70 lines
2.1 KiB
Diff
70 lines
2.1 KiB
Diff
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From ad96352bfdc2865237beca32fd7d50cfef3e75c7 Mon Sep 17 00:00:00 2001
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From: Wen Liang <wenliang@redhat.com>
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Date: Thu, 1 Jun 2023 10:33:46 -0400
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Subject: [PATCH] mptcp: add support for implicit flag
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2109135
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Upstream Status: iproute2-next.git commit 3a2535a4
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commit 3a2535a41854d481c1a052e267d1fe5d83f9493c
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Author: Andrea Claudi <aclaudi@redhat.com>
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Date: Tue May 16 11:48:04 2023 +0200
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mptcp: add support for implicit flag
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Kernel supports implicit flag since commit d045b9eb95a9 ("mptcp:
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introduce implicit endpoints"), included in v5.18.
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Let's add support for displaying it to iproute2.
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Before this change:
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$ ip mptcp endpoint show
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10.0.2.2 id 1 rawflags 10
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After this change:
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$ ip mptcp endpoint show
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10.0.2.2 id 1 implicit
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Signed-off-by: Andrea Claudi <aclaudi@redhat.com>
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Signed-off-by: David Ahern <dsahern@kernel.org>
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---
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ip/ipmptcp.c | 1 +
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man/man8/ip-mptcp.8 | 9 +++++++++
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2 files changed, 10 insertions(+)
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diff --git a/ip/ipmptcp.c b/ip/ipmptcp.c
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index beba7a41..9847f95b 100644
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--- a/ip/ipmptcp.c
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+++ b/ip/ipmptcp.c
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@@ -58,6 +58,7 @@ static const struct {
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{ "subflow", MPTCP_PM_ADDR_FLAG_SUBFLOW },
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{ "backup", MPTCP_PM_ADDR_FLAG_BACKUP },
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{ "fullmesh", MPTCP_PM_ADDR_FLAG_FULLMESH },
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+ { "implicit", MPTCP_PM_ADDR_FLAG_IMPLICIT },
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{ "nobackup", MPTCP_PM_ADDR_FLAG_NONE },
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{ "nofullmesh", MPTCP_PM_ADDR_FLAG_NONE }
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};
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diff --git a/man/man8/ip-mptcp.8 b/man/man8/ip-mptcp.8
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index 72762f49..b427065c 100644
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--- a/man/man8/ip-mptcp.8
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+++ b/man/man8/ip-mptcp.8
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@@ -176,6 +176,15 @@ endpoint. When the peer does announce addresses, each received ADD_ADDR
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sub-option will trigger creation of an additional subflow to generate a
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full mesh topology.
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+.TP
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+.BR implicit
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+In some scenarios, an MPTCP
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+.BR subflow
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+can use a local address mapped by a implicit endpoint created by the
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+in-kernel path manager. Once set, the implicit flag cannot be removed, but
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+other flags can be added to the endpoint. Implicit endpoints cannot be
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+created from user-space.
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+
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.sp
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.PP
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The
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--
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2.38.1
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