From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marcelo Ricardo Leitner Subject: [PATCH v2] sctp: keep fragmentation point aligned to word size Date: Sat, 19 Mar 2016 12:17:43 -0300 Message-ID: <1458400663-25558-1-git-send-email-marcelo.leitner@gmail.com> Cc: Eric Dumazet , Neil Horman , Vlad Yasevich , linux-sctp@vger.kernel.org To: netdev@vger.kernel.org Return-path: Received: from mx1.redhat.com ([209.132.183.28]:41127 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754118AbcCSPRu (ORCPT ); Sat, 19 Mar 2016 11:17:50 -0400 Sender: netdev-owner@vger.kernel.org List-ID: 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 --- include/net/sctp/sctp.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h index ad2136caa7d65fdc0f51e4c7ad3a526c2f39660d..65521cfdcadeee35d61f280165a387cc2164ab6d 100644 --- a/include/net/sctp/sctp.h +++ b/include/net/sctp/sctp.h @@ -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; } -- 2.5.0