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tcp: rename struct tcp_request_sock listener

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The listener field in struct tcp_request_sock is a pointer
back to the listener. We now have req->rsk_listener, so TCP
only needs one boolean and not a full pointer.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2015-03-17 18:32:29 -07:00 • committed by David S. Miller
parent 4e9a578e5b
commit 9439ce00f2
7 changed files with 15 additions and 25 deletions
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18
net/core/request_sock.c
View file

@ -153,24 +153,22 @@ void reqsk_queue_destroy(struct request_sock_queue *queue)
* case might also exist in tcp_v4_hnd_req() that will trigger this locking
* order.
*
* When a TFO req is created, it needs to sock_hold its listener to prevent
* the latter data structure from going away.
*
* This function also sets "treq->listener" to NULL and unreference listener
* socket. treq->listener is used by the listener so it is protected by the
* This function also sets "treq->tfo_listener" to false.
* treq->tfo_listener is used by the listener so it is protected by the
* fastopenq->lock in this function.
*/
void reqsk_fastopen_remove(struct sock *sk, struct request_sock *req,
bool reset)
{
struct sock *lsk = tcp_rsk(req)->listener;
struct fastopen_queue *fastopenq =
inet_csk(lsk)->icsk_accept_queue.fastopenq;
struct sock *lsk = req->rsk_listener;
struct fastopen_queue *fastopenq;
fastopenq = inet_csk(lsk)->icsk_accept_queue.fastopenq;
tcp_sk(sk)->fastopen_rsk = NULL;
spin_lock_bh(&fastopenq->lock);
fastopenq->qlen--;
tcp_rsk(req)->listener = NULL;
tcp_rsk(req)->tfo_listener = false;
if (req->sk) /* the child socket hasn't been accepted yet */
goto out;
@ -179,7 +177,6 @@ void reqsk_fastopen_remove(struct sock *sk, struct request_sock *req,
* special RST handling below.
*/
spin_unlock_bh(&fastopenq->lock);
sock_put(lsk);
reqsk_put(req);
return;
}
@ -201,5 +198,4 @@ void reqsk_fastopen_remove(struct sock *sk, struct request_sock *req,
fastopenq->qlen++;
out:
spin_unlock_bh(&fastopenq->lock);
sock_put(lsk);
}