[PATCH 1/4] net-next/hinic:replace multiply and division operators

[PATCH 1/4] net-next/hinic:replace multiply and division operators

[Xue Chaojing]

To improve performance, this patch uses bit operations to replace
multiply and division operators.

Signed-off-by: Xue Chaojing <xuechaojing@huawei.com>
---
 .../net/ethernet/huawei/hinic/hinic_hw_wq.c   | 43 +++++++++++++------
 .../net/ethernet/huawei/hinic/hinic_hw_wq.h   |  3 +-
 2 files changed, 32 insertions(+), 14 deletions(-)

diff --git a/drivers/net/ethernet/huawei/hinic/hinic_hw_wq.c b/drivers/net/ethernet/huawei/hinic/hinic_hw_wq.c
index f92f1bf3901a..34859502c932 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_hw_wq.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_hw_wq.c
@@ -74,12 +74,6 @@
 			((void *)((cmdq_pages)->shadow_page_vaddr) \
 				+ (wq)->block_idx * CMDQ_BLOCK_SIZE)
 
-#define WQE_PAGE_OFF(wq, idx)   (((idx) & ((wq)->num_wqebbs_per_page - 1)) * \
-					(wq)->wqebb_size)
-
-#define WQE_PAGE_NUM(wq, idx)   (((idx) / ((wq)->num_wqebbs_per_page)) \
-					& ((wq)->num_q_pages - 1))
-
 #define WQ_PAGE_ADDR(wq, idx)           \
 			((wq)->shadow_block_vaddr[WQE_PAGE_NUM(wq, idx)])
 
@@ -93,6 +87,17 @@
 		(((unsigned long)(wqe) - (unsigned long)(wq)->shadow_wqe) \
 			/ (wq)->max_wqe_size)
 
+static inline int WQE_PAGE_OFF(struct hinic_wq *wq, u16 idx)
+{
+	return (((idx) & ((wq)->num_wqebbs_per_page - 1))
+		<< (wq)->wqebb_size_shift);
+}
+
+static inline int WQE_PAGE_NUM(struct hinic_wq *wq, u16 idx)
+{
+	return (((idx) >> ((wq)->wqebbs_per_page_shift))
+		& ((wq)->num_q_pages - 1));
+}
 /**
  * queue_alloc_page - allocate page for Queue
  * @hwif: HW interface for allocating DMA
@@ -513,6 +518,7 @@ int hinic_wq_allocate(struct hinic_wqs *wqs, struct hinic_wq *wq,
 	struct hinic_hwif *hwif = wqs->hwif;
 	struct pci_dev *pdev = hwif->pdev;
 	u16 num_wqebbs_per_page;
+	u16 wqebb_size_shift;
 	int err;
 
 	if (wqebb_size == 0) {
@@ -530,7 +536,9 @@ int hinic_wq_allocate(struct hinic_wqs *wqs, struct hinic_wq *wq,
 		return -EINVAL;
 	}
 
-	num_wqebbs_per_page = ALIGN(wq_page_size, wqebb_size) / wqebb_size;
+	wqebb_size_shift = ilog2(wqebb_size);
+	num_wqebbs_per_page = ALIGN(wq_page_size, wqebb_size)
+				>> wqebb_size_shift;
 
 	if (num_wqebbs_per_page & (num_wqebbs_per_page - 1)) {
 		dev_err(&pdev->dev, "num wqebbs per page must be power of 2\n");
@@ -550,7 +558,8 @@ int hinic_wq_allocate(struct hinic_wqs *wqs, struct hinic_wq *wq,
 	wq->q_depth = q_depth;
 	wq->max_wqe_size = max_wqe_size;
 	wq->num_wqebbs_per_page = num_wqebbs_per_page;
-
+	wq->wqebbs_per_page_shift = ilog2(num_wqebbs_per_page);
+	wq->wqebb_size_shift = wqebb_size_shift;
 	wq->block_vaddr = WQ_BASE_VADDR(wqs, wq);
 	wq->shadow_block_vaddr = WQ_BASE_ADDR(wqs, wq);
 	wq->block_paddr = WQ_BASE_PADDR(wqs, wq);
@@ -604,7 +613,9 @@ int hinic_wqs_cmdq_alloc(struct hinic_cmdq_pages *cmdq_pages,
 			 u16 q_depth, u16 max_wqe_size)
 {
 	struct pci_dev *pdev = hwif->pdev;
+	u16 num_wqebbs_per_page_shift;
 	u16 num_wqebbs_per_page;
+	u16 wqebb_size_shift;
 	int i, j, err = -ENOMEM;
 
 	if (wqebb_size == 0) {
@@ -622,7 +633,9 @@ int hinic_wqs_cmdq_alloc(struct hinic_cmdq_pages *cmdq_pages,
 		return -EINVAL;
 	}
 
