-*- nroff -*-
Licensed under the OpenIB.org BSD license (FreeBSD Variant) - See COPYING.md

ibv_create_wq, ibv_destroy_wq - create or destroy a Work Queue (WQ).

 #include <infiniband/verbs_exp.h>  "struct ibv_wq *ibv_create_wq(struct ibv_context " "*context,"  " struct ibv_wq_init_attr " "*wq_init_attr" );  "int ibv_destroy_wq(struct ibv_wq " "*wq" ); 

ibv_create_wq() creates a WQ associated with the ibv_context context. The argument wq_init_attr is an ibv_wq_init_attr struct, as defined in <infiniband/verbs.h>.

struct ibv_wq_init_attr {
void *wq_context; /* Associated context of the WQ */
enum ibv_wq_type wq_type; /* WQ type */
uint32_t max_wr; /* Requested max number of outstanding WRs in the WQ */
uint32_t max_sge; /* Requested max number of scatter/gather (s/g) elements per WR in the WQ */
struct ibv_pd *pd; /* PD to be associated with the WQ */
struct ibv_cq *cq; /* CQ to be associated with the WQ */
uint32_t comp_mask; /* Identifies valid fields. Use ibv_wq_init_attr_mask */
uint32_t create_flags /* Creation flags for this WQ, use enum ibv_wq_flags */
};

enum ibv_wq_flags {
IBV_WQ_FLAGS_CVLAN_STRIPPING = 1 << 0, /* CVLAN field will be stripped from incoming packets */
IBV_WQ_FLAGS_SCATTER_FCS = 1 << 1, /* FCS field will be scattered to host memory */
IBV_WQ_FLAGS_RESERVED = 1 << 2,
};


The function
 ibv_create_wq() will update the
 wq_init_attr->max_wr and
 wq_init_attr->max_sge fields with the actual \s-1WQ\s0 values of the WQ that was created;
the values will be greater than or equal to the values requested.

 ibv_destroy_wq() destroys the WQ
 wq. 
 "RETURN VALUE"
 ibv_create_wq() returns a pointer to the created WQ, or NULL if the request fails.

 ibv_destroy_wq() returns 0 on success, or the value of errno on failure (which indicates the failure reason).
 "SEE ALSO"
 ibv_modify_wq (3), 
 "AUTHORS"

Yishai Hadas <yishaih@mellanox.com>