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[IPSEC]: Document that policy direction is derived from the index.

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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>
This commit is contained in:
Herbert Xu
2005-10-05 12:15:12 -07:00
committed by David S. Miller
parent 140e26fcd5
commit 77d8d7a684
3 changed files with 15 additions and 5 deletions
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4
net/xfrm/xfrm_policy.c
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@@ -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)