From: Saeed Mahameed <saeed@kernel.org>
To: Jakub Kicinski <kuba@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>,
netdev@vger.kernel.org, Saeed Mahameed <saeedm@nvidia.com>,
Roi Dayan <roid@nvidia.com>
Subject: [net-next 02/14] net/mxl5e: Add change profile method
Date: Mon, 1 Feb 2021 22:54:45 -0800 [thread overview]
Message-ID: <20210202065457.613312-3-saeed@kernel.org> (raw)
In-Reply-To: <20210202065457.613312-1-saeed@kernel.org>
From: Saeed Mahameed <saeedm@nvidia.com>
Port nic netdevice will be used as uplink representor in downstream
patches. Add change profile method to allow changing a mlx5e netdevice
profile dynamically.
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>
---
drivers/net/ethernet/mellanox/mlx5/core/en.h | 7 +-
.../net/ethernet/mellanox/mlx5/core/en_main.c | 68 ++++++++++++++++++-
.../net/ethernet/mellanox/mlx5/core/en_rep.c | 2 +-
3 files changed, 73 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h
index bf5de1e79134..fa461cfd6410 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h
@@ -1154,9 +1154,10 @@ int mlx5e_ethtool_set_pauseparam(struct mlx5e_priv *priv,
struct ethtool_pauseparam *pauseparam);
/* mlx5e generic netdev management API */
-static inline unsigned int mlx5e_calc_max_nch(struct mlx5e_priv *priv)
+static inline unsigned int
+mlx5e_calc_max_nch(struct mlx5e_priv *priv, const struct mlx5e_profile *profile)
{
- return priv->netdev->num_rx_queues / max_t(u8, priv->profile->rq_groups, 1);
+ return priv->netdev->num_rx_queues / max_t(u8, profile->rq_groups, 1);
}
int mlx5e_netdev_init(struct net_device *netdev,
@@ -1168,6 +1169,8 @@ mlx5e_create_netdev(struct mlx5_core_dev *mdev, unsigned int txqs, unsigned int
int mlx5e_attach_netdev(struct mlx5e_priv *priv);
void mlx5e_detach_netdev(struct mlx5e_priv *priv);
void mlx5e_destroy_netdev(struct mlx5e_priv *priv);
+int mlx5e_netdev_change_profile(struct mlx5e_priv *priv,
+ const struct mlx5e_profile *new_profile, void *new_ppriv);
void mlx5e_set_netdev_mtu_boundaries(struct mlx5e_priv *priv);
void mlx5e_build_nic_params(struct mlx5e_priv *priv, struct mlx5e_xsk *xsk, u16 mtu);
void mlx5e_build_rq_params(struct mlx5_core_dev *mdev,
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 260ced27014d..91f23871ded5 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -4936,7 +4936,7 @@ void mlx5e_build_nic_params(struct mlx5e_priv *priv, struct mlx5e_xsk *xsk, u16
struct mlx5_core_dev *mdev = priv->mdev;
u8 rx_cq_period_mode;
- priv->max_nch = mlx5e_calc_max_nch(priv);
+ priv->max_nch = mlx5e_calc_max_nch(priv, priv->profile);
params->sw_mtu = mtu;
params->hard_mtu = MLX5E_ETH_HARD_MTU;
@@ -5461,6 +5461,8 @@ int mlx5e_netdev_init(struct net_device *netdev,
struct mlx5e_priv *priv,
struct mlx5_core_dev *mdev)
{
+ memset(priv, 0, sizeof(*priv));
+
/* priv init */
priv->mdev = mdev;
priv->netdev = netdev;
@@ -5615,6 +5617,70 @@ void mlx5e_detach_netdev(struct mlx5e_priv *priv)
cancel_work_sync(&priv->update_stats_work);
}
+static int
+mlx5e_netdev_attach_profile(struct mlx5e_priv *priv,
+ const struct mlx5e_profile *new_profile, void *new_ppriv)
+{
+ struct net_device *netdev = priv->netdev;
+ struct mlx5_core_dev *mdev = priv->mdev;
+ int err;
+
+ err = mlx5e_netdev_init(netdev, priv, mdev);
+ if (err) {
+ mlx5_core_err(mdev, "mlx5e_netdev_init failed, err=%d\n", err);
+ return err;
+ }
+ priv->profile = new_profile;
+ priv->ppriv = new_ppriv;
+ err = new_profile->init(priv->mdev, priv->netdev);
+ if (err)
+ return err;
+ err = mlx5e_attach_netdev(priv);
