LCOV - code coverage report
Current view: top level - disco/topo - fd_topo.h (source / functions) Hit Total Coverage
Test: cov.lcov Lines: 23 149 15.4 %
Date: 2026-05-13 07:19:34 Functions: 5 2380 0.2 %

          Line data    Source code
       1             : #ifndef HEADER_fd_src_disco_topo_fd_topo_h
       2             : #define HEADER_fd_src_disco_topo_fd_topo_h
       3             : 
       4             : #include "../stem/fd_stem.h"
       5             : #include "../../tango/fd_tango.h"
       6             : #include "../../waltz/xdp/fd_xdp1.h"
       7             : #include "../../ballet/base58/fd_base58.h"
       8             : #include "../../flamenco/fd_flamenco_base.h"
       9             : #include "../../util/net/fd_net_headers.h"
      10             : 
      11             : /* Maximum number of workspaces that may be present in a topology. */
      12             : #define FD_TOPO_MAX_WKSPS         (256UL)
      13             : /* Maximum number of links that may be present in a topology. */
      14             : #define FD_TOPO_MAX_LINKS         (256UL)
      15             : /* Maximum number of tiles that may be present in a topology. */
      16           0 : #define FD_TOPO_MAX_TILES         (256UL)
      17             : /* Maximum number of objects that may be present in a topology. */
      18             : #define FD_TOPO_MAX_OBJS          (4096UL)
      19             : /* Maximum number of links that may go into any one tile in the
      20             :    topology. */
      21             : #define FD_TOPO_MAX_TILE_IN_LINKS  ( 128UL)
      22             : /* Maximum number of links that a tile may write to. */
      23             : #define FD_TOPO_MAX_TILE_OUT_LINKS ( 32UL)
      24             : /* Maximum number of objects that a tile can use. */
      25             : #define FD_TOPO_MAX_TILE_OBJS      ( 256UL)
      26             : 
      27             : /* Maximum number of additional ip addresses */
      28             : #define FD_NET_MAX_SRC_ADDR 4
      29             : 
      30             : /* Maximum number of additional destinations for leader shreds and for retransmitted shreds */
      31             : #define FD_TOPO_ADTL_DESTS_MAX ( 32UL)
      32             : 
      33           0 : #define FD_TOPO_CORE_DUMP_LEVEL_DISABLED (0)
      34           0 : #define FD_TOPO_CORE_DUMP_LEVEL_MINIMAL  (1)
      35           6 : #define FD_TOPO_CORE_DUMP_LEVEL_REGULAR  (2)
      36           0 : #define FD_TOPO_CORE_DUMP_LEVEL_FULL     (3)
      37           0 : #define FD_TOPO_CORE_DUMP_LEVEL_NEVER    (4)
      38             : 
      39             : /* A workspace is a Firedancer specific memory management structure that
      40             :    sits on top of 1 or more memory mapped gigantic or huge pages mounted
      41             :    to the hugetlbfs. */
      42             : typedef struct {
      43             :   ulong id;           /* The ID of this workspace.  Indexed from [0, wksp_cnt).  When placed in a topology, the ID must be the index of the workspace in the workspaces list. */
      44             :   char  name[ 14UL ]; /* The name of this workspace, like "pack".  There can be at most one of each workspace name in a topology. */
      45             : 
      46             :   ulong numa_idx;     /* The index of the NUMA node on the system that this workspace should be allocated from. */
      47             : 
      48             :   ulong min_part_max; /* Artificially raise part_max */
      49             :   ulong min_loose_sz; /* Artificially raise loose footprint */
      50             : 
      51             :   /* Computed fields.  These are not supplied as configuration but calculated as needed. */
      52             :   struct {
      53             :     ulong page_sz;  /* The size of the pages that this workspace is backed by.  One of FD_PAGE_SIZE_*. */
      54             :     ulong page_cnt; /* The number of pages that must be mapped to this workspace to store all the data needed by consumers. */
      55             :     ulong part_max; /* The maximum number of partitions in the underlying workspace.  There can only be this many allocations made at any one time. */
      56             : 
      57             :     int core_dump_level; /* The core dump level required to be set in the application configuration to have this workspace appear in core dumps. */
      58             : 
      59             :     fd_wksp_t * wksp;            /* The workspace memory in the local process. */
      60             :     ulong       known_footprint; /* Total size in bytes of all data in Firedancer that will be stored in this workspace at startup. */
      61             :     ulong       total_footprint; /* Total size in bytes of all data in Firedancer that could be stored in this workspace, includes known data and loose data. */
      62             :   };
      63             : } fd_topo_wksp_t;
      64             : 
      65             : /* A link is an mcache in a workspace that has one producer and one or
      66             :    more consumers. A link may optionally also have a dcache, that holds
      67             :    fragments referred to by the mcache entries.
      68             : 
      69             :    A link belongs to exactly one workspace.  A link has exactly one
      70             :    producer, and 1 or more consumers.  Each consumer is either reliable
      71             :    or not reliable.  A link has a depth and a MTU, which correspond to
      72             :    the depth and MTU of the mcache and dcache respectively.  A MTU of
      73             :    zero means no dcache is needed, as there is no data. */
      74             : typedef struct {
      75             :   ulong id;           /* The ID of this link.  Indexed from [0, link_cnt).  When placed in a topology, the ID must be the index of the link in the links list. */
      76             :   char  name[ 14UL ]; /* The name of this link, like "pack_execle". There can be multiple of each link name in a topology. */
      77             :   ulong kind_id;      /* The ID of this link within its name.  If there are N links of a particular name, they have IDs [0, N).  The pair (name, kind_id) uniquely identifies a link, as does "id" on its own. */
      78             : 
      79             :   ulong depth;    /* The depth of the mcache representing the link. */
      80             :   ulong mtu;      /* The MTU of data fragments in the mcache.  A value of 0 means there is no dcache. */
      81             :   ulong burst;    /* The max amount of MTU sized data fragments that might be bursted to the dcache. */
      82             : 
      83             :   ulong mcache_obj_id;
      84             :   ulong dcache_obj_id;
      85             : 
      86             :   /* Computed fields.  These are not supplied as configuration but calculated as needed. */
      87             :   struct {
      88             :     fd_frag_meta_t * mcache; /* The mcache of this link. */
      89             :     void *           dcache; /* The dcache of this link, if it has one. */
      90             :   };
      91             : 
      92             :   uint permit_no_consumers : 1;  /* Permit a topology where this link has no consumers */
      93             :   uint permit_no_producers : 1;  /* Permit a topology where this link has no producers */
      94             : } fd_topo_link_t;
      95             : 
      96             : /* Be careful: ip and host are in different byte order */
      97             : typedef struct {
      98             :   uint   ip;   /* in network byte order */
      99             :   ushort port; /* in host byte order */
     100             : } fd_topo_ip_port_t;
     101             : 
     102             : struct fd_topo_net_tile {
     103             :   ulong umem_dcache_obj_id;  /* dcache for XDP UMEM frames */
     104             :   uint  bind_address;
     105             : 
     106             :   ushort shred_listen_port;
     107             :   ushort quic_transaction_listen_port;
     108             :   ushort legacy_transaction_listen_port;
     109             :   ushort gossip_listen_port;
     110             :   ushort repair_intake_listen_port;
     111             :   ushort repair_serve_listen_port;
     112             :   ushort txsend_src_port;
     113             : };
     114             : typedef struct fd_topo_net_tile fd_topo_net_tile_t;
     115             : 
     116             : /* A tile is a unique process that is spawned by Firedancer to represent
     117             :    one thread of execution.  Firedancer sandboxes all tiles to their own
     118             :    process for security reasons.
