[PATCH net-next 0/8] bnxt_en: Updates for net-next.

[PATCH net-next 0/8] bnxt_en: Updates for net-next.

[Michael Chan]

Updates to support autoneg for all supported speeds, add PF port statistics,
and Advanced Error Reporting.

Michael Chan (8):
  bnxt_en: Refactor bnxt_fw_to_ethtool_advertised_spds().
  bnxt_en: Add reporting of link partner advertisement.
  bnxt_en: Use common function to get ethtool supported flags.
  bnxt_en: Extend autoneg to all speeds.
  bnxt_en: Add port statistics support.
  bnxt_en: Include some hardware port statistics in ndo_get_stats64().
  bnxt_en: Include hardware port statistics in ethtool -S.
  bnxt_en: Enable AER support.

 drivers/net/ethernet/broadcom/bnxt/bnxt.c         | 178 +++++++++++++++++++
 drivers/net/ethernet/broadcom/bnxt/bnxt.h         |  17 +-
 drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 201 +++++++++++++++++-----
 3 files changed, 344 insertions(+), 52 deletions(-)

-- 
1.8.3.1

[PATCH net-next 1/8] bnxt_en: Refactor bnxt_fw_to_ethtool_advertised_spds().

[Michael Chan]

Include the conversion of pause bits and add one extra call layer so
that the same refactored function can be reused to get the link partner
advertisement bits.

Signed-off-by: Michael Chan <mchan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 33 ++++++++++++++---------
 1 file changed, 20 insertions(+), 13 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index 84ea26d..a6ee26a 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -515,9 +515,8 @@ static u32 bnxt_fw_to_ethtool_support_spds(struct bnxt_link_info *link_info)
 	return speed_mask;
 }
 
-static u32 bnxt_fw_to_ethtool_advertised_spds(struct bnxt_link_info *link_info)
+static u32 _bnxt_fw_to_ethtool_adv_spds(u16 fw_speeds, u8 fw_pause)
 {
-	u16 fw_speeds = link_info->auto_link_speeds;
 	u32 speed_mask = 0;
 
 	/* TODO: support 25GB, 40GB, 50GB with different cable type */
@@ -532,9 +531,28 @@ static u32 bnxt_fw_to_ethtool_advertised_spds(struct bnxt_link_info *link_info)
 		speed_mask |= ADVERTISED_10000baseT_Full;
 	if (fw_speeds & BNXT_LINK_SPEED_MSK_40GB)
 		speed_mask |= ADVERTISED_40000baseCR4_Full;
+
+	if ((fw_pause & BNXT_LINK_PAUSE_BOTH) == BNXT_LINK_PAUSE_BOTH)
+		speed_mask |= ADVERTISED_Pause;
+	else if (fw_pause & BNXT_LINK_PAUSE_TX)
+		speed_mask |= ADVERTISED_Asym_Pause;
+	else if (fw_pause & BNXT_LINK_PAUSE_RX)
+		speed_mask |= ADVERTISED_Pause | ADVERTISED_Asym_Pause;
+
 	return speed_mask;
 }
 
+static u32 bnxt_fw_to_ethtool_advertised_spds(struct bnxt_link_info *link_info)
+{
+	u16 fw_speeds = link_info->auto_link_speeds;
+	u8 fw_pause = 0;
+
+	if (link_info->autoneg & BNXT_AUTONEG_FLOW_CTRL)
+		fw_pause = link_info->auto_pause_setting;
+
+	return _bnxt_fw_to_ethtool_adv_spds(fw_speeds, fw_pause);
+}
+
 u32 bnxt_fw_to_ethtool_speed(u16 fw_link_speed)
 {
 	switch (fw_link_speed) {
@@ -580,17 +598,6 @@ static int bnxt_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 		cmd->autoneg = AUTONEG_DISABLE;
 		cmd->advertising = 0;
 	}
-	if (link_info->autoneg & BNXT_AUTONEG_FLOW_CTRL) {
-		if ((link_info->auto_pause_setting & BNXT_LINK_PAUSE_BOTH) ==
-		    BNXT_LINK_PAUSE_BOTH) {
-			cmd->advertising |= ADVERTISED_Pause;
-		} else {
-			cmd->advertising |= ADVERTISED_Asym_Pause;
-			if (link_info->auto_pause_setting &
-			    BNXT_LINK_PAUSE_RX)
-				cmd->advertising |= ADVERTISED_Pause;
-		}
-	}
 
 	cmd->port = PORT_NONE;
 	if (link_info->media_type == PORT_PHY_QCFG_RESP_MEDIA_TYPE_TP) {
-- 
1.8.3.1

[PATCH net-next 2/8] bnxt_en: Add reporting of link partner advertisement.

