fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / include / linux / inetdevice.h

diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h
index c23cd45..c0f7aec 100644 (file)
--- a/include/linux/inetdevice.h
+++ b/include/linux/inetdevice.h
@@ -3,6 +3,11 @@
 
 #ifdef __KERNEL__
 
+#include <linux/if.h>
+#include <linux/netdevice.h>
+#include <linux/rcupdate.h>
+#include <linux/timer.h>
+
 struct ipv4_devconf
 {
        int     accept_redirects;
@@ -20,10 +25,12 @@ struct ipv4_devconf
        int     arp_filter;
        int     arp_announce;
        int     arp_ignore;
+       int     arp_accept;
        int     medium_id;
        int     no_xfrm;
        int     no_policy;
        int     force_igmp_version;
+       int     promote_secondaries;
        void    *sysctl;
 };
 
@@ -31,13 +38,13 @@ extern struct ipv4_devconf ipv4_devconf;
 
 struct in_device
 {
-       struct net_device               *dev;
+       struct net_device       *dev;
        atomic_t                refcnt;
-       rwlock_t                lock;
        int                     dead;
        struct in_ifaddr        *ifa_list;      /* IP ifaddr chain              */
+       rwlock_t                mc_list_lock;
        struct ip_mc_list       *mc_list;       /* IP multicast filter chain    */
-       rwlock_t                mc_lock;        /* for mc_tomb */
+       spinlock_t              mc_tomb_lock;
        struct ip_mc_list       *mc_tomb;
        unsigned long           mr_v1_seen;
        unsigned long           mr_v2_seen;
@@ -50,6 +57,7 @@ struct in_device
 
        struct neigh_parms      *arp_parms;
        struct ipv4_devconf     cnf;
+       struct rcu_head         rcu_head;
 };
 
 #define IN_DEV_FORWARD(in_dev)         ((in_dev)->cnf.forwarding)
@@ -65,6 +73,7 @@ struct in_device
 #define IN_DEV_SEC_REDIRECTS(in_dev)   (ipv4_devconf.secure_redirects || (in_dev)->cnf.secure_redirects)
 #define IN_DEV_IDTAG(in_dev)           ((in_dev)->cnf.tag)
 #define IN_DEV_MEDIUM_ID(in_dev)       ((in_dev)->cnf.medium_id)
+#define IN_DEV_PROMOTE_SECONDARIES(in_dev)     (ipv4_devconf.promote_secondaries || (in_dev)->cnf.promote_secondaries)
 
 #define IN_DEV_RX_REDIRECTS(in_dev) \
        ((IN_DEV_FORWARD(in_dev) && \
@@ -80,11 +89,12 @@ struct in_ifaddr
 {
        struct in_ifaddr        *ifa_next;
        struct in_device        *ifa_dev;
-       u32                     ifa_local;
-       u32                     ifa_address;
-       u32                     ifa_mask;
-       u32                     ifa_broadcast;
-       u32                     ifa_anycast;
+       struct rcu_head         rcu_head;
+       __be32                  ifa_local;
+       __be32                  ifa_address;
+       __be32                  ifa_mask;
+       __be32                  ifa_broadcast;
+       __be32                  ifa_anycast;
        unsigned char           ifa_scope;
        unsigned char           ifa_flags;
        unsigned char           ifa_prefixlen;
@@ -94,18 +104,18 @@ struct in_ifaddr
 extern int register_inetaddr_notifier(struct notifier_block *nb);
 extern int unregister_inetaddr_notifier(struct notifier_block *nb);
 
