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authorPaolo Abeni <pabeni@redhat.com>2021-06-22 01:54:37 +0300
committerDavid S. Miller <davem@davemloft.net>2021-06-22 19:57:45 +0300
commit06285da96a1cdbad265a212f6729e19a515127a2 (patch)
tree41d3b5db8693379afc3c12c95d3721807ed34620 /net/mptcp/subflow.c
parent8cfc47fc2eb0fd2d6eaa9e4b23b4bf6ef1bfaeef (diff)
downloadlinux-06285da96a1cdbad265a212f6729e19a515127a2.tar.xz
mptcp: add MIB counter for invalid mapping
Account this exceptional events for better introspection. Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/mptcp/subflow.c')
-rw-r--r--net/mptcp/subflow.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c
index 8976ff586b87..585951e7e52f 100644
--- a/net/mptcp/subflow.c
+++ b/net/mptcp/subflow.c
@@ -1046,8 +1046,10 @@ validate_seq:
/* we revalidate valid mapping on new skb, because we must ensure
* the current skb is completely covered by the available mapping
*/
- if (!validate_mapping(ssk, skb))
+ if (!validate_mapping(ssk, skb)) {
+ MPTCP_INC_STATS(sock_net(ssk), MPTCP_MIB_DSSTCPMISMATCH);
return MAPPING_INVALID;
+ }
skb_ext_del(skb, SKB_EXT_MPTCP);