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From: Shougang Wang <shougangx.wang@intel.com>
To: dev@dpdk.org
Cc: qiming.yang@intel.com, beilei.xing@intel.com,
	Shougang Wang <shougangx.wang@intel.com>,
	stable@dpdk.org
Subject: [dpdk-dev] [PATCH] net/i40e: fix DCB init issue
Date: Thu,  5 Mar 2020 08:40:37 +0000	[thread overview]
Message-ID: <20200305084037.69571-1-shougangx.wang@intel.com> (raw)

Stopping lldp is necessary for DPDK, but it will cause DCB init failed.
For kernel shared code, the prerequisite for successful initialization
of DCB is that LLDP is enabled. This patch starts lldp before DCB init
and stops it when finish init.

Fixes: a8e84b22bd55 ("net/i40e/base: support persistent LLDP")
Cc: stable@dpdk.org

Signed-off-by: Shougang Wang <shougangx.wang@intel.com>
---
 drivers/net/i40e/i40e_ethdev.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 9fbda1c34..9f37662f8 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -11669,11 +11669,9 @@ i40e_dcb_init_configure(struct rte_eth_dev *dev, bool sw_dcb)
 	 * LLDP MIB change event.
 	 */
 	if (sw_dcb == TRUE) {
-		if (i40e_need_stop_lldp(dev)) {
-			ret = i40e_aq_stop_lldp(hw, TRUE, TRUE, NULL);
-			if (ret != I40E_SUCCESS)
-				PMD_INIT_LOG(DEBUG, "Failed to stop lldp");
-		}
+		ret = i40e_aq_start_lldp(hw, true, NULL);
+		if (ret != I40E_SUCCESS)
+			PMD_INIT_LOG(DEBUG, "Failed to start lldp");
 
 		ret = i40e_init_dcb(hw, true);
 		/* If lldp agent is stopped, the return value from
@@ -11718,6 +11716,12 @@ i40e_dcb_init_configure(struct rte_eth_dev *dev, bool sw_dcb)
 				ret, hw->aq.asq_last_status);
 			return -ENOTSUP;
 		}
+
+		if (i40e_need_stop_lldp(dev)) {
+			ret = i40e_aq_stop_lldp(hw, true, true, NULL);
+			if (ret != I40E_SUCCESS)
+				PMD_INIT_LOG(DEBUG, "Failed to stop lldp");
+		}
 	} else {
 		ret = i40e_aq_start_lldp(hw, true, NULL);
 		if (ret != I40E_SUCCESS)
-- 
2.17.1


             reply	other threads:[~2020-03-05  8:46 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-05  8:40 Shougang Wang [this message]
2020-03-05  9:06 ` Zhang, Qi Z
2020-03-05 10:42 ` [dpdk-dev] [PATCH v2] " Shougang Wang
2020-03-06  8:13   ` Ye Xiaolong

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