+ if (err)
+ new_profile->cleanup(priv);
+ return err;
+}
+
+int mlx5e_netdev_change_profile(struct mlx5e_priv *priv,
+ const struct mlx5e_profile *new_profile, void *new_ppriv)
+{
+ unsigned int new_max_nch = mlx5e_calc_max_nch(priv, new_profile);
+ const struct mlx5e_profile *orig_profile = priv->profile;
+ void *orig_ppriv = priv->ppriv;
+ int err, rollback_err;
+
+ /* sanity */
+ if (new_max_nch != priv->max_nch) {
+ netdev_warn(priv->netdev,
+ "%s: Replacing profile with different max channles\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ /* cleanup old profile */
+ mlx5e_detach_netdev(priv);
+ priv->profile->cleanup(priv);
+ mlx5e_netdev_cleanup(priv->netdev, priv);
+
+ err = mlx5e_netdev_attach_profile(priv, new_profile, new_ppriv);
+ if (err) { /* roll back to original profile */
+ netdev_warn(priv->netdev, "%s: new profile init failed, %d\n",
+ __func__, err);
+ goto rollback;
+ }
+
+ return 0;
+
+rollback:
+ rollback_err = mlx5e_netdev_attach_profile(priv, orig_profile, orig_ppriv);
+ if (rollback_err) {
+ netdev_err(priv->netdev,
+ "%s: failed to rollback to orig profile, %d\n",
+ __func__, rollback_err);
+ }
+ return err;
+}
+
void mlx5e_destroy_netdev(struct mlx5e_priv *priv)
{
struct net_device *netdev = priv->netdev;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
index d94d2ff9d312..c8a0f4c88d4b 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
@@ -684,7 +684,7 @@ static void mlx5e_build_rep_params(struct net_device *netdev)
MLX5_CQ_PERIOD_MODE_START_FROM_CQE :
MLX5_CQ_PERIOD_MODE_START_FROM_EQE;
- priv->max_nch = mlx5e_calc_max_nch(priv);
+ priv->max_nch = mlx5e_calc_max_nch(priv, priv->profile);
params = &priv->channels.params;
params->num_channels = MLX5E_REP_PARAMS_DEF_NUM_CHANNELS;
--
2.29.2
next prev parent reply other threads:[~2021-02-02 6:56 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-02 6:54 [pull request][net-next 00/14] mlx5 updates 2021-02-01 Saeed Mahameed
2021-02-02 6:54 ` [net-next 01/14] net/mlx5e: Separate between netdev objects and mlx5e profiles initialization Saeed Mahameed
2021-02-03 3:10 ` patchwork-bot+netdevbpf
2021-02-02 6:54 ` Saeed Mahameed [this message]
2021-02-02 6:54 ` [net-next 03/14] net/mlx5e: Refactor mlx5e_netdev_init/cleanup to mlx5e_priv_init/cleanup Saeed Mahameed
2021-02-02 6:54 ` [net-next 04/14] net/mlx5e: Move netif_carrier_off() out of mlx5e_priv_init() Saeed Mahameed
2021-02-02 6:54 ` [net-next 05/14] net/mlx5e: Move set vxlan nic info to profile init Saeed Mahameed
2021-02-02 6:54 ` [net-next 06/14] net/mlx5e: Avoid false lock depenency warning on tc_ht Saeed Mahameed
2021-02-02 6:54 ` [net-next 07/14] net/mlx5e: Move representor neigh init into profile enable Saeed Mahameed
2021-02-02 6:54 ` [net-next 08/14] net/mlx5e: Enable napi in channel's activation stage Saeed Mahameed
2021-02-02 6:54 ` [net-next 09/14] net/mlx5e: Increase indirection RQ table size to 256 Saeed Mahameed
2021-02-02 6:54 ` [net-next 10/14] net/mlx5e: remove h from printk format specifier Saeed Mahameed
2021-02-02 6:54 ` [net-next 11/14] net/mlx5e: kTLS, Improve TLS RX workqueue scope Saeed Mahameed
2021-02-02 6:54 ` [net-next 12/14] net/mlx5e: accel, remove redundant space Saeed Mahameed
2021-02-02 6:54 ` [net-next 13/14] net/mlx5e: CT: remove useless conversion to PTR_ERR then ERR_PTR Saeed Mahameed
2021-02-02 6:54 ` [net-next 14/14] net/mlx5: DR, Avoid unnecessary csum recalculation on supporting devices Saeed Mahameed
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