     119             : 
     120             :    A tile belongs to exactly one workspace.  A tile is a consumer of 0
     121             :    or more links, it's inputs.  A tile is a producer of 0 or more output
     122             :    links.
     123             : 
     124             :    All input links will be automatically polled by the tile
     125             :    infrastructure, and output links will automatically source and manage
     126             :    credits from consumers. */
     127             : struct fd_topo_tile {
     128             :   ulong id;                     /* The ID of this tile.  Indexed from [0, tile_cnt).  When placed in a topology, the ID must be the index of the tile in the tiles list. */
     129             :   char  name[ 7UL ];            /* The name of this tile.  There can be multiple of each tile name in a topology. */
     130             :   ulong kind_id;                /* The ID of this tile within its name.  If there are n tile of a particular name, they have IDs [0, N).  The pair (name, kind_id) uniquely identifies a tile, as does "id" on its own. */
     131             :   int   is_agave;               /* If the tile needs to run in the Agave (Anza) address space or not. */
     132             :   int   allow_shutdown;         /* If the tile is allowed to shutdown gracefully.  If false, when the tile exits it will tear down the entire application. */
     133             : 
     134             :   ulong cpu_idx;                /* The CPU index to pin the tile on.  A value of ULONG_MAX or more indicates the tile should be floating and not pinned to a core. */
     135             : 
     136             :   ulong in_cnt;                 /* The number of links that this tile reads from. */
     137             :   ulong in_link_id[ FD_TOPO_MAX_TILE_IN_LINKS ];       /* The link_id of each link that this tile reads from, indexed in [0, in_cnt). */
     138             :   int   in_link_reliable[ FD_TOPO_MAX_TILE_IN_LINKS ]; /* If each link that this tile reads from is a reliable or unreliable consumer, indexed in [0, in_cnt). */
     139             :   int   in_link_poll[ FD_TOPO_MAX_TILE_IN_LINKS ];     /* If each link that this tile reads from should be polled by the tile infrastructure, indexed in [0, in_cnt).
     140             :                                                           If the link is not polled, the tile will not receive frags for it and the tile writer is responsible for
     141             :                                                           reading from the link.  The link must be marked as unreliable as it is not flow controlled. */
     142             : 
     143             :   ulong out_cnt;                                   /* The number of links that this tile writes to. */
     144             :   ulong out_link_id[ FD_TOPO_MAX_TILE_OUT_LINKS ]; /* The link_id of each link that this tile writes to, indexed in [0, link_cnt). */
     145             : 
     146             :   ulong tile_obj_id;
     147             :   ulong metrics_obj_id;
     148             :   ulong id_keyswitch_obj_id; /* keyswitch object id for identity key updates */
     149             :   ulong av_keyswitch_obj_id; /* keyswitch object id for authority key updates */
     150             :   ulong in_link_fseq_obj_id[ FD_TOPO_MAX_TILE_IN_LINKS ];
     151             : 
     152             :   ulong uses_obj_cnt;
     153             :   ulong uses_obj_id[ FD_TOPO_MAX_TILE_OBJS ];
     154             :   int   uses_obj_mode[ FD_TOPO_MAX_TILE_OBJS ];
     155             : 
     156             :   /* Computed fields.  These are not supplied as configuration but calculated as needed. */
     157             :   struct {
     158             :     ulong *    metrics; /* The shared memory for metrics that this tile should write.  Consumer by monitoring and metrics writing tiles. */
     159             : 
     160             :     /* The fseq of each link that this tile reads from.  Multiple fseqs
     161             :        may point to the link, if there are multiple consumers.  An fseq
     162             :        can be uniquely identified via (link_id, tile_id), or (link_kind,
     163             :        link_kind_id, tile_kind, tile_kind_id) */
     164             :     ulong *    in_link_fseq[ FD_TOPO_MAX_TILE_IN_LINKS ];
     165             :   };
     166             : 
     167             :   /* Configuration fields.  These are required to be known by the topology so it can determine the
     168             :      total size of Firedancer in memory. */
     169             :   union {
     170             :     fd_topo_net_tile_t net;
     171             : 
     172             :     struct {
     173             :       fd_topo_net_tile_t net;
     174             : 
     175             :       char if_virt[ 16 ];  /* device name (virtual, for routing) */
     176             :       char if_phys[ 16 ];  /* device name (physical, for RX/TX) */
     177             :       uint if_queue;       /* device queue index */
     178             : 
     179             :       /* xdp specific options */
     180             :       ulong  xdp_rx_queue_size;
     181             :       ulong  xdp_tx_queue_size;
     182             :       ulong  free_ring_depth;
     183             :       long   tx_flush_timeout_ns;
     184             :       char   xdp_mode[8];
     185             :       int    zero_copy;
     186             : 
     187             :       ulong netdev_dbl_buf_obj_id; /* dbl_buf containing netdev_tbl */
     188             :       ulong fib4_main_obj_id;      /* fib4 containing main route table */
     189             :       ulong fib4_local_obj_id;     /* fib4 containing local route table */
     190             :       ulong neigh4_obj_id;         /* neigh4 hash map */
     191             : 
     192             :       int xsk_core_dump;
     193             :     } xdp;
     194             : 
     195             :     struct {
     196             :       fd_topo_net_tile_t net;
     197             :       /* sock specific options */
     198             :       int so_sndbuf;
     199             :       int so_rcvbuf;
     200             :     } sock;
     201             : 
     202             :     struct {
     203             :       ulong netdev_dbl_buf_obj_id; /* dbl_buf containing netdev_tbl */
     204             :       ulong fib4_main_obj_id;      /* fib4 containing main route table */
     205             :       ulong fib4_local_obj_id;     /* fib4 containing local route table */
     206             :       char  neigh_if[ 16 ];        /* neigh4 interface name */
     207             :       ulong neigh4_obj_id;         /* neigh4 hash map */
     208             :     } netlink;
     209             : 
     210           0 : #define FD_TOPO_GOSSIP_ENTRYPOINTS_MAX 16UL
     211             : 
     212             :     struct {
     213             :       char identity_key_path[ PATH_MAX ];
     214             : 
     215             :       ulong         entrypoints_cnt;
     216             :       fd_ip4_port_t entrypoints[ FD_TOPO_GOSSIP_ENTRYPOINTS_MAX ];
     217             : 
     218             :       long boot_timestamp_nanos;
     219             : 
     220             :       ulong tcache_depth;
     221             : 
     222             :       ushort shred_version;
     223             :       int allow_private_address;
     224             :     } gossvf;
     225             : 
     226             :     struct {
     227             :       char identity_key_path[ PATH_MAX ];
     228             : 
     229             :       ulong         entrypoints_cnt;
     230             :       fd_ip4_port_t entrypoints[ FD_TOPO_GOSSIP_ENTRYPOINTS_MAX ];
     231             : 
     232             :       long boot_timestamp_nanos;
     233             : 
     234             :       uint   ip_addr;
     235             :       ushort shred_version;
     236             : 
     237             :       ulong  max_entries;
     238             :       ulong  max_purged;
     239             :       ulong  max_failed;
     240             : 
     241             :       fd_hash_t wait_for_supermajority_with_bank_hash;
     242             : 
     243             :       struct {
     244             :         ushort gossip;
     245             :         ushort tvu;
     246             :         ushort tvu_quic;
     247             :         ushort tpu;
     248             :         ushort tpu_quic;
     249             :         ushort repair;
     250             :       } ports;
     251             :     } gossip;
     252             : 
     253             :     struct {
     254             :       uint   out_depth;
     255             :       uint   reasm_cnt;
