752 lines
20 KiB
C
752 lines
20 KiB
C
/*
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* Copyright (c) 2017, Mellanox Technologies. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <rdma/ib_verbs.h>
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#include <linux/mlx5/fs.h>
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#include "en.h"
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#include "ipoib.h"
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#define IB_DEFAULT_Q_KEY 0xb1b
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#define MLX5I_PARAMS_DEFAULT_LOG_RQ_SIZE 9
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static int mlx5i_open(struct net_device *netdev);
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static int mlx5i_close(struct net_device *netdev);
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static int mlx5i_change_mtu(struct net_device *netdev, int new_mtu);
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static const struct net_device_ops mlx5i_netdev_ops = {
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.ndo_open = mlx5i_open,
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.ndo_stop = mlx5i_close,
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.ndo_get_stats64 = mlx5i_get_stats,
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.ndo_init = mlx5i_dev_init,
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.ndo_uninit = mlx5i_dev_cleanup,
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.ndo_change_mtu = mlx5i_change_mtu,
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.ndo_do_ioctl = mlx5i_ioctl,
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};
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/* IPoIB mlx5 netdev profile */
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static void mlx5i_build_nic_params(struct mlx5_core_dev *mdev,
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struct mlx5e_params *params)
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{
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/* Override RQ params as IPoIB supports only LINKED LIST RQ for now */
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MLX5E_SET_PFLAG(params, MLX5E_PFLAG_RX_STRIDING_RQ, false);
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mlx5e_set_rq_type(mdev, params);
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mlx5e_init_rq_type_params(mdev, params);
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/* RQ size in ipoib by default is 512 */
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params->log_rq_mtu_frames = is_kdump_kernel() ?
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MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE :
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MLX5I_PARAMS_DEFAULT_LOG_RQ_SIZE;
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params->lro_en = false;
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params->hard_mtu = MLX5_IB_GRH_BYTES + MLX5_IPOIB_HARD_LEN;
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params->tunneled_offload_en = false;
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}
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/* Called directly after IPoIB netdevice was created to initialize SW structs */
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int mlx5i_init(struct mlx5_core_dev *mdev,
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struct net_device *netdev,
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const struct mlx5e_profile *profile,
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void *ppriv)
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{
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struct mlx5e_priv *priv = mlx5i_epriv(netdev);
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int err;
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err = mlx5e_netdev_init(netdev, priv, mdev, profile, ppriv);
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if (err)
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return err;
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mlx5e_set_netdev_mtu_boundaries(priv);
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netdev->mtu = netdev->max_mtu;
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mlx5e_build_nic_params(mdev, NULL, &priv->rss_params, &priv->channels.params,
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priv->max_nch, netdev->mtu);
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mlx5i_build_nic_params(mdev, &priv->channels.params);
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mlx5e_timestamp_init(priv);
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/* netdev init */
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netdev->hw_features |= NETIF_F_SG;
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netdev->hw_features |= NETIF_F_IP_CSUM;
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netdev->hw_features |= NETIF_F_IPV6_CSUM;
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netdev->hw_features |= NETIF_F_GRO;
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netdev->hw_features |= NETIF_F_TSO;
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netdev->hw_features |= NETIF_F_TSO6;
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netdev->hw_features |= NETIF_F_RXCSUM;
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netdev->hw_features |= NETIF_F_RXHASH;
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netdev->netdev_ops = &mlx5i_netdev_ops;
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netdev->ethtool_ops = &mlx5i_ethtool_ops;
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return 0;
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}
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/* Called directly before IPoIB netdevice is destroyed to cleanup SW structs */
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void mlx5i_cleanup(struct mlx5e_priv *priv)
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{
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mlx5e_netdev_cleanup(priv->netdev, priv);
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}
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static void mlx5i_grp_sw_update_stats(struct mlx5e_priv *priv)
