From d3c6094950589f034b2dc5c5e1cefa5b160a20e8 Mon Sep 17 00:00:00 2001 From: Jes Sorensen Date: Tue, 15 Apr 2014 19:44:22 +0200 Subject: [PATCH] staging: rtl8723au: OnProbeReq23a(): Use struct ieee80211_mgmt Simplify parsing of probe request frame Signed-off-by: Jes Sorensen Signed-off-by: Greg Kroah-Hartman --- drivers/staging/rtl8723au/core/rtw_mlme_ext.c | 22 ++++++++++--------- 1 file changed, 12 insertions(+), 10 deletions(-) diff --git a/drivers/staging/rtl8723au/core/rtw_mlme_ext.c b/drivers/staging/rtl8723au/core/rtw_mlme_ext.c index 0277ee63db0e..0264eda4bf62 100644 --- a/drivers/staging/rtl8723au/core/rtw_mlme_ext.c +++ b/drivers/staging/rtl8723au/core/rtw_mlme_ext.c @@ -667,9 +667,8 @@ OnProbeReq23a(struct rtw_adapter *padapter, struct recv_frame *precv_frame) struct mlme_ext_info *pmlmeinfo = &pmlmeext->mlmext_info; struct wlan_bssid_ex *cur = &pmlmeinfo->network; struct sk_buff *skb = precv_frame->pkt; - struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; - u8 *pframe = skb->data; - uint len = skb->len; + struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *) skb->data; + int len = skb->len; u8 is_valid_p2p_probereq = false; if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) @@ -680,10 +679,15 @@ OnProbeReq23a(struct rtw_adapter *padapter, struct recv_frame *precv_frame) WIFI_ADHOC_MASTER_STATE | WIFI_AP_STATE)) return _SUCCESS; - pframe += (sizeof(struct ieee80211_hdr_3addr) + _PROBEREQ_IE_OFFSET_); - len -= (sizeof(struct ieee80211_hdr_3addr) + _PROBEREQ_IE_OFFSET_); + if (unlikely(!ieee80211_is_probe_req(mgmt->frame_control))) { + printk(KERN_WARNING "%s: Received non probe request frame\n", + __func__); + return _FAIL; + } - ie = cfg80211_find_ie(WLAN_EID_SSID, pframe, len); + len -= offsetof(struct ieee80211_mgmt, u.probe_req.variable); + + ie = cfg80211_find_ie(WLAN_EID_SSID, mgmt->u.probe_req.variable, len); /* check (wildcard) SSID */ if (!ie) @@ -698,10 +702,8 @@ OnProbeReq23a(struct rtw_adapter *padapter, struct recv_frame *precv_frame) } if (check_fwstate(pmlmepriv, _FW_LINKED) && - pmlmepriv->cur_network.join_res) { - issue_probersp23a(padapter, ieee80211_get_SA(hdr), - is_valid_p2p_probereq); - } + pmlmepriv->cur_network.join_res) + issue_probersp23a(padapter, mgmt->sa, is_valid_p2p_probereq); out: return _SUCCESS; -- 2.30.2