Merge tag 'mlx5-fixes-2018-01-11' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
Mellanox, mlx5 fixes 2018-01-11

The following series includes fixes to mlx5 core and netdev driver.
To highlight we have two critical fixes in this series:
1st patch from Eran to address a fix for Host2BMC Breakage.

2nd patch from Saeed to address the RDMA IRQ vector affinity settings query
issue, the patch provides the correct mlx5_core implementation for RDMA to
correctly  query vector affinity.
I sent this patch privately to Sagi a week a go, so he could to test it
but I didn't hear from him.

All other patches are trivial misc fixes.
Please pull and let me know if there's any problem.

for -stable v4.14-y and later:
("net/mlx5: Fix get vector affinity helper function")
("{net,ib}/mlx5: Don't disable local loopback multicast traffic when needed")

Note: Merging this series with net-next will produce the following conflict:
<<<<<<< HEAD
        u8         disable_local_lb[0x1];
        u8         reserved_at_3e2[0x1];
        u8         log_min_hairpin_wq_data_sz[0x5];
        u8         reserved_at_3e8[0x3];
=======
        u8         disable_local_lb_uc[0x1];
        u8         disable_local_lb_mc[0x1];
        u8         reserved_at_3e3[0x8];
>>>>>>> 359c96447ac2297fabe15ef30b60f3b4b71e7fd0

To resolve, use the following hunk:
i.e:
<<<<<<
        u8         disable_local_lb_uc[0x1];
        u8         disable_local_lb_mc[0x1];
        u8         log_min_hairpin_wq_data_sz[0x5];
        u8         reserved_at_3e8[0x3];
>>>>>>
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/infiniband/hw/mlx5/main.c

@@ -1324,7 +1324,8 @@ static int mlx5_ib_alloc_transport_domain(struct mlx5_ib_dev *dev, u32 *tdn)
 		return err;
 
 	if ((MLX5_CAP_GEN(dev->mdev, port_type) != MLX5_CAP_PORT_TYPE_ETH) ||
-	    !MLX5_CAP_GEN(dev->mdev, disable_local_lb))
+	    (!MLX5_CAP_GEN(dev->mdev, disable_local_lb_uc) &&
+	     !MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc)))
 		return err;
 
 	mutex_lock(&dev->lb_mutex);
@@ -1342,7 +1343,8 @@ static void mlx5_ib_dealloc_transport_domain(struct mlx5_ib_dev *dev, u32 tdn)
 	mlx5_core_dealloc_transport_domain(dev->mdev, tdn);
 
 	if ((MLX5_CAP_GEN(dev->mdev, port_type) != MLX5_CAP_PORT_TYPE_ETH) ||
-	    !MLX5_CAP_GEN(dev->mdev, disable_local_lb))
+	    (!MLX5_CAP_GEN(dev->mdev, disable_local_lb_uc) &&
+	     !MLX5_CAP_GEN(dev->mdev, disable_local_lb_mc)))
 		return;
 
 	mutex_lock(&dev->lb_mutex);
@@ -4158,7 +4160,7 @@ static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
 		goto err_cnt;
 
 	dev->mdev->priv.uar = mlx5_get_uars_page(dev->mdev);
-	if (!dev->mdev->priv.uar)
+	if (IS_ERR(dev->mdev->priv.uar))
 		goto err_cong;
 
 	err = mlx5_alloc_bfreg(dev->mdev, &dev->bfreg, false, false);
@@ -4187,7 +4189,8 @@ static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
 	}
 
 	if ((MLX5_CAP_GEN(mdev, port_type) == MLX5_CAP_PORT_TYPE_ETH) &&
-	    MLX5_CAP_GEN(mdev, disable_local_lb))
+	    (MLX5_CAP_GEN(mdev, disable_local_lb_uc) ||
+	     MLX5_CAP_GEN(mdev, disable_local_lb_mc)))
 		mutex_init(&dev->lb_mutex);
 
 	dev->ib_active = true;

