[INET]: Consolidate xxx_frag_create()

This one uses the xxx_frag_intern() and xxx_frag_alloc()
routines, which are already consolidated, so remove them
from protocol code (as promised).

The ->constructor callback is used to init the rest of
the frag queue and it is the same for netfilter and ipv6.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 32 insertions, 52 deletions

diff --git a/net/ipv6/netfilter/nf_conntrack_reasm.c b/net/ipv6/netfilter/nf_conntrack_reasm.c
index 3f8c16b3301e..127d1d842786 100644
--- a/net/ipv6/netfilter/nf_conntrack_reasm.c
+++ b/net/ipv6/netfilter/nf_conntrack_reasm.c
@@ -135,14 +135,6 @@ static void nf_frag_free(struct inet_frag_queue *q)
 	kfree(container_of(q, struct nf_ct_frag6_queue, q));
 }
 
-static inline struct nf_ct_frag6_queue *frag_alloc_queue(void)
-{
-	struct inet_frag_queue *q;
-
-	q = inet_frag_alloc(&nf_frags);
-	return q ? container_of(q, struct nf_ct_frag6_queue, q) : NULL;
-}
-
 /* Destruction primitives. */
 
 static __inline__ void fq_put(struct nf_ct_frag6_queue *fq)
@@ -184,33 +176,25 @@ out:
 
 /* Creation primitives. */
 
-static struct nf_ct_frag6_queue *nf_ct_frag6_intern(unsigned int hash,
-					  struct nf_ct_frag6_queue *fq_in)
+static struct nf_ct_frag6_queue *
+nf_ct_frag6_create(unsigned int hash, __be32 id, struct in6_addr *src,
+		struct in6_addr *dst)
 {
 	struct inet_frag_queue *q;
+	struct ip6_create_arg arg;
 
-	q = inet_frag_intern(&fq_in->q, &nf_frags, hash);
-	return container_of(q, struct nf_ct_frag6_queue, q);
-}
-
-
-static struct nf_ct_frag6_queue *
-nf_ct_frag6_create(unsigned int hash, __be32 id, struct in6_addr *src,				   struct in6_addr *dst)
-{
-	struct nf_ct_frag6_queue *fq;
+	arg.id = id;
+	arg.src = src;
+	arg.dst = dst;
 
-	if ((fq = frag_alloc_queue()) == NULL) {
-		pr_debug("Can't alloc new queue\n");
+	q = inet_frag_create(&nf_frags, &arg, hash);
+	if (q == NULL)
 		goto oom;
-	}
 
-	fq->id = id;
-	ipv6_addr_copy(&fq->saddr, src);
-	ipv6_addr_copy(&fq->daddr, dst);
-
-	return nf_ct_frag6_intern(hash, fq);
+	return container_of(q, struct nf_ct_frag6_queue, q);
 
 oom:
+	pr_debug("Can't alloc new queue\n");
 	return NULL;
 }
 
@@ -718,6 +702,7 @@ int nf_ct_frag6_init(void)
 {
 	nf_frags.ctl = &nf_frags_ctl;
 	nf_frags.hashfn = nf_hashfn;
+	nf_frags.constructor = ip6_frag_init;
 	nf_frags.destructor = nf_frag_free;
 	nf_frags.skb_free = nf_skb_free;
 	nf_frags.qsize = sizeof(struct nf_ct_frag6_queue);
diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
index 21913c78f053..ce8734028d94 100644
--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -164,17 +164,20 @@ static inline void frag_kfree_skb(struct sk_buff *skb, int *work)
 	kfree_skb(skb);
 }
 
-static void ip6_frag_free(struct inet_frag_queue *fq)
+void ip6_frag_init(struct inet_frag_queue *q, void *a)
 {
-	kfree(container_of(fq, struct frag_queue, q));
+	struct frag_queue *fq = container_of(q, struct frag_queue, q);
+	struct ip6_create_arg *arg = a;
+
+	fq->id = arg->id;
+	ipv6_addr_copy(&fq->saddr, arg->src);
+	ipv6_addr_copy(&fq->daddr, arg->dst);
 }
+EXPORT_SYMBOL(ip6_frag_init);
 
-static inline struct frag_queue *frag_alloc_queue(void)
+static void ip6_frag_free(struct inet_frag_queue *fq)
 {
-	struct inet_frag_queue *q;
-
-	q = inet_frag_alloc(&ip6_frags);
-	return q ? container_of(q, struct frag_queue, q) : NULL;
+	kfree(container_of(fq, struct frag_queue, q));
 }
 
 /* Destruction primitives. */
@@ -244,31 +247,22 @@ out:
 
 /* Creation primitives. */
 
-
-static struct frag_queue *ip6_frag_intern(struct frag_queue *fq_in,
-		unsigned int hash)
-{
-	struct inet_frag_queue *q;
-
-	q = inet_frag_intern(&fq_in->q, &ip6_frags, hash);
-	return container_of(q, struct frag_queue, q);
-}
-
-
 static struct frag_queue *
 ip6_frag_create(__be32 id, struct in6_addr *src, struct in6_addr *dst,
 		struct inet6_dev *idev, unsigned int hash)
 {
-	struct frag_queue *fq;
+	struct inet_frag_queue *q;
+	struct ip6_create_arg arg;
 
-	if ((fq = frag_alloc_queue()) == NULL)
-		goto oom;
+	arg.id = id;
+	arg.src = src;
+	arg.dst = dst;
 
-	fq->id = id;
-	ipv6_addr_copy(&fq->saddr, src);
-	ipv6_addr_copy(&fq->daddr, dst);
+	q = inet_frag_create(&ip6_frags, &arg, hash);
+	if (q == NULL)
+		goto oom;
 
-	return ip6_frag_intern(fq, hash);
+	return container_of(q, struct frag_queue, q);
 
 oom:
 	IP6_INC_STATS_BH(idev, IPSTATS_MIB_REASMFAILS);
@@ -675,6 +669,7 @@ void __init ipv6_frag_init(void)
 
 	ip6_frags.ctl = &ip6_frags_ctl;
 	ip6_frags.hashfn = ip6_hashfn;
+	ip6_frags.constructor = ip6_frag_init;
 	ip6_frags.destructor = ip6_frag_free;
 	ip6_frags.skb_free = NULL;
 	ip6_frags.qsize = sizeof(struct frag_queue);