[PATCH V4 net-next 00/18] net: hns: Misc. HNS Bug Fixes & Code Improvements

[PATCH V4 net-next 00/18] net: hns: Misc. HNS Bug Fixes & Code Improvements

[Salil Mehta]

This patch set introduces various HNS bug fixes, optimizations and code
improvements.

Daode Huang (1):
  net: hns: bug fix of ethtool show the speed

Kejian Yan (7):
  net: hns: Remove the redundant adding and deleting mac function
  net: hns: Remove redundant mac_get_id()
  net: hns: Remove redundant mac table operations
  net: hns: Clean redundant code from hns_mdio.c file
  net: hns: Optimise the code in hns_mdio_wait_ready()
  net: hns: Simplify the exception sequence in hns_ppe_init()
  net: hns: Adjust the SBM module buffer threshold

Salil Mehta (1):
  net: hns: Some checkpatch.pl script & warning fixes

lipeng (9):
  net: hns: Fix the implementation of irq affinity function
  net: hns: Modify GMAC init TX threshold value
  net: hns: Optimize the code for GMAC pad and crc Config
  net: hns: Remove redundant memset during buffer release
  net: hns: Optimize hns_nic_common_poll for better performance
  net: hns: Fix to adjust buf_size of ring according to mtu
  net: hns: Replace netif_tx_lock to ring spin lock
  net: hns: Correct HNS RSS key set function
  net: hns: Avoid Hip06 chip TX packet line bug

 drivers/net/ethernet/hisilicon/hns/hnae.c          |   7 +-
 drivers/net/ethernet/hisilicon/hns/hnae.h          |  47 ++-
 drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c  | 127 +++++--
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c |  61 ++--
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c  |  41 +--
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h  |   5 +-
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c | 249 +------------
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h |  14 +-
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c  |  17 +-
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c  | 143 ++++++--
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h  |  26 +-
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h  |   6 +-
 .../net/ethernet/hisilicon/hns/hns_dsaf_xgmac.c    |  13 -
 drivers/net/ethernet/hisilicon/hns/hns_enet.c      | 400 ++++++++++++++++-----
 drivers/net/ethernet/hisilicon/hns/hns_enet.h      |   3 +-
 drivers/net/ethernet/hisilicon/hns/hns_ethtool.c   |  34 +-
 drivers/net/ethernet/hisilicon/hns_mdio.c          |  20 +-
 17 files changed, 653 insertions(+), 560 deletions(-)

-- 
2.7.4

[PATCH V4 net-next 01/18] net: hns: Fix the implementation of irq affinity function

[Salil Mehta]

From: lipeng <lipeng321@huawei.com>

This patch fixes the implementation of the IRQ affinity
function. This function is used to create the cpu mask
which eventually is used to initialize the cpu<->queue
association for XPS(Transmit Packet Steering).

Signed-off-by: lipeng <lipeng321@huawei.com>
Signed-off-by: Kejian Yan <yankejian@huawei.com>
Reviewed-by: Yisen Zhuang <yisen.zhuang@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns/hns_enet.c | 75 +++++++++++----------------
 drivers/net/ethernet/hisilicon/hns/hns_enet.h |  1 +
 2 files changed, 30 insertions(+), 46 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.c b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
index fca37e2..73ec8c8 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
@@ -1196,54 +1196,31 @@ static void hns_nic_ring_close(struct net_device *netdev, int idx)
 	napi_disable(&priv->ring_data[idx].napi);
 }
 
-static void hns_set_irq_affinity(struct hns_nic_priv *priv)
+static int hns_nic_init_affinity_mask(int q_num, int ring_idx,
+				      struct hnae_ring *ring, cpumask_t *mask)
 {
-	struct hnae_handle *h = priv->ae_handle;
-	struct hns_nic_ring_data *rd;
-	int i;
 	int cpu;
-	cpumask_var_t mask;
 
-	if (!alloc_cpumask_var(&mask, GFP_KERNEL))
-		return;
-
-	/*diffrent irq banlance for 16core and 32core*/
-	if (h->q_num == num_possible_cpus()) {
-		for (i = 0; i < h->q_num * 2; i++) {
-			rd = &priv->ring_data[i];
-			if (cpu_online(rd->queue_index)) {
-				cpumask_clear(mask);
-				cpu = rd->queue_index;
-				cpumask_set_cpu(cpu, mask);
-				(void)irq_set_affinity_hint(rd->ring->irq,
-							    mask);
-			}
-		}
+	/* Diffrent irq banlance between 16core and 32core.
+	 * The cpu mask set by ring index according to the ring flag
+	 * which indicate the ring is tx or rx.
+	 */
+	if (q_num == num_possible_cpus()) {
+		if (is_tx_ring(ring))
+			cpu = ring_idx;
+		else
+			cpu = ring_idx - q_num;
 	} else {
-		for (i = 0; i < h->q_num; i++) {
-			rd = &priv->ring_data[i];
-			if (cpu_online(rd->queue_index * 2)) {
-				cpumask_clear(mask);
-				cpu = rd->queue_index * 2;
-				cpumask_set_cpu(cpu, mask);
-				(void)irq_set_affinity_hint(rd->ring->irq,
-							    mask);
-			}
-		}
-
-		for (i = h->q_num; i < h->q_num * 2; i++) {
-			rd = &priv->ring_data[i];
-			if (cpu_online(rd->queue_index * 2 + 1)) {
-				cpumask_clear(mask);
-				cpu = rd->queue_index * 2 + 1;
-				cpumask_set_cpu(cpu, mask);
-				(void)irq_set_affinity_hint(rd->ring->irq,
-							    mask);
-			}
-		}
+		if (is_tx_ring(ring))
+			cpu = ring_idx * 2;
+		else
+			cpu = (ring_idx - q_num) * 2 + 1;
 	}
 
-	free_cpumask_var(mask);
+	cpumask_clear(mask);
+	cpumask_set_cpu(cpu, mask);
+
+	return cpu;
 }
 
 static int hns_nic_init_irq(struct hns_nic_priv *priv)
@@ -1252,6 +1229,7 @@ static int hns_nic_init_irq(struct hns_nic_priv *priv)
 	struct hns_nic_ring_data *rd;
 	int i;
 	int ret;
+	int cpu;
 
 	for (i = 0; i < h->q_num * 2; i++) {
 		rd = &priv->ring_data[i];
@@ -1261,7 +1239,7 @@ static int hns_nic_init_irq(struct hns_nic_priv *priv)
 
 		snprintf(rd->ring->ring_name, RCB_RING_NAME_LEN,
 			 "%s-%s%d", priv->netdev->name,
-			 (i < h->q_num ? "tx" : "rx"), rd->queue_index);
+			 (is_tx_ring(rd->ring) ? "tx" : "rx"), rd->queue_index);
 
 		rd->ring->ring_name[RCB_RING_NAME_LEN - 1] = '\0';
 
@@ -1273,12 +1251,17 @@ static int hns_nic_init_irq(struct hns_nic_priv *priv)
 			return ret;
 		}
 		disable_irq(rd->ring->irq);
+
+		cpu = hns_nic_init_affinity_mask(h->q_num, i,
+						 rd->ring, &rd->mask);
+
+		if (cpu_online(cpu))
+			irq_set_affinity_hint(rd->ring->irq,
+					      &rd->mask);
+
 		rd->ring->irq_init_flag = RCB_IRQ_INITED;
 	}
 
-	/*set cpu affinity*/
-	hns_set_irq_affinity(priv);
-
 	return 0;
 }
 
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.h b/drivers/net/ethernet/hisilicon/hns/hns_enet.h
index 5b412de..fff8f8a 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_enet.h
+++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.h
@@ -37,6 +37,7 @@ enum hns_nic_state {
 struct hns_nic_ring_data {
 	struct hnae_ring *ring;
 	struct napi_struct napi;
+	cpumask_t mask; /* affinity mask */
 	int queue_index;
 	int (*poll_one)(struct hns_nic_ring_data *, int, void *);
 	void (*ex_process)(struct hns_nic_ring_data *, struct sk_buff *);
-- 
2.7.4

[PATCH V4 net-next 02/18] net: hns: Modify GMAC init TX threshold value

[Salil Mehta]

From: lipeng <lipeng321@huawei.com>

This patch reduces GMAC TX threshold value to avoid gmac
hang-up with speed 100M/duplex half.

Signed-off-by: lipeng <lipeng321@huawei.com>
Signed-off-by: JinchuanTian <tianjinchuan1@huawei.com>
Reviewed-by: Yisen Zhuang <yisen.zhuang@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c | 6 ++++++
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h  | 4 ++++
 2 files changed, 10 insertions(+)

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c
index 3382441..a8dbe00 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c
@@ -325,6 +325,12 @@ static void hns_gmac_init(void *mac_drv)
 	hns_gmac_tx_loop_pkt_dis(mac_drv);
 	if (drv->mac_cb->mac_type == HNAE_PORT_DEBUG)
 		hns_gmac_set_uc_match(mac_drv, 0);
+
+	/* reduce gmac tx water line to avoid gmac hang-up
+	 * in speed 100M and duplex half.
+	 */
+	dsaf_set_dev_field(drv, GMAC_TX_WATER_LINE_REG, GMAC_TX_WATER_LINE_MASK,
+			   GMAC_TX_WATER_LINE_SHIFT, 8);
 }
 
 void hns_gmac_update_stats(void *mac_drv)
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h
index 8fa18fc..4b8af68 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h
@@ -466,6 +466,7 @@
 
 #define GMAC_DUPLEX_TYPE_REG			0x0008UL
 #define GMAC_FD_FC_TYPE_REG			0x000CUL
+#define GMAC_TX_WATER_LINE_REG			0x0010UL
 #define GMAC_FC_TX_TIMER_REG			0x001CUL
 #define GMAC_FD_FC_ADDR_LOW_REG			0x0020UL
 #define GMAC_FD_FC_ADDR_HIGH_REG		0x0024UL
@@ -912,6 +913,9 @@
 
 #define GMAC_DUPLEX_TYPE_B 0
 
+#define GMAC_TX_WATER_LINE_MASK		((1UL << 8) - 1)
+#define GMAC_TX_WATER_LINE_SHIFT	0
+
 #define GMAC_FC_TX_TIMER_S 0
 #define GMAC_FC_TX_TIMER_M 0xffff
 
-- 
2.7.4

[PATCH V4 net-next 03/18] net: hns: Optimize the code for GMAC pad and crc Config

[Salil Mehta]

From: lipeng <lipeng321@huawei.com>

This patch optimises the init configuration code leg
for gmac pad and crc set interface.

Signed-off-by: lipeng <lipeng321@huawei.com>
Signed-off-by: JinchuanTian <tianjinchuan1@huawei.com>
Reviewed-by: Yisen Zhuang <yisen.zhuang@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c | 36 ++++++++++------------
 1 file changed, 16 insertions(+), 20 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c
index a8dbe00..723f3ae 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c
@@ -148,6 +148,17 @@ static void hns_gmac_config_max_frame_length(void *mac_drv, u16 newval)
 			   GMAC_MAX_FRM_SIZE_S, newval);
 }
 
+static void hns_gmac_config_pad_and_crc(void *mac_drv, u8 newval)
+{
+	u32 tx_ctrl;
+	struct mac_driver *drv = (struct mac_driver *)mac_drv;
+
+	tx_ctrl = dsaf_read_dev(drv, GMAC_TRANSMIT_CONTROL_REG);
+	dsaf_set_bit(tx_ctrl, GMAC_TX_PAD_EN_B, !!newval);
+	dsaf_set_bit(tx_ctrl, GMAC_TX_CRC_ADD_B, !!newval);
+	dsaf_write_dev(drv, GMAC_TRANSMIT_CONTROL_REG, tx_ctrl);
+}
+
 static void hns_gmac_config_an_mode(void *mac_drv, u8 newval)
 {
 	struct mac_driver *drv = (struct mac_driver *)mac_drv;
@@ -250,7 +261,6 @@ static void hns_gmac_get_pausefrm_cfg(void *mac_drv, u32 *rx_pause_en,
 static int hns_gmac_adjust_link(void *mac_drv, enum mac_speed speed,
 				u32 full_duplex)
 {
-	u32 tx_ctrl;
 	struct mac_driver *drv = (struct mac_driver *)mac_drv;
 
 	dsaf_set_dev_bit(drv, GMAC_DUPLEX_TYPE_REG,
@@ -279,14 +289,6 @@ static int hns_gmac_adjust_link(void *mac_drv, enum mac_speed speed,
 		return -EINVAL;
 	}
 
-	tx_ctrl = dsaf_read_dev(drv, GMAC_TRANSMIT_CONTROL_REG);
-	dsaf_set_bit(tx_ctrl, GMAC_TX_PAD_EN_B, 1);
-	dsaf_set_bit(tx_ctrl, GMAC_TX_CRC_ADD_B, 1);
-	dsaf_write_dev(drv, GMAC_TRANSMIT_CONTROL_REG, tx_ctrl);
-
-	dsaf_set_dev_bit(drv, GMAC_MODE_CHANGE_EN_REG,
-			 GMAC_MODE_CHANGE_EB_B, 1);
-
 	return 0;
 }
 
@@ -326,6 +328,11 @@ static void hns_gmac_init(void *mac_drv)
 	if (drv->mac_cb->mac_type == HNAE_PORT_DEBUG)
 		hns_gmac_set_uc_match(mac_drv, 0);
 
+	hns_gmac_config_pad_and_crc(mac_drv, 1);
+
+	dsaf_set_dev_bit(drv, GMAC_MODE_CHANGE_EN_REG,
+			 GMAC_MODE_CHANGE_EB_B, 1);
+
 	/* reduce gmac tx water line to avoid gmac hang-up
 	 * in speed 100M and duplex half.
 	 */
@@ -459,17 +466,6 @@ static int hns_gmac_config_loopback(void *mac_drv, enum hnae_loop loop_mode,
 	return 0;
 }
 
-static void hns_gmac_config_pad_and_crc(void *mac_drv, u8 newval)
-{
-	u32 tx_ctrl;
-	struct mac_driver *drv = (struct mac_driver *)mac_drv;
-
-	tx_ctrl = dsaf_read_dev(drv, GMAC_TRANSMIT_CONTROL_REG);
-	dsaf_set_bit(tx_ctrl, GMAC_TX_PAD_EN_B, !!newval);
-	dsaf_set_bit(tx_ctrl, GMAC_TX_CRC_ADD_B, !!newval);
-	dsaf_write_dev(drv, GMAC_TRANSMIT_CONTROL_REG, tx_ctrl);
-}
-
 static void hns_gmac_get_id(void *mac_drv, u8 *mac_id)
 {
 	struct mac_driver *drv = (struct mac_driver *)mac_drv;
-- 
2.7.4

[PATCH V4 net-next 04/18] net: hns: Remove redundant memset during buffer release

[Salil Mehta]

From: lipeng <lipeng321@huawei.com>

Because all members of desc_cb is assigned when xmit one package, so it
can delete in hnae_free_buffer, as follows:
        - "dma, priv, length, type" are assigned in fill_v2_desc.
        - "page_offset, reuse_flag, buf" are not used in tx direction.

