diff --git a/include/net/ipv6.h b/include/net/ipv6.h index 9bed5d4..81d4455 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -411,6 +411,25 @@ struct ip6_create_arg { void ip6_frag_init(struct inet_frag_queue *q, void *a); bool ip6_frag_match(struct inet_frag_queue *q, void *a); +/* + * Equivalent of ipv4 struct ip + */ +struct frag_queue { + struct inet_frag_queue q; + + __be32 id; /* fragment id */ + u32 user; + struct in6_addr saddr; + struct in6_addr daddr; + + int iif; + unsigned int csum; + __u16 nhoffset; +}; + +void ip6_expire_frag_queue(struct net *net, struct frag_queue *fq, + struct inet_frags *frags); + static inline bool ipv6_addr_any(const struct in6_addr *a) { #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64 diff --git a/net/ipv6/netfilter/nf_conntrack_reasm.c b/net/ipv6/netfilter/nf_conntrack_reasm.c index fff5b71..ecefb31 100644 --- a/net/ipv6/netfilter/nf_conntrack_reasm.c +++ b/net/ipv6/netfilter/nf_conntrack_reasm.c @@ -57,19 +57,6 @@ struct nf_ct_frag6_skb_cb #define NFCT_FRAG6_CB(skb) ((struct nf_ct_frag6_skb_cb*)((skb)->cb)) -struct nf_ct_frag6_queue -{ - struct inet_frag_queue q; - - __be32 id; /* fragment id */ - u32 user; - struct in6_addr saddr; - struct in6_addr daddr; - - unsigned int csum; - __u16 nhoffset; -}; - static struct inet_frags nf_frags; #ifdef CONFIG_SYSCTL @@ -150,9 +137,9 @@ static void __net_exit nf_ct_frags6_sysctl_unregister(struct net *net) static unsigned int nf_hashfn(struct inet_frag_queue *q) { - const struct nf_ct_frag6_queue *nq; + const struct frag_queue *nq; - nq = container_of(q, struct nf_ct_frag6_queue, q); + nq = container_of(q, struct frag_queue, q); return inet6_hash_frag(nq->id, &nq->saddr, &nq->daddr, nf_frags.rnd); } @@ -162,43 +149,19 @@ static void nf_skb_free(struct sk_buff *skb) kfree_skb(NFCT_FRAG6_CB(skb)->orig); } -/* Destruction primitives. */ - -static __inline__ void fq_put(struct nf_ct_frag6_queue *fq) -{ - inet_frag_put(&fq->q, &nf_frags); -} - -/* Kill fq entry. It is not destroyed immediately, - * because caller (and someone more) holds reference count. - */ -static __inline__ void fq_kill(struct nf_ct_frag6_queue *fq) -{ - inet_frag_kill(&fq->q, &nf_frags); -} - static void nf_ct_frag6_expire(unsigned long data) { - struct nf_ct_frag6_queue *fq; - - fq = container_of((struct inet_frag_queue *)data, - struct nf_ct_frag6_queue, q); - - spin_lock(&fq->q.lock); + struct frag_queue *fq; + struct net *net; - if (fq->q.last_in & INET_FRAG_COMPLETE) - goto out; + fq = container_of((struct inet_frag_queue *)data, struct frag_queue, q); + net = container_of(fq->q.net, struct net, nf_ct.frags); - fq_kill(fq); - -out: - spin_unlock(&fq->q.lock); - fq_put(fq); + ip6_expire_frag_queue(net, fq, &nf_frags); } /* Creation primitives. */ - -static __inline__ struct nf_ct_frag6_queue* +static __inline__ struct frag_queue * fq_find(struct net *net, __be32 id, u32 user, struct in6_addr *src, struct in6_addr *dst) { struct inet_frag_queue *q; @@ -218,14 +181,14 @@ fq_find(struct net *net, __be32 id, u32 user, struct in6_addr *src, struct in6_a if (q == NULL) goto oom; - return container_of(q, struct nf_ct_frag6_queue, q); + return container_of(q, struct frag_queue, q); oom: return NULL; } -static int nf_ct_frag6_queue(struct nf_ct_frag6_queue*fq, struct sk_buff *skb, +static int nf_ct_frag6_queue(struct frag_queue *fq, struct sk_buff *skb, const struct frag_hdr *fhdr, int nhoff) { struct sk_buff *prev, *next; @@ -366,7 +329,7 @@ found: return 0; discard_fq: - fq_kill(fq); + inet_frag_kill(&fq->q, &nf_frags); err: return -1; } @@ -381,12 +344,12 @@ err: * the last and the first frames arrived and all the bits are here. */ static struct sk_buff * -nf_ct_frag6_reasm(struct nf_ct_frag6_queue *fq, struct net_device *dev) +nf_ct_frag6_reasm(struct frag_queue *fq, struct net_device *dev) { struct sk_buff *fp, *op, *head = fq->q.fragments; int payload_len; - fq_kill(fq); + inet_frag_kill(&fq->q, &nf_frags); WARN_ON(head == NULL); WARN_ON(NFCT_FRAG6_CB(head)->offset != 0); @@ -568,7 +531,7 @@ struct sk_buff *nf_ct_frag6_gather(struct sk_buff *skb, u32 user) struct net_device *dev = skb->dev; struct net *net = skb_dst(skb) ? dev_net(skb_dst(skb)->dev) : dev_net(skb->dev); struct frag_hdr *fhdr; - struct nf_ct_frag6_queue *fq; + struct frag_queue *fq; struct ipv6hdr *hdr; int fhoff, nhoff; u8 prevhdr; @@ -617,7 +580,7 @@ struct sk_buff *nf_ct_frag6_gather(struct sk_buff *skb, u32 user) if (nf_ct_frag6_queue(fq, clone, fhdr, nhoff) < 0) { spin_unlock_bh(&fq->q.lock); pr_debug("Can't insert skb to queue\n"); - fq_put(fq); + inet_frag_put(&fq->q, &nf_frags); goto ret_orig; } @@ -629,7 +592,7 @@ struct sk_buff *nf_ct_frag6_gather(struct sk_buff *skb, u32 user) } spin_unlock_bh(&fq->q.lock); - fq_put(fq); + inet_frag_put(&fq->q, &nf_frags); return ret_skb; ret_orig: @@ -693,7 +656,7 @@ int nf_ct_frag6_init(void) nf_frags.constructor = ip6_frag_init; nf_frags.destructor = NULL; nf_frags.skb_free = nf_skb_free; - nf_frags.qsize = sizeof(struct nf_ct_frag6_queue); + nf_frags.qsize = sizeof(struct frag_queue); nf_frags.match = ip6_frag_match; nf_frags.frag_expire = nf_ct_frag6_expire; nf_frags.secret_interval = 10 * 60 * HZ; diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c index 4ff9af6..8508c8c 100644 --- a/net/ipv6/reassembly.c +++ b/net/ipv6/reassembly.c @@ -65,24 +65,6 @@ struct ip6frag_skb_cb #define FRAG6_CB(skb) ((struct ip6frag_skb_cb*)((skb)->cb)) -/* - * Equivalent of ipv4 struct ipq - */ - -struct frag_queue -{ - struct inet_frag_queue q; - - __be32 id; /* fragment id */ - u32 user; - struct in6_addr saddr; - struct in6_addr daddr; - - int iif; - unsigned int csum; - __u16 nhoffset; -}; - static struct inet_frags ip6_frags; int ip6_frag_nqueues(struct net *net) @@ -159,21 +141,6 @@ void ip6_frag_init(struct inet_frag_queue *q, void *a) } EXPORT_SYMBOL(ip6_frag_init); -/* Destruction primitives. */ - -static __inline__ void fq_put(struct frag_queue *fq) -{ - inet_frag_put(&fq->q, &ip6_frags); -} - -/* Kill fq entry. It is not destroyed immediately, - * because caller (and someone more) holds reference count. - */ -static __inline__ void fq_kill(struct frag_queue *fq) -{ - inet_frag_kill(&fq->q, &ip6_frags); -} - static void ip6_evictor(struct net *net, struct inet6_dev *idev) { int evicted; @@ -183,22 +150,17 @@ static void ip6_evictor(struct net *net, struct inet6_dev *idev) IP6_ADD_STATS_BH(net, idev, IPSTATS_MIB_REASMFAILS, evicted); } -static void ip6_frag_expire(unsigned long data) +void ip6_expire_frag_queue(struct net *net, struct frag_queue *fq, struct inet_frags *frags) { - struct frag_queue *fq; struct net_device *dev = NULL; - struct net *net; - - fq = container_of((struct inet_frag_queue *)data, struct frag_queue, q); spin_lock(&fq->q.lock); if (fq->q.last_in & INET_FRAG_COMPLETE) goto out; - fq_kill(fq); + inet_frag_kill(&fq->q, frags); - net = container_of(fq->q.net, struct net, ipv6.frags); rcu_read_lock(); dev = dev_get_by_index_rcu(net, fq->iif); if (!dev) @@ -222,7 +184,19 @@ out_rcu_unlock: rcu_read_unlock(); out: spin_unlock(&fq->q.lock); - fq_put(fq); + inet_frag_put(&fq->q, frags); +} +EXPORT_SYMBOL(ip6_expire_frag_queue); + +static void ip6_frag_expire(unsigned long data) +{ + struct frag_queue *fq; + struct net *net; + + fq = container_of((struct inet_frag_queue *)data, struct frag_queue, q); + net = container_of(fq->q.net, struct net, ipv6.frags); + + ip6_expire_frag_queue(net, fq, &ip6_frags); } static __inline__ struct frag_queue * @@ -391,7 +365,7 @@ found: return -1; discard_fq: - fq_kill(fq); + inet_frag_kill(&fq->q, &ip6_frags); err: IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_REASMFAILS); @@ -417,7 +391,7 @@ static int ip6_frag_reasm(struct frag_queue *fq, struct sk_buff *prev, unsigned int nhoff; int sum_truesize; - fq_kill(fq); + inet_frag_kill(&fq->q, &ip6_frags); /* Make the one we just received the head. */ if (prev) { @@ -586,7 +560,7 @@ static int ipv6_frag_rcv(struct sk_buff *skb) ret = ip6_frag_queue(fq, skb, fhdr, IP6CB(skb)->nhoff); spin_unlock(&fq->q.lock); - fq_put(fq); + inet_frag_put(&fq->q, &ip6_frags); return ret; }