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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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net/mlx5: Bridge, snoop igmp/mld packets
Handle SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED attribute notification to dynamically toggle bridge multicast offload. Set new MLX5_ESW_BRIDGE_MCAST_FLAG bridge flag when multicast offload is enabled. Put multicast-specific code into new bridge_mcast.c file. When initializing bridge multicast pipeline create a static rule for snooping on IGMP traffic and three rules for snooping on MLD traffic (for query, report and done message types). Note that matching MLD traffic requires having flexparser MLX5_FLEX_PROTO_ICMPV6 capability enabled. By default Linux bridge is created with multicast enabled which can be modified by 'mcast_snooping' argument: $ ip link set name my_bridge type bridge mcast_snooping 0 Signed-off-by: Vlad Buslov <vladbu@nvidia.com> Reviewed-by: Maor Dickman <maord@nvidia.com> Reviewed-by: Roi Dayan <roid@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Vlad Buslov
Saeed Mahameed
parent
b99c4ef29e
commit
18c2916cee
6 changed files with 384 additions and 5 deletions
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@ -75,7 +75,7 @@ mlx5_core-$(CONFIG_MLX5_ESWITCH) += esw/acl/helper.o \
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esw/acl/egress_lgcy.o esw/acl/egress_ofld.o \
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esw/acl/ingress_lgcy.o esw/acl/ingress_ofld.o
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mlx5_core-$(CONFIG_MLX5_BRIDGE) += esw/bridge.o en/rep/bridge.o
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mlx5_core-$(CONFIG_MLX5_BRIDGE) += esw/bridge.o esw/bridge_mcast.o en/rep/bridge.o
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mlx5_core-$(CONFIG_THERMAL) += thermal.o
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mlx5_core-$(CONFIG_MLX5_MPFS) += lib/mpfs.o
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@ -306,6 +306,10 @@ mlx5_esw_bridge_port_obj_attr_set(struct net_device *dev,
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attr->u.vlan_protocol,
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br_offloads);
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break;
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case SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED:
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err = mlx5_esw_bridge_mcast_set(vport_num, esw_owner_vhca_id,
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!attr->u.mc_disabled, br_offloads);
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break;
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default:
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err = -EOPNOTSUPP;
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}
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@ -868,6 +868,7 @@ static void mlx5_esw_bridge_put(struct mlx5_esw_bridge_offloads *br_offloads,
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return;
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mlx5_esw_bridge_egress_table_cleanup(bridge);
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mlx5_esw_bridge_mcast_disable(bridge);
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list_del(&bridge->list);
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rhashtable_destroy(&bridge->fdb_ht);
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kvfree(bridge);
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@ -1458,6 +1459,36 @@ int mlx5_esw_bridge_vlan_proto_set(u16 vport_num, u16 esw_owner_vhca_id, u16 pro
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return 0;
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}
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int mlx5_esw_bridge_mcast_set(u16 vport_num, u16 esw_owner_vhca_id, bool enable,
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struct mlx5_esw_bridge_offloads *br_offloads)
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{
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struct mlx5_eswitch *esw = br_offloads->esw;
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struct mlx5_esw_bridge *bridge;
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int err = 0;
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bool mcast;
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if (!(MLX5_CAP_ESW_FLOWTABLE((esw)->dev, fdb_multi_path_any_table) ||
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MLX5_CAP_ESW_FLOWTABLE((esw)->dev, fdb_multi_path_any_table_limit_regc)) ||
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!MLX5_CAP_ESW_FLOWTABLE((esw)->dev, fdb_uplink_hairpin) ||
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!MLX5_CAP_ESW_FLOWTABLE_FDB((esw)->dev, ignore_flow_level))
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return -EOPNOTSUPP;
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bridge = mlx5_esw_bridge_from_port_lookup(vport_num, esw_owner_vhca_id, br_offloads);
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if (!bridge)
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return -EINVAL;
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mcast = bridge->flags & MLX5_ESW_BRIDGE_MCAST_FLAG;
