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IB/mlx5: Enable IPoIB acceleration
Enable mlx5 IPoIB acceleration by declaring
mlx5_ib_{alloc,free}_rdma_netdev and assigning the mlx5
IPoIB rdma_netdev callbacks.
In addition, this patch brings in sync mlx5's IPoIB parts for net and IB
trees. As a precaution, we disabled IPoIB acceleration by default (in
the mlx5_core Kconfig file).
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Erez Shitrit <erezsh@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Erez Shitrit
Doug Ledford
parent
4ac4d58488
commit
693dfd5a3f
@ -3530,6 +3530,26 @@ static int mlx5_ib_get_hw_stats(struct ib_device *ibdev,
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return num_counters;
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}
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static struct net_device*
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mlx5_ib_alloc_rdma_netdev(struct ib_device *hca,
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u8 port_num,
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enum rdma_netdev_t type,
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const char *name,
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unsigned char name_assign_type,
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void (*setup)(struct net_device *))
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{
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if (type != RDMA_NETDEV_IPOIB)
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return ERR_PTR(-EOPNOTSUPP);
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return mlx5_rdma_netdev_alloc(to_mdev(hca)->mdev, hca,
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name, setup);
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}
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static void mlx5_ib_free_rdma_netdev(struct net_device *netdev)
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{
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return mlx5_rdma_netdev_free(netdev);
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}
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static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
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{
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struct mlx5_ib_dev *dev;
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@ -3660,6 +3680,8 @@ static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
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dev->ib_dev.check_mr_status = mlx5_ib_check_mr_status;
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dev->ib_dev.get_port_immutable = mlx5_port_immutable;
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dev->ib_dev.get_dev_fw_str = get_dev_fw_str;
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dev->ib_dev.alloc_rdma_netdev = mlx5_ib_alloc_rdma_netdev;
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dev->ib_dev.free_rdma_netdev = mlx5_ib_free_rdma_netdev;
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if (mlx5_core_is_pf(mdev)) {
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dev->ib_dev.get_vf_config = mlx5_ib_get_vf_config;
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dev->ib_dev.set_vf_link_state = mlx5_ib_set_vf_link_state;
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@ -35,6 +35,6 @@ config MLX5_CORE_EN_DCB
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config MLX5_CORE_IPOIB
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bool "Mellanox Technologies ConnectX-4 IPoIB offloads support"
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depends on MLX5_CORE_EN
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default y
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default n
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---help---
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MLX5 IPoIB offloads & acceleration support.
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@ -30,6 +30,7 @@
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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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@ -359,10 +360,10 @@ unlock:
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return 0;
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}
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#ifdef notusedyet
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/* IPoIB RDMA netdev callbacks */
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static int mlx5i_attach_mcast(struct net_device *netdev, struct ib_device *hca,
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union ib_gid *gid, u16 lid, int set_qkey)
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union ib_gid *gid, u16 lid, int set_qkey,
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u32 qkey)
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{
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struct mlx5e_priv *epriv = mlx5i_epriv(netdev);
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struct mlx5_core_dev *mdev = epriv->mdev;
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@ -375,6 +376,12 @@ static int mlx5i_attach_mcast(struct net_device *netdev, struct ib_device *hca,
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mlx5_core_warn(mdev, "failed attaching QPN 0x%x, MGID %pI6\n",
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ipriv->qp.qpn, gid->raw);
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if (set_qkey) {
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mlx5_core_dbg(mdev, "%s setting qkey 0x%x\n",
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netdev->name, qkey);
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ipriv->qkey = qkey;
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}
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return err;
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}
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@ -397,15 +404,15 @@ static int mlx5i_detach_mcast(struct net_device *netdev, struct ib_device *hca,
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}
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static int mlx5i_xmit(struct net_device *dev, struct sk_buff *skb,
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struct ib_ah *address, u32 dqpn, u32 dqkey)
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struct ib_ah *address, u32 dqpn)
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{
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struct mlx5e_priv *epriv = mlx5i_epriv(dev);
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struct mlx5e_txqsq *sq = epriv->txq2sq[skb_get_queue_mapping(skb)];
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struct mlx5_ib_ah *mah = to_mah(address);
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struct mlx5i_priv *ipriv = epriv->ppriv;
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return mlx5i_sq_xmit(sq, skb, &mah->av, dqpn, dqkey);
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return mlx5i_sq_xmit(sq, skb, &mah->av, dqpn, ipriv->qkey);
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}
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#endif
