jeltz/hostap
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

Interworking: Share ANQP data within homogenous ESS

Browse source 
If two BSS entries have the same HESSID and SSID, share the fetched ANQP
information between these BSS entries to save memory and GAS/ANQP
operations.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jouni Malinen 2012-09-04 17:22:42 +03:00 committed by Jouni Malinen
parent c739d7e968
commit 53c9fc1df6
1 changed files with 38 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

38
wpa_supplicant/interworking.c
View file

@ -1590,6 +1590,38 @@ static void interworking_select_network(struct wpa_supplicant *wpa_s)
}
static struct wpa_bss_anqp *
interworking_match_anqp_info(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
{
struct wpa_bss *other;
if (is_zero_ether_addr(bss->hessid))
return NULL; /* Cannot be in the same homegenous ESS */
dl_list_for_each(other, &wpa_s->bss, struct wpa_bss, list) {
if (other == bss)
continue;
if (other->anqp == NULL)
continue;
if (!(other->flags & WPA_BSS_ANQP_FETCH_TRIED))
continue;
if (os_memcmp(bss->hessid, other->hessid, ETH_ALEN) != 0)
continue;
if (bss->ssid_len != other->ssid_len ||
os_memcmp(bss->ssid, other->ssid, bss->ssid_len) != 0)
continue;
wpa_printf(MSG_DEBUG, "Interworking: Share ANQP data with "
"already fetched BSSID " MACSTR " and " MACSTR,
MAC2STR(other->bssid), MAC2STR(bss->bssid));
other->anqp->users++;
return other->anqp;
}
return NULL;
}
static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s)
{
struct wpa_bss *bss;
@ -1608,6 +1640,12 @@ static void interworking_next_anqp_fetch(struct wpa_supplicant *wpa_s)
if (!(bss->flags & WPA_BSS_ANQP_FETCH_TRIED)) {
if (bss->anqp == NULL) {
bss->anqp = interworking_match_anqp_info(wpa_s,
bss);
if (bss->anqp) {
/* Shared data already fetched */
continue;
}
bss->anqp = wpa_bss_anqp_alloc();
if (bss->anqp == NULL)
break;