staging: r8188eu: use ieee80211_mgmt for action category

Use the struct ieee80211_mgmt from ieee80211.h to read the action
category. There's no need to parse the incoming frame ourselves.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220502200652.143665-8-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/r8188eu/core/rtw_mlme_ext.c b/drivers/staging/r8188eu/core/rtw_mlme_ext.c
index 0df89bb..96b0da9 100644 (file)
--- a/drivers/staging/r8188eu/core/rtw_mlme_ext.c
+++ b/drivers/staging/r8188eu/core/rtw_mlme_ext.c
@@ -3871,15 +3871,9 @@ unsigned int OnAction_p2p(struct adapter *padapter, struct recv_frame *precv_fra
 
 unsigned int OnAction(struct adapter *padapter, struct recv_frame *precv_frame)
 {
-       unsigned char   category;
-       unsigned char   *frame_body;
-       u8 *pframe = precv_frame->rx_data;
-
-       frame_body = (unsigned char *)(pframe + sizeof(struct ieee80211_hdr_3addr));
-
-       category = frame_body[0];
+       struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)precv_frame->rx_data;
 
-       switch (category) {
+       switch (mgmt->u.action.category) {
        case RTW_WLAN_CATEGORY_BACK:
                OnAction_back(padapter, precv_frame);
                break;