[Michael Chan]

And report actual pause settings to ETHTOOL_GPAUSEPARAM to let ethtool
resolve the actual pause settings.

Signed-off-by: Michael Chan <mchan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c         |  3 +++
 drivers/net/ethernet/broadcom/bnxt/bnxt.h         |  2 ++
 drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 20 ++++++++++++++++++--
 3 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index aa6a318..072a12f 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -4467,6 +4467,7 @@ static int bnxt_update_link(struct bnxt *bp, bool chng_link_state)
 	link_info->pause = resp->pause;
 	link_info->auto_mode = resp->auto_mode;
 	link_info->auto_pause_setting = resp->auto_pause;
+	link_info->lp_pause = resp->link_partner_adv_pause;
 	link_info->force_pause_setting = resp->force_pause;
 	link_info->duplex_setting = resp->duplex;
 	if (link_info->phy_link_status == BNXT_LINK_LINK)
@@ -4477,6 +4478,8 @@ static int bnxt_update_link(struct bnxt *bp, bool chng_link_state)
 	link_info->auto_link_speed = le16_to_cpu(resp->auto_link_speed);
 	link_info->support_speeds = le16_to_cpu(resp->support_speeds);
 	link_info->auto_link_speeds = le16_to_cpu(resp->auto_link_speed_mask);
+	link_info->lp_auto_link_speeds =
+		le16_to_cpu(resp->link_partner_adv_speeds);
 	link_info->preemphasis = le32_to_cpu(resp->preemphasis);
 	link_info->phy_ver[0] = resp->phy_maj;
 	link_info->phy_ver[1] = resp->phy_min;
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index 9aa38f5..2f24e4e 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -780,6 +780,7 @@ struct bnxt_link_info {
 #define BNXT_LINK_PAUSE_RX	PORT_PHY_QCFG_RESP_PAUSE_RX
 #define BNXT_LINK_PAUSE_BOTH	(PORT_PHY_QCFG_RESP_PAUSE_RX | \
 				 PORT_PHY_QCFG_RESP_PAUSE_TX)
+	u8			lp_pause;
 	u8			auto_pause_setting;
 	u8			force_pause_setting;
 	u8			duplex_setting;
@@ -814,6 +815,7 @@ struct bnxt_link_info {
 #define BNXT_LINK_SPEED_MSK_25GB PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS_25GB
 #define BNXT_LINK_SPEED_MSK_40GB PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS_40GB
 #define BNXT_LINK_SPEED_MSK_50GB PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS_50GB
+	u16			lp_auto_link_speeds;
 	u16			auto_link_speed;
 	u16			force_link_speed;
 	u32			preemphasis;
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index a6ee26a..591c290 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -553,6 +553,17 @@ static u32 bnxt_fw_to_ethtool_advertised_spds(struct bnxt_link_info *link_info)
 	return _bnxt_fw_to_ethtool_adv_spds(fw_speeds, fw_pause);
 }
 
+static u32 bnxt_fw_to_ethtool_lp_adv(struct bnxt_link_info *link_info)
+{
+	u16 fw_speeds = link_info->lp_auto_link_speeds;
+	u8 fw_pause = 0;
+
+	if (link_info->autoneg & BNXT_AUTONEG_FLOW_CTRL)
+		fw_pause = link_info->lp_pause;
+
+	return _bnxt_fw_to_ethtool_adv_spds(fw_speeds, fw_pause);
+}
+
 u32 bnxt_fw_to_ethtool_speed(u16 fw_link_speed)
 {
 	switch (fw_link_speed) {
@@ -594,6 +605,9 @@ static int bnxt_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 			bnxt_fw_to_ethtool_advertised_spds(link_info);
 		cmd->advertising |= ADVERTISED_Autoneg;
 		cmd->autoneg = AUTONEG_ENABLE;
+		if (link_info->phy_link_status == BNXT_LINK_LINK)
+			cmd->lp_advertising =
+				bnxt_fw_to_ethtool_lp_adv(link_info);
 	} else {
 		cmd->autoneg = AUTONEG_DISABLE;
 		cmd->advertising = 0;
@@ -757,8 +771,10 @@ static void bnxt_get_pauseparam(struct net_device *dev,
 	if (BNXT_VF(bp))
 		return;
 	epause->autoneg = !!(link_info->autoneg & BNXT_AUTONEG_FLOW_CTRL);
-	epause->rx_pause = ((link_info->pause & BNXT_LINK_PAUSE_RX) != 0);
-	epause->tx_pause = ((link_info->pause & BNXT_LINK_PAUSE_TX) != 0);
+	epause->rx_pause =
+		((link_info->auto_pause_setting & BNXT_LINK_PAUSE_RX) != 0);
+	epause->tx_pause =
+		((link_info->auto_pause_setting & BNXT_LINK_PAUSE_TX) != 0);
 }
 
 static int bnxt_set_pauseparam(struct net_device *dev,
-- 
1.8.3.1

[PATCH net-next 3/8] bnxt_en: Use common function to get ethtool supported flags.

