Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
28 lines
761 B
C
28 lines
761 B
C
// SPDX-License-Identifier: GPL-2.0-or-later
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#include <net/netdev_queues.h>
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/**
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* netdev_queue_get_dma_dev() - get dma device for zero-copy operations
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* @dev: net_device
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* @idx: queue index
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*
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* Get dma device for zero-copy operations to be used for this queue.
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* When such device is not available or valid, the function will return NULL.
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*
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* Return: Device or NULL on error
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*/
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struct device *netdev_queue_get_dma_dev(struct net_device *dev, int idx)
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{
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const struct netdev_queue_mgmt_ops *queue_ops = dev->queue_mgmt_ops;
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struct device *dma_dev;
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if (queue_ops && queue_ops->ndo_queue_get_dma_dev)
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dma_dev = queue_ops->ndo_queue_get_dma_dev(dev, idx);
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else
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dma_dev = dev->dev.parent;
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return dma_dev && dma_dev->dma_mask ? dma_dev : NULL;
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}
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