ibv_create_qp_ex - create or destroy a queue pair (QP)
#include <infiniband/verbs.h> struct ibv_qp *ibv_create_qp_ex(struct ibv_context *context, struct ibv_qp_init_attr_ex *qp_init_attr); int ibv_destroy_qp(struct ibv_qp *qp);
Libibverbs Programmer's Manual IBV_CREATE_QP_EX(3) NAME ibv_create_qp_ex, ibv_destroy_qp - create or destroy a queue pair (QP) SYNOPSIS #include <infiniband/verbs.h> struct ibv_qp *ibv_create_qp_ex(struct ibv_context *context, struct ibv_qp_init_attr_ex *qp_init_attr); int ibv_destroy_qp(struct ibv_qp *qp); DESCRIPTION ibv_create_qp_ex() creates a queue pair (QP) associated with the pro- tection domain pd. The argument qp_init_attr_ex is an ibv_qp_init_attr_ex struct, as defined in <infiniband/verbs.h>. struct ibv_qp_init_attr_ex { void *qp_context; /* Associated context of the QP */ struct ibv_cq *send_cq; /* CQ to be associated with the Send Queue (SQ) */ struct ibv_cq *recv_cq; /* CQ to be associated with the Receive Queue (RQ) */ struct ibv_srq *srq; /* SRQ handle if QP is to be associated with an SRQ, otherwise NULL */ struct ibv_qp_cap cap; /* QP capabilities */ enum ibv_qp_type qp_type; /* QP Transport Service Type: IBV_QPT_RC, IBV_QPT_XRC_SEND, IBV_QPT_XRC_RECV, IBV_QPT_UC, IBV_QPT_UD or IBV_QPT_RAW_PACKET */ int sq_sig_all; /* If set, each Work Request (WR) submitted to the SQ generates a completion entry */ uint32_t comp_mask; /* Identifies valid fields */ struct ibv_pd *pd; /* PD to be associated with the QP */ struct ibv_xrcd *xrcd; /* XRC domain to be associated with the target QP */ enum ibv_qp_create_flags create_flags; /* Creation flags for this QP */ }; struct ibv_qp_cap { uint32_t max_send_wr; /* Requested max number of outstanding WRs in the SQ */ uint32_t max_recv_wr; /* Requested max number of outstanding WRs in the RQ */ uint32_t max_send_sge; /* Requested max number of scatter/gather (s/g) elements in a WR in the SQ */ uint32_t max_recv_sge; /* Requested max number of s/g elements in a WR in the SQ */ uint32_t max_inline_data;/* Requested max number of data (bytes) that can be posted inline to the SQ, otherwise 0 */ }; The function ibv_create_qp_ex() will update the qp_init_attr_ex->cap struct with the actual QP values of the QP that was created; the values will be greater than or equal to the values requested. ibv_destroy_qp() destroys the QP qp. RETURN VALUE ibv_create_qp_ex() returns a pointer to the created QP, or NULL if the request fails. Check the QP number (qp_num) in the returned QP. ibv_destroy_qp() returns 0 on success, or the value of errno on failure (which indicates the failure reason). ATTRIBUTES See attributes(7) for descriptions of the following attributes: +---------------+-----------------------+ |ATTRIBUTE TYPE | ATTRIBUTE VALUE | +---------------+-----------------------+ |Availability | network/open-fabrics | +---------------+-----------------------+ |Stability | Pass-through volatile | +---------------+-----------------------+ NOTES The attributes max_recv_wr and max_recv_sge are ignored by ibv_cre- ate_qp_ex() if the QP is to be associated with an SRQ. ibv_destroy_qp() fails if the QP is attached to a multicast group. Source code for open source software components in Oracle Solaris can be found at https://www.oracle.com/downloads/opensource/solaris-source- code-downloads.html. This software was built from source available at https://github.com/oracle/solaris-userland. The original community source was downloaded from ['https://www.openfabrics.org/down- loads/ibutils/ibutils-1.5.7-0.2.gbd7e502.tar.gz', 'https://www.openfab- rics.org/downloads/libibverbs/libibverbs-1.1.8.tar.gz', 'https://www.openfabrics.org/downloads/libmlx4/libmlx4-1.0.6.tar.gz', 'https://www.openfabrics.org/downloads/libsdp/lib- sdp-1.1.108-0.15.gd7fdb72.tar.gz', 'https://www.openfabrics.org/down- loads/management/infiniband-diags-1.6.5.tar.gz', 'https://www.openfab- rics.org/downloads/management/libibmad-1.3.12.tar.gz', 'https://www.openfabrics.org/downloads/management/libibu- mad-1.3.10.2.tar.gz', 'https://www.openfabrics.org/downloads/manage- ment/opensm-3.3.19.tar.gz', 'https://www.openfabrics.org/down- loads/perftest/perftest-1.3.0-0.42.gf350d3d.tar.gz', 'https://www.open- fabrics.org/downloads/qperf/qperf-0.4.9.tar.gz', 'https://www.openfab- rics.org/downloads/rdmacm/librdmacm-1.0.21.tar.gz', 'https://www.open- fabrics.org/downloads/rds-tools/rds-tools-2.0.4.tar.gz']. Further information about this software can be found on the open source community website at http://www.openfabrics.org/. SEE ALSO ibv_alloc_pd(3), ibv_modify_qp(3), ibv_query_qp(3) AUTHORS Yishai Hadas <yishaih@mellanox.com> libibverbs 2013-06-26 IBV_CREATE_QP_EX(3)