Merge branch 'linus' into tracing/hw-breakpoints

Conflicts:
	arch/x86/Kconfig
	arch/x86/kernel/traps.c
	arch/x86/power/cpu.c
	arch/x86/power/cpu_32.c
	kernel/Makefile

Semantic conflict:
	arch/x86/kernel/hw_breakpoint.c

Merge reason: Resolve the conflicts, move from put_cpu_no_sched() to
              put_cpu() in arch/x86/kernel/hw_breakpoint.c.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 85 insertions, 34 deletions

diff --git a/drivers/net/ixgbe/ixgbe_dcb_nl.c b/drivers/net/ixgbe/ixgbe_dcb_nl.c
index bd0a0c27695..d56890f5c9d 100644
--- a/drivers/net/ixgbe/ixgbe_dcb_nl.c
+++ b/drivers/net/ixgbe/ixgbe_dcb_nl.c
@@ -28,15 +28,22 @@
 
 #include "ixgbe.h"
 #include <linux/dcbnl.h>
+#include "ixgbe_dcb_82598.h"
+#include "ixgbe_dcb_82599.h"
 
 /* Callbacks for DCB netlink in the kernel */
 #define BIT_DCB_MODE	0x01
 #define BIT_PFC		0x02
 #define BIT_PG_RX	0x04
 #define BIT_PG_TX	0x08
-#define BIT_BCN         0x10
+#define BIT_RESETLINK   0x40
 #define BIT_LINKSPEED   0x80
 
+/* Responses for the DCB_C_SET_ALL command */
+#define DCB_HW_CHG_RST  0  /* DCB configuration changed with reset */
+#define DCB_NO_HW_CHG   1  /* DCB configuration did not change */
+#define DCB_HW_CHG      2  /* DCB configuration changed, no reset */
+
 int ixgbe_copy_dcb_cfg(struct ixgbe_dcb_config *src_dcb_cfg,
                        struct ixgbe_dcb_config *dst_dcb_cfg, int tc_max)
 {
@@ -124,15 +131,12 @@ static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
 
 		if (netif_running(netdev))
 			netdev->netdev_ops->ndo_stop(netdev);
-		ixgbe_reset_interrupt_capability(adapter);
-		ixgbe_napi_del_all(adapter);
-		INIT_LIST_HEAD(&netdev->napi_list);
-		kfree(adapter->tx_ring);
-		kfree(adapter->rx_ring);
-		adapter->tx_ring = NULL;
-		adapter->rx_ring = NULL;
+		ixgbe_clear_interrupt_scheme(adapter);
 
-		adapter->hw.fc.requested_mode = ixgbe_fc_pfc;
+		if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
+			adapter->last_lfc_mode = adapter->hw.fc.current_mode;
+			adapter->hw.fc.requested_mode = ixgbe_fc_none;
+		}
 		adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
 		adapter->flags |= IXGBE_FLAG_DCB_ENABLED;
 		ixgbe_init_interrupt_scheme(adapter);
@@ -141,17 +145,13 @@ static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
 	} else {
 		/* Turn off DCB */
 		if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
-			adapter->hw.fc.requested_mode = ixgbe_fc_default;
 			if (netif_running(netdev))
 				netdev->netdev_ops->ndo_stop(netdev);
-			ixgbe_reset_interrupt_capability(adapter);
-			ixgbe_napi_del_all(adapter);
-			INIT_LIST_HEAD(&netdev->napi_list);
-			kfree(adapter->tx_ring);
-			kfree(adapter->rx_ring);
-			adapter->tx_ring = NULL;
-			adapter->rx_ring = NULL;
+			ixgbe_clear_interrupt_scheme(adapter);
 
+			adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
+			adapter->temp_dcb_cfg.pfc_mode_enable = false;
+			adapter->dcb_cfg.pfc_mode_enable = false;
 			adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
 			adapter->flags |= IXGBE_FLAG_RSS_ENABLED;
 			ixgbe_init_interrupt_scheme(adapter);
@@ -167,10 +167,15 @@ static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev,
 					 u8 *perm_addr)
 {
 	struct ixgbe_adapter *adapter = netdev_priv(netdev);
-	int i;
+	int i, j;
 
 	for (i = 0; i < netdev->addr_len; i++)
 		perm_addr[i] = adapter->hw.mac.perm_addr[i];
+
+	if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
+		for (j = 0; j < netdev->addr_len; j++, i++)
+			perm_addr[i] = adapter->hw.mac.san_addr[j];
+	}
 }
 
 static void ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc,
@@ -197,8 +202,10 @@ static void ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 	    (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent !=
 	     adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent) ||
 	    (adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap !=
-	     adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap))
+	     adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap)) {
 		adapter->dcb_set_bitmap |= BIT_PG_TX;
+		adapter->dcb_set_bitmap |= BIT_RESETLINK;
+	}
 }
 
 static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
@@ -209,8 +216,10 @@ static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 	adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] = bw_pct;
 
