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#ifndef _LINUX_INETDEVICE_H
#define _LINUX_INETDEVICE_H
#ifdef __KERNEL__
#include <linux/bitmap.h>
#include <linux/if.h>
#include <linux/netdevice.h>
#include <linux/rcupdate.h>
#include <linux/timer.h>
#include <linux/sysctl.h>
#include <linux/rtnetlink.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[__IPV4_DEVCONF_MAX - 1];
DECLARE_BITMAP(state, __IPV4_DEVCONF_MAX - 1);
};
struct in_device {
struct net_device *dev;
atomic_t refcnt;
int dead;
struct in_ifaddr *ifa_list; /* IP ifaddr chain */
struct ip_mc_list __rcu *mc_list; /* IP multicast filter chain */
int mc_count; /* Number of installed mcasts */
spinlock_t mc_tomb_lock;
struct ip_mc_list *mc_tomb;
unsigned long mr_v1_seen;
unsigned long mr_v2_seen;
unsigned long mr_maxdelay;
unsigned char mr_qrv;
unsigned char mr_gq_running;
unsigned char mr_ifc_count;
struct timer_list mr_gq_timer; /* general query timer */
struct timer_list mr_ifc_timer; /* interface change timer */
struct neigh_parms *arp_parms;
struct ipv4_devconf cnf;
struct rcu_head rcu_head;
};
#define IPV4_DEVCONF(cnf, attr) ((cnf).data[IPV4_DEVCONF_ ## attr - 1])
#define IPV4_DEVCONF_ALL(net, attr) \
IPV4_DEVCONF((*(net)->ipv4.devconf_all), attr)
static inline int ipv4_devconf_get(struct in_device *in_dev, int index)
{
index--;
return in_dev->cnf.data[index];
}
static inline void ipv4_devconf_set(struct in_device *in_dev, int index,
int val)
{
index--;
set_bit(index, in_dev->cnf.state);
in_dev->cnf.data[index] = val;
}
static inline void ipv4_devconf_setall(struct in_device *in_dev)
{
bitmap_fill(in_dev->cnf.state, __IPV4_DEVCONF_MAX - 1);
}
#define IN_DEV_CONF_GET(in_dev, attr) \
ipv4_devconf_get((in_dev), IPV4_DEVCONF_ ## attr)
#define IN_DEV_CONF_SET(in_dev, 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) && \
IN_DEV_CONF_GET((in_dev), attr))
#define IN_DEV_ORCONF(in_dev, attr) \
(IPV4_DEVCONF_ALL(dev_net(in_dev->dev), attr) || \
IN_DEV_CONF_GET((in_dev), attr))
#define IN_DEV_MAXCONF(in_dev, attr) \
(max(IPV4_DEVCONF_ALL(dev_net(in_dev->dev), attr), \
IN_DEV_CONF_GET((in_dev), attr)))
#define IN_DEV_FORWARD(in_dev) IN_DEV_CONF_GET((in_dev), FORWARDING)
#define IN_DEV_MFORWARD(in_dev) IN_DEV_ANDCONF((in_dev), MC_FORWARDING)
#define IN_DEV_RPFILTER(in_dev) IN_DEV_MAXCONF((in_dev), RP_FILTER)
#define IN_DEV_SRC_VMARK(in_dev) IN_DEV_ORCONF((in_dev), SRC_VMARK)
#define IN_DEV_SOURCE_ROUTE(in_dev) IN_DEV_ANDCONF((in_dev), \
ACCEPT_SOURCE_ROUTE)
#define IN_DEV_ACCEPT_LOCAL(in_dev) IN_DEV_ORCONF((in_dev), ACCEPT_LOCAL)
#define IN_DEV_BOOTP_RELAY(in_dev) IN_DEV_ANDCONF((in_dev), BOOTP_RELAY)
#define IN_DEV_LOG_MARTIANS(in_dev) IN_DEV_ORCONF((in_dev), LOG_MARTIANS)
#define IN_DEV_PROXY_ARP(in_dev) IN_DEV_ORCONF((in_dev), PROXY_ARP)
#define IN_DEV_PROXY_ARP_PVLAN(in_dev) IN_DEV_CONF_GET(in_dev, PROXY_ARP_PVLAN)
#define IN_DEV_SHARED_MEDIA(in_dev) IN_DEV_ORCONF((in_dev), SHARED_MEDIA)
#define IN_DEV_TX_REDIRECTS(in_dev) IN_DEV_ORCONF((in_dev), SEND_REDIRECTS)
#define IN_DEV_SEC_REDIRECTS(in_dev) IN_DEV_ORCONF((in_dev), \
SECURE_REDIRECTS)
#define IN_DEV_IDTAG(in_dev) IN_DEV_CONF_GET(in_dev, TAG)
#define IN_DEV_MEDIUM_ID(in_dev) IN_DEV_CONF_GET(in_dev, MEDIUM_ID)
#define IN_DEV_PROMOTE_SECONDARIES(in_dev) \
IN_DEV_ORCONF((in_dev), \
