0,0 → 1,108 |
/*!\file net/if_packe.h |
* |
* Linux compatability header. |
*/ |
#ifndef __LINUX_IF_PACKET_H |
#define __LINUX_IF_PACKET_H |
|
struct sockaddr_pkt |
{ |
unsigned short spkt_family; |
unsigned char spkt_device[14]; |
unsigned short spkt_protocol; |
}; |
|
struct sockaddr_ll |
{ |
unsigned short sll_family; |
unsigned short 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 |
|
struct tpacket_stats |
{ |
unsigned int tp_packets; |
unsigned int tp_drops; |
}; |
|
struct tpacket_hdr |
{ |
unsigned long tp_status; |
#define TP_STATUS_KERNEL 0 |
#define TP_STATUS_USER 1 |
#define TP_STATUS_COPY 2 |
#define TP_STATUS_LOSING 4 |
#define TP_STATUS_CSUMNOTREADY 8 |
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)) |
|
/* |
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 |
|
#endif |