net/mlx5e: Add support for multiple profiles

To allow support in representor netdevices where we create more than one
netdevice per NIC, add profiles to the mlx5e driver. The profiling
allows for creation of mlx5e instances with different characteristics.

Each profile implements its own behavior using set of function pointers
defined in struct mlx5e_profile. This is done to allow for avoiding complex
per profix branching in the code.

Currently only the profile for the conventional NIC is implemented,
which is of use when a netdev is created upon pci probe.

This patch doesn't add any new functionality.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlx5/core/en.h

@@ -568,6 +568,22 @@ enum {
 	MLX5E_NIC_PRIO
 };
 
+struct mlx5e_profile {
+	void	(*init)(struct mlx5_core_dev *mdev,
+			struct net_device *netdev,
+			const struct mlx5e_profile *profile);
+	void	(*cleanup)(struct mlx5e_priv *priv);
+	int	(*init_rx)(struct mlx5e_priv *priv);
+	void	(*cleanup_rx)(struct mlx5e_priv *priv);
+	int	(*init_tx)(struct mlx5e_priv *priv);
+	void	(*cleanup_tx)(struct mlx5e_priv *priv);
+	void	(*enable)(struct mlx5e_priv *priv);
+	void	(*disable)(struct mlx5e_priv *priv);
+	void	(*update_stats)(struct mlx5e_priv *priv);
+	int	(*max_nch)(struct mlx5_core_dev *mdev);
+	int	max_tc;
+};
+
 struct mlx5e_priv {
 	/* priv data path fields - start */
 	struct mlx5e_sq            **txq_to_sq_map;
@@ -601,6 +617,7 @@ struct mlx5e_priv {
 	struct mlx5e_stats         stats;
 	struct mlx5e_tstamp        tstamp;
 	u16 q_counter;
+	const struct mlx5e_profile *profile;
 };
 
 enum mlx5e_link_mode {

drivers/net/ethernet/mellanox/mlx5/core/en_main.c

@@ -233,7 +233,7 @@ static void mlx5e_update_stats_work(struct work_struct *work)
 					       update_stats_work);
 	mutex_lock(&priv->state_lock);
 	if (test_bit(MLX5E_STATE_OPENED, &priv->state)) {
-		mlx5e_update_stats(priv);
+		priv->profile->update_stats(priv);
 		queue_delayed_work(priv->wq, dwork,
 				   msecs_to_jiffies(MLX5E_UPDATE_STATS_INTERVAL));
 	}
@@ -1036,7 +1036,7 @@ static void mlx5e_build_channeltc_to_txq_map(struct mlx5e_priv *priv, int ix)
 {
 	int i;
 
-	for (i = 0; i < MLX5E_MAX_NUM_TC; i++)
+	for (i = 0; i < priv->profile->max_tc; i++)
 		priv->channeltc_to_txq_map[ix][i] =
 			ix + i * priv->params.num_channels;
 }
@@ -1524,21 +1524,20 @@ static void mlx5e_destroy_rqt(struct mlx5e_priv *priv, struct mlx5e_rqt *rqt)
 	mlx5_core_destroy_rqt(priv->mdev, rqt->rqtn);
 }
 
-static int mlx5e_create_rqts(struct mlx5e_priv *priv)
+static int mlx5e_create_indirect_rqts(struct mlx5e_priv *priv)
+{
+	struct mlx5e_rqt *rqt = &priv->indir_rqt;
+
+	return mlx5e_create_rqt(priv, MLX5E_INDIR_RQT_SIZE, 0, rqt);
+}
+
+static int mlx5e_create_direct_rqts(struct mlx5e_priv *priv)
 {
-	int nch = mlx5e_get_max_num_channels(priv->mdev);
 	struct mlx5e_rqt *rqt;
 	int err;
 	int ix;
 
-	/* Indirect RQT */
-	rqt = &priv->indir_rqt;
-	err = mlx5e_create_rqt(priv, MLX5E_INDIR_RQT_SIZE, 0, rqt);
-	if (err)
-		return err;
-
-	/* Direct RQTs */
-	for (ix = 0; ix < nch; ix++) {
+	for (ix = 0; ix < priv->profile->max_nch(priv->mdev); ix++) {
 		rqt = &priv->direct_tir[ix].rqt;
 		err = mlx5e_create_rqt(priv, 1 /*size */, ix, rqt);
 		if (err)
@@ -1551,22 +1550,9 @@ err_destroy_rqts:
 	for (ix--; ix >= 0; ix--)
 		mlx5e_destroy_rqt(priv, &priv->direct_tir[ix].rqt);
 
