| #ifndef __LINUX_IF_PACKET_H |
| #define __LINUX_IF_PACKET_H |
| |
| #include <linux/types.h> |
| |
| 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 |
| |
| 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 |