From d237baa1cbb3a2335357484c1d63a810a01947e2 Mon Sep 17 00:00:00 2001
From: Shani Michaeli <shanim@mellanox.com>
Date: Thu, 5 Mar 2015 20:16:12 +0200
Subject: net/mlx4_core: Add basic elements for QCN

Add device capability, firmware command opcode and etc prior elements
needed for QCN suppprt. Disable SRIOV VF view/access for QCN is disabled.

While here, remove a redundant offset definition into the
QUERY_DEV_CAP mailbox.

Signed-off-by: Shani Michaeli <shanim@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/mellanox/mlx4/fw.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

(limited to 'drivers/net/ethernet/mellanox/mlx4/fw.c')

diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index 5a21e5dc94cb..242bcee5d774 100644
--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -143,7 +143,8 @@ static void dump_dev_cap_flags2(struct mlx4_dev *dev, u64 flags)
 		[18] = "More than 80 VFs support",
 		[19] = "Performance optimized for limited rule configuration flow steering support",
 		[20] = "Recoverable error events support",
-		[21] = "Port Remap support"
+		[21] = "Port Remap support",
+		[22] = "QCN support"
 	};
 	int i;
 
@@ -675,7 +676,7 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
 #define QUERY_DEV_CAP_FLOW_STEERING_RANGE_EN_OFFSET	0x76
 #define QUERY_DEV_CAP_FLOW_STEERING_MAX_QP_OFFSET	0x77
 #define QUERY_DEV_CAP_CQ_EQ_CACHE_LINE_STRIDE	0x7a
-#define QUERY_DEV_CAP_ETH_PROT_CTRL_OFFSET	0x7a
+#define QUERY_DEV_CAP_ECN_QCN_VER_OFFSET	0x7b
 #define QUERY_DEV_CAP_RDMARC_ENTRY_SZ_OFFSET	0x80
 #define QUERY_DEV_CAP_QPC_ENTRY_SZ_OFFSET	0x82
 #define QUERY_DEV_CAP_AUX_ENTRY_SZ_OFFSET	0x84
@@ -777,6 +778,9 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
 		dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_DMFS_IPOIB;
 	MLX4_GET(field, outbox, QUERY_DEV_CAP_FLOW_STEERING_MAX_QP_OFFSET);
 	dev_cap->fs_max_num_qp_per_entry = field;
+	MLX4_GET(field, outbox, QUERY_DEV_CAP_ECN_QCN_VER_OFFSET);
+	if (field & 0x1)
+		dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_QCN;
 	MLX4_GET(stat_rate, outbox, QUERY_DEV_CAP_RATE_SUPPORT_OFFSET);
 	dev_cap->stat_rate_support = stat_rate;
 	MLX4_GET(field, outbox, QUERY_DEV_CAP_CQ_TS_SUPPORT_OFFSET);
@@ -1149,6 +1153,11 @@ int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave,
 		     DEV_CAP_EXT_2_FLAG_FSM);
 	MLX4_PUT(outbox->buf, field32, QUERY_DEV_CAP_EXT_2_FLAGS_OFFSET);
 
+	/* turn off QCN for guests */
+	MLX4_GET(field, outbox->buf, QUERY_DEV_CAP_ECN_QCN_VER_OFFSET);
+	field &= 0xfe;
+	MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_ECN_QCN_VER_OFFSET);
+
 	return 0;
 }
 
-- 
cgit v1.2.3


From fc31e2560a2443410fe45c27116fae736541a7b5 Mon Sep 17 00:00:00 2001
From: Or Gerlitz <ogerlitz@mellanox.com>
Date: Wed, 18 Mar 2015 14:57:34 +0200
Subject: net/mlx4_core: Add basic support for QP max-rate limiting

Add the low-level device commands and definitions used for QP max-rate limiting.

This is done through the following elements:

  - read rate-limit device caps in QUERY_DEV_CAP: number of different
    rates and the min/max rates in Kbs/Mbs/Gbs units

  - enhance the QP context struct to contain rate limit units and value

  - allow to do run time rate-limit setting to QPs through the
    update-qp firmware command

  - QP rate-limiting is disallowed for VFs

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/mellanox/mlx4/fw.c            | 33 +++++++++++++++++++++-
 drivers/net/ethernet/mellanox/mlx4/fw.h            |  1 +
 drivers/net/ethernet/mellanox/mlx4/main.c          |  2 ++
 drivers/net/ethernet/mellanox/mlx4/qp.c            |  5 ++++
 .../net/ethernet/mellanox/mlx4/resource_tracker.c  |  6 +++-
 include/linux/mlx4/device.h                        | 17 +++++++++++
 include/linux/mlx4/qp.h                            | 14 ++++++---
 7 files changed, 72 insertions(+), 6 deletions(-)

(limited to 'drivers/net/ethernet/mellanox/mlx4/fw.c')

diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index 242bcee5d774..4a471f5d1b56 100644
--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -144,7 +144,8 @@ static void dump_dev_cap_flags2(struct mlx4_dev *dev, u64 flags)
 		[19] = "Performance optimized for limited rule configuration flow steering support",
 		[20] = "Recoverable error events support",
 		[21] = "Port Remap support",
-		[22] = "QCN support"
+		[22] = "QCN support",
+		[23] = "QP rate limiting support"
 	};
 	int i;
 
@@ -697,6 +698,10 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
 #define QUERY_DEV_CAP_MAD_DEMUX_OFFSET		0xb0
 #define QUERY_DEV_CAP_DMFS_HIGH_RATE_QPN_BASE_OFFSET	0xa8
 #define QUERY_DEV_CAP_DMFS_HIGH_RATE_QPN_RANGE_OFFSET	0xac
+#define QUERY_DEV_CAP_QP_RATE_LIMIT_NUM_OFFSET	0xcc
+#define QUERY_DEV_CAP_QP_RATE_LIMIT_MAX_OFFSET	0xd0
+#define QUERY_DEV_CAP_QP_RATE_LIMIT_MIN_OFFSET	0xd2
+
 
 	dev_cap->flags2 = 0;
 	mailbox = mlx4_alloc_cmd_mailbox(dev);
@@ -904,6 +909,18 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
 		 QUERY_DEV_CAP_DMFS_HIGH_RATE_QPN_RANGE_OFFSET);
 	dev_cap->dmfs_high_rate_qpn_range &= MGM_QPN_MASK;
 
+	MLX4_GET(size, outbox, QUERY_DEV_CAP_QP_RATE_LIMIT_NUM_OFFSET);
+	dev_cap->rl_caps.num_rates = size;
+	if (dev_cap->rl_caps.num_rates) {
+		dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT;
+		MLX4_GET(size, outbox, QUERY_DEV_CAP_QP_RATE_LIMIT_MAX_OFFSET);
+		dev_cap->rl_caps.max_val  = size & 0xfff;
+		dev_cap->rl_caps.max_unit = size >> 14;
+		MLX4_GET(size, outbox, QUERY_DEV_CAP_QP_RATE_LIMIT_MIN_OFFSET);
+		dev_cap->rl_caps.min_val  = size & 0xfff;
+		dev_cap->rl_caps.min_unit = size >> 14;
+	}
+
 	MLX4_GET(field32, outbox, QUERY_DEV_CAP_EXT_2_FLAGS_OFFSET);
 	if (field32 & (1 << 16))
 		dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_UPDATE_QP;
@@ -979,6 +996,15 @@ void mlx4_dev_cap_dump(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
 		 dev_cap->dmfs_high_rate_qpn_base);
 	mlx4_dbg(dev, "DMFS high rate steer QPn range: %d\n",
 		 dev_cap->dmfs_high_rate_qpn_range);
+
+	if (dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT) {
+		struct mlx4_rate_limit_caps *rl_caps = &dev_cap->rl_caps;
+
+		mlx4_dbg(dev, "QP Rate-Limit: #rates %d, unit/val max %d/%d, min %d/%d\n",
+			 rl_caps->num_rates, rl_caps->max_unit, rl_caps->max_val,
+			 rl_caps->min_unit, rl_caps->min_val);
+	}
+
 	dump_dev_cap_flags(dev, dev_cap->flags);
 	dump_dev_cap_flags2(dev, dev_cap->flags2);
 }
@@ -1075,6 +1101,7 @@ int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave,
 	u64	flags;
 	int	err = 0;
 	u8	field;
+	u16	field16;
 	u32	bmme_flags, field32;
 	int	real_port;
 	int	slave_port;
@@ -1158,6 +1185,10 @@ int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave,
 	field &= 0xfe;
 	MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_ECN_QCN_VER_OFFSET);
 
