wlan: Support for GTK rekey offload
Earlier case supplicant was handling GTK rekeying
even when wlan suspended thus wlan host had to
come out from the sleep for GTK rekeying.
with this change, support for GTK offload has been added
so that firmware will take care of GTK rekey when
wlan is in suspend mode.
CRs-fixed: 467114
Change-Id: Ia7e62e3a0048fd2417edbd052748e3272367a237
diff --git a/CORE/HDD/src/wlan_hdd_cfg80211.c b/CORE/HDD/src/wlan_hdd_cfg80211.c
index a82747f..338c816 100644
--- a/CORE/HDD/src/wlan_hdd_cfg80211.c
+++ b/CORE/HDD/src/wlan_hdd_cfg80211.c
@@ -4878,6 +4878,16 @@
}
}
#endif /* FEATURE_WLAN_WAPI */
+#ifdef WLAN_FEATURE_GTK_OFFLOAD
+ /* Initializing gtkOffloadRequestParams */
+ if ((WLAN_HDD_INFRA_STATION == pAdapter->device_mode) ||
+ (WLAN_HDD_P2P_CLIENT == pAdapter->device_mode))
+ {
+ pHddStaCtx->gtkOffloadRequestParams.requested = FALSE;
+ memset(&pHddStaCtx->gtkOffloadRequestParams.gtkOffloadReqParams,
+ 0, sizeof (tSirGtkOffloadParams));
+ }
+#endif
pRoamProfile->csrPersona = pAdapter->device_mode;
if( operatingChannel )
@@ -7216,6 +7226,140 @@
}
#endif
+#ifdef WLAN_FEATURE_GTK_OFFLOAD
+/*
+ * FUNCTION: wlan_hdd_cfg80211_update_replayCounterCallback
+ * Callback rountine called upon receiving response for
+ * get offload info
+ */
+void wlan_hdd_cfg80211_update_replayCounterCallback(void *callbackContext,
+ tpSirGtkOffloadGetInfoRspParams pGtkOffloadGetInfoRsp)
+{
+
+ hdd_adapter_t *pAdapter = (hdd_adapter_t *)callbackContext;
+
+ ENTER();
+
+ if (NULL == pAdapter)
+ {
+ VOS_TRACE( VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_FATAL,
+ "%s: HDD adapter is Null", __func__);
+ return ;
+ }
+
+ if (NULL == pGtkOffloadGetInfoRsp)
+ {
+ VOS_TRACE( VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_ERROR,
+ "%s: pGtkOffloadGetInfoRsp is Null", __func__);
+ return ;
+ }
+
+ if (VOS_STATUS_SUCCESS != pGtkOffloadGetInfoRsp->ulStatus)
+ {
+ VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_ERROR,
+ "%s: wlan Failed to get replay counter value",
+ __func__);
+ return ;
+ }
+
+ /* Update replay counter to NL */
+ cfg80211_gtk_rekey_notify(pAdapter->dev, pGtkOffloadGetInfoRsp->bssId,
+ (tANI_U8 *)&pGtkOffloadGetInfoRsp->ullKeyReplayCounter, GFP_KERNEL);
+}
+
+/*
+ * FUNCTION: wlan_hdd_cfg80211_set_rekey_data
+ * This function is used to offload GTK rekeying job to the firmware.
+ */
+int wlan_hdd_cfg80211_set_rekey_data(struct wiphy *wiphy, struct net_device *dev,
+ struct cfg80211_gtk_rekey_data *data)
+{
+ hdd_adapter_t *pAdapter = WLAN_HDD_GET_PRIV_PTR(dev);
+ hdd_context_t *pHddCtx = wiphy_priv(wiphy);
+ hdd_station_ctx_t *pHddStaCtx;
+ tHalHandle hHal;
+ tpSirGtkOffloadParams pGtkOffloadReqParams;
+ eHalStatus status = eHAL_STATUS_FAILURE;
+
+ ENTER();
+
+ if (NULL == pAdapter)
+ {
+ VOS_TRACE( VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_FATAL,
+ "%s: HDD adapter is Null", __func__);
+ return -ENODEV;
+ }
+
+ if (NULL == pHddCtx)
+ {
+ VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_ERROR,
+ "%s: HDD context is Null!!!", __func__);
+ return -ENODEV;
+ }
+
+ if (pHddCtx->isLogpInProgress)
+ {
+ VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_FATAL,
+ "%s: LOGP in Progress. Ignore!!!", __func__);
+ return -EAGAIN;
+ }
+
+ if (pHddCtx->isLoadUnloadInProgress)
+ {
+ VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_FATAL,
+ "%s: Unloading/Loading in Progress. Ignore!!!", __func__);
+ return -EAGAIN;
+ }
+
+ pHddStaCtx = WLAN_HDD_GET_STATION_CTX_PTR(pAdapter);
+ hHal = WLAN_HDD_GET_HAL_CTX(pAdapter);
+ if (NULL == hHal)
+ {
+ VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_ERROR,
+ "%s: HAL context is Null!!!", __func__);
+ return -EAGAIN;
+ }
+
+ pGtkOffloadReqParams =
+ &pHddStaCtx->gtkOffloadRequestParams.gtkOffloadReqParams;
+
+ pGtkOffloadReqParams->ulFlags = GTK_OFFLOAD_ENABLE;
+ memcpy(pGtkOffloadReqParams->aKCK, data->kck, NL80211_KCK_LEN);
+ memcpy(pGtkOffloadReqParams->aKEK, data->kek, NL80211_KEK_LEN);
+ memcpy(pGtkOffloadReqParams->bssId, &pHddStaCtx->conn_info.bssId,
+ WNI_CFG_BSSID_LEN);
+ memcpy(&pGtkOffloadReqParams->ullKeyReplayCounter, &data->replay_ctr,
+ sizeof (tANI_U64));
+
+ if (TRUE == pHddCtx->hdd_wlan_suspended)
+ {
+ /* if wlan is suspended, enable GTK offload directly from here */
+ status = sme_SetGTKOffload(hHal, pGtkOffloadReqParams,
+ pAdapter->sessionId);
+
+ if (eHAL_STATUS_SUCCESS != status)
+ {
+ VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_ERROR,
+ "%s: sme_SetGTKOffload failed, returned %d",
+ __func__, status);
+ return status;
+ }
+ pHddStaCtx->gtkOffloadRequestParams.requested = FALSE;
+ VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_INFO,
+ "%s: sme_SetGTKOffload successfull", __func__);
+ }
+ else
+ {
+ pHddStaCtx->gtkOffloadRequestParams.requested = TRUE;
+ VOS_TRACE(VOS_MODULE_ID_HDD, VOS_TRACE_LEVEL_INFO,
+ "%s: wlan not suspended GTKOffload request is stored",
+ __func__);
+ return eHAL_STATUS_SUCCESS;
+ }
+ return status;
+}
+#endif /*WLAN_FEATURE_GTK_OFFLOAD*/
+
/* cfg80211_ops */
static struct cfg80211_ops wlan_hdd_cfg80211_ops =
{
@@ -7272,5 +7416,8 @@
.tdls_mgmt = wlan_hdd_cfg80211_tdls_mgmt,
.tdls_oper = wlan_hdd_cfg80211_tdls_oper,
#endif
+#ifdef WLAN_FEATURE_GTK_OFFLOAD
+ .set_rekey_data = wlan_hdd_cfg80211_set_rekey_data,
+#endif /* WLAN_FEATURE_GTK_OFFLOAD */
};