struct ipq {
struct ipq *next; /* linked list pointers */
struct list_head lru_list; /* lru list member */
+ u32 user;
u32 saddr;
u32 daddr;
u16 id;
/* Per-bucket lock is easy to add now. */
static struct ipq *ipq_hash[IPQ_HASHSZ];
-static rwlock_t ipfrag_lock = RW_LOCK_UNLOCKED;
+static DEFINE_RWLOCK(ipfrag_lock);
static u32 ipfrag_hash_rnd;
static LIST_HEAD(ipq_lru_list);
int ip_frag_nqueues = 0;
/* Memory limiting on fragments. Evictor trashes the oldest
* fragment queue until we are back under the threshold.
*/
-static void __ip_evictor(int threshold)
+static void ip_evictor(void)
{
struct ipq *qp;
struct list_head *tmp;
int work;
- work = atomic_read(&ip_frag_mem) - threshold;
+ work = atomic_read(&ip_frag_mem) - sysctl_ipfrag_low_thresh;
if (work <= 0)
return;
}
}
-static inline void ip_evictor(void)
-{
- __ip_evictor(sysctl_ipfrag_low_thresh);
-}
-
/*
* Oops, a fragment queue timed out. Kill it and send an ICMP reply.
*/
if(qp->id == qp_in->id &&
qp->saddr == qp_in->saddr &&
qp->daddr == qp_in->daddr &&
- qp->protocol == qp_in->protocol) {
+ qp->protocol == qp_in->protocol &&
+ qp->user == qp_in->user) {
atomic_inc(&qp->refcnt);
write_unlock(&ipfrag_lock);
qp_in->last_in |= COMPLETE;
}
/* Add an entry to the 'ipq' queue for a newly received IP datagram. */
-static struct ipq *ip_frag_create(unsigned hash, struct iphdr *iph)
+static struct ipq *ip_frag_create(unsigned hash, struct iphdr *iph, u32 user)
{
struct ipq *qp;
qp->id = iph->id;
qp->saddr = iph->saddr;
qp->daddr = iph->daddr;
+ qp->user = user;
qp->len = 0;
qp->meat = 0;
qp->fragments = NULL;
init_timer(&qp->timer);
qp->timer.data = (unsigned long) qp; /* pointer to queue */
qp->timer.function = ip_expire; /* expire function */
- qp->lock = SPIN_LOCK_UNLOCKED;
+ spin_lock_init(&qp->lock);
atomic_set(&qp->refcnt, 1);
return ip_frag_intern(hash, qp);
/* Find the correct entry in the "incomplete datagrams" queue for
* this IP datagram, and create new one, if nothing is found.
*/
-static inline struct ipq *ip_find(struct iphdr *iph)
+static inline struct ipq *ip_find(struct iphdr *iph, u32 user)
{
__u16 id = iph->id;
__u32 saddr = iph->saddr;
if(qp->id == id &&
qp->saddr == saddr &&
qp->daddr == daddr &&
- qp->protocol == protocol) {
+ qp->protocol == protocol &&
+ qp->user == user) {
atomic_inc(&qp->refcnt);
read_unlock(&ipfrag_lock);
return qp;
}
read_unlock(&ipfrag_lock);
- return ip_frag_create(hash, iph);
+ return ip_frag_create(hash, iph, user);
}
/* Add new segment to existing queue. */
}
/* Process an incoming IP datagram fragment. */
-struct sk_buff *ip_defrag(struct sk_buff *skb)
+struct sk_buff *ip_defrag(struct sk_buff *skb, u32 user)
{
struct iphdr *iph = skb->nh.iph;
struct ipq *qp;
dev = skb->dev;
/* Lookup (or create) queue header */
- if ((qp = ip_find(iph)) != NULL) {
+ if ((qp = ip_find(iph, user)) != NULL) {
struct sk_buff *ret = NULL;
spin_lock(&qp->lock);
add_timer(&ipfrag_secret_timer);
}
-void ipfrag_flush(void)
-{
- __ip_evictor(0);
-}
-
EXPORT_SYMBOL(ip_defrag);
-EXPORT_SYMBOL(ipfrag_flush);