From 666e8ff535d401eb286fa20446e55ae984d91049 Mon Sep 17 00:00:00 2001 From: Daniel Kranzdorf Date: Thu, 21 Nov 2019 16:15:09 +0200 Subject: RDMA/efa: Expose RDMA read related attributes Query the device attributes for RDMA operations, including maximum transfer size and maximum number of SGEs per RDMA WR, and report them back to the userspace library. Link: https://lore.kernel.org/r/20191121141509.59297-4-galpress@amazon.com Signed-off-by: Daniel Kranzdorf Reviewed-by: Yossi Leybovich Signed-off-by: Gal Pressman Signed-off-by: Jason Gunthorpe --- include/uapi/rdma/efa-abi.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/uapi') diff --git a/include/uapi/rdma/efa-abi.h b/include/uapi/rdma/efa-abi.h index 9599a2a62be8..53b6e2036a9b 100644 --- a/include/uapi/rdma/efa-abi.h +++ b/include/uapi/rdma/efa-abi.h @@ -90,12 +90,18 @@ struct efa_ibv_create_ah_resp { __u8 reserved_30[2]; }; +enum { + EFA_QUERY_DEVICE_CAPS_RDMA_READ = 1 << 0, +}; + struct efa_ibv_ex_query_device_resp { __u32 comp_mask; __u32 max_sq_wr; __u32 max_rq_wr; __u16 max_sq_sge; __u16 max_rq_sge; + __u32 max_rdma_size; + __u32 device_caps; }; #endif /* EFA_ABI_USER_H */ -- cgit v1.2.3