LCOV - code coverage report
Current view: top level - waltz/quic - fd_quic_conn.c (source / functions) Hit Total Coverage
Test: cov.lcov Lines: 63 92 68.5 %
Date: 2025-07-01 05:00:49 Functions: 6 7 85.7 %

          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             : #include "fd_quic_private.h"
       6             : 
       7             : /* define a map for stream_id -> stream* */
       8             : #define MAP_NAME              fd_quic_stream_map
       9       28032 : #define MAP_KEY               stream_id
      10         942 : #define MAP_T                 fd_quic_stream_map_t
      11       28032 : #define MAP_KEY_NULL          FD_QUIC_STREAM_ID_UNUSED
      12             : #define MAP_KEY_INVAL(key)    ((key)==MAP_KEY_NULL)
      13             : #define MAP_QUERY_OPT         1
      14             : 
      15             : #include "../../util/tmpl/fd_map_dynamic.c"
      16             : 
      17             : struct fd_quic_conn_layout {
      18             :   int   stream_map_lg;
      19             :   ulong stream_map_off;
      20             : };
      21             : typedef struct fd_quic_conn_layout fd_quic_conn_layout_t;
      22             : 
      23             : ulong
      24      655362 : fd_quic_conn_align( void ) {
      25      655362 :   ulong align = fd_ulong_max( alignof( fd_quic_conn_t ), alignof( fd_quic_stream_t ) );
      26      655362 :   align = fd_ulong_max( align, fd_quic_stream_map_align() );
      27      655362 :   return align;
      28      655362 : }
      29             : 
      30             : static ulong
      31             : fd_quic_conn_footprint_ext( fd_quic_limits_t const * limits,
      32      327681 :                             fd_quic_conn_layout_t *  layout ) {
      33             : 
      34      327681 :   ulong stream_id_cnt = limits->stream_id_cnt;
      35             : 
      36      327681 :   ulong off  = 0;
      37             : 
      38      327681 :   off += sizeof( fd_quic_conn_t );
      39             : 
      40      327681 :   if( stream_id_cnt ) {
      41             :     /* allocate space for stream hash map */
      42             :     /* about a million seems like a decent bound, with expected values up to 20,000 */
      43         675 :     ulong lg = 0;
      44        4212 :     while( lg < 20 && (1ul<<lg) < (ulong)((double)stream_id_cnt*FD_QUIC_DEFAULT_SPARSITY) ) {
      45        3537 :       lg++;
      46        3537 :     }
      47         675 :     layout->stream_map_lg = (int)lg;
      48             : 
      49         675 :     off                     = fd_ulong_align_up( off, fd_quic_stream_align() );
      50         675 :     layout->stream_map_off  = off;
      51         675 :     off                    += fd_quic_stream_map_footprint( (int)lg );
      52      327006 :   } else {
      53      327006 :     layout->stream_map_lg  = 0;
      54      327006 :     layout->stream_map_off = 0UL;
      55      327006 :   }
      56             : 
      57      327681 :   return fd_ulong_align_up( off, fd_quic_conn_align() );
      58      327681 : }
      59             : 
      60             : ulong
      61       11019 : fd_quic_conn_footprint( fd_quic_limits_t const * limits ) {
      62       11019 :   fd_quic_conn_layout_t layout;
      63       11019 :   return fd_quic_conn_footprint_ext( limits, &layout );
      64       11019 : }
      65             : 
      66             : fd_quic_conn_t *
      67             : fd_quic_conn_new( void *                   mem,
      68             :                   fd_quic_t *              quic,
      69      316662 :                   fd_quic_limits_t const * limits ) {
      70             : 
      71             :   /* Argument checks */
      72             : 
      73      316662 :   if( FD_UNLIKELY( !mem ) ) {
      74           0 :     FD_LOG_WARNING(( "NULL mem" ));
      75           0 :     return NULL;
      76           0 :   }
      77             : 
      78      316662 :   ulong align = fd_quic_conn_align();
      79      316662 :   if( FD_UNLIKELY( !fd_ulong_is_aligned( (ulong)mem, align ) ) ) {
      80           0 :     FD_LOG_WARNING(( "misaligned mem" ));
