/*
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* Copyright (c) 2016, Mellanox Technologies. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <net/flow_dissector.h>
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#include <net/flow_offload.h>
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#include <net/sch_generic.h>
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#include <net/pkt_cls.h>
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#include <net/tc_act/tc_gact.h>
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#include <net/tc_act/tc_skbedit.h>
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#include <linux/mlx5/fs.h>
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#include <linux/mlx5/device.h>
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#include <linux/rhashtable.h>
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#include <linux/refcount.h>
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#include <linux/completion.h>
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#include <net/tc_act/tc_mirred.h>
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#include <net/tc_act/tc_vlan.h>
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#include <net/tc_act/tc_tunnel_key.h>
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#include <net/tc_act/tc_pedit.h>
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#include <net/tc_act/tc_csum.h>
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#include <net/tc_act/tc_mpls.h>
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#include <net/arp.h>
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#include <net/ipv6_stubs.h>
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#include <net/bareudp.h>
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#include <net/bonding.h>
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#include "en.h"
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#include "en_rep.h"
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#include "en/rep/tc.h"
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#include "en/rep/neigh.h"
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#include "en_tc.h"
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#include "eswitch.h"
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#include "fs_core.h"
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#include "en/port.h"
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#include "en/tc_tun.h"
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#include "en/mapping.h"
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#include "en/tc_ct.h"
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#include "en/mod_hdr.h"
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#include "lib/devcom.h"
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#include "lib/geneve.h"
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#include "lib/fs_chains.h"
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#include "diag/en_tc_tracepoint.h"
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#include <asm/div64.h>
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#define nic_chains(priv) ((priv)->fs.tc.chains)
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#define MLX5_MH_ACT_SZ MLX5_UN_SZ_BYTES(set_add_copy_action_in_auto)
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#define MLX5E_TC_FLOW_BASE (MLX5E_TC_FLAG_LAST_EXPORTED_BIT + 1)
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enum {
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MLX5E_TC_FLOW_FLAG_INGRESS = MLX5E_TC_FLAG_INGRESS_BIT,
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MLX5E_TC_FLOW_FLAG_EGRESS = MLX5E_TC_FLAG_EGRESS_BIT,
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MLX5E_TC_FLOW_FLAG_ESWITCH = MLX5E_TC_FLAG_ESW_OFFLOAD_BIT,
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MLX5E_TC_FLOW_FLAG_FT = MLX5E_TC_FLAG_FT_OFFLOAD_BIT,
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MLX5E_TC_FLOW_FLAG_NIC = MLX5E_TC_FLAG_NIC_OFFLOAD_BIT,
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MLX5E_TC_FLOW_FLAG_OFFLOADED = MLX5E_TC_FLOW_BASE,
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MLX5E_TC_FLOW_FLAG_HAIRPIN = MLX5E_TC_FLOW_BASE + 1,
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MLX5E_TC_FLOW_FLAG_HAIRPIN_RSS = MLX5E_TC_FLOW_BASE + 2,
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MLX5E_TC_FLOW_FLAG_SLOW = MLX5E_TC_FLOW_BASE + 3,
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MLX5E_TC_FLOW_FLAG_DUP = MLX5E_TC_FLOW_BASE + 4,
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MLX5E_TC_FLOW_FLAG_NOT_READY = MLX5E_TC_FLOW_BASE + 5,
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MLX5E_TC_FLOW_FLAG_DELETED = MLX5E_TC_FLOW_BASE + 6,
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MLX5E_TC_FLOW_FLAG_CT = MLX5E_TC_FLOW_BASE + 7,
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MLX5E_TC_FLOW_FLAG_L3_TO_L2_DECAP = MLX5E_TC_FLOW_BASE + 8,
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};
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#define MLX5E_TC_MAX_SPLITS 1
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/* Helper struct for accessing a struct containing list_head array.
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* Containing struct
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* |- Helper array
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* [0] Helper item 0
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* |- list_head item 0
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* |- index (0)
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* [1] Helper item 1
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* |- list_head item 1
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* |- index (1)
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* To access the containing struct from one of the list_head items:
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* 1. Get the helper item from the list_head item using
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* helper item =
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* container_of(list_head item, helper struct type, list_head field)
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* 2. Get the contining struct from the helper item and its index in the array:
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* containing struct =
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* container_of(helper item, containing struct type, helper field[index])
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*/
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struct encap_flow_item {
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struct mlx5e_encap_entry *e; /* attached encap instance */
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struct list_head list;
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int index;
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};
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struct mlx5e_tc_flow {
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struct rhash_head node;
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struct mlx5e_priv *priv;
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u64 cookie;
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unsigned long flags;
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struct mlx5_flow_handle *rule[MLX5E_TC_MAX_SPLITS + 1];
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/* flows sharing the same reformat object - currently mpls decap */
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struct list_head l3_to_l2_reformat;
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struct mlx5e_decap_entry *decap_reformat;
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/* Flow can be associated with multiple encap IDs.
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* The number of encaps is bounded by the number of supported
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* destinations.
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*/
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struct encap_flow_item encaps[MLX5_MAX_FLOW_FWD_VPORTS];
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struct mlx5e_tc_flow *peer_flow;
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struct mlx5e_mod_hdr_handle *mh; /* attached mod header instance */
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struct mlx5e_hairpin_entry *hpe; /* attached hairpin instance */
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struct list_head hairpin; /* flows sharing the same hairpin */
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struct list_head peer; /* flows with peer flow */
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struct list_head unready; /* flows not ready to be offloaded (e.g due to missing route) */
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struct net_device *orig_dev; /* netdev adding flow first */
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int tmp_efi_index;
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struct list_head tmp_list; /* temporary flow list used by neigh update */
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refcount_t refcnt;
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struct rcu_head rcu_head;
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struct completion init_done;
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int tunnel_id; /* the mapped tunnel id of this flow */
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struct mlx5_flow_attr *attr;
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};
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struct mlx5e_tc_flow_parse_attr {
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const struct ip_tunnel_info *tun_info[MLX5_MAX_FLOW_FWD_VPORTS];
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struct net_device *filter_dev;
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struct mlx5_flow_spec spec;
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struct mlx5e_tc_mod_hdr_acts mod_hdr_acts;
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int mirred_ifindex[MLX5_MAX_FLOW_FWD_VPORTS];
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struct ethhdr eth;
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};
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#define MLX5E_TC_TABLE_NUM_GROUPS 4
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#define MLX5E_TC_TABLE_MAX_GROUP_SIZE BIT(18)
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struct mlx5e_tc_attr_to_reg_mapping mlx5e_tc_attr_to_reg_mappings[] = {
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[CHAIN_TO_REG] = {
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.mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_0,
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.moffset = 0,
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.mlen = 2,
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},
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[TUNNEL_TO_REG] = {
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.mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_1,
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.moffset = 1,
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.mlen = 3,
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.soffset = MLX5_BYTE_OFF(fte_match_param,
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misc_parameters_2.metadata_reg_c_1),
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},
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[ZONE_TO_REG] = zone_to_reg_ct,
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[ZONE_RESTORE_TO_REG] = zone_restore_to_reg_ct,
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[CTSTATE_TO_REG] = ctstate_to_reg_ct,
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[MARK_TO_REG] = mark_to_reg_ct,
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[LABELS_TO_REG] = labels_to_reg_ct,
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[FTEID_TO_REG] = fteid_to_reg_ct,
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/* For NIC rules we store the retore metadata directly
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* into reg_b that is passed to SW since we don't
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* jump between steering domains.
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*/
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[NIC_CHAIN_TO_REG] = {
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.mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_B,
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.moffset = 0,
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.mlen = 2,
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},
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[NIC_ZONE_RESTORE_TO_REG] = nic_zone_restore_to_reg_ct,
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};
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static void mlx5e_put_flow_tunnel_id(struct mlx5e_tc_flow *flow);
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void
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mlx5e_tc_match_to_reg_match(struct mlx5_flow_spec *spec,
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enum mlx5e_tc_attr_to_reg type,
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u32 data,
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u32 mask)
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{
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int soffset = mlx5e_tc_attr_to_reg_mappings[type].soffset;
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int match_len = mlx5e_tc_attr_to_reg_mappings[type].mlen;
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void *headers_c = spec->match_criteria;
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void *headers_v = spec->match_value;
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void *fmask, *fval;
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fmask = headers_c + soffset;
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fval = headers_v + soffset;
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mask = (__force u32)(cpu_to_be32(mask)) >> (32 - (match_len * 8));
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data = (__force u32)(cpu_to_be32(data)) >> (32 - (match_len * 8));
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memcpy(fmask, &mask, match_len);
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memcpy(fval, &data, match_len);
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spec->match_criteria_enable |= MLX5_MATCH_MISC_PARAMETERS_2;
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}
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void
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mlx5e_tc_match_to_reg_get_match(struct mlx5_flow_spec *spec,
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enum mlx5e_tc_attr_to_reg type,
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u32 *data,
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u32 *mask)
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{
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int soffset = mlx5e_tc_attr_to_reg_mappings[type].soffset;
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int match_len = mlx5e_tc_attr_to_reg_mappings[type].mlen;
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void *headers_c = spec->match_criteria;
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void *headers_v = spec->match_value;
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void *fmask, *fval;
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fmask = headers_c + soffset;
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fval = headers_v + soffset;
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memcpy(mask, fmask, match_len);
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memcpy(data, fval, match_len);
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*mask = be32_to_cpu((__force __be32)(*mask << (32 - (match_len * 8))));
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*data = be32_to_cpu((__force __be32)(*data << (32 - (match_len * 8))));
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}
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int
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mlx5e_tc_match_to_reg_set(struct mlx5_core_dev *mdev,
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struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts,
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enum mlx5_flow_namespace_type ns,
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enum mlx5e_tc_attr_to_reg type,
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u32 data)
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{
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int moffset = mlx5e_tc_attr_to_reg_mappings[type].moffset;
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int mfield = mlx5e_tc_attr_to_reg_mappings[type].mfield;
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int mlen = mlx5e_tc_attr_to_reg_mappings[type].mlen;
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char *modact;
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int err;
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err = alloc_mod_hdr_actions(mdev, ns, mod_hdr_acts);
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if (err)
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return err;
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modact = mod_hdr_acts->actions +
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(mod_hdr_acts->num_actions * MLX5_MH_ACT_SZ);
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/* Firmware has 5bit length field and 0 means 32bits */
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if (mlen == 4)
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mlen = 0;
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MLX5_SET(set_action_in, modact, action_type, MLX5_ACTION_TYPE_SET);
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MLX5_SET(set_action_in, modact, field, mfield);
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MLX5_SET(set_action_in, modact, offset, moffset * 8);
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MLX5_SET(set_action_in, modact, length, mlen * 8);
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MLX5_SET(set_action_in, modact, data, data);
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mod_hdr_acts->num_actions++;
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return 0;
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}
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#define esw_offloads_mode(esw) (mlx5_eswitch_mode(esw) == MLX5_ESWITCH_OFFLOADS)
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static struct mlx5_tc_ct_priv *
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get_ct_priv(struct mlx5e_priv *priv)
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{
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struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
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struct mlx5_rep_uplink_priv *uplink_priv;
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struct mlx5e_rep_priv *uplink_rpriv;
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if (esw_offloads_mode(esw)) {
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uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
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uplink_priv = &uplink_rpriv->uplink_priv;
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return uplink_priv->ct_priv;
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}
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return priv->fs.tc.ct;
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}
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struct mlx5_flow_handle *
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mlx5_tc_rule_insert(struct mlx5e_priv *priv,
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struct mlx5_flow_spec *spec,
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struct mlx5_flow_attr *attr)
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{
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struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
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if (esw_offloads_mode(esw))
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return mlx5_eswitch_add_offloaded_rule(esw, spec, attr);
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return mlx5e_add_offloaded_nic_rule(priv, spec, attr);
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}
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void
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mlx5_tc_rule_delete(struct mlx5e_priv *priv,
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struct mlx5_flow_handle *rule,
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struct mlx5_flow_attr *attr)
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{
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struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
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if (esw_offloads_mode(esw)) {
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mlx5_eswitch_del_offloaded_rule(esw, rule, attr);
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return;
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}
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mlx5e_del_offloaded_nic_rule(priv, rule, attr);
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}
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struct mlx5e_hairpin {
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struct mlx5_hairpin *pair;
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struct mlx5_core_dev *func_mdev;
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struct mlx5e_priv *func_priv;
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u32 tdn;
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u32 tirn;
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int num_channels;
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struct mlx5e_rqt indir_rqt;
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u32 indir_tirn[MLX5E_NUM_INDIR_TIRS];
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struct mlx5e_ttc_table ttc;
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};
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struct mlx5e_hairpin_entry {
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/* a node of a hash table which keeps all the hairpin entries */
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struct hlist_node hairpin_hlist;
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/* protects flows list */
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spinlock_t flows_lock;
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/* flows sharing the same hairpin */
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struct list_head flows;
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/* hpe's that were not fully initialized when dead peer update event
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* function traversed them.
