1 /* 2 * Copyright 2013 Cisco Systems, Inc. All rights reserved. 3 * 4 * This program is free software; you may redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; version 2 of the License. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 9 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 10 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 11 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 12 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 13 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 14 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 15 * SOFTWARE. 16 * 17 */ 18 19 #include <linux/netdevice.h> 20 #include <linux/spinlock.h> 21 22 #include "vnic_dev.h" 23 #include "vnic_devcmd.h" 24 25 #include "enic_res.h" 26 #include "enic.h" 27 #include "enic_api.h" 28 29 int enic_api_devcmd_proxy_by_index(struct net_device *netdev, int vf, 30 enum vnic_devcmd_cmd cmd, u64 *a0, u64 *a1, int wait) 31 { 32 int err; 33 struct enic *enic = netdev_priv(netdev); 34 struct vnic_dev *vdev = enic->vdev; 35 36 spin_lock(&enic->enic_api_lock); 37 while (enic->enic_api_busy) { 38 spin_unlock(&enic->enic_api_lock); 39 cpu_relax(); 40 spin_lock(&enic->enic_api_lock); 41 } 42 43 spin_lock_bh(&enic->devcmd_lock); 44 45 vnic_dev_cmd_proxy_by_index_start(vdev, vf); 46 err = vnic_dev_cmd(vdev, cmd, a0, a1, wait); 47 vnic_dev_cmd_proxy_end(vdev); 48 49 spin_unlock_bh(&enic->devcmd_lock); 50 spin_unlock(&enic->enic_api_lock); 51 52 return err; 53 } 54 EXPORT_SYMBOL(enic_api_devcmd_proxy_by_index); 55