.version != 4 || if (ip.ihl != 5 || ip.version != 4 ||
ntohs(ip.tot_len) != HWSIM_IP_LEN) ntohs(ip.tot_len) > HWSIM_IP_LEN) {
wpa_printf(MSG_DEBUG,
"test data: RX - ignore unexpect IP header");
return; return;
}
for (i = 0; i < HWSIM_IP_LEN - sizeof(ip); i++) { for (i = 0; i < ntohs(ip.tot_len) - sizeof(ip); i++) {
if (*pos != (u8) i) if (*pos != (u8) i) {
wpa_printf(MSG_DEBUG,
"test data: RX - ignore mismatching payload");
return; return;
}
pos++; pos++;
} }
wpa_msg(hapd->msg_ctx, MSG_INFO, "DATA-TEST-RX " MACSTR " " MACSTR, extra[0] = '\0';
MAC2STR(eth->ether_dhost), MAC2STR(eth->ether_shost)); if (ntohs(ip.tot_len) != HWSIM_IP_LEN)
os_snprintf(extra, sizeof(extra), " len=%d", ntohs(ip.tot_len));
wpa_msg(hapd->msg_ctx, MSG_INFO, "DATA-TEST-RX " MACSTR " " MACSTR "%s",
MAC2STR(eth->ether_dhost), MAC2STR(eth->ether_shost), extra);
} }
@ -1894,7 +1908,7 @@ static int hostapd_ctrl_iface_data_test_config(struct hostapd_data *hapd,
static int hostapd_ctrl_iface_data_test_tx(struct hostapd_data *hapd, char *cmd) static int hostapd_ctrl_iface_data_test_tx(struct hostapd_data *hapd, char *cmd)
{ {
u8 dst[ETH_ALEN], src[ETH_ALEN]; u8 dst[ETH_ALEN], src[ETH_ALEN];
char *pos; char *pos, *pos2;
int used; int used;
long int val; long int val;
u8 tos; u8 tos;
@ -1903,11 +1917,12 @@ static int hostapd_ctrl_iface_data_test_tx(struct hostapd_data *hapd, char *cmd)
struct iphdr *ip; struct iphdr *ip;
u8 *dpos; u8 *dpos;
unsigned int i; unsigned int i;
size_t send_len = HWSIM_IP_LEN;
if (hapd->l2_test == NULL) if (hapd->l2_test == NULL)
return -1; return -1;
/* format: <dst> <src> <tos> */ /* format: <dst> <src> <tos> [len=<length>] */
pos = cmd; pos = cmd;
used = hwaddr_aton2(pos, dst); used = hwaddr_aton2(pos, dst);
@ -1921,11 +1936,19 @@ static int hostapd_ctrl_iface_data_test_tx(struct hostapd_data *hapd, char *cmd)
return -1; return -1;
pos += used; pos += used;
val = strtol(pos, NULL, 0); val = strtol(pos, &pos2, 0);
if (val < 0 || val > 0xff) if (val < 0 || val > 0xff)
return -1; return -1;
tos = val; tos = val;
pos = os_strstr(pos2, " len=");
if (pos) {
i = atoi(pos + 5);
if (i < sizeof(*ip) || i > HWSIM_IP_LEN)
return -1;
send_len = i;
}
eth = (struct ether_header *) &buf[2]; eth = (struct ether_header *) &buf[2];
os_memcpy(eth->ether_dhost, dst, ETH_ALEN); os_memcpy(eth->ether_dhost, dst, ETH_ALEN);
os_memcpy(eth->ether_shost, src, ETH_ALEN); os_memcpy(eth->ether_shost, src, ETH_ALEN);
@ -1936,17 +1959,17 @@ static int hostapd_ctrl_iface_data_test_tx(struct hostapd_data *hapd, char *cmd)
ip->version = 4; ip->version = 4;
ip->ttl = 64; ip->ttl = 64;
ip->tos = tos; ip->tos = tos;
ip->tot_len = htons(HWSIM_IP_LEN); ip->tot_len = htons(send_len);
ip->protocol = 1; ip->protocol = 1;
ip->saddr = htonl(192U << 24 | 168 << 16 | 1 << 8 | 1); ip->saddr = htonl(192U << 24 | 168 << 16 | 1 << 8 | 1);
ip->daddr = htonl(192U << 24 | 168 << 16 | 1 << 8 | 2); ip->daddr = htonl(192U << 24 | 168 << 16 | 1 << 8 | 2);
ip->check = ipv4_hdr_checksum(ip, sizeof(*ip)); ip->check = ipv4_hdr_checksum(ip, sizeof(*ip));
dpos = (u8 *) (ip + 1); dpos = (u8 *) (ip + 1);
for (i = 0; i < HWSIM_IP_LEN - sizeof(*ip); i++) for (i = 0; i < send_len - sizeof(*ip); i++)
*dpos++ = i; *dpos++ = i;
if (l2_packet_send(hapd->l2_test, dst, ETHERTYPE_IP, &buf[2], if (l2_packet_send(hapd->l2_test, dst, ETHERTYPE_IP, &buf[2],
HWSIM_PACKETLEN) < 0) sizeof(struct ether_header) + send_len) < 0)
return -1; return -1;
wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "test data: TX dst=" MACSTR wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "test data: TX dst=" MACSTR