[dpdk-dev] [PATCH v3] net/ixgbe: fix macsec setting

[Sun GuinanX <guinanx.sun@intel.com>]

macsec setting is not valid when port is stopped.
In order to make it valid, the patch changes the setting
to where port is started.

Fixes: 597f9fafe13b ("app/testpmd: convert to new Tx offloads API")
Cc: stable@dpdk.org

Signed-off-by: Sun GuinanX <guinanx.sun@intel.com>
---
v3:
* Deleted extra comments
* Modified the function name of the setting register
* Increased the logic used to set the register in the port start state
v2:
* Modified function name
* Refactored the rte_pmd_ixgbe_macsec_enable/disable function
* Modified structure name
* Modified the data type of a structure variable
---
 drivers/net/ixgbe/ixgbe_ethdev.c  | 160 ++++++++++++++++++++++++++++++
 drivers/net/ixgbe/ixgbe_ethdev.h  |  15 +++
 drivers/net/ixgbe/rte_pmd_ixgbe.c | 127 ++----------------------
 3 files changed, 182 insertions(+), 120 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index dbce7a80e..7ae7bc9ca 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -379,6 +379,11 @@ static int ixgbe_dev_udp_tunnel_port_del(struct rte_eth_dev *dev,
 static int ixgbe_filter_restore(struct rte_eth_dev *dev);
 static void ixgbe_l2_tunnel_conf(struct rte_eth_dev *dev);
 
+static void ixgbe_dev_macsec_ctrl_register_enable(struct rte_eth_dev *dev,
+		struct ixgbe_macsec_setting *macsec_contrl);
+
+static void ixgbe_dev_macsec_ctrl_register_disable(struct rte_eth_dev *dev);
+
 /*
  * Define VF Stats MACRO for Non "cleared on read" register
  */
@@ -2542,6 +2547,8 @@ 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 =
+		IXGBE_DEV_PRIVATE_TO_MACSEC_CTRL(dev->data->dev_private);
 
 	PMD_INIT_FUNC_TRACE();
 
@@ -2794,6 +2801,9 @@ ixgbe_dev_start(struct rte_eth_dev *dev)
 	 */
 	ixgbe_dev_link_update(dev, 0);
 
+	/* setup the macsec ctrl register */
+	ixgbe_dev_macsec_ctrl_register_enable(dev, macsec_ctrl);
+
 	return 0;
 
 error:
@@ -2825,6 +2835,9 @@ ixgbe_dev_stop(struct rte_eth_dev *dev)
 
 	PMD_INIT_FUNC_TRACE();
 
+	/* disable mecsec register */
+	ixgbe_dev_macsec_ctrl_register_disable(dev);
+
 	rte_eal_alarm_cancel(ixgbe_dev_setup_link_alarm_handler, dev);
 
 	/* disable interrupts */
@@ -8816,6 +8829,153 @@ ixgbe_clear_all_l2_tn_filter(struct rte_eth_dev *dev)
 	return 0;
 }
 
+/* macsec ctrl setup enable */
+void
+ixgbe_dev_macsec_setting_save(struct rte_eth_dev *dev,
+				struct ixgbe_macsec_setting *macsec_ctrl)
+{
+	struct ixgbe_macsec_setting *macsec =
+		IXGBE_DEV_PRIVATE_TO_MACSEC_CTRL(dev->data->dev_private);
+
+	macsec->encrypt_en = macsec_ctrl->encrypt_en;
+	macsec->replayprotect_en = macsec_ctrl->replayprotect_en;
+}
+
+/* macsec ctrl setup disable */
+void
+ixgbe_dev_macsec_setting_reset(struct rte_eth_dev *dev)
+{
+	struct ixgbe_macsec_setting *macsec =
+		IXGBE_DEV_PRIVATE_TO_MACSEC_CTRL(dev->data->dev_private);
+
+	macsec->encrypt_en = 0;
+	macsec->replayprotect_en = 0;
+}
+
+/* macsec ctrl register set */
+static void
+ixgbe_dev_macsec_ctrl_register_enable(struct rte_eth_dev *dev,
+				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);
+}
+
+/* macsec ctrl register set */
+static void
+ixgbe_dev_macsec_ctrl_register_disable(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);
+}
+
+
+
 RTE_PMD_REGISTER_PCI(net_ixgbe, rte_ixgbe_pmd);
 RTE_PMD_REGISTER_PCI_TABLE(net_ixgbe, pci_id_ixgbe_map);
 RTE_PMD_REGISTER_KMOD_DEP(net_ixgbe, "* igb_uio | uio_pci_generic | vfio-pci");
diff --git a/drivers/net/ixgbe/ixgbe_ethdev.h b/drivers/net/ixgbe/ixgbe_ethdev.h
index 6e9ed2e10..6aa2cdbbc 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.h
+++ b/drivers/net/ixgbe/ixgbe_ethdev.h
@@ -365,6 +365,12 @@ struct rte_flow {
 	void *rule;
 };
 
