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| author | Konstantin Taranov <kotaranov@microsoft.com> | 2024-03-04 16:52:41 +0300 |
|---|---|---|
| committer | Leon Romanovsky <leon@kernel.org> | 2024-03-07 12:32:33 +0300 |
| commit | 2d5c00815778ec4f4e0a84e405e3e157b7815db1 (patch) | |
| tree | 0533a597a3dcca858401573693f940c13b88e95e /drivers/infiniband/hw/mana/qp.c | |
| parent | e02497fb654689049ba8b46f098f17d5f19e0b3c (diff) | |
| download | linux-2d5c00815778ec4f4e0a84e405e3e157b7815db1.tar.xz | |
RDMA/mana_ib: Use virtual address in dma regions for MRs
Introduce mana_ib_create_dma_region() to create dma regions with iova
for MRs. It allows creating MRs with any page offset. Previously,
only page-aligned addresses worked.
For dma regions that must have a zero dma offset (e.g., for queues),
mana_ib_create_zero_offset_dma_region() is added.
To get the zero offset, ib_umem_find_best_pgoff() is used with zero
pgoff_bitmask.
Fixes: 0266a177631d ("RDMA/mana_ib: Add a driver for Microsoft Azure Network Adapter")
Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>
Link: https://lore.kernel.org/r/1709560361-26393-3-git-send-email-kotaranov@linux.microsoft.com
Reviewed-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Diffstat (limited to 'drivers/infiniband/hw/mana/qp.c')
| -rw-r--r-- | drivers/infiniband/hw/mana/qp.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/mana/qp.c b/drivers/infiniband/hw/mana/qp.c index 5d4c05dcd003..6e7627745c95 100644 --- a/drivers/infiniband/hw/mana/qp.c +++ b/drivers/infiniband/hw/mana/qp.c @@ -357,8 +357,8 @@ static int mana_ib_create_qp_raw(struct ib_qp *ibqp, struct ib_pd *ibpd, } qp->sq_umem = umem; - err = mana_ib_gd_create_dma_region(mdev, qp->sq_umem, - &qp->sq_gdma_region); + err = mana_ib_create_zero_offset_dma_region(mdev, qp->sq_umem, + &qp->sq_gdma_region); if (err) { ibdev_dbg(&mdev->ib_dev, "Failed to create dma region for create qp-raw, %d\n", @@ -367,7 +367,7 @@ static int mana_ib_create_qp_raw(struct ib_qp *ibqp, struct ib_pd *ibpd, } ibdev_dbg(&mdev->ib_dev, - "mana_ib_gd_create_dma_region ret %d gdma_region 0x%llx\n", + "create_dma_region ret %d gdma_region 0x%llx\n", err, qp->sq_gdma_region); /* Create a WQ on the same port handle used by the Ethernet */ |