Author: Linux Manual

ibv_query_gid – query an InfiniBand port’s GID table Synopsis#include <infiniband/verbs.h> int ibv_query_gid(struct ibv_context *context, uint8_t port_num, int index, union ibv_gid *gid);Descriptionibv_query_gid() returns the GID value in entry index of port port_num for device context context through the pointer gid. Return Valueibv_query_gid() returns 0 on success, and -1 on error. See Alsoibv_open_device(3), ibv_query_device(3), ibv_query_pkey(3), ibv_query_port(3) AuthorDotan…

ibv_query_device_ex – query an RDMA device’s attributes Synopsis#include <infiniband/verbs.h> int ibv_query_device_ex(struct ibv_context *context, struct ibv_device_attr_ex *attr);Descriptionibv_query_device_ex() returns the attributes of the device with context context. The argument attr is a pointer to an ibv_device_attr_ex struct, as defined in <infiniband/verbs.h>. struct ibv_device_attr_ex { struct ibv_device_attr orig_attr; uint32_t comp_mask; /* Compatibility mask that defines which of the…

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);Descriptionibv_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; /* Node GUID (in network…

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);Descriptionibv_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; /* Node GUID (in network…

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);DescriptionThe 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 linked lists of…

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);DescriptionThe 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 linked lists of…

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_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);Descriptionibv_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 list at the first…

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);Descriptionibv_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 list at the first…

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);Descriptionibv_node_type_str() returns a string describing the node type enum value node_type. ibv_port_state_str() returns a string…

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);Descriptionibv_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 pointer to an array…

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);Descriptionibv_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 valid fields */ int…

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);Descriptionibv_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 */ uint32_t qp_num; /*…

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);Descriptionibv_open_device() opens the device device and creates a context for further use. ibv_close_device() closes the device context context. Return Valueibv_open_device() returns a pointer to the allocated device context, or NULL if the request fails. ibv_close_device()…

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);Descriptionibv_node_type_str() returns a string describing the node type enum value node_type. ibv_port_state_str() returns a string…

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);Descriptionibv_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 */ enum ibv_wq_state curr_wq_state; /*…

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);Descriptionibv_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 { uint32_t max_wr; /* maximum…

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);Descriptionibv_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 defines the MAX send…

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);Descriptionibv_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 { enum ibv_qp_state qp_state; /*…

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);DescriptionAn IPSEC ESP flow steering action allows a flow steering rule to decrypt or encrypt a packet after matching. Each action contains the necessary information for this…