-	num_wqebbs_per_page = ALIGN(wq_page_size, wqebb_size) / wqebb_size;
+	wqebb_size_shift = ilog2(wqebb_size);
+	num_wqebbs_per_page = ALIGN(wq_page_size, wqebb_size)
+				>> wqebb_size_shift;
 
 	if (num_wqebbs_per_page & (num_wqebbs_per_page - 1)) {
 		dev_err(&pdev->dev, "num wqebbs per page must be power of 2\n");
@@ -636,6 +649,7 @@ int hinic_wqs_cmdq_alloc(struct hinic_cmdq_pages *cmdq_pages,
 		dev_err(&pdev->dev, "Failed to allocate CMDQ page\n");
 		return err;
 	}
+	num_wqebbs_per_page_shift = ilog2(num_wqebbs_per_page);
 
 	for (i = 0; i < cmdq_blocks; i++) {
 		wq[i].hwif = hwif;
@@ -647,7 +661,8 @@ int hinic_wqs_cmdq_alloc(struct hinic_cmdq_pages *cmdq_pages,
 		wq[i].q_depth = q_depth;
 		wq[i].max_wqe_size = max_wqe_size;
 		wq[i].num_wqebbs_per_page = num_wqebbs_per_page;
-
+		wq[i].wqebbs_per_page_shift = num_wqebbs_per_page_shift;
+		wq[i].wqebb_size_shift = wqebb_size_shift;
 		wq[i].block_vaddr = CMDQ_BASE_VADDR(cmdq_pages, &wq[i]);
 		wq[i].shadow_block_vaddr = CMDQ_BASE_ADDR(cmdq_pages, &wq[i]);
 		wq[i].block_paddr = CMDQ_BASE_PADDR(cmdq_pages, &wq[i]);
@@ -741,7 +756,7 @@ struct hinic_hw_wqe *hinic_get_wqe(struct hinic_wq *wq, unsigned int wqe_size,
 
 	*prod_idx = MASKED_WQE_IDX(wq, atomic_read(&wq->prod_idx));
 
-	num_wqebbs = ALIGN(wqe_size, wq->wqebb_size) / wq->wqebb_size;
+	num_wqebbs = ALIGN(wqe_size, wq->wqebb_size) >> wq->wqebb_size_shift;
 
 	if (atomic_sub_return(num_wqebbs, &wq->delta) <= 0) {
 		atomic_add(num_wqebbs, &wq->delta);
@@ -795,7 +810,8 @@ void hinic_return_wqe(struct hinic_wq *wq, unsigned int wqe_size)
  **/
 void hinic_put_wqe(struct hinic_wq *wq, unsigned int wqe_size)
 {
-	int num_wqebbs = ALIGN(wqe_size, wq->wqebb_size) / wq->wqebb_size;
+	int num_wqebbs = ALIGN(wqe_size, wq->wqebb_size)
+			>> wq->wqebb_size_shift;
 
 	atomic_add(num_wqebbs, &wq->cons_idx);
 
@@ -813,7 +829,8 @@ void hinic_put_wqe(struct hinic_wq *wq, unsigned int wqe_size)
 struct hinic_hw_wqe *hinic_read_wqe(struct hinic_wq *wq, unsigned int wqe_size,
 				    u16 *cons_idx)
 {
-	int num_wqebbs = ALIGN(wqe_size, wq->wqebb_size) / wq->wqebb_size;
+	int num_wqebbs = ALIGN(wqe_size, wq->wqebb_size)
+			>> wq->wqebb_size_shift;
 	u16 curr_cons_idx, end_cons_idx;
 	int curr_pg, end_pg;
 
