Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

Conflicts:
	drivers/net/bnx2x/bnx2x_cmn.c

9 files changed, 80 insertions, 36 deletions

diff --git a/drivers/net/bnx2x/bnx2x.h b/drivers/net/bnx2x/bnx2x.h
index 50d1e0793091..b7ff87b35fbb 100644
--- a/drivers/net/bnx2x/bnx2x.h
+++ b/drivers/net/bnx2x/bnx2x.h
@@ -1223,6 +1223,7 @@ struct bnx2x {
 	/* DCBX Negotation results */
 	struct dcbx_features			dcbx_local_feat;
 	u32					dcbx_error;
+	u32					pending_max;
 };
 
 /**
@@ -1634,8 +1635,8 @@ static inline u32 reg_poll(struct bnx2x *bp, u32 reg, u32 expected, int ms,
 /* CMNG constants, as derived from system spec calculations */
 /* default MIN rate in case VNIC min rate is configured to zero - 100Mbps */
 #define DEF_MIN_RATE					100
-/* resolution of the rate shaping timer - 100 usec */
-#define RS_PERIODIC_TIMEOUT_USEC			100
+/* resolution of the rate shaping timer - 400 usec */
+#define RS_PERIODIC_TIMEOUT_USEC			400
 /* number of bytes in single QM arbitration cycle -
  * coefficient for calculating the fairness timer */
 #define QM_ARB_BYTES					160000
diff --git a/drivers/net/bnx2x/bnx2x_cmn.c b/drivers/net/bnx2x/bnx2x_cmn.c
index b01b622f4e13..e83ac6dd6fc0 100644
--- a/drivers/net/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/bnx2x/bnx2x_cmn.c
@@ -993,6 +993,23 @@ void bnx2x_free_skbs(struct bnx2x *bp)
 	bnx2x_free_rx_skbs(bp);
 }
 
+void bnx2x_update_max_mf_config(struct bnx2x *bp, u32 value)
+{
+	/* load old values */
+	u32 mf_cfg = bp->mf_config[BP_VN(bp)];
+
+	if (value != bnx2x_extract_max_cfg(bp, mf_cfg)) {
+		/* leave all but MAX value */
+		mf_cfg &= ~FUNC_MF_CFG_MAX_BW_MASK;
+
+		/* set new MAX value */
+		mf_cfg |= (value << FUNC_MF_CFG_MAX_BW_SHIFT)
+				& FUNC_MF_CFG_MAX_BW_MASK;
+
+		bnx2x_fw_command(bp, DRV_MSG_CODE_SET_MF_BW, mf_cfg);
+	}
+}
+
 static void bnx2x_free_msix_irqs(struct bnx2x *bp)
 {
 	int i, offset = 1;
@@ -1498,6 +1515,11 @@ int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
 	/* Clear UC lists configuration */
 	bnx2x_invalidate_uc_list(bp);
 
+	if (bp->pending_max) {
+		bnx2x_update_max_mf_config(bp, bp->pending_max);
+		bp->pending_max = 0;
+	}
+
 	if (bp->port.pmf)
 		bnx2x_initial_phy_init(bp, load_mode);
 
diff --git a/drivers/net/bnx2x/bnx2x_cmn.h b/drivers/net/bnx2x/bnx2x_cmn.h
index 8c401c990bf2..ef37b98d6146 100644
--- a/drivers/net/bnx2x/bnx2x_cmn.h
+++ b/drivers/net/bnx2x/bnx2x_cmn.h
@@ -341,6 +341,15 @@ void bnx2x_dcbx_init(struct bnx2x *bp);
  */
 int bnx2x_set_power_state(struct bnx2x *bp, pci_power_t state);
 
+/**
+ * Updates MAX part of MF configuration in HW
+ * (if required)
+ *
+ * @param bp
+ * @param value
+ */
+void bnx2x_update_max_mf_config(struct bnx2x *bp, u32 value);
+
 /* dev_close main block */
 int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode);
 
diff --git a/drivers/net/bnx2x/bnx2x_ethtool.c b/drivers/net/bnx2x/bnx2x_ethtool.c
index 85291d8b3329..f5050155c6b5 100644
--- a/drivers/net/bnx2x/bnx2x_ethtool.c
+++ b/drivers/net/bnx2x/bnx2x_ethtool.c
@@ -238,7 +238,7 @@ static int bnx2x_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 	speed |= (cmd->speed_hi << 16);
 
 	if (IS_MF_SI(bp)) {
-		u32 param = 0, part;
+		u32 part;
 		u32 line_speed = bp->link_vars.line_speed;
 
 		/* use 10G if no link detected */
@@ -251,24 +251,22 @@ static int bnx2x_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 				       REQ_BC_VER_4_SET_MF_BW);
 			return -EINVAL;
 		}
+
 		part = (speed * 100) / line_speed;
+
 		if (line_speed < speed || !part) {
 			BNX2X_DEV_INFO("Speed setting should be in a range "
 				       "from 1%% to 100%% "
 				       "of actual line speed\n");
 			return -EINVAL;
 		}
-		/* load old values */
-		param = bp->mf_config[BP_VN(bp)];
 