+	/* turn off QP max-rate limiting for guests */
+	field16 = 0;
+	MLX4_PUT(outbox->buf, field16, QUERY_DEV_CAP_QP_RATE_LIMIT_NUM_OFFSET);
+
 	return 0;
 }
 
diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.h b/drivers/net/ethernet/mellanox/mlx4/fw.h
index f44f7f6017ed..863655bd3947 100644
--- a/drivers/net/ethernet/mellanox/mlx4/fw.h
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.h
@@ -127,6 +127,7 @@ struct mlx4_dev_cap {
 	u32 max_counters;
 	u32 dmfs_high_rate_qpn_base;
 	u32 dmfs_high_rate_qpn_range;
+	struct mlx4_rate_limit_caps rl_caps;
 	struct mlx4_port_cap port_cap[MLX4_MAX_PORTS + 1];
 };
 
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index 7e487223489a..43aa76775b5f 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -489,6 +489,8 @@ static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
 		dev->caps.dmfs_high_rate_qpn_range = MLX4_A0_STEERING_TABLE_SIZE;
 	}
 
+	dev->caps.rl_caps = dev_cap->rl_caps;
+
 	dev->caps.reserved_qps_cnt[MLX4_QP_REGION_RSS_RAW_ETH] =
 		dev->caps.dmfs_high_rate_qpn_range;
 
diff --git a/drivers/net/ethernet/mellanox/mlx4/qp.c b/drivers/net/ethernet/mellanox/mlx4/qp.c
index eda29dbbfcd2..69e4462e4ee4 100644
--- a/drivers/net/ethernet/mellanox/mlx4/qp.c
+++ b/drivers/net/ethernet/mellanox/mlx4/qp.c
@@ -442,6 +442,11 @@ int mlx4_update_qp(struct mlx4_dev *dev, u32 qpn,
 			cmd->qp_context.param3 |= cpu_to_be32(MLX4_STRIP_VLAN);
 	}
 
+	if (attr & MLX4_UPDATE_QP_RATE_LIMIT) {
+		qp_mask |= 1ULL << MLX4_UPD_QP_MASK_RATE_LIMIT;
+		cmd->qp_context.rate_limit_params = cpu_to_be16((params->rate_unit << 14) | params->rate_val);
+	}
+
 	cmd->primary_addr_path_mask = cpu_to_be64(pri_addr_path_mask);
 	cmd->qp_mask = cpu_to_be64(qp_mask);
 
diff --git a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
index d43e25914d19..c258f8625aac 100644
--- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
+++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
@@ -2947,8 +2947,12 @@ static int verify_qp_parameters(struct mlx4_dev *dev,
 	qp_type	= (be32_to_cpu(qp_ctx->flags) >> 16) & 0xff;
 	optpar	= be32_to_cpu(*(__be32 *) inbox->buf);
 
-	if (slave != mlx4_master_func_num(dev))
+	if (slave != mlx4_master_func_num(dev)) {
 		qp_ctx->params2 &= ~MLX4_QP_BIT_FPP;
+		/* setting QP rate-limit is disallowed for VFs */
+		if (qp_ctx->rate_limit_params)
+			return -EPERM;
+	}
 
 	switch (qp_type) {
 	case MLX4_QP_ST_RC:
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index 1cc54822b931..4550c67b92e4 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -205,6 +205,7 @@ enum {
 	MLX4_DEV_CAP_FLAG2_RECOVERABLE_ERROR_EVENT = 1LL << 20,
 	MLX4_DEV_CAP_FLAG2_PORT_REMAP		= 1LL <<  21,
 	MLX4_DEV_CAP_FLAG2_QCN			= 1LL <<  22,
+	MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT	= 1LL <<  23
 };
 
 enum {
@@ -450,6 +451,21 @@ enum mlx4_module_id {
 	MLX4_MODULE_ID_QSFP28           = 0x11,
 };
 
+enum { /* rl */
+	MLX4_QP_RATE_LIMIT_NONE		= 0,
+	MLX4_QP_RATE_LIMIT_KBS		= 1,
+	MLX4_QP_RATE_LIMIT_MBS		= 2,
+	MLX4_QP_RATE_LIMIT_GBS		= 3
+};
+
+struct mlx4_rate_limit_caps {
+	u16	num_rates; /* Number of different rates */
+	u8	min_unit;
+	u16	min_val;
+	u8	max_unit;
+	u16	max_val;
+};
+
 static inline u64 mlx4_fw_ver(u64 major, u64 minor, u64 subminor)
 {
 	return (major << 32) | (minor << 16) | subminor;
@@ -565,6 +581,7 @@ struct mlx4_caps {
 	u32			dmfs_high_rate_qpn_base;
 	u32			dmfs_high_rate_qpn_range;
 	u32			vf_caps;
+	struct mlx4_rate_limit_caps rl_caps;
 };
 
 struct mlx4_buf_list {
diff --git a/include/linux/mlx4/qp.h b/include/linux/mlx4/qp.h
index 551f85456c11..1023ebe035b7 100644
--- a/include/linux/mlx4/qp.h
+++ b/include/linux/mlx4/qp.h
@@ -207,14 +207,16 @@ struct mlx4_qp_context {
 	__be32			msn;
 	__be16			rq_wqe_counter;
 	__be16			sq_wqe_counter;
-	u32			reserved3[2];
+	u32			reserved3;
+	__be16			rate_limit_params;
+	__be16			reserved4;
 	__be32			param3;
 	__be32			nummmcpeers_basemkey;
 	u8			log_page_size;
-	u8			reserved4[2];
+	u8			reserved5[2];
 	u8			mtt_base_addr_h;
 	__be32			mtt_base_addr_l;
-	u32			reserved5[10];
+	u32			reserved6[10];
 };
 
 struct mlx4_update_qp_context {
@@ -229,6 +231,7 @@ struct mlx4_update_qp_context {
 enum {
 	MLX4_UPD_QP_MASK_PM_STATE	= 32,
 	MLX4_UPD_QP_MASK_VSD		= 33,
+	MLX4_UPD_QP_MASK_RATE_LIMIT	= 35,
 };
 
 enum {
@@ -428,7 +431,8 @@ struct mlx4_wqe_inline_seg {
 enum mlx4_update_qp_attr {
 	MLX4_UPDATE_QP_SMAC		= 1 << 0,
 	MLX4_UPDATE_QP_VSD		= 1 << 1,
-	MLX4_UPDATE_QP_SUPPORTED_ATTRS	= (1 << 2) - 1
+	MLX4_UPDATE_QP_RATE_LIMIT	= 1 << 2,
+	MLX4_UPDATE_QP_SUPPORTED_ATTRS	= (1 << 3) - 1
 };
 
 enum mlx4_update_qp_params_flags {
@@ -438,6 +442,8 @@ enum mlx4_update_qp_params_flags {
 struct mlx4_update_qp_params {
 	u8	smac_index;
 	u32	flags;
+	u16	rate_unit;
+	u16	rate_val;
 };
 
 int mlx4_update_qp(struct mlx4_dev *dev, u32 qpn,
-- 
cgit v1.2.3


From 0b131561a7d639abb0a194d2d8fae839ce3b99e9 Mon Sep 17 00:00:00 2001
From: Matan Barak <matanb@mellanox.com>
Date: Mon, 30 Mar 2015 17:45:25 +0300
Subject: net/mlx4_en: Add Flow control statistics display via ethtool

Flow control per priority and Global pause counters are now visible via
ethtool.  The counters shows statistics regarding pauses in the device.

Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Shani Michaeli <shanim@mellanox.com>
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c  |  4 ++
 drivers/net/ethernet/mellanox/mlx4/en_ethtool.c | 74 +++++++++++++++++++++++++
 drivers/net/ethernet/mellanox/mlx4/en_netdev.c  | 57 ++++++++++++++++++-
 drivers/net/ethernet/mellanox/mlx4/en_port.c    | 50 +++++++++++++++++
 drivers/net/ethernet/mellanox/mlx4/fw.c         | 10 +++-
 drivers/net/ethernet/mellanox/mlx4/mlx4_en.h    | 13 ++++-
 drivers/net/ethernet/mellanox/mlx4/mlx4_stats.h | 52 ++++++++++++++++-
 include/linux/mlx4/device.h                     |  3 +-
 8 files changed, 255 insertions(+), 8 deletions(-)

(limited to 'drivers/net/ethernet/mellanox/mlx4/fw.c')

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c b/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c
index cde14fa2f742..8e3260c0eaa5 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c
@@ -226,6 +226,10 @@ static int mlx4_en_dcbnl_ieee_setpfc(struct net_device *dev,
 				    prof->rx_ppp);
 	if (err)
 		en_err(priv, "Failed setting pause params\n");
+	else
+		mlx4_en_update_pfc_stats_bitmap(mdev->dev, &priv->stats_bitmap,
+						prof->rx_ppp, prof->rx_pause,
+						prof->tx_ppp, prof->tx_pause);
 
 	return err;
 }
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
index 3e7ed39e8e76..4fc767461b4f 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
@@ -119,6 +119,48 @@ static const char main_strings[][ETH_GSTRING_LEN] = {
 	"queue_stopped", "wake_queue", "tx_timeout", "rx_alloc_failed",
 	"rx_csum_good", "rx_csum_none", "rx_csum_complete", "tx_chksum_offload",
 
