From: Stephen Hemminger <shemminger@vyatta.com>
To: David Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Subject: [PATCH 6/6] vxlan: fix receive checksum handling
Date: Tue, 09 Oct 2012 10:56:43 -0700 [thread overview]
Message-ID: <20121009175714.849300563@vyatta.com> (raw)
In-Reply-To: 20121009175637.048993312@vyatta.com
[-- Attachment #1: vxlan-checksum.patch --]
[-- Type: text/plain, Size: 1198 bytes --]
The VXLAN drive was trying to use postpull_rcsum to allow receive checksum
offload to work on drivers using CHECKSUM_COMPLETE method. But this
doesn't work correctly. Just force full receive checksum on received
packet.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
--- a/drivers/net/vxlan.c 2012-10-09 10:49:19.830648777 -0700
+++ b/drivers/net/vxlan.c 2012-10-09 10:49:30.982538112 -0700
@@ -537,7 +537,6 @@ static int vxlan_udp_encap_recv(struct s
}
__skb_pull(skb, sizeof(struct vxlanhdr));
- skb_postpull_rcsum(skb, eth_hdr(skb), sizeof(struct vxlanhdr));
/* Is this VNI defined? */
vni = ntohl(vxh->vx_vni) >> 8;
@@ -556,7 +555,6 @@ static int vxlan_udp_encap_recv(struct s
/* Re-examine inner Ethernet packet */
oip = ip_hdr(skb);
skb->protocol = eth_type_trans(skb, vxlan->dev);
- skb_postpull_rcsum(skb, eth_hdr(skb), ETH_HLEN);
/* Ignore packet loops (and multicast echo) */
if (compare_ether_addr(eth_hdr(skb)->h_source,
@@ -568,6 +566,7 @@ static int vxlan_udp_encap_recv(struct s
__skb_tunnel_rx(skb, vxlan->dev);
skb_reset_network_header(skb);
+ skb->ip_summed = CHECKSUM_NONE;
err = IP_ECN_decapsulate(oip, skb);
if (unlikely(err)) {
prev parent reply other threads:[~2012-10-09 18:01 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-09 17:56 [PATCH 0/6] VXLAN fixes Stephen Hemminger
2012-10-09 17:56 ` [PATCH 1/6] vxlan: minor output refactoring Stephen Hemminger
2012-10-09 18:27 ` Joe Perches
2012-10-09 18:29 ` Stephen Hemminger
2012-10-10 8:08 ` David Laight
2012-10-09 17:56 ` [PATCH 2/6] vxlan: use ip_route_output Stephen Hemminger
2012-10-09 17:56 ` [PATCH 3/6] vxlan: associate with tunnel socket on xmit Stephen Hemminger
2012-10-09 17:56 ` [PATCH 4/6] VXLAN bases source UDP port based on flow to help the receiver to be able to load balance based on outer header flow Stephen Hemminger
2012-10-09 18:07 ` Stephen Hemminger
2012-10-09 18:14 ` David Miller
2012-10-09 18:38 ` Ben Hutchings
2012-10-09 17:56 ` [PATCH 5/6] vxlan: add additional headroom Stephen Hemminger
2012-10-09 17:56 ` Stephen Hemminger [this message]
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