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authorPaolo Abeni <pabeni@redhat.com>2021-04-01 16:19:41 -0700
committerDavid S. Miller <davem@davemloft.net>2021-04-02 14:21:50 -0700
commita16195e35cd013fc10023e79640bb1612e5d4457 (patch)
treeeb0136a268f71fe9c08997ca4af53fef2db48ffc /net/mptcp/subflow.c
parentf3f409a9b7f5bb3619d648b9b4ba3df4c7723da8 (diff)
mptcp: add mib for token creation fallback
If the MPTCP protocol is unable to create a new token, the socket fallback to plain TCP, let's keep track of such events via a specific MIB. 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.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c
index 6c074d3db0ed..b96e8dc01f08 100644
--- a/net/mptcp/subflow.c
+++ b/net/mptcp/subflow.c
@@ -165,6 +165,7 @@ again:
if (mptcp_token_exists(subflow_req->token)) {
if (retries-- > 0)
goto again;
+ SUBFLOW_REQ_INC_STATS(req, MPTCP_MIB_TOKENFALLBACKINIT);
} else {
subflow_req->mp_capable = 1;
}
@@ -176,6 +177,8 @@ again:
subflow_req->mp_capable = 1;
else if (retries-- > 0)
goto again;
+ else
+ SUBFLOW_REQ_INC_STATS(req, MPTCP_MIB_TOKENFALLBACKINIT);
} else if (mp_opt.mp_join && listener->request_mptcp) {
subflow_req->ssn_offset = TCP_SKB_CB(skb)->seq;