From 147f655a69cd9526cd23f51ab18027cb5abc95b2 Mon Sep 17 00:00:00 2001
From: Christian Poessinger <christian@poessinger.com>
Date: Sun, 29 Aug 2021 23:18:06 +0200
Subject: vyos.ethtool: T3163: add check_speed_duplex() method
Add a new method which supports checking if the desired speed and duplex
setting is actually supported by the underlaying network interface card.
>>> from vyos.ethtool import Ethtool
>>> tmp = Ethtool('eth0')
>>> tmp.check_speed_duplex('100', 'full')
False
>>> tmp.check_speed_duplex('1000', 'full')
True
---
python/vyos/ethtool.py | 45 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 45 insertions(+)
(limited to 'python')
diff --git a/python/vyos/ethtool.py b/python/vyos/ethtool.py
index 25a116d09..8add1a327 100644
--- a/python/vyos/ethtool.py
+++ b/python/vyos/ethtool.py
@@ -13,6 +13,7 @@
# You should have received a copy of the GNU Lesser General Public
# License along with this library. If not, see <http://www.gnu.org/licenses/>.
+import re
from vyos.util import popen
class Ethtool:
@@ -32,9 +33,37 @@ class Ethtool:
# 'tx-esp-segmentation': {'fixed': True, 'enabled': False},
# }
_features = { }
+ # dictionary containing available interface speed and duplex settings
+ # {
+ # '10' : {'full': '', 'half': ''},
+ # '100' : {'full': '', 'half': ''},
+ # '1000': {'full': ''}
+ # }
+ _speed_duplex = { }
_ring_buffers = { }
def __init__(self, ifname):
+ # Build a dictinary of supported link-speed and dupley settings.
+ out, err = popen(f'ethtool {ifname}')
+ reading = False
+ pattern = re.compile(r'\d+base.*')
+ for line in out.splitlines()[1:]:
+ line = line.lstrip()
+ if 'Supported link modes:' in line:
+ reading = True
+ if 'Supported pause frame use:' in line:
+ reading = False
+ break
+ if reading:
+ for block in line.split():
+ if pattern.search(block):
+ speed = block.split('base')[0]
+ duplex = block.split('/')[-1].lower()
+ if speed not in self._speed_duplex:
+ self._speed_duplex.update({ speed : {}})
+ if duplex not in self._speed_duplex[speed]:
+ self._speed_duplex[speed].update({ duplex : ''})
+
# Now populate features dictionaty
out, err = popen(f'ethtool -k {ifname}')
# skip the first line, it only says: "Features for eth0":
@@ -108,3 +137,19 @@ class Ethtool:
# Configuration of TX ring-buffers is not supported on every device,
# thus when it's impossible return None
return self._ring_buffers.get('tx', None)
+
+ def check_speed_duplex(self, speed, duplex):
+ """ Check if the passed speed and duplex combination is supported by
+ the underlaying network adapter. """
+ if isinstance(speed, int):
+ speed = str(speed)
+ if not speed.isdigit():
+ raise ValueError(f'Value "{speed}" for speed is invalid!')
+ if duplex not in ['full', 'half']:
+ raise ValueError(f'Value "{duplex}" for duplex is invalid!')
+
+ if speed in self._speed_duplex:
+ if duplex in self._speed_duplex[speed]:
+ return True
+ return False
+
--
cgit v1.2.3