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{
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struct mlx5e_sw_stats s = { 0 };
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int i, j;
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for (i = 0; i < priv->max_nch; i++) {
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struct mlx5e_channel_stats *channel_stats;
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struct mlx5e_rq_stats *rq_stats;
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channel_stats = &priv->channel_stats[i];
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rq_stats = &channel_stats->rq;
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s.rx_packets += rq_stats->packets;
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s.rx_bytes += rq_stats->bytes;
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for (j = 0; j < priv->max_opened_tc; j++) {
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struct mlx5e_sq_stats *sq_stats = &channel_stats->sq[j];
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s.tx_packets += sq_stats->packets;
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s.tx_bytes += sq_stats->bytes;
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s.tx_queue_dropped += sq_stats->dropped;
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}
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}
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memcpy(&priv->stats.sw, &s, sizeof(s));
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}
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void mlx5i_get_stats(struct net_device *dev, struct rtnl_link_stats64 *stats)
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{
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struct mlx5e_priv *priv = mlx5i_epriv(dev);
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struct mlx5e_sw_stats *sstats = &priv->stats.sw;
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mlx5i_grp_sw_update_stats(priv);
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stats->rx_packets = sstats->rx_packets;
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stats->rx_bytes = sstats->rx_bytes;
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stats->tx_packets = sstats->tx_packets;
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stats->tx_bytes = sstats->tx_bytes;
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stats->tx_dropped = sstats->tx_queue_dropped;
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}
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int mlx5i_init_underlay_qp(struct mlx5e_priv *priv)
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{
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struct mlx5_core_dev *mdev = priv->mdev;
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struct mlx5i_priv *ipriv = priv->ppriv;
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struct mlx5_core_qp *qp = &ipriv->qp;
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struct mlx5_qp_context *context;
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int ret;
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/* QP states */
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context = kzalloc(sizeof(*context), GFP_KERNEL);
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if (!context)
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return -ENOMEM;
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context->flags = cpu_to_be32(MLX5_QP_PM_MIGRATED << 11);
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context->pri_path.port = 1;
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context->pri_path.pkey_index = cpu_to_be16(ipriv->pkey_index);
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context->qkey = cpu_to_be32(IB_DEFAULT_Q_KEY);
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ret = mlx5_core_qp_modify(mdev, MLX5_CMD_OP_RST2INIT_QP, 0, context, qp);
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if (ret) {
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mlx5_core_err(mdev, "Failed to modify qp RST2INIT, err: %d\n", ret);
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goto err_qp_modify_to_err;
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}
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memset(context, 0, sizeof(*context));
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ret = mlx5_core_qp_modify(mdev, MLX5_CMD_OP_INIT2RTR_QP, 0, context, qp);
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if (ret) {
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mlx5_core_err(mdev, "Failed to modify qp INIT2RTR, err: %d\n", ret);
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goto err_qp_modify_to_err;
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}
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ret = mlx5_core_qp_modify(mdev, MLX5_CMD_OP_RTR2RTS_QP, 0, context, qp);
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if (ret) {
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mlx5_core_err(mdev, "Failed to modify qp RTR2RTS, err: %d\n", ret);
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goto err_qp_modify_to_err;
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}
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kfree(context);
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return 0;
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err_qp_modify_to_err:
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mlx5_core_qp_modify(mdev, MLX5_CMD_OP_2ERR_QP, 0, &context, qp);
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kfree(context);
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return ret;
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}
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void mlx5i_uninit_underlay_qp(struct mlx5e_priv *priv)
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{
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struct mlx5i_priv *ipriv = priv->ppriv;
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struct mlx5_core_dev *mdev = priv->mdev;
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struct mlx5_qp_context context;
