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af_unix: Move CINQ/COUTQ code to helpers 

Currently tcp diag reports rqlen and wqlen values similar to how
the CINQ/COUTQ iotcls do. To make unix diag report these values
in the same way move the respective code into helpers.

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov 2011-12-30 00:54:11 +00:00 committed by David S. Miller
parent 257b529876
commit 885ee74d5d
2 changed files with 39 additions and 23 deletions
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3
include/net/af_unix.h
View File

@ -66,6 +66,9 @@ struct unix_sock {
#define peer_wait peer_wq.wait
long unix_inq_len(struct sock *sk);
long unix_outq_len(struct sock *sk);
#ifdef CONFIG_SYSCTL
extern int unix_sysctl_register(struct net *net);
extern void unix_sysctl_unregister(struct net *net);

59
net/unix/af_unix.c
View File

@ -2065,6 +2065,36 @@ static int unix_shutdown(struct socket *sock, int mode)
return 0;
}
long unix_inq_len(struct sock *sk)
{
struct sk_buff *skb;
long amount = 0;
if (sk->sk_state == TCP_LISTEN)
return -EINVAL;
spin_lock(&sk->sk_receive_queue.lock);
if (sk->sk_type == SOCK_STREAM ||
sk->sk_type == SOCK_SEQPACKET) {
skb_queue_walk(&sk->sk_receive_queue, skb)
amount += skb->len;
} else {
skb = skb_peek(&sk->sk_receive_queue);
if (skb)
amount = skb->len;
}
spin_unlock(&sk->sk_receive_queue.lock);
return amount;
}
EXPORT_SYMBOL_GPL(unix_inq_len);
long unix_outq_len(struct sock *sk)
{
return sk_wmem_alloc_get(sk);
}
EXPORT_SYMBOL_GPL(unix_outq_len);
static int unix_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
struct sock *sk = sock->sk;
@ -2073,33 +2103,16 @@ static int unix_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
switch (cmd) {
case SIOCOUTQ:
amount = sk_wmem_alloc_get(sk);
amount = unix_outq_len(sk);
err = put_user(amount, (int __user *)arg);
break;
case SIOCINQ:
{
struct sk_buff *skb;
if (sk->sk_state == TCP_LISTEN) {
err = -EINVAL;
break;
}
spin_lock(&sk->sk_receive_queue.lock);
if (sk->sk_type == SOCK_STREAM ||
sk->sk_type == SOCK_SEQPACKET) {
skb_queue_walk(&sk->sk_receive_queue, skb)
amount += skb->len;
} else {
skb = skb_peek(&sk->sk_receive_queue);
if (skb)
amount = skb->len;
}
spin_unlock(&sk->sk_receive_queue.lock);
amount = unix_inq_len(sk);
if (amount < 0)
err = amount;
else
err = put_user(amount, (int __user *)arg);
break;
}
break;
default:
err = -ENOIOCTLCMD;
break;