答复: [[SPF Failed]][PATCH v2] net/i40e: rework maximum frame size configuration

[韩爽 <hanshuang@qianxin.com>]

Why i40e_dev_link_update must be called with wait_to_complete when link interrupt is enabled ?
I think it's may have the same issue as ice_link_update, please check: https://patches.dpdk.org/project/dpdk/patch/1669207333-8769-1-git-send-email-hanshuang87@gmail.com/

-----邮件原件-----
发件人: Simei Su <simei.su@intel.com> 
发送时间: 2023年1月31日 14:52
收件人: beilei.xing@intel.com; yuying.zhang@intel.com; david.marchand@redhat.com
抄送: dev@dpdk.org; qi.z.zhang@intel.com; qiming.yang@intel.com; Simei Su <simei.su@intel.com>; stable@dpdk.org
主题: [[SPF Failed]][PATCH v2] net/i40e: rework maximum frame size configuration

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邮件原文如下：

This patch removes unnecessary link status check and adds link update.

Fixes: a4ba77367923 ("net/i40e: enable maximum frame size at port level")
Fixes: 2184f7cdeeaa ("net/i40e: fix max frame size config at port level")
Fixes: 719469f13b11 ("net/i40e: fix jumbo frame Rx with X722")
Cc: stable@dpdk.org

Signed-off-by: Simei Su <simei.su@intel.com>
---
v2:
* Refine commit log.
* Add link update.

 drivers/net/i40e/i40e_ethdev.c | 54 +++++++++++-------------------------------
 1 file changed, 14 insertions(+), 40 deletions(-)

diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c index 7726a89d..a3100ec 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -387,7 +387,6 @@ static int i40e_set_default_mac_addr(struct rte_eth_dev *dev,
 				      struct rte_ether_addr *mac_addr);
 
 static int i40e_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu); -static void i40e_set_mac_max_frame(struct rte_eth_dev *dev, uint16_t size);
 
 static int i40e_ethertype_filter_convert(
 	const struct rte_eth_ethertype_filter *input, @@ -2467,8 +2466,18 @@ i40e_dev_start(struct rte_eth_dev *dev)
 			    "please call hierarchy_commit() "
 			    "before starting the port");
 
-	max_frame_size = dev->data->mtu + I40E_ETH_OVERHEAD;
-	i40e_set_mac_max_frame(dev, max_frame_size);
+	i40e_dev_link_update(dev, 1);
+
+	max_frame_size = dev->data->mtu ?
+		dev->data->mtu + I40E_ETH_OVERHEAD :
+		I40E_FRAME_SIZE_MAX;
+
+	/* Set the max frame size to HW*/
+	ret = i40e_aq_set_mac_config(hw, max_frame_size, TRUE, false, 0, NULL);
+	if (ret) {
+		PMD_DRV_LOG(ERR, "Fail to set mac config");
+		return ret;
+	}
 
 	return I40E_SUCCESS;
 
@@ -2809,9 +2818,6 @@ i40e_dev_set_link_down(struct rte_eth_dev *dev)
 	return i40e_phy_conf_link(hw, abilities, speed, false);  }
 
-#define CHECK_INTERVAL             100  /* 100ms */
-#define MAX_REPEAT_TIME            10  /* 1s (10 * 100ms) in total */
-
 static __rte_always_inline void
 update_link_reg(struct i40e_hw *hw, struct rte_eth_link *link)  { @@ -2878,6 +2884,8 @@ static __rte_always_inline void  update_link_aq(struct i40e_hw *hw, struct rte_eth_link *link,
 	bool enable_lse, int wait_to_complete)  {
+#define CHECK_INTERVAL             100  /* 100ms */
+#define MAX_REPEAT_TIME            10  /* 1s (10 * 100ms) in total */
 	uint32_t rep_cnt = MAX_REPEAT_TIME;
 	struct i40e_link_status link_status;
 	int status;
@@ -12123,40 +12131,6 @@ i40e_cloud_filter_qinq_create(struct i40e_pf *pf)
 	return ret;
 }
 
-static void
-i40e_set_mac_max_frame(struct rte_eth_dev *dev, uint16_t size) -{
-	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
-	uint32_t rep_cnt = MAX_REPEAT_TIME;
-	struct rte_eth_link link;
-	enum i40e_status_code status;
-	bool can_be_set = true;
-
-	/*
-	 * I40E_MEDIA_TYPE_BASET link up can be ignored
-	 * I40E_MEDIA_TYPE_BASET link down that hw->phy.media_type
-	 * is I40E_MEDIA_TYPE_UNKNOWN
-	 */
-	if (hw->phy.media_type != I40E_MEDIA_TYPE_BASET &&
-	    hw->phy.media_type != I40E_MEDIA_TYPE_UNKNOWN) {
-		do {
-			update_link_reg(hw, &link);
-			if (link.link_status)
-				break;
-			rte_delay_ms(CHECK_INTERVAL);
-		} while (--rep_cnt);
-		can_be_set = !!link.link_status;
-	}
-
-	if (can_be_set) {
-		status = i40e_aq_set_mac_config(hw, size, TRUE, 0, false, NULL);
-		if (status != I40E_SUCCESS)
-			PMD_DRV_LOG(ERR, "Failed to set max frame size at port level");
-	} else {
-		PMD_DRV_LOG(ERR, "Set max frame size at port level not applicable on link down");
-	}
-}
-
 RTE_LOG_REGISTER_SUFFIX(i40e_logtype_init, init, NOTICE);  RTE_LOG_REGISTER_SUFFIX(i40e_logtype_driver, driver, NOTICE);  #ifdef RTE_ETHDEV_DEBUG_RX
--
2.9.5