Commit | Line | Data |
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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 | ||
d94d9fee | 6 | struct sockaddr_pkt { |
1da177e4 LT |
7 | unsigned short spkt_family; |
8 | unsigned char spkt_device[14]; | |
0e11c91e | 9 | __be16 spkt_protocol; |
1da177e4 LT |
10 | }; |
11 | ||
d94d9fee | 12 | struct sockaddr_ll { |
1da177e4 | 13 | unsigned short sll_family; |
0e11c91e | 14 | __be16 sll_protocol; |
1da177e4 LT |
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 | |
8dc41944 | 42 | #define PACKET_AUXDATA 8 |
80feaacb | 43 | #define PACKET_ORIGDEV 9 |
bbd6ef87 PM |
44 | #define PACKET_VERSION 10 |
45 | #define PACKET_HDRLEN 11 | |
8913336a | 46 | #define PACKET_RESERVE 12 |
69e3c75f JB |
47 | #define PACKET_TX_RING 13 |
48 | #define PACKET_LOSS 14 | |
1da177e4 | 49 | |
d94d9fee | 50 | struct tpacket_stats { |
1da177e4 LT |
51 | unsigned int tp_packets; |
52 | unsigned int tp_drops; | |
53 | }; | |
54 | ||
d94d9fee | 55 | struct tpacket_auxdata { |
8dc41944 HX |
56 | __u32 tp_status; |
57 | __u32 tp_len; | |
58 | __u32 tp_snaplen; | |
59 | __u16 tp_mac; | |
60 | __u16 tp_net; | |
393e52e3 | 61 | __u16 tp_vlan_tci; |
8dc41944 HX |
62 | }; |
63 | ||
69e3c75f JB |
64 | /* Rx ring - header status */ |
65 | #define TP_STATUS_KERNEL 0x0 | |
66 | #define TP_STATUS_USER 0x1 | |
67 | #define TP_STATUS_COPY 0x2 | |
68 | #define TP_STATUS_LOSING 0x4 | |
69 | #define TP_STATUS_CSUMNOTREADY 0x8 | |
70 | ||
71 | /* Tx ring - header status */ | |
72 | #define TP_STATUS_AVAILABLE 0x0 | |
73 | #define TP_STATUS_SEND_REQUEST 0x1 | |
74 | #define TP_STATUS_SENDING 0x2 | |
75 | #define TP_STATUS_WRONG_FORMAT 0x4 | |
76 | ||
d94d9fee | 77 | struct tpacket_hdr { |
1da177e4 | 78 | unsigned long tp_status; |
1da177e4 LT |
79 | unsigned int tp_len; |
80 | unsigned int tp_snaplen; | |
81 | unsigned short tp_mac; | |
82 | unsigned short tp_net; | |
83 | unsigned int tp_sec; | |
84 | unsigned int tp_usec; | |
85 | }; | |
86 | ||
87 | #define TPACKET_ALIGNMENT 16 | |
88 | #define TPACKET_ALIGN(x) (((x)+TPACKET_ALIGNMENT-1)&~(TPACKET_ALIGNMENT-1)) | |
89 | #define TPACKET_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket_hdr)) + sizeof(struct sockaddr_ll)) | |
90 | ||
d94d9fee | 91 | struct tpacket2_hdr { |
bbd6ef87 PM |
92 | __u32 tp_status; |
93 | __u32 tp_len; | |
94 | __u32 tp_snaplen; | |
95 | __u16 tp_mac; | |
96 | __u16 tp_net; | |
97 | __u32 tp_sec; | |
98 | __u32 tp_nsec; | |
393e52e3 | 99 | __u16 tp_vlan_tci; |
bbd6ef87 PM |
100 | }; |
101 | ||
102 | #define TPACKET2_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket2_hdr)) + sizeof(struct sockaddr_ll)) | |
103 | ||
d94d9fee | 104 | enum tpacket_versions { |
bbd6ef87 PM |
105 | TPACKET_V1, |
106 | TPACKET_V2, | |
107 | }; | |
108 | ||
1da177e4 LT |
109 | /* |
110 | Frame structure: | |
111 | ||
112 | - Start. Frame must be aligned to TPACKET_ALIGNMENT=16 | |
113 | - struct tpacket_hdr | |
114 | - pad to TPACKET_ALIGNMENT=16 | |
115 | - struct sockaddr_ll | |
116 | - Gap, chosen so that packet data (Start+tp_net) alignes to TPACKET_ALIGNMENT=16 | |
117 | - Start+tp_mac: [ Optional MAC header ] | |
118 | - Start+tp_net: Packet data, aligned to TPACKET_ALIGNMENT=16. | |
119 | - Pad to align to TPACKET_ALIGNMENT=16 | |
120 | */ | |
121 | ||
d94d9fee | 122 | struct tpacket_req { |
1da177e4 LT |
123 | unsigned int tp_block_size; /* Minimal size of contiguous block */ |
124 | unsigned int tp_block_nr; /* Number of blocks */ | |
125 | unsigned int tp_frame_size; /* Size of frame */ | |
126 | unsigned int tp_frame_nr; /* Total number of frames */ | |
127 | }; | |
128 | ||
d94d9fee | 129 | struct packet_mreq { |
1da177e4 LT |
130 | int mr_ifindex; |
131 | unsigned short mr_type; | |
132 | unsigned short mr_alen; | |
133 | unsigned char mr_address[8]; | |
134 | }; | |
135 | ||
136 | #define PACKET_MR_MULTICAST 0 | |
137 | #define PACKET_MR_PROMISC 1 | |
138 | #define PACKET_MR_ALLMULTI 2 | |
d95ed927 | 139 | #define PACKET_MR_UNICAST 3 |
1da177e4 LT |
140 | |
141 | #endif |