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path: root/net/ipv4/ip_input.c
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Diffstat (limited to 'net/ipv4/ip_input.c')
-rw-r--r--net/ipv4/ip_input.c14
1 files changed, 13 insertions, 1 deletions
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index 324e7e0fdb2..97069399d86 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -329,6 +329,7 @@ drop:
static inline int ip_rcv_finish(struct sk_buff *skb)
{
const struct iphdr *iph = ip_hdr(skb);
+ struct rtable *rt;
/*
* Initialise the virtual path cache for the packet. It describes
@@ -340,6 +341,8 @@ static inline int ip_rcv_finish(struct sk_buff *skb)
if (unlikely(err)) {
if (err == -EHOSTUNREACH)
IP_INC_STATS_BH(IPSTATS_MIB_INADDRERRORS);
+ else if (err == -ENETUNREACH)
+ IP_INC_STATS_BH(IPSTATS_MIB_INNOROUTES);
goto drop;
}
}
@@ -358,6 +361,12 @@ static inline int ip_rcv_finish(struct sk_buff *skb)
if (iph->ihl > 5 && ip_rcv_options(skb))
goto drop;
+ rt = (struct rtable*)skb->dst;
+ if (rt->rt_type == RTN_MULTICAST)
+ IP_INC_STATS_BH(IPSTATS_MIB_INMCASTPKTS);
+ else if (rt->rt_type == RTN_BROADCAST)
+ IP_INC_STATS_BH(IPSTATS_MIB_INBCASTPKTS);
+
return dst_input(skb);
drop:
@@ -414,7 +423,10 @@ int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt,
goto inhdr_error;
len = ntohs(iph->tot_len);
- if (skb->len < len || len < (iph->ihl*4))
+ if (skb->len < len) {
+ IP_INC_STATS_BH(IPSTATS_MIB_INTRUNCATEDPKTS);
+ goto drop;
+ } else if (len < (iph->ihl*4))
goto inhdr_error;
/* Our transport medium may have padded the buffer out. Now we know it