[PATCH net-next 2/4] net: hns3: optimize converting dscp to priority process of hns3_nic_select_queue()
From: Guangbin Huang
Date: Thu Sep 15 2022 - 22:41:11 EST
Currently, when function hns3_nic_select_queue() converts dscp to priority,
it calls an indirect callback ae_algo->ops->get_dscp_prio to get priority.
However as function hns3_nic_select_queue() is in fast path, the indirect
call may cause degradation of performance. For optimization, this patch
moves dscp_app_cnt and dscp_prio from struct hclge_tm_info to struct
hnae3_knic_private_info, so they can be used in both hclge and hns3 layers.
Signed-off-by: Guangbin Huang <huangguangbin2@xxxxxxxxxx>
---
drivers/net/ethernet/hisilicon/hns3/hnae3.h | 4 +++
.../net/ethernet/hisilicon/hns3/hns3_enet.c | 13 ++++-----
.../hisilicon/hns3/hns3pf/hclge_dcb.c | 28 +++++++++----------
.../hisilicon/hns3/hns3pf/hclge_debugfs.c | 17 +++++------
.../hisilicon/hns3/hns3pf/hclge_main.c | 11 +++-----
.../hisilicon/hns3/hns3pf/hclge_main.h | 4 ---
.../ethernet/hisilicon/hns3/hns3pf/hclge_tm.c | 18 ++++++------
7 files changed, 45 insertions(+), 50 deletions(-)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hnae3.h b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
index 30a76f44a819..0179fc288f5f 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hnae3.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
@@ -798,6 +798,8 @@ struct hnae3_tc_info {
bool mqprio_active;
};
+#define HNAE3_MAX_DSCP 64
+#define HNAE3_PRIO_ID_INVALID 0xff
struct hnae3_knic_private_info {
struct net_device *netdev; /* Set by KNIC client when init instance */
u16 rss_size; /* Allocated RSS queues */
@@ -809,6 +811,8 @@ struct hnae3_knic_private_info {
struct hnae3_tc_info tc_info;
u8 tc_map_mode;
+ u8 dscp_app_cnt;
+ u8 dscp_prio[HNAE3_MAX_DSCP];
u16 num_tqps; /* total number of TQPs in this handle */
struct hnae3_queue **tqp; /* array base of all TQPs in this instance */
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index db099549e511..39b75b68474c 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -2987,22 +2987,19 @@ static u16 hns3_nic_select_queue(struct net_device *netdev,
struct net_device *sb_dev)
{
struct hnae3_handle *h = hns3_get_handle(netdev);
- u8 dscp, priority;
- int ret;
+ u8 dscp;
if (h->kinfo.tc_map_mode != HNAE3_TC_MAP_MODE_DSCP ||
!h->ae_algo->ops->get_dscp_prio)
goto out;
dscp = hns3_get_skb_dscp(skb);
- if (unlikely(dscp == HNS3_INVALID_DSCP))
- goto out;
-
- ret = h->ae_algo->ops->get_dscp_prio(h, dscp, NULL, &priority);
- if (ret)
+ if (unlikely(dscp >= HNAE3_MAX_DSCP))
goto out;
- skb->priority = priority;
+ skb->priority = h->kinfo.dscp_prio[dscp];
+ if (skb->priority == HNAE3_PRIO_ID_INVALID)
