qed: Add support for query/config dcbx.

Query API reads the dcbx data from the device shared memory and return it
to the caller. The config API configures the user provided dcbx values on
the device, and initiates the dcbx negotiation with the peer.
Signed-off-by: Sudarsana Reddy Kalluru <sudarsana.kalluru@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/qed/qed_dcbx.h

@@ -33,6 +33,24 @@ struct qed_dcbx_app_data {
 	u8 tc;			/* Traffic Class */
 };
 
+#ifdef CONFIG_DCB
+#define QED_DCBX_VERSION_DISABLED       0
+#define QED_DCBX_VERSION_IEEE           1
+#define QED_DCBX_VERSION_CEE            2
+
+struct qed_dcbx_set {
+#define QED_DCBX_OVERRIDE_STATE	        BIT(0)
+#define QED_DCBX_OVERRIDE_PFC_CFG       BIT(1)
+#define QED_DCBX_OVERRIDE_ETS_CFG       BIT(2)
+#define QED_DCBX_OVERRIDE_APP_CFG       BIT(3)
+#define QED_DCBX_OVERRIDE_DSCP_CFG      BIT(4)
+	u32 override_flags;
+	bool enabled;
+	struct qed_dcbx_admin_params config;
+	u32 ver_num;
+};
+#endif
+
 struct qed_dcbx_results {
 	bool dcbx_enabled;
 	u8 pf_id;
@@ -55,6 +73,9 @@ struct qed_dcbx_info {
 	struct qed_dcbx_results results;
 	struct dcbx_mib operational;
 	struct dcbx_mib remote;
+#ifdef CONFIG_DCB
+	struct qed_dcbx_set set;
+#endif
 	u8 dcbx_cap;
 };
 
@@ -67,6 +88,13 @@ struct qed_dcbx_mib_meta_data {
 	u32 addr;
 };
 
+#ifdef CONFIG_DCB
+int qed_dcbx_get_config_params(struct qed_hwfn *, struct qed_dcbx_set *);
+
+int qed_dcbx_config_params(struct qed_hwfn *,
+			   struct qed_ptt *, struct qed_dcbx_set *, bool);
+#endif
+
 /* QED local interface routines */
 int
 qed_dcbx_mib_update_event(struct qed_hwfn *,

drivers/net/ethernet/qlogic/qed/qed_hsi.h

@@ -7244,6 +7244,9 @@ struct public_drv_mb {
 #define DRV_MB_PARAM_CFG_VF_MSIX_VF_ID_MASK	0x000000FF
 #define DRV_MB_PARAM_CFG_VF_MSIX_SB_NUM_SHIFT	8
 #define DRV_MB_PARAM_CFG_VF_MSIX_SB_NUM_MASK	0x0000FF00
+#define DRV_MB_PARAM_LLDP_SEND_MASK		0x00000001
+#define DRV_MB_PARAM_LLDP_SEND_SHIFT		0
+
 
 #define DRV_MB_PARAM_SET_LED_MODE_OPER		0x0
 #define DRV_MB_PARAM_SET_LED_MODE_ON		0x1

include/linux/qed/qed_if.h

@@ -34,6 +34,96 @@ enum dcbx_protocol_type {
 	DCBX_MAX_PROTOCOL_TYPE
 };
 
+#ifdef CONFIG_DCB
+#define QED_LLDP_CHASSIS_ID_STAT_LEN 4
+#define QED_LLDP_PORT_ID_STAT_LEN 4
+#define QED_DCBX_MAX_APP_PROTOCOL 32
+#define QED_MAX_PFC_PRIORITIES 8
+#define QED_DCBX_DSCP_SIZE 64
+
+struct qed_dcbx_lldp_remote {
+	u32 peer_chassis_id[QED_LLDP_CHASSIS_ID_STAT_LEN];
+	u32 peer_port_id[QED_LLDP_PORT_ID_STAT_LEN];
+	bool enable_rx;
+	bool enable_tx;
+	u32 tx_interval;
+	u32 max_credit;
+};
+
+struct qed_dcbx_lldp_local {
+	u32 local_chassis_id[QED_LLDP_CHASSIS_ID_STAT_LEN];
+	u32 local_port_id[QED_LLDP_PORT_ID_STAT_LEN];
+};
+
+struct qed_dcbx_app_prio {
+	u8 roce;
+	u8 roce_v2;
+	u8 fcoe;
+	u8 iscsi;
+	u8 eth;
+};
+
+struct qed_dbcx_pfc_params {
+	bool willing;
+	bool enabled;
+	u8 prio[QED_MAX_PFC_PRIORITIES];
+	u8 max_tc;
+};
+
+struct qed_app_entry {
+	bool ethtype;
+	bool enabled;
+	u8 prio;
+	u16 proto_id;
+	enum dcbx_protocol_type proto_type;
+};
+
+struct qed_dcbx_params {
+	struct qed_app_entry app_entry[QED_DCBX_MAX_APP_PROTOCOL];
+	u16 num_app_entries;
+	bool app_willing;
+	bool app_valid;
+	bool app_error;
+	bool ets_willing;
+	bool ets_enabled;
+	bool ets_cbs;
+	bool valid;
+	u8 ets_pri_tc_tbl[QED_MAX_PFC_PRIORITIES];
+	u8 ets_tc_bw_tbl[QED_MAX_PFC_PRIORITIES];
+	u8 ets_tc_tsa_tbl[QED_MAX_PFC_PRIORITIES];
+	struct qed_dbcx_pfc_params pfc;
+	u8 max_ets_tc;
+};
+
+struct qed_dcbx_admin_params {
+	struct qed_dcbx_params params;
+	bool valid;
+};
+
+struct qed_dcbx_remote_params {
+	struct qed_dcbx_params params;
+	bool valid;
+};
+
+struct qed_dcbx_operational_params {
+	struct qed_dcbx_app_prio app_prio;
+	struct qed_dcbx_params params;
+	bool valid;
+	bool enabled;
+	bool ieee;
+	bool cee;
+	u32 err;
+};
+
+struct qed_dcbx_get {
+	struct qed_dcbx_operational_params operational;
+	struct qed_dcbx_lldp_remote lldp_remote;
+	struct qed_dcbx_lldp_local lldp_local;
+	struct qed_dcbx_remote_params remote;
+	struct qed_dcbx_admin_params local;
+};
+#endif
+
 enum qed_led_mode {
 	QED_LED_MODE_OFF,
 	QED_LED_MODE_ON,