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>
11 #include <linux/sysctl.h>
16 int data
[__NET_IPV4_CONF_MAX
- 1];
17 DECLARE_BITMAP(state
, __NET_IPV4_CONF_MAX
- 1);
22 struct net_device
*dev
;
25 struct in_ifaddr
*ifa_list
; /* IP ifaddr chain */
26 rwlock_t mc_list_lock
;
27 struct ip_mc_list
*mc_list
; /* IP multicast filter chain */
28 int mc_count
; /* Number of installed mcasts */
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(net, attr) \
47 IPV4_DEVCONF((*(net)->ipv4.devconf_all), attr)
49 static inline int ipv4_devconf_get(struct in_device
*in_dev
, int index
)
52 return in_dev
->cnf
.data
[index
];
55 static inline void ipv4_devconf_set(struct in_device
*in_dev
, int index
,
59 set_bit(index
, in_dev
->cnf
.state
);
60 in_dev
->cnf
.data
[index
] = val
;
63 static inline void ipv4_devconf_setall(struct in_device
*in_dev
)
65 bitmap_fill(in_dev
->cnf
.state
, __NET_IPV4_CONF_MAX
- 1);
68 #define IN_DEV_CONF_GET(in_dev, attr) \
69 ipv4_devconf_get((in_dev), NET_IPV4_CONF_ ## attr)
70 #define IN_DEV_CONF_SET(in_dev, attr, val) \
71 ipv4_devconf_set((in_dev), NET_IPV4_CONF_ ## attr, (val))
73 #define IN_DEV_ANDCONF(in_dev, attr) \
74 (IPV4_DEVCONF_ALL(dev_net(in_dev->dev), attr) && \
75 IN_DEV_CONF_GET((in_dev), attr))
76 #define IN_DEV_ORCONF(in_dev, attr) \
77 (IPV4_DEVCONF_ALL(dev_net(in_dev->dev), attr) || \
78 IN_DEV_CONF_GET((in_dev), attr))
79 #define IN_DEV_MAXCONF(in_dev, attr) \
80 (max(IPV4_DEVCONF_ALL(dev_net(in_dev->dev), attr), \
81 IN_DEV_CONF_GET((in_dev), attr)))
83 #define IN_DEV_FORWARD(in_dev) IN_DEV_CONF_GET((in_dev), FORWARDING)
84 #define IN_DEV_MFORWARD(in_dev) IN_DEV_ANDCONF((in_dev), MC_FORWARDING)
85 #define IN_DEV_RPFILTER(in_dev) IN_DEV_MAXCONF((in_dev), RP_FILTER)
86 #define IN_DEV_SOURCE_ROUTE(in_dev) IN_DEV_ANDCONF((in_dev), \
88 #define IN_DEV_BOOTP_RELAY(in_dev) IN_DEV_ANDCONF((in_dev), BOOTP_RELAY)
90 #define IN_DEV_LOG_MARTIANS(in_dev) IN_DEV_ORCONF((in_dev), LOG_MARTIANS)
91 #define IN_DEV_PROXY_ARP(in_dev) IN_DEV_ORCONF((in_dev), PROXY_ARP)
92 #define IN_DEV_SHARED_MEDIA(in_dev) IN_DEV_ORCONF((in_dev), SHARED_MEDIA)
93 #define IN_DEV_TX_REDIRECTS(in_dev) IN_DEV_ORCONF((in_dev), SEND_REDIRECTS)
94 #define IN_DEV_SEC_REDIRECTS(in_dev) IN_DEV_ORCONF((in_dev), \
96 #define IN_DEV_IDTAG(in_dev) IN_DEV_CONF_GET(in_dev, TAG)
97 #define IN_DEV_MEDIUM_ID(in_dev) IN_DEV_CONF_GET(in_dev, MEDIUM_ID)
98 #define IN_DEV_PROMOTE_SECONDARIES(in_dev) \
99 IN_DEV_ORCONF((in_dev), \
102 #define IN_DEV_RX_REDIRECTS(in_dev) \
103 ((IN_DEV_FORWARD(in_dev) && \
104 IN_DEV_ANDCONF((in_dev), ACCEPT_REDIRECTS)) \
105 || (!IN_DEV_FORWARD(in_dev) && \
106 IN_DEV_ORCONF((in_dev), ACCEPT_REDIRECTS)))
108 #define IN_DEV_ARPFILTER(in_dev) IN_DEV_ORCONF((in_dev), ARPFILTER)
109 #define IN_DEV_ARP_ANNOUNCE(in_dev) IN_DEV_MAXCONF((in_dev), ARP_ANNOUNCE)
110 #define IN_DEV_ARP_IGNORE(in_dev) IN_DEV_MAXCONF((in_dev), ARP_IGNORE)
