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netns xfrm: policy insertion in netns 

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexey Dobriyan 2008-11-25 17:33:06 -08:00 committed by David S. Miller
parent e92303f872
commit 1121994c80
1 changed files with 24 additions and 22 deletions
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46
net/xfrm/xfrm_policy.c
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@ -326,22 +326,22 @@ static inline unsigned int idx_hash(struct net *net, u32 index)
return __idx_hash(index, net->xfrm.policy_idx_hmask);
}
static struct hlist_head *policy_hash_bysel(struct xfrm_selector *sel, unsigned short family, int dir)
static struct hlist_head *policy_hash_bysel(struct net *net, struct xfrm_selector *sel, unsigned short family, int dir)
{
unsigned int hmask = init_net.xfrm.policy_bydst[dir].hmask;
unsigned int hmask = net->xfrm.policy_bydst[dir].hmask;
unsigned int hash = __sel_hash(sel, family, hmask);
return (hash == hmask + 1 ?
&init_net.xfrm.policy_inexact[dir] :
init_net.xfrm.policy_bydst[dir].table + hash);
&net->xfrm.policy_inexact[dir] :
net->xfrm.policy_bydst[dir].table + hash);
}
static struct hlist_head *policy_hash_direct(xfrm_address_t *daddr, xfrm_address_t *saddr, unsigned short family, int dir)
static struct hlist_head *policy_hash_direct(struct net *net, xfrm_address_t *daddr, xfrm_address_t *saddr, unsigned short family, int dir)
{
unsigned int hmask = init_net.xfrm.policy_bydst[dir].hmask;
unsigned int hmask = net->xfrm.policy_bydst[dir].hmask;
unsigned int hash = __addr_hash(daddr, saddr, family, hmask);
return init_net.xfrm.policy_bydst[dir].table + hash;
return net->xfrm.policy_bydst[dir].table + hash;
}
static void xfrm_dst_hash_transfer(struct hlist_head *list,
@ -508,7 +508,7 @@ static void xfrm_hash_resize(struct work_struct *work)
/* Generate new index... KAME seems to generate them ordered by cost
* of an absolute inpredictability of ordering of rules. This will not pass. */
static u32 xfrm_gen_index(int dir)
static u32 xfrm_gen_index(struct net *net, int dir)
{
static u32 idx_generator;
@ -523,7 +523,7 @@ static u32 xfrm_gen_index(int dir)
idx_generator += 8;
if (idx == 0)
idx = 8;
list = init_net.xfrm.policy_byidx + idx_hash(&init_net, idx);
list = net->xfrm.policy_byidx + idx_hash(net, idx);
found = 0;
hlist_for_each_entry(p, entry, list, byidx) {
if (p->index == idx) {
@ -553,6 +553,7 @@ static inline int selector_cmp(struct xfrm_selector *s1, struct xfrm_selector *s
int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl)
{
struct net *net = xp_net(policy);
struct xfrm_policy *pol;
struct xfrm_policy *delpol;
struct hlist_head *chain;
@ -560,7 +561,7 @@ int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl)
struct dst_entry *gc_list;
write_lock_bh(&xfrm_policy_lock);
chain = policy_hash_bysel(&policy->selector, policy->family, dir);
chain = policy_hash_bysel(net, &policy->selector, policy->family, dir);
delpol = NULL;
newpos = NULL;
hlist_for_each_entry(pol, entry, chain, bydst) {
@ -587,27 +588,27 @@ int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl)
else
hlist_add_head(&policy->bydst, chain);
xfrm_pol_hold(policy);