+	/* priority flow control statistics rx */
+	"rx_pause_prio_0", "rx_pause_duration_prio_0",
+	"rx_pause_transition_prio_0",
+	"rx_pause_prio_1", "rx_pause_duration_prio_1",
+	"rx_pause_transition_prio_1",
+	"rx_pause_prio_2", "rx_pause_duration_prio_2",
+	"rx_pause_transition_prio_2",
+	"rx_pause_prio_3", "rx_pause_duration_prio_3",
+	"rx_pause_transition_prio_3",
+	"rx_pause_prio_4", "rx_pause_duration_prio_4",
+	"rx_pause_transition_prio_4",
+	"rx_pause_prio_5", "rx_pause_duration_prio_5",
+	"rx_pause_transition_prio_5",
+	"rx_pause_prio_6", "rx_pause_duration_prio_6",
+	"rx_pause_transition_prio_6",
+	"rx_pause_prio_7", "rx_pause_duration_prio_7",
+	"rx_pause_transition_prio_7",
+
+	/* flow control statistics rx */
+	"rx_pause", "rx_pause_duration", "rx_pause_transition",
+
+	/* priority flow control statistics tx */
+	"tx_pause_prio_0", "tx_pause_duration_prio_0",
+	"tx_pause_transition_prio_0",
+	"tx_pause_prio_1", "tx_pause_duration_prio_1",
+	"tx_pause_transition_prio_1",
+	"tx_pause_prio_2", "tx_pause_duration_prio_2",
+	"tx_pause_transition_prio_2",
+	"tx_pause_prio_3", "tx_pause_duration_prio_3",
+	"tx_pause_transition_prio_3",
+	"tx_pause_prio_4", "tx_pause_duration_prio_4",
+	"tx_pause_transition_prio_4",
+	"tx_pause_prio_5", "tx_pause_duration_prio_5",
+	"tx_pause_transition_prio_5",
+	"tx_pause_prio_6", "tx_pause_duration_prio_6",
+	"tx_pause_transition_prio_6",
+	"tx_pause_prio_7", "tx_pause_duration_prio_7",
+	"tx_pause_transition_prio_7",
+
+	/* flow control statistics tx */
+	"tx_pause", "tx_pause_duration", "tx_pause_transition",
+
 	/* packet statistics */
 	"broadcast", "rx_prio_0", "rx_prio_1", "rx_prio_2", "rx_prio_3",
 	"rx_prio_4", "rx_prio_5", "rx_prio_6", "rx_prio_7", "tx_prio_0",
@@ -304,6 +346,26 @@ static void mlx4_en_get_ethtool_stats(struct net_device *dev,
 		if (bitmap_iterator_test(&it))
 			data[index++] = ((unsigned long *)&priv->port_stats)[i];
 
+	for (i = 0; i < NUM_FLOW_PRIORITY_STATS_RX;
+	     i++, bitmap_iterator_inc(&it))
+		if (bitmap_iterator_test(&it))
+			data[index++] =
+				((u64 *)&priv->rx_priority_flowstats)[i];
+
+	for (i = 0; i < NUM_FLOW_STATS_RX; i++, bitmap_iterator_inc(&it))
+		if (bitmap_iterator_test(&it))
+			data[index++] = ((u64 *)&priv->rx_flowstats)[i];
+
+	for (i = 0; i < NUM_FLOW_PRIORITY_STATS_TX;
+	     i++, bitmap_iterator_inc(&it))
+		if (bitmap_iterator_test(&it))
+			data[index++] =
+				((u64 *)&priv->tx_priority_flowstats)[i];
+
+	for (i = 0; i < NUM_FLOW_STATS_TX; i++, bitmap_iterator_inc(&it))
+		if (bitmap_iterator_test(&it))
+			data[index++] = ((u64 *)&priv->tx_flowstats)[i];
+
 	for (i = 0; i < NUM_PKT_STATS; i++, bitmap_iterator_inc(&it))
 		if (bitmap_iterator_test(&it))
 			data[index++] = ((unsigned long *)&priv->pkstats)[i];
@@ -364,6 +426,12 @@ static void mlx4_en_get_strings(struct net_device *dev,
 				strcpy(data + (index++) * ETH_GSTRING_LEN,
 				       main_strings[strings]);
 
+		for (i = 0; i < NUM_FLOW_STATS; i++, strings++,
+		     bitmap_iterator_inc(&it))
+			if (bitmap_iterator_test(&it))
+				strcpy(data + (index++) * ETH_GSTRING_LEN,
+				       main_strings[strings]);
+
 		for (i = 0; i < NUM_PKT_STATS; i++, strings++,
 		     bitmap_iterator_inc(&it))
 			if (bitmap_iterator_test(&it))
@@ -910,6 +978,12 @@ static int mlx4_en_set_pauseparam(struct net_device *dev,
 				    priv->prof->rx_ppp);
 	if (err)
 		en_err(priv, "Failed setting pause params\n");
+	else
+		mlx4_en_update_pfc_stats_bitmap(mdev->dev, &priv->stats_bitmap,
+						priv->prof->rx_ppp,
+						priv->prof->rx_pause,
+						priv->prof->tx_ppp,
+						priv->prof->tx_pause);
 
 	return err;
 }
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index 4542bab9494b..354e254b53cf 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -1888,6 +1888,12 @@ static void mlx4_en_clear_stats(struct net_device *dev)
 	memset(&priv->pstats, 0, sizeof(priv->pstats));
 	memset(&priv->pkstats, 0, sizeof(priv->pkstats));
 	memset(&priv->port_stats, 0, sizeof(priv->port_stats));
+	memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats));
+	memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats));
+	memset(&priv->rx_priority_flowstats, 0,
+	       sizeof(priv->rx_priority_flowstats));
+	memset(&priv->tx_priority_flowstats, 0,
+	       sizeof(priv->tx_priority_flowstats));
 
 	for (i = 0; i < priv->tx_ring_num; i++) {
 		priv->tx_ring[i]->bytes = 0;
@@ -2648,8 +2654,46 @@ int mlx4_en_netdev_event(struct notifier_block *this,
 	return NOTIFY_DONE;
 }
 
+void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev,
+				     struct mlx4_en_stats_bitmap *stats_bitmap,
+				     u8 rx_ppp, u8 rx_pause,
+				     u8 tx_ppp, u8 tx_pause)
+{
+	int last_i = NUM_MAIN_STATS + NUM_PORT_STATS;
+
+	if (!mlx4_is_slave(dev) &&
+	    (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) {
+		mutex_lock(&stats_bitmap->mutex);
+		bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS);
+
+		if (rx_ppp)
+			bitmap_set(stats_bitmap->bitmap, last_i,
+				   NUM_FLOW_PRIORITY_STATS_RX);
+		last_i += NUM_FLOW_PRIORITY_STATS_RX;
+
+		if (rx_pause && !(rx_ppp))
+			bitmap_set(stats_bitmap->bitmap, last_i,
+				   NUM_FLOW_STATS_RX);
+		last_i += NUM_FLOW_STATS_RX;
+
+		if (tx_ppp)
+			bitmap_set(stats_bitmap->bitmap, last_i,
+				   NUM_FLOW_PRIORITY_STATS_TX);
+		last_i += NUM_FLOW_PRIORITY_STATS_TX;
+
+		if (tx_pause && !(tx_ppp))
+			bitmap_set(stats_bitmap->bitmap, last_i,
+				   NUM_FLOW_STATS_TX);
+		last_i += NUM_FLOW_STATS_TX;
+
+		mutex_unlock(&stats_bitmap->mutex);
+	}
+}
+
 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
-			      struct mlx4_en_stats_bitmap *stats_bitmap)
+			      struct mlx4_en_stats_bitmap *stats_bitmap,
+			      u8 rx_ppp, u8 rx_pause,
+			      u8 tx_ppp, u8 tx_pause)
 {
 	int last_i = 0;
 
@@ -2677,6 +2721,11 @@ void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
 	bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS);
 	last_i += NUM_PORT_STATS;
 
+	mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap,
+					rx_ppp, rx_pause,
+					tx_ppp, tx_pause);
+	last_i += NUM_FLOW_STATS;
+
 	if (!mlx4_is_slave(dev))
 		bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS);
 }
@@ -2914,7 +2963,11 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
 		queue_delayed_work(mdev->workqueue, &priv->service_task,
 				   SERVICE_TASK_DELAY);
 
-	mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap);
+	mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap,
+				 mdev->profile.prof[priv->port].rx_ppp,
+				 mdev->profile.prof[priv->port].rx_pause,
+				 mdev->profile.prof[priv->port].tx_ppp,
+				 mdev->profile.prof[priv->port].tx_pause);
 
 	return 0;
 