-	mlx5e_destroy_rqt(priv, &priv->indir_rqt);
-
 	return err;
 }
 
-static void mlx5e_destroy_rqts(struct mlx5e_priv *priv)
-{
-	int nch = mlx5e_get_max_num_channels(priv->mdev);
-	int i;
-
-	for (i = 0; i < nch; i++)
-		mlx5e_destroy_rqt(priv, &priv->direct_tir[i].rqt);
-
-	mlx5e_destroy_rqt(priv, &priv->indir_rqt);
-}
-
 int mlx5e_redirect_rqt(struct mlx5e_priv *priv, u32 rqtn, int sz, int ix)
 {
 	struct mlx5_core_dev *mdev = priv->mdev;
@@ -1676,7 +1662,7 @@ static int mlx5e_modify_tirs_lro(struct mlx5e_priv *priv)
 			goto free_in;
 	}
 
-	for (ix = 0; ix < mlx5e_get_max_num_channels(mdev); ix++) {
+	for (ix = 0; ix < priv->profile->max_nch(priv->mdev); ix++) {
 		err = mlx5_core_modify_tir(mdev, priv->direct_tir[ix].tirn,
 					   in, inlen);
 		if (err)
@@ -1976,7 +1962,7 @@ static int mlx5e_create_tises(struct mlx5e_priv *priv)
 	int err;
 	int tc;
 
-	for (tc = 0; tc < MLX5E_MAX_NUM_TC; tc++) {
+	for (tc = 0; tc < priv->profile->max_tc; tc++) {
 		err = mlx5e_create_tis(priv, tc);
 		if (err)
 			goto err_close_tises;
@@ -1991,11 +1977,11 @@ err_close_tises:
 	return err;
 }
 
-static void mlx5e_destroy_tises(struct mlx5e_priv *priv)
+static void mlx5e_cleanup_nic_tx(struct mlx5e_priv *priv)
 {
 	int tc;
 
-	for (tc = 0; tc < MLX5E_MAX_NUM_TC; tc++)
+	for (tc = 0; tc < priv->profile->max_tc; tc++)
 		mlx5e_destroy_tis(priv, tc);
 }
 
@@ -2120,15 +2106,13 @@ static void mlx5e_build_direct_tir_ctx(struct mlx5e_priv *priv, u32 *tirc,
 	MLX5_SET(tirc, tirc, rx_hash_fn, MLX5_RX_HASH_FN_INVERTED_XOR8);
 }
 
-static int mlx5e_create_tirs(struct mlx5e_priv *priv)
+static int mlx5e_create_indirect_tirs(struct mlx5e_priv *priv)
 {
-	int nch = mlx5e_get_max_num_channels(priv->mdev);
 	struct mlx5e_tir *tir;
 	void *tirc;
 	int inlen;
 	int err;
 	u32 *in;
-	int ix;
 	int tt;
 
 	inlen = MLX5_ST_SZ_BYTES(create_tir_in);
@@ -2136,7 +2120,6 @@ static int mlx5e_create_tirs(struct mlx5e_priv *priv)
 	if (!in)
 		return -ENOMEM;
 
-	/* indirect tirs */
 	for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++) {
 		memset(in, 0, inlen);
 		tir = &priv->indir_tir[tt];
@@ -2147,7 +2130,34 @@ static int mlx5e_create_tirs(struct mlx5e_priv *priv)
 			goto err_destroy_tirs;
 	}
 