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if (mcast == enable)
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return 0;
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if (enable)
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err = mlx5_esw_bridge_mcast_enable(bridge);
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else
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mlx5_esw_bridge_mcast_disable(bridge);
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return err;
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}
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static int mlx5_esw_bridge_vport_init(u16 vport_num, u16 esw_owner_vhca_id, u16 flags,
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struct mlx5_esw_bridge_offloads *br_offloads,
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struct mlx5_esw_bridge *bridge)
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@ -25,12 +25,19 @@ struct mlx5_esw_bridge_offloads {
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struct delayed_work update_work;
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struct mlx5_flow_table *ingress_ft;
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struct mlx5_flow_group *ingress_igmp_fg;
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struct mlx5_flow_group *ingress_mld_fg;
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struct mlx5_flow_group *ingress_vlan_fg;
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struct mlx5_flow_group *ingress_vlan_filter_fg;
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struct mlx5_flow_group *ingress_qinq_fg;
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struct mlx5_flow_group *ingress_qinq_filter_fg;
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struct mlx5_flow_group *ingress_mac_fg;
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struct mlx5_flow_handle *igmp_handle;
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struct mlx5_flow_handle *mld_query_handle;
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struct mlx5_flow_handle *mld_report_handle;
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struct mlx5_flow_handle *mld_done_handle;
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struct mlx5_flow_table *skip_ft;
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};
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@ -64,6 +71,8 @@ int mlx5_esw_bridge_vlan_filtering_set(u16 vport_num, u16 esw_owner_vhca_id, boo
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struct mlx5_esw_bridge_offloads *br_offloads);
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int mlx5_esw_bridge_vlan_proto_set(u16 vport_num, u16 esw_owner_vhca_id, u16 proto,
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struct mlx5_esw_bridge_offloads *br_offloads);
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int mlx5_esw_bridge_mcast_set(u16 vport_num, u16 esw_owner_vhca_id, bool enable,
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struct mlx5_esw_bridge_offloads *br_offloads);
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int mlx5_esw_bridge_port_vlan_add(u16 vport_num, u16 esw_owner_vhca_id, u16 vid, u16 flags,
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struct mlx5_esw_bridge_offloads *br_offloads,
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struct netlink_ext_ack *extack);
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316
drivers/net/ethernet/mellanox/mlx5/core/esw/bridge_mcast.c
Normal file
316
drivers/net/ethernet/mellanox/mlx5/core/esw/bridge_mcast.c
Normal file
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@ -0,0 +1,316 @@
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// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
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/* Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved. */
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#include "bridge.h"
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#include "eswitch.h"
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#include "bridge_priv.h"
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static struct mlx5_flow_group *
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mlx5_esw_bridge_ingress_igmp_fg_create(struct mlx5_eswitch *esw,
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struct mlx5_flow_table *ingress_ft)
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{
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int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
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struct mlx5_flow_group *fg;
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u32 *in, *match;
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in = kvzalloc(inlen, GFP_KERNEL);
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if (!in)
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return ERR_PTR(-ENOMEM);
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MLX5_SET(create_flow_group_in, in, match_criteria_enable, MLX5_MATCH_OUTER_HEADERS);
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match = MLX5_ADDR_OF(create_flow_group_in, in, match_criteria);
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MLX5_SET_TO_ONES(fte_match_param, match, outer_headers.ip_version);