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_port.c b/drivers/net/ethernet/mellanox/mlx4/en_port.c
index 6cb80072af6c..821ae1278dc9 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_port.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_port.c
@@ -131,6 +131,7 @@ out:
 int mlx4_en_DUMP_ETH_STATS(struct mlx4_en_dev *mdev, u8 port, u8 reset)
 {
 	struct mlx4_en_stat_out_mbox *mlx4_en_stats;
+	struct mlx4_en_stat_out_flow_control_mbox *flowstats;
 	struct mlx4_en_priv *priv = netdev_priv(mdev->pndev[port]);
 	struct net_device_stats *stats = &priv->stats;
 	struct mlx4_cmd_mailbox *mailbox;
@@ -239,6 +240,55 @@ int mlx4_en_DUMP_ETH_STATS(struct mlx4_en_dev *mdev, u8 port, u8 reset)
 	priv->pkstats.tx_prio[7] = be64_to_cpu(mlx4_en_stats->TTOT_prio_7);
 	spin_unlock_bh(&priv->stats_lock);
 
+	/* 0xffs indicates invalid value */
+	memset(mailbox->buf, 0xff, sizeof(*flowstats) * MLX4_NUM_PRIORITIES);
+
+	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN) {
+		memset(mailbox->buf, 0,
+		       sizeof(*flowstats) * MLX4_NUM_PRIORITIES);
+		err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma,
+				   in_mod | MLX4_DUMP_ETH_STATS_FLOW_CONTROL,
+				   0, MLX4_CMD_DUMP_ETH_STATS,
+				   MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED);
+		if (err)
+			goto out;
+	}
+
+	flowstats = mailbox->buf;
+
+	spin_lock_bh(&priv->stats_lock);
+
+	for (i = 0; i < MLX4_NUM_PRIORITIES; i++)	{
+		priv->rx_priority_flowstats[i].rx_pause =
+			be64_to_cpu(flowstats[i].rx_pause);
+		priv->rx_priority_flowstats[i].rx_pause_duration =
+			be64_to_cpu(flowstats[i].rx_pause_duration);
+		priv->rx_priority_flowstats[i].rx_pause_transition =
+			be64_to_cpu(flowstats[i].rx_pause_transition);
+		priv->tx_priority_flowstats[i].tx_pause =
+			be64_to_cpu(flowstats[i].tx_pause);
+		priv->tx_priority_flowstats[i].tx_pause_duration =
+			be64_to_cpu(flowstats[i].tx_pause_duration);
+		priv->tx_priority_flowstats[i].tx_pause_transition =
+			be64_to_cpu(flowstats[i].tx_pause_transition);
+	}
+
+	/* if pfc is not in use, all priorities counters have the same value */
+	priv->rx_flowstats.rx_pause =
+		be64_to_cpu(flowstats[0].rx_pause);
+	priv->rx_flowstats.rx_pause_duration =
+		be64_to_cpu(flowstats[0].rx_pause_duration);
+	priv->rx_flowstats.rx_pause_transition =
+		be64_to_cpu(flowstats[0].rx_pause_transition);
+	priv->tx_flowstats.tx_pause =
+		be64_to_cpu(flowstats[0].tx_pause);
+	priv->tx_flowstats.tx_pause_duration =
+		be64_to_cpu(flowstats[0].tx_pause_duration);
+	priv->tx_flowstats.tx_pause_transition =
+		be64_to_cpu(flowstats[0].tx_pause_transition);
+
+	spin_unlock_bh(&priv->stats_lock);
+
 out:
 	mlx4_free_cmd_mailbox(mdev->dev, mailbox);
 	return err;
diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index 4a471f5d1b56..209a6171e59b 100644
--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -145,7 +145,8 @@ static void dump_dev_cap_flags2(struct mlx4_dev *dev, u64 flags)
 		[20] = "Recoverable error events support",
 		[21] = "Port Remap support",
 		[22] = "QCN support",
-		[23] = "QP rate limiting support"
+		[23] = "QP rate limiting support",
+		[24] = "Ethernet Flow control statistics support"
 	};
 	int i;
 
@@ -672,6 +673,7 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
 #define QUERY_DEV_CAP_RSVD_XRC_OFFSET		0x66
 #define QUERY_DEV_CAP_MAX_XRC_OFFSET		0x67
 #define QUERY_DEV_CAP_MAX_COUNTERS_OFFSET	0x68
+#define QUERY_DEV_CAP_PORT_FLOWSTATS_COUNTERS_OFFSET	0x70
 #define QUERY_DEV_CAP_EXT_2_FLAGS_OFFSET	0x70
 #define QUERY_DEV_CAP_FLOW_STEERING_IPOIB_OFFSET	0x74
 #define QUERY_DEV_CAP_FLOW_STEERING_RANGE_EN_OFFSET	0x76
@@ -773,6 +775,9 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
 	MLX4_GET(field, outbox, QUERY_DEV_CAP_VL_PORT_OFFSET);
 	dev_cap->num_ports = field & 0xf;
 	MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_MSG_SZ_OFFSET);
+	MLX4_GET(field, outbox, QUERY_DEV_CAP_PORT_FLOWSTATS_COUNTERS_OFFSET);
+	if (field & 0x10)
+		dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN;
 	dev_cap->max_msg_sz = 1 << (field & 0x1f);
 	MLX4_GET(field, outbox, QUERY_DEV_CAP_FLOW_STEERING_RANGE_EN_OFFSET);
 	if (field & 0x80)
@@ -1088,6 +1093,7 @@ out:
 	return err;
 }
 
+#define DEV_CAP_EXT_2_FLAG_PFC_COUNTERS	(1 << 28)
 #define DEV_CAP_EXT_2_FLAG_VLAN_CONTROL (1 << 26)
 #define DEV_CAP_EXT_2_FLAG_80_VFS	(1 << 21)
 #define DEV_CAP_EXT_2_FLAG_FSM		(1 << 20)
@@ -1177,7 +1183,7 @@ int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave,
 	/* turn off host side virt features (VST, FSM, etc) for guests */
 	MLX4_GET(field32, outbox->buf, QUERY_DEV_CAP_EXT_2_FLAGS_OFFSET);
 	field32 &= ~(DEV_CAP_EXT_2_FLAG_VLAN_CONTROL | DEV_CAP_EXT_2_FLAG_80_VFS |
-		     DEV_CAP_EXT_2_FLAG_FSM);
+		     DEV_CAP_EXT_2_FLAG_FSM | DEV_CAP_EXT_2_FLAG_PFC_COUNTERS);
 	MLX4_PUT(outbox->buf, field32, QUERY_DEV_CAP_EXT_2_FLAGS_OFFSET);
 
 	/* turn off QCN for guests */
diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
index d5d971a408f2..67eeea244eff 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
+++ b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
@@ -565,6 +565,10 @@ struct mlx4_en_priv {
 #endif
 	struct mlx4_en_perf_stats pstats;
 	struct mlx4_en_pkt_stats pkstats;
+	struct mlx4_en_flow_stats_rx rx_priority_flowstats[MLX4_NUM_PRIORITIES];
+	struct mlx4_en_flow_stats_tx tx_priority_flowstats[MLX4_NUM_PRIORITIES];
+	struct mlx4_en_flow_stats_rx rx_flowstats;
+	struct mlx4_en_flow_stats_tx tx_flowstats;
 	struct mlx4_en_port_stats port_stats;
 	struct mlx4_en_stats_bitmap stats_bitmap;
 	struct list_head mc_list;
@@ -736,7 +740,9 @@ int mlx4_en_start_port(struct net_device *dev);
 void mlx4_en_stop_port(struct net_device *dev, int detach);
 
 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
-			      struct mlx4_en_stats_bitmap *stats_bitmap);
+			      struct mlx4_en_stats_bitmap *stats_bitmap,
+			      u8 rx_ppp, u8 rx_pause,
+			      u8 tx_ppp, u8 tx_pause);
 
 void mlx4_en_free_resources(struct mlx4_en_priv *priv);
 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv);
@@ -823,7 +829,10 @@ void mlx4_en_ptp_overflow_check(struct mlx4_en_dev *mdev);
 int mlx4_en_reset_config(struct net_device *dev,
 			 struct hwtstamp_config ts_config,
 			 netdev_features_t new_features);
-
+void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev,
+				     struct mlx4_en_stats_bitmap *stats_bitmap,
+				     u8 rx_ppp, u8 rx_pause,
+				     u8 tx_ppp, u8 tx_pause);
 int mlx4_en_netdev_event(struct notifier_block *this,
 			 unsigned long event, void *ptr);
 
diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4_stats.h b/drivers/net/ethernet/mellanox/mlx4/mlx4_stats.h
index d7183e30b40b..e193680fb527 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mlx4_stats.h
+++ b/drivers/net/ethernet/mellanox/mlx4/mlx4_stats.h
@@ -42,8 +42,58 @@ struct mlx4_en_perf_stats {
 };
 
