net ipv4: Decouple ipv4 interface parameters from binary sysctl numbers
Stop using the binary sysctl enumeartion in sysctl.h as an index into
a per interface array. This leads to unnecessary binary sysctl number
allocation, and a fragility in data structure and implementation
because of unnecessary coupling.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h
index cf25780..2be1a1a 100644
--- a/include/linux/inetdevice.h
+++ b/include/linux/inetdevice.h
@@ -10,10 +10,40 @@
#include <linux/timer.h>
#include <linux/sysctl.h>
+enum
+{
+ IPV4_DEVCONF_FORWARDING=1,
+ IPV4_DEVCONF_MC_FORWARDING,
+ IPV4_DEVCONF_PROXY_ARP,
+ IPV4_DEVCONF_ACCEPT_REDIRECTS,
+ IPV4_DEVCONF_SECURE_REDIRECTS,
+ IPV4_DEVCONF_SEND_REDIRECTS,
+ IPV4_DEVCONF_SHARED_MEDIA,
+ IPV4_DEVCONF_RP_FILTER,
+ IPV4_DEVCONF_ACCEPT_SOURCE_ROUTE,
+ IPV4_DEVCONF_BOOTP_RELAY,
+ IPV4_DEVCONF_LOG_MARTIANS,
+ IPV4_DEVCONF_TAG,
+ IPV4_DEVCONF_ARPFILTER,
+ IPV4_DEVCONF_MEDIUM_ID,
+ IPV4_DEVCONF_NOXFRM,
+ IPV4_DEVCONF_NOPOLICY,
+ IPV4_DEVCONF_FORCE_IGMP_VERSION,
+ IPV4_DEVCONF_ARP_ANNOUNCE,
+ IPV4_DEVCONF_ARP_IGNORE,
+ IPV4_DEVCONF_PROMOTE_SECONDARIES,
+ IPV4_DEVCONF_ARP_ACCEPT,
+ IPV4_DEVCONF_ARP_NOTIFY,
+ IPV4_DEVCONF_ACCEPT_LOCAL,
+ IPV4_DEVCONF_SRC_VMARK,
+ IPV4_DEVCONF_PROXY_ARP_PVLAN,
+ __IPV4_DEVCONF_MAX
+};
+
struct ipv4_devconf {
void *sysctl;
- int data[__NET_IPV4_CONF_MAX - 1];
- DECLARE_BITMAP(state, __NET_IPV4_CONF_MAX - 1);
+ int data[__IPV4_DEVCONF_MAX - 1];
+ DECLARE_BITMAP(state, __IPV4_DEVCONF_MAX - 1);
};
struct in_device {
@@ -40,7 +70,7 @@
struct rcu_head rcu_head;
};
-#define IPV4_DEVCONF(cnf, attr) ((cnf).data[NET_IPV4_CONF_ ## attr - 1])
+#define IPV4_DEVCONF(cnf, attr) ((cnf).data[IPV4_DEVCONF_ ## attr - 1])
#define IPV4_DEVCONF_ALL(net, attr) \
IPV4_DEVCONF((*(net)->ipv4.devconf_all), attr)
@@ -60,13 +90,13 @@
static inline void ipv4_devconf_setall(struct in_device *in_dev)
{
- bitmap_fill(in_dev->cnf.state, __NET_IPV4_CONF_MAX - 1);
+ bitmap_fill(in_dev->cnf.state, __IPV4_DEVCONF_MAX - 1);
}
#define IN_DEV_CONF_GET(in_dev, attr) \
- ipv4_devconf_get((in_dev), NET_IPV4_CONF_ ## attr)
+ ipv4_devconf_get((in_dev), IPV4_DEVCONF_ ## attr)
#define IN_DEV_CONF_SET(in_dev, attr, val) \
- ipv4_devconf_set((in_dev), NET_IPV4_CONF_ ## attr, (val))
+ ipv4_devconf_set((in_dev), IPV4_DEVCONF_ ## attr, (val))
#define IN_DEV_ANDCONF(in_dev, attr) \
(IPV4_DEVCONF_ALL(dev_net(in_dev->dev), attr) && \