-	/* direct tirs */
+	kvfree(in);
+
+	return 0;
+
+err_destroy_tirs:
+	for (tt--; tt >= 0; tt--)
+		mlx5e_destroy_tir(priv->mdev, &priv->indir_tir[tt]);
+
+	kvfree(in);
+
+	return err;
+}
+
+static int mlx5e_create_direct_tirs(struct mlx5e_priv *priv)
+{
+	int nch = priv->profile->max_nch(priv->mdev);
+	struct mlx5e_tir *tir;
+	void *tirc;
+	int inlen;
+	int err;
+	u32 *in;
+	int ix;
+
+	inlen = MLX5_ST_SZ_BYTES(create_tir_in);
+	in = mlx5_vzalloc(inlen);
+	if (!in)
+		return -ENOMEM;
+
 	for (ix = 0; ix < nch; ix++) {
 		memset(in, 0, inlen);
 		tir = &priv->direct_tir[ix];
@@ -2167,27 +2177,28 @@ err_destroy_ch_tirs:
 	for (ix--; ix >= 0; ix--)
 		mlx5e_destroy_tir(priv->mdev, &priv->direct_tir[ix]);
 
-err_destroy_tirs:
-	for (tt--; tt >= 0; tt--)
-		mlx5e_destroy_tir(priv->mdev, &priv->indir_tir[tt]);
-
 	kvfree(in);
 
 	return err;
 }
 
-static void mlx5e_destroy_tirs(struct mlx5e_priv *priv)
+static void mlx5e_destroy_indirect_tirs(struct mlx5e_priv *priv)
 {
-	int nch = mlx5e_get_max_num_channels(priv->mdev);
 	int i;
 
-	for (i = 0; i < nch; i++)
-		mlx5e_destroy_tir(priv->mdev, &priv->direct_tir[i]);
-
 	for (i = 0; i < MLX5E_NUM_INDIR_TIRS; i++)
 		mlx5e_destroy_tir(priv->mdev, &priv->indir_tir[i]);
 }
 
+static void mlx5e_destroy_direct_tirs(struct mlx5e_priv *priv)
+{
+	int nch = priv->profile->max_nch(priv->mdev);
+	int i;
+
+	for (i = 0; i < nch; i++)
+		mlx5e_destroy_tir(priv->mdev, &priv->direct_tir[i]);
+}
+
 int mlx5e_modify_rqs_vsd(struct mlx5e_priv *priv, bool vsd)
 {
 	int err = 0;
@@ -2867,9 +2878,9 @@ void mlx5e_set_rx_cq_mode_params(struct mlx5e_params *params, u8 cq_period_mode)
 			MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_USEC_FROM_CQE;
 }
 
-static void mlx5e_build_netdev_priv(struct mlx5_core_dev *mdev,
-				    struct net_device *netdev,
-				    int num_channels)
+static void mlx5e_build_nic_netdev_priv(struct mlx5_core_dev *mdev,
+					struct net_device *netdev,
+					const struct mlx5e_profile *profile)
 {
 	struct mlx5e_priv *priv = netdev_priv(netdev);
 	u32 link_speed = 0;
@@ -2938,7 +2949,7 @@ static void mlx5e_build_netdev_priv(struct mlx5_core_dev *mdev,
 			    sizeof(priv->params.toeplitz_hash_key));
 
 	mlx5e_build_default_indir_rqt(mdev, priv->params.indirection_rqt,
-				      MLX5E_INDIR_RQT_SIZE, num_channels);
+				      MLX5E_INDIR_RQT_SIZE, profile->max_nch(mdev));
 
 	priv->params.lro_wqe_sz            =
 		MLX5E_PARAMS_DEFAULT_LRO_WQE_SZ;
@@ -2949,7 +2960,8 @@ static void mlx5e_build_netdev_priv(struct mlx5_core_dev *mdev,
 
 	priv->mdev                         = mdev;
 	priv->netdev                       = netdev;
-	priv->params.num_channels          = num_channels;
+	priv->params.num_channels          = profile->max_nch(mdev);
+	priv->profile                      = profile;
 
 #ifdef CONFIG_MLX5_CORE_EN_DCB
 	mlx5e_ets_init(priv);
@@ -2974,7 +2986,7 @@ static void mlx5e_set_netdev_dev_addr(struct net_device *netdev)
 	}
 }
 
