Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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};
67
68/* Rx ring - header status */
69#define TP_STATUS_KERNEL 0x0
70#define TP_STATUS_USER 0x1
71#define TP_STATUS_COPY 0x2
72#define TP_STATUS_LOSING 0x4
73#define TP_STATUS_CSUMNOTREADY 0x8
74
75/* Tx ring - header status */
76#define TP_STATUS_AVAILABLE 0x0
77#define TP_STATUS_SEND_REQUEST 0x1
78#define TP_STATUS_SENDING 0x2
79#define TP_STATUS_WRONG_FORMAT 0x4
80
81struct tpacket_hdr
82{
83 unsigned long tp_status;
84 unsigned int tp_len;
85 unsigned int tp_snaplen;
86 unsigned short tp_mac;
87 unsigned short tp_net;
88 unsigned int tp_sec;
89 unsigned int tp_usec;
90};
91
92#define TPACKET_ALIGNMENT 16
93#define TPACKET_ALIGN(x) (((x)+TPACKET_ALIGNMENT-1)&~(TPACKET_ALIGNMENT-1))
94#define TPACKET_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket_hdr)) + sizeof(struct sockaddr_ll))
95
96struct tpacket2_hdr
97{
98 __u32 tp_status;
99 __u32 tp_len;
100 __u32 tp_snaplen;
101 __u16 tp_mac;
102 __u16 tp_net;
103 __u32 tp_sec;
104 __u32 tp_nsec;
105 __u16 tp_vlan_tci;
106};
107
108#define TPACKET2_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket2_hdr)) + sizeof(struct sockaddr_ll))
109
110enum tpacket_versions
111{
112 TPACKET_V1,
113 TPACKET_V2,
114};
115
116/*
117 Frame structure:
118
119 - Start. Frame must be aligned to TPACKET_ALIGNMENT=16
120 - struct tpacket_hdr
121 - pad to TPACKET_ALIGNMENT=16
122 - struct sockaddr_ll
123 - Gap, chosen so that packet data (Start+tp_net) alignes to TPACKET_ALIGNMENT=16
124 - Start+tp_mac: [ Optional MAC header ]
125 - Start+tp_net: Packet data, aligned to TPACKET_ALIGNMENT=16.
126 - Pad to align to TPACKET_ALIGNMENT=16
127 */
128
129struct tpacket_req
130{
131 unsigned int tp_block_size; /* Minimal size of contiguous block */
132 unsigned int tp_block_nr; /* Number of blocks */
133 unsigned int tp_frame_size; /* Size of frame */
134 unsigned int tp_frame_nr; /* Total number of frames */
135};
136
137struct packet_mreq
138{
139 int mr_ifindex;
140 unsigned short mr_type;
141 unsigned short mr_alen;
142 unsigned char mr_address[8];
143};
144
145#define PACKET_MR_MULTICAST 0
146#define PACKET_MR_PROMISC 1
147#define PACKET_MR_ALLMULTI 2
148#define PACKET_MR_UNICAST 3
149
150#endif