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>
14 int data[__NET_IPV4_CONF_MAX - 1];
17 extern struct ipv4_devconf ipv4_devconf;
21 struct net_device *dev;
24 struct in_ifaddr *ifa_list; /* IP ifaddr chain */
25 rwlock_t mc_list_lock;
26 struct ip_mc_list *mc_list; /* IP multicast filter chain */
27 spinlock_t mc_tomb_lock;
28 struct ip_mc_list *mc_tomb;
29 unsigned long mr_v1_seen;
30 unsigned long mr_v2_seen;
31 unsigned long mr_maxdelay;
33 unsigned char mr_gq_running;
34 unsigned char mr_ifc_count;
35 struct timer_list mr_gq_timer; /* general query timer */
36 struct timer_list mr_ifc_timer; /* interface change timer */
38 struct neigh_parms *arp_parms;
39 struct ipv4_devconf cnf;
40 struct rcu_head rcu_head;
43 #define IPV4_DEVCONF(cnf, attr) ((cnf).data[NET_IPV4_CONF_ ## attr - 1])
44 #define IPV4_DEVCONF_ALL(attr) IPV4_DEVCONF(ipv4_devconf, attr)
46 static inline int ipv4_devconf_get(struct in_device *in_dev, int index)
49 return in_dev->cnf.data[index];
52 static inline void ipv4_devconf_set(struct in_device *in_dev, int index,
56 in_dev->cnf.data[index] = val;
59 #define IN_DEV_CONF_GET(in_dev, attr) \
60 ipv4_devconf_get((in_dev), NET_IPV4_CONF_ ## attr)
61 #define IN_DEV_CONF_SET(in_dev, attr, val) \
62 ipv4_devconf_set((in_dev), NET_IPV4_CONF_ ## attr, (val))
64 #define IN_DEV_ANDCONF(in_dev, attr) \
65 (IPV4_DEVCONF_ALL(attr) && IN_DEV_CONF_GET((in_dev), attr))
66 #define IN_DEV_ORCONF(in_dev, attr) \
67 (IPV4_DEVCONF_ALL(attr) || IN_DEV_CONF_GET((in_dev), attr))
68 #define IN_DEV_MAXCONF(in_dev, attr) \
69 (max(IPV4_DEVCONF_ALL(attr), IN_DEV_CONF_GET((in_dev), attr)))
71 #define IN_DEV_FORWARD(in_dev) IN_DEV_CONF_GET((in_dev), FORWARDING)
72 #define IN_DEV_MFORWARD(in_dev) (IPV4_DEVCONF_ALL(MC_FORWARDING) && \
73 IPV4_DEVCONF((in_dev)->cnf, \
75 #define IN_DEV_RPFILTER(in_dev) IN_DEV_ANDCONF((in_dev), RP_FILTER)
76 #define IN_DEV_SOURCE_ROUTE(in_dev) IN_DEV_ANDCONF((in_dev), \
78 #define IN_DEV_BOOTP_RELAY(in_dev) IN_DEV_ANDCONF((in_dev), BOOTP_RELAY)
80 #define IN_DEV_LOG_MARTIANS(in_dev) IN_DEV_ORCONF((in_dev), LOG_MARTIANS)
81 #define IN_DEV_PROXY_ARP(in_dev) IN_DEV_ORCONF((in_dev), PROXY_ARP)
82 #define IN_DEV_SHARED_MEDIA(in_dev) IN_DEV_ORCONF((in_dev), SHARED_MEDIA)
83 #define IN_DEV_TX_REDIRECTS(in_dev) IN_DEV_ORCONF((in_dev), SEND_REDIRECTS)
84 #define IN_DEV_SEC_REDIRECTS(in_dev) IN_DEV_ORCONF((in_dev), \
86 #define IN_DEV_IDTAG(in_dev) IN_DEV_CONF_GET(in_dev, TAG)
87 #define IN_DEV_MEDIUM_ID(in_dev) IN_DEV_CONF_GET(in_dev, MEDIUM_ID)
88 #define IN_DEV_PROMOTE_SECONDARIES(in_dev) \
89 IN_DEV_ORCONF((in_dev), \
92 #define IN_DEV_RX_REDIRECTS(in_dev) \
93 ((IN_DEV_FORWARD(in_dev) && \
94 IN_DEV_ANDCONF((in_dev), ACCEPT_REDIRECTS)) \
95 || (!IN_DEV_FORWARD(in_dev) && \
96 IN_DEV_ORCONF((in_dev), ACCEPT_REDIRECTS)))
98 #define IN_DEV_ARPFILTER(in_dev) IN_DEV_ORCONF((in_dev), ARPFILTER)