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MLX5_SET_TO_ONES(fte_match_param, match, outer_headers.ip_protocol);
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MLX5_SET(create_flow_group_in, in, start_flow_index,
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MLX5_ESW_BRIDGE_INGRESS_TABLE_IGMP_GRP_IDX_FROM);
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MLX5_SET(create_flow_group_in, in, end_flow_index,
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MLX5_ESW_BRIDGE_INGRESS_TABLE_IGMP_GRP_IDX_TO);
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fg = mlx5_create_flow_group(ingress_ft, in);
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kvfree(in);
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if (IS_ERR(fg))
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esw_warn(esw->dev,
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"Failed to create IGMP flow group for bridge ingress table (err=%pe)\n",
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fg);
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return fg;
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}
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static struct mlx5_flow_group *
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mlx5_esw_bridge_ingress_mld_fg_create(struct mlx5_eswitch *esw,
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struct mlx5_flow_table *ingress_ft)
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{
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int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
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struct mlx5_flow_group *fg;
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u32 *in, *match;
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if (!(MLX5_CAP_GEN(esw->dev, flex_parser_protocols) & MLX5_FLEX_PROTO_ICMPV6)) {
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esw_warn(esw->dev,
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"Can't create MLD flow group due to missing hardware ICMPv6 parsing support\n");
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return NULL;
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}
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in = kvzalloc(inlen, GFP_KERNEL);
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if (!in)
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return ERR_PTR(-ENOMEM);
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MLX5_SET(create_flow_group_in, in, match_criteria_enable,
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MLX5_MATCH_OUTER_HEADERS | MLX5_MATCH_MISC_PARAMETERS_3);
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match = MLX5_ADDR_OF(create_flow_group_in, in, match_criteria);
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MLX5_SET_TO_ONES(fte_match_param, match, outer_headers.ip_version);
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MLX5_SET_TO_ONES(fte_match_param, match, misc_parameters_3.icmpv6_type);
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MLX5_SET(create_flow_group_in, in, start_flow_index,
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MLX5_ESW_BRIDGE_INGRESS_TABLE_MLD_GRP_IDX_FROM);
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MLX5_SET(create_flow_group_in, in, end_flow_index,
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MLX5_ESW_BRIDGE_INGRESS_TABLE_MLD_GRP_IDX_TO);
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fg = mlx5_create_flow_group(ingress_ft, in);
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kvfree(in);
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if (IS_ERR(fg))
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esw_warn(esw->dev,
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"Failed to create MLD flow group for bridge ingress table (err=%pe)\n",
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fg);
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return fg;
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}
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static int
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mlx5_esw_bridge_ingress_mcast_fgs_init(struct mlx5_esw_bridge_offloads *br_offloads)
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{
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struct mlx5_flow_table *ingress_ft = br_offloads->ingress_ft;
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struct mlx5_eswitch *esw = br_offloads->esw;
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struct mlx5_flow_group *igmp_fg, *mld_fg;
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igmp_fg = mlx5_esw_bridge_ingress_igmp_fg_create(esw, ingress_ft);
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if (IS_ERR(igmp_fg))
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return PTR_ERR(igmp_fg);
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mld_fg = mlx5_esw_bridge_ingress_mld_fg_create(esw, ingress_ft);
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if (IS_ERR(mld_fg)) {
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mlx5_destroy_flow_group(igmp_fg);
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return PTR_ERR(mld_fg);
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}
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br_offloads->ingress_igmp_fg = igmp_fg;
