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netns xfrm: per-netns xfrm_state_byspi hash 

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 17:17:47 -08:00 committed by David S. Miller
parent d320bbb306
commit b754a4fd8f
2 changed files with 14 additions and 8 deletions
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1
include/net/netns/xfrm.h
View File

@ -15,6 +15,7 @@ struct netns_xfrm {
*/
struct hlist_head *state_bydst;
struct hlist_head *state_bysrc;
struct hlist_head *state_byspi;
};
#endif

21
net/xfrm/xfrm_state.c
View File

@ -44,7 +44,6 @@ u32 sysctl_xfrm_acq_expires __read_mostly = 30;
static DEFINE_SPINLOCK(xfrm_state_lock);
static struct hlist_head *xfrm_state_byspi __read_mostly;
static unsigned int xfrm_state_hmask __read_mostly;
static unsigned int xfrm_state_hashmax __read_mostly = 1 * 1024 * 1024;
static unsigned int xfrm_state_num;
@ -154,12 +153,12 @@ static void xfrm_hash_resize(struct work_struct *__unused)
odst = init_net.xfrm.state_bydst;
osrc = init_net.xfrm.state_bysrc;
ospi = xfrm_state_byspi;
ospi = init_net.xfrm.state_byspi;
ohashmask = xfrm_state_hmask;
init_net.xfrm.state_bydst = ndst;
init_net.xfrm.state_bysrc = nsrc;
xfrm_state_byspi = nspi;
init_net.xfrm.state_byspi = nspi;
xfrm_state_hmask = nhashmask;
spin_unlock_bh(&xfrm_state_lock);
@ -679,7 +678,7 @@ static struct xfrm_state *__xfrm_state_lookup(xfrm_address_t *daddr, __be32 spi,
struct xfrm_state *x;
struct hlist_node *entry;
hlist_for_each_entry(x, entry, xfrm_state_byspi+h, byspi) {
hlist_for_each_entry(x, entry, init_net.xfrm.state_byspi+h, byspi) {
if (x->props.family != family ||
x->id.spi != spi ||
x->id.proto != proto)
@ -852,7 +851,7 @@ xfrm_state_find(xfrm_address_t *daddr, xfrm_address_t *saddr,
hlist_add_head(&x->bysrc, init_net.xfrm.state_bysrc+h);
if (x->id.spi) {
h = xfrm_spi_hash(&x->id.daddr, x->id.spi, x->id.proto, family);
hlist_add_head(&x->byspi, xfrm_state_byspi+h);
hlist_add_head(&x->byspi, init_net.xfrm.state_byspi+h);
}
x->lft.hard_add_expires_seconds = sysctl_xfrm_acq_expires;
x->timer.expires = jiffies + sysctl_xfrm_acq_expires*HZ;
@ -928,7 +927,7 @@ static void __xfrm_state_insert(struct xfrm_state *x)
h = xfrm_spi_hash(&x->id.daddr, x->id.spi, x->id.proto,
x->props.family);
hlist_add_head(&x->byspi, xfrm_state_byspi+h);
hlist_add_head(&x->byspi, init_net.xfrm.state_byspi+h);
}
mod_timer(&x->timer, jiffies + HZ);
@ -1524,7 +1523,7 @@ int xfrm_alloc_spi(struct xfrm_state *x, u32 low, u32 high)
if (x->id.spi) {
spin_lock_bh(&xfrm_state_lock);
h = xfrm_spi_hash(&x->id.daddr, x->id.spi, x->id.proto, x->props.family);
hlist_add_head(&x->byspi, xfrm_state_byspi+h);
hlist_add_head(&x->byspi, init_net.xfrm.state_byspi+h);
spin_unlock_bh(&xfrm_state_lock);
err = 0;
@ -2086,12 +2085,16 @@ int __net_init xfrm_state_init(struct net *net)
net->xfrm.state_bysrc = xfrm_hash_alloc(sz);
if (!net->xfrm.state_bysrc)
goto out_bysrc;
xfrm_state_byspi = xfrm_hash_alloc(sz);
net->xfrm.state_byspi = xfrm_hash_alloc(sz);
if (!net->xfrm.state_byspi)
goto out_byspi;
xfrm_state_hmask = ((sz / sizeof(struct hlist_head)) - 1);
INIT_WORK(&xfrm_state_gc_work, xfrm_state_gc_task);
return 0;
out_byspi:
xfrm_hash_free(net->xfrm.state_bysrc, sz);
out_bysrc:
xfrm_hash_free(net->xfrm.state_bydst, sz);
out_bydst:
@ -2105,6 +2108,8 @@ void xfrm_state_fini(struct net *net)
WARN_ON(!list_empty(&net->xfrm.state_all));
sz = (xfrm_state_hmask + 1) * sizeof(struct hlist_head);
WARN_ON(!hlist_empty(net->xfrm.state_byspi));
xfrm_hash_free(net->xfrm.state_byspi, sz);
WARN_ON(!hlist_empty(net->xfrm.state_bysrc));
xfrm_hash_free(net->xfrm.state_bysrc, sz);
WARN_ON(!hlist_empty(net->xfrm.state_bydst));