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Message-ID: <4714C3EA.4080109@openvz.org> Date: Tue, 16 Oct 2007 18:00:10 +0400 From: Pavel Emelyanov <xemul@...nvz.org> To: David Miller <davem@...emloft.net> CC: Linux Netdev List <netdev@...r.kernel.org>, devel@...nvz.org Subject: [PATCH 4/7] 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@...nvz.org> --- diff --git a/include/net/inet_frag.h b/include/net/inet_frag.h index 412b858..e33072b 100644 --- a/include/net/inet_frag.h +++ b/include/net/inet_frag.h @@ -39,6 +39,8 @@ struct inet_frags { struct inet_frags_ctl *ctl; unsigned int (*hashfn)(struct inet_frag_queue *); + void (*constructor)(struct inet_frag_queue *q, + void *arg); void (*destructor)(struct inet_frag_queue *); void (*skb_free)(struct sk_buff *); int (*equal)(struct inet_frag_queue *q1, @@ -53,9 +55,8 @@ void inet_frag_kill(struct inet_frag_queue *q, struct inet_frags *f); void inet_frag_destroy(struct inet_frag_queue *q, struct inet_frags *f, int *work); int inet_frag_evictor(struct inet_frags *f); -struct inet_frag_queue *inet_frag_intern(struct inet_frag_queue *q, - struct inet_frags *f, unsigned int hash); -struct inet_frag_queue *inet_frag_alloc(struct inet_frags *f); +struct inet_frag_queue *inet_frag_create(struct inet_frags *f, + void *create_arg, unsigned int hash); static inline void inet_frag_put(struct inet_frag_queue *q, struct inet_frags *f) { diff --git a/include/net/ipv6.h b/include/net/ipv6.h index ff12697..9dc99bf 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -380,6 +380,14 @@ static inline int ipv6_prefix_equal(const struct in6_addr *a1, struct inet_frag_queue; int ip6_frag_equal(struct inet_frag_queue *q1, struct inet_frag_queue *q2); +struct ip6_create_arg { + __be32 id; + struct in6_addr *src; + struct in6_addr *dst; +}; + +void ip6_frag_init(struct inet_frag_queue *q, void *a); + static inline int ipv6_addr_any(const struct in6_addr *a) { return ((a->s6_addr32[0] | a->s6_addr32[1] | diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c index 22539fb..0124885 100644 --- a/net/ipv4/inet_fragment.c +++ b/net/ipv4/inet_fragment.c @@ -173,7 +173,7 @@ int inet_frag_evictor(struct inet_frags *f) } EXPORT_SYMBOL(inet_frag_evictor); -struct inet_frag_queue *inet_frag_intern(struct inet_frag_queue *qp_in, +static struct inet_frag_queue *inet_frag_intern(struct inet_frag_queue *qp_in, struct inet_frags *f, unsigned int hash) { struct inet_frag_queue *qp; @@ -208,9 +208,8 @@ struct inet_frag_queue *inet_frag_intern(struct inet_frag_queue *qp_in, write_unlock(&f->lock); return qp; } -EXPORT_SYMBOL(inet_frag_intern); -struct inet_frag_queue *inet_frag_alloc(struct inet_frags *f) +static struct inet_frag_queue *inet_frag_alloc(struct inet_frags *f, void *arg) { struct inet_frag_queue *q; @@ -218,6 +217,7 @@ struct inet_frag_queue *inet_frag_alloc(struct inet_frags *f) if (q == NULL) return NULL; + f->constructor(q, arg); atomic_add(f->qsize, &f->mem); setup_timer(&q->timer, f->frag_expire, (unsigned long)q); spin_lock_init(&q->lock); @@ -225,4 +225,16 @@ struct inet_frag_queue *inet_frag_alloc(struct inet_frags *f) return q; } -EXPORT_SYMBOL(inet_frag_alloc); + +struct inet_frag_queue *inet_frag_create(struct