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-rwxr-xr-xsrc/conf_mode/interfaces-ethernet.py9
1 files changed, 8 insertions, 1 deletions
diff --git a/src/conf_mode/interfaces-ethernet.py b/src/conf_mode/interfaces-ethernet.py
index e7f0cd6a5..bf4650773 100755
--- a/src/conf_mode/interfaces-ethernet.py
+++ b/src/conf_mode/interfaces-ethernet.py
@@ -76,10 +76,17 @@ def verify(ethernet):
verify_mirror(ethernet)
# verify offloading capabilities
- if 'offload' in ethernet and 'rps' in ethernet['offload']:
+ if dict_search('offload.rps', ethernet) != None:
if not os.path.exists(f'/sys/class/net/{ifname}/queues/rx-0/rps_cpus'):
raise ConfigError('Interface does not suport RPS!')
+ driver = EthernetIf(ifname).get_driver_name()
+ # T3342 - Xen driver requires special treatment
+ 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')
+
# XDP requires multiple TX queues
if 'xdp' in ethernet:
queues = glob(f'/sys/class/net/{ifname}/queues/tx-*')