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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 | |
8dc41944 | 44 | #define PACKET_AUXDATA 8 |
80feaacb | 45 | #define PACKET_ORIGDEV 9 |
bbd6ef87 PM |
46 | #define PACKET_VERSION 10 |
47 | #define PACKET_HDRLEN 11 | |
8913336a | 48 | #define PACKET_RESERVE 12 |
1da177e4 LT |
49 | |
50 | struct tpacket_stats | |
51 | { | |
52 | unsigned int tp_packets; | |
53 | unsigned int tp_drops; | |
54 | }; | |
55 | ||
8dc41944 HX |
56 | struct tpacket_auxdata |
57 | { | |
58 | __u32 tp_status; | |
59 | __u32 tp_len; | |
60 | __u32 tp_snaplen; | |
61 | __u16 tp_mac; | |
62 | __u16 tp_net; | |
393e52e3 | 63 | __u16 tp_vlan_tci; |
8dc41944 HX |
64 | }; |
65 | ||
1da177e4 LT |
66 | struct 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 | ||
bbd6ef87 PM |
86 | struct 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; | |
393e52e3 | 95 | __u16 tp_vlan_tci; |
bbd6ef87 PM |
96 | }; |
97 | ||
98 | #define TPACKET2_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket2_hdr)) + sizeof(struct sockaddr_ll)) | |
99 | ||
100 | enum tpacket_versions | |
101 | { | |
102 | TPACKET_V1, | |
103 | TPACKET_V2, | |
104 | }; | |
105 | ||
1da177e4 LT |
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 | ||
119 | struct 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 | ||
127 | struct 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 |