| commit | 296f7ea75b45913d5e2067baef0812087e0b6eb9 | |
| author | Satoru Moriya <satoru.moriya@hds.com> | |
| Fri, 17 Jun 2011 11:58:39 +0000 (17 11:58 +0000) | ||
| committer | David S. Miller <davem@davemloft.net> | |
| Tue, 21 Jun 2011 23:06:10 +0000 (21 16:06 -0700) | ||
| tree | 94a5774a525ebb388306a4ae2aef90a0706031f4 | treesnapshot (tar.gz zip) |
| parent | dec17b74516bb780de75b41e7cfa0072df16bb82 | commitdiff |
udp: add tracepoints for queueing skb to rcvbuf
This patch adds a tracepoint to __udp_queue_rcv_skb to get the
return value of ip_queue_rcv_skb. It indicates why kernel drops
a packet at this point.
ip_queue_rcv_skb returns following values in the packet drop case:
rcvbuf is full : -ENOMEM
sk_filter returns error : -EINVAL, -EACCESS, -ENOMEM, etc.
__sk_mem_schedule returns error: -ENOBUF
Signed-off-by: Satoru Moriya <satoru.moriya@hds.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds a tracepoint to __udp_queue_rcv_skb to get the
return value of ip_queue_rcv_skb. It indicates why kernel drops
a packet at this point.
ip_queue_rcv_skb returns following values in the packet drop case:
rcvbuf is full : -ENOMEM
sk_filter returns error : -EINVAL, -EACCESS, -ENOMEM, etc.
__sk_mem_schedule returns error: -ENOBUF
Signed-off-by: Satoru Moriya <satoru.moriya@hds.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| include/trace/events/udp.h | [new file with mode: 0644] | blob |
| net/core/net-traces.c | diffblobblamehistory | |
| net/ipv4/udp.c | diffblobblamehistory |