Signed-off-by: lipeng <lipeng321@huawei.com>
Signed-off-by: Weiwei Deng <dengweiwei@huawei.com>
Reviewed-by: Yisen Zhuang <yisen.zhuang@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns/hnae.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hnae.c b/drivers/net/ethernet/hisilicon/hns/hnae.c
index b6ed818..78af663 100644
--- a/drivers/net/ethernet/hisilicon/hns/hnae.c
+++ b/drivers/net/ethernet/hisilicon/hns/hnae.c
@@ -61,7 +61,6 @@ static void hnae_free_buffer(struct hnae_ring *ring, struct hnae_desc_cb *cb)
 		dev_kfree_skb_any((struct sk_buff *)cb->priv);
 	else if (unlikely(is_rx_ring(ring)))
 		put_page((struct page *)cb->priv);
-	memset(cb, 0, sizeof(*cb));
 }
 
 static int hnae_map_buffer(struct hnae_ring *ring, struct hnae_desc_cb *cb)
-- 
2.7.4

[PATCH V4 net-next 05/18] net: hns: bug fix of ethtool show the speed

[Salil Mehta]

From: Daode Huang <huangdaode@hisilicon.com>

When run ethtool ethX on hns driver, the speed will show
as "Unknown". The base.speed is not correct assigned,
this patch fix this bug.

Signed-off-by: Daode Huang <huangdaode@hisilicon.com>
Reviewed-by: Yisen Zhuang <yisen.zhuang@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns/hns_ethtool.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
index 3ac2183..3404eac 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
@@ -146,7 +146,7 @@ static int hns_nic_get_link_ksettings(struct net_device *net_dev,
 
 	/* When there is no phy, autoneg is off. */
 	cmd->base.autoneg = false;
-	cmd->base.cmd = speed;
+	cmd->base.speed = speed;
 	cmd->base.duplex = duplex;
 
 	if (net_dev->phydev)
-- 
2.7.4

[PATCH V4 net-next 06/18] net: hns: Optimize hns_nic_common_poll for better performance

[Salil Mehta]

From: lipeng <lipeng321@huawei.com>

After polling less than buget packages, we need check again. If
there are still some packages, we call napi_schedule add softirq
queue, this is not better way. So we return buget value instead
of napi_schedule.

Signed-off-by: lipeng <lipeng321@huawei.com>
reviewed-by: Yisen Zhuang <yisen.zhuang@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns/hns_enet.c | 50 ++++++++++++++++-----------
 drivers/net/ethernet/hisilicon/hns/hns_enet.h |  2 +-
 2 files changed, 31 insertions(+), 21 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.c b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
index 73ec8c8..5f67db2 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
@@ -859,7 +859,7 @@ static int hns_nic_rx_poll_one(struct hns_nic_ring_data *ring_data,
 	return recv_pkts;
 }
 
-static void hns_nic_rx_fini_pro(struct hns_nic_ring_data *ring_data)
+static bool hns_nic_rx_fini_pro(struct hns_nic_ring_data *ring_data)
 {
 	struct hnae_ring *ring = ring_data->ring;
 	int num = 0;
@@ -873,22 +873,23 @@ static void hns_nic_rx_fini_pro(struct hns_nic_ring_data *ring_data)
 		ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
 			ring_data->ring, 1);
 
-		napi_schedule(&ring_data->napi);
+		return false;
+	} else {
+		return true;
 	}
 }
 
-static void hns_nic_rx_fini_pro_v2(struct hns_nic_ring_data *ring_data)
+static bool hns_nic_rx_fini_pro_v2(struct hns_nic_ring_data *ring_data)
 {
 	struct hnae_ring *ring = ring_data->ring;
-	int num = 0;
+	int num;
 
 	num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
 
-	if (num == 0)
-		ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
-			ring, 0);
+	if (!num)
+		return true;
 	else
-		napi_schedule(&ring_data->napi);
+		return false;
 }
 
 static inline void hns_nic_reclaim_one_desc(struct hnae_ring *ring,
@@ -989,7 +990,7 @@ static int hns_nic_tx_poll_one(struct hns_nic_ring_data *ring_data,
 	return 0;
 }
 
-static void hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data)
+static bool hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data)
 {
 	struct hnae_ring *ring = ring_data->ring;
 	int head;
@@ -1002,20 +1003,21 @@ static void hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data)
 		ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
 			ring_data->ring, 1);
 
-		napi_schedule(&ring_data->napi);
+		return false;
+	} else {
+		return true;
 	}
 }
 
-static void hns_nic_tx_fini_pro_v2(struct hns_nic_ring_data *ring_data)
+static bool hns_nic_tx_fini_pro_v2(struct hns_nic_ring_data *ring_data)
 {
 	struct hnae_ring *ring = ring_data->ring;
 	int head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
 
 	if (head == ring->next_to_clean)
-		ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
-			ring, 0);
+		return true;
 	else
-		napi_schedule(&ring_data->napi);
+		return false;
 }
 
 static void hns_nic_tx_clr_all_bufs(struct hns_nic_ring_data *ring_data)
@@ -1042,15 +1044,23 @@ static void hns_nic_tx_clr_all_bufs(struct hns_nic_ring_data *ring_data)
 
 static int hns_nic_common_poll(struct napi_struct *napi, int budget)
 {
+	int clean_complete = 0;
 	struct hns_nic_ring_data *ring_data =
 		container_of(napi, struct hns_nic_ring_data, napi);
-	int clean_complete = ring_data->poll_one(
-				ring_data, budget, ring_data->ex_process);
+	struct hnae_ring *ring = ring_data->ring;
 
-	if (clean_complete >= 0 && clean_complete < budget) {
-		napi_complete(napi);
-		ring_data->fini_process(ring_data);
-		return 0;
+try_again:
+	clean_complete += ring_data->poll_one(
+				ring_data, budget - clean_complete,
+				ring_data->ex_process);
+
+	if (clean_complete < budget) {
+		if (ring_data->fini_process(ring_data)) {
+			napi_complete(napi);
+			ring->q->handle->dev->ops->toggle_ring_irq(ring, 0);
+		} else {
+			goto try_again;
+		}
 	}
 
 	return clean_complete;
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.h b/drivers/net/ethernet/hisilicon/hns/hns_enet.h
index fff8f8a..1b83232 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_enet.h
+++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.h
@@ -41,7 +41,7 @@ struct hns_nic_ring_data {
 	int queue_index;
 	int (*poll_one)(struct hns_nic_ring_data *, int, void *);
 	void (*ex_process)(struct hns_nic_ring_data *, struct sk_buff *);
-	void (*fini_process)(struct hns_nic_ring_data *);
+	bool (*fini_process)(struct hns_nic_ring_data *);
 };
 
 /* compatible the difference between two versions */
-- 
2.7.4

[PATCH V4 net-next 07/18] net: hns: Fix to adjust buf_size of ring according to mtu

[Salil Mehta]

From: lipeng <lipeng321@huawei.com>

Because buf_size of ring set to 2048, the process of rx_poll_one
can reuse the page, therefore the performance of XGE can improve.
But the chip only supports three bds in one package, so the max mtu
is 6K when it sets to 2048. For better performane in litter mtu, we
need change buf_size according to mtu.

When user change mtu, hns is only change the desc in memory. There
are some desc has been fetched by the chip, these desc can not be
changed by the code. So it needs set the port loopback and send
some packages to let the chip consumes the wrong desc and fetch new
desc.
Because the Pv660 do not support rss indirection, we need add version
check in mtu change process.

Signed-off-by: lipeng <lipeng321@huawei.com>
reviewed-by: Yisen Zhuang <yisen.zhuang@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
---
Change Log:
PATCH V4: Addressed kbuild test warning
	  * link -> https://lkml.org/lkml/2017/3/31/758
---
 drivers/net/ethernet/hisilicon/hns/hnae.h         |  37 ++++
 drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c |  26 ++-
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c |   3 +-
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h |   2 +-
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c |  41 +++-
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h |   3 +
 drivers/net/ethernet/hisilicon/hns/hns_enet.c     | 249 +++++++++++++++++++++-
 7 files changed, 337 insertions(+), 24 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hnae.h b/drivers/net/ethernet/hisilicon/hns/hnae.h
index 8016854..c66581d 100644
--- a/drivers/net/ethernet/hisilicon/hns/hnae.h
+++ b/drivers/net/ethernet/hisilicon/hns/hnae.h
@@ -67,6 +67,8 @@ do { \
 #define AE_IS_VER1(ver) ((ver) == AE_VERSION_1)
 #define AE_NAME_SIZE 16
 
+#define BD_SIZE_2048_MAX_MTU   6000
+
 /* some said the RX and TX RCB format should not be the same in the future. But
  * it is the same now...
  */
@@ -646,6 +648,41 @@ static inline void hnae_reuse_buffer(struct hnae_ring *ring, int i)
 	ring->desc[i].rx.ipoff_bnum_pid_flag = 0;
 }
 
+/* when reinit buffer size, we should reinit buffer description */
+static inline void hnae_reinit_all_ring_desc(struct hnae_handle *h)
+{
+	int i, j;
+	struct hnae_ring *ring;
+
+	for (i = 0; i < h->q_num; i++) {
+		ring = &h->qs[i]->rx_ring;
+		for (j = 0; j < ring->desc_num; j++)
+			ring->desc[j].addr = cpu_to_le64(ring->desc_cb[j].dma);
+	}
+
+	wmb();	/* commit all data before submit */
+}
+
+/* when reinit buffer size, we should reinit page offset */
+static inline void hnae_reinit_all_ring_page_off(struct hnae_handle *h)
+{
+	int i, j;
+	struct hnae_ring *ring;
+
+	for (i = 0; i < h->q_num; i++) {
+		ring = &h->qs[i]->rx_ring;
+		for (j = 0; j < ring->desc_num; j++) {
+			ring->desc_cb[j].page_offset = 0;
+			if (ring->desc[j].addr !=
+			    cpu_to_le64(ring->desc_cb[j].dma))
+				ring->desc[j].addr =
+					cpu_to_le64(ring->desc_cb[j].dma);
+		}
+	}
+
+	wmb();	/* commit all data before submit */
+}
+
 #define hnae_set_field(origin, mask, shift, val) \
 	do { \
 		(origin) &= (~(mask)); \
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c b/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c
index 0a9cdf0..cd7e88e 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c
@@ -267,8 +267,32 @@ static int hns_ae_clr_multicast(struct hnae_handle *handle)
 static int hns_ae_set_mtu(struct hnae_handle *handle, int new_mtu)
 {
 	struct hns_mac_cb *mac_cb = hns_get_mac_cb(handle);
+	struct hnae_queue *q;
+	u32 rx_buf_size;
+	int i, ret;
+
+	/* when buf_size is 2048, max mtu is 6K for rx ring max bd num is 3. */
+	if (!AE_IS_VER1(mac_cb->dsaf_dev->dsaf_ver)) {
+		if (new_mtu <= BD_SIZE_2048_MAX_MTU)
+			rx_buf_size = 2048;
+		else
+			rx_buf_size = 4096;
+	} else {
+		rx_buf_size = mac_cb->dsaf_dev->buf_size;
+	}
+
+	ret = hns_mac_set_mtu(mac_cb, new_mtu, rx_buf_size);
 
-	return hns_mac_set_mtu(mac_cb, new_mtu);
+	if (!ret) {
+		/* reinit ring buf_size */
+		for (i = 0; i < handle->q_num; i++) {
+			q = handle->qs[i];
+			q->rx_ring.buf_size = rx_buf_size;
+			hns_rcb_set_rx_ring_bs(q, rx_buf_size);
+		}
+	}
+
+	return ret;
 }
 
 static void hns_ae_set_tso_stats(struct hnae_handle *handle, int enable)
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c
index 3239d27..edf9a23 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c
@@ -491,10 +491,9 @@ void hns_mac_reset(struct hns_mac_cb *mac_cb)
 	}
 }
 
-int hns_mac_set_mtu(struct hns_mac_cb *mac_cb, u32 new_mtu)
+int hns_mac_set_mtu(struct hns_mac_cb *mac_cb, u32 new_mtu, u32 buf_size)
 {
 	struct mac_driver *drv = hns_mac_get_drv(mac_cb);
-	u32 buf_size = mac_cb->dsaf_dev->buf_size;
 	u32 new_frm = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
 	u32 max_frm = AE_IS_VER1(mac_cb->dsaf_dev->dsaf_ver) ?
 			MAC_MAX_MTU : MAC_MAX_MTU_V2;
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h
index 2bb3d1e..7f14d91 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h
@@ -444,7 +444,7 @@ void hns_mac_get_autoneg(struct hns_mac_cb *mac_cb, u32 *auto_neg);
 void hns_mac_get_pauseparam(struct hns_mac_cb *mac_cb, u32 *rx_en, u32 *tx_en);
 int hns_mac_set_autoneg(struct hns_mac_cb *mac_cb, u8 enable);
 int hns_mac_set_pauseparam(struct hns_mac_cb *mac_cb, u32 rx_en, u32 tx_en);
-int hns_mac_set_mtu(struct hns_mac_cb *mac_cb, u32 new_mtu);
+int hns_mac_set_mtu(struct hns_mac_cb *mac_cb, u32 new_mtu, u32 buf_size);
 int hns_mac_get_port_info(struct hns_mac_cb *mac_cb,
 			  u8 *auto_neg, u16 *speed, u8 *duplex);
 int hns_mac_config_mac_loopback(struct hns_mac_cb *mac_cb,
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c
index f0ed80d6..a6ab168 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c
@@ -32,6 +32,9 @@
 #define RCB_RESET_WAIT_TIMES 30
 #define RCB_RESET_TRY_TIMES 10
 
