Line data    Source code

       1             : #ifndef HEADER_fd_src_disco_shred_fd_fec_set_h
       2             : #define HEADER_fd_src_disco_shred_fd_fec_set_h
       3             : 
       4             : #include "../../ballet/shred/fd_shred.h"
       5             : #include "../../tango/fd_tango_base.h"
       6             : 
       7    14176347 : #define FD_FEC_SHRED_CNT 32
       8             : 
       9             : /* Maximum number of FECs in a slot is max number of shreds in a slot / 32 shreds per FEC */
      10        6729 : #define FD_FEC_BLK_MAX (FD_SHRED_BLK_MAX / FD_FEC_SHRED_CNT)
      11             : 
      12             : /* When using Merkle shreds, an FEC set is essentially the transmission
      13             :    granularity.  Each FEC set has likely dozens of packets, but you have
      14             :    to construct the entire FEC set before you can send the first byte.
      15             :    Similarly, on the receive side, in order to validate an FEC set, you
      16             :    have to receive or reconstruct the whole thing.  */
      17             : 
      18             : struct __attribute__((aligned(FD_CHUNK_ALIGN))) fd_fec_set {
      19             :   /* Compact bitset of whether we've received the shred or not. */
      20             :   uint data_shred_rcvd;
      21             :   uint parity_shred_rcvd;
      22             :   ulong turbine_shred_rcvd;
      23             :   ulong repair_shred_rcvd;
      24             : 
      25             :   union {
      26             :     fd_shred_t s[ 1 ];
      27             :     uchar      b[ FD_SHRED_MIN_SZ ]; /* data shreds never exceed min_sz */
      28             :   } data_shreds[ FD_FEC_SHRED_CNT ];
      29             :   union {
      30             :     fd_shred_t s[ 1 ];
      31             :     uchar      b[ FD_SHRED_MAX_SZ ];
      32             :   } parity_shreds[ FD_FEC_SHRED_CNT ];
      33             : 
      34             :   /* Only relevant for Frankendancer shred_store link.  When the
      35             :      shred tile publishes a leader FEC set to the store tile, it
      36             :      sets leader_bank and merkle_root which the store tile uses
      37             :      to set the block_id.  For network-produced FEC sets and for
      38             :      the Firedancer store path, leader_bank is NULL and merkle_root
      39             :      is undefined. */
      40             :   void const * leader_bank;
      41             :   uchar        merkle_root[ 32 ];
      42             : };
      43             : typedef struct fd_fec_set fd_fec_set_t;
      44             : 
      45             : #endif /* HEADER_fd_src_disco_shred_fd_fec_set_h */