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authorJesse Gross <jesse@nicira.com>2015-04-09 11:19:14 -0700
committerDavid S. Miller <davem@davemloft.net>2015-04-09 14:56:32 -0400
commitb736a623bd099cdf5521ca9bd03559f3bc7fa31c (patch)
tree3a08ef493465c9d8d9c73c0763c651a399ee9160 /drivers/net
parent634d8ee4de9e41726d4f6f68f57cdd8647b3d204 (diff)
downloadlinux-b736a623bd099cdf5521ca9bd03559f3bc7fa31c.tar.bz2
udptunnels: Call handle_offloads after inserting vlan tag.
handle_offloads() calls skb_reset_inner_headers() to store the layer pointers to the encapsulated packet. However, we currently push the vlag tag (if there is one) onto the packet afterwards. This changes the MAC header for the encapsulated packet but it is not reflected in skb->inner_mac_header, which breaks GSO and drivers which attempt to use this for encapsulation offloads. Fixes: 1eaa8178 ("vxlan: Add tx-vlan offload support.") Signed-off-by: Jesse Gross <jesse@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/vxlan.c20
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index f8528a4cf54f..fceb637efd6b 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -1713,12 +1713,6 @@ static int vxlan6_xmit_skb(struct dst_entry *dst, struct sk_buff *skb,
}
}
- skb = iptunnel_handle_offloads(skb, udp_sum, type);
- if (IS_ERR(skb)) {
- err = -EINVAL;
- goto err;
- }
-
skb_scrub_packet(skb, xnet);
min_headroom = LL_RESERVED_SPACE(dst->dev) + dst->header_len
@@ -1738,6 +1732,12 @@ static int vxlan6_xmit_skb(struct dst_entry *dst, struct sk_buff *skb,
goto err;
}
+ skb = iptunnel_handle_offloads(skb, udp_sum, type);
+ if (IS_ERR(skb)) {
+ err = -EINVAL;
+ goto err;
+ }
+
vxh = (struct vxlanhdr *) __skb_push(skb, sizeof(*vxh));
vxh->vx_flags = htonl(VXLAN_HF_VNI);
vxh->vx_vni = md->vni;
@@ -1798,10 +1798,6 @@ int vxlan_xmit_skb(struct rtable *rt, struct sk_buff *skb,
}
}
- skb = iptunnel_handle_offloads(skb, udp_sum, type);
- if (IS_ERR(skb))
- return PTR_ERR(skb);
-
min_headroom = LL_RESERVED_SPACE(rt->dst.dev) + rt->dst.header_len
+ VXLAN_HLEN + sizeof(struct iphdr)
+ (skb_vlan_tag_present(skb) ? VLAN_HLEN : 0);
@@ -1817,6 +1813,10 @@ int vxlan_xmit_skb(struct rtable *rt, struct sk_buff *skb,
if (WARN_ON(!skb))
return -ENOMEM;
+ skb = iptunnel_handle_offloads(skb, udp_sum, type);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+
vxh = (struct vxlanhdr *) __skb_push(skb, sizeof(*vxh));
vxh->vx_flags = htonl(VXLAN_HF_VNI);
vxh->vx_vni = md->vni;