[PATCH net-next] hinic: add set_channels ethtool_ops support
From: Luo bin
Date: Fri May 15 2020 - 04:18:28 EST
add support to change TX/RX queue number with ethtool -L
Signed-off-by: Luo bin <luobin9@xxxxxxxxxx>
---
.../net/ethernet/huawei/hinic/hinic_ethtool.c | 67 +++++++++++++++++--
.../net/ethernet/huawei/hinic/hinic_hw_dev.c | 7 ++
.../net/ethernet/huawei/hinic/hinic_hw_dev.h | 2 +
.../net/ethernet/huawei/hinic/hinic_main.c | 5 +-
drivers/net/ethernet/huawei/hinic/hinic_tx.c | 5 ++
5 files changed, 79 insertions(+), 7 deletions(-)
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_ethtool.c b/drivers/net/ethernet/huawei/hinic/hinic_ethtool.c
index ace18d258049..92a0e3bd19c3 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_ethtool.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_ethtool.c
@@ -619,14 +619,68 @@ static void hinic_get_channels(struct net_device *netdev,
struct hinic_dev *nic_dev = netdev_priv(netdev);
struct hinic_hwdev *hwdev = nic_dev->hwdev;
- channels->max_rx = hwdev->nic_cap.max_qps;
- channels->max_tx = hwdev->nic_cap.max_qps;
+ channels->max_rx = 0;
+ channels->max_tx = 0;
channels->max_other = 0;
- channels->max_combined = 0;
- channels->rx_count = hinic_hwdev_num_qps(hwdev);
- channels->tx_count = hinic_hwdev_num_qps(hwdev);
+ channels->max_combined = nic_dev->max_qps;
+ channels->rx_count = 0;
+ channels->tx_count = 0;
channels->other_count = 0;
- channels->combined_count = 0;
+ channels->combined_count = hinic_hwdev_num_qps(hwdev);
+}
+
+int hinic_set_channels(struct net_device *netdev,
+ struct ethtool_channels *channels)
+{
+ struct hinic_dev *nic_dev = netdev_priv(netdev);
+ unsigned int count = channels->combined_count;
+ int err;
+
+ if (!count) {
+ netif_err(nic_dev, drv, netdev,
+ "Unsupported combined_count: 0\n");
+ return -EINVAL;
+ }
+
+ if (channels->tx_count || channels->rx_count || channels->other_count) {
+ netif_err(nic_dev, drv, netdev,
+ "Setting rx/tx/other count not supported\n");
+ return -EINVAL;
+ }
+
+ if (!(nic_dev->flags & HINIC_RSS_ENABLE)) {
+ netif_err(nic_dev, drv, netdev,
+ "This function doesn't support RSS, only support 1 queue pair\n");
+ return -EOPNOTSUPP;
+ }
+
+ if (count > nic_dev->max_qps) {
+ netif_err(nic_dev, drv, netdev,
+ "Combined count %d exceeds limit %d\n",
+ count, nic_dev->max_qps);
+ return -EINVAL;
+ }
+
+ netif_info(nic_dev, drv, netdev, "Set max combined queue number from %d to %d\n",
+ hinic_hwdev_num_qps(nic_dev->hwdev), count);
+
+ if (netif_running(netdev)) {
+ netif_info(nic_dev, drv, netdev, "Restarting netdev\n");
+ hinic_close(netdev);
+
+ hinic_update_num_qps(nic_dev->hwdev, count);
+
+ err = hinic_open(netdev);
+ if (err) {
+ netif_err(nic_dev, drv, netdev,
+ "Failed to open netdev\n");
+ return -EFAULT;
+ }
+ } else {
+ hinic_update_num_qps(nic_dev->hwdev, count);
+ }
+
+ return 0;
}
static int hinic_get_rss_hash_opts(struct hinic_dev *nic_dev,
@@ -1219,6 +1273,7 @@ static const struct ethtool_ops hinic_ethtool_ops = {
.get_ringparam = hinic_get_ringparam,
.set_ringparam = hinic_set_ringparam,
.get_channels = hinic_get_channels,
+ .set_channels = hinic_set_channels,
.get_rxnfc = hinic_get_rxnfc,
.set_rxnfc = hinic_set_rxnfc,
.get_rxfh_key_size = hinic_get_rxfh_key_size,
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.c b/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.c
index 0245da02efbb..d40a0a5d2c8d 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.c
@@ -858,6 +858,13 @@ int hinic_hwdev_num_qps(struct hinic_hwdev *hwdev)
return nic_cap->num_qps;
}
+void hinic_update_num_qps(struct hinic_hwdev *hwdev, u16 num_qp)
+{
+ struct hinic_cap *nic_cap = &hwdev->nic_cap;
+
+ nic_cap->num_qps = num_qp;
+}
+
/**
* hinic_hwdev_get_sq - get SQ
* @hwdev: the NIC HW device
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.h b/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.h
index 71ea7e46dbbc..e7dfe5ae2f8b 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.h
+++ b/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.h
@@ -359,6 +359,8 @@ int hinic_hwdev_max_num_qps(struct hinic_hwdev *hwdev);
int hinic_hwdev_num_qps(struct hinic_hwdev *hwdev);
+void hinic_update_num_qps(struct hinic_hwdev *hwdev, u16 num_qp);
+
struct hinic_sq *hinic_hwdev_get_sq(struct hinic_hwdev *hwdev, int i);
struct hinic_rq *hinic_hwdev_get_rq(struct hinic_hwdev *hwdev, int i);
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_main.c b/drivers/net/ethernet/huawei/hinic/hinic_main.c
index e3ff119fe341..5a130c982a02 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_main.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_main.c
@@ -326,7 +326,6 @@ static void hinic_enable_rss(struct hinic_dev *nic_dev)
int i, node, err = 0;
u16 num_cpus = 0;
- nic_dev->max_qps = hinic_hwdev_max_num_qps(hwdev);
if (nic_dev->max_qps <= 1) {
nic_dev->flags &= ~HINIC_RSS_ENABLE;
nic_dev->rss_limit = nic_dev->max_qps;
@@ -1043,6 +1042,10 @@ static int nic_dev_init(struct pci_dev *pdev)
nic_dev->rq_depth = HINIC_RQ_DEPTH;
nic_dev->sriov_info.hwdev = hwdev;
nic_dev->sriov_info.pdev = pdev;
+ nic_dev->max_qps = num_qps;
+
+ if (nic_dev->max_qps > 1)
+ nic_dev->flags |= HINIC_RSS_ENABLE;
sema_init(&nic_dev->mgmt_lock, 1);
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_tx.c b/drivers/net/ethernet/huawei/hinic/hinic_tx.c
index 4c66a0bc1b28..6da761d7a6ef 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_tx.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_tx.c
@@ -470,6 +470,11 @@ netdev_tx_t hinic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
struct hinic_txq *txq;
struct hinic_qp *qp;
+ if (unlikely(!netif_carrier_ok(netdev))) {
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+ }
+
txq = &nic_dev->txqs[q_id];
qp = container_of(txq->sq, struct hinic_qp, sq);
--
2.17.1