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static int mlx5i_check_required_hca_cap(struct mlx5_core_dev *mdev)
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{
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@ -414,22 +421,23 @@ static int mlx5i_check_required_hca_cap(struct mlx5_core_dev *mdev)
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if (!MLX5_CAP_GEN(mdev, ipoib_enhanced_offloads)) {
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mlx5_core_warn(mdev, "IPoIB enhanced offloads are not supported\n");
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return -ENOTSUPP;
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return -EOPNOTSUPP;
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}
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return 0;
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}
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static struct net_device *mlx5_rdma_netdev_alloc(struct mlx5_core_dev *mdev,
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struct ib_device *ibdev,
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const char *name,
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void (*setup)(struct net_device *))
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struct net_device *mlx5_rdma_netdev_alloc(struct mlx5_core_dev *mdev,
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struct ib_device *ibdev,
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const char *name,
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void (*setup)(struct net_device *))
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{
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const struct mlx5e_profile *profile = &mlx5i_nic_profile;
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int nch = profile->max_nch(mdev);
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struct net_device *netdev;
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struct mlx5i_priv *ipriv;
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struct mlx5e_priv *epriv;
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struct rdma_netdev *rn;
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int err;
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if (mlx5i_check_required_hca_cap(mdev)) {
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@ -464,13 +472,13 @@ static struct net_device *mlx5_rdma_netdev_alloc(struct mlx5_core_dev *mdev,
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mlx5e_attach_netdev(epriv);
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netif_carrier_off(netdev);
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/* TODO: set rdma_netdev func pointers
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* rn = &ipriv->rn;
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* rn->hca = ibdev;
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* rn->send = mlx5i_xmit;
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* rn->attach_mcast = mlx5i_attach_mcast;
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* rn->detach_mcast = mlx5i_detach_mcast;
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*/
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/* set rdma_netdev func pointers */
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rn = &ipriv->rn;
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rn->hca = ibdev;
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rn->send = mlx5i_xmit;
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rn->attach_mcast = mlx5i_attach_mcast;
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rn->detach_mcast = mlx5i_detach_mcast;
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return netdev;
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err_free_netdev:
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@ -482,7 +490,7 @@ free_mdev_resources:
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}
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EXPORT_SYMBOL(mlx5_rdma_netdev_alloc);
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static void mlx5_rdma_netdev_free(struct net_device *netdev)
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void mlx5_rdma_netdev_free(struct net_device *netdev)
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{
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struct mlx5e_priv *priv = mlx5i_epriv(netdev);
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const struct mlx5e_profile *profile = priv->profile;
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@ -40,7 +40,9 @@
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/* ipoib rdma netdev's private data structure */
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struct mlx5i_priv {
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struct rdma_netdev rn; /* keep this first */
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struct mlx5_core_qp qp;
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u32 qkey;
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char *mlx5e_priv[0];
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};
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@ -1102,6 +1102,25 @@ struct net_device *mlx5_lag_get_roce_netdev(struct mlx5_core_dev *dev);
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struct mlx5_uars_page *mlx5_get_uars_page(struct mlx5_core_dev *mdev);
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void mlx5_put_uars_page(struct mlx5_core_dev *mdev, struct mlx5_uars_page *up);
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#ifndef CONFIG_MLX5_CORE_IPOIB
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static inline
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struct net_device *mlx5_rdma_netdev_alloc(struct mlx5_core_dev *mdev,
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struct ib_device *ibdev,
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const char *name,
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void (*setup)(struct net_device *))
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{
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return ERR_PTR(-EOPNOTSUPP);
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}
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static inline void mlx5_rdma_netdev_free(struct net_device *netdev) {}
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#else
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struct net_device *mlx5_rdma_netdev_alloc(struct mlx5_core_dev *mdev,
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struct ib_device *ibdev,
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const char *name,
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void (*setup)(struct net_device *));
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void mlx5_rdma_netdev_free(struct net_device *netdev);
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#endif /* CONFIG_MLX5_CORE_IPOIB */
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struct mlx5_profile {
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u64 mask;
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u8 log_max_qp;
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