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int err;
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err = mlx5_core_qp_modify(mdev, MLX5_CMD_OP_2RST_QP, 0, &context,
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&ipriv->qp);
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if (err)
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mlx5_core_err(mdev, "Failed to modify qp 2RST, err: %d\n", err);
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}
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#define MLX5_QP_ENHANCED_ULP_STATELESS_MODE 2
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int mlx5i_create_underlay_qp(struct mlx5_core_dev *mdev, struct mlx5_core_qp *qp)
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{
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u32 *in = NULL;
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void *addr_path;
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int ret = 0;
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int inlen;
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void *qpc;
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inlen = MLX5_ST_SZ_BYTES(create_qp_in);
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in = kvzalloc(inlen, GFP_KERNEL);
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if (!in)
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return -ENOMEM;
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qpc = MLX5_ADDR_OF(create_qp_in, in, qpc);
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MLX5_SET(qpc, qpc, st, MLX5_QP_ST_UD);
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MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED);
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MLX5_SET(qpc, qpc, ulp_stateless_offload_mode,
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MLX5_QP_ENHANCED_ULP_STATELESS_MODE);
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addr_path = MLX5_ADDR_OF(qpc, qpc, primary_address_path);
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MLX5_SET(ads, addr_path, vhca_port_num, 1);
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MLX5_SET(ads, addr_path, grh, 1);
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ret = mlx5_core_create_qp(mdev, qp, in, inlen);
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if (ret) {
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mlx5_core_err(mdev, "Failed creating IPoIB QP err : %d\n", ret);
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goto out;
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}
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out:
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kvfree(in);
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return ret;
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}
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void mlx5i_destroy_underlay_qp(struct mlx5_core_dev *mdev, struct mlx5_core_qp *qp)
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{
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mlx5_core_destroy_qp(mdev, qp);
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}
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int mlx5i_create_tis(struct mlx5_core_dev *mdev, u32 underlay_qpn, u32 *tisn)
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{
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u32 in[MLX5_ST_SZ_DW(create_tis_in)] = {};
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void *tisc;
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tisc = MLX5_ADDR_OF(create_tis_in, in, ctx);
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MLX5_SET(tisc, tisc, underlay_qpn, underlay_qpn);
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return mlx5e_create_tis(mdev, in, tisn);
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}
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static int mlx5i_init_tx(struct mlx5e_priv *priv)
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{
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struct mlx5i_priv *ipriv = priv->ppriv;
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int err;
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err = mlx5i_create_underlay_qp(priv->mdev, &ipriv->qp);
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if (err) {
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mlx5_core_warn(priv->mdev, "create underlay QP failed, %d\n", err);
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return err;
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}
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err = mlx5i_create_tis(priv->mdev, ipriv->qp.qpn, &priv->tisn[0][0]);
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if (err) {
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mlx5_core_warn(priv->mdev, "create tis failed, %d\n", err);
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goto err_destroy_underlay_qp;
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}
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return 0;
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err_destroy_underlay_qp:
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mlx5i_destroy_underlay_qp(priv->mdev, &ipriv->qp);
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return err;
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}
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static void mlx5i_cleanup_tx(struct mlx5e_priv *priv)
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{
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struct mlx5i_priv *ipriv = priv->ppriv;
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mlx5e_destroy_tis(priv->mdev, priv->tisn[0][0]);
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mlx5i_destroy_underlay_qp(priv->mdev, &ipriv->qp);
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}
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static int mlx5i_create_flow_steering(struct mlx5e_priv *priv)
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{
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struct ttc_params ttc_params = {};
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int tt, err;
