[NET] Generalise tcp_listen_opt

This chunks out the accept_queue and tcp_listen_opt code and moves
them to net/core/request_sock.c and include/net/request_sock.h, to
make it useful for other transport protocols, DCCP being the first one
to use it.

Next patches will rename tcp_listen_opt to accept_sock and remove the
inline tcp functions that just call a reqsk_queue_ function.

Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 4 deletions

diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index 0e6d525a8341..b3943e7562f3 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -790,10 +790,8 @@ struct sock *tcp_create_openreq_child(struct sock *sk, struct request_sock *req,
                 newtp->probes_out = 0;
                 newtp->rx_opt.num_sacks = 0;
                 newtp->urg_data = 0;
-                newtp->listen_opt = NULL;
-                newtp->accept_queue = newtp->accept_queue_tail = NULL;
-                /* Deinitialize syn_wait_lock to trap illegal accesses. */
-                memset(&newtp->syn_wait_lock, 0, sizeof(newtp->syn_wait_lock));
+                /* Deinitialize accept_queue to trap illegal accesses. */
+                memset(&newtp->accept_queue, 0, sizeof(newtp->accept_queue));
 
                 /* Back to base struct sock members. */
                 newsk->sk_err = 0;