This series creates new helper API functions for draining a queue pair. It is a rework of an original patch created by Christoph Hellwig as part of the CQ API rework and was dropped to be resubmitted by me with iw_cxgb4 support. Original thread: http://www.spinics.net/lists/linux-rdma/msg30296.html Changes since v3: - WARN_ONCE() if the CQ is using IB_POLL_DIRECT context. - added iser patch to use ib_drain_sq(). - fixed up function comments to specify caller requirements - checkpatched Changes since v2: - created 3 drain API functions: ib_drain_rq(), ib_drain_sq(), and ib_drain_qp() - add provider-specific drain function pointers for the sq and rq - refactored the code a bit - support for IB_DIRECT_POLL CQs Changes since v1: - added comments to the ib_drain_qp() function header specifying the consumer requirements - in __ib_drain_qp(), if the ib_post_send() fails, still wait for the recv wr to drain since we already posted it. - CC the SRP maintainer, bart.vanassche@xxxxxxxxxxx. --- Steve Wise (4): IB: new common API for draining queues iw_cxgb4: add queue drain functions IB/srp: Use ib_drain_rq() IB/iser: Use ib_drain_sq() drivers/infiniband/core/verbs.c | 164 +++++++++++++++++++++++++++ drivers/infiniband/hw/cxgb4/cq.c | 9 +- drivers/infiniband/hw/cxgb4/iw_cxgb4.h | 4 + drivers/infiniband/hw/cxgb4/provider.c | 2 + drivers/infiniband/hw/cxgb4/qp.c | 16 +++ drivers/infiniband/ulp/iser/iscsi_iser.h | 7 -- drivers/infiniband/ulp/iser/iser_initiator.c | 7 -- drivers/infiniband/ulp/iser/iser_verbs.c | 15 +-- drivers/infiniband/ulp/srp/ib_srp.c | 40 +------ include/rdma/ib_verbs.h | 5 + 10 files changed, 205 insertions(+), 64 deletions(-) -- 2.7.0 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