-static void mlx5e_build_netdev(struct net_device *netdev)
+static void mlx5e_build_nic_netdev(struct net_device *netdev)
 {
 	struct mlx5e_priv *priv = netdev_priv(netdev);
 	struct mlx5_core_dev *mdev = priv->mdev;
@@ -3084,7 +3096,7 @@ static int mlx5e_create_umr_mkey(struct mlx5e_priv *priv)
 	struct mlx5_mkey_seg *mkc;
 	int inlen = sizeof(*in);
 	u64 npages =
-		mlx5e_get_max_num_channels(mdev) * MLX5_CHANNEL_MAX_NUM_MTTS;
+		priv->profile->max_nch(mdev) * MLX5_CHANNEL_MAX_NUM_MTTS;
 	int err;
 
 	in = mlx5_vzalloc(inlen);
@@ -3112,23 +3124,159 @@ static int mlx5e_create_umr_mkey(struct mlx5e_priv *priv)
 	return err;
 }
 
-static void *mlx5e_create_netdev(struct mlx5_core_dev *mdev)
+static void mlx5e_nic_init(struct mlx5_core_dev *mdev,
+			   struct net_device *netdev,
+			   const struct mlx5e_profile *profile)
+{
+	struct mlx5e_priv *priv = netdev_priv(netdev);
+
+	mlx5e_build_nic_netdev_priv(mdev, netdev, profile);
+	mlx5e_build_nic_netdev(netdev);
+	mlx5e_vxlan_init(priv);
+}
+
+static void mlx5e_nic_cleanup(struct mlx5e_priv *priv)
+{
+	mlx5e_vxlan_cleanup(priv);
+}
+
+static int mlx5e_init_nic_rx(struct mlx5e_priv *priv)
+{
+	struct mlx5_core_dev *mdev = priv->mdev;
+	int err;
+	int i;
+
+	err = mlx5e_create_indirect_rqts(priv);
+	if (err) {
+		mlx5_core_warn(mdev, "create indirect rqts failed, %d\n", err);
+		return err;
+	}
+
+	err = mlx5e_create_direct_rqts(priv);
+	if (err) {
+		mlx5_core_warn(mdev, "create direct rqts failed, %d\n", err);
+		goto err_destroy_indirect_rqts;
+	}
+
+	err = mlx5e_create_indirect_tirs(priv);
+	if (err) {
+		mlx5_core_warn(mdev, "create indirect tirs failed, %d\n", err);
+		goto err_destroy_direct_rqts;
+	}
+
+	err = mlx5e_create_direct_tirs(priv);
+	if (err) {
+		mlx5_core_warn(mdev, "create direct tirs failed, %d\n", err);
+		goto err_destroy_indirect_tirs;
+	}
+
+	err = mlx5e_create_flow_steering(priv);
+	if (err) {
+		mlx5_core_warn(mdev, "create flow steering failed, %d\n", err);
+		goto err_destroy_direct_tirs;
+	}
+
+	err = mlx5e_tc_init(priv);
+	if (err)
+		goto err_destroy_flow_steering;
+
+	return 0;
+
+err_destroy_flow_steering:
+	mlx5e_destroy_flow_steering(priv);
+err_destroy_direct_tirs:
+	mlx5e_destroy_direct_tirs(priv);
+err_destroy_indirect_tirs:
+	mlx5e_destroy_indirect_tirs(priv);
+err_destroy_direct_rqts:
+	for (i = 0; i < priv->profile->max_nch(mdev); i++)
+		mlx5e_destroy_rqt(priv, &priv->direct_tir[i].rqt);
+err_destroy_indirect_rqts:
+	mlx5e_destroy_rqt(priv, &priv->indir_rqt);
+	return err;
+}
+
+static void mlx5e_cleanup_nic_rx(struct mlx5e_priv *priv)
+{
+	int i;
+
+	mlx5e_tc_cleanup(priv);
+	mlx5e_destroy_flow_steering(priv);
+	mlx5e_destroy_direct_tirs(priv);
+	mlx5e_destroy_indirect_tirs(priv);
+	for (i = 0; i < priv->profile->max_nch(priv->mdev); i++)
+		mlx5e_destroy_rqt(priv, &priv->direct_tir[i].rqt);
+	mlx5e_destroy_rqt(priv, &priv->indir_rqt);
+}
+
+static int mlx5e_init_nic_tx(struct mlx5e_priv *priv)
+{
+	int err;
+
+	err = mlx5e_create_tises(priv);
+	if (err) {
+		mlx5_core_warn(priv->mdev, "create tises failed, %d\n", err);
+		return err;
+	}
+
+#ifdef CONFIG_MLX5_CORE_EN_DCB
+	mlx5e_dcbnl_ieee_setets_core(priv, &priv->params.ets);
+#endif
+	return 0;
+}
+
+static void mlx5e_nic_enable(struct mlx5e_priv *priv)
+{
+	struct net_device *netdev = priv->netdev;
+	struct mlx5_core_dev *mdev = priv->mdev;
+
+	if (mlx5e_vxlan_allowed(mdev)) {
+		rtnl_lock();
+		udp_tunnel_get_rx_info(netdev);
+		rtnl_unlock();
+	}
+
+	mlx5e_enable_async_events(priv);
+	queue_work(priv->wq, &priv->set_rx_mode_work);
+}
+
+static void mlx5e_nic_disable(struct mlx5e_priv *priv)
+{
+	queue_work(priv->wq, &priv->set_rx_mode_work);
+	mlx5e_disable_async_events(priv);
+}
+
+static const struct mlx5e_profile mlx5e_nic_profile = {
+	.init		   = mlx5e_nic_init,
+	.cleanup	   = mlx5e_nic_cleanup,
+	.init_rx	   = mlx5e_init_nic_rx,
+	.cleanup_rx	   = mlx5e_cleanup_nic_rx,
+	.init_tx	   = mlx5e_init_nic_tx,
+	.cleanup_tx	   = mlx5e_cleanup_nic_tx,
+	.enable		   = mlx5e_nic_enable,
+	.disable	   = mlx5e_nic_disable,
+	.update_stats	   = mlx5e_update_stats,
+	.max_nch	   = mlx5e_get_max_num_channels,
+	.max_tc		   = MLX5E_MAX_NUM_TC,
+};
+
+static void *mlx5e_create_netdev(struct mlx5_core_dev *mdev,
+				 const struct mlx5e_profile *profile)
 {
 	struct net_device *netdev;
 	struct mlx5e_priv *priv;
-	int nch = mlx5e_get_max_num_channels(mdev);
+	int nch = profile->max_nch(mdev);
 	int err;
 
