[deliverable/linux.git] / include / linux / if_packet.h

#ifndef __LINUX_IF_PACKET_H
#define __LINUX_IF_PACKET_H

#include <linux/types.h>

struct sockaddr_pkt
{
	unsigned short spkt_family;
	unsigned char spkt_device[14];
	__be16 spkt_protocol;
};

struct sockaddr_ll
{
	unsigned short	sll_family;
	__be16		sll_protocol;
	int		sll_ifindex;
	unsigned short	sll_hatype;
	unsigned char	sll_pkttype;
	unsigned char	sll_halen;
	unsigned char	sll_addr[8];
};

/* Packet types */

#define PACKET_HOST		0		/* To us		*/
#define PACKET_BROADCAST	1		/* To all		*/
#define PACKET_MULTICAST	2		/* To group		*/
#define PACKET_OTHERHOST	3		/* To someone else 	*/
#define PACKET_OUTGOING		4		/* Outgoing of any type */
/* These ones are invisible by user level */
#define PACKET_LOOPBACK		5		/* MC/BRD frame looped back */
#define PACKET_FASTROUTE	6		/* Fastrouted frame	*/

/* Packet socket options */

#define PACKET_ADD_MEMBERSHIP		1
#define PACKET_DROP_MEMBERSHIP		2
#define PACKET_RECV_OUTPUT		3
/* Value 4 is still used by obsolete turbo-packet. */
#define PACKET_RX_RING			5
#define PACKET_STATISTICS		6
#define PACKET_COPY_THRESH		7
#define PACKET_AUXDATA			8

struct tpacket_stats
{
	unsigned int	tp_packets;
	unsigned int	tp_drops;
};

struct tpacket_auxdata
{
	__u32		tp_status;
	__u32		tp_len;
	__u32		tp_snaplen;
	__u16		tp_mac;
	__u16		tp_net;
};

struct tpacket_hdr
{
	unsigned long	tp_status;
#define TP_STATUS_KERNEL	0
#define TP_STATUS_USER		1
#define TP_STATUS_COPY		2
#define TP_STATUS_LOSING	4
#define TP_STATUS_CSUMNOTREADY	8
	unsigned int	tp_len;
	unsigned int	tp_snaplen;
	unsigned short	tp_mac;
	unsigned short	tp_net;
	unsigned int	tp_sec;
	unsigned int	tp_usec;
};

#define TPACKET_ALIGNMENT	16
#define TPACKET_ALIGN(x)	(((x)+TPACKET_ALIGNMENT-1)&~(TPACKET_ALIGNMENT-1))
#define TPACKET_HDRLEN		(TPACKET_ALIGN(sizeof(struct tpacket_hdr)) + sizeof(struct sockaddr_ll))

/*
   Frame structure:

   - Start. Frame must be aligned to TPACKET_ALIGNMENT=16
   - struct tpacket_hdr
   - pad to TPACKET_ALIGNMENT=16
   - struct sockaddr_ll
   - Gap, chosen so that packet data (Start+tp_net) alignes to TPACKET_ALIGNMENT=16
   - Start+tp_mac: [ Optional MAC header ]
   - Start+tp_net: Packet data, aligned to TPACKET_ALIGNMENT=16.
   - Pad to align to TPACKET_ALIGNMENT=16
 */

struct tpacket_req
{
	unsigned int	tp_block_size;	/* Minimal size of contiguous block */
	unsigned int	tp_block_nr;	/* Number of blocks */
	unsigned int	tp_frame_size;	/* Size of frame */
	unsigned int	tp_frame_nr;	/* Total number of frames */
};

struct packet_mreq
{
	int		mr_ifindex;
	unsigned short	mr_type;
	unsigned short	mr_alen;
	unsigned char	mr_address[8];
};

#define PACKET_MR_MULTICAST	0
#define PACKET_MR_PROMISC	1
#define PACKET_MR_ALLMULTI	2