-		/* leave only MIN value */
-		param &= FUNC_MF_CFG_MIN_BW_MASK;
-
-		/* set new MAX value */
-		param |= (part << FUNC_MF_CFG_MAX_BW_SHIFT)
-				  & FUNC_MF_CFG_MAX_BW_MASK;
+		if (bp->state != BNX2X_STATE_OPEN)
+			/* store value for following "load" */
+			bp->pending_max = part;
+		else
+			bnx2x_update_max_mf_config(bp, part);
 
-		bnx2x_fw_command(bp, DRV_MSG_CODE_SET_MF_BW, param);
 		return 0;
 	}
 
diff --git a/drivers/net/bnx2x/bnx2x_main.c b/drivers/net/bnx2x/bnx2x_main.c
index 30b21d2f26f6..bba21d5f708b 100644
--- a/drivers/net/bnx2x/bnx2x_main.c
+++ b/drivers/net/bnx2x/bnx2x_main.c
@@ -2092,8 +2092,9 @@ static void bnx2x_cmng_fns_init(struct bnx2x *bp, u8 read_cfg, u8 cmng_type)
 		bnx2x_calc_vn_weight_sum(bp);
 
 		/* calculate and set min-max rate for each vn */
-		for (vn = VN_0; vn < E1HVN_MAX; vn++)
-			bnx2x_init_vn_minmax(bp, vn);
+		if (bp->port.pmf)
+			for (vn = VN_0; vn < E1HVN_MAX; vn++)
+				bnx2x_init_vn_minmax(bp, vn);
 
 		/* always enable rate shaping and fairness */
 		bp->cmng.flags.cmng_enables |=
@@ -2162,13 +2163,6 @@ static void bnx2x_link_attn(struct bnx2x *bp)
 			bnx2x_stats_handle(bp, STATS_EVENT_LINK_UP);
 	}
 
-	/* indicate link status only if link status actually changed */
-	if (prev_link_status != bp->link_vars.link_status)
-		bnx2x_link_report(bp);
-
-	if (IS_MF(bp))
-		bnx2x_link_sync_notify(bp);
-
 	if (bp->link_vars.link_up && bp->link_vars.line_speed) {
 		int cmng_fns = bnx2x_get_cmng_fns_mode(bp);
 
@@ -2180,6 +2174,13 @@ static void bnx2x_link_attn(struct bnx2x *bp)
 			DP(NETIF_MSG_IFUP,
 			   "single function mode without fairness\n");
 	}
+
+	if (IS_MF(bp))
+		bnx2x_link_sync_notify(bp);
+
+	/* indicate link status only if link status actually changed */
+	if (prev_link_status != bp->link_vars.link_status)
+		bnx2x_link_report(bp);
 }
 
 void bnx2x__link_status_update(struct bnx2x *bp)
diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c
index 1024ae158227..a5d5d0b5b155 100644
--- a/drivers/net/bonding/bond_3ad.c
+++ b/drivers/net/bonding/bond_3ad.c
@@ -281,23 +281,23 @@ static inline int __check_agg_selection_timer(struct port *port)
 }
 
 /**
- * __get_rx_machine_lock - lock the port's RX machine
+ * __get_state_machine_lock - lock the port's state machines
  * @port: the port we're looking at
  *
  */
-static inline void __get_rx_machine_lock(struct port *port)
+static inline void __get_state_machine_lock(struct port *port)
 {
-	spin_lock_bh(&(SLAVE_AD_INFO(port->slave).rx_machine_lock));
+	spin_lock_bh(&(SLAVE_AD_INFO(port->slave).state_machine_lock));
 }
 
 /**
- * __release_rx_machine_lock - unlock the port's RX machine
+ * __release_state_machine_lock - unlock the port's state machines
  * @port: the port we're looking at
  *
  */
-static inline void __release_rx_machine_lock(struct port *port)
+static inline void __release_state_machine_lock(struct port *port)
 {
-	spin_unlock_bh(&(SLAVE_AD_INFO(port->slave).rx_machine_lock));
+	spin_unlock_bh(&(SLAVE_AD_INFO(port->slave).state_machine_lock));
 }
 
 /**
@@ -388,14 +388,14 @@ static u8 __get_duplex(struct port *port)
 }
 
 /**
- * __initialize_port_locks - initialize a port's RX machine spinlock
+ * __initialize_port_locks - initialize a port's STATE machine spinlock
  * @port: the port we're looking at
  *
  */
 static inline void __initialize_port_locks(struct port *port)
 {
 	// make sure it isn't called twice
-	spin_lock_init(&(SLAVE_AD_INFO(port->slave).rx_machine_lock));
+	spin_lock_init(&(SLAVE_AD_INFO(port->slave).state_machine_lock));
 }
 
