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Date: Sat, 30 Oct 2021 21:10:00 +0800
From: Guangbin Huang <huangguangbin2@...wei.com>
To: <davem@...emloft.net>, <kuba@...nel.org>, <mkubecek@...e.cz>,
<andrew@...n.ch>, <amitc@...lanox.com>, <idosch@...sch.org>,
<danieller@...dia.com>, <jesse.brandeburg@...el.com>,
<anthony.l.nguyen@...el.com>, <jdike@...toit.com>,
<richard@....at>, <anton.ivanov@...bridgegreys.com>,
<netanel@...zon.com>, <akiyano@...zon.com>, <gtzalik@...zon.com>,
<saeedb@...zon.com>, <chris.snook@...il.com>,
<ulli.kroll@...glemail.com>, <linus.walleij@...aro.org>,
<jeroendb@...gle.com>, <csully@...gle.com>,
<awogbemila@...gle.com>, <jdmason@...zu.us>,
<rain.1986.08.12@...il.com>, <zyjzyj2000@...il.com>,
<kys@...rosoft.com>, <haiyangz@...rosoft.com>, <mst@...hat.com>,
<jasowang@...hat.com>, <doshir@...are.com>,
<pv-drivers@...are.com>, <jwi@...ux.ibm.com>,
<kgraul@...ux.ibm.com>, <hca@...ux.ibm.com>, <gor@...ux.ibm.com>,
<johannes@...solutions.net>
CC: <netdev@...r.kernel.org>, <lipeng321@...wei.com>,
<chenhao288@...ilicon.com>, <huangguangbin2@...wei.com>,
<linux-s390@...r.kernel.org>
Subject: [PATCH V5 net-next 5/6] net: hns3: add support to set/get rx buf len via ethtool for hns3 driver
From: Hao Chen <chenhao288@...ilicon.com>
Rx buf len is for rx BD buffer size, support setting it via ethtool -G
parameter and getting it via ethtool -g parameter.
Signed-off-by: Hao Chen <chenhao288@...ilicon.com>
Signed-off-by: Guangbin Huang <huangguangbin2@...wei.com>
---
.../ethernet/hisilicon/hns3/hns3_ethtool.c | 52 ++++++++++++++++---
1 file changed, 44 insertions(+), 8 deletions(-)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
index dcbab2cb6ae2..219c27a3750b 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
@@ -647,7 +647,7 @@ static void hns3_get_ringparam(struct net_device *netdev,
{
struct hns3_nic_priv *priv = netdev_priv(netdev);
struct hnae3_handle *h = priv->ae_handle;
- int queue_num = h->kinfo.num_tqps;
+ int rx_queue_index = h->kinfo.num_tqps;
if (hns3_nic_resetting(netdev)) {
netdev_err(netdev, "dev resetting!");
@@ -658,7 +658,8 @@ static void hns3_get_ringparam(struct net_device *netdev,
param->rx_max_pending = HNS3_RING_MAX_PENDING;
param->tx_pending = priv->ring[0].desc_num;
- param->rx_pending = priv->ring[queue_num].desc_num;
+ param->rx_pending = priv->ring[rx_queue_index].desc_num;
+ kernel_param->rx_buf_len = priv->ring[rx_queue_index].buf_size;
}
static void hns3_get_pauseparam(struct net_device *netdev,
@@ -1060,14 +1061,23 @@ static struct hns3_enet_ring *hns3_backup_ringparam(struct hns3_nic_priv *priv)
}
static int hns3_check_ringparam(struct net_device *ndev,
- struct ethtool_ringparam *param)
+ struct ethtool_ringparam *param,
+ struct kernel_ethtool_ringparam *kernel_param)
{
+#define RX_BUF_LEN_2K 2048
+#define RX_BUF_LEN_4K 4096
if (hns3_nic_resetting(ndev))
return -EBUSY;
if (param->rx_mini_pending || param->rx_jumbo_pending)
return -EINVAL;
+ if (kernel_param->rx_buf_len != RX_BUF_LEN_2K &&
+ kernel_param->rx_buf_len != RX_BUF_LEN_4K) {
+ netdev_err(ndev, "Rx buf len only support 2048 and 4096\n");
+ return -EINVAL;
+ }
+
if (param->tx_pending > HNS3_RING_MAX_PENDING ||
param->tx_pending < HNS3_RING_MIN_PENDING ||
param->rx_pending > HNS3_RING_MAX_PENDING ||
@@ -1080,6 +1090,22 @@ static int hns3_check_ringparam(struct net_device *ndev,
