udp: add gso support to virtual devices

Virtual devices such as tunnels and bonding can handle large packets.
Only segment packets when reaching a physical or loopback device.

Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 1 deletions

diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h
index 35b79f47a13d..fe2f3b30960e 100644
--- a/include/linux/netdev_features.h
+++ b/include/linux/netdev_features.h
@@ -55,8 +55,9 @@ enum {
         NETIF_F_GSO_SCTP_BIT,           /* ... SCTP fragmentation */
         NETIF_F_GSO_ESP_BIT,            /* ... ESP with TSO */
         NETIF_F_GSO_UDP_BIT,            /* ... UFO, deprecated except tuntap */
+        NETIF_F_GSO_UDP_L4_BIT,         /* ... UDP payload GSO (not UFO) */
         /**/NETIF_F_GSO_LAST =          /* last bit, see GSO_MASK */
-                NETIF_F_GSO_UDP_BIT,
+                NETIF_F_GSO_UDP_L4_BIT,
 
         NETIF_F_FCOE_CRC_BIT,           /* FCoE CRC32 */
         NETIF_F_SCTP_CRC_BIT,           /* SCTP checksum offload */
@@ -147,6 +148,7 @@ enum {
 #define NETIF_F_HW_ESP_TX_CSUM  __NETIF_F(HW_ESP_TX_CSUM)
 #define NETIF_F_RX_UDP_TUNNEL_PORT  __NETIF_F(RX_UDP_TUNNEL_PORT)
 #define NETIF_F_HW_TLS_RECORD   __NETIF_F(HW_TLS_RECORD)
+#define NETIF_F_GSO_UDP_L4      __NETIF_F(GSO_UDP_L4)
 
 #define for_each_netdev_feature(mask_addr, bit) \
         for_each_set_bit(bit, (unsigned long *)mask_addr, NETDEV_FEATURE_COUNT)
@@ -216,6 +218,7 @@ enum {
                                  NETIF_F_GSO_GRE_CSUM |                 \
                                  NETIF_F_GSO_IPXIP4 |                   \
                                  NETIF_F_GSO_IPXIP6 |                   \
+                                 NETIF_F_GSO_UDP_L4 |                   \
                                  NETIF_F_GSO_UDP_TUNNEL |               \
                                  NETIF_F_GSO_UDP_TUNNEL_CSUM)