     256             :       ulong  max_concurrent_connections;
     257             :       ulong  max_concurrent_handshakes;
     258             :       ushort quic_transaction_listen_port;
     259             :       long   idle_timeout_millis;
     260             :       uint   ack_delay_millis;
     261             :       int    retry;
     262             :       char   key_log_path[ PATH_MAX ];
     263             :     } quic;
     264             : 
     265             :     struct {
     266             :       ulong tcache_depth;
     267             :     } verify;
     268             : 
     269             :     struct {
     270             :       ulong tcache_depth;
     271             :     } dedup;
     272             : 
     273             :     struct {
     274             :       char  url[ 256 ];
     275             :       ulong url_len;
     276             :       char  sni[ 256 ];
     277             :       ulong sni_len;
     278             :       char  identity_key_path[ PATH_MAX ];
     279             :       char  key_log_path[ PATH_MAX ];
     280             :       ulong buf_sz;
     281             :       ulong out_depth;
     282             :       ulong ssl_heap_sz;
     283             :       ulong keepalive_interval_nanos;
     284             :       uchar tls_cert_verify : 1;
     285             :     } bundle;
     286             : 
     287             :     struct {
     288             :       char  url[ 256 ];
     289             :       char  identity_key_path[ PATH_MAX ];
     290             :     } event;
     291             : 
     292             :     struct {
     293             :       ulong max_pending_transactions;
     294             :       ulong execle_tile_count;
     295             :       int   larger_max_cost_per_block;
     296             :       int   larger_shred_limits_per_block;
     297             :       int   use_consumed_cus;
     298             :       int   schedule_strategy;
     299             :       struct {
     300             :         int   enabled;
     301             :         uchar tip_distribution_program_addr[ 32 ];
     302             :         uchar tip_payment_program_addr[ 32 ];
     303             :         uchar tip_distribution_authority[ 32 ];
     304             :         ulong commission_bps;
     305             :         char  identity_key_path[ PATH_MAX ];
     306             :         char  vote_account_path[ PATH_MAX ]; /* or pubkey is okay */
     307             :       } bundle;
     308             :     } pack;
     309             : 
     310             :     struct {
     311             :       int   lagged_consecutive_leader_start;
     312             :       int   plugins_enabled;
     313             :       ulong execle_cnt;
     314             :       char  identity_key_path[ PATH_MAX ];
     315             :       struct {
     316             :         int   enabled;
     317             :         uchar tip_payment_program_addr[ 32 ];
     318             :         uchar tip_distribution_program_addr[ 32 ];
     319             :         char  vote_account_path[ PATH_MAX ];
     320             :       } bundle;
     321             :     } pohh;
     322             : 
     323             :     struct {
     324             :       ulong execle_cnt;
     325             :       char  identity_key_path[ PATH_MAX ];
     326             :     } poh;
     327             : 
     328             :     struct {
     329             :       ulong             depth;
     330             :       ulong             fec_resolver_depth;
     331             :       char              identity_key_path[ PATH_MAX ];
     332             :       ushort            shred_listen_port;
     333             :       int               larger_shred_limits_per_block;
     334             :       ushort            expected_shred_version;
     335             :       ulong             adtl_dests_retransmit_cnt;
     336             :       fd_topo_ip_port_t adtl_dests_retransmit[ FD_TOPO_ADTL_DESTS_MAX ];
     337             :       ulong             adtl_dests_leader_cnt;
     338             :       fd_topo_ip_port_t adtl_dests_leader[ FD_TOPO_ADTL_DESTS_MAX ];
     339             :     } shred;
     340             : 
     341             :     struct {
     342             :       ulong disable_blockstore_from_slot;
     343             :     } store;
     344             : 
     345             :     struct {
     346             :       char  identity_key_path[ PATH_MAX ];
     347             :       ulong authorized_voter_paths_cnt;
     348             :       char  authorized_voter_paths[ 16 ][ PATH_MAX ];
     349             :     } sign;
     350             : 
     351             :     struct {
     352             :       uint   listen_addr;
     353             :       ushort listen_port;
     354             : 
     355             :       int    is_voting;
     356             : 
     357             :       char   cluster[ 32 ];
     358             :       char   identity_key_path[ PATH_MAX ];
     359             :       char   vote_key_path[ PATH_MAX ];
     360             : 
     361             :       ulong  max_http_connections;
     362             :       ulong  max_websocket_connections;
     363             :       ulong  max_http_request_length;
     364             :       ulong  send_buffer_size_mb;
     365             :       int    schedule_strategy;
     366             : 
     367             :       int websocket_compression;
     368             :       int frontend_release_channel;
     369             :       ulong tile_cnt;
     370             : 
     371             :       char   wfs_bank_hash[ FD_BASE58_ENCODED_32_SZ ];
     372             :       ushort expected_shred_version;
     373             :     } gui;
     374             : 
     375             :     struct {
     376             :       uint   listen_addr;
     377             :       ushort listen_port;
     378             : 
     379             :       ulong max_http_connections;
     380             :       ulong send_buffer_size_mb;
     381             :       ulong max_http_request_length;
     382             : 
     383             :       ulong max_live_slots;
     384             :       ulong accdb_max_depth;
     385             : 
     386             :       char identity_key_path[ PATH_MAX ];
     387             :       int  delay_startup;
     388             :     } rpc;
     389             : 
     390             :     struct {
     391             :       uint   prometheus_listen_addr;
     392             :       ushort prometheus_listen_port;
     393             :     } metric;
     394             : 
     395             :     struct {
     396             :       int is_voting;
     397             :     } diag;
     398             : 
     399             :     struct {
     400             :       ulong fec_max;
     401             : 
     402             :       ulong txncache_obj_id;
     403             : 
     404             :       char  shred_cap[ PATH_MAX ];
     405             : 
     406             :       char  identity_key_path[ PATH_MAX ];
     407             :       uint  ip_addr;
     408             :       char  vote_account_path[ PATH_MAX ];
     409             : 
     410             :       fd_hash_t wait_for_supermajority_with_bank_hash;
     411             :       ushort expected_shred_version;
     412             :       int    wait_for_vote_to_start_leader;
     413             : 
     414             :       ulong heap_size_gib;
     415             :       ulong sched_depth;
     416             :       ulong max_live_slots;
     417             : 
     418             :       /* not specified in TOML */
     419             : 
     420             :       ulong enable_features_cnt;
     421             :       char  enable_features[ 16 ][ FD_BASE58_ENCODED_32_SZ ];
     422             : 
     423             :       char  genesis_path[ PATH_MAX ];
     424             : 
     425             :       int   larger_max_cost_per_block;
     426             : 
     427             :       ulong capture_start_slot;
     428             :       char  solcap_capture[ PATH_MAX ];
     429             :       char  dump_proto_dir[ PATH_MAX ];
     430             :       int   dump_block_to_pb;
     431             : 
     432             :       struct {
     433             :         int   enabled;
     434             :         uchar tip_payment_program_addr[ 32 ];
     435             :         uchar tip_distribution_program_addr[ 32 ];
     436             :         char  vote_account_path[ PATH_MAX ];
     437             :       } bundle;
     438             : 
     439             :     } replay;
     440             : 
     441             :     struct {