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priv->fs.ns = mlx5_get_flow_namespace(priv->mdev,
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MLX5_FLOW_NAMESPACE_KERNEL);
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if (!priv->fs.ns)
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return -EINVAL;
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err = mlx5e_arfs_create_tables(priv);
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if (err) {
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netdev_err(priv->netdev, "Failed to create arfs tables, err=%d\n",
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err);
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priv->netdev->hw_features &= ~NETIF_F_NTUPLE;
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}
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mlx5e_set_ttc_basic_params(priv, &ttc_params);
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mlx5e_set_ttc_ft_params(&ttc_params);
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for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++)
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ttc_params.indir_tirn[tt] = priv->indir_tir[tt].tirn;
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err = mlx5e_create_ttc_table(priv, &ttc_params, &priv->fs.ttc);
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if (err) {
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netdev_err(priv->netdev, "Failed to create ttc table, err=%d\n",
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err);
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goto err_destroy_arfs_tables;
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}
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return 0;
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err_destroy_arfs_tables:
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mlx5e_arfs_destroy_tables(priv);
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return err;
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}
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static void mlx5i_destroy_flow_steering(struct mlx5e_priv *priv)
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{
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mlx5e_destroy_ttc_table(priv, &priv->fs.ttc);
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mlx5e_arfs_destroy_tables(priv);
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}
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static int mlx5i_init_rx(struct mlx5e_priv *priv)
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{
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struct mlx5_core_dev *mdev = priv->mdev;
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int err;
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mlx5e_create_q_counters(priv);
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err = mlx5e_open_drop_rq(priv, &priv->drop_rq);
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if (err) {
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mlx5_core_err(mdev, "open drop rq failed, %d\n", err);
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goto err_destroy_q_counters;
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}
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err = mlx5e_create_indirect_rqt(priv);
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if (err)
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goto err_close_drop_rq;
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err = mlx5e_create_direct_rqts(priv, priv->direct_tir);
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if (err)
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goto err_destroy_indirect_rqts;
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err = mlx5e_create_indirect_tirs(priv, false);
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if (err)
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goto err_destroy_direct_rqts;
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err = mlx5e_create_direct_tirs(priv, priv->direct_tir);
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if (err)
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goto err_destroy_indirect_tirs;
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err = mlx5i_create_flow_steering(priv);
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if (err)
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goto err_destroy_direct_tirs;
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return 0;
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err_destroy_direct_tirs:
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mlx5e_destroy_direct_tirs(priv, priv->direct_tir);
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err_destroy_indirect_tirs:
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mlx5e_destroy_indirect_tirs(priv);
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err_destroy_direct_rqts:
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mlx5e_destroy_direct_rqts(priv, priv->direct_tir);
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err_destroy_indirect_rqts:
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mlx5e_destroy_rqt(priv, &priv->indir_rqt);
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err_close_drop_rq:
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mlx5e_close_drop_rq(&priv->drop_rq);
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err_destroy_q_counters:
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mlx5e_destroy_q_counters(priv);
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return err;
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}
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static void mlx5i_cleanup_rx(struct mlx5e_priv *priv)
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{
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mlx5i_destroy_flow_steering(priv);
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mlx5e_destroy_direct_tirs(priv, priv->direct_tir);
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mlx5e_destroy_indirect_tirs(priv);
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mlx5e_destroy_direct_rqts(priv, priv->direct_tir);