+/* Because default mtu is 1500, rcb buffer size is set to 2048 enough */
+#define RCB_DEFAULT_BUFFER_SIZE 2048
+
 /**
  *hns_rcb_wait_fbd_clean - clean fbd
  *@qs: ring struct pointer array
@@ -192,6 +195,30 @@ void hns_rcb_common_init_commit_hw(struct rcb_common_cb *rcb_common)
 	wmb();	/* Sync point after breakpoint */
 }
 
+/* hns_rcb_set_tx_ring_bs - init rcb ring buf size regester
+ *@q: hnae_queue
+ *@buf_size: buffer size set to hw
+ */
+void hns_rcb_set_tx_ring_bs(struct hnae_queue *q, u32 buf_size)
+{
+	u32 bd_size_type = hns_rcb_buf_size2type(buf_size);
+
+	dsaf_write_dev(q, RCB_RING_TX_RING_BD_LEN_REG,
+		       bd_size_type);
+}
+
+/* hns_rcb_set_rx_ring_bs - init rcb ring buf size regester
+ *@q: hnae_queue
+ *@buf_size: buffer size set to hw
+ */
+void hns_rcb_set_rx_ring_bs(struct hnae_queue *q, u32 buf_size)
+{
+	u32 bd_size_type = hns_rcb_buf_size2type(buf_size);
+
+	dsaf_write_dev(q, RCB_RING_RX_RING_BD_LEN_REG,
+		       bd_size_type);
+}
+
 /**
  *hns_rcb_ring_init - init rcb ring
  *@ring_pair: ring pair control block
@@ -200,8 +227,6 @@ void hns_rcb_common_init_commit_hw(struct rcb_common_cb *rcb_common)
 static void hns_rcb_ring_init(struct ring_pair_cb *ring_pair, int ring_type)
 {
 	struct hnae_queue *q = &ring_pair->q;
-	struct rcb_common_cb *rcb_common = ring_pair->rcb_common;
-	u32 bd_size_type = rcb_common->dsaf_dev->buf_size_type;
 	struct hnae_ring *ring =
 		(ring_type == RX_RING) ? &q->rx_ring : &q->tx_ring;
 	dma_addr_t dma = ring->desc_dma_addr;
@@ -212,8 +237,8 @@ static void hns_rcb_ring_init(struct ring_pair_cb *ring_pair, int ring_type)
 		dsaf_write_dev(q, RCB_RING_RX_RING_BASEADDR_H_REG,
 			       (u32)((dma >> 31) >> 1));
 
-		dsaf_write_dev(q, RCB_RING_RX_RING_BD_LEN_REG,
-			       bd_size_type);
+		hns_rcb_set_rx_ring_bs(q, ring->buf_size);
+
 		dsaf_write_dev(q, RCB_RING_RX_RING_BD_NUM_REG,
 			       ring_pair->port_id_in_comm);
 		dsaf_write_dev(q, RCB_RING_RX_RING_PKTLINE_REG,
@@ -224,8 +249,8 @@ static void hns_rcb_ring_init(struct ring_pair_cb *ring_pair, int ring_type)
 		dsaf_write_dev(q, RCB_RING_TX_RING_BASEADDR_H_REG,
 			       (u32)((dma >> 31) >> 1));
 
-		dsaf_write_dev(q, RCB_RING_TX_RING_BD_LEN_REG,
-			       bd_size_type);
+		hns_rcb_set_tx_ring_bs(q, ring->buf_size);
+
 		dsaf_write_dev(q, RCB_RING_TX_RING_BD_NUM_REG,
 			       ring_pair->port_id_in_comm);
 		dsaf_write_dev(q, RCB_RING_TX_RING_PKTLINE_REG,
@@ -380,7 +405,6 @@ static void hns_rcb_ring_get_cfg(struct hnae_queue *q, int ring_type)
 	struct hnae_ring *ring;
 	struct rcb_common_cb *rcb_common;
 	struct ring_pair_cb *ring_pair_cb;
-	u32 buf_size;
 	u16 desc_num, mdnum_ppkt;
 	bool irq_idx, is_ver1;
 
@@ -401,7 +425,6 @@ static void hns_rcb_ring_get_cfg(struct hnae_queue *q, int ring_type)
 	}
 
 	rcb_common = ring_pair_cb->rcb_common;
-	buf_size = rcb_common->dsaf_dev->buf_size;
 	desc_num = rcb_common->dsaf_dev->desc_num;
 
 	ring->desc = NULL;
@@ -410,7 +433,7 @@ static void hns_rcb_ring_get_cfg(struct hnae_queue *q, int ring_type)
 	ring->irq = ring_pair_cb->virq[irq_idx];
 	ring->desc_dma_addr = 0;
 
-	ring->buf_size = buf_size;
+	ring->buf_size = RCB_DEFAULT_BUFFER_SIZE;
 	ring->desc_num = desc_num;
 	ring->max_desc_num_per_pkt = mdnum_ppkt;
 	ring->max_raw_data_sz_per_desc = HNS_RCB_MAX_PKT_SIZE;
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h
index 99b4e1b..afe563c 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h
@@ -146,4 +146,7 @@ int hns_rcb_get_ring_regs_count(void);
 void hns_rcb_get_ring_regs(struct hnae_queue *queue, void *data);
 
 void hns_rcb_get_strings(int stringset, u8 *data, int index);
+void hns_rcb_set_rx_ring_bs(struct hnae_queue *q, u32 buf_size);
+void hns_rcb_set_tx_ring_bs(struct hnae_queue *q, u32 buf_size);
+
 #endif /* _HNS_DSAF_RCB_H */
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.c b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
index 5f67db2..57b4d59 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
@@ -1480,32 +1480,259 @@ static netdev_tx_t hns_nic_net_xmit(struct sk_buff *skb,
 	return (netdev_tx_t)ret;
 }
 
+static void hns_nic_drop_rx_fetch(struct hns_nic_ring_data *ring_data,
+				  struct sk_buff *skb)
+{
+	dev_kfree_skb_any(skb);
+}
+
+#define HNS_LB_TX_RING	0
+static struct sk_buff *hns_assemble_skb(struct net_device *ndev)
+{
+	struct sk_buff *skb;
+	struct ethhdr *ethhdr;
+	int frame_len;
+
+	/* allocate test skb */
+	skb = alloc_skb(64, GFP_KERNEL);
+	if (!skb)
+		return NULL;
+
+	skb_put(skb, 64);
+	skb->dev = ndev;
+	memset(skb->data, 0xFF, skb->len);
+
+	/* must be tcp/ip package */
+	ethhdr = (struct ethhdr *)skb->data;
+	ethhdr->h_proto = htons(ETH_P_IP);
+
+	frame_len = skb->len & (~1ul);
+	memset(&skb->data[frame_len / 2], 0xAA,
+	       frame_len / 2 - 1);
+
+	skb->queue_mapping = HNS_LB_TX_RING;
+
+	return skb;
+}
+
+static int hns_enable_serdes_lb(struct net_device *ndev)
+{
+	struct hns_nic_priv *priv = netdev_priv(ndev);
+	struct hnae_handle *h = priv->ae_handle;
+	struct hnae_ae_ops *ops = h->dev->ops;
+	int speed, duplex;
+	int ret;
+
+	ret = ops->set_loopback(h, MAC_INTERNALLOOP_SERDES, 1);
+	if (ret)
+		return ret;
+
+	ret = ops->start ? ops->start(h) : 0;
+	if (ret)
+		return ret;
+
+	/* link adjust duplex*/
+	if (h->phy_if != PHY_INTERFACE_MODE_XGMII)
+		speed = 1000;
+	else
+		speed = 10000;
+	duplex = 1;
+
+	ops->adjust_link(h, speed, duplex);
+
+	/* wait h/w ready */
+	mdelay(300);
+
+	return 0;
+}
+
+static void hns_disable_serdes_lb(struct net_device *ndev)
+{
+	struct hns_nic_priv *priv = netdev_priv(ndev);
+	struct hnae_handle *h = priv->ae_handle;
+	struct hnae_ae_ops *ops = h->dev->ops;
+
+	ops->stop(h);
+	ops->set_loopback(h, MAC_INTERNALLOOP_SERDES, 0);
+}
+
+/**
+ *hns_nic_clear_all_rx_fetch - clear the chip fetched descriptions. The
+ *function as follows:
+ *    1. if one rx ring has found the page_offset is not equal 0 between head
+ *       and tail, it means that the chip fetched the wrong descs for the ring
+ *       which buffer size is 4096.
+ *    2. we set the chip serdes loopback and set rss indirection to the ring.
+ *    3. construct 64-bytes ip broadcast packages, wait the associated rx ring
+ *       recieving all packages and it will fetch new descriptions.
+ *    4. recover to the original state.
+ *
+ *@ndev: net device
+ */
+static int hns_nic_clear_all_rx_fetch(struct net_device *ndev)
+{
+	struct hns_nic_priv *priv = netdev_priv(ndev);
+	struct hnae_handle *h = priv->ae_handle;
+	struct hnae_ae_ops *ops = h->dev->ops;
+	struct hns_nic_ring_data *rd;
+	struct hnae_ring *ring;
+	struct sk_buff *skb;
+	u32 *org_indir;
+	u32 *cur_indir;
+	int indir_size;
+	int head, tail;
+	int fetch_num;
+	int i, j;
+	bool found;
+	int retry_times;
+	int ret = 0;
+
+	/* alloc indir memory */
+	indir_size = ops->get_rss_indir_size(h) * sizeof(*org_indir);
+	org_indir = kzalloc(indir_size, GFP_KERNEL);
+	if (!org_indir)
+		return -ENOMEM;
+
+	/* store the orginal indirection */
+	ops->get_rss(h, org_indir, NULL, NULL);
+
+	cur_indir = kzalloc(indir_size, GFP_KERNEL);
+	if (!cur_indir) {
+		ret = -ENOMEM;
+		goto cur_indir_alloc_err;
+	}
+
+	/* set loopback */
+	if (hns_enable_serdes_lb(ndev)) {
+		ret = -EINVAL;
+		goto enable_serdes_lb_err;
+	}
+
+	/* foreach every rx ring to clear fetch desc */
+	for (i = 0; i < h->q_num; i++) {
+		ring = &h->qs[i]->rx_ring;
+		head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
+		tail = readl_relaxed(ring->io_base + RCB_REG_TAIL);
+		found = false;
+		fetch_num = ring_dist(ring, head, tail);
+
+		while (head != tail) {
+			if (ring->desc_cb[head].page_offset != 0) {
+				found = true;
+				break;
+			}
+
+			head++;
+			if (head == ring->desc_num)
+				head = 0;
+		}
+
+		if (found) {
+			for (j = 0; j < indir_size / sizeof(*org_indir); j++)
+				cur_indir[j] = i;
+			ops->set_rss(h, cur_indir, NULL, 0);
+
+			for (j = 0; j < fetch_num; j++) {
+				/* alloc one skb and init */
+				skb = hns_assemble_skb(ndev);
+				if (!skb)
+					goto out;
+				rd = &tx_ring_data(priv, skb->queue_mapping);
+				hns_nic_net_xmit_hw(ndev, skb, rd);
+
+				retry_times = 0;
+				while (retry_times++ < 10) {
+					mdelay(10);
+					/* clean rx */
+					rd = &rx_ring_data(priv, i);
+					if (rd->poll_one(rd, fetch_num,
+							 hns_nic_drop_rx_fetch))
+						break;
+				}
+
+				retry_times = 0;
+				while (retry_times++ < 10) {
+					mdelay(10);
+					/* clean tx ring 0 send package */
+					rd = &tx_ring_data(priv,
+							   HNS_LB_TX_RING);
+					if (rd->poll_one(rd, fetch_num, NULL))
+						break;
+				}
+			}
+		}
+	}
+
+out:
+	/* restore everything */
+	ops->set_rss(h, org_indir, NULL, 0);
+	hns_disable_serdes_lb(ndev);
+enable_serdes_lb_err:
+	kfree(cur_indir);
+cur_indir_alloc_err:
+	kfree(org_indir);
+
+	return ret;
+}
+
 static int hns_nic_change_mtu(struct net_device *ndev, int new_mtu)
 {
 	struct hns_nic_priv *priv = netdev_priv(ndev);
 	struct hnae_handle *h = priv->ae_handle;
+	bool if_running = netif_running(ndev);
 	int ret;
 
+	/* MTU < 68 is an error and causes problems on some kernels */
+	if (new_mtu < 68)
+		return -EINVAL;
+
+	/* MTU no change */
+	if (new_mtu == ndev->mtu)
+		return 0;
+
 	if (!h->dev->ops->set_mtu)
 		return -ENOTSUPP;
 
-	if (netif_running(ndev)) {
+	if (if_running) {
 		(void)hns_nic_net_stop(ndev);
 		msleep(100);
+	}
 
-		ret = h->dev->ops->set_mtu(h, new_mtu);
-		if (ret)
-			netdev_err(ndev, "set mtu fail, return value %d\n",
-				   ret);
+	if (priv->enet_ver != AE_VERSION_1 &&
+	    ndev->mtu <= BD_SIZE_2048_MAX_MTU &&
+	    new_mtu > BD_SIZE_2048_MAX_MTU) {
+		/* update desc */
+		hnae_reinit_all_ring_desc(h);
 
-		if (hns_nic_net_open(ndev))
-			netdev_err(ndev, "hns net open fail\n");
-	} else {
-		ret = h->dev->ops->set_mtu(h, new_mtu);
+		/* clear the package which the chip has fetched */
+		ret = hns_nic_clear_all_rx_fetch(ndev);
+
+		/* the page offset must be consist with desc */
+		hnae_reinit_all_ring_page_off(h);
+
+		if (ret) {
+			netdev_err(ndev, "clear the fetched desc fail\n");
+			goto out;
+		}
+	}
+
+	ret = h->dev->ops->set_mtu(h, new_mtu);
+	if (ret) {
+		netdev_err(ndev, "set mtu fail, return value %d\n",
+			   ret);
+		goto out;
 	}
 
-	if (!ret)
-		ndev->mtu = new_mtu;
+	/* finally, set new mtu to netdevice */
+	ndev->mtu = new_mtu;
+
+out:
+	if (if_running) {
+		if (hns_nic_net_open(ndev)) {
+			netdev_err(ndev, "hns net open fail\n");
+			ret = -EINVAL;
+		}
+	}
 
 	return ret;
 }
-- 
2.7.4

[PATCH V4 net-next 08/18] net: hns: Replace netif_tx_lock to ring spin lock

[Salil Mehta]

From: lipeng <lipeng321@huawei.com>

netif_tx_lock is a global spin lock, it will take affect
in all rings in the netdevice. In tx_poll_one process, it can
only lock the current ring, in this case, we define a spin lock
in hnae_ring struct for it.