[Michael Chan]

The supported bits and advertising bits in ethtool have the same
definitions.  The same is true for the firmware bits.  So use the
common function to handle the conversion for both supported and
advertising bits.

Signed-off-by: Michael Chan <mchan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 29 +++++++----------------
 1 file changed, 9 insertions(+), 20 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index 591c290..e2fe967 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -496,25 +496,6 @@ static void bnxt_get_drvinfo(struct net_device *dev,
 	kfree(pkglog);
 }
 
-static u32 bnxt_fw_to_ethtool_support_spds(struct bnxt_link_info *link_info)
-{
-	u16 fw_speeds = link_info->support_speeds;
-	u32 speed_mask = 0;
-
-	if (fw_speeds & BNXT_LINK_SPEED_MSK_100MB)
-		speed_mask |= SUPPORTED_100baseT_Full;
-	if (fw_speeds & BNXT_LINK_SPEED_MSK_1GB)
-		speed_mask |= SUPPORTED_1000baseT_Full;
-	if (fw_speeds & BNXT_LINK_SPEED_MSK_2_5GB)
-		speed_mask |= SUPPORTED_2500baseX_Full;
-	if (fw_speeds & BNXT_LINK_SPEED_MSK_10GB)
-		speed_mask |= SUPPORTED_10000baseT_Full;
-	if (fw_speeds & BNXT_LINK_SPEED_MSK_40GB)
-		speed_mask |= SUPPORTED_40000baseCR4_Full;
-
-	return speed_mask;
-}
-
 static u32 _bnxt_fw_to_ethtool_adv_spds(u16 fw_speeds, u8 fw_pause)
 {
 	u32 speed_mask = 0;
@@ -564,6 +545,15 @@ static u32 bnxt_fw_to_ethtool_lp_adv(struct bnxt_link_info *link_info)
 	return _bnxt_fw_to_ethtool_adv_spds(fw_speeds, fw_pause);
 }
 
+static u32 bnxt_fw_to_ethtool_support_spds(struct bnxt_link_info *link_info)
+{
+	u16 fw_speeds = link_info->support_speeds;
+	u32 supported;
+
+	supported = _bnxt_fw_to_ethtool_adv_spds(fw_speeds, 0);
+	return (supported | SUPPORTED_Pause | SUPPORTED_Asym_Pause);
+}
+
 u32 bnxt_fw_to_ethtool_speed(u16 fw_link_speed)
 {
 	switch (fw_link_speed) {
@@ -595,7 +585,6 @@ static int bnxt_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 	u16 ethtool_speed;
 
 	cmd->supported = bnxt_fw_to_ethtool_support_spds(link_info);
-	cmd->supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause;
 
 	if (link_info->auto_link_speeds)
 		cmd->supported |= SUPPORTED_Autoneg;
-- 
1.8.3.1

Re: [PATCH net-next 3/8] bnxt_en: Use common function to get ethtool supported flags.

[Sergei Shtylyov]

Hello.

On 3/6/2016 10:01 AM, Michael Chan wrote:

> The supported bits and advertising bits in ethtool have the same
> definitions.  The same is true for the firmware bits.  So use the
> common function to handle the conversion for both supported and
> advertising bits.
>
> Signed-off-by: Michael Chan <mchan@broadcom.com>
> ---
>   drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 29 +++++++----------------
>   1 file changed, 9 insertions(+), 20 deletions(-)
>
> diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
> index 591c290..e2fe967 100644
> --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
> +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
[...]
> @@ -564,6 +545,15 @@ static u32 bnxt_fw_to_ethtool_lp_adv(struct bnxt_link_info *link_info)
>   	return _bnxt_fw_to_ethtool_adv_spds(fw_speeds, fw_pause);
>   }
>
> +static u32 bnxt_fw_to_ethtool_support_spds(struct bnxt_link_info *link_info)
> +{
> +	u16 fw_speeds = link_info->support_speeds;
> +	u32 supported;
> +
> +	supported = _bnxt_fw_to_ethtool_adv_spds(fw_speeds, 0);
> +	return (supported | SUPPORTED_Pause | SUPPORTED_Asym_Pause);

    Parens not needed here.

