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| author |   Cheng Xu <chengyou@linux.alibaba.com> | 2022-08-10 09:43:19 +0800 |
|---|---|---|
| committer |   Leon Romanovsky <leonro@nvidia.com> | 2022-08-16 16:29:12 +0300 |
| commit | 6cd8351c4ede5b3335c7eb13d009c3456e90b6df (patch) | |
| tree | e791477ff5fa6eb7428ccab32ff57d423038e17b | |
| parent | RDMA/erdma: Using the key in FMR WR instead of MR structure (diff) | |
| download | linux-dev-6cd8351c4ede5b3335c7eb13d009c3456e90b6df.tar.xz linux-dev-6cd8351c4ede5b3335c7eb13d009c3456e90b6df.zip | |
RDMA/erdma: Correct the max_qp and max_cq capacities of the device
QP0 in HW is used for CMDQ, and the rest is for RDMA QPs. So the actual
max_qp capacity reported to core should be max_qp (reported by HW) - 1.
So does max_cq.
Fixes: 155055771704 ("RDMA/erdma: Add verbs implementation")
Link: https://lore.kernel.org/all/20220810014320.88026-1-chengyou@linux.alibaba.com
Signed-off-by: Cheng Xu <chengyou@linux.alibaba.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
| -rw-r--r-- | drivers/infiniband/hw/erdma/erdma_verbs.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/erdma/erdma_verbs.c b/drivers/infiniband/hw/erdma/erdma_verbs.c index a7a3d42e2016..699bd3f59cd3 100644 --- a/drivers/infiniband/hw/erdma/erdma_verbs.c +++ b/drivers/infiniband/hw/erdma/erdma_verbs.c @@ -280,7 +280,7 @@ int erdma_query_device(struct ib_device *ibdev, struct ib_device_attr *attr, attr->vendor_id = PCI_VENDOR_ID_ALIBABA; attr->vendor_part_id = dev->pdev->device; attr->hw_ver = dev->pdev->revision; - attr->max_qp = dev->attrs.max_qp; + attr->max_qp = dev->attrs.max_qp - 1; attr->max_qp_wr = min(dev->attrs.max_send_wr, dev->attrs.max_recv_wr); attr->max_qp_rd_atom = dev->attrs.max_ord; attr->max_qp_init_rd_atom = dev->attrs.max_ird; @@ -291,7 +291,7 @@ int erdma_query_device(struct ib_device *ibdev, struct ib_device_attr *attr, attr->max_send_sge = dev->attrs.max_send_sge; attr->max_recv_sge = dev->attrs.max_recv_sge; attr->max_sge_rd = dev->attrs.max_sge_rd; - attr->max_cq = dev->attrs.max_cq; + attr->max_cq = dev->attrs.max_cq - 1; attr->max_cqe = dev->attrs.max_cqe; attr->max_mr = dev->attrs.max_mr; attr->max_pd = dev->attrs.max_pd; |