 	netdev = alloc_etherdev_mqs(sizeof(struct mlx5e_priv),
-				    nch * MLX5E_MAX_NUM_TC,
+				    nch * profile->max_tc,
 				    nch);
 	if (!netdev) {
 		mlx5_core_err(mdev, "alloc_etherdev_mqs() failed\n");
 		return NULL;
 	}
 
-	mlx5e_build_netdev_priv(mdev, netdev, nch);
-	mlx5e_build_netdev(netdev);
+	profile->init(mdev, netdev, profile);
 
 	netif_carrier_off(netdev);
 
@@ -3144,85 +3292,44 @@ static void *mlx5e_create_netdev(struct mlx5_core_dev *mdev)
 		goto err_destroy_wq;
 	}
 
-	err = mlx5e_create_tises(priv);
-	if (err) {
-		mlx5_core_warn(mdev, "create tises failed, %d\n", err);
+	err = profile->init_tx(priv);
+	if (err)
 		goto err_destroy_umr_mkey;
-	}
 
 	err = mlx5e_open_drop_rq(priv);
 	if (err) {
 		mlx5_core_err(mdev, "open drop rq failed, %d\n", err);
-		goto err_destroy_tises;
+		goto err_cleanup_tx;
 	}
 
-	err = mlx5e_create_rqts(priv);
-	if (err) {
-		mlx5_core_warn(mdev, "create rqts failed, %d\n", err);
+	err = profile->init_rx(priv);
+	if (err)
 		goto err_close_drop_rq;
-	}
-
-	err = mlx5e_create_tirs(priv);
-	if (err) {
-		mlx5_core_warn(mdev, "create tirs failed, %d\n", err);
-		goto err_destroy_rqts;
-	}
-
-	err = mlx5e_create_flow_steering(priv);
-	if (err) {
-		mlx5_core_warn(mdev, "create flow steering failed, %d\n", err);
-		goto err_destroy_tirs;
-	}
 
 	mlx5e_create_q_counter(priv);
 
 	mlx5e_init_l2_addr(priv);
 
