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net: dsa: Drop WARN() in tag_brcm.c

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We may be able to see invalid Broadcom tags when the hardware and drivers are
misconfigured, or just while exercising the error path. Instead of flooding
the console with messages, flat out drop the packet.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2017-01-23 19:19:07 -08:00 committed by David S. Miller
parent 3ebe8344eb
commit 82272db84d
1 changed files with 2 additions and 1 deletions
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3
net/dsa/tag_brcm.c
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@ -121,7 +121,8 @@ static int brcm_tag_rcv(struct sk_buff *skb, struct net_device *dev,
/* We should never see a reserved reason code without knowing how to
* handle it
*/
WARN_ON(brcm_tag[2] & BRCM_EG_RC_RSVD);
if (unlikely(brcm_tag[2] & BRCM_EG_RC_RSVD))
goto out_drop;
/* Locate which port this is coming from */
source_port = brcm_tag[3] & BRCM_EG_PID_MASK;