// SPDX-License-Identifier: GPL-2.0 #include <linux/netdevice.h>#include <net/pkt_sched.h>#include <net/pkt_cls.h> #include "netdevsim.h" static intnsim_setup_tc_block_cb(enum tc_setup_type type, void *type_data, void *cb_priv){	struct flow_cls_common_offload *common = type_data;	int err = 0; 	switch (type) {	case TC_SETUP_CLSBPF:		err = nsim_bpf_setup_tc_block_cb(type, type_data, cb_priv);		break;	case TC_SETUP_CLSFLOWER:		break;	default:		NSIM_EA(common->extack, "offload type not supported");		err = -EOPNOTSUPP;		break;	} 	return err;} static void nsim_taprio_stats(struct tc_taprio_qopt_stats *stats){	stats->window_drops = 0;	stats->tx_overruns = 0;} static int nsim_setup_tc_taprio(struct net_device *dev,				struct tc_taprio_qopt_offload *offload){	int err = 0; 	switch (offload->cmd) {	case TAPRIO_CMD_REPLACE:	case TAPRIO_CMD_DESTROY:		break;	case TAPRIO_CMD_STATS:		nsim_taprio_stats(&offload->stats);		break;	default:		err = -EOPNOTSUPP;	} 	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); intnsim_setup_tc(struct net_device *dev, enum tc_setup_type type, void *type_data){	struct netdevsim *ns = netdev_priv(dev); 	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,						  nsim_setup_tc_block_cb,						  ns, ns, true);	case TC_SETUP_FT:		return 0;	default:		return -EOPNOTSUPP;	}}ALLOW_ERROR_INJECTION(nsim_setup_tc, ERRNO);