Commit 23528aa3 authored by Shivaji Kant's avatar Shivaji Kant Committed by Keith Busch
Browse files

nvme: enable PCI P2PDMA support for RDMA transport 



Enable BLK_FEAT_PCI_P2PDMA on the NVMe when the underlying
RDMA controller supports it.

Suggested-by: default avatarPranjal Shrivastava <praan@google.com>
Reviewed-by: default avatarPranjal Shrivastava <praan@google.com>
Reviewed-by: default avatarHenrique Carvalho <henrique.carvalho@suse.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarShivaji Kant <shivajikant@google.com>
Signed-off-by: default avatarKeith Busch <kbusch@kernel.org>
parent 0a5a9464

drivers/nvme/host/rdma.c

+8 −0
Original line number Diff line number Diff line
@@ -2189,6 +2189,13 @@ static void nvme_rdma_reset_ctrl_work(struct work_struct *work) 
	nvme_rdma_reconnect_or_remove(ctrl, ret);

}



static bool nvme_rdma_supports_pci_p2pdma(struct nvme_ctrl *ctrl)

{

	struct nvme_rdma_ctrl *r_ctrl = to_rdma_ctrl(ctrl);



	return ib_dma_pci_p2p_dma_supported(r_ctrl->device->dev);

}



static const struct nvme_ctrl_ops nvme_rdma_ctrl_ops = {

	.name			= "rdma",

	.module			= THIS_MODULE,
@@ -2203,6 +2210,7 @@ static const struct nvme_ctrl_ops nvme_rdma_ctrl_ops = { 
	.get_address		= nvmf_get_address,

	.stop_ctrl		= nvme_rdma_stop_ctrl,

	.get_virt_boundary	= nvme_get_virt_boundary,

	.supports_pci_p2pdma	= nvme_rdma_supports_pci_p2pdma,

};



/*