[deliverable/linux.git] / include / net / ipip.h

#ifndef __NET_IPIP_H
#define __NET_IPIP_H 1

#include <linux/if_tunnel.h>
#include <net/ip.h>

/* Keep error state on tunnel for 30 sec */
#define IPTUNNEL_ERR_TIMEO	(30*HZ)

struct ip_tunnel
{
	struct ip_tunnel	*next;
	struct net_device	*dev;

	int			recursion;	/* Depth of hard_start_xmit recursion */
	int			err_count;	/* Number of arrived ICMP errors */
	unsigned long		err_time;	/* Time when the last ICMP error arrived */

	/* These four fields used only by GRE */
	__u32			i_seqno;	/* The last seen seqno	*/
	__u32			o_seqno;	/* The last output seqno */
	int			hlen;		/* Precalculated GRE header length */
	int			mlink;

	struct ip_tunnel_parm	parms;

	struct ip_tunnel_prl_entry	*prl;		/* potential router list */
	unsigned int			prl_count;	/* # of entries in PRL */
};

/* ISATAP: default interval between RS in secondy */
#define IPTUNNEL_RS_DEFAULT_DELAY	(900)

struct ip_tunnel_prl_entry
{
	struct ip_tunnel_prl_entry	*next;
	__be32				addr;
	u16				flags;
	unsigned long			rs_delay;
	struct timer_list		rs_timer;
	struct ip_tunnel		*tunnel;
	spinlock_t			lock;
};

#define IPTUNNEL_XMIT() do {						\
	int err;							\
	int pkt_len = skb->len - skb_transport_offset(skb);		\
									\
	skb->ip_summed = CHECKSUM_NONE;					\
	ip_select_ident(iph, &rt->u.dst, NULL);				\
									\
	err = ip_local_out(skb);					\
	if (net_xmit_eval(err) == 0) {					\
		stats->tx_bytes += pkt_len;				\
		stats->tx_packets++;					\
	} else {							\
		stats->tx_errors++;					\
		stats->tx_aborted_errors++;				\
	}								\
} while (0)

#endif
Commit	Line	Data
1da177e4 LT	1	#ifndef __NET_IPIP_H
	2	#define __NET_IPIP_H 1
	3
	4	#include <linux/if_tunnel.h>
c439cb2e	5	#include <net/ip.h>
1da177e4 LT	6
	7	/* Keep error state on tunnel for 30 sec */
	8	#define IPTUNNEL_ERR_TIMEO (30*HZ)
	9
	10	struct ip_tunnel
	11	{
	12	struct ip_tunnel *next;
	13	struct net_device *dev;
1da177e4 LT	14
	15	int recursion; /* Depth of hard_start_xmit recursion */
	16	int err_count; /* Number of arrived ICMP errors */
	17	unsigned long err_time; /* Time when the last ICMP error arrived */
	18
	19	/* These four fields used only by GRE */
	20	__u32 i_seqno; /* The last seen seqno */
	21	__u32 o_seqno; /* The last output seqno */
	22	int hlen; /* Precalculated GRE header length */
	23	int mlink;
	24
	25	struct ip_tunnel_parm parms;
300aaeea	26
fadf6bf0	27	struct ip_tunnel_prl_entry prl; / potential router list */
300aaeea	28	unsigned int prl_count; /* # of entries in PRL */
fadf6bf0 TF	29	};
fadf6bf0 TF	30
64506929 SH	31	/* ISATAP: default interval between RS in secondy */
	32	#define IPTUNNEL_RS_DEFAULT_DELAY (900)
	33
fadf6bf0 TF	34	struct ip_tunnel_prl_entry
	35	{
	36	struct ip_tunnel_prl_entry *next;
300aaeea YH	37	__be32 addr;
300aaeea YH	38	u16 flags;
64506929 SH	39	unsigned long rs_delay;
	40	struct timer_list rs_timer;
	41	struct ip_tunnel *tunnel;
	42	spinlock_t lock;
1da177e4 LT	43	};
	44
	45	#define IPTUNNEL_XMIT() do { \
	46	int err; \
64194c31	47	int pkt_len = skb->len - skb_transport_offset(skb); \
1da177e4 LT	48	\
1da177e4 LT	49	skb->ip_summed = CHECKSUM_NONE; \
1da177e4	50	ip_select_ident(iph, &rt->u.dst, NULL); \
1da177e4	51	\
c439cb2e	52	err = ip_local_out(skb); \
b9df3cb8	53	if (net_xmit_eval(err) == 0) { \
1da177e4 LT	54	stats->tx_bytes += pkt_len; \
	55	stats->tx_packets++; \
	56	} else { \
	57	stats->tx_errors++; \
	58	stats->tx_aborted_errors++; \
	59	} \
	60	} while (0)
	61
1da177e4	62	#endif