Commit fe3ab1cb authored Jun 17, 2021 by Geliang Tang Committed by David S. Miller Jun 18, 2021

mptcp: add the mib for data checksum



This patch added the mib for the data checksum, MPTCP_MIB_DATACSUMERR.

Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 4e14867d

net/mptcp/mib.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -25,6 +25,7 @@ static const struct snmp_mib mptcp_snmp_list[] = {
		SNMP_MIB_ITEM("MPJoinAckHMacFailure", MPTCP_MIB_JOINACKMAC),
		SNMP_MIB_ITEM("DSSNotMatching", MPTCP_MIB_DSSNOMATCH),
		SNMP_MIB_ITEM("InfiniteMapRx", MPTCP_MIB_INFINITEMAPRX),
		SNMP_MIB_ITEM("DataCsumErr", MPTCP_MIB_DATACSUMERR),
		SNMP_MIB_ITEM("OFOQueueTail", MPTCP_MIB_OFOQUEUETAIL),
		SNMP_MIB_ITEM("OFOQueue", MPTCP_MIB_OFOQUEUE),
		SNMP_MIB_ITEM("OFOMerge", MPTCP_MIB_OFOMERGE),

net/mptcp/mib.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -18,6 +18,7 @@ enum linux_mptcp_mib_field {
		MPTCP_MIB_JOINACKMAC, /* HMAC was wrong on ACK + MP_JOIN */
		MPTCP_MIB_DSSNOMATCH, /* Received a new mapping that did not match the previous one */
		MPTCP_MIB_INFINITEMAPRX, /* Received an infinite mapping */
		MPTCP_MIB_DATACSUMERR, /* The data checksum fail */
		MPTCP_MIB_OFOQUEUETAIL, /* Segments inserted into OoO queue tail */
		MPTCP_MIB_OFOQUEUE, /* Segments inserted into OoO queue */
		MPTCP_MIB_OFOMERGE, /* Segments merged in OoO queue */

net/mptcp/subflow.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -900,8 +900,10 @@ static enum mapping_status validate_data_csum(struct sock ssk, struct sk_buff
		header.csum = 0;

		csum = csum_partial(&header, sizeof(header), subflow->map_data_csum);
		if (unlikely(csum_fold(csum)))
		if (unlikely(csum_fold(csum))) {
		MPTCP_INC_STATS(sock_net(ssk), MPTCP_MIB_DATACSUMERR);
		return subflow->mp_join ? MAPPING_INVALID : MAPPING_DUMMY;
		}

		return MAPPING_OK;
		}