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From: Saeed Mahameed <saeed@kernel.org>
To: Jakub Kicinski <kuba@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>,
	netdev@vger.kernel.org, Vlad Buslov <vladbu@nvidia.com>,
	Dmytro Linkin <dlinkin@nvidia.com>, Roi Dayan <roid@nvidia.com>,
	Saeed Mahameed <saeedm@nvidia.com>
Subject: [net-next V2 04/17] net/mlx5: E-Switch, Refactor rule offload forward action processing
Date: Fri,  5 Feb 2021 21:02:27 -0800	[thread overview]
Message-ID: <20210206050240.48410-5-saeed@kernel.org> (raw)
In-Reply-To: <20210206050240.48410-1-saeed@kernel.org>

From: Vlad Buslov <vladbu@nvidia.com>

Following patches in the series extend forwarding functionality with VF
tunnel TX and RX handling. Extract action forwarding processing code into
dedicated functions to simplify further extensions:

- Handle every forwarding case with dedicated function instead of inline
code.

- Extract forwarding dest dispatch conditional into helper function
esw_setup_dests().

- Unify forwaring cleanup code in error path of
mlx5_eswitch_add_offloaded_rule() and in rule deletion code of
__mlx5_eswitch_del_rule() in new helper function esw_cleanup_dests() (dual
to new esw_setup_dests() helper).

This patch does not change functionality.

Co-developed-by: Dmytro Linkin <dlinkin@nvidia.com>
Signed-off-by: Dmytro Linkin <dlinkin@nvidia.com>
Signed-off-by: Vlad Buslov <vladbu@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
 .../mellanox/mlx5/core/eswitch_offloads.c     | 189 ++++++++++++------
 1 file changed, 129 insertions(+), 60 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
index 3085bdd14fbb..335dc83d1bb9 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
@@ -296,6 +296,124 @@ mlx5_eswitch_set_rule_source_port(struct mlx5_eswitch *esw,
 	}
 }
 