+ skb->priority = 0;
out:
return netdev_pick_tx(netdev, skb, sb_dev);
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c
index fbb159f48b6c..c4aded65e848 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c
@@ -368,14 +368,14 @@ static int hclge_ieee_setapp(struct hnae3_handle *h, struct dcb_app *app)
int ret;
if (app->selector != IEEE_8021QAZ_APP_SEL_DSCP ||
- app->protocol >= HCLGE_MAX_DSCP ||
+ app->protocol >= HNAE3_MAX_DSCP ||
app->priority >= HNAE3_MAX_USER_PRIO)
return -EINVAL;
dev_info(&hdev->pdev->dev, "setapp dscp=%u priority=%u\n",
app->protocol, app->priority);
- if (app->priority == hdev->tm_info.dscp_prio[app->protocol])
+ if (app->priority == h->kinfo.dscp_prio[app->protocol])
return 0;
ret = dcb_ieee_setapp(netdev, app);
@@ -384,21 +384,21 @@ static int hclge_ieee_setapp(struct hnae3_handle *h, struct dcb_app *app)
old_app.selector = IEEE_8021QAZ_APP_SEL_DSCP;
old_app.protocol = app->protocol;
- old_app.priority = hdev->tm_info.dscp_prio[app->protocol];
+ old_app.priority = h->kinfo.dscp_prio[app->protocol];
- hdev->tm_info.dscp_prio[app->protocol] = app->priority;
+ h->kinfo.dscp_prio[app->protocol] = app->priority;
ret = hclge_dscp_to_tc_map(hdev);
if (ret) {
dev_err(&hdev->pdev->dev,
"failed to set dscp to tc map, ret = %d\n", ret);
- hdev->tm_info.dscp_prio[app->protocol] = old_app.priority;
+ h->kinfo.dscp_prio[app->protocol] = old_app.priority;
(void)dcb_ieee_delapp(netdev, app);
return ret;
}
vport->nic.kinfo.tc_map_mode = HNAE3_TC_MAP_MODE_DSCP;
- if (old_app.priority == HCLGE_PRIO_ID_INVALID)
- hdev->tm_info.dscp_app_cnt++;
+ if (old_app.priority == HNAE3_PRIO_ID_INVALID)
+ h->kinfo.dscp_app_cnt++;
else
ret = dcb_ieee_delapp(netdev, &old_app);
@@ -413,9 +413,9 @@ static int hclge_ieee_delapp(struct hnae3_handle *h, struct dcb_app *app)
int ret;
if (app->selector != IEEE_8021QAZ_APP_SEL_DSCP ||
- app->protocol >= HCLGE_MAX_DSCP ||
+ app->protocol >= HNAE3_MAX_DSCP ||
app->priority >= HNAE3_MAX_USER_PRIO ||
- app->priority != hdev->tm_info.dscp_prio[app->protocol])
+ app->priority != h->kinfo.dscp_prio[app->protocol])
return -EINVAL;
dev_info(&hdev->pdev->dev, "delapp dscp=%u priority=%u\n",
@@ -425,20 +425,20 @@ static int hclge_ieee_delapp(struct hnae3_handle *h, struct dcb_app *app)
if (ret)
return ret;
- hdev->tm_info.dscp_prio[app->protocol] = HCLGE_PRIO_ID_INVALID;
+ h->kinfo.dscp_prio[app->protocol] = HNAE3_PRIO_ID_INVALID;
ret = hclge_dscp_to_tc_map(hdev);
if (ret) {
dev_err(&hdev->pdev->dev,
"failed to del dscp to tc map, ret = %d\n", ret);
- hdev->tm_info.dscp_prio[app->protocol] = app->priority;
+ h->kinfo.dscp_prio[app->protocol] = app->priority;
(void)dcb_ieee_setapp(netdev, app);
return ret;