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br_offloads->ingress_mld_fg = mld_fg;
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return 0;
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}
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static void
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mlx5_esw_bridge_ingress_mcast_fgs_cleanup(struct mlx5_esw_bridge_offloads *br_offloads)
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{
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if (br_offloads->ingress_mld_fg)
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mlx5_destroy_flow_group(br_offloads->ingress_mld_fg);
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br_offloads->ingress_mld_fg = NULL;
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if (br_offloads->ingress_igmp_fg)
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mlx5_destroy_flow_group(br_offloads->ingress_igmp_fg);
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br_offloads->ingress_igmp_fg = NULL;
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}
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static struct mlx5_flow_handle *
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mlx5_esw_bridge_ingress_igmp_fh_create(struct mlx5_flow_table *ingress_ft,
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struct mlx5_flow_table *skip_ft)
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{
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struct mlx5_flow_destination dest = {
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.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE,
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.ft = skip_ft,
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};
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struct mlx5_flow_act flow_act = {
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.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST,
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.flags = FLOW_ACT_NO_APPEND,
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};
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struct mlx5_flow_spec *rule_spec;
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struct mlx5_flow_handle *handle;
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rule_spec = kvzalloc(sizeof(*rule_spec), GFP_KERNEL);
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if (!rule_spec)
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return ERR_PTR(-ENOMEM);
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rule_spec->match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;
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MLX5_SET_TO_ONES(fte_match_param, rule_spec->match_criteria, outer_headers.ip_version);
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MLX5_SET(fte_match_param, rule_spec->match_value, outer_headers.ip_version, 4);
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MLX5_SET_TO_ONES(fte_match_param, rule_spec->match_criteria, outer_headers.ip_protocol);
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MLX5_SET(fte_match_param, rule_spec->match_value, outer_headers.ip_protocol, IPPROTO_IGMP);
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handle = mlx5_add_flow_rules(ingress_ft, rule_spec, &flow_act, &dest, 1);
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kvfree(rule_spec);
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return handle;
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}
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static struct mlx5_flow_handle *
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mlx5_esw_bridge_ingress_mld_fh_create(u8 type, struct mlx5_flow_table *ingress_ft,
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struct mlx5_flow_table *skip_ft)
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{
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struct mlx5_flow_destination dest = {
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.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE,
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.ft = skip_ft,
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};
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struct mlx5_flow_act flow_act = {
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.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST,
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.flags = FLOW_ACT_NO_APPEND,
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};
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struct mlx5_flow_spec *rule_spec;
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struct mlx5_flow_handle *handle;
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rule_spec = kvzalloc(sizeof(*rule_spec), GFP_KERNEL);
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if (!rule_spec)
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return ERR_PTR(-ENOMEM);
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rule_spec->match_criteria_enable = MLX5_MATCH_OUTER_HEADERS | MLX5_MATCH_MISC_PARAMETERS_3;
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MLX5_SET_TO_ONES(fte_match_param, rule_spec->match_criteria, outer_headers.ip_version);
