diff options
| author |   Tatyana Nikolova <tatyana.e.nikolova@intel.com> | 2022-04-25 13:17:01 -0500 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@nvidia.com> | 2022-05-02 11:10:33 -0300 |
| commit | 7b8943b821bafab492f43aafbd006b57c6b65845 (patch) | |
| tree | bd6aae0162b6e6db60f7752f67590cdb6e74cc07 /drivers/infiniband/hw/irdma | |
| parent | RDMA/rxe: Recheck the MR in when generating a READ reply (diff) | |
| download | linux-dev-7b8943b821bafab492f43aafbd006b57c6b65845.tar.xz linux-dev-7b8943b821bafab492f43aafbd006b57c6b65845.zip | |
RDMA/irdma: Flush iWARP QP if modified to ERR from RTR state
When connection establishment fails in iWARP mode, an app can drain the
QPs and hang because flush isn't issued when the QP is modified from RTR
state to error. Issue a flush in this case using function
irdma_cm_disconn().
Update irdma_cm_disconn() to do flush when cm_id is NULL, which is the
case when the QP is in RTR state and there is an error in the connection
establishment.
Fixes: b48c24c2d710 ("RDMA/irdma: Implement device supported verb APIs")
Link: https://lore.kernel.org/r/20220425181703.1634-2-shiraz.saleem@intel.com
Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/hw/irdma')
| -rw-r--r-- | drivers/infiniband/hw/irdma/cm.c | 16 | ||||
| -rw-r--r-- | drivers/infiniband/hw/irdma/verbs.c | 4 |
2 files changed, 7 insertions, 13 deletions
diff --git a/drivers/infiniband/hw/irdma/cm.c b/drivers/infiniband/hw/irdma/cm.c index a98d962e5efb..90b4113e7071 100644 --- a/drivers/infiniband/hw/irdma/cm.c +++ b/drivers/infiniband/hw/irdma/cm.c @@ -3462,12 +3462,6 @@ static void irdma_cm_disconn_true(struct irdma_qp *iwqp) } cm_id = iwqp->cm_id; - /* make sure we havent already closed this connection */ - if (!cm_id) { - spin_unlock_irqrestore(&iwqp->lock, flags); - return; - } - original_hw_tcp_state = iwqp->hw_tcp_state; original_ibqp_state = iwqp->ibqp_state; last_ae = iwqp->last_aeq; @@ -3489,11 +3483,11 @@ static void irdma_cm_disconn_true(struct irdma_qp *iwqp) disconn_status = -ECONNRESET; } - if ((original_hw_tcp_state == IRDMA_TCP_STATE_CLOSED || - original_hw_tcp_state == IRDMA_TCP_STATE_TIME_WAIT || - last_ae == IRDMA_AE_RDMAP_ROE_BAD_LLP_CLOSE || - last_ae == IRDMA_AE_BAD_CLOSE || - last_ae == IRDMA_AE_LLP_CONNECTION_RESET || iwdev->rf->reset)) { + if (original_hw_tcp_state == IRDMA_TCP_STATE_CLOSED || + original_hw_tcp_state == IRDMA_TCP_STATE_TIME_WAIT || + last_ae == IRDMA_AE_RDMAP_ROE_BAD_LLP_CLOSE || + last_ae == IRDMA_AE_BAD_CLOSE || + last_ae == IRDMA_AE_LLP_CONNECTION_RESET || iwdev->rf->reset || !cm_id) { issue_close = 1; iwqp->cm_id = NULL; qp->term_flags = 0; diff --git a/drivers/infiniband/hw/irdma/verbs.c b/drivers/infiniband/hw/irdma/verbs.c index 46f475394af5..52f3e88f8569 100644 --- a/drivers/infiniband/hw/irdma/verbs.c +++ b/drivers/infiniband/hw/irdma/verbs.c @@ -1618,13 +1618,13 @@ int irdma_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask, if (issue_modify_qp && iwqp->ibqp_state > IB_QPS_RTS) { if (dont_wait) { - if (iwqp->cm_id && iwqp->hw_tcp_state) { + if (iwqp->hw_tcp_state) { spin_lock_irqsave(&iwqp->lock, flags); iwqp->hw_tcp_state = IRDMA_TCP_STATE_CLOSED; iwqp->last_aeq = IRDMA_AE_RESET_SENT; spin_unlock_irqrestore(&iwqp->lock, flags); - irdma_cm_disconn(iwqp); } + irdma_cm_disconn(iwqp); } else { int close_timer_started; |