From: Yufeng Mo moyufeng@huawei.com
mainline inclusion from mainline-master commit a4ae2bc0abd4 category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I4M1HB CVE: NA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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Function hns3_get_tx_timeo_queue_info() is a bit too long. So add two new functions hns3_dump_queue_stats() and hns3_dump_queue_reg() to simplify code and improve code readability.
Signed-off-by: Yufeng Mo moyufeng@huawei.com Signed-off-by: Guangbin Huang huangguangbin2@huawei.com Signed-off-by: David S. Miller davem@davemloft.net Reviewed-by: Yongxin Li liyongxin1@huawei.com Signed-off-by: Junxin Chen chenjunxin1@huawei.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- .../net/ethernet/hisilicon/hns3/hns3_enet.c | 100 +++++++++--------- .../net/ethernet/hisilicon/hns3/hns3_enet.h | 5 + 2 files changed, 57 insertions(+), 48 deletions(-)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c index 6619bf4baa58..2151c206de9e 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c @@ -2658,18 +2658,8 @@ static int hns3_nic_change_mtu(struct net_device *netdev, int new_mtu) return ret; }
-static bool hns3_get_tx_timeo_queue_info(struct net_device *ndev) +static int hns3_get_timeout_queue(struct net_device *ndev) { - struct hns3_nic_priv *priv = netdev_priv(ndev); - struct hnae3_handle *h = hns3_get_handle(ndev); - struct hns3_enet_ring *tx_ring; - struct napi_struct *napi; - int timeout_queue = 0; - int hw_head, hw_tail; - int fbd_num, fbd_oft; - int ebd_num, ebd_oft; - int bd_num, bd_err; - int ring_en, tc; int i;
/* Find the stopped queue the same way the stack does */ @@ -2689,7 +2679,6 @@ static bool hns3_get_tx_timeo_queue_info(struct net_device *ndev) dql->last_obj_cnt, dql->num_queued, dql->adj_limit, dql->num_completed); #endif - timeout_queue = i; netdev_info(ndev, "queue state: 0x%lx, delta msecs: %u\n", q->state, jiffies_to_msecs(jiffies - trans_start)); @@ -2697,17 +2686,15 @@ static bool hns3_get_tx_timeo_queue_info(struct net_device *ndev) } }
- if (i == ndev->num_tx_queues) { - netdev_info(ndev, - "no netdev TX timeout queue found, timeout count: %llu\n", - priv->tx_timeout_count); - return false; - } - - priv->tx_timeout_count++; + return i; +}
- tx_ring = &priv->ring[timeout_queue]; - napi = &tx_ring->tqp_vector->napi; +static void hns3_dump_queue_stats(struct net_device *ndev, + struct hns3_enet_ring *tx_ring, + int timeout_queue) +{ + struct napi_struct *napi = &tx_ring->tqp_vector->napi; + struct hns3_nic_priv *priv = netdev_priv(ndev);
netdev_info(ndev, "tx_timeout count: %llu, queue id: %d, SW_NTU: 0x%x, SW_NTC: 0x%x, napi state: %lu\n", @@ -2723,6 +2710,48 @@ static bool hns3_get_tx_timeo_queue_info(struct net_device *ndev) "seg_pkt_cnt: %llu, tx_more: %llu, restart_queue: %llu, tx_busy: %llu\n", tx_ring->stats.seg_pkt_cnt, tx_ring->stats.tx_more, tx_ring->stats.restart_queue, tx_ring->stats.tx_busy); +} + +static void hns3_dump_queue_reg(struct net_device *ndev, + struct hns3_enet_ring *tx_ring) +{ + netdev_info(ndev, + "BD_NUM: 0x%x HW_HEAD: 0x%x, HW_TAIL: 0x%x, BD_ERR: 0x%x, INT: 