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| author | David S. Miller <davem@davemloft.net> | 2016-05-09 15:59:24 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-05-09 15:59:24 -0400 |
| commit | e800072c18f0d7b89a80fa46dceb3d080c80e09c (patch) | |
| tree | 8da6cb7944762a60ec37594720c1ad2757631c2f /net/core/flow.c | |
| parent | e8ed77dfa90dd79c5343415a4bbbfdab9787b35a (diff) | |
| parent | b507146bb6b9ac0c0197100ba3e299825a21fed3 (diff) | |
| download | linux-e800072c18f0d7b89a80fa46dceb3d080c80e09c.tar.gz linux-e800072c18f0d7b89a80fa46dceb3d080c80e09c.tar.bz2 linux-e800072c18f0d7b89a80fa46dceb3d080c80e09c.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
In netdevice.h we removed the structure in net-next that is being
changes in 'net'. In macsec.c and rtnetlink.c we have overlaps
between fixes in 'net' and the u64 attribute changes in 'net-next'.
The mlx5 conflicts have to do with vxlan support dependencies.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/flow.c')
| -rw-r--r-- | net/core/flow.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/net/core/flow.c b/net/core/flow.c index 1033725be40b..3937b1b68d5b 100644 --- a/net/core/flow.c +++ b/net/core/flow.c @@ -92,8 +92,11 @@ static void flow_cache_gc_task(struct work_struct *work) list_splice_tail_init(&xfrm->flow_cache_gc_list, &gc_list); spin_unlock_bh(&xfrm->flow_cache_gc_lock); - list_for_each_entry_safe(fce, n, &gc_list, u.gc_list) + list_for_each_entry_safe(fce, n, &gc_list, u.gc_list) { flow_entry_kill(fce, xfrm); + atomic_dec(&xfrm->flow_cache_gc_count); + WARN_ON(atomic_read(&xfrm->flow_cache_gc_count) < 0); + } } static void flow_cache_queue_garbage(struct flow_cache_percpu *fcp, @@ -101,6 +104,7 @@ static void flow_cache_queue_garbage(struct flow_cache_percpu *fcp, struct netns_xfrm *xfrm) { if (deleted) { + atomic_add(deleted, &xfrm->flow_cache_gc_count); fcp->hash_count -= deleted; spin_lock_bh(&xfrm->flow_cache_gc_lock); list_splice_tail(gc_list, &xfrm->flow_cache_gc_list); @@ -232,6 +236,13 @@ flow_cache_lookup(struct net *net, const struct flowi *key, u16 family, u8 dir, if (fcp->hash_count > fc->high_watermark) flow_cache_shrink(fc, fcp); + if (fcp->hash_count > 2 * fc->high_watermark || + atomic_read(&net->xfrm.flow_cache_gc_count) > fc->high_watermark) { + atomic_inc(&net->xfrm.flow_cache_genid); + flo = ERR_PTR(-ENOBUFS); + goto ret_object; + } + fle = kmem_cache_alloc(flow_cachep, GFP_ATOMIC); if (fle) { fle->net = net; @@ -446,6 +457,7 @@ int flow_cache_init(struct net *net) INIT_WORK(&net->xfrm.flow_cache_gc_work, flow_cache_gc_task); INIT_WORK(&net->xfrm.flow_cache_flush_work, flow_cache_flush_task); mutex_init(&net->xfrm.flow_flush_sem); + atomic_set(&net->xfrm.flow_cache_gc_count, 0); fc->hash_shift = 10; fc->low_watermark = 2 * flow_cache_hash_size(fc); |