From 14ec4ac0d2c8de24dc5f57d85035c15c984408a0 Mon Sep 17 00:00:00 2001
From: Wenda Ni <wenni@microsoft.com>
Date: Tue, 5 Mar 2019 22:06:00 +0000
Subject: [PATCH] Add hook to allow customizing link cable lengths

Signed-off-by: Wenda Ni <wenni@microsoft.com>
---
 files/build_templates/buffers_config.j2 | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/files/build_templates/buffers_config.j2 b/files/build_templates/buffers_config.j2
index 9a26a8b1492c..4ee777a352e2 100644
--- a/files/build_templates/buffers_config.j2
+++ b/files/build_templates/buffers_config.j2
@@ -29,12 +29,16 @@ def
 {# Port configuration to cable length look-up table #}
 {# Each record describes mapping of DUT (DUT port) role and neighbor role to cable length #}
 {# Roles described in the minigraph #}
-{%- set ports2cable = {
-        'torrouter_server'       : '5m',
-        'leafrouter_torrouter'   : '40m',
-        'spinerouter_leafrouter' : '300m'
-        }
--%}
+{%- if defs.ports2cable is defined %}
+    {%- set ports2cable = defs.ports2cable %}
+{%- else %}
+    {%- set ports2cable = {
+            'torrouter_server'       : '5m',
+            'leafrouter_torrouter'   : '40m',
+            'spinerouter_leafrouter' : '300m'
+            }
+    -%}
+{%- endif %}
 
 {%- macro cable_length(port_name) %}
     {%- set cable_len = [] %}