[dpdk-dev] [PATCH v2] Fixes: ethdev: secondary process change shared memory

[Fang TongHao <fangtonghao@sangfor.com.cn>]

Secondary process calls “rte_eth_dev_pci_allocate”
function and enters rte_eth_copy_pci_info function
when initializing.Then it sets the value of struct
"rte_eth_dev_data.dev_flags" to zero and reset it,
but this struct is shared by primary process and
secondary process.To fix this bug,by adding an
if-statement to forbid the secondaryprocess changing
the above-mentioned value.

Signed-off-by: Fang TongHao <fangtonghao@sangfor.com.cn>
---
 lib/librte_ethdev/rte_ethdev_pci.h | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/lib/librte_ethdev/rte_ethdev_pci.h b/lib/librte_ethdev/rte_ethdev_pci.h
index ccdbb46ec..e7dae0545 100644
--- a/lib/librte_ethdev/rte_ethdev_pci.h
+++ b/lib/librte_ethdev/rte_ethdev_pci.h
@@ -60,14 +60,16 @@ rte_eth_copy_pci_info(struct rte_eth_dev *eth_dev,
 
 	eth_dev->intr_handle = &pci_dev->intr_handle;
 
-	eth_dev->data->dev_flags = 0;
-	if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
-		eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
-	if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_RMV)
-		eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_RMV;
-
-	eth_dev->data->kdrv = pci_dev->kdrv;
-	eth_dev->data->numa_node = pci_dev->device.numa_node;
+	if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
+		eth_dev->data->dev_flags = 0;
+		if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
+			eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC;
+		if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_RMV)
+			eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_RMV;
+
+		eth_dev->data->kdrv = pci_dev->kdrv;
+		eth_dev->data->numa_node = pci_dev->device.numa_node;
+	}
 }
 
 static inline int
-- 
2.24.1.windows.2