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[RFC,net-next,5/7,v2] IPv6:netfilter: Record MIB counter when reassembling all fragments

Message ID 4B88BE44.7030600@cn.fujitsu.com
State Not Applicable, archived
Delegated to: David Miller
Headers show

Commit Message

Shan Wei Feb. 27, 2010, 6:40 a.m. UTC 
According to RFC4293, this patch records MIB counter of IPSTATS_MIB_REASMFAILS, 
IPSTATS_MIB_REASMOKS, when reassembling fragments after all fragments reached.


Signed-off-by: Shan Wei <shanwei@cn.fujitsu.com>
---
 net/ipv6/netfilter/nf_conntrack_reasm.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
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Patch

diff --git a/net/ipv6/netfilter/nf_conntrack_reasm.c b/net/ipv6/netfilter/nf_conntrack_reasm.c
index 27d8ac1..4640795 100644
--- a/net/ipv6/netfilter/nf_conntrack_reasm.c
+++ b/net/ipv6/netfilter/nf_conntrack_reasm.c
@@ -485,6 +485,7 @@  static struct sk_buff *
 nf_ct_frag6_reasm(struct nf_ct_frag6_queue *fq, struct net_device *dev)
 {
 	struct sk_buff *fp, *op, *head = fq->q.fragments;
+	struct net *net = container_of(fq->q.net, struct net, ipv6.frags);
 	int    payload_len;
 
 	fq_kill(fq);
@@ -586,6 +587,9 @@  nf_ct_frag6_reasm(struct nf_ct_frag6_queue *fq, struct net_device *dev)
 		NFCT_FRAG6_CB(fp)->orig = NULL;
 	}
 
+	rcu_read_lock();
+	IP6_INC_STATS(net, __in6_dev_get(dev), IPSTATS_MIB_REASMOKS);
+	rcu_read_unlock();
 	return head;
 
 out_oversize:
@@ -596,6 +600,9 @@  out_oom:
 	if (net_ratelimit())
 		printk(KERN_DEBUG "nf_ct_frag6_reasm: no memory for reassembly\n");
 out_fail:
+	rcu_read_lock();
+	IP6_INC_STATS(net, __in6_dev_get(dev), IPSTATS_MIB_REASMFAILS);
+	rcu_read_unlock();
 	return NULL;
 }