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#ifndef __LINUX_IF_PACKET_H
#define __LINUX_IF_PACKET_H
#include
struct sockaddr_pkt
{
unsigned short spkt_family;
unsigned char spkt_device[14];
__be16 spkt_protocol;
};
struct sockaddr_ll
{
unsigned short sll_family;
__be16 sll_protocol;
int sll_ifindex;
unsigned short sll_hatype;
unsigned char sll_pkttype;
unsigned char sll_halen;
unsigned char sll_addr[8];
};
/* Packet types */
#define PACKET_HOST 0 /* To us */
#define PACKET_BROADCAST 1 /* To all */
#define PACKET_MULTICAST 2 /* To group */
#define PACKET_OTHERHOST 3 /* To someone else */
#define PACKET_OUTGOING 4 /* Outgoing of any type */
/* These ones are invisible by user level */
#define PACKET_LOOPBACK 5 /* MC/BRD frame looped back */
#define PACKET_FASTROUTE 6 /* Fastrouted frame */
/* Packet socket options */
#define PACKET_ADD_MEMBERSHIP 1
#define PACKET_DROP_MEMBERSHIP 2
#define PACKET_RECV_OUTPUT 3
/* Value 4 is still used by obsolete turbo-packet. */
#define PACKET_RX_RING 5
#define PACKET_STATISTICS 6
#define PACKET_COPY_THRESH 7
#define PACKET_AUXDATA 8
#define PACKET_ORIGDEV 9
#define PACKET_VERSION 10
#define PACKET_HDRLEN 11
#define PACKET_RESERVE 12
#define PACKET_TX_RING 13
#define PACKET_LOSS 14
#define PACKET_TX_TIMESTAMP 16
#define PACKET_TIMESTAMP 17
struct tpacket_stats
{
unsigned int tp_packets;
unsigned int tp_drops;
};
struct tpacket_auxdata
{
__u32 tp_status;
__u32 tp_len;
__u32 tp_snaplen;
__u16 tp_mac;
__u16 tp_net;
__u16 tp_vlan_tci;
__u16 tp_padding;
};
/* Rx ring - header status */
#define TP_STATUS_KERNEL 0x0
#define TP_STATUS_USER 0x1
#define TP_STATUS_COPY 0x2
#define TP_STATUS_LOSING 0x4
#define TP_STATUS_CSUMNOTREADY 0x8
/* Tx ring - header status */
#define TP_STATUS_AVAILABLE 0x0
#define TP_STATUS_SEND_REQUEST 0x1
#define TP_STATUS_SENDING 0x2
#define TP_STATUS_WRONG_FORMAT 0x4
struct tpacket_hdr
{
unsigned long tp_status;
unsigned int tp_len;
unsigned int tp_snaplen;
unsigned short tp_mac;
unsigned short tp_net;
unsigned int tp_sec;
unsigned int tp_usec;
};
#define TPACKET_ALIGNMENT 16
#define TPACKET_ALIGN(x) (((x)+TPACKET_ALIGNMENT-1)&~(TPACKET_ALIGNMENT-1))
#define TPACKET_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket_hdr)) + sizeof(struct sockaddr_ll))
struct tpacket2_hdr
{
__u32 tp_status;
__u32 tp_len;
__u32 tp_snaplen;
__u16 tp_mac;
__u16 tp_net;
__u32 tp_sec;
__u32 tp_nsec;
__u16 tp_vlan_tci;
__u16 tp_padding;
};
#define TPACKET2_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket2_hdr)) + sizeof(struct sockaddr_ll))
enum tpacket_versions
{
TPACKET_V1,
TPACKET_V2,
};
/*
Frame structure:
- Start. Frame must be aligned to TPACKET_ALIGNMENT=16
- struct tpacket_hdr
- pad to TPACKET_ALIGNMENT=16
- struct sockaddr_ll
- Gap, chosen so that packet data (Start+tp_net) alignes to TPACKET_ALIGNMENT=16
- Start+tp_mac: [ Optional MAC header ]
- Start+tp_net: Packet data, aligned to TPACKET_ALIGNMENT=16.
- Pad to align to TPACKET_ALIGNMENT=16
*/
struct tpacket_req
{
unsigned int tp_block_size; /* Minimal size of contiguous block */
unsigned int tp_block_nr; /* Number of blocks */
unsigned int tp_frame_size; /* Size of frame */
unsigned int tp_frame_nr; /* Total number of frames */
};
struct packet_mreq
{
int mr_ifindex;
unsigned short mr_type;
unsigned short mr_alen;
unsigned char mr_address[8];
};
#define PACKET_MR_MULTICAST 0
#define PACKET_MR_PROMISC 1
#define PACKET_MR_ALLMULTI 2
#define PACKET_MR_UNICAST 3
#endif