1 #ifndef _LINUX_INETDEVICE_H
2 #define _LINUX_INETDEVICE_H
12 int accept_source_route;
24 int force_igmp_version;
28 extern struct ipv4_devconf ipv4_devconf;
32 struct net_device *dev;
36 struct in_ifaddr *ifa_list; /* IP ifaddr chain */
37 struct ip_mc_list *mc_list; /* IP multicast filter chain */
38 rwlock_t mc_lock; /* for mc_tomb */
39 struct ip_mc_list *mc_tomb;
40 unsigned long mr_v1_seen;
41 unsigned long mr_v2_seen;
42 unsigned long mr_maxdelay;
44 unsigned char mr_gq_running;
45 unsigned char mr_ifc_count;
46 struct timer_list mr_gq_timer; /* general query timer */
47 struct timer_list mr_ifc_timer; /* interface change timer */
49 struct neigh_parms *arp_parms;
50 struct ipv4_devconf cnf;
53 #define IN_DEV_FORWARD(in_dev) ((in_dev)->cnf.forwarding)
54 #define IN_DEV_MFORWARD(in_dev) (ipv4_devconf.mc_forwarding && (in_dev)->cnf.mc_forwarding)
55 #define IN_DEV_RPFILTER(in_dev) (ipv4_devconf.rp_filter && (in_dev)->cnf.rp_filter)
56 #define IN_DEV_SOURCE_ROUTE(in_dev) (ipv4_devconf.accept_source_route && (in_dev)->cnf.accept_source_route)
57 #define IN_DEV_BOOTP_RELAY(in_dev) (ipv4_devconf.bootp_relay && (in_dev)->cnf.bootp_relay)
59 #define IN_DEV_LOG_MARTIANS(in_dev) (ipv4_devconf.log_martians || (in_dev)->cnf.log_martians)
60 #define IN_DEV_PROXY_ARP(in_dev) (ipv4_devconf.proxy_arp || (in_dev)->cnf.proxy_arp)
61 #define IN_DEV_SHARED_MEDIA(in_dev) (ipv4_devconf.shared_media || (in_dev)->cnf.shared_media)
62 #define IN_DEV_TX_REDIRECTS(in_dev) (ipv4_devconf.send_redirects || (in_dev)->cnf.send_redirects)
63 #define IN_DEV_SEC_REDIRECTS(in_dev) (ipv4_devconf.secure_redirects || (in_dev)->cnf.secure_redirects)
64 #define IN_DEV_IDTAG(in_dev) ((in_dev)->cnf.tag)
65 #define IN_DEV_MEDIUM_ID(in_dev) ((in_dev)->cnf.medium_id)
67 #define IN_DEV_RX_REDIRECTS(in_dev) \
68 ((IN_DEV_FORWARD(in_dev) && \
69 (ipv4_devconf.accept_redirects && (in_dev)->cnf.accept_redirects)) \
70 || (!IN_DEV_FORWARD(in_dev) && \
71 (ipv4_devconf.accept_redirects || (in_dev)->cnf.accept_redirects)))
73 #define IN_DEV_ARPFILTER(in_dev) (ipv4_devconf.arp_filter || (in_dev)->cnf.arp_filter)
77 struct in_ifaddr *ifa_next;
78 struct in_device *ifa_dev;
84 unsigned char ifa_scope;
85 unsigned char ifa_flags;
86 unsigned char ifa_prefixlen;
87 char ifa_label[IFNAMSIZ];
90 extern int register_inetaddr_notifier(struct notifier_block *nb);
91 extern int unregister_inetaddr_notifier(struct notifier_block *nb);
93 extern struct net_device *ip_dev_find(u32 addr);
94 extern int inet_addr_onlink(struct in_device *in_dev, u32 a, u32 b);
95 extern int devinet_ioctl(unsigned int cmd, void *);
96 extern void devinet_init(void);
97 extern struct in_device *inetdev_init(struct net_device *dev);
98 extern struct in_device *inetdev_by_index(int);
99 extern u32 inet_select_addr(const struct net_device *dev, u32 dst, int scope);
100 extern struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, u32 prefix, u32 mask);
101 extern void inet_forward_change(void);
103 static __inline__ int inet_ifa_match(u32 addr, struct in_ifaddr *ifa)
105 return !((addr^ifa->ifa_address)&ifa->ifa_mask);
109 * Check if a mask is acceptable.
112 static __inline__ int bad_mask(u32 mask, u32 addr)
114 if (addr & (mask = ~mask))
122 #define for_primary_ifa(in_dev) { struct in_ifaddr *ifa; \
123 for (ifa = (in_dev)->ifa_list; ifa && !(ifa->ifa_flags&IFA_F_SECONDARY); ifa = ifa->ifa_next)
125 #define for_ifa(in_dev) { struct in_ifaddr *ifa; \
126 for (ifa = (in_dev)->ifa_list; ifa; ifa = ifa->ifa_next)
129 #define endfor_ifa(in_dev) }
131 extern rwlock_t inetdev_lock;
134 static __inline__ struct in_device *
135 in_dev_get(const struct net_device *dev)
137 struct in_device *in_dev;
139 read_lock(&inetdev_lock);
140 in_dev = dev->ip_ptr;
142 atomic_inc(&in_dev->refcnt);
143 read_unlock(&inetdev_lock);
147 static __inline__ struct in_device *
148 __in_dev_get(const struct net_device *dev)
150 return (struct in_device*)dev->ip_ptr;
153 extern void in_dev_finish_destroy(struct in_device *idev);
155 static __inline__ void
156 in_dev_put(struct in_device *idev)
158 if (atomic_dec_and_test(&idev->refcnt))
159 in_dev_finish_destroy(idev);
162 #define __in_dev_put(idev) atomic_dec(&(idev)->refcnt)
163 #define in_dev_hold(idev) atomic_inc(&(idev)->refcnt)
165 #endif /* __KERNEL__ */
167 static __inline__ __u32 inet_make_mask(int logmask)
170 return htonl(~((1<<(32-logmask))-1));
174 static __inline__ int inet_mask_len(__u32 mask)
176 if (!(mask = ntohl(mask)))
178 return 32 - ffz(~mask);
182 #endif /* _LINUX_INETDEVICE_H */