Author: Linux Manual

NAME ibv_query_device – query an RDMA device’s attributes SYNOPSIS #include <infiniband/verbs.h> int ibv_query_device(struct ibv_context *context, struct ibv_device_attr *device_attr); DESCRIPTION ibv_query_device() returns the attributes of the device with context context. The argument device_attr is a pointer to an ibv_device_attr struct, as defined in <infiniband/verbs.h>. struct ibv_device_attr { char fw_ver[64]; /* FW version */ uint64_t node_guid; /*…

ibv_post_srq_ops – perform on a special shared receive queue (SRQ) configuration manipulations Synopsis #include <infiniband/verbs.h> int ibv_post_srq_ops(struct ibv_srq *srq, struct ibv_ops_wr *wr, struct ibv_ops_wr **bad_wr); Description The ibv_post_srq_ops() performs series of offload configuration manipulations on special types of SRQ srq. Currenlty it is used to configure tag matching SRQ. Series of configuration operations defined by…

ibv_post_srq_ops – perform on a special shared receive queue (SRQ) configuration manipulations Synopsis #include <infiniband/verbs.h> int ibv_post_srq_ops(struct ibv_srq *srq, struct ibv_ops_wr *wr, struct ibv_ops_wr **bad_wr); Description The ibv_post_srq_ops() performs series of offload configuration manipulations on special types of SRQ srq. Currenlty it is used to configure tag matching SRQ. Series of configuration operations defined by…

NAME ibv_post_srq_ops – perform on a special shared receive queue (SRQ) configuration manipulations SYNOPSIS #include <infiniband/verbs.h> int ibv_post_srq_ops(struct ibv_srq *srq, struct ibv_ops_wr *wr, struct ibv_ops_wr **bad_wr); DESCRIPTION The ibv_post_srq_ops() performs series of offload configuration manipulations on special types of SRQ srq. Currenlty it is used to configure tag matching SRQ. Series of configuration operations defined…

NAME ibv_post_send – post a list of work requests (WRs) to a send queue SYNOPSIS #include <infiniband/verbs.h> int ibv_post_send(struct ibv_qp *qp, struct ibv_send_wr *wr, struct ibv_send_wr **bad_wr); DESCRIPTION ibv_post_send() posts the linked list of work requests (WRs) starting with wr to the send queue of the queue pair qp. It stops processing WRs from this…

NAME ibv_post_recv – post a list of work requests (WRs) to a receive queue SYNOPSIS #include <infiniband/verbs.h> int ibv_post_recv(struct ibv_qp *qp, struct ibv_recv_wr *wr, struct ibv_recv_wr **bad_wr); DESCRIPTION ibv_post_recv() posts the linked list of work requests (WRs) starting with wr to the receive queue of the queue pair qp. It stops processing WRs from this…

NAME ibv_event_type_str – Return string describing event_type enum value ibv_node_type_str – Return string describing node_type enum value ibv_port_state_str – Return string describing port_state enum value SYNOPSIS #include <infiniband/verbs.h> const char *ibv_event_type_str(enum ibv_event_type event_type); const char *ibv_node_type_str(enum ibv_node_type node_type); const char *ibv_port_state_str(enum ibv_port_state port_state); DESCRIPTION ibv_node_type_str() returns a string describing the node type enum value node_type….

NAME ibv_poll_cq – poll a completion queue (CQ) SYNOPSIS #include <infiniband/verbs.h> int ibv_poll_cq(struct ibv_cq *cq, int num_entries, struct ibv_wc *wc); DESCRIPTION ibv_poll_cq() polls the CQ cq for work completions and returns the first num_entries (or all available completions if the CQ contains fewer than this number) in the array wc. The argument wc is a…

NAME ibv_open_xrcd, ibv_close_xrcd – open or close an XRC protection domain (XRCDs) SYNOPSIS #include <infiniband/verbs.h> struct ibv_xrcd *ibv_open_xrcd(struct ibv_context *context, struct ibv_xrcd_init_attr *xrcd_init_attr); int ibv_close_xrcd(struct ibv_xrcd *xrcd); DESCRIPTION ibv_open_xrcd() open an XRC domain for the RDMA device context context xrcd_init_attr is an ibv_xrcd_init_attr struct, as defined in <infiniband/verbs.h>. struct ibv_xrcd_init_attr { uint32_t comp_mask; /* Identifies…

NAME ibv_open_qp – open a shareable queue pair (QP) SYNOPSIS #include <infiniband/verbs.h> struct ibv_qp *ibv_open_qp(struct ibv_context *context, struct ibv_qp_open_attr *qp_open_attr); DESCRIPTION ibv_open_qp() opens an existing queue pair (QP) associated with the extended protection domain xrcd. The argument qp_open_attr is an ibv_qp_open_attr struct, as defined in <infiniband/verbs.h>. struct ibv_qp_open_attr { uint32_t comp_mask; /* Identifies valid fields…