Signed-off-by: lipeng <lipeng321@huawei.com>
reviewed-by: Yisen Zhuang <yisen.zhuang@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns/hnae.c     |  1 +
 drivers/net/ethernet/hisilicon/hns/hnae.h     |  3 +++
 drivers/net/ethernet/hisilicon/hns/hns_enet.c | 21 +++++++++++----------
 3 files changed, 15 insertions(+), 10 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hnae.c b/drivers/net/ethernet/hisilicon/hns/hnae.c
index 78af663..513c257 100644
--- a/drivers/net/ethernet/hisilicon/hns/hnae.c
+++ b/drivers/net/ethernet/hisilicon/hns/hnae.c
@@ -196,6 +196,7 @@ hnae_init_ring(struct hnae_queue *q, struct hnae_ring *ring, int flags)
 
 	ring->q = q;
 	ring->flags = flags;
+	spin_lock_init(&ring->lock);
 	assert(!ring->desc && !ring->desc_cb && !ring->desc_dma_addr);
 
 	/* not matter for tx or rx ring, the ntc and ntc start from 0 */
diff --git a/drivers/net/ethernet/hisilicon/hns/hnae.h b/drivers/net/ethernet/hisilicon/hns/hnae.h
index c66581d..859c536 100644
--- a/drivers/net/ethernet/hisilicon/hns/hnae.h
+++ b/drivers/net/ethernet/hisilicon/hns/hnae.h
@@ -275,6 +275,9 @@ struct hnae_ring {
 	/* statistic */
 	struct ring_stats stats;
 
+	/* ring lock for poll one */
+	spinlock_t lock;
+
 	dma_addr_t desc_dma_addr;
 	u32 buf_size;       /* size for hnae_desc->addr, preset by AE */
 	u16 desc_num;       /* total number of desc */
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.c b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
index 57b4d59..e39c794 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
@@ -922,12 +922,13 @@ static int is_valid_clean_head(struct hnae_ring *ring, int h)
 
 /* netif_tx_lock will turn down the performance, set only when necessary */
 #ifdef CONFIG_NET_POLL_CONTROLLER
-#define NETIF_TX_LOCK(ndev) netif_tx_lock(ndev)
-#define NETIF_TX_UNLOCK(ndev) netif_tx_unlock(ndev)
+#define NETIF_TX_LOCK(ring) spin_lock(&ring->lock)
+#define NETIF_TX_UNLOCK(ring) spin_unlock(&ring->lock)
 #else
-#define NETIF_TX_LOCK(ndev)
-#define NETIF_TX_UNLOCK(ndev)
+#define NETIF_TX_LOCK(ring)
+#define NETIF_TX_UNLOCK(ring)
 #endif
+
 /* reclaim all desc in one budget
  * return error or number of desc left
  */
@@ -941,13 +942,13 @@ static int hns_nic_tx_poll_one(struct hns_nic_ring_data *ring_data,
 	int head;
 	int bytes, pkts;
 
-	NETIF_TX_LOCK(ndev);
+	NETIF_TX_LOCK(ring);
 
 	head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
 	rmb(); /* make sure head is ready before touch any data */
 
 	if (is_ring_empty(ring) || head == ring->next_to_clean) {
-		NETIF_TX_UNLOCK(ndev);
+		NETIF_TX_UNLOCK(ring);
 		return 0; /* no data to poll */
 	}
 
@@ -955,7 +956,7 @@ static int hns_nic_tx_poll_one(struct hns_nic_ring_data *ring_data,
 		netdev_err(ndev, "wrong head (%d, %d-%d)\n", head,
 			   ring->next_to_use, ring->next_to_clean);
 		ring->stats.io_err_cnt++;
-		NETIF_TX_UNLOCK(ndev);
+		NETIF_TX_UNLOCK(ring);
 		return -EIO;
 	}
 
@@ -967,7 +968,7 @@ static int hns_nic_tx_poll_one(struct hns_nic_ring_data *ring_data,
 		prefetch(&ring->desc_cb[ring->next_to_clean]);
 	}
 
-	NETIF_TX_UNLOCK(ndev);
+	NETIF_TX_UNLOCK(ring);
 
 	dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index);
 	netdev_tx_completed_queue(dev_queue, pkts, bytes);
@@ -1028,7 +1029,7 @@ static void hns_nic_tx_clr_all_bufs(struct hns_nic_ring_data *ring_data)
 	int head;
 	int bytes, pkts;
 
-	NETIF_TX_LOCK(ndev);
+	NETIF_TX_LOCK(ring);
 
 	head = ring->next_to_use; /* ntu :soft setted ring position*/
 	bytes = 0;
@@ -1036,7 +1037,7 @@ static void hns_nic_tx_clr_all_bufs(struct hns_nic_ring_data *ring_data)
 	while (head != ring->next_to_clean)
 		hns_nic_reclaim_one_desc(ring, &bytes, &pkts);
 
-	NETIF_TX_UNLOCK(ndev);
+	NETIF_TX_UNLOCK(ring);
 
 	dev_queue = netdev_get_tx_queue(ndev, ring_data->queue_index);
 	netdev_tx_reset_queue(dev_queue);
-- 
2.7.4

[PATCH V4 net-next 09/18] net: hns: Correct HNS RSS key set function

[Salil Mehta]

From: lipeng <lipeng321@huawei.com>

This patch fixes below ethtool configuration error:

localhost:~ # ethtool -X eth0 hkey XX:XX:XX...
Cannot set Rx flow hash configuration: Operation not supported

Signed-off-by: lipeng <lipeng321@huawei.com>
Reviewed-by: Yisen Zhuang <yisen.zhuang@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c | 23 ++++++++++++++---------
 drivers/net/ethernet/hisilicon/hns/hns_ethtool.c  |  9 ++++-----
 2 files changed, 18 insertions(+), 14 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c b/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c
index cd7e88e..f0142e5 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c
@@ -826,8 +826,9 @@ static int hns_ae_get_rss(struct hnae_handle *handle, u32 *indir, u8 *key,
 		memcpy(key, ppe_cb->rss_key, HNS_PPEV2_RSS_KEY_SIZE);
 
 	/* update the current hash->queue mappings from the shadow RSS table */
-	memcpy(indir, ppe_cb->rss_indir_table,
-	       HNS_PPEV2_RSS_IND_TBL_SIZE * sizeof(*indir));
+	if (indir)
+		memcpy(indir, ppe_cb->rss_indir_table,
+		       HNS_PPEV2_RSS_IND_TBL_SIZE  * sizeof(*indir));
 
 	return 0;
 }
@@ -838,15 +839,19 @@ static int hns_ae_set_rss(struct hnae_handle *handle, const u32 *indir,
 	struct hns_ppe_cb *ppe_cb = hns_get_ppe_cb(handle);
 
 	/* set the RSS Hash Key if specififed by the user */
-	if (key)
-		hns_ppe_set_rss_key(ppe_cb, (u32 *)key);
+	if (key) {
+		memcpy(ppe_cb->rss_key, key, HNS_PPEV2_RSS_KEY_SIZE);
+		hns_ppe_set_rss_key(ppe_cb, ppe_cb->rss_key);
+	}
 
-	/* update the shadow RSS table with user specified qids */
-	memcpy(ppe_cb->rss_indir_table, indir,
-	       HNS_PPEV2_RSS_IND_TBL_SIZE * sizeof(*indir));
+	if (indir) {
+		/* update the shadow RSS table with user specified qids */
+		memcpy(ppe_cb->rss_indir_table, indir,
+		       HNS_PPEV2_RSS_IND_TBL_SIZE  * sizeof(*indir));
 
-	/* now update the hardware */
-	hns_ppe_set_indir_table(ppe_cb, ppe_cb->rss_indir_table);
+		/* now update the hardware */
+		hns_ppe_set_indir_table(ppe_cb, ppe_cb->rss_indir_table);
+	}
 
 	return 0;
 }
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
index 3404eac..3a2a342 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
@@ -1244,6 +1244,7 @@ hns_set_rss(struct net_device *netdev, const u32 *indir, const u8 *key,
 {
 	struct hns_nic_priv *priv = netdev_priv(netdev);
 	struct hnae_ae_ops *ops;
+	int ret;
 
 	if (AE_IS_VER1(priv->enet_ver)) {
 		netdev_err(netdev,
@@ -1253,12 +1254,10 @@ hns_set_rss(struct net_device *netdev, const u32 *indir, const u8 *key,
 
 	ops = priv->ae_handle->dev->ops;
 
-	/* currently hfunc can only be Toeplitz hash */
-	if (key ||
-	    (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP))
+	if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP) {
+		netdev_err(netdev, "Invalid hfunc!\n");
 		return -EOPNOTSUPP;
-	if (!indir)
-		return 0;
+	}
 
 	return ops->set_rss(priv->ae_handle, indir, key, hfunc);
 }
-- 
2.7.4

[PATCH V4 net-next 10/18] net: hns: Remove the redundant adding and deleting mac function

[Salil Mehta]

From: Kejian Yan <yankejian@huawei.com>

The functions (hns_dsaf_set_mac_mc_entry() and hns_mac_del_mac()) are
not called by any functions. They are dead code in hns. And the same
features are implemented by the patch (the id is 66355f5).

Reported-by: Weiwei Deng <dengweiwei@huawei.com>
Signed-off-by: Kejian Yan <yankejian@huawei.com>
Reviewed-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c  | 38 ----------
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h  |  1 -
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c | 81 ----------------------
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h |  2 -
 4 files changed, 122 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c
index edf9a23..696f2ae 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c
@@ -332,44 +332,6 @@ int hns_mac_set_multi(struct hns_mac_cb *mac_cb,
 	return 0;
 }
 
-/**
- *hns_mac_del_mac - delete mac address into dsaf table,can't delete the same
- *                  address twice
- *@net_dev: net device
- *@vfn :   vf lan
- *@mac : mac address
- *return status
- */
-int hns_mac_del_mac(struct hns_mac_cb *mac_cb, u32 vfn, char *mac)
-{
-	struct mac_entry_idx *old_mac;
-	struct dsaf_device *dsaf_dev;
-	u32 ret;
-
-	dsaf_dev = mac_cb->dsaf_dev;
-
-	if (vfn < DSAF_MAX_VM_NUM) {
-		old_mac = &mac_cb->addr_entry_idx[vfn];
-	} else {
-		dev_err(mac_cb->dev,
-			"vf queue is too large, %s mac%d queue = %#x!\n",
-			mac_cb->dsaf_dev->ae_dev.name, mac_cb->mac_id, vfn);
-		return -EINVAL;
-	}
-
-	if (dsaf_dev) {
-		ret = hns_dsaf_del_mac_entry(dsaf_dev, old_mac->vlan_id,
-					     mac_cb->mac_id, old_mac->addr);
-		if (ret)
-			return ret;
-
-		if (memcmp(old_mac->addr, mac, sizeof(old_mac->addr)) == 0)
-			old_mac->valid = 0;
-	}
-
-	return 0;
-}
-
 int hns_mac_clr_multicast(struct hns_mac_cb *mac_cb, int vfn)
 {
 	struct dsaf_device *dsaf_dev = mac_cb->dsaf_dev;
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h
index 7f14d91..e6842c9 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h
@@ -436,7 +436,6 @@ int hns_mac_set_multi(struct hns_mac_cb *mac_cb,
 int hns_mac_vm_config_bc_en(struct hns_mac_cb *mac_cb, u32 vm, bool enable);
 void hns_mac_start(struct hns_mac_cb *mac_cb);
 void hns_mac_stop(struct hns_mac_cb *mac_cb);
-int hns_mac_del_mac(struct hns_mac_cb *mac_cb, u32 vfn, char *mac);
 void hns_mac_uninit(struct dsaf_device *dsaf_dev);
 void hns_mac_adjust_link(struct hns_mac_cb *mac_cb, int speed, int duplex);
 void hns_mac_reset(struct hns_mac_cb *mac_cb);
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
index 90dbda7..6a069ff 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
@@ -1647,87 +1647,6 @@ int hns_dsaf_rm_mac_addr(
 				      mac_entry->addr);
 }
 