[...]

MBR, Sergei

[PATCH net-next 4/8] bnxt_en: Extend autoneg to all speeds.

[Michael Chan]

Allow all autoneg speeds aupported by firmware to be advertised.  If
the advertising parameter is 0, then all supported speeds will be
advertised.

Remove BNXT_ALL_COPPER_ETHTOOL_SPEED which is no longer used as all
supported speeds can be advertised.

Signed-off-by: Michael Chan <mchan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.h         |  4 ----
 drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 14 ++++----------
 2 files changed, 4 insertions(+), 14 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index 2f24e4e..c4424b6 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -757,10 +757,6 @@ struct bnxt_ntuple_filter {
 #define BNXT_FLTR_UPDATE	1
 };
 
-#define BNXT_ALL_COPPER_ETHTOOL_SPEED				\
-	(ADVERTISED_100baseT_Full | ADVERTISED_1000baseT_Full |	\
-	 ADVERTISED_10000baseT_Full)
-
 struct bnxt_link_info {
 	u8			media_type;
 	u8			transceiver;
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index e2fe967..87dcc62 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -696,16 +696,10 @@ static int bnxt_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 		return rc;
 
 	if (cmd->autoneg == AUTONEG_ENABLE) {
-		if (link_info->media_type != PORT_PHY_QCFG_RESP_MEDIA_TYPE_TP) {
-			netdev_err(dev, "Media type doesn't support autoneg\n");
-			rc = -EINVAL;
-			goto set_setting_exit;
-		}
-		if (cmd->advertising & ~(BNXT_ALL_COPPER_ETHTOOL_SPEED |
-					 ADVERTISED_Autoneg |
-					 ADVERTISED_TP |
-					 ADVERTISED_Pause |
-					 ADVERTISED_Asym_Pause)) {
+		u32 supported_spds = bnxt_fw_to_ethtool_support_spds(link_info);
+
+		if (cmd->advertising & ~(supported_spds | ADVERTISED_Autoneg |
+					 ADVERTISED_TP | ADVERTISED_FIBRE)) {
 			netdev_err(dev, "Unsupported advertising mask (adv: 0x%x)\n",
 				   cmd->advertising);
 			rc = -EINVAL;
-- 
1.8.3.1

[PATCH net-next 5/8] bnxt_en: Add port statistics support.

[Michael Chan]

Gather periodic port statistics if the device is PF and link is up.  This
is triggered in bnxt_timer() every one second to request firmware to DMA
the counters.

Signed-off-by: Michael Chan <michael.chan@broadocm.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 50 +++++++++++++++++++++++++++++++
 drivers/net/ethernet/broadcom/bnxt/bnxt.h | 11 ++++++-
 2 files changed, 60 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 072a12f..c5e812a 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -2361,6 +2361,14 @@ static void bnxt_free_stats(struct bnxt *bp)
 	u32 size, i;
 	struct pci_dev *pdev = bp->pdev;
 
+	if (bp->hw_rx_port_stats) {
+		dma_free_coherent(&pdev->dev, bp->hw_port_stats_size,
+				  bp->hw_rx_port_stats,
+				  bp->hw_rx_port_stats_map);
+		bp->hw_rx_port_stats = NULL;
+		bp->flags &= ~BNXT_FLAG_PORT_STATS;
+	}
+
 	if (!bp->bnapi)
 		return;
 
@@ -2397,6 +2405,24 @@ static int bnxt_alloc_stats(struct bnxt *bp)
 
 		cpr->hw_stats_ctx_id = INVALID_STATS_CTX_ID;
 	}
+
+	if (BNXT_PF(bp)) {
+		bp->hw_port_stats_size = sizeof(struct rx_port_stats) +
+					 sizeof(struct tx_port_stats) + 1024;
+
+		bp->hw_rx_port_stats =
+			dma_alloc_coherent(&pdev->dev, bp->hw_port_stats_size,
+					   &bp->hw_rx_port_stats_map,
+					   GFP_KERNEL);
+		if (!bp->hw_rx_port_stats)
+			return -ENOMEM;
+
+		bp->hw_tx_port_stats = (void *)(bp->hw_rx_port_stats + 1) +
+				       512;
+		bp->hw_tx_port_stats_map = bp->hw_rx_port_stats_map +
+					   sizeof(struct rx_port_stats) + 512;
+		bp->flags |= BNXT_FLAG_PORT_STATS;
+	}
 	return 0;
 }
 
