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 #define PACKET_VERSION 10 47 #define PACKET_HDRLEN 11 48 #define PACKET_RESERVE 12 49 50 struct tpacket_stats 51 { 52 unsigned int tp_packets; 53 unsigned int tp_drops; 54 }; 55 56 struct tpacket_auxdata 57 { 58 __u32 tp_status; 59 __u32 tp_len; 60 __u32 tp_snaplen; 61 __u16 tp_mac; 62 __u16 tp_net; 63 __u16 tp_vlan_tci; 64 }; 65 66 struct tpacket_hdr 67 { 68 unsigned long tp_status; 69 #define TP_STATUS_KERNEL 0 70 #define TP_STATUS_USER 1 71 #define TP_STATUS_COPY 2 72 #define TP_STATUS_LOSING 4 73 #define TP_STATUS_CSUMNOTREADY 8 74 unsigned int tp_len; 75 unsigned int tp_snaplen; 76 unsigned short tp_mac; 77 unsigned short tp_net; 78 unsigned int tp_sec; 79 unsigned int tp_usec; 80 }; 81 82 #define TPACKET_ALIGNMENT 16 83 #define TPACKET_ALIGN(x) (((x)+TPACKET_ALIGNMENT-1)&~(TPACKET_ALIGNMENT-1)) 84 #define TPACKET_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket_hdr)) + sizeof(struct sockaddr_ll)) 85 86 struct tpacket2_hdr 87 { 88 __u32 tp_status; 89 __u32 tp_len; 90 __u32 tp_snaplen; 91 __u16 tp_mac; 92 __u16 tp_net; 93 __u32 tp_sec; 94 __u32 tp_nsec; 95 __u16 tp_vlan_tci; 96 }; 97 98 #define TPACKET2_HDRLEN (TPACKET_ALIGN(sizeof(struct tpacket2_hdr)) + sizeof(struct sockaddr_ll)) 99 100 enum tpacket_versions 101 { 102 TPACKET_V1, 103 TPACKET_V2, 104 }; 105 106 /* 107 Frame structure: 108 109 - Start. Frame must be aligned to TPACKET_ALIGNMENT=16 110 - struct tpacket_hdr 111 - pad to TPACKET_ALIGNMENT=16 112 - struct sockaddr_ll 113 - Gap, chosen so that packet data (Start+tp_net) alignes to TPACKET_ALIGNMENT=16 114 - Start+tp_mac: [ Optional MAC header ] 115 - Start+tp_net: Packet data, aligned to TPACKET_ALIGNMENT=16. 116 - Pad to align to TPACKET_ALIGNMENT=16 117 */ 118 119 struct tpacket_req 120 { 121 unsigned int tp_block_size; /* Minimal size of contiguous block */ 122 unsigned int tp_block_nr; /* Number of blocks */ 123 unsigned int tp_frame_size; /* Size of frame */ 124 unsigned int tp_frame_nr; /* Total number of frames */ 125 }; 126 127 struct packet_mreq 128 { 129 int mr_ifindex; 130 unsigned short mr_type; 131 unsigned short mr_alen; 132 unsigned char mr_address[8]; 133 }; 134 135 #define PACKET_MR_MULTICAST 0 136 #define PACKET_MR_PROMISC 1 137 #define PACKET_MR_ALLMULTI 2 138 139 #endif 140