}
- if (hdev->tm_info.dscp_app_cnt)
- hdev->tm_info.dscp_app_cnt--;
+ if (h->kinfo.dscp_app_cnt)
+ h->kinfo.dscp_app_cnt--;
- if (!hdev->tm_info.dscp_app_cnt) {
+ if (!h->kinfo.dscp_app_cnt) {
vport->nic.kinfo.tc_map_mode = HNAE3_TC_MAP_MODE_PRIO;
ret = hclge_up_to_tc_map(hdev);
}
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
index 55f696d071e5..142415c84c6b 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
@@ -1158,17 +1158,18 @@ static int hclge_dbg_dump_qos_pri_map(struct hclge_dev *hdev, char *buf,
static int hclge_dbg_dump_qos_dscp_map(struct hclge_dev *hdev, char *buf,
int len)
{
+ struct hnae3_knic_private_info *kinfo = &hdev->vport[0].nic.kinfo;
struct hclge_desc desc[HCLGE_DSCP_MAP_TC_BD_NUM];
u8 *req0 = (u8 *)desc[0].data;
u8 *req1 = (u8 *)desc[1].data;
- u8 dscp_tc[HCLGE_MAX_DSCP];
+ u8 dscp_tc[HNAE3_MAX_DSCP];
int pos, ret;
u8 i, j;
pos = scnprintf(buf, len, "tc map mode: %s\n",
- tc_map_mode_str[hdev->vport[0].nic.kinfo.tc_map_mode]);
+ tc_map_mode_str[kinfo->tc_map_mode]);
- if (hdev->vport[0].nic.kinfo.tc_map_mode != HNAE3_TC_MAP_MODE_DSCP)
+ if (kinfo->tc_map_mode != HNAE3_TC_MAP_MODE_DSCP)
return 0;
hclge_cmd_setup_basic_desc(&desc[0], HCLGE_OPC_QOS_MAP, true);
@@ -1184,8 +1185,8 @@ static int hclge_dbg_dump_qos_dscp_map(struct hclge_dev *hdev, char *buf,
pos += scnprintf(buf + pos, len - pos, "\nDSCP PRIO TC\n");
/* The low 32 dscp setting use bd0, high 32 dscp setting use bd1 */
- for (i = 0; i < HCLGE_MAX_DSCP / HCLGE_DSCP_MAP_TC_BD_NUM; i++) {
- j = i + HCLGE_MAX_DSCP / HCLGE_DSCP_MAP_TC_BD_NUM;
+ for (i = 0; i < HNAE3_MAX_DSCP / HCLGE_DSCP_MAP_TC_BD_NUM; i++) {
+ j = i + HNAE3_MAX_DSCP / HCLGE_DSCP_MAP_TC_BD_NUM;
/* Each dscp setting has 4 bits, so each byte saves two dscp
* setting
*/
@@ -1195,12 +1196,12 @@ static int hclge_dbg_dump_qos_dscp_map(struct hclge_dev *hdev, char *buf,
dscp_tc[j] &= HCLGE_DBG_TC_MASK;
}
- for (i = 0; i < HCLGE_MAX_DSCP; i++) {
- if (hdev->tm_info.dscp_prio[i] == HCLGE_PRIO_ID_INVALID)
+ for (i = 0; i < HNAE3_MAX_DSCP; i++) {
+ if (kinfo->dscp_prio[i] == HNAE3_PRIO_ID_INVALID)
continue;
pos += scnprintf(buf + pos, len - pos, " %2u %u %u\n",
- i, hdev->tm_info.dscp_prio[i], dscp_tc[i]);
+ i, kinfo->dscp_prio[i], dscp_tc[i]);
}
return 0;
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index d7278d9a4939..66436801fb8e 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -12981,17 +12981,14 @@ static void hclge_clean_vport_config(struct hnae3_ae_dev *ae_dev, int num_vfs)
static int hclge_get_dscp_prio(struct hnae3_handle *h, u8 dscp, u8 *tc_mode,
u8 *priority)
{
- struct hclge_vport *vport = hclge_get_vport(h);
- struct hclge_dev *hdev = vport->back;
-
- if (dscp >= HCLGE_MAX_DSCP)
