vyos.ifconfig: T3619: only inform user about real offload change for invalid option

Commit 31169fa8 ("vyos.ifconfig: T3619: only set offloading options if
supported by NIC") added a warning for the user if an offload option was about
to change that was not possible at all (harware limit).

Unfortunately the warning was even displayed if nothing was done at all. This
got corrected.

(cherry picked from commit ce784a9fcb7199f87949f17777b7b736227c85b3)

1 files changed, 25 insertions, 32 deletions

diff --git a/python/vyos/ifconfig/ethernet.py b/python/vyos/ifconfig/ethernet.py
index 80044c13e..cb03a006c 100644
--- a/python/vyos/ifconfig/ethernet.py
+++ b/python/vyos/ifconfig/ethernet.py
@@ -237,12 +237,11 @@ class EthernetIf(Interface):
             raise ValueError('Value out of range')
 
         enabled, fixed = self.ethtool.get_generic_receive_offload()
-        if not fixed:
-            enabled = 'on' if enabled else 'off'
-            if enabled != state:
+        if enabled != state:
+            if not fixed:
                 return self.set_interface('gro', 'on' if state else 'off')
-
-        print('Adapter does not support changing generic-receive-offload settings!')
+            else:
+                print('Adapter does not support changing generic-receive-offload settings!')
         return False
 
     def set_gso(self, state):
@@ -257,12 +256,11 @@ class EthernetIf(Interface):
             raise ValueError('Value out of range')
 
         enabled, fixed = self.ethtool.get_generic_segmentation_offload()
-        if not fixed:
-            enabled = 'on' if enabled else 'off'
-            if enabled != state:
-                return self.set_interface('gro', 'on' if state else 'off')
-
-        print('Adapter does not support changing generic-segmentation-offload settings!')
+        if enabled != state:
+            if not fixed:
+                return self.set_interface('gso', 'on' if state else 'off')
+            else:
+                print('Adapter does not support changing generic-segmentation-offload settings!')
         return False
 
     def set_lro(self, state):
@@ -277,12 +275,11 @@ class EthernetIf(Interface):
             raise ValueError('Value out of range')
 
         enabled, fixed = self.ethtool.get_large_receive_offload()
-        if not fixed:
-            enabled = 'on' if enabled else 'off'
-            if enabled != state:
+        if enabled != state:
+            if not fixed:
                 return self.set_interface('gro', 'on' if state else 'off')
-
-        print('Adapter does not support changing large-receive-offload settings!')
+            else:
+                print('Adapter does not support changing large-receive-offload settings!')
         return False
 
     def set_rps(self, state):
@@ -315,12 +312,11 @@ class EthernetIf(Interface):
             raise ValueError('Value out of range')
 
         enabled, fixed = self.ethtool.get_scatter_gather()
-        if not fixed:
-            enabled = 'on' if enabled else 'off'
-            if enabled != state:
+        if enabled != state:
+            if not fixed:
                 return self.set_interface('gro', 'on' if state else 'off')
-
-        print('Adapter does not support changing scatter-gather settings!')
+            else:
+                print('Adapter does not support changing scatter-gather settings!')
         return False
 
     def set_tso(self, state):
@@ -336,12 +332,11 @@ class EthernetIf(Interface):
             raise ValueError('Value out of range')
 
         enabled, fixed = self.ethtool.get_tcp_segmentation_offload()
-        if not fixed:
-            enabled = 'on' if enabled else 'off'
-            if enabled != state:
+        if enabled != state:
+            if not fixed:
                 return self.set_interface('gro', 'on' if state else 'off')
-
-        print('Adapter does not support changing tcp-segmentation-offload settings!')
+            else:
+                print('Adapter does not support changing tcp-segmentation-offload settings!')
         return False
 
     def set_ufo(self, state):
@@ -357,12 +352,11 @@ class EthernetIf(Interface):
             raise ValueError('Value out of range')
 
         enabled, fixed = self.ethtool.get_udp_fragmentation_offload()
-        if not fixed:
-            enabled = 'on' if enabled else 'off'
-            if enabled != state:
+        if enabled != state:
+            if not fixed:
                 return self.set_interface('gro', 'on' if state else 'off')
-
-        print('Adapter does not support changing udp-fragmentation-offload settings!')
+            else:
+                print('Adapter does not support changing udp-fragmentation-offload settings!')
         return False
 
     def set_ring_buffer(self, b_type, b_size):
@@ -382,7 +376,6 @@ class EthernetIf(Interface):
             print(f'could not set "{b_type}" ring-buffer for {ifname}')
         return output
 
-
     def update(self, config):
         """ General helper function which works on a dictionary retrived by
         get_config_dict(). It's main intention is to consolidate the scattered