I also see no UDP stats for packet drops. If Erics fix gets in then
ip_push_pending_frames() will give us an error code on drop.
Incrementing SNDBUFERRORS would require this simple patch.
UDP: Account for TX drops
UDP layer is currently not incrementing error counters when packets are
dropped. Use the SNDBUFERRORS to indicate packet drops on send.
Signed-off-by: Christoph Lameter <cl@linux-foundation.org>
---
net/ipv4/udp.c | 7 +++++++
1 file changed, 7 insertions(+)
Index: linux-2.6/net/ipv4/udp.c
===================================================================
--- linux-2.6.orig/net/ipv4/udp.c 2009-08-26 13:21:30.000000000 +0000
+++ linux-2.6/net/ipv4/udp.c 2009-08-26 13:46:35.000000000 +0000
@@ -559,6 +559,13 @@ static int udp_push_pending_frames(struc
send:
err = ip_push_pending_frames(sk);
+
+ if (err)
+ /*
+ * Packet was dropped.
+ */
+ UDP_INC_STATS_USER(sock_net(sk),
+ UDP_MIB_SNDBUFERRORS, is_udplite);
out:
up->len = 0;
up->pending = 0;
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
