[linux-2.6-block.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
#define PACKET_ORIGDEV			9
#define PACKET_VERSION			10
#define PACKET_HDRLEN			11
#define PACKET_RESERVE			12
#define PACKET_TX_RING			13
#define PACKET_LOSS			14
#define PACKET_VNET_HDR			15
#define PACKET_TX_TIMESTAMP		16
#define PACKET_TIMESTAMP		17
#define PACKET_FANOUT			18

#define PACKET_FANOUT_HASH		0
#define PACKET_FANOUT_LB		1
#define PACKET_FANOUT_CPU		2
#define PACKET_FANOUT_FLAG_DEFRAG	0x8000

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;
	__u16		tp_vlan_tci;
	__u16		tp_padding;
};

/* Rx ring - header status */
#define TP_STATUS_KERNEL	0x0
#define TP_STATUS_USER		0x1
#define TP_STATUS_COPY		0x2
#define TP_STATUS_LOSING	0x4
#define TP_STATUS_CSUMNOTREADY	0x8
#define TP_STATUS_VLAN_VALID   0x10 /* auxdata has valid tp_vlan_tci */

/* Tx ring - header status */
#define TP_STATUS_AVAILABLE	0x0
#define TP_STATUS_SEND_REQUEST	0x1
#define TP_STATUS_SENDING	0x2
#define TP_STATUS_WRONG_FORMAT	0x4

struct tpacket_hdr {
	unsigned long	tp_status;
	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))

struct tpacket2_hdr {
	__u32		tp_status;
	__u32		tp_len;
	__u32		tp_snaplen;
	__u16		tp_mac;
	__u16		tp_net;
	__u32		tp_sec;
	__u32		tp_nsec;
	__u16		tp_vlan_tci;
	__u16		tp_padding;
};

#define TPACKET2_HDRLEN		(TPACKET_ALIGN(sizeof(struct tpacket2_hdr)) + sizeof(struct sockaddr_ll))

enum tpacket_versions {
	TPACKET_V1,
	TPACKET_V2,
};

/*
   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
#define PACKET_MR_UNICAST	3

