1 // SPDX-License-Identifier: GPL-2.0-only 2 // Copyright 2013 Cisco Systems, Inc. All rights reserved. 3 4 #include <linux/netdevice.h> 5 #include <linux/spinlock.h> 6 7 #include "vnic_dev.h" 8 #include "vnic_devcmd.h" 9 10 #include "enic_res.h" 11 #include "enic.h" 12 #include "enic_api.h" 13 14 int enic_api_devcmd_proxy_by_index(struct net_device *netdev, int vf, 15 enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait) 16 { 17 int err; 18 struct enic *enic = netdev_priv(netdev); 19 struct vnic_dev *vdev = enic->vdev; 20 21 spin_lock(&enic->enic_api_lock); 22 while (enic->enic_api_busy) { 23 spin_unlock(&enic->enic_api_lock); 24 cpu_relax(); 25 spin_lock(&enic->enic_api_lock); 26 } 27 28 spin_lock_bh(&enic->devcmd_lock); 29 30 vnic_dev_cmd_proxy_by_index_start(vdev, vf); 31 err = vnic_dev_cmd(vdev, cmd, a0, a1, wait); 32 vnic_dev_cmd_proxy_end(vdev); 33 34 spin_unlock_bh(&enic->devcmd_lock); 35 spin_unlock(&enic->enic_api_lock); 36 37 return err; 38 } 39 EXPORT_SYMBOL(enic_api_devcmd_proxy_by_index); 40