     442             :       ulong txncache_obj_id;
     443             :       ulong acc_pool_obj_id;
     444             : 
     445             :       ulong max_live_slots;
     446             :       ulong accdb_max_depth;
     447             : 
     448             :       ulong capture_start_slot;
     449             :       char  solcap_capture[ PATH_MAX ];
     450             :       char  dump_proto_dir[ PATH_MAX ];
     451             :       char  dump_syscall_name_filter[ PATH_MAX ];
     452             :       char  dump_instr_program_id_filter[ FD_BASE58_ENCODED_32_SZ ];
     453             :       int   dump_instr_to_pb;
     454             :       int   dump_txn_to_pb;
     455             :       int   dump_txn_as_fixture;
     456             :       int   dump_syscall_to_pb;
     457             :     } execrp;
     458             : 
     459             :     struct {
     460             :       ushort send_to_port;
     461             :       uint   send_to_ip_addr;
     462             :       ulong  conn_cnt;
     463             :       int    no_quic;
     464             :     } benchs;
     465             : 
     466             :     struct {
     467             :       ushort rpc_port;
     468             :       uint   rpc_ip_addr;
     469             :     } bencho;
     470             : 
     471             :     struct {
     472             :       ulong accounts_cnt;
     473             :       int   mode;
     474             :       float contending_fraction;
     475             :       float cu_price_spread;
     476             :     } benchg;
     477             : 
     478             :     struct {
     479             :       ushort  repair_intake_listen_port;
     480             :       ushort  repair_serve_listen_port;
     481             :       char    identity_key_path[ PATH_MAX ];
     482             :       ulong   max_pending_shred_sets;
     483             :       ulong   slot_max;
     484             : 
     485             :       /* non-config */
     486             : 
     487             :       ulong   repair_sign_depth;
     488             :       ulong   repair_sign_cnt;
     489             :     } repair;
     490             : 
     491             :     struct {
     492             :       ushort txsend_src_port;
     493             : 
     494             :       /* non-config */
     495             : 
     496             :       uint  ip_addr;
     497             :       char  identity_key_path[ PATH_MAX ];
     498             :     } txsend;
     499             : 
     500             :     struct {
     501             :       uint fake_dst_ip;
     502             :     } pktgen;
     503             : 
     504             :     struct {
     505             :       ulong end_slot;
     506             :       char  rocksdb_path[ PATH_MAX ];
     507             :       char  ingest_mode[ 32 ];
     508             : 
     509             :       /* Set internally by the archiver tile */
     510             :       int archive_fd;
     511             :     } archiver;
     512             : 
     513             :     struct {
     514             :       char  ledger_format[ 16 ];
     515             :       char  ledger_path[ PATH_MAX ];
     516             :       ulong end_slot;
     517             :       ulong root_distance;
     518             :     } backtest;
     519             : 
     520             :     struct {
     521             :       char   ledger_format[ 16 ];
     522             :       char   ledger_path[ PATH_MAX ];
     523             :       ulong  end_slot;
     524             :       ushort shred_listen_port;
     525             :     } forktest;
     526             : 
     527             :     struct {
     528             :       ulong authorized_voter_paths_cnt;
     529             :       char  authorized_voter_paths[ 16 ][ PATH_MAX ];
     530             :       int   hard_fork_fatal;
     531             :       int   wait_for_supermajority;
     532             :       ulong max_live_slots;
     533             :       ulong accdb_max_depth;
     534             :       char  identity_key[ PATH_MAX ];
     535             :       char  vote_account[ PATH_MAX ];
     536             :       char  base_path[PATH_MAX];
     537             :     } tower;
     538             : 
     539             :     struct {
     540             :       char   folder_path[ PATH_MAX ];
     541             :       ushort repair_intake_listen_port;
     542             :       ulong   write_buffer_size; /* Size of the write buffer for the capture tile */
     543             :       int    enable_publish_stake_weights;
     544             :       char   manifest_path[ PATH_MAX ];
     545             : 
     546             :       /* Set internally by the capture tile */
     547             :       int shreds_fd;
     548             :       int requests_fd;
     549             :       int fecs_fd;
     550             :       int peers_fd;
     551             :       int bank_hashes_fd;
     552             :       int slices_fd;
     553             :     } shredcap;
     554             : 
     555             : #define FD_TOPO_SNAPSHOTS_GOSSIP_LIST_MAX      (32UL)
     556           0 : #define FD_TOPO_SNAPSHOTS_SERVERS_MAX          (16UL)
     557           0 : #define FD_TOPO_MAX_RESOLVED_ADDRS             ( 4UL)
     558           0 : #define FD_TOPO_SNAPSHOTS_SERVERS_MAX_RESOLVED (FD_TOPO_MAX_RESOLVED_ADDRS*FD_TOPO_SNAPSHOTS_SERVERS_MAX)
     559             : 
     560             :     struct fd_topo_tile_snapct {
     561             :       char snapshots_path[ PATH_MAX ];
     562             : 
     563             :       struct {
     564             :         uint max_local_full_effective_age;
     565             :         uint max_local_incremental_age;
     566             : 
     567             :         struct {
     568             :           int         allow_any;
     569             :           ulong       allow_list_cnt;
     570             :           fd_pubkey_t allow_list[ FD_TOPO_SNAPSHOTS_GOSSIP_LIST_MAX ];
     571             :           ulong       block_list_cnt;
     572             :           fd_pubkey_t block_list[ FD_TOPO_SNAPSHOTS_GOSSIP_LIST_MAX ];
     573             :         } gossip;
     574             : 
     575             :         ulong         servers_cnt;
     576             :         struct {
     577             :           fd_ip4_port_t addr;
     578             :           char          hostname[ 256UL ];
     579             :           int           is_https;
     580             :         } servers[ FD_TOPO_SNAPSHOTS_SERVERS_MAX_RESOLVED ];
     581             :       } sources;
     582             : 
     583             :       int  incremental_snapshots;
     584             :       uint max_full_snapshots_to_keep;
     585             :       uint max_incremental_snapshots_to_keep;
     586             :       uint max_retry_abort;
     587             : 
     588             :       uint target_uid;
     589             :       uint target_gid;
     590             :     } snapct;
     591             : 
     592             :     struct {
     593             :       char snapshots_path[ PATH_MAX ];
     594             :       int  incremental_snapshots;
     595             :       uint min_download_speed_mibs;
     596             :     } snapld;
     597             : 
     598             :     struct {
     599             :       ulong max_live_slots;
     600             :       ulong accdb_max_depth;
     601             :       ulong funk_obj_id;
     602             :       ulong funk_locks_obj_id;
     603             :       ulong txncache_obj_id;
     604             : 
     605             :       uint  lthash_disabled : 1;
     606             :     } snapin;
     607             : 
     608             :     struct {
     609             : 
     610             :       uint   bind_address;
     611             :       ushort bind_port;
     612             : 
     613             :       ushort expected_shred_version;
     614             :       ulong entrypoints_cnt;
     615             :       fd_ip4_port_t entrypoints[ FD_TOPO_GOSSIP_ENTRYPOINTS_MAX ];
     616             :     } ipecho;
     617             : 
     618             :     struct {
     619             :       ulong max_live_slots;
     620             :       ulong accdb_max_depth;
     621             :       ulong txncache_obj_id;
     622             :       ulong acc_pool_obj_id;
     623             :     } execle;
     624             : 
     625             :     struct {
     626             :       int validate_genesis_hash;
     627             :       int allow_download;
     628             : 
     629             :       ushort expected_shred_version;