 #define NUM_MAIN_STATS	21
+
+#define MLX4_NUM_PRIORITIES	8
+
+struct mlx4_en_flow_stats_rx {
+	u64 rx_pause;
+	u64 rx_pause_duration;
+	u64 rx_pause_transition;
+#define NUM_FLOW_STATS_RX	3
+#define NUM_FLOW_PRIORITY_STATS_RX	(NUM_FLOW_STATS_RX * \
+					 MLX4_NUM_PRIORITIES)
+};
+
+struct mlx4_en_flow_stats_tx {
+	u64 tx_pause;
+	u64 tx_pause_duration;
+	u64 tx_pause_transition;
+#define NUM_FLOW_STATS_TX	3
+#define NUM_FLOW_PRIORITY_STATS_TX	(NUM_FLOW_STATS_TX * \
+					 MLX4_NUM_PRIORITIES)
+};
+
+#define NUM_FLOW_STATS (NUM_FLOW_STATS_RX + NUM_FLOW_STATS_TX + \
+			NUM_FLOW_PRIORITY_STATS_TX + \
+			NUM_FLOW_PRIORITY_STATS_RX)
+
+struct mlx4_en_stat_out_flow_control_mbox {
+	/* Total number of PAUSE frames received from the far-end port */
+	__be64 rx_pause;
+	/* Total number of microseconds that far-end port requested to pause
+	* transmission of packets
+	*/
+	__be64 rx_pause_duration;
+	/* Number of received transmission from XOFF state to XON state */
+	__be64 rx_pause_transition;
+	/* Total number of PAUSE frames sent from the far-end port */
+	__be64 tx_pause;
+	/* Total time in microseconds that transmission of packets has been
+	* paused
+	*/
+	__be64 tx_pause_duration;
+	/* Number of transmitter transitions from XOFF state to XON state */
+	__be64 tx_pause_transition;
+	/* Reserverd */
+	__be64 reserved[2];
+};
+
+enum {
+	MLX4_DUMP_ETH_STATS_FLOW_CONTROL = 1 << 12
+};
+
 #define NUM_ALL_STATS	(NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PKT_STATS + \
-			 NUM_PERF_STATS)
+			 NUM_FLOW_STATS + NUM_PERF_STATS)
 
 #define MLX4_FIND_NETDEV_STAT(n) (offsetof(struct net_device_stats, n) / \
 				  sizeof(((struct net_device_stats *)0)->n))
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index 49abbe28e230..ab7ebec943b8 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -205,7 +205,8 @@ enum {
 	MLX4_DEV_CAP_FLAG2_RECOVERABLE_ERROR_EVENT = 1LL << 20,
 	MLX4_DEV_CAP_FLAG2_PORT_REMAP		= 1LL <<  21,
 	MLX4_DEV_CAP_FLAG2_QCN			= 1LL <<  22,
-	MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT	= 1LL <<  23
+	MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT	= 1LL <<  23,
+	MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN         = 1LL <<  24
 };
 
 enum {
-- 
cgit v1.2.3


From 802f42a8d99254b8602bf65cc50e8333bf479f13 Mon Sep 17 00:00:00 2001
From: Ido Shamay <idos@mellanox.com>
Date: Thu, 2 Apr 2015 16:31:06 +0300
Subject: net/mlx4: Add RSS support for fragmented IP datagrams

Enable RSS support for fragmented IP packets, when device supports it.
Until now, fragmented IP packets were directed only to the default_qpn.
Since IP fragments (datagram) have no upper protocols (L3 IP packets),
hash is performed on 3-tuple - dst MAC, source IP and dest IP. The HW
makes sure that this holds for the 1st fragment too, so all fragments
go to the same QP.

Signed-off-by: Ido Shamay <idos@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/mellanox/mlx4/fw.c   | 12 ++++++++++++
 drivers/net/ethernet/mellanox/mlx4/fw.h   |  1 +
 drivers/net/ethernet/mellanox/mlx4/main.c |  2 ++
 include/linux/mlx4/device.h               |  1 +
 4 files changed, 16 insertions(+)

(limited to 'drivers/net/ethernet/mellanox/mlx4/fw.c')

diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index 209a6171e59b..412e019e8b2e 100644
--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -105,6 +105,7 @@ static void dump_dev_cap_flags(struct mlx4_dev *dev, u64 flags)
 		[41] = "Unicast VEP steering support",
 		[42] = "Multicast VEP steering support",
 		[48] = "Counters support",
+		[52] = "RSS IP fragments support",
 		[53] = "Port ETS Scheduler support",
 		[55] = "Port link type sensing support",
 		[59] = "Port management change event support",
@@ -1138,6 +1139,9 @@ int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave,
 	}
 	for (; slave_port < dev->caps.num_ports; ++slave_port)
 		flags &= ~(MLX4_DEV_CAP_FLAG_WOL_PORT1 << slave_port);
+
+	/* Not exposing RSS IP fragments to guests */
+	flags &= ~MLX4_DEV_CAP_FLAG_RSS_IP_FRAG;
 	MLX4_PUT(outbox->buf, flags, QUERY_DEV_CAP_EXT_FLAGS_OFFSET);
 
 	MLX4_GET(field, outbox->buf, QUERY_DEV_CAP_VL_PORT_OFFSET);
@@ -1701,6 +1705,10 @@ int mlx4_INIT_HCA(struct mlx4_dev *dev, struct mlx4_init_hca_param *param)
 	if (dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS)
 		*(inbox + INIT_HCA_FLAGS_OFFSET / 4) |= cpu_to_be32(1 << 4);
 
+	/* Enable RSS spread to fragmented IP packets when supported */
+	if (dev->caps.flags & MLX4_DEV_CAP_FLAG_RSS_IP_FRAG)
+		*(inbox + INIT_HCA_FLAGS_OFFSET / 4) |= cpu_to_be32(1 << 13);
+
 	/* CX3 is capable of extending CQEs/EQEs from 32 to 64 bytes */
 	if (dev->caps.flags & MLX4_DEV_CAP_FLAG_64B_EQE) {
 		*(inbox + INIT_HCA_EQE_CQE_OFFSETS / 4) |= cpu_to_be32(1 << 29);
@@ -1889,6 +1897,10 @@ int mlx4_QUERY_HCA(struct mlx4_dev *dev,
 		else
 			param->steering_mode = MLX4_STEERING_MODE_A0;
 	}
+
+	if (dword_field & (1 << 13))
+		param->rss_ip_frags = 1;
+
 	/* steering attributes */
 	if (param->steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED) {
 		MLX4_GET(param->mc_base, outbox, INIT_HCA_FS_BASE_OFFSET);
diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.h b/drivers/net/ethernet/mellanox/mlx4/fw.h
index 863655bd3947..07cb7c2461ad 100644
--- a/drivers/net/ethernet/mellanox/mlx4/fw.h
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.h
@@ -203,6 +203,7 @@ struct mlx4_init_hca_param {
 	u64 dev_cap_enabled;
 	u16 cqe_size; /* For use only when CQE stride feature enabled */
 	u16 eqe_size; /* For use only when EQE stride feature enabled */
+	u8 rss_ip_frags;
 };
 
 struct mlx4_init_ib_param {
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index 43aa76775b5f..ee0a67069b57 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -885,6 +885,8 @@ static int mlx4_slave_cap(struct mlx4_dev *dev)
 	mlx4_warn(dev, "Timestamping is not supported in slave mode\n");
 
 	slave_adjust_steering_mode(dev, &dev_cap, &hca_param);
+	mlx4_dbg(dev, "RSS support for IP fragments is %s\n",
+		 hca_param.rss_ip_frags ? "on" : "off");
 
 	if (func_cap.extra_flags & MLX4_QUERY_FUNC_FLAGS_BF_RES_QP &&
 	    dev->caps.bf_reg_size)
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index ab7ebec943b8..41eaafdfb1cd 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -174,6 +174,7 @@ enum {
 	MLX4_DEV_CAP_FLAG_VEP_UC_STEER	= 1LL << 41,
 	MLX4_DEV_CAP_FLAG_VEP_MC_STEER	= 1LL << 42,
 	MLX4_DEV_CAP_FLAG_COUNTERS	= 1LL << 48,
+	MLX4_DEV_CAP_FLAG_RSS_IP_FRAG   = 1LL << 52,
 	MLX4_DEV_CAP_FLAG_SET_ETH_SCHED = 1LL << 53,
 	MLX4_DEV_CAP_FLAG_SENSE_SUPPORT	= 1LL << 55,
 	MLX4_DEV_CAP_FLAG_PORT_MNG_CHG_EV = 1LL << 59,
-- 
cgit v1.2.3


From d019fcb2244519d453694bfce868f3e717bfcebb Mon Sep 17 00:00:00 2001
From: Ido Shamay <idos@mellanox.com>
Date: Thu, 2 Apr 2015 16:31:13 +0300
Subject: net/mlx4: Query device for QoS per VF support

Checks in QUERY_DEV_CAP if the granular QoS per VF feature is
supported by the device. Disabled for guests.

