diff mbox series

raw/ntb: clear all valid DB bits when DB init

Message ID 20220209043528.3694747-1-junfeng.guo@intel.com (mailing list archive)
State Superseded, archived
Delegated to: Thomas Monjalon
Headers
Series raw/ntb: clear all valid DB bits when DB init |

Checks

Context Check Description
ci/checkpatch warning coding style issues
ci/Intel-compilation success Compilation OK
ci/intel-Testing success Testing PASS

Commit Message

Junfeng Guo Feb. 9, 2022, 4:35 a.m. UTC 
  Before registering the doorbell interrupt handler callback function,
all the valid doorbell bits within the NTB private data struct should
be cleared to aviod the confusion of the handshake timing sequence
diagram when setting up the NTB connection in back-to-back mode.

Fixes: 62012a76811e ("raw/ntb: add handshake process")
Cc: stable@dpdk.org

Signed-off-by: Junfeng Guo <junfeng.guo@intel.com>
---
 drivers/raw/ntb/ntb.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/drivers/raw/ntb/ntb.c b/drivers/raw/ntb/ntb.c
index 46ac02e5ab..6f15b13585 100644
--- a/drivers/raw/ntb/ntb.c
+++ b/drivers/raw/ntb/ntb.c
@@ -1398,6 +1398,8 @@  ntb_init_hw(struct rte_rawdev *dev, struct rte_pci_device *pci_dev)
 
 	/* Init doorbell. */
 	hw->db_valid_mask = RTE_LEN2MASK(hw->db_cnt, uint64_t);
+	/* Clear all valid doorbell bits before registering intr handler*/
+	(*hw->ntb_ops->db_clear)(dev, hw->db_valid_mask);
 
 	intr_handle = pci_dev->intr_handle;
 	/* Register callback func to eal lib */