-/**
- * hns_dsaf_set_mac_mc_entry - set mac mc-entry
- * @dsaf_dev: dsa fabric device struct pointer
- * @mac_entry: mc-mac entry
- */
-int hns_dsaf_set_mac_mc_entry(
-	struct dsaf_device *dsaf_dev,
-	struct dsaf_drv_mac_multi_dest_entry *mac_entry)
-{
-	u16 entry_index = DSAF_INVALID_ENTRY_IDX;
-	struct dsaf_drv_tbl_tcam_key mac_key;
-	struct dsaf_tbl_tcam_mcast_cfg mac_data;
-	struct dsaf_drv_priv *priv =
-	    (struct dsaf_drv_priv *)hns_dsaf_dev_priv(dsaf_dev);
-	struct dsaf_drv_soft_mac_tbl *soft_mac_entry = priv->soft_mac_tbl;
-	struct dsaf_drv_tbl_tcam_key tmp_mac_key;
-	struct dsaf_tbl_tcam_data tcam_data;
-
-	/* mac addr check */
-	if (MAC_IS_ALL_ZEROS(mac_entry->addr)) {
-		dev_err(dsaf_dev->dev, "set uc %s Mac %pM err!\n",
-			dsaf_dev->ae_dev.name, mac_entry->addr);
-		return -EINVAL;
-	}
-
-	/*config key */
-	hns_dsaf_set_mac_key(dsaf_dev, &mac_key,
-			     mac_entry->in_vlan_id,
-			     mac_entry->in_port_num, mac_entry->addr);
-
-	/* entry ie exist? */
-	entry_index = hns_dsaf_find_soft_mac_entry(dsaf_dev, &mac_key);
-	if (entry_index == DSAF_INVALID_ENTRY_IDX) {
-		/*if hasnot, find enpty entry*/
-		entry_index = hns_dsaf_find_empty_mac_entry(dsaf_dev);
-		if (entry_index == DSAF_INVALID_ENTRY_IDX) {
-			/*if hasnot empty, error*/
-			dev_err(dsaf_dev->dev,
-				"set_uc_entry failed, %s Mac key(%#x:%#x)\n",
-				dsaf_dev->ae_dev.name,
-				mac_key.high.val, mac_key.low.val);
-			return -EINVAL;
-		}
-
-		/* config hardware entry */
-		memset(mac_data.tbl_mcast_port_msk,
-		       0, sizeof(mac_data.tbl_mcast_port_msk));
-	} else {
-		/* config hardware entry */
-		hns_dsaf_tcam_mc_get(dsaf_dev, entry_index, &tcam_data,
-				     &mac_data);
-
-		tmp_mac_key.high.val =
-			le32_to_cpu(tcam_data.tbl_tcam_data_high);
-		tmp_mac_key.low.val = le32_to_cpu(tcam_data.tbl_tcam_data_low);
-	}
-	mac_data.tbl_mcast_old_en = 0;
-	mac_data.tbl_mcast_item_vld = 1;
-	dsaf_set_field(mac_data.tbl_mcast_port_msk[0],
-		       0x3F, 0, mac_entry->port_mask[0]);
-
-	dev_dbg(dsaf_dev->dev,
-		"set_uc_entry, %s key(%#x:%#x) entry_index%d\n",
-		dsaf_dev->ae_dev.name, mac_key.high.val,
-		mac_key.low.val, entry_index);
-
-	tcam_data.tbl_tcam_data_high = cpu_to_le32(mac_key.high.val);
-	tcam_data.tbl_tcam_data_low = cpu_to_le32(mac_key.low.val);
-
-	hns_dsaf_tcam_mc_cfg(dsaf_dev, entry_index, &tcam_data, NULL,
-			     &mac_data);
-
-	/* config software entry */
-	soft_mac_entry += entry_index;
-	soft_mac_entry->index = entry_index;
-	soft_mac_entry->tcam_key.high.val = mac_key.high.val;
-	soft_mac_entry->tcam_key.low.val = mac_key.low.val;
-
-	return 0;
-}
-
 static void hns_dsaf_mc_mask_bit_clear(char *dst, const char *src)
 {
 	u16 *a = (u16 *)dst;
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
index cef6bf4..e2d71be 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
@@ -429,8 +429,6 @@ static inline struct hnae_vf_cb *hns_ae_get_vf_cb(
 
 int hns_dsaf_set_mac_uc_entry(struct dsaf_device *dsaf_dev,
 			      struct dsaf_drv_mac_single_dest_entry *mac_entry);
-int hns_dsaf_set_mac_mc_entry(struct dsaf_device *dsaf_dev,
-			      struct dsaf_drv_mac_multi_dest_entry *mac_entry);
 int hns_dsaf_add_mac_mc_port(struct dsaf_device *dsaf_dev,
 			     struct dsaf_drv_mac_single_dest_entry *mac_entry);
 int hns_dsaf_del_mac_entry(struct dsaf_device *dsaf_dev, u16 vlan_id,
-- 
2.7.4

[PATCH V4 net-next 11/18] net: hns: Remove redundant mac_get_id()

[Salil Mehta]

From: Kejian Yan <yankejian@huawei.com>

There is a mac_id in mac control block structure, so the callback
function mac_get_id() is useless. Here we remove this function.

Reported-by: Weiwei Deng <dengweiwei@huawei.com>
Signed-off-by: Kejian Yan <yankejian@huawei.com>
Reviewed-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c  |  8 --------
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h   |  2 --
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_xgmac.c | 13 -------------
 3 files changed, 23 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c
index 723f3ae..035db86 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c
@@ -466,13 +466,6 @@ static int hns_gmac_config_loopback(void *mac_drv, enum hnae_loop loop_mode,
 	return 0;
 }
 
-static void hns_gmac_get_id(void *mac_drv, u8 *mac_id)
-{
-	struct mac_driver *drv = (struct mac_driver *)mac_drv;
-
-	*mac_id = drv->mac_id;
-}
-
 static void hns_gmac_get_info(void *mac_drv, struct mac_info *mac_info)
 {
 	enum hns_gmac_duplex_mdoe duplex;
@@ -714,7 +707,6 @@ void *hns_gmac_config(struct hns_mac_cb *mac_cb, struct mac_params *mac_param)
 	mac_drv->config_pad_and_crc = hns_gmac_config_pad_and_crc;
 	mac_drv->config_half_duplex = hns_gmac_set_duplex_type;
 	mac_drv->set_rx_ignore_pause_frames = hns_gmac_set_rx_auto_pause_frames;
-	mac_drv->mac_get_id = hns_gmac_get_id;
 	mac_drv->get_info = hns_gmac_get_info;
 	mac_drv->autoneg_stat = hns_gmac_autoneg_stat;
 	mac_drv->get_pause_enable = hns_gmac_get_pausefrm_cfg;
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h
index e6842c9..24dfba5 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.h
@@ -373,8 +373,6 @@ struct mac_driver {
 	void (*set_rx_ignore_pause_frames)(void *mac_drv, u32 enable);
 	/* config rx mode for promiscuous*/
 	void (*set_promiscuous)(void *mac_drv, u8 enable);
-	/* get mac id */
-	void (*mac_get_id)(void *mac_drv, u8 *mac_id);
 	void (*mac_pausefrm_cfg)(void *mac_drv, u32 rx_en, u32 tx_en);
 
 	void (*autoneg_stat)(void *mac_drv, u32 *enable);
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_xgmac.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_xgmac.c
index aae830a..37a2fc3 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_xgmac.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_xgmac.c
@@ -300,18 +300,6 @@ static void hns_xgmac_set_tx_auto_pause_frames(void *mac_drv, u16 enable)
 }
 
 /**
- *hns_xgmac_get_id - get xgmac port id
- *@mac_drv: mac driver
- *@newval:xgmac max frame length
- */
-static void hns_xgmac_get_id(void *mac_drv, u8 *mac_id)
-{
-	struct mac_driver *drv = (struct mac_driver *)mac_drv;
-
-	*mac_id = drv->mac_id;
-}
-
-/**
  *hns_xgmac_config_max_frame_length - set xgmac max frame length
  *@mac_drv: mac driver
  *@newval:xgmac max frame length
@@ -833,7 +821,6 @@ void *hns_xgmac_config(struct hns_mac_cb *mac_cb, struct mac_params *mac_param)
 	mac_drv->config_half_duplex = NULL;
 	mac_drv->set_rx_ignore_pause_frames =
 		hns_xgmac_set_rx_ignore_pause_frames;
-	mac_drv->mac_get_id = hns_xgmac_get_id;
 	mac_drv->mac_free = hns_xgmac_free;
 	mac_drv->adjust_link = NULL;
 	mac_drv->set_tx_auto_pause_frames = hns_xgmac_set_tx_auto_pause_frames;
-- 
2.7.4

[PATCH V4 net-next 12/18] net: hns: Remove redundant mac table operations

[Salil Mehta]

From: Kejian Yan <yankejian@huawei.com>

This patch removes redundant functions used only for debugging
purposes.

Reported-by: Weiwei Deng <dengweiwei@huawei.com>
Signed-off-by: Kejian Yan <yankejian@huawei.com>
Reviewed-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c | 160 ---------------------
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h |  10 --
 2 files changed, 170 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
index 6a069ff..abd8aec 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
@@ -2008,166 +2008,6 @@ int hns_dsaf_clr_mac_mc_port(struct dsaf_device *dsaf_dev, u8 mac_id,
 	return ret;
 }
 
-/**
- * hns_dsaf_get_mac_uc_entry - get mac uc entry
- * @dsaf_dev: dsa fabric device struct pointer
- * @mac_entry: mac entry
- */
-int hns_dsaf_get_mac_uc_entry(struct dsaf_device *dsaf_dev,
-			      struct dsaf_drv_mac_single_dest_entry *mac_entry)
-{
-	u16 entry_index = DSAF_INVALID_ENTRY_IDX;
-	struct dsaf_drv_tbl_tcam_key mac_key;
-
-	struct dsaf_tbl_tcam_ucast_cfg mac_data;
-	struct dsaf_tbl_tcam_data tcam_data;
-
-	/* check macaddr */
-	if (MAC_IS_ALL_ZEROS(mac_entry->addr) ||
-	    MAC_IS_BROADCAST(mac_entry->addr)) {
-		dev_err(dsaf_dev->dev, "get_entry failed,addr %pM\n",
-			mac_entry->addr);
-		return -EINVAL;
-	}
-
-	/*config key */
-	hns_dsaf_set_mac_key(dsaf_dev, &mac_key, mac_entry->in_vlan_id,
-			     mac_entry->in_port_num, mac_entry->addr);
-
-	/*check exist? */
-	entry_index = hns_dsaf_find_soft_mac_entry(dsaf_dev, &mac_key);
-	if (entry_index == DSAF_INVALID_ENTRY_IDX) {
-		/*find none, error */
-		dev_err(dsaf_dev->dev,
-			"get_uc_entry failed, %s Mac key(%#x:%#x)\n",
-			dsaf_dev->ae_dev.name,
-			mac_key.high.val, mac_key.low.val);
-		return -EINVAL;
-	}
-	dev_dbg(dsaf_dev->dev,
-		"get_uc_entry, %s Mac key(%#x:%#x) entry_index%d\n",
-		dsaf_dev->ae_dev.name, mac_key.high.val,
-		mac_key.low.val, entry_index);
-
-	/* read entry */
-	hns_dsaf_tcam_uc_get(dsaf_dev, entry_index, &tcam_data, &mac_data);
-
-	mac_key.high.val = le32_to_cpu(tcam_data.tbl_tcam_data_high);
-	mac_key.low.val = le32_to_cpu(tcam_data.tbl_tcam_data_low);
-
-	mac_entry->port_num = mac_data.tbl_ucast_out_port;
-
-	return 0;
-}
-
-/**
- * hns_dsaf_get_mac_mc_entry - get mac mc entry
- * @dsaf_dev: dsa fabric device struct pointer
- * @mac_entry: mac entry
- */
-int hns_dsaf_get_mac_mc_entry(struct dsaf_device *dsaf_dev,
-			      struct dsaf_drv_mac_multi_dest_entry *mac_entry)
-{
-	u16 entry_index = DSAF_INVALID_ENTRY_IDX;
-	struct dsaf_drv_tbl_tcam_key mac_key;
-
-	struct dsaf_tbl_tcam_mcast_cfg mac_data;
-	struct dsaf_tbl_tcam_data tcam_data;
-
-	/*check mac addr */
-	if (MAC_IS_ALL_ZEROS(mac_entry->addr) ||
-	    MAC_IS_BROADCAST(mac_entry->addr)) {
-		dev_err(dsaf_dev->dev, "get_entry failed,addr %pM\n",
-			mac_entry->addr);
-		return -EINVAL;
-	}
-
-	/*config key */
-	hns_dsaf_set_mac_key(dsaf_dev, &mac_key, mac_entry->in_vlan_id,
-			     mac_entry->in_port_num, mac_entry->addr);
-
-	/*check exist? */
-	entry_index = hns_dsaf_find_soft_mac_entry(dsaf_dev, &mac_key);
-	if (entry_index == DSAF_INVALID_ENTRY_IDX) {
-		/* find none, error */
-		dev_err(dsaf_dev->dev,
-			"get_mac_uc_entry failed, %s Mac key(%#x:%#x)\n",
-			dsaf_dev->ae_dev.name, mac_key.high.val,
-			mac_key.low.val);
-		return -EINVAL;
-	}
-	dev_dbg(dsaf_dev->dev,
-		"get_mac_uc_entry, %s Mac key(%#x:%#x) entry_index%d\n",
-		dsaf_dev->ae_dev.name, mac_key.high.val,
-		mac_key.low.val, entry_index);
-
-	/*read entry */
-	hns_dsaf_tcam_mc_get(dsaf_dev, entry_index, &tcam_data, &mac_data);
-
-	mac_key.high.val = le32_to_cpu(tcam_data.tbl_tcam_data_high);
-	mac_key.low.val = le32_to_cpu(tcam_data.tbl_tcam_data_low);
-
-	mac_entry->port_mask[0] = mac_data.tbl_mcast_port_msk[0] & 0x3F;
-	return 0;
-}
-
-/**
- * hns_dsaf_get_mac_entry_by_index - get mac entry by tab index
- * @dsaf_dev: dsa fabric device struct pointer
- * @entry_index: tab entry index
- * @mac_entry: mac entry
- */
-int hns_dsaf_get_mac_entry_by_index(
-	struct dsaf_device *dsaf_dev,
-	u16 entry_index, struct dsaf_drv_mac_multi_dest_entry *mac_entry)
-{
-	struct dsaf_drv_tbl_tcam_key mac_key;
-
-	struct dsaf_tbl_tcam_mcast_cfg mac_data;
-	struct dsaf_tbl_tcam_ucast_cfg mac_uc_data;
-	struct dsaf_tbl_tcam_data tcam_data;
-	char mac_addr[ETH_ALEN] = {0};
-
-	if (entry_index >= dsaf_dev->tcam_max_num) {
-		/* find none, del error */
-		dev_err(dsaf_dev->dev, "get_uc_entry failed, %s\n",
-			dsaf_dev->ae_dev.name);
-		return -EINVAL;
-	}
-
-	/* mc entry, do read opt */
-	hns_dsaf_tcam_mc_get(dsaf_dev, entry_index, &tcam_data, &mac_data);
-
-	mac_key.high.val = le32_to_cpu(tcam_data.tbl_tcam_data_high);
-	mac_key.low.val = le32_to_cpu(tcam_data.tbl_tcam_data_low);
-
-	mac_entry->port_mask[0] = mac_data.tbl_mcast_port_msk[0] & 0x3F;
-
-	/***get mac addr*/
-	mac_addr[0] = mac_key.high.bits.mac_0;
-	mac_addr[1] = mac_key.high.bits.mac_1;
-	mac_addr[2] = mac_key.high.bits.mac_2;
-	mac_addr[3] = mac_key.high.bits.mac_3;
-	mac_addr[4] = mac_key.low.bits.mac_4;
-	mac_addr[5] = mac_key.low.bits.mac_5;
-	/**is mc or uc*/
-	if (MAC_IS_MULTICAST((u8 *)mac_addr) ||
-	    MAC_IS_L3_MULTICAST((u8 *)mac_addr)) {
-		/**mc donot do*/
-	} else {
-		/*is not mc, just uc... */
-		hns_dsaf_tcam_uc_get(dsaf_dev, entry_index, &tcam_data,
-				     &mac_uc_data);
-
-		mac_key.high.val = le32_to_cpu(tcam_data.tbl_tcam_data_high);
-		mac_key.low.val = le32_to_cpu(tcam_data.tbl_tcam_data_low);
-
-		mac_entry->port_mask[0] = (1 << mac_uc_data.tbl_ucast_out_port);
-	}
-
-	return 0;
-}
-
 static struct dsaf_device *hns_dsaf_alloc_dev(struct device *dev,
 					      size_t sizeof_priv)
 {
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
index e2d71be..4db02e2 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
@@ -435,15 +435,6 @@ int hns_dsaf_del_mac_entry(struct dsaf_device *dsaf_dev, u16 vlan_id,
 			   u8 in_port_num, u8 *addr);
 int hns_dsaf_del_mac_mc_port(struct dsaf_device *dsaf_dev,
 			     struct dsaf_drv_mac_single_dest_entry *mac_entry);
-int hns_dsaf_get_mac_uc_entry(struct dsaf_device *dsaf_dev,
-			      struct dsaf_drv_mac_single_dest_entry *mac_entry);
-int hns_dsaf_get_mac_mc_entry(struct dsaf_device *dsaf_dev,
-			      struct dsaf_drv_mac_multi_dest_entry *mac_entry);
-int hns_dsaf_get_mac_entry_by_index(
-	struct dsaf_device *dsaf_dev,
-	u16 entry_index,
-	struct dsaf_drv_mac_multi_dest_entry *mac_entry);
-
 void hns_dsaf_fix_mac_mode(struct hns_mac_cb *mac_cb);
 
