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Diffstat (limited to 'man/ibv_query_device_ex.3')
| -rw-r--r-- | man/ibv_query_device_ex.3 | 89 |
1 files changed, 0 insertions, 89 deletions
diff --git a/man/ibv_query_device_ex.3 b/man/ibv_query_device_ex.3 deleted file mode 100644 index 88c8ce4..0000000 --- a/man/ibv_query_device_ex.3 +++ /dev/null @@ -1,89 +0,0 @@ -.\" -*- nroff -*- -.\" -.TH IBV_QUERY_DEVICE_EX 3 2014-12-17 libibverbs "Libibverbs Programmer's Manual" -.SH "NAME" -ibv_query_device_ex \- query an RDMA device's attributes -.SH "SYNOPSIS" -.nf -.B #include <infiniband/verbs.h> -.sp -.BI "int ibv_query_device_ex(struct ibv_context " "*context", -.BI " struct ibv_device_attr_ex " "*attr" ); -.fi -.SH "DESCRIPTION" -.B ibv_query_device_ex() -returns the attributes of the device with context -.I context\fR. -The argument -.I attr -is a pointer to an ibv_device_attr_ex struct, as defined in <infiniband/verbs.h>. -.PP -.nf -struct ibv_device_attr_ex { -.in +8 -struct ibv_device_attr orig_attr; -uint32_t comp_mask; /* Compatibility mask that defines which of the following variables are valid */ -struct ibv_odp_caps odp_caps; /* On-Demand Paging capabilities */ -uint64_t completion_timestamp_mask; /* Completion timestamp mask (0 = unsupported) */ -uint64_t hca_core_clock; /* The frequency (in kHZ) of the HCA (0 = unsupported) */ -uint64_t device_cap_flags_ex; /* Extended device capability flags */ -struct ibv_tso_caps tso_caps; /* TCP segmentation offload capabilities */ -struct ibv_rss_caps rss_caps; /* RSS capabilities */ -uint32_t max_wq_type_rq; /* Max Work Queue from type RQ */ -.in -8 -}; - -struct ibv_odp_caps { - uint64_t general_odp_caps; /* Mask with enum ibv_odp_general_cap_bits */ - struct { - uint32_t rc_odp_caps; /* Mask with enum ibv_odp_tranport_cap_bits to know which operations are supported. */ - uint32_t uc_odp_caps; /* Mask with enum ibv_odp_tranport_cap_bits to know which operations are supported. */ - uint32_t ud_odp_caps; /* Mask with enum ibv_odp_tranport_cap_bits to know which operations are supported. */ - } per_transport_caps; -}; - -enum ibv_odp_general_cap_bits { - IBV_ODP_SUPPORT = 1 << 0, /* On demand paging is supported */ -}; - -enum ibv_odp_transport_cap_bits { - IBV_ODP_SUPPORT_SEND = 1 << 0, /* Send operations support on-demand paging */ - IBV_ODP_SUPPORT_RECV = 1 << 1, /* Receive operations support on-demand paging */ - IBV_ODP_SUPPORT_WRITE = 1 << 2, /* RDMA-Write operations support on-demand paging */ - IBV_ODP_SUPPORT_READ = 1 << 3, /* RDMA-Read operations support on-demand paging */ - IBV_ODP_SUPPORT_ATOMIC = 1 << 4, /* RDMA-Atomic operations support on-demand paging */ -}; - -struct ibv_tso_caps { - uint32_t max_tso; /* Maximum payload size in bytes supported for segmentation by TSO engine.*/ - uint32_t supported_qpts; /* Bitmap showing which QP types are supported by TSO operation. */ -}; - -struct ibv_rss_caps { - uint32_t supported_qpts; /* Bitmap showing which QP types are supported RSS */ - uint32_t max_rwq_indirection_tables; /* Max receive work queue indirection tables */ - uint32_t max_rwq_indirection_table_size; /* Max receive work queue indirection table size */ - uint64_t rx_hash_fields_mask; /* Mask with enum ibv_rx_hash_fields to know which incoming packet's field can participates in the RX hash */ - uint8_t rx_hash_function; /* Mask with enum ibv_rx_hash_function_flags to know which hash functions are supported */ -}; - -.fi -.SH "RETURN VALUE" -.B ibv_query_device_ex() -returns 0 on success, or the value of errno on failure (which indicates the failure reason). -.SH "NOTES" -The maximum values returned by this function are the upper limits of -supported resources by the device. However, it may not be possible to -use these maximum values, since the actual number of any resource that -can be created may be limited by the machine configuration, the amount -of host memory, user permissions, and the amount of resources already -in use by other users/processes. -.SH "SEE ALSO" -.BR ibv_query_device (3), -.BR ibv_open_device (3), -.BR ibv_query_port (3), -.BR ibv_query_pkey (3), -.BR ibv_query_gid (3) -.SH "AUTHORS" -.TP -Majd Dibbiny <majd@mellanox.com> |