1#ifndef __LINUX_IF_PACKET_H 2#define __LINUX_IF_PACKET_H 3 4#include <linux/types.h> 5 6struct sockaddr_pkt { 7 unsigned short spkt_family; 8 unsigned char spkt_device[14]; 9 __be16 spkt_protocol; 10}; 11 12struct 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]; 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 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 52 53struct tpacket_stats { 54 unsigned int tp_packets; 55 unsigned int tp_drops; 56}; 57 58struct 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}; 66 67/* Rx ring - header status */ 68#define TP_STATUS_KERNEL 0x0 69#define TP_STATUS_USER 0x1 70#define TP_STATUS_COPY 0x2 71#define TP_STATUS_LOSING 0x4 72#define TP_STATUS_CSUMNOTREADY 0x8 73 74/* Tx ring - header status */ 75#define TP_STATUS_AVAILABLE 0x0 76#define TP_STATUS_SEND_REQUEST 0x1 77#define TP_STATUS_SENDING 0x2 78#define TP_STATUS_WRONG_FORMAT 0x4 79 80struct tpacket_hdr { 81 unsigned long tp_status; 82 unsigned int tp_len; 83 unsigned int tp_snaplen; 84 unsigned short tp_mac; 85 unsigned short tp_net; 86 unsigned int tp_sec; 87 unsigned int tp_usec; 88}; 89 90#define TPACKET_ALIGNMENT 16 91#define TPACKET_ALIGN(x) (((x)+TPACKET_ALIGNMENT-1)&~(TPACKET_ALIGNMENT-1)) 92#define TPACKET_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket_hdr)) + sizeof(struct sockaddr_ll)) 93 94struct tpacket2_hdr { 95 __u32 tp_status; 96 __u32 tp_len; 97 __u32 tp_snaplen; 98 __u16 tp_mac; 99 __u16 tp_net; 100 __u32 tp_sec; 101 __u32 tp_nsec; 102 __u16 tp_vlan_tci; 103}; 104 105#define TPACKET2_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket2_hdr)) + sizeof(struct sockaddr_ll)) 106 107enum tpacket_versions { 108 TPACKET_V1, 109 TPACKET_V2, 110}; 111 112/* 113 Frame structure: 114 115 - Start. Frame must be aligned to TPACKET_ALIGNMENT=16 116 - struct tpacket_hdr 117 - pad to TPACKET_ALIGNMENT=16 118 - struct sockaddr_ll 119 - Gap, chosen so that packet data (Start+tp_net) alignes to TPACKET_ALIGNMENT=16 120 - Start+tp_mac: [ Optional MAC header ] 121 - Start+tp_net: Packet data, aligned to TPACKET_ALIGNMENT=16. 122 - Pad to align to TPACKET_ALIGNMENT=16 123 */ 124 125struct tpacket_req { 126 unsigned int tp_block_size; /* Minimal size of contiguous block */ 127 unsigned int tp_block_nr; /* Number of blocks */ 128 unsigned int tp_frame_size; /* Size of frame */ 129 unsigned int tp_frame_nr; /* Total number of frames */ 130}; 131 132struct packet_mreq { 133 int mr_ifindex; 134 unsigned short mr_type; 135 unsigned short mr_alen; 136 unsigned char mr_address[8]; 137}; 138 139#define PACKET_MR_MULTICAST 0 140#define PACKET_MR_PROMISC 1 141#define PACKET_MR_ALLMULTI 2 142#define PACKET_MR_UNICAST 3 143 144#endif 145