1 #ifndef _LINUX_INETDEVICE_H
2 #define _LINUX_INETDEVICE_H
12 int accept_source_route
;
27 extern struct ipv4_devconf ipv4_devconf
;
31 struct net_device
*dev
;
35 struct in_ifaddr
*ifa_list
; /* IP ifaddr chain */
36 struct ip_mc_list
*mc_list
; /* IP multicast filter chain */
37 rwlock_t mc_lock
; /* for mc_tomb */
38 struct ip_mc_list
*mc_tomb
;
39 unsigned long mr_v1_seen
;
40 unsigned long mr_v2_seen
;
41 unsigned long mr_maxdelay
;
43 unsigned char mr_gq_running
;
44 unsigned char mr_ifc_count
;
45 struct timer_list mr_gq_timer
; /* general query timer */
46 struct timer_list mr_ifc_timer
; /* interface change timer */
48 struct neigh_parms
*arp_parms
;
49 struct ipv4_devconf cnf
;
52 #define IN_DEV_FORWARD(in_dev) ((in_dev)->cnf.forwarding)
53 #define IN_DEV_MFORWARD(in_dev) (ipv4_devconf.mc_forwarding && (in_dev)->cnf.mc_forwarding)
54 #define IN_DEV_RPFILTER(in_dev) (ipv4_devconf.rp_filter && (in_dev)->cnf.rp_filter)
55 #define IN_DEV_SOURCE_ROUTE(in_dev) (ipv4_devconf.accept_source_route && (in_dev)->cnf.accept_source_route)
56 #define IN_DEV_BOOTP_RELAY(in_dev) (ipv4_devconf.bootp_relay && (in_dev)->cnf.bootp_relay)
58 #define IN_DEV_LOG_MARTIANS(in_dev) (ipv4_devconf.log_martians || (in_dev)->cnf.log_martians)
59 #define IN_DEV_PROXY_ARP(in_dev) (ipv4_devconf.proxy_arp || (in_dev)->cnf.proxy_arp)
60 #define IN_DEV_SHARED_MEDIA(in_dev) (ipv4_devconf.shared_media || (in_dev)->cnf.shared_media)
61 #define IN_DEV_TX_REDIRECTS(in_dev) (ipv4_devconf.send_redirects || (in_dev)->cnf.send_redirects)
62 #define IN_DEV_SEC_REDIRECTS(in_dev) (ipv4_devconf.secure_redirects || (in_dev)->cnf.secure_redirects)
63 #define IN_DEV_IDTAG(in_dev) ((in_dev)->cnf.tag)
64 #define IN_DEV_MEDIUM_ID(in_dev) ((in_dev)->cnf.medium_id)
66 #define IN_DEV_RX_REDIRECTS(in_dev) \
67 ((IN_DEV_FORWARD(in_dev) && \
68 (ipv4_devconf.accept_redirects && (in_dev)->cnf.accept_redirects)) \
69 || (!IN_DEV_FORWARD(in_dev) && \
70 (ipv4_devconf.accept_redirects || (in_dev)->cnf.accept_redirects)))
72 #define IN_DEV_ARPFILTER(in_dev) (ipv4_devconf.arp_filter || (in_dev)->cnf.arp_filter)
76 struct in_ifaddr
*ifa_next
;
77 struct in_device
*ifa_dev
;
83 unsigned char ifa_scope
;
84 unsigned char ifa_flags
;
85 unsigned char ifa_prefixlen
;
86 char ifa_label
[IFNAMSIZ
];
89 extern int register_inetaddr_notifier(struct notifier_block
*nb
);
90 extern int unregister_inetaddr_notifier(struct notifier_block
*nb
);
92 extern struct net_device
*ip_dev_find(u32 addr
);
93 extern int inet_addr_onlink(struct in_device
*in_dev
, u32 a
, u32 b
);
94 extern int devinet_ioctl(unsigned int cmd
, void *);
95 extern void devinet_init(void);
96 extern struct in_device
*inetdev_init(struct net_device
*dev
);
97 extern struct in_device
*inetdev_by_index(int);
98 extern u32
inet_select_addr(const struct net_device
*dev
, u32 dst
, int scope
);
99 extern struct in_ifaddr
*inet_ifa_byprefix(struct in_device
*in_dev
, u32 prefix
, u32 mask
);
100 extern void inet_forward_change(void);
102 static __inline__
int inet_ifa_match(u32 addr
, struct in_ifaddr
*ifa
)
104 return !((addr
^ifa
->ifa_address
)&ifa
->ifa_mask
);
108 * Check if a mask is acceptable.
111 static __inline__
int bad_mask(u32 mask
, u32 addr
)
113 if (addr
& (mask
= ~mask
))
121 #define for_primary_ifa(in_dev) { struct in_ifaddr *ifa; \
122 for (ifa = (in_dev)->ifa_list; ifa && !(ifa->ifa_flags&IFA_F_SECONDARY); ifa = ifa->ifa_next)
124 #define for_ifa(in_dev) { struct in_ifaddr *ifa; \
125 for (ifa = (in_dev)->ifa_list; ifa; ifa = ifa->ifa_next)
128 #define endfor_ifa(in_dev) }
130 extern rwlock_t inetdev_lock
;
133 static __inline__
struct in_device
*
134 in_dev_get(const struct net_device
*dev
)
136 struct in_device
*in_dev
;
138 read_lock(&inetdev_lock
);
139 in_dev
= dev
->ip_ptr
;
141 atomic_inc(&in_dev
->refcnt
);
142 read_unlock(&inetdev_lock
);
146 static __inline__
struct in_device
*
147 __in_dev_get(const struct net_device
*dev
)
149 return (struct in_device
*)dev
->ip_ptr
;
152 extern void in_dev_finish_destroy(struct in_device
*idev
);
154 static __inline__
void
155 in_dev_put(struct in_device
*idev
)
157 if (atomic_dec_and_test(&idev
->refcnt
))
158 in_dev_finish_destroy(idev
);
161 #define __in_dev_put(idev) atomic_dec(&(idev)->refcnt)
162 #define in_dev_hold(idev) atomic_inc(&(idev)->refcnt)
164 #endif /* __KERNEL__ */
166 static __inline__ __u32
inet_make_mask(int logmask
)
169 return htonl(~((1<<(32-logmask
))-1));
173 static __inline__
int inet_mask_len(__u32 mask
)
175 if (!(mask
= ntohl(mask
)))
177 return 32 - ffz(~mask
);
181 #endif /* _LINUX_INETDEVICE_H */