diff options
Diffstat (limited to 'net/ipv4/inet_fragment.c')
-rw-r--r-- | net/ipv4/inet_fragment.c | 85 |
1 files changed, 50 insertions, 35 deletions
diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c index e15e04f..724d69a 100644 --- a/net/ipv4/inet_fragment.c +++ b/net/ipv4/inet_fragment.c @@ -47,7 +47,7 @@ static void inet_frag_secret_rebuild(unsigned long dummy) } write_unlock(&f->lock); - mod_timer(&f->secret_timer, now + f->ctl->secret_interval); + mod_timer(&f->secret_timer, now + f->secret_interval); } void inet_frags_init(struct inet_frags *f) @@ -57,35 +57,45 @@ void inet_frags_init(struct inet_frags *f) for (i = 0; i < INETFRAGS_HASHSZ; i++) INIT_HLIST_HEAD(&f->hash[i]); - INIT_LIST_HEAD(&f->lru_list); rwlock_init(&f->lock); f->rnd = (u32) ((num_physpages ^ (num_physpages>>7)) ^ (jiffies ^ (jiffies >> 6))); - f->nqueues = 0; - atomic_set(&f->mem, 0); - - init_timer(&f->secret_timer); - f->secret_timer.function = inet_frag_secret_rebuild; - f->secret_timer.data = (unsigned long)f; - f->secret_timer.expires = jiffies + f->ctl->secret_interval; + setup_timer(&f->secret_timer, inet_frag_secret_rebuild, + (unsigned long)f); + f->secret_timer.expires = jiffies + f->secret_interval; add_timer(&f->secret_timer); } EXPORT_SYMBOL(inet_frags_init); +void inet_frags_init_net(struct netns_frags *nf) +{ + nf->nqueues = 0; + atomic_set(&nf->mem, 0); + INIT_LIST_HEAD(&nf->lru_list); +} +EXPORT_SYMBOL(inet_frags_init_net); + void inet_frags_fini(struct inet_frags *f) { del_timer(&f->secret_timer); } EXPORT_SYMBOL(inet_frags_fini); +void inet_frags_exit_net(struct netns_frags *nf, struct inet_frags *f) +{ + nf->low_thresh = 0; + inet_frag_evictor(nf, f); +} +EXPORT_SYMBOL(inet_frags_exit_net); + static inline void fq_unlink(struct inet_frag_queue *fq, struct inet_frags *f) { write_lock(&f->lock); hlist_del(&fq->list); list_del(&fq->lru_list); - f->nqueues--; + fq->net->nqueues--; write_unlock(&f->lock); } @@ -103,13 +113,13 @@ void inet_frag_kill(struct inet_frag_queue *fq, struct inet_frags *f) EXPORT_SYMBOL(inet_frag_kill); -static inline void frag_kfree_skb(struct inet_frags *f, struct sk_buff *skb, - int *work) +static inline void frag_kfree_skb(struct netns_frags *nf, struct inet_frags *f, + struct sk_buff *skb, int *work) { if (work) *work -= skb->truesize; - atomic_sub(skb->truesize, &f->mem); + atomic_sub(skb->truesize, &nf->mem); if (f->skb_free) f->skb_free(skb); kfree_skb(skb); @@ -119,22 +129,24 @@ void inet_frag_destroy(struct inet_frag_queue *q, struct inet_frags *f, int *work) { struct sk_buff *fp; + struct netns_frags *nf; BUG_TRAP(q->last_in & COMPLETE); BUG_TRAP(del_timer(&q->timer) == 0); /* Release all fragment data. */ fp = q->fragments; + nf = q->net; while (fp) { struct sk_buff *xp = fp->next; - frag_kfree_skb(f, fp, work); + frag_kfree_skb(nf, f, fp, work); fp = xp; } if (work) *work -= f->qsize; - atomic_sub(f->qsize, &f->mem); + atomic_sub(f->qsize, &nf->mem); if (f->destructor) f->destructor(q); @@ -143,20 +155,20 @@ void inet_frag_destroy(struct inet_frag_queue *q, struct inet_frags *f, } EXPORT_SYMBOL(inet_frag_destroy); -int inet_frag_evictor(struct inet_frags *f) +int inet_frag_evictor(struct netns_frags *nf, struct inet_frags *f) { struct inet_frag_queue *q; int work, evicted = 0; - work = atomic_read(&f->mem) - f->ctl->low_thresh; + work = atomic_read(&nf->mem) - nf->low_thresh; while (work > 0) { read_lock(&f->lock); - if (list_empty(&f->lru_list)) { + if (list_empty(&nf->lru_list)) { read_unlock(&f->lock); break; } - q = list_first_entry(&f->lru_list, + q = list_first_entry(&nf->lru_list, struct inet_frag_queue, lru_list); atomic_inc(&q->refcnt); read_unlock(&f->lock); @@ -175,8 +187,9 @@ int inet_frag_evictor(struct inet_frags *f) } EXPORT_SYMBOL(inet_frag_evictor); -static struct inet_frag_queue *inet_frag_intern(struct inet_frag_queue *qp_in, - struct inet_frags *f, unsigned int hash, void *arg) +static struct inet_frag_queue *inet_frag_intern(struct netns_frags *nf, + struct inet_frag_queue *qp_in, struct inet_frags *f, + unsigned int hash, void *arg) { struct inet_frag_queue *qp; #ifdef CONFIG_SMP @@ -190,7 +203,7 @@ static struct inet_frag_queue *inet_frag_intern(struct inet_frag_queue *qp_in, * promoted read lock to write lock. */ hlist_for_each_entry(qp, n, &f->hash[hash], list) { - if (f->match(qp, arg)) { + if (qp->net == nf && f->match(qp, arg)) { atomic_inc(&qp->refcnt); write_unlock(&f->lock); qp_in->last_in |= COMPLETE; @@ -200,18 +213,19 @@ static struct inet_frag_queue *inet_frag_intern(struct inet_frag_queue *qp_in, } #endif qp = qp_in; - if (!mod_timer(&qp->timer, jiffies + f->ctl->timeout)) + if (!mod_timer(&qp->timer, jiffies + nf->timeout)) atomic_inc(&qp->refcnt); atomic_inc(&qp->refcnt); hlist_add_head(&qp->list, &f->hash[hash]); - list_add_tail(&qp->lru_list, &f->lru_list); - f->nqueues++; + list_add_tail(&qp->lru_list, &nf->lru_list); + nf->nqueues++; write_unlock(&f->lock); return qp; } -static struct inet_frag_queue *inet_frag_alloc(struct inet_frags *f, void *arg) +static struct inet_frag_queue *inet_frag_alloc(struct netns_frags *nf, + struct inet_frags *f, void *arg) { struct inet_frag_queue *q; @@ -220,35 +234,36 @@ static struct inet_frag_queue *inet_frag_alloc(struct inet_frags *f, void *arg) return NULL; f->constructor(q, arg); - atomic_add(f->qsize, &f->mem); + atomic_add(f->qsize, &nf->mem); setup_timer(&q->timer, f->frag_expire, (unsigned long)q); spin_lock_init(&q->lock); atomic_set(&q->refcnt, 1); + q->net = nf; return q; } -static struct inet_frag_queue *inet_frag_create(struct inet_frags *f, - void *arg, unsigned int hash) +static struct inet_frag_queue *inet_frag_create(struct netns_frags *nf, + struct inet_frags *f, void *arg, unsigned int hash) { struct inet_frag_queue *q; - q = inet_frag_alloc(f, arg); + q = inet_frag_alloc(nf, f, arg); if (q == NULL) return NULL; - return inet_frag_intern(q, f, hash, arg); + return inet_frag_intern(nf, q, f, hash, arg); } -struct inet_frag_queue *inet_frag_find(struct inet_frags *f, void *key, - unsigned int hash) +struct inet_frag_queue *inet_frag_find(struct netns_frags *nf, + struct inet_frags *f, void *key, unsigned int hash) { struct inet_frag_queue *q; struct hlist_node *n; read_lock(&f->lock); hlist_for_each_entry(q, n, &f->hash[hash], list) { - if (f->match(q, key)) { + if (q->net == nf && f->match(q, key)) { atomic_inc(&q->refcnt); read_unlock(&f->lock); return q; @@ -256,6 +271,6 @@ struct inet_frag_queue *inet_frag_find(struct inet_frags *f, void *key, } read_unlock(&f->lock); - return inet_frag_create(f, key, hash); + return inet_frag_create(nf, f, key, hash); } EXPORT_SYMBOL(inet_frag_find); |