sctp: introduce sctp_mtu_payload

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When given a MTU, this function calculates how much payload we can carry
on it. Without a MTU, it calculates the amount of header overhead we
have.

So that when we have extra overhead, like the one added for IP options
on SELinux patches, it is easier to handle it.

Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Marcelo Ricardo Leitner 2018-04-26 16:58:54 -03:00 • committed by David S. Miller

parent c4b2893dae

commit feddd6c1af

3 changed files with 31 additions and 20 deletions

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19

include/net/sctp/sctp.h

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