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#ifndef _LINUX_INETDEVICE_H
#define _LINUX_INETDEVICE_H
#ifdef __KERNEL__
struct ipv4_devconf
{
int accept_redirects;
int send_redirects;
int secure_redirects;
int shared_media;
int accept_source_route;
int rp_filter;
int proxy_arp;
int bootp_relay;
int log_martians;
int forwarding;
int mc_forwarding;
int tag;
void *sysctl;
};
extern struct ipv4_devconf ipv4_devconf;
struct in_device
{
struct net_device *dev;
atomic_t refcnt;
rwlock_t lock;
int dead;
struct in_ifaddr *ifa_list; /* IP ifaddr chain */
struct ip_mc_list *mc_list; /* IP multicast filter chain */
unsigned long mr_v1_seen;
struct neigh_parms *arp_parms;
struct ipv4_devconf cnf;
};
#define IN_DEV_FORWARD(in_dev) ((in_dev)->cnf.forwarding)
#define IN_DEV_MFORWARD(in_dev) (ipv4_devconf.mc_forwarding && (in_dev)->cnf.mc_forwarding)
#define IN_DEV_RPFILTER(in_dev) (ipv4_devconf.rp_filter && (in_dev)->cnf.rp_filter)
#define IN_DEV_SOURCE_ROUTE(in_dev) (ipv4_devconf.accept_source_route && (in_dev)->cnf.accept_source_route)
#define IN_DEV_BOOTP_RELAY(in_dev) (ipv4_devconf.bootp_relay && (in_dev)->cnf.bootp_relay)
#define IN_DEV_LOG_MARTIANS(in_dev) (ipv4_devconf.log_martians || (in_dev)->cnf.log_martians)
#define IN_DEV_PROXY_ARP(in_dev) (ipv4_devconf.proxy_arp || (in_dev)->cnf.proxy_arp)
#define IN_DEV_SHARED_MEDIA(in_dev) (ipv4_devconf.shared_media || (in_dev)->cnf.shared_media)
#define IN_DEV_TX_REDIRECTS(in_dev) (ipv4_devconf.send_redirects || (in_dev)->cnf.send_redirects)
#define IN_DEV_SEC_REDIRECTS(in_dev) (ipv4_devconf.secure_redirects || (in_dev)->cnf.secure_redirects)
#define IN_DEV_IDTAG(in_dev) ((in_dev)->cnf.tag)
#define IN_DEV_RX_REDIRECTS(in_dev) \
((IN_DEV_FORWARD(in_dev) && \
(ipv4_devconf.accept_redirects && (in_dev)->cnf.accept_redirects)) \
|| (!IN_DEV_FORWARD(in_dev) && \
(ipv4_devconf.accept_redirects || (in_dev)->cnf.accept_redirects)))
struct in_ifaddr
{
struct in_ifaddr *ifa_next;
struct in_device *ifa_dev;
u32 ifa_local;
u32 ifa_address;
u32 ifa_mask;
u32 ifa_broadcast;
u32 ifa_anycast;
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(u32 addr);
extern int inet_addr_onlink(struct in_device *in_dev, u32 a, u32 b);
extern int devinet_ioctl(unsigned int cmd, void *);
extern void devinet_init(void);
extern struct in_device *inetdev_init(struct net_device *dev);
extern struct in_device *inetdev_by_index(int);
extern u32 inet_select_addr(const struct net_device *dev, u32 dst, int scope);
extern struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, u32 prefix, u32 mask);
extern void inet_forward_change(void);
extern __inline__ int inet_ifa_match(u32 addr, struct in_ifaddr *ifa)
{
return !((addr^ifa->ifa_address)&ifa->ifa_mask);
}
/*
* Check if a mask is acceptable.
*/
extern __inline__ int bad_mask(u32 mask, u32 addr)
{
if (addr & (mask = ~mask))
return 1;
mask = ntohl(mask);
if (mask & (mask+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) }
extern rwlock_t inetdev_lock;
extern __inline__ struct in_device *
in_dev_get(const struct net_device *dev)
{
struct in_device *in_dev;
read_lock(&inetdev_lock);
in_dev = dev->ip_ptr;
if (in_dev)
atomic_inc(&in_dev->refcnt);
read_unlock(&inetdev_lock);
return in_dev;
}
extern __inline__ struct in_device *
__in_dev_get(const struct net_device *dev)
{
return (struct in_device*)dev->ip_ptr;
}
extern void in_dev_finish_destroy(struct in_device *idev);
extern __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__ */
extern __inline__ __u32 inet_make_mask(int logmask)
{
if (logmask)
return htonl(~((1<<(32-logmask))-1));
return 0;
}
extern __inline__ int inet_mask_len(__u32 mask)
{
if (!(mask = ntohl(mask)))
return 0;
return 32 - ffz(~mask);
}
#endif /* _LINUX_INETDEVICE_H */
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