     630             :       ulong entrypoints_cnt;
     631             :       fd_ip4_port_t entrypoints[ FD_TOPO_GOSSIP_ENTRYPOINTS_MAX ];
     632             : 
     633             :       int has_expected_genesis_hash;
     634             :       uchar expected_genesis_hash[ 32UL ];
     635             : 
     636             :       char genesis_path[ PATH_MAX ];
     637             : 
     638             :       uint target_gid;
     639             :       uint target_uid;
     640             : 
     641             :       ulong accdb_max_depth;
     642             :     } genesi;
     643             : 
     644             :     struct {
     645             :       ulong capture_start_slot;
     646             :       char  solcap_capture[ PATH_MAX ];
     647             :       int   recent_only;
     648             :       ulong recent_slots_per_file;
     649             :     } solcap;
     650             : 
     651             :     struct {
     652             :       ulong accdb_max_depth;
     653             :     } resolv;
     654             :   };
     655             : };
     656             : 
     657             : typedef struct fd_topo_tile fd_topo_tile_t;
     658             : 
     659             : typedef struct {
     660             :   ulong id;
     661             :   char  name[ 13UL ];  /* object type */
     662             :   ulong wksp_id;
     663             : 
     664             :   /* Optional label for object */
     665             :   char  label[ 13UL ];  /* object label */
     666             :   ulong label_idx;      /* index of object for this label (ULONG_MAX if not labelled) */
     667             : 
     668             :   ulong offset;
     669             :   ulong footprint;
     670             : } fd_topo_obj_t;
     671             : 
     672             : /* An fd_topo_t represents the overall structure of a Firedancer
     673             :    configuration, describing all the workspaces, tiles, and links
     674             :    between them. */
     675             : struct fd_topo {
     676             :   char           app_name[ 256UL ];
     677             :   uchar          props[ 32768UL ];
     678             : 
     679             :   ulong          wksp_cnt;
     680             :   ulong          link_cnt;
     681             :   ulong          tile_cnt;
     682             :   ulong          obj_cnt;
     683             : 
     684             :   fd_topo_wksp_t workspaces[ FD_TOPO_MAX_WKSPS ];
     685             :   fd_topo_link_t links[ FD_TOPO_MAX_LINKS ];
     686             :   fd_topo_tile_t tiles[ FD_TOPO_MAX_TILES ];
     687             :   fd_topo_obj_t  objs[ FD_TOPO_MAX_OBJS ];
     688             : 
     689             :   ulong          agave_affinity_cnt;
     690             :   ulong          agave_affinity_cpu_idx[ FD_TILE_MAX ];
     691             :   ulong          blocklist_cores_cnt;
     692             :   ulong          blocklist_cores_cpu_idx[ FD_TILE_MAX ];
     693             : 
     694             :   ulong          max_page_size; /* 2^21 or 2^30 */
     695             :   ulong          gigantic_page_threshold; /* see [hugetlbfs.gigantic_page_threshold_mib]*/
     696             : };
     697             : typedef struct fd_topo fd_topo_t;
     698             : 
     699             : typedef struct {
     700             :   char const * name;
     701             : 
     702             :   int          keep_host_networking;
     703             :   int          allow_connect;
     704             :   int          allow_renameat;
     705             :   ulong        rlimit_file_cnt;
     706             :   ulong        rlimit_address_space;
     707             :   ulong        rlimit_data;
     708             :   ulong        rlimit_nproc;
     709             :   int          for_tpool;
     710             : 
     711             :   ulong (*populate_allowed_seccomp)( fd_topo_t const * topo, fd_topo_tile_t const * tile, ulong out_cnt, struct sock_filter * out );
     712             :   ulong (*populate_allowed_fds    )( fd_topo_t const * topo, fd_topo_tile_t const * tile, ulong out_fds_sz, int * out_fds );
     713             :   ulong (*scratch_align           )( void );
     714             :   ulong (*scratch_footprint       )( fd_topo_tile_t const * tile );
     715             :   ulong (*loose_footprint         )( fd_topo_tile_t const * tile );
     716             :   void  (*privileged_init         )( fd_topo_t * topo, fd_topo_tile_t * tile );
     717             :   void  (*unprivileged_init       )( fd_topo_t * topo, fd_topo_tile_t * tile );
     718             :   void  (*run                     )( fd_topo_t * topo, fd_topo_tile_t * tile );
     719             :   ulong (*rlimit_file_cnt_fn      )( fd_topo_t const * topo, fd_topo_tile_t const * tile );
     720             : } fd_topo_run_tile_t;
     721             : 
     722             : struct fd_topo_obj_callbacks {
     723             :   char const * name;
     724             :   ulong (* footprint )( fd_topo_t const * topo, fd_topo_obj_t const * obj );
     725             :   ulong (* align     )( fd_topo_t const * topo, fd_topo_obj_t const * obj );
     726             :   ulong (* loose     )( fd_topo_t const * topo, fd_topo_obj_t const * obj );
     727             :   void  (* new       )( fd_topo_t const * topo, fd_topo_obj_t const * obj );
     728             : };
     729             : 
     730             : typedef struct fd_topo_obj_callbacks fd_topo_obj_callbacks_t;
     731             : 
     732             : FD_PROTOTYPES_BEGIN
     733             : 
     734             : FD_FN_CONST static inline ulong
     735           0 : fd_topo_workspace_align( void ) {
     736             :   /* This needs to be the max( align ) of all the child members that
     737             :      could be aligned into this workspace, otherwise our footprint
     738             :      calculation will not be correct.  For now just set to 4096 but this
     739             :      should probably be calculated dynamically, or we should reduce
     740             :      those child aligns if we can. */
     741           0 :   return 4096UL;
     742           0 : }
     743             : 
     744             : void *
     745             : fd_topo_obj_laddr( fd_topo_t const * topo,
     746             :                    ulong             obj_id );
     747             : 
     748             : /* Returns a pointer in the local address space to the base address of
     749             :    the workspace out of which the given object was allocated. */
     750             : 
     751             : static inline void *
     752             : fd_topo_obj_wksp_base( fd_topo_t const * topo,
     753           0 :                        ulong             obj_id ) {
     754           0 :   FD_TEST( obj_id<FD_TOPO_MAX_OBJS );
     755           0 :   fd_topo_obj_t const * obj = &topo->objs[ obj_id ];
     756           0 :   FD_TEST( obj->id == obj_id );
     757           0 :   ulong const wksp_id = obj->wksp_id;
     758             : 
     759           0 :   FD_TEST( wksp_id<FD_TOPO_MAX_WKSPS );
     760           0 :   fd_topo_wksp_t const * wksp = &topo->workspaces[ wksp_id ];
     761           0 :   FD_TEST( wksp->id == wksp_id );
     762           0 :   return wksp->wksp;
     763           0 : }
     764             : 
     765             : FD_FN_PURE static inline ulong
     766             : fd_topo_tile_name_cnt( fd_topo_t const * topo,
     767           3 :                        char const *      name ) {
     768           3 :   ulong cnt = 0;
     769           6 :   for( ulong i=0; i<topo->tile_cnt; i++ ) {
     770           3 :     if( FD_UNLIKELY( !strcmp( topo->tiles[ i ].name, name ) ) ) cnt++;
     771           3 :   }
     772           3 :   return cnt;
     773           3 : }
     774             : 
     775             : /* Finds the workspace of a given name in the topology.  Returns
     776             :    ULONG_MAX if there is no such workspace.  There can be at most one
     777             :    workspace of a given name. */
     778             : 
     779             : FD_FN_PURE static inline ulong
     780             : fd_topo_find_wksp( fd_topo_t const * topo,
     781          66 :                    char const *      name ) {
     782          66 :   for( ulong i=0; i<topo->wksp_cnt; i++ ) {
     783          66 :     if( FD_UNLIKELY( !strcmp( topo->workspaces[ i ].name, name ) ) ) return i;
     784          66 :   }
     785           0 :   return ULONG_MAX;
     786          66 : }
     787             : 
     788             : /* Find the tile of a given name and kind_id in the topology, there will
     789             :    be at most one such tile, since kind_id is unique among the name.