drivers/net/ethernet/mellanox/mlx5/core/en.h

@@ -895,7 +895,7 @@ int mlx5e_vlan_rx_kill_vid(struct net_device *dev, __always_unused __be16 proto,
 			   u16 vid);
 void mlx5e_enable_cvlan_filter(struct mlx5e_priv *priv);
 void mlx5e_disable_cvlan_filter(struct mlx5e_priv *priv);
-void mlx5e_timestamp_set(struct mlx5e_priv *priv);
+void mlx5e_timestamp_init(struct mlx5e_priv *priv);
 
 struct mlx5e_redirect_rqt_param {
 	bool is_rss;

drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c

@@ -922,8 +922,9 @@ static void mlx5e_dcbnl_query_dcbx_mode(struct mlx5e_priv *priv,
 
 static void mlx5e_ets_init(struct mlx5e_priv *priv)
 {
-	int i;
 	struct ieee_ets ets;
+	int err;
+	int i;
 
 	if (!MLX5_CAP_GEN(priv->mdev, ets))
 		return;
@@ -936,11 +937,16 @@ static void mlx5e_ets_init(struct mlx5e_priv *priv)
 		ets.prio_tc[i] = i;
 	}
 
+	if (ets.ets_cap > 1) {
 		/* tclass[prio=0]=1, tclass[prio=1]=0, tclass[prio=i]=i (for i>1) */
 		ets.prio_tc[0] = 1;
 		ets.prio_tc[1] = 0;
+	}
 
-	mlx5e_dcbnl_ieee_setets_core(priv, &ets);
+	err = mlx5e_dcbnl_ieee_setets_core(priv, &ets);
+	if (err)
+		netdev_err(priv->netdev,
+			   "%s, Failed to init ETS: %d\n", __func__, err);
 }
 
 enum {

drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c

@@ -207,7 +207,6 @@ void mlx5e_ethtool_get_ethtool_stats(struct mlx5e_priv *priv,
 		return;
 
 	mutex_lock(&priv->state_lock);
-	if (test_bit(MLX5E_STATE_OPENED, &priv->state))
 	mlx5e_update_stats(priv, true);
 	mutex_unlock(&priv->state_lock);
 

drivers/net/ethernet/mellanox/mlx5/core/en_main.c

@@ -2669,7 +2669,7 @@ void mlx5e_switch_priv_channels(struct mlx5e_priv *priv,
 		netif_carrier_on(netdev);
 }
 
-void mlx5e_timestamp_set(struct mlx5e_priv *priv)
+void mlx5e_timestamp_init(struct mlx5e_priv *priv)
 {
 	priv->tstamp.tx_type   = HWTSTAMP_TX_OFF;
 	priv->tstamp.rx_filter = HWTSTAMP_FILTER_NONE;
@@ -2690,7 +2690,6 @@ int mlx5e_open_locked(struct net_device *netdev)
 	mlx5e_activate_priv_channels(priv);
 	if (priv->profile->update_carrier)
 		priv->profile->update_carrier(priv);
-	mlx5e_timestamp_set(priv);
 
 	if (priv->profile->update_stats)
 		queue_delayed_work(priv->wq, &priv->update_stats_work, 0);
@@ -3219,12 +3218,12 @@ static int mlx5e_set_mac(struct net_device *netdev, void *addr)
 	return 0;
 }
 
-#define MLX5E_SET_FEATURE(netdev, feature, enable)	\
+#define MLX5E_SET_FEATURE(features, feature, enable)	\
 	do {						\
 		if (enable)				\
-			netdev->features |= feature;	\
+			*features |= feature;		\
 		else					\
-			netdev->features &= ~feature;	\
+			*features &= ~feature;		\
 	} while (0)
 
 typedef int (*mlx5e_feature_handler)(struct net_device *netdev, bool enable);
@@ -3347,6 +3346,7 @@ static int set_feature_arfs(struct net_device *netdev, bool enable)
 #endif
 
 static int mlx5e_handle_feature(struct net_device *netdev,
+				netdev_features_t *features,
 				netdev_features_t wanted_features,
 				netdev_features_t feature,
 				mlx5e_feature_handler feature_handler)
@@ -3365,34 +3365,40 @@ static int mlx5e_handle_feature(struct net_device *netdev,
 		return err;
 	}
 
