Re: [dpdk-dev] [PATCH v4] net/ixgbe: fix macsec setting

[Ye Xiaolong <xiaolong.ye@intel.com>]

Hi, Guinan

[snip]

On 10/30, Sun GuinanX wrote:
>+
>+void
>+ixgbe_dev_macsec_register_set(struct rte_eth_dev *dev,

I'd prefer to keep ixgbe_dev_macsec_register_enable since when it comes to 
HW register, `enable` is more accurate then `set` for this routine.  
And same for the below function, prefer to use disable, not reset.

Thanks,
Xiaolong

>+				struct ixgbe_macsec_setting *macsec_contrl)
>+{
>+	struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
>+	uint32_t ctrl;
>+	uint8_t en = (uint8_t)macsec_contrl->encrypt_en;
>+	uint8_t rp = (uint8_t)macsec_contrl->replayprotect_en;
>+
>+	/**
>+	 * Workaround:
>+	 * As no ixgbe_disable_sec_rx_path equivalent is
>+	 * implemented for tx in the base code, and we are
>+	 * not allowed to modify the base code in DPDK, so
>+	 * just call the hand-written one directly for now.
>+	 * The hardware support has been checked by
>+	 * ixgbe_disable_sec_rx_path().
>+	 */
>+	ixgbe_disable_sec_tx_path_generic(hw);
>+
>+	/* Enable Ethernet CRC (required by MACsec offload) */
>+	ctrl = IXGBE_READ_REG(hw, IXGBE_HLREG0);
>+	ctrl |= IXGBE_HLREG0_TXCRCEN | IXGBE_HLREG0_RXCRCSTRP;
>+	IXGBE_WRITE_REG(hw, IXGBE_HLREG0, ctrl);
>+
>+	/* Enable the TX and RX crypto engines */
>+	ctrl = IXGBE_READ_REG(hw, IXGBE_SECTXCTRL);
>+	ctrl &= ~IXGBE_SECTXCTRL_SECTX_DIS;
>+	IXGBE_WRITE_REG(hw, IXGBE_SECTXCTRL, ctrl);
>+
>+	ctrl = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL);
>+	ctrl &= ~IXGBE_SECRXCTRL_SECRX_DIS;
>+	IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, ctrl);
>+
>+	ctrl = IXGBE_READ_REG(hw, IXGBE_SECTXMINIFG);
>+	ctrl &= ~IXGBE_SECTX_MINSECIFG_MASK;
>+	ctrl |= 0x3;
>+	IXGBE_WRITE_REG(hw, IXGBE_SECTXMINIFG, ctrl);
>+
>+	/* Enable SA lookup */
>+	ctrl = IXGBE_READ_REG(hw, IXGBE_LSECTXCTRL);
>+	ctrl &= ~IXGBE_LSECTXCTRL_EN_MASK;
>+	ctrl |= en ? IXGBE_LSECTXCTRL_AUTH_ENCRYPT :
>+		     IXGBE_LSECTXCTRL_AUTH;
>+	ctrl |= IXGBE_LSECTXCTRL_AISCI;
>+	ctrl &= ~IXGBE_LSECTXCTRL_PNTHRSH_MASK;
>+	ctrl |= IXGBE_MACSEC_PNTHRSH & IXGBE_LSECTXCTRL_PNTHRSH_MASK;
>+	IXGBE_WRITE_REG(hw, IXGBE_LSECTXCTRL, ctrl);
>+
>+	ctrl = IXGBE_READ_REG(hw, IXGBE_LSECRXCTRL);
>+	ctrl &= ~IXGBE_LSECRXCTRL_EN_MASK;
>+	ctrl |= IXGBE_LSECRXCTRL_STRICT << IXGBE_LSECRXCTRL_EN_SHIFT;
>+	ctrl &= ~IXGBE_LSECRXCTRL_PLSH;
>+	if (rp)
>+		ctrl |= IXGBE_LSECRXCTRL_RP;
>+	else
>+		ctrl &= ~IXGBE_LSECRXCTRL_RP;
>+	IXGBE_WRITE_REG(hw, IXGBE_LSECRXCTRL, ctrl);
>+
>+	/* Start the data paths */
>+	ixgbe_enable_sec_rx_path(hw);
>+	/**
>+	 * Workaround:
>+	 * As no ixgbe_enable_sec_rx_path equivalent is
>+	 * implemented for tx in the base code, and we are
>+	 * not allowed to modify the base code in DPDK, so
>+	 * just call the hand-written one directly for now.
>+	 */
>+	ixgbe_enable_sec_tx_path_generic(hw);
>+}
>+
>+void
>+ixgbe_dev_macsec_register_reset(struct rte_eth_dev *dev)
>+{
>+	struct ixgbe_hw *hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
>+	uint32_t ctrl;
>+
>+	/**
>+	 * Workaround:
>+	 * As no ixgbe_disable_sec_rx_path equivalent is
>+	 * implemented for tx in the base code, and we are
>+	 * not allowed to modify the base code in DPDK, so
>+	 * just call the hand-written one directly for now.
>+	 * The hardware support has been checked by
>+	 * ixgbe_disable_sec_rx_path().
>+	 */
>+	ixgbe_disable_sec_tx_path_generic(hw);
>+
>+	/* Disable the TX and RX crypto engines */
>+	ctrl = IXGBE_READ_REG(hw, IXGBE_SECTXCTRL);
>+	ctrl |= IXGBE_SECTXCTRL_SECTX_DIS;
>+	IXGBE_WRITE_REG(hw, IXGBE_SECTXCTRL, ctrl);
>+
>+	ctrl = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL);
>+	ctrl |= IXGBE_SECRXCTRL_SECRX_DIS;
>+	IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, ctrl);
>+
>+	/* Disable SA lookup */
>+	ctrl = IXGBE_READ_REG(hw, IXGBE_LSECTXCTRL);
>+	ctrl &= ~IXGBE_LSECTXCTRL_EN_MASK;
>+	ctrl |= IXGBE_LSECTXCTRL_DISABLE;
>+	IXGBE_WRITE_REG(hw, IXGBE_LSECTXCTRL, ctrl);
>+
>+	ctrl = IXGBE_READ_REG(hw, IXGBE_LSECRXCTRL);
>+	ctrl &= ~IXGBE_LSECRXCTRL_EN_MASK;
>+	ctrl |= IXGBE_LSECRXCTRL_DISABLE << IXGBE_LSECRXCTRL_EN_SHIFT;
>+	IXGBE_WRITE_REG(hw, IXGBE_LSECRXCTRL, ctrl);
>+
>+	/* Start the data paths */
>+	ixgbe_enable_sec_rx_path(hw);
>+	/**
>+	 * Workaround:
>+	 * As no ixgbe_enable_sec_rx_path equivalent is
>+	 * implemented for tx in the base code, and we are
>+	 * not allowed to modify the base code in DPDK, so
>+	 * just call the hand-written one directly for now.
>+	 */
>+	ixgbe_enable_sec_tx_path_generic(hw);
>+}