#ifndef _LINUX_INETDEVICE_H #define _LINUX_INETDEVICE_H #ifdef __KERNEL__ #include <linux/if.h> #include <linux/netdevice.h> #include <linux/rcupdate.h> #include <linux/timer.h> 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; int arp_filter; int arp_announce; int arp_ignore; int arp_accept; int medium_id; int no_xfrm; int no_policy; int force_igmp_version; int promote_secondaries; void *sysctl; }; extern struct ipv4_devconf ipv4_devconf; struct in_device { struct net_device *dev; atomic_t refcnt; int dead; struct in_ifaddr *ifa_list; /* IP ifaddr chain */ rwlock_t mc_list_lock; struct ip_mc_list *mc_list; /* IP multicast filter chain */ 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 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_MEDIUM_ID(in_dev) ((in_dev)->cnf.medium_id) #define IN_DEV_PROMOTE_SECONDARIES(in_dev) (ipv4_devconf.promote_secondaries || (in_dev)->cnf.promote_secondaries) #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))) #define IN_DEV_ARPFILTER(in_dev) (ipv4_devconf.arp_filter || (in_dev)->cnf.arp_filter) #define IN_DEV_ARP_ANNOUNCE(in_dev) (max(ipv4_devconf.arp_announce, (in_dev)->cnf.arp_announce)) #define IN_DEV_ARP_IGNORE(in_dev) (max(ipv4_devconf.arp_ignore, (in_dev)->cnf.arp_ignore)) struct in_ifaddr { struct in_ifaddr *ifa_next; struct in_device *ifa_dev; struct rcu_head rcu_head; 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 __user *); 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 u32 inet_confirm_addr(const struct net_device *dev, u32 dst, u32 local, int scope); extern struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, u32 prefix, u32 mask); extern void inet_forward_change(void); static __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. */ static __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) } static inline struct in_device *__in_dev_get_rcu(const struct net_device *dev) { struct in_device *in_dev = dev->ip_ptr; if (in_dev) in_dev = rcu_dereference(in_dev); return in_dev; } 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 (struct in_device*)dev->ip_ptr; } 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__ __u32 inet_make_mask(int logmask) { if (logmask) return htonl(~((1<<(32-logmask))-1)); return 0; } static __inline__ int inet_mask_len(__u32 mask) { if (!(mask = ntohl(mask))) return 0; return 32 - ffz(~mask); } #endif /* _LINUX_INETDEVICE_H */