1 #ifndef _LINUX_INETDEVICE_H
2 #define _LINUX_INETDEVICE_H
12 int accept_source_route;
25 extern struct ipv4_devconf ipv4_devconf;
29 struct net_device *dev;
33 struct in_ifaddr *ifa_list; /* IP ifaddr chain */
34 struct ip_mc_list *mc_list; /* IP multicast filter chain */
35 unsigned long mr_v1_seen;
36 struct neigh_parms *arp_parms;
37 struct ipv4_devconf cnf;
40 #define IN_DEV_FORWARD(in_dev) ((in_dev)->cnf.forwarding)
41 #define IN_DEV_MFORWARD(in_dev) (ipv4_devconf.mc_forwarding && (in_dev)->cnf.mc_forwarding)
42 #define IN_DEV_RPFILTER(in_dev) (ipv4_devconf.rp_filter && (in_dev)->cnf.rp_filter)
43 #define IN_DEV_SOURCE_ROUTE(in_dev) (ipv4_devconf.accept_source_route && (in_dev)->cnf.accept_source_route)
44 #define IN_DEV_BOOTP_RELAY(in_dev) (ipv4_devconf.bootp_relay && (in_dev)->cnf.bootp_relay)
46 #define IN_DEV_LOG_MARTIANS(in_dev) (ipv4_devconf.log_martians || (in_dev)->cnf.log_martians)
47 #define IN_DEV_PROXY_ARP(in_dev) (ipv4_devconf.proxy_arp || (in_dev)->cnf.proxy_arp)
48 #define IN_DEV_SHARED_MEDIA(in_dev) (ipv4_devconf.shared_media || (in_dev)->cnf.shared_media)
49 #define IN_DEV_TX_REDIRECTS(in_dev) (ipv4_devconf.send_redirects || (in_dev)->cnf.send_redirects)
50 #define IN_DEV_SEC_REDIRECTS(in_dev) (ipv4_devconf.secure_redirects || (in_dev)->cnf.secure_redirects)
51 #define IN_DEV_IDTAG(in_dev) ((in_dev)->cnf.tag)
52 #define IN_DEV_MEDIUM_ID(in_dev) ((in_dev)->cnf.medium_id)
54 #define IN_DEV_RX_REDIRECTS(in_dev) \
55 ((IN_DEV_FORWARD(in_dev) && \
56 (ipv4_devconf.accept_redirects && (in_dev)->cnf.accept_redirects)) \
57 || (!IN_DEV_FORWARD(in_dev) && \
58 (ipv4_devconf.accept_redirects || (in_dev)->cnf.accept_redirects)))
60 #define IN_DEV_ARPFILTER(in_dev) (ipv4_devconf.arp_filter || (in_dev)->cnf.arp_filter)
64 struct in_ifaddr *ifa_next;
65 struct in_device *ifa_dev;
71 unsigned char ifa_scope;
72 unsigned char ifa_flags;
73 unsigned char ifa_prefixlen;
74 char ifa_label[IFNAMSIZ];
77 extern int register_inetaddr_notifier(struct notifier_block *nb);
78 extern int unregister_inetaddr_notifier(struct notifier_block *nb);
80 extern struct net_device *ip_dev_find(u32 addr);
81 extern int inet_addr_onlink(struct in_device *in_dev, u32 a, u32 b);
82 extern int devinet_ioctl(unsigned int cmd, void *);
83 extern void devinet_init(void);
84 extern struct in_device *inetdev_init(struct net_device *dev);
85 extern struct in_device *inetdev_by_index(int);
86 extern u32 inet_select_addr(const struct net_device *dev, u32 dst, int scope);
87 extern struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, u32 prefix, u32 mask);
88 extern void inet_forward_change(void);
90 static __inline__ int inet_ifa_match(u32 addr, struct in_ifaddr *ifa)
92 return !((addr^ifa->ifa_address)&ifa->ifa_mask);
96 * Check if a mask is acceptable.
99 static __inline__ int bad_mask(u32 mask, u32 addr)
101 if (addr & (mask = ~mask))
109 #define for_primary_ifa(in_dev) { struct in_ifaddr *ifa; \
110 for (ifa = (in_dev)->ifa_list; ifa && !(ifa->ifa_flags&IFA_F_SECONDARY); ifa = ifa->ifa_next)
112 #define for_ifa(in_dev) { struct in_ifaddr *ifa; \
113 for (ifa = (in_dev)->ifa_list; ifa; ifa = ifa->ifa_next)
116 #define endfor_ifa(in_dev) }
118 extern rwlock_t inetdev_lock;
121 static __inline__ struct in_device *
122 in_dev_get(const struct net_device *dev)
124 struct in_device *in_dev;
126 read_lock(&inetdev_lock);
127 in_dev = dev->ip_ptr;
129 atomic_inc(&in_dev->refcnt);
130 read_unlock(&inetdev_lock);
134 static __inline__ struct in_device *
135 __in_dev_get(const struct net_device *dev)
137 return (struct in_device*)dev->ip_ptr;
140 extern void in_dev_finish_destroy(struct in_device *idev);
142 static __inline__ void
143 in_dev_put(struct in_device *idev)
145 if (atomic_dec_and_test(&idev->refcnt))
146 in_dev_finish_destroy(idev);
149 #define __in_dev_put(idev) atomic_dec(&(idev)->refcnt)
150 #define in_dev_hold(idev) atomic_inc(&(idev)->refcnt)
152 #endif /* __KERNEL__ */
154 static __inline__ __u32 inet_make_mask(int logmask)
157 return htonl(~((1<<(32-logmask))-1));
161 static __inline__ int inet_mask_len(__u32 mask)
163 if (!(mask = ntohl(mask)))
165 return 32 - ffz(~mask);
169 #endif /* _LINUX_INETDEVICE_H */