-	MLX5E_SET_FEATURE(netdev, feature, enable);
+	MLX5E_SET_FEATURE(features, feature, enable);
 	return 0;
 }
 
 static int mlx5e_set_features(struct net_device *netdev,
 			      netdev_features_t features)
 {
+	netdev_features_t oper_features = netdev->features;
 	int err;
 
-	err  = mlx5e_handle_feature(netdev, features, NETIF_F_LRO,
-				    set_feature_lro);
-	err |= mlx5e_handle_feature(netdev, features,
+	err  = mlx5e_handle_feature(netdev, &oper_features, features,
+				    NETIF_F_LRO, set_feature_lro);
+	err |= mlx5e_handle_feature(netdev, &oper_features, features,
 				    NETIF_F_HW_VLAN_CTAG_FILTER,
 				    set_feature_cvlan_filter);
-	err |= mlx5e_handle_feature(netdev, features, NETIF_F_HW_TC,
-				    set_feature_tc_num_filters);
-	err |= mlx5e_handle_feature(netdev, features, NETIF_F_RXALL,
-				    set_feature_rx_all);
-	err |= mlx5e_handle_feature(netdev, features, NETIF_F_RXFCS,
-				    set_feature_rx_fcs);
-	err |= mlx5e_handle_feature(netdev, features, NETIF_F_HW_VLAN_CTAG_RX,
-				    set_feature_rx_vlan);
+	err |= mlx5e_handle_feature(netdev, &oper_features, features,
+				    NETIF_F_HW_TC, set_feature_tc_num_filters);
+	err |= mlx5e_handle_feature(netdev, &oper_features, features,
+				    NETIF_F_RXALL, set_feature_rx_all);
+	err |= mlx5e_handle_feature(netdev, &oper_features, features,
+				    NETIF_F_RXFCS, set_feature_rx_fcs);
+	err |= mlx5e_handle_feature(netdev, &oper_features, features,
+				    NETIF_F_HW_VLAN_CTAG_RX, set_feature_rx_vlan);
 #ifdef CONFIG_RFS_ACCEL
-	err |= mlx5e_handle_feature(netdev, features, NETIF_F_NTUPLE,
-				    set_feature_arfs);
+	err |= mlx5e_handle_feature(netdev, &oper_features, features,
+				    NETIF_F_NTUPLE, set_feature_arfs);
 #endif
 
-	return err ? -EINVAL : 0;
+	if (err) {
+		netdev->features = oper_features;
+		return -EINVAL;
+	}
+
+	return 0;
 }
 
 static netdev_features_t mlx5e_fix_features(struct net_device *netdev,
@@ -4139,6 +4145,8 @@ static void mlx5e_build_nic_netdev_priv(struct mlx5_core_dev *mdev,
 	INIT_WORK(&priv->set_rx_mode_work, mlx5e_set_rx_mode_work);
 	INIT_WORK(&priv->tx_timeout_work, mlx5e_tx_timeout_work);
 	INIT_DELAYED_WORK(&priv->update_stats_work, mlx5e_update_stats_work);
+
+	mlx5e_timestamp_init(priv);
 }
 
 static void mlx5e_set_netdev_dev_addr(struct net_device *netdev)

drivers/net/ethernet/mellanox/mlx5/core/en_rep.c

@@ -877,6 +877,8 @@ static void mlx5e_init_rep(struct mlx5_core_dev *mdev,
 
 	mlx5e_build_rep_params(mdev, &priv->channels.params);
 	mlx5e_build_rep_netdev(netdev);
+
+	mlx5e_timestamp_init(priv);
 }
 
 static int mlx5e_init_rep_rx(struct mlx5e_priv *priv)

drivers/net/ethernet/mellanox/mlx5/core/en_selftest.c

@@ -238,15 +238,19 @@ static int mlx5e_test_loopback_setup(struct mlx5e_priv *priv,
 	int err = 0;
 
