net: tcp: move GRO/GSO functions to tcp_offload

Would be good to make things explicit and move those functions to
a new file called tcp_offload.c, thus make this similar to tcpv6_offload.c.
While moving all related functions into tcp_offload.c, we can also
make some of them static, since they are only used there. Also, add
an explicit registration function.

Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 11 deletions

diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 9c090c7daea1..7b514290efc6 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1559,15 +1559,6 @@ static const struct net_protocol tcp_protocol = {
         .netns_ok       =       1,
 };
 
-static const struct net_offload tcp_offload = {
-        .callbacks = {
-                .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,
@@ -1683,8 +1674,8 @@ static int __init ipv4_offload_init(void)
          */
         if (inet_add_offload(&udp_offload, IPPROTO_UDP) < 0)
                 pr_crit("%s: Cannot add UDP protocol offload\n", __func__);
-        if (inet_add_offload(&tcp_offload, IPPROTO_TCP) < 0)
-                pr_crit("%s: Cannot add TCP protocol offlaod\n", __func__);
+        if (tcpv4_offload_init() < 0)
+                pr_crit("%s: Cannot add TCP protocol offload\n", __func__);
 
         dev_add_offload(&ip_packet_offload);
         return 0;