NAME ibv_open_device, ibv_close_device – open and close an RDMA device context SYNOPSIS #include <infiniband/verbs.h> struct ibv_context *ibv_open_device(struct ibv_device *device); int ibv_close_device(struct ibv_context *context); DESCRIPTION ibv_open_device() opens the device device and creates a context for further use. ibv_close_device() closes the device context context. RETURN VALUE ibv_open_device() returns a pointer to the allocated device context, or NULL…

NAME ibv_event_type_str – Return string describing event_type enum value ibv_node_type_str – Return string describing node_type enum value ibv_port_state_str – Return string describing port_state enum value SYNOPSIS #include <infiniband/verbs.h> const char *ibv_event_type_str(enum ibv_event_type event_type); const char *ibv_node_type_str(enum ibv_node_type node_type); const char *ibv_port_state_str(enum ibv_port_state port_state); DESCRIPTION ibv_node_type_str() returns a string describing the node type enum value node_type….

NAME ibv_modify_wq – Modify a Work Queue (WQ). SYNOPSIS #include <infiniband/verbs.h> struct int ibv_modify_wq(struct ibv_wq *wq, struct ibv_wq_attr *wq_attr); DESCRIPTION ibv_modify_wq() modifys a WQ wq. The argument wq_attr is an ibv_wq_attr struct, as defined in <infiniband/verbs.h>. struct ibv_wq_attr { uint32_t attr_mask; /* Use enum ibv_wq_attr_mask */ enum ibv_wq_state wq_state; /* Move to this state */…

NAME ibv_modify_srq – modify attributes of a shared receive queue (SRQ) SYNOPSIS #include <infiniband/verbs.h> int ibv_modify_srq(struct ibv_srq *srq, struct ibv_srq_attr *srq_attr, int srq_attr_mask); DESCRIPTION ibv_modify_srq() modifies the attributes of SRQ srq with the attributes in srq_attr according to the mask srq_attr_mask. The argument srq_attr is an ibv_srq_attr struct, as defined in <infiniband/verbs.h>. struct ibv_srq_attr {…

NAME ibv_modify_qp_rate_limit – modify the send rate limits attributes of a queue pair (QP) SYNOPSIS #include <infiniband/verbs.h> int ibv_modify_qp_rate_limit(struct ibv_qp *qp, struct ibv_qp_rate_limit_attr *attr); DESCRIPTION ibv_modify_qp_rate_limit() modifies the send rate limiting packet pacing attributes of QP qp with the attributes in attr. The argument attr is an ibv_qp_rate_limit_attr struct, as defined in <infiniband/verbs.h>. The rate_limit…

NAME ibv_modify_qp – modify the attributes of a queue pair (QP) SYNOPSIS #include <infiniband/verbs.h> int ibv_modify_qp(struct ibv_qp *qp, struct ibv_qp_attr *attr, int attr_mask); DESCRIPTION ibv_modify_qp() modifies the attributes of QP qp with the attributes in attr according to the mask attr_mask. The argument attr is an ibv_qp_attr struct, as defined in <infiniband/verbs.h>. struct ibv_qp_attr {…

NAME ibv_flow_action_esp – Flow action esp for verbs SYNOPSIS #include <infiniband/verbs.h> struct ibv_flow_action * ibv_create_flow_action_esp(struct ibv_context *ctx, struct ibv_flow_action_esp *esp); int ibv_modify_flow_action_esp(struct ibv_flow_action *action, struct ibv_flow_action_esp *esp); int ibv_destroy_flow_action(struct ibv_flow_action *action); DESCRIPTION An IPSEC ESP flow steering action allows a flow steering rule to decrypt or encrypt a packet after matching. Each action contains the…

NAME ibv_modify_cq – modify a completion queue (CQ) SYNOPSIS #include <infiniband/verbs.h> int ibv_modify_cq(struct ibv_cq *cq, struct ibv_modify_cq_attr *cq_attr); DESCRIPTION ibv_modify_cq() modify a CQ cq. The argument cq_attr is an ibv_modify_cq_attr struct, as defined in <infiniband/verbs.h>. struct ibv_moderate_cq { uint16_t cq_count; /* number of completions per event */ uint16_t cq_period; /* in micro seconds */ };…

NAME ibv_alloc_dm, ibv_free_dm, ibv_memcpy_to/from_dm – allocate or free a device memory buffer (DMs) and perform memory copy to or from it SYNOPSIS #include <infiniband/verbs.h> struct ibv_dm *ibv_alloc_dm(struct ibv_context *context, struct ibv_alloc_dm_attr *attr); int ibv_free_dm(struct ibv_dm *dm); DESCRIPTION ibv_alloc_dm() allocates a device memory buffer for the RDMA device context context. The argument attr is a pointer…

NAME ibv_alloc_dm, ibv_free_dm, ibv_memcpy_to/from_dm – allocate or free a device memory buffer (DMs) and perform memory copy to or from it SYNOPSIS #include <infiniband/verbs.h> struct ibv_dm *ibv_alloc_dm(struct ibv_context *context, struct ibv_alloc_dm_attr *attr); int ibv_free_dm(struct ibv_dm *dm); DESCRIPTION ibv_alloc_dm() allocates a device memory buffer for the RDMA device context context. The argument attr is a pointer…