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qcacld-3.0: Fix to have single PMK cache entry in FT roam

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In FT roam when the CSR lookup fails then the PMK details from
the roam sync indication will be updated to Session/PMK cache.
This will result in having multiple PMK cache entries for the
same MDID.
This fix is to avoid updating the Session/PMK cache in case of
FT roam and maintain a Single PMK cache that was set during the
set_pmksa.

Change-Id: Ie803a9816dece79c6d71e9963e11c6ec424306eb
CRs-Fixed: 2798720
This commit is contained in:
Srikanth Marepalli 2020-10-09 02:29:49 +05:30 • committed by Gerrit - the friendly Code Review server
commit daad108fa3
1 changed files with 16 additions and 1 deletions
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17
core/sme/src/csr/csr_api_roam.c
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@ -23107,6 +23107,8 @@ csr_process_roam_sync_callback(struct mac_context *mac_ctx,
wlan_scan_id scan_id;
struct wlan_crypto_pmksa *pmksa;
uint8_t ssid_offset;
enum csr_akm_type akm_type;
uint8_t mdie_present;
vdev = wlan_objmgr_get_vdev_by_id_from_psoc(mac_ctx->psoc, session_id,
WLAN_LEGACY_SME_ID);
@ -23427,6 +23429,9 @@ csr_process_roam_sync_callback(struct mac_context *mac_ctx,
sme_debug("Trying to find PMKID for " QDF_MAC_ADDR_FMT " AKM Type:%d",
QDF_MAC_ADDR_REF(pmkid_cache->BSSID.bytes),
session->pCurRoamProfile->negotiatedAuthType);
akm_type = session->connectedProfile.AuthType;
mdie_present = session->connectedProfile.mdid.mdie_present;
if (csr_lookup_pmkid_using_bssid(mac_ctx, session,
pmkid_cache)) {
session->pmk_len = pmkid_cache->pmk_len;
@ -23440,7 +23445,17 @@ csr_process_roam_sync_callback(struct mac_context *mac_ctx,
} else {
sme_debug("PMKID Not found in cache for " QDF_MAC_ADDR_FMT,
QDF_MAC_ADDR_REF(pmkid_cache->BSSID.bytes));
if (roam_synch_data->pmk_len) {
/*
* In FT roam when the CSR lookup fails then the PMK
* details from the roam sync indication will be
* updated to Session/PMK cache. This will result in
* having multiple PMK cache entries for the same MDID,
* So do not add the PMKSA cache entry in all the
* FT-Roam cases.
*/
if (!csr_is_auth_type11r(mac_ctx, akm_type,
mdie_present) &&
roam_synch_data->pmk_len) {
pmksa = qdf_mem_malloc(sizeof(*pmksa));
if (!pmksa) {
status = QDF_STATUS_E_NOMEM;