 int hns_dsaf_ae_init(struct dsaf_device *dsaf_dev);
@@ -473,5 +464,4 @@ int hns_dsaf_rm_mac_addr(
 int hns_dsaf_clr_mac_mc_port(struct dsaf_device *dsaf_dev,
 			     u8 mac_id, u8 port_num);
 
-
 #endif /* __HNS_DSAF_MAIN_H__ */
-- 
2.7.4

[PATCH V4 net-next 13/18] net: hns: Clean redundant code from hns_mdio.c file

[Salil Mehta]

From: Kejian Yan <yankejian@huawei.com>

This patch cleans the redundant code from  hns_mdio.c.

Reported-by: Ping Zhang <zhangping5@huawei.com>
Signed-off-by: Kejian Yan <yankejian@huawei.com>
Reviewed-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns_mdio.c | 10 ----------
 1 file changed, 10 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns_mdio.c b/drivers/net/ethernet/hisilicon/hns_mdio.c
index 501eb20..fad1c5b 100644
--- a/drivers/net/ethernet/hisilicon/hns_mdio.c
+++ b/drivers/net/ethernet/hisilicon/hns_mdio.c
@@ -23,17 +23,9 @@
 #include <linux/phy.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
-#include <linux/spinlock_types.h>
 
 #define MDIO_DRV_NAME "Hi-HNS_MDIO"
 #define MDIO_BUS_NAME "Hisilicon MII Bus"
-#define MDIO_DRV_VERSION "1.3.0"
-#define MDIO_COPYRIGHT "Copyright(c) 2015 Huawei Corporation."
-#define MDIO_DRV_STRING MDIO_BUS_NAME
-#define MDIO_DEFAULT_DEVICE_DESCR MDIO_BUS_NAME
-
-#define MDIO_CTL_DEV_ADDR(x)	(x & 0x1f)
-#define MDIO_CTL_PORT_ADDR(x)	((x & 0x1f) << 5)
 
 #define MDIO_TIMEOUT			1000000
 
@@ -64,9 +56,7 @@ struct hns_mdio_device {
 #define MDIO_CMD_DEVAD_S	0
 #define MDIO_CMD_PRTAD_M	0x1f
 #define MDIO_CMD_PRTAD_S	5
-#define MDIO_CMD_OP_M		0x3
 #define MDIO_CMD_OP_S		10
-#define MDIO_CMD_ST_M		0x3
 #define MDIO_CMD_ST_S		12
 #define MDIO_CMD_START_B	14
 
-- 
2.7.4

[PATCH V4 net-next 14/18] net: hns: Optimise the code in hns_mdio_wait_ready()

[Salil Mehta]

From: Kejian Yan <yankejian@huawei.com>

This patch fixes the code to clear pclint warning/info.

Reported-by: Ping Zhang <zhangping5@huawei.com>
Signed-off-by: Kejian Yan <yankejian@huawei.com>
Reviewed-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns_mdio.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns_mdio.c b/drivers/net/ethernet/hisilicon/hns_mdio.c
index fad1c5b..e5221d9 100644
--- a/drivers/net/ethernet/hisilicon/hns_mdio.c
+++ b/drivers/net/ethernet/hisilicon/hns_mdio.c
@@ -175,18 +175,20 @@ static int mdio_sc_cfg_reg_write(struct hns_mdio_device *mdio_dev,
 static int hns_mdio_wait_ready(struct mii_bus *bus)
 {
 	struct hns_mdio_device *mdio_dev = bus->priv;
+	u32 cmd_reg_value;
 	int i;
-	u32 cmd_reg_value = 1;
 
 	/* waitting for MDIO_COMMAND_REG 's mdio_start==0 */
 	/* after that can do read or write*/
-	for (i = 0; cmd_reg_value; i++) {
+	for (i = 0; i < MDIO_TIMEOUT; i++) {
 		cmd_reg_value = MDIO_GET_REG_BIT(mdio_dev,
 						 MDIO_COMMAND_REG,
 						 MDIO_CMD_START_B);
-		if (i == MDIO_TIMEOUT)
-			return -ETIMEDOUT;
+		if (!cmd_reg_value)
+			break;
 	}
+	if ((i == MDIO_TIMEOUT) && cmd_reg_value)
+		return -ETIMEDOUT;
 
 	return 0;
 }
-- 
2.7.4

[PATCH V4 net-next 15/18] net: hns: Simplify the exception sequence in hns_ppe_init()

[Salil Mehta]

From: Kejian Yan <yankejian@huawei.com>

We need to free all ppe submodule if it fails to initialize ppe by
any fault, so this patch will free all ppe resource before
hns_ppe_init() returns exception situation

Reported-by: JinchuanTian <tianjinchuan1@huawei.com>
Signed-off-by: Kejian Yan <yankejian@huawei.com>
Reviewed-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c
index 6ea8722..eba406b 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c
@@ -496,17 +496,17 @@ void hns_ppe_get_stats(struct hns_ppe_cb *ppe_cb, u64 *data)
  */
 int hns_ppe_init(struct dsaf_device *dsaf_dev)
 {
-	int i, k;
 	int ret;
+	int i;
 
 	for (i = 0; i < HNS_PPE_COM_NUM; i++) {
 		ret = hns_ppe_common_get_cfg(dsaf_dev, i);
 		if (ret)
-			goto get_ppe_cfg_fail;
+			goto get_cfg_fail;
 
 		ret = hns_rcb_common_get_cfg(dsaf_dev, i);
 		if (ret)
-			goto get_rcb_cfg_fail;
+			goto get_cfg_fail;
 
 		hns_ppe_get_cfg(dsaf_dev->ppe_common[i]);
 
@@ -518,13 +518,12 @@ int hns_ppe_init(struct dsaf_device *dsaf_dev)
 
 	return 0;
 
-get_rcb_cfg_fail:
-	hns_ppe_common_free_cfg(dsaf_dev, i);
-get_ppe_cfg_fail:
-	for (k = i - 1; k >= 0; k--) {
-		hns_rcb_common_free_cfg(dsaf_dev, k);
-		hns_ppe_common_free_cfg(dsaf_dev, k);
+get_cfg_fail:
+	for (i = 0; i < HNS_PPE_COM_NUM; i++) {
+		hns_rcb_common_free_cfg(dsaf_dev, i);
+		hns_ppe_common_free_cfg(dsaf_dev, i);
 	}
+
 	return ret;
 }
 
-- 
2.7.4

[PATCH V4 net-next 16/18] net: hns: Adjust the SBM module buffer threshold

[Salil Mehta]

From: Kejian Yan <yankejian@huawei.com>

HNS needs SMB Buffers to store at least two packets after sending
pause frame because of the link delay. The MTU of HNS is 9728. As
the processor user manual described, the SBM buffer threshold should
be modified.

Reported-by: Ping Zhang <zhangping5@huawei.com>
Signed-off-by: Kejian Yan <yankejian@huawei.com>
Reviewed-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
index abd8aec..d07b4fe 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
@@ -510,10 +510,10 @@ static void hns_dsafv2_sbm_bp_wl_cfg(struct dsaf_device *dsaf_dev)
 		o_sbm_bp_cfg = dsaf_read_dev(dsaf_dev, reg);
 		dsaf_set_field(o_sbm_bp_cfg,
 			       DSAFV2_SBM_CFG3_SET_BUF_NUM_NO_PFC_M,
-			       DSAFV2_SBM_CFG3_SET_BUF_NUM_NO_PFC_S, 48);
+			       DSAFV2_SBM_CFG3_SET_BUF_NUM_NO_PFC_S, 55);
 		dsaf_set_field(o_sbm_bp_cfg,
 			       DSAFV2_SBM_CFG3_RESET_BUF_NUM_NO_PFC_M,
-			       DSAFV2_SBM_CFG3_RESET_BUF_NUM_NO_PFC_S, 80);
+			       DSAFV2_SBM_CFG3_RESET_BUF_NUM_NO_PFC_S, 110);
 		dsaf_write_dev(dsaf_dev, reg, o_sbm_bp_cfg);
 
 		/* for no enable pfc mode */
@@ -521,10 +521,10 @@ static void hns_dsafv2_sbm_bp_wl_cfg(struct dsaf_device *dsaf_dev)
 		o_sbm_bp_cfg = dsaf_read_dev(dsaf_dev, reg);
 		dsaf_set_field(o_sbm_bp_cfg,
 			       DSAFV2_SBM_CFG4_SET_BUF_NUM_NO_PFC_M,
-			       DSAFV2_SBM_CFG4_SET_BUF_NUM_NO_PFC_S, 192);
+			       DSAFV2_SBM_CFG4_SET_BUF_NUM_NO_PFC_S, 128);
 		dsaf_set_field(o_sbm_bp_cfg,
 			       DSAFV2_SBM_CFG4_RESET_BUF_NUM_NO_PFC_M,
-			       DSAFV2_SBM_CFG4_RESET_BUF_NUM_NO_PFC_S, 240);
+			       DSAFV2_SBM_CFG4_RESET_BUF_NUM_NO_PFC_S, 192);
 		dsaf_write_dev(dsaf_dev, reg, o_sbm_bp_cfg);
 	}
 
-- 
2.7.4

[PATCH V4 net-next 17/18] net: hns: Avoid Hip06 chip TX packet line bug

[Salil Mehta]

From: lipeng <lipeng321@huawei.com>

There is a bug on Hip06 that tx ring interrupts packets count will be
clear when drivers send data to tx ring, so that the tx packets count
will never upgrade to packets line, and cause the interrupts engendered
was delayed.
Sometimes, it will cause sending performance lower than expected.

To fix this bug, we set tx ring interrupts packets line to 1 forever,
to avoid count clear. And set the gap time to 20us, to solve the problem
that too many interrupts engendered when packets line is 1.

This patch could advance the send performance on ARM  from 6.6G to 9.37G
when an iperf send thread on ARM and an iperf send thread on X86 for XGE.