      81           0 :     return NULL;
      82           0 :   }
      83             : 
      84      316662 :   if( FD_UNLIKELY( !quic ) ) {
      85           0 :     FD_LOG_WARNING(( "NULL quic" ));
      86           0 :     return NULL;
      87           0 :   }
      88             : 
      89      316662 :   if( FD_UNLIKELY( !limits ) ) {
      90           0 :     FD_LOG_WARNING(( "NULL limits" ));
      91           0 :     return NULL;
      92           0 :   }
      93             : 
      94      316662 :   fd_quic_conn_layout_t layout = {0};
      95      316662 :   ulong footprint = fd_quic_conn_footprint_ext( limits, &layout );
      96      316662 :   if( FD_UNLIKELY( !footprint ) ) {
      97           0 :     FD_LOG_WARNING(( "invalid footprint for limits" ));
      98           0 :     return NULL;
      99           0 :   }
     100             : 
     101             :   /* Initialize conn */
     102             : 
     103      316662 :   fd_quic_conn_t * conn = (fd_quic_conn_t *)mem;
     104      316662 :   fd_memset( conn, 0, sizeof(fd_quic_conn_t) );
     105             : 
     106      316662 :   conn->quic  = quic;
     107      316662 :   fd_quic_set_conn_state( conn, FD_QUIC_CONN_STATE_INVALID );
     108             : 
     109             :   /* Initialize streams */
     110             : 
     111      316662 :   FD_QUIC_STREAM_LIST_SENTINEL( conn->send_streams );
     112      316662 :   FD_QUIC_STREAM_LIST_SENTINEL( conn->used_streams );
     113             : 
     114             :   /* Initialize stream hash map */
     115             : 
     116      316662 :   if( layout.stream_map_off ) {
     117         471 :     ulong stream_map_laddr = (ulong)mem + layout.stream_map_off;
     118         471 :     conn->stream_map = fd_quic_stream_map_join( fd_quic_stream_map_new( (void *)stream_map_laddr, layout.stream_map_lg ) );
     119         471 :     if( FD_UNLIKELY( !conn->stream_map ) ) return NULL;
     120         471 :   }
     121             : 
     122             :   /* Initialize packet meta tracker */
     123      316662 :   fd_quic_state_t * state = fd_quic_get_state( quic );
     124      316662 :   fd_quic_pkt_meta_tracker_init( &conn->pkt_meta_tracker,
     125      316662 :                                 quic->limits.inflight_frame_cnt,
     126      316662 :                                 state->pkt_meta_pool );
     127             : 
     128             : 
     129      316662 :   return conn;
     130      316662 : }
     131             : 
     132             : /* set the user-defined context value on the connection */
     133             : void
     134       18003 : fd_quic_conn_set_context( fd_quic_conn_t * conn, void * context ) {
     135       18003 :   conn->context = context;
     136       18003 : }
     137             : 
     138             : 
     139             : /* get the user-defined context value from a connection */
     140             : void *
     141           3 : fd_quic_conn_get_context( fd_quic_conn_t * conn ) {
     142           3 :   return conn->context;
     143           3 : }
     144             : 
     145             : char const *
     146           0 : fd_quic_conn_reason_name( uint reason ) {
     147             :   /* define mapping from reason code to name as a c-string */
     148           0 :   static char const * fd_quic_conn_reason_names[] = {
     149           0 : #   define COMMA ,
     150           0 : #   define _(NAME,CODE,DESC) \
     151           0 :     [CODE] = #NAME
     152           0 :     FD_QUIC_REASON_CODES(_,COMMA)
     153           0 : #   undef _
     154           0 : #   undef COMMA
     155           0 :   };
     156             : 
     157           0 : # define ELEMENTS ( sizeof(fd_quic_conn_reason_names) / sizeof(fd_quic_conn_reason_names[0]) )
     158             : 
     159           0 :   if( FD_UNLIKELY( reason >= ELEMENTS ) ) return "N/A";
     160             : 
     161           0 :   char const * name = fd_quic_conn_reason_names[reason];
     162             : 
     163           0 :   return name ? name : "N/A";
     164           0 : }

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