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A few variables linked to the Path-Managers are confusing, and it would help current and future developers, to clarify them. One of them is 'subflows', which in fact represents the number of extra subflows: all the additional subflows created after the initial one, and not the total number of subflows. While at it, add an additional name for the corresponding variable in MPTCP INFO: mptcpi_extra_subflows. Not to break the current uAPI, the new name is added as a 'define' pointing to the former name. This will then also help userspace devs. No functional changes intended. Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20250925-net-next-mptcp-c-flag-laminar-v1-5-ad126cc47c6b@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>