Signed-off-by: Ido Shamay <idos@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/mellanox/mlx4/fw.c | 10 +++++++++-
 include/linux/mlx4/device.h             |  3 ++-
 2 files changed, 11 insertions(+), 2 deletions(-)

(limited to 'drivers/net/ethernet/mellanox/mlx4/fw.c')

diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index 412e019e8b2e..94e857e39063 100644
--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -147,7 +147,8 @@ static void dump_dev_cap_flags2(struct mlx4_dev *dev, u64 flags)
 		[21] = "Port Remap support",
 		[22] = "QCN support",
 		[23] = "QP rate limiting support",
-		[24] = "Ethernet Flow control statistics support"
+		[24] = "Ethernet Flow control statistics support",
+		[25] = "Granular QoS per VF support",
 	};
 	int i;
 
@@ -871,6 +872,8 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
 	MLX4_GET(size, outbox, QUERY_DEV_CAP_MAX_DESC_SZ_RQ_OFFSET);
 	dev_cap->max_rq_desc_sz = size;
 	MLX4_GET(field, outbox, QUERY_DEV_CAP_CQ_EQ_CACHE_LINE_STRIDE);
+	if (field & (1 << 4))
+		dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_QOS_VPP;
 	if (field & (1 << 5))
 		dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_ETH_PROT_CTRL;
 	if (field & (1 << 6))
@@ -1199,6 +1202,11 @@ int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave,
 	field16 = 0;
 	MLX4_PUT(outbox->buf, field16, QUERY_DEV_CAP_QP_RATE_LIMIT_NUM_OFFSET);
 
+	/* turn off QoS per VF support for guests */
+	MLX4_GET(field, outbox->buf, QUERY_DEV_CAP_CQ_EQ_CACHE_LINE_STRIDE);
+	field &= 0xef;
+	MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_CQ_EQ_CACHE_LINE_STRIDE);
+
 	return 0;
 }
 
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index b676d0c0111a..c37208f7869f 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -205,7 +205,8 @@ enum {
 	MLX4_DEV_CAP_FLAG2_PORT_REMAP		= 1LL <<  21,
 	MLX4_DEV_CAP_FLAG2_QCN			= 1LL <<  22,
 	MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT	= 1LL <<  23,
-	MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN         = 1LL <<  24
+	MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN         = 1LL <<  24,
+	MLX4_DEV_CAP_FLAG2_QOS_VPP		= 1LL <<  25,
 };
 
 enum {
-- 
cgit v1.2.3


From 3742cc65512cd4897a63dce94104f9a6e74997a0 Mon Sep 17 00:00:00 2001
From: Ido Shamay <idos@mellanox.com>
Date: Thu, 2 Apr 2015 16:31:17 +0300
Subject: net/mlx4: Warn users of depracated QoS Firmware

A new capability bit was introduced in the past to to differ devices
using the QoS ETS feature. The old was deprecated since then.
If driver sees device which set only the old capabilty, it will print
warning to user suggesting to upgrade the FW.

Signed-off-by: Ido Shamay <idos@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 2 +-
 drivers/net/ethernet/mellanox/mlx4/fw.c        | 7 +++++--
 drivers/net/ethernet/mellanox/mlx4/main.c      | 8 ++++++++
 include/linux/mlx4/device.h                    | 1 +
 4 files changed, 15 insertions(+), 3 deletions(-)

(limited to 'drivers/net/ethernet/mellanox/mlx4/fw.c')

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index 2a5df0aa2228..be9e07a72193 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -2814,7 +2814,7 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
 	priv->msg_enable = MLX4_EN_MSG_LEVEL;
 #ifdef CONFIG_MLX4_EN_DCB
 	if (!mlx4_is_slave(priv->mdev->dev)) {
-		if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) {
+		if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
 			dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
 		} else {
 			en_info(priv, "enabling only PFC DCB ops\n");
diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index 94e857e39063..16bbd6cdff6c 100644
--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -149,6 +149,7 @@ static void dump_dev_cap_flags2(struct mlx4_dev *dev, u64 flags)
 		[23] = "QP rate limiting support",
 		[24] = "Ethernet Flow control statistics support",
 		[25] = "Granular QoS per VF support",
+		[26] = "Port ETS Scheduler support",
 	};
 	int i;
 
@@ -900,6 +901,8 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
 	MLX4_GET(field, outbox, QUERY_DEV_CAP_VXLAN);
 	if (field & 1<<3)
 		dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_VXLAN_OFFLOADS;
+	if (field & (1 << 5))
+		dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_ETS_CFG;
 	MLX4_GET(dev_cap->max_icm_sz, outbox,
 		 QUERY_DEV_CAP_MAX_ICM_SZ_OFFSET);
 	if (dev_cap->flags & MLX4_DEV_CAP_FLAG_COUNTERS)
@@ -1157,9 +1160,9 @@ int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave,
 	field &= 0x7f;
 	MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_CQ_TS_SUPPORT_OFFSET);
 
-	/* For guests, disable vxlan tunneling */
+	/* For guests, disable vxlan tunneling and QoS support */
 	MLX4_GET(field, outbox->buf, QUERY_DEV_CAP_VXLAN);
-	field &= 0xf7;
+	field &= 0xd7;
 	MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_VXLAN);
 
 	/* For guests, report Blueflame disabled */
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index ee0a67069b57..3becad37aec8 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -528,6 +528,14 @@ static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
 		dev->caps.alloc_res_qp_mask =
 			(dev->caps.bf_reg_size ? MLX4_RESERVE_ETH_BF_QP : 0) |
 			MLX4_RESERVE_A0_QP;
+
+		if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) &&
+		    dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) {
+			mlx4_warn(dev, "Old device ETS support detected\n");
+			mlx4_warn(dev, "Consider upgrading device FW.\n");
+			dev->caps.flags2 |= MLX4_DEV_CAP_FLAG2_ETS_CFG;
+		}
+
 	} else {
 		dev->caps.alloc_res_qp_mask = 0;
 	}
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index c37208f7869f..15f46767342e 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -207,6 +207,7 @@ enum {
 	MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT	= 1LL <<  23,
 	MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN         = 1LL <<  24,
 	MLX4_DEV_CAP_FLAG2_QOS_VPP		= 1LL <<  25,
+	MLX4_DEV_CAP_FLAG2_ETS_CFG		= 1LL <<  26,
 };
 
 enum {
-- 
cgit v1.2.3


From 38438f7c7e8cdbb0e9f55aae0e43da67c460639f Mon Sep 17 00:00:00 2001
From: Ido Shamay <idos@mellanox.com>
Date: Thu, 2 Apr 2015 16:31:18 +0300
Subject: net/mlx4: Set enhanced QoS support by default when ETS supported

If HCA supports ETS QoS feature, set enhanced QoS bit in init_hca as default.

Signed-off-by: Ido Shamay <idos@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/mellanox/mlx4/fw.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'drivers/net/ethernet/mellanox/mlx4/fw.c')

diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index 16bbd6cdff6c..b93e23bef6c9 100644
--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -49,9 +49,9 @@ enum {
 extern void __buggy_use_of_MLX4_GET(void);
 extern void __buggy_use_of_MLX4_PUT(void);
 
-static bool enable_qos;
+static bool enable_qos = true;
 module_param(enable_qos, bool, 0444);
-MODULE_PARM_DESC(enable_qos, "Enable Quality of Service support in the HCA (default: off)");
+MODULE_PARM_DESC(enable_qos, "Enable Enhanced QoS support (default: on)");
 
 #define MLX4_GET(dest, source, offset)				      \
 	do {							      \
@@ -1709,7 +1709,7 @@ int mlx4_INIT_HCA(struct mlx4_dev *dev, struct mlx4_init_hca_param *param)
 		*(inbox + INIT_HCA_FLAGS_OFFSET / 4) |= cpu_to_be32(1 << 3);
 
 	/* Enable QoS support if module parameter set */
-	if (enable_qos)
+	if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG && enable_qos)
 		*(inbox + INIT_HCA_FLAGS_OFFSET / 4) |= cpu_to_be32(1 << 2);
 
 	/* enable counters */
-- 
cgit v1.2.3


From 51af33cfed248dc8f36fa82df06b85e10038a01e Mon Sep 17 00:00:00 2001
From: Ido Shamay <idos@mellanox.com>
Date: Thu, 2 Apr 2015 16:31:20 +0300
Subject: net/mlx4_en: Add interface identify support

Add support for the interface ethtool identify feature.

Make the physical port LED to blink with green and yellow colors.

The device handles the LED blink by itself (synchrous use of
set_phys_id), by returning 0 to ETHTOOL_ID_ACTIVE command.