Signed-off-by: lipeng <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns/hnae.c         |   5 ++
 drivers/net/ethernet/hisilicon/hns/hnae.h         |   6 +-
 drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c |  78 ++++++++++++-----
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c | 101 ++++++++++++++++------
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h |  23 ++++-
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h |   2 +-
 drivers/net/ethernet/hisilicon/hns/hns_ethtool.c  |  24 +++--
 7 files changed, 169 insertions(+), 70 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hnae.c b/drivers/net/ethernet/hisilicon/hns/hnae.c
index 513c257..8950b74 100644
--- a/drivers/net/ethernet/hisilicon/hns/hnae.c
+++ b/drivers/net/ethernet/hisilicon/hns/hnae.c
@@ -57,10 +57,15 @@ static int hnae_alloc_buffer(struct hnae_ring *ring, struct hnae_desc_cb *cb)
 
 static void hnae_free_buffer(struct hnae_ring *ring, struct hnae_desc_cb *cb)
 {
+	if (unlikely(!cb->priv))
+		return;
+
 	if (cb->type == DESC_TYPE_SKB)
 		dev_kfree_skb_any((struct sk_buff *)cb->priv);
 	else if (unlikely(is_rx_ring(ring)))
 		put_page((struct page *)cb->priv);
+
+	cb->priv = NULL;
 }
 
 static int hnae_map_buffer(struct hnae_ring *ring, struct hnae_desc_cb *cb)
diff --git a/drivers/net/ethernet/hisilicon/hns/hnae.h b/drivers/net/ethernet/hisilicon/hns/hnae.h
index 859c536..0943138 100644
--- a/drivers/net/ethernet/hisilicon/hns/hnae.h
+++ b/drivers/net/ethernet/hisilicon/hns/hnae.h
@@ -488,11 +488,11 @@ struct hnae_ae_ops {
 			      u32 auto_neg, u32 rx_en, u32 tx_en);
 	void (*get_coalesce_usecs)(struct hnae_handle *handle,
 				   u32 *tx_usecs, u32 *rx_usecs);
-	void (*get_rx_max_coalesced_frames)(struct hnae_handle *handle,
-					    u32 *tx_frames, u32 *rx_frames);
+	void (*get_max_coalesced_frames)(struct hnae_handle *handle,
+					 u32 *tx_frames, u32 *rx_frames);
 	int (*set_coalesce_usecs)(struct hnae_handle *handle, u32 timeout);
 	int (*set_coalesce_frames)(struct hnae_handle *handle,
-				   u32 coalesce_frames);
+				   u32 tx_frames, u32 rx_frames);
 	void (*get_coalesce_range)(struct hnae_handle *handle,
 				   u32 *tx_frames_low, u32 *rx_frames_low,
 				   u32 *tx_frames_high, u32 *rx_frames_high,
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c b/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c
index f0142e5..ff864a1 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c
@@ -487,15 +487,21 @@ static void hns_ae_get_coalesce_usecs(struct hnae_handle *handle,
 					       ring_pair->port_id_in_comm);
 }
 
-static void hns_ae_get_rx_max_coalesced_frames(struct hnae_handle *handle,
-					       u32 *tx_frames, u32 *rx_frames)
+static void hns_ae_get_max_coalesced_frames(struct hnae_handle *handle,
+					    u32 *tx_frames, u32 *rx_frames)
 {
 	struct ring_pair_cb *ring_pair =
 		container_of(handle->qs[0], struct ring_pair_cb, q);
+	struct dsaf_device *dsaf_dev = hns_ae_get_dsaf_dev(handle->dev);
 
-	*tx_frames = hns_rcb_get_coalesced_frames(ring_pair->rcb_common,
-						  ring_pair->port_id_in_comm);
-	*rx_frames = hns_rcb_get_coalesced_frames(ring_pair->rcb_common,
+	if (AE_IS_VER1(dsaf_dev->dsaf_ver) ||
+	    handle->port_type == HNAE_PORT_DEBUG)
+		*tx_frames = hns_rcb_get_rx_coalesced_frames(
+			ring_pair->rcb_common, ring_pair->port_id_in_comm);
+	else
+		*tx_frames = hns_rcb_get_tx_coalesced_frames(
+			ring_pair->rcb_common, ring_pair->port_id_in_comm);
+	*rx_frames = hns_rcb_get_rx_coalesced_frames(ring_pair->rcb_common,
 						  ring_pair->port_id_in_comm);
 }
 
@@ -509,15 +515,34 @@ static int hns_ae_set_coalesce_usecs(struct hnae_handle *handle,
 		ring_pair->rcb_common, ring_pair->port_id_in_comm, timeout);
 }
 
-static int  hns_ae_set_coalesce_frames(struct hnae_handle *handle,
-				       u32 coalesce_frames)
+static int hns_ae_set_coalesce_frames(struct hnae_handle *handle,
+				      u32 tx_frames, u32 rx_frames)
 {
+	int ret;
 	struct ring_pair_cb *ring_pair =
 		container_of(handle->qs[0], struct ring_pair_cb, q);
+	struct dsaf_device *dsaf_dev = hns_ae_get_dsaf_dev(handle->dev);
 
-	return hns_rcb_set_coalesced_frames(
-		ring_pair->rcb_common,
-		ring_pair->port_id_in_comm, coalesce_frames);
+	if (AE_IS_VER1(dsaf_dev->dsaf_ver) ||
+	    handle->port_type == HNAE_PORT_DEBUG) {
+		if (tx_frames != rx_frames)
+			return -EINVAL;
+		return hns_rcb_set_rx_coalesced_frames(
+			ring_pair->rcb_common,
+			ring_pair->port_id_in_comm, rx_frames);
+	} else {
+		if (tx_frames != 1)
+			return -EINVAL;
+		ret = hns_rcb_set_tx_coalesced_frames(
+			ring_pair->rcb_common,
+			ring_pair->port_id_in_comm, tx_frames);
+		if (ret)
+			return ret;
+
+		return hns_rcb_set_rx_coalesced_frames(
+			ring_pair->rcb_common,
+			ring_pair->port_id_in_comm, rx_frames);
+	}
 }
 
 static void hns_ae_get_coalesce_range(struct hnae_handle *handle,
@@ -528,20 +553,27 @@ static void hns_ae_get_coalesce_range(struct hnae_handle *handle,
 {
 	struct dsaf_device *dsaf_dev;
 
+	assert(handle);
+
 	dsaf_dev = hns_ae_get_dsaf_dev(handle->dev);
 
-	*tx_frames_low  = HNS_RCB_MIN_COALESCED_FRAMES;
-	*rx_frames_low  = HNS_RCB_MIN_COALESCED_FRAMES;
-	*tx_frames_high =
-		(dsaf_dev->desc_num - 1 > HNS_RCB_MAX_COALESCED_FRAMES) ?
-		HNS_RCB_MAX_COALESCED_FRAMES : dsaf_dev->desc_num - 1;
-	*rx_frames_high =
-		(dsaf_dev->desc_num - 1 > HNS_RCB_MAX_COALESCED_FRAMES) ?
-		 HNS_RCB_MAX_COALESCED_FRAMES : dsaf_dev->desc_num - 1;
-	*tx_usecs_low   = 0;
-	*rx_usecs_low   = 0;
-	*tx_usecs_high  = HNS_RCB_MAX_COALESCED_USECS;
-	*rx_usecs_high  = HNS_RCB_MAX_COALESCED_USECS;
+	*tx_frames_low  = HNS_RCB_TX_FRAMES_LOW;
+	*rx_frames_low  = HNS_RCB_RX_FRAMES_LOW;
+
+	if (AE_IS_VER1(dsaf_dev->dsaf_ver) ||
+	    handle->port_type == HNAE_PORT_DEBUG)
+		*tx_frames_high =
+			(dsaf_dev->desc_num - 1 > HNS_RCB_TX_FRAMES_HIGH) ?
+			HNS_RCB_TX_FRAMES_HIGH : dsaf_dev->desc_num - 1;
+	else
+		*tx_frames_high = 1;
+
+	*rx_frames_high = (dsaf_dev->desc_num - 1 > HNS_RCB_RX_FRAMES_HIGH) ?
+		HNS_RCB_RX_FRAMES_HIGH : dsaf_dev->desc_num - 1;
+	*tx_usecs_low   = HNS_RCB_TX_USECS_LOW;
+	*rx_usecs_low   = HNS_RCB_RX_USECS_LOW;
+	*tx_usecs_high  = HNS_RCB_TX_USECS_HIGH;
+	*rx_usecs_high  = HNS_RCB_RX_USECS_HIGH;
 }
 
 void hns_ae_update_stats(struct hnae_handle *handle,
@@ -875,7 +907,7 @@ static struct hnae_ae_ops hns_dsaf_ops = {
 	.get_autoneg = hns_ae_get_autoneg,
 	.set_pauseparam = hns_ae_set_pauseparam,
 	.get_coalesce_usecs = hns_ae_get_coalesce_usecs,
-	.get_rx_max_coalesced_frames = hns_ae_get_rx_max_coalesced_frames,
+	.get_max_coalesced_frames = hns_ae_get_max_coalesced_frames,
 	.set_coalesce_usecs = hns_ae_set_coalesce_usecs,
 	.set_coalesce_frames = hns_ae_set_coalesce_frames,
 	.get_coalesce_range = hns_ae_get_coalesce_range,
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c
index a6ab168..9b66057 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c
@@ -254,7 +254,7 @@ static void hns_rcb_ring_init(struct ring_pair_cb *ring_pair, int ring_type)
 		dsaf_write_dev(q, RCB_RING_TX_RING_BD_NUM_REG,
 			       ring_pair->port_id_in_comm);
 		dsaf_write_dev(q, RCB_RING_TX_RING_PKTLINE_REG,
-			       ring_pair->port_id_in_comm);
+			ring_pair->port_id_in_comm + HNS_RCB_TX_PKTLINE_OFFSET);
 	}
 }
 
@@ -284,13 +284,27 @@ static void hns_rcb_set_port_desc_cnt(struct rcb_common_cb *rcb_common,
 static void hns_rcb_set_port_timeout(
 	struct rcb_common_cb *rcb_common, u32 port_idx, u32 timeout)
 {
-	if (AE_IS_VER1(rcb_common->dsaf_dev->dsaf_ver))
+	if (AE_IS_VER1(rcb_common->dsaf_dev->dsaf_ver)) {
 		dsaf_write_dev(rcb_common, RCB_CFG_OVERTIME_REG,
 			       timeout * HNS_RCB_CLK_FREQ_MHZ);
-	else
+	} else if (!HNS_DSAF_IS_DEBUG(rcb_common->dsaf_dev)) {
+		if (timeout > HNS_RCB_DEF_GAP_TIME_USECS)
+			dsaf_write_dev(rcb_common,
+				       RCB_PORT_INT_GAPTIME_REG + port_idx * 4,
+				       HNS_RCB_DEF_GAP_TIME_USECS);
+		else
+			dsaf_write_dev(rcb_common,
+				       RCB_PORT_INT_GAPTIME_REG + port_idx * 4,
+				       timeout);
+
 		dsaf_write_dev(rcb_common,
 			       RCB_PORT_CFG_OVERTIME_REG + port_idx * 4,
 			       timeout);
+	} else {
+		dsaf_write_dev(rcb_common,
+			       RCB_PORT_CFG_OVERTIME_REG + port_idx * 4,
+			       timeout);
+	}
 }
 
 static int hns_rcb_common_get_port_num(struct rcb_common_cb *rcb_common)
@@ -352,8 +366,12 @@ int hns_rcb_common_init_hw(struct rcb_common_cb *rcb_common)
 
 	for (i = 0; i < port_num; i++) {
 		hns_rcb_set_port_desc_cnt(rcb_common, i, rcb_common->desc_num);
-		(void)hns_rcb_set_coalesced_frames(
-			rcb_common, i, HNS_RCB_DEF_COALESCED_FRAMES);
+		hns_rcb_set_rx_coalesced_frames(
+			rcb_common, i, HNS_RCB_DEF_RX_COALESCED_FRAMES);
+		if (!AE_IS_VER1(rcb_common->dsaf_dev->dsaf_ver) &&
+		    !HNS_DSAF_IS_DEBUG(rcb_common->dsaf_dev))
+			hns_rcb_set_tx_coalesced_frames(
+				rcb_common, i, HNS_RCB_DEF_TX_COALESCED_FRAMES);
 		hns_rcb_set_port_timeout(
 			rcb_common, i, HNS_RCB_DEF_COALESCED_USECS);
 	}
@@ -507,19 +525,35 @@ void hns_rcb_get_cfg(struct rcb_common_cb *rcb_common)
 }
 
 /**
- *hns_rcb_get_coalesced_frames - get rcb port coalesced frames
+ *hns_rcb_get_rx_coalesced_frames - get rcb port rx coalesced frames
  *@rcb_common: rcb_common device
  *@port_idx:port id in comm
  *
  *Returns: coalesced_frames
  */
-u32 hns_rcb_get_coalesced_frames(
+u32 hns_rcb_get_rx_coalesced_frames(
 	struct rcb_common_cb *rcb_common, u32 port_idx)
 {
 	return dsaf_read_dev(rcb_common, RCB_CFG_PKTLINE_REG + port_idx * 4);
 }
 
 /**
+ *hns_rcb_get_tx_coalesced_frames - get rcb port tx coalesced frames
+ *@rcb_common: rcb_common device
+ *@port_idx:port id in comm
+ *
+ *Returns: coalesced_frames
+ */
+u32 hns_rcb_get_tx_coalesced_frames(
+	struct rcb_common_cb *rcb_common, u32 port_idx)
+{
+	u64 reg;
+
+	reg = RCB_CFG_PKTLINE_REG + (port_idx + HNS_RCB_TX_PKTLINE_OFFSET) * 4;
+	return dsaf_read_dev(rcb_common, reg);
+}
+
+/**
  *hns_rcb_get_coalesce_usecs - get rcb port coalesced time_out
  *@rcb_common: rcb_common device
  *@port_idx:port id in comm
@@ -561,33 +595,47 @@ int hns_rcb_set_coalesce_usecs(
 			return -EINVAL;
 		}
 	}
-	if (timeout > HNS_RCB_MAX_COALESCED_USECS) {
+	if (timeout > HNS_RCB_MAX_COALESCED_USECS || timeout == 0) {
 		dev_err(rcb_common->dsaf_dev->dev,
-			"error: coalesce_usecs setting supports 0~1023us\n");
+			"error: coalesce_usecs setting supports 1~1023us\n");
 		return -EINVAL;
 	}
+	hns_rcb_set_port_timeout(rcb_common, port_idx, timeout);
+	return 0;
+}
 
