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mptcp: add the mib for data checksum

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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>
This commit is contained in:
Geliang Tang 2021-06-17 16:46:18 -07:00 committed by David S. Miller
parent 4e14867d5e
commit fe3ab1cbd3
3 changed files with 5 additions and 1 deletions
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1
net/mptcp/mib.c
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@ -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),

1
net/mptcp/mib.h
View File

@ -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 */

4
net/mptcp/subflow.c
View File

@ -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;
}