[dpdk-dev] [PATCH v2] net/ixgbe: fix QoS performance drop issue

[Ye Xiaolong]

On 11/21, Shougang Wang wrote:
>Currently macsec offload will be enabled all the time
>when device start. It will cause QoS sample application
>performance drop issue. This patch add check before this
>feature enabled.
>
>Fixes: 50556c88104c ("net/ixgbe: fix MACsec setting")
>
>Signed-off-by: Shougang Wang <shougangx.wang at intel.com>
>---
> drivers/net/ixgbe/ixgbe_ethdev.c  | 14 ++++++++------
> drivers/net/ixgbe/ixgbe_ethdev.h  |  1 +
> drivers/net/ixgbe/rte_pmd_ixgbe.c |  1 +
> 3 files changed, 10 insertions(+), 6 deletions(-)
>
>diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
>index 8c1caac18..aeb82d1c8 100644
>--- a/drivers/net/ixgbe/ixgbe_ethdev.c
>+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
>@@ -1095,6 +1095,8 @@ eth_ixgbe_dev_init(struct rte_eth_dev *eth_dev, void *init_params __rte_unused)
> 
> 	PMD_INIT_FUNC_TRACE();
> 
>+	ixgbe_dev_macsec_setting_reset(eth_dev);
>+
> 	eth_dev->dev_ops = &ixgbe_eth_dev_ops;
> 	eth_dev->rx_pkt_burst = &ixgbe_recv_pkts;
> 	eth_dev->tx_pkt_burst = &ixgbe_xmit_pkts;
>@@ -2545,7 +2547,7 @@ ixgbe_dev_start(struct rte_eth_dev *dev)
> 	uint32_t *link_speeds;
> 	struct ixgbe_tm_conf *tm_conf =
> 		IXGBE_DEV_PRIVATE_TO_TM_CONF(dev->data->dev_private);
>-	struct ixgbe_macsec_setting *macsec_ctrl =
>+	struct ixgbe_macsec_setting *macsec_setting =
> 		IXGBE_DEV_PRIVATE_TO_MACSEC_SETTING(dev->data->dev_private);
> 
> 	PMD_INIT_FUNC_TRACE();
>@@ -2799,8 +2801,9 @@ ixgbe_dev_start(struct rte_eth_dev *dev)
> 	 */
> 	ixgbe_dev_link_update(dev, 0);
> 
>-	/* setup the macsec ctrl register */
>-	ixgbe_dev_macsec_register_enable(dev, macsec_ctrl);
>+	/* setup the macsec setting register */
>+	if (macsec_setting->offload_en)
>+		ixgbe_dev_macsec_register_enable(dev, macsec_setting);
> 
> 	return 0;
> 
>@@ -2833,9 +2836,6 @@ ixgbe_dev_stop(struct rte_eth_dev *dev)
> 
> 	PMD_INIT_FUNC_TRACE();
> 
>-	/* disable mecsec register */
>-	ixgbe_dev_macsec_register_disable(dev);
>-
> 	rte_eal_alarm_cancel(ixgbe_dev_setup_link_alarm_handler, dev);
> 
> 	/* disable interrupts */
>@@ -8843,6 +8843,7 @@ ixgbe_dev_macsec_setting_save(struct rte_eth_dev *dev,
> 	struct ixgbe_macsec_setting *macsec =
> 		IXGBE_DEV_PRIVATE_TO_MACSEC_SETTING(dev->data->dev_private);
> 
>+	macsec->offload_en = macsec_setting->offload_en;
> 	macsec->encrypt_en = macsec_setting->encrypt_en;
> 	macsec->replayprotect_en = macsec_setting->replayprotect_en;
> }
>@@ -8853,6 +8854,7 @@ ixgbe_dev_macsec_setting_reset(struct rte_eth_dev *dev)
> 	struct ixgbe_macsec_setting *macsec =
> 		IXGBE_DEV_PRIVATE_TO_MACSEC_SETTING(dev->data->dev_private);
> 
>+	macsec->offload_en = 0;
> 	macsec->encrypt_en = 0;
> 	macsec->replayprotect_en = 0;
> }
>diff --git a/drivers/net/ixgbe/ixgbe_ethdev.h b/drivers/net/ixgbe/ixgbe_ethdev.h
>index 5da6923a1..76a1b9d18 100644
>--- a/drivers/net/ixgbe/ixgbe_ethdev.h
>+++ b/drivers/net/ixgbe/ixgbe_ethdev.h
>@@ -366,6 +366,7 @@ struct rte_flow {
> };
> 
> struct ixgbe_macsec_setting {
>+	uint8_t offload_en;
> 	uint8_t encrypt_en;
> 	uint8_t replayprotect_en;
> };
>diff --git a/drivers/net/ixgbe/rte_pmd_ixgbe.c b/drivers/net/ixgbe/rte_pmd_ixgbe.c
>index 073fe1e23..8bcaded6e 100644
>--- a/drivers/net/ixgbe/rte_pmd_ixgbe.c
>+++ b/drivers/net/ixgbe/rte_pmd_ixgbe.c
>@@ -522,6 +522,7 @@ rte_pmd_ixgbe_macsec_enable(uint16_t port, uint8_t en, uint8_t rp)
> 
> 	dev = &rte_eth_devices[port];
> 
>+	macsec_setting.offload_en = 1;
> 	macsec_setting.encrypt_en = en;
> 	macsec_setting.replayprotect_en = rp;
> 
>-- 
>2.17.1
>

Applied to dpdk-next-net-intel, Thanks.