@@ -3833,6 +3859,23 @@ hwrm_ver_get_exit:
 	return rc;
 }
 
+static int bnxt_hwrm_port_qstats(struct bnxt *bp)
+{
+	int rc;
+	struct bnxt_pf_info *pf = &bp->pf;
+	struct hwrm_port_qstats_input req = {0};
+
+	if (!(bp->flags & BNXT_FLAG_PORT_STATS))
+		return 0;
+
+	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_QSTATS, -1, -1);
+	req.port_id = cpu_to_le16(pf->port_id);
+	req.tx_stat_host_addr = cpu_to_le64(bp->hw_tx_port_stats_map);
+	req.rx_stat_host_addr = cpu_to_le64(bp->hw_rx_port_stats_map);
+	rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+	return rc;
+}
+
 static void bnxt_hwrm_free_tunnel_ports(struct bnxt *bp)
 {
 	if (bp->vxlan_port_cnt) {
@@ -5231,6 +5274,10 @@ static void bnxt_timer(unsigned long data)
 	if (atomic_read(&bp->intr_sem) != 0)
 		goto bnxt_restart_timer;
 
+	if (bp->link_info.link_up && (bp->flags & BNXT_FLAG_PORT_STATS)) {
+		set_bit(BNXT_PERIODIC_STATS_SP_EVENT, &bp->sp_event);
+		schedule_work(&bp->sp_task);
+	}
 bnxt_restart_timer:
 	mod_timer(&bp->timer, jiffies + bp->current_interval);
 }
@@ -5282,6 +5329,9 @@ static void bnxt_sp_task(struct work_struct *work)
 		rtnl_unlock();
 	}
 
+	if (test_and_clear_bit(BNXT_PERIODIC_STATS_SP_EVENT, &bp->sp_event))
+		bnxt_hwrm_port_qstats(bp);
+
 	smp_mb__before_atomic();
 	clear_bit(BNXT_STATE_IN_SP_TASK, &bp->state);
 }
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index c4424b6..ec04c47 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -873,6 +873,7 @@ struct bnxt {
 	#define BNXT_FLAG_MSIX_CAP	0x80
 	#define BNXT_FLAG_RFS		0x100
 	#define BNXT_FLAG_SHARED_RINGS	0x200
+	#define BNXT_FLAG_PORT_STATS	0x400
 
 	#define BNXT_FLAG_ALL_CONFIG_FEATS (BNXT_FLAG_TPA |		\
 					    BNXT_FLAG_RFS |		\
@@ -925,7 +926,7 @@ struct bnxt {
 	struct bnxt_queue_info	q_info[BNXT_MAX_QUEUE];
 
 	unsigned int		current_interval;
-#define BNXT_TIMER_INTERVAL	(HZ / 2)
+#define BNXT_TIMER_INTERVAL	HZ
 
 	struct timer_list	timer;
 
@@ -945,6 +946,13 @@ struct bnxt {
 	void			*hwrm_dbg_resp_addr;
 	dma_addr_t		hwrm_dbg_resp_dma_addr;
 #define HWRM_DBG_REG_BUF_SIZE	128
+
+	struct rx_port_stats	*hw_rx_port_stats;
+	struct tx_port_stats	*hw_tx_port_stats;
+	dma_addr_t		hw_rx_port_stats_map;
+	dma_addr_t		hw_tx_port_stats_map;
+	int			hw_port_stats_size;
+
 	int			hwrm_cmd_timeout;
 	struct mutex		hwrm_cmd_lock;	/* serialize hwrm messages */
 	struct hwrm_ver_get_output	ver_resp;
@@ -980,6 +988,7 @@ struct bnxt {
 #define BNXT_RESET_TASK_SP_EVENT	6
 #define BNXT_RST_RING_SP_EVENT		7
 #define BNXT_HWRM_PF_UNLOAD_SP_EVENT	8
+#define BNXT_PERIODIC_STATS_SP_EVENT	9
 
 	struct bnxt_pf_info	pf;
 #ifdef CONFIG_BNXT_SRIOV
-- 
1.8.3.1

[PATCH net-next 6/8] bnxt_en: Include some hardware port statistics in ndo_get_stats64().

