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wlantest: Determine ping matches properly for direct link

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Check ICMP echo request/response matches for both STAs to get proper
counter values for a ping from a one STA to another one using TDLS.
master
Jouni Malinen 14 years ago committed by Jouni Malinen
parent 719e7eb28d
commit 244c9303cb
3 changed files with 63 additions and 35 deletions
Show Stats Download Patch File Download Diff File

34
wlantest/rx_data.c
Unescape Escape View File

@ -61,14 +61,16 @@ static const char * data_stype(u16 stype)
static void rx_data_eth(struct wlantest *wt, const u8 *bssid,
const u8 *sta_addr, const u8 *dst, const u8 *src,
u16 ethertype, const u8 *data, size_t len, int prot)
u16 ethertype, const u8 *data, size_t len, int prot,
const u8 *peer_addr)
{
switch (ethertype) {
case ETH_P_PAE:
rx_data_eapol(wt, dst, src, data, len, prot);
break;
case ETH_P_IP:
rx_data_ip(wt, bssid, sta_addr, dst, src, data, len);
rx_data_ip(wt, bssid, sta_addr, dst, src, data, len,
peer_addr);
break;
case 0x890d:
rx_data_80211_encap(wt, bssid, sta_addr, dst, src, data, len);
@ -80,14 +82,16 @@ static void rx_data_eth(struct wlantest *wt, const u8 *bssid,
static void rx_data_process(struct wlantest *wt, const u8 *bssid,
const u8 *sta_addr,
const u8 *dst, const u8 *src,
const u8 *data, size_t len, int prot)
const u8 *data, size_t len, int prot,
const u8 *peer_addr)
{
if (len == 0)
return;
if (len >= 8 && os_memcmp(data, "\xaa\xaa\x03\x00\x00\x00", 6) == 0) {
rx_data_eth(wt, bssid, sta_addr, dst, src,
WPA_GET_BE16(data + 6), data + 8, len - 8, prot);
WPA_GET_BE16(data + 6), data + 8, len - 8, prot,
peer_addr);
return;
}
@ -181,7 +185,7 @@ skip_replay_det:
&dlen);
if (decrypted) {
rx_data_process(wt, bss->bssid, NULL, dst, src, decrypted,
dlen, 1);
dlen, 1, NULL);
os_memcpy(bss->rsc[keyid], pn, 6);
write_pcap_decrypted(wt, (const u8 *) hdr, 24 + (qos ? 2 : 0),
decrypted, dlen);
@ -334,8 +338,12 @@ skip_replay_det:
else
decrypted = ccmp_decrypt(sta->ptk.tk1, hdr, data, len, &dlen);
if (decrypted) {
u16 fc = le_to_host16(hdr->frame_control);
u8 *peer_addr = NULL;
if (!(fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)))
peer_addr = hdr->addr1;
rx_data_process(wt, bss->bssid, sta->addr, dst, src, decrypted,
dlen, 1);
dlen, 1, peer_addr);
os_memcpy(rsc, pn, 6);
write_pcap_decrypted(wt, (const u8 *) hdr, 24 + (qos ? 2 : 0),
decrypted, dlen);
@ -371,15 +379,23 @@ static void rx_data_bss(struct wlantest *wt, const struct ieee80211_hdr *hdr,
if (prot)
rx_data_bss_prot(wt, hdr, qos, dst, src, data, len);
else {
const u8 *bssid, *sta_addr;
const u8 *bssid, *sta_addr, *peer_addr;
int direct_link = !(fc & (WLAN_FC_FROMDS | WLAN_FC_TODS));
if (fc & WLAN_FC_TODS) {
bssid = hdr->addr1;
sta_addr = hdr->addr2;
} else {
peer_addr = NULL;
} else if (fc & WLAN_FC_FROMDS) {
bssid = hdr->addr2;
sta_addr = hdr->addr1;
peer_addr = NULL;
} else {
bssid = hdr->addr3;
sta_addr = hdr->addr2;
peer_addr = hdr->addr1;
}
rx_data_process(wt, bssid, sta_addr, dst, src, data, len, 0);
rx_data_process(wt, bssid, sta_addr, dst, src, data, len, 0,
peer_addr);
}
}