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_hw_wq.h b/drivers/net/ethernet/huawei/hinic/hinic_hw_wq.h
index 9b66545ba563..0a936cd6709b 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_hw_wq.h
+++ b/drivers/net/ethernet/huawei/hinic/hinic_hw_wq.h
@@ -39,7 +39,8 @@ struct hinic_wq {
 	u16             q_depth;
 	u16             max_wqe_size;
 	u16             num_wqebbs_per_page;
-
+	u16		wqebbs_per_page_shift;
+	u16		wqebb_size_shift;
 	/* The addresses are 64 bit in the HW */
 	u64             block_paddr;
 	void            **shadow_block_vaddr;
-- 
2.17.1

[PATCH 2/4] net-next/hinic:add rx checksum offload for HiNIC

[Xue Chaojing]

In order to improve performance, this patch adds rx checksum offload
for the HiNIC driver. Performance test(Iperf) shows more than 80%
improvement in TCP streams.

Signed-off-by: Xue Chaojing <xuechaojing@huawei.com>
---
 .../net/ethernet/huawei/hinic/hinic_hw_dev.h  |  2 ++
 .../net/ethernet/huawei/hinic/hinic_hw_wqe.h  |  4 +++
 .../net/ethernet/huawei/hinic/hinic_main.c    |  8 +++++-
 .../net/ethernet/huawei/hinic/hinic_port.c    | 28 +++++++++++++++++++
 .../net/ethernet/huawei/hinic/hinic_port.h    | 10 +++++++
 drivers/net/ethernet/huawei/hinic/hinic_rx.c  | 24 ++++++++++++++++
 drivers/net/ethernet/huawei/hinic/hinic_rx.h  |  4 +++
 7 files changed, 79 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.h b/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.h
index 097b5502603f..d1a7d2522d82 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.h
+++ b/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.h
@@ -50,6 +50,8 @@ enum hinic_port_cmd {
 
 	HINIC_PORT_CMD_GET_LINK_STATE   = 24,
 
+	HINIC_PORT_CMD_SET_RX_CSUM	= 26,
+
 	HINIC_PORT_CMD_SET_PORT_STATE   = 41,
 
 	HINIC_PORT_CMD_FWCTXT_INIT      = 69,
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_hw_wqe.h b/drivers/net/ethernet/huawei/hinic/hinic_hw_wqe.h
index 9754d6ed5f4a..138941527872 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_hw_wqe.h
+++ b/drivers/net/ethernet/huawei/hinic/hinic_hw_wqe.h
@@ -170,6 +170,10 @@
 
 #define HINIC_RQ_CQE_STATUS_RXDONE_MASK         0x1
 
+#define HINIC_RQ_CQE_STATUS_CSUM_ERR_SHIFT	0
+
+#define HINIC_RQ_CQE_STATUS_CSUM_ERR_MASK	0xFFFFU
+
 #define HINIC_RQ_CQE_STATUS_GET(val, member)    \
 		(((val) >> HINIC_RQ_CQE_STATUS_##member##_SHIFT) & \
 		 HINIC_RQ_CQE_STATUS_##member##_MASK)
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_main.c b/drivers/net/ethernet/huawei/hinic/hinic_main.c
index fdf2bdb6b0d0..0179b6bf124c 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_main.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_main.c
@@ -726,6 +726,7 @@ static void set_rx_mode(struct work_struct *work)
 {
 	struct hinic_rx_mode_work *rx_mode_work = work_to_rx_mode_work(work);
 	struct hinic_dev *nic_dev = rx_mode_work_to_nic_dev(rx_mode_work);
+	struct netdev_hw_addr *ha;
 
 	netif_info(nic_dev, drv, nic_dev->netdev, "set rx mode work\n");
 
@@ -806,7 +807,8 @@ static const struct net_device_ops hinic_netdev_ops = {
 static void netdev_features_init(struct net_device *netdev)
 {
 	netdev->hw_features = NETIF_F_SG | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM |
-			      NETIF_F_IPV6_CSUM | NETIF_F_TSO | NETIF_F_TSO6;
+			      NETIF_F_IPV6_CSUM | NETIF_F_TSO | NETIF_F_TSO6 |
+			      NETIF_F_RXCSUM;
 
 	netdev->vlan_features = netdev->hw_features;
 
