From 7d3ae5fc3ba113b67281c9605f3a8a71b924efe2 Mon Sep 17 00:00:00 2001
From: Christian Poessinger <christian@poessinger.com>
Date: Sun, 3 Apr 2022 14:11:06 +0200
Subject: isis: T3156: add segment routing local-block for ISIS
---
src/conf_mode/protocols_isis.py | 44 ++++++++++++++++++++++++++---------------
1 file changed, 28 insertions(+), 16 deletions(-)
(limited to 'src')
diff --git a/src/conf_mode/protocols_isis.py b/src/conf_mode/protocols_isis.py
index 9b4b215de..f2501e38a 100755
--- a/src/conf_mode/protocols_isis.py
+++ b/src/conf_mode/protocols_isis.py
@@ -1,6 +1,6 @@
#!/usr/bin/env python3
#
-# Copyright (C) 2020-2021 VyOS maintainers and contributors
+# Copyright (C) 2020-2022 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
@@ -169,28 +169,40 @@ def verify(isis):
# Segment routing checks
if dict_search('segment_routing.global_block', isis):
- high_label_value = dict_search('segment_routing.global_block.high_label_value', isis)
- low_label_value = dict_search('segment_routing.global_block.low_label_value', isis)
+ g_high_label_value = dict_search('segment_routing.global_block.high_label_value', isis)
+ g_low_label_value = dict_search('segment_routing.global_block.low_label_value', isis)
- # If segment routing global block high value is blank, throw error
- if (low_label_value and not high_label_value) or (high_label_value and not low_label_value):
- raise ConfigError('Segment routing global block requires both low and high value!')
+ # If segment routing global block high or low value is blank, throw error
+ if not (g_low_label_value or g_high_label_value):
+ raise ConfigError('Segment routing global-block requires both low and high value!')
# If segment routing global block low value is higher than the high value, throw error
- if int(low_label_value) > int(high_label_value):
- raise ConfigError('Segment routing global block low value must be lower than high value')
+ if int(g_low_label_value) > int(g_high_label_value):
+ raise ConfigError('Segment routing global-block low value must be lower than high value')
if dict_search('segment_routing.local_block', isis):
- high_label_value = dict_search('segment_routing.local_block.high_label_value', isis)
- low_label_value = dict_search('segment_routing.local_block.low_label_value', isis)
+ if dict_search('segment_routing.global_block', isis) == None:
+ raise ConfigError('Segment routing local-block requires global-block to be configured!')
- # If segment routing local block high value is blank, throw error
- if (low_label_value and not high_label_value) or (high_label_value and not low_label_value):
- raise ConfigError('Segment routing local block requires both high and low value!')
+ l_high_label_value = dict_search('segment_routing.local_block.high_label_value', isis)
+ l_low_label_value = dict_search('segment_routing.local_block.low_label_value', isis)
- # If segment routing local block low value is higher than the high value, throw error
- if int(low_label_value) > int(high_label_value):
- raise ConfigError('Segment routing local block low value must be lower than high value')
+ # If segment routing local-block high or low value is blank, throw error
+ if not (l_low_label_value or l_high_label_value):
+ raise ConfigError('Segment routing local-block requires both high and low value!')
+
+ # If segment routing local-block low value is higher than the high value, throw error
+ if int(l_low_label_value) > int(l_high_label_value):
+ raise ConfigError('Segment routing local-block low value must be lower than high value')
+
+ # local-block most live outside global block
+ global_range = range(int(g_low_label_value), int(g_high_label_value) +1)
+ local_range = range(int(l_low_label_value), int(l_high_label_value) +1)
+
+ # Check for overlapping ranges
+ if list(set(global_range) & set(local_range)):
+ raise ConfigError(f'Segment-Routing Global Block ({g_low_label_value}/{g_high_label_value}) '\
+ f'conflicts with Local Block ({l_low_label_value}/{l_high_label_value})!')
return None
--
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