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authorPavel Emelyanov <xemul@openvz.org>2007-10-17 19:47:21 -0700
committerDavid S. Miller <davem@davemloft.net>2007-10-17 19:47:21 -0700
commitabd6523d15f40bfee14652619a31a7f65f77f581 (patch)
treead5692b3c115c4859b99a5e87db8d4b2d991e5a8 /net/ipv6/reassembly.c
parentc6fda282294da882f8d8cc4c513940277dd380f5 (diff)
downloadop-kernel-dev-abd6523d15f40bfee14652619a31a7f65f77f581.zip
op-kernel-dev-abd6523d15f40bfee14652619a31a7f65f77f581.tar.gz
[INET]: Consolidate xxx_find() in fragment management
Here we need another callback ->match to check whether the entry found in hash matches the key passed. The key used is the same as the creation argument for inet_frag_create. Yet again, this ->match is the same for netfilter and ipv6. Running a frew steps forward - this callback will later replace the ->equal one. Since the inet_frag_find() uses the already consolidated inet_frag_create() remove the xxx_frag_create from protocol codes. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/reassembly.c')
-rw-r--r--net/ipv6/reassembly.c50
1 files changed, 19 insertions, 31 deletions
diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
index ce87340..11fffe7 100644
--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -155,6 +155,18 @@ int ip6_frag_equal(struct inet_frag_queue *q1, struct inet_frag_queue *q2)
}
EXPORT_SYMBOL(ip6_frag_equal);
+int ip6_frag_match(struct inet_frag_queue *q, void *a)
+{
+ struct frag_queue *fq;
+ struct ip6_create_arg *arg = a;
+
+ fq = container_of(q, struct frag_queue, q);
+ return (fq->id == arg->id &&
+ ipv6_addr_equal(&fq->saddr, arg->src) &&
+ ipv6_addr_equal(&fq->daddr, arg->dst));
+}
+EXPORT_SYMBOL(ip6_frag_match);
+
/* Memory Tracking Functions. */
static inline void frag_kfree_skb(struct sk_buff *skb, int *work)
{
@@ -245,20 +257,20 @@ out:
fq_put(fq);
}
-/* Creation primitives. */
-
-static struct frag_queue *
-ip6_frag_create(__be32 id, struct in6_addr *src, struct in6_addr *dst,
- struct inet6_dev *idev, unsigned int hash)
+static __inline__ struct frag_queue *
+fq_find(__be32 id, struct in6_addr *src, struct in6_addr *dst,
+ struct inet6_dev *idev)
{
struct inet_frag_queue *q;
struct ip6_create_arg arg;
+ unsigned int hash;
arg.id = id;
arg.src = src;
arg.dst = dst;
+ hash = ip6qhashfn(id, src, dst);
- q = inet_frag_create(&ip6_frags, &arg, hash);
+ q = inet_frag_find(&ip6_frags, &arg, hash);
if (q == NULL)
goto oom;
@@ -269,31 +281,6 @@ oom:
return NULL;
}
-static __inline__ struct frag_queue *
-fq_find(__be32 id, struct in6_addr *src, struct in6_addr *dst,
- struct inet6_dev *idev)
-{
- struct frag_queue *fq;
- struct hlist_node *n;
- unsigned int hash;
-
- read_lock(&ip6_frags.lock);
- hash = ip6qhashfn(id, src, dst);
- hlist_for_each_entry(fq, n, &ip6_frags.hash[hash], q.list) {
- if (fq->id == id &&
- ipv6_addr_equal(src, &fq->saddr) &&
- ipv6_addr_equal(dst, &fq->daddr)) {
- atomic_inc(&fq->q.refcnt);
- read_unlock(&ip6_frags.lock);
- return fq;
- }
- }
- read_unlock(&ip6_frags.lock);
-
- return ip6_frag_create(id, src, dst, idev, hash);
-}
-
-
static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb,
struct frag_hdr *fhdr, int nhoff)
{
@@ -673,6 +660,7 @@ void __init ipv6_frag_init(void)
ip6_frags.destructor = ip6_frag_free;
ip6_frags.skb_free = NULL;
ip6_frags.qsize = sizeof(struct frag_queue);
+ ip6_frags.match = ip6_frag_match;
ip6_frags.equal = ip6_frag_equal;
ip6_frags.frag_expire = ip6_frag_expire;
inet_frags_init(&ip6_frags);
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