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net: hns3: remove the shaper param magic number 

To make the code more readable, this patch adds a definition for
the magic number 126 used for the default shaper param ir_b, and
rename macro DIVISOR_IR_B_126.

No functional change.

Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Peng Li 2021-02-09 10:41:53 +08:00 коммит произвёл David S. Miller
Родитель ae9e492a36
Коммит 9d2a1cea69
1 изменённых файлов: 8 добавлений и 6 удалений
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14
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c
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@ -41,8 +41,9 @@ static int hclge_shaper_para_calc(u32 ir, u8 shaper_level,
struct hclge_shaper_ir_para *ir_para,
u32 max_tm_rate)
{
#define DEFAULT_SHAPER_IR_B 126
#define DIVISOR_CLK (1000 * 8)
#define DIVISOR_IR_B_126 (126 * DIVISOR_CLK)
#define DEFAULT_DIVISOR_IR_B (DEFAULT_SHAPER_IR_B * DIVISOR_CLK)
static const u16 tick_array[HCLGE_SHAPER_LVL_CNT] = {
6 * 256, /* Prioriy level */
@ -69,10 +70,10 @@ static int hclge_shaper_para_calc(u32 ir, u8 shaper_level,
* ir_calc = ---------------- * 1000
* tick * 1
*/
ir_calc = (DIVISOR_IR_B_126 + (tick >> 1) - 1) / tick;
ir_calc = (DEFAULT_DIVISOR_IR_B + (tick >> 1) - 1) / tick;
if (ir_calc == ir) {
ir_para->ir_b = 126;
ir_para->ir_b = DEFAULT_SHAPER_IR_B;
ir_para->ir_u = 0;
ir_para->ir_s = 0;
@ -81,7 +82,8 @@ static int hclge_shaper_para_calc(u32 ir, u8 shaper_level,
/* Increasing the denominator to select ir_s value */
while (ir_calc >= ir && ir) {
ir_s_calc++;
ir_calc = DIVISOR_IR_B_126 / (tick * (1 << ir_s_calc));
ir_calc = DEFAULT_DIVISOR_IR_B /
(tick * (1 << ir_s_calc));
}
ir_para->ir_b = (ir * tick * (1 << ir_s_calc) +
@ -92,12 +94,12 @@ static int hclge_shaper_para_calc(u32 ir, u8 shaper_level,
while (ir_calc < ir) {
ir_u_calc++;
numerator = DIVISOR_IR_B_126 * (1 << ir_u_calc);
numerator = DEFAULT_DIVISOR_IR_B * (1 << ir_u_calc);
ir_calc = (numerator + (tick >> 1)) / tick;
}
if (ir_calc == ir) {
ir_para->ir_b = 126;
ir_para->ir_b = DEFAULT_SHAPER_IR_B;
} else {
u32 denominator = DIVISOR_CLK * (1 << --ir_u_calc);
ir_para->ir_b = (ir * tick + (denominator >> 1)) /