     790             :    Returns ULONG_MAX if there is no such tile. */
     791             : 
     792             : FD_FN_PURE static inline ulong
     793             : fd_topo_find_tile( fd_topo_t const * topo,
     794             :                    char const *      name,
     795          21 :                    ulong             kind_id ) {
     796          21 :   for( ulong i=0; i<topo->tile_cnt; i++ ) {
     797          21 :     if( FD_UNLIKELY( !strcmp( topo->tiles[ i ].name, name ) ) && topo->tiles[ i ].kind_id == kind_id ) return i;
     798          21 :   }
     799           0 :   return ULONG_MAX;
     800          21 : }
     801             : 
     802             : /* Find the link of a given name and kind_id in the topology, there will
     803             :    be at most one such link, since kind_id is unique among the name.
     804             :    Returns ULONG_MAX if there is no such link. */
     805             : 
     806             : FD_FN_PURE static inline ulong
     807             : fd_topo_find_link( fd_topo_t const * topo,
     808             :                    char const *      name,
     809          18 :                    ulong             kind_id ) {
     810          39 :   for( ulong i=0; i<topo->link_cnt; i++ ) {
     811          39 :     if( FD_UNLIKELY( !strcmp( topo->links[ i ].name, name ) ) && topo->links[ i ].kind_id == kind_id ) return i;
     812          39 :   }
     813           0 :   return ULONG_MAX;
     814          18 : }
     815             : 
     816             : FD_FN_PURE static inline ulong
     817             : fd_topo_find_tile_in_link( fd_topo_t const *      topo,
     818             :                            fd_topo_tile_t const * tile,
     819             :                            char const *           name,
     820           0 :                            ulong                  kind_id ) {
     821           0 :   for( ulong i=0; i<tile->in_cnt; i++ ) {
     822           0 :     if( FD_UNLIKELY( !strcmp( topo->links[ tile->in_link_id[ i ] ].name, name ) )
     823           0 :         && topo->links[ tile->in_link_id[ i ] ].kind_id == kind_id ) return i;
     824           0 :   }
     825           0 :   return ULONG_MAX;
     826           0 : }
     827             : 
     828             : FD_FN_PURE static inline ulong
     829             : fd_topo_find_tile_out_link( fd_topo_t const *      topo,
     830             :                             fd_topo_tile_t const * tile,
     831             :                             char const *           name,
     832           0 :                             ulong                  kind_id ) {
     833           0 :   for( ulong i=0; i<tile->out_cnt; i++ ) {
     834           0 :     if( FD_UNLIKELY( !strcmp( topo->links[ tile->out_link_id[ i ] ].name, name ) )
     835           0 :         && topo->links[ tile->out_link_id[ i ] ].kind_id == kind_id ) return i;
     836           0 :   }
     837           0 :   return ULONG_MAX;
     838           0 : }
     839             : 
     840             : /* Find the id of the tile which is a producer for the given link.  If
     841             :    no tile is a producer for the link, returns ULONG_MAX.  This should
     842             :    not be possible for a well formed and validated topology.  */
     843             : FD_FN_PURE static inline ulong
     844             : fd_topo_find_link_producer( fd_topo_t const *      topo,
     845           0 :                             fd_topo_link_t const * link ) {
     846           0 :   for( ulong i=0; i<topo->tile_cnt; i++ ) {
     847           0 :     fd_topo_tile_t const * tile = &topo->tiles[ i ];
     848             : 
     849           0 :     for( ulong j=0; j<tile->out_cnt; j++ ) {
     850           0 :       if( FD_UNLIKELY( tile->out_link_id[ j ] == link->id ) ) return i;
     851           0 :     }
     852           0 :   }
     853           0 :   return ULONG_MAX;
     854           0 : }
     855             : 
     856             : /* Given a link, count the number of consumers of that link among all
     857             :    the tiles in the topology. */
     858             : FD_FN_PURE static inline ulong
     859             : fd_topo_link_consumer_cnt( fd_topo_t const *      topo,
     860           0 :                            fd_topo_link_t const * link ) {
     861           0 :   ulong cnt = 0;
     862           0 :   for( ulong i=0; i<topo->tile_cnt; i++ ) {
     863           0 :     fd_topo_tile_t const * tile = &topo->tiles[ i ];
     864           0 :     for( ulong j=0; j<tile->in_cnt; j++ ) {
     865           0 :       if( FD_UNLIKELY( tile->in_link_id[ j ] == link->id ) ) cnt++;
     866           0 :     }
     867           0 :   }
     868             : 
     869           0 :   return cnt;
     870           0 : }
     871             : 
     872             : /* Given a link, count the number of reliable consumers of that link
     873             :    among all the tiles in the topology. */
     874             : FD_FN_PURE static inline ulong
     875             : fd_topo_link_reliable_consumer_cnt( fd_topo_t const *      topo,
     876           0 :                                     fd_topo_link_t const * link ) {
     877           0 :   ulong cnt = 0;
     878           0 :   for( ulong i=0; i<topo->tile_cnt; i++ ) {
     879           0 :     fd_topo_tile_t const * tile = &topo->tiles[ i ];
     880           0 :     for( ulong j=0; j<tile->in_cnt; j++ ) {
     881           0 :       if( FD_UNLIKELY( tile->in_link_id[ j ] == link->id && tile->in_link_reliable[ j ] ) ) cnt++;
     882           0 :     }
     883           0 :   }
     884           0 : 
     885           0 :   return cnt;
     886           0 : }
     887             : 
     888             : FD_FN_PURE static inline ulong
     889             : fd_topo_tile_consumer_cnt( fd_topo_t const *      topo,
     890           0 :                            fd_topo_tile_t const * tile ) {
     891           0 :   (void)topo;
     892           0 :   return tile->out_cnt;
     893           0 : }
     894             : 
     895             : FD_FN_PURE static inline ulong
     896             : fd_topo_tile_reliable_consumer_cnt( fd_topo_t const *      topo,
     897           0 :                                     fd_topo_tile_t const * tile ) {
     898           0 :   ulong reliable_cons_cnt = 0UL;
     899           0 :   for( ulong i=0UL; i<topo->tile_cnt; i++ ) {
     900           0 :     fd_topo_tile_t const * consumer_tile = &topo->tiles[ i ];
     901           0 :     for( ulong j=0UL; j<consumer_tile->in_cnt; j++ ) {
     902           0 :       for( ulong k=0UL; k<tile->out_cnt; k++ ) {
     903           0 :         if( FD_UNLIKELY( consumer_tile->in_link_id[ j ]==tile->out_link_id[ k ] && consumer_tile->in_link_reliable[ j ] ) ) {
     904           0 :           reliable_cons_cnt++;
     905           0 :         }
     906           0 :       }
     907           0 :     }
     908           0 :   }
     909           0 :   return reliable_cons_cnt;
     910           0 : }
     911             : 
     912             : FD_FN_PURE static inline ulong
     913             : fd_topo_tile_producer_cnt( fd_topo_t const *     topo,
     914           0 :                            fd_topo_tile_t const * tile ) {
     915           0 :   (void)topo;
     916           0 :   ulong in_cnt = 0UL;
     917           0 :   for( ulong i=0UL; i<tile->in_cnt; i++ ) {
     918           0 :     if( FD_UNLIKELY( !tile->in_link_poll[ i ] ) ) continue;
     919           0 :     in_cnt++;
     920           0 :   }
     921           0 :   return in_cnt;
     922           0 : }
     923             : 
     924             : FD_FN_PURE FD_FN_UNUSED static ulong
     925             : fd_topo_obj_cnt( fd_topo_t const * topo,
     926             :                  char const *      obj_type,
     927           0 :                  char const *      label ) {
     928           0 :   ulong cnt = 0UL;
     929           0 :   for( ulong i=0UL; i<topo->obj_cnt; i++ ) {
     930           0 :     fd_topo_obj_t const * obj = &topo->objs[ i ];
     931           0 :     if( strncmp( obj->name, obj_type, sizeof(obj->name) ) ) continue;
     932           0 :     if( label &&
     933           0 :         strncmp( obj->label, label, sizeof(obj->label) ) ) continue;
     934           0 :     cnt++;
     935           0 :   }
     936           0 :   return cnt;
     937           0 : }
     938             : 
     939             : FD_FN_PURE FD_FN_UNUSED static fd_topo_obj_t const *
     940             : fd_topo_find_obj( fd_topo_t const * topo,
     941             :                   char const *      obj_type,
     942             :                   char const *      label,
     943           0 :                   ulong             label_idx ) {
     944           0 :   for( ulong i=0UL; i<topo->obj_cnt; i++ ) {
     945           0 :     fd_topo_obj_t const * obj = &topo->objs[ i ];
     946           0 :     if( strncmp( obj->name, obj_type, sizeof(obj->name) ) ) continue;
     947           0 :     if( label &&
     948           0 :         strncmp( obj->label, label, sizeof(obj->label) ) ) continue;
     949           0 :     if( label_idx != ULONG_MAX && obj->label_idx != label_idx ) continue;
     950           0 :     return obj;
     951           0 :   }
     952           0 :   return NULL;
     953           0 : }
     954             : 
     955             : FD_FN_PURE FD_FN_UNUSED static fd_topo_obj_t const *
     956             : fd_topo_find_tile_obj( fd_topo_t const *      topo,
     957             :                        fd_topo_tile_t const * tile,
     958           0 :                        char const *           obj_type ) {
     959           0 :   for( ulong i=0UL; i<(tile->uses_obj_cnt); i++ ) {
     960           0 :     fd_topo_obj_t const * obj = &topo->objs[ tile->uses_obj_id[ i ] ];
     961           0 :     if( strncmp( obj->name, obj_type, sizeof(obj->name) ) ) continue;
     962           0 :     return obj;
     963           0 :   }
     964           0 :   return NULL;
     965           0 : }
     966             : 
     967             : /* Join (map into the process) all shared memory (huge/gigantic pages)
     968             :    needed by the tile, in the given topology.  All memory associated
     969             :    with the tile (aka. used by links that the tile either produces to or
     970             :    consumes from, or used by the tile itself for its cnc) will be
     971             :    attached (mapped into the process).
