From mboxrd@z Thu Jan 1 00:00:00 1970 From: Saeed Mahameed Subject: [PATCH net-next 03/16] net/mlx5: E-Switch, Add miss rule for offloads mode Date: Mon, 27 Jun 2016 19:07:16 +0300 Message-ID: <1467043649-28594-4-git-send-email-saeedm@mellanox.com> References: <1467043649-28594-1-git-send-email-saeedm@mellanox.com> Cc: netdev@vger.kernel.org, Or Gerlitz , Hadar Hen-Zion , Jiri Pirko , Andy Gospodarek , Jesse Brandeburg , John Fastabend , Saeed Mahameed To: "David S. Miller" Return-path: Received: from [193.47.165.129] ([193.47.165.129]:36459 "EHLO mellanox.co.il" rhost-flags-FAIL-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1751912AbcF0QJN (ORCPT ); Mon, 27 Jun 2016 12:09:13 -0400 In-Reply-To: <1467043649-28594-1-git-send-email-saeedm@mellanox.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Or Gerlitz In the sriov offloads mode, packets that are not matched by any other rule should be sent towards the e-switch manager for further processing. Add such "miss" rule which matches ANY packet as the last rule in the e-switch FDB and programs the HW to send the packet to vport 0 where the e-switch manager runs. Signed-off-by: Or Gerlitz Signed-off-by: Saeed Mahameed --- drivers/net/ethernet/mellanox/mlx5/core/eswitch.h | 1 + .../ethernet/mellanox/mlx5/core/eswitch_offloads.c | 42 ++++++++++++++++++++++ 2 files changed, 43 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h index 2360180..8eed33f 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h @@ -144,6 +144,7 @@ struct mlx5_eswitch_fdb { struct offloads_fdb { struct mlx5_flow_group *send_to_vport_grp; struct mlx5_flow_group *miss_grp; + struct mlx5_flow_rule *miss_rule; } offloads; }; }; diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c index c6b28df..9310017 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c @@ -38,6 +38,41 @@ #include "mlx5_core.h" #include "eswitch.h" +static int esw_add_fdb_miss_rule(struct mlx5_eswitch *esw) +{ + struct mlx5_flow_destination dest; + struct mlx5_flow_rule *flow_rule = NULL; + int match_header = 0; + u32 *match_v, *match_c; + int err = 0; + + match_v = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL); + match_c = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL); + if (!match_v || !match_c) { + esw_warn(esw->dev, "FDB: Failed to alloc match parameters\n"); + err = -ENOMEM; + goto out; + } + + dest.type = MLX5_FLOW_DESTINATION_TYPE_VPORT; + dest.vport_num = 0; + + flow_rule = mlx5_add_flow_rule(esw->fdb_table.fdb, match_header, match_c, + match_v, MLX5_FLOW_CONTEXT_ACTION_FWD_DEST, + 0, &dest); + if (IS_ERR(flow_rule)) { + err = PTR_ERR(flow_rule); + esw_warn(esw->dev, "FDB: Failed to add miss flow rule err %d\n", err); + goto out; + } + + esw->fdb_table.offloads.miss_rule = flow_rule; +out: + kfree(match_v); + kfree(match_c); + return err; +} + #define MAX_PF_SQ 256 int esw_create_offloads_fdb_table(struct mlx5_eswitch *esw, int nvports) @@ -110,8 +145,14 @@ int esw_create_offloads_fdb_table(struct mlx5_eswitch *esw, int nvports) } esw->fdb_table.offloads.miss_grp = g; + err = esw_add_fdb_miss_rule(esw); + if (err) + goto miss_rule_err; + return 0; +miss_rule_err: + mlx5_destroy_flow_group(esw->fdb_table.offloads.miss_grp); miss_err: mlx5_destroy_flow_group(esw->fdb_table.offloads.send_to_vport_grp); send_vport_err: @@ -128,6 +169,7 @@ void esw_destroy_offloads_fdb_table(struct mlx5_eswitch *esw) return; esw_debug(esw->dev, "Destroy offloads FDB Table\n"); + mlx5_del_flow_rule(esw->fdb_table.offloads.miss_rule); mlx5_destroy_flow_group(esw->fdb_table.offloads.send_to_vport_grp); mlx5_destroy_flow_group(esw->fdb_table.offloads.miss_grp); -- 2.8.0