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RDMA/rxe: Increase DMA max_segment_size parameter

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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: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Bart Van Assche 2019-10-25 15:58:28 -07:00 committed by Jason Gunthorpe
parent ecdfdfdbe4
commit 97458fd510
2 changed files with 4 additions and 0 deletions
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3
drivers/infiniband/sw/rxe/rxe_verbs.c
View file

@ -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));

1
drivers/infiniband/sw/rxe/rxe_verbs.h
View file

@ -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;