From 88e96e533cfa11e996c59a44bbb6b0e0b9891970 Mon Sep 17 00:00:00 2001 From: Vu Pham Date: Mon, 2 Mar 2020 10:33:49 -0800 Subject: [PATCH] net/mlx5e: Slave representors sharing unique metadata for match Bonded slave representors' vports must share a unique metadata for match. On enslaving event of slave representor to lag device, allocate new unique "bond_metadata" for match if this is the first slave. The subsequent enslaved representors will share the same unique "bond_metadata". On unslaving event of slave representor, reset the slave representor's vport to use its own default metadata. Replace ingress acl and rx rules of the slave representors' vports using new vport->bond_metadata. Signed-off-by: Vu Pham Reviewed-by: Parav Pandit Reviewed-by: Roi Dayan Signed-off-by: Saeed Mahameed --- .../ethernet/mellanox/mlx5/core/en/rep/bond.c | 65 +++++++++++++++++-- .../net/ethernet/mellanox/mlx5/core/en_rep.c | 22 ++++++- .../net/ethernet/mellanox/mlx5/core/en_rep.h | 1 + 3 files changed, 80 insertions(+), 8 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/rep/bond.c b/drivers/net/ethernet/mellanox/mlx5/core/en/rep/bond.c index 932e94362ceb..13500f60bef6 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/rep/bond.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/rep/bond.c @@ -71,6 +71,7 @@ static void mlx5e_rep_bond_metadata_release(struct mlx5e_rep_bond_metadata *mdat netdev_dbg(mdata->lag_dev, "destroy rep_bond_metadata(%d)\n", mdata->metadata_reg_c_0); list_del(&mdata->list); + mlx5_esw_match_metadata_free(mdata->esw, mdata->metadata_reg_c_0); WARN_ON(!list_empty(&mdata->slaves_list)); kfree(mdata); } @@ -82,6 +83,8 @@ int mlx5e_rep_bond_enslave(struct mlx5_eswitch *esw, struct net_device *netdev, struct mlx5e_rep_bond_slave_entry *s_entry; struct mlx5e_rep_bond_metadata *mdata; struct mlx5e_rep_priv *rpriv; + struct mlx5e_priv *priv; + int err; ASSERT_RTNL(); @@ -96,6 +99,11 @@ int mlx5e_rep_bond_enslave(struct mlx5_eswitch *esw, struct net_device *netdev, mdata->lag_dev = lag_dev; mdata->esw = esw; INIT_LIST_HEAD(&mdata->slaves_list); + mdata->metadata_reg_c_0 = mlx5_esw_match_metadata_alloc(esw); + if (!mdata->metadata_reg_c_0) { + kfree(mdata); + return -ENOSPC; + } list_add(&mdata->list, &rpriv->uplink_priv.bond->metadata_list); netdev_dbg(lag_dev, "create rep_bond_metadata(%d)\n", @@ -103,14 +111,33 @@ int mlx5e_rep_bond_enslave(struct mlx5_eswitch *esw, struct net_device *netdev, } s_entry = kzalloc(sizeof(*s_entry), GFP_KERNEL); - if (!s_entry) - return -ENOMEM; + if (!s_entry) { + err = -ENOMEM; + goto entry_alloc_err; + } s_entry->netdev = netdev; + priv = netdev_priv(netdev); + rpriv = priv->ppriv; + + err = mlx5_esw_acl_ingress_vport_bond_update(esw, rpriv->rep->vport, + mdata->metadata_reg_c_0); + if (err) + goto ingress_err; + mdata->slaves++; list_add_tail(&s_entry->list, &mdata->slaves_list); + netdev_dbg(netdev, "enslave rep vport(%d) lag_dev(%s) metadata(0x%x)\n", + rpriv->rep->vport, lag_dev->name, mdata->metadata_reg_c_0); return 0; + +ingress_err: + kfree(s_entry); +entry_alloc_err: + if (!mdata->slaves) + mlx5e_rep_bond_metadata_release(mdata); + return err; } /* This must be called under rtnl_lock */ @@ -121,6 +148,7 @@ void mlx5e_rep_bond_unslave(struct mlx5_eswitch *esw, struct mlx5e_rep_bond_slave_entry *s_entry; struct mlx5e_rep_bond_metadata *mdata; struct mlx5e_rep_priv *rpriv; + struct mlx5e_priv *priv; ASSERT_RTNL(); @@ -133,7 +161,16 @@ void mlx5e_rep_bond_unslave(struct