[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>
diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
index f03efe5..d97d191 100644
--- a/net/ipv4/tcp_timer.c
+++ b/net/ipv4/tcp_timer.c
@@ -464,7 +464,7 @@
static void tcp_synack_timer(struct sock *sk)
{
struct tcp_sock *tp = tcp_sk(sk);
- struct tcp_listen_opt *lopt = tp->listen_opt;
+ struct tcp_listen_opt *lopt = tp->accept_queue.listen_opt;
int max_retries = tp->syn_retries ? : sysctl_tcp_synack_retries;
int thresh = max_retries;
unsigned long now = jiffies;
@@ -527,12 +527,8 @@
}
/* Drop this request */
- write_lock(&tp->syn_wait_lock);
- *reqp = req->dl_next;
- write_unlock(&tp->syn_wait_lock);
- lopt->qlen--;
- if (req->retrans == 0)
- lopt->qlen_young--;
+ tcp_synq_unlink(tp, req, reqp);
+ reqsk_queue_removed(&tp->accept_queue, req);
reqsk_free(req);
continue;
}