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openvswitch: Add support for checksums on UDP tunnels.

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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>
This commit is contained in:
Jesse Gross
2015-01-28 16:32:46 -08:00
committed by David S. Miller
parent b8f8be3f04
commit b8693877ae
4 changed files with 10 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
net/openvswitch/vport-geneve.c
View File

@@ -212,7 +212,7 @@ static int geneve_tnl_send(struct vport *vport, struct sk_buff *skb)
tun_key->ipv4_dst, tun_key->ipv4_tos,
tun_key->ipv4_ttl, df, sport, dport,
tun_key->tun_flags, vni, opts_len, opts,
false);
!!(tun_key->tun_flags & TUNNEL_CSUM), false);
if (err < 0)
ip_rt_put(rt);
return err;

7
net/openvswitch/vport-vxlan.c
View File

@@ -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;