[Michael Chan]

Include some of the port error counters (e.g. crc) in ->ndo_get_stats64()
for the PF device.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index c5e812a..18a14a5 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -4934,6 +4934,22 @@ bnxt_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
 		stats->tx_dropped += le64_to_cpu(hw_stats->tx_drop_pkts);
 	}
 
+	if (bp->flags & BNXT_FLAG_PORT_STATS) {
+		struct rx_port_stats *rx = bp->hw_rx_port_stats;
+		struct tx_port_stats *tx = bp->hw_tx_port_stats;
+
+		stats->rx_crc_errors = le64_to_cpu(rx->rx_fcs_err_frames);
+		stats->rx_frame_errors = le64_to_cpu(rx->rx_align_err_frames);
+		stats->rx_length_errors = le64_to_cpu(rx->rx_undrsz_frames) +
+					  le64_to_cpu(rx->rx_ovrsz_frames) +
+					  le64_to_cpu(rx->rx_runt_frames);
+		stats->rx_errors = le64_to_cpu(rx->rx_false_carrier_frames) +
+				   le64_to_cpu(rx->rx_jbr_frames);
+		stats->collisions = le64_to_cpu(tx->tx_total_collisions);
+		stats->tx_fifo_errors = le64_to_cpu(tx->tx_fifo_underruns);
+		stats->tx_errors = le64_to_cpu(tx->tx_err);
+	}
+
 	return stats;
 }
 
-- 
1.8.3.1

[PATCH net-next 7/8] bnxt_en: Include hardware port statistics in ethtool -S.

[Michael Chan]

Include the more useful port statistics in ethtool -S for the PF device.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 105 +++++++++++++++++++++-
 1 file changed, 103 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index 87dcc62..888f03f 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -8,6 +8,7 @@
  */
 
 #include <linux/ctype.h>
+#include <linux/stringify.h>
 #include <linux/ethtool.h>
 #include <linux/interrupt.h>
 #include <linux/pci.h>
@@ -83,13 +84,99 @@ static int bnxt_set_coalesce(struct net_device *dev,
 
 #define BNXT_NUM_STATS	21
 
+#define BNXT_RX_STATS_OFFSET(counter)	\
+	(offsetof(struct rx_port_stats, counter) / 8)
+
+#define BNXT_RX_STATS_ENTRY(counter)	\
+	{ BNXT_RX_STATS_OFFSET(counter), __stringify(counter) }
+
+#define BNXT_TX_STATS_OFFSET(counter)			\
+	((offsetof(struct tx_port_stats, counter) +	\
+	  sizeof(struct rx_port_stats) + 512) / 8)
+
+#define BNXT_TX_STATS_ENTRY(counter)	\
+	{ BNXT_TX_STATS_OFFSET(counter), __stringify(counter) }
+
+static const struct {
+	long offset;
+	char string[ETH_GSTRING_LEN];
+} bnxt_port_stats_arr[] = {
+	BNXT_RX_STATS_ENTRY(rx_64b_frames),
+	BNXT_RX_STATS_ENTRY(rx_65b_127b_frames),
+	BNXT_RX_STATS_ENTRY(rx_128b_255b_frames),
+	BNXT_RX_STATS_ENTRY(rx_256b_511b_frames),
+	BNXT_RX_STATS_ENTRY(rx_512b_1023b_frames),
+	BNXT_RX_STATS_ENTRY(rx_1024b_1518_frames),
+	BNXT_RX_STATS_ENTRY(rx_good_vlan_frames),
+	BNXT_RX_STATS_ENTRY(rx_1519b_2047b_frames),
+	BNXT_RX_STATS_ENTRY(rx_2048b_4095b_frames),
+	BNXT_RX_STATS_ENTRY(rx_4096b_9216b_frames),
+	BNXT_RX_STATS_ENTRY(rx_9217b_16383b_frames),
+	BNXT_RX_STATS_ENTRY(rx_total_frames),
+	BNXT_RX_STATS_ENTRY(rx_ucast_frames),
+	BNXT_RX_STATS_ENTRY(rx_mcast_frames),
+	BNXT_RX_STATS_ENTRY(rx_bcast_frames),
+	BNXT_RX_STATS_ENTRY(rx_fcs_err_frames),
+	BNXT_RX_STATS_ENTRY(rx_ctrl_frames),
+	BNXT_RX_STATS_ENTRY(rx_pause_frames),
+	BNXT_RX_STATS_ENTRY(rx_pfc_frames),
+	BNXT_RX_STATS_ENTRY(rx_align_err_frames),
+	BNXT_RX_STATS_ENTRY(rx_ovrsz_frames),
+	BNXT_RX_STATS_ENTRY(rx_jbr_frames),
+	BNXT_RX_STATS_ENTRY(rx_mtu_err_frames),
+	BNXT_RX_STATS_ENTRY(rx_tagged_frames),
+	BNXT_RX_STATS_ENTRY(rx_double_tagged_frames),
+	BNXT_RX_STATS_ENTRY(rx_good_frames),
+	BNXT_RX_STATS_ENTRY(rx_undrsz_frames),
+	BNXT_RX_STATS_ENTRY(rx_eee_lpi_events),
+	BNXT_RX_STATS_ENTRY(rx_eee_lpi_duration),
+	BNXT_RX_STATS_ENTRY(rx_bytes),
+	BNXT_RX_STATS_ENTRY(rx_runt_bytes),
+	BNXT_RX_STATS_ENTRY(rx_runt_frames),
+
+	BNXT_TX_STATS_ENTRY(tx_64b_frames),
+	BNXT_TX_STATS_ENTRY(tx_65b_127b_frames),
+	BNXT_TX_STATS_ENTRY(tx_128b_255b_frames),
+	BNXT_TX_STATS_ENTRY(tx_256b_511b_frames),
+	BNXT_TX_STATS_ENTRY(tx_512b_1023b_frames),
+	BNXT_TX_STATS_ENTRY(tx_1024b_1518_frames),
+	BNXT_TX_STATS_ENTRY(tx_good_vlan_frames),
+	BNXT_TX_STATS_ENTRY(tx_1519b_2047_frames),
+	BNXT_TX_STATS_ENTRY(tx_2048b_4095b_frames),
+	BNXT_TX_STATS_ENTRY(tx_4096b_9216b_frames),
+	BNXT_TX_STATS_ENTRY(tx_9217b_16383b_frames),
+	BNXT_TX_STATS_ENTRY(tx_good_frames),
+	BNXT_TX_STATS_ENTRY(tx_total_frames),
+	BNXT_TX_STATS_ENTRY(tx_ucast_frames),
+	BNXT_TX_STATS_ENTRY(tx_mcast_frames),
+	BNXT_TX_STATS_ENTRY(tx_bcast_frames),
+	BNXT_TX_STATS_ENTRY(tx_pause_frames),
+	BNXT_TX_STATS_ENTRY(tx_pfc_frames),
+	BNXT_TX_STATS_ENTRY(tx_jabber_frames),
+	BNXT_TX_STATS_ENTRY(tx_fcs_err_frames),
+	BNXT_TX_STATS_ENTRY(tx_err),
+	BNXT_TX_STATS_ENTRY(tx_fifo_underruns),
+	BNXT_TX_STATS_ENTRY(tx_eee_lpi_events),
+	BNXT_TX_STATS_ENTRY(tx_eee_lpi_duration),
+	BNXT_TX_STATS_ENTRY(tx_total_collisions),
+	BNXT_TX_STATS_ENTRY(tx_bytes),
+};
+
+#define BNXT_NUM_PORT_STATS ARRAY_SIZE(bnxt_port_stats_arr)
+
 static int bnxt_get_sset_count(struct net_device *dev, int sset)
 {
 	struct bnxt *bp = netdev_priv(dev);
 