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*/
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struct list_head dead_peer_wait_list;
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u16 peer_vhca_id;
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u8 prio;
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struct mlx5e_hairpin *hp;
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refcount_t refcnt;
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struct completion res_ready;
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};
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static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
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struct mlx5e_tc_flow *flow);
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static struct mlx5e_tc_flow *mlx5e_flow_get(struct mlx5e_tc_flow *flow)
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{
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if (!flow || !refcount_inc_not_zero(&flow->refcnt))
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return ERR_PTR(-EINVAL);
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return flow;
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}
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static void mlx5e_flow_put(struct mlx5e_priv *priv,
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struct mlx5e_tc_flow *flow)
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{
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if (refcount_dec_and_test(&flow->refcnt)) {
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mlx5e_tc_del_flow(priv, flow);
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kfree_rcu(flow, rcu_head);
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}
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}
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|
static void __flow_flag_set(struct mlx5e_tc_flow *flow, unsigned long flag)
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{
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/* Complete all memory stores before setting bit. */
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smp_mb__before_atomic();
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set_bit(flag, &flow->flags);
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}
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|
#define flow_flag_set(flow, flag) __flow_flag_set(flow, MLX5E_TC_FLOW_FLAG_##flag)
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static bool __flow_flag_test_and_set(struct mlx5e_tc_flow *flow,
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unsigned long flag)
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{
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/* test_and_set_bit() provides all necessary barriers */
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return test_and_set_bit(flag, &flow->flags);
|
}
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|
#define flow_flag_test_and_set(flow, flag) \
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__flow_flag_test_and_set(flow, \
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MLX5E_TC_FLOW_FLAG_##flag)
|
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static void __flow_flag_clear(struct mlx5e_tc_flow *flow, unsigned long flag)
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{
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/* Complete all memory stores before clearing bit. */
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smp_mb__before_atomic();
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clear_bit(flag, &flow->flags);
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}
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#define flow_flag_clear(flow, flag) __flow_flag_clear(flow, \
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MLX5E_TC_FLOW_FLAG_##flag)
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static bool __flow_flag_test(struct mlx5e_tc_flow *flow, unsigned long flag)
|
{
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bool ret = test_bit(flag, &flow->flags);
|
|
/* Read fields of flow structure only after checking flags. */
|
smp_mb__after_atomic();
|
return ret;
|
}
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#define flow_flag_test(flow, flag) __flow_flag_test(flow, \
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MLX5E_TC_FLOW_FLAG_##flag)
|
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bool mlx5e_is_eswitch_flow(struct mlx5e_tc_flow *flow)
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{
|
return flow_flag_test(flow, ESWITCH);
|
}
|
|
static bool mlx5e_is_ft_flow(struct mlx5e_tc_flow *flow)
|
{
|
return flow_flag_test(flow, FT);
|
}
|
|
static bool mlx5e_is_offloaded_flow(struct mlx5e_tc_flow *flow)
|
{
|
return flow_flag_test(flow, OFFLOADED);
|
}
|
|
static int get_flow_name_space(struct mlx5e_tc_flow *flow)
|
{
|
return mlx5e_is_eswitch_flow(flow) ?
|
MLX5_FLOW_NAMESPACE_FDB : MLX5_FLOW_NAMESPACE_KERNEL;
|
}
|
|
static struct mod_hdr_tbl *
|
get_mod_hdr_table(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow)
|
{
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
|
return get_flow_name_space(flow) == MLX5_FLOW_NAMESPACE_FDB ?
|
&esw->offloads.mod_hdr :
|
&priv->fs.tc.mod_hdr;
|
}
|
|
static int mlx5e_attach_mod_hdr(struct mlx5e_priv *priv,
|
struct mlx5e_tc_flow *flow,
|
struct mlx5e_tc_flow_parse_attr *parse_attr)
|
{
|
struct mlx5_modify_hdr *modify_hdr;
|
struct mlx5e_mod_hdr_handle *mh;
|
|
mh = mlx5e_mod_hdr_attach(priv->mdev, get_mod_hdr_table(priv, flow),
|
get_flow_name_space(flow),
|
&parse_attr->mod_hdr_acts);
|
if (IS_ERR(mh))
|
return PTR_ERR(mh);
|
|
modify_hdr = mlx5e_mod_hdr_get(mh);
|
flow->attr->modify_hdr = modify_hdr;
|
flow->mh = mh;
|
|
return 0;
|
}
|
|
static void mlx5e_detach_mod_hdr(struct mlx5e_priv *priv,
|
struct mlx5e_tc_flow *flow)
|
{
|
/* flow wasn't fully initialized */
|
if (!flow->mh)
|
return;
|
|
mlx5e_mod_hdr_detach(priv->mdev, get_mod_hdr_table(priv, flow),
|
flow->mh);
|
flow->mh = NULL;
|
}
|
|
static
|
struct mlx5_core_dev *mlx5e_hairpin_get_mdev(struct net *net, int ifindex)
|
{
|
struct mlx5_core_dev *mdev;
|
struct net_device *netdev;
|
struct mlx5e_priv *priv;
|
|
netdev = dev_get_by_index(net, ifindex);
|
if (!netdev)
|
return ERR_PTR(-ENODEV);
|
|
priv = netdev_priv(netdev);
|
mdev = priv->mdev;
|
dev_put(netdev);
|
|
/* Mirred tc action holds a refcount on the ifindex net_device (see
|
* net/sched/act_mirred.c:tcf_mirred_get_dev). So, it's okay to continue using mdev
|
* after dev_put(netdev), while we're in the context of adding a tc flow.
|
*
|
* The mdev pointer corresponds to the peer/out net_device of a hairpin. It is then
|
* stored in a hairpin object, which exists until all flows, that refer to it, get
|
* removed.
|
*
|
* On the other hand, after a hairpin object has been created, the peer net_device may
|
* be removed/unbound while there are still some hairpin flows that are using it. This
|
* case is handled by mlx5e_tc_hairpin_update_dead_peer, which is hooked to
|
* NETDEV_UNREGISTER event of the peer net_device.
