Add macro IN_DEV_DROP_GRATUITOUS_ARP to facilitate getting
drop_gratuitous_arp value.
Signed-off-by: Zhang Shengju <zhangshen...@cmss.chinamobile.com>
---
include/linux/inetdevice.h | 3 +++
net/ipv4/arp.c | 2 +-
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h
index ee971f3..9d1dd2c 100644
--- a/include/linux/inetdevice.h
+++ b/include/linux/inetdevice.h
@@ -128,6 +128,9 @@ static inline void ipv4_devconf_setall(struct in_device
*in_dev)
#define IN_DEV_ARP_ANNOUNCE(in_dev) IN_DEV_MAXCONF((in_dev), ARP_ANNOUNCE)
#define IN_DEV_ARP_IGNORE(in_dev) IN_DEV_MAXCONF((in_dev), ARP_IGNORE)
#define IN_DEV_ARP_NOTIFY(in_dev) IN_DEV_MAXCONF((in_dev), ARP_NOTIFY)
+#define IN_DEV_DROP_GRATUITOUS_ARP(in_dev) \
+ IN_DEV_ORCONF((in_dev), \
+ DROP_GRATUITOUS_ARP)
struct in_ifaddr {
struct hlist_node hash;
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index c34c754..0bf5cca 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -740,7 +740,7 @@ static int arp_process(struct net *net, struct sock *sk,
struct sk_buff *skb)
* there will be an ARP proxy and gratuitous ARP frames are attacks
* and thus should not be accepted.
*/
- if (sip == tip && IN_DEV_ORCONF(in_dev, DROP_GRATUITOUS_ARP))
+ if (sip == tip && IN_DEV_DROP_GRATUITOUS_ARP(in_dev))
goto out_free_skb;
/*
--
1.8.3.1
