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| author |   Florian Westphal <fw@strlen.de> | 2014-07-24 16:50:31 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2014-07-27 22:34:35 -0700 |
| commit | 86e93e470cadedda9181a2bd9aee1d9d2e5e9c0f (patch) | |
| tree | adf79021d31261d4ad11c0cbc72ff33cf1e83902 /net/ipv4/inet_fragment.c | |
| parent | inet: frag: remove hash size assumptions from callers (diff) | |
| download | linux-dev-86e93e470cadedda9181a2bd9aee1d9d2e5e9c0f.tar.xz linux-dev-86e93e470cadedda9181a2bd9aee1d9d2e5e9c0f.zip | |
inet: frag: move evictor calls into frag_find function
First step to move eviction handling into a work queue.
We lose two spots that accounted evicted fragments in MIB counters.
Accounting will be restored since the upcoming work-queue evictor
invokes the frag queue timer callbacks instead.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/inet_fragment.c')
| -rw-r--r-- | net/ipv4/inet_fragment.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c index 930d23870811..535636017534 100644 --- a/net/ipv4/inet_fragment.c +++ b/net/ipv4/inet_fragment.c @@ -46,6 +46,8 @@ const u8 ip_frag_ecn_table[16] = { }; EXPORT_SYMBOL(ip_frag_ecn_table); +static int inet_frag_evictor(struct netns_frags *nf, struct inet_frags *f, bool force); + static unsigned int inet_frag_hashfn(const struct inet_frags *f, const struct inet_frag_queue *q) { @@ -203,16 +205,11 @@ void inet_frag_destroy(struct inet_frag_queue *q, struct inet_frags *f, } EXPORT_SYMBOL(inet_frag_destroy); -int inet_frag_evictor(struct netns_frags *nf, struct inet_frags *f, bool force) +static int inet_frag_evictor(struct netns_frags *nf, struct inet_frags *f, bool force) { struct inet_frag_queue *q; int work, evicted = 0; - if (!force) { - if (frag_mem_limit(nf) <= nf->high_thresh) - return 0; - } - work = frag_mem_limit(nf) - nf->low_thresh; while (work > 0 || force) { spin_lock(&nf->lru_lock); @@ -242,7 +239,6 @@ int inet_frag_evictor(struct netns_frags *nf, struct inet_frags *f, bool force) return evicted; } -EXPORT_SYMBOL(inet_frag_evictor); static struct inet_frag_queue *inet_frag_intern(struct netns_frags *nf, struct inet_frag_queue *qp_in, struct inet_frags *f, @@ -296,6 +292,9 @@ static struct inet_frag_queue *inet_frag_alloc(struct netns_frags *nf, { struct inet_frag_queue *q; + if (frag_mem_limit(nf) > nf->high_thresh) + return NULL; + q = kzalloc(f->qsize, GFP_ATOMIC); if (q == NULL) return NULL; @@ -332,6 +331,9 @@ struct inet_frag_queue *inet_frag_find(struct netns_frags *nf, struct inet_frag_queue *q; int depth = 0; + if (frag_mem_limit(nf) > nf->high_thresh) + inet_frag_evictor(nf, f, false); + hash &= (INETFRAGS_HASHSZ - 1); hb = &f->hash[hash]; |