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authorJesse Gross <jesse@nicira.com>2015-01-29 03:32:46 +0300
committerDavid S. Miller <davem@davemloft.net>2015-01-29 10:04:15 +0300
commitb8693877ae016ac525d674d5d7a84ea0ea68ba60 (patch)
tree7ab9067c1c28bc829336a8d95736303f69d0bdea /net/openvswitch/vport-vxlan.c
parentb8f8be3f043d6dba7d6c3426e4597d2ebf5a3547 (diff)
downloadlinux-b8693877ae016ac525d674d5d7a84ea0ea68ba60.tar.xz
openvswitch: Add support for checksums on UDP tunnels.
Currently, it isn't possible to request checksums on the outer UDP header of tunnels - the TUNNEL_CSUM flag is ignored. This adds support for requesting that UDP checksums be computed on transmit and properly reported if they are present on receive. Signed-off-by: Jesse Gross <jesse@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/openvswitch/vport-vxlan.c')
-rw-r--r--net/openvswitch/vport-vxlan.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/net/openvswitch/vport-vxlan.c b/net/openvswitch/vport-vxlan.c
index 3cc983bf444a..ff07d4062d60 100644
--- a/net/openvswitch/vport-vxlan.c
+++ b/net/openvswitch/vport-vxlan.c
@@ -74,7 +74,7 @@ static void vxlan_rcv(struct vxlan_sock *vs, struct sk_buff *skb,
__be64 key;
__be16 flags;
- flags = TUNNEL_KEY;
+ flags = TUNNEL_KEY | (udp_hdr(skb)->check != 0 ? TUNNEL_CSUM : 0);
vxlan_port = vxlan_vport(vport);
if (vxlan_port->exts & VXLAN_F_GBP)
flags |= TUNNEL_VXLAN_OPT;
@@ -230,6 +230,7 @@ static int vxlan_tnl_send(struct vport *vport, struct sk_buff *skb)
__be16 src_port;
__be16 df;
int err;
+ u32 vxflags;
if (unlikely(!OVS_CB(skb)->egress_tun_info)) {
err = -EINVAL;
@@ -251,11 +252,13 @@ static int vxlan_tnl_send(struct vport *vport, struct sk_buff *skb)
src_port = udp_flow_src_port(net, skb, 0, 0, true);
md.vni = htonl(be64_to_cpu(tun_key->tun_id) << 8);
md.gbp = vxlan_ext_gbp(skb);
+ vxflags = vxlan_port->exts |
+ (tun_key->tun_flags & TUNNEL_CSUM ? VXLAN_F_UDP_CSUM : 0);
err = vxlan_xmit_skb(rt, skb, fl.saddr, tun_key->ipv4_dst,
tun_key->ipv4_tos, tun_key->ipv4_ttl, df,
src_port, dst_port,
- &md, false, vxlan_port->exts);
+ &md, false, vxflags);
if (err < 0)
ip_rt_put(rt);
return err;