 	/* Temporarily enable local_lb */
-	if (MLX5_CAP_GEN(priv->mdev, disable_local_lb)) {
-		mlx5_nic_vport_query_local_lb(priv->mdev, &lbtp->local_lb);
-		if (!lbtp->local_lb)
-			mlx5_nic_vport_update_local_lb(priv->mdev, true);
+	err = mlx5_nic_vport_query_local_lb(priv->mdev, &lbtp->local_lb);
+	if (err)
+		return err;
+
+	if (!lbtp->local_lb) {
+		err = mlx5_nic_vport_update_local_lb(priv->mdev, true);
+		if (err)
+			return err;
 	}
 
 	err = mlx5e_refresh_tirs(priv, true);
 	if (err)
-		return err;
+		goto out;
 
 	lbtp->loopback_ok = false;
 	init_completion(&lbtp->comp);
@@ -256,16 +260,21 @@ static int mlx5e_test_loopback_setup(struct mlx5e_priv *priv,
 	lbtp->pt.dev = priv->netdev;
 	lbtp->pt.af_packet_priv = lbtp;
 	dev_add_pack(&lbtp->pt);
+
+	return 0;
+
+out:
+	if (!lbtp->local_lb)
+		mlx5_nic_vport_update_local_lb(priv->mdev, false);
+
 	return err;
 }
 
 static void mlx5e_test_loopback_cleanup(struct mlx5e_priv *priv,
 					struct mlx5e_lbt_priv *lbtp)
 {
-	if (MLX5_CAP_GEN(priv->mdev, disable_local_lb)) {
 	if (!lbtp->local_lb)
 		mlx5_nic_vport_update_local_lb(priv->mdev, false);
-	}
 
 	dev_remove_pack(&lbtp->pt);
 	mlx5e_refresh_tirs(priv, false);

drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c

@@ -86,6 +86,8 @@ void mlx5i_init(struct mlx5_core_dev *mdev,
 	mlx5e_build_nic_params(mdev, &priv->channels.params, profile->max_nch(mdev));
 	mlx5i_build_nic_params(mdev, &priv->channels.params);
 
+	mlx5e_timestamp_init(priv);
+
 	/* netdev init */
 	netdev->hw_features    |= NETIF_F_SG;
 	netdev->hw_features    |= NETIF_F_IP_CSUM;
@@ -450,7 +452,6 @@ static int mlx5i_open(struct net_device *netdev)
 
 	mlx5e_refresh_tirs(epriv, false);
 	mlx5e_activate_priv_channels(epriv);
-	mlx5e_timestamp_set(epriv);
 
 	mutex_unlock(&epriv->state_lock);
 	return 0;

drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c

@@ -423,9 +423,13 @@ void mlx5_pps_event(struct mlx5_core_dev *mdev,
 
 	switch (clock->ptp_info.pin_config[pin].func) {
 	case PTP_PF_EXTTS:
+		ptp_event.index = pin;
+		ptp_event.timestamp = timecounter_cyc2time(&clock->tc,
+					be64_to_cpu(eqe->data.pps.time_stamp));
 		if (clock->pps_info.enabled) {
 			ptp_event.type = PTP_CLOCK_PPSUSR;
-			ptp_event.pps_times.ts_real = ns_to_timespec64(eqe->data.pps.time_stamp);
+			ptp_event.pps_times.ts_real =
+					ns_to_timespec64(ptp_event.timestamp);
 		} else {
 			ptp_event.type = PTP_CLOCK_EXTTS;
 		}

