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authorEric Dumazet <eric.dumazet@gmail.com>2010-06-02 08:05:27 -0400
committerDavid S. Miller <davem@davemloft.net>2010-06-03 06:18:19 -0400
commitb5f7e7554753e2cc3ef3bef0271fdb32027df2ba (patch)
treee7908b1ccf1cfef6bdeb7cac4c83f6d2ad2be54e /include/linux/snmp.h
parent8cbccbe76168a0c627d2274e4a322116804db30f (diff)
ipv4: add LINUX_MIB_IPRPFILTER snmp counter
Christoph Lameter mentioned that packets could be dropped in input path because of rp_filter settings, without any SNMP counter being incremented. System administrator can have a hard time to track the problem. This patch introduces a new counter, LINUX_MIB_IPRPFILTER, incremented each time we drop a packet because Reverse Path Filter triggers. (We receive an IPv4 datagram on a given interface, and find the route to send an answer would use another interface) netstat -s | grep IPReversePathFilter IPReversePathFilter: 21714 Reported-by: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/snmp.h')
-rw-r--r--include/linux/snmp.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/snmp.h b/include/linux/snmp.h
index 52797714ade7..ebb0c80ffd6e 100644
--- a/include/linux/snmp.h
+++ b/include/linux/snmp.h
@@ -229,6 +229,7 @@ enum
229 LINUX_MIB_TCPBACKLOGDROP, 229 LINUX_MIB_TCPBACKLOGDROP,
230 LINUX_MIB_TCPMINTTLDROP, /* RFC 5082 */ 230 LINUX_MIB_TCPMINTTLDROP, /* RFC 5082 */
231 LINUX_MIB_TCPDEFERACCEPTDROP, 231 LINUX_MIB_TCPDEFERACCEPTDROP,
232 LINUX_MIB_IPRPFILTER, /* IP Reverse Path Filter (rp_filter) */
232 __LINUX_MIB_MAX 233 __LINUX_MIB_MAX
233}; 234};
234 235