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[linux-2.6/next.git] / include / linux / if_packet.h
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1 #ifndef __LINUX_IF_PACKET_H
2 #define __LINUX_IF_PACKET_H
4 #include <linux/types.h>
6 struct sockaddr_pkt {
7 unsigned short spkt_family;
8 unsigned char spkt_device[14];
9 __be16 spkt_protocol;
12 struct sockaddr_ll {
13 unsigned short sll_family;
14 __be16 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];
22 /* Packet types */
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 */
33 /* Packet socket options */
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 #define PACKET_AUXDATA 8
43 #define PACKET_ORIGDEV 9
44 #define PACKET_VERSION 10
45 #define PACKET_HDRLEN 11
46 #define PACKET_RESERVE 12
47 #define PACKET_TX_RING 13
48 #define PACKET_LOSS 14
49 #define PACKET_VNET_HDR 15
50 #define PACKET_TX_TIMESTAMP 16
51 #define PACKET_TIMESTAMP 17
53 struct tpacket_stats {
54 unsigned int tp_packets;
55 unsigned int tp_drops;
58 struct tpacket_auxdata {
59 __u32 tp_status;
60 __u32 tp_len;
61 __u32 tp_snaplen;
62 __u16 tp_mac;
63 __u16 tp_net;
64 __u16 tp_vlan_tci;
65 __u16 tp_padding;
68 /* Rx ring - header status */
69 #define TP_STATUS_KERNEL 0x0
70 #define TP_STATUS_USER 0x1
71 #define TP_STATUS_COPY 0x2
72 #define TP_STATUS_LOSING 0x4
73 #define TP_STATUS_CSUMNOTREADY 0x8
74 #define TP_STATUS_VLAN_VALID 0x10 /* auxdata has valid tp_vlan_tci */
76 /* Tx ring - header status */
77 #define TP_STATUS_AVAILABLE 0x0
78 #define TP_STATUS_SEND_REQUEST 0x1
79 #define TP_STATUS_SENDING 0x2
80 #define TP_STATUS_WRONG_FORMAT 0x4
82 struct tpacket_hdr {
83 unsigned long tp_status;
84 unsigned int tp_len;
85 unsigned int tp_snaplen;
86 unsigned short tp_mac;
87 unsigned short tp_net;
88 unsigned int tp_sec;
89 unsigned int tp_usec;
92 #define TPACKET_ALIGNMENT 16
93 #define TPACKET_ALIGN(x) (((x)+TPACKET_ALIGNMENT-1)&~(TPACKET_ALIGNMENT-1))
94 #define TPACKET_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket_hdr)) + sizeof(struct sockaddr_ll))
96 struct tpacket2_hdr {
97 __u32 tp_status;
98 __u32 tp_len;
99 __u32 tp_snaplen;
100 __u16 tp_mac;
101 __u16 tp_net;
102 __u32 tp_sec;
103 __u32 tp_nsec;
104 __u16 tp_vlan_tci;
105 __u16 tp_padding;
108 #define TPACKET2_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket2_hdr)) + sizeof(struct sockaddr_ll))
110 enum tpacket_versions {
111 TPACKET_V1,
112 TPACKET_V2,
116 Frame structure:
118 - Start. Frame must be aligned to TPACKET_ALIGNMENT=16
119 - struct tpacket_hdr
120 - pad to TPACKET_ALIGNMENT=16
121 - struct sockaddr_ll
122 - Gap, chosen so that packet data (Start+tp_net) alignes to TPACKET_ALIGNMENT=16
123 - Start+tp_mac: [ Optional MAC header ]
124 - Start+tp_net: Packet data, aligned to TPACKET_ALIGNMENT=16.
125 - Pad to align to TPACKET_ALIGNMENT=16
128 struct tpacket_req {
129 unsigned int tp_block_size; /* Minimal size of contiguous block */
130 unsigned int tp_block_nr; /* Number of blocks */
131 unsigned int tp_frame_size; /* Size of frame */
132 unsigned int tp_frame_nr; /* Total number of frames */
135 struct packet_mreq {
136 int mr_ifindex;
137 unsigned short mr_type;
138 unsigned short mr_alen;
139 unsigned char mr_address[8];
142 #define PACKET_MR_MULTICAST 0
143 #define PACKET_MR_PROMISC 1
144 #define PACKET_MR_ALLMULTI 2
145 #define PACKET_MR_UNICAST 3
147 #endif