Merge tag 'mlx5-fixes-2019-12-05' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
Mellanox, mlx5 fixes 2019-12-05

This series introduces some fixes to mlx5 driver.

Please pull and let me know if there is any problem.

For -stable v4.19:
 ('net/mlx5e: Query global pause state before setting prio2buffer')

For -stable v5.3
 ('net/mlx5e: Fix SFF 8472 eeprom length')
 ('net/mlx5e: Fix translation of link mode into speed')
 ('net/mlx5e: Fix freeing flow with kfree() and not kvfree()')
 ('net/mlx5e: ethtool, Fix analysis of speed setting')
 ('net/mlx5e: Fix TXQ indices to be sequential')
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

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

@@ -816,7 +816,7 @@ struct mlx5e_xsk {
 struct mlx5e_priv {
 	/* priv data path fields - start */
 	struct mlx5e_txqsq *txq2sq[MLX5E_MAX_NUM_CHANNELS * MLX5E_MAX_NUM_TC];
-	int channel_tc2txq[MLX5E_MAX_NUM_CHANNELS][MLX5E_MAX_NUM_TC];
+	int channel_tc2realtxq[MLX5E_MAX_NUM_CHANNELS][MLX5E_MAX_NUM_TC];
 #ifdef CONFIG_MLX5_CORE_EN_DCB
 	struct mlx5e_dcbx_dp       dcbx_dp;
 #endif

drivers/net/ethernet/mellanox/mlx5/core/en/port.c

@@ -73,6 +73,7 @@ static const u32 mlx5e_ext_link_speed[MLX5E_EXT_LINK_MODES_NUMBER] = {
 	[MLX5E_50GAUI_2_LAUI_2_50GBASE_CR2_KR2]	= 50000,
 	[MLX5E_50GAUI_1_LAUI_1_50GBASE_CR_KR]	= 50000,
 	[MLX5E_CAUI_4_100GBASE_CR4_KR4]		= 100000,
+	[MLX5E_100GAUI_2_100GBASE_CR2_KR2]	= 100000,
 	[MLX5E_200GAUI_4_200GBASE_CR4_KR4]	= 200000,
 	[MLX5E_400GAUI_8]			= 400000,
 };

drivers/net/ethernet/mellanox/mlx5/core/en/port_buffer.c

@@ -155,8 +155,11 @@ static int update_xoff_threshold(struct mlx5e_port_buffer *port_buffer,
 		}
 
 		if (port_buffer->buffer[i].size <
-		    (xoff + max_mtu + (1 << MLX5E_BUFFER_CELL_SHIFT)))
+		    (xoff + max_mtu + (1 << MLX5E_BUFFER_CELL_SHIFT))) {
+			pr_err("buffer_size[%d]=%d is not enough for lossless buffer\n",
+			       i, port_buffer->buffer[i].size);
 			return -ENOMEM;
+		}
 
 		port_buffer->buffer[i].xoff = port_buffer->buffer[i].size - xoff;
 		port_buffer->buffer[i].xon  =
@@ -232,6 +235,26 @@ static int update_buffer_lossy(unsigned int max_mtu,
 	return 0;
 }
 
+static int fill_pfc_en(struct mlx5_core_dev *mdev, u8 *pfc_en)
+{
+	u32 g_rx_pause, g_tx_pause;
+	int err;
+
+	err = mlx5_query_port_pause(mdev, &g_rx_pause, &g_tx_pause);
+	if (err)
+		return err;
+
+	/* If global pause enabled, set all active buffers to lossless.
+	 * Otherwise, check PFC setting.
+	 */
+	if (g_rx_pause || g_tx_pause)
+		*pfc_en = 0xff;
+	else
+		err = mlx5_query_port_pfc(mdev, pfc_en, NULL);
+
+	return err;
+}
+
 #define MINIMUM_MAX_MTU 9216
 int mlx5e_port_manual_buffer_config(struct mlx5e_priv *priv,
 				    u32 change, unsigned int mtu,
@@ -277,7 +300,7 @@ int mlx5e_port_manual_buffer_config(struct mlx5e_priv *priv,
 
 	if (change & MLX5E_PORT_BUFFER_PRIO2BUFFER) {
 		update_prio2buffer = true;
-		err = mlx5_query_port_pfc(priv->mdev, &curr_pfc_en, NULL);
+		err = fill_pfc_en(priv->mdev, &curr_pfc_en);
 		if (err)
 			return err;
 

