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#ifndef __LINUX_IF_PACKET_H
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#define __LINUX_IF_PACKET_H
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struct sockaddr_pkt
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{
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        unsigned short spkt_family;
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        unsigned char spkt_device[14];
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        unsigned short spkt_protocol;
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};
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struct sockaddr_ll
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{
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        unsigned short  sll_family;
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        unsigned short  sll_protocol;
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        int             sll_ifindex;
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        unsigned short  sll_hatype;
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        unsigned char   sll_pkttype;
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        unsigned char   sll_halen;
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        unsigned char   sll_addr[8];
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};
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/* Packet types */
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#define PACKET_HOST             0               /* To us                */
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#define PACKET_BROADCAST        1               /* To all               */
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#define PACKET_MULTICAST        2               /* To group             */
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#define PACKET_OTHERHOST        3               /* To someone else      */
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#define PACKET_OUTGOING         4               /* Outgoing of any type */
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/* These ones are invisible by user level */
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#define PACKET_LOOPBACK         5               /* MC/BRD frame looped back */
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#define PACKET_FASTROUTE        6               /* Fastrouted frame     */
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/* Packet socket options */
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#define PACKET_ADD_MEMBERSHIP           1
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#define PACKET_DROP_MEMBERSHIP          2
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#define PACKET_RECV_OUTPUT              3
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/* Value 4 is still used by obsolete turbo-packet. */
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#define PACKET_RX_RING                  5
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#define PACKET_STATISTICS               6
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#define PACKET_COPY_THRESH              7
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struct tpacket_stats
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{
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        unsigned int    tp_packets;
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        unsigned int    tp_drops;
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};
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struct tpacket_hdr
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{
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        unsigned long   tp_status;
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#define TP_STATUS_KERNEL        0
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#define TP_STATUS_USER          1
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#define TP_STATUS_COPY          2
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#define TP_STATUS_LOSING        4
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#define TP_STATUS_CSUMNOTREADY  8
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        unsigned int    tp_len;
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        unsigned int    tp_snaplen;
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        unsigned short  tp_mac;
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        unsigned short  tp_net;
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        unsigned int    tp_sec;
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        unsigned int    tp_usec;
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};
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#define TPACKET_ALIGNMENT       16
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#define TPACKET_ALIGN(x)        (((x)+TPACKET_ALIGNMENT-1)&~(TPACKET_ALIGNMENT-1))
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#define TPACKET_HDRLEN          (TPACKET_ALIGN(sizeof(struct tpacket_hdr)) + sizeof(struct sockaddr_ll))
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/*
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   Frame structure:
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   - Start. Frame must be aligned to TPACKET_ALIGNMENT=16
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   - struct tpacket_hdr
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   - pad to TPACKET_ALIGNMENT=16
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   - struct sockaddr_ll
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   - Gap, chosen so that packet data (Start+tp_net) alignes to TPACKET_ALIGNMENT=16
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   - Start+tp_mac: [ Optional MAC header ]
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   - Start+tp_net: Packet data, aligned to TPACKET_ALIGNMENT=16.
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   - Pad to align to TPACKET_ALIGNMENT=16
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 */
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struct tpacket_req
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{
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        unsigned int    tp_block_size;  /* Minimal size of contiguous block */
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        unsigned int    tp_block_nr;    /* Number of blocks */
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        unsigned int    tp_frame_size;  /* Size of frame */
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        unsigned int    tp_frame_nr;    /* Total number of frames */
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};
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struct packet_mreq
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{
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        int             mr_ifindex;
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        unsigned short  mr_type;
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        unsigned short  mr_alen;
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        unsigned char   mr_address[8];
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};
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#define PACKET_MR_MULTICAST     0
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#define PACKET_MR_PROMISC       1
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#define PACKET_MR_ALLMULTI      2
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#endif