[NETNS][FRAGS]: Make the mem counter per-namespace.
This is also simple, but introduces more changes, since
then mem counter is altered in more places.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
index 77a8740..241b2cc 100644
--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -89,9 +89,9 @@
return net->ipv6.frags.nqueues;
}
-int ip6_frag_mem(void)
+int ip6_frag_mem(struct net *net)
{
- return atomic_read(&ip6_frags.mem);
+ return atomic_read(&net->ipv6.frags.mem);
}
static int ip6_frag_reasm(struct frag_queue *fq, struct sk_buff *prev,
@@ -149,11 +149,12 @@
EXPORT_SYMBOL(ip6_frag_match);
/* Memory Tracking Functions. */
-static inline void frag_kfree_skb(struct sk_buff *skb, int *work)
+static inline void frag_kfree_skb(struct netns_frags *nf,
+ struct sk_buff *skb, int *work)
{
if (work)
*work -= skb->truesize;
- atomic_sub(skb->truesize, &ip6_frags.mem);
+ atomic_sub(skb->truesize, &nf->mem);
kfree_skb(skb);
}
@@ -183,11 +184,11 @@
inet_frag_kill(&fq->q, &ip6_frags);
}
-static void ip6_evictor(struct inet6_dev *idev)
+static void ip6_evictor(struct net *net, struct inet6_dev *idev)
{
int evicted;
- evicted = inet_frag_evictor(&ip6_frags);
+ evicted = inet_frag_evictor(&net->ipv6.frags, &ip6_frags);
if (evicted)
IP6_ADD_STATS_BH(idev, IPSTATS_MIB_REASMFAILS, evicted);
}
@@ -389,7 +390,7 @@
fq->q.fragments = next;
fq->q.meat -= free_it->len;
- frag_kfree_skb(free_it, NULL);
+ frag_kfree_skb(fq->q.net, free_it, NULL);
}
}
@@ -409,7 +410,7 @@
}
fq->q.stamp = skb->tstamp;
fq->q.meat += skb->len;
- atomic_add(skb->truesize, &ip6_frags.mem);
+ atomic_add(skb->truesize, &fq->q.net->mem);
/* The first fragment.
* nhoffset is obtained from the first fragment, of course.
@@ -503,7 +504,7 @@
head->len -= clone->len;
clone->csum = 0;
clone->ip_summed = head->ip_summed;
- atomic_add(clone->truesize, &ip6_frags.mem);
+ atomic_add(clone->truesize, &fq->q.net->mem);
}
/* We have to remove fragment header from datagram and to relocate
@@ -518,7 +519,7 @@
skb_shinfo(head)->frag_list = head->next;
skb_reset_transport_header(head);
skb_push(head, head->data - skb_network_header(head));
- atomic_sub(head->truesize, &ip6_frags.mem);
+ atomic_sub(head->truesize, &fq->q.net->mem);
for (fp=head->next; fp; fp = fp->next) {
head->data_len += fp->len;
@@ -528,7 +529,7 @@
else if (head->ip_summed == CHECKSUM_COMPLETE)
head->csum = csum_add(head->csum, fp->csum);
head->truesize += fp->truesize;
- atomic_sub(fp->truesize, &ip6_frags.mem);
+ atomic_sub(fp->truesize, &fq->q.net->mem);
}
head->next = NULL;
@@ -600,8 +601,9 @@
}
net = skb->dev->nd_net;
- if (atomic_read(&ip6_frags.mem) > init_net.ipv6.sysctl.frags.high_thresh)
- ip6_evictor(ip6_dst_idev(skb->dst));
+ if (atomic_read(&net->ipv6.frags.mem) >
+ init_net.ipv6.sysctl.frags.high_thresh)
+ ip6_evictor(net, ip6_dst_idev(skb->dst));
if ((fq = fq_find(net, fhdr->identification, &hdr->saddr, &hdr->daddr,
ip6_dst_idev(skb->dst))) != NULL) {