111 #define IN_DEV_ARP_NOTIFY(in_dev) IN_DEV_MAXCONF((in_dev), ARP_NOTIFY)
115 struct in_ifaddr
*ifa_next
;
116 struct in_device
*ifa_dev
;
117 struct rcu_head rcu_head
;
121 __be32 ifa_broadcast
;
122 unsigned char ifa_scope
;
123 unsigned char ifa_flags
;
124 unsigned char ifa_prefixlen
;
125 char ifa_label
[IFNAMSIZ
];
128 extern int register_inetaddr_notifier(struct notifier_block
*nb
);
129 extern int unregister_inetaddr_notifier(struct notifier_block
*nb
);
131 extern struct net_device
*ip_dev_find(struct net
*net
, __be32 addr
);
132 extern int inet_addr_onlink(struct in_device
*in_dev
, __be32 a
, __be32 b
);
133 extern int devinet_ioctl(struct net
*net
, unsigned int cmd
, void __user
*);
134 extern void devinet_init(void);
135 extern struct in_device
*inetdev_by_index(struct net
*, int);
136 extern __be32
inet_select_addr(const struct net_device
*dev
, __be32 dst
, int scope
);
137 extern __be32
inet_confirm_addr(struct in_device
*in_dev
, __be32 dst
, __be32 local
, int scope
);
138 extern struct in_ifaddr
*inet_ifa_byprefix(struct in_device
*in_dev
, __be32 prefix
, __be32 mask
);
140 static __inline__
int inet_ifa_match(__be32 addr
, struct in_ifaddr
*ifa
)
142 return !((addr
^ifa
->ifa_address
)&ifa
->ifa_mask
);
146 * Check if a mask is acceptable.
149 static __inline__
int bad_mask(__be32 mask
, __be32 addr
)
152 if (addr
& (mask
= ~mask
))
155 if (hmask
& (hmask
+1))
160 #define for_primary_ifa(in_dev) { struct in_ifaddr *ifa; \
161 for (ifa = (in_dev)->ifa_list; ifa && !(ifa->ifa_flags&IFA_F_SECONDARY); ifa = ifa->ifa_next)
163 #define for_ifa(in_dev) { struct in_ifaddr *ifa; \
164 for (ifa = (in_dev)->ifa_list; ifa; ifa = ifa->ifa_next)
167 #define endfor_ifa(in_dev) }
169 static inline struct in_device
*__in_dev_get_rcu(const struct net_device
*dev
)
171 struct in_device
*in_dev
= dev
->ip_ptr
;
173 in_dev
= rcu_dereference(in_dev
);
177 static __inline__
struct in_device
*
178 in_dev_get(const struct net_device
*dev
)
180 struct in_device
*in_dev
;
183 in_dev
= __in_dev_get_rcu(dev
);
185 atomic_inc(&in_dev
->refcnt
);
190 static __inline__
struct in_device
*
191 __in_dev_get_rtnl(const struct net_device
*dev
)
193 return (struct in_device
*)dev
->ip_ptr
;
196 extern void in_dev_finish_destroy(struct in_device
*idev
);
198 static inline void in_dev_put(struct in_device
*idev
)
200 if (atomic_dec_and_test(&idev
->refcnt
))
201 in_dev_finish_destroy(idev
);
204 #define __in_dev_put(idev) atomic_dec(&(idev)->refcnt)
205 #define in_dev_hold(idev) atomic_inc(&(idev)->refcnt)
207 #endif /* __KERNEL__ */
209 static __inline__ __be32
inet_make_mask(int logmask
)
212 return htonl(~((1<<(32-logmask
))-1));
216 static __inline__
int inet_mask_len(__be32 mask
)
218 __u32 hmask
= ntohl(mask
);
221 return 32 - ffz(~hmask
);
225 #endif /* _LINUX_INETDEVICE_H */
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