NAME¶
ibv_req_notify_cq - request completion notification on a completion queue (CQ)
SYNOPSIS¶
-
#include <infiniband/verbs.h>
int ibv_req_notify_cq(struct ibv_cq *cq, int solicited_only);
DESCRIPTION¶
ibv_req_notify_cq() requests a completion notification on the completion
queue (CQ) cq.
Upon the addition of a new CQ entry (CQE) to cq, a
completion event will be added to the completion channel associated with the
CQ. If the argument solicited_only is zero, a completion event is
generated for any new CQE. If solicited_only is non-zero, an event is
only generated for a new CQE with that is considered
“solicited.” A CQE is solicited if it is a receive completion
for a message with the Solicited Event header bit set, or if the status is
not successful. All other successful receive completions, or any successful
send completion is unsolicited.
RETURN VALUE¶
ibv_req_notify_cq() returns 0 on success, or the value of errno on
failure (which indicates the failure reason).
NOTES¶
The request for notification is “one shot.” Only one completion
event will be generated for each call to ibv_req_notify_cq().
AUTHOR¶
Dotan Barak <dotanba@gmail.com>