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

@@ -1027,18 +1027,11 @@ static bool ext_link_mode_requested(const unsigned long *adver)
 	return bitmap_intersects(modes, adver, __ETHTOOL_LINK_MODE_MASK_NBITS);
 }
 
-static bool ext_speed_requested(u32 speed)
-{
-#define MLX5E_MAX_PTYS_LEGACY_SPEED 100000
-	return !!(speed > MLX5E_MAX_PTYS_LEGACY_SPEED);
-}
-
-static bool ext_requested(u8 autoneg, const unsigned long *adver, u32 speed)
+static bool ext_requested(u8 autoneg, const unsigned long *adver, bool ext_supported)
 {
 	bool ext_link_mode = ext_link_mode_requested(adver);
-	bool ext_speed = ext_speed_requested(speed);
 
-	return  autoneg == AUTONEG_ENABLE ? ext_link_mode : ext_speed;
+	return  autoneg == AUTONEG_ENABLE ? ext_link_mode : ext_supported;
 }
 
 int mlx5e_ethtool_set_link_ksettings(struct mlx5e_priv *priv,
@@ -1065,8 +1058,8 @@ int mlx5e_ethtool_set_link_ksettings(struct mlx5e_priv *priv,
 	autoneg = link_ksettings->base.autoneg;
 	speed = link_ksettings->base.speed;
 
-	ext = ext_requested(autoneg, adver, speed),
 	ext_supported = MLX5_CAP_PCAM_FEATURE(mdev, ptys_extended_ethernet);
+	ext = ext_requested(autoneg, adver, ext_supported);
 	if (!ext_supported && ext)
 		return -EOPNOTSUPP;
 
@@ -1643,7 +1636,7 @@ static int mlx5e_get_module_info(struct net_device *netdev,
 		break;
 	case MLX5_MODULE_ID_SFP:
 		modinfo->type       = ETH_MODULE_SFF_8472;
-		modinfo->eeprom_len = MLX5_EEPROM_PAGE_LENGTH;
+		modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
 		break;
 	default:
 		netdev_err(priv->netdev, "%s: cable type not recognized:0x%x\n",

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

@@ -1691,11 +1691,10 @@ static int mlx5e_open_sqs(struct mlx5e_channel *c,
 			  struct mlx5e_params *params,
 			  struct mlx5e_channel_param *cparam)
 {
-	struct mlx5e_priv *priv = c->priv;
 	int err, tc;
 
 	for (tc = 0; tc < params->num_tc; tc++) {
-		int txq_ix = c->ix + tc * priv->max_nch;
+		int txq_ix = c->ix + tc * params->num_channels;
 
 		err = mlx5e_open_txqsq(c, c->priv->tisn[c->lag_port][tc], txq_ix,
 				       params, &cparam->sq, &c->sq[tc], tc);
@@ -2876,26 +2875,21 @@ static void mlx5e_netdev_set_tcs(struct net_device *netdev)
 		netdev_set_tc_queue(netdev, tc, nch, 0);
 }
 
-static void mlx5e_build_tc2txq_maps(struct mlx5e_priv *priv)
+static void mlx5e_build_txq_maps(struct mlx5e_priv *priv)
 {
-	int i, tc;
+	int i, ch;
 
-	for (i = 0; i < priv->max_nch; i++)
-		for (tc = 0; tc < priv->profile->max_tc; tc++)
-			priv->channel_tc2txq[i][tc] = i + tc * priv->max_nch;
-}
+	ch = priv->channels.num;
 
-static void mlx5e_build_tx2sq_maps(struct mlx5e_priv *priv)
-{
-	struct mlx5e_channel *c;
-	struct mlx5e_txqsq *sq;
-	int i, tc;
+	for (i = 0; i < ch; i++) {
+		int tc;
+
+		for (tc = 0; tc < priv->channels.params.num_tc; tc++) {
+			struct mlx5e_channel *c = priv->channels.c[i];
+			struct mlx5e_txqsq *sq = &c->sq[tc];
 
-	for (i = 0; i < priv->channels.num; i++) {
-		c = priv->channels.c[i];
-		for (tc = 0; tc < c->num_tc; tc++) {
-			sq = &c->sq[tc];
 			priv->txq2sq[sq->txq_ix] = sq;
+			priv->channel_tc2realtxq[i][tc] = i + tc * ch;
 		}
 	}
 }
@@ -2910,7 +2904,7 @@ void mlx5e_activate_priv_channels(struct mlx5e_priv *priv)
 	netif_set_real_num_tx_queues(netdev, num_txqs);
 	netif_set_real_num_rx_queues(netdev, num_rxqs);
 
