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net/mlx4_en: Fix ethtool rules leftovers after module unloaded 

As part of the driver unload flow, all steering rules must be deleted,
make sure to remove the rules that were set through ethtool.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hadar Hen Zion 2013-01-30 23:07:08 +00:00 committed by David S. Miller
parent 280fce1e3e
commit 0d256c0e93
3 changed files with 21 additions and 0 deletions
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3
drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
View File

@ -915,6 +915,7 @@ static int mlx4_en_flow_replace(struct net_device *dev,
loc_rule->id = 0;
memset(&loc_rule->flow_spec, 0,
sizeof(struct ethtool_rx_flow_spec));
list_del(&loc_rule->list);
}
err = mlx4_flow_attach(priv->mdev->dev, &rule, &reg_id);
if (err) {
@ -925,6 +926,7 @@ static int mlx4_en_flow_replace(struct net_device *dev,
loc_rule->id = reg_id;
memcpy(&loc_rule->flow_spec, &cmd->fs,
sizeof(struct ethtool_rx_flow_spec));
list_add_tail(&loc_rule->list, &priv->ethtool_list);
out_free_list:
list_for_each_entry_safe(spec, tmp_spec, &rule.list, list) {
@ -958,6 +960,7 @@ static int mlx4_en_flow_detach(struct net_device *dev,
}
rule->id = 0;
memset(&rule->flow_spec, 0, sizeof(struct ethtool_rx_flow_spec));
list_del(&rule->list);
out:
return err;

15
drivers/net/ethernet/mellanox/mlx4/en_netdev.c
View File

@ -1039,6 +1039,9 @@ int mlx4_en_start_port(struct net_device *dev)
INIT_LIST_HEAD(&priv->mc_list);
INIT_LIST_HEAD(&priv->curr_list);
INIT_LIST_HEAD(&priv->ethtool_list);
memset(&priv->ethtool_rules[0], 0,
sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
/* Calculate Rx buf size */
dev->mtu = min(dev->mtu, priv->max_mtu);
@ -1202,6 +1205,7 @@ void mlx4_en_stop_port(struct net_device *dev)
struct mlx4_en_priv *priv = netdev_priv(dev);
struct mlx4_en_dev *mdev = priv->mdev;
struct mlx4_en_mc_list *mclist, *tmp;
struct ethtool_flow_id *flow, *tmp_flow;
int i;
u8 mc_list[16] = {0};
@ -1283,6 +1287,17 @@ void mlx4_en_stop_port(struct net_device *dev)
mlx4_put_eth_qp(mdev->dev, priv->port, priv->mac, priv->base_qpn);
mdev->mac_removed[priv->port] = 1;
/* Remove flow steering rules for the port*/
if (mdev->dev->caps.steering_mode ==
MLX4_STEERING_MODE_DEVICE_MANAGED) {
ASSERT_RTNL();
list_for_each_entry_safe(flow, tmp_flow,
&priv->ethtool_list, list) {
mlx4_flow_detach(mdev->dev, flow->id);
list_del(&flow->list);
}
}
/* Free RX Rings */
for (i = 0; i < priv->rx_ring_num; i++) {
mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);

3
drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
View File

@ -427,6 +427,7 @@ struct mlx4_en_frag_info {
#endif
struct ethtool_flow_id {
struct list_head list;
struct ethtool_rx_flow_spec flow_spec;
u64 id;
};
@ -441,6 +442,8 @@ struct mlx4_en_priv {
struct mlx4_en_port_state port_state;
spinlock_t stats_lock;
struct ethtool_flow_id ethtool_rules[MAX_NUM_OF_FS_RULES];
/* To allow rules removal while port is going down */
struct list_head ethtool_list;
unsigned long last_moder_packets[MAX_RX_RINGS];
unsigned long last_moder_tx_packets;