Line data    Source code

       1             : #include "fd_quic_conn.h"
       2             : #include "fd_quic_common.h"
       3             : #include "fd_quic_enum.h"
       4             : #include "fd_quic_pkt_meta.h"
       5             : 
       6             : /* define a map for stream_id -> stream* */
       7             : #define MAP_NAME              fd_quic_stream_map
       8       19200 : #define MAP_KEY               stream_id
       9         390 : #define MAP_T                 fd_quic_stream_map_t
      10       19200 : #define MAP_KEY_NULL          FD_QUIC_STREAM_ID_UNUSED
      11             : #define MAP_KEY_INVAL(key)    ((key)==MAP_KEY_NULL)
      12             : #define MAP_QUERY_OPT         1
      13             : 
      14             : #include "../../util/tmpl/fd_map_dynamic.c"
      15             : 
      16             : struct fd_quic_conn_layout {
      17             :   int   stream_map_lg;
      18             :   ulong stream_map_off;
      19             :   ulong pkt_meta_off;
      20             : };
      21             : typedef struct fd_quic_conn_layout fd_quic_conn_layout_t;
      22             : 
      23             : /* TODO maybe introduce a separate parameter for size of pkt_meta
      24             :    pool? */
      25             : ulong
      26       10938 : fd_quic_conn_align( void ) {
      27       10938 :   ulong align = fd_ulong_max( alignof( fd_quic_conn_t ), alignof( fd_quic_stream_t ) );
      28       10938 :   align = fd_ulong_max( align, alignof( fd_quic_pkt_meta_t ) );
      29       10938 :   align = fd_ulong_max( align, fd_quic_stream_map_align() );
      30       10938 :   return align;
      31       10938 : }
      32             : 
      33             : static ulong
      34             : fd_quic_conn_footprint_ext( fd_quic_limits_t const * limits,
      35      327324 :                             fd_quic_conn_layout_t *  layout ) {
      36             : 
      37      327324 :   ulong inflight_pkt_cnt = limits->inflight_pkt_cnt;
      38      327324 :   if( FD_UNLIKELY( inflight_pkt_cnt==0UL ) ) return 0UL;
      39             : 
      40      327324 :   ulong stream_id_cnt = limits->stream_id_cnt;
      41             : 
      42      327324 :   ulong off  = 0;
      43             : 
      44      327324 :   off += sizeof( fd_quic_conn_t );
      45             : 
      46      327324 :   if( stream_id_cnt ) {
      47             :     /* allocate space for stream hash map */
      48             :     /* about a million seems like a decent bound, with expected values up to 20,000 */
      49         312 :     ulong lg = 0;
      50        2034 :     while( lg < 20 && (1ul<<lg) < (ulong)((double)stream_id_cnt*FD_QUIC_DEFAULT_SPARSITY) ) {
      51        1722 :       lg++;
      52        1722 :     }
      53         312 :     layout->stream_map_lg = (int)lg;
      54             : 
      55         312 :     off                     = fd_ulong_align_up( off, fd_quic_stream_align() );
      56         312 :     layout->stream_map_off  = off;
      57         312 :     off                    += fd_quic_stream_map_footprint( (int)lg );
      58      327012 :   } else {
      59      327012 :     layout->stream_map_lg  = 0;
      60      327012 :     layout->stream_map_off = 0UL;
      61      327012 :   }
      62             : 
      63             :   /* allocate space for packet metadata */
      64      327324 :   off                   = fd_ulong_align_up( off, alignof(fd_quic_pkt_meta_t) );
      65      327324 :   layout->pkt_meta_off  = off;
      66      327324 :   off                  += inflight_pkt_cnt * sizeof(fd_quic_pkt_meta_t);
      67             : 
      68      327324 :   return off;
      69      327324 : }
      70             : 
      71             : ulong
      72       10938 : fd_quic_conn_footprint( fd_quic_limits_t const * limits ) {
      73       10938 :   fd_quic_conn_layout_t layout;
      74       10938 :   return fd_quic_conn_footprint_ext( limits, &layout );
      75       10938 : }
      76             : 
      77             : fd_quic_conn_t *
      78             : fd_quic_conn_new( void *                   mem,
      79             :                   fd_quic_t *              quic,
      80      316386 :                   fd_quic_limits_t const * limits ) {
      81             : 
      82             :   /* Argument checks */
      83             : 
      84      316386 :   if( FD_UNLIKELY( !mem ) ) {
      85           0 :     FD_LOG_WARNING(( "NULL mem" ));