+static void
+esw_setup_ft_dest(struct mlx5_flow_destination *dest,
+		  struct mlx5_flow_act *flow_act,
+		  struct mlx5_flow_attr *attr,
+		  int i)
+{
+	flow_act->flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
+	dest[i].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
+	dest[i].ft = attr->dest_ft;
+}
+
+static void
+esw_setup_slow_path_dest(struct mlx5_flow_destination *dest,
+			 struct mlx5_flow_act *flow_act,
+			 struct mlx5_fs_chains *chains,
+			 int i)
+{
+	flow_act->flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
+	dest[i].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
+	dest[i].ft = mlx5_chains_get_tc_end_ft(chains);
+}
+
+static int
+esw_setup_chain_dest(struct mlx5_flow_destination *dest,
+		     struct mlx5_flow_act *flow_act,
+		     struct mlx5_fs_chains *chains,
+		     u32 chain, u32 prio, u32 level,
+		     int i)
+{
+	struct mlx5_flow_table *ft;
+
+	flow_act->flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
+	ft = mlx5_chains_get_table(chains, chain, prio, level);
+	if (IS_ERR(ft))
+		return PTR_ERR(ft);
+
+	dest[i].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
+	dest[i].ft = ft;
+	return  0;
+}
+
+static void
+esw_cleanup_chain_dest(struct mlx5_fs_chains *chains, u32 chain, u32 prio, u32 level)
+{
+	mlx5_chains_put_table(chains, chain, prio, level);
+}
+
+static void
+esw_setup_vport_dest(struct mlx5_flow_destination *dest, struct mlx5_flow_act *flow_act,
+		     struct mlx5_eswitch *esw, struct mlx5_esw_flow_attr *esw_attr,
+		     int attr_idx, int dest_idx, bool pkt_reformat)
+{
+	dest[dest_idx].type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
+	dest[dest_idx].vport.num = esw_attr->dests[attr_idx].rep->vport;
+	dest[dest_idx].vport.vhca_id =
+		MLX5_CAP_GEN(esw_attr->dests[attr_idx].mdev, vhca_id);
+	if (MLX5_CAP_ESW(esw->dev, merged_eswitch))
+		dest[dest_idx].vport.flags |= MLX5_FLOW_DEST_VPORT_VHCA_ID;
+	if (esw_attr->dests[attr_idx].flags & MLX5_ESW_DEST_ENCAP) {
+		if (pkt_reformat) {
+			flow_act->action |= MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT;
+			flow_act->pkt_reformat = esw_attr->dests[attr_idx].pkt_reformat;
+		}
+		dest[dest_idx].vport.flags |= MLX5_FLOW_DEST_VPORT_REFORMAT_ID;
+		dest[dest_idx].vport.pkt_reformat = esw_attr->dests[attr_idx].pkt_reformat;
+	}
+}
+
+static int
+esw_setup_vport_dests(struct mlx5_flow_destination *dest, struct mlx5_flow_act *flow_act,
+		      struct mlx5_eswitch *esw, struct mlx5_esw_flow_attr *esw_attr,
+		      int i)
+{
+	int j;
+
+	for (j = esw_attr->split_count; j < esw_attr->out_count; j++, i++)
+		esw_setup_vport_dest(dest, flow_act, esw, esw_attr, j, i, true);
+	return i;
+}
+
+static int
+esw_setup_dests(struct mlx5_flow_destination *dest,
+		struct mlx5_flow_act *flow_act,
+		struct mlx5_eswitch *esw,
+		struct mlx5_flow_attr *attr,
+		int *i)
+{
+	struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
+	struct mlx5_fs_chains *chains = esw_chains(esw);
+	int err = 0;
+
+	if (attr->dest_ft) {
+		esw_setup_ft_dest(dest, flow_act, attr, *i);
+		(*i)++;
+	} else if (attr->flags & MLX5_ESW_ATTR_FLAG_SLOW_PATH) {
+		esw_setup_slow_path_dest(dest, flow_act, chains, *i);
+		(*i)++;
+	} else if (attr->dest_chain) {
+		err = esw_setup_chain_dest(dest, flow_act, chains, attr->dest_chain,
+					   1, 0, *i);
+		(*i)++;
+	} else {
+		*i = esw_setup_vport_dests(dest, flow_act, esw, esw_attr, *i);
+	}
+
+	return err;
+}
+
+static void
+esw_cleanup_dests(struct mlx5_eswitch *esw,
+		  struct mlx5_flow_attr *attr)
+{
+	struct mlx5_fs_chains *chains = esw_chains(esw);
+
+	if (!(attr->flags & MLX5_ESW_ATTR_FLAG_SLOW_PATH) && attr->dest_chain)
+		esw_cleanup_chain_dest(chains, attr->dest_chain, 1, 0);
+}
+
 struct mlx5_flow_handle *
 mlx5_eswitch_add_offloaded_rule(struct mlx5_eswitch *esw,
 				struct mlx5_flow_spec *spec,
@@ -309,7 +427,7 @@ mlx5_eswitch_add_offloaded_rule(struct mlx5_eswitch *esw,
 	struct mlx5_vport_tbl_attr fwd_attr;
 	struct mlx5_flow_handle *rule;
 	struct mlx5_flow_table *fdb;
-	int j, i = 0;
+	int i = 0;
 
 	if (esw->mode != MLX5_ESWITCH_OFFLOADS)
 		return ERR_PTR(-EOPNOTSUPP);
@@ -331,49 +449,12 @@ mlx5_eswitch_add_offloaded_rule(struct mlx5_eswitch *esw,
 	}
 
