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Subject[PATCH] mlx5: Add ndo_poll_controller() implementation
Date
This implements ndo_poll_controller in net_device_ops for mlx5, which is
necessary to use netconsole with this driver.

Signed-off-by: Calvin Owens <calvinowens@fb.com>
---
drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 2459c7f..439476f 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -2786,6 +2786,20 @@ static void mlx5e_tx_timeout(struct net_device *dev)
schedule_work(&priv->tx_timeout_work);
}

+#ifdef CONFIG_NET_POLL_CONTROLLER
+/* Fake "interrupt" called by netpoll (eg netconsole) to send skbs without
+ * reenabling interrupts.
+ */
+static void mlx5e_netpoll(struct net_device *dev)
+{
+ struct mlx5e_priv *priv = netdev_priv(dev);
+ int i, nr_sq = priv->params.num_channels * priv->params.num_tc;
+
+ for (i = 0; i < nr_sq; i++)
+ napi_schedule(priv->txq_to_sq_map[i]->cq.napi);
+}
+#endif
+
static const struct net_device_ops mlx5e_netdev_ops_basic = {
.ndo_open = mlx5e_open,
.ndo_stop = mlx5e_close,
@@ -2805,6 +2819,9 @@ static const struct net_device_ops mlx5e_netdev_ops_basic = {
.ndo_rx_flow_steer = mlx5e_rx_flow_steer,
#endif
.ndo_tx_timeout = mlx5e_tx_timeout,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = mlx5e_netpoll,
+#endif
};

static const struct net_device_ops mlx5e_netdev_ops_sriov = {
@@ -2836,6 +2853,9 @@ static const struct net_device_ops mlx5e_netdev_ops_sriov = {
.ndo_set_vf_link_state = mlx5e_set_vf_link_state,
.ndo_get_vf_stats = mlx5e_get_vf_stats,
.ndo_tx_timeout = mlx5e_tx_timeout,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = mlx5e_netpoll,
+#endif
};

static int mlx5e_check_required_hca_cap(struct mlx5_core_dev *mdev)
--
2.9.3
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