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qcacld-3.0: Check for adapter validity in pre cac work

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Check for adapter validity for pre cac adapter close work function
and hdd context validity to avoid crash during race condition in
SSR case.

Change-Id: I6c167e8f1a8199c63fba905fff4e781d244c7dc1
CRs-fixed: 2021403
This commit is contained in:
Manikandan Mohan 2017-03-17 14:55:17 -07:00 • committed by Sandeep Puligilla
commit 7ef504ef79
1 changed files with 26 additions and 13 deletions
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57
core/hdd/src/wlan_hdd_hostapd.c
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@ -890,6 +890,40 @@ static int wlan_hdd_set_pre_cac_complete_status(hdd_adapter_t *ap_adapter,
return 0;
}
/**
* __wlan_hdd_sap_pre_cac_failure() - Process the pre cac failure
* @data: AP adapter
*
* Deletes the pre cac adapter
*
* Return: None
*/
static void __wlan_hdd_sap_pre_cac_failure(void *data)
{
hdd_adapter_t *adapter;
hdd_context_t *hdd_ctx;
ENTER();
adapter = (hdd_adapter_t *) data;
if (!adapter ||
adapter->magic != WLAN_HDD_ADAPTER_MAGIC) {
hdd_err("SAP Pre CAC adapter invalid");
return;
}
hdd_ctx = (hdd_context_t *) (adapter->pHddCtx);
if (wlan_hdd_validate_context(hdd_ctx)) {
hdd_err("HDD context is null");
return;
}
wlan_hdd_release_intf_addr(hdd_ctx,
adapter->macAddressCurrent.bytes);
hdd_stop_adapter(hdd_ctx, adapter, true);
hdd_close_adapter(hdd_ctx, adapter, false);
}
/**
* wlan_hdd_sap_pre_cac_failure() - Process the pre cac failure
* @data: AP adapter
@ -900,32 +934,11 @@ static int wlan_hdd_set_pre_cac_complete_status(hdd_adapter_t *ap_adapter,
*/
void wlan_hdd_sap_pre_cac_failure(void *data)
{
hdd_adapter_t *pHostapdAdapter;
hdd_context_t *hdd_ctx;
ENTER();
pHostapdAdapter = (hdd_adapter_t *) data;
if (!pHostapdAdapter) {
hdd_err("AP adapter is NULL");
return;
}
hdd_ctx = (hdd_context_t *) (pHostapdAdapter->pHddCtx);
if (!hdd_ctx) {
hdd_err("HDD context is null");
return;
}
cds_ssr_protect(__func__);
wlan_hdd_release_intf_addr(hdd_ctx,
pHostapdAdapter->macAddressCurrent.bytes);
hdd_stop_adapter(hdd_ctx, pHostapdAdapter, true);
hdd_close_adapter(hdd_ctx, pHostapdAdapter, false);
__wlan_hdd_sap_pre_cac_failure(data);
cds_ssr_unprotect(__func__);
}
/**
* wlan_hdd_sap_pre_cac_success() - Process the pre cac result
* @data: AP adapter