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Subject[Patch net-next 07/12] net: hns3: remove hnae3_get_bit in data path
Date
From: Yunsheng Lin <linyunsheng@huawei.com>

The hnae3_get_bit uses hnae3_get_field, and hnae3_get_field
masks the data, which is unnecessary in data path.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
---
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 33 +++++++++++--------------
1 file changed, 14 insertions(+), 19 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index ce9878b..236b340 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -2318,13 +2318,12 @@ static void hns3_rx_checksum(struct hns3_enet_ring *ring, struct sk_buff *skb,
}

/* check if hardware has done checksum */
- if (!hnae3_get_bit(bd_base_info, HNS3_RXD_L3L4P_B))
+ if (!(bd_base_info & BIT(HNS3_RXD_L3L4P_B)))
return;

- if (unlikely(hnae3_get_bit(l234info, HNS3_RXD_L3E_B) ||
- hnae3_get_bit(l234info, HNS3_RXD_L4E_B) ||
- hnae3_get_bit(l234info, HNS3_RXD_OL3E_B) ||
- hnae3_get_bit(l234info, HNS3_RXD_OL4E_B))) {
+ if (unlikely(l234info & (BIT(HNS3_RXD_L3E_B) | BIT(HNS3_RXD_L4E_B) ||
+ BIT(HNS3_RXD_OL3E_B) ||
+ BIT(HNS3_RXD_OL4E_B)))) {
u64_stats_update_begin(&ring->syncp);
ring->stats.l3l4_csum_err++;
u64_stats_update_end(&ring->syncp);
@@ -2469,11 +2468,11 @@ static int hns3_add_frag(struct hns3_enet_ring *ring, struct hns3_desc *desc,
bd_base_info = le32_to_cpu(desc->rx.bd_base_info);
}

- while (!hnae3_get_bit(bd_base_info, HNS3_RXD_FE_B)) {
+ while (!(bd_base_info & BIT(HNS3_RXD_FE_B))) {
desc = &ring->desc[ring->next_to_clean];
desc_cb = &ring->desc_cb[ring->next_to_clean];
bd_base_info = le32_to_cpu(desc->rx.bd_base_info);
- if (!hnae3_get_bit(bd_base_info, HNS3_RXD_VLD_B))
+ if (!(bd_base_info & BIT(HNS3_RXD_VLD_B)))
return -ENXIO;

if (unlikely(ring->frag_num >= MAX_SKB_FRAGS)) {
@@ -2587,7 +2586,7 @@ static int hns3_handle_rx_bd(struct hns3_enet_ring *ring,
bd_base_info = le32_to_cpu(desc->rx.bd_base_info);

/* Check valid BD */
- if (unlikely(!hnae3_get_bit(bd_base_info, HNS3_RXD_VLD_B)))
+ if (unlikely(!(bd_base_info & BIT(HNS3_RXD_VLD_B))))
return -ENXIO;

if (!skb)
@@ -2650,7 +2649,7 @@ static int hns3_handle_rx_bd(struct hns3_enet_ring *ring,
vlan_tag);
}

- if (unlikely(!hnae3_get_bit(bd_base_info, HNS3_RXD_VLD_B))) {
+ if (unlikely(!(bd_base_info & BIT(HNS3_RXD_VLD_B)))) {
u64_stats_update_begin(&ring->syncp);
ring->stats.non_vld_descs++;
u64_stats_update_end(&ring->syncp);
@@ -2660,23 +2659,19 @@ static int hns3_handle_rx_bd(struct hns3_enet_ring *ring,
}

if (unlikely((!desc->rx.pkt_len) ||
- hnae3_get_bit(l234info, HNS3_RXD_TRUNCAT_B))) {
+ (l234info & (BIT(HNS3_RXD_TRUNCAT_B) |
+ BIT(HNS3_RXD_L2E_B))))) {
u64_stats_update_begin(&ring->syncp);
- ring->stats.err_pkt_len++;
+ if (l234info & BIT(HNS3_RXD_L2E_B))
+ ring->stats.l2_err++;
+ else
+ ring->stats.err_pkt_len++;
u64_stats_update_end(&ring->syncp);

dev_kfree_skb_any(skb);
return -EFAULT;
}

- if (unlikely(hnae3_get_bit(l234info, HNS3_RXD_L2E_B))) {
- u64_stats_update_begin(&ring->syncp);
- ring->stats.l2_err++;
- u64_stats_update_end(&ring->syncp);
-
- dev_kfree_skb_any(skb);
- return -EFAULT;
- }

l2_frame_type = hnae3_get_field(l234info, HNS3_RXD_DMAC_M,
HNS3_RXD_DMAC_S);
--
2.7.4
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