 	if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
-		struct mlx5_flow_table *ft;
-
-		if (attr->dest_ft) {
-			flow_act.flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
-			dest[i].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
-			dest[i].ft = attr->dest_ft;
-			i++;
-		} else if (attr->flags & MLX5_ESW_ATTR_FLAG_SLOW_PATH) {
-			flow_act.flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
-			dest[i].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
-			dest[i].ft = mlx5_chains_get_tc_end_ft(chains);
-			i++;
-		} else if (attr->dest_chain) {
-			flow_act.flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
-			ft = mlx5_chains_get_table(chains, attr->dest_chain,
-						   1, 0);
-			if (IS_ERR(ft)) {
-				rule = ERR_CAST(ft);
-				goto err_create_goto_table;
-			}
-
-			dest[i].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
-			dest[i].ft = ft;
-			i++;
-		} else {
-			for (j = esw_attr->split_count; j < esw_attr->out_count; j++) {
-				dest[i].type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
-				dest[i].vport.num = esw_attr->dests[j].rep->vport;
-				dest[i].vport.vhca_id =
-					MLX5_CAP_GEN(esw_attr->dests[j].mdev, vhca_id);
-				if (MLX5_CAP_ESW(esw->dev, merged_eswitch))
-					dest[i].vport.flags |=
-						MLX5_FLOW_DEST_VPORT_VHCA_ID;
-				if (esw_attr->dests[j].flags & MLX5_ESW_DEST_ENCAP) {
-					flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT;
-					flow_act.pkt_reformat =
-							esw_attr->dests[j].pkt_reformat;
-					dest[i].vport.flags |= MLX5_FLOW_DEST_VPORT_REFORMAT_ID;
-					dest[i].vport.pkt_reformat =
-						esw_attr->dests[j].pkt_reformat;
-				}
-				i++;
-			}
+		int err;
+
+		err = esw_setup_dests(dest, &flow_act, esw, attr, &i);
+		if (err) {
+			rule = ERR_PTR(err);
+			goto err_create_goto_table;
 		}
 	}
 
@@ -437,8 +518,7 @@ mlx5_eswitch_add_offloaded_rule(struct mlx5_eswitch *esw,
 	else if (attr->chain || attr->prio)
 		mlx5_chains_put_table(chains, attr->chain, attr->prio, 0);
 err_esw_get:
-	if (!(attr->flags & MLX5_ESW_ATTR_FLAG_SLOW_PATH) && attr->dest_chain)
-		mlx5_chains_put_table(chains, attr->dest_chain, 1, 0);
+	esw_cleanup_dests(esw, attr);
 err_create_goto_table:
 	return rule;
 }
@@ -474,18 +554,8 @@ mlx5_eswitch_add_fwd_rule(struct mlx5_eswitch *esw,
 	}
 
 	flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
-	for (i = 0; i < esw_attr->split_count; i++) {
-		dest[i].type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
-		dest[i].vport.num = esw_attr->dests[i].rep->vport;
-		dest[i].vport.vhca_id =
-			MLX5_CAP_GEN(esw_attr->dests[i].mdev, vhca_id);
-		if (MLX5_CAP_ESW(esw->dev, merged_eswitch))
-			dest[i].vport.flags |= MLX5_FLOW_DEST_VPORT_VHCA_ID;
-		if (esw_attr->dests[i].flags & MLX5_ESW_DEST_ENCAP) {
-			dest[i].vport.flags |= MLX5_FLOW_DEST_VPORT_REFORMAT_ID;
-			dest[i].vport.pkt_reformat = esw_attr->dests[i].pkt_reformat;
-		}
-	}
+	for (i = 0; i < esw_attr->split_count; i++)
+		esw_setup_vport_dest(dest, &flow_act, esw, esw_attr, i, i, false);
 	dest[i].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
 	dest[i].ft = fwd_fdb;
 	i++;
@@ -552,8 +622,7 @@ __mlx5_eswitch_del_rule(struct mlx5_eswitch *esw,
 			esw_vport_tbl_put(esw, &fwd_attr);
 		else if (attr->chain || attr->prio)
 			mlx5_chains_put_table(chains, attr->chain, attr->prio, 0);
-		if (attr->dest_chain)
-			mlx5_chains_put_table(chains, attr->dest_chain, 1, 0);
+		esw_cleanup_dests(esw, attr);
 	}
 }
 