-extern struct net_device       *ip_dev_find(u32 addr);
-extern int             inet_addr_onlink(struct in_device *in_dev, u32 a, u32 b);
-extern int             devinet_ioctl(unsigned int cmd, void *);
+extern struct net_device       *ip_dev_find(__be32 addr);
+extern int             inet_addr_onlink(struct in_device *in_dev, __be32 a, __be32 b);
+extern int             devinet_ioctl(unsigned int cmd, void __user *);
 extern void            devinet_init(void);
 extern struct in_device *inetdev_init(struct net_device *dev);
 extern struct in_device        *inetdev_by_index(int);
-extern u32             inet_select_addr(const struct net_device *dev, u32 dst, int scope);
-extern u32             inet_confirm_addr(const struct net_device *dev, u32 dst, u32 local, int scope);
-extern struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, u32 prefix, u32 mask);
+extern __be32          inet_select_addr(const struct net_device *dev, __be32 dst, int scope);
+extern __be32          inet_confirm_addr(const struct net_device *dev, __be32 dst, __be32 local, int scope);
+extern struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, __be32 prefix, __be32 mask);
 extern void            inet_forward_change(void);
 
-static __inline__ int inet_ifa_match(u32 addr, struct in_ifaddr *ifa)
+static __inline__ int inet_ifa_match(__be32 addr, struct in_ifaddr *ifa)
 {
        return !((addr^ifa->ifa_address)&ifa->ifa_mask);
 }
@@ -114,12 +124,13 @@ static __inline__ int inet_ifa_match(u32 addr, struct in_ifaddr *ifa)
  *     Check if a mask is acceptable.
  */
  
-static __inline__ int bad_mask(u32 mask, u32 addr)
+static __inline__ int bad_mask(__be32 mask, __be32 addr)
 {
+       __u32 hmask;
        if (addr & (mask = ~mask))
                return 1;
-       mask = ntohl(mask);
-       if (mask & (mask+1))
+       hmask = ntohl(mask);
+       if (hmask & (hmask+1))
                return 1;
        return 0;
 }
@@ -133,32 +144,36 @@ static __inline__ int bad_mask(u32 mask, u32 addr)
 
 #define endfor_ifa(in_dev) }
 
-extern rwlock_t inetdev_lock;
-
+static inline struct in_device *__in_dev_get_rcu(const struct net_device *dev)
+{
+       struct in_device *in_dev = dev->ip_ptr;
+       if (in_dev)
+               in_dev = rcu_dereference(in_dev);
+       return in_dev;
+}
 
 static __inline__ struct in_device *
 in_dev_get(const struct net_device *dev)
 {
        struct in_device *in_dev;
 
-       read_lock(&inetdev_lock);
-       in_dev = dev->ip_ptr;
+       rcu_read_lock();
+       in_dev = __in_dev_get_rcu(dev);
        if (in_dev)
                atomic_inc(&in_dev->refcnt);
-       read_unlock(&inetdev_lock);
+       rcu_read_unlock();
        return in_dev;
 }
 
 static __inline__ struct in_device *
-__in_dev_get(const struct net_device *dev)
+__in_dev_get_rtnl(const struct net_device *dev)
 {
        return (struct in_device*)dev->ip_ptr;
 }
 
 extern void in_dev_finish_destroy(struct in_device *idev);
 
-static __inline__ void
-in_dev_put(struct in_device *idev)
+static inline void in_dev_put(struct in_device *idev)
 {
        if (atomic_dec_and_test(&idev->refcnt))
                in_dev_finish_destroy(idev);
@@ -169,18 +184,19 @@ in_dev_put(struct in_device *idev)
 
 #endif /* __KERNEL__ */
 
-static __inline__ __u32 inet_make_mask(int logmask)
+static __inline__ __be32 inet_make_mask(int logmask)
 {
        if (logmask)
                return htonl(~((1<<(32-logmask))-1));
        return 0;
 }
 
-static __inline__ int inet_mask_len(__u32 mask)
+static __inline__ int inet_mask_len(__be32 mask)
 {
-       if (!(mask = ntohl(mask)))
+       __u32 hmask = ntohl(mask);
+       if (!hmask)
                return 0;
-       return 32 - ffz(~mask);
+       return 32 - ffz(~hmask);
 }