drivers/net/ethernet/mellanox/mlx5/core/main.c

@@ -319,6 +319,7 @@ static int mlx5_alloc_irq_vectors(struct mlx5_core_dev *dev)
 	struct mlx5_eq_table *table = &priv->eq_table;
 	int num_eqs = 1 << MLX5_CAP_GEN(dev, log_max_eq);
 	int nvec;
+	int err;
 
 	nvec = MLX5_CAP_GEN(dev, num_ports) * num_online_cpus() +
 	       MLX5_EQ_VEC_COMP_BASE;
@@ -328,21 +329,23 @@ static int mlx5_alloc_irq_vectors(struct mlx5_core_dev *dev)
 
 	priv->irq_info = kcalloc(nvec, sizeof(*priv->irq_info), GFP_KERNEL);
 	if (!priv->irq_info)
-		goto err_free_msix;
+		return -ENOMEM;
 
 	nvec = pci_alloc_irq_vectors(dev->pdev,
 			MLX5_EQ_VEC_COMP_BASE + 1, nvec,
 			PCI_IRQ_MSIX);
-	if (nvec < 0)
-		return nvec;
+	if (nvec < 0) {
+		err = nvec;
+		goto err_free_irq_info;
+	}
 
 	table->num_comp_vectors = nvec - MLX5_EQ_VEC_COMP_BASE;
 
 	return 0;
 
-err_free_msix:
+err_free_irq_info:
 	kfree(priv->irq_info);
-	return -ENOMEM;
+	return err;
 }
 
 static void mlx5_free_irq_vectors(struct mlx5_core_dev *dev)
@@ -578,8 +581,7 @@ static int mlx5_core_set_hca_defaults(struct mlx5_core_dev *dev)
 	int ret = 0;
 
 	/* Disable local_lb by default */
-	if ((MLX5_CAP_GEN(dev, port_type) == MLX5_CAP_PORT_TYPE_ETH) &&
-	    MLX5_CAP_GEN(dev, disable_local_lb))
+	if (MLX5_CAP_GEN(dev, port_type) == MLX5_CAP_PORT_TYPE_ETH)
 		ret = mlx5_nic_vport_update_local_lb(dev, false);
 
 	return ret;
@@ -1121,10 +1123,13 @@ static int mlx5_load_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv,
 		goto err_stop_poll;
 	}
 
-	if (boot && mlx5_init_once(dev, priv)) {
+	if (boot) {
+		err = mlx5_init_once(dev, priv);
+		if (err) {
 			dev_err(&pdev->dev, "sw objs init failed\n");
 			goto err_stop_poll;
 		}
+	}
 
 	err = mlx5_alloc_irq_vectors(dev);
 	if (err) {
@@ -1133,8 +1138,9 @@ static int mlx5_load_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv,
 	}
 
 	dev->priv.uar = mlx5_get_uars_page(dev);
-	if (!dev->priv.uar) {
+	if (IS_ERR(dev->priv.uar)) {
 		dev_err(&pdev->dev, "Failed allocating uar, aborting\n");
+		err = PTR_ERR(dev->priv.uar);
 		goto err_disable_msix;
 	}
 

drivers/net/ethernet/mellanox/mlx5/core/uar.c

@@ -168,18 +168,16 @@ struct mlx5_uars_page *mlx5_get_uars_page(struct mlx5_core_dev *mdev)
 	struct mlx5_uars_page *ret;
 
 	mutex_lock(&mdev->priv.bfregs.reg_head.lock);
-	if (list_empty(&mdev->priv.bfregs.reg_head.list)) {
-		ret = alloc_uars_page(mdev, false);
-		if (IS_ERR(ret)) {
-			ret = NULL;
-			goto out;
-		}
-		list_add(&ret->list, &mdev->priv.bfregs.reg_head.list);
-	} else {
+	if (!list_empty(&mdev->priv.bfregs.reg_head.list)) {
 		ret = list_first_entry(&mdev->priv.bfregs.reg_head.list,
 				       struct mlx5_uars_page, list);
 		kref_get(&ret->ref_count);
+		goto out;
 	}
+	ret = alloc_uars_page(mdev, false);
+	if (IS_ERR(ret))
+		goto out;
+	list_add(&ret->list, &mdev->priv.bfregs.reg_head.list);
 out:
 	mutex_unlock(&mdev->priv.bfregs.reg_head.lock);
 

drivers/net/ethernet/mellanox/mlx5/core/vport.c

@@ -908,23 +908,33 @@ int mlx5_nic_vport_update_local_lb(struct mlx5_core_dev *mdev, bool enable)
 	void *in;
 	int err;
 
