bnx2x: adding dcbnl support

Adding dcbnl implementation to bnx2x allowing users to manage the
embedded DCBX engine.

This patch is dependent on the following patches:
[net-next-2.6 PATCH 1/3] dcbnl: add support for ieee8021Qaz attributes
[net-next-2.6 PATCH 2/3] dcbnl: add appliction tlv handlers
[net-next-2.6 PATCH 3/3] net_dcb: add application notifiers
Signed-off-by: Shmulik Ravid <shmulikr@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/bnx2x/bnx2x.h

@@ -22,15 +22,17 @@
  * (you will need to reboot afterwards) */
 /* #define BNX2X_STOP_ON_ERROR */
 
-#define DRV_MODULE_VERSION      "1.62.00-2"
-#define DRV_MODULE_RELDATE      "2010/12/13"
+#define DRV_MODULE_VERSION      "1.62.00-3"
+#define DRV_MODULE_RELDATE      "2010/12/21"
 #define BNX2X_BC_VER            0x040200
 
 #define BNX2X_MULTI_QUEUE
 
 #define BNX2X_NEW_NAPI
 
-
+#if defined(CONFIG_DCB)
+#define BCM_DCB
+#endif
 #if defined(CONFIG_CNIC) || defined(CONFIG_CNIC_MODULE)
 #define BCM_CNIC 1
 #include "../cnic_if.h"
@@ -1186,7 +1188,20 @@ struct bnx2x {
 	/* LLDP params */
 	struct bnx2x_config_lldp_params		lldp_config_params;
 
-	/* DCBX params */
+	/* DCB support on/off */
+	u16 dcb_state;
+#define BNX2X_DCB_STATE_OFF			0
+#define BNX2X_DCB_STATE_ON			1
+
+	/* DCBX engine mode */
+	int dcbx_enabled;
+#define BNX2X_DCBX_ENABLED_OFF			0
+#define BNX2X_DCBX_ENABLED_ON_NEG_OFF		1
+#define BNX2X_DCBX_ENABLED_ON_NEG_ON		2
+#define BNX2X_DCBX_ENABLED_INVALID		(-1)
+
+	bool dcbx_mode_uset;
+
 	struct bnx2x_config_dcbx_params		dcbx_config_params;
 
 	struct bnx2x_dcbx_port_params		dcbx_port_params;

drivers/net/bnx2x/bnx2x_dcb.h

@@ -51,7 +51,6 @@ struct bnx2x_dcbx_pfc_params {
 };
 
 struct bnx2x_dcbx_port_params {
-	u32 dcbx_enabled;
 	struct bnx2x_dcbx_pfc_params pfc;
 	struct bnx2x_dcbx_pg_params  ets;
 	struct bnx2x_dcbx_app_params app;
@@ -88,8 +87,6 @@ struct bnx2x_admin_priority_app_table {
  * DCBX protocol configuration parameters.
  ******************************************************************************/
 struct bnx2x_config_dcbx_params {
-	u32 dcb_enable;
-	u32 admin_dcbx_enable;
 	u32 overwrite_settings;
 	u32 admin_dcbx_version;
 	u32 admin_ets_enable;
@@ -182,6 +179,7 @@ struct bnx2x;
 void bnx2x_dcb_init_intmem_pfc(struct bnx2x *bp);
 void bnx2x_dcbx_update(struct work_struct *work);
 void bnx2x_dcbx_init_params(struct bnx2x *bp);
+void bnx2x_dcbx_set_state(struct bnx2x *bp, bool dcb_on, u32 dcbx_enabled);
 
 enum {
 	BNX2X_DCBX_STATE_NEG_RECEIVED = 0x1,
@@ -190,4 +188,9 @@ enum {
 };
 void bnx2x_dcbx_set_params(struct bnx2x *bp, u32 state);
 
+/* DCB netlink */
+#ifdef BCM_DCB
+extern const struct dcbnl_rtnl_ops bnx2x_dcbnl_ops;
+#endif /* BCM_DCB */
+
 #endif /* BNX2X_DCB_H */

drivers/net/bnx2x/bnx2x_main.c

@@ -3107,7 +3107,8 @@ static inline void bnx2x_attn_int_deasserted3(struct bnx2x *bp, u32 attn)
 				bnx2x_pmf_update(bp);
 
 			if (bp->port.pmf &&
-			    (val & DRV_STATUS_DCBX_NEGOTIATION_RESULTS))
+			    (val & DRV_STATUS_DCBX_NEGOTIATION_RESULTS) &&
+				bp->dcbx_enabled > 0)
 				/* start dcbx state machine */
 				bnx2x_dcbx_set_params(bp,
 					BNX2X_DCBX_STATE_NEG_RECEIVED);
@@ -8795,6 +8796,7 @@ static int __devinit bnx2x_init_bp(struct bnx2x *bp)
 	bp->timer.data = (unsigned long) bp;
 	bp->timer.function = bnx2x_timer;
 
+	bnx2x_dcbx_set_state(bp, true, BNX2X_DCBX_ENABLED_ON_NEG_ON);
 	bnx2x_dcbx_init_params(bp);
 
 	return rc;
@@ -9146,6 +9148,10 @@ static int __devinit bnx2x_init_dev(struct pci_dev *pdev,
 	dev->vlan_features |= (NETIF_F_TSO | NETIF_F_TSO_ECN);
 	dev->vlan_features |= NETIF_F_TSO6;
 
+#ifdef BCM_DCB
+	dev->dcbnl_ops = &bnx2x_dcbnl_ops;
+#endif
+
 	/* get_port_hwinfo() will set prtad and mmds properly */
 	bp->mdio.prtad = MDIO_PRTAD_NONE;
 	bp->mdio.mmds = 0;