[XFRM]: Fix statistics.

o Outbound sequence number overflow error status
  is counted as XfrmOutStateSeqError.
o Additionaly, it changes inbound sequence number replay
  error name from XfrmInSeqOutOfWindow to XfrmInStateSeqError
  to apply name scheme above.
o Inbound IPv4 UDP encapsuling type mismatch error is wrongly
  mapped to XfrmInStateInvalid then this patch fiex the error
  to XfrmInStateMismatch.

Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/snmp.h b/include/linux/snmp.h
index 86d3eff..5df62ef 100644
--- a/include/linux/snmp.h
+++ b/include/linux/snmp.h
@@ -227,7 +227,7 @@
 	LINUX_MIB_XFRMINNOSTATES,		/* XfrmInNoStates */
 	LINUX_MIB_XFRMINSTATEPROTOERROR,	/* XfrmInStateProtoError */
 	LINUX_MIB_XFRMINSTATEMODEERROR,		/* XfrmInStateModeError */
-	LINUX_MIB_XFRMINSEQOUTOFWINDOW,		/* XfrmInSeqOutOfWindow */
+	LINUX_MIB_XFRMINSTATESEQERROR,		/* XfrmInStateSeqError */
 	LINUX_MIB_XFRMINSTATEEXPIRED,		/* XfrmInStateExpired */
 	LINUX_MIB_XFRMINSTATEMISMATCH,		/* XfrmInStateMismatch */
 	LINUX_MIB_XFRMINSTATEINVALID,		/* XfrmInStateInvalid */
@@ -241,6 +241,7 @@
 	LINUX_MIB_XFRMOUTNOSTATES,		/* XfrmOutNoStates */
 	LINUX_MIB_XFRMOUTSTATEPROTOERROR,	/* XfrmOutStateProtoError */
 	LINUX_MIB_XFRMOUTSTATEMODEERROR,	/* XfrmOutStateModeError */
+	LINUX_MIB_XFRMOUTSTATESEQERROR,		/* XfrmOutStateSeqError */
 	LINUX_MIB_XFRMOUTSTATEEXPIRED,		/* XfrmOutStateExpired */
 	LINUX_MIB_XFRMOUTPOLBLOCK,		/* XfrmOutPolBlock */
 	LINUX_MIB_XFRMOUTPOLDEAD,		/* XfrmOutPolDead */