1#ifndef __LINUX_IF_PACKET_H
2#define __LINUX_IF_PACKET_H
3
4#include <linux/types.h>
5
6struct sockaddr_pkt
7{
8	unsigned short spkt_family;
9	unsigned char spkt_device[14];
10	__be16 spkt_protocol;
11};
12
13struct sockaddr_ll
14{
15	unsigned short	sll_family;
16	__be16		sll_protocol;
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
44#define PACKET_AUXDATA			8
45#define PACKET_ORIGDEV			9
46#define PACKET_VERSION			10
47#define PACKET_HDRLEN			11
48#define PACKET_RESERVE			12
49#define PACKET_TX_RING			13
50#define PACKET_LOSS			14
51
52struct tpacket_stats
53{
54	unsigned int	tp_packets;
55	unsigned int	tp_drops;
56};
57
58struct tpacket_auxdata
59{
60	__u32		tp_status;
61	__u32		tp_len;
62	__u32		tp_snaplen;
63	__u16		tp_mac;
64	__u16		tp_net;
65	__u16		tp_vlan_tci;
66	__u16		tp_padding;
67};
68
69/* Rx ring - header status */
70#define TP_STATUS_KERNEL	0x0
71#define TP_STATUS_USER		0x1
72#define TP_STATUS_COPY		0x2
73#define TP_STATUS_LOSING	0x4
74#define TP_STATUS_CSUMNOTREADY	0x8
75
76/* Tx ring - header status */
77#define TP_STATUS_AVAILABLE	0x0
78#define TP_STATUS_SEND_REQUEST	0x1
79#define TP_STATUS_SENDING	0x2
80#define TP_STATUS_WRONG_FORMAT	0x4
81
82struct tpacket_hdr
83{
84	unsigned long	tp_status;
85	unsigned int	tp_len;
86	unsigned int	tp_snaplen;
87	unsigned short	tp_mac;
88	unsigned short	tp_net;
89	unsigned int	tp_sec;
90	unsigned int	tp_usec;
91};
92
93#define TPACKET_ALIGNMENT	16
94#define TPACKET_ALIGN(x)	(((x)+TPACKET_ALIGNMENT-1)&~(TPACKET_ALIGNMENT-1))
95#define TPACKET_HDRLEN		(TPACKET_ALIGN(sizeof(struct tpacket_hdr)) + sizeof(struct sockaddr_ll))
96
97struct tpacket2_hdr
98{
99	__u32		tp_status;
100	__u32		tp_len;
101	__u32		tp_snaplen;
102	__u16		tp_mac;
103	__u16		tp_net;
104	__u32		tp_sec;
105	__u32		tp_nsec;
106	__u16		tp_vlan_tci;
107	__u16		tp_padding;
108};
109
110#define TPACKET2_HDRLEN		(TPACKET_ALIGN(sizeof(struct tpacket2_hdr)) + sizeof(struct sockaddr_ll))
111
112enum tpacket_versions
113{
114	TPACKET_V1,
115	TPACKET_V2,
116};
117
118/*
119   Frame structure:
120
121   - Start. Frame must be aligned to TPACKET_ALIGNMENT=16
122   - struct tpacket_hdr
123   - pad to TPACKET_ALIGNMENT=16
124   - struct sockaddr_ll
125   - Gap, chosen so that packet data (Start+tp_net) alignes to TPACKET_ALIGNMENT=16
126   - Start+tp_mac: [ Optional MAC header ]
127   - Start+tp_net: Packet data, aligned to TPACKET_ALIGNMENT=16.
128   - Pad to align to TPACKET_ALIGNMENT=16
129 */
130
131struct tpacket_req
132{
133	unsigned int	tp_block_size;	/* Minimal size of contiguous block */
134	unsigned int	tp_block_nr;	/* Number of blocks */
135	unsigned int	tp_frame_size;	/* Size of frame */
136	unsigned int	tp_frame_nr;	/* Total number of frames */
137};
138
139struct packet_mreq
140{
141	int		mr_ifindex;
142	unsigned short	mr_type;
143	unsigned short	mr_alen;
144	unsigned char	mr_address[8];
145};
146
147#define PACKET_MR_MULTICAST	0
148#define PACKET_MR_PROMISC	1
149#define PACKET_MR_ALLMULTI	2
150#define PACKET_MR_UNICAST	3
151
152#endif
153