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 static inline void ipv4_devconf_setall(struct in_device
*in_dev
)
64 bitmap_fill(in_dev
->cnf
.state
, __NET_IPV4_CONF_MAX
- 1);
67 #define IN_DEV_CONF_GET(in_dev, attr) \
68 ipv4_devconf_get((in_dev), NET_IPV4_CONF_ ## attr)
69 #define IN_DEV_CONF_SET(in_dev, attr, val) \
70 ipv4_devconf_set((in_dev), NET_IPV4_CONF_ ## attr, (val))
72 #define IN_DEV_ANDCONF(in_dev, attr) \
73 (IPV4_DEVCONF_ALL(attr) && IN_DEV_CONF_GET((in_dev), attr))
74 #define IN_DEV_ORCONF(in_dev, attr) \
75 (IPV4_DEVCONF_ALL(attr) || IN_DEV_CONF_GET((in_dev), attr))
76 #define IN_DEV_MAXCONF(in_dev, attr) \
77 (max(IPV4_DEVCONF_ALL(attr), IN_DEV_CONF_GET((in_dev), attr)))
79 #define IN_DEV_FORWARD(in_dev) IN_DEV_CONF_GET((in_dev), FORWARDING)
80 #define IN_DEV_MFORWARD(in_dev) (IPV4_DEVCONF_ALL(MC_FORWARDING) && \
81 IPV4_DEVCONF((in_dev)->cnf, \
83 #define IN_DEV_RPFILTER(in_dev) IN_DEV_ANDCONF((in_dev), RP_FILTER)
84 #define IN_DEV_SOURCE_ROUTE(in_dev) IN_DEV_ANDCONF((in_dev), \
86 #define IN_DEV_BOOTP_RELAY(in_dev) IN_DEV_ANDCONF((in_dev), BOOTP_RELAY)
88 #define IN_DEV_LOG_MARTIANS(in_dev) IN_DEV_ORCONF((in_dev), LOG_MARTIANS)
89 #define IN_DEV_PROXY_ARP(in_dev) IN_DEV_ORCONF((in_dev), PROXY_ARP)
90 #define IN_DEV_SHARED_MEDIA(in_dev) IN_DEV_ORCONF((in_dev), SHARED_MEDIA)
91 #define IN_DEV_TX_REDIRECTS(in_dev) IN_DEV_ORCONF((in_dev), SEND_REDIRECTS)
92 #define IN_DEV_SEC_REDIRECTS(in_dev) IN_DEV_ORCONF((in_dev), \
94 #define IN_DEV_IDTAG(in_dev) IN_DEV_CONF_GET(in_dev, TAG)
95 #define IN_DEV_MEDIUM_ID(in_dev) IN_DEV_CONF_GET(in_dev, MEDIUM_ID)
96 #define IN_DEV_PROMOTE_SECONDARIES(in_dev) \
97 IN_DEV_ORCONF((in_dev), \
100 #define IN_DEV_RX_REDIRECTS(in_dev) \
101 ((IN_DEV_FORWARD(in_dev) && \
102 IN_DEV_ANDCONF((in_dev), ACCEPT_REDIRECTS)) \
103 || (!IN_DEV_FORWARD(in_dev) && \
104 IN_DEV_ORCONF((in_dev), ACCEPT_REDIRECTS)))
106 #define IN_DEV_ARPFILTER(in_dev) IN_DEV_ORCONF((in_dev), ARPFILTER)
107 #define IN_DEV_ARP_ANNOUNCE(in_dev) IN_DEV_MAXCONF((in_dev), ARP_ANNOUNCE)
108 #define IN_DEV_ARP_IGNORE(in_dev) IN_DEV_MAXCONF((in_dev), ARP_IGNORE)
112 struct in_ifaddr
*ifa_next
;
113 struct in_device
*ifa_dev
;
114 struct rcu_head rcu_head
;
118 __be32 ifa_broadcast
;
120 unsigned char ifa_scope
;
121 unsigned char ifa_flags
;
122 unsigned char ifa_prefixlen
;
123 char ifa_label
[IFNAMSIZ
];
126 extern int register_inetaddr_notifier(struct notifier_block
*nb
);
127 extern int unregister_inetaddr_notifier(struct notifier_block
*nb
);
129 extern struct net_device
*ip_dev_find(__be32 addr
);
130 extern int inet_addr_onlink(struct in_device
*in_dev
, __be32 a
, __be32 b
);
131 extern int devinet_ioctl(unsigned int cmd
, void __user
*);
132 extern void devinet_init(void);
133 extern struct in_device
*inetdev_by_index(int);
134 extern __be32
inet_select_addr(const struct net_device
*dev
, __be32 dst
, int scope
);
135 extern __be32
inet_confirm_addr(const struct net_device
*dev
, __be32 dst
, __be32 local
, int scope
);
136 extern struct in_ifaddr
*inet_ifa_byprefix(struct in_device
*in_dev
, __be32 prefix
, __be32 mask
);
137 extern void inet_forward_change(void);
139 static __inline__
int inet_ifa_match(__be32 addr
, struct in_ifaddr
*ifa
)
141 return !((addr
^ifa
->ifa_address
)&ifa
->ifa_mask
);
145 * Check if a mask is acceptable.
148 static __inline__
int bad_mask(__be32 mask
, __be32 addr
)
151 if (addr
& (mask
= ~mask
))
154 if (hmask
& (hmask
+1))
159 #define for_primary_ifa(in_dev) { struct in_ifaddr *ifa; \
160 for (ifa = (in_dev)->ifa_list; ifa && !(ifa->ifa_flags&IFA_F_SECONDARY); ifa = ifa->ifa_next)
162 #define for_ifa(in_dev) { struct in_ifaddr *ifa; \
163 for (ifa = (in_dev)->ifa_list; ifa; ifa = ifa->ifa_next)
166 #define endfor_ifa(in_dev) }
168 static inline struct in_device
*__in_dev_get_rcu(const struct net_device
*dev
)
170 struct in_device
*in_dev
= dev
->ip_ptr
;
172 in_dev
= rcu_dereference(in_dev
);
176 static __inline__
struct in_device
*
177 in_dev_get(const struct net_device
*dev
)
179 struct in_device
*in_dev
;
182 in_dev
= __in_dev_get_rcu(dev
);
184 atomic_inc(&in_dev
->refcnt
);
189 static __inline__
struct in_device
*
190 __in_dev_get_rtnl(const struct net_device
*dev
)
192 return (struct in_device
*)dev
->ip_ptr
;
195 extern void in_dev_finish_destroy(struct in_device
*idev
);
197 static inline void in_dev_put(struct in_device
*idev
)
199 if (atomic_dec_and_test(&idev
->refcnt
))
200 in_dev_finish_destroy(idev
);
203 #define __in_dev_put(idev) atomic_dec(&(idev)->refcnt)
204 #define in_dev_hold(idev) atomic_inc(&(idev)->refcnt)
206 #endif /* __KERNEL__ */
208 static __inline__ __be32
inet_make_mask(int logmask
)
211 return htonl(~((1<<(32-logmask
))-1));
215 static __inline__
int inet_mask_len(__be32 mask
)
217 __u32 hmask
= ntohl(mask
);
220 return 32 - ffz(~hmask
);
224 #endif /* _LINUX_INETDEVICE_H */