|
*/
|
return mdev;
|
}
|
|
static int mlx5e_hairpin_create_transport(struct mlx5e_hairpin *hp)
|
{
|
u32 in[MLX5_ST_SZ_DW(create_tir_in)] = {};
|
void *tirc;
|
int err;
|
|
err = mlx5_core_alloc_transport_domain(hp->func_mdev, &hp->tdn);
|
if (err)
|
goto alloc_tdn_err;
|
|
tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
|
|
MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_DIRECT);
|
MLX5_SET(tirc, tirc, inline_rqn, hp->pair->rqn[0]);
|
MLX5_SET(tirc, tirc, transport_domain, hp->tdn);
|
|
err = mlx5_core_create_tir(hp->func_mdev, in, &hp->tirn);
|
if (err)
|
goto create_tir_err;
|
|
return 0;
|
|
create_tir_err:
|
mlx5_core_dealloc_transport_domain(hp->func_mdev, hp->tdn);
|
alloc_tdn_err:
|
return err;
|
}
|
|
static void mlx5e_hairpin_destroy_transport(struct mlx5e_hairpin *hp)
|
{
|
mlx5_core_destroy_tir(hp->func_mdev, hp->tirn);
|
mlx5_core_dealloc_transport_domain(hp->func_mdev, hp->tdn);
|
}
|
|
static void mlx5e_hairpin_fill_rqt_rqns(struct mlx5e_hairpin *hp, void *rqtc)
|
{
|
u32 indirection_rqt[MLX5E_INDIR_RQT_SIZE], rqn;
|
struct mlx5e_priv *priv = hp->func_priv;
|
int i, ix, sz = MLX5E_INDIR_RQT_SIZE;
|
|
mlx5e_build_default_indir_rqt(indirection_rqt, sz,
|
hp->num_channels);
|
|
for (i = 0; i < sz; i++) {
|
ix = i;
|
if (priv->rss_params.hfunc == ETH_RSS_HASH_XOR)
|
ix = mlx5e_bits_invert(i, ilog2(sz));
|
ix = indirection_rqt[ix];
|
rqn = hp->pair->rqn[ix];
|
MLX5_SET(rqtc, rqtc, rq_num[i], rqn);
|
}
|
}
|
|
static int mlx5e_hairpin_create_indirect_rqt(struct mlx5e_hairpin *hp)
|
{
|
int inlen, err, sz = MLX5E_INDIR_RQT_SIZE;
|
struct mlx5e_priv *priv = hp->func_priv;
|
struct mlx5_core_dev *mdev = priv->mdev;
|
void *rqtc;
|
u32 *in;
|
|
inlen = MLX5_ST_SZ_BYTES(create_rqt_in) + sizeof(u32) * sz;
|
in = kvzalloc(inlen, GFP_KERNEL);
|
if (!in)
|
return -ENOMEM;
|
|
rqtc = MLX5_ADDR_OF(create_rqt_in, in, rqt_context);
|
|
MLX5_SET(rqtc, rqtc, rqt_actual_size, sz);
|
MLX5_SET(rqtc, rqtc, rqt_max_size, sz);
|
|
mlx5e_hairpin_fill_rqt_rqns(hp, rqtc);
|
|
err = mlx5_core_create_rqt(mdev, in, inlen, &hp->indir_rqt.rqtn);
|
if (!err)
|
hp->indir_rqt.enabled = true;
|
|
kvfree(in);
|
return err;
|
}
|
|
static int mlx5e_hairpin_create_indirect_tirs(struct mlx5e_hairpin *hp)
|
{
|
struct mlx5e_priv *priv = hp->func_priv;
|
u32 in[MLX5_ST_SZ_DW(create_tir_in)];
|
int tt, i, err;
|
void *tirc;
|
|
for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++) {
|
struct mlx5e_tirc_config ttconfig = mlx5e_tirc_get_default_config(tt);
|
|
memset(in, 0, MLX5_ST_SZ_BYTES(create_tir_in));
|
tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
|
|
MLX5_SET(tirc, tirc, transport_domain, hp->tdn);
|
MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_INDIRECT);
|
MLX5_SET(tirc, tirc, indirect_table, hp->indir_rqt.rqtn);
|
mlx5e_build_indir_tir_ctx_hash(&priv->rss_params, &ttconfig, tirc, false);
|
|
err = mlx5_core_create_tir(hp->func_mdev, in,
|
&hp->indir_tirn[tt]);
|
if (err) {
|
mlx5_core_warn(hp->func_mdev, "create indirect tirs failed, %d\n", err);
|
goto err_destroy_tirs;
|
}
|
}
|
return 0;
|
|
err_destroy_tirs:
|
for (i = 0; i < tt; i++)
|
mlx5_core_destroy_tir(hp->func_mdev, hp->indir_tirn[i]);
|
return err;
|
}
|
|
static void mlx5e_hairpin_destroy_indirect_tirs(struct mlx5e_hairpin *hp)
|
{
|
int tt;
|
|
for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++)
|
mlx5_core_destroy_tir(hp->func_mdev, hp->indir_tirn[tt]);
|
}
|
|
static void mlx5e_hairpin_set_ttc_params(struct mlx5e_hairpin *hp,
|
struct ttc_params *ttc_params)
|
{
|
struct mlx5_flow_table_attr *ft_attr = &ttc_params->ft_attr;
|
int tt;
|
|
memset(ttc_params, 0, sizeof(*ttc_params));
|
|
ttc_params->any_tt_tirn = hp->tirn;
|
|
for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++)
|
ttc_params->indir_tirn[tt] = hp->indir_tirn[tt];
|
|
ft_attr->max_fte = MLX5E_TTC_TABLE_SIZE;
|
ft_attr->level = MLX5E_TC_TTC_FT_LEVEL;
|
ft_attr->prio = MLX5E_TC_PRIO;
|
}
|
|
static int mlx5e_hairpin_rss_init(struct mlx5e_hairpin *hp)
|
{
|
struct mlx5e_priv *priv = hp->func_priv;
|
struct ttc_params ttc_params;
|
int err;
|
|
err = mlx5e_hairpin_create_indirect_rqt(hp);
|
if (err)
|
return err;
|
|
err = mlx5e_hairpin_create_indirect_tirs(hp);
|
if (err)
|
goto err_create_indirect_tirs;
|
|
mlx5e_hairpin_set_ttc_params(hp, &ttc_params);
|
err = mlx5e_create_ttc_table(priv, &ttc_params, &hp->ttc);
|
if (err)
|
goto err_create_ttc_table;
|
|
netdev_dbg(priv->netdev, "add hairpin: using %d channels rss ttc table id %x\n",
|
hp->num_channels, hp->ttc.ft.t->id);
|
|
return 0;
|
|
err_create_ttc_table:
|
mlx5e_hairpin_destroy_indirect_tirs(hp);
|
err_create_indirect_tirs:
|
mlx5e_destroy_rqt(priv, &hp->indir_rqt);
|
|
return err;
|
}
|
|
static void mlx5e_hairpin_rss_cleanup(struct mlx5e_hairpin *hp)
|
{
|
struct mlx5e_priv *priv = hp->func_priv;
|
|
mlx5e_destroy_ttc_table(priv, &hp->ttc);
|
mlx5e_hairpin_destroy_indirect_tirs(hp);
|
mlx5e_destroy_rqt(priv, &hp->indir_rqt);
|
}
|
|
static struct mlx5e_hairpin *
|
mlx5e_hairpin_create(struct mlx5e_priv *priv, struct mlx5_hairpin_params *params,
|
int peer_ifindex)
|
{
|
struct mlx5_core_dev *func_mdev, *peer_mdev;
|
struct mlx5e_hairpin *hp;
|
struct mlx5_hairpin *pair;
|
int err;
|
|
hp = kzalloc(sizeof(*hp), GFP_KERNEL);
|
if (!hp)
|
return ERR_PTR(-ENOMEM);
|
|
func_mdev = priv->mdev;
|
peer_mdev = mlx5e_hairpin_get_mdev(dev_net(priv->netdev), peer_ifindex);
|
if (IS_ERR(peer_mdev)) {
|
err = PTR_ERR(peer_mdev);
|
goto create_pair_err;
|
}
|
|
pair = mlx5_core_hairpin_create(func_mdev, peer_mdev, params);
|
if (IS_ERR(pair)) {
|
err = PTR_ERR(pair);
|
goto create_pair_err;
|
}
|
hp->pair = pair;
|
hp->func_mdev = func_mdev;
|
hp->func_priv = priv;
|
hp->num_channels = params->num_channels;
|
|
err = mlx5e_hairpin_create_transport(hp);
|
if (err)
|
goto create_transport_err;
|
|
if (hp->num_channels > 1) {
|
err = mlx5e_hairpin_rss_init(hp);
|
if (err)
|
goto rss_init_err;
|
}
|
|
return hp;
|
|
rss_init_err:
|
mlx5e_hairpin_destroy_transport(hp);
|
create_transport_err:
|
mlx5_core_hairpin_destroy(hp->pair);
|
create_pair_err:
|
kfree(hp);
|
return ERR_PTR(err);
|
}
|
|
static void mlx5e_hairpin_destroy(struct mlx5e_hairpin *hp)
|
{
|
if (hp->num_channels > 1)
|
mlx5e_hairpin_rss_cleanup(hp);
|
mlx5e_hairpin_destroy_transport(hp);
|
mlx5_core_hairpin_destroy(hp->pair);
|
kvfree(hp);
|
}
|
|
static inline u32 hash_hairpin_info(u16 peer_vhca_id, u8 prio)
|
{
|
return (peer_vhca_id << 16 | prio);
|
}
|
|
static struct mlx5e_hairpin_entry *mlx5e_hairpin_get(struct mlx5e_priv *priv,
|
u16 peer_vhca_id, u8 prio)
|
{
|
struct mlx5e_hairpin_entry *hpe;
|
u32 hash_key = hash_hairpin_info(peer_vhca_id, prio);
|
|
hash_for_each_possible(priv->fs.tc.hairpin_tbl, hpe,
|
hairpin_hlist, hash_key) {
|
if (hpe->peer_vhca_id == peer_vhca_id && hpe->prio == prio) {
|
refcount_inc(&hpe->refcnt);
|
return hpe;
|
}
|
}
|
|
return NULL;
|
}
|
|
static void mlx5e_hairpin_put(struct mlx5e_priv *priv,
|
struct mlx5e_hairpin_entry *hpe)
|
{
|
/* no more hairpin flows for us, release the hairpin pair */
|
if (!refcount_dec_and_mutex_lock(&hpe->refcnt, &priv->fs.tc.hairpin_tbl_lock))
|
return;
|
hash_del(&hpe->hairpin_hlist);
|
mutex_unlock(&priv->fs.tc.hairpin_tbl_lock);
|
|
if (!IS_ERR_OR_NULL(hpe->hp)) {
|
netdev_dbg(priv->netdev, "del hairpin: peer %s\n",
|
dev_name(hpe->hp->pair->peer_mdev->device));
|
|
mlx5e_hairpin_destroy(hpe->hp);
|
}
|
|
WARN_ON(!list_empty(&hpe->flows));
|
kfree(hpe);
|
}
|
|
#define UNKNOWN_MATCH_PRIO 8
|
|
static int mlx5e_hairpin_get_prio(struct mlx5e_priv *priv,
|
struct mlx5_flow_spec *spec, u8 *match_prio,
|
struct netlink_ext_ack *extack)
|
{
|
void *headers_c, *headers_v;
|
u8 prio_val, prio_mask = 0;
|
bool vlan_present;
|
|
#ifdef CONFIG_MLX5_CORE_EN_DCB
|
if (priv->dcbx_dp.trust_state != MLX5_QPTS_TRUST_PCP) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"only PCP trust state supported for hairpin");
|
return -EOPNOTSUPP;
|
}
|
#endif
|
headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, outer_headers);
|
headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers);
|
|
vlan_present = MLX5_GET(fte_match_set_lyr_2_4, headers_v, cvlan_tag);
|
if (vlan_present) {
|
prio_mask = MLX5_GET(fte_match_set_lyr_2_4, headers_c, first_prio);
|
prio_val = MLX5_GET(fte_match_set_lyr_2_4, headers_v, first_prio);
|
}
|
|
if (!vlan_present || !prio_mask) {
|
prio_val = UNKNOWN_MATCH_PRIO;
|
} else if (prio_mask != 0x7) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"masked priority match not supported for hairpin");
|
return -EOPNOTSUPP;
|
}
|
|
*match_prio = prio_val;
|
return 0;
|
}
|
|
static int mlx5e_hairpin_flow_add(struct mlx5e_priv *priv,
|
struct mlx5e_tc_flow *flow,
|
struct mlx5e_tc_flow_parse_attr *parse_attr,
|
struct netlink_ext_ack *extack)
|
{
|