mlx5_eswitch *esw, if (!s_entry) return; + priv = netdev_priv(netdev); + rpriv = priv->ppriv; + + mlx5_esw_acl_ingress_vport_bond_update(esw, rpriv->rep->vport, 0); + mlx5e_rep_bond_update(priv, false); list_del(&s_entry->list); + + netdev_dbg(netdev, "unslave rep vport(%d) lag_dev(%s) metadata(0x%x)\n", + rpriv->rep->vport, lag_dev->name, mdata->metadata_reg_c_0); + if (--mdata->slaves == 0) mlx5e_rep_bond_metadata_release(mdata); kfree(s_entry); @@ -163,6 +200,7 @@ static void mlx5e_rep_changelowerstate_event(struct net_device *netdev, void *pt struct net_device *dev; u16 acl_vport_num; u16 fwd_vport_num; + int err; if (!mlx5e_rep_is_lag_netdev(netdev)) return; @@ -187,11 +225,28 @@ static void mlx5e_rep_changelowerstate_event(struct net_device *netdev, void *pt rpriv = priv->ppriv; acl_vport_num = rpriv->rep->vport; if (acl_vport_num != fwd_vport_num) { - mlx5_esw_acl_egress_vport_bond(priv->mdev->priv.eswitch, - fwd_vport_num, - acl_vport_num); + /* Only single rx_rule for unique bond_metadata should be + * present, delete it if it's saved as passive vport's + * rx_rule with destination as passive vport's root_ft + */ + mlx5e_rep_bond_update(priv, true); + err = mlx5_esw_acl_egress_vport_bond(priv->mdev->priv.eswitch, + fwd_vport_num, + acl_vport_num); + if (err) + netdev_warn(dev, + "configure slave vport(%d) egress fwd, err(%d)", + acl_vport_num, err); } } + + /* Insert new rx_rule for unique bond_metadata, save it as active vport's + * rx_rule with new destination as active vport's root_ft + */ + err = mlx5e_rep_bond_update(netdev_priv(netdev), false); + if (err) + netdev_warn(netdev, "configure active slave vport(%d) rx_rule, err(%d)", + fwd_vport_num, err); } static void mlx5e_rep_changeupper_event(struct net_device *netdev, void *ptr) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c index 12593d75e885..af89a4803c7d 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c @@ -854,6 +854,24 @@ static int mlx5e_create_rep_vport_rx_rule(struct mlx5e_priv *priv) return 0; } +static void rep_vport_rx_rule_destroy(struct mlx5e_priv *priv) +{ + struct mlx5e_rep_priv *rpriv = priv->ppriv; + + if (!rpriv->vport_rx_rule) + return; + + mlx5_del_flow_rules(rpriv->vport_rx_rule); + rpriv->vport_rx_rule = NULL; +} + +int mlx5e_rep_bond_update(struct mlx5e_priv *priv, bool cleanup) +{ + rep_vport_rx_rule_destroy(priv); + + return cleanup ? 0 : mlx5e_create_rep_vport_rx_rule(priv); +} + static int mlx5e_init_rep_rx(struct mlx5e_priv *priv) { struct mlx5_core_dev *mdev = priv->mdev; @@ -918,9 +936,7 @@ static int mlx5e_init_rep_rx(struct mlx5e_priv *priv) static void mlx5e_cleanup_rep_rx(struct mlx5e_priv *priv) { - struct mlx5e_rep_priv *rpriv = priv->ppriv; - - mlx5_del_flow_rules(rpriv->vport_rx_rule); + rep_vport_rx_rule_destroy(priv); mlx5e_destroy_rep_root_ft(priv); mlx5e_destroy_ttc_table(priv, &priv->fs.ttc); mlx5e_destroy_direct_tirs(priv, priv->direct_tir); diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h index ed741b6e6af2..da9f1686d525 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h @@ -222,6 +222,7 @@ int mlx5e_rep_bond_enslave(struct mlx5_eswitch *esw, struct net_device *netdev, void mlx5e_rep_bond_unslave(struct mlx5_eswitch *esw, const struct net_device *netdev, const struct net_device *lag_dev); +int mlx5e_rep_bond_update(struct mlx5e_priv *priv, bool cleanup); bool mlx5e_is_uplink_rep(struct mlx5e_priv *priv); int mlx5e_add_sqs_fwd_rules(struct mlx5e_priv *priv);