From 97458fd510917f142c417245fa5701a892ce69d7 Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Fri, 25 Oct 2019 15:58:28 -0700 Subject: 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: Bart Van Assche Reviewed-by: Jason Gunthorpe Signed-off-by: Jason Gunthorpe --- drivers/infiniband/sw/rxe/rxe_verbs.c | 3 +++ drivers/infiniband/sw/rxe/rxe_verbs.h | 1 + 2 files changed, 4 insertions(+) (limited to 'drivers/infiniband/sw') diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.c b/drivers/infiniband/sw/rxe/rxe_verbs.c index fa47bdcc7f54..9dd4bd7aea92 100644 --- a/drivers/infiniband/sw/rxe/rxe_verbs.c +++ b/drivers/infiniband/sw/rxe/rxe_verbs.c @@ -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)); diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.h b/drivers/infiniband/sw/rxe/rxe_verbs.h index 5c4b2239129c..95834206c80c 100644 --- a/drivers/infiniband/sw/rxe/rxe_verbs.h +++ b/drivers/infiniband/sw/rxe/rxe_verbs.h @@ -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; -- cgit v1.2.3-59-g8ed1b