int peer_ifindex = parse_attr->mirred_ifindex[0];
|
struct mlx5_hairpin_params params;
|
struct mlx5_core_dev *peer_mdev;
|
struct mlx5e_hairpin_entry *hpe;
|
struct mlx5e_hairpin *hp;
|
u64 link_speed64;
|
u32 link_speed;
|
u8 match_prio;
|
u16 peer_id;
|
int err;
|
|
peer_mdev = mlx5e_hairpin_get_mdev(dev_net(priv->netdev), peer_ifindex);
|
if (IS_ERR(peer_mdev)) {
|
NL_SET_ERR_MSG_MOD(extack, "invalid ifindex of mirred device");
|
return PTR_ERR(peer_mdev);
|
}
|
|
if (!MLX5_CAP_GEN(priv->mdev, hairpin) || !MLX5_CAP_GEN(peer_mdev, hairpin)) {
|
NL_SET_ERR_MSG_MOD(extack, "hairpin is not supported");
|
return -EOPNOTSUPP;
|
}
|
|
peer_id = MLX5_CAP_GEN(peer_mdev, vhca_id);
|
err = mlx5e_hairpin_get_prio(priv, &parse_attr->spec, &match_prio,
|
extack);
|
if (err)
|
return err;
|
|
mutex_lock(&priv->fs.tc.hairpin_tbl_lock);
|
hpe = mlx5e_hairpin_get(priv, peer_id, match_prio);
|
if (hpe) {
|
mutex_unlock(&priv->fs.tc.hairpin_tbl_lock);
|
wait_for_completion(&hpe->res_ready);
|
|
if (IS_ERR(hpe->hp)) {
|
err = -EREMOTEIO;
|
goto out_err;
|
}
|
goto attach_flow;
|
}
|
|
hpe = kzalloc(sizeof(*hpe), GFP_KERNEL);
|
if (!hpe) {
|
mutex_unlock(&priv->fs.tc.hairpin_tbl_lock);
|
return -ENOMEM;
|
}
|
|
spin_lock_init(&hpe->flows_lock);
|
INIT_LIST_HEAD(&hpe->flows);
|
INIT_LIST_HEAD(&hpe->dead_peer_wait_list);
|
hpe->peer_vhca_id = peer_id;
|
hpe->prio = match_prio;
|
refcount_set(&hpe->refcnt, 1);
|
init_completion(&hpe->res_ready);
|
|
hash_add(priv->fs.tc.hairpin_tbl, &hpe->hairpin_hlist,
|
hash_hairpin_info(peer_id, match_prio));
|
mutex_unlock(&priv->fs.tc.hairpin_tbl_lock);
|
|
params.log_data_size = 15;
|
params.log_data_size = min_t(u8, params.log_data_size,
|
MLX5_CAP_GEN(priv->mdev, log_max_hairpin_wq_data_sz));
|
params.log_data_size = max_t(u8, params.log_data_size,
|
MLX5_CAP_GEN(priv->mdev, log_min_hairpin_wq_data_sz));
|
|
params.log_num_packets = params.log_data_size -
|
MLX5_MPWRQ_MIN_LOG_STRIDE_SZ(priv->mdev);
|
params.log_num_packets = min_t(u8, params.log_num_packets,
|
MLX5_CAP_GEN(priv->mdev, log_max_hairpin_num_packets));
|
|
params.q_counter = priv->q_counter;
|
/* set hairpin pair per each 50Gbs share of the link */
|
mlx5e_port_max_linkspeed(priv->mdev, &link_speed);
|
link_speed = max_t(u32, link_speed, 50000);
|
link_speed64 = link_speed;
|
do_div(link_speed64, 50000);
|
params.num_channels = link_speed64;
|
|
hp = mlx5e_hairpin_create(priv, ¶ms, peer_ifindex);
|
hpe->hp = hp;
|
complete_all(&hpe->res_ready);
|
if (IS_ERR(hp)) {
|
err = PTR_ERR(hp);
|
goto out_err;
|
}
|
|
netdev_dbg(priv->netdev, "add hairpin: tirn %x rqn %x peer %s sqn %x prio %d (log) data %d packets %d\n",
|
hp->tirn, hp->pair->rqn[0],
|
dev_name(hp->pair->peer_mdev->device),
|
hp->pair->sqn[0], match_prio, params.log_data_size, params.log_num_packets);
|
|
attach_flow:
|
if (hpe->hp->num_channels > 1) {
|
flow_flag_set(flow, HAIRPIN_RSS);
|
flow->attr->nic_attr->hairpin_ft = hpe->hp->ttc.ft.t;
|
} else {
|
flow->attr->nic_attr->hairpin_tirn = hpe->hp->tirn;
|
}
|
|
flow->hpe = hpe;
|
spin_lock(&hpe->flows_lock);
|
list_add(&flow->hairpin, &hpe->flows);
|
spin_unlock(&hpe->flows_lock);
|
|
return 0;
|
|
out_err:
|
mlx5e_hairpin_put(priv, hpe);
|
return err;
|
}
|
|
static void mlx5e_hairpin_flow_del(struct mlx5e_priv *priv,
|
struct mlx5e_tc_flow *flow)
|
{
|
/* flow wasn't fully initialized */
|
if (!flow->hpe)
|
return;
|
|
spin_lock(&flow->hpe->flows_lock);
|
list_del(&flow->hairpin);
|
spin_unlock(&flow->hpe->flows_lock);
|
|
mlx5e_hairpin_put(priv, flow->hpe);
|
flow->hpe = NULL;
|
}
|
|
struct mlx5_flow_handle *
|
mlx5e_add_offloaded_nic_rule(struct mlx5e_priv *priv,
|
struct mlx5_flow_spec *spec,
|
struct mlx5_flow_attr *attr)
|
{
|
struct mlx5_flow_context *flow_context = &spec->flow_context;
|
struct mlx5_fs_chains *nic_chains = nic_chains(priv);
|
struct mlx5_nic_flow_attr *nic_attr = attr->nic_attr;
|
struct mlx5e_tc_table *tc = &priv->fs.tc;
|
struct mlx5_flow_destination dest[2] = {};
|
struct mlx5_flow_act flow_act = {
|
.action = attr->action,
|
.flags = FLOW_ACT_NO_APPEND,
|
};
|
struct mlx5_flow_handle *rule;
|
struct mlx5_flow_table *ft;
|
int dest_ix = 0;
|
|
flow_context->flags |= FLOW_CONTEXT_HAS_TAG;
|
flow_context->flow_tag = nic_attr->flow_tag;
|
|
if (attr->dest_ft) {
|
dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
|
dest[dest_ix].ft = attr->dest_ft;
|
dest_ix++;
|
} else if (nic_attr->hairpin_ft) {
|
dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
|
dest[dest_ix].ft = nic_attr->hairpin_ft;
|
dest_ix++;
|
} else if (nic_attr->hairpin_tirn) {
|
dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_TIR;
|
dest[dest_ix].tir_num = nic_attr->hairpin_tirn;
|
dest_ix++;
|
} else if (attr->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
|
dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
|
if (attr->dest_chain) {
|
dest[dest_ix].ft = mlx5_chains_get_table(nic_chains,
|
attr->dest_chain, 1,
|
MLX5E_TC_FT_LEVEL);
|
if (IS_ERR(dest[dest_ix].ft))
|
return ERR_CAST(dest[dest_ix].ft);
|
} else {
|
dest[dest_ix].ft = priv->fs.vlan.ft.t;
|
}
|
dest_ix++;
|
}
|
|
if (dest[0].type == MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE &&
|
MLX5_CAP_FLOWTABLE_NIC_RX(priv->mdev, ignore_flow_level))
|
flow_act.flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
|
|
if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
|
dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
|
dest[dest_ix].counter_id = mlx5_fc_id(attr->counter);
|
dest_ix++;
|
}
|
|
if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
|
flow_act.modify_hdr = attr->modify_hdr;
|
|
mutex_lock(&tc->t_lock);
|
if (IS_ERR_OR_NULL(tc->t)) {
|
/* Create the root table here if doesn't exist yet */
|
tc->t =
|
mlx5_chains_get_table(nic_chains, 0, 1, MLX5E_TC_FT_LEVEL);
|
|
if (IS_ERR(tc->t)) {
|
mutex_unlock(&tc->t_lock);
|
netdev_err(priv->netdev,
|
"Failed to create tc offload table\n");
|
rule = ERR_CAST(priv->fs.tc.t);
|
goto err_ft_get;
|
}
|
}
|
mutex_unlock(&tc->t_lock);
|
|
if (attr->chain || attr->prio)
|
ft = mlx5_chains_get_table(nic_chains,
|
attr->chain, attr->prio,
|
MLX5E_TC_FT_LEVEL);
|
else
|
ft = attr->ft;
|
|
if (IS_ERR(ft)) {
|
rule = ERR_CAST(ft);
|
goto err_ft_get;
|
}
|
|
if (attr->outer_match_level != MLX5_MATCH_NONE)
|
spec->match_criteria_enable |= MLX5_MATCH_OUTER_HEADERS;
|
|
rule = mlx5_add_flow_rules(ft, spec,
|
&flow_act, dest, dest_ix);
|
if (IS_ERR(rule))
|
goto err_rule;
|
|
return rule;
|
|
err_rule:
|
if (attr->chain || attr->prio)
|
mlx5_chains_put_table(nic_chains,
|
attr->chain, attr->prio,
|
MLX5E_TC_FT_LEVEL);
|
err_ft_get:
|
if (attr->dest_chain)
|
mlx5_chains_put_table(nic_chains,
|
attr->dest_chain, 1,
|
MLX5E_TC_FT_LEVEL);
|
|
return ERR_CAST(rule);
|
}
|
|
static int
|
mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv,
|
struct mlx5e_tc_flow_parse_attr *parse_attr,
|
struct mlx5e_tc_flow *flow,
|
struct netlink_ext_ack *extack)
|
{
|
struct mlx5_flow_attr *attr = flow->attr;
|
struct mlx5_core_dev *dev = priv->mdev;
|
struct mlx5_fc *counter = NULL;
|
int err;
|
|
if (flow_flag_test(flow, HAIRPIN)) {
|
err = mlx5e_hairpin_flow_add(priv, flow, parse_attr, extack);
|
if (err)
|
return err;
|
}
|
|
if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
|
counter = mlx5_fc_create(dev, true);
|
if (IS_ERR(counter))
|
return PTR_ERR(counter);
|
|
attr->counter = counter;
|
}
|
|
if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
|
err = mlx5e_attach_mod_hdr(priv, flow, parse_attr);
|
dealloc_mod_hdr_actions(&parse_attr->mod_hdr_acts);
|
if (err)
|
return err;
|
}
|
|
if (flow_flag_test(flow, CT))
|
flow->rule[0] = mlx5_tc_ct_flow_offload(get_ct_priv(priv), flow, &parse_attr->spec,
|
attr, &parse_attr->mod_hdr_acts);
|
else
|
flow->rule[0] = mlx5e_add_offloaded_nic_rule(priv, &parse_attr->spec,
|
attr);
|
|
return PTR_ERR_OR_ZERO(flow->rule[0]);
|
}
|
|
void mlx5e_del_offloaded_nic_rule(struct mlx5e_priv *priv,
|
struct mlx5_flow_handle *rule,
|
struct mlx5_flow_attr *attr)
|
{
|
struct mlx5_fs_chains *nic_chains = nic_chains(priv);
|
|
mlx5_del_flow_rules(rule);
|
|
if (attr->chain || attr->prio)
|
mlx5_chains_put_table(nic_chains, attr->chain, attr->prio,
|
MLX5E_TC_FT_LEVEL);
|
|
if (attr->dest_chain)
|
mlx5_chains_put_table(nic_chains, attr->dest_chain, 1,
|
MLX5E_TC_FT_LEVEL);
|
}
|
|
static void mlx5e_tc_del_nic_flow(struct mlx5e_priv *priv,
|
struct mlx5e_tc_flow *flow)
|
{
|
struct mlx5_flow_attr *attr = flow->attr;
|
struct mlx5e_tc_table *tc = &priv->fs.tc;
|
|
flow_flag_clear(flow, OFFLOADED);
|
|
if (flow_flag_test(flow, CT))
|
mlx5_tc_ct_delete_flow(get_ct_priv(flow->priv), flow, attr);
|
else if (!IS_ERR_OR_NULL(flow->rule[0]))
|
mlx5e_del_offloaded_nic_rule(priv, flow->rule[0], attr);
|
|
/* Remove root table if no rules are left to avoid
|
* extra steering hops.
