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1da177e4 LT |
1 | #ifndef __LINUX_IF_PACKET_H |
2 | #define __LINUX_IF_PACKET_H | |
3 | ||
0e11c91e AV |
4 | #include <linux/types.h> |
5 | ||
1da177e4 LT |
6 | struct sockaddr_pkt |
7 | { | |
8 | unsigned short spkt_family; | |
9 | unsigned char spkt_device[14]; | |
0e11c91e | 10 | __be16 spkt_protocol; |
1da177e4 LT |
11 | }; |
12 | ||
13 | struct sockaddr_ll | |
14 | { | |
15 | unsigned short sll_family; | |
0e11c91e | 16 | __be16 sll_protocol; |
1da177e4 LT |
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 | ||
45 | struct tpacket_stats | |
46 | { | |
47 | unsigned int tp_packets; | |
48 | unsigned int tp_drops; | |
49 | }; | |
50 | ||
51 | struct tpacket_hdr | |
52 | { | |
53 | unsigned long tp_status; | |
54 | #define TP_STATUS_KERNEL 0 | |
55 | #define TP_STATUS_USER 1 | |
56 | #define TP_STATUS_COPY 2 | |
57 | #define TP_STATUS_LOSING 4 | |
58 | #define TP_STATUS_CSUMNOTREADY 8 | |
59 | unsigned int tp_len; | |
60 | unsigned int tp_snaplen; | |
61 | unsigned short tp_mac; | |
62 | unsigned short tp_net; | |
63 | unsigned int tp_sec; | |
64 | unsigned int tp_usec; | |
65 | }; | |
66 | ||
67 | #define TPACKET_ALIGNMENT 16 | |
68 | #define TPACKET_ALIGN(x) (((x)+TPACKET_ALIGNMENT-1)&~(TPACKET_ALIGNMENT-1)) | |
69 | #define TPACKET_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket_hdr)) + sizeof(struct sockaddr_ll)) | |
70 | ||
71 | /* | |
72 | Frame structure: | |
73 | ||
74 | - Start. Frame must be aligned to TPACKET_ALIGNMENT=16 | |
75 | - struct tpacket_hdr | |
76 | - pad to TPACKET_ALIGNMENT=16 | |
77 | - struct sockaddr_ll | |
78 | - Gap, chosen so that packet data (Start+tp_net) alignes to TPACKET_ALIGNMENT=16 | |
79 | - Start+tp_mac: [ Optional MAC header ] | |
80 | - Start+tp_net: Packet data, aligned to TPACKET_ALIGNMENT=16. | |
81 | - Pad to align to TPACKET_ALIGNMENT=16 | |
82 | */ | |
83 | ||
84 | struct tpacket_req | |
85 | { | |
86 | unsigned int tp_block_size; /* Minimal size of contiguous block */ | |
87 | unsigned int tp_block_nr; /* Number of blocks */ | |
88 | unsigned int tp_frame_size; /* Size of frame */ | |
89 | unsigned int tp_frame_nr; /* Total number of frames */ | |
90 | }; | |
91 | ||
92 | struct packet_mreq | |
93 | { | |
94 | int mr_ifindex; | |
95 | unsigned short mr_type; | |
96 | unsigned short mr_alen; | |
97 | unsigned char mr_address[8]; | |
98 | }; | |
99 | ||
100 | #define PACKET_MR_MULTICAST 0 | |
101 | #define PACKET_MR_PROMISC 1 | |
102 | #define PACKET_MR_ALLMULTI 2 | |
103 | ||
104 | #endif |