vxlan: Use checksum partial with remote checksum offload

Change remote checksum handling to set checksum partial as default
behavior. Added an iflink parameter to configure not using
checksum partial (calling csum_partial to update checksum).

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 4 insertions, 1 deletions

diff --git a/include/net/vxlan.h b/include/net/vxlan.h
index 2927d6244481..eabd3a038674 100644
--- a/include/net/vxlan.h
+++ b/include/net/vxlan.h
@@ -128,13 +128,15 @@ struct vxlan_sock {
 #define VXLAN_F_REMCSUM_TX              0x200
 #define VXLAN_F_REMCSUM_RX              0x400
 #define VXLAN_F_GBP                     0x800
+#define VXLAN_F_REMCSUM_NOPARTIAL       0x1000
 
 /* Flags that are used in the receive patch. These flags must match in
  * order for a socket to be shareable
  */
 #define VXLAN_F_RCV_FLAGS               (VXLAN_F_GBP |                  \
                                          VXLAN_F_UDP_ZERO_CSUM6_RX |    \
-                                         VXLAN_F_REMCSUM_RX)
+                                         VXLAN_F_REMCSUM_RX |           \
+                                         VXLAN_F_REMCSUM_NOPARTIAL)
 
 struct vxlan_sock *vxlan_sock_add(struct net *net, __be16 port,
                                   vxlan_rcv_t *rcv, void *data,
diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index 0deee3eeddbf..dfd0bb22e554 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -374,6 +374,7 @@ enum {
         IFLA_VXLAN_REMCSUM_TX,
         IFLA_VXLAN_REMCSUM_RX,
         IFLA_VXLAN_GBP,
+        IFLA_VXLAN_REMCSUM_NOPARTIAL,
         __IFLA_VXLAN_MAX
 };
 #define IFLA_VXLAN_MAX  (__IFLA_VXLAN_MAX - 1)