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From: Yuan Wang <yuanx.wang@intel.com>
To: maxime.coquelin@redhat.com, chenbo.xia@intel.com
Cc: dev@dpdk.org, jiayu.hu@intel.com, xingguang.he@intel.com,
	yuanx.wang@intel.com
Subject: [PATCH] net/virtio: unmap PCI device in secondary process
Date: Thu, 21 Apr 2022 19:15:37 +0800	[thread overview]
Message-ID: <20220421111537.935333-1-yuanx.wang@intel.com> (raw)

In multi-process, the secondary process will remap PCI during
initialization, but the mapping is not removed in the uninit path,
the device is not closed, and the device busy error will be reported
when the device is hotplugged.

This patch unmap PCI device at secondary process uninitialization
based on virtio_rempa_pci().

Fixes: 36a7a2e7a53 ("net/virtio: move PCI device init in dedicated file")

Signed-off-by: Yuan Wang <yuanx.wang@intel.com>
---
 drivers/net/virtio/virtio_pci_ethdev.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/net/virtio/virtio_pci_ethdev.c b/drivers/net/virtio/virtio_pci_ethdev.c
index 54645dc62e..1f6bdeddda 100644
--- a/drivers/net/virtio/virtio_pci_ethdev.c
+++ b/drivers/net/virtio/virtio_pci_ethdev.c
@@ -122,10 +122,20 @@ static int
 eth_virtio_pci_uninit(struct rte_eth_dev *eth_dev)
 {
 	int ret;
+	struct virtio_pci_dev *dev;
+	struct virtio_hw *hw;
 	PMD_INIT_FUNC_TRACE();
 
-	if (rte_eal_process_type() == RTE_PROC_SECONDARY)
+	if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
+		dev = eth_dev->data->dev_private;
+		hw = &dev->hw;
+
+		if (dev->modern)
+			rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(eth_dev));
+		else
+			vtpci_legacy_ioport_unmap(hw);
 		return 0;
+	}
 
 	ret = virtio_dev_stop(eth_dev);
 	virtio_dev_close(eth_dev);
-- 
2.25.1


             reply	other threads:[~2022-04-21  3:25 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-21 11:15 Yuan Wang [this message]
2022-04-22  9:25 ` Ling, WeiX
2022-05-30  2:49 ` Xia, Chenbo
2022-05-30 10:03   ` Wang, YuanX
2022-06-06 15:55 ` [PATCH v2] " Yuan Wang
2022-06-06  9:24   ` Ling, WeiX
2022-06-20  3:37   ` Xia, Chenbo
2022-06-20  9:53     ` Wang, YuanX

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