From: Hariprasad Shenai <hariprasad@chelsio.com>
Date: Tue, 13 Sep 2016 08:09:24 +0000 (+0530)
Subject: cxgb4vf: don't offload Rx checksums for IPv6 fragments
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5400e54add3618759ef607a97d711e356eef6e2a;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

cxgb4vf: don't offload Rx checksums for IPv6 fragments

The checksum provided by the device doesn't include the L3 headers,
as IPv6 expects

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/sge.c b/drivers/net/ethernet/chelsio/cxgb4vf/sge.c
index c8fd4f8fe1fa..f3ed9ce99e5e 100644
--- a/drivers/net/ethernet/chelsio/cxgb4vf/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb4vf/sge.c
@@ -1648,14 +1648,15 @@ int t4vf_ethrx_handler(struct sge_rspq *rspq, const __be64 *rsp,
 
 	if (csum_ok && !pkt->err_vec &&
 	    (be32_to_cpu(pkt->l2info) & (RXF_UDP_F | RXF_TCP_F))) {
-		if (!pkt->ip_frag)
+		if (!pkt->ip_frag) {
 			skb->ip_summed = CHECKSUM_UNNECESSARY;
-		else {
+			rxq->stats.rx_cso++;
+		} else if (pkt->l2info & htonl(RXF_IP_F)) {
 			__sum16 c = (__force __sum16)pkt->csum;
 			skb->csum = csum_unfold(c);
 			skb->ip_summed = CHECKSUM_COMPLETE;
+			rxq->stats.rx_cso++;
 		}
-		rxq->stats.rx_cso++;
 	} else
 		skb_checksum_none_assert(skb);