+ if (dscp >= HNAE3_MAX_DSCP)
return -EINVAL;
if (tc_mode)
- *tc_mode = vport->nic.kinfo.tc_map_mode;
+ *tc_mode = h->kinfo.tc_map_mode;
if (priority)
- *priority = hdev->tm_info.dscp_prio[dscp] == HCLGE_PRIO_ID_INVALID ? 0 :
- hdev->tm_info.dscp_prio[dscp];
+ *priority = h->kinfo.dscp_prio[dscp] == HNAE3_PRIO_ID_INVALID ? 0 :
+ h->kinfo.dscp_prio[dscp];
return 0;
}
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
index 163240adbcce..495b639b0dc2 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
@@ -351,15 +351,11 @@ struct hclge_cfg {
u16 umv_space;
};
-#define HCLGE_MAX_DSCP 64
-#define HCLGE_PRIO_ID_INVALID 0xff
struct hclge_tm_info {
u8 num_tc;
u8 num_pg; /* It must be 1 if vNET-Base schd */
- u8 dscp_app_cnt;
u8 pg_dwrr[HCLGE_PG_NUM];
u8 prio_tc[HNAE3_MAX_USER_PRIO];
- u8 dscp_prio[HCLGE_MAX_DSCP];
struct hclge_pg_info pg_info[HCLGE_PG_NUM];
struct hclge_tc_info tc_info[HNAE3_MAX_TC];
enum hclge_fc_mode fc_mode;
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c
index 7630d1f01e04..4a33f65190e2 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_tm.c
@@ -271,9 +271,9 @@ static void hclge_dscp_to_prio_map_init(struct hclge_dev *hdev)
u8 i;
hdev->vport[0].nic.kinfo.tc_map_mode = HNAE3_TC_MAP_MODE_PRIO;
- hdev->tm_info.dscp_app_cnt = 0;
- for (i = 0; i < HCLGE_MAX_DSCP; i++)
- hdev->tm_info.dscp_prio[i] = HCLGE_PRIO_ID_INVALID;
+ hdev->vport[0].nic.kinfo.dscp_app_cnt = 0;
+ for (i = 0; i < HNAE3_MAX_DSCP; i++)
+ hdev->vport[0].nic.kinfo.dscp_prio[i] = HNAE3_PRIO_ID_INVALID;
}
int hclge_dscp_to_tc_map(struct hclge_dev *hdev)
@@ -288,18 +288,18 @@ int hclge_dscp_to_tc_map(struct hclge_dev *hdev)
hclge_cmd_setup_basic_desc(&desc[1], HCLGE_OPC_QOS_MAP, false);
/* The low 32 dscp setting use bd0, high 32 dscp setting use bd1 */
- for (i = 0; i < HCLGE_MAX_DSCP / HCLGE_DSCP_MAP_TC_BD_NUM; i++) {
- pri_id = hdev->tm_info.dscp_prio[i];
- pri_id = pri_id == HCLGE_PRIO_ID_INVALID ? 0 : pri_id;
+ for (i = 0; i < HNAE3_MAX_DSCP / HCLGE_DSCP_MAP_TC_BD_NUM; i++) {
+ pri_id = hdev->vport[0].nic.kinfo.dscp_prio[i];
+ pri_id = pri_id == HNAE3_PRIO_ID_INVALID ? 0 : pri_id;
tc_id = hdev->tm_info.prio_tc[pri_id];
/* Each dscp setting has 4 bits, so each byte saves two dscp
* setting
*/
req0[i >> 1] |= tc_id << HCLGE_DSCP_TC_SHIFT(i);
- j = i + HCLGE_MAX_DSCP / HCLGE_DSCP_MAP_TC_BD_NUM;
- pri_id = hdev->tm_info.dscp_prio[j];
- pri_id = pri_id == HCLGE_PRIO_ID_INVALID ? 0 : pri_id;
+ j = i + HNAE3_MAX_DSCP / HCLGE_DSCP_MAP_TC_BD_NUM;
+ pri_id = hdev->vport[0].nic.kinfo.dscp_prio[j];
+ pri_id = pri_id == HNAE3_PRIO_ID_INVALID ? 0 : pri_id;
tc_id = hdev->tm_info.prio_tc[pri_id];
req1[i >> 1] |= tc_id << HCLGE_DSCP_TC_SHIFT(i);
}
--
2.33.0