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
50struct tpacket_stats
51{
52 unsigned int tp_packets;
53 unsigned int tp_drops;
54};
55
56struct tpacket_auxdata
57{
58 __u32 tp_status;
59 __u32 tp_len;
60 __u32 tp_snaplen;
61 __u16 tp_mac;
62 __u16 tp_net;
63 __u16 tp_vlan_tci;
64};
65
66struct tpacket_hdr
67{
68 unsigned long tp_status;
69#define TP_STATUS_KERNEL 0
70#define TP_STATUS_USER 1
71#define TP_STATUS_COPY 2
72#define TP_STATUS_LOSING 4
73#define TP_STATUS_CSUMNOTREADY 8
74 unsigned int tp_len;
75 unsigned int tp_snaplen;
76 unsigned short tp_mac;
77 unsigned short tp_net;
78 unsigned int tp_sec;
79 unsigned int tp_usec;
80};
81
82#define TPACKET_ALIGNMENT 16
83#define TPACKET_ALIGN(x) (((x)+TPACKET_ALIGNMENT-1)&~(TPACKET_ALIGNMENT-1))
84#define TPACKET_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket_hdr)) + sizeof(struct sockaddr_ll))
85
86struct tpacket2_hdr
87{
88 __u32 tp_status;
89 __u32 tp_len;
90 __u32 tp_snaplen;
91 __u16 tp_mac;
92 __u16 tp_net;
93 __u32 tp_sec;
94 __u32 tp_nsec;
95 __u16 tp_vlan_tci;
96};
97
98#define TPACKET2_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket2_hdr)) + sizeof(struct sockaddr_ll))
99
100enum tpacket_versions
101{
102 TPACKET_V1,
103 TPACKET_V2,
104};
105
106/*
107 Frame structure:
108
109 - Start. Frame must be aligned to TPACKET_ALIGNMENT=16
110 - struct tpacket_hdr
111 - pad to TPACKET_ALIGNMENT=16
112 - struct sockaddr_ll
113 - Gap, chosen so that packet data (Start+tp_net) alignes to TPACKET_ALIGNMENT=16
114 - Start+tp_mac: [ Optional MAC header ]
115 - Start+tp_net: Packet data, aligned to TPACKET_ALIGNMENT=16.
116 - Pad to align to TPACKET_ALIGNMENT=16
117 */
118
119struct tpacket_req
120{
121 unsigned int tp_block_size; /* Minimal size of contiguous block */
122 unsigned int tp_block_nr; /* Number of blocks */
123 unsigned int tp_frame_size; /* Size of frame */
124 unsigned int tp_frame_nr; /* Total number of frames */
125};
126
127struct packet_mreq
128{
129 int mr_ifindex;
130 unsigned short mr_type;
131 unsigned short mr_alen;
132 unsigned char mr_address[8];
133};
134
135#define PACKET_MR_MULTICAST 0
136#define PACKET_MR_PROMISC 1
137#define PACKET_MR_ALLMULTI 2
138
139#endif