-- 
2.29.2


  parent reply	other threads:[~2021-02-06  5:08 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-06  5:02 [pull request][net-next V2 00/17] mlx5 updates 2021-02-04 Saeed Mahameed
2021-02-06  5:02 ` [net-next V2 01/17] net/mlx5: E-Switch, Refactor setting source port Saeed Mahameed
2021-02-06 18:13   ` Marcelo Ricardo Leitner
2021-02-08  8:21     ` Vlad Buslov
2021-02-08 13:25       ` Marcelo Ricardo Leitner
2021-02-08 13:31         ` Vlad Buslov
2021-02-08 13:42           ` Marcelo Ricardo Leitner
2021-02-08 20:22       ` Jakub Kicinski
2021-02-09 14:22         ` Vlad Buslov
2021-02-09 16:10           ` Or Gerlitz
2021-02-10 13:56             ` Marcelo Ricardo Leitner
2021-02-10 16:44               ` Vlad Buslov
2021-02-09 18:05           ` Jakub Kicinski
2021-02-09 19:17             ` Vlad Buslov
2021-02-09 19:50               ` Jakub Kicinski
2021-02-10 11:25                 ` Vlad Buslov
2021-02-10 19:43                   ` Jakub Kicinski
2021-02-09  0:20   ` patchwork-bot+netdevbpf
2021-02-06  5:02 ` [net-next V2 02/17] net/mlx5e: E-Switch, Maintain vhca_id to vport_num mapping Saeed Mahameed
2021-02-06  5:02 ` [net-next V2 03/17] net/mlx5e: Always set attr mdev pointer Saeed Mahameed
2021-02-06  5:02 ` Saeed Mahameed [this message]
2021-02-06  5:02 ` [net-next V2 05/17] net/mlx5e: VF tunnel TX traffic offloading Saeed Mahameed
2021-02-06  5:02 ` [net-next V2 06/17] net/mlx5e: Refactor tun routing helpers Saeed Mahameed
2021-02-06  5:02 ` [net-next V2 07/17] net/mlx5: E-Switch, Indirect table infrastructure Saeed Mahameed
2021-02-06  5:02 ` [net-next V2 08/17] net/mlx5e: Remove redundant match on tunnel destination mac Saeed Mahameed
2021-02-06  5:02 ` [net-next V2 09/17] net/mlx5e: VF tunnel RX traffic offloading Saeed Mahameed
2021-02-06  5:02 ` [net-next V2 10/17] net/mlx5e: Refactor reg_c1 usage Saeed Mahameed
2021-02-06  5:02 ` [net-next V2 11/17] net/mlx5e: Match recirculated packet miss in slow table using reg_c1 Saeed Mahameed
2021-02-06  5:02 ` [net-next V2 12/17] net/mlx5e: Extract tc tunnel encap/decap code to dedicated file Saeed Mahameed
2021-02-09 20:35   ` Guenter Roeck
2021-02-06  5:02 ` [net-next V2 13/17] net/mlx5e: Create route entry infrastructure Saeed Mahameed
2021-02-06  5:02 ` [net-next V2 14/17] net/mlx5e: Refactor neigh update infrastructure Saeed Mahameed
2021-02-06  5:02 ` [net-next V2 15/17] net/mlx5e: TC preparation refactoring for routing update event Saeed Mahameed
2021-02-06  5:02 ` [net-next V2 16/17] net/mlx5e: Rename some encap-specific API to generic names Saeed Mahameed
2021-02-06  5:02 ` [net-next V2 17/17] net/mlx5e: Handle FIB events to update tunnel endpoint device Saeed Mahameed
2021-02-08 21:55 ` [pull request][net-next V2 00/17] mlx5 updates 2021-02-04 Or Gerlitz
2021-02-09  8:42 ` Or Gerlitz
2021-02-09  8:43   ` Or Gerlitz
2021-02-10 16:51   ` Vlad Buslov

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