diff options
Diffstat (limited to 'cmake/config/lib.cmake')
| -rw-r--r-- | cmake/config/lib.cmake | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/cmake/config/lib.cmake b/cmake/config/lib.cmake index 2c01b311..81a7d6ba 100644 --- a/cmake/config/lib.cmake +++ b/cmake/config/lib.cmake @@ -97,6 +97,8 @@ set(KEY_REKEY_WATERMARK 4 CACHE STRING "Re-key when this many node keys remain; 0 disables the count trigger") set(KEY_REPLAY_WINDOW 2048 CACHE STRING "RX replay window in packets; power of two, >= 128") +set(KEY_REKEY_WM_CHECK_BITS 16 CACHE STRING + "Re-key watermark is consulted once per 2^n flow writes") if(NOT KEY_REPLAY_WINDOW MATCHES "^[0-9]+$") message(FATAL_ERROR "KEY_REPLAY_WINDOW must be a positive integer") endif() @@ -111,7 +113,7 @@ endif() # that leaves a high-rate flow no room to complete the exchange. Production # defaults are vast; this guards under-sized (test) geometries. if(KEY_REKEY_WATERMARK GREATER 0) - set(_rk_wm_check 65536) # FLOW_WM_CHECK in src/lib/dev.c (2^16) + math(EXPR _rk_wm_check "1 << ${KEY_REKEY_WM_CHECK_BITS}") math(EXPR _rk_lead "${KEY_REKEY_WATERMARK} << (${KEY_LEAF_BITS} + ${KEY_NODE_BITS})") math(EXPR _rk_min "2 * ${_rk_wm_check}") |