 //conversions
@@ -1025,9 +1025,6 @@ static void ad_rx_machine(struct lacpdu *lacpdu, struct port *port)
 {
 	rx_states_t last_state;
 
-	// Lock to prevent 2 instances of this function to run simultaneously(rx interrupt and periodic machine callback)
-	__get_rx_machine_lock(port);
-
 	// keep current State Machine state to compare later if it was changed
 	last_state = port->sm_rx_state;
 
@@ -1133,7 +1130,6 @@ static void ad_rx_machine(struct lacpdu *lacpdu, struct port *port)
 				pr_err("%s: An illegal loopback occurred on adapter (%s).\n"
 				       "Check the configuration to verify that all adapters are connected to 802.3ad compliant switch ports\n",
 				       port->slave->dev->master->name, port->slave->dev->name);
-				__release_rx_machine_lock(port);
 				return;
 			}
 			__update_selected(lacpdu, port);
@@ -1153,7 +1149,6 @@ static void ad_rx_machine(struct lacpdu *lacpdu, struct port *port)
 			break;
 		}
 	}
-	__release_rx_machine_lock(port);
 }
 
 /**
@@ -2155,6 +2150,12 @@ void bond_3ad_state_machine_handler(struct work_struct *work)
 			goto re_arm;
 		}
 
+		/* Lock around state machines to protect data accessed
+		 * by all (e.g., port->sm_vars).  ad_rx_machine may run
+		 * concurrently due to incoming LACPDU.
+		 */
+		__get_state_machine_lock(port);
+
 		ad_rx_machine(NULL, port);
 		ad_periodic_machine(port);
 		ad_port_selection_logic(port);
@@ -2164,6 +2165,8 @@ void bond_3ad_state_machine_handler(struct work_struct *work)
 		// turn off the BEGIN bit, since we already handled it
 		if (port->sm_vars & AD_PORT_BEGIN)
 			port->sm_vars &= ~AD_PORT_BEGIN;
+
+		__release_state_machine_lock(port);
 	}
 
 re_arm:
@@ -2200,7 +2203,10 @@ static void bond_3ad_rx_indication(struct lacpdu *lacpdu, struct slave *slave, u
 		case AD_TYPE_LACPDU:
 			pr_debug("Received LACPDU on port %d\n",
 				 port->actor_port_number);
+			/* Protect against concurrent state machines */
+			__get_state_machine_lock(port);
 			ad_rx_machine(lacpdu, port);
+			__release_state_machine_lock(port);
 			break;
 
 		case AD_TYPE_MARKER:
diff --git a/drivers/net/bonding/bond_3ad.h b/drivers/net/bonding/bond_3ad.h
index 2c46a154f2c6..b28baff70864 100644
--- a/drivers/net/bonding/bond_3ad.h
+++ b/drivers/net/bonding/bond_3ad.h
@@ -264,7 +264,8 @@ struct ad_bond_info {
 struct ad_slave_info {
 	struct aggregator aggregator;	    // 802.3ad aggregator structure
 	struct port port;		    // 802.3ad port structure
-	spinlock_t rx_machine_lock; // To avoid race condition between callback and receive interrupt
+	spinlock_t state_machine_lock; /* mutex state machines vs.
+					  incoming LACPDU */
 	u16 id;
 };
 
diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c
index 2300e4599520..6696e56e6320 100644
--- a/drivers/net/macvtap.c
+++ b/drivers/net/macvtap.c
@@ -530,8 +530,9 @@ static ssize_t macvtap_get_user(struct macvtap_queue *q,
 		vnet_hdr_len = q->vnet_hdr_sz;
 
 		err = -EINVAL;
-		if ((len -= vnet_hdr_len) < 0)
+		if (len < vnet_hdr_len)
 			goto err;
+		len -= vnet_hdr_len;
 
 		err = memcpy_fromiovecend((void *)&vnet_hdr, iv, 0,
 					   sizeof(vnet_hdr));
diff --git a/drivers/net/smsc911x.c b/drivers/net/smsc911x.c
index 64bfdae5956f..d70bde95460b 100644
--- a/drivers/net/smsc911x.c
+++ b/drivers/net/smsc911x.c
@@ -1178,6 +1178,11 @@ static int smsc911x_open(struct net_device *dev)
 	smsc911x_reg_write(pdata, HW_CFG, 0x00050000);
 	smsc911x_reg_write(pdata, AFC_CFG, 0x006E3740);
 
+	/* Increase the legal frame size of VLAN tagged frames to 1522 bytes */
+	spin_lock_irq(&pdata->mac_lock);
+	smsc911x_mac_write(pdata, VLAN1, ETH_P_8021Q);
+	spin_unlock_irq(&pdata->mac_lock);
+
 	/* Make sure EEPROM has finished loading before setting GPIO_CFG */
 	timeout = 50;
 	while ((smsc911x_reg_read(pdata, E2P_CMD) & E2P_CMD_EPC_BUSY_) &&