+/* MACsec Control structure */
+struct ixgbe_macsec_setting {
+	uint8_t encrypt_en;		/* encrypt enabled */
+	uint8_t replayprotect_en;	/* replayprotect enabled */
+};
+
 /*
  * Statistics counters collected by the MACsec
  */
@@ -471,6 +477,7 @@ struct ixgbe_adapter {
 	struct ixgbe_hw             hw;
 	struct ixgbe_hw_stats       stats;
 	struct ixgbe_macsec_stats   macsec_stats;
+	struct ixgbe_macsec_setting	macsec_ctrl;
 	struct ixgbe_hw_fdir_info   fdir;
 	struct ixgbe_interrupt      intr;
 	struct ixgbe_stat_mapping_registers stat_mappings;
@@ -523,6 +530,9 @@ int ixgbe_vf_representor_uninit(struct rte_eth_dev *ethdev);
 #define IXGBE_DEV_PRIVATE_TO_MACSEC_STATS(adapter) \
 	(&((struct ixgbe_adapter *)adapter)->macsec_stats)
 
+#define IXGBE_DEV_PRIVATE_TO_MACSEC_CTRL(adapter) \
+	(&((struct ixgbe_adapter *)adapter)->macsec_ctrl)
+
 #define IXGBE_DEV_PRIVATE_TO_INTR(adapter) \
 	(&((struct ixgbe_adapter *)adapter)->intr)
 
@@ -741,6 +751,11 @@ int ixgbe_action_rss_same(const struct rte_flow_action_rss *comp,
 int ixgbe_config_rss_filter(struct rte_eth_dev *dev,
 		struct ixgbe_rte_flow_rss_conf *conf, bool add);
 
+void ixgbe_dev_macsec_setting_save(struct rte_eth_dev *dev,
+		struct ixgbe_macsec_setting *macsec_ctrl);
+
+void ixgbe_dev_macsec_setting_reset(struct rte_eth_dev *dev);
+
 static inline int
 ixgbe_ethertype_filter_lookup(struct ixgbe_filter_info *filter_info,
 			      uint16_t ethertype)
diff --git a/drivers/net/ixgbe/rte_pmd_ixgbe.c b/drivers/net/ixgbe/rte_pmd_ixgbe.c
index 9514f2cf5..3a1474876 100644
--- a/drivers/net/ixgbe/rte_pmd_ixgbe.c
+++ b/drivers/net/ixgbe/rte_pmd_ixgbe.c
@@ -515,82 +515,18 @@ rte_pmd_ixgbe_set_vf_rate_limit(uint16_t port, uint16_t vf,
 int
 rte_pmd_ixgbe_macsec_enable(uint16_t port, uint8_t en, uint8_t rp)
 {
-	struct ixgbe_hw *hw;
 	struct rte_eth_dev *dev;
-	uint32_t ctrl;
+	struct ixgbe_macsec_setting macsec_setting;
 
 	RTE_ETH_VALID_PORTID_OR_ERR_RET(port, -ENODEV);
 
 	dev = &rte_eth_devices[port];
 
-	if (!is_ixgbe_supported(dev))
-		return -ENOTSUP;
-
-	hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	macsec_setting.encrypt_en = en;
+	macsec_setting.replayprotect_en = rp;
 
-	/* Stop the data paths */
-	if (ixgbe_disable_sec_rx_path(hw) != IXGBE_SUCCESS)
-		return -ENOTSUP;
-	/**
-	 * 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);
+	/* Enable macsec setup  */
+	ixgbe_dev_macsec_setting_save(dev, &macsec_setting);
 
 	return 0;
 }
@@ -598,63 +534,14 @@ rte_pmd_ixgbe_macsec_enable(uint16_t port, uint8_t en, uint8_t rp)
 int
 rte_pmd_ixgbe_macsec_disable(uint16_t port)
 {
-	struct ixgbe_hw *hw;
 	struct rte_eth_dev *dev;
-	uint32_t ctrl;
 
 	RTE_ETH_VALID_PORTID_OR_ERR_RET(port, -ENODEV);
 
 	dev = &rte_eth_devices[port];
 
-	if (!is_ixgbe_supported(dev))
-		return -ENOTSUP;
-
-	hw = IXGBE_DEV_PRIVATE_TO_HW(dev->data->dev_private);
-
-	/* Stop the data paths */
-	if (ixgbe_disable_sec_rx_path(hw) != IXGBE_SUCCESS)
-		return -ENOTSUP;
-	/**
-	 * 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);
+	/* Disable macsec setup  */
+	ixgbe_dev_macsec_setting_reset(dev);
 
 	return 0;
 }
-- 
2.17.1