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>
12 #include <linux/rtnetlink.h>
16 IPV4_DEVCONF_FORWARDING
=1,
17 IPV4_DEVCONF_MC_FORWARDING
,
18 IPV4_DEVCONF_PROXY_ARP
,
19 IPV4_DEVCONF_ACCEPT_REDIRECTS
,
20 IPV4_DEVCONF_SECURE_REDIRECTS
,
21 IPV4_DEVCONF_SEND_REDIRECTS
,
22 IPV4_DEVCONF_SHARED_MEDIA
,
23 IPV4_DEVCONF_RP_FILTER
,
24 IPV4_DEVCONF_ACCEPT_SOURCE_ROUTE
,
25 IPV4_DEVCONF_BOOTP_RELAY
,
26 IPV4_DEVCONF_LOG_MARTIANS
,
28 IPV4_DEVCONF_ARPFILTER
,
29 IPV4_DEVCONF_MEDIUM_ID
,
31 IPV4_DEVCONF_NOPOLICY
,
32 IPV4_DEVCONF_FORCE_IGMP_VERSION
,
33 IPV4_DEVCONF_ARP_ANNOUNCE
,
34 IPV4_DEVCONF_ARP_IGNORE
,
35 IPV4_DEVCONF_PROMOTE_SECONDARIES
,
36 IPV4_DEVCONF_ARP_ACCEPT
,
37 IPV4_DEVCONF_ARP_NOTIFY
,
38 IPV4_DEVCONF_ACCEPT_LOCAL
,
39 IPV4_DEVCONF_SRC_VMARK
,
40 IPV4_DEVCONF_PROXY_ARP_PVLAN
,
44 #define IPV4_DEVCONF_MAX (__IPV4_DEVCONF_MAX - 1)
48 int data
[IPV4_DEVCONF_MAX
];
49 DECLARE_BITMAP(state
, IPV4_DEVCONF_MAX
);
53 struct net_device
*dev
;
56 struct in_ifaddr
*ifa_list
; /* IP ifaddr chain */
57 struct ip_mc_list __rcu
*mc_list
; /* IP multicast filter chain */
58 int mc_count
; /* Number of installed mcasts */
59 spinlock_t mc_tomb_lock
;
60 struct ip_mc_list
*mc_tomb
;
61 unsigned long mr_v1_seen
;
62 unsigned long mr_v2_seen
;
63 unsigned long mr_maxdelay
;
65 unsigned char mr_gq_running
;
66 unsigned char mr_ifc_count
;
67 struct timer_list mr_gq_timer
; /* general query timer */
68 struct timer_list mr_ifc_timer
; /* interface change timer */
70 struct neigh_parms
*arp_parms
;
71 struct ipv4_devconf cnf
;
72 struct rcu_head rcu_head
;
75 #define IPV4_DEVCONF(cnf, attr) ((cnf).data[IPV4_DEVCONF_ ## attr - 1])
76 #define IPV4_DEVCONF_ALL(net, attr) \
77 IPV4_DEVCONF((*(net)->ipv4.devconf_all), attr)
79 static inline int ipv4_devconf_get(struct in_device
*in_dev
, int index
)
82 return in_dev
->cnf
.data
[index
];
85 static inline void ipv4_devconf_set(struct in_device
*in_dev
, int index
,
89 set_bit(index
, in_dev
->cnf
.state
);
90 in_dev
->cnf
.data
[index
] = val
;
93 static inline void ipv4_devconf_setall(struct in_device
*in_dev
)
95 bitmap_fill(in_dev
->cnf
.state
, IPV4_DEVCONF_MAX
);
98 #define IN_DEV_CONF_GET(in_dev, attr) \
99 ipv4_devconf_get((in_dev), IPV4_DEVCONF_ ## attr)
100 #define IN_DEV_CONF_SET(in_dev, attr, val) \
101 ipv4_devconf_set((in_dev), IPV4_DEVCONF_ ## attr, (val))
103 #define IN_DEV_ANDCONF(in_dev, attr) \
104 (IPV4_DEVCONF_ALL(dev_net(in_dev->dev), attr) && \
