From: Davide Caratti <dcaratti@redhat.com>
Date: Thu, 19 Mar 2026 18:40:55 +0000 (+0100)
Subject: netdevsim: support tc-ets offload
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=abdf5133bfa12c45d402f7b73d39bca772f3644a;p=thirdparty%2Flinux.git

netdevsim: support tc-ets offload

Extend netdevsim to accept ndo_setup_tc(TC_SETUP_QDISC_ETS) calls, so that
it's possible to run tdc on ETS offload code path.

Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Link: https://patch.msgid.link/d04086cd0204d4aaf6524e972198faa1a4e5d657.1773945414.git.dcaratti@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---

diff --git a/drivers/net/netdevsim/tc.c b/drivers/net/netdevsim/tc.c
index 8a1960f5f99ed..8f013a5895a2b 100644
--- a/drivers/net/netdevsim/tc.c
+++ b/drivers/net/netdevsim/tc.c
@@ -2,6 +2,7 @@
 
 #include <linux/netdevice.h>
 #include <net/pkt_sched.h>
+#include <net/pkt_cls.h>
 
 #include "netdevsim.h"
 
@@ -36,6 +37,25 @@ static int nsim_setup_tc_taprio(struct net_device *dev,
 	return err;
 }
 
+static int nsim_setup_tc_ets(struct net_device *dev,
+			     struct tc_ets_qopt_offload *offload)
+{
+	int err = 0;
+
+	switch (offload->command) {
+	case TC_ETS_REPLACE:
+	case TC_ETS_DESTROY:
+		break;
+	case TC_ETS_STATS:
+		_bstats_update(offload->stats.bstats, 0, 0);
+		break;
+	default:
+		err = -EOPNOTSUPP;
+	}
+
+	return err;
+}
+
 static LIST_HEAD(nsim_block_cb_list);
 
 int
@@ -46,6 +66,8 @@ nsim_setup_tc(struct net_device *dev, enum tc_setup_type type, void *type_data)
 	switch (type) {
 	case TC_SETUP_QDISC_TAPRIO:
 		return nsim_setup_tc_taprio(dev, type_data);
+	case TC_SETUP_QDISC_ETS:
+		return nsim_setup_tc_ets(dev, type_data);
 	case TC_SETUP_BLOCK:
 		return flow_block_cb_setup_simple(type_data,
 						  &nsim_block_cb_list,