From 1c0953997567b22e32fdf85d3b4bc0f2461fd161 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 24 Aug 2006 03:30:28 -0700 Subject: [PATCH] [XFRM]: Purge dst references to deleted SAs passively. Just let GC and other normal mechanisms take care of getting rid of DST cache references to deleted xfrm_state objects instead of walking all the policy bundles. Signed-off-by: David S. Miller --- include/net/xfrm.h | 1 - net/xfrm/xfrm_policy.c | 2 +- net/xfrm/xfrm_state.c | 17 ----------------- 3 files changed, 1 insertion(+), 19 deletions(-) diff --git a/include/net/xfrm.h b/include/net/xfrm.h index a620a43c9ee..c7870b6eae0 100644 --- a/include/net/xfrm.h +++ b/include/net/xfrm.h @@ -995,7 +995,6 @@ struct xfrm_state * xfrm_find_acq(u8 mode, u32 reqid, u8 proto, int create, unsigned short family); extern void xfrm_policy_flush(u8 type); extern int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol); -extern int xfrm_flush_bundles(void); extern int xfrm_bundle_ok(struct xfrm_dst *xdst, struct flowi *fl, int family, int strict); extern void xfrm_init_pmtu(struct dst_entry *dst); diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c index cfa5c692f2e..1bcaae4adf3 100644 --- a/net/xfrm/xfrm_policy.c +++ b/net/xfrm/xfrm_policy.c @@ -1472,7 +1472,7 @@ static void __xfrm_garbage_collect(void) xfrm_prune_bundles(unused_bundle); } -int xfrm_flush_bundles(void) +static int xfrm_flush_bundles(void) { xfrm_prune_bundles(stale_bundle); return 0; diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c index 77ef796c9d0..9ff00b7d6ad 100644 --- a/net/xfrm/xfrm_state.c +++ b/net/xfrm/xfrm_state.c @@ -256,8 +256,6 @@ static struct work_struct xfrm_state_gc_work; static HLIST_HEAD(xfrm_state_gc_list); static DEFINE_SPINLOCK(xfrm_state_gc_lock); -static int xfrm_state_gc_flush_bundles; - int __xfrm_state_delete(struct xfrm_state *x); static struct xfrm_state_afinfo *xfrm_state_get_afinfo(unsigned short family); @@ -293,11 +291,6 @@ static void xfrm_state_gc_task(void *data) struct hlist_node *entry, *tmp; struct hlist_head gc_list; - if (xfrm_state_gc_flush_bundles) { - xfrm_state_gc_flush_bundles = 0; - xfrm_flush_bundles(); - } - spin_lock_bh(&xfrm_state_gc_lock); gc_list.first = xfrm_state_gc_list.first; INIT_HLIST_HEAD(&xfrm_state_gc_list); @@ -454,16 +447,6 @@ int __xfrm_state_delete(struct xfrm_state *x) if (del_timer(&x->rtimer)) __xfrm_state_put(x); - /* The number two in this test is the reference - * mentioned in the comment below plus the reference - * our caller holds. A larger value means that - * there are DSTs attached to this xfrm_state. - */ - if (atomic_read(&x->refcnt) > 2) { - xfrm_state_gc_flush_bundles = 1; - schedule_work(&xfrm_state_gc_work); - } - /* All xfrm_state objects are created by xfrm_state_alloc. * The xfrm_state_alloc call gives a reference, and that * is what we are dropping here.