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net: hns3: change GL update rate 

The interrupt coalescing self-adaptive function updates the int_gl every
interrupt. The GL update rate is too faster to get a better new GL value.
This patch changes the GL update rate to every one hundred interrupts.
The GL update rate is defined by HNS3_INT_ADAPT_DOWN_START.

Signed-off-by: Fuyun Liang <liangfuyun1@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Fuyun Liang 2018-03-21 15:49:25 +08:00 committed by David S. Miller
parent d458c815e7
commit cd9d187b07
2 changed files with 10 additions and 0 deletions
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8
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
View File

@ -214,6 +214,7 @@ static void hns3_vector_gl_rl_init(struct hns3_enet_tqp_vector *tqp_vector,
/* Default: disable RL */
h->kinfo.int_rl_setting = 0;
tqp_vector->int_adapt_down = HNS3_INT_ADAPT_DOWN_START;
tqp_vector->rx_group.coal.flow_level = HNS3_FLOW_LOW;
tqp_vector->tx_group.coal.flow_level = HNS3_FLOW_LOW;
}
@ -2492,6 +2493,11 @@ static void hns3_update_new_int_gl(struct hns3_enet_tqp_vector *tqp_vector)
struct hns3_enet_ring_group *tx_group = &tqp_vector->tx_group;
bool rx_update, tx_update;
if (tqp_vector->int_adapt_down > 0) {
tqp_vector->int_adapt_down--;
return;
}
if (rx_group->coal.gl_adapt_enable) {
rx_update = hns3_get_new_int_gl(rx_group);
if (rx_update)
@ -2505,6 +2511,8 @@ static void hns3_update_new_int_gl(struct hns3_enet_tqp_vector *tqp_vector)
hns3_set_vector_coalesce_tx_gl(tqp_vector,
tx_group->coal.int_gl);
}
tqp_vector->int_adapt_down = HNS3_INT_ADAPT_DOWN_START;
}
static int hns3_nic_common_poll(struct napi_struct *napi, int budget)

2
drivers/net/ethernet/hisilicon/hns3/hns3_enet.h
View File

@ -462,6 +462,8 @@ enum hns3_link_mode_bits {
#define HNS3_INT_RL_MAX 0x00EC
#define HNS3_INT_RL_ENABLE_MASK 0x40
#define HNS3_INT_ADAPT_DOWN_START 100
struct hns3_enet_coalesce {
u16 int_gl;
u8 gl_adapt_enable;