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MLX5_SET(fte_match_param, rule_spec->match_value, outer_headers.ip_version, 6);
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MLX5_SET_TO_ONES(fte_match_param, rule_spec->match_criteria, misc_parameters_3.icmpv6_type);
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MLX5_SET(fte_match_param, rule_spec->match_value, misc_parameters_3.icmpv6_type, type);
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handle = mlx5_add_flow_rules(ingress_ft, rule_spec, &flow_act, &dest, 1);
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kvfree(rule_spec);
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return handle;
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}
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static int
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mlx5_esw_bridge_ingress_mcast_fhs_create(struct mlx5_esw_bridge_offloads *br_offloads)
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{
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struct mlx5_flow_handle *igmp_handle, *mld_query_handle, *mld_report_handle,
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*mld_done_handle;
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struct mlx5_flow_table *ingress_ft = br_offloads->ingress_ft,
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*skip_ft = br_offloads->skip_ft;
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int err;
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igmp_handle = mlx5_esw_bridge_ingress_igmp_fh_create(ingress_ft, skip_ft);
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if (IS_ERR(igmp_handle))
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return PTR_ERR(igmp_handle);
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if (br_offloads->ingress_mld_fg) {
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mld_query_handle = mlx5_esw_bridge_ingress_mld_fh_create(ICMPV6_MGM_QUERY,
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ingress_ft,
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skip_ft);
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if (IS_ERR(mld_query_handle)) {
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err = PTR_ERR(mld_query_handle);
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goto err_mld_query;
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}
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mld_report_handle = mlx5_esw_bridge_ingress_mld_fh_create(ICMPV6_MGM_REPORT,
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ingress_ft,
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skip_ft);
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if (IS_ERR(mld_report_handle)) {
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err = PTR_ERR(mld_report_handle);
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goto err_mld_report;
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}
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mld_done_handle = mlx5_esw_bridge_ingress_mld_fh_create(ICMPV6_MGM_REDUCTION,
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ingress_ft,
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skip_ft);
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if (IS_ERR(mld_done_handle)) {
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err = PTR_ERR(mld_done_handle);
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goto err_mld_done;
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}
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} else {
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mld_query_handle = NULL;
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mld_report_handle = NULL;
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mld_done_handle = NULL;
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}
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br_offloads->igmp_handle = igmp_handle;
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br_offloads->mld_query_handle = mld_query_handle;
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br_offloads->mld_report_handle = mld_report_handle;
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br_offloads->mld_done_handle = mld_done_handle;
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return 0;
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err_mld_done:
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mlx5_del_flow_rules(mld_report_handle);
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err_mld_report:
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mlx5_del_flow_rules(mld_query_handle);
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err_mld_query:
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mlx5_del_flow_rules(igmp_handle);
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return err;
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}
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static void
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mlx5_esw_bridge_ingress_mcast_fhs_cleanup(struct mlx5_esw_bridge_offloads *br_offloads)
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{
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if (br_offloads->mld_done_handle)
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mlx5_del_flow_rules(br_offloads->mld_done_handle);
