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authorRadu Rendec <radu.rendec@ines.ro>2007-11-10 21:54:50 -0800
committerDavid S. Miller <davem@davemloft.net>2007-11-10 21:54:50 -0800
commitb226801676d9533d09da511eb379fe970fa1a770 (patch)
treef4ad60091e226c9c93deaa9353849b6dea1c0c0e /net/ieee80211
parent78608ba0326f1448f9a10dbb402a38192559f639 (diff)
downloadop-kernel-dev-b226801676d9533d09da511eb379fe970fa1a770.zip
op-kernel-dev-b226801676d9533d09da511eb379fe970fa1a770.tar.gz
[PKT_SCHED] CLS_U32: Use ffs() instead of C code on hash mask to get first set bit.
Computing the rank of the first set bit in the hash mask (for using later in u32_hash_fold()) was done with plain C code. Using ffs() instead makes the code more readable and improves performance (since ffs() is better optimized in assembler). Using the conditional operator on hash mask before applying ntohl() also saves one ntohl() call if mask is 0. Signed-off-by: Radu Rendec <radu.rendec@ines.ro> Signed-off-by: Jarek Poplawski <jarkao2@o2.pl> Acked-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
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