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From: Alexander Motin <mav@FreeBSD.org>
Date: Wed, 7 Jan 2009 11:44:03 +0000 (UTC)
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X-FreeBSD-CVS-Branch: RELENG_7
Subject: cvs commit: src/sys/crypto/rc4 rc4.c
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mav         2009-01-07 11:44:03 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_7)
    sys/crypto/rc4       rc4.c 
  Log:
  SVN rev 186857 on 2009-01-07 11:44:03Z by mav
  
  MFC rev. 186179:
  
  Avoid 256 integer divisions per rc4_init() call. Replace it with using
  separate index variable.
  
  It gives more then double rc4_init() performance increase on tested i386 P4.
  It also gives about 15% speedup to PPTP VPN with stateless MPPE encryption
  (by ng_mppc) which calls rc4_init() for every packet.
  
  Revision  Changes    Path
  1.5.20.1  +5 -3      src/sys/crypto/rc4/rc4.c