From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vladislav Yasevich Subject: [PATCH v2 net 1/2] tg3: Allow for recieve of full-size 8021AD frames Date: Tue, 30 Sep 2014 19:39:36 -0400 Message-ID: <1412120377-11125-2-git-send-email-vyasevic@redhat.com> References: <1412120377-11125-1-git-send-email-vyasevic@redhat.com> Cc: prashant@broadcom.com, mchan@broadcom.com, sony.chacko@qlogic.com, Dept-HSGLinuxNICDev@qlogic.com, Vladislav Yasevich To: netdev@vger.kernel.org Return-path: Received: from mail-qa0-f47.google.com ([209.85.216.47]:63282 "EHLO mail-qa0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750818AbaI3Xjr (ORCPT ); Tue, 30 Sep 2014 19:39:47 -0400 Received: by mail-qa0-f47.google.com with SMTP id cm18so10185qab.20 for ; Tue, 30 Sep 2014 16:39:47 -0700 (PDT) In-Reply-To: <1412120377-11125-1-git-send-email-vyasevic@redhat.com> Sender: netdev-owner@vger.kernel.org List-ID: When receiving a vlan-tagged frame that still contains a vlan header, the length of the packet will be greater then MTU+ETH_HLEN since it will account of the extra vlan header. TG3 checks this for the case for 802.1Q, but not for 802.1ad. As a result, full sized 802.1ad frames get dropped by the card. Add a check for 802.1ad protocol when receving full sized frames. Suggested-by: Prashant Sreedharan CC: Prashant Sreedharan CC: Michael Chan Signed-off-by: Vladislav Yasevich --- drivers/net/ethernet/broadcom/tg3.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index e7d3a62..ba49948 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -6918,7 +6918,8 @@ static int tg3_rx(struct tg3_napi *tnapi, int budget) skb->protocol = eth_type_trans(skb, tp->dev); if (len > (tp->dev->mtu + ETH_HLEN) && - skb->protocol != htons(ETH_P_8021Q)) { + skb->protocol != htons(ETH_P_8021Q) && + skb->protocol != htons(ETH_P_8021AD)) { dev_kfree_skb_any(skb); goto drop_it_no_recycle; } -- 1.9.3