Messages in this thread Patch in this message | | | From | Guangbin Huang <> | Subject | [PATCH net-next 1/4] net: hns3: refine the tcam key convert handle | Date | Tue, 27 Sep 2022 19:12:02 +0800 |
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From: Jian Shen <shenjian15@huawei.com>
The expression '(k ^ ~v)' is exaclty '(k & v)', and '(k & v) & k' is exaclty 'k & v'. So simplify the expression for tcam key convert.
It also add necessary brackets for them.
Signed-off-by: Jian Shen <shenjian15@huawei.com> Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com> --- .../net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h index 495b639b0dc2..59bfacc687c9 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h @@ -827,15 +827,10 @@ struct hclge_vf_vlan_cfg { * Then for input key(k) and mask(v), we can calculate the value by * the formulae: * x = (~k) & v - * y = (k ^ ~v) & k + * y = k & v */ -#define calc_x(x, k, v) (x = ~(k) & (v)) -#define calc_y(y, k, v) \ - do { \ - const typeof(k) _k_ = (k); \ - const typeof(v) _v_ = (v); \ - (y) = (_k_ ^ ~_v_) & (_k_); \ - } while (0) +#define calc_x(x, k, v) ((x) = ~(k) & (v)) +#define calc_y(y, k, v) ((y) = (k) & (v)) #define HCLGE_MAC_STATS_FIELD_OFF(f) (offsetof(struct hclge_mac_stats, f)) #define HCLGE_STATS_READ(p, offset) (*(u64 *)((u8 *)(p) + (offset))) -- 2.33.0
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