Commit 434e657f authored by shaojijie's avatar shaojijie Committed by Jiantao Xiao
Browse files

net: hns3: add support configuring function-level interrupt affinity 

driver inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I97T47


CVE: NA

----------------------------------------------------------------------

The patch provides a customized interface for configuring the interrupt
affinity of the hns3 network port.

Signed-off-by: default avatarshaojijie <shaojijie@huawei.com>
Signed-off-by: default avatarJiantao Xiao <xiaojiantao1@h-partners.com>
parent 9f02b418

drivers/net/ethernet/hisilicon/hns3/hns3_ext.c

+63 −0
Original line number Diff line number Diff line
@@ -214,3 +214,66 @@ int nic_clean_stats64(struct net_device *ndev, struct rtnl_link_stats64 *stats) 
	return ret;

}

EXPORT_SYMBOL(nic_clean_stats64);



int nic_set_cpu_affinity(struct net_device *ndev, cpumask_t *affinity_mask)

{

	struct hns3_enet_tqp_vector *tqp_vector;

	struct hns3_nic_priv *priv;

	int ret = 0;

	u16 i;



	if (!ndev || !affinity_mask) {

		netdev_err(ndev,

			   "Invalid input param when set ethernet cpu affinity\n");

		return -EINVAL;

	}



	if (nic_netdev_match_check(ndev))

		return -ENODEV;



	priv = netdev_priv(ndev);

	rtnl_lock();

	if (!test_bit(HNS3_NIC_STATE_INITED, &priv->state) ||

	    test_bit(HNS3_NIC_STATE_RESETTING, &priv->state)) {

		ret = -EBUSY;

		goto err_unlock;

	}



	if (test_bit(HNS3_NIC_STATE_DOWN, &priv->state)) {

		netdev_err(ndev,

			   "ethernet is down, not support cpu affinity set\n");

		ret = -ENETDOWN;

		goto err_unlock;

	}



	for (i = 0; i < priv->vector_num; i++) {

		tqp_vector = &priv->tqp_vector[i];

		if (tqp_vector->irq_init_flag != HNS3_VECTOR_INITED)

			continue;



		tqp_vector->affinity_mask = *affinity_mask;



		ret = irq_set_affinity_hint(tqp_vector->vector_irq, NULL);

		if (ret) {

			netdev_err(ndev,

				   "failed to reset affinity hint, ret = %d\n", ret);

			goto err_unlock;

		}



		ret = irq_set_affinity_hint(tqp_vector->vector_irq,

					    &tqp_vector->affinity_mask);

		if (ret) {

			netdev_err(ndev,

				   "failed to set affinity hint, ret = %d\n", ret);

			goto err_unlock;

		}

	}



	netdev_info(ndev, "set nic cpu affinity %*pb succeed\n",

		    cpumask_pr_args(affinity_mask));



err_unlock:

	rtnl_unlock();

	return ret;

}

EXPORT_SYMBOL(nic_set_cpu_affinity);

drivers/net/ethernet/hisilicon/hns3/hns3_ext.h

+1 −0
Original line number Diff line number Diff line
@@ -27,4 +27,5 @@ int nic_set_notify_pkt_start(struct net_device *ndev); 
int nic_set_torus_param(struct net_device *ndev, struct hnae3_torus_param *param);

int nic_get_torus_param(struct net_device *ndev, struct hnae3_torus_param *param);

int nic_clean_stats64(struct net_device *ndev, struct rtnl_link_stats64 *stats);

int nic_set_cpu_affinity(struct net_device *ndev, cpumask_t *affinity_mask);

#endif