net: Add net protocol offload registration infrustructure

Create a new data structure for IPv4 protocols that holds GRO/GSO
callbacks and a new array to track the protocols that register GRO/GSO.

Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 12 insertions, 0 deletions

diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 4c99c5fdba3f..3918d869d6d4 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1566,6 +1566,13 @@ static const struct net_protocol tcp_protocol = {
         .netns_ok       =       1,
 };
 
+static const struct net_offload tcp_offload = {
+        .gso_send_check =       tcp_v4_gso_send_check,
+        .gso_segment    =       tcp_tso_segment,
+        .gro_receive    =       tcp4_gro_receive,
+        .gro_complete   =       tcp4_gro_complete,
+};
+
 static const struct net_protocol udp_protocol = {
         .handler =      udp_rcv,
         .err_handler =  udp_err,
@@ -1575,6 +1582,11 @@ static const struct net_protocol udp_protocol = {
         .netns_ok =     1,
 };
 
+static const struct net_offload udp_offload = {
+        .gso_send_check = udp4_ufo_send_check,
+        .gso_segment = udp4_ufo_fragment,
+};
+
 static const struct net_protocol icmp_protocol = {
         .handler =      icmp_rcv,
         .err_handler =  ping_err,