This will avoid code duplication and messing with mib counters
in the planned netfilter reverse path filter match.
Signed-off-by: Florian Westphal <fw@xxxxxxxxx>
---
include/net/ip.h | 1 +
net/ipv4/ip_input.c | 21 ++++++++++++---------
2 files changed, 13 insertions(+), 9 deletions(-)
diff --git a/include/net/ip.h b/include/net/ip.h
index e9ea7c7..0001633 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -95,6 +95,7 @@ extern int ip_build_and_send_pkt(struct sk_buff *skb, struct sock *sk,
struct ip_options_rcu *opt);
extern int ip_rcv(struct sk_buff *skb, struct net_device *dev,
struct packet_type *pt, struct net_device *orig_dev);
+extern void ip_rcv_inc_route_err_stats(struct net *net, int err);
extern int ip_local_deliver(struct sk_buff *skb);
extern int ip_mr_input(struct sk_buff *skb);
extern int ip_output(struct sk_buff *skb);
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index c8f48ef..43679f4 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -314,6 +314,17 @@ drop:
return -1;
}
+void ip_rcv_inc_route_err_stats(struct net *net, int err)
+{
+ if (err == -EHOSTUNREACH)
+ IP_INC_STATS_BH(net, IPSTATS_MIB_INADDRERRORS);
+ else if (err == -ENETUNREACH)
+ IP_INC_STATS_BH(net, IPSTATS_MIB_INNOROUTES);
+ else if (err == -EXDEV)
+ NET_INC_STATS_BH(net, LINUX_MIB_IPRPFILTER);
+}
+EXPORT_SYMBOL_GPL(ip_rcv_inc_route_err_stats);
+
static int ip_rcv_finish(struct sk_buff *skb)
{
const struct iphdr *iph = ip_hdr(skb);
@@ -327,15 +338,7 @@ static int ip_rcv_finish(struct sk_buff *skb)
int err = ip_route_input_noref(skb, iph->daddr, iph->saddr,
iph->tos, skb->dev);
if (unlikely(err)) {
- if (err == -EHOSTUNREACH)
- IP_INC_STATS_BH(dev_net(skb->dev),
- IPSTATS_MIB_INADDRERRORS);
- else if (err == -ENETUNREACH)
- IP_INC_STATS_BH(dev_net(skb->dev),
- IPSTATS_MIB_INNOROUTES);
- else if (err == -EXDEV)
- NET_INC_STATS_BH(dev_net(skb->dev),
- LINUX_MIB_IPRPFILTER);
+ ip_rcv_inc_route_err_stats(dev_net(skb->dev), err);
goto drop;
}
}
--
1.7.3.4
--
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