[dpdk-dev] [PATCH v4 10/17] net/i40e/base: add support for switch parameters

[Jingjing Wu <jingjing.wu@intel.com>]

Adds double VLAN tagging ethertype fields to Set Switch Parameters AQ
command.  These were added in firmware API 1.7.

Callers of i40e_aq_set_switch_config() can specify the ethertypes to
use by filling out the corresponding fields in struct i40e_hw.

Signed-off-by: Jingjing Wu <jingjing.wu@intel.com>
---
 drivers/net/i40e/base/i40e_adminq.c     |  6 ++++++
 drivers/net/i40e/base/i40e_adminq_cmd.h | 17 ++++++++++++++++-
 drivers/net/i40e/base/i40e_common.c     |  6 +++++-
 drivers/net/i40e/base/i40e_type.h       |  6 ++++++
 4 files changed, 33 insertions(+), 2 deletions(-)

diff --git a/drivers/net/i40e/base/i40e_adminq.c b/drivers/net/i40e/base/i40e_adminq.c
index a60292a..19871c7 100644
--- a/drivers/net/i40e/base/i40e_adminq.c
+++ b/drivers/net/i40e/base/i40e_adminq.c
@@ -682,6 +682,12 @@ enum i40e_status_code i40e_init_adminq(struct i40e_hw *hw)
 			   &oem_lo);
 	hw->nvm.oem_ver = ((u32)oem_hi << 16) | oem_lo;
 
+	/* The ability to RX (not drop) 802.1ad frames was added in API 1.7 */
+	if ((hw->aq.api_maj_ver > 1) ||
+	    ((hw->aq.api_maj_ver == 1) &&
+	     (hw->aq.api_min_ver >= 7)))
+		hw->flags |= I40E_HW_FLAG_802_1AD_CAPABLE;
+
 	if (hw->aq.api_maj_ver > I40E_FW_API_VERSION_MAJOR) {
 		ret_code = I40E_ERR_FIRMWARE_API_VERSION;
 		goto init_adminq_free_arq;
diff --git a/drivers/net/i40e/base/i40e_adminq_cmd.h b/drivers/net/i40e/base/i40e_adminq_cmd.h
index dd9fb55..c36da2a 100644
--- a/drivers/net/i40e/base/i40e_adminq_cmd.h
+++ b/drivers/net/i40e/base/i40e_adminq_cmd.h
@@ -787,7 +787,22 @@ struct i40e_aqc_set_switch_config {
 #define I40E_AQ_SET_SWITCH_CFG_L2_FILTER	0x0002
 #define I40E_AQ_SET_SWITCH_CFG_HW_ATR_EVICT	0x0004
 	__le16	valid_flags;
-	u8	reserved[12];
+	/* The ethertype in switch_tag is dropped on ingress and used
+	 * internally by the switch. Set this to zero for the default
+	 * of 0x88a8 (802.1ad). Should be zero for firmware API
+	 * versions lower than 1.7.
+	 */
+	__le16	switch_tag;
+	/* The ethertypes in first_tag and second_tag are used to
+	 * match the outer and inner VLAN tags (respectively) when HW
+	 * double VLAN tagging is enabled via the set port parameters
+	 * AQ command. Otherwise these are both ignored. Set them to
+	 * zero for their defaults of 0x8100 (802.1Q). Should be zero
+	 * for firmware API versions lower than 1.7.
+	 */
+	__le16	first_tag;
+	__le16	second_tag;
+	u8	reserved[6];
 };
 
 I40E_CHECK_CMD_LENGTH(i40e_aqc_set_switch_config);
diff --git a/drivers/net/i40e/base/i40e_common.c b/drivers/net/i40e/base/i40e_common.c
index 9895a77..b4901ef 100644
--- a/drivers/net/i40e/base/i40e_common.c
+++ b/drivers/net/i40e/base/i40e_common.c
@@ -2695,7 +2695,11 @@ enum i40e_status_code i40e_aq_set_switch_config(struct i40e_hw *hw,
 					  i40e_aqc_opc_set_switch_config);
 	scfg->flags = CPU_TO_LE16(flags);
 	scfg->valid_flags = CPU_TO_LE16(valid_flags);
-
+	if (hw->flags & I40E_HW_FLAG_802_1AD_CAPABLE) {
+		scfg->switch_tag = CPU_TO_LE16(hw->switch_tag);
+		scfg->first_tag = CPU_TO_LE16(hw->first_tag);
+		scfg->second_tag = CPU_TO_LE16(hw->second_tag);
+	}
 	status = i40e_asq_send_command(hw, &desc, NULL, 0, cmd_details);
 
 	return status;
diff --git a/drivers/net/i40e/base/i40e_type.h b/drivers/net/i40e/base/i40e_type.h
index 6ca1a0f..152b4a7 100644
--- a/drivers/net/i40e/base/i40e_type.h
+++ b/drivers/net/i40e/base/i40e_type.h
@@ -700,8 +700,14 @@ struct i40e_hw {
 	u16 wol_proxy_vsi_seid;
 
 #define I40E_HW_FLAG_AQ_SRCTL_ACCESS_ENABLE BIT_ULL(0)
+#define I40E_HW_FLAG_802_1AD_CAPABLE        BIT_ULL(1)
 	u64 flags;
 
+	/* Used in set switch config AQ command */
+	u16 switch_tag;
+	u16 first_tag;
+	u16 second_tag;
+
 	/* debug mask */
 	u32 debug_mask;
 	char err_str[16];
-- 
2.4.11