Bug fixes
[cbs-scheduler.git] / include / linux / inetdevice.h
blob06fcdb45106bb1a39c5c7606345cd3c0d8487743
1 #ifndef _LINUX_INETDEVICE_H
2 #define _LINUX_INETDEVICE_H
4 #ifdef __KERNEL__
6 #include <linux/bitmap.h>
7 #include <linux/if.h>
8 #include <linux/netdevice.h>
9 #include <linux/rcupdate.h>
10 #include <linux/timer.h>
11 #include <linux/sysctl.h>
13 struct ipv4_devconf
15 void *sysctl;
16 int data[__NET_IPV4_CONF_MAX - 1];
17 DECLARE_BITMAP(state, __NET_IPV4_CONF_MAX - 1);
20 struct in_device
22 struct net_device *dev;
23 atomic_t refcnt;
24 int dead;
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;
34 unsigned char mr_qrv;
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)
51 index--;
52 return in_dev->cnf.data[index];
55 static inline void ipv4_devconf_set(struct in_device *in_dev, int index,
56 int val)
58 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_ANDCONF((in_dev), RP_FILTER)
86 #define IN_DEV_SOURCE_ROUTE(in_dev) IN_DEV_ANDCONF((in_dev), \
87 ACCEPT_SOURCE_ROUTE)
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), \
95 SECURE_REDIRECTS)
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), \
100 PROMOTE_SECONDARIES)
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)
112 struct in_ifaddr
114 struct in_ifaddr *ifa_next;
115 struct in_device *ifa_dev;
116 struct rcu_head rcu_head;
117 __be32 ifa_local;
118 __be32 ifa_address;
119 __be32 ifa_mask;
120 __be32 ifa_broadcast;
121 unsigned char ifa_scope;
122 unsigned char ifa_flags;
123 unsigned char ifa_prefixlen;
124 char ifa_label[IFNAMSIZ];
127 extern int register_inetaddr_notifier(struct notifier_block *nb);
128 extern int unregister_inetaddr_notifier(struct notifier_block *nb);
130 extern struct net_device *ip_dev_find(struct net *net, __be32 addr);
131 extern int inet_addr_onlink(struct in_device *in_dev, __be32 a, __be32 b);
132 extern int devinet_ioctl(struct net *net, unsigned int cmd, void __user *);
133 extern void devinet_init(void);
134 extern struct in_device *inetdev_by_index(struct net *, int);
135 extern __be32 inet_select_addr(const struct net_device *dev, __be32 dst, int scope);
136 extern __be32 inet_confirm_addr(struct in_device *in_dev, __be32 dst, __be32 local, int scope);
137 extern struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, __be32 prefix, __be32 mask);
139 static __inline__ int inet_ifa_match(__be32 addr, struct in_ifaddr *ifa)
141 return !((addr^ifa->ifa_address)&ifa->ifa_mask);
145 * Check if a mask is acceptable.
148 static __inline__ int bad_mask(__be32 mask, __be32 addr)
150 __u32 hmask;
151 if (addr & (mask = ~mask))
152 return 1;
153 hmask = ntohl(mask);
154 if (hmask & (hmask+1))
155 return 1;
156 return 0;
159 #define for_primary_ifa(in_dev) { struct in_ifaddr *ifa; \
160 for (ifa = (in_dev)->ifa_list; ifa && !(ifa->ifa_flags&IFA_F_SECONDARY); ifa = ifa->ifa_next)
162 #define for_ifa(in_dev) { struct in_ifaddr *ifa; \
163 for (ifa = (in_dev)->ifa_list; ifa; ifa = ifa->ifa_next)
166 #define endfor_ifa(in_dev) }
168 static inline struct in_device *__in_dev_get_rcu(const struct net_device *dev)
170 struct in_device *in_dev = dev->ip_ptr;
171 if (in_dev)
172 in_dev = rcu_dereference(in_dev);
173 return in_dev;
176 static __inline__ struct in_device *
177 in_dev_get(const struct net_device *dev)
179 struct in_device *in_dev;
181 rcu_read_lock();
182 in_dev = __in_dev_get_rcu(dev);
183 if (in_dev)
184 atomic_inc(&in_dev->refcnt);
185 rcu_read_unlock();
186 return in_dev;
189 static __inline__ struct in_device *
190 __in_dev_get_rtnl(const struct net_device *dev)
192 return (struct in_device*)dev->ip_ptr;
195 extern void in_dev_finish_destroy(struct in_device *idev);
197 static inline void in_dev_put(struct in_device *idev)
199 if (atomic_dec_and_test(&idev->refcnt))
200 in_dev_finish_destroy(idev);
203 #define __in_dev_put(idev) atomic_dec(&(idev)->refcnt)
204 #define in_dev_hold(idev) atomic_inc(&(idev)->refcnt)
206 #endif /* __KERNEL__ */
208 static __inline__ __be32 inet_make_mask(int logmask)
210 if (logmask)
211 return htonl(~((1<<(32-logmask))-1));
212 return 0;
215 static __inline__ int inet_mask_len(__be32 mask)
217 __u32 hmask = ntohl(mask);
218 if (!hmask)
219 return 0;
220 return 32 - ffz(~hmask);
224 #endif /* _LINUX_INETDEVICE_H */