|
*/
|
mutex_lock(&priv->fs.tc.t_lock);
|
if (!mlx5e_tc_num_filters(priv, MLX5_TC_FLAG(NIC_OFFLOAD)) &&
|
!IS_ERR_OR_NULL(tc->t)) {
|
mlx5_chains_put_table(nic_chains(priv), 0, 1, MLX5E_TC_FT_LEVEL);
|
priv->fs.tc.t = NULL;
|
}
|
mutex_unlock(&priv->fs.tc.t_lock);
|
|
kvfree(attr->parse_attr);
|
|
if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
|
mlx5e_detach_mod_hdr(priv, flow);
|
|
mlx5_fc_destroy(priv->mdev, attr->counter);
|
|
if (flow_flag_test(flow, HAIRPIN))
|
mlx5e_hairpin_flow_del(priv, flow);
|
|
kfree(flow->attr);
|
}
|
|
static void mlx5e_detach_encap(struct mlx5e_priv *priv,
|
struct mlx5e_tc_flow *flow, int out_index);
|
|
static int mlx5e_attach_encap(struct mlx5e_priv *priv,
|
struct mlx5e_tc_flow *flow,
|
struct net_device *mirred_dev,
|
int out_index,
|
struct netlink_ext_ack *extack,
|
struct net_device **encap_dev,
|
bool *encap_valid);
|
static int mlx5e_attach_decap(struct mlx5e_priv *priv,
|
struct mlx5e_tc_flow *flow,
|
struct netlink_ext_ack *extack);
|
static void mlx5e_detach_decap(struct mlx5e_priv *priv,
|
struct mlx5e_tc_flow *flow);
|
|
static struct mlx5_flow_handle *
|
mlx5e_tc_offload_fdb_rules(struct mlx5_eswitch *esw,
|
struct mlx5e_tc_flow *flow,
|
struct mlx5_flow_spec *spec,
|
struct mlx5_flow_attr *attr)
|
{
|
struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts;
|
struct mlx5_flow_handle *rule;
|
|
if (attr->flags & MLX5_ESW_ATTR_FLAG_SLOW_PATH)
|
return mlx5_eswitch_add_offloaded_rule(esw, spec, attr);
|
|
if (flow_flag_test(flow, CT)) {
|
mod_hdr_acts = &attr->parse_attr->mod_hdr_acts;
|
|
return mlx5_tc_ct_flow_offload(get_ct_priv(flow->priv),
|
flow, spec, attr,
|
mod_hdr_acts);
|
}
|
|
rule = mlx5_eswitch_add_offloaded_rule(esw, spec, attr);
|
if (IS_ERR(rule))
|
return rule;
|
|
if (attr->esw_attr->split_count) {
|
flow->rule[1] = mlx5_eswitch_add_fwd_rule(esw, spec, attr);
|
if (IS_ERR(flow->rule[1])) {
|
mlx5_eswitch_del_offloaded_rule(esw, rule, attr);
|
return flow->rule[1];
|
}
|
}
|
|
return rule;
|
}
|
|
static void
|
mlx5e_tc_unoffload_fdb_rules(struct mlx5_eswitch *esw,
|
struct mlx5e_tc_flow *flow,
|
struct mlx5_flow_attr *attr)
|
{
|
flow_flag_clear(flow, OFFLOADED);
|
|
if (attr->flags & MLX5_ESW_ATTR_FLAG_SLOW_PATH)
|
goto offload_rule_0;
|
|
if (flow_flag_test(flow, CT)) {
|
mlx5_tc_ct_delete_flow(get_ct_priv(flow->priv), flow, attr);
|
return;
|
}
|
|
if (attr->esw_attr->split_count)
|
mlx5_eswitch_del_fwd_rule(esw, flow->rule[1], attr);
|
|
offload_rule_0:
|
mlx5_eswitch_del_offloaded_rule(esw, flow->rule[0], attr);
|
}
|
|
static struct mlx5_flow_handle *
|
mlx5e_tc_offload_to_slow_path(struct mlx5_eswitch *esw,
|
struct mlx5e_tc_flow *flow,
|
struct mlx5_flow_spec *spec)
|
{
|
struct mlx5_flow_attr *slow_attr;
|
struct mlx5_flow_handle *rule;
|
|
slow_attr = mlx5_alloc_flow_attr(MLX5_FLOW_NAMESPACE_FDB);
|
if (!slow_attr)
|
return ERR_PTR(-ENOMEM);
|
|
memcpy(slow_attr, flow->attr, ESW_FLOW_ATTR_SZ);
|
slow_attr->action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
|
slow_attr->esw_attr->split_count = 0;
|
slow_attr->flags |= MLX5_ESW_ATTR_FLAG_SLOW_PATH;
|
|
rule = mlx5e_tc_offload_fdb_rules(esw, flow, spec, slow_attr);
|
if (!IS_ERR(rule))
|
flow_flag_set(flow, SLOW);
|
|
kfree(slow_attr);
|
|
return rule;
|
}
|
|
static void
|
mlx5e_tc_unoffload_from_slow_path(struct mlx5_eswitch *esw,
|
struct mlx5e_tc_flow *flow)
|
{
|
struct mlx5_flow_attr *slow_attr;
|
|
slow_attr = mlx5_alloc_flow_attr(MLX5_FLOW_NAMESPACE_FDB);
|
if (!slow_attr) {
|
mlx5_core_warn(flow->priv->mdev, "Unable to alloc attr to unoffload slow path rule\n");
|
return;
|
}
|
|
memcpy(slow_attr, flow->attr, ESW_FLOW_ATTR_SZ);
|
slow_attr->action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
|
slow_attr->esw_attr->split_count = 0;
|
slow_attr->flags |= MLX5_ESW_ATTR_FLAG_SLOW_PATH;
|
mlx5e_tc_unoffload_fdb_rules(esw, flow, slow_attr);
|
flow_flag_clear(flow, SLOW);
|
kfree(slow_attr);
|
}
|
|
/* Caller must obtain uplink_priv->unready_flows_lock mutex before calling this
|
* function.
|
*/
|
static void unready_flow_add(struct mlx5e_tc_flow *flow,
|
struct list_head *unready_flows)
|
{
|
flow_flag_set(flow, NOT_READY);
|
list_add_tail(&flow->unready, unready_flows);
|
}
|
|
/* Caller must obtain uplink_priv->unready_flows_lock mutex before calling this
|
* function.
|
*/
|
static void unready_flow_del(struct mlx5e_tc_flow *flow)
|
{
|
list_del(&flow->unready);
|
flow_flag_clear(flow, NOT_READY);
|
}
|
|
static void add_unready_flow(struct mlx5e_tc_flow *flow)
|
{
|
struct mlx5_rep_uplink_priv *uplink_priv;
|
struct mlx5e_rep_priv *rpriv;
|
struct mlx5_eswitch *esw;
|
|
esw = flow->priv->mdev->priv.eswitch;
|
rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
|
uplink_priv = &rpriv->uplink_priv;
|
|
mutex_lock(&uplink_priv->unready_flows_lock);
|
unready_flow_add(flow, &uplink_priv->unready_flows);
|
mutex_unlock(&uplink_priv->unready_flows_lock);
|
}
|
|
static void remove_unready_flow(struct mlx5e_tc_flow *flow)
|
{
|
struct mlx5_rep_uplink_priv *uplink_priv;
|
struct mlx5e_rep_priv *rpriv;
|
struct mlx5_eswitch *esw;
|
|
esw = flow->priv->mdev->priv.eswitch;
|
rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
|
uplink_priv = &rpriv->uplink_priv;
|
|
mutex_lock(&uplink_priv->unready_flows_lock);
|
if (flow_flag_test(flow, NOT_READY))
|
unready_flow_del(flow);
|
mutex_unlock(&uplink_priv->unready_flows_lock);
|
}
|
|
static int
|
mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv,
|
struct mlx5e_tc_flow *flow,
|
struct netlink_ext_ack *extack)
|
{
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
struct mlx5e_tc_flow_parse_attr *parse_attr;
|
struct mlx5_flow_attr *attr = flow->attr;
|
struct net_device *encap_dev = NULL;
|
struct mlx5_esw_flow_attr *esw_attr;
|
struct mlx5_fc *counter = NULL;
|
struct mlx5e_rep_priv *rpriv;
|
struct mlx5e_priv *out_priv;
|
bool encap_valid = true;
|
u32 max_prio, max_chain;
|
int err = 0;
|
int out_index;
|
|
if (!mlx5_chains_prios_supported(esw_chains(esw)) && attr->prio != 1) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"E-switch priorities unsupported, upgrade FW");
|
return -EOPNOTSUPP;
|
}
|
|
/* We check chain range only for tc flows.
|
* For ft flows, we checked attr->chain was originally 0 and set it to
|
* FDB_FT_CHAIN which is outside tc range.
|
* See mlx5e_rep_setup_ft_cb().
