From 93b3586e070b14704dd7bff81fbcefd64663f3c2 Mon Sep 17 00:00:00 2001 From: Huy Nguyen Date: Wed, 17 Jul 2019 14:04:31 -0500 Subject: [PATCH] net/mlx5: Support inner header match criteria for non decap flow action We have an issue that OVS application creates an offloaded drop rule that drops VXLAN traffic with both inner and outer header match criteria. mlx5_core driver detects correctly the inner and outer header match criteria but does not enable the inner header match criteria due to an incorrect assumption in mlx5_eswitch_add_offloaded_rule that only decap rule needs inner header criteria. Solution: Remove mlx5_esw_flow_attr's match_level and tunnel_match_level and add two new members: inner_match_level and outer_match_level. inner/outer_match_level is set to NONE if the inner/outer match criteria is not specified in the tc rule creation request. The decap assumption is removed and the code just needs to check for inner/outer_match_level to enable the corresponding bit in firmware's match_criteria_enable value. Fixes: 6363651d6dd7 ("net/mlx5e: Properly set steering match levels for offloaded TC decap rules") Signed-off-by: Huy Nguyen Reviewed-by: Roi Dayan Signed-off-by: Saeed Mahameed --- .../net/ethernet/mellanox/mlx5/core/en_tc.c | 31 ++++++++++++------- .../net/ethernet/mellanox/mlx5/core/eswitch.h | 4 +-- .../mellanox/mlx5/core/eswitch_offloads.c | 12 +++---- 3 files changed, 26 insertions(+), 21 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c index 7ecfc53cf5f6..deeb65da99f3 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c @@ -1480,7 +1480,7 @@ static int __parse_cls_flower(struct mlx5e_priv *priv, struct mlx5_flow_spec *spec, struct flow_cls_offload *f, struct net_device *filter_dev, - u8 *match_level, u8 *tunnel_match_level) + u8 *inner_match_level, u8 *outer_match_level) { struct netlink_ext_ack *extack = f->common.extack; void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, @@ -1495,8 +1495,9 @@ static int __parse_cls_flower(struct mlx5e_priv *priv, struct flow_dissector *dissector = rule->match.dissector; u16 addr_type = 0; u8 ip_proto = 0; + u8 *match_level; - *match_level = MLX5_MATCH_NONE; + match_level = outer_match_level; if (dissector->used_keys & ~(BIT(FLOW_DISSECTOR_KEY_META) | @@ -1524,12 +1525,14 @@ static int __parse_cls_flower(struct mlx5e_priv *priv, } if (mlx5e_get_tc_tun(filter_dev)) { - if (parse_tunnel_attr(priv, spec, f, filter_dev, tunnel_match_level)) + if (parse_tunnel_attr(priv, spec, f, filter_dev, + outer_match_level)) return -EOPNOTSUPP; - /* In decap flow, header pointers should point to the inner + /* At this point, header pointers should point to the inner * headers, outer header were already set by parse_tunnel_attr */ + match_level = inner_match_level; headers_c = get_match_headers_criteria(MLX5_FLOW_CONTEXT_ACTION_DECAP, spec); headers_v = get_match_headers_value(MLX5_FLOW_CONTEXT_ACTION_DECAP, @@ -1831,35 +1834,41 @@ static int parse_cls_flower(struct mlx5e_priv *priv, struct flow_cls_offload *f, struct net_device *filter_dev) { + u8 inner_match_level, outer_match_level, non_tunnel_match_level; struct netlink_ext_ack *extack = f->common.extack; struct mlx5_core_dev *dev = priv->mdev; struct mlx5_eswitch *esw = dev->priv.eswitch; struct mlx5e_rep_priv *rpriv = priv->ppriv; - u8 match_level, tunnel_match_level = MLX5_MATCH_NONE; struct mlx5_eswitch_rep *rep; int err; - err = __parse_cls_flower(priv, spec, f, filter_dev, &match_level, &tunnel_match_level); + inner_match_level = MLX5_MATCH_NONE; + outer_match_level = MLX5_MATCH_NONE; + + err = __parse_cls_flower(priv, spec, f, filter_dev, &inner_match_level, + &outer_match_level); + non_tunnel_match_level = (inner_match_level == MLX5_MATCH_NONE) ? + outer_match_level : inner_match_level; if (!err && (flow->flags & MLX5E_TC_FLOW_ESWITCH)) { rep = rpriv->rep; if (rep->vport != MLX5_VPORT_UPLINK && (esw->offloads.inline_mode != MLX5_INLINE_MODE_NONE && - esw->offloads.inline_mode < match_level)) { + esw->offloads.inline_mode < non_tunnel_match_level)) { NL_SET_ERR_MSG_MOD(extack, "Flow is not offloaded due to min inline setting"); netdev_warn(priv->netdev, "Flow is not offloaded due to min inline setting, required %d actual %d\n", - match_level, esw->offloads.inline_mode); + non_tunnel_match_level, esw->offloads.inline_mode); return -EOPNOTSUPP; } } if (flow->flags & MLX5E_TC_FLOW_ESWITCH) { - flow->esw_attr->match_level = match_level; - flow->esw_attr->tunnel_match_level = tunnel_match_level; + flow->esw_attr->inner_match_level = inner_match_level; + flow->esw_attr->outer_match_level = outer_match_level; } else { - flow->nic_attr->match_level = match_level; + flow->nic_attr->match_level = non_tunnel_match_level; } return err; diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h index a38e8a3c7c9a..04685dbb280c 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h @@ -377,8 +377,8 @@ struct mlx5_esw_flow_attr { struct mlx5_termtbl_handle *termtbl; } dests[MLX5_MAX_FLOW_FWD_VPORTS]; u32 mod_hdr_id; - u8 match_level; - u8 tunnel_match_level; + u8 inner_match_level; + u8 outer_match_level; struct mlx5_fc *counter; u32 chain; u16 prio; diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c index 089ae4d48a82..0323fd078271 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c @@ -207,14 +207,10 @@ mlx5_eswitch_add_offloaded_rule(struct mlx5_eswitch *esw, mlx5_eswitch_set_rule_source_port(esw, spec, attr); - if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_DECAP) { - if (attr->tunnel_match_level != MLX5_MATCH_NONE) - spec->match_criteria_enable |= MLX5_MATCH_OUTER_HEADERS; - if (attr->match_level != MLX5_MATCH_NONE) - spec->match_criteria_enable |= MLX5_MATCH_INNER_HEADERS; - } else if (attr->match_level != MLX5_MATCH_NONE) { + if (attr->outer_match_level != MLX5_MATCH_NONE) spec->match_criteria_enable |= MLX5_MATCH_OUTER_HEADERS; - } + if (attr->inner_match_level != MLX5_MATCH_NONE) + spec->match_criteria_enable |= MLX5_MATCH_INNER_HEADERS; if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) flow_act.modify_id = attr->mod_hdr_id; @@ -290,7 +286,7 @@ mlx5_eswitch_add_fwd_rule(struct mlx5_eswitch *esw, mlx5_eswitch_set_rule_source_port(esw, spec, attr); spec->match_criteria_enable |= MLX5_MATCH_MISC_PARAMETERS; - if (attr->match_level != MLX5_MATCH_NONE) + if (attr->outer_match_level != MLX5_MATCH_NONE) spec->match_criteria_enable |= MLX5_MATCH_OUTER_HEADERS; rule = mlx5_add_flow_rules(fast_fdb, spec, &flow_act, dest, i); -- 2.30.2