PROMOTE_SECONDARIES)
#define IN_DEV_RX_REDIRECTS(in_dev) \
((IN_DEV_FORWARD(in_dev) && \
IN_DEV_ANDCONF((in_dev), ACCEPT_REDIRECTS)) \
|| (!IN_DEV_FORWARD(in_dev) && \
IN_DEV_ORCONF((in_dev), ACCEPT_REDIRECTS)))
#define IN_DEV_ARPFILTER(in_dev) IN_DEV_ORCONF((in_dev), ARPFILTER)
#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)
struct in_ifaddr {
struct in_ifaddr *ifa_next;
struct in_device *ifa_dev;
struct rcu_head rcu_head;
__be32 ifa_local;
__be32 ifa_address;
__be32 ifa_mask;
__be32 ifa_broadcast;
unsigned char ifa_scope;
unsigned char ifa_flags;
unsigned char ifa_prefixlen;
char ifa_label[IFNAMSIZ];
};
extern int register_inetaddr_notifier(struct notifier_block *nb);
extern int unregister_inetaddr_notifier(struct notifier_block *nb);
extern struct net_device *__ip_dev_find(struct net *net, __be32 addr, bool devref);
static inline struct net_device *ip_dev_find(struct net *net, __be32 addr)
{
return __ip_dev_find(net, addr, true);
}
extern int inet_addr_onlink(struct in_device *in_dev, __be32 a, __be32 b);
extern int devinet_ioctl(struct net *net, unsigned int cmd, void __user *);
extern void devinet_init(void);
extern struct in_device *inetdev_by_index(struct net *, int);
extern __be32 inet_select_addr(const struct net_device *dev, __be32 dst, int scope);
extern __be32 inet_confirm_addr(struct in_device *in_dev, __be32 dst, __be32 local, int scope);
extern struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, __be32 prefix, __be32 mask);
static __inline__ int inet_ifa_match(__be32 addr, struct in_ifaddr *ifa)
{
return !((addr^ifa->ifa_address)&ifa->ifa_mask);
}
/*
* Check if a mask is acceptable.
*/
static __inline__ int bad_mask(__be32 mask, __be32 addr)
{
__u32 hmask;
if (addr & (mask = ~mask))
return 1;
hmask = ntohl(mask);
if (hmask & (hmask+1))
return 1;
return 0;
}
#define for_primary_ifa(in_dev) { struct in_ifaddr *ifa; \
for (ifa = (in_dev)->ifa_list; ifa && !(ifa->ifa_flags&IFA_F_SECONDARY); ifa = ifa->ifa_next)
#define for_ifa(in_dev) { struct in_ifaddr *ifa; \
for (ifa = (in_dev)->ifa_list; ifa; ifa = ifa->ifa_next)
#define endfor_ifa(in_dev) }
static inline struct in_device *__in_dev_get_rcu(const struct net_device *dev)
{
return rcu_dereference(dev->ip_ptr);
}
static inline struct in_device *in_dev_get(const struct net_device *dev)
{
struct in_device *in_dev;
rcu_read_lock();
in_dev = __in_dev_get_rcu(dev);
if (in_dev)
atomic_inc(&in_dev->refcnt);
rcu_read_unlock();
return in_dev;
}
static inline struct in_device *__in_dev_get_rtnl(const struct net_device *dev)
{
return rcu_dereference_check(dev->ip_ptr, lockdep_rtnl_is_held());
}
extern void in_dev_finish_destroy(struct in_device *idev);
static inline void in_dev_put(struct in_device *idev)
{
if (atomic_dec_and_test(&idev->refcnt))
in_dev_finish_destroy(idev);
}
#define __in_dev_put(idev) atomic_dec(&(idev)->refcnt)
#define in_dev_hold(idev) atomic_inc(&(idev)->refcnt)
#endif /* __KERNEL__ */
static __inline__ __be32 inet_make_mask(int logmask)
{
if (logmask)
return htonl(~((1<<(32-logmask))-1));
return 0;
}
static __inline__ int inet_mask_len(__be32 mask)
{
__u32 hmask = ntohl(mask);
if (!hmask)
return 0;
return 32 - ffz(~hmask);
}
#endif /* _LINUX_INETDEVICE_H */
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