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-rwxr-xr-xsrc/conf_mode/interfaces-ethernet.py18
1 files changed, 17 insertions, 1 deletions
diff --git a/src/conf_mode/interfaces-ethernet.py b/src/conf_mode/interfaces-ethernet.py
index bf4650773..e82a3e0f1 100755
--- a/src/conf_mode/interfaces-ethernet.py
+++ b/src/conf_mode/interfaces-ethernet.py
@@ -30,6 +30,7 @@ from vyos.configverify import verify_mtu
from vyos.configverify import verify_mtu_ipv6
from vyos.configverify import verify_vlan_config
from vyos.configverify import verify_vrf
+from vyos.ethtool import Ethtool
from vyos.ifconfig import EthernetIf
from vyos.template import render
from vyos.util import call
@@ -82,11 +83,26 @@ def verify(ethernet):
driver = EthernetIf(ifname).get_driver_name()
# T3342 - Xen driver requires special treatment
- if driver == "vif":
+ if driver == 'vif':
if int(ethernet['mtu']) > 1500 and dict_search('offload.sg', ethernet) == None:
raise ConfigError('Xen netback drivers requires scatter-gatter offloading '\
'for MTU size larger then 1500 bytes')
+ ethtool = Ethtool(ifname)
+ if 'ring_buffer' in ethernet:
+ max_rx = ethtool.get_rx_buffer()
+ max_tx = ethtool.get_tx_buffer()
+
+ rx = dict_search('ring_buffer.rx', ethernet)
+ if rx and int(rx) > int(max_rx):
+ raise ConfigError(f'Driver only supports a maximum RX ring-buffer '\
+ f'size of "{max_rx}" bytes!')
+
+ tx = dict_search('ring_buffer.tx', ethernet)
+ if tx and int(tx) > int(max_tx):
+ raise ConfigError(f'Driver only supports a maximum TX ring-buffer '\
+ f'size of "{max_tx}" bytes!')
+
# XDP requires multiple TX queues
if 'xdp' in ethernet:
queues = glob(f'/sys/class/net/{ifname}/queues/tx-*')