1 #ifndef _LINUX_INETDEVICE_H
2 #define _LINUX_INETDEVICE_H
6 #include <linux/bitmap.h>
9 #include <linux/netdevice.h>
10 #include <linux/rcupdate.h>
11 #include <linux/timer.h>
12 #include <linux/sysctl.h>
13 #include <linux/rtnetlink.h>
17 int data
[IPV4_DEVCONF_MAX
];
18 DECLARE_BITMAP(state
, IPV4_DEVCONF_MAX
);
21 #define MC_HASH_SZ_LOG 9
24 struct net_device
*dev
;
27 struct in_ifaddr
*ifa_list
; /* IP ifaddr chain */
29 struct ip_mc_list __rcu
*mc_list
; /* IP multicast filter chain */
30 struct ip_mc_list __rcu
* __rcu
*mc_hash
;
32 int mc_count
; /* Number of installed mcasts */
33 spinlock_t mc_tomb_lock
;
34 struct ip_mc_list
*mc_tomb
;
35 unsigned long mr_v1_seen
;
36 unsigned long mr_v2_seen
;
37 unsigned long mr_maxdelay
;
39 unsigned char mr_gq_running
;
40 unsigned char mr_ifc_count
;
41 struct timer_list mr_gq_timer
; /* general query timer */
42 struct timer_list mr_ifc_timer
; /* interface change timer */
44 struct neigh_parms
*arp_parms
;
45 struct ipv4_devconf cnf
;
46 struct rcu_head rcu_head
;
49 #define IPV4_DEVCONF(cnf, attr) ((cnf).data[IPV4_DEVCONF_ ## attr - 1])
50 #define IPV4_DEVCONF_ALL(net, attr) \
51 IPV4_DEVCONF((*(net)->ipv4.devconf_all), attr)
53 static inline int ipv4_devconf_get(struct in_device
*in_dev
, int index
)
56 return in_dev
->cnf
.data
[index
];
59 static inline void ipv4_devconf_set(struct in_device
*in_dev
, int index
,
63 set_bit(index
, in_dev
->cnf
.state
);
64 in_dev
->cnf
.data
[index
] = val
;
67 static inline void ipv4_devconf_setall(struct in_device
*in_dev
)
69 bitmap_fill(in_dev
->cnf
.state
, IPV4_DEVCONF_MAX
);
72 #define IN_DEV_CONF_GET(in_dev, attr) \
73 ipv4_devconf_get((in_dev), IPV4_DEVCONF_ ## attr)
74 #define IN_DEV_CONF_SET(in_dev, attr, val) \
75 ipv4_devconf_set((in_dev), IPV4_DEVCONF_ ## attr, (val))
77 #define IN_DEV_ANDCONF(in_dev, attr) \
78 (IPV4_DEVCONF_ALL(dev_net(in_dev->dev), attr) && \
79 IN_DEV_CONF_GET((in_dev), attr))
81 #define IN_DEV_NET_ORCONF(in_dev, net, attr) \
82 (IPV4_DEVCONF_ALL(net, attr) || \
83 IN_DEV_CONF_GET((in_dev), attr))
85 #define IN_DEV_ORCONF(in_dev, attr) \
86 IN_DEV_NET_ORCONF(in_dev, dev_net(in_dev->dev), attr)
88 #define IN_DEV_MAXCONF(in_dev, attr) \
89 (max(IPV4_DEVCONF_ALL(dev_net(in_dev->dev), attr), \
90 IN_DEV_CONF_GET((in_dev), attr)))
92 #define IN_DEV_FORWARD(in_dev) IN_DEV_CONF_GET((in_dev), FORWARDING)
93 #define IN_DEV_MFORWARD(in_dev) IN_DEV_ANDCONF((in_dev), MC_FORWARDING)
94 #define IN_DEV_RPFILTER(in_dev) IN_DEV_MAXCONF((in_dev), RP_FILTER)
95 #define IN_DEV_SRC_VMARK(in_dev) IN_DEV_ORCONF((in_dev), SRC_VMARK)
96 #define IN_DEV_SOURCE_ROUTE(in_dev) IN_DEV_ANDCONF((in_dev), \
98 #define IN_DEV_ACCEPT_LOCAL(in_dev) IN_DEV_ORCONF((in_dev), ACCEPT_LOCAL)
99 #define IN_DEV_BOOTP_RELAY(in_dev) IN_DEV_ANDCONF((in_dev), BOOTP_RELAY)
101 #define IN_DEV_LOG_MARTIANS(in_dev) IN_DEV_ORCONF((in_dev), LOG_MARTIANS)
102 #define IN_DEV_PROXY_ARP(in_dev) IN_DEV_ORCONF((in_dev), PROXY_ARP)
103 #define IN_DEV_PROXY_ARP_PVLAN(in_dev) IN_DEV_CONF_GET(in_dev, PROXY_ARP_PVLAN)
104 #define IN_DEV_SHARED_MEDIA(in_dev) IN_DEV_ORCONF((in_dev), SHARED_MEDIA)
105 #define IN_DEV_TX_REDIRECTS(in_dev) IN_DEV_ORCONF((in_dev), SEND_REDIRECTS)
106 #define IN_DEV_SEC_REDIRECTS(in_dev) IN_DEV_ORCONF((in_dev), \
108 #define IN_DEV_IDTAG(in_dev) IN_DEV_CONF_GET(in_dev, TAG)
109 #define IN_DEV_MEDIUM_ID(in_dev) IN_DEV_CONF_GET(in_dev, MEDIUM_ID)
110 #define IN_DEV_PROMOTE_SECONDARIES(in_dev) \
111 IN_DEV_ORCONF((in_dev), \
113 #define IN_DEV_ROUTE_LOCALNET(in_dev) IN_DEV_ORCONF(in_dev, ROUTE_LOCALNET)
114 #define IN_DEV_NET_ROUTE_LOCALNET(in_dev, net) \
115 IN_DEV_NET_ORCONF(in_dev, net, ROUTE_LOCALNET)
117 #define IN_DEV_RX_REDIRECTS(in_dev) \
118 ((IN_DEV_FORWARD(in_dev) && \
