xfrm: alg_key_len & alg_icv_len should be unsigned

In commit ba749ae98d5aa9d2ce9a7facde0deed454f92230 ([XFRM]: alg_key_len
should be unsigned to avoid integer divides
<http://git2.kernel.org/?p=linux/kernel/git/davem/net-2.6.git;a=commitdiff;h=ba749ae98d5aa9d2ce9a7facde0deed454f92230>)
alg_key_len field of struct xfrm_algo was converted to unsigned int to
avoid integer divides.

Then Herbert in commit 1a6509d991225ad210de54c63314fd9542922095
([IPSEC]: Add support for combined mode algorithms) added a new
structure xfrm_algo_aead, that resurrected a signed int for alg_key_len
and re-introduce integer divides.

This patch avoids these divides and saves 64 bytes of text on i386.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/linux/xfrm.h b/include/linux/xfrm.h
index 0c82c80b277f935f25e43c2a83ea348b1481153a..2ca6bae88721920215a649bc437393733452aae9 100644 (file)
--- a/include/linux/xfrm.h
+++ b/include/linux/xfrm.h
@@ -97,10 +97,10 @@ struct xfrm_algo {
 };
 
 struct xfrm_algo_aead {
-       char    alg_name[64];
-       int     alg_key_len;    /* in bits */
-       int     alg_icv_len;    /* in bits */
-       char    alg_key[0];
+       char            alg_name[64];
+       unsigned int    alg_key_len;    /* in bits */
+       unsigned int    alg_icv_len;    /* in bits */
+       char            alg_key[0];
 };
 
 struct xfrm_stats {