From bf07aa730a04a375bc10d09df1e81357af1d4477 Mon Sep 17 00:00:00 2001 From: Paul Blakey Date: Sun, 2 Sep 2018 10:19:14 +0300 Subject: [PATCH] net/mlx5e: Support offloading tc priorities and chains for eswitch flows Currently we fail when user specify a non-zero chain, this patch adds the support for it and tc priorities. To get to a new chain, use the tc goto action. Currently we support a fixed prio range 1-16, and chain range 0-3. Signed-off-by: Paul Blakey Reviewed-by: Or Gerlitz Signed-off-by: Saeed Mahameed --- .../net/ethernet/mellanox/mlx5/core/en_main.c | 3 -- .../net/ethernet/mellanox/mlx5/core/en_rep.c | 6 --- .../net/ethernet/mellanox/mlx5/core/en_tc.c | 51 ++++++++++++++++++- .../mellanox/mlx5/core/eswitch_offloads.c | 2 +- 4 files changed, 50 insertions(+), 12 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index c9848e333450..1243edbedc9e 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -3392,9 +3392,6 @@ static int mlx5e_setup_tc_block_cb(enum tc_setup_type type, void *type_data, { struct mlx5e_priv *priv = cb_priv; - if (!tc_cls_can_offload_and_chain0(priv->netdev, type_data)) - return -EOPNOTSUPP; - switch (type) { case TC_SETUP_CLSFLOWER: return mlx5e_setup_tc_cls_flower(priv, type_data, MLX5E_TC_INGRESS); diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c index 64c2b9ea8b1e..c3c657548824 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c @@ -853,9 +853,6 @@ static int mlx5e_rep_setup_tc_cb_egdev(enum tc_setup_type type, void *type_data, { struct mlx5e_priv *priv = cb_priv; - if (!tc_cls_can_offload_and_chain0(priv->netdev, type_data)) - return -EOPNOTSUPP; - switch (type) { case TC_SETUP_CLSFLOWER: return mlx5e_rep_setup_tc_cls_flower(priv, type_data, MLX5E_TC_EGRESS); @@ -869,9 +866,6 @@ static int mlx5e_rep_setup_tc_cb(enum tc_setup_type type, void *type_data, { struct mlx5e_priv *priv = cb_priv; - if (!tc_cls_can_offload_and_chain0(priv->netdev, type_data)) - return -EOPNOTSUPP; - switch (type) { case TC_SETUP_CLSFLOWER: return mlx5e_rep_setup_tc_cls_flower(priv, type_data, MLX5E_TC_INGRESS); diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c index cb66964aa1ff..608025ca5c04 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c @@ -898,15 +898,32 @@ mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv, struct netlink_ext_ack *extack) { struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; + u32 max_chain = mlx5_eswitch_get_chain_range(esw); struct mlx5_esw_flow_attr *attr = flow->esw_attr; + u16 max_prio = mlx5_eswitch_get_prio_range(esw); struct net_device *out_dev, *encap_dev = NULL; struct mlx5_fc *counter = NULL; struct mlx5e_rep_priv *rpriv; struct mlx5e_priv *out_priv; int err = 0, encap_err = 0; - /* keep the old behaviour, use same prio for all offloaded rules */ - attr->prio = 1; + /* if prios are not supported, keep the old behaviour of using same prio + * for all offloaded rules. + */ + if (!mlx5_eswitch_prios_supported(esw)) + attr->prio = 1; + + if (attr->chain > max_chain) { + NL_SET_ERR_MSG(extack, "Requested chain is out of supported range"); + err = -EOPNOTSUPP; + goto err_max_prio_chain; + } + + if (attr->prio > max_prio) { + NL_SET_ERR_MSG(extack, "Requested priority is out of supported range"); + err = -EOPNOTSUPP; + goto err_max_prio_chain; + } if (attr->action & MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT) { out_dev = __dev_get_by_index(dev_net(priv->netdev), @@ -975,6 +992,7 @@ mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv, if (attr->action & MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT) mlx5e_detach_encap(priv, flow); err_attach_encap: +err_max_prio_chain: return err; } @@ -2826,6 +2844,7 @@ static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts, struct mlx5e_tc_flow *flow, struct netlink_ext_ack *extack) { + struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; struct mlx5_esw_flow_attr *attr = flow->esw_attr; struct mlx5e_rep_priv *rpriv = priv->ppriv; struct ip_tunnel_info *info = NULL; @@ -2934,6 +2953,25 @@ static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts, continue; } + if (is_tcf_gact_goto_chain(a)) { + u32 dest_chain = tcf_gact_goto_chain_index(a); + u32 max_chain = mlx5_eswitch_get_chain_range(esw); + + if (dest_chain <= attr->chain) { + NL_SET_ERR_MSG(extack, "Goto earlier chain isn't supported"); + return -EOPNOTSUPP; + } + if (dest_chain > max_chain) { + NL_SET_ERR_MSG(extack, "Requested destination chain is out of supported range"); + return -EOPNOTSUPP; + } + action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST | + MLX5_FLOW_CONTEXT_ACTION_COUNT; + attr->dest_chain = dest_chain; + + continue; + } + return -EINVAL; } @@ -3036,6 +3074,8 @@ mlx5e_add_fdb_flow(struct mlx5e_priv *priv, if (err) goto out; + flow->esw_attr->chain = f->common.chain_index; + flow->esw_attr->prio = TC_H_MAJ(f->common.prio) >> 16; err = parse_tc_fdb_actions(priv, f->exts, parse_attr, flow, extack); if (err) goto err_free; @@ -3070,6 +3110,10 @@ mlx5e_add_nic_flow(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow; int attr_size, err; + /* multi-chain not supported for NIC rules */ + if (!tc_cls_can_offload_and_chain0(priv->netdev, &f->common)) + return -EOPNOTSUPP; + flow_flags |= MLX5E_TC_FLOW_NIC; attr_size = sizeof(struct mlx5_nic_flow_attr); err = mlx5e_alloc_flow(priv, attr_size, f, flow_flags, @@ -3110,6 +3154,9 @@ mlx5e_tc_add_flow(struct mlx5e_priv *priv, get_flags(flags, &flow_flags); + if (!tc_can_offload_extack(priv->netdev, f->common.extack)) + return -EOPNOTSUPP; + if (esw && esw->mode == SRIOV_OFFLOADS) err = mlx5e_add_fdb_flow(priv, f, flow_flags, flow); else diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c index 42a130455ef8..9eac137790f5 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c @@ -71,7 +71,7 @@ u16 mlx5_eswitch_get_prio_range(struct mlx5_eswitch *esw) if (esw->fdb_table.flags & ESW_FDB_CHAINS_AND_PRIOS_SUPPORTED) return FDB_MAX_PRIO; - return U16_MAX; + return 1; } struct mlx5_flow_handle *