 	if (adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] !=
-	    adapter->dcb_cfg.bw_percentage[0][bwg_id])
+	    adapter->dcb_cfg.bw_percentage[0][bwg_id]) {
 		adapter->dcb_set_bitmap |= BIT_PG_RX;
+		adapter->dcb_set_bitmap |= BIT_RESETLINK;
+	}
 }
 
 static void ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev, int tc,
@@ -237,8 +246,10 @@ static void ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 	    (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent !=
 	     adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent) ||
 	    (adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap !=
-	     adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap))
+	     adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap)) {
 		adapter->dcb_set_bitmap |= BIT_PG_RX;
+		adapter->dcb_set_bitmap |= BIT_RESETLINK;
+	}
 }
 
 static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
@@ -249,8 +260,10 @@ static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 	adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct;
 
 	if (adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] !=
-	    adapter->dcb_cfg.bw_percentage[1][bwg_id])
+	    adapter->dcb_cfg.bw_percentage[1][bwg_id]) {
 		adapter->dcb_set_bitmap |= BIT_PG_RX;
+		adapter->dcb_set_bitmap |= BIT_RESETLINK;
+	}
 }
 
 static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc,
@@ -319,28 +332,60 @@ static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
 	struct ixgbe_adapter *adapter = netdev_priv(netdev);
 	int ret;
 
-	adapter->dcb_set_bitmap &= ~BIT_BCN;	/* no set for BCN */
 	if (!adapter->dcb_set_bitmap)
-		return 1;
+		return DCB_NO_HW_CHG;
 
-	while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
-		msleep(1);
+	/*
+	 * Only take down the adapter if the configuration change
+	 * requires a reset.
+	 */
+	if (adapter->dcb_set_bitmap & BIT_RESETLINK) {
+		while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
+			msleep(1);
 
-	if (netif_running(netdev))
-		ixgbe_down(adapter);
+		if (netif_running(netdev))
+			ixgbe_down(adapter);
+	}
 
 	ret = ixgbe_copy_dcb_cfg(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
 				 adapter->ring_feature[RING_F_DCB].indices);
 	if (ret) {
-		clear_bit(__IXGBE_RESETTING, &adapter->state);
-		return ret;
+		if (adapter->dcb_set_bitmap & BIT_RESETLINK)
+			clear_bit(__IXGBE_RESETTING, &adapter->state);
+		return DCB_NO_HW_CHG;
+	}
+
+	if (adapter->dcb_cfg.pfc_mode_enable) {
+		if ((adapter->hw.mac.type != ixgbe_mac_82598EB) &&
+			(adapter->hw.fc.current_mode != ixgbe_fc_pfc))
+			adapter->last_lfc_mode = adapter->hw.fc.current_mode;
+		adapter->hw.fc.requested_mode = ixgbe_fc_pfc;
+	} else {
+		if (adapter->hw.mac.type != ixgbe_mac_82598EB)
+			adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
+		else
+			adapter->hw.fc.requested_mode = ixgbe_fc_none;
 	}
 
-	if (netif_running(netdev))
-		ixgbe_up(adapter);
+	if (adapter->dcb_set_bitmap & BIT_RESETLINK) {
+		if (netif_running(netdev))
+			ixgbe_up(adapter);
+		ret = DCB_HW_CHG_RST;
+	} else if (adapter->dcb_set_bitmap & BIT_PFC) {
+		if (adapter->hw.mac.type == ixgbe_mac_82598EB)
+			ixgbe_dcb_config_pfc_82598(&adapter->hw,
+			                           &adapter->dcb_cfg);
+		else if (adapter->hw.mac.type == ixgbe_mac_82599EB)
+			ixgbe_dcb_config_pfc_82599(&adapter->hw,
+			                           &adapter->dcb_cfg);
+		ret = DCB_HW_CHG;
+	}
+	if (adapter->dcb_cfg.pfc_mode_enable)
+		adapter->hw.fc.current_mode = ixgbe_fc_pfc;
 
+	if (adapter->dcb_set_bitmap & BIT_RESETLINK)
+		clear_bit(__IXGBE_RESETTING, &adapter->state);
 	adapter->dcb_set_bitmap = 0x00;
-	clear_bit(__IXGBE_RESETTING, &adapter->state);
 	return ret;
 }
 
@@ -416,11 +461,17 @@ static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
 {
 	struct ixgbe_adapter *adapter = netdev_priv(netdev);
 
-	return !!(adapter->flags & IXGBE_FLAG_DCB_ENABLED);
+	return adapter->dcb_cfg.pfc_mode_enable;
 }
 
 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
 {
+	struct ixgbe_adapter *adapter = netdev_priv(netdev);
+
+	adapter->temp_dcb_cfg.pfc_mode_enable = state;
+	if (adapter->temp_dcb_cfg.pfc_mode_enable !=
+		adapter->dcb_cfg.pfc_mode_enable)
+		adapter->dcb_set_bitmap |= BIT_PFC;
 	return;
 }