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mlx5e_destroy_rqt(priv, &priv->indir_rqt);
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mlx5e_close_drop_rq(&priv->drop_rq);
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mlx5e_destroy_q_counters(priv);
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}
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static const struct mlx5e_profile mlx5i_nic_profile = {
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.init = mlx5i_init,
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.cleanup = mlx5i_cleanup,
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.init_tx = mlx5i_init_tx,
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.cleanup_tx = mlx5i_cleanup_tx,
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.init_rx = mlx5i_init_rx,
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.cleanup_rx = mlx5i_cleanup_rx,
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.enable = NULL, /* mlx5i_enable */
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.disable = NULL, /* mlx5i_disable */
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.update_rx = mlx5e_update_nic_rx,
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.update_stats = NULL, /* mlx5i_update_stats */
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.update_carrier = NULL, /* no HW update in IB link */
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.rx_handlers.handle_rx_cqe = mlx5i_handle_rx_cqe,
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.rx_handlers.handle_rx_cqe_mpwqe = NULL, /* Not supported */
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.max_tc = MLX5I_MAX_NUM_TC,
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.rq_groups = MLX5E_NUM_RQ_GROUPS(REGULAR),
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};
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/* mlx5i netdev NDos */
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static int mlx5i_change_mtu(struct net_device *netdev, int new_mtu)
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{
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struct mlx5e_priv *priv = mlx5i_epriv(netdev);
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struct mlx5e_channels new_channels = {};
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struct mlx5e_params *params;
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int err = 0;
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mutex_lock(&priv->state_lock);
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params = &priv->channels.params;
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if (!test_bit(MLX5E_STATE_OPENED, &priv->state)) {
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params->sw_mtu = new_mtu;
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netdev->mtu = params->sw_mtu;
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goto out;
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}
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new_channels.params = *params;
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new_channels.params.sw_mtu = new_mtu;
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err = mlx5e_safe_switch_channels(priv, &new_channels, NULL);
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if (err)
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goto out;
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netdev->mtu = new_channels.params.sw_mtu;
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|
out:
|
|
mutex_unlock(&priv->state_lock);
|
|
return err;
|
|
}
|
|
|
|
int mlx5i_dev_init(struct net_device *dev)
|
|
{
|
|
struct mlx5e_priv *priv = mlx5i_epriv(dev);
|
|
struct mlx5i_priv *ipriv = priv->ppriv;
|
|
|
|
/* Set dev address using underlay QP */
|
|
dev->dev_addr[1] = (ipriv->qp.qpn >> 16) & 0xff;
|
|
dev->dev_addr[2] = (ipriv->qp.qpn >> 8) & 0xff;
|
|
dev->dev_addr[3] = (ipriv->qp.qpn) & 0xff;
|
|
|
|
/* Add QPN to net-device mapping to HT */
|
|
mlx5i_pkey_add_qpn(dev ,ipriv->qp.qpn);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int mlx5i_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
|
|
{
|
|
struct mlx5e_priv *priv = mlx5i_epriv(dev);
|
|
|
|
switch (cmd) {
|
|
case SIOCSHWTSTAMP:
|
|
return mlx5e_hwstamp_set(priv, ifr);
|
|
case SIOCGHWTSTAMP:
|
|
return mlx5e_hwstamp_get(priv, ifr);
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
}
|
|
|
|
void mlx5i_dev_cleanup(struct net_device *dev)
|
|
{
|
|
struct mlx5e_priv *priv = mlx5i_epriv(dev);
|
|
struct mlx5i_priv *ipriv = priv->ppriv;
|
|
|
|
mlx5i_uninit_underlay_qp(priv);
|
|
|
|
/* Delete QPN to net-device mapping from HT */
|
|
mlx5i_pkey_del_qpn(dev, ipriv->qp.qpn);
|
|
}
|
|
|
|
static int mlx5i_open(struct net_device *netdev)
|
|
{
|
|
struct mlx5e_priv *epriv = mlx5i_epriv(netdev);
|
|
struct mlx5i_priv *ipriv = epriv->ppriv;
|
|
struct mlx5_core_dev *mdev = epriv->mdev;
|
|
int err;
|
|
|
|
mutex_lock(&epriv->state_lock);
|
|
|
|
set_bit(MLX5E_STATE_OPENED, &epriv->state);
|
|
|
|
err = mlx5i_init_underlay_qp(epriv);
|
|
if (err) {
|
|
mlx5_core_warn(mdev, "prepare underlay qp state failed, %d\n", err);
|
|
goto err_clear_state_opened_flag;
|
|
}
|
|
|
|
err = mlx5_fs_add_rx_underlay_qpn(mdev, ipriv->qp.qpn);
|
|
if (err) {
|
|
mlx5_core_warn(mdev, "attach underlay qp to ft failed, %d\n", err);
|
|
goto err_reset_qp;
|
|
}
|
|
|
|
err = mlx5e_open_channels(epriv, &epriv->channels);
|
|
if (err)
|
|
goto err_remove_fs_underlay_qp;
|
|
|
|
epriv->profile->update_rx(epriv);
|
|
mlx5e_activate_priv_channels(epriv);
|
|
|
|
mutex_unlock(&epriv->state_lock);
|
|
return 0;
|
|
|
|
err_remove_fs_underlay_qp:
|
|
mlx5_fs_remove_rx_underlay_qpn(mdev, ipriv->qp.qpn);
|
|
err_reset_qp:
|
|
mlx5i_uninit_underlay_qp(epriv);
|
|
err_clear_state_opened_flag:
|
|
clear_bit(MLX5E_STATE_OPENED, &epriv->state);
|
|
mutex_unlock(&epriv->state_lock);
|
|
return err;
|
|
}
|
|
|
|
static int mlx5i_close(struct net_device *netdev)
|
|
{
|
|
struct mlx5e_priv *epriv = mlx5i_epriv(netdev);
|
|
struct mlx5i_priv *ipriv = epriv->ppriv;
|
|
struct mlx5_core_dev *mdev = epriv->mdev;
|
|
|
|
/* May already be CLOSED in case a previous configuration operation
|
|
* (e.g RX/TX queue size change) that involves close&open failed.
