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| author | Dave Jiang <dave.jiang@intel.com> | 2023-08-22 09:04:45 -0700 |
|---|---|---|
| committer | Jon Mason <jdmason@kudzu.us> | 2023-08-22 12:38:19 -0400 |
| commit | cc79bd2738c2d40aba58b2be6ce47dc0e471df0e (patch) | |
| tree | a9966e1ecfd14a131fd11d8a7e62d573cdd1afe0 /drivers/ntb | |
| parent | 28e70ed9d0fab935f78b565d9c026585559b86a4 (diff) | |
| download | linux-cc79bd2738c2d40aba58b2be6ce47dc0e471df0e.tar.gz linux-cc79bd2738c2d40aba58b2be6ce47dc0e471df0e.tar.bz2 linux-cc79bd2738c2d40aba58b2be6ce47dc0e471df0e.zip | |
ntb: Clean up tx tail index on link down
The tx tail index is not reset when the link goes down. This causes the
tail index to go out of sync when the link goes down and comes back up.
Refactor the ntb_qp_link_down_reset() and reset the tail index as well.
Fixes: 2849b5d70641 ("NTB: Reset transport QP link stats on down")
Reported-by: Yuan Y Lu <yuan.y.lu@intel.com>
Tested-by: Yuan Y Lu <yuan.y.lu@intel.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Diffstat (limited to 'drivers/ntb')
| -rw-r--r-- | drivers/ntb/ntb_transport.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/ntb/ntb_transport.c b/drivers/ntb/ntb_transport.c index 2abd2235bbca..3e7a6a8a9c87 100644 --- a/drivers/ntb/ntb_transport.c +++ b/drivers/ntb/ntb_transport.c @@ -909,7 +909,7 @@ static int ntb_set_mw(struct ntb_transport_ctx *nt, int num_mw, return 0; } -static void ntb_qp_link_down_reset(struct ntb_transport_qp *qp) +static void ntb_qp_link_context_reset(struct ntb_transport_qp *qp) { qp->link_is_up = false; qp->active = false; @@ -932,6 +932,13 @@ static void ntb_qp_link_down_reset(struct ntb_transport_qp *qp) qp->tx_async = 0; } +static void ntb_qp_link_down_reset(struct ntb_transport_qp *qp) +{ + ntb_qp_link_context_reset(qp); + if (qp->remote_rx_info) + qp->remote_rx_info->entry = qp->rx_max_entry - 1; +} + static void ntb_qp_link_cleanup(struct ntb_transport_qp *qp) { struct ntb_transport_ctx *nt = qp->transport; @@ -1174,7 +1181,7 @@ static int ntb_transport_init_queue(struct ntb_transport_ctx *nt, qp->ndev = nt->ndev; qp->client_ready = false; qp->event_handler = NULL; - ntb_qp_link_down_reset(qp); + ntb_qp_link_context_reset(qp); if (mw_num < qp_count % mw_count) num_qps_mw = qp_count / mw_count + 1; |