 	switch (sset) {
-	case ETH_SS_STATS:
-		return BNXT_NUM_STATS * bp->cp_nr_rings;
+	case ETH_SS_STATS: {
+		int num_stats = BNXT_NUM_STATS * bp->cp_nr_rings;
+
+		if (bp->flags & BNXT_FLAG_PORT_STATS)
+			num_stats += BNXT_NUM_PORT_STATS;
+
+		return num_stats;
+	}
 	default:
 		return -EOPNOTSUPP;
 	}
@@ -118,6 +205,14 @@ static void bnxt_get_ethtool_stats(struct net_device *dev,
 			buf[j] = le64_to_cpu(hw_stats[k]);
 		buf[j++] = cpr->rx_l4_csum_errors;
 	}
+	if (bp->flags & BNXT_FLAG_PORT_STATS) {
+		__le64 *port_stats = (__le64 *)bp->hw_rx_port_stats;
+
+		for (i = 0; i < BNXT_NUM_PORT_STATS; i++, j++) {
+			buf[j] = le64_to_cpu(*(port_stats +
+					       bnxt_port_stats_arr[i].offset));
+		}
+	}
 }
 
 static void bnxt_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
@@ -172,6 +267,12 @@ static void bnxt_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
 			sprintf(buf, "[%d]: rx_l4_csum_errors", i);
 			buf += ETH_GSTRING_LEN;
 		}
+		if (bp->flags & BNXT_FLAG_PORT_STATS) {
+			for (i = 0; i < BNXT_NUM_PORT_STATS; i++) {
+				strcpy(buf, bnxt_port_stats_arr[i].string);
+				buf += ETH_GSTRING_LEN;
+			}
+		}
 		break;
 	default:
 		netdev_err(bp->dev, "bnxt_get_strings invalid request %x\n",
-- 
1.8.3.1

[PATCH net-next 8/8] bnxt_en: Enable AER support.

[Michael Chan]

From: Satish Baddipadige <sbaddipa@broadcom.com>

Add pci_error_handler callbacks to support for pcie advanced error
recovery.