      86           0 :     return NULL;
      87           0 :   }
      88             : 
      89      316386 :   ulong align = fd_quic_conn_align();
      90      316386 :   if( FD_UNLIKELY( !fd_ulong_is_aligned( (ulong)mem, align ) ) ) {
      91           0 :     FD_LOG_WARNING(( "misaligned mem" ));
      92           0 :     return NULL;
      93           0 :   }
      94             : 
      95      316386 :   if( FD_UNLIKELY( !quic ) ) {
      96           0 :     FD_LOG_WARNING(( "NULL quic" ));
      97           0 :     return NULL;
      98           0 :   }
      99             : 
     100      316386 :   if( FD_UNLIKELY( !limits ) ) {
     101           0 :     FD_LOG_WARNING(( "NULL limits" ));
     102           0 :     return NULL;
     103           0 :   }
     104             : 
     105      316386 :   fd_quic_conn_layout_t layout = {0};
     106      316386 :   ulong footprint = fd_quic_conn_footprint_ext( limits, &layout );
     107      316386 :   if( FD_UNLIKELY( !footprint ) ) {
     108           0 :     FD_LOG_WARNING(( "invalid footprint for limits" ));
     109           0 :     return NULL;
     110           0 :   }
     111             : 
     112             :   /* Initialize conn */
     113             : 
     114      316386 :   fd_quic_conn_t * conn = (fd_quic_conn_t *)mem;
     115      316386 :   fd_memset( conn, 0, sizeof(fd_quic_conn_t) );
     116             : 
     117      316386 :   conn->quic  = quic;
     118      316386 :   conn->state = FD_QUIC_CONN_STATE_INVALID;
     119             : 
     120             :   /* Initialize streams */
     121             : 
     122      316386 :   FD_QUIC_STREAM_LIST_SENTINEL( conn->send_streams );
     123      316386 :   FD_QUIC_STREAM_LIST_SENTINEL( conn->used_streams );
     124             : 
     125             :   /* Initialize stream hash map */
     126             : 
     127      316386 :   if( layout.stream_map_off ) {
     128         195 :     ulong stream_map_laddr = (ulong)mem + layout.stream_map_off;
     129         195 :     conn->stream_map = fd_quic_stream_map_join( fd_quic_stream_map_new( (void *)stream_map_laddr, layout.stream_map_lg ) );
     130         195 :     if( FD_UNLIKELY( !conn->stream_map ) ) return NULL;
     131         195 :   }
     132             : 
     133             :   /* Initialize packet meta pool */
     134             : 
     135      316386 :   ulong                pkt_meta_cnt = limits->inflight_pkt_cnt;
     136      316386 :   fd_quic_pkt_meta_t * pkt_meta     = (fd_quic_pkt_meta_t *)( (ulong)mem + layout.pkt_meta_off );
     137      316386 :   fd_memset( pkt_meta, 0, pkt_meta_cnt*sizeof(fd_quic_pkt_meta_t) );
     138             : 
     139             :   /* store pointer to storage and size */
     140      316386 :   conn->pkt_meta_mem = pkt_meta;
     141             : 
     142      316386 :   return conn;
     143      316386 : }
     144             : 
     145             : /* set the user-defined context value on the connection */
     146             : void
     147       18003 : fd_quic_conn_set_context( fd_quic_conn_t * conn, void * context ) {
     148       18003 :   conn->context = context;
     149       18003 : }
     150             : 
     151             : 
     152             : /* get the user-defined context value from a connection */
     153             : void *
     154           3 : fd_quic_conn_get_context( fd_quic_conn_t * conn ) {
     155           3 :   return conn->context;
     156           3 : }
     157             : 
     158             : char const *
     159           0 : fd_quic_conn_reason_name( uint reason ) {
     160             :   /* define mapping from reason code to name as a c-string */
     161           0 :   static char const * fd_quic_conn_reason_names[] = {
     162           0 : #   define COMMA ,
     163           0 : #   define _(NAME,CODE,DESC) \
     164           0 :     [CODE] = #NAME
     165           0 :     FD_QUIC_REASON_CODES(_,COMMA)
     166           0 : #   undef _
     167           0 : #   undef COMMA
     168           0 :   };
     169             : 
     170           0 : # define ELEMENTS ( sizeof(fd_quic_conn_reason_names) / sizeof(fd_quic_conn_reason_names[0]) )
     171             : 
     172           0 :   if( FD_UNLIKELY( reason >= ELEMENTS ) ) return "N/A";
     173             : 
     174           0 :   char const * name = fd_quic_conn_reason_names[reason];
     175             : 
     176           0 :   return name ? name : "N/A";
     177           0 : }