1 #ifndef __LINUX_IF_PACKET_H 2 #define __LINUX_IF_PACKET_H 3 4 struct sockaddr_pkt 5 { 6 unsigned short spkt_family; 7 unsigned char spkt_device[14]; 8 unsigned short spkt_protocol; 9 }; 10 11 struct sockaddr_ll 12 { 13 unsigned short sll_family; 14 unsigned short 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 43 struct tpacket_stats 44 { 45 unsigned int tp_packets; 46 unsigned int tp_drops; 47 }; 48 49 struct tpacket_hdr 50 { 51 unsigned long tp_status; 52 #define TP_STATUS_KERNEL 0 53 #define TP_STATUS_USER 1 54 #define TP_STATUS_COPY 2 55 #define TP_STATUS_LOSING 4 56 #define TP_STATUS_CSUMNOTREADY 8 57 unsigned int tp_len; 58 unsigned int tp_snaplen; 59 unsigned short tp_mac; 60 unsigned short tp_net; 61 unsigned int tp_sec; 62 unsigned int tp_usec; 63 }; 64 65 #define TPACKET_ALIGNMENT 16 66 #define TPACKET_ALIGN(x) (((x)+TPACKET_ALIGNMENT-1)&~(TPACKET_ALIGNMENT-1)) 67 #define TPACKET_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket_hdr)) + sizeof(struct sockaddr_ll)) 68 69 /* 70 Frame structure: 71 72 - Start. Frame must be aligned to TPACKET_ALIGNMENT=16 73 - struct tpacket_hdr 74 - pad to TPACKET_ALIGNMENT=16 75 - struct sockaddr_ll 76 - Gap, chosen so that packet data (Start+tp_net) alignes to TPACKET_ALIGNMENT=16 77 - Start+tp_mac: [ Optional MAC header ] 78 - Start+tp_net: Packet data, aligned to TPACKET_ALIGNMENT=16. 79 - Pad to align to TPACKET_ALIGNMENT=16 80 */ 81 82 struct tpacket_req 83 { 84 unsigned int tp_block_size; /* Minimal size of contiguous block */ 85 unsigned int tp_block_nr; /* Number of blocks */ 86 unsigned int tp_frame_size; /* Size of frame */ 87 unsigned int tp_frame_nr; /* Total number of frames */ 88 }; 89 90 struct packet_mreq 91 { 92 int mr_ifindex; 93 unsigned short mr_type; 94 unsigned short mr_alen; 95 unsigned char mr_address[8]; 96 }; 97 98 #define PACKET_MR_MULTICAST 0 99 #define PACKET_MR_PROMISC 1 100 #define PACKET_MR_ALLMULTI 2 101 102 #endif 103