-	mlx5e_build_tx2sq_maps(priv);
+	mlx5e_build_txq_maps(priv);
 	mlx5e_activate_channels(&priv->channels);
 	mlx5e_xdp_tx_enable(priv);
 	netif_tx_start_all_queues(priv->netdev);
@@ -5021,7 +5015,6 @@ static int mlx5e_nic_init(struct mlx5_core_dev *mdev,
 	if (err)
 		mlx5_core_err(mdev, "TLS initialization failed, %d\n", err);
 	mlx5e_build_nic_netdev(netdev);
-	mlx5e_build_tc2txq_maps(priv);
 	mlx5e_health_create_reporters(priv);
 
 	return 0;

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

@@ -1601,7 +1601,7 @@ static int mlx5e_grp_channels_fill_strings(struct mlx5e_priv *priv, u8 *data,
 			for (j = 0; j < NUM_SQ_STATS; j++)
 				sprintf(data + (idx++) * ETH_GSTRING_LEN,
 					sq_stats_desc[j].format,
-					priv->channel_tc2txq[i][tc]);
+					i + tc * max_nch);
 
 	for (i = 0; i < max_nch; i++) {
 		for (j = 0; j < NUM_XSKSQ_STATS * is_xsk; j++)

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

@@ -1626,8 +1626,11 @@ static void __mlx5e_tc_del_fdb_peer_flow(struct mlx5e_tc_flow *flow)
 
 	flow_flag_clear(flow, DUP);
 
-	mlx5e_tc_del_fdb_flow(flow->peer_flow->priv, flow->peer_flow);
-	kvfree(flow->peer_flow);
+	if (refcount_dec_and_test(&flow->peer_flow->refcnt)) {
+		mlx5e_tc_del_fdb_flow(flow->peer_flow->priv, flow->peer_flow);
+		kfree(flow->peer_flow);
+	}
+
 	flow->peer_flow = NULL;
 }
 

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

@@ -93,7 +93,7 @@ u16 mlx5e_select_queue(struct net_device *dev, struct sk_buff *skb,
 	if (txq_ix >= num_channels)
 		txq_ix = priv->txq2sq[txq_ix]->ch_ix;
 
-	return priv->channel_tc2txq[txq_ix][up];
+	return priv->channel_tc2realtxq[txq_ix][up];
 }
 
 static inline int mlx5e_skb_l2_header_offset(struct sk_buff *skb)

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

@@ -81,7 +81,14 @@ struct vport_ingress {
 		struct mlx5_fc *drop_counter;
 	} legacy;
 	struct {
-		struct mlx5_flow_group *metadata_grp;
+		/* Optional group to add an FTE to do internal priority
+		 * tagging on ingress packets.
+		 */
+		struct mlx5_flow_group *metadata_prio_tag_grp;
+		/* Group to add default match-all FTE entry to tag ingress
+		 * packet with metadata.
+		 */
+		struct mlx5_flow_group *metadata_allmatch_grp;
 		struct mlx5_modify_hdr *modify_metadata;
 		struct mlx5_flow_handle *modify_metadata_rule;
 	} offloads;

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

@@ -88,6 +88,14 @@ u16 mlx5_eswitch_get_prio_range(struct mlx5_eswitch *esw)
 	return 1;
 }
 
+static bool
+esw_check_ingress_prio_tag_enabled(const struct mlx5_eswitch *esw,
+				   const struct mlx5_vport *vport)
+{
+	return (MLX5_CAP_GEN(esw->dev, prio_tag_required) &&
+		mlx5_eswitch_is_vf_vport(esw, vport->vport));
+}
+
 static void
 mlx5_eswitch_set_rule_source_port(struct mlx5_eswitch *esw,
 				  struct mlx5_flow_spec *spec,
@@ -1760,12 +1768,9 @@ static int esw_vport_ingress_prio_tag_config(struct mlx5_eswitch *esw,
 	 * required, allow
 	 * Unmatched traffic is allowed by default
 	 */
-
 	spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
-	if (!spec) {
-		err = -ENOMEM;
-		goto out_no_mem;
-	}
+	if (!spec)
+		return -ENOMEM;
 
