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