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sctp: keep fragmentation point aligned to word size 

If the user supply a different fragmentation point or if there is a
network header that cause it to not be aligned, force it to be aligned.

Fragmentation point at a value that is not aligned is not optimal.  It
causes extra padding to be used and has just no pros.

v2:
 - Make use of the new WORD_TRUNC macro

Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Marcelo Ricardo Leitner 2016-03-19 12:17:43 -03:00 committed by David S. Miller
parent 3822a5ff4b
commit 659e0bcaeb
1 changed files with 1 additions and 1 deletions
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2
include/net/sctp/sctp.h
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@ -431,7 +431,7 @@ static inline int sctp_frag_point(const struct sctp_association *asoc, int pmtu)
if (asoc->user_frag)
frag = min_t(int, frag, asoc->user_frag);
frag = min_t(int, frag, SCTP_MAX_CHUNK_LEN);
frag = WORD_TRUNC(min_t(int, frag, SCTP_MAX_CHUNK_LEN));
return frag;
}