diff options
| author | Geliang Tang <geliang.tang@suse.com> | 2023-11-28 15:18:45 -0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-11-29 20:06:17 -0800 |
| commit | 6ebf6f90ab4ac09a76172a6d387e8819d3259595 (patch) | |
| tree | 417b99fb849f32bf2bc6f5149ee5898af6a617ec /include/uapi/linux/mptcp.h | |
| parent | 3d6d7549042cbadf252fa32ee1561b5bd2f402ea (diff) | |
mptcp: add mptcpi_subflows_total counter
If the initial subflow has been removed, we cannot know without checking
other counters, e.g. ss -ti <filter> | grep -c tcp-ulp-mptcp or
getsockopt(SOL_MPTCP, MPTCP_FULL_INFO, ...) (or others except MPTCP_INFO
of course) and then check mptcp_subflow_data->num_subflows to get the
total amount of subflows.
This patch adds a new counter mptcpi_subflows_total in mptcpi_flags to
store the total amount of subflows, including the initial one. A new
helper __mptcp_has_initial_subflow() is added to check whether the
initial subflow has been removed or not. With this helper, we can then
compute the total amount of subflows from mptcp_info by doing something
like:
mptcpi_subflows_total = mptcpi_subflows +
__mptcp_has_initial_subflow(msk).
Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/428
Reviewed-by: Matthieu Baerts <matttbe@kernel.org>
Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Signed-off-by: Mat Martineau <martineau@kernel.org>
Link: https://lore.kernel.org/r/20231128-send-net-next-2023107-v4-1-8d6b94150f6b@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/uapi/linux/mptcp.h')
| -rw-r--r-- | include/uapi/linux/mptcp.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/mptcp.h b/include/uapi/linux/mptcp.h index a6451561f3f8..74cfe496891e 100644 --- a/include/uapi/linux/mptcp.h +++ b/include/uapi/linux/mptcp.h @@ -57,6 +57,7 @@ struct mptcp_info { __u64 mptcpi_bytes_sent; __u64 mptcpi_bytes_received; __u64 mptcpi_bytes_acked; + __u8 mptcpi_subflows_total; }; /* MPTCP Reset reason codes, rfc8684 */ |