diff options
| author | Shiraz Saleem <shiraz.saleem@intel.com> | 2016-12-07 00:49:31 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-12-13 01:20:27 +0300 |
| commit | 1cda28bb5b503bab734072d97a41b2e7eda6b6b9 (patch) | |
| tree | ea0369d13cead018e0dd94d0b9bbd7bf30a58513 /drivers/infiniband/hw/i40iw | |
| parent | f4a87ca12a1c203913a5cc889ec49b817a1f45fc (diff) | |
| download | linux-1cda28bb5b503bab734072d97a41b2e7eda6b6b9.tar.xz | |
i40iw: Fix QP flush to not hang on empty queues or failure
When flush QP and there are no pending work requests, signal completion
to unblock i40iw_drain_sq and i40iw_drain_rq which are waiting on
completion for iwqp->sq_drained and iwqp->sq_drained respectively.
Also, signal completion if flush QP fails to prevent the drain SQ or RQ
from being blocked indefintely.
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/i40iw')
| -rw-r--r-- | drivers/infiniband/hw/i40iw/i40iw.h | 9 | ||||
| -rw-r--r-- | drivers/infiniband/hw/i40iw/i40iw_hw.c | 26 |
2 files changed, 30 insertions, 5 deletions
diff --git a/drivers/infiniband/hw/i40iw/i40iw.h b/drivers/infiniband/hw/i40iw/i40iw.h index 51b828026b53..2aab85bbcbc7 100644 --- a/drivers/infiniband/hw/i40iw/i40iw.h +++ b/drivers/infiniband/hw/i40iw/i40iw.h @@ -112,9 +112,12 @@ #define I40IW_DRV_OPT_MCAST_LOGPORT_MAP 0x00000800 #define IW_HMC_OBJ_TYPE_NUM ARRAY_SIZE(iw_hmc_obj_types) -#define IW_CFG_FPM_QP_COUNT 32768 -#define I40IW_MAX_PAGES_PER_FMR 512 -#define I40IW_MIN_PAGES_PER_FMR 1 +#define IW_CFG_FPM_QP_COUNT 32768 +#define I40IW_MAX_PAGES_PER_FMR 512 +#define I40IW_MIN_PAGES_PER_FMR 1 +#define I40IW_CQP_COMPL_RQ_WQE_FLUSHED 2 +#define I40IW_CQP_COMPL_SQ_WQE_FLUSHED 3 +#define I40IW_CQP_COMPL_RQ_SQ_WQE_FLUSHED 4 #define I40IW_MTU_TO_MSS 40 #define I40IW_DEFAULT_MSS 1460 diff --git a/drivers/infiniband/hw/i40iw/i40iw_hw.c b/drivers/infiniband/hw/i40iw/i40iw_hw.c index b2854b11a240..4394a6713bdf 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_hw.c +++ b/drivers/infiniband/hw/i40iw/i40iw_hw.c @@ -622,6 +622,7 @@ enum i40iw_status_code i40iw_hw_flush_wqes(struct i40iw_device *iwdev, struct i40iw_qp_flush_info *hw_info; struct i40iw_cqp_request *cqp_request; struct cqp_commands_info *cqp_info; + struct i40iw_qp *iwqp = (struct i40iw_qp *)qp->back_qp; cqp_request = i40iw_get_cqp_request(&iwdev->cqp, wait); if (!cqp_request) @@ -636,9 +637,30 @@ enum i40iw_status_code i40iw_hw_flush_wqes(struct i40iw_device *iwdev, cqp_info->in.u.qp_flush_wqes.qp = qp; cqp_info->in.u.qp_flush_wqes.scratch = (uintptr_t)cqp_request; status = i40iw_handle_cqp_op(iwdev, cqp_request); - if (status) + if (status) { i40iw_pr_err("CQP-OP Flush WQE's fail"); - return status; + complete(&iwqp->sq_drained); + complete(&iwqp->rq_drained); + return status; + } + if (!cqp_request->compl_info.maj_err_code) { + switch (cqp_request->compl_info.min_err_code) { + case I40IW_CQP_COMPL_RQ_WQE_FLUSHED: + complete(&iwqp->sq_drained); + break; + case I40IW_CQP_COMPL_SQ_WQE_FLUSHED: + complete(&iwqp->rq_drained); + break; + case I40IW_CQP_COMPL_RQ_SQ_WQE_FLUSHED: + break; + default: + complete(&iwqp->sq_drained); + complete(&iwqp->rq_drained); + break; + } + } + + return 0; } /** |