Signed-off-by: Eyal Grossman <eyalgr@mellanox.com>
Signed-off-by: Ido Shamay <idos@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/mellanox/mlx4/en_ethtool.c | 27 +++++++++++++++++++++++++
 drivers/net/ethernet/mellanox/mlx4/fw.c         | 10 +++++++++
 drivers/net/ethernet/mellanox/mlx4/mlx4_en.h    |  1 +
 drivers/net/ethernet/mellanox/mlx4/port.c       | 26 ++++++++++++++++++++++++
 include/linux/mlx4/cmd.h                        |  1 +
 include/linux/mlx4/device.h                     |  2 ++
 6 files changed, 67 insertions(+)

(limited to 'drivers/net/ethernet/mellanox/mlx4/fw.c')

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
index eba969b08dd1..3f44e2bbb982 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
@@ -1939,6 +1939,32 @@ static int mlx4_en_get_module_eeprom(struct net_device *dev,
 	return 0;
 }
 
+static int mlx4_en_set_phys_id(struct net_device *dev,
+			       enum ethtool_phys_id_state state)
+{
+	int err;
+	u16 beacon_duration;
+	struct mlx4_en_priv *priv = netdev_priv(dev);
+	struct mlx4_en_dev *mdev = priv->mdev;
+
+	if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PORT_BEACON))
+		return -EOPNOTSUPP;
+
+	switch (state) {
+	case ETHTOOL_ID_ACTIVE:
+		beacon_duration = PORT_BEACON_MAX_LIMIT;
+		break;
+	case ETHTOOL_ID_INACTIVE:
+		beacon_duration = 0;
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	err = mlx4_SET_PORT_BEACON(mdev->dev, priv->port, beacon_duration);
+	return err;
+}
+
 const struct ethtool_ops mlx4_en_ethtool_ops = {
 	.get_drvinfo = mlx4_en_get_drvinfo,
 	.get_settings = mlx4_en_get_settings,
@@ -1948,6 +1974,7 @@ const struct ethtool_ops mlx4_en_ethtool_ops = {
 	.get_sset_count = mlx4_en_get_sset_count,
 	.get_ethtool_stats = mlx4_en_get_ethtool_stats,
 	.self_test = mlx4_en_self_test,
+	.set_phys_id = mlx4_en_set_phys_id,
 	.get_wol = mlx4_en_get_wol,
 	.set_wol = mlx4_en_set_wol,
 	.get_msglevel = mlx4_en_get_msglevel,
diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index b93e23bef6c9..6317844b291f 100644
--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -150,6 +150,7 @@ static void dump_dev_cap_flags2(struct mlx4_dev *dev, u64 flags)
 		[24] = "Ethernet Flow control statistics support",
 		[25] = "Granular QoS per VF support",
 		[26] = "Port ETS Scheduler support",
+		[27] = "Port beacon support",
 	};
 	int i;
 
@@ -647,6 +648,7 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
 #define QUERY_DEV_CAP_RSS_OFFSET		0x2e
 #define QUERY_DEV_CAP_MAX_RDMA_OFFSET		0x2f
 #define QUERY_DEV_CAP_RSZ_SRQ_OFFSET		0x33
+#define QUERY_DEV_CAP_PORT_BEACON_OFFSET	0x34
 #define QUERY_DEV_CAP_ACK_DELAY_OFFSET		0x35
 #define QUERY_DEV_CAP_MTU_WIDTH_OFFSET		0x36
 #define QUERY_DEV_CAP_VL_PORT_OFFSET		0x37
@@ -786,6 +788,9 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
 	if (field & 0x80)
 		dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_FS_EN;
 	dev_cap->fs_log_max_ucast_qp_range_size = field & 0x1f;
+	MLX4_GET(field, outbox, QUERY_DEV_CAP_PORT_BEACON_OFFSET);
+	if (field & 0x80)
+		dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_PORT_BEACON;
 	MLX4_GET(field, outbox, QUERY_DEV_CAP_FLOW_STEERING_IPOIB_OFFSET);
 	if (field & 0x80)
 		dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_DMFS_IPOIB;
@@ -1165,6 +1170,11 @@ int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave,
 	field &= 0xd7;
 	MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_VXLAN);
 
+	/* For guests, disable port BEACON */
+	MLX4_GET(field, outbox->buf, QUERY_DEV_CAP_PORT_BEACON_OFFSET);
+	field &= 0x7f;
+	MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_PORT_BEACON_OFFSET);
+
 	/* For guests, report Blueflame disabled */
 	MLX4_GET(field, outbox->buf, QUERY_DEV_CAP_BF_OFFSET);
 	field &= 0x7f;
diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
index 67eeea244eff..9de30216b146 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
+++ b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
@@ -482,6 +482,7 @@ enum {
 	MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP	= (1 << 5),
 };
 
+#define PORT_BEACON_MAX_LIMIT (65535)
 #define MLX4_EN_MAC_HASH_SIZE (1 << BITS_PER_BYTE)
 #define MLX4_EN_MAC_HASH_IDX 5
 
diff --git a/drivers/net/ethernet/mellanox/mlx4/port.c b/drivers/net/ethernet/mellanox/mlx4/port.c
index ca4488ed561c..e8d716dfd5cb 100644
--- a/drivers/net/ethernet/mellanox/mlx4/port.c
+++ b/drivers/net/ethernet/mellanox/mlx4/port.c
@@ -835,6 +835,12 @@ static int mlx4_common_set_port(struct mlx4_dev *dev, int slave, u32 in_mod,
 				MLX4_CMD_NATIVE);
 	}
 
+	/* Slaves are not allowed to SET_PORT beacon (LED) blink */
+	if (op_mod == MLX4_SET_PORT_BEACON_OPCODE) {
+		mlx4_warn(dev, "denying SET_PORT Beacon slave:%d\n", slave);
+		return -EPERM;
+	}
+
 	/* For IB, we only consider:
 	 * - The capability mask, which is set to the aggregate of all
 	 *   slave function capabilities
@@ -1064,6 +1070,26 @@ int mlx4_SET_PORT_VXLAN(struct mlx4_dev *dev, u8 port, u8 steering, int enable)
 }
 EXPORT_SYMBOL(mlx4_SET_PORT_VXLAN);
 
+int mlx4_SET_PORT_BEACON(struct mlx4_dev *dev, u8 port, u16 time)
+{
+	int err;
+	struct mlx4_cmd_mailbox *mailbox;
+
+	mailbox = mlx4_alloc_cmd_mailbox(dev);
+	if (IS_ERR(mailbox))
+		return PTR_ERR(mailbox);
+
+	*((__be32 *)mailbox->buf) = cpu_to_be32(time);
+
+	err = mlx4_cmd(dev, mailbox->dma, port, MLX4_SET_PORT_BEACON_OPCODE,
+		       MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B,
+		       MLX4_CMD_NATIVE);
+
+	mlx4_free_cmd_mailbox(dev, mailbox);
+	return err;
+}
+EXPORT_SYMBOL(mlx4_SET_PORT_BEACON);
+
 int mlx4_SET_MCAST_FLTR_wrapper(struct mlx4_dev *dev, int slave,
 				struct mlx4_vhcr *vhcr,
 				struct mlx4_cmd_mailbox *inbox,
diff --git a/include/linux/mlx4/cmd.h b/include/linux/mlx4/cmd.h
index 62c4d4def474..f62e7cf227c6 100644
--- a/include/linux/mlx4/cmd.h
+++ b/include/linux/mlx4/cmd.h
@@ -191,6 +191,7 @@ enum {
 	/* Set port opcode modifiers */
 	MLX4_SET_PORT_IB_OPCODE		= 0x0,
 	MLX4_SET_PORT_ETH_OPCODE	= 0x1,
+	MLX4_SET_PORT_BEACON_OPCODE	= 0x4,
 };
 
 enum {
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index 15f46767342e..b761be7c88c8 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -208,6 +208,7 @@ enum {
 	MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN         = 1LL <<  24,
 	MLX4_DEV_CAP_FLAG2_QOS_VPP		= 1LL <<  25,
 	MLX4_DEV_CAP_FLAG2_ETS_CFG		= 1LL <<  26,
+	MLX4_DEV_CAP_FLAG2_PORT_BEACON		= 1LL <<  27,
 };
 
 enum {
@@ -1311,6 +1312,7 @@ int mlx4_SET_PORT_general(struct mlx4_dev *dev, u8 port, int mtu,
 			  u8 pptx, u8 pfctx, u8 pprx, u8 pfcrx);
 int mlx4_SET_PORT_qpn_calc(struct mlx4_dev *dev, u8 port, u32 base_qpn,
 			   u8 promisc);
+int mlx4_SET_PORT_BEACON(struct mlx4_dev *dev, u8 port, u16 time);
 int mlx4_SET_PORT_VXLAN(struct mlx4_dev *dev, u8 port, u8 steering, int enable);
 int mlx4_find_cached_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *idx);
 int mlx4_find_cached_vlan(struct mlx4_dev *dev, u8 port, u16 vid, int *idx);
-- 
cgit v1.2.3


From 78500b8c03236a18d454c9cc8a24cccca506b200 Mon Sep 17 00:00:00 2001
From: Muhammad Mahajna <muhammadm@mellanox.com>
Date: Thu, 2 Apr 2015 16:31:22 +0300
Subject: net/mlx4_en: Add RX-ALL support

Enabled when the device supports KEEP FCS and IGNORE FCS.