inet_frags *f, void *arg, + unsigned int hash) +{ + struct inet_frag_queue *q; + + q = inet_frag_alloc(f, arg); + if (q == NULL) + return NULL; + + return inet_frag_intern(q, f, hash); +} +EXPORT_SYMBOL(inet_frag_create); diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c index 2cf8cdc..db29c3c 100644 --- a/net/ipv4/ip_fragment.c +++ b/net/ipv4/ip_fragment.c @@ -108,6 +108,11 @@ int ip_frag_mem(void) static int ip_frag_reasm(struct ipq *qp, struct sk_buff *prev, struct net_device *dev); +struct ip4_create_arg { + struct iphdr *iph; + u32 user; +}; + static unsigned int ipqhashfn(__be16 id, __be32 saddr, __be32 daddr, u8 prot) { return jhash_3words((__force u32)id << 16 | prot, @@ -146,6 +151,20 @@ static __inline__ void frag_kfree_skb(struct sk_buff *skb, int *work) kfree_skb(skb); } +static void ip4_frag_init(struct inet_frag_queue *q, void *a) +{ + struct ipq *qp = container_of(q, struct ipq, q); + struct ip4_create_arg *arg = a; + + qp->protocol = arg->iph->protocol; + qp->id = arg->iph->id; + qp->saddr = arg->iph->saddr; + qp->daddr = arg->iph->daddr; + qp->user = arg->user; + qp->peer = sysctl_ipfrag_max_dist ? + inet_getpeer(arg->iph->saddr, 1) : NULL; +} + static __inline__ void ip4_frag_free(struct inet_frag_queue *q) { struct ipq *qp; @@ -156,14 +175,6 @@ static __inline__ void ip4_frag_free(struct inet_frag_queue *q) kfree(qp); } -static __inline__ struct ipq *frag_alloc_queue(void) -{ - struct inet_frag_queue *q; - - q = inet_frag_alloc(&ip4_frags); - return q ? container_of(q, struct ipq, q) : NULL; -} - /* Destruction primitives. */ @@ -226,30 +237,20 @@ out: /* Creation primitives. */ -static struct ipq *ip_frag_intern(struct ipq *qp_in, unsigned int hash) -{ - struct inet_frag_queue *q; - - q = inet_frag_intern(&qp_in->q, &ip4_frags, hash); - return container_of(q, struct ipq, q); -} - /* Add an entry to the 'ipq' queue for a newly received IP datagram. */ static struct ipq *ip_frag_create(struct iphdr *iph, u32 user, unsigned int h) { - struct ipq *qp; + struct inet_frag_queue *q; + struct ip4_create_arg arg; - if ((qp = frag_alloc_queue()) == NULL) - goto out_nomem; + arg.iph = iph; + arg.user = user; - qp->protocol = iph->protocol; - qp->id = iph->id; - qp->saddr = iph->saddr; - qp->daddr = iph->daddr; - qp->user = user; - qp->peer = sysctl_ipfrag_max_dist ? inet_getpeer(iph->saddr, 1) : NULL; + q = inet_frag_create(&ip4_frags, &arg, h); + if (q == NULL) + goto out_nomem; - return ip_frag_intern(qp, h); + return container_of(q, struct ipq, q); out_nomem: LIMIT_NETDEBUG(KERN_ERR "ip_frag_create: no memory left !\n"); @@ -642,6 +643,7 @@ void __init ipfrag_init(void) { ip4_frags.ctl = &ip4_frags_ctl; ip4_frags.hashfn = ip4_hashfn; + ip4_frags.constructor = ip4_frag_init; ip4_frags.destructor = ip4_frag_free; ip4_frags.skb_free = NULL; ip4_frags.qsize = sizeof(struct ipq); diff --git a/net/ipv6/netfilter/nf_conntrack_reasm.c b/net/ipv6/netfilter/nf_conntrack_reasm.c index 29a42d2..72451e2 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 21913c7..ce87340 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); -- 1.5.3.4 - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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