[PATCH for-next v2 2/2] RDMA/efa: Expose 64-bit send WR ID support to userspace
Yonatan Nachum <[email protected]>
| Newsgroups | org.kernel.vger.linux-rdma |
|---|---|
| Message-ID | <[email protected]> |
Currently EFA WRs support 16-bit request ID, this requires EFA to manage a translation table to translate the IB WR ID from 64-bits to 16-bits and translating it back on CQ completion. Expose a new device capability to handle 64-bit request ID for SQ WRs allowing userspace to directly post the 64-bit ID to the device. Reviewed-by: Michael Margolin <[email protected]> Reviewed-by: Tom Sela <[email protected]> Signed-off-by: Yonatan Nachum <[email protected]> --- drivers/infiniband/hw/efa/efa_verbs.c | 3 +++ include/uapi/rdma/efa-abi.h | 1 + 2 files changed, 4 insertions(+) diff --git a/drivers/infiniband/hw/efa/efa_verbs.c b/drivers/infiniband/hw/efa/efa_verbs.c index 73a80caca7e2..6abb93b50731 100644 --- a/drivers/infiniband/hw/efa/efa_verbs.c +++ b/drivers/infiniband/hw/efa/efa_verbs.c @@ -272,6 +272,9 @@ int efa_query_device(struct ib_device *ibdev, if (EFA_DEV_CAP(dev, EVENT_COUNTERS)) resp.device_caps |= EFA_QUERY_DEVICE_CAPS_COMP_CNTR; + if (EFA_DEV_CAP(dev, SQ_64_BIT_REQ_ID)) + resp.device_caps |= EFA_QUERY_DEVICE_CAPS_SQ_64_BIT_REQ_ID; + if (dev->neqs) resp.device_caps |= EFA_QUERY_DEVICE_CAPS_CQ_NOTIFICATIONS; diff --git a/include/uapi/rdma/efa-abi.h b/include/uapi/rdma/efa-abi.h index 5d3d01b6333e..2094b4bcc5cf 100644 --- a/include/uapi/rdma/efa-abi.h +++ b/include/uapi/rdma/efa-abi.h @@ -136,6 +136,7 @@ enum { EFA_QUERY_DEVICE_CAPS_UNSOLICITED_WRITE_RECV = 1 << 6, EFA_QUERY_DEVICE_CAPS_CQ_WITH_EXT_MEM = 1 << 7, EFA_QUERY_DEVICE_CAPS_COMP_CNTR = 1 << 8, + EFA_QUERY_DEVICE_CAPS_SQ_64_BIT_REQ_ID = 1 << 9, }; struct efa_ibv_ex_query_device_resp { -- 2.50.1