lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[IPV4]: add the UdpSndbufErrors and UdpRcvbufErrors MIBs

Browse Source 
Signed-off-by: Martin Bligh <mbligh@google.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
This commit is contained in:
Martin Bligh
2006-08-14 23:57:10 -07:00
committed by David S. Miller
parent 2aa7f36cdb
commit 81aa646cc4
3 changed files with 19 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
net/ipv4/udp.c
View File

@@ -662,6 +662,16 @@ out:
UDP_INC_STATS_USER(UDP_MIB_OUTDATAGRAMS);
return len;
}
/*
* ENOBUFS = no kernel mem, SOCK_NOSPACE = no sndbuf space. Reporting
* ENOBUFS might not be good (it's not tunable per se), but otherwise
* we don't have a good statistic (IpOutDiscards but it can be too many
* things). We could add another new stat but at least for now that
* seems like overkill.
*/
if (err == -ENOBUFS || test_bit(SOCK_NOSPACE, &sk->sk_socket->flags)) {
UDP_INC_STATS_USER(UDP_MIB_SNDBUFERRORS);
}
return err;
do_confirm:
@@ -981,6 +991,7 @@ static int udp_encap_rcv(struct sock * sk, struct sk_buff *skb)
static int udp_queue_rcv_skb(struct sock * sk, struct sk_buff *skb)
{
struct udp_sock *up = udp_sk(sk);
int rc;
/*
* Charge it to the socket, dropping if the queue is full.
@@ -1027,7 +1038,10 @@ static int udp_queue_rcv_skb(struct sock * sk, struct sk_buff *skb)
skb->ip_summed = CHECKSUM_UNNECESSARY;
}
if (sock_queue_rcv_skb(sk,skb)<0) {
if ((rc = sock_queue_rcv_skb(sk,skb)) < 0) {
/* Note that an ENOMEM error is charged twice */
if (rc == -ENOMEM)
UDP_INC_STATS_BH(UDP_MIB_RCVBUFERRORS);
UDP_INC_STATS_BH(UDP_MIB_INERRORS);
kfree_skb(skb);
return -1;