tipc: add tipc_bearer_min_mtu to calculate min mtu

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[ Upstream commit 3ae6d66b60 ]

As different media may requires different min mtu, and even the
same media with different net family requires different min mtu,
add tipc_bearer_min_mtu() to calculate min mtu accordingly.

This API will be used to check the new mtu when doing the link
mtu negotiation in the next patch.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: 56077b56cd ("tipc: do not update mtu if msg_max is too small in mtu negotiation")
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Xin Long 2023-05-14 15:52:27 -04:00 • committed by Greg Kroah-Hartman

parent 73f53bc295

commit 735c64ea88

3 changed files with 19 additions and 2 deletions

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13

net/tipc/bearer.c

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3

net/tipc/bearer.h

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5

net/tipc/udp_media.c

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