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>
15 IPV4_DEVCONF_FORWARDING=1,
16 IPV4_DEVCONF_MC_FORWARDING,
17 IPV4_DEVCONF_PROXY_ARP,
18 IPV4_DEVCONF_ACCEPT_REDIRECTS,
19 IPV4_DEVCONF_SECURE_REDIRECTS,
20 IPV4_DEVCONF_SEND_REDIRECTS,
21 IPV4_DEVCONF_SHARED_MEDIA,
22 IPV4_DEVCONF_RP_FILTER,
23 IPV4_DEVCONF_ACCEPT_SOURCE_ROUTE,
24 IPV4_DEVCONF_BOOTP_RELAY,
25 IPV4_DEVCONF_LOG_MARTIANS,
27 IPV4_DEVCONF_ARPFILTER,
28 IPV4_DEVCONF_MEDIUM_ID,
30 IPV4_DEVCONF_NOPOLICY,
31 IPV4_DEVCONF_FORCE_IGMP_VERSION,
32 IPV4_DEVCONF_ARP_ANNOUNCE,
33 IPV4_DEVCONF_ARP_IGNORE,
34 IPV4_DEVCONF_PROMOTE_SECONDARIES,
35 IPV4_DEVCONF_ARP_ACCEPT,
36 IPV4_DEVCONF_ARP_NOTIFY,
37 IPV4_DEVCONF_ACCEPT_LOCAL,
38 IPV4_DEVCONF_SRC_VMARK,
39 IPV4_DEVCONF_PROXY_ARP_PVLAN,
45 int data[__IPV4_DEVCONF_MAX - 1];
46 DECLARE_BITMAP(state, __IPV4_DEVCONF_MAX - 1);
50 struct net_device *dev;
53 struct in_ifaddr *ifa_list; /* IP ifaddr chain */
54 rwlock_t mc_list_lock;
55 struct ip_mc_list *mc_list; /* IP multicast filter chain */
56 int mc_count; /* Number of installed mcasts */
57 spinlock_t mc_tomb_lock;
58 struct ip_mc_list *mc_tomb;
59 unsigned long mr_v1_seen;
60 unsigned long mr_v2_seen;
61 unsigned long mr_maxdelay;
63 unsigned char mr_gq_running;
64 unsigned char mr_ifc_count;
65 struct timer_list mr_gq_timer; /* general query timer */
66 struct timer_list mr_ifc_timer; /* interface change timer */
68 struct neigh_parms *arp_parms;
69 struct ipv4_devconf cnf;
70 struct rcu_head rcu_head;
73 #define IPV4_DEVCONF(cnf, attr) ((cnf).data[IPV4_DEVCONF_ ## attr - 1])
74 #define IPV4_DEVCONF_ALL(net, attr) \
75 IPV4_DEVCONF((*(net)->ipv4.devconf_all), attr)
77 static inline int ipv4_devconf_get(struct in_device *in_dev, int index)
80 return in_dev->cnf.data[index];
83 static inline void ipv4_devconf_set(struct in_device *in_dev, int index,
87 set_bit(index, in_dev->cnf.state);
88 in_dev->cnf.data[index] = val;
91 static inline void ipv4_devconf_setall(struct in_device *in_dev)
93 bitmap_fill(in_dev->cnf.state, __IPV4_DEVCONF_MAX - 1);
96 #define IN_DEV_CONF_GET(in_dev, attr) \
97 ipv4_devconf_get((in_dev), IPV4_DEVCONF_ ## attr)
98 #define IN_DEV_CONF_SET(in_dev, attr, val) \
99 ipv4_devconf_set((in_dev), IPV4_DEVCONF_ ## attr, (val))
101 #define IN_DEV_ANDCONF(in_dev, attr) \
102 (IPV4_DEVCONF_ALL(dev_net(in_dev->dev), attr) && \
103 IN_DEV_CONF_GET((in_dev), attr))
104 #define IN_DEV_ORCONF(in_dev, attr) \
105 (IPV4_DEVCONF_ALL(dev_net(in_dev->dev), attr) || \
106 IN_DEV_CONF_GET((in_dev), attr))
107 #define IN_DEV_MAXCONF(in_dev, attr) \
108 (max(IPV4_DEVCONF_ALL(dev_net(in_dev->dev), attr), \
109 IN_DEV_CONF_GET((in_dev), attr)))
111 #define IN_DEV_FORWARD(in_dev) IN_DEV_CONF_GET((in_dev), FORWARDING)
112 #define IN_DEV_MFORWARD(in_dev) IN_DEV_ANDCONF((in_dev), MC_FORWARDING)
113 #define IN_DEV_RPFILTER(in_dev) IN_DEV_MAXCONF((in_dev), RP_FILTER)
114 #define IN_DEV_SRC_VMARK(in_dev) IN_DEV_ORCONF((in_dev), SRC_VMARK)