When the flag is set, pass all received frames up the stack,
even ones with invalid FCS, controlled by ethtool.

Signed-off-by: Muhammad Mahajna <muhammadm@mellanox.com>
Signed-off-by: Ido Shamay <idos@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 14 +++++++++++
 drivers/net/ethernet/mellanox/mlx4/fw.c        |  8 ++++++
 drivers/net/ethernet/mellanox/mlx4/main.c      | 21 ++++++++++++++++
 drivers/net/ethernet/mellanox/mlx4/mlx4.h      |  6 +++--
 drivers/net/ethernet/mellanox/mlx4/port.c      | 34 ++++++++++++++++++++++++++
 include/linux/mlx4/device.h                    |  3 +++
 6 files changed, 84 insertions(+), 2 deletions(-)

(limited to 'drivers/net/ethernet/mellanox/mlx4/fw.c')

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index 333af3405a80..0f1afc085d58 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -2204,6 +2204,17 @@ static int mlx4_en_set_features(struct net_device *netdev,
 		reset = true;
 	}
 
+	if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) {
+		u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0;
+
+		en_info(priv, "Turn %s RX-ALL\n",
+			ignore_fcs_value ? "ON" : "OFF");
+		ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev,
+					      priv->port, ignore_fcs_value);
+		if (ret)
+			return ret;
+	}
+
 	if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
 		en_info(priv, "Turn %s RX vlan strip offload\n",
 			(features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF");
@@ -2914,6 +2925,9 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
 	if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
 		dev->hw_features |= NETIF_F_RXFCS;
 
+	if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)
+		dev->hw_features |= NETIF_F_RXALL;
+
 	if (mdev->dev->caps.steering_mode ==
 	    MLX4_STEERING_MODE_DEVICE_MANAGED &&
 	    mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index 6317844b291f..b9881fc1252f 100644
--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -151,6 +151,7 @@ static void dump_dev_cap_flags2(struct mlx4_dev *dev, u64 flags)
 		[25] = "Granular QoS per VF support",
 		[26] = "Port ETS Scheduler support",
 		[27] = "Port beacon support",
+		[28] = "RX-ALL support",
 	};
 	int i;
 
@@ -893,6 +894,8 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
 	MLX4_GET(field, outbox, QUERY_DEV_CAP_CONFIG_DEV_OFFSET);
 	if (field & 0x20)
 		dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_CONFIG_DEV;
+	if (field & (1 << 2))
+		dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_IGNORE_FCS;
 	MLX4_GET(dev_cap->reserved_lkey, outbox,
 		 QUERY_DEV_CAP_RSVD_LKEY_OFFSET);
 	MLX4_GET(field32, outbox, QUERY_DEV_CAP_ETH_BACKPL_OFFSET);
@@ -1220,6 +1223,11 @@ int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave,
 	field &= 0xef;
 	MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_CQ_EQ_CACHE_LINE_STRIDE);
 
+	/* turn off ignore FCS feature for guests */
+	MLX4_GET(field, outbox->buf, QUERY_DEV_CAP_CONFIG_DEV_OFFSET);
+	field &= 0xfb;
+	MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_CONFIG_DEV_OFFSET);
+
 	return 0;
 }
 
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index 3becad37aec8..acceb75e8c44 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -297,6 +297,25 @@ static int mlx4_dev_port(struct mlx4_dev *dev, int port,
 	return err;
 }
 
+static inline void mlx4_enable_ignore_fcs(struct mlx4_dev *dev)
+{
+	if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS))
+		return;
+
+	if (mlx4_is_mfunc(dev)) {
+		mlx4_dbg(dev, "SRIOV mode - Disabling Ignore FCS");
+		dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_IGNORE_FCS;
+		return;
+	}
+
+	if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)) {
+		mlx4_dbg(dev,
+			 "Keep FCS is not supported - Disabling Ignore FCS");
+		dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_IGNORE_FCS;
+		return;
+	}
+}
+
 #define MLX4_A0_STEERING_TABLE_SIZE	256
 static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
 {
@@ -540,6 +559,8 @@ static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
 		dev->caps.alloc_res_qp_mask = 0;
 	}
 
+	mlx4_enable_ignore_fcs(dev);
+
 	return 0;
 }
 
diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4.h b/drivers/net/ethernet/mellanox/mlx4/mlx4.h
index 32469c64d580..f30eeb730a86 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mlx4.h
+++ b/drivers/net/ethernet/mellanox/mlx4/mlx4.h
@@ -763,9 +763,11 @@ enum {
 
 
 struct mlx4_set_port_general_context {
-	u8 reserved[3];
+	u16 reserved1;
+	u8 v_ignore_fcs;
 	u8 flags;
-	u16 reserved2;
+	u8 ignore_fcs;
+	u8 reserved2;
 	__be16 mtu;
 	u8 pptx;
 	u8 pfctx;
diff --git a/drivers/net/ethernet/mellanox/mlx4/port.c b/drivers/net/ethernet/mellanox/mlx4/port.c
index e8d716dfd5cb..c2b21313dba7 100644
--- a/drivers/net/ethernet/mellanox/mlx4/port.c
+++ b/drivers/net/ethernet/mellanox/mlx4/port.c
@@ -45,6 +45,14 @@
 #define MLX4_VLAN_VALID		(1u << 31)
 #define MLX4_VLAN_MASK		0xfff
 
+#define MLX4_STATS_TRAFFIC_COUNTERS_MASK	0xfULL
+#define MLX4_STATS_TRAFFIC_DROPS_MASK		0xc0ULL
+#define MLX4_STATS_ERROR_COUNTERS_MASK		0x1ffc30ULL
+#define MLX4_STATS_PORT_COUNTERS_MASK		0x1fe00000ULL
+
+#define MLX4_FLAG_V_IGNORE_FCS_MASK		0x2
+#define MLX4_IGNORE_FCS_MASK			0x1
+
 void mlx4_init_mac_table(struct mlx4_dev *dev, struct mlx4_mac_table *table)
 {
 	int i;
@@ -1027,6 +1035,32 @@ int mlx4_SET_PORT_qpn_calc(struct mlx4_dev *dev, u8 port, u32 base_qpn,
 }
 EXPORT_SYMBOL(mlx4_SET_PORT_qpn_calc);
 
+int mlx4_SET_PORT_fcs_check(struct mlx4_dev *dev, u8 port, u8 ignore_fcs_value)
+{
+	struct mlx4_cmd_mailbox *mailbox;
+	struct mlx4_set_port_general_context *context;
+	u32 in_mod;
+	int err;
+
+	mailbox = mlx4_alloc_cmd_mailbox(dev);
+	if (IS_ERR(mailbox))
+		return PTR_ERR(mailbox);
+	context = mailbox->buf;
+	context->v_ignore_fcs |= MLX4_FLAG_V_IGNORE_FCS_MASK;
+	if (ignore_fcs_value)
+		context->ignore_fcs |= MLX4_IGNORE_FCS_MASK;
+	else
+		context->ignore_fcs &= ~MLX4_IGNORE_FCS_MASK;
+
+	in_mod = MLX4_SET_PORT_GENERAL << 8 | port;
+	err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
+		       MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
+
+	mlx4_free_cmd_mailbox(dev, mailbox);
+	return err;
+}
+EXPORT_SYMBOL(mlx4_SET_PORT_fcs_check);
+
 enum {
 	VXLAN_ENABLE_MODIFY	= 1 << 7,
 	VXLAN_STEERING_MODIFY	= 1 << 6,
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index b761be7c88c8..f9ce34bec45b 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -209,6 +209,7 @@ enum {
 	MLX4_DEV_CAP_FLAG2_QOS_VPP		= 1LL <<  25,
 	MLX4_DEV_CAP_FLAG2_ETS_CFG		= 1LL <<  26,
 	MLX4_DEV_CAP_FLAG2_PORT_BEACON		= 1LL <<  27,
+	MLX4_DEV_CAP_FLAG2_IGNORE_FCS		= 1LL <<  28,
 };
 
 enum {
@@ -1313,6 +1314,8 @@ int mlx4_SET_PORT_general(struct mlx4_dev *dev, u8 port, int mtu,
 int mlx4_SET_PORT_qpn_calc(struct mlx4_dev *dev, u8 port, u32 base_qpn,
 			   u8 promisc);
 int mlx4_SET_PORT_BEACON(struct mlx4_dev *dev, u8 port, u16 time);
+int mlx4_SET_PORT_fcs_check(struct mlx4_dev *dev, u8 port,
+			    u8 ignore_fcs_value);
 int mlx4_SET_PORT_VXLAN(struct mlx4_dev *dev, u8 port, u8 steering, int enable);
 int mlx4_find_cached_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *idx);
 int mlx4_find_cached_vlan(struct mlx4_dev *dev, u8 port, u16 vid, int *idx);
-- 
cgit v1.2.3