1 #ifndef _LINUX_INETDEVICE_H
2 #define _LINUX_INETDEVICE_H
6 #include <linux/bitmap.h>
8 #include <linux/netdevice.h>
9 #include <linux/rcupdate.h>
10 #include <linux/timer.h>
15 int data[__NET_IPV4_CONF_MAX - 1];
16 DECLARE_BITMAP(state, __NET_IPV4_CONF_MAX - 1);
19 extern struct ipv4_devconf ipv4_devconf;
23 struct net_device *dev;
26 struct in_ifaddr *ifa_list; /* IP ifaddr chain */
27 rwlock_t mc_list_lock;
28 struct ip_mc_list *mc_list; /* IP multicast filter chain */
29 spinlock_t mc_tomb_lock;
30 struct ip_mc_list *mc_tomb;
31 unsigned long mr_v1_seen;
32 unsigned long mr_v2_seen;
33 unsigned long mr_maxdelay;
35 unsigned char mr_gq_running;
36 unsigned char mr_ifc_count;
37 struct timer_list mr_gq_timer; /* general query timer */
38 struct timer_list mr_ifc_timer; /* interface change timer */
40 struct neigh_parms *arp_parms;
41 struct ipv4_devconf cnf;
42 struct rcu_head rcu_head;
45 #define IPV4_DEVCONF(cnf, attr) ((cnf).data[NET_IPV4_CONF_ ## attr - 1])
46 #define IPV4_DEVCONF_ALL(attr) IPV4_DEVCONF(ipv4_devconf, attr)
48 static inline int ipv4_devconf_get(struct in_device *in_dev, int index)
51 return in_dev->cnf.data[index];
54 static inline void ipv4_devconf_set(struct in_device *in_dev, int index,
58 set_bit(index, in_dev->cnf.state);
59 in_dev->cnf.data[index] = val;
62 #define IN_DEV_CONF_GET(in_dev, attr) \
63 ipv4_devconf_get((in_dev), NET_IPV4_CONF_ ## attr)
64 #define IN_DEV_CONF_SET(in_dev, attr, val) \
65 ipv4_devconf_set((in_dev), NET_IPV4_CONF_ ## attr, (val))
67 #define IN_DEV_ANDCONF(in_dev, attr) \
68 (IPV4_DEVCONF_ALL(attr) && IN_DEV_CONF_GET((in_dev), attr))
69 #define IN_DEV_ORCONF(in_dev, attr) \
70 (IPV4_DEVCONF_ALL(attr) || IN_DEV_CONF_GET((in_dev), attr))
71 #define IN_DEV_MAXCONF(in_dev, attr) \
72 (max(IPV4_DEVCONF_ALL(attr), IN_DEV_CONF_GET((in_dev), attr)))
74 #define IN_DEV_FORWARD(in_dev) IN_DEV_CONF_GET((in_dev), FORWARDING)
75 #define IN_DEV_MFORWARD(in_dev) (IPV4_DEVCONF_ALL(MC_FORWARDING) && \
76 IPV4_DEVCONF((in_dev)->cnf, \
78 #define IN_DEV_RPFILTER(in_dev) IN_DEV_ANDCONF((in_dev), RP_FILTER)
79 #define IN_DEV_SOURCE_ROUTE(in_dev) IN_DEV_ANDCONF((in_dev), \
81 #define IN_DEV_BOOTP_RELAY(in_dev) IN_DEV_ANDCONF((in_dev), BOOTP_RELAY)
83 #define IN_DEV_LOG_MARTIANS(in_dev) IN_DEV_ORCONF((in_dev), LOG_MARTIANS)
84 #define IN_DEV_PROXY_ARP(in_dev) IN_DEV_ORCONF((in_dev), PROXY_ARP)
85 #define IN_DEV_SHARED_MEDIA(in_dev) IN_DEV_ORCONF((in_dev), SHARED_MEDIA)
86 #define IN_DEV_TX_REDIRECTS(in_dev) IN_DEV_ORCONF((in_dev), SEND_REDIRECTS)
87 #define IN_DEV_SEC_REDIRECTS(in_dev) IN_DEV_ORCONF((in_dev), \
89 #define IN_DEV_IDTAG(in_dev) IN_DEV_CONF_GET(in_dev, TAG)
90 #define IN_DEV_MEDIUM_ID(in_dev) IN_DEV_CONF_GET(in_dev, MEDIUM_ID)
91 #define IN_DEV_PROMOTE_SECONDARIES(in_dev) \
92 IN_DEV_ORCONF((in_dev), \
95 #define IN_DEV_RX_REDIRECTS(in_dev) \
96 ((IN_DEV_FORWARD(in_dev) && \
97 IN_DEV_ANDCONF((in_dev), ACCEPT_REDIRECTS)) \
98 || (!IN_DEV_FORWARD(in_dev) && \
99 IN_DEV_ORCONF((in_dev), ACCEPT_REDIRECTS)))
