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net/mlx5e: Implement PSP key_rotate operation

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Implement .key_rotate operation where when invoked will cause the HW to use
a new master key to derive PSP spi/key pairs with complience with PSP spec.

Signed-off-by: Raed Salem <raeds@nvidia.com>
Signed-off-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Signed-off-by: Cosmin Ratiu <cratiu@nvidia.com>
Signed-off-by: Daniel Zahka <daniel.zahka@gmail.com>
Link: https://patch.msgid.link/20250917000954.859376-20-daniel.zahka@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Raed Salem
2025-09-16 17:09:46 -07:00
committed by Paolo Abeni
parent 29d7f433fc
commit 411d9d33c8
1 changed files with 23 additions and 0 deletions
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23
drivers/net/ethernet/mellanox/mlx5/core/en_accel/psp.c
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@@ -827,11 +827,34 @@ static void mlx5e_psp_assoc_del(struct psp_dev *psd, struct psp_assoc *pas)
atomic_dec(&psp->tx_key_cnt);
}
static int mlx5e_psp_rotate_key(struct mlx5_core_dev *mdev)
{
u32 in[MLX5_ST_SZ_DW(psp_rotate_key_in)] = {};
u32 out[MLX5_ST_SZ_DW(psp_rotate_key_out)];
MLX5_SET(psp_rotate_key_in, in, opcode,
MLX5_CMD_OP_PSP_ROTATE_KEY);
return mlx5_cmd_exec(mdev, in, sizeof(in), out, sizeof(out));
}
static int
mlx5e_psp_key_rotate(struct psp_dev *psd, struct netlink_ext_ack *exack)
{
struct mlx5e_priv *priv = netdev_priv(psd->main_netdev);
/* no support for protecting against external rotations */
psd->generation = 0;
return mlx5e_psp_rotate_key(priv->mdev);
}
static struct psp_dev_ops mlx5_psp_ops = {
.set_config = mlx5e_psp_set_config,
.rx_spi_alloc = mlx5e_psp_rx_spi_alloc,
.tx_key_add = mlx5e_psp_assoc_add,
.tx_key_del = mlx5e_psp_assoc_del,
.key_rotate = mlx5e_psp_key_rotate,
};
void mlx5e_psp_unregister(struct mlx5e_priv *priv)