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xfrm: SP lookups with mark 

Allow mark to be used when doing SP lookup

Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jamal Hadi Salim 2010-02-22 11:32:58 +00:00 committed by David S. Miller
parent 8ca2e93b55
commit 34f8d8846f
1 changed files with 11 additions and 1 deletions
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12
net/xfrm/xfrm_policy.c
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@ -556,6 +556,7 @@ int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl)
struct hlist_head *chain;
struct hlist_node *entry, *newpos;
struct dst_entry *gc_list;
u32 mark = policy->mark.v & policy->mark.m;
write_lock_bh(&xfrm_policy_lock);
chain = policy_hash_bysel(net, &policy->selector, policy->family, dir);
@ -564,6 +565,7 @@ int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl)
hlist_for_each_entry(pol, entry, chain, bydst) {
if (pol->type == policy->type &&
!selector_cmp(&pol->selector, &policy->selector) &&
(mark & pol->mark.m) == pol->mark.v &&
xfrm_sec_ctx_match(pol->security, policy->security) &&
!WARN_ON(delpol)) {
if (excl) {
@ -650,6 +652,7 @@ struct xfrm_policy *xfrm_policy_bysel_ctx(struct net *net, u32 mark, u8 type,
ret = NULL;
hlist_for_each_entry(pol, entry, chain, bydst) {
if (pol->type == type &&
(mark & pol->mark.m) == pol->mark.v &&
!selector_cmp(sel, &pol->selector) &&
xfrm_sec_ctx_match(ctx, pol->security)) {
xfrm_pol_hold(pol);
@ -692,7 +695,8 @@ struct xfrm_policy *xfrm_policy_byid(struct net *net, u32 mark, u8 type,
chain = net->xfrm.policy_byidx + idx_hash(net, id);
ret = NULL;
hlist_for_each_entry(pol, entry, chain, byidx) {
if (pol->type == type && pol->index == id) {
if (pol->type == type && pol->index == id &&
(mark & pol->mark.m) == pol->mark.v) {
xfrm_pol_hold(pol);
if (delete) {
*err = security_xfrm_policy_delete(
@ -916,6 +920,7 @@ static int xfrm_policy_match(struct xfrm_policy *pol, struct flowi *fl,
int match, ret = -ESRCH;
if (pol->family != family ||
(fl->mark & pol->mark.m) != pol->mark.v ||
pol->type != type)
return ret;
@ -1040,6 +1045,10 @@ static struct xfrm_policy *xfrm_sk_policy_lookup(struct sock *sk, int dir, struc
int err = 0;
if (match) {
if ((sk->sk_mark & pol->mark.m) != pol->mark.v) {
pol = NULL;
goto out;
}
err = security_xfrm_policy_lookup(pol->security,
fl->secid,
policy_to_flow_dir(dir));
@ -1052,6 +1061,7 @@ static struct xfrm_policy *xfrm_sk_policy_lookup(struct sock *sk, int dir, struc
} else
pol = NULL;
}
out:
read_unlock_bh(&xfrm_policy_lock);
return pol;
}