From 8d4b409bac5710cbf51c97c5d74e956476cd4de0 Mon Sep 17 00:00:00 2001 From: Yufeng Mo Date: Thu, 2 Dec 2021 16:35:59 +0800 Subject: net: hns3: split function hns3_nic_net_xmit() Function hns3_nic_net_xmit() is a bit too long. So add a new function hns3_handle_skb_desc() to simplify code and improve code readability. Signed-off-by: Yufeng Mo Signed-off-by: Guangbin Huang Signed-off-by: David S. Miller --- drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 47 +++++++++++++++---------- 1 file changed, 28 insertions(+), 19 deletions(-) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c index a6e12d81949e..8dcc2d80553b 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c @@ -1637,7 +1637,6 @@ static int hns3_fill_skb_desc(struct hns3_enet_ring *ring, struct hns3_desc_cb *desc_cb) { struct hns3_desc_param param; - u8 fd_op; int ret; hns3_init_desc_data(skb, ¶m); @@ -2185,15 +2184,39 @@ out: return hns3_fill_skb_to_desc(ring, skb, DESC_TYPE_SKB); } +static int hns3_handle_skb_desc(struct hns3_enet_ring *ring, + struct sk_buff *skb, + struct hns3_desc_cb *desc_cb, + int next_to_use_head) +{ + int ret; + + ret = hns3_fill_skb_desc(ring, skb, &ring->desc[ring->next_to_use], + desc_cb); + if (unlikely(ret < 0)) + goto fill_err; + + /* 'ret < 0' means filling error, 'ret == 0' means skb->len is + * zero, which is unlikely, and 'ret > 0' means how many tx desc + * need to be notified to the hw. + */ + ret = hns3_handle_desc_filling(ring, skb); + if (likely(ret > 0)) + return ret; + +fill_err: + hns3_clear_desc(ring, next_to_use_head); + return ret; +} + netdev_tx_t hns3_nic_net_xmit(struct sk_buff *skb, struct net_device *netdev) { struct hns3_nic_priv *priv = netdev_priv(netdev); struct hns3_enet_ring *ring = &priv->ring[skb->queue_mapping]; struct hns3_desc_cb *desc_cb = &ring->desc_cb[ring->next_to_use]; struct netdev_queue *dev_queue; - int pre_ntu, next_to_use_head; + int pre_ntu, ret; bool doorbell; - int ret; /* Hardware can only handle short frames above 32 bytes */ if (skb_put_padto(skb, HNS3_MIN_TX_LEN)) { @@ -2218,20 +2241,9 @@ netdev_tx_t hns3_nic_net_xmit(struct sk_buff *skb, struct net_device *netdev) goto out_err_tx_ok; } - next_to_use_head = ring->next_to_use; - - ret = hns3_fill_skb_desc(ring, skb, &ring->desc[ring->next_to_use], - desc_cb); - if (unlikely(ret < 0)) - goto fill_err; - - /* 'ret < 0' means filling error, 'ret == 0' means skb->len is - * zero, which is unlikely, and 'ret > 0' means how many tx desc - * need to be notified to the hw. - */ - ret = hns3_handle_desc_filling(ring, skb); + ret = hns3_handle_skb_desc(ring, skb, desc_cb, ring->next_to_use); if (unlikely(ret <= 0)) - goto fill_err; + goto out_err_tx_ok; pre_ntu = ring->next_to_use ? (ring->next_to_use - 1) : (ring->desc_num - 1); @@ -2253,9 +2265,6 @@ netdev_tx_t hns3_nic_net_xmit(struct sk_buff *skb, struct net_device *netdev) return NETDEV_TX_OK; -fill_err: - hns3_clear_desc(ring, next_to_use_head); - out_err_tx_ok: dev_kfree_skb_any(skb); hns3_tx_doorbell(ring, 0, !netdev_xmit_more()); -- cgit