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authorHerbert Xu <herbert@gondor.apana.org.au>2005-10-05 23:15:12 +0400
committerDavid S. Miller <davem@davemloft.net>2005-10-05 23:15:12 +0400
commit77d8d7a6848c81084f413e1ec4982123a56e2ccb (patch)
tree37a160b0b5fcb8a079bcafec5091fd331e14d54c /net/xfrm/xfrm_policy.c
parent140e26fcd559f6988e5a9056385eecade19d9b49 (diff)
downloadlinux-77d8d7a6848c81084f413e1ec4982123a56e2ccb.tar.xz
[IPSEC]: Document that policy direction is derived from the index.
Here is a patch that adds a helper called xfrm_policy_id2dir to document the fact that the policy direction can be and is derived from the index. This is based on a patch by YOSHIFUJI Hideaki and 210313105@suda.edu.cn. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/xfrm/xfrm_policy.c')
-rw-r--r--net/xfrm/xfrm_policy.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index c6a0d34fc295..061b44cc2451 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -163,7 +163,7 @@ static void xfrm_policy_timer(unsigned long data)
if (xp->dead)
goto out;
- dir = xp->index & 7;
+ dir = xfrm_policy_id2dir(xp->index);
if (xp->lft.hard_add_expires_seconds) {
long tmo = xp->lft.hard_add_expires_seconds +
@@ -417,7 +417,7 @@ struct xfrm_policy *xfrm_policy_byid(int dir, u32 id, int delete)
struct xfrm_policy *pol, **p;
write_lock_bh(&xfrm_policy_lock);
- for (p = &xfrm_policy_list[id & 7]; (pol=*p)!=NULL; p = &pol->next) {
+ for (p = &xfrm_policy_list[dir]; (pol=*p)!=NULL; p = &pol->next) {
if (pol->index == id) {
xfrm_pol_hold(pol);
if (delete)