1 #ifndef __LINUX_IF_PACKET_H 2 #define __LINUX_IF_PACKET_H 3 4 #include <linux/types.h> 5 6 struct sockaddr_pkt 7 { 8 unsigned short spkt_family; 9 unsigned char spkt_device[14]; 10 __be16 spkt_protocol; 11 }; 12 13 struct 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 47 struct tpacket_stats 48 { 49 unsigned int tp_packets; 50 unsigned int tp_drops; 51 }; 52 53 struct tpacket_auxdata 54 { 55 __u32 tp_status; 56 __u32 tp_len; 57 __u32 tp_snaplen; 58 __u16 tp_mac; 59 __u16 tp_net; 60 }; 61 62 struct tpacket_hdr 63 { 64 unsigned long tp_status; 65 #define TP_STATUS_KERNEL 0 66 #define TP_STATUS_USER 1 67 #define TP_STATUS_COPY 2 68 #define TP_STATUS_LOSING 4 69 #define TP_STATUS_CSUMNOTREADY 8 70 unsigned int tp_len; 71 unsigned int tp_snaplen; 72 unsigned short tp_mac; 73 unsigned short tp_net; 74 unsigned int tp_sec; 75 unsigned int tp_usec; 76 }; 77 78 #define TPACKET_ALIGNMENT 16 79 #define TPACKET_ALIGN(x) (((x)+TPACKET_ALIGNMENT-1)&~(TPACKET_ALIGNMENT-1)) 80 #define TPACKET_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket_hdr)) + sizeof(struct sockaddr_ll)) 81 82 /* 83 Frame structure: 84 85 - Start. Frame must be aligned to TPACKET_ALIGNMENT=16 86 - struct tpacket_hdr 87 - pad to TPACKET_ALIGNMENT=16 88 - struct sockaddr_ll 89 - Gap, chosen so that packet data (Start+tp_net) alignes to TPACKET_ALIGNMENT=16 90 - Start+tp_mac: [ Optional MAC header ] 91 - Start+tp_net: Packet data, aligned to TPACKET_ALIGNMENT=16. 92 - Pad to align to TPACKET_ALIGNMENT=16 93 */ 94 95 struct tpacket_req 96 { 97 unsigned int tp_block_size; /* Minimal size of contiguous block */ 98 unsigned int tp_block_nr; /* Number of blocks */ 99 unsigned int tp_frame_size; /* Size of frame */ 100 unsigned int tp_frame_nr; /* Total number of frames */ 101 }; 102 103 struct packet_mreq 104 { 105 int mr_ifindex; 106 unsigned short mr_type; 107 unsigned short mr_alen; 108 unsigned char mr_address[8]; 109 }; 110 111 #define PACKET_MR_MULTICAST 0 112 #define PACKET_MR_PROMISC 1 113 #define PACKET_MR_ALLMULTI 2 114 115 #endif 116