99 #define IN_DEV_ARP_ANNOUNCE(in_dev) IN_DEV_MAXCONF((in_dev), ARP_ANNOUNCE)
100 #define IN_DEV_ARP_IGNORE(in_dev) IN_DEV_MAXCONF((in_dev), ARP_IGNORE)
104 struct in_ifaddr *ifa_next;
105 struct in_device *ifa_dev;
106 struct rcu_head rcu_head;
110 __be32 ifa_broadcast;
112 unsigned char ifa_scope;
113 unsigned char ifa_flags;
114 unsigned char ifa_prefixlen;
115 char ifa_label[IFNAMSIZ];
118 extern int register_inetaddr_notifier(struct notifier_block *nb);
119 extern int unregister_inetaddr_notifier(struct notifier_block *nb);
121 extern struct net_device *ip_dev_find(__be32 addr);
122 extern int inet_addr_onlink(struct in_device *in_dev, __be32 a, __be32 b);
123 extern int devinet_ioctl(unsigned int cmd, void __user *);
124 extern void devinet_init(void);
125 extern struct in_device *inetdev_init(struct net_device *dev);
126 extern struct in_device *inetdev_by_index(int);
127 extern __be32 inet_select_addr(const struct net_device *dev, __be32 dst, int scope);
128 extern __be32 inet_confirm_addr(const struct net_device *dev, __be32 dst, __be32 local, int scope);
129 extern struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, __be32 prefix, __be32 mask);
130 extern void inet_forward_change(void);
132 static __inline__ int inet_ifa_match(__be32 addr, struct in_ifaddr *ifa)
134 return !((addr^ifa->ifa_address)&ifa->ifa_mask);
138 * Check if a mask is acceptable.
141 static __inline__ int bad_mask(__be32 mask, __be32 addr)
144 if (addr & (mask = ~mask))
147 if (hmask & (hmask+1))
152 #define for_primary_ifa(in_dev) { struct in_ifaddr *ifa; \
153 for (ifa = (in_dev)->ifa_list; ifa && !(ifa->ifa_flags&IFA_F_SECONDARY); ifa = ifa->ifa_next)
155 #define for_ifa(in_dev) { struct in_ifaddr *ifa; \
156 for (ifa = (in_dev)->ifa_list; ifa; ifa = ifa->ifa_next)
159 #define endfor_ifa(in_dev) }
161 static inline struct in_device *__in_dev_get_rcu(const struct net_device *dev)
163 struct in_device *in_dev = dev->ip_ptr;
165 in_dev = rcu_dereference(in_dev);
169 static __inline__ struct in_device *
170 in_dev_get(const struct net_device *dev)
172 struct in_device *in_dev;
175 in_dev = __in_dev_get_rcu(dev);
177 atomic_inc(&in_dev->refcnt);
182 static __inline__ struct in_device *
183 __in_dev_get_rtnl(const struct net_device *dev)
185 return (struct in_device*)dev->ip_ptr;
188 extern void in_dev_finish_destroy(struct in_device *idev);
190 static inline void in_dev_put(struct in_device *idev)
192 if (atomic_dec_and_test(&idev->refcnt))
193 in_dev_finish_destroy(idev);
196 #define __in_dev_put(idev) atomic_dec(&(idev)->refcnt)
197 #define in_dev_hold(idev) atomic_inc(&(idev)->refcnt)
199 #endif /* __KERNEL__ */
201 static __inline__ __be32 inet_make_mask(int logmask)
204 return htonl(~((1<<(32-logmask))-1));
208 static __inline__ int inet_mask_len(__be32 mask)
210 __u32 hmask = ntohl(mask);
213 return 32 - ffz(~hmask);
217 #endif /* _LINUX_INETDEVICE_H */