patch-2.1.30 linux/include/net/flow.h

• Lines: 96
• Date: Thu Mar 20 18:17:12 1997
• Orig file: v2.1.29/linux/include/net/flow.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.29/linux/include/net/flow.h linux/include/net/flow.h
@@ -0,0 +1,95 @@
+/*
+ *
+ *	Flow based forwarding rules (usage: firewalling, etc)
+ *
+ */
+
+#ifndef _NET_FLOW_H
+#define _NET_FLOW_H
+
+struct flowi {
+	int	proto;		/*	{TCP, UDP, ICMP}	*/
+
+	union {
+		struct {
+			__u32			daddr;
+			__u32			saddr;
+		} ip4_u;
+		
+		struct {
+			struct in6_addr *	daddr;
+			struct in6_addr *	saddr;
+		} ip6_u;
+	} nl_u;
+
+	struct device	*dev;
+
+	union {
+		struct {
+			__u16	sport;
+			__u16	dport;
+		} ports;
+
+		struct {
+			__u8	type;
+			__u8	code;
+		} icmpt;
+
+		unsigned long	data;
+	} uli_u;
+};
+
+#define FLOWR_NODECISION	0	/* rule not appliable to flow	*/
+#define FLOWR_SELECT		1	/* flow must follow this rule	*/
+#define FLOWR_CLEAR		2	/* priority level clears flow	*/
+#define FLOWR_ERROR		3
+
+struct fl_acc_args {
+	int	type;
+
+
+#define FL_ARG_FORWARD	1
+#define FL_ARG_ORIGIN	2
+
+	union {
+		struct sk_buff		*skb;
+		struct {
+			struct sock	*sk;
+			struct flowi	*flow;
+		} fl_o;
+	} fl_u;
+};
+
+
+struct pkt_filter {
+	atomic_t		refcnt;
+	unsigned int		offset;
+	__u32			value;
+	__u32			mask;
+	struct pkt_filter	*next;
+};
+
+#define FLR_INPUT		1
+#define FLR_OUTPUT		2
+
+struct flow_filter {
+	int				type;
+	union {
+		struct pkt_filter	*filter;
+		struct sock		*sk;
+	} u;
+};
+
+struct flow_rule {
+	struct flow_rule_ops		*ops;
+	unsigned char			private[0];
+};
+
+struct flow_rule_ops {
+	int			(*accept)(struct rt6_info *rt,
+					  struct rt6_info *rule,
+					  struct fl_acc_args *args,
+					  struct rt6_info **nrt);
+};
+
+#endif