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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef __LINUX_IF_PACKET_H
2#define __LINUX_IF_PACKET_H
3
Al Viro0e11c912006-11-08 00:26:29 -08004#include <linux/types.h>
5
Linus Torvalds1da177e2005-04-16 15:20:36 -07006struct sockaddr_pkt
7{
8 unsigned short spkt_family;
9 unsigned char spkt_device[14];
Al Viro0e11c912006-11-08 00:26:29 -080010 __be16 spkt_protocol;
Linus Torvalds1da177e2005-04-16 15:20:36 -070011};
12
13struct sockaddr_ll
14{
15 unsigned short sll_family;
Al Viro0e11c912006-11-08 00:26:29 -080016 __be16 sll_protocol;
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 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
Herbert Xu8dc41942007-02-04 23:31:32 -080044#define PACKET_AUXDATA 8
Peter P. Waskiewicz Jr80feaac2007-04-20 16:05:39 -070045#define PACKET_ORIGDEV 9
Linus Torvalds1da177e2005-04-16 15:20:36 -070046
47struct tpacket_stats
48{
49 unsigned int tp_packets;
50 unsigned int tp_drops;
51};
52
Herbert Xu8dc41942007-02-04 23:31:32 -080053struct tpacket_auxdata
54{
55 __u32 tp_status;
56 __u32 tp_len;
57 __u32 tp_snaplen;
58 __u16 tp_mac;
59 __u16 tp_net;
60};
61
Linus Torvalds1da177e2005-04-16 15:20:36 -070062struct tpacket_hdr
63{
64 unsigned long tp_status;
65#define TP_STATUS_KERNEL 0
66#define TP_STATUS_USER 1
67#define TP_STATUS_COPY 2
68#define TP_STATUS_LOSING 4
69#define TP_STATUS_CSUMNOTREADY 8
70 unsigned int tp_len;
71 unsigned int tp_snaplen;
72 unsigned short tp_mac;
73 unsigned short tp_net;
74 unsigned int tp_sec;
75 unsigned int tp_usec;
76};
77
78#define TPACKET_ALIGNMENT 16
79#define TPACKET_ALIGN(x) (((x)+TPACKET_ALIGNMENT-1)&~(TPACKET_ALIGNMENT-1))
80#define TPACKET_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket_hdr)) + sizeof(struct sockaddr_ll))
81
82/*
83 Frame structure:
84
85 - Start. Frame must be aligned to TPACKET_ALIGNMENT=16
86 - struct tpacket_hdr
87 - pad to TPACKET_ALIGNMENT=16
88 - struct sockaddr_ll
89 - Gap, chosen so that packet data (Start+tp_net) alignes to TPACKET_ALIGNMENT=16
90 - Start+tp_mac: [ Optional MAC header ]
91 - Start+tp_net: Packet data, aligned to TPACKET_ALIGNMENT=16.
92 - Pad to align to TPACKET_ALIGNMENT=16
93 */
94
95struct tpacket_req
96{
97 unsigned int tp_block_size; /* Minimal size of contiguous block */
98 unsigned int tp_block_nr; /* Number of blocks */
99 unsigned int tp_frame_size; /* Size of frame */
100 unsigned int tp_frame_nr; /* Total number of frames */
101};
102
103struct packet_mreq
104{
105 int mr_ifindex;
106 unsigned short mr_type;
107 unsigned short mr_alen;
108 unsigned char mr_address[8];
109};
110
111#define PACKET_MR_MULTICAST 0
112#define PACKET_MR_PROMISC 1
113#define PACKET_MR_ALLMULTI 2
114
115#endif