1#ifndef __LINUX_IF_PACKET_H 2#define __LINUX_IF_PACKET_H 3 4#include <linux/types.h> 5 6struct sockaddr_pkt 7{ 8 unsigned short spkt_family; 9 unsigned char spkt_device[14]; 10 __be16 spkt_protocol; 11}; 12 13struct sockaddr_ll 14{ 15 unsigned short sll_family; 16 __be16 sll_protocol; 17 int sll_ifindex; 18 unsigned short sll_hatype; 19 unsigned char sll_pkttype; 20 unsigned char sll_halen; 21 unsigned char sll_addr[8]; 22}; 23 24/* Packet types */ 25 26#define PACKET_HOST 0 /* To us */ 27#define PACKET_BROADCAST 1 /* To all */ 28#define PACKET_MULTICAST 2 /* To group */ 29#define PACKET_OTHERHOST 3 /* To someone else */ 30#define PACKET_OUTGOING 4 /* Outgoing of any type */ 31/* These ones are invisible by user level */ 32#define PACKET_LOOPBACK 5 /* MC/BRD frame looped back */ 33#define PACKET_FASTROUTE 6 /* Fastrouted frame */ 34 35/* Packet socket options */ 36 37#define PACKET_ADD_MEMBERSHIP 1 38#define PACKET_DROP_MEMBERSHIP 2 39#define PACKET_RECV_OUTPUT 3 40/* Value 4 is still used by obsolete turbo-packet. */ 41#define PACKET_RX_RING 5 42#define PACKET_STATISTICS 6 43#define PACKET_COPY_THRESH 7 44#define PACKET_AUXDATA 8 45#define PACKET_ORIGDEV 9 46#define PACKET_VERSION 10 47#define PACKET_HDRLEN 11 48#define PACKET_RESERVE 12 49#define PACKET_TX_RING 13 50#define PACKET_LOSS 14 51 52struct tpacket_stats 53{ 54 unsigned int tp_packets; 55 unsigned int tp_drops; 56}; 57 58struct tpacket_auxdata 59{ 60 __u32 tp_status; 61 __u32 tp_len; 62 __u32 tp_snaplen; 63 __u16 tp_mac; 64 __u16 tp_net; 65 __u16 tp_vlan_tci; 66}; 67 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 75/* Tx ring - header status */ 76#define TP_STATUS_AVAILABLE 0x0 77#define TP_STATUS_SEND_REQUEST 0x1 78#define TP_STATUS_SENDING 0x2 79#define TP_STATUS_WRONG_FORMAT 0x4 80 81struct tpacket_hdr 82{ 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; 90}; 91 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)) 95 96struct tpacket2_hdr 97{ 98 __u32 tp_status; 99 __u32 tp_len; 100 __u32 tp_snaplen; 101 __u16 tp_mac; 102 __u16 tp_net; 103 __u32 tp_sec; 104 __u32 tp_nsec; 105 __u16 tp_vlan_tci; 106}; 107 108#define TPACKET2_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket2_hdr)) + sizeof(struct sockaddr_ll)) 109 110enum tpacket_versions 111{ 112 TPACKET_V1, 113 TPACKET_V2, 114}; 115 116/* 117 Frame structure: 118 119 - Start. Frame must be aligned to TPACKET_ALIGNMENT=16 120 - struct tpacket_hdr 121 - pad to TPACKET_ALIGNMENT=16 122 - struct sockaddr_ll 123 - Gap, chosen so that packet data (Start+tp_net) alignes to TPACKET_ALIGNMENT=16 124 - Start+tp_mac: [ Optional MAC header ] 125 - Start+tp_net: Packet data, aligned to TPACKET_ALIGNMENT=16. 126 - Pad to align to TPACKET_ALIGNMENT=16 127 */ 128 129struct tpacket_req 130{ 131 unsigned int tp_block_size; /* Minimal size of contiguous block */ 132 unsigned int tp_block_nr; /* Number of blocks */ 133 unsigned int tp_frame_size; /* Size of frame */ 134 unsigned int tp_frame_nr; /* Total number of frames */ 135}; 136 137struct packet_mreq 138{ 139 int mr_ifindex; 140 unsigned short mr_type; 141 unsigned short mr_alen; 142 unsigned char mr_address[8]; 143}; 144 145#define PACKET_MR_MULTICAST 0 146#define PACKET_MR_PROMISC 1 147#define PACKET_MR_ALLMULTI 2 148#define PACKET_MR_UNICAST 3 149 150#endif 151