61
wlantest/rx_ip.c
Unescape Escape View File

@ -20,9 +20,35 @@
#include "wlantest.h"
static void ping_update(struct wlantest_sta *sta, int req, u32 src, u32 dst,
u16 id, u16 seq)
{
if (req) {
sta->icmp_echo_req_src = src;
sta->icmp_echo_req_dst = dst;
sta->icmp_echo_req_id = id;
sta->icmp_echo_req_seq = seq;
return;
}
if (sta->icmp_echo_req_src == dst &&
sta->icmp_echo_req_dst == src &&
sta->icmp_echo_req_id == id &&
sta->icmp_echo_req_seq == seq) {
sta->counters[WLANTEST_STA_COUNTER_PING_OK]++;
if (sta->counters[WLANTEST_STA_COUNTER_ASSOCREQ_TX] == 0 &&
sta->counters[WLANTEST_STA_COUNTER_REASSOCREQ_TX] == 0)
sta->counters[
WLANTEST_STA_COUNTER_PING_OK_FIRST_ASSOC]++;
wpa_printf(MSG_DEBUG, "ICMP echo (ping) match for STA " MACSTR,
MAC2STR(sta->addr));
}
}
static void rx_data_icmp(struct wlantest *wt, const u8 *bssid,
const u8 *sta_addr, u32 dst, u32 src,
const u8 *data, size_t len)
const u8 *data, size_t len, const u8 *peer_addr)
{
struct in_addr addr;
char buf[20];
@ -48,9 +74,10 @@ static void rx_data_icmp(struct wlantest *wt, const u8 *bssid,
addr.s_addr = dst;
snprintf(buf, sizeof(buf), "%s", inet_ntoa(addr));
addr.s_addr = src;
wpa_printf(MSG_DEBUG, "ICMP echo %s %s -> %s id=%04x seq=%u len=%u",
wpa_printf(MSG_DEBUG, "ICMP echo %s %s -> %s id=%04x seq=%u len=%u%s",
hdr->type == ICMP_ECHO ? "request" : "response",
inet_ntoa(addr), buf, id, seq, (unsigned) len - 8);
inet_ntoa(addr), buf, id, seq, (unsigned) len - 8,
peer_addr ? " [DL]" : "");
bss = bss_find(wt, bssid);
if (bss == NULL) {
@ -69,31 +96,15 @@ static void rx_data_icmp(struct wlantest *wt, const u8 *bssid,
return;
}
if (hdr->type == ICMP_ECHO) {
sta->icmp_echo_req_src = src;
sta->icmp_echo_req_dst = dst;
sta->icmp_echo_req_id = id;
sta->icmp_echo_req_seq = seq;
return;
}
if (sta->icmp_echo_req_src == dst &&
sta->icmp_echo_req_dst == src &&
sta->icmp_echo_req_id == id &&
sta->icmp_echo_req_seq == seq) {
sta->counters[WLANTEST_STA_COUNTER_PING_OK]++;
if (sta->counters[WLANTEST_STA_COUNTER_ASSOCREQ_TX] == 0 &&
sta->counters[WLANTEST_STA_COUNTER_REASSOCREQ_TX] == 0)
sta->counters[
WLANTEST_STA_COUNTER_PING_OK_FIRST_ASSOC]++;
wpa_printf(MSG_DEBUG, "ICMP echo (ping) match for STA " MACSTR,
MAC2STR(sta->addr));
}
ping_update(sta, hdr->type == ICMP_ECHO, src, dst, id, seq);
if (peer_addr && (sta = sta_find(bss, peer_addr)))
ping_update(sta, hdr->type == ICMP_ECHO, src, dst, id, seq);
}
void rx_data_ip(struct wlantest *wt, const u8 *bssid, const u8 *sta_addr,
const u8 *dst, const u8 *src, const u8 *data, size_t len)
const u8 *dst, const u8 *src, const u8 *data, size_t len,
const u8 *peer_addr)
{
const struct iphdr *ip;
const u8 *payload;
@ -146,7 +157,7 @@ void rx_data_ip(struct wlantest *wt, const u8 *bssid, const u8 *sta_addr,
switch (ip->protocol) {
case IPPROTO_ICMP:
rx_data_icmp(wt, bssid, sta_addr, ip->daddr, ip->saddr,
payload, plen);
payload, plen, peer_addr);
break;
}
}

3
wlantest/wlantest.h
Unescape Escape View File

@ -198,7 +198,8 @@ void rx_data(struct wlantest *wt, const u8 *data, size_t len);
void rx_data_eapol(struct wlantest *wt, const u8 *dst, const u8 *src,
const u8 *data, size_t len, int prot);
void rx_data_ip(struct wlantest *wt, const u8 *bssid, const u8 *sta_addr,
const u8 *dst, const u8 *src, const u8 *data, size_t len);
const u8 *dst, const u8 *src, const u8 *data, size_t len,
const u8 *peer_addr);
void rx_data_80211_encap(struct wlantest *wt, const u8 *bssid,
const u8 *sta_addr, const u8 *dst, const u8 *src,
const u8 *data, size_t len);

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