fpga: e31x: Cleanup MTU parameters

Original-commit: 55a1ef7e50d271459f44b98d55860bfb2bbe2d19
2022-09-01 14:41:55 -05:00
parent 919acb248f
commit 2f677eddda
2 changed files with 7 additions and 0 deletions
@@ -152,6 +152,9 @@ module e31x (
    CHDR_W_must_be_64_for_this_USRP();
  end

+  // Log base 2 of the maximum transmission unit (MTU) in bytes
+  localparam BYTE_MTU = $clog2(8192);
+
  // Constants
  localparam REG_AWIDTH = 14; // log2(0x4000)
  localparam REG_DWIDTH = 32;
@@ -421,6 +424,7 @@ module e31x (
    .DWIDTH(REG_DWIDTH),
    .AWIDTH(REG_AWIDTH),
    .PORTNUM(8'd1),
+    .BYTE_MTU(BYTE_MTU),
    .RFNOC_PROTOVER(RFNOC_PROTOVER),
    .NODE_INST(0)
  ) eth_internal_i (
@@ -866,6 +870,7 @@ module e31x (
    .FP_GPIO_WIDTH(FP_GPIO_WIDTH),
    .DB_GPIO_WIDTH(DB_GPIO_WIDTH),
    .CHDR_W(CHDR_W),
+    .BYTE_MTU(BYTE_MTU),
    .RFNOC_PROTOVER(RFNOC_PROTOVER)
  ) e31x_core_inst (