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br_offloads->mld_done_handle = NULL;
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if (br_offloads->mld_report_handle)
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mlx5_del_flow_rules(br_offloads->mld_report_handle);
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br_offloads->mld_report_handle = NULL;
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if (br_offloads->mld_query_handle)
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mlx5_del_flow_rules(br_offloads->mld_query_handle);
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br_offloads->mld_query_handle = NULL;
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if (br_offloads->igmp_handle)
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mlx5_del_flow_rules(br_offloads->igmp_handle);
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br_offloads->igmp_handle = NULL;
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}
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static int mlx5_esw_brige_mcast_global_enable(struct mlx5_esw_bridge_offloads *br_offloads)
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{
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int err;
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|
||||
if (br_offloads->ingress_igmp_fg)
|
||||
return 0; /* already enabled by another bridge */
|
||||
|
||||
err = mlx5_esw_bridge_ingress_mcast_fgs_init(br_offloads);
|
||||
if (err) {
|
||||
esw_warn(br_offloads->esw->dev,
|
||||
"Failed to create global multicast flow groups (err=%d)\n",
|
||||
err);
|
||||
return err;
|
||||
}
|
||||
|
||||
err = mlx5_esw_bridge_ingress_mcast_fhs_create(br_offloads);
|
||||
if (err) {
|
||||
esw_warn(br_offloads->esw->dev,
|
||||
"Failed to create global multicast flows (err=%d)\n",
|
||||
err);
|
||||
goto err_fhs;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
err_fhs:
|
||||
mlx5_esw_bridge_ingress_mcast_fgs_cleanup(br_offloads);
|
||||
return err;
|
||||
}
|
||||
|
||||
static void mlx5_esw_brige_mcast_global_disable(struct mlx5_esw_bridge_offloads *br_offloads)
|
||||
{
|
||||
struct mlx5_esw_bridge *br;
|
||||
|
||||
list_for_each_entry(br, &br_offloads->bridges, list) {
|
||||
/* Ingress table is global, so only disable snooping when all
|
||||
* bridges on esw have multicast disabled.
|
||||
*/
|
||||
if (br->flags & MLX5_ESW_BRIDGE_MCAST_FLAG)
|
||||
return;
|
||||
}
|
||||
|
||||
mlx5_esw_bridge_ingress_mcast_fhs_cleanup(br_offloads);
|
||||
mlx5_esw_bridge_ingress_mcast_fgs_cleanup(br_offloads);
|
||||
}
|
||||
|
||||
int mlx5_esw_bridge_mcast_enable(struct mlx5_esw_bridge *bridge)
|
||||
{
|
||||
int err;
|
||||
|
||||
err = mlx5_esw_brige_mcast_global_enable(bridge->br_offloads);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
bridge->flags |= MLX5_ESW_BRIDGE_MCAST_FLAG;
|
||||
return 0;
|
||||
}
|
||||
|
||||
void mlx5_esw_bridge_mcast_disable(struct mlx5_esw_bridge *bridge)
|
||||
{
|
||||
bridge->flags &= ~MLX5_ESW_BRIDGE_MCAST_FLAG;
|
||||
mlx5_esw_brige_mcast_global_disable(bridge->br_offloads);
|
||||
}
|
||||
|
|
@ -12,11 +12,26 @@
|
|||
#include <linux/xarray.h>
|
||||
#include "fs_core.h"
|
||||
|
||||
#define MLX5_ESW_BRIDGE_INGRESS_TABLE_IGMP_GRP_SIZE 1
|
||||
#define MLX5_ESW_BRIDGE_INGRESS_TABLE_MLD_GRP_SIZE 3
|
||||
#define MLX5_ESW_BRIDGE_INGRESS_TABLE_VLAN_GRP_SIZE 131072
|
||||
#define MLX5_ESW_BRIDGE_INGRESS_TABLE_UNTAGGED_GRP_SIZE 524288
|
||||
#define MLX5_ESW_BRIDGE_INGRESS_TABLE_VLAN_GRP_IDX_FROM 0
|
||||
#define MLX5_ESW_BRIDGE_INGRESS_TABLE_VLAN_GRP_IDX_TO \
|
||||
(MLX5_ESW_BRIDGE_INGRESS_TABLE_VLAN_GRP_SIZE - 1)
|
||||
#define MLX5_ESW_BRIDGE_INGRESS_TABLE_UNTAGGED_GRP_SIZE \
|
||||
(524288 - MLX5_ESW_BRIDGE_INGRESS_TABLE_IGMP_GRP_SIZE - \
|
||||
MLX5_ESW_BRIDGE_INGRESS_TABLE_MLD_GRP_SIZE)
|
||||
|
||||
#define MLX5_ESW_BRIDGE_INGRESS_TABLE_IGMP_GRP_IDX_FROM 0
|
||||
#define MLX5_ESW_BRIDGE_INGRESS_TABLE_IGMP_GRP_IDX_TO \
|
||||
(MLX5_ESW_BRIDGE_INGRESS_TABLE_IGMP_GRP_SIZE - 1)
|
||||
#define MLX5_ESW_BRIDGE_INGRESS_TABLE_MLD_GRP_IDX_FROM \
|
||||
(MLX5_ESW_BRIDGE_INGRESS_TABLE_IGMP_GRP_IDX_TO + 1)
|
||||
#define MLX5_ESW_BRIDGE_INGRESS_TABLE_MLD_GRP_IDX_TO \
|
||||
(MLX5_ESW_BRIDGE_INGRESS_TABLE_MLD_GRP_IDX_FROM + \
|
||||
MLX5_ESW_BRIDGE_INGRESS_TABLE_MLD_GRP_SIZE - 1)
|
||||
#define MLX5_ESW_BRIDGE_INGRESS_TABLE_VLAN_GRP_IDX_FROM \
|
||||
(MLX5_ESW_BRIDGE_INGRESS_TABLE_MLD_GRP_IDX_TO + 1)
|
||||
#define MLX5_ESW_BRIDGE_INGRESS_TABLE_VLAN_GRP_IDX_TO \
|
||||
(MLX5_ESW_BRIDGE_INGRESS_TABLE_VLAN_GRP_IDX_FROM + \
|
||||
MLX5_ESW_BRIDGE_INGRESS_TABLE_VLAN_GRP_SIZE - 1)
|
||||
#define MLX5_ESW_BRIDGE_INGRESS_TABLE_VLAN_FILTER_GRP_IDX_FROM \
|
||||
(MLX5_ESW_BRIDGE_INGRESS_TABLE_VLAN_GRP_IDX_TO + 1)
|
||||
#define MLX5_ESW_BRIDGE_INGRESS_TABLE_VLAN_FILTER_GRP_IDX_TO \
|
||||
|
|
@ -74,6 +89,7 @@ enum {
|
|||
|
||||
enum {
|
||||
MLX5_ESW_BRIDGE_VLAN_FILTERING_FLAG = BIT(0),
|
||||
MLX5_ESW_BRIDGE_MCAST_FLAG = BIT(1),
|
||||
};
|
||||
|
||||
struct mlx5_esw_bridge_fdb_key {
|
||||
|
|
@ -145,4 +161,7 @@ struct mlx5_esw_bridge {
|
|||
u16 vlan_proto;
|
||||
};
|
||||
|
||||
int mlx5_esw_bridge_mcast_enable(struct mlx5_esw_bridge *bridge);
|
||||
void mlx5_esw_bridge_mcast_disable(struct mlx5_esw_bridge *bridge);
|
||||
|
||||
#endif /* _MLX5_ESW_BRIDGE_PRIVATE_ */
|
||||
|
|
|
|||
Loading…
Reference in a new issue