1 #ifndef __LINUX_IF_PACKET_H
2 #define __LINUX_IF_PACKET_H
3
4 struct sockaddr_pkt
5 {
6 unsigned short spkt_family;
7 unsigned char spkt_device[14];
8 unsigned short spkt_protocol;
9 };
10
11 struct 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
43 struct tpacket_stats
44 {
45 unsigned int tp_packets;
46 unsigned int tp_drops;
47 };
48
49 struct 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 unsigned int tp_len;
57 unsigned int tp_snaplen;
58 unsigned short tp_mac;
59 unsigned short tp_net;
60 unsigned int tp_sec;
61 unsigned int tp_usec;
62 };
63
64 #define TPACKET_ALIGNMENT 16
65 #define TPACKET_ALIGN(x) (((x)+TPACKET_ALIGNMENT-1)&~(TPACKET_ALIGNMENT-1))
66 #define TPACKET_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket_hdr)) + sizeof(struct sockaddr_ll))
67
68 /*
69 Frame structure:
70
71 - Start. Frame must be aligned to TPACKET_ALIGNMENT=16
72 - struct tpacket_hdr
73 - pad to TPACKET_ALIGNMENT=16
74 - struct sockaddr_ll
75 - Gap, chosen so that packet data (Start+tp_net) alignes to TPACKET_ALIGNMENT=16
76 - Start+tp_mac: [ Optional MAC header ]
77 - Start+tp_net: Packet data, aligned to TPACKET_ALIGNMENT=16.
78 - Pad to align to TPACKET_ALIGNMENT=16
79 */
80
81 struct tpacket_req
82 {
83 unsigned int tp_block_size; /* Minimal size of contiguous block */
84 unsigned int tp_block_nr; /* Number of blocks */
85 unsigned int tp_frame_size; /* Size of frame */
86 unsigned int tp_frame_nr; /* Total number of frames */
87 };
88
89 struct packet_mreq
90 {
91 int mr_ifindex;
92 unsigned short mr_type;
93 unsigned short mr_alen;
94 unsigned char mr_address[8];
95 };
96
97 #define PACKET_MR_MULTICAST 0
98 #define PACKET_MR_PROMISC 1
99 #define PACKET_MR_ALLMULTI 2
100
101 #endif
102
This page was automatically generated by the
LXR engine.
Visit the LXR main site for more
information.