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authorEric Dumazet <edumazet@google.com>2015-10-02 11:43:36 -0700
committerDavid S. Miller <davem@davemloft.net>2015-10-03 04:32:43 -0700
commit10cbc8f179177c1a6d5f56a46ebddc8f602ce5ac (patch)
treebf85cccd8ce732549605df96d909908d03e5932d /net/ipv4/inet_connection_sock.c
parentca6fb06518836ef9b65dc0aac02ff97704d52a05 (diff)
downloadlinux-10cbc8f179177c1a6d5f56a46ebddc8f602ce5ac.tar.gz
tcp/dccp: remove struct listen_sock
It is enough to check listener sk_state, no need for an extra
condition.

max_qlen_log can be moved into struct request_sock_queue

We can remove syn_wait_lock and the alignment it enforced.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/inet_connection_sock.c')
-rw-r--r--net/ipv4/inet_connection_sock.c14
1 files changed, 4 insertions, 10 deletions
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index 099e0ea9242a..775483283fa7 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -552,12 +552,11 @@ static void reqsk_timer_handler(unsigned long data)
 	struct sock *sk_listener = req->rsk_listener;
 	struct inet_connection_sock *icsk = inet_csk(sk_listener);
 	struct request_sock_queue *queue = &icsk->icsk_accept_queue;
-	struct listen_sock *lopt = queue->listen_opt;
 	int qlen, expire = 0, resend = 0;
 	int max_retries, thresh;
 	u8 defer_accept;
 
-	if (sk_listener->sk_state != TCP_LISTEN || !lopt)
+	if (sk_listener->sk_state != TCP_LISTEN)
 		goto drop;
 
 	max_retries = icsk->icsk_syn_retries ? : sysctl_tcp_synack_retries;
@@ -580,7 +579,7 @@ static void reqsk_timer_handler(unsigned long data)
 	 * ones are about to clog our table.
 	 */
 	qlen = reqsk_queue_len(queue);
-	if (qlen >> (lopt->max_qlen_log - 1)) {
+	if (qlen >> (queue->max_qlen_log - 1)) {
 		int young = reqsk_queue_len_young(queue) << 1;
 
 		while (thresh > 2) {
@@ -730,12 +729,10 @@ EXPORT_SYMBOL(inet_csk_prepare_forced_close);
 
 int inet_csk_listen_start(struct sock *sk, const int nr_table_entries)
 {
-	struct inet_sock *inet = inet_sk(sk);
 	struct inet_connection_sock *icsk = inet_csk(sk);
-	int rc = reqsk_queue_alloc(&icsk->icsk_accept_queue, nr_table_entries);
+	struct inet_sock *inet = inet_sk(sk);
 
-	if (rc != 0)
-		return rc;
+	reqsk_queue_alloc(&icsk->icsk_accept_queue, nr_table_entries);
 
 	sk->sk_max_ack_backlog = 0;
 	sk->sk_ack_backlog = 0;
@@ -757,7 +754,6 @@ int inet_csk_listen_start(struct sock *sk, const int nr_table_entries)
 	}
 
 	sk->sk_state = TCP_CLOSE;
-	__reqsk_queue_destroy(&icsk->icsk_accept_queue);
 	return -EADDRINUSE;
 }
 EXPORT_SYMBOL_GPL(inet_csk_listen_start);
@@ -780,8 +776,6 @@ void inet_csk_listen_stop(struct sock *sk)
 	 * To be honest, we are not able to make either
 	 * of the variants now.			--ANK
 	 */
-	reqsk_queue_destroy(queue);
-
 	while ((req = reqsk_queue_remove(queue, sk)) != NULL) {
 		struct sock *child = req->sk;