init_net.xfrm.policy_count[dir]++;
net->xfrm.policy_count[dir]++;
atomic_inc(&flow_cache_genid);
if (delpol) {
hlist_del(&delpol->bydst);
hlist_del(&delpol->byidx);
list_del(&delpol->walk.all);
init_net.xfrm.policy_count[dir]--;
net->xfrm.policy_count[dir]--;
}
policy->index = delpol ? delpol->index : xfrm_gen_index(dir);
hlist_add_head(&policy->byidx, init_net.xfrm.policy_byidx+idx_hash(&init_net, policy->index));
policy->index = delpol ? delpol->index : xfrm_gen_index(net, dir);
hlist_add_head(&policy->byidx, net->xfrm.policy_byidx+idx_hash(net, policy->index));
policy->curlft.add_time = get_seconds();
policy->curlft.use_time = 0;
if (!mod_timer(&policy->timer, jiffies + HZ))
xfrm_pol_hold(policy);
list_add(&policy->walk.all, &init_net.xfrm.policy_all);
list_add(&policy->walk.all, &net->xfrm.policy_all);
write_unlock_bh(&xfrm_policy_lock);
if (delpol)
xfrm_policy_kill(delpol);
else if (xfrm_bydst_should_resize(&init_net, dir, NULL))
schedule_work(&init_net.xfrm.policy_hash_work);
else if (xfrm_bydst_should_resize(net, dir, NULL))
schedule_work(&net->xfrm.policy_hash_work);
read_lock_bh(&xfrm_policy_lock);
gc_list = NULL;
@ -652,7 +653,7 @@ struct xfrm_policy *xfrm_policy_bysel_ctx(u8 type, int dir,
*err = 0;
write_lock_bh(&xfrm_policy_lock);
chain = policy_hash_bysel(sel, sel->family, dir);
chain = policy_hash_bysel(&init_net, sel, sel->family, dir);
ret = NULL;
hlist_for_each_entry(pol, entry, chain, bydst) {
if (pol->type == type &&
@ -955,7 +956,7 @@ static struct xfrm_policy *xfrm_policy_lookup_bytype(u8 type, struct flowi *fl,
return NULL;
read_lock_bh(&xfrm_policy_lock);
chain = policy_hash_direct(daddr, saddr, family, dir);
chain = policy_hash_direct(&init_net, daddr, saddr, family, dir);
ret = NULL;
hlist_for_each_entry(pol, entry, chain, bydst) {
err = xfrm_policy_match(pol, fl, type, family, dir);
@ -1070,7 +1071,7 @@ static struct xfrm_policy *xfrm_sk_policy_lookup(struct sock *sk, int dir, struc
static void __xfrm_policy_link(struct xfrm_policy *pol, int dir)
{
struct net *net = xp_net(pol);
struct hlist_head *chain = policy_hash_bysel(&pol->selector,
struct hlist_head *chain = policy_hash_bysel(net, &pol->selector,
pol->family, dir);
list_add(&pol->walk.all, &net->xfrm.policy_all);
@ -1116,6 +1117,7 @@ EXPORT_SYMBOL(xfrm_policy_delete);
int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol)
{
struct net *net = xp_net(pol);
struct xfrm_policy *old_pol;
#ifdef CONFIG_XFRM_SUB_POLICY
@ -1128,7 +1130,7 @@ int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol)
sk->sk_policy[dir] = pol;
if (pol) {
pol->curlft.add_time = get_seconds();
pol->index = xfrm_gen_index(XFRM_POLICY_MAX+dir);
pol->index = xfrm_gen_index(net, XFRM_POLICY_MAX+dir);
__xfrm_policy_link(pol, XFRM_POLICY_MAX+dir);
}
if (old_pol)
@ -2595,7 +2597,7 @@ static struct xfrm_policy * xfrm_migrate_policy_find(struct xfrm_selector *sel,
u32 priority = ~0U;
read_lock_bh(&xfrm_policy_lock);
chain = policy_hash_direct(&sel->daddr, &sel->saddr, sel->family, dir);
chain = policy_hash_direct(&init_net, &sel->daddr, &sel->saddr, sel->family, dir);
hlist_for_each_entry(pol, entry, chain, bydst) {
if (xfrm_migrate_selector_match(sel, &pol->selector) &&
pol->type == type) {