|
*/
|
max_chain = mlx5_chains_get_chain_range(esw_chains(esw));
|
if (!mlx5e_is_ft_flow(flow) && attr->chain > max_chain) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"Requested chain is out of supported range");
|
return -EOPNOTSUPP;
|
}
|
|
max_prio = mlx5_chains_get_prio_range(esw_chains(esw));
|
if (attr->prio > max_prio) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"Requested priority is out of supported range");
|
return -EOPNOTSUPP;
|
}
|
|
if (flow_flag_test(flow, L3_TO_L2_DECAP)) {
|
err = mlx5e_attach_decap(priv, flow, extack);
|
if (err)
|
return err;
|
}
|
|
parse_attr = attr->parse_attr;
|
esw_attr = attr->esw_attr;
|
|
for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++) {
|
struct net_device *out_dev;
|
int mirred_ifindex;
|
|
if (!(esw_attr->dests[out_index].flags & MLX5_ESW_DEST_ENCAP))
|
continue;
|
|
mirred_ifindex = parse_attr->mirred_ifindex[out_index];
|
out_dev = dev_get_by_index(dev_net(priv->netdev), mirred_ifindex);
|
if (!out_dev) {
|
NL_SET_ERR_MSG_MOD(extack, "Requested mirred device not found");
|
err = -ENODEV;
|
return err;
|
}
|
err = mlx5e_attach_encap(priv, flow, out_dev, out_index,
|
extack, &encap_dev, &encap_valid);
|
dev_put(out_dev);
|
if (err)
|
return err;
|
|
out_priv = netdev_priv(encap_dev);
|
rpriv = out_priv->ppriv;
|
esw_attr->dests[out_index].rep = rpriv->rep;
|
esw_attr->dests[out_index].mdev = out_priv->mdev;
|
}
|
|
err = mlx5_eswitch_add_vlan_action(esw, attr);
|
if (err)
|
return err;
|
|
if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR &&
|
!(attr->ct_attr.ct_action & TCA_CT_ACT_CLEAR)) {
|
err = mlx5e_attach_mod_hdr(priv, flow, parse_attr);
|
dealloc_mod_hdr_actions(&parse_attr->mod_hdr_acts);
|
if (err)
|
return err;
|
}
|
|
if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
|
counter = mlx5_fc_create(esw_attr->counter_dev, true);
|
if (IS_ERR(counter))
|
return PTR_ERR(counter);
|
|
attr->counter = counter;
|
}
|
|
/* we get here if one of the following takes place:
|
* (1) there's no error
|
* (2) there's an encap action and we don't have valid neigh
|
*/
|
if (!encap_valid)
|
flow->rule[0] = mlx5e_tc_offload_to_slow_path(esw, flow, &parse_attr->spec);
|
else
|
flow->rule[0] = mlx5e_tc_offload_fdb_rules(esw, flow, &parse_attr->spec, attr);
|
|
if (IS_ERR(flow->rule[0]))
|
return PTR_ERR(flow->rule[0]);
|
else
|
flow_flag_set(flow, OFFLOADED);
|
|
return 0;
|
}
|
|
static bool mlx5_flow_has_geneve_opt(struct mlx5e_tc_flow *flow)
|
{
|
struct mlx5_flow_spec *spec = &flow->attr->parse_attr->spec;
|
void *headers_v = MLX5_ADDR_OF(fte_match_param,
|
spec->match_value,
|
misc_parameters_3);
|
u32 geneve_tlv_opt_0_data = MLX5_GET(fte_match_set_misc3,
|
headers_v,
|
geneve_tlv_option_0_data);
|
|
return !!geneve_tlv_opt_0_data;
|
}
|
|
static void mlx5e_tc_del_fdb_flow(struct mlx5e_priv *priv,
|
struct mlx5e_tc_flow *flow)
|
{
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
struct mlx5_flow_attr *attr = flow->attr;
|
int out_index;
|
|
mlx5e_put_flow_tunnel_id(flow);
|
|
remove_unready_flow(flow);
|
|
if (mlx5e_is_offloaded_flow(flow)) {
|
if (flow_flag_test(flow, SLOW))
|
mlx5e_tc_unoffload_from_slow_path(esw, flow);
|
else
|
mlx5e_tc_unoffload_fdb_rules(esw, flow, attr);
|
}
|
|
if (mlx5_flow_has_geneve_opt(flow))
|
mlx5_geneve_tlv_option_del(priv->mdev->geneve);
|
|
mlx5_eswitch_del_vlan_action(esw, attr);
|
|
for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++)
|
if (attr->esw_attr->dests[out_index].flags & MLX5_ESW_DEST_ENCAP) {
|
mlx5e_detach_encap(priv, flow, out_index);
|
kfree(attr->parse_attr->tun_info[out_index]);
|
}
|
kvfree(attr->parse_attr);
|
|
mlx5_tc_ct_match_del(get_ct_priv(priv), &flow->attr->ct_attr);
|
|
if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
|
mlx5e_detach_mod_hdr(priv, flow);
|
|
if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT)
|
mlx5_fc_destroy(attr->esw_attr->counter_dev, attr->counter);
|
|
if (flow_flag_test(flow, L3_TO_L2_DECAP))
|
mlx5e_detach_decap(priv, flow);
|
|
kfree(flow->attr);
|
}
|
|
void mlx5e_tc_encap_flows_add(struct mlx5e_priv *priv,
|
struct mlx5e_encap_entry *e,
|
struct list_head *flow_list)
|
{
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
struct mlx5_esw_flow_attr *esw_attr;
|
struct mlx5_flow_handle *rule;
|
struct mlx5_flow_attr *attr;
|
struct mlx5_flow_spec *spec;
|
struct mlx5e_tc_flow *flow;
|
int err;
|
|
e->pkt_reformat = mlx5_packet_reformat_alloc(priv->mdev,
|
e->reformat_type,
|
e->encap_size, e->encap_header,
|
MLX5_FLOW_NAMESPACE_FDB);
|
if (IS_ERR(e->pkt_reformat)) {
|
mlx5_core_warn(priv->mdev, "Failed to offload cached encapsulation header, %lu\n",
|
PTR_ERR(e->pkt_reformat));
|
return;
|
}
|
e->flags |= MLX5_ENCAP_ENTRY_VALID;
|
mlx5e_rep_queue_neigh_stats_work(priv);
|
|
list_for_each_entry(flow, flow_list, tmp_list) {
|
bool all_flow_encaps_valid = true;
|
int i;
|
|
if (!mlx5e_is_offloaded_flow(flow))
|
continue;
|
attr = flow->attr;
|
esw_attr = attr->esw_attr;
|
spec = &attr->parse_attr->spec;
|
|
esw_attr->dests[flow->tmp_efi_index].pkt_reformat = e->pkt_reformat;
|
esw_attr->dests[flow->tmp_efi_index].flags |= MLX5_ESW_DEST_ENCAP_VALID;
|
/* Flow can be associated with multiple encap entries.
|
* Before offloading the flow verify that all of them have
|
* a valid neighbour.
|
*/
|
for (i = 0; i < MLX5_MAX_FLOW_FWD_VPORTS; i++) {
|
if (!(esw_attr->dests[i].flags & MLX5_ESW_DEST_ENCAP))
|
continue;
|
if (!(esw_attr->dests[i].flags & MLX5_ESW_DEST_ENCAP_VALID)) {
|
all_flow_encaps_valid = false;
|
break;
|
}
|
}
|
/* Do not offload flows with unresolved neighbors */
|
if (!all_flow_encaps_valid)
|
continue;
|
/* update from slow path rule to encap rule */
|
rule = mlx5e_tc_offload_fdb_rules(esw, flow, spec, attr);
|
if (IS_ERR(rule)) {
|
err = PTR_ERR(rule);
|
mlx5_core_warn(priv->mdev, "Failed to update cached encapsulation flow, %d\n",
|
err);
|
continue;
|
}
|
|
mlx5e_tc_unoffload_from_slow_path(esw, flow);
|
flow->rule[0] = rule;
|
/* was unset when slow path rule removed */
|
flow_flag_set(flow, OFFLOADED);
|
}
|
}
|
|
void mlx5e_tc_encap_flows_del(struct mlx5e_priv *priv,
|
struct mlx5e_encap_entry *e,
|
struct list_head *flow_list)
|
{
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
struct mlx5_esw_flow_attr *esw_attr;
|
struct mlx5_flow_handle *rule;
|
struct mlx5_flow_attr *attr;
|
struct mlx5_flow_spec *spec;
|
struct mlx5e_tc_flow *flow;
|
int err;
|
|
list_for_each_entry(flow, flow_list, tmp_list) {
|
if (!mlx5e_is_offloaded_flow(flow))
|
continue;
|
attr = flow->attr;
|
esw_attr = attr->esw_attr;
|
spec = &attr->parse_attr->spec;
|
|
/* update from encap rule to slow path rule */
|
rule = mlx5e_tc_offload_to_slow_path(esw, flow, spec);
|
/* mark the flow's encap dest as non-valid */
|
esw_attr->dests[flow->tmp_efi_index].flags &= ~MLX5_ESW_DEST_ENCAP_VALID;
|
|
if (IS_ERR(rule)) {
|
err = PTR_ERR(rule);
|
mlx5_core_warn(priv->mdev, "Failed to update slow path (encap) flow, %d\n",
|
err);
|
continue;
|
}
|
|
mlx5e_tc_unoffload_fdb_rules(esw, flow, attr);
|
flow->rule[0] = rule;
|
/* was unset when fast path rule removed */
|
flow_flag_set(flow, OFFLOADED);
|
}
|
|
/* we know that the encap is valid */
|
e->flags &= ~MLX5_ENCAP_ENTRY_VALID;
|
mlx5_packet_reformat_dealloc(priv->mdev, e->pkt_reformat);
|
}
|
|
static struct mlx5_fc *mlx5e_tc_get_counter(struct mlx5e_tc_flow *flow)
|
{
|
return flow->attr->counter;
|
}
|
|
/* Takes reference to all flows attached to encap and adds the flows to
|
* flow_list using 'tmp_list' list_head in mlx5e_tc_flow.
|
*/
|
void mlx5e_take_all_encap_flows(struct mlx5e_encap_entry *e, struct list_head *flow_list)
|
{
|
struct encap_flow_item *efi;
|
struct mlx5e_tc_flow *flow;
|
|
list_for_each_entry(efi, &e->flows, list) {
|
flow = container_of(efi, struct mlx5e_tc_flow, encaps[efi->index]);
|
if (IS_ERR(mlx5e_flow_get(flow)))
|
continue;
|
wait_for_completion(&flow->init_done);
|
|
flow->tmp_efi_index = efi->index;
|
list_add(&flow->tmp_list, flow_list);
|
}
|
}
|
|
/* Iterate over tmp_list of flows attached to flow_list head. */
|
void mlx5e_put_encap_flow_list(struct mlx5e_priv *priv, struct list_head *flow_list)
|
{
|
struct mlx5e_tc_flow *flow, *tmp;
|
|
list_for_each_entry_safe(flow, tmp, flow_list, tmp_list)
|
mlx5e_flow_put(priv, flow);
|
}
|
|
static struct mlx5e_encap_entry *
|
mlx5e_get_next_valid_encap(struct mlx5e_neigh_hash_entry *nhe,
|
struct mlx5e_encap_entry *e)
|
{
|
struct mlx5e_encap_entry *next = NULL;
|
|
retry:
|
rcu_read_lock();
|
|
/* find encap with non-zero reference counter value */
|
for (next = e ?
