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RDMA/qedr: notify user application if DPM is supported

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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>
This commit is contained in:
Amrani, Ram 2017-06-26 19:05:05 +03:00 committed by Doug Ledford
parent 9c2d33d44d
commit ad84dad216
4 changed files with 5 additions and 0 deletions
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1
drivers/infiniband/hw/qedr/main.c
View file

@ -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);

2
drivers/infiniband/hw/qedr/qedr.h
View file

@ -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)

1
drivers/infiniband/hw/qedr/verbs.c
View file

@ -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;

1
include/uapi/rdma/qedr-abi.h
View file

@ -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 {