 	/* Untagged packets - push prio tag VLAN, allow */
 	MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria, outer_headers.cvlan_tag);
@@ -1791,14 +1796,9 @@ static int esw_vport_ingress_prio_tag_config(struct mlx5_eswitch *esw,
 			 "vport[%d] configure ingress untagged allow rule, err(%d)\n",
 			 vport->vport, err);
 		vport->ingress.allow_rule = NULL;
-		goto out;
 	}
 
-out:
 	kvfree(spec);
-out_no_mem:
-	if (err)
-		esw_vport_cleanup_ingress_rules(esw, vport);
 	return err;
 }
 
@@ -1836,13 +1836,9 @@ static int esw_vport_add_ingress_acl_modify_metadata(struct mlx5_eswitch *esw,
 		esw_warn(esw->dev,
 			 "failed to add setting metadata rule for vport %d ingress acl, err(%d)\n",
 			 vport->vport, err);
+		mlx5_modify_header_dealloc(esw->dev, vport->ingress.offloads.modify_metadata);
 		vport->ingress.offloads.modify_metadata_rule = NULL;
-		goto out;
 	}
-
-out:
-	if (err)
-		mlx5_modify_header_dealloc(esw->dev, vport->ingress.offloads.modify_metadata);
 	return err;
 }
 
@@ -1862,50 +1858,103 @@ static int esw_vport_create_ingress_acl_group(struct mlx5_eswitch *esw,
 {
 	int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
 	struct mlx5_flow_group *g;
+	void *match_criteria;
 	u32 *flow_group_in;
+	u32 flow_index = 0;
 	int ret = 0;
 
 	flow_group_in = kvzalloc(inlen, GFP_KERNEL);
 	if (!flow_group_in)
 		return -ENOMEM;
 
-	memset(flow_group_in, 0, inlen);
-	MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, 0);
-	MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index, 0);
+	if (esw_check_ingress_prio_tag_enabled(esw, vport)) {
+		/* This group is to hold FTE to match untagged packets when prio_tag
+		 * is enabled.
+		 */
+		memset(flow_group_in, 0, inlen);
 
-	g = mlx5_create_flow_group(vport->ingress.acl, flow_group_in);
-	if (IS_ERR(g)) {
-		ret = PTR_ERR(g);
-		esw_warn(esw->dev,
-			 "Failed to create vport[%d] ingress metadata group, err(%d)\n",
-			 vport->vport, ret);
-		goto grp_err;
+		match_criteria = MLX5_ADDR_OF(create_flow_group_in,
+					      flow_group_in, match_criteria);
+		MLX5_SET(create_flow_group_in, flow_group_in,
+			 match_criteria_enable, MLX5_MATCH_OUTER_HEADERS);
+		MLX5_SET_TO_ONES(fte_match_param, match_criteria, outer_headers.cvlan_tag);
+		MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, flow_index);
+		MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index, flow_index);
+
+		g = mlx5_create_flow_group(vport->ingress.acl, flow_group_in);
+		if (IS_ERR(g)) {
+			ret = PTR_ERR(g);
+			esw_warn(esw->dev, "vport[%d] ingress create untagged flow group, err(%d)\n",
+				 vport->vport, ret);
+			goto prio_tag_err;
+		}
+		vport->ingress.offloads.metadata_prio_tag_grp = g;
+		flow_index++;
+	}
+
+	if (mlx5_eswitch_vport_match_metadata_enabled(esw)) {
+		/* This group holds an FTE with no matches for add metadata for
+		 * tagged packets, if prio-tag is enabled (as a fallthrough),
+		 * or all traffic in case prio-tag is disabled.
+		 */
+		memset(flow_group_in, 0, inlen);
+		MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, flow_index);
+		MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index, flow_index);
+
+		g = mlx5_create_flow_group(vport->ingress.acl, flow_group_in);
+		if (IS_ERR(g)) {
+			ret = PTR_ERR(g);
+			esw_warn(esw->dev, "vport[%d] ingress create drop flow group, err(%d)\n",
+				 vport->vport, ret);
+			goto metadata_err;
+		}
+		vport->ingress.offloads.metadata_allmatch_grp = g;
+	}
+
+	kvfree(flow_group_in);
+	return 0;
+
+metadata_err:
+	if (!IS_ERR_OR_NULL(vport->ingress.offloads.metadata_prio_tag_grp)) {
+		mlx5_destroy_flow_group(vport->ingress.offloads.metadata_prio_tag_grp);
+		vport->ingress.offloads.metadata_prio_tag_grp = NULL;
 	}
-	vport->ingress.offloads.metadata_grp = g;
-grp_err:
+prio_tag_err:
 	kvfree(flow_group_in);
 	return ret;
 }
 