-	mlx5e_vxlan_init(priv);
-
-	err = mlx5e_tc_init(priv);
-	if (err)
-		goto err_dealloc_q_counters;
-
-#ifdef CONFIG_MLX5_CORE_EN_DCB
-	mlx5e_dcbnl_ieee_setets_core(priv, &priv->params.ets);
-#endif
-
 	err = register_netdev(netdev);
 	if (err) {
 		mlx5_core_err(mdev, "register_netdev failed, %d\n", err);
-		goto err_tc_cleanup;
-	}
-
-	if (mlx5e_vxlan_allowed(mdev)) {
-		rtnl_lock();
-		udp_tunnel_get_rx_info(netdev);
-		rtnl_unlock();
+		goto err_dealloc_q_counters;
 	}
 
-	mlx5e_enable_async_events(priv);
-	queue_work(priv->wq, &priv->set_rx_mode_work);
+	if (profile->enable)
+		profile->enable(priv);
 
 	return priv;
 
-err_tc_cleanup:
-	mlx5e_tc_cleanup(priv);
-
 err_dealloc_q_counters:
 	mlx5e_destroy_q_counter(priv);
-	mlx5e_destroy_flow_steering(priv);
-
-err_destroy_tirs:
-	mlx5e_destroy_tirs(priv);
-
-err_destroy_rqts:
-	mlx5e_destroy_rqts(priv);
+	profile->cleanup_rx(priv);
 
 err_close_drop_rq:
 	mlx5e_close_drop_rq(priv);
 
-err_destroy_tises:
-	mlx5e_destroy_tises(priv);
+err_cleanup_tx:
+	profile->cleanup_tx(priv);
 
 err_destroy_umr_mkey:
 	mlx5_core_destroy_mkey(mdev, &priv->umr_mkey);
@@ -3246,7 +3353,7 @@ static void *mlx5e_add(struct mlx5_core_dev *mdev)
 	if (mlx5e_create_mdev_resources(mdev))
 		return NULL;
 
-	ret = mlx5e_create_netdev(mdev);
+	ret = mlx5e_create_netdev(mdev, &mlx5e_nic_profile);
 	if (!ret) {
 		mlx5e_destroy_mdev_resources(mdev);
 		return NULL;
@@ -3254,15 +3361,15 @@ static void *mlx5e_add(struct mlx5_core_dev *mdev)
 	return ret;
 }
 
-static void mlx5e_destroy_netdev(struct mlx5_core_dev *mdev,
-				 struct mlx5e_priv *priv)
+static void mlx5e_destroy_netdev(struct mlx5_core_dev *mdev, struct mlx5e_priv *priv)
 {
+	const struct mlx5e_profile *profile = priv->profile;
 	struct net_device *netdev = priv->netdev;
 
 	set_bit(MLX5E_STATE_DESTROYING, &priv->state);
+	if (profile->disable)
+		profile->disable(priv);
 
-	queue_work(priv->wq, &priv->set_rx_mode_work);
-	mlx5e_disable_async_events(priv);
 	flush_workqueue(priv->wq);
 	if (test_bit(MLX5_INTERFACE_STATE_SHUTDOWN, &mdev->intf_state)) {
 		netif_device_detach(netdev);
@@ -3271,17 +3378,15 @@ static void mlx5e_destroy_netdev(struct mlx5_core_dev *mdev,
 		unregister_netdev(netdev);
 	}
 
-	mlx5e_tc_cleanup(priv);
-	mlx5e_vxlan_cleanup(priv);
 	mlx5e_destroy_q_counter(priv);
-	mlx5e_destroy_flow_steering(priv);
-	mlx5e_destroy_tirs(priv);
-	mlx5e_destroy_rqts(priv);
+	profile->cleanup_rx(priv);
 	mlx5e_close_drop_rq(priv);
-	mlx5e_destroy_tises(priv);
+	profile->cleanup_tx(priv);
 	mlx5_core_destroy_mkey(priv->mdev, &priv->umr_mkey);
 	cancel_delayed_work_sync(&priv->update_stats_work);
 	destroy_workqueue(priv->wq);
+	if (profile->cleanup)
+		profile->cleanup(priv);
 
 	if (!test_bit(MLX5_INTERFACE_STATE_SHUTDOWN, &mdev->intf_state))
 		free_netdev(netdev);