105 IN_DEV_CONF_GET((in_dev), attr))
106 #define IN_DEV_ORCONF(in_dev, attr) \
107 (IPV4_DEVCONF_ALL(dev_net(in_dev->dev), attr) || \
108 IN_DEV_CONF_GET((in_dev), attr))
109 #define IN_DEV_MAXCONF(in_dev, attr) \
110 (max(IPV4_DEVCONF_ALL(dev_net(in_dev->dev), attr), \
111 IN_DEV_CONF_GET((in_dev), attr)))
113 #define IN_DEV_FORWARD(in_dev) IN_DEV_CONF_GET((in_dev), FORWARDING)
114 #define IN_DEV_MFORWARD(in_dev) IN_DEV_ANDCONF((in_dev), MC_FORWARDING)
115 #define IN_DEV_RPFILTER(in_dev) IN_DEV_MAXCONF((in_dev), RP_FILTER)
116 #define IN_DEV_SRC_VMARK(in_dev) IN_DEV_ORCONF((in_dev), SRC_VMARK)
117 #define IN_DEV_SOURCE_ROUTE(in_dev) IN_DEV_ANDCONF((in_dev), \
119 #define IN_DEV_ACCEPT_LOCAL(in_dev) IN_DEV_ORCONF((in_dev), ACCEPT_LOCAL)
120 #define IN_DEV_BOOTP_RELAY(in_dev) IN_DEV_ANDCONF((in_dev), BOOTP_RELAY)
122 #define IN_DEV_LOG_MARTIANS(in_dev) IN_DEV_ORCONF((in_dev), LOG_MARTIANS)
123 #define IN_DEV_PROXY_ARP(in_dev) IN_DEV_ORCONF((in_dev), PROXY_ARP)
124 #define IN_DEV_PROXY_ARP_PVLAN(in_dev) IN_DEV_CONF_GET(in_dev, PROXY_ARP_PVLAN)
125 #define IN_DEV_SHARED_MEDIA(in_dev) IN_DEV_ORCONF((in_dev), SHARED_MEDIA)
126 #define IN_DEV_TX_REDIRECTS(in_dev) IN_DEV_ORCONF((in_dev), SEND_REDIRECTS)
127 #define IN_DEV_SEC_REDIRECTS(in_dev) IN_DEV_ORCONF((in_dev), \
129 #define IN_DEV_IDTAG(in_dev) IN_DEV_CONF_GET(in_dev, TAG)
130 #define IN_DEV_MEDIUM_ID(in_dev) IN_DEV_CONF_GET(in_dev, MEDIUM_ID)
131 #define IN_DEV_PROMOTE_SECONDARIES(in_dev) \
132 IN_DEV_ORCONF((in_dev), \
135 #define IN_DEV_RX_REDIRECTS(in_dev) \
136 ((IN_DEV_FORWARD(in_dev) && \
137 IN_DEV_ANDCONF((in_dev), ACCEPT_REDIRECTS)) \
138 || (!IN_DEV_FORWARD(in_dev) && \
139 IN_DEV_ORCONF((in_dev), ACCEPT_REDIRECTS)))
141 #define IN_DEV_ARPFILTER(in_dev) IN_DEV_ORCONF((in_dev), ARPFILTER)
142 #define IN_DEV_ARP_ACCEPT(in_dev) IN_DEV_ORCONF((in_dev), ARP_ACCEPT)
143 #define IN_DEV_ARP_ANNOUNCE(in_dev) IN_DEV_MAXCONF((in_dev), ARP_ANNOUNCE)
144 #define IN_DEV_ARP_IGNORE(in_dev) IN_DEV_MAXCONF((in_dev), ARP_IGNORE)
145 #define IN_DEV_ARP_NOTIFY(in_dev) IN_DEV_MAXCONF((in_dev), ARP_NOTIFY)
148 struct hlist_node hash
;
149 struct in_ifaddr
*ifa_next
;
150 struct in_device
*ifa_dev
;
151 struct rcu_head rcu_head
;
155 __be32 ifa_broadcast
;
156 unsigned char ifa_scope
;
157 unsigned char ifa_flags
;
158 unsigned char ifa_prefixlen
;
159 char ifa_label
[IFNAMSIZ
];
162 extern int register_inetaddr_notifier(struct notifier_block
*nb
);
163 extern int unregister_inetaddr_notifier(struct notifier_block