 static void esw_vport_destroy_ingress_acl_group(struct mlx5_vport *vport)
 {
-	if (vport->ingress.offloads.metadata_grp) {
-		mlx5_destroy_flow_group(vport->ingress.offloads.metadata_grp);
-		vport->ingress.offloads.metadata_grp = NULL;
+	if (vport->ingress.offloads.metadata_allmatch_grp) {
+		mlx5_destroy_flow_group(vport->ingress.offloads.metadata_allmatch_grp);
+		vport->ingress.offloads.metadata_allmatch_grp = NULL;
+	}
+
+	if (vport->ingress.offloads.metadata_prio_tag_grp) {
+		mlx5_destroy_flow_group(vport->ingress.offloads.metadata_prio_tag_grp);
+		vport->ingress.offloads.metadata_prio_tag_grp = NULL;
 	}
 }
 
 static int esw_vport_ingress_config(struct mlx5_eswitch *esw,
 				    struct mlx5_vport *vport)
 {
+	int num_ftes = 0;
 	int err;
 
 	if (!mlx5_eswitch_vport_match_metadata_enabled(esw) &&
-	    !MLX5_CAP_GEN(esw->dev, prio_tag_required))
+	    !esw_check_ingress_prio_tag_enabled(esw, vport))
 		return 0;
 
 	esw_vport_cleanup_ingress_rules(esw, vport);
-	err = esw_vport_create_ingress_acl_table(esw, vport, 1);
+
+	if (mlx5_eswitch_vport_match_metadata_enabled(esw))
+		num_ftes++;
+	if (esw_check_ingress_prio_tag_enabled(esw, vport))
+		num_ftes++;
+
+	err = esw_vport_create_ingress_acl_table(esw, vport, num_ftes);
 	if (err) {
 		esw_warn(esw->dev,
 			 "failed to enable ingress acl (%d) on vport[%d]\n",
@@ -1926,8 +1975,7 @@ static int esw_vport_ingress_config(struct mlx5_eswitch *esw,
 			goto metadata_err;
 	}
 
-	if (MLX5_CAP_GEN(esw->dev, prio_tag_required) &&
-	    mlx5_eswitch_is_vf_vport(esw, vport->vport)) {
+	if (esw_check_ingress_prio_tag_enabled(esw, vport)) {
 		err = esw_vport_ingress_prio_tag_config(esw, vport);
 		if (err)
 			goto prio_tag_err;
@@ -1937,7 +1985,6 @@ static int esw_vport_ingress_config(struct mlx5_eswitch *esw,
 prio_tag_err:
 	esw_vport_del_ingress_acl_modify_metadata(esw, vport);
 metadata_err:
-	esw_vport_cleanup_ingress_rules(esw, vport);
 	esw_vport_destroy_ingress_acl_group(vport);
 group_err:
 	esw_vport_destroy_ingress_acl_table(vport);
@@ -2008,8 +2055,9 @@ esw_vport_create_offloads_acl_tables(struct mlx5_eswitch *esw,
 	if (mlx5_eswitch_is_vf_vport(esw, vport->vport)) {
 		err = esw_vport_egress_config(esw, vport);
 		if (err) {
-			esw_vport_del_ingress_acl_modify_metadata(esw, vport);
 			esw_vport_cleanup_ingress_rules(esw, vport);
+			esw_vport_del_ingress_acl_modify_metadata(esw, vport);
+			esw_vport_destroy_ingress_acl_group(vport);
 			esw_vport_destroy_ingress_acl_table(vport);
 		}
 	}
@@ -2021,8 +2069,8 @@ esw_vport_destroy_offloads_acl_tables(struct mlx5_eswitch *esw,
 				      struct mlx5_vport *vport)
 {
 	esw_vport_disable_egress_acl(esw, vport);
-	esw_vport_del_ingress_acl_modify_metadata(esw, vport);
 	esw_vport_cleanup_ingress_rules(esw, vport);
+	esw_vport_del_ingress_acl_modify_metadata(esw, vport);
 	esw_vport_destroy_ingress_acl_group(vport);
 	esw_vport_destroy_ingress_acl_table(vport);
 }