@@ -869,12 +871,16 @@ static int set_features(struct hinic_dev *nic_dev,
 			netdev_features_t features, bool force_change)
 {
 	netdev_features_t changed = force_change ? ~0 : pre_features ^ features;
+	u32 csum_en = HINIC_RX_CSUM_OFFLOAD_EN;
 	int err = 0;
 
 	if (changed & NETIF_F_TSO)
 		err = hinic_port_set_tso(nic_dev, (features & NETIF_F_TSO) ?
 					 HINIC_TSO_ENABLE : HINIC_TSO_DISABLE);
 
+	if (changed & NETIF_F_RXCSUM)
+		err = hinic_set_rx_csum_offload(nic_dev, csum_en);
+
 	return err;
 }
 
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_port.c b/drivers/net/ethernet/huawei/hinic/hinic_port.c
index 7575a7d3bd9f..e9f76e904610 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_port.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_port.c
@@ -409,3 +409,31 @@ int hinic_port_set_tso(struct hinic_dev *nic_dev, enum hinic_tso_state state)
 
 	return 0;
 }
+
+int hinic_set_rx_csum_offload(struct hinic_dev *nic_dev, u32 en)
+{
+	struct hinic_checksum_offload rx_csum_cfg = {0};
+	struct hinic_hwdev *hwdev = nic_dev->hwdev;
+	struct hinic_hwif *hwif = hwdev->hwif;
+	struct pci_dev *pdev = hwif->pdev;
+	u16 out_size;
+	int err;
+
+	if (!hwdev)
+		return -EINVAL;
+
+	rx_csum_cfg.func_id = HINIC_HWIF_FUNC_IDX(hwif);
+	rx_csum_cfg.rx_csum_offload = en;
+
+	err = hinic_port_msg_cmd(hwdev, HINIC_PORT_CMD_SET_RX_CSUM,
+				 &rx_csum_cfg, sizeof(rx_csum_cfg),
+				 &rx_csum_cfg, &out_size);
+	if (err || !out_size || rx_csum_cfg.status) {
+		dev_err(&pdev->dev,
+			"Failed to set rx csum offload, ret = %d\n",
+			rx_csum_cfg.status);
+		return -EINVAL;
+	}
+
+	return 0;
+}
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_port.h b/drivers/net/ethernet/huawei/hinic/hinic_port.h
index f6e3220fe28f..02d896eed455 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_port.h
+++ b/drivers/net/ethernet/huawei/hinic/hinic_port.h
@@ -183,6 +183,15 @@ struct hinic_tso_config {
 	u8	resv2[3];
 };
 
+struct hinic_checksum_offload {
+	u8	status;
+	u8	version;
+	u8	rsvd0[6];
+
+	u16	func_id;
+	u16	rsvd1;
+	u32	rx_csum_offload;
+};
 int hinic_port_add_mac(struct hinic_dev *nic_dev, const u8 *addr,
 		       u16 vlan_id);
 
@@ -213,4 +222,5 @@ int hinic_port_get_cap(struct hinic_dev *nic_dev,
 
 int hinic_port_set_tso(struct hinic_dev *nic_dev, enum hinic_tso_state state);
 
+int hinic_set_rx_csum_offload(struct hinic_dev *nic_dev, u32 en);
 #endif
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_rx.c b/drivers/net/ethernet/huawei/hinic/hinic_rx.c
index 4c0f7eda1166..93e8f207f6da 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_rx.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_rx.c
@@ -89,6 +89,28 @@ static void rxq_stats_init(struct hinic_rxq *rxq)
 	hinic_rxq_clean_stats(rxq);
 }
 
+static void rx_csum(struct hinic_rxq *rxq, u16 cons_idx,
+		    struct sk_buff *skb)
+{
+	struct net_device *netdev = rxq->netdev;
+	struct hinic_rq_cqe *cqe;
+	struct hinic_rq *rq;
+	u32 csum_err;
+	u32 status;
+
+	rq = rxq->rq;
+	cqe = rq->cqe[cons_idx];
+	status = be32_to_cpu(cqe->status);
+	csum_err = HINIC_RQ_CQE_STATUS_GET(status, CSUM_ERR);
+
+	if (!(netdev->features & NETIF_F_RXCSUM))
+		return;
+
+	if (!csum_err)
+		skb->ip_summed = CHECKSUM_UNNECESSARY;
+	else
+		skb->ip_summed = CHECKSUM_NONE;
+}
 /**
  * rx_alloc_skb - allocate skb and map it to dma address
  * @rxq: rx queue
@@ -328,6 +350,8 @@ static int rxq_recv(struct hinic_rxq *rxq, int budget)
 
 		rx_unmap_skb(rxq, hinic_sge_to_dma(&sge));
 