#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
d94d9fee	6	struct sockaddr_pkt {
1da177e4 LT	7	unsigned short spkt_family;
1da177e4 LT	8	unsigned char spkt_device[14];
0e11c91e	9	__be16 spkt_protocol;
1da177e4 LT	10	};
1da177e4 LT	11
d94d9fee	12	struct sockaddr_ll {
1da177e4	13	unsigned short sll_family;
0e11c91e	14	__be16 sll_protocol;
1da177e4 LT	15	int sll_ifindex;
	16	unsigned short sll_hatype;
	17	unsigned char sll_pkttype;
	18	unsigned char sll_halen;
	19	unsigned char sll_addr[8];
	20	};
	21
	22	/* Packet types */
	23
	24	#define PACKET_HOST 0 /* To us */
	25	#define PACKET_BROADCAST 1 /* To all */
	26	#define PACKET_MULTICAST 2 /* To group */
	27	#define PACKET_OTHERHOST 3 /* To someone else */
	28	#define PACKET_OUTGOING 4 /* Outgoing of any type */
	29	/* These ones are invisible by user level */
	30	#define PACKET_LOOPBACK 5 /* MC/BRD frame looped back */
	31	#define PACKET_FASTROUTE 6 /* Fastrouted frame */
	32
	33	/* Packet socket options */
	34
	35	#define PACKET_ADD_MEMBERSHIP 1
	36	#define PACKET_DROP_MEMBERSHIP 2
	37	#define PACKET_RECV_OUTPUT 3
	38	/* Value 4 is still used by obsolete turbo-packet. */
	39	#define PACKET_RX_RING 5
	40	#define PACKET_STATISTICS 6
	41	#define PACKET_COPY_THRESH 7
8dc41944	42	#define PACKET_AUXDATA 8
80feaacb	43	#define PACKET_ORIGDEV 9
bbd6ef87 PM	44	#define PACKET_VERSION 10
bbd6ef87 PM	45	#define PACKET_HDRLEN 11
8913336a	46	#define PACKET_RESERVE 12
69e3c75f JB	47	#define PACKET_TX_RING 13
69e3c75f JB	48	#define PACKET_LOSS 14
bfd5f4a3	49	#define PACKET_VNET_HDR 15
ed85b565	50	#define PACKET_TX_TIMESTAMP 16
614f60fa	51	#define PACKET_TIMESTAMP 17
dc99f600 DM	52	#define PACKET_FANOUT 18
	53
	54	#define PACKET_FANOUT_HASH 0
	55	#define PACKET_FANOUT_LB 1
95ec3eb4	56	#define PACKET_FANOUT_CPU 2
7736d33f	57	#define PACKET_FANOUT_FLAG_DEFRAG 0x8000
1da177e4	58
d94d9fee	59	struct tpacket_stats {
1da177e4 LT	60	unsigned int tp_packets;
	61	unsigned int tp_drops;
	62	};
	63
d94d9fee	64	struct tpacket_auxdata {
8dc41944 HX	65	__u32 tp_status;
	66	__u32 tp_len;
	67	__u32 tp_snaplen;
	68	__u16 tp_mac;
	69	__u16 tp_net;
393e52e3	70	__u16 tp_vlan_tci;
13fcb7bd	71	__u16 tp_padding;
8dc41944 HX	72	};
8dc41944 HX	73
69e3c75f JB	74	/* Rx ring - header status */
	75	#define TP_STATUS_KERNEL 0x0
	76	#define TP_STATUS_USER 0x1
	77	#define TP_STATUS_COPY 0x2
	78	#define TP_STATUS_LOSING 0x4
	79	#define TP_STATUS_CSUMNOTREADY 0x8
a3bcc23e	80	#define TP_STATUS_VLAN_VALID 0x10 /* auxdata has valid tp_vlan_tci */
69e3c75f JB	81
	82	/* Tx ring - header status */
	83	#define TP_STATUS_AVAILABLE 0x0
	84	#define TP_STATUS_SEND_REQUEST 0x1
	85	#define TP_STATUS_SENDING 0x2
	86	#define TP_STATUS_WRONG_FORMAT 0x4
	87
d94d9fee	88	struct tpacket_hdr {
1da177e4	89	unsigned long tp_status;
1da177e4 LT	90	unsigned int tp_len;
	91	unsigned int tp_snaplen;
	92	unsigned short tp_mac;
	93	unsigned short tp_net;
	94	unsigned int tp_sec;
	95	unsigned int tp_usec;
	96	};
	97
	98	#define TPACKET_ALIGNMENT 16
	99	#define TPACKET_ALIGN(x) (((x)+TPACKET_ALIGNMENT-1)&~(TPACKET_ALIGNMENT-1))
	100	#define TPACKET_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket_hdr)) + sizeof(struct sockaddr_ll))
	101
d94d9fee	102	struct tpacket2_hdr {
bbd6ef87 PM	103	__u32 tp_status;
	104	__u32 tp_len;
	105	__u32 tp_snaplen;
	106	__u16 tp_mac;
	107	__u16 tp_net;
	108	__u32 tp_sec;
	109	__u32 tp_nsec;
393e52e3	110	__u16 tp_vlan_tci;
13fcb7bd	111	__u16 tp_padding;
bbd6ef87 PM	112	};
	113
	114	#define TPACKET2_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket2_hdr)) + sizeof(struct sockaddr_ll))
	115
d94d9fee	116	enum tpacket_versions {
bbd6ef87 PM	117	TPACKET_V1,
	118	TPACKET_V2,
	119	};
	120
1da177e4 LT	121	/*
	122	Frame structure:
	123
	124	- Start. Frame must be aligned to TPACKET_ALIGNMENT=16
	125	- struct tpacket_hdr
	126	- pad to TPACKET_ALIGNMENT=16
	127	- struct sockaddr_ll
	128	- Gap, chosen so that packet data (Start+tp_net) alignes to TPACKET_ALIGNMENT=16
	129	- Start+tp_mac: [ Optional MAC header ]
	130	- Start+tp_net: Packet data, aligned to TPACKET_ALIGNMENT=16.
	131	- Pad to align to TPACKET_ALIGNMENT=16
	132	*/
	133
d94d9fee	134	struct tpacket_req {
1da177e4 LT	135	unsigned int tp_block_size; /* Minimal size of contiguous block */
	136	unsigned int tp_block_nr; /* Number of blocks */
	137	unsigned int tp_frame_size; /* Size of frame */
	138	unsigned int tp_frame_nr; /* Total number of frames */
	139	};
	140
d94d9fee	141	struct packet_mreq {
1da177e4 LT	142	int mr_ifindex;
	143	unsigned short mr_type;
	144	unsigned short mr_alen;
	145	unsigned char mr_address[8];
	146	};
	147
	148	#define PACKET_MR_MULTICAST 0
	149	#define PACKET_MR_PROMISC 1
	150	#define PACKET_MR_ALLMULTI 2
d95ed927	151	#define PACKET_MR_UNICAST 3
1da177e4 LT	152
1da177e4 LT	153	#endif