|
|
*/
|
|
mutex_lock(&epriv->state_lock);
|
|
|
|
if (!test_bit(MLX5E_STATE_OPENED, &epriv->state))
|
|
goto unlock;
|
|
|
|
clear_bit(MLX5E_STATE_OPENED, &epriv->state);
|
|
|
|
netif_carrier_off(epriv->netdev);
|
|
mlx5_fs_remove_rx_underlay_qpn(mdev, ipriv->qp.qpn);
|
|
mlx5e_deactivate_priv_channels(epriv);
|
|
mlx5e_close_channels(&epriv->channels);
|
|
mlx5i_uninit_underlay_qp(epriv);
|
|
unlock:
|
|
mutex_unlock(&epriv->state_lock);
|
|
return 0;
|
|
}
|
|
|
|
/* IPoIB RDMA netdev callbacks */
|
|
static int mlx5i_attach_mcast(struct net_device *netdev, struct ib_device *hca,
|
|
union ib_gid *gid, u16 lid, int set_qkey,
|
|
u32 qkey)
|
|
{
|
|
struct mlx5e_priv *epriv = mlx5i_epriv(netdev);
|
|
struct mlx5_core_dev *mdev = epriv->mdev;
|
|
struct mlx5i_priv *ipriv = epriv->ppriv;
|
|
int err;
|
|
|
|
mlx5_core_dbg(mdev, "attaching QPN 0x%x, MGID %pI6\n", ipriv->qp.qpn, gid->raw);
|
|
err = mlx5_core_attach_mcg(mdev, gid, ipriv->qp.qpn);
|
|
if (err)
|
|
mlx5_core_warn(mdev, "failed attaching QPN 0x%x, MGID %pI6\n",
|
|
ipriv->qp.qpn, gid->raw);
|
|
|
|
if (set_qkey) {
|
|
mlx5_core_dbg(mdev, "%s setting qkey 0x%x\n",
|
|
netdev->name, qkey);
|
|
ipriv->qkey = qkey;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int mlx5i_detach_mcast(struct net_device *netdev, struct ib_device *hca,
|
|
union ib_gid *gid, u16 lid)
|
|
{
|
|
struct mlx5e_priv *epriv = mlx5i_epriv(netdev);
|
|
struct mlx5_core_dev *mdev = epriv->mdev;
|
|
struct mlx5i_priv *ipriv = epriv->ppriv;
|
|
int err;
|
|
|
|
mlx5_core_dbg(mdev, "detaching QPN 0x%x, MGID %pI6\n", ipriv->qp.qpn, gid->raw);
|
|
|
|
err = mlx5_core_detach_mcg(mdev, gid, ipriv->qp.qpn);
|
|
if (err)
|
|
mlx5_core_dbg(mdev, "failed detaching QPN 0x%x, MGID %pI6\n",
|
|
ipriv->qp.qpn, gid->raw);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int mlx5i_xmit(struct net_device *dev, struct sk_buff *skb,
|
|
struct ib_ah *address, u32 dqpn)
|
|
{
|
|
struct mlx5e_priv *epriv = mlx5i_epriv(dev);
|
|
struct mlx5e_txqsq *sq = epriv->txq2sq[skb_get_queue_mapping(skb)];
|
|
struct mlx5_ib_ah *mah = to_mah(address);
|
|
struct mlx5i_priv *ipriv = epriv->ppriv;
|
|
|
|
return mlx5i_sq_xmit(sq, skb, &mah->av, dqpn, ipriv->qkey, netdev_xmit_more());
|
|
}
|
|
|
|
static void mlx5i_set_pkey_index(struct net_device *netdev, int id)
|
|
{
|
|
struct mlx5i_priv *ipriv = netdev_priv(netdev);
|
|
|
|
ipriv->pkey_index = (u16)id;
|
|
}
|
|
|
|
static int mlx5i_check_required_hca_cap(struct mlx5_core_dev *mdev)
|
|
{
|
|
if (MLX5_CAP_GEN(mdev, port_type) != MLX5_CAP_PORT_TYPE_IB)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (!MLX5_CAP_GEN(mdev, ipoib_enhanced_offloads)) {
|
|
mlx5_core_warn(mdev, "IPoIB enhanced offloads are not supported\n");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void mlx5_rdma_netdev_free(struct net_device *netdev)