101 #define IN_DEV_ARPFILTER(in_dev) IN_DEV_ORCONF((in_dev), ARPFILTER)
102 #define IN_DEV_ARP_ANNOUNCE(in_dev) IN_DEV_MAXCONF((in_dev), ARP_ANNOUNCE)
103 #define IN_DEV_ARP_IGNORE(in_dev) IN_DEV_MAXCONF((in_dev), ARP_IGNORE)
107 struct in_ifaddr *ifa_next;
108 struct in_device *ifa_dev;
109 struct rcu_head rcu_head;
113 __be32 ifa_broadcast;
115 unsigned char ifa_scope;
116 unsigned char ifa_flags;
117 unsigned char ifa_prefixlen;
118 char ifa_label[IFNAMSIZ];
121 extern int register_inetaddr_notifier(struct notifier_block *nb);
122 extern int unregister_inetaddr_notifier(struct notifier_block *nb);
124 extern struct net_device *ip_dev_find(__be32 addr);
125 extern int inet_addr_onlink(struct in_device *in_dev, __be32 a, __be32 b);
126 extern int devinet_ioctl(unsigned int cmd, void __user *);
127 extern void devinet_init(void);
128 extern struct in_device *inetdev_init(struct net_device *dev);
129 extern struct in_device *inetdev_by_index(int);
130 extern __be32 inet_select_addr(const struct net_device *dev, __be32 dst, int scope);
131 extern __be32 inet_confirm_addr(const struct net_device *dev, __be32 dst, __be32 local, int scope);
132 extern struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, __be32 prefix, __be32 mask);
133 extern void inet_forward_change(void);
135 static __inline__ int inet_ifa_match(__be32 addr, struct in_ifaddr *ifa)
137 return !((addr^ifa->ifa_address)&ifa->ifa_mask);
141 * Check if a mask is acceptable.
144 static __inline__ int bad_mask(__be32 mask, __be32 addr)
147 if (addr & (mask = ~mask))
150 if (hmask & (hmask+1))
155 #define for_primary_ifa(in_dev) { struct in_ifaddr *ifa; \
156 for (ifa = (in_dev)->ifa_list; ifa && !(ifa->ifa_flags&IFA_F_SECONDARY); ifa = ifa->ifa_next)
158 #define for_ifa(in_dev) { struct in_ifaddr *ifa; \
159 for (ifa = (in_dev)->ifa_list; ifa; ifa = ifa->ifa_next)
162 #define endfor_ifa(in_dev) }
164 static inline struct in_device *__in_dev_get_rcu(const struct net_device *dev)
166 struct in_device *in_dev = dev->ip_ptr;
168 in_dev = rcu_dereference(in_dev);
172 static __inline__ struct in_device *
173 in_dev_get(const struct net_device *dev)
175 struct in_device *in_dev;
178 in_dev = __in_dev_get_rcu(dev);
180 atomic_inc(&in_dev->refcnt);
185 static __inline__ struct in_device *
186 __in_dev_get_rtnl(const struct net_device *dev)
188 return (struct in_device*)dev->ip_ptr;
191 extern void in_dev_finish_destroy(struct in_device *idev);
193 static inline void in_dev_put(struct in_device *idev)
195 if (atomic_dec_and_test(&idev->refcnt))
196 in_dev_finish_destroy(idev);
199 #define __in_dev_put(idev) atomic_dec(&(idev)->refcnt)
200 #define in_dev_hold(idev) atomic_inc(&(idev)->refcnt)
202 #endif /* __KERNEL__ */
204 static __inline__ __be32 inet_make_mask(int logmask)
207 return htonl(~((1<<(32-logmask))-1));
211 static __inline__ int inet_mask_len(__be32 mask)
213 __u32 hmask = ntohl(mask);
216 return 32 - ffz(~hmask);
220 #endif /* _LINUX_INETDEVICE_H */