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From: Fang TongHao <fangtonghao@sangfor.com.cn>
To: thomas@monjalon.net, ferruh.yigit@intel.com, arybchenko@solarflare.com
Cc: dev@dpdk.org, stable@dpdk.org, jia.guo@intel.com,
	cunming.liang@intel.com, qi.z.zhang@intel.com,
	jungle845943968@outlook.com,
	Fang TongHao <fangtonghao@sangfor.com.cn>
Subject: [dpdk-stable] [PATCH v2] Fixes: ethdev: secondary process change shared memory
Date: Mon, 13 Jan 2020 13:03:12 +0800	[thread overview]
Message-ID: <20200113050312.1506-1-fangtonghao@sangfor.com.cn> (raw)
In-Reply-To: <20200109122710.1362-1-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


  parent reply	other threads:[~2020-01-13  5:03 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-09 12:27 [dpdk-stable] [PATCH] ethdev: fix secondary process change share memory Fang TongHao
2020-01-10  7:30 ` Jeff Guo
2020-01-10  7:53   ` 方统浩50450
2020-01-13  5:03 ` Fang TongHao [this message]
2020-01-14 14:45   ` [dpdk-stable] [dpdk-dev] [PATCH v2] Fixes: ethdev: secondary process change shared memory Ferruh Yigit
2020-01-15  6:49     ` 方统浩50450
2020-01-15 18:35       ` Ferruh Yigit
2020-01-15 20:43         ` Thomas Monjalon
2020-01-16  7:43           ` Andrew Rybchenko
2020-01-16  9:04             ` Ferruh Yigit
2020-01-16 11:35               ` 方统浩50450
2020-01-16 12:18                 ` Ferruh Yigit
2020-01-17  2:11                   ` 方统浩50450
2020-01-16  9:00           ` Ferruh Yigit
2020-01-17  2:08   ` [dpdk-stable] [PATCH v3] " Fang TongHao
2020-01-17  8:33     ` Andrew Rybchenko
2020-01-17 17:58       ` [dpdk-stable] [dpdk-dev] " Ferruh Yigit

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