Commit 411d9d33 authored by Raed Salem's avatar Raed Salem Committed by Paolo Abeni
Browse files

net/mlx5e: Implement PSP key_rotate operation 



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: default avatarRaed Salem <raeds@nvidia.com>
Signed-off-by: default avatarRahul Rameshbabu <rrameshbabu@nvidia.com>
Signed-off-by: default avatarCosmin Ratiu <cratiu@nvidia.com>
Signed-off-by: default avatarDaniel Zahka <daniel.zahka@gmail.com>
Link: https://patch.msgid.link/20250917000954.859376-20-daniel.zahka@gmail.com


Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
parent 29d7f433

drivers/net/ethernet/mellanox/mlx5/core/en_accel/psp.c

+23 −0
Original line number Diff line number Diff line
@@ -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)