+		rx_csum(rxq, ci, skb);
+
 		prefetch(skb->data);
 
 		pkt_len = sge.len;
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_rx.h b/drivers/net/ethernet/huawei/hinic/hinic_rx.h
index 27c9af4b1c12..ab3fabab91b2 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_rx.h
+++ b/drivers/net/ethernet/huawei/hinic/hinic_rx.h
@@ -23,6 +23,10 @@
 
 #include "hinic_hw_qp.h"
 
+#define HINIC_RX_CSUM_OFFLOAD_EN	0xFFF
+#define HINIC_RX_CSUM_HW_CHECK_NONE	BIT(7)
+#define HINIC_RX_CSUM_IPSU_OTHER_ERR	BIT(8)
+
 struct hinic_rxq_stats {
 	u64                     pkts;
 	u64                     bytes;
-- 
2.17.1

[PATCH 3/4] net-next/hinic:fix a bug in set mac address

[Xue Chaojing]

In add_mac_addr(), if the MAC address is a muliticast address,
it will not be set, which causes the network card fail to receive
the multicast packet. This patch fixes this bug.

Signed-off-by: Xue Chaojing <xuechaojing@huawei.com>
---
 drivers/net/ethernet/huawei/hinic/hinic_main.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/huawei/hinic/hinic_main.c b/drivers/net/ethernet/huawei/hinic/hinic_main.c
index 0179b6bf124c..6d48dc62a44b 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_main.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_main.c
@@ -600,9 +600,6 @@ static int add_mac_addr(struct net_device *netdev, const u8 *addr)
 	u16 vid = 0;
 	int err;
 
-	if (!is_valid_ether_addr(addr))
-		return -EADDRNOTAVAIL;
-
 	netif_info(nic_dev, drv, netdev, "set mac addr = %02x %02x %02x %02x %02x %02x\n",
 		   addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
 
@@ -734,6 +731,9 @@ static void set_rx_mode(struct work_struct *work)
 
 	__dev_uc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
 	__dev_mc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
+
+	netdev_for_each_mc_addr(ha, nic_dev->netdev)
+		add_mac_addr(nic_dev->netdev, ha->addr);
 }
 
 static void hinic_set_rx_mode(struct net_device *netdev)
-- 
2.17.1

[PATCH 4/4] net-next/hinic: fix a bug in rx data flow

[Xue Chaojing]

In rx_alloc_pkts(), there is a loop call of tasklet, which causes
100% cpu utilization, even no packets are being received. This patch
fixes this bug.

Signed-off-by: Xue Chaojing <xuechaojing@huawei.com>
---
 drivers/net/ethernet/huawei/hinic/hinic_rx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/huawei/hinic/hinic_rx.c b/drivers/net/ethernet/huawei/hinic/hinic_rx.c
index 93e8f207f6da..f86f2e693224 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_rx.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_rx.c
@@ -229,9 +229,9 @@ static int rx_alloc_pkts(struct hinic_rxq *rxq)
 		wmb();  /* write all the wqes before update PI */
 
 		hinic_rq_update(rxq->rq, prod_idx);
+		tasklet_schedule(&rxq->rx_task);
 	}
 
-	tasklet_schedule(&rxq->rx_task);
 	return i;
 }
 
-- 
2.17.1

Re: [PATCH 1/4] net-next/hinic:replace multiply and division operators

[David Miller]

From: Xue Chaojing <xuechaojing@huawei.com>
Date: Mon, 19 Nov 2018 06:12:31 +0000

> @@ -530,7 +536,9 @@ int hinic_wq_allocate(struct hinic_wqs *wqs, struct hinic_wq *wq,
>  		return -EINVAL;
>  	}
>  
> -	num_wqebbs_per_page = ALIGN(wq_page_size, wqebb_size) / wqebb_size;
> +	wqebb_size_shift = ilog2(wqebb_size);

You now have introduced the assumption that these various sizes are a power
of two.

You should check for this, either at compile time or at run time, in
order to avoid surprises and hard to debug issues in the future.

Thank you.