-	mlx5_core_dbg(mdev, "%s local_lb\n", enable ? "enable" : "disable");
+	if (!MLX5_CAP_GEN(mdev, disable_local_lb_mc) &&
+	    !MLX5_CAP_GEN(mdev, disable_local_lb_uc))
+		return 0;
+
 	in = kvzalloc(inlen, GFP_KERNEL);
 	if (!in)
 		return -ENOMEM;
 
-	MLX5_SET(modify_nic_vport_context_in, in,
-		 field_select.disable_mc_local_lb, 1);
 	MLX5_SET(modify_nic_vport_context_in, in,
 		 nic_vport_context.disable_mc_local_lb, !enable);
+	MLX5_SET(modify_nic_vport_context_in, in,
+		 nic_vport_context.disable_uc_local_lb, !enable);
 
+	if (MLX5_CAP_GEN(mdev, disable_local_lb_mc))
 		MLX5_SET(modify_nic_vport_context_in, in,
-		 field_select.disable_uc_local_lb, 1);
+			 field_select.disable_mc_local_lb, 1);
+
+	if (MLX5_CAP_GEN(mdev, disable_local_lb_uc))
 		MLX5_SET(modify_nic_vport_context_in, in,
-		 nic_vport_context.disable_uc_local_lb, !enable);
+			 field_select.disable_uc_local_lb, 1);
 
 	err = mlx5_modify_nic_vport_context(mdev, in, inlen);
 
+	if (!err)
+		mlx5_core_dbg(mdev, "%s local_lb\n",
+			      enable ? "enable" : "disable");
+
 	kvfree(in);
 	return err;
 }

include/linux/mlx5/driver.h

@@ -36,6 +36,7 @@
 #include <linux/kernel.h>
 #include <linux/completion.h>
 #include <linux/pci.h>
+#include <linux/irq.h>
 #include <linux/spinlock_types.h>
 #include <linux/semaphore.h>
 #include <linux/slab.h>
@@ -1231,7 +1232,23 @@ enum {
 static inline const struct cpumask *
 mlx5_get_vector_affinity(struct mlx5_core_dev *dev, int vector)
 {
-	return pci_irq_get_affinity(dev->pdev, MLX5_EQ_VEC_COMP_BASE + vector);
+	const struct cpumask *mask;
+	struct irq_desc *desc;
+	unsigned int irq;
+	int eqn;
+	int err;
+
+	err = mlx5_vector2eqn(dev, vector, &eqn, &irq);
+	if (err)
+		return NULL;
+
+	desc = irq_to_desc(irq);
+#ifdef CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK
+	mask = irq_data_get_effective_affinity_mask(&desc->irq_data);
+#else
+	mask = desc->irq_common_data.affinity;
+#endif
+	return mask;
 }
 
 #endif /* MLX5_DRIVER_H */

include/linux/mlx5/mlx5_ifc.h

@@ -1027,8 +1027,9 @@ struct mlx5_ifc_cmd_hca_cap_bits {
 	u8         log_max_wq_sz[0x5];
 
 	u8         nic_vport_change_event[0x1];
-	u8         disable_local_lb[0x1];
-	u8         reserved_at_3e2[0x9];
+	u8         disable_local_lb_uc[0x1];
+	u8         disable_local_lb_mc[0x1];
+	u8         reserved_at_3e3[0x8];
 	u8         log_max_vlan_list[0x5];
 	u8         reserved_at_3f0[0x3];
 	u8         log_max_current_mc_list[0x5];