Bump a counter for counter when snd_wnd is shared among subflow,
for observability's sake.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
SNMP_MIB_ITEM("RcvPruned", MPTCP_MIB_RCVPRUNED),
SNMP_MIB_ITEM("SubflowStale", MPTCP_MIB_SUBFLOWSTALE),
SNMP_MIB_ITEM("SubflowRecover", MPTCP_MIB_SUBFLOWRECOVER),
+ SNMP_MIB_ITEM("SndWndShared", MPTCP_MIB_SNDWNDSHARED),
SNMP_MIB_SENTINEL
};
MPTCP_MIB_RCVPRUNED, /* Incoming packet dropped due to memory limit */
MPTCP_MIB_SUBFLOWSTALE, /* Subflows entered 'stale' status */
MPTCP_MIB_SUBFLOWRECOVER, /* Subflows returned to active status after being stale */
+ MPTCP_MIB_SNDWNDSHARED, /* Subflow snd wnd is overridden by msk's one */
__MPTCP_MIB_MAX
};
mptcp_snd_wnd = window_end - data_seq;
avail_size = min_t(unsigned int, mptcp_snd_wnd, avail_size);
- if (unlikely(tcp_sk(ssk)->snd_wnd < mptcp_snd_wnd))
+ if (unlikely(tcp_sk(ssk)->snd_wnd < mptcp_snd_wnd)) {
tcp_sk(ssk)->snd_wnd = min_t(u64, U32_MAX, mptcp_snd_wnd);
+ MPTCP_INC_STATS(sock_net(ssk), MPTCP_MIB_SNDWNDSHARED);
+ }
return avail_size;
}