*nb
);
165 extern struct net_device
*__ip_dev_find(struct net
*net
, __be32 addr
, bool devref
);
166 static inline struct net_device
*ip_dev_find(struct net
*net
, __be32 addr
)
168 return __ip_dev_find(net
, addr
, true);
171 extern int inet_addr_onlink(struct in_device
*in_dev
, __be32 a
, __be32 b
);
172 extern int devinet_ioctl(struct net
*net
, unsigned int cmd
, void __user
*);
173 extern void devinet_init(void);
174 extern struct in_device
*inetdev_by_index(struct net
*, int);
175 extern __be32
inet_select_addr(const struct net_device
*dev
, __be32 dst
, int scope
);
176 extern __be32
inet_confirm_addr(struct in_device
*in_dev
, __be32 dst
, __be32 local
, int scope
);
177 extern struct in_ifaddr
*inet_ifa_byprefix(struct in_device
*in_dev
, __be32 prefix
, __be32 mask
);
179 static __inline__
int inet_ifa_match(__be32 addr
, struct in_ifaddr
*ifa
)
181 return !((addr
^ifa
->ifa_address
)&ifa
->ifa_mask
);
185 * Check if a mask is acceptable.
188 static __inline__
int bad_mask(__be32 mask
, __be32 addr
)
191 if (addr
& (mask
= ~mask
))
194 if (hmask
& (hmask
+1))
199 #define for_primary_ifa(in_dev) { struct in_ifaddr *ifa; \
200 for (ifa = (in_dev)->ifa_list; ifa && !(ifa->ifa_flags&IFA_F_SECONDARY); ifa = ifa->ifa_next)
202 #define for_ifa(in_dev) { struct in_ifaddr *ifa; \
203 for (ifa = (in_dev)->ifa_list; ifa; ifa = ifa->ifa_next)
206 #define endfor_ifa(in_dev) }
208 static inline struct in_device
*__in_dev_get_rcu(const struct net_device
*dev
)
210 return rcu_dereference(dev
->ip_ptr
);
213 static inline struct in_device
*in_dev_get(const struct net_device
*dev
)
215 struct in_device
*in_dev
;
218 in_dev
= __in_dev_get_rcu(dev
);
220 atomic_inc(&in_dev
->refcnt
);
225 static inline struct in_device
*__in_dev_get_rtnl(const struct net_device
*dev
)
227 return rtnl_dereference(dev
->ip_ptr
);
230 extern void in_dev_finish_destroy(struct in_device
*idev
);
232 static inline void in_dev_put(struct in_device
*idev
)
234 if (atomic_dec_and_test(&idev
->refcnt
))
235 in_dev_finish_destroy(idev
);
238 #define __in_dev_put(idev) atomic_dec(&(idev)->refcnt)
239 #define in_dev_hold(idev) atomic_inc(&(idev)->refcnt)
241 #endif /* __KERNEL__ */
243 static __inline__ __be32
inet_make_mask(int logmask
)
246 return htonl(~((1<<(32-logmask
))-1));
250 static __inline__
int inet_mask_len(__be32 mask
)
252 __u32 hmask
= ntohl(mask
);
255 return 32 - ffz(~hmask
);
259 #endif /* _LINUX_INETDEVICE_H */