Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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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
46struct tpacket_stats
47{
48 unsigned int tp_packets;
49 unsigned int tp_drops;
50};
51
52struct tpacket_auxdata
53{
54 __u32 tp_status;
55 __u32 tp_len;
56 __u32 tp_snaplen;
57 __u16 tp_mac;
58 __u16 tp_net;
59};
60
61struct tpacket_hdr
62{
63 unsigned long tp_status;
64#define TP_STATUS_KERNEL 0
65#define TP_STATUS_USER 1
66#define TP_STATUS_COPY 2
67#define TP_STATUS_LOSING 4
68#define TP_STATUS_CSUMNOTREADY 8
69 unsigned int tp_len;
70 unsigned int tp_snaplen;
71 unsigned short tp_mac;
72 unsigned short tp_net;
73 unsigned int tp_sec;
74 unsigned int tp_usec;
75};
76
77#define TPACKET_ALIGNMENT 16
78#define TPACKET_ALIGN(x) (((x)+TPACKET_ALIGNMENT-1)&~(TPACKET_ALIGNMENT-1))
79#define TPACKET_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket_hdr)) + sizeof(struct sockaddr_ll))
80
81/*
82 Frame structure:
83
84 - Start. Frame must be aligned to TPACKET_ALIGNMENT=16
85 - struct tpacket_hdr
86 - pad to TPACKET_ALIGNMENT=16
87 - struct sockaddr_ll
88 - Gap, chosen so that packet data (Start+tp_net) alignes to TPACKET_ALIGNMENT=16
89 - Start+tp_mac: [ Optional MAC header ]
90 - Start+tp_net: Packet data, aligned to TPACKET_ALIGNMENT=16.
91 - Pad to align to TPACKET_ALIGNMENT=16
92 */
93
94struct tpacket_req
95{
96 unsigned int tp_block_size; /* Minimal size of contiguous block */
97 unsigned int tp_block_nr; /* Number of blocks */
98 unsigned int tp_frame_size; /* Size of frame */
99 unsigned int tp_frame_nr; /* Total number of frames */
100};
101
102struct packet_mreq
103{
104 int mr_ifindex;
105 unsigned short mr_type;
106 unsigned short mr_alen;
107 unsigned char mr_address[8];
108};
109
110#define PACKET_MR_MULTICAST 0
111#define PACKET_MR_PROMISC 1
112#define PACKET_MR_ALLMULTI 2
113
114#endif