Commit fcac753b authored by Tariq Toukan's avatar Tariq Toukan Committed by Greg Kroah-Hartman

net/mlx5e: Correctly handle RSS indirection table when changing number of channels

[ Upstream commit 85082dba ]

Upon changing num_channels, reset the RSS indirection table to
match the new value.

Fixes: 2d75b2bc ('net/mlx5e: Add ethtool RSS configuration options')
Signed-off-by: 's avatarTariq Toukan <tariqt@mellanox.com>
Signed-off-by: 's avatarSaeed Mahameed <saeedm@mellanox.com>
Signed-off-by: 's avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: 's avatarSasha Levin <sashal@kernel.org>
parent 40e9abaa
......@@ -586,6 +586,8 @@ int mlx5e_redirect_rqt(struct mlx5e_priv *priv, enum mlx5e_rqt_ix rqt_ix);
int mlx5e_open_locked(struct net_device *netdev);
int mlx5e_close_locked(struct net_device *netdev);
void mlx5e_build_default_indir_rqt(u32 *indirection_rqt, int len,
int num_channels);
static inline void mlx5e_tx_notify_hw(struct mlx5e_sq *sq,
struct mlx5e_tx_wqe *wqe, int bf_sz)
......
......@@ -385,6 +385,8 @@ static int mlx5e_set_channels(struct net_device *dev,
mlx5e_close_locked(dev);
priv->params.num_channels = count;
mlx5e_build_default_indir_rqt(priv->params.indirection_rqt,
MLX5E_INDIR_RQT_SIZE, count);
if (was_opened)
err = mlx5e_open_locked(dev);
......
......@@ -1186,7 +1186,6 @@ static void mlx5e_fill_indir_rqt_rqns(struct mlx5e_priv *priv, void *rqtc)
ix = mlx5e_bits_invert(i, MLX5E_LOG_INDIR_RQT_SIZE);
ix = priv->params.indirection_rqt[ix];
ix = ix % priv->params.num_channels;
MLX5_SET(rqtc, rqtc, rq_num[i],
test_bit(MLX5E_STATE_OPENED, &priv->state) ?
priv->channel[ix]->rq.rqn :
......@@ -1983,12 +1982,20 @@ u16 mlx5e_get_max_inline_cap(struct mlx5_core_dev *mdev)
2 /*sizeof(mlx5e_tx_wqe.inline_hdr_start)*/;
}
void mlx5e_build_default_indir_rqt(u32 *indirection_rqt, int len,
int num_channels)
{
int i;
for (i = 0; i < len; i++)
indirection_rqt[i] = i % num_channels;
}
static void mlx5e_build_netdev_priv(struct mlx5_core_dev *mdev,
struct net_device *netdev,
int num_channels)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
int i;
priv->params.log_sq_size =
MLX5E_PARAMS_DEFAULT_LOG_SQ_SIZE;
......@@ -2012,8 +2019,8 @@ static void mlx5e_build_netdev_priv(struct mlx5_core_dev *mdev,
netdev_rss_key_fill(priv->params.toeplitz_hash_key,
sizeof(priv->params.toeplitz_hash_key));
for (i = 0; i < MLX5E_INDIR_RQT_SIZE; i++)
priv->params.indirection_rqt[i] = i % num_channels;
mlx5e_build_default_indir_rqt(priv->params.indirection_rqt,
MLX5E_INDIR_RQT_SIZE, num_channels);
priv->params.lro_wqe_sz =
MLX5E_PARAMS_DEFAULT_LRO_WQE_SZ;
......
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