115 #define IN_DEV_SOURCE_ROUTE(in_dev) IN_DEV_ANDCONF((in_dev), \
117 #define IN_DEV_ACCEPT_LOCAL(in_dev) IN_DEV_ORCONF((in_dev), ACCEPT_LOCAL)
118 #define IN_DEV_BOOTP_RELAY(in_dev) IN_DEV_ANDCONF((in_dev), BOOTP_RELAY)
120 #define IN_DEV_LOG_MARTIANS(in_dev) IN_DEV_ORCONF((in_dev), LOG_MARTIANS)
121 #define IN_DEV_PROXY_ARP(in_dev) IN_DEV_ORCONF((in_dev), PROXY_ARP)
122 #define IN_DEV_PROXY_ARP_PVLAN(in_dev) IN_DEV_CONF_GET(in_dev, PROXY_ARP_PVLAN)
123 #define IN_DEV_SHARED_MEDIA(in_dev) IN_DEV_ORCONF((in_dev), SHARED_MEDIA)
124 #define IN_DEV_TX_REDIRECTS(in_dev) IN_DEV_ORCONF((in_dev), SEND_REDIRECTS)
125 #define IN_DEV_SEC_REDIRECTS(in_dev) IN_DEV_ORCONF((in_dev), \
127 #define IN_DEV_IDTAG(in_dev) IN_DEV_CONF_GET(in_dev, TAG)
128 #define IN_DEV_MEDIUM_ID(in_dev) IN_DEV_CONF_GET(in_dev, MEDIUM_ID)
129 #define IN_DEV_PROMOTE_SECONDARIES(in_dev) \
130 IN_DEV_ORCONF((in_dev), \
133 #define IN_DEV_RX_REDIRECTS(in_dev) \
134 ((IN_DEV_FORWARD(in_dev) && \
135 IN_DEV_ANDCONF((in_dev), ACCEPT_REDIRECTS)) \
136 || (!IN_DEV_FORWARD(in_dev) && \
137 IN_DEV_ORCONF((in_dev), ACCEPT_REDIRECTS)))
139 #define IN_DEV_ARPFILTER(in_dev) IN_DEV_ORCONF((in_dev), ARPFILTER)
140 #define IN_DEV_ARP_ANNOUNCE(in_dev) IN_DEV_MAXCONF((in_dev), ARP_ANNOUNCE)
141 #define IN_DEV_ARP_IGNORE(in_dev) IN_DEV_MAXCONF((in_dev), ARP_IGNORE)
142 #define IN_DEV_ARP_NOTIFY(in_dev) IN_DEV_MAXCONF((in_dev), ARP_NOTIFY)
145 struct in_ifaddr *ifa_next;
146 struct in_device *ifa_dev;
147 struct rcu_head rcu_head;
151 __be32 ifa_broadcast;
152 unsigned char ifa_scope;
153 unsigned char ifa_flags;
154 unsigned char ifa_prefixlen;
155 char ifa_label[IFNAMSIZ];
158 extern int register_inetaddr_notifier(struct notifier_block *nb);
159 extern int unregister_inetaddr_notifier(struct notifier_block *nb);
161 extern struct net_device *ip_dev_find(struct net *net, __be32 addr);
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 struct in_device *in_dev = dev->ip_ptr;
203 in_dev = rcu_dereference(in_dev);
207 static __inline__ struct in_device *
208 in_dev_get(const struct net_device *dev)
210 struct in_device *in_dev;
213 in_dev = __in_dev_get_rcu(dev);
215 atomic_inc(&in_dev->refcnt);
220 static __inline__ struct in_device *
221 __in_dev_get_rtnl(const struct net_device *dev)
223 return (struct in_device*)dev->ip_ptr;
226 extern void in_dev_finish_destroy(struct in_device *idev);
228 static inline void in_dev_put(struct in_device *idev)
230 if (atomic_dec_and_test(&idev->refcnt))
231 in_dev_finish_destroy(idev);
234 #define __in_dev_put(idev) atomic_dec(&(idev)->refcnt)
235 #define in_dev_hold(idev) atomic_inc(&(idev)->refcnt)
237 #endif /* __KERNEL__ */
239 static __inline__ __be32 inet_make_mask(int logmask)
242 return htonl(~((1<<(32-logmask))-1));
246 static __inline__ int inet_mask_len(__be32 mask)
248 __u32 hmask = ntohl(mask);
251 return 32 - ffz(~hmask);
255 #endif /* _LINUX_INETDEVICE_H */