|
list_next_or_null_rcu(&nhe->encap_list,
|
&e->encap_list,
|
struct mlx5e_encap_entry,
|
encap_list) :
|
list_first_or_null_rcu(&nhe->encap_list,
|
struct mlx5e_encap_entry,
|
encap_list);
|
next;
|
next = list_next_or_null_rcu(&nhe->encap_list,
|
&next->encap_list,
|
struct mlx5e_encap_entry,
|
encap_list))
|
if (mlx5e_encap_take(next))
|
break;
|
|
rcu_read_unlock();
|
|
/* release starting encap */
|
if (e)
|
mlx5e_encap_put(netdev_priv(e->out_dev), e);
|
if (!next)
|
return next;
|
|
/* wait for encap to be fully initialized */
|
wait_for_completion(&next->res_ready);
|
/* continue searching if encap entry is not in valid state after completion */
|
if (!(next->flags & MLX5_ENCAP_ENTRY_VALID)) {
|
e = next;
|
goto retry;
|
}
|
|
return next;
|
}
|
|
void mlx5e_tc_update_neigh_used_value(struct mlx5e_neigh_hash_entry *nhe)
|
{
|
struct mlx5e_neigh *m_neigh = &nhe->m_neigh;
|
struct mlx5e_encap_entry *e = NULL;
|
struct mlx5e_tc_flow *flow;
|
struct mlx5_fc *counter;
|
struct neigh_table *tbl;
|
bool neigh_used = false;
|
struct neighbour *n;
|
u64 lastuse;
|
|
if (m_neigh->family == AF_INET)
|
tbl = &arp_tbl;
|
#if IS_ENABLED(CONFIG_IPV6)
|
else if (m_neigh->family == AF_INET6)
|
tbl = ipv6_stub->nd_tbl;
|
#endif
|
else
|
return;
|
|
/* mlx5e_get_next_valid_encap() releases previous encap before returning
|
* next one.
|
*/
|
while ((e = mlx5e_get_next_valid_encap(nhe, e)) != NULL) {
|
struct mlx5e_priv *priv = netdev_priv(e->out_dev);
|
struct encap_flow_item *efi, *tmp;
|
struct mlx5_eswitch *esw;
|
LIST_HEAD(flow_list);
|
|
esw = priv->mdev->priv.eswitch;
|
mutex_lock(&esw->offloads.encap_tbl_lock);
|
list_for_each_entry_safe(efi, tmp, &e->flows, list) {
|
flow = container_of(efi, struct mlx5e_tc_flow,
|
encaps[efi->index]);
|
if (IS_ERR(mlx5e_flow_get(flow)))
|
continue;
|
list_add(&flow->tmp_list, &flow_list);
|
|
if (mlx5e_is_offloaded_flow(flow)) {
|
counter = mlx5e_tc_get_counter(flow);
|
lastuse = mlx5_fc_query_lastuse(counter);
|
if (time_after((unsigned long)lastuse, nhe->reported_lastuse)) {
|
neigh_used = true;
|
break;
|
}
|
}
|
}
|
mutex_unlock(&esw->offloads.encap_tbl_lock);
|
|
mlx5e_put_encap_flow_list(priv, &flow_list);
|
if (neigh_used) {
|
/* release current encap before breaking the loop */
|
mlx5e_encap_put(priv, e);
|
break;
|
}
|
}
|
|
trace_mlx5e_tc_update_neigh_used_value(nhe, neigh_used);
|
|
if (neigh_used) {
|
nhe->reported_lastuse = jiffies;
|
|
/* find the relevant neigh according to the cached device and
|
* dst ip pair
|
*/
|
n = neigh_lookup(tbl, &m_neigh->dst_ip, m_neigh->dev);
|
if (!n)
|
return;
|
|
neigh_event_send(n, NULL);
|
neigh_release(n);
|
}
|
}
|
|
static void mlx5e_encap_dealloc(struct mlx5e_priv *priv, struct mlx5e_encap_entry *e)
|
{
|
WARN_ON(!list_empty(&e->flows));
|
|
if (e->compl_result > 0) {
|
mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e);
|
|
if (e->flags & MLX5_ENCAP_ENTRY_VALID)
|
mlx5_packet_reformat_dealloc(priv->mdev, e->pkt_reformat);
|
}
|
|
kfree(e->tun_info);
|
kfree(e->encap_header);
|
kfree_rcu(e, rcu);
|
}
|
|
static void mlx5e_decap_dealloc(struct mlx5e_priv *priv,
|
struct mlx5e_decap_entry *d)
|
{
|
WARN_ON(!list_empty(&d->flows));
|
|
if (!d->compl_result)
|
mlx5_packet_reformat_dealloc(priv->mdev, d->pkt_reformat);
|
|
kfree_rcu(d, rcu);
|
}
|
|
void mlx5e_encap_put(struct mlx5e_priv *priv, struct mlx5e_encap_entry *e)
|
{
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
|
if (!refcount_dec_and_mutex_lock(&e->refcnt, &esw->offloads.encap_tbl_lock))
|
return;
|
hash_del_rcu(&e->encap_hlist);
|
mutex_unlock(&esw->offloads.encap_tbl_lock);
|
|
mlx5e_encap_dealloc(priv, e);
|
}
|
|
static void mlx5e_decap_put(struct mlx5e_priv *priv, struct mlx5e_decap_entry *d)
|
{
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
|
if (!refcount_dec_and_mutex_lock(&d->refcnt, &esw->offloads.decap_tbl_lock))
|
return;
|
hash_del_rcu(&d->hlist);
|
mutex_unlock(&esw->offloads.decap_tbl_lock);
|
|
mlx5e_decap_dealloc(priv, d);
|
}
|
|
static void mlx5e_detach_encap(struct mlx5e_priv *priv,
|
struct mlx5e_tc_flow *flow, int out_index)
|
{
|
struct mlx5e_encap_entry *e = flow->encaps[out_index].e;
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
|
/* flow wasn't fully initialized */
|
if (!e)
|
return;
|
|
mutex_lock(&esw->offloads.encap_tbl_lock);
|
list_del(&flow->encaps[out_index].list);
|
flow->encaps[out_index].e = NULL;
|
if (!refcount_dec_and_test(&e->refcnt)) {
|
mutex_unlock(&esw->offloads.encap_tbl_lock);
|
return;
|
}
|
hash_del_rcu(&e->encap_hlist);
|
mutex_unlock(&esw->offloads.encap_tbl_lock);
|
|
mlx5e_encap_dealloc(priv, e);
|
}
|
|
static void mlx5e_detach_decap(struct mlx5e_priv *priv,
|
struct mlx5e_tc_flow *flow)
|
{
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
struct mlx5e_decap_entry *d = flow->decap_reformat;
|
|
if (!d)
|
return;
|
|
mutex_lock(&esw->offloads.decap_tbl_lock);
|
list_del(&flow->l3_to_l2_reformat);
|
flow->decap_reformat = NULL;
|
|
if (!refcount_dec_and_test(&d->refcnt)) {
|
mutex_unlock(&esw->offloads.decap_tbl_lock);
|
return;
|
}
|
hash_del_rcu(&d->hlist);
|
mutex_unlock(&esw->offloads.decap_tbl_lock);
|
|
mlx5e_decap_dealloc(priv, d);
|
}
|
|
static void __mlx5e_tc_del_fdb_peer_flow(struct mlx5e_tc_flow *flow)
|
{
|
struct mlx5_eswitch *esw = flow->priv->mdev->priv.eswitch;
|
|
if (!flow_flag_test(flow, ESWITCH) ||
|
!flow_flag_test(flow, DUP))
|
return;
|
|
mutex_lock(&esw->offloads.peer_mutex);
|
list_del(&flow->peer);
|
mutex_unlock(&esw->offloads.peer_mutex);
|
|
flow_flag_clear(flow, DUP);
|
|
if (refcount_dec_and_test(&flow->peer_flow->refcnt)) {
|
mlx5e_tc_del_fdb_flow(flow->peer_flow->priv, flow->peer_flow);
|
kfree(flow->peer_flow);
|
}
|
|
flow->peer_flow = NULL;
|
}
|
|
static void mlx5e_tc_del_fdb_peer_flow(struct mlx5e_tc_flow *flow)
|
{
|
struct mlx5_core_dev *dev = flow->priv->mdev;
|
struct mlx5_devcom *devcom = dev->priv.devcom;
|
struct mlx5_eswitch *peer_esw;
|
|
peer_esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
|
if (!peer_esw)
|
return;
|
|
__mlx5e_tc_del_fdb_peer_flow(flow);
|
mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
|
}
|
|
static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
|
struct mlx5e_tc_flow *flow)
|
{
|
if (mlx5e_is_eswitch_flow(flow)) {
|
mlx5e_tc_del_fdb_peer_flow(flow);
|
mlx5e_tc_del_fdb_flow(priv, flow);
|
} else {
|
mlx5e_tc_del_nic_flow(priv, flow);
|
}
|
}
|
|
static int flow_has_tc_fwd_action(struct flow_cls_offload *f)
|
{
|
struct flow_rule *rule = flow_cls_offload_flow_rule(f);
|
struct flow_action *flow_action = &rule->action;
|
const struct flow_action_entry *act;
|
int i;
|
|
flow_action_for_each(i, act, flow_action) {
|
switch (act->id) {
|
case FLOW_ACTION_GOTO:
|
return true;
|
default:
|
continue;
|
}
|
}
|
|
return false;
|
}
|
|
static int
|
enc_opts_is_dont_care_or_full_match(struct mlx5e_priv *priv,
|
struct flow_dissector_key_enc_opts *opts,
|
struct netlink_ext_ack *extack,
|
bool *dont_care)
|
{
|
struct geneve_opt *opt;
|
int off = 0;
|
|
*dont_care = true;
|
|
while (opts->len > off) {
|
opt = (struct geneve_opt *)&opts->data[off];
|
|
if (!(*dont_care) || opt->opt_class || opt->type ||
|
memchr_inv(opt->opt_data, 0, opt->length * 4)) {
|
*dont_care = false;
|
|
if (opt->opt_class != htons(U16_MAX) ||
|
opt->type != U8_MAX) {
|
NL_SET_ERR_MSG(extack,
|
"Partial match of tunnel options in chain > 0 isn't supported");
|
netdev_warn(priv->netdev,
|
"Partial match of tunnel options in chain > 0 isn't supported");
|
return -EOPNOTSUPP;
|
}
|
}
|
|
off += sizeof(struct geneve_opt) + opt->length * 4;
|
}
|
|
return 0;
|
}
|
|
#define COPY_DISSECTOR(rule, diss_key, dst)\
|
({ \
|
struct flow_rule *__rule = (rule);\
|
typeof(dst) __dst = dst;\
|
\
|
memcpy(__dst,\
|
skb_flow_dissector_target(__rule->match.dissector,\
|
diss_key,\
|
__rule->match.key),\
|
sizeof(*__dst));\
|
})
|
|
static int mlx5e_get_flow_tunnel_id(struct mlx5e_priv *priv,
|
struct mlx5e_tc_flow *flow,
|
struct flow_cls_offload *f,
|
struct net_device *filter_dev)
|
{
|
struct flow_rule *rule = flow_cls_offload_flow_rule(f);
|
struct netlink_ext_ack *extack = f->common.extack;
|
struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts;
|
struct flow_match_enc_opts enc_opts_match;
|
struct tunnel_match_enc_opts tun_enc_opts;
|
struct mlx5_rep_uplink_priv *uplink_priv;
|
struct mlx5_flow_attr *attr = flow->attr;
|
struct mlx5e_rep_priv *uplink_rpriv;
|
struct tunnel_match_key tunnel_key;
|
bool enc_opts_is_dont_care = true;
|
u32 tun_id, enc_opts_id = 0;
|
struct mlx5_eswitch *esw;
|
u32 value, mask;
|
int err;
|
|
esw = priv->mdev->priv.eswitch;
|
uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
|
uplink_priv = &uplink_rpriv->uplink_priv;
|
|
