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Commit c8657fd5 authored by James Chapman's avatar James Chapman Committed by David S. Miller
Browse files

l2tp: remove unused stats from l2tp_ip socket 



The l2tp_ip socket currently maintains packet/byte stats in its
private socket structure. But these counters aren't exposed to
userspace and so serve no purpose. The counters were also
smp-unsafe. So this patch just gets rid of the stats.

While here, change a couple of internal __u32 variables to u32.

Signed-off-by: default avatarJames Chapman <jchapman@katalix.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent de3c7a18

net/l2tp/l2tp_ip.c

+4 −28
Original line number Diff line number Diff line
@@ -32,15 +32,8 @@ struct l2tp_ip_sock { 
	/* inet_sock has to be the first member of l2tp_ip_sock */

	struct inet_sock	inet;



	__u32			conn_id;

	__u32			peer_conn_id;



	__u64			tx_packets;

	__u64			tx_bytes;

	__u64			tx_errors;

	__u64			rx_packets;

	__u64			rx_bytes;

	__u64			rx_errors;

	u32			conn_id;

	u32			peer_conn_id;

};



static DEFINE_RWLOCK(l2tp_ip_lock);
@@ -298,7 +291,6 @@ out_in_use: 
static int l2tp_ip_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)

{

	struct sockaddr_l2tpip *lsa = (struct sockaddr_l2tpip *) uaddr;

	struct inet_sock *inet = inet_sk(sk);

	int rc;



	if (addr_len < sizeof(*lsa))
@@ -374,7 +366,6 @@ static int l2tp_ip_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *m 
{

	struct sk_buff *skb;

	int rc;

	struct l2tp_ip_sock *lsa = l2tp_ip_sk(sk);

	struct inet_sock *inet = inet_sk(sk);

	struct rtable *rt = NULL;

	struct flowi4 *fl4;
@@ -473,14 +464,8 @@ static int l2tp_ip_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *m 
	rcu_read_unlock();



error:

	/* Update stats */

	if (rc >= 0) {

		lsa->tx_packets++;

		lsa->tx_bytes += len;

	if (rc >= 0)

		rc = len;

	} else {

		lsa->tx_errors++;

	}



out:

	release_sock(sk);
@@ -498,7 +483,6 @@ static int l2tp_ip_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *m 
			   size_t len, int noblock, int flags, int *addr_len)

{

	struct inet_sock *inet = inet_sk(sk);

	struct l2tp_ip_sock *lsk = l2tp_ip_sk(sk);

	size_t copied = 0;

	int err = -EOPNOTSUPP;

	struct sockaddr_in *sin = (struct sockaddr_in *)msg->msg_name;
@@ -540,15 +524,7 @@ static int l2tp_ip_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *m 
done:

	skb_free_datagram(sk, skb);

out:

	if (err) {

		lsk->rx_errors++;

		return err;

	}



	lsk->rx_packets++;

	lsk->rx_bytes += copied;



	return copied;

	return err ? err : copied;

}



static struct proto l2tp_ip_prot = {