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authorAmrani, Ram <Ram.Amrani@cavium.com>2017-06-26 19:05:05 +0300
committerDoug Ledford <dledford@redhat.com>2017-07-27 08:59:52 -0400
commitad84dad2160d5f36bb471b391462d651c887d693 (patch)
tree71de6dd7a72915810ff6089327f189bccdc25955
parent9c2d33d44dccfb0cdac987ddc3716527ebf971e0 (diff)
RDMA/qedr: notify user application if DPM is supported
Direct Packet Mode support may be disabled, e.g, due to limited resources. Notifying the user application prevents wasting cycles on attempting to send these kind of packets. Signed-off-by: Ram Amrani <Ram.Amrani@cavium.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
-rw-r--r--drivers/infiniband/hw/qedr/main.c1
-rw-r--r--drivers/infiniband/hw/qedr/qedr.h2
-rw-r--r--drivers/infiniband/hw/qedr/verbs.c1
-rw-r--r--include/uapi/rdma/qedr-abi.h1
4 files changed, 5 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/qedr/main.c b/drivers/infiniband/hw/qedr/main.c
index 0ae30f5c8cbc..199b6edbef92 100644
--- a/drivers/infiniband/hw/qedr/main.c
+++ b/drivers/infiniband/hw/qedr/main.c
@@ -777,6 +777,7 @@ static struct qedr_dev *qedr_add(struct qed_dev *cdev, struct pci_dev *pdev,
if (rc)
goto init_err;
+ dev->user_dpm_enabled = dev_info.user_dpm_enabled;
dev->num_hwfns = dev_info.common.num_hwfns;
dev->rdma_ctx = dev->ops->rdma_get_rdma_ctx(cdev);
diff --git a/drivers/infiniband/hw/qedr/qedr.h b/drivers/infiniband/hw/qedr/qedr.h
index 392e76e26840..b2bb42e2805d 100644
--- a/drivers/infiniband/hw/qedr/qedr.h
+++ b/drivers/infiniband/hw/qedr/qedr.h
@@ -162,6 +162,8 @@ struct qedr_dev {
struct qedr_qp *gsi_qp;
unsigned long enet_state;
+
+ u8 user_dpm_enabled;
};
#define QEDR_MAX_SQ_PBL (0x8000)
diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c
index 2ae71b8f1ba8..4322ee00498e 100644
--- a/drivers/infiniband/hw/qedr/verbs.c
+++ b/drivers/infiniband/hw/qedr/verbs.c
@@ -376,6 +376,7 @@ struct ib_ucontext *qedr_alloc_ucontext(struct ib_device *ibdev,
memset(&uresp, 0, sizeof(uresp));
+ uresp.dpm_enabled = dev->user_dpm_enabled;
uresp.db_pa = ctx->dpi_phys_addr;
uresp.db_size = ctx->dpi_size;
uresp.max_send_wr = dev->attr.max_sqe;
diff --git a/include/uapi/rdma/qedr-abi.h b/include/uapi/rdma/qedr-abi.h
index 75c270d839c8..2684004ec4fd 100644
--- a/include/uapi/rdma/qedr-abi.h
+++ b/include/uapi/rdma/qedr-abi.h
@@ -49,6 +49,7 @@ struct qedr_alloc_ucontext_resp {
__u32 sges_per_recv_wr;
__u32 sges_per_srq_wr;
__u32 max_cqes;
+ __u8 dpm_enabled;
};
struct qedr_alloc_pd_ureq {

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