Commit 97458fd5 authored by Bart Van Assche's avatar Bart Van Assche Committed by Jason Gunthorpe
Browse files

RDMA/rxe: Increase DMA max_segment_size parameter 

Increase the DMA max_segment_size parameter from 64 KB to 2 GB.

Link: https://lore.kernel.org/r/20191025225830.257535-3-bvanassche@acm.org


Signed-off-by: default avatarBart Van Assche <bvanassche@acm.org>
Reviewed-by: default avatarJason Gunthorpe <jgg@mellanox.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@mellanox.com>
parent ecdfdfdb

drivers/infiniband/sw/rxe/rxe_verbs.c

+3 −0
Original line number Diff line number Diff line
@@ -1175,6 +1175,9 @@ int rxe_register_device(struct rxe_dev *rxe, const char *ibdev_name) 
	addrconf_addr_eui48((unsigned char *)&dev->node_guid,

			    rxe->ndev->dev_addr);

	dev->dev.dma_ops = &dma_virt_ops;

	dev->dev.dma_parms = &rxe->dma_parms;

	rxe->dma_parms = (struct device_dma_parameters)

		{ .max_segment_size = SZ_2G };

	dma_coerce_mask_and_coherent(&dev->dev,

				     dma_get_required_mask(&dev->dev));

drivers/infiniband/sw/rxe/rxe_verbs.h

+1 −0
Original line number Diff line number Diff line
@@ -384,6 +384,7 @@ struct rxe_port { 
struct rxe_dev {

	struct ib_device	ib_dev;

	struct ib_device_attr	attr;

	struct device_dma_parameters dma_parms;

	int			max_ucontext;

	int			max_inline_data;

	struct mutex	usdev_lock;

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