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staging: r8188eu: Fix case where ethtype was never obtained and always be checked against 0

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Zero-initializing ether_type masked that the ether type would never be
obtained for 8021x packets and the comparison against eapol_type
would always fail.

Reported-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Larry Finger 2014-04-16 14:49:34 -05:00 committed by Greg Kroah-Hartman
parent f764cd68d9
commit 33c84bc14c
1 changed files with 6 additions and 9 deletions
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15
drivers/staging/rtl8188eu/core/rtw_recv.c
View file

@ -551,10 +551,9 @@ static struct recv_frame *portctrl(struct adapter *adapter,
struct sta_info *psta;
struct sta_priv *pstapriv;
struct recv_frame *prtnframe;
u16 ether_type = 0;
u16 ether_type;
u16 eapol_type = 0x888e;/* for Funia BD's WPA issue */
struct rx_pkt_attrib *pattrib;
__be16 be_tmp;
pstapriv = &adapter->stapriv;
@ -572,18 +571,16 @@ static struct recv_frame *portctrl(struct adapter *adapter,
RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########portctrl:adapter->securitypriv.dot11AuthAlgrthm=%d\n", adapter->securitypriv.dot11AuthAlgrthm));
if (auth_alg == 2) {
/* get ether_type */
ptr = ptr + pfhdr->attrib.hdrlen + LLC_HEADER_SIZE;
memcpy(&ether_type, ptr, 2);
ether_type = ntohs((unsigned short)ether_type);
if ((psta != NULL) && (psta->ieee8021x_blocked)) {
/* blocked */
/* only accept EAPOL frame */
RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########portctrl:psta->ieee8021x_blocked==1\n"));
prtnframe = precv_frame;
/* get ether_type */
ptr = ptr+pfhdr->attrib.hdrlen+pfhdr->attrib.iv_len+LLC_HEADER_SIZE;
memcpy(&be_tmp, ptr, 2);
ether_type = ntohs(be_tmp);
if (ether_type == eapol_type) {
prtnframe = precv_frame;
} else {