-	if (!AE_IS_VER1(rcb_common->dsaf_dev->dsaf_ver)) {
-		if (timeout == 0)
-			/* set timeout to 0, Disable gap time */
-			dsaf_set_reg_field(rcb_common->io_base,
-					   RCB_INT_GAP_TIME_REG + port_idx * 4,
-					   PPE_INT_GAPTIME_M, PPE_INT_GAPTIME_B,
-					   0);
-		else
-			/* set timeout non 0, restore gap time to 1 */
-			dsaf_set_reg_field(rcb_common->io_base,
-					   RCB_INT_GAP_TIME_REG + port_idx * 4,
-					   PPE_INT_GAPTIME_M, PPE_INT_GAPTIME_B,
-					   1);
+/**
+ *hns_rcb_set_tx_coalesced_frames - set rcb coalesced frames
+ *@rcb_common: rcb_common device
+ *@port_idx:port id in comm
+ *@coalesced_frames:tx/rx BD num for coalesced frames
+ *
+ * Returns:
+ * Zero for success, or an error code in case of failure
+ */
+int hns_rcb_set_tx_coalesced_frames(
+	struct rcb_common_cb *rcb_common, u32 port_idx, u32 coalesced_frames)
+{
+	u32 old_waterline =
+		hns_rcb_get_tx_coalesced_frames(rcb_common, port_idx);
+	u64 reg;
+
+	if (coalesced_frames == old_waterline)
+		return 0;
+
+	if (coalesced_frames != 1) {
+		dev_err(rcb_common->dsaf_dev->dev,
+			"error: not support tx coalesce_frames setting!\n");
+		return -EINVAL;
 	}
 
-	hns_rcb_set_port_timeout(rcb_common, port_idx, timeout);
+	reg = RCB_CFG_PKTLINE_REG + (port_idx + HNS_RCB_TX_PKTLINE_OFFSET) * 4;
+	dsaf_write_dev(rcb_common, reg,	coalesced_frames);
 	return 0;
 }
 
 /**
- *hns_rcb_set_coalesced_frames - set rcb coalesced frames
+ *hns_rcb_set_rx_coalesced_frames - set rcb rx coalesced frames
  *@rcb_common: rcb_common device
  *@port_idx:port id in comm
  *@coalesced_frames:tx/rx BD num for coalesced frames
@@ -595,10 +643,11 @@ int hns_rcb_set_coalesce_usecs(
  * Returns:
  * Zero for success, or an error code in case of failure
  */
-int hns_rcb_set_coalesced_frames(
+int hns_rcb_set_rx_coalesced_frames(
 	struct rcb_common_cb *rcb_common, u32 port_idx, u32 coalesced_frames)
 {
-	u32 old_waterline = hns_rcb_get_coalesced_frames(rcb_common, port_idx);
+	u32 old_waterline =
+		hns_rcb_get_rx_coalesced_frames(rcb_common, port_idx);
 
 	if (coalesced_frames == old_waterline)
 		return 0;
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h
index afe563c..a664ee8 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h
@@ -35,12 +35,23 @@ struct rcb_common_cb;
 
 #define HNS_RCB_REG_OFFSET			0x10000
 
+#define HNS_RCB_TX_FRAMES_LOW		1
+#define HNS_RCB_RX_FRAMES_LOW		1
+#define HNS_RCB_TX_FRAMES_HIGH		1023
+#define HNS_RCB_RX_FRAMES_HIGH		1023
+#define HNS_RCB_TX_USECS_LOW		1
+#define HNS_RCB_RX_USECS_LOW		1
+#define HNS_RCB_TX_USECS_HIGH		1023
+#define HNS_RCB_RX_USECS_HIGH		1023
 #define HNS_RCB_MAX_COALESCED_FRAMES		1023
 #define HNS_RCB_MIN_COALESCED_FRAMES		1
-#define HNS_RCB_DEF_COALESCED_FRAMES		50
+#define HNS_RCB_DEF_RX_COALESCED_FRAMES		50
+#define HNS_RCB_DEF_TX_COALESCED_FRAMES		1
 #define HNS_RCB_CLK_FREQ_MHZ			350
 #define HNS_RCB_MAX_COALESCED_USECS		0x3ff
-#define HNS_RCB_DEF_COALESCED_USECS		50
+#define HNS_RCB_DEF_COALESCED_USECS		30
+#define HNS_RCB_DEF_GAP_TIME_USECS		20
+#define HNS_RCB_TX_PKTLINE_OFFSET		8
 
 #define HNS_RCB_COMMON_ENDIAN			1
 
@@ -125,13 +136,17 @@ void hns_rcbv2_int_clr_hw(struct hnae_queue *q, u32 flag);
 void hns_rcb_init_hw(struct ring_pair_cb *ring);
 void hns_rcb_reset_ring_hw(struct hnae_queue *q);
 void hns_rcb_wait_fbd_clean(struct hnae_queue **qs, int q_num, u32 flag);
-u32 hns_rcb_get_coalesced_frames(
+u32 hns_rcb_get_rx_coalesced_frames(
+	struct rcb_common_cb *rcb_common, u32 port_idx);
+u32 hns_rcb_get_tx_coalesced_frames(
 	struct rcb_common_cb *rcb_common, u32 port_idx);
 u32 hns_rcb_get_coalesce_usecs(
 	struct rcb_common_cb *rcb_common, u32 port_idx);
 int hns_rcb_set_coalesce_usecs(
 	struct rcb_common_cb *rcb_common, u32 port_idx, u32 timeout);
-int hns_rcb_set_coalesced_frames(
+int hns_rcb_set_rx_coalesced_frames(
+	struct rcb_common_cb *rcb_common, u32 port_idx, u32 coalesced_frames);
+int hns_rcb_set_tx_coalesced_frames(
 	struct rcb_common_cb *rcb_common, u32 port_idx, u32 coalesced_frames);
 void hns_rcb_update_stats(struct hnae_queue *queue);
 
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h
index 4b8af68..46a52d9 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h
@@ -421,7 +421,7 @@
 #define RCB_CFG_OVERTIME_REG			0x9300
 #define RCB_CFG_PKTLINE_INT_NUM_REG		0x9304
 #define RCB_CFG_OVERTIME_INT_NUM_REG		0x9308
-#define RCB_INT_GAP_TIME_REG			0x9400
+#define RCB_PORT_INT_GAPTIME_REG		0x9400
 #define RCB_PORT_CFG_OVERTIME_REG		0x9430
 
 #define RCB_RING_RX_RING_BASEADDR_L_REG		0x00000
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
index 3a2a342..36f33bd 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
@@ -764,14 +764,14 @@ static int hns_get_coalesce(struct net_device *net_dev,
 	ec->use_adaptive_tx_coalesce = 1;
 
 	if ((!ops->get_coalesce_usecs) ||
-	    (!ops->get_rx_max_coalesced_frames))
+	    (!ops->get_max_coalesced_frames))
 		return -ESRCH;
 
 	ops->get_coalesce_usecs(priv->ae_handle,
 					&ec->tx_coalesce_usecs,
 					&ec->rx_coalesce_usecs);
 
-	ops->get_rx_max_coalesced_frames(
+	ops->get_max_coalesced_frames(
 		priv->ae_handle,
 		&ec->tx_max_coalesced_frames,
 		&ec->rx_max_coalesced_frames);
@@ -801,30 +801,28 @@ static int hns_set_coalesce(struct net_device *net_dev,
 {
 	struct hns_nic_priv *priv = netdev_priv(net_dev);
 	struct hnae_ae_ops *ops;
-	int ret;
+	int rc1, rc2;
 
 	ops = priv->ae_handle->dev->ops;
 
 	if (ec->tx_coalesce_usecs != ec->rx_coalesce_usecs)
 		return -EINVAL;
 
-	if (ec->rx_max_coalesced_frames != ec->tx_max_coalesced_frames)
-		return -EINVAL;
-
 	if ((!ops->set_coalesce_usecs) ||
 	    (!ops->set_coalesce_frames))
 		return -ESRCH;
 
-	ret = ops->set_coalesce_usecs(priv->ae_handle,
+	rc1 = ops->set_coalesce_usecs(priv->ae_handle,
 				      ec->rx_coalesce_usecs);
-	if (ret)
-		return ret;
 
-	ret = ops->set_coalesce_frames(
-		priv->ae_handle,
-		ec->rx_max_coalesced_frames);
+	rc2 = ops->set_coalesce_frames(priv->ae_handle,
+				       ec->tx_max_coalesced_frames,
+				       ec->rx_max_coalesced_frames);
 
-	return ret;
+	if (rc1 || rc2)
+		return -EINVAL;
+
+	return 0;
 }
 
 /**
-- 
2.7.4

[PATCH V4 net-next 18/18] net: hns: Some checkpatch.pl script & warning fixes

[Salil Mehta]

This patch fixes some checkpatch.pl script caught errors and
warnings during the compilation time.

Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
---
Change Log:
Patch V3: Adressed the comment by Joe Perches
          * Link ->  https://lkml.org/lkml/2017/3/31/538
---
 drivers/net/ethernet/hisilicon/hns/hnae.h          |  1 -
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c | 11 +++++------
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h |  2 +-
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c  |  1 -
 drivers/net/ethernet/hisilicon/hns/hns_enet.c      |  9 +++++----
 drivers/net/ethernet/hisilicon/hns/hns_ethtool.c   |  1 -
 6 files changed, 11 insertions(+), 14 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hnae.h b/drivers/net/ethernet/hisilicon/hns/hnae.h
index 0943138..04211ac 100644
--- a/drivers/net/ethernet/hisilicon/hns/hnae.h
+++ b/drivers/net/ethernet/hisilicon/hns/hnae.h
@@ -103,7 +103,6 @@ enum hnae_led_state {
 #define HNS_RX_FLAG_L4ID_TCP 0x1
 #define HNS_RX_FLAG_L4ID_SCTP 0x3
 
-
 #define HNS_TXD_ASID_S 0
 #define HNS_TXD_ASID_M (0xff << HNS_TXD_ASID_S)
 #define HNS_TXD_BUFNUM_S 8
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c
index 035db86..74bd260 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_gmac.c
@@ -86,12 +86,11 @@ static void hns_gmac_disable(void *mac_drv, enum mac_commom_mode mode)
 		dsaf_set_dev_bit(drv, GMAC_PORT_EN_REG, GMAC_PORT_RX_EN_B, 0);
 }
 
-/**
-*hns_gmac_get_en - get port enable
-*@mac_drv:mac device
-*@rx:rx enable
-*@tx:tx enable
-*/
+/* hns_gmac_get_en - get port enable
+ * @mac_drv:mac device
+ * @rx:rx enable
+ * @tx:tx enable
+ */
 static void hns_gmac_get_en(void *mac_drv, u32 *rx, u32 *tx)
 {
 	struct mac_driver *drv = (struct mac_driver *)mac_drv;
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
index 4db02e2..4507e82 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
@@ -68,7 +68,7 @@ enum dsaf_roce_qos_sl {
 };
 
 #define DSAF_STATS_READ(p, offset) (*((u64 *)((u8 *)(p) + (offset))))
-#define HNS_DSAF_IS_DEBUG(dev) (dev->dsaf_mode == DSAF_MODE_DISABLE_SP)
+#define HNS_DSAF_IS_DEBUG(dev) ((dev)->dsaf_mode == DSAF_MODE_DISABLE_SP)
 
 enum hal_dsaf_mode {
 	HRD_DSAF_NO_DSAF_MODE	= 0x0,
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c
index 9b66057..c20a0f4 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c
@@ -471,7 +471,6 @@ static void hns_rcb_ring_pair_get_cfg(struct ring_pair_cb *ring_pair_cb)
 static int hns_rcb_get_port_in_comm(
 	struct rcb_common_cb *rcb_common, int ring_idx)
 {
-
 	return ring_idx / (rcb_common->max_q_per_vf * rcb_common->max_vfn);
 }
 
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.c b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
index e39c794..c6700b9 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
@@ -512,7 +512,8 @@ static void hns_nic_reuse_page(struct sk_buff *skb, int i,
 	int last_offset;
 	bool twobufs;
 
-	twobufs = ((PAGE_SIZE < 8192) && hnae_buf_size(ring) == HNS_BUFFER_SIZE_2048);
+	twobufs = ((PAGE_SIZE < 8192) &&
+		hnae_buf_size(ring) == HNS_BUFFER_SIZE_2048);
 
 	desc = &ring->desc[ring->next_to_clean];
 	size = le16_to_cpu(desc->rx.size);
@@ -922,8 +923,8 @@ static int is_valid_clean_head(struct hnae_ring *ring, int h)
 
 /* netif_tx_lock will turn down the performance, set only when necessary */
 #ifdef CONFIG_NET_POLL_CONTROLLER
-#define NETIF_TX_LOCK(ring) spin_lock(&ring->lock)
-#define NETIF_TX_UNLOCK(ring) spin_unlock(&ring->lock)
+#define NETIF_TX_LOCK(ring) spin_lock(&(ring)->lock)
+#define NETIF_TX_UNLOCK(ring) spin_unlock(&(ring)->lock)
 #else
 #define NETIF_TX_LOCK(ring)
 #define NETIF_TX_UNLOCK(ring)
@@ -2012,7 +2013,7 @@ static void hns_nic_reset_subtask(struct hns_nic_priv *priv)
 static void hns_nic_service_event_complete(struct hns_nic_priv *priv)
 {
 	WARN_ON(!test_bit(NIC_STATE_SERVICE_SCHED, &priv->state));
-
+	/* make sure to commit the things */
 	smp_mb__before_atomic();
 	clear_bit(NIC_STATE_SERVICE_SCHED, &priv->state);
 }
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
index 36f33bd..b8fab14 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c
@@ -1242,7 +1242,6 @@ hns_set_rss(struct net_device *netdev, const u32 *indir, const u8 *key,
 {
 	struct hns_nic_priv *priv = netdev_priv(netdev);
 	struct hnae_ae_ops *ops;
-	int ret;
 
 	if (AE_IS_VER1(priv->enet_ver)) {
 		netdev_err(netdev,
-- 
2.7.4

Re: [PATCH V4 net-next 00/18] net: hns: Misc. HNS Bug Fixes & Code Improvements

[David Miller]

From: Salil Mehta <salil.mehta@huawei.com>
Date: Sat, 1 Apr 2017 12:03:30 +0100

> This patch set introduces various HNS bug fixes, optimizations and code
> improvements.

Series applied, thanks.