ixgbe: this patch adds support for DCB to the kernel and ixgbe driver

index 2198b77..b21a8c9 100644
@@ -35,6 +35,7 @@
 
 #include "ixgbe_type.h"
 #include "ixgbe_common.h"
+#include "ixgbe_dcb.h"
 
 #if defined(CONFIG_DCA) || defined(CONFIG_DCA_MODULE)
 #include <linux/dca.h>

@@ -84,6 +85,7 @@
 #define IXGBE_TX_FLAGS_TSO		(u32)(1 << 2)
 #define IXGBE_TX_FLAGS_IPV4		(u32)(1 << 3)
 #define IXGBE_TX_FLAGS_VLAN_MASK	0xffff0000
+#define IXGBE_TX_FLAGS_VLAN_PRIO_MASK	0x0000e000
 #define IXGBE_TX_FLAGS_VLAN_SHIFT	16
 
 #define IXGBE_MAX_LRO_DESCRIPTORS       8

@@ -134,7 +136,7 @@ struct ixgbe_ring {
 
 	u16 reg_idx; /* holds the special value that gets the hardware register
 		      * offset associated with this ring, which is different
-		      * for DCE and RSS modes */
+		      * for DCB and RSS modes */
 
 #if defined(CONFIG_DCA) || defined(CONFIG_DCA_MODULE)
 	/* cpu for tx queue */

@@ -152,8 +154,10 @@ struct ixgbe_ring {
 	u16 rx_buf_len;
 };
 
+#define RING_F_DCB  0
 #define RING_F_VMDQ 1
 #define RING_F_RSS  2
+#define IXGBE_MAX_DCB_INDICES   8
 #define IXGBE_MAX_RSS_INDICES  16
 #define IXGBE_MAX_VMDQ_INDICES 16
 struct ixgbe_ring_feature {

@@ -164,6 +168,10 @@ struct ixgbe_ring_feature {
 #define MAX_RX_QUEUES 64
 #define MAX_TX_QUEUES 32
 
+#define MAX_RX_PACKET_BUFFERS ((adapter->flags & IXGBE_FLAG_DCB_ENABLED) \
+			       ? 8 : 1)
+#define MAX_TX_PACKET_BUFFERS MAX_RX_PACKET_BUFFERS
+
 /* MAX_MSIX_Q_VECTORS of these are allocated,
  * but we only use one per queue-specific vector.
  */

@@ -215,6 +223,9 @@ struct ixgbe_adapter {
 	struct work_struct reset_task;
 	struct ixgbe_q_vector q_vector[MAX_MSIX_Q_VECTORS];
 	char name[MAX_MSIX_COUNT][IFNAMSIZ + 5];
+	struct ixgbe_dcb_config dcb_cfg;
+	struct ixgbe_dcb_config temp_dcb_cfg;
+	u8 dcb_set_bitmap;
 
 	/* Interrupt Throttle Rate */
 	u32 itr_setting;

@@ -269,6 +280,7 @@ struct ixgbe_adapter {
 #define IXGBE_FLAG_VMDQ_ENABLED                 (u32)(1 << 19)
 #define IXGBE_FLAG_NEED_LINK_UPDATE             (u32)(1 << 22)
 #define IXGBE_FLAG_IN_WATCHDOG_TASK             (u32)(1 << 23)
+#define IXGBE_FLAG_DCB_ENABLED                  (u32)(1 << 24)
 
 /* default to trying for four seconds */
 #define IXGBE_TRY_LINK_TIMEOUT (4 * HZ)

@@ -312,6 +324,13 @@ enum ixgbe_boards {
 };
 
 extern struct ixgbe_info ixgbe_82598_info;
+#ifdef CONFIG_DCBNL
+extern struct dcbnl_rtnl_ops dcbnl_ops;
+extern int ixgbe_copy_dcb_cfg(struct ixgbe_dcb_config *src_dcb_cfg,
+                              struct ixgbe_dcb_config *dst_dcb_cfg, int tc_max);
+#endif
+
+
 
 extern char ixgbe_driver_name[];
 extern const char ixgbe_driver_version[];

@@ -326,5 +345,8 @@ extern int ixgbe_setup_tx_resources(struct ixgbe_adapter *, struct ixgbe_ring *)
 extern void ixgbe_free_rx_resources(struct ixgbe_adapter *, struct ixgbe_ring *);
 extern void ixgbe_free_tx_resources(struct ixgbe_adapter *, struct ixgbe_ring *);
 extern void ixgbe_update_stats(struct ixgbe_adapter *adapter);
-
+extern void ixgbe_reset_interrupt_capability(struct ixgbe_adapter *adapter);
+extern int ixgbe_init_interrupt_scheme(struct ixgbe_adapter *adapter);
+void ixgbe_napi_add_all(struct ixgbe_adapter *adapter);
+void ixgbe_napi_del_all(struct ixgbe_adapter *adapter);
 #endif /* _IXGBE_H_ */