     972             : 
     973             :    This is needed to play nicely with the sandbox.  Once a process is
     974             :    sandboxed we can no longer map any memory. */
     975             : void
     976             : fd_topo_join_tile_workspaces( fd_topo_t *      topo,
     977             :                               fd_topo_tile_t * tile,
     978             :                               int              core_dump_level );
     979             : 
     980             : /* Join (map into the process) the shared memory (huge/gigantic pages)
     981             :    for the given workspace.  Mode is one of
     982             :    FD_SHMEM_JOIN_MODE_READ_WRITE or FD_SHMEM_JOIN_MODE_READ_ONLY and
     983             :    determines the prot argument that will be passed to mmap when mapping
     984             :    the pages in (PROT_WRITE or PROT_READ respectively).
     985             : 
     986             :    Dump should be set to 1 if the workspace memory should be dumpable
     987             :    when the process crashes, or 0 if not. */
     988             : void
     989             : fd_topo_join_workspace( fd_topo_t *      topo,
     990             :                         fd_topo_wksp_t * wksp,
     991             :                         int              mode,
     992             :                         int              dump );
     993             : 
     994             : /* Join (map into the process) all shared memory (huge/gigantic pages)
     995             :    needed by all tiles in the topology.  Mode is one of
     996             :    FD_SHMEM_JOIN_MODE_READ_WRITE or FD_SHMEM_JOIN_MODE_READ_ONLY and
     997             :    determines the prot argument that will be passed to mmap when
     998             :    mapping the pages in (PROT_WRITE or PROT_READ respectively). */
     999             : void
    1000             : fd_topo_join_workspaces( fd_topo_t *  topo,
    1001             :                          int          mode,
    1002             :                          int          core_dump_level );
    1003             : 
    1004             : /* Leave (unmap from the process) the shared memory needed for the
    1005             :    given workspace in the topology, if it was previously mapped.
    1006             : 
    1007             :    topo and wksp are assumed non-NULL.  It is OK if the workspace
    1008             :    has not been previously joined, in which case this is a no-op. */
    1009             : 
    1010             : void
    1011             : fd_topo_leave_workspace( fd_topo_t *      topo,
    1012             :                          fd_topo_wksp_t * wksp );
    1013             : 
    1014             : /* Leave (unmap from the process) all shared memory needed by all
    1015             :    tiles in the topology, if each of them was mapped.
    1016             : 
    1017             :    topo is assumed non-NULL.  Only workspaces which were previously
    1018             :    joined are unmapped. */
    1019             : 
    1020             : void
    1021             : fd_topo_leave_workspaces( fd_topo_t * topo );
    1022             : 
    1023             : /* Create the given workspace needed by the topology on the system.
    1024             :    This does not "join" the workspaces (map their memory into the
    1025             :    process), but only creates the .wksp file and formats it correctly
    1026             :    as a workspace.
    1027             : 
    1028             :    Returns 0 on success and -1 on failure, with errno set to the error.
    1029             :    The only reason for failure currently that will be returned is
    1030             :    ENOMEM, as other unexpected errors will cause the program to exit.
    1031             : 
    1032             :    If update_existing is 1, the workspace will not be created from
    1033             :    scratch but it will be assumed that it already exists from a prior
    1034             :    run and needs to be maybe resized and then have the header
    1035             :    structures reinitialized.  This can save a very expensive operation
    1036             :    of zeroing all of the workspace pages.  This is dangerous in
    1037             :    production because it can leave stray memory from prior runs around,
    1038             :    and should only be used in development environments. */
    1039             : 
    1040             : int
    1041             : fd_topo_create_workspace( fd_topo_t *      topo,
    1042             :                           fd_topo_wksp_t * wksp,
    1043             :                           int              update_existing );
    1044             : 
    1045             : /* Join the standard IPC objects needed by the topology of this particular
    1046             :    tile */
    1047             : 
    1048             : void
    1049             : fd_topo_fill_tile( fd_topo_t *      topo,
    1050             :                    fd_topo_tile_t * tile );
    1051             : 
    1052             : /* Same as fd_topo_fill_tile but fills in all the objects for a
    1053             :    particular workspace with the given mode. */
    1054             : void
    1055             : fd_topo_workspace_fill( fd_topo_t *      topo,
    1056             :                         fd_topo_wksp_t * wksp );
    1057             : 
    1058             : /* Apply a new function to every object that is resident in the given
    1059             :    workspace in the topology. */
    1060             : 
    1061             : void
    1062             : fd_topo_wksp_new( fd_topo_t const *          topo,
    1063             :                   fd_topo_wksp_t const *     wksp,
    1064             :                   fd_topo_obj_callbacks_t ** callbacks );
    1065             : 
    1066             : /* Same as fd_topo_fill_tile but fills in all tiles in the topology. */
    1067             : 
    1068             : void
    1069             : fd_topo_fill( fd_topo_t * topo );
    1070             : 
    1071             : /* fd_topo_tile_stack_join joins a huge page optimized stack for the
    1072             :    provided tile.  The stack is assumed to already exist at a known
    1073             :    path in the hugetlbfs mount. */
    1074             : 
    1075             : void *
    1076             : fd_topo_tile_stack_join( char const * app_name,
    1077             :                          char const * tile_name,
    1078             :                          ulong        tile_kind_id );
    1079             : 
    1080             : /* fd_topo_run_single_process runs all the tiles in a single process
    1081             :    (the calling process).  This spawns a thread for each tile, switches
    1082             :    that thread to the given UID and GID and then runs the tile in it.
