patch-2.1.68 linux/include/linux/inetdevice.h

• Lines: 119
• Date: Sun Nov 30 14:00:38 1997
• Orig file: v2.1.67/linux/include/linux/inetdevice.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.67/linux/include/linux/inetdevice.h linux/include/linux/inetdevice.h
@@ -0,0 +1,118 @@
+#ifndef _LINUX_INETDEVICE_H
+#define _LINUX_INETDEVICE_H
+
+/* IPv4 specific flags. They are initialized from global sysctl variables,
+   when IPv4 is initialized.
+ */
+
+#define IFF_IP_FORWARD		1
+#define IFF_IP_PROXYARP		2
+#define IFF_IP_RXREDIRECTS	4
+#define IFF_IP_TXREDIRECTS	8
+#define IFF_IP_SHAREDMEDIA	0x10
+#define IFF_IP_MFORWARD		0x20
+#define IFF_IP_RPFILTER		0x40
+
+#ifdef __KERNEL__
+
+struct in_device
+{
+	struct device		*dev;
+	struct in_ifaddr	*ifa_list;	/* IP ifaddr chain		*/
+	struct ip_mc_list	*mc_list;	/* IP multicast filter chain    */
+	unsigned long		mr_v1_seen;
+	unsigned		flags;
+};
+
+
+#define IN_DEV_RPFILTER(in_dev)	(ipv4_config.rfc1812_filter && ((in_dev)->flags&IFF_IP_RPFILTER))
+#define IN_DEV_MFORWARD(in_dev)	(ipv4_config.multicast_route && ((in_dev)->flags&IFF_IP_MFORWARD))
+#define IN_DEV_PROXY_ARP(in_dev)	((in_dev)->flags&IFF_IP_PROXYARP)
+
+#if 1
+#define IN_DEV_FORWARD(in_dev)		(IS_ROUTER)
+#define IN_DEV_RX_REDIRECTS(in_dev)	(ipv4_config.accept_redirects)
+#define IN_DEV_TX_REDIRECTS(in_dev)	(1)
+#define IN_DEV_SHARED_MEDIA(in_dev)	(ipv4_config.rfc1620_redirects)
+#else
+#define IN_DEV_FORWARD(in_dev)	(ipv4_config.ip_forwarding==1 && ((in_dev)->flags&IFF_IP_FORWARD))
+#define IN_DEV_RX_REDIRECTS(in_dev)	((in_dev)->flags&IFF_IP_RXREDIRECTS)
+#define IN_DEV_TX_REDIRECTS(in_dev)	((in_dev)->flags&IFF_IP_TXREDIRECTS)
+#define IN_DEV_SHARED_MEDIA(in_dev)	((in_dev)->flags&IFF_IP_SHAREDMEDIA)
+#endif
+
+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;
+	unsigned char		ifa_scope;
+	unsigned char		ifa_flags;
+	unsigned char		ifa_prefixlen;
+	char			ifa_label[IFNAMSIZ];
+};
+
+extern int register_inetaddr_notifier(struct notifier_block *nb);
+extern int unregister_inetaddr_notifier(struct notifier_block *nb);
+
+extern struct device 	*ip_dev_find(u32 addr);
+extern struct in_ifaddr	*inet_addr_onlink(struct in_device *in_dev, u32 a, u32 b);
+extern int		devinet_ioctl(unsigned int cmd, void *);
+extern void		devinet_init(void);
+extern struct in_device *inetdev_init(struct device *dev);
+extern struct in_device	*inetdev_by_index(int);
+extern u32		inet_select_addr(struct device *dev, u32 dst, int scope);
+extern struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, u32 prefix, u32 mask);
+extern int		inet_add_bootp_addr(struct device *dev);
+extern void		inet_del_bootp_addr(struct device *dev);
+
+extern __inline__ int inet_ifa_match(u32 addr, struct in_ifaddr *ifa)
+{
+	return !((addr^ifa->ifa_address)&ifa->ifa_mask);
+}
+
+/*
+ *	Check if a mask is acceptable.
+ */
+ 
+extern __inline__ int bad_mask(u32 mask, u32 addr)
+{
+	if (addr & (mask = ~mask))
+		return 1;
+	mask = ntohl(mask);
+	if (mask & (mask+1))
+		return 1;
+	return 0;
+}
+
+#define for_primary_ifa(in_dev)	{ struct in_ifaddr *ifa; \
+  for (ifa = (in_dev)->ifa_list; ifa && !(ifa->ifa_flags&IFA_F_SECONDARY); ifa = ifa->ifa_next)
+
+#define for_ifa(in_dev)	{ struct in_ifaddr *ifa; \
+  for (ifa = (in_dev)->ifa_list; ifa; ifa = ifa->ifa_next)
+
+
+#define endfor_ifa(in_dev) }
+
+#endif /* __KERNEL__ */
+
+extern __inline__ __u32 inet_make_mask(int logmask)
+{
+	if (logmask)
+		return htonl(~((1<<(32-logmask))-1));
+	return 0;
+}
+
+extern __inline__ int inet_mask_len(__u32 mask)
+{
+	if (!(mask = ntohl(mask)))
+		return 0;
+	return 32 - ffz(~mask);
+}
+
+
+#endif /* _LINUX_INETDEVICE_H */