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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
Eric Dumazetd94d9fe2009-11-04 09:50:58 -08006struct sockaddr_pkt {
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 unsigned short spkt_family;
8 unsigned char spkt_device[14];
Al Viro0e11c912006-11-08 00:26:29 -08009 __be16 spkt_protocol;
Linus Torvalds1da177e2005-04-16 15:20:36 -070010};
11
Eric Dumazetd94d9fe2009-11-04 09:50:58 -080012struct sockaddr_ll {
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 unsigned short sll_family;
Al Viro0e11c912006-11-08 00:26:29 -080014 __be16 sll_protocol;
Linus Torvalds1da177e2005-04-16 15:20:36 -070015 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
Herbert Xu8dc41942007-02-04 23:31:32 -080042#define PACKET_AUXDATA 8
Peter P. Waskiewicz Jr80feaac2007-04-20 16:05:39 -070043#define PACKET_ORIGDEV 9
Patrick McHardybbd6ef82008-07-14 22:50:15 -070044#define PACKET_VERSION 10
45#define PACKET_HDRLEN 11
Patrick McHardy8913336a2008-07-18 18:05:19 -070046#define PACKET_RESERVE 12
Johann Baudy69e3c752009-05-18 22:11:22 -070047#define PACKET_TX_RING 13
48#define PACKET_LOSS 14
Sridhar Samudralabfd5f4a2010-02-04 20:24:10 -080049#define PACKET_VNET_HDR 15
Richard Cochraned85b562010-04-07 22:41:28 +000050#define PACKET_TX_TIMESTAMP 16
Scott McMillan614f60f2010-06-02 05:53:56 -070051#define PACKET_TIMESTAMP 17
Linus Torvalds1da177e2005-04-16 15:20:36 -070052
Eric Dumazetd94d9fe2009-11-04 09:50:58 -080053struct tpacket_stats {
Linus Torvalds1da177e2005-04-16 15:20:36 -070054 unsigned int tp_packets;
55 unsigned int tp_drops;
56};
57
Eric Dumazetd94d9fe2009-11-04 09:50:58 -080058struct tpacket_auxdata {
Herbert Xu8dc41942007-02-04 23:31:32 -080059 __u32 tp_status;
60 __u32 tp_len;
61 __u32 tp_snaplen;
62 __u16 tp_mac;
63 __u16 tp_net;
Patrick McHardy393e52e2008-07-14 22:50:39 -070064 __u16 tp_vlan_tci;
Herbert Xu8dc41942007-02-04 23:31:32 -080065};
66
Johann Baudy69e3c752009-05-18 22:11:22 -070067/* Rx ring - header status */
68#define TP_STATUS_KERNEL 0x0
69#define TP_STATUS_USER 0x1
70#define TP_STATUS_COPY 0x2
71#define TP_STATUS_LOSING 0x4
72#define TP_STATUS_CSUMNOTREADY 0x8
73
74/* Tx ring - header status */
75#define TP_STATUS_AVAILABLE 0x0
76#define TP_STATUS_SEND_REQUEST 0x1
77#define TP_STATUS_SENDING 0x2
78#define TP_STATUS_WRONG_FORMAT 0x4
79
Eric Dumazetd94d9fe2009-11-04 09:50:58 -080080struct tpacket_hdr {
Linus Torvalds1da177e2005-04-16 15:20:36 -070081 unsigned long tp_status;
Linus Torvalds1da177e2005-04-16 15:20:36 -070082 unsigned int tp_len;
83 unsigned int tp_snaplen;
84 unsigned short tp_mac;
85 unsigned short tp_net;
86 unsigned int tp_sec;
87 unsigned int tp_usec;
88};
89
90#define TPACKET_ALIGNMENT 16
91#define TPACKET_ALIGN(x) (((x)+TPACKET_ALIGNMENT-1)&~(TPACKET_ALIGNMENT-1))
92#define TPACKET_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket_hdr)) + sizeof(struct sockaddr_ll))
93
Eric Dumazetd94d9fe2009-11-04 09:50:58 -080094struct tpacket2_hdr {
Patrick McHardybbd6ef82008-07-14 22:50:15 -070095 __u32 tp_status;
96 __u32 tp_len;
97 __u32 tp_snaplen;
98 __u16 tp_mac;
99 __u16 tp_net;
100 __u32 tp_sec;
101 __u32 tp_nsec;
Patrick McHardy393e52e2008-07-14 22:50:39 -0700102 __u16 tp_vlan_tci;
Patrick McHardybbd6ef82008-07-14 22:50:15 -0700103};
104
105#define TPACKET2_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket2_hdr)) + sizeof(struct sockaddr_ll))
106
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800107enum tpacket_versions {
Patrick McHardybbd6ef82008-07-14 22:50:15 -0700108 TPACKET_V1,
109 TPACKET_V2,
110};
111
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112/*
113 Frame structure:
114
115 - Start. Frame must be aligned to TPACKET_ALIGNMENT=16
116 - struct tpacket_hdr
117 - pad to TPACKET_ALIGNMENT=16
118 - struct sockaddr_ll
119 - Gap, chosen so that packet data (Start+tp_net) alignes to TPACKET_ALIGNMENT=16
120 - Start+tp_mac: [ Optional MAC header ]
121 - Start+tp_net: Packet data, aligned to TPACKET_ALIGNMENT=16.
122 - Pad to align to TPACKET_ALIGNMENT=16
123 */
124
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800125struct tpacket_req {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126 unsigned int tp_block_size; /* Minimal size of contiguous block */
127 unsigned int tp_block_nr; /* Number of blocks */
128 unsigned int tp_frame_size; /* Size of frame */
129 unsigned int tp_frame_nr; /* Total number of frames */
130};
131
Eric Dumazetd94d9fe2009-11-04 09:50:58 -0800132struct packet_mreq {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133 int mr_ifindex;
134 unsigned short mr_type;
135 unsigned short mr_alen;
136 unsigned char mr_address[8];
137};
138
139#define PACKET_MR_MULTICAST 0
140#define PACKET_MR_PROMISC 1
141#define PACKET_MR_ALLMULTI 2
Eric W. Biedermand95ed922009-05-19 18:27:17 +0000142#define PACKET_MR_UNICAST 3
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143
144#endif