Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
1#ifndef __LINUX_IF_PACKET_H
2#define __LINUX_IF_PACKET_H
3
4struct sockaddr_pkt
5{
6 unsigned short spkt_family;
7 unsigned char spkt_device[14];
8 unsigned short spkt_protocol;
9};
10
11struct sockaddr_ll
12{
13 unsigned short sll_family;
14 unsigned short sll_protocol;
15 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
42
43struct tpacket_stats
44{
45 unsigned int tp_packets;
46 unsigned int tp_drops;
47};
48
49struct tpacket_hdr
50{
51 unsigned long tp_status;
52#define TP_STATUS_KERNEL 0
53#define TP_STATUS_USER 1
54#define TP_STATUS_COPY 2
55#define TP_STATUS_LOSING 4
56#define TP_STATUS_CSUMNOTREADY 8
57 unsigned int tp_len;
58 unsigned int tp_snaplen;
59 unsigned short tp_mac;
60 unsigned short tp_net;
61 unsigned int tp_sec;
62 unsigned int tp_usec;
63};
64
65#define TPACKET_ALIGNMENT 16
66#define TPACKET_ALIGN(x) (((x)+TPACKET_ALIGNMENT-1)&~(TPACKET_ALIGNMENT-1))
67#define TPACKET_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket_hdr)) + sizeof(struct sockaddr_ll))
68
69/*
70 Frame structure:
71
72 - Start. Frame must be aligned to TPACKET_ALIGNMENT=16
73 - struct tpacket_hdr
74 - pad to TPACKET_ALIGNMENT=16
75 - struct sockaddr_ll
76 - Gap, chosen so that packet data (Start+tp_net) alignes to TPACKET_ALIGNMENT=16
77 - Start+tp_mac: [ Optional MAC header ]
78 - Start+tp_net: Packet data, aligned to TPACKET_ALIGNMENT=16.
79 - Pad to align to TPACKET_ALIGNMENT=16
80 */
81
82struct tpacket_req
83{
84 unsigned int tp_block_size; /* Minimal size of contiguous block */
85 unsigned int tp_block_nr; /* Number of blocks */
86 unsigned int tp_frame_size; /* Size of frame */
87 unsigned int tp_frame_nr; /* Total number of frames */
88};
89
90struct packet_mreq
91{
92 int mr_ifindex;
93 unsigned short mr_type;
94 unsigned short mr_alen;
95 unsigned char mr_address[8];
96};
97
98#define PACKET_MR_MULTICAST 0
99#define PACKET_MR_PROMISC 1
100#define PACKET_MR_ALLMULTI 2
101
102#endif