/* * Copyright (c) 2017, Mellanox Technologies. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE.
*/
/* rtnl lock protects from race between this ethtool op and sub * interface ndo_init/uninit.
*/
ASSERT_RTNL(); if (ipriv->num_sub_interfaces > 0) {
mlx5_core_warn(epriv->mdev, "can't change number of channels for interfaces with sub interfaces (%u)\n",
ipriv->num_sub_interfaces); return -EINVAL;
}
/* ETHTOOL_GRXRINGS is needed by ethtool -x which is not part * of rxnfc. We keep this logic out of mlx5e_ethtool_get_rxnfc, * to avoid breaking "ethtool -x" when mlx5e_ethtool_get_rxnfc * is compiled out via CONFIG_MLX5_EN_RXNFC=n.
*/ if (info->cmd == ETHTOOL_GRXRINGS) {
info->data = priv->channels.params.num_channels; return 0;
}
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