0x%x\n", + hns3_tqp_read_reg(tx_ring, HNS3_RING_TX_RING_BD_NUM_REG), + hns3_tqp_read_reg(tx_ring, HNS3_RING_TX_RING_HEAD_REG), + hns3_tqp_read_reg(tx_ring, HNS3_RING_TX_RING_TAIL_REG), + hns3_tqp_read_reg(tx_ring, HNS3_RING_TX_RING_BD_ERR_REG), + readl(tx_ring->tqp_vector->mask_addr)); + netdev_info(ndev, + "RING_EN: 0x%x, TC: 0x%x, FBD_NUM: 0x%x FBD_OFT: 0x%x, EBD_NUM: 0x%x, EBD_OFT: 0x%x\n", + hns3_tqp_read_reg(tx_ring, HNS3_RING_EN_REG), + hns3_tqp_read_reg(tx_ring, HNS3_RING_TX_RING_TC_REG), + hns3_tqp_read_reg(tx_ring, HNS3_RING_TX_RING_FBDNUM_REG), + hns3_tqp_read_reg(tx_ring, HNS3_RING_TX_RING_OFFSET_REG), + hns3_tqp_read_reg(tx_ring, HNS3_RING_TX_RING_EBDNUM_REG), + hns3_tqp_read_reg(tx_ring, + HNS3_RING_TX_RING_EBD_OFFSET_REG)); +} + +static bool hns3_get_tx_timeo_queue_info(struct net_device *ndev) +{ + struct hns3_nic_priv *priv = netdev_priv(ndev); + struct hnae3_handle *h = hns3_get_handle(ndev); + struct hns3_enet_ring *tx_ring; + int timeout_queue; + + timeout_queue = hns3_get_timeout_queue(ndev); + if (timeout_queue >= ndev->num_tx_queues) { + netdev_info(ndev, + "no netdev TX timeout queue found, timeout count: %llu\n", + priv->tx_timeout_count); + return false; + } + + priv->tx_timeout_count++; + + tx_ring = &priv->ring[timeout_queue]; + hns3_dump_queue_stats(ndev, tx_ring, timeout_queue);
/* When mac received many pause frames continuous, it's unable to send * packets, which may cause tx timeout @@ -2735,32 +2764,7 @@ static bool hns3_get_tx_timeo_queue_info(struct net_device *ndev) mac_stats.tx_pause_cnt, mac_stats.rx_pause_cnt); }
- hw_head = readl_relaxed(tx_ring->tqp->io_base + - HNS3_RING_TX_RING_HEAD_REG); - hw_tail = readl_relaxed(tx_ring->tqp->io_base + - HNS3_RING_TX_RING_TAIL_REG); - fbd_num = readl_relaxed(tx_ring->tqp->io_base + - HNS3_RING_TX_RING_FBDNUM_REG); - fbd_oft = readl_relaxed(tx_ring->tqp->io_base + - HNS3_RING_TX_RING_OFFSET_REG); - ebd_num = readl_relaxed(tx_ring->tqp->io_base + - HNS3_RING_TX_RING_EBDNUM_REG); - ebd_oft = readl_relaxed(tx_ring->tqp->io_base + - HNS3_RING_TX_RING_EBD_OFFSET_REG); - bd_num = readl_relaxed(tx_ring->tqp->io_base + - HNS3_RING_TX_RING_BD_NUM_REG); - bd_err = readl_relaxed(tx_ring->tqp->io_base + - HNS3_RING_TX_RING_BD_ERR_REG); - ring_en = readl_relaxed(tx_ring->tqp->io_base + HNS3_RING_EN_REG); - tc = readl_relaxed(tx_ring->tqp->io_base + HNS3_RING_TX_RING_TC_REG); - - netdev_info(ndev, - "BD_NUM: 0x%x HW_HEAD: 0x%x, HW_TAIL: 0x%x, BD_ERR: 0x%x, INT: 0x%x\n", - bd_num, hw_head, hw_tail, bd_err, - readl(tx_ring->tqp_vector->mask_addr)); - netdev_info(ndev, - "RING_EN: 0x%x, TC: 0x%x, FBD_NUM: 0x%x FBD_OFT: 0x%x, EBD_NUM: 0x%x, EBD_OFT: 0x%x\n", - ring_en, tc, fbd_num, fbd_oft, ebd_num, ebd_oft); + hns3_dump_queue_reg(ndev, tx_ring);
return true; } diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h index 361a6390e159..808405cc0280 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.h @@ -621,6 +621,11 @@ static inline int ring_space(struct hns3_enet_ring *ring) (begin - end)) - 1; }
+static inline u32 hns3_tqp_read_reg(struct hns3_enet_ring *ring, u32 reg) +{ + return readl_relaxed(ring->tqp->io_base + reg); +} + static inline u32 hns3_read_reg(void __iomem *base, u32 reg) { return readl(base + reg);