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netns xfrm: per-netns policy counts

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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 17:24:15 -08:00 committed by David S. Miller
parent a35f6c5de3
commit dc2caba7b3
3 changed files with 19 additions and 22 deletions
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1
include/net/netns/xfrm.h
View File

@ -37,6 +37,7 @@ struct netns_xfrm {
unsigned int policy_idx_hmask;
struct hlist_head policy_inexact[XFRM_POLICY_MAX * 2];
struct xfrm_policy_hash policy_bydst[XFRM_POLICY_MAX * 2];
unsigned int policy_count[XFRM_POLICY_MAX * 2];
};
#endif

6
include/net/xfrm.h
View File

@ -559,8 +559,6 @@ struct xfrm_mgr
extern int xfrm_register_km(struct xfrm_mgr *km);
extern int xfrm_unregister_km(struct xfrm_mgr *km);
extern unsigned int xfrm_policy_count[XFRM_POLICY_MAX*2];
/*
* This structure is used for the duration where packets are being
* transformed by IPsec. As soon as the packet leaves IPsec the
@ -999,7 +997,7 @@ static inline int __xfrm_policy_check2(struct sock *sk, int dir,
if (sk && sk->sk_policy[XFRM_POLICY_IN])
return __xfrm_policy_check(sk, ndir, skb, family);
return (!xfrm_policy_count[dir] && !skb->sp) ||
return (!init_net.xfrm.policy_count[dir] && !skb->sp) ||
(skb->dst->flags & DST_NOPOLICY) ||
__xfrm_policy_check(sk, ndir, skb, family);
}
@ -1051,7 +1049,7 @@ extern int __xfrm_route_forward(struct sk_buff *skb, unsigned short family);
static inline int xfrm_route_forward(struct sk_buff *skb, unsigned short family)
{
return !xfrm_policy_count[XFRM_POLICY_OUT] ||
return !init_net.xfrm.policy_count[XFRM_POLICY_OUT] ||
(skb->dst->flags & DST_NOXFRM) ||
__xfrm_route_forward(skb, family);
}

34
net/xfrm/xfrm_policy.c
View File

@ -46,9 +46,6 @@ EXPORT_SYMBOL(xfrm_cfg_mutex);
static DEFINE_RWLOCK(xfrm_policy_lock);
unsigned int xfrm_policy_count[XFRM_POLICY_MAX*2];
EXPORT_SYMBOL(xfrm_policy_count);
static DEFINE_RWLOCK(xfrm_policy_afinfo_lock);
static struct xfrm_policy_afinfo *xfrm_policy_afinfo[NPROTO];
@ -451,7 +448,7 @@ static void xfrm_byidx_resize(int total)
static inline int xfrm_bydst_should_resize(int dir, int *total)
{
unsigned int cnt = xfrm_policy_count[dir];
unsigned int cnt = init_net.xfrm.policy_count[dir];
unsigned int hmask = init_net.xfrm.policy_bydst[dir].hmask;
if (total)
@ -478,12 +475,12 @@ static inline int xfrm_byidx_should_resize(int total)
void xfrm_spd_getinfo(struct xfrmk_spdinfo *si)
{
read_lock_bh(&xfrm_policy_lock);
si->incnt = xfrm_policy_count[XFRM_POLICY_IN];
si->outcnt = xfrm_policy_count[XFRM_POLICY_OUT];
si->fwdcnt = xfrm_policy_count[XFRM_POLICY_FWD];
si->inscnt = xfrm_policy_count[XFRM_POLICY_IN+XFRM_POLICY_MAX];
si->outscnt = xfrm_policy_count[XFRM_POLICY_OUT+XFRM_POLICY_MAX];
si->fwdscnt = xfrm_policy_count[XFRM_POLICY_FWD+XFRM_POLICY_MAX];
si->incnt = init_net.xfrm.policy_count[XFRM_POLICY_IN];
si->outcnt = init_net.xfrm.policy_count[XFRM_POLICY_OUT];
si->fwdcnt = init_net.xfrm.policy_count[XFRM_POLICY_FWD];
si->inscnt = init_net.xfrm.policy_count[XFRM_POLICY_IN+XFRM_POLICY_MAX];
si->outscnt = init_net.xfrm.policy_count[XFRM_POLICY_OUT+XFRM_POLICY_MAX];
si->fwdscnt = init_net.xfrm.policy_count[XFRM_POLICY_FWD+XFRM_POLICY_MAX];
si->spdhcnt = init_net.xfrm.policy_idx_hmask;
si->spdhmcnt = xfrm_policy_hashmax;
read_unlock_bh(&xfrm_policy_lock);
@ -591,13 +588,13 @@ int xfrm_policy_insert(int dir, struct xfrm_policy *policy, int excl)
else
hlist_add_head(&policy->bydst, chain);
xfrm_pol_hold(policy);
xfrm_policy_count[dir]++;
init_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);
xfrm_policy_count[dir]--;
init_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(policy->index));
@ -673,7 +670,7 @@ struct xfrm_policy *xfrm_policy_bysel_ctx(u8 type, int dir,
hlist_del(&pol->bydst);
hlist_del(&pol->byidx);
list_del(&pol->walk.all);
xfrm_policy_count[dir]--;
init_net.xfrm.policy_count[dir]--;
}
ret = pol;
break;
@ -717,7 +714,7 @@ struct xfrm_policy *xfrm_policy_byid(u8 type, int dir, u32 id, int delete,
hlist_del(&pol->bydst);
hlist_del(&pol->byidx);
list_del(&pol->walk.all);
xfrm_policy_count[dir]--;
init_net.xfrm.policy_count[dir]--;
}
ret = pol;
break;
@ -845,7 +842,7 @@ int xfrm_policy_flush(u8 type, struct xfrm_audit *audit_info)
}
}
xfrm_policy_count[dir] -= killed;
init_net.xfrm.policy_count[dir] -= killed;
}
atomic_inc(&flow_cache_genid);
out:
@ -1079,7 +1076,7 @@ static void __xfrm_policy_link(struct xfrm_policy *pol, int dir)
list_add(&pol->walk.all, &init_net.xfrm.policy_all);
hlist_add_head(&pol->bydst, chain);
hlist_add_head(&pol->byidx, init_net.xfrm.policy_byidx+idx_hash(pol->index));
xfrm_policy_count[dir]++;
init_net.xfrm.policy_count[dir]++;
xfrm_pol_hold(pol);
if (xfrm_bydst_should_resize(dir, NULL))
@ -1095,7 +1092,7 @@ static struct xfrm_policy *__xfrm_policy_unlink(struct xfrm_policy *pol,
hlist_del(&pol->bydst);
hlist_del(&pol->byidx);
list_del(&pol->walk.all);
xfrm_policy_count[dir]--;
init_net.xfrm.policy_count[dir]--;
return pol;
}
@ -1574,7 +1571,7 @@ restart:
if (!policy) {
/* To accelerate a bit... */
if ((dst_orig->flags & DST_NOXFRM) ||
!xfrm_policy_count[XFRM_POLICY_OUT])
!init_net.xfrm.policy_count[XFRM_POLICY_OUT])
goto nopol;
policy = flow_cache_lookup(fl, dst_orig->ops->family,
@ -2407,6 +2404,7 @@ static int __net_init xfrm_policy_init(struct net *net)
for (dir = 0; dir < XFRM_POLICY_MAX * 2; dir++) {
struct xfrm_policy_hash *htab;
net->xfrm.policy_count[dir] = 0;
INIT_HLIST_HEAD(&net->xfrm.policy_inexact[dir]);
htab = &net->xfrm.policy_bydst[dir];