From: Victor Nogueira <victor@mojatatu.com>
Date: Thu, 21 May 2026 15:08:10 +0000 (-0300)
Subject: selftests/tc-testing: Add support for ifb devices
X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=4177fd4469824b7cb58ef197ede868f9228f4fa7;p=thirdparty%2Fkernel%2Flinux.git

selftests/tc-testing: Add support for ifb devices

Add support for ifb devices in tdc so that tests with the nsPlugin are
able to use it when necessary.

Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Victor Nogueira <victor@mojatatu.com>
Link: https://patch.msgid.link/20260521150811.1896373-1-victor@mojatatu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---

diff --git a/tools/testing/selftests/tc-testing/config b/tools/testing/selftests/tc-testing/config
index c20aa16b1d633..0e5618be03359 100644
--- a/tools/testing/selftests/tc-testing/config
+++ b/tools/testing/selftests/tc-testing/config
@@ -4,6 +4,7 @@
 
 CONFIG_DUMMY=y
 CONFIG_VETH=y
+CONFIG_IFB=y
 
 #
 # Core Netfilter Configuration
diff --git a/tools/testing/selftests/tc-testing/plugin-lib/nsPlugin.py b/tools/testing/selftests/tc-testing/plugin-lib/nsPlugin.py
index bb19b8b76d3bc..0bece7c74f07c 100644
--- a/tools/testing/selftests/tc-testing/plugin-lib/nsPlugin.py
+++ b/tools/testing/selftests/tc-testing/plugin-lib/nsPlugin.py
@@ -120,6 +120,7 @@ class SubPlugin(TdcPlugin):
         dev0 = self.args.NAMES["DEV0"];
         dev1 = self.args.NAMES["DEV1"];
         dummy = self.args.NAMES["DUMMY"];
+        ifb = self.args.NAMES['IFB']
 
         if self.args.verbose:
             print('{}._nl_ns_create'.format(self.sub_class))
@@ -129,6 +130,7 @@ class SubPlugin(TdcPlugin):
         with IPRoute() as ip:
             ip.link('add', ifname=dev1, kind='veth', peer={'ifname': dev0, 'net_ns_fd':'/proc/1/ns/net'})
             ip.link('add', ifname=dummy, kind='dummy')
+            ip.link('add', ifname=ifb, kind='ifb')
             ticks = 20
             while True:
                 if ticks == 0:
@@ -136,8 +138,10 @@ class SubPlugin(TdcPlugin):
                 try:
                     dev1_idx = ip.link_lookup(ifname=dev1)[0]
                     dummy_idx = ip.link_lookup(ifname=dummy)[0]
+                    ifb_idx = ip.link_lookup(ifname=ifb)[0]
                     ip.link('set', index=dev1_idx, state='up')
                     ip.link('set', index=dummy_idx, state='up')
+                    ip.link('set', index=ifb_idx, state='up')
                     break
                 except:
                     time.sleep(0.1)
@@ -169,8 +173,11 @@ class SubPlugin(TdcPlugin):
         cmds.append(self._replace_keywords('link set $DEV1 netns {}'.format(ns)))
         cmds.append(self._replace_keywords('link add $DUMMY type dummy'.format(ns)))
         cmds.append(self._replace_keywords('link set $DUMMY netns {}'.format(ns)))
+        cmds.append(self._replace_keywords('link add $IFB type ifb'))
+        cmds.append(self._replace_keywords('link set $IFB netns {}'.format(ns)))
         cmds.append(self._replace_keywords('netns exec {} $IP link set $DEV1 up'.format(ns)))
         cmds.append(self._replace_keywords('netns exec {} $IP link set $DUMMY up'.format(ns)))
+        cmds.append(self._replace_keywords('netns exec {} $IP link set $IFB up'.format(ns)))
         cmds.append(self._replace_keywords('link set $DEV0 up'.format(ns)))
 
         if self.args.device:
diff --git a/tools/testing/selftests/tc-testing/tdc.py b/tools/testing/selftests/tc-testing/tdc.py
index 81b4ac3f050c3..511d66c36a2a0 100755
--- a/tools/testing/selftests/tc-testing/tdc.py
+++ b/tools/testing/selftests/tc-testing/tdc.py
@@ -378,6 +378,7 @@ def run_one_test(pm, args, index, tidx):
     dev0 = NAMES['DEV0']
     dev1 = NAMES['DEV1']
     dummy = NAMES['DUMMY']
+    ifb = NAMES['IFB']
     result = True
     tresult = ""
     tap = ""
@@ -414,6 +415,7 @@ def run_one_test(pm, args, index, tidx):
     NAMES['DEV0'] = '{}id{}'.format(NAMES['DEV0'], tidx['id'])
     NAMES['DEV1'] = '{}id{}'.format(NAMES['DEV1'], tidx['id'])
     NAMES['DUMMY'] = '{}id{}'.format(NAMES['DUMMY'], tidx['id'])
+    NAMES['IFB'] = '{}id{}'.format(NAMES['IFB'], tidx['id'])
 
     pm.call_pre_case(tidx)
     prepare_env(tidx, args, pm, 'setup', "-----> prepare stage", tidx["setup"])
@@ -474,6 +476,7 @@ def run_one_test(pm, args, index, tidx):
     NAMES['DEV0'] = dev0
     NAMES['DEV1'] = dev1
     NAMES['DUMMY'] = dummy
+    NAMES['IFB'] = ifb
 
     return res
 
diff --git a/tools/testing/selftests/tc-testing/tdc_config.py b/tools/testing/selftests/tc-testing/tdc_config.py
index 9488b03cbc2c8..cd0bd42f05a54 100644
--- a/tools/testing/selftests/tc-testing/tdc_config.py
+++ b/tools/testing/selftests/tc-testing/tdc_config.py
@@ -17,6 +17,7 @@ NAMES = {
           'DEV1': 'v0p1',
           'DEV2': '',
           'DUMMY': 'dummy1',
+          'IFB': 'ifbtdc0',
           'ETHTOOL': '/usr/sbin/ethtool',
 	  'ETH': 'eth0',
           'BATCH_FILE': './batch.txt',