|
|
{
|
|
struct mlx5e_priv *priv = mlx5i_epriv(netdev);
|
|
struct mlx5i_priv *ipriv = priv->ppriv;
|
|
const struct mlx5e_profile *profile = priv->profile;
|
|
|
|
mlx5e_detach_netdev(priv);
|
|
profile->cleanup(priv);
|
|
|
|
if (!ipriv->sub_interface) {
|
|
mlx5i_pkey_qpn_ht_cleanup(netdev);
|
|
mlx5e_destroy_mdev_resources(priv->mdev);
|
|
}
|
|
}
|
|
|
|
static bool mlx5_is_sub_interface(struct mlx5_core_dev *mdev)
|
|
{
|
|
return mdev->mlx5e_res.pdn != 0;
|
|
}
|
|
|
|
static const struct mlx5e_profile *mlx5_get_profile(struct mlx5_core_dev *mdev)
|
|
{
|
|
if (mlx5_is_sub_interface(mdev))
|
|
return mlx5i_pkey_get_profile();
|
|
return &mlx5i_nic_profile;
|
|
}
|
|
|
|
static int mlx5_rdma_setup_rn(struct ib_device *ibdev, u8 port_num,
|
|
struct net_device *netdev, void *param)
|
|
{
|
|
struct mlx5_core_dev *mdev = (struct mlx5_core_dev *)param;
|
|
const struct mlx5e_profile *prof = mlx5_get_profile(mdev);
|
|
struct mlx5i_priv *ipriv;
|
|
struct mlx5e_priv *epriv;
|
|
struct rdma_netdev *rn;
|
|
int err;
|
|
|
|
ipriv = netdev_priv(netdev);
|
|
epriv = mlx5i_epriv(netdev);
|
|
|
|
ipriv->sub_interface = mlx5_is_sub_interface(mdev);
|
|
if (!ipriv->sub_interface) {
|
|
err = mlx5i_pkey_qpn_ht_init(netdev);
|
|
if (err) {
|
|
mlx5_core_warn(mdev, "allocate qpn_to_netdev ht failed\n");
|
|
return err;
|
|
}
|
|
|
|
/* This should only be called once per mdev */
|
|
err = mlx5e_create_mdev_resources(mdev);
|
|
if (err)
|
|
goto destroy_ht;
|
|
}
|
|
|
|
prof->init(mdev, netdev, prof, ipriv);
|
|
|
|
err = mlx5e_attach_netdev(epriv);
|
|
if (err)
|
|
goto detach;
|
|
netif_carrier_off(netdev);
|
|
|
|
/* set rdma_netdev func pointers */
|
|
rn = &ipriv->rn;
|
|
rn->hca = ibdev;
|
|
rn->send = mlx5i_xmit;
|
|
rn->attach_mcast = mlx5i_attach_mcast;
|
|
rn->detach_mcast = mlx5i_detach_mcast;
|
|
rn->set_id = mlx5i_set_pkey_index;
|
|
|
|
netdev->priv_destructor = mlx5_rdma_netdev_free;
|
|
netdev->needs_free_netdev = 1;
|
|
|
|
return 0;
|
|
|
|
detach:
|
|
prof->cleanup(epriv);
|
|
if (ipriv->sub_interface)
|
|
return err;
|
|
mlx5e_destroy_mdev_resources(mdev);
|
|
destroy_ht:
|
|
mlx5i_pkey_qpn_ht_cleanup(netdev);
|
|
return err;
|
|
}
|
|
|
|
int mlx5_rdma_rn_get_params(struct mlx5_core_dev *mdev,
|
|
struct ib_device *device,
|
|
struct rdma_netdev_alloc_params *params)
|
|
{
|
|
int nch;
|
|
int rc;
|
|
|
|
rc = mlx5i_check_required_hca_cap(mdev);
|
|
if (rc)
|
|
return rc;
|
|
|
|
nch = mlx5e_get_max_num_channels(mdev);
|
|
|
|
*params = (struct rdma_netdev_alloc_params){
|
|
.sizeof_priv = sizeof(struct mlx5i_priv) +
|
|
sizeof(struct mlx5e_priv),
|
|
.txqs = nch * MLX5E_MAX_NUM_TC,
|
|
.rxqs = nch,
|
|
.param = mdev,
|
|
.initialize_rdma_netdev = mlx5_rdma_setup_rn,
|
|
};
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(mlx5_rdma_rn_get_params);
|