1 #ifndef _LINUX_INETDEVICE_H
2 #define _LINUX_INETDEVICE_H
6 #include <linux/rcupdate.h>
14 int accept_source_route;
28 int force_igmp_version;
32 extern struct ipv4_devconf ipv4_devconf;
36 struct net_device *dev;
39 struct in_ifaddr *ifa_list; /* IP ifaddr chain */
40 rwlock_t mc_list_lock;
41 struct ip_mc_list *mc_list; /* IP multicast filter chain */
42 spinlock_t mc_tomb_lock;
43 struct ip_mc_list *mc_tomb;
44 unsigned long mr_v1_seen;
45 unsigned long mr_v2_seen;
46 unsigned long mr_maxdelay;
48 unsigned char mr_gq_running;
49 unsigned char mr_ifc_count;
50 struct timer_list mr_gq_timer; /* general query timer */
51 struct timer_list mr_ifc_timer; /* interface change timer */
53 struct neigh_parms *arp_parms;
54 struct ipv4_devconf cnf;
55 struct rcu_head rcu_head;
58 #define IN_DEV_FORWARD(in_dev) ((in_dev)->cnf.forwarding)
59 #define IN_DEV_MFORWARD(in_dev) (ipv4_devconf.mc_forwarding && (in_dev)->cnf.mc_forwarding)
60 #define IN_DEV_RPFILTER(in_dev) (ipv4_devconf.rp_filter && (in_dev)->cnf.rp_filter)
61 #define IN_DEV_SOURCE_ROUTE(in_dev) (ipv4_devconf.accept_source_route && (in_dev)->cnf.accept_source_route)
62 #define IN_DEV_BOOTP_RELAY(in_dev) (ipv4_devconf.bootp_relay && (in_dev)->cnf.bootp_relay)
64 #define IN_DEV_LOG_MARTIANS(in_dev) (ipv4_devconf.log_martians || (in_dev)->cnf.log_martians)
65 #define IN_DEV_PROXY_ARP(in_dev) (ipv4_devconf.proxy_arp || (in_dev)->cnf.proxy_arp)
66 #define IN_DEV_SHARED_MEDIA(in_dev) (ipv4_devconf.shared_media || (in_dev)->cnf.shared_media)
67 #define IN_DEV_TX_REDIRECTS(in_dev) (ipv4_devconf.send_redirects || (in_dev)->cnf.send_redirects)
68 #define IN_DEV_SEC_REDIRECTS(in_dev) (ipv4_devconf.secure_redirects || (in_dev)->cnf.secure_redirects)
69 #define IN_DEV_IDTAG(in_dev) ((in_dev)->cnf.tag)
70 #define IN_DEV_MEDIUM_ID(in_dev) ((in_dev)->cnf.medium_id)
72 #define IN_DEV_RX_REDIRECTS(in_dev) \
73 ((IN_DEV_FORWARD(in_dev) && \
74 (ipv4_devconf.accept_redirects && (in_dev)->cnf.accept_redirects)) \
75 || (!IN_DEV_FORWARD(in_dev) && \
76 (ipv4_devconf.accept_redirects || (in_dev)->cnf.accept_redirects)))
78 #define IN_DEV_ARPFILTER(in_dev) (ipv4_devconf.arp_filter || (in_dev)->cnf.arp_filter)
79 #define IN_DEV_ARP_ANNOUNCE(in_dev) (max(ipv4_devconf.arp_announce, (in_dev)->cnf.arp_announce))
80 #define IN_DEV_ARP_IGNORE(in_dev) (max(ipv4_devconf.arp_ignore, (in_dev)->cnf.arp_ignore))
84 struct in_ifaddr *ifa_next;
85 struct in_device *ifa_dev;
86 struct rcu_head rcu_head;
92 unsigned char ifa_scope;
93 unsigned char ifa_flags;
94 unsigned char ifa_prefixlen;
95 char ifa_label[IFNAMSIZ];
98 extern int register_inetaddr_notifier(struct notifier_block *nb);
99 extern int unregister_inetaddr_notifier(struct notifier_block *nb);
101 extern struct net_device *ip_dev_find(u32 addr);
102 extern int inet_addr_onlink(struct in_device *in_dev, u32 a, u32 b);
103 extern int devinet_ioctl(unsigned int cmd, void __user *);
104 extern void devinet_init(void);
105 extern struct in_device *inetdev_init(struct net_device *dev);
106 extern struct in_device *inetdev_by_index(int);
107 extern u32 inet_select_addr(const struct net_device *dev, u32 dst, int scope);
108 extern u32 inet_confirm_addr(const struct net_device *dev, u32 dst, u32 local, int scope);
109 extern struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, u32 prefix, u32 mask);
110 extern void inet_forward_change(void);
112 static __inline__ int inet_ifa_match(u32 addr, struct in_ifaddr *ifa)
114 return !((addr^ifa->ifa_address)&ifa->ifa_mask);
118 * Check if a mask is acceptable.
121 static __inline__ int bad_mask(u32 mask, u32 addr)
123 if (addr & (mask = ~mask))
131 #define for_primary_ifa(in_dev) { struct in_ifaddr *ifa; \
132 for (ifa = (in_dev)->ifa_list; ifa && !(ifa->ifa_flags&IFA_F_SECONDARY); ifa = ifa->ifa_next)
134 #define for_ifa(in_dev) { struct in_ifaddr *ifa; \
135 for (ifa = (in_dev)->ifa_list; ifa; ifa = ifa->ifa_next)
138 #define endfor_ifa(in_dev) }
140 static __inline__ struct in_device *
141 in_dev_get(const struct net_device *dev)
143 struct in_device *in_dev;
146 in_dev = dev->ip_ptr;
148 atomic_inc(&in_dev->refcnt);
153 static __inline__ struct in_device *
154 __in_dev_get(const struct net_device *dev)
156 return (struct in_device*)dev->ip_ptr;
159 extern void in_dev_finish_destroy(struct in_device *idev);
161 static inline void in_dev_put(struct in_device *idev)
163 if (atomic_dec_and_test(&idev->refcnt))
164 in_dev_finish_destroy(idev);
167 #define __in_dev_put(idev) atomic_dec(&(idev)->refcnt)
168 #define in_dev_hold(idev) atomic_inc(&(idev)->refcnt)
170 #endif /* __KERNEL__ */
172 static __inline__ __u32 inet_make_mask(int logmask)
175 return htonl(~((1<<(32-logmask))-1));
179 static __inline__ int inet_mask_len(__u32 mask)
181 if (!(mask = ntohl(mask)))
183 return 32 - ffz(~mask);
187 #endif /* _LINUX_INETDEVICE_H */