diff mbox

[4/7] mwifiex: remove redundant TDLS setup action frame check

Message ID 1405137435-14045-1-git-send-email-bzhao@marvell.com (mailing list archive)
State Not Applicable, archived
Headers show

Commit Message

Bing Zhao July 12, 2014, 3:57 a.m. UTC
It's already been taken cared by the 'default' case in the
switch/case below.

Reported-by: Paul Stewart <pstew@chromium.org>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Avinash Patil <patila@marvell.com>
---
 drivers/net/wireless/mwifiex/tdls.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

Comments

Paul Stewart July 12, 2014, 2:01 p.m. UTC | #1
On Fri, Jul 11, 2014 at 8:57 PM, Bing Zhao <bzhao@marvell.com> wrote:
> It's already been taken cared by the 'default' case in the
> switch/case below.
>
> Reported-by: Paul Stewart <pstew@chromium.org>
> Signed-off-by: Bing Zhao <bzhao@marvell.com>
> Signed-off-by: Avinash Patil <patila@marvell.com>
> ---
>  drivers/net/wireless/mwifiex/tdls.c | 10 +++-------
>  1 file changed, 3 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/net/wireless/mwifiex/tdls.c b/drivers/net/wireless/mwifiex/tdls.c
> index a414161..57f972d 100644
> --- a/drivers/net/wireless/mwifiex/tdls.c
> +++ b/drivers/net/wireless/mwifiex/tdls.c
> @@ -791,19 +791,15 @@ void mwifiex_process_tdls_action_frame(struct mwifiex_private *priv,
>                 return;
>
>         peer = buf + ETH_ALEN;
> -       action = *(buf + sizeof(struct ethhdr) + 2);
>
> -       /* just handle TDLS setup request/response/confirm */
> -       if (action > WLAN_TDLS_SETUP_CONFIRM)
I'm going to assume that the intent of the original test was to avoid
allocation of sta_ptr below in the case where the action was invalid.
Is it okay to allocate this pointer and not do anything with it below?
> +       sta_ptr = mwifiex_add_sta_entry(priv, peer);
> +       if (!sta_ptr)
>                 return;
>
> +       action = *(buf + sizeof(struct ethhdr) + 2);
>         dev_dbg(priv->adapter->dev,
>                 "rx:tdls action: peer=%pM, action=%d\n", peer, action);
>
> -       sta_ptr = mwifiex_add_sta_entry(priv, peer);
> -       if (!sta_ptr)
> -               return;
> -
>         switch (action) {
>         case WLAN_TDLS_SETUP_REQUEST:
>                 if (len < (sizeof(struct ethhdr) + TDLS_REQ_FIX_LEN))
> --
> 1.8.2.3
>
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Bing Zhao July 15, 2014, 4:06 a.m. UTC | #2
Hi Paul,

Thanks for your comment.

> > @@ -791,19 +791,15 @@ void mwifiex_process_tdls_action_frame(struct mwifiex_private *priv,

> >                 return;

> >

> >         peer = buf + ETH_ALEN;

> > -       action = *(buf + sizeof(struct ethhdr) + 2);

> >

> > -       /* just handle TDLS setup request/response/confirm */

> > -       if (action > WLAN_TDLS_SETUP_CONFIRM)

> I'm going to assume that the intent of the original test was to avoid

> allocation of sta_ptr below in the case where the action was invalid.

> Is it okay to allocate this pointer and not do anything with it below?


I've sent v2 patch. Could you please review?

Thanks,
Bing

> > +       sta_ptr = mwifiex_add_sta_entry(priv, peer);

> > +       if (!sta_ptr)

> >                 return;

> >

> > +       action = *(buf + sizeof(struct ethhdr) + 2);

> >         dev_dbg(priv->adapter->dev,

> >                 "rx:tdls action: peer=%pM, action=%d\n", peer, action);

> >

> > -       sta_ptr = mwifiex_add_sta_entry(priv, peer);

> > -       if (!sta_ptr)

> > -               return;

> > -

> >         switch (action) {

> >         case WLAN_TDLS_SETUP_REQUEST:

> >                 if (len < (sizeof(struct ethhdr) + TDLS_REQ_FIX_LEN))

> > --

> > 1.8.2.3

> >
diff mbox

Patch

diff --git a/drivers/net/wireless/mwifiex/tdls.c b/drivers/net/wireless/mwifiex/tdls.c
index a414161..57f972d 100644
--- a/drivers/net/wireless/mwifiex/tdls.c
+++ b/drivers/net/wireless/mwifiex/tdls.c
@@ -791,19 +791,15 @@  void mwifiex_process_tdls_action_frame(struct mwifiex_private *priv,
 		return;
 
 	peer = buf + ETH_ALEN;
-	action = *(buf + sizeof(struct ethhdr) + 2);
 
-	/* just handle TDLS setup request/response/confirm */
-	if (action > WLAN_TDLS_SETUP_CONFIRM)
+	sta_ptr = mwifiex_add_sta_entry(priv, peer);
+	if (!sta_ptr)
 		return;
 
+	action = *(buf + sizeof(struct ethhdr) + 2);
 	dev_dbg(priv->adapter->dev,
 		"rx:tdls action: peer=%pM, action=%d\n", peer, action);
 
-	sta_ptr = mwifiex_add_sta_entry(priv, peer);
-	if (!sta_ptr)
-		return;
-
 	switch (action) {
 	case WLAN_TDLS_SETUP_REQUEST:
 		if (len < (sizeof(struct ethhdr) + TDLS_REQ_FIX_LEN))