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;
32 int force_igmp_version;
33 int promote_secondaries;
37 extern struct ipv4_devconf ipv4_devconf;
41 struct net_device *dev;
44 struct in_ifaddr *ifa_list; /* IP ifaddr chain */
45 rwlock_t mc_list_lock;
46 struct ip_mc_list *mc_list; /* IP multicast filter chain */
47 spinlock_t mc_tomb_lock;
48 struct ip_mc_list *mc_tomb;
49 unsigned long mr_v1_seen;
50 unsigned long mr_v2_seen;
51 unsigned long mr_maxdelay;
53 unsigned char mr_gq_running;
54 unsigned char mr_ifc_count;
55 struct timer_list mr_gq_timer; /* general query timer */
56 struct timer_list mr_ifc_timer; /* interface change timer */
58 struct neigh_parms *arp_parms;
59 struct ipv4_devconf cnf;
60 struct rcu_head rcu_head;
63 #define IN_DEV_FORWARD(in_dev) ((in_dev)->cnf.forwarding)
64 #define IN_DEV_MFORWARD(in_dev) (ipv4_devconf.mc_forwarding && (in_dev)->cnf.mc_forwarding)
65 #define IN_DEV_RPFILTER(in_dev) (ipv4_devconf.rp_filter && (in_dev)->cnf.rp_filter)
66 #define IN_DEV_SOURCE_ROUTE(in_dev) (ipv4_devconf.accept_source_route && (in_dev)->cnf.accept_source_route)
67 #define IN_DEV_BOOTP_RELAY(in_dev) (ipv4_devconf.bootp_relay && (in_dev)->cnf.bootp_relay)
69 #define IN_DEV_LOG_MARTIANS(in_dev) (ipv4_devconf.log_martians || (in_dev)->cnf.log_martians)
70 #define IN_DEV_PROXY_ARP(in_dev) (ipv4_devconf.proxy_arp || (in_dev)->cnf.proxy_arp)
71 #define IN_DEV_SHARED_MEDIA(in_dev) (ipv4_devconf.shared_media || (in_dev)->cnf.shared_media)
72 #define IN_DEV_TX_REDIRECTS(in_dev) (ipv4_devconf.send_redirects || (in_dev)->cnf.send_redirects)
73 #define IN_DEV_SEC_REDIRECTS(in_dev) (ipv4_devconf.secure_redirects || (in_dev)->cnf.secure_redirects)
74 #define IN_DEV_IDTAG(in_dev) ((in_dev)->cnf.tag)
75 #define IN_DEV_MEDIUM_ID(in_dev) ((in_dev)->cnf.medium_id)
76 #define IN_DEV_PROMOTE_SECONDARIES(in_dev) (ipv4_devconf.promote_secondaries || (in_dev)->cnf.promote_secondaries)
78 #define IN_DEV_RX_REDIRECTS(in_dev) \
79 ((IN_DEV_FORWARD(in_dev) && \
80 (ipv4_devconf.accept_redirects && (in_dev)->cnf.accept_redirects)) \
81 || (!IN_DEV_FORWARD(in_dev) && \
82 (ipv4_devconf.accept_redirects || (in_dev)->cnf.accept_redirects)))
84 #define IN_DEV_ARPFILTER(in_dev) (ipv4_devconf.arp_filter || (in_dev)->cnf.arp_filter)
85 #define IN_DEV_ARP_ANNOUNCE(in_dev) (max(ipv4_devconf.arp_announce, (in_dev)->cnf.arp_announce))
86 #define IN_DEV_ARP_IGNORE(in_dev) (max(ipv4_devconf.arp_ignore, (in_dev)->cnf.arp_ignore))
90 struct in_ifaddr *ifa_next;
91 struct in_device *ifa_dev;
92 struct rcu_head rcu_head;
98 unsigned char ifa_scope;
99 unsigned char ifa_flags;
100 unsigned char ifa_prefixlen;
101 char ifa_label[IFNAMSIZ];
104 extern int register_inetaddr_notifier(struct notifier_block *nb);
105 extern int unregister_inetaddr_notifier(struct notifier_block *nb);
107 extern struct net_device *ip_dev_find(__be32 addr);
108 extern int inet_addr_onlink(struct in_device *in_dev, __be32 a, __be32 b);
109 extern int devinet_ioctl(unsigned int cmd, void __user *);
110 extern void devinet_init(void);
111 extern struct in_device *inetdev_init(struct net_device *dev);
112 extern struct in_device *inetdev_by_index(int);
113 extern __be32 inet_select_addr(const struct net_device *dev, __be32 dst, int scope);
114 extern __be32 inet_confirm_addr(const struct net_device *dev, __be32 dst, __be32 local, int scope);
115 extern struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, __be32 prefix, __be32 mask);
116 extern void inet_forward_change(void);
118 static __inline__ int inet_ifa_match(__be32 addr, struct in_ifaddr *ifa)
120 return !((addr^ifa->ifa_address)&ifa->ifa_mask);
124 * Check if a mask is acceptable.
127 static __inline__ int bad_mask(__be32 mask, __be32 addr)
130 if (addr & (mask = ~mask))
133 if (hmask & (hmask+1))
138 #define for_primary_ifa(in_dev) { struct in_ifaddr *ifa; \
139 for (ifa = (in_dev)->ifa_list; ifa && !(ifa->ifa_flags&IFA_F_SECONDARY); ifa = ifa->ifa_next)
141 #define for_ifa(in_dev) { struct in_ifaddr *ifa; \
142 for (ifa = (in_dev)->ifa_list; ifa; ifa = ifa->ifa_next)
145 #define endfor_ifa(in_dev) }
147 static inline struct in_device *__in_dev_get_rcu(const struct net_device *dev)
149 struct in_device *in_dev = dev->ip_ptr;
151 in_dev = rcu_dereference(in_dev);
155 static __inline__ struct in_device *
156 in_dev_get(const struct net_device *dev)
158 struct in_device *in_dev;
161 in_dev = __in_dev_get_rcu(dev);
163 atomic_inc(&in_dev->refcnt);
168 static __inline__ struct in_device *
169 __in_dev_get_rtnl(const struct net_device *dev)
171 return (struct in_device*)dev->ip_ptr;
174 extern void in_dev_finish_destroy(struct in_device *idev);
176 static inline void in_dev_put(struct in_device *idev)
178 if (atomic_dec_and_test(&idev->refcnt))
179 in_dev_finish_destroy(idev);
182 #define __in_dev_put(idev) atomic_dec(&(idev)->refcnt)
183 #define in_dev_hold(idev) atomic_inc(&(idev)->refcnt)
185 #endif /* __KERNEL__ */
187 static __inline__ __be32 inet_make_mask(int logmask)
190 return htonl(~((1<<(32-logmask))-1));
194 static __inline__ int inet_mask_len(__be32 mask)
196 __u32 hmask = ntohl(mask);
199 return 32 - ffz(~hmask);
203 #endif /* _LINUX_INETDEVICE_H */