[dpdk-dev] [PATCH v3 2/3] net/iavf: enable PCI bus master after reset

Haiyue Wang haiyue.wang at intel.com
Fri Apr 23 13:40:00 CEST 2021


The VF reset can be triggerred by the PF reset event, in this case, the
PCI bus master will be cleared, then the VF is not allowed to issue any
Memory or I/O Requests.

So after the reset event is detected, always enable the PCI bus master.

Signed-off-by: Haiyue Wang <haiyue.wang at intel.com>
Tested-by: Qi Zhang <qi.z.zhang at intel.com>
---
 drivers/net/iavf/iavf_ethdev.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/iavf/iavf_ethdev.c b/drivers/net/iavf/iavf_ethdev.c
index d523a0618..8c924d21b 100644
--- a/drivers/net/iavf/iavf_ethdev.c
+++ b/drivers/net/iavf/iavf_ethdev.c
@@ -2255,6 +2255,9 @@ iavf_dev_close(struct rte_eth_dev *dev)
 	rte_free(vf->aq_resp);
 	vf->aq_resp = NULL;
 
+	if (vf->vf_reset)
+		rte_pci_enable_bus_master(pci_dev);
+
 	vf->vf_reset = false;
 
 	return ret;
-- 
2.31.1



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