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authorCheng Xu <chengyou@linux.alibaba.com>2022-08-10 04:43:19 +0300
committerLeon Romanovsky <leonro@nvidia.com>2022-08-16 16:29:12 +0300
commit6cd8351c4ede5b3335c7eb13d009c3456e90b6df (patch)
treee791477ff5fa6eb7428ccab32ff57d423038e17b /drivers/infiniband/hw/erdma
parent1374901b850c8f2ff1ee0e62ffafbc4030572fc6 (diff)
downloadlinux-6cd8351c4ede5b3335c7eb13d009c3456e90b6df.tar.xz
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>
Diffstat (limited to 'drivers/infiniband/hw/erdma')
-rw-r--r--drivers/infiniband/hw/erdma/erdma_verbs.c4
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;