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From:   Jon Maxwell <jmaxwell37@gmail.com>
To:     davem@davemloft.net
Cc:     dsahern@gmail.com, mschiffer@universe-factory.net,
        zhangshengju@cmss.chinamobile.com, ktkhai@virtuozzo.com,
        netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
        jmaxwell@redhat.com
Subject: [PATCH net-next] ifb: fix packets checksum
Date:   Fri, 25 May 2018 07:38:29 +1000
Message-Id: <20180524213829.15208-1-jmaxwell37@gmail.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Fixup the checksum for CHECKSUM_COMPLETE when pulling skbs on RX path. 
Otherwise we get splats when tc mirred is used to redirect packets to ifb.

Before fix:

nic: hw csum failure

Signed-off-by: Jon Maxwell <jmaxwell37@gmail.com>
---
 drivers/net/ifb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ifb.c b/drivers/net/ifb.c
index 5f2897ec0edc..d345c61d476c 100644
--- a/drivers/net/ifb.c
+++ b/drivers/net/ifb.c
@@ -102,7 +102,7 @@ static void ifb_ri_tasklet(unsigned long _txp)
 		if (!skb->tc_from_ingress) {
 			dev_queue_xmit(skb);
 		} else {
-			skb_pull(skb, skb->mac_len);
+			skb_pull_rcsum(skb, skb->mac_len);
 			netif_receive_skb(skb);
 		}
 	}
-- 
2.13.6