1 #ifndef _LINUX_INETDEVICE_H
2 #define _LINUX_INETDEVICE_H
7 #include <linux/netdevice.h>
8 #include <linux/rcupdate.h>
9 #include <linux/timer.h>
17 int accept_source_route;
31 int force_igmp_version;
32 int promote_secondaries;
36 extern struct ipv4_devconf ipv4_devconf;
40 struct net_device *dev;
43 struct in_ifaddr *ifa_list; /* IP ifaddr chain */
44 rwlock_t mc_list_lock;
45 struct ip_mc_list *mc_list; /* IP multicast filter chain */
46 spinlock_t mc_tomb_lock;
47 struct ip_mc_list *mc_tomb;
48 unsigned long mr_v1_seen;
49 unsigned long mr_v2_seen;
50 unsigned long mr_maxdelay;
52 unsigned char mr_gq_running;
53 unsigned char mr_ifc_count;
54 struct timer_list mr_gq_timer; /* general query timer */
55 struct timer_list mr_ifc_timer; /* interface change timer */
57 struct neigh_parms *arp_parms;
58 struct ipv4_devconf cnf;
59 struct rcu_head rcu_head;
62 #define IN_DEV_FORWARD(in_dev) ((in_dev)->cnf.forwarding)
63 #define IN_DEV_MFORWARD(in_dev) (ipv4_devconf.mc_forwarding && (in_dev)->cnf.mc_forwarding)
64 #define IN_DEV_RPFILTER(in_dev) (ipv4_devconf.rp_filter && (in_dev)->cnf.rp_filter)
65 #define IN_DEV_SOURCE_ROUTE(in_dev) (ipv4_devconf.accept_source_route && (in_dev)->cnf.accept_source_route)
66 #define IN_DEV_BOOTP_RELAY(in_dev) (ipv4_devconf.bootp_relay && (in_dev)->cnf.bootp_relay)
68 #define IN_DEV_LOG_MARTIANS(in_dev) (ipv4_devconf.log_martians || (in_dev)->cnf.log_martians)
69 #define IN_DEV_PROXY_ARP(in_dev) (ipv4_devconf.proxy_arp || (in_dev)->cnf.proxy_arp)
70 #define IN_DEV_SHARED_MEDIA(in_dev) (ipv4_devconf.shared_media || (in_dev)->cnf.shared_media)
71 #define IN_DEV_TX_REDIRECTS(in_dev) (ipv4_devconf.send_redirects || (in_dev)->cnf.send_redirects)
72 #define IN_DEV_SEC_REDIRECTS(in_dev) (ipv4_devconf.secure_redirects || (in_dev)->cnf.secure_redirects)
73 #define IN_DEV_IDTAG(in_dev) ((in_dev)->cnf.tag)
74 #define IN_DEV_MEDIUM_ID(in_dev) ((in_dev)->cnf.medium_id)
75 #define IN_DEV_PROMOTE_SECONDARIES(in_dev) (ipv4_devconf.promote_secondaries || (in_dev)->cnf.promote_secondaries)
77 #define IN_DEV_RX_REDIRECTS(in_dev) \
78 ((IN_DEV_FORWARD(in_dev) && \
79 (ipv4_devconf.accept_redirects && (in_dev)->cnf.accept_redirects)) \
80 || (!IN_DEV_FORWARD(in_dev) && \
81 (ipv4_devconf.accept_redirects || (in_dev)->cnf.accept_redirects)))
83 #define IN_DEV_ARPFILTER(in_dev) (ipv4_devconf.arp_filter || (in_dev)->cnf.arp_filter)
84 #define IN_DEV_ARP_ANNOUNCE(in_dev) (max(ipv4_devconf.arp_announce, (in_dev)->cnf.arp_announce))
85 #define IN_DEV_ARP_IGNORE(in_dev) (max(ipv4_devconf.arp_ignore, (in_dev)->cnf.arp_ignore))
89 struct in_ifaddr *ifa_next;
90 struct in_device *ifa_dev;
91 struct rcu_head rcu_head;
97 unsigned char ifa_scope;
98 unsigned char ifa_flags;
99 unsigned char ifa_prefixlen;
100 char ifa_label[IFNAMSIZ];
103 extern int register_inetaddr_notifier(struct notifier_block *nb);
104 extern int unregister_inetaddr_notifier(struct notifier_block *nb);
106 extern struct net_device *ip_dev_find(u32 addr);
107 extern int inet_addr_onlink(struct in_device *in_dev, u32 a, u32 b);
108 extern int devinet_ioctl(unsigned int cmd, void __user *);
109 extern void devinet_init(void);
110 extern struct in_device *inetdev_init(struct net_device *dev);
111 extern struct in_device *inetdev_by_index(int);
112 extern u32 inet_select_addr(const struct net_device *dev, u32 dst, int scope);
113 extern u32 inet_confirm_addr(const struct net_device *dev, u32 dst, u32 local, int scope);
114 extern struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, u32 prefix, u32 mask);
115 extern void inet_forward_change(void);
117 static __inline__ int inet_ifa_match(u32 addr, struct in_ifaddr *ifa)
119 return !((addr^ifa->ifa_address)&ifa->ifa_mask);
123 * Check if a mask is acceptable.
126 static __inline__ int bad_mask(u32 mask, u32 addr)
128 if (addr & (mask = ~mask))
136 #define for_primary_ifa(in_dev) { struct in_ifaddr *ifa; \
137 for (ifa = (in_dev)->ifa_list; ifa && !(ifa->ifa_flags&IFA_F_SECONDARY); ifa = ifa->ifa_next)
139 #define for_ifa(in_dev) { struct in_ifaddr *ifa; \
140 for (ifa = (in_dev)->ifa_list; ifa; ifa = ifa->ifa_next)
143 #define endfor_ifa(in_dev) }
145 static inline struct in_device *__in_dev_get_rcu(const struct net_device *dev)
147 struct in_device *in_dev = dev->ip_ptr;
149 in_dev = rcu_dereference(in_dev);
153 static __inline__ struct in_device *
154 in_dev_get(const struct net_device *dev)
156 struct in_device *in_dev;
159 in_dev = __in_dev_get_rcu(dev);
161 atomic_inc(&in_dev->refcnt);
166 static __inline__ struct in_device *
167 __in_dev_get_rtnl(const struct net_device *dev)
169 return (struct in_device*)dev->ip_ptr;
172 extern void in_dev_finish_destroy(struct in_device *idev);
174 static inline void in_dev_put(struct in_device *idev)
176 if (atomic_dec_and_test(&idev->refcnt))
177 in_dev_finish_destroy(idev);
180 #define __in_dev_put(idev) atomic_dec(&(idev)->refcnt)
181 #define in_dev_hold(idev) atomic_inc(&(idev)->refcnt)
183 #endif /* __KERNEL__ */
185 static __inline__ __u32 inet_make_mask(int logmask)
188 return htonl(~((1<<(32-logmask))-1));
192 static __inline__ int inet_mask_len(__u32 mask)
194 if (!(mask = ntohl(mask)))
196 return 32 - ffz(~mask);
200 #endif /* _LINUX_INETDEVICE_H */