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station: factor out logic for choosing FT

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This commit is contained in:
James Prestwood 2021-05-12 16:01:38 -07:00 committed by Denis Kenzior
parent e8eb05feea
commit f95e3a02e8
1 changed files with 19 additions and 6 deletions
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25
src/station.c
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@ -1823,13 +1823,30 @@ static void station_preauthenticate_cb(struct netdev *netdev,
station_transition_reassociate(station, bss, new_hs); station_transition_reassociate(station, bss, new_hs);
} }
static bool station_can_fast_transition(struct handshake_state *hs,
struct scan_bss *bss)
{
uint16_t mdid;
if (!hs->mde)
return false;
if (ie_parse_mobility_domain_from_data(hs->mde, hs->mde[1] + 2,
&mdid, NULL, NULL) < 0)
return false;
if (bss->mde_present && l_get_le16(bss->mde) == mdid)
return true;
return false;
}
static void station_transition_start(struct station *station, static void station_transition_start(struct station *station,
struct scan_bss *bss) struct scan_bss *bss)
{ {
struct handshake_state *hs = netdev_get_handshake(station->netdev); struct handshake_state *hs = netdev_get_handshake(station->netdev);
struct network *connected = station->connected_network; struct network *connected = station->connected_network;
enum security security = network_get_security(connected); enum security security = network_get_security(connected);
uint16_t mdid;
struct handshake_state *new_hs; struct handshake_state *new_hs;
struct ie_rsn_info cur_rsne, target_rsne; struct ie_rsn_info cur_rsne, target_rsne;
@ -1839,12 +1856,8 @@ static void station_transition_start(struct station *station,
/* Reset AP roam flag, at this point the roaming behaves the same */ /* Reset AP roam flag, at this point the roaming behaves the same */
station->ap_directed_roaming = false; station->ap_directed_roaming = false;
if (hs->mde)
ie_parse_mobility_domain_from_data(hs->mde, hs->mde[1] + 2,
&mdid, NULL, NULL);
/* Can we use Fast Transition? */ /* Can we use Fast Transition? */
if (hs->mde && bss->mde_present && l_get_le16(bss->mde) == mdid) { if (station_can_fast_transition(hs, bss)) {
/* Rebuild handshake RSN for target AP */ /* Rebuild handshake RSN for target AP */
if (station_build_handshake_rsn(hs, station->wiphy, if (station_build_handshake_rsn(hs, station->wiphy,
station->connected_network, bss) < 0) { station->connected_network, bss) < 0) {