#endif
Commit	Line	Data
1da177e4 LT	1	#ifndef __LINUX_IF_PACKET_H
	2	#define __LINUX_IF_PACKET_H
	3
0e11c91e AV	4	#include <linux/types.h>
0e11c91e AV	5
1da177e4 LT	6	struct sockaddr_pkt
	7	{
	8	unsigned short spkt_family;
	9	unsigned char spkt_device[14];
0e11c91e	10	__be16 spkt_protocol;
1da177e4 LT	11	};
	12
	13	struct sockaddr_ll
	14	{
	15	unsigned short sll_family;
0e11c91e	16	__be16 sll_protocol;
1da177e4 LT	17	int sll_ifindex;
	18	unsigned short sll_hatype;
	19	unsigned char sll_pkttype;
	20	unsigned char sll_halen;
	21	unsigned char sll_addr[8];
	22	};
	23
	24	/* Packet types */
	25
	26	#define PACKET_HOST 0 /* To us */
	27	#define PACKET_BROADCAST 1 /* To all */
	28	#define PACKET_MULTICAST 2 /* To group */
	29	#define PACKET_OTHERHOST 3 /* To someone else */
	30	#define PACKET_OUTGOING 4 /* Outgoing of any type */
	31	/* These ones are invisible by user level */
	32	#define PACKET_LOOPBACK 5 /* MC/BRD frame looped back */
	33	#define PACKET_FASTROUTE 6 /* Fastrouted frame */
	34
	35	/* Packet socket options */
	36
	37	#define PACKET_ADD_MEMBERSHIP 1
	38	#define PACKET_DROP_MEMBERSHIP 2
	39	#define PACKET_RECV_OUTPUT 3
	40	/* Value 4 is still used by obsolete turbo-packet. */
	41	#define PACKET_RX_RING 5
	42	#define PACKET_STATISTICS 6
	43	#define PACKET_COPY_THRESH 7
8dc41944	44	#define PACKET_AUXDATA 8
1da177e4 LT	45
	46	struct tpacket_stats
	47	{
	48	unsigned int tp_packets;
	49	unsigned int tp_drops;
	50	};
	51
8dc41944 HX	52	struct tpacket_auxdata
	53	{
	54	__u32 tp_status;
	55	__u32 tp_len;
	56	__u32 tp_snaplen;
	57	__u16 tp_mac;
	58	__u16 tp_net;
	59	};
	60
1da177e4 LT	61	struct tpacket_hdr
	62	{
	63	unsigned long tp_status;
	64	#define TP_STATUS_KERNEL 0
	65	#define TP_STATUS_USER 1
	66	#define TP_STATUS_COPY 2
	67	#define TP_STATUS_LOSING 4
	68	#define TP_STATUS_CSUMNOTREADY 8
	69	unsigned int tp_len;
	70	unsigned int tp_snaplen;
	71	unsigned short tp_mac;
	72	unsigned short tp_net;
	73	unsigned int tp_sec;
	74	unsigned int tp_usec;
	75	};
	76
	77	#define TPACKET_ALIGNMENT 16
	78	#define TPACKET_ALIGN(x) (((x)+TPACKET_ALIGNMENT-1)&~(TPACKET_ALIGNMENT-1))
	79	#define TPACKET_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket_hdr)) + sizeof(struct sockaddr_ll))
	80
	81	/*
	82	Frame structure:
	83
	84	- Start. Frame must be aligned to TPACKET_ALIGNMENT=16
	85	- struct tpacket_hdr
	86	- pad to TPACKET_ALIGNMENT=16
	87	- struct sockaddr_ll
	88	- Gap, chosen so that packet data (Start+tp_net) alignes to TPACKET_ALIGNMENT=16
	89	- Start+tp_mac: [ Optional MAC header ]
	90	- Start+tp_net: Packet data, aligned to TPACKET_ALIGNMENT=16.
	91	- Pad to align to TPACKET_ALIGNMENT=16
	92	*/
	93
	94	struct tpacket_req
	95	{
	96	unsigned int tp_block_size; /* Minimal size of contiguous block */
	97	unsigned int tp_block_nr; /* Number of blocks */
	98	unsigned int tp_frame_size; /* Size of frame */
	99	unsigned int tp_frame_nr; /* Total number of frames */
	100	};
	101
	102	struct packet_mreq
	103	{
	104	int mr_ifindex;
	105	unsigned short mr_type;
	106	unsigned short mr_alen;
	107	unsigned char mr_address[8];
	108	};
	109
	110	#define PACKET_MR_MULTICAST 0
	111	#define PACKET_MR_PROMISC 1
	112	#define PACKET_MR_ALLMULTI 2
	113
	114	#endif