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FILS: Update PMKSA cache with FILS shared key offload

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Add a new PMKSA cache entry within wpa_supplicant if a driver event from
offloaded FILS shared key authentication indicates a new PMKSA entry was
created.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Vidyullatha Kanchanapally 2017-03-22 16:10:05 +05:30 committed by Jouni Malinen
parent 01ef320f19
commit f705f41b7f
3 changed files with 30 additions and 0 deletions
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10
src/rsn_supp/wpa.c
View file

@ -3079,6 +3079,16 @@ wpa_sm_pmksa_cache_add_entry(struct wpa_sm *sm,
}
void wpa_sm_pmksa_cache_add(struct wpa_sm *sm, const u8 *pmk, size_t pmk_len,
const u8 *pmkid, const u8 *bssid,
const u8 *fils_cache_id)
{
sm->cur_pmksa = pmksa_cache_add(sm->pmksa, pmk, pmk_len, pmkid, NULL, 0,
bssid, sm->own_addr, sm->network_ctx,
sm->key_mgmt, fils_cache_id);
}
void wpa_sm_drop_sa(struct wpa_sm *sm)
{
wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: Clear old PMK and PTK");

3
src/rsn_supp/wpa.h
View file

@ -157,6 +157,9 @@ struct rsn_pmksa_cache_entry * wpa_sm_pmksa_cache_head(struct wpa_sm *sm);
struct rsn_pmksa_cache_entry *
wpa_sm_pmksa_cache_add_entry(struct wpa_sm *sm,
struct rsn_pmksa_cache_entry * entry);
void wpa_sm_pmksa_cache_add(struct wpa_sm *sm, const u8 *pmk, size_t pmk_len,
const u8 *pmkid, const u8 *bssid,
const u8 *fils_cache_id);
void wpa_sm_drop_sa(struct wpa_sm *sm);
int wpa_sm_has_ptk(struct wpa_sm *sm);

17
wpa_supplicant/events.c
View file

@ -3629,9 +3629,26 @@ static void wpa_supplicant_event_assoc_auth(struct wpa_supplicant *wpa_s,
data->assoc_info.ptk_kek_len);
#ifdef CONFIG_FILS
if (wpa_s->auth_alg == WPA_AUTH_ALG_FILS) {
struct wpa_bss *bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
const u8 *fils_cache_id = wpa_bss_get_fils_cache_id(bss);
/* Update ERP next sequence number */
eapol_sm_update_erp_next_seq_num(
wpa_s->eapol, data->assoc_info.fils_erp_next_seq_num);
if (data->assoc_info.fils_pmk && data->assoc_info.fils_pmkid) {
/* Add the new PMK and PMKID to the PMKSA cache */
wpa_sm_pmksa_cache_add(wpa_s->wpa,
data->assoc_info.fils_pmk,
data->assoc_info.fils_pmk_len,
data->assoc_info.fils_pmkid,
wpa_s->bssid, fils_cache_id);
} else if (data->assoc_info.fils_pmkid) {
/* Update the current PMKSA used for this connection */
pmksa_cache_set_current(wpa_s->wpa,
data->assoc_info.fils_pmkid,
NULL, NULL, 0, NULL);
}
} else {
wpa_sm_set_rx_replay_ctr(wpa_s->wpa,
data->assoc_info.key_replay_ctr);