119 IN_DEV_ANDCONF((in_dev), ACCEPT_REDIRECTS)) \
120 || (!IN_DEV_FORWARD(in_dev) && \
121 IN_DEV_ORCONF((in_dev), ACCEPT_REDIRECTS)))
123 #define IN_DEV_ARPFILTER(in_dev) IN_DEV_ORCONF((in_dev), ARPFILTER)
124 #define IN_DEV_ARP_ACCEPT(in_dev) IN_DEV_ORCONF((in_dev), ARP_ACCEPT)
125 #define IN_DEV_ARP_ANNOUNCE(in_dev) IN_DEV_MAXCONF((in_dev), ARP_ANNOUNCE)
126 #define IN_DEV_ARP_IGNORE(in_dev) IN_DEV_MAXCONF((in_dev), ARP_IGNORE)
127 #define IN_DEV_ARP_NOTIFY(in_dev) IN_DEV_MAXCONF((in_dev), ARP_NOTIFY)
130 struct hlist_node hash
;
131 struct in_ifaddr
*ifa_next
;
132 struct in_device
*ifa_dev
;
133 struct rcu_head rcu_head
;
137 __be32 ifa_broadcast
;
138 unsigned char ifa_scope
;
139 unsigned char ifa_flags
;
140 unsigned char ifa_prefixlen
;
141 char ifa_label
[IFNAMSIZ
];
143 /* In seconds, relative to tstamp. Expiry is at tstamp + HZ * lft. */
145 __u32 ifa_preferred_lft
;
146 unsigned long ifa_cstamp
; /* created timestamp */
147 unsigned long ifa_tstamp
; /* updated timestamp */
150 extern int register_inetaddr_notifier(struct notifier_block
*nb
);
151 extern int unregister_inetaddr_notifier(struct notifier_block
*nb
);
153 extern void inet_netconf_notify_devconf(struct net
*net
, int type
, int ifindex
,
154 struct ipv4_devconf
*devconf
);
156 extern struct net_device
*__ip_dev_find(struct net
*net
, __be32 addr
, bool devref
);
157 static inline struct net_device
*ip_dev_find(struct net
*net
, __be32 addr
)
159 return __ip_dev_find(net
, addr
, true);
162 extern int inet_addr_onlink(struct in_device
*in_dev
, __be32 a
, __be32 b
);
163 extern int devinet_ioctl(struct net
*net
, unsigned int cmd
, void __user
*);
164 extern void devinet_init(void);
165 extern struct in_device
*inetdev_by_index(struct net
*, int);
166 extern __be32
inet_select_addr(const struct net_device
*dev
, __be32 dst
, int scope
);
167 extern __be32
inet_confirm_addr(struct in_device
*in_dev
, __be32 dst
, __be32 local
, int scope
);
168 extern struct in_ifaddr
*inet_ifa_byprefix(struct in_device
*in_dev
, __be32 prefix
, __be32 mask
);
170 static __inline__
int inet_ifa_match(__be32 addr
, struct in_ifaddr
*ifa
)
172 return !((addr
^ifa
->ifa_address
)&ifa
->ifa_mask
);
176 * Check if a mask is acceptable.
179 static __inline__
int bad_mask(__be32 mask
, __be32 addr
)
182 if (addr
& (mask
= ~mask
))
185 if (hmask
& (hmask
+1))
190 #define for_primary_ifa(in_dev) { struct in_ifaddr *ifa; \
191 for (ifa = (in_dev)->ifa_list; ifa && !(ifa->ifa_flags&IFA_F_SECONDARY); ifa = ifa->ifa_next)
193 #define for_ifa(in_dev) { struct in_ifaddr *ifa; \
194 for (ifa = (in_dev)->ifa_list; ifa; ifa = ifa->ifa_next)
197 #define endfor_ifa(in_dev) }
199 static inline struct in_device
*__in_dev_get_rcu(const struct net_device
*dev
)
201 return rcu_dereference(dev
->ip_ptr
);
204 static inline struct in_device
*in_dev_get(const struct net_device
*dev
)
206 struct in_device
*in_dev
;
209 in_dev
= __in_dev_get_rcu(dev
);
211 atomic_inc(&in_dev
->refcnt
);
216 static inline struct in_device
*__in_dev_get_rtnl(const struct net_device
*dev
)
218 return rtnl_dereference(dev
->ip_ptr
);
221 extern void in_dev_finish_destroy(struct in_device
*idev
);
223 static inline void in_dev_put(struct in_device
*idev
)
225 if (atomic_dec_and_test(&idev
->refcnt
))
226 in_dev_finish_destroy(idev
);
229 #define __in_dev_put(idev) atomic_dec(&(idev)->refcnt)
230 #define in_dev_hold(idev) atomic_inc(&(idev)->refcnt)
232 #endif /* __KERNEL__ */
234 static __inline__ __be32
inet_make_mask(int logmask
)
237 return htonl(~((1<<(32-logmask
))-1));
241 static __inline__
int inet_mask_len(__be32 mask
)
243 __u32 hmask
= ntohl(mask
);
246 return 32 - ffz(~hmask
);
250 #endif /* _LINUX_INETDEVICE_H */
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