return 0;
}
+static int hns3_change_rx_buf_len(struct net_device *ndev, u32 rx_buf_len)
+{
+ struct hns3_nic_priv *priv = netdev_priv(ndev);
+ struct hnae3_handle *h = priv->ae_handle;
+ int i;
+
+ h->kinfo.rx_buf_len = rx_buf_len;
+
+ for (i = 0; i < h->kinfo.num_tqps; i++) {
+ h->kinfo.tqp[i]->buf_size = rx_buf_len;
+ priv->ring[i + h->kinfo.num_tqps].buf_size = rx_buf_len;
+ }
+
+ return 0;
+}
+
static int hns3_set_ringparam(struct net_device *ndev,
struct ethtool_ringparam *param,
struct kernel_ethtool_ringparam *kernel_param,
@@ -1092,9 +1118,10 @@ static int hns3_set_ringparam(struct net_device *ndev,
u32 old_tx_desc_num, new_tx_desc_num;
u32 old_rx_desc_num, new_rx_desc_num;
u16 queue_num = h->kinfo.num_tqps;
+ u32 old_rx_buf_len;
int ret, i;
- ret = hns3_check_ringparam(ndev, param);
+ ret = hns3_check_ringparam(ndev, param, kernel_param);
if (ret)
return ret;
@@ -1103,8 +1130,10 @@ static int hns3_set_ringparam(struct net_device *ndev,
new_rx_desc_num = ALIGN(param->rx_pending, HNS3_RING_BD_MULTIPLE);
old_tx_desc_num = priv->ring[0].desc_num;
old_rx_desc_num = priv->ring[queue_num].desc_num;
+ old_rx_buf_len = priv->ring[queue_num].buf_size;
if (old_tx_desc_num == new_tx_desc_num &&
- old_rx_desc_num == new_rx_desc_num)
+ old_rx_desc_num == new_rx_desc_num &&
+ kernel_param->rx_buf_len == old_rx_buf_len)
return 0;
tmp_rings = hns3_backup_ringparam(priv);
@@ -1115,19 +1144,22 @@ static int hns3_set_ringparam(struct net_device *ndev,
}
netdev_info(ndev,
- "Changing Tx/Rx ring depth from %u/%u to %u/%u\n",
+ "Changing Tx/Rx ring depth from %u/%u to %u/%u, Changing rx buffer len from %d to %d\n",
old_tx_desc_num, old_rx_desc_num,
- new_tx_desc_num, new_rx_desc_num);
+ new_tx_desc_num, new_rx_desc_num,
+ old_rx_buf_len, kernel_param->rx_buf_len);
if (if_running)
ndev->netdev_ops->ndo_stop(ndev);
hns3_change_all_ring_bd_num(priv, new_tx_desc_num, new_rx_desc_num);
+ hns3_change_rx_buf_len(ndev, kernel_param->rx_buf_len);
ret = hns3_init_all_ring(priv);
if (ret) {
- netdev_err(ndev, "Change bd num fail, revert to old value(%d)\n",
+ netdev_err(ndev, "set ringparam fail, revert to old value(%d)\n",
ret);
+ hns3_change_rx_buf_len(ndev, old_rx_buf_len);
hns3_change_all_ring_bd_num(priv, old_tx_desc_num,
old_rx_desc_num);
for (i = 0; i < h->kinfo.num_tqps * 2; i++)
@@ -1809,6 +1841,8 @@ static int hns3_set_tunable(struct net_device *netdev,
ETHTOOL_COALESCE_MAX_FRAMES | \
ETHTOOL_COALESCE_USE_CQE)
+#define HNS3_ETHTOOL_RING ETHTOOL_RING_USE_RX_BUF_LEN
+
static int hns3_get_ts_info(struct net_device *netdev,
struct ethtool_ts_info *info)
{
@@ -1887,6 +1921,7 @@ static int hns3_get_link_ext_state(struct net_device *netdev,
static const struct ethtool_ops hns3vf_ethtool_ops = {
.supported_coalesce_params = HNS3_ETHTOOL_COALESCE,
+ .supported_ring_params = HNS3_ETHTOOL_RING,
.get_drvinfo = hns3_get_drvinfo,
.get_ringparam = hns3_get_ringparam,
.set_ringparam = hns3_set_ringparam,
@@ -1918,6 +1953,7 @@ static const struct ethtool_ops hns3vf_ethtool_ops = {
static const struct ethtool_ops hns3_ethtool_ops = {
.supported_coalesce_params = HNS3_ETHTOOL_COALESCE,
+ .supported_ring_params = HNS3_ETHTOOL_RING,
.self_test = hns3_self_test,
.get_drvinfo = hns3_get_drvinfo,
.get_link = hns3_get_link,
--
2.33.0
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