答复: [PATCH 1/4] net-next/hinic:replace multiply and division operators

[xuechaojing]

Hi:

This wqebb size is 32 in rx and in tx is 64, so the value is a power of two.

Thank you

-----邮件原件-----
发件人: David Miller [mailto:davem@davemloft.net] 
发送时间: 2018年11月20日 7:02
收件人: xuechaojing <xuechaojing@huawei.com>
抄送: linux-kernel@vger.kernel.org; netdev@vger.kernel.org; wulike (A) <wulike1@huawei.com>; chiqijun <chiqijun@huawei.com>; Wangfengying <fy.wang@huawei.com>; Quhuichun (Tony) <tony.qu@huawei.com>; Luoshaokai (luoshaokai) <luoshaokai@huawei.com>
主题: Re: [PATCH 1/4] net-next/hinic:replace multiply and division operators

From: Xue Chaojing <xuechaojing@huawei.com>
Date: Mon, 19 Nov 2018 06:12:31 +0000

> @@ -530,7 +536,9 @@ int hinic_wq_allocate(struct hinic_wqs *wqs, struct hinic_wq *wq,
>  		return -EINVAL;
>  	}
>  
> -	num_wqebbs_per_page = ALIGN(wq_page_size, wqebb_size) / wqebb_size;
> +	wqebb_size_shift = ilog2(wqebb_size);

You now have introduced the assumption that these various sizes are a power of two.

You should check for this, either at compile time or at run time, in order to avoid surprises and hard to debug issues in the future.

Thank you.

Re: 答复: [PATCH 1/4] net-next/hinic:replace multiply and division operators

[David Miller]

From: xuechaojing <xuechaojing@huawei.com>
Date: Tue, 20 Nov 2018 02:21:31 +0000

> This wqebb size is 32 in rx and in tx is 64, so the value is a power
> of two.

You know this.

I know this.

But developer in the future may not and try to use non-power-of-2.

Please add the necessary checks.  I will not ask another time.

Re: [PATCH 3/4] net-next/hinic:fix a bug in set mac address

[David Miller]

From: Xue Chaojing <xuechaojing@huawei.com>
Date: Tue, 20 Nov 2018 05:47:33 +0000

> In add_mac_addr(), if the MAC address is a muliticast address,
> it will not be set, which causes the network card fail to receive
> the multicast packet. This patch fixes this bug.
> 
> Signed-off-by: Xue Chaojing <xuechaojing@huawei.com>

Applied.

[PATCH 3/4] net-next/hinic:fix a bug in set mac address

[Xue Chaojing]

In add_mac_addr(), if the MAC address is a muliticast address,
it will not be set, which causes the network card fail to receive
the multicast packet. This patch fixes this bug.

Signed-off-by: Xue Chaojing <xuechaojing@huawei.com>
---
 drivers/net/ethernet/huawei/hinic/hinic_main.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/huawei/hinic/hinic_main.c b/drivers/net/ethernet/huawei/hinic/hinic_main.c
index c675077f9774..6d48dc62a44b 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_main.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_main.c
@@ -600,9 +600,6 @@ static int add_mac_addr(struct net_device *netdev, const u8 *addr)
 	u16 vid = 0;
 	int err;
 
-	if (!is_valid_ether_addr(addr))
-		return -EADDRNOTAVAIL;
-
 	netif_info(nic_dev, drv, netdev, "set mac addr = %02x %02x %02x %02x %02x %02x\n",
 		   addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
 
@@ -726,6 +723,7 @@ static void set_rx_mode(struct work_struct *work)
 {
 	struct hinic_rx_mode_work *rx_mode_work = work_to_rx_mode_work(work);
 	struct hinic_dev *nic_dev = rx_mode_work_to_nic_dev(rx_mode_work);
+	struct netdev_hw_addr *ha;
 
 	netif_info(nic_dev, drv, nic_dev->netdev, "set rx mode work\n");
 
@@ -733,6 +731,9 @@ static void set_rx_mode(struct work_struct *work)
 
 	__dev_uc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
 	__dev_mc_sync(nic_dev->netdev, add_mac_addr, remove_mac_addr);
+
+	netdev_for_each_mc_addr(ha, nic_dev->netdev)
+		add_mac_addr(nic_dev->netdev, ha->addr);
 }
 
 static void hinic_set_rx_mode(struct net_device *netdev)
-- 
2.17.1