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index 81a9c4b..87dda98 100644
@@ -97,9 +97,18 @@ static struct ixgbe_stats ixgbe_gstrings_stats[] = {
                 ((((struct ixgbe_adapter *)netdev->priv)->num_tx_queues + \
                  ((struct ixgbe_adapter *)netdev->priv)->num_rx_queues) * \
                  (sizeof(struct ixgbe_queue_stats) / sizeof(u64)))
-#define IXGBE_STATS_LEN (IXGBE_GLOBAL_STATS_LEN + IXGBE_QUEUE_STATS_LEN)
 #define IXGBE_GLOBAL_STATS_LEN ARRAY_SIZE(ixgbe_gstrings_stats)
-#define IXGBE_STATS_LEN (IXGBE_GLOBAL_STATS_LEN + IXGBE_QUEUE_STATS_LEN)
+#define IXGBE_PB_STATS_LEN ( \
+                 (((struct ixgbe_adapter *)netdev->priv)->flags & \
+                 IXGBE_FLAG_DCB_ENABLED) ? \
+                 (sizeof(((struct ixgbe_adapter *)0)->stats.pxonrxc) + \
+                  sizeof(((struct ixgbe_adapter *)0)->stats.pxontxc) + \
+                  sizeof(((struct ixgbe_adapter *)0)->stats.pxoffrxc) + \
+                  sizeof(((struct ixgbe_adapter *)0)->stats.pxofftxc)) \
+                  / sizeof(u64) : 0)
+#define IXGBE_STATS_LEN (IXGBE_GLOBAL_STATS_LEN + \
+                         IXGBE_PB_STATS_LEN + \
+                         IXGBE_QUEUE_STATS_LEN)
 
 static int ixgbe_get_settings(struct net_device *netdev,
                               struct ethtool_cmd *ecmd)

@@ -804,6 +813,16 @@ static void ixgbe_get_ethtool_stats(struct net_device *netdev,
 			data[i + k] = queue_stat[k];
 		i += k;
 	}
+	if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
+		for (j = 0; j < MAX_TX_PACKET_BUFFERS; j++) {
+			data[i++] = adapter->stats.pxontxc[j];
+			data[i++] = adapter->stats.pxofftxc[j];
+		}
+		for (j = 0; j < MAX_RX_PACKET_BUFFERS; j++) {
+			data[i++] = adapter->stats.pxonrxc[j];
+			data[i++] = adapter->stats.pxoffrxc[j];
+		}
+	}
 }
 
 static void ixgbe_get_strings(struct net_device *netdev, u32 stringset,

@@ -832,6 +851,20 @@ static void ixgbe_get_strings(struct net_device *netdev, u32 stringset,
 			sprintf(p, "rx_queue_%u_bytes", i);
 			p += ETH_GSTRING_LEN;
 		}
+		if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
+			for (i = 0; i < MAX_TX_PACKET_BUFFERS; i++) {
+				sprintf(p, "tx_pb_%u_pxon", i);
+				p += ETH_GSTRING_LEN;
+				sprintf(p, "tx_pb_%u_pxoff", i);
+				p += ETH_GSTRING_LEN;
+			}
+			for (i = 0; i < MAX_RX_PACKET_BUFFERS; i++) {
+				sprintf(p, "rx_pb_%u_pxon", i);
+				p += ETH_GSTRING_LEN;
+				sprintf(p, "rx_pb_%u_pxoff", i);
+				p += ETH_GSTRING_LEN;
+			}
+		}
 		/* BUG_ON(p - data != IXGBE_STATS_LEN * ETH_GSTRING_LEN); */
 		break;
 	}

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index 9cfd20b..f010c1a 100644
@@ -42,6 +42,9 @@
 #include <linux/workqueue.h>
 
 #include <net/net_namespace.h>
+#ifdef CONFIG_DCBNL
+#include <net/dcbnl.h>
+#endif
 
 struct vlan_group;
 struct ethtool_ops;

@@ -751,6 +754,11 @@ struct net_device
 	/* for setting kernel sock attribute on TCP connection setup */
 #define GSO_MAX_SIZE		65536
 	unsigned int		gso_max_size;
+
+#ifdef CONFIG_DCBNL
+	/* Data Center Bridging netlink ops */
+	struct dcbnl_rtnl_ops *dcbnl_ops;
+#endif
 };
 #define to_net_dev(d) container_of(d, struct net_device, dev)
 

index 2b3d51c..e88f705 100644
@@ -107,6 +107,11 @@ enum {
 	RTM_GETADDRLABEL,
 #define RTM_GETADDRLABEL RTM_GETADDRLABEL
 
+	RTM_GETDCB = 78,
+#define RTM_GETDCB RTM_GETDCB
+	RTM_SETDCB,
+#define RTM_SETDCB RTM_SETDCB
+
 	__RTM_MAX,
 #define RTM_MAX		(((__RTM_MAX + 3) & ~3) - 1)
 };

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