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unix_diag: Receive queue lenght NLA

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Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov
2011-12-15 02:46:31 +00:00
committed by David S. Miller
parent 2aac7a2cb0
commit cbf391958a
2 changed files with 15 additions and 0 deletions
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2
include/linux/unix_diag.h
View File

@@ -15,6 +15,7 @@ struct unix_diag_req {
#define UDIAG_SHOW_VFS 0x00000002 /* show VFS inode info */ #define UDIAG_SHOW_VFS 0x00000002 /* show VFS inode info */
#define UDIAG_SHOW_PEER 0x00000004 /* show peer socket info */ #define UDIAG_SHOW_PEER 0x00000004 /* show peer socket info */
#define UDIAG_SHOW_ICONS 0x00000008 /* show pending connections */ #define UDIAG_SHOW_ICONS 0x00000008 /* show pending connections */
#define UDIAG_SHOW_RQLEN 0x00000010 /* show skb receive queue len */
struct unix_diag_msg { struct unix_diag_msg {
__u8 udiag_family; __u8 udiag_family;
@@ -31,6 +32,7 @@ enum {
UNIX_DIAG_VFS, UNIX_DIAG_VFS,
UNIX_DIAG_PEER, UNIX_DIAG_PEER,
UNIX_DIAG_ICONS, UNIX_DIAG_ICONS,
UNIX_DIAG_RQLEN,
UNIX_DIAG_MAX, UNIX_DIAG_MAX,
}; };

13
net/unix/diag.c
View File

@@ -98,6 +98,15 @@ rtattr_failure:
return -EMSGSIZE; return -EMSGSIZE;
} }
static int sk_diag_show_rqlen(struct sock *sk, struct sk_buff *nlskb)
{
RTA_PUT_U32(nlskb, UNIX_DIAG_RQLEN, sk->sk_receive_queue.qlen);
return 0;
rtattr_failure:
return -EMSGSIZE;
}
static int sk_diag_fill(struct sock *sk, struct sk_buff *skb, struct unix_diag_req *req, static int sk_diag_fill(struct sock *sk, struct sk_buff *skb, struct unix_diag_req *req,
u32 pid, u32 seq, u32 flags, int sk_ino) u32 pid, u32 seq, u32 flags, int sk_ino)
{ {
@@ -132,6 +141,10 @@ static int sk_diag_fill(struct sock *sk, struct sk_buff *skb, struct unix_diag_r
sk_diag_dump_icons(sk, skb)) sk_diag_dump_icons(sk, skb))
goto nlmsg_failure; goto nlmsg_failure;
if ((req->udiag_show & UDIAG_SHOW_RQLEN) &&
sk_diag_show_rqlen(sk, skb))
goto nlmsg_failure;
nlh->nlmsg_len = skb_tail_pointer(skb) - b; nlh->nlmsg_len = skb_tail_pointer(skb) - b;
return skb->len; return skb->len;