Signed-off-by: Satish Baddipadige <sbaddipa@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 109 ++++++++++++++++++++++++++++++
 1 file changed, 109 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 18a14a5..0cd55de 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -5411,6 +5411,8 @@ static int bnxt_init_board(struct pci_dev *pdev, struct net_device *dev)
 		goto init_err_release;
 	}
 
+	pci_enable_pcie_error_reporting(pdev);
+
 	INIT_WORK(&bp->sp_task, bnxt_sp_task);
 
 	spin_lock_init(&bp->ntp_fltr_lock);
@@ -5790,6 +5792,7 @@ static void bnxt_remove_one(struct pci_dev *pdev)
 	if (BNXT_PF(bp))
 		bnxt_sriov_disable(bp);
 
+	pci_disable_pcie_error_reporting(pdev);
 	unregister_netdev(dev);
 	cancel_work_sync(&bp->sp_task);
 	bp->sp_event = 0;
@@ -6029,11 +6032,117 @@ init_err_free:
 	return rc;
 }
 
+/**
+ * bnxt_io_error_detected - called when PCI error is detected
+ * @pdev: Pointer to PCI device
+ * @state: The current pci connection state
+ *
+ * This function is called after a PCI bus error affecting
+ * this device has been detected.
+ */
+static pci_ers_result_t bnxt_io_error_detected(struct pci_dev *pdev,
+					       pci_channel_state_t state)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+
+	netdev_info(netdev, "PCI I/O error detected\n");
+
+	rtnl_lock();
+	netif_device_detach(netdev);
+
+	if (state == pci_channel_io_perm_failure) {
+		rtnl_unlock();
+		return PCI_ERS_RESULT_DISCONNECT;
+	}
+
+	if (netif_running(netdev))
+		bnxt_close(netdev);
+
+	pci_disable_device(pdev);
+	rtnl_unlock();
+
+	/* Request a slot slot reset. */
+	return PCI_ERS_RESULT_NEED_RESET;
+}
+
+/**
+ * bnxt_io_slot_reset - called after the pci bus has been reset.
+ * @pdev: Pointer to PCI device
+ *
+ * Restart the card from scratch, as if from a cold-boot.
+ * At this point, the card has exprienced a hard reset,
+ * followed by fixups by BIOS, and has its config space
+ * set up identically to what it was at cold boot.
+ */
+static pci_ers_result_t bnxt_io_slot_reset(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct bnxt *bp = netdev_priv(netdev);
+	int err = 0;
+	pci_ers_result_t result = PCI_ERS_RESULT_DISCONNECT;
+
+	netdev_info(bp->dev, "PCI Slot Reset\n");
+
+	rtnl_lock();
+
+	if (pci_enable_device(pdev)) {
+		dev_err(&pdev->dev,
+			"Cannot re-enable PCI device after reset.\n");
+	} else {
+		pci_set_master(pdev);
+
+		if (netif_running(netdev))
+			err = bnxt_open(netdev);
+
+		if (!err)
+			result = PCI_ERS_RESULT_RECOVERED;
+	}
+
+	if (result != PCI_ERS_RESULT_RECOVERED && netif_running(netdev))
+		dev_close(netdev);
+
+	rtnl_unlock();
+
+	err = pci_cleanup_aer_uncorrect_error_status(pdev);
+	if (err) {
+		dev_err(&pdev->dev,
+			"pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
+			 err); /* non-fatal, continue */
+	}
+
+	return PCI_ERS_RESULT_RECOVERED;
+}
+
+/**
+ * bnxt_io_resume - called when traffic can start flowing again.
+ * @pdev: Pointer to PCI device
+ *
+ * This callback is called when the error recovery driver tells
+ * us that its OK to resume normal operation.
+ */
+static void bnxt_io_resume(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+
+	rtnl_lock();
+
+	netif_device_attach(netdev);
+
+	rtnl_unlock();
+}
+
+static const struct pci_error_handlers bnxt_err_handler = {
+	.error_detected	= bnxt_io_error_detected,
+	.slot_reset	= bnxt_io_slot_reset,
+	.resume		= bnxt_io_resume
+};
+
 static struct pci_driver bnxt_pci_driver = {
 	.name		= DRV_MODULE_NAME,
 	.id_table	= bnxt_pci_tbl,
 	.probe		= bnxt_init_one,
 	.remove		= bnxt_remove_one,
+	.err_handler	= &bnxt_err_handler,
 #if defined(CONFIG_BNXT_SRIOV)
 	.sriov_configure = bnxt_sriov_configure,
 #endif
-- 
1.8.3.1