[dpdk-dev] [PATCH] bus/pci/windows: support for PCI scan allowed and blocked lists

Khoa To khot at linux.microsoft.com
Thu Feb 18 06:40:05 CET 2021


From: Khoa To <khot at microsoft.com>

EAL -a and -b options are used to specify which PCI devices are explicitly allowed or blocked during PCI bus scan.  This evaluation is missing in the Windows implementation of rte_pci_scan.
This patch provides this missing functionality, so that apps can specify which NetUIO devices to ignore during PCI bus scan.

Signed-off-by: Khoa To <khot at microsoft.com>
---
 drivers/bus/pci/windows/pci.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/bus/pci/windows/pci.c b/drivers/bus/pci/windows/pci.c
index f66258452..0bba05eb4 100644
--- a/drivers/bus/pci/windows/pci.c
+++ b/drivers/bus/pci/windows/pci.c
@@ -396,6 +396,7 @@ rte_pci_scan(void)
 	DWORD device_index = 0, found_device = 0;
 	HDEVINFO dev_info;
 	SP_DEVINFO_DATA device_info_data;
+	struct rte_pci_addr addr;
 
 	/* for debug purposes, PCI can be disabled */
 	if (!rte_eal_has_pci())
@@ -420,6 +421,13 @@ rte_pci_scan(void)
 		    &GUID_DEVCLASS_NET) ||
 			IsEqualGUID(&(device_info_data.ClassGuid),
 			    &GUID_DEVCLASS_NETUIO)) {
+
+			if (get_device_pci_address(dev_info, &device_info_data, &addr) != 0)
+				continue;
+
+			if (rte_pci_ignore_device(&addr))
+				continue;
+
 			ret = pci_scan_one(dev_info, &device_info_data);
 			if (ret == ERROR_SUCCESS)
 				found_device++;
-- 
2.29.0.vfs.0.0



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