    1083             :    Each thread will never exit, as tiles are expected to run forever.
    1084             :    An error is logged and the application will exit if a tile exits.
    1085             :    The function itself does return after spawning all the threads.
    1086             : 
    1087             :    The threads will not be sandboxed in any way, except switching to the
    1088             :    provided UID and GID, so they will share the same address space, and
    1089             :    not have any seccomp restrictions or use any Linux namespaces.  The
    1090             :    calling thread will also switch to the provided UID and GID before
    1091             :    it returns.
    1092             : 
    1093             :    In production, when running with an Agave child process this is
    1094             :    used for spawning certain tiles inside the Agave address space.
    1095             :    It's also useful for tooling and debugging, but is not how the main
    1096             :    production Firedancer process runs.  For production, each tile is run
    1097             :    in its own address space with a separate process and full security
    1098             :    sandbox.
    1099             : 
    1100             :    The agave argument determines which tiles are started.  If the
    1101             :    argument is 0 or 1, only non-agave (or only agave) tiles are started.
    1102             :    If the argument is any other value, all tiles in the topology are
    1103             :    started regardless of if they are Agave tiles or not. */
    1104             : 
    1105             : void
    1106             : fd_topo_run_single_process( fd_topo_t *       topo,
    1107             :                             int               agave,
    1108             :                             uint              uid,
    1109             :                             uint              gid,
    1110             :                             fd_topo_run_tile_t (* tile_run )( fd_topo_tile_t const * tile ) );
    1111             : 
    1112             : /* fd_topo_run_tile runs the given tile directly within the current
    1113             :    process (and thread).  The function will never return, as tiles are
    1114             :    expected to run forever.  An error is logged and the application will
    1115             :    exit if the tile exits.
    1116             : 
    1117             :    The sandbox argument determines if the current process will be
    1118             :    sandboxed fully before starting the tile.  The thread will switch to
    1119             :    the UID and GID provided before starting the tile, even if the thread
    1120             :    is not being sandboxed.  Although POSIX specifies that all threads in
    1121             :    a process must share a UID and GID, this is not the case on Linux.
    1122             :    The thread will switch to the provided UID and GID without switching
    1123             :    the other threads in the process.
    1124             : 
    1125             :    If keep_controlling_terminal is set to 0, and the sandbox is enabled
    1126             :    the controlling terminal will be detached as an additional sandbox
    1127             :    measure, but you will not be able to send Ctrl+C or other signals
    1128             :    from the terminal.  See fd_sandbox.h for more information.
    1129             : 
    1130             :    The allow_fd argument is only used if sandbox is true, and is a file
    1131             :    descriptor which will be allowed to exist in the process.  Normally
    1132             :    the sandbox code rejects and aborts if there is an unexpected file
    1133             :    descriptor present on boot.  This is helpful to allow a parent
    1134             :    process to be notified on termination of the tile by waiting for a
    1135             :    pipe file descriptor to get closed.
    1136             : 
    1137             :    wait and debugger are both used in debugging.  If wait is non-NULL,
    1138             :    the runner will wait until the value pointed to by wait is non-zero
    1139             :    before launching the tile.  Likewise, if debugger is non-NULL, the
    1140             :    runner will wait until a debugger is attached before setting the
    1141             :    value pointed to by debugger to non-zero.  These are intended to be
    1142             :    used as a pair, where many tiles share a waiting reference, and then
    1143             :    one of the tiles (a tile you want to attach the debugger to) has the
    1144             :    same reference provided as the debugger, so all tiles will stop and
    1145             :    wait for the debugger to attach to it before proceeding. */
    1146             : 
    1147             : void
    1148             : fd_topo_run_tile( fd_topo_t *          topo,
    1149             :                   fd_topo_tile_t *     tile,
    1150             :                   int                  sandbox,
    1151             :                   int                  keep_controlling_terminal,
    1152             :                   int                  dumpable,
    1153             :                   uint                 uid,
    1154             :                   uint                 gid,
    1155             :                   int                  allow_fd,
    1156             :                   fd_topo_run_tile_t * tile_run );
    1157             : 
    1158             : /* This is for determining the value of RLIMIT_MLOCK that we need to
    1159             :    successfully run all tiles in separate processes.  The value returned
    1160             :    is the maximum amount of memory that will be locked with mlock() by
    1161             :    any individual process in the tree.  Specifically, if we have three
    1162             :    tile processes, and they each need to lock 5, 9, and 2 MiB of memory
    1163             :    respectively, RLIMIT_MLOCK needs to be 9 MiB to allow all three
    1164             :    process mlock() calls to succeed.
    1165             : 
    1166             :    Tiles lock memory in three ways.  Any workspace they are using, they
    1167             :    lock the entire workspace.  Then each tile uses huge pages for the
    1168             :    stack which are also locked, and finally some tiles use private
    1169             :    locked mmaps outside the workspace for storing key material.  The
    1170             :    results here include all of this memory together.
    1171             : 
    1172             :    The result is not necessarily the amount of memory used by the tile
    1173             :    process, although it will be quite close.  Tiles could potentially
    1174             :    allocate memory (eg, with brk) without needing to lock it, which
    1175             :    would not need to included, and some kernel memory that tiles cause
    1176             :    to be allocated (for example XSK buffers) is also not included.  The
    1177             :    actual amount of memory used will not be less than this value. */
    1178             : FD_FN_PURE ulong
    1179             : fd_topo_mlock_max_tile( fd_topo_t const * topo );
    1180             : 
    1181             : /* Same as fd_topo_mlock_max_tile, but for loading the entire topology
    1182             :    into one process, rather than a separate process per tile.  This is
    1183             :    used, for example, by the configuration code when it creates all the
    1184             :    workspaces, or the monitor that maps the entire system into one
    1185             :    address space. */
    1186             : FD_FN_PURE ulong
    1187             : fd_topo_mlock( fd_topo_t const * topo );
    1188             : 
    1189             : /* This returns the number of gigantic pages needed by the topology on
    1190             :    the provided numa node.  It includes pages needed by the workspaces,
    1191             :    as well as additional allocations like huge pages for process stacks
    1192             :    and private key storage. */
    1193             : 
    1194             : FD_FN_PURE ulong
    1195             : fd_topo_gigantic_page_cnt( fd_topo_t const * topo,
    1196             :                            ulong             numa_idx );
    1197             : 
    1198             : /* This returns the number of huge pages in the application needed by
    1199             :    the topology on the provided numa node.  It includes pages needed by
    1200             :    things placed in the hugetlbfs (workspaces, process stacks).  If
    1201             :    include_anonymous is true, it also includes anonymous hugepages which
    1202             :    are needed but are not placed in the hugetlbfs. */
    1203             : 
    1204             : FD_FN_PURE ulong
    1205             : fd_topo_huge_page_cnt( fd_topo_t const * topo,
    1206             :                        ulong             numa_idx,
    1207             :                        int               include_anonymous );
    1208             : 
    1209             : /* Returns the number of normal (4 KiB) pages needed by the topology
    1210             :    for extra allocations like private key storage and XSK rings. */
    1211             : 
    1212             : FD_FN_PURE ulong
    1213             : fd_topo_normal_page_cnt( fd_topo_t const * topo );
    1214             : 
    1215             : /* Prints a message describing the topology to an output stream.  If
    1216             :    stdout is true, will be written to stdout, otherwise will be written
    1217             :    as a NOTICE log message to the log file. */
    1218             : void
    1219             : fd_topo_print_log( int         stdout,
    1220             :                    fd_topo_t * topo );
    1221             : 
    1222             : FD_PROTOTYPES_END
    1223             : 
    1224             : #endif /* HEADER_fd_src_disco_topo_fd_topo_h */

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