memset(&tunnel_key, 0, sizeof(tunnel_key));
|
COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_CONTROL,
|
&tunnel_key.enc_control);
|
if (tunnel_key.enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS)
|
COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
|
&tunnel_key.enc_ipv4);
|
else
|
COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
|
&tunnel_key.enc_ipv6);
|
COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_IP, &tunnel_key.enc_ip);
|
COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_PORTS,
|
&tunnel_key.enc_tp);
|
COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_KEYID,
|
&tunnel_key.enc_key_id);
|
tunnel_key.filter_ifindex = filter_dev->ifindex;
|
|
err = mapping_add(uplink_priv->tunnel_mapping, &tunnel_key, &tun_id);
|
if (err)
|
return err;
|
|
flow_rule_match_enc_opts(rule, &enc_opts_match);
|
err = enc_opts_is_dont_care_or_full_match(priv,
|
enc_opts_match.mask,
|
extack,
|
&enc_opts_is_dont_care);
|
if (err)
|
goto err_enc_opts;
|
|
if (!enc_opts_is_dont_care) {
|
memset(&tun_enc_opts, 0, sizeof(tun_enc_opts));
|
memcpy(&tun_enc_opts.key, enc_opts_match.key,
|
sizeof(*enc_opts_match.key));
|
memcpy(&tun_enc_opts.mask, enc_opts_match.mask,
|
sizeof(*enc_opts_match.mask));
|
|
err = mapping_add(uplink_priv->tunnel_enc_opts_mapping,
|
&tun_enc_opts, &enc_opts_id);
|
if (err)
|
goto err_enc_opts;
|
}
|
|
value = tun_id << ENC_OPTS_BITS | enc_opts_id;
|
mask = enc_opts_id ? TUNNEL_ID_MASK :
|
(TUNNEL_ID_MASK & ~ENC_OPTS_BITS_MASK);
|
|
if (attr->chain) {
|
mlx5e_tc_match_to_reg_match(&attr->parse_attr->spec,
|
TUNNEL_TO_REG, value, mask);
|
} else {
|
mod_hdr_acts = &attr->parse_attr->mod_hdr_acts;
|
err = mlx5e_tc_match_to_reg_set(priv->mdev,
|
mod_hdr_acts, MLX5_FLOW_NAMESPACE_FDB,
|
TUNNEL_TO_REG, value);
|
if (err)
|
goto err_set;
|
|
attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
|
}
|
|
flow->tunnel_id = value;
|
return 0;
|
|
err_set:
|
if (enc_opts_id)
|
mapping_remove(uplink_priv->tunnel_enc_opts_mapping,
|
enc_opts_id);
|
err_enc_opts:
|
mapping_remove(uplink_priv->tunnel_mapping, tun_id);
|
return err;
|
}
|
|
static void mlx5e_put_flow_tunnel_id(struct mlx5e_tc_flow *flow)
|
{
|
u32 enc_opts_id = flow->tunnel_id & ENC_OPTS_BITS_MASK;
|
u32 tun_id = flow->tunnel_id >> ENC_OPTS_BITS;
|
struct mlx5_rep_uplink_priv *uplink_priv;
|
struct mlx5e_rep_priv *uplink_rpriv;
|
struct mlx5_eswitch *esw;
|
|
esw = flow->priv->mdev->priv.eswitch;
|
uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
|
uplink_priv = &uplink_rpriv->uplink_priv;
|
|
if (tun_id)
|
mapping_remove(uplink_priv->tunnel_mapping, tun_id);
|
if (enc_opts_id)
|
mapping_remove(uplink_priv->tunnel_enc_opts_mapping,
|
enc_opts_id);
|
}
|
|
u32 mlx5e_tc_get_flow_tun_id(struct mlx5e_tc_flow *flow)
|
{
|
return flow->tunnel_id;
|
}
|
|
void mlx5e_tc_set_ethertype(struct mlx5_core_dev *mdev,
|
struct flow_match_basic *match, bool outer,
|
void *headers_c, void *headers_v)
|
{
|
bool ip_version_cap;
|
|
ip_version_cap = outer ?
|
MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
|
ft_field_support.outer_ip_version) :
|
MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
|
ft_field_support.inner_ip_version);
|
|
if (ip_version_cap && match->mask->n_proto == htons(0xFFFF) &&
|
(match->key->n_proto == htons(ETH_P_IP) ||
|
match->key->n_proto == htons(ETH_P_IPV6))) {
|
MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ip_version);
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_version,
|
match->key->n_proto == htons(ETH_P_IP) ? 4 : 6);
|
} else {
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
|
ntohs(match->mask->n_proto));
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
|
ntohs(match->key->n_proto));
|
}
|
}
|
|
static int parse_tunnel_attr(struct mlx5e_priv *priv,
|
struct mlx5e_tc_flow *flow,
|
struct mlx5_flow_spec *spec,
|
struct flow_cls_offload *f,
|
struct net_device *filter_dev,
|
u8 *match_level,
|
bool *match_inner)
|
{
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
struct netlink_ext_ack *extack = f->common.extack;
|
bool needs_mapping, sets_mapping;
|
int err;
|
|
if (!mlx5e_is_eswitch_flow(flow))
|
return -EOPNOTSUPP;
|
|
needs_mapping = !!flow->attr->chain;
|
sets_mapping = !flow->attr->chain && flow_has_tc_fwd_action(f);
|
*match_inner = !needs_mapping;
|
|
if ((needs_mapping || sets_mapping) &&
|
!mlx5_eswitch_reg_c1_loopback_enabled(esw)) {
|
NL_SET_ERR_MSG(extack,
|
"Chains on tunnel devices isn't supported without register loopback support");
|
netdev_warn(priv->netdev,
|
"Chains on tunnel devices isn't supported without register loopback support");
|
return -EOPNOTSUPP;
|
}
|
|
if (!flow->attr->chain) {
|
err = mlx5e_tc_tun_parse(filter_dev, priv, spec, f,
|
match_level);
|
if (err) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"Failed to parse tunnel attributes");
|
netdev_warn(priv->netdev,
|
"Failed to parse tunnel attributes");
|
return err;
|
}
|
|
/* With mpls over udp we decapsulate using packet reformat
|
* object
|
*/
|
if (!netif_is_bareudp(filter_dev))
|
flow->attr->action |= MLX5_FLOW_CONTEXT_ACTION_DECAP;
|
}
|
|
if (!needs_mapping && !sets_mapping)
|
return 0;
|
|
return mlx5e_get_flow_tunnel_id(priv, flow, f, filter_dev);
|
}
|
|
static void *get_match_inner_headers_criteria(struct mlx5_flow_spec *spec)
|
{
|
return MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
|
inner_headers);
|
}
|
|
static void *get_match_inner_headers_value(struct mlx5_flow_spec *spec)
|
{
|
return MLX5_ADDR_OF(fte_match_param, spec->match_value,
|
inner_headers);
|
}
|
|
static void *get_match_outer_headers_criteria(struct mlx5_flow_spec *spec)
|
{
|
return MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
|
outer_headers);
|
}
|
|
static void *get_match_outer_headers_value(struct mlx5_flow_spec *spec)
|
{
|
return MLX5_ADDR_OF(fte_match_param, spec->match_value,
|
outer_headers);
|
}
|
|
static void *get_match_headers_value(u32 flags,
|
struct mlx5_flow_spec *spec)
|
{
|
return (flags & MLX5_FLOW_CONTEXT_ACTION_DECAP) ?
|
get_match_inner_headers_value(spec) :
|
get_match_outer_headers_value(spec);
|
}
|
|
static void *get_match_headers_criteria(u32 flags,
|
struct mlx5_flow_spec *spec)
|
{
|
return (flags & MLX5_FLOW_CONTEXT_ACTION_DECAP) ?
|
get_match_inner_headers_criteria(spec) :
|
get_match_outer_headers_criteria(spec);
|
}
|
|
static int mlx5e_flower_parse_meta(struct net_device *filter_dev,
|
struct flow_cls_offload *f)
|
{
|
struct flow_rule *rule = flow_cls_offload_flow_rule(f);
|
struct netlink_ext_ack *extack = f->common.extack;
|
struct net_device *ingress_dev;
|
struct flow_match_meta match;
|
|
if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_META))
|
return 0;
|
|
flow_rule_match_meta(rule, &match);
|
if (!match.mask->ingress_ifindex)
|
return 0;
|
|
if (match.mask->ingress_ifindex != 0xFFFFFFFF) {
|
NL_SET_ERR_MSG_MOD(extack, "Unsupported ingress ifindex mask");
|
return -EOPNOTSUPP;
|
}
|
|
ingress_dev = __dev_get_by_index(dev_net(filter_dev),
|
match.key->ingress_ifindex);
|
if (!ingress_dev) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"Can't find the ingress port to match on");
|
return -ENOENT;
|
}
|
|
if (ingress_dev != filter_dev) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"Can't match on the ingress filter port");
|
return -EOPNOTSUPP;
|
}
|
|
return 0;
|
}
|
|
static bool skip_key_basic(struct net_device *filter_dev,
|
struct flow_cls_offload *f)
|
{
|
/* When doing mpls over udp decap, the user needs to provide
|
* MPLS_UC as the protocol in order to be able to match on mpls
|
* label fields. However, the actual ethertype is IP so we want to
|
* avoid matching on this, otherwise we'll fail the match.
|
*/
|
if (netif_is_bareudp(filter_dev) && f->common.chain_index == 0)
|
return true;
|
|
return false;
|
}
|
|
static int __parse_cls_flower(struct mlx5e_priv *priv,
|
struct mlx5e_tc_flow *flow,
|
struct mlx5_flow_spec *spec,
|
struct flow_cls_offload *f,
|
struct net_device *filter_dev,
|
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,
|
outer_headers);
|
void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
|
outer_headers);
|
void *misc_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
|
misc_parameters);
|
void *misc_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
|
misc_parameters);
|
struct flow_rule *rule = flow_cls_offload_flow_rule(f);
|
struct flow_dissector *dissector = rule->match.dissector;
|
enum fs_flow_table_type fs_type;
|
u16 addr_type = 0;
|
u8 ip_proto = 0;
|
u8 *match_level;
|
int err;
|
|
fs_type = mlx5e_is_eswitch_flow(flow) ? FS_FT_FDB : FS_FT_NIC_RX;
|
match_level = outer_match_level;
|
|
if (dissector->used_keys &
|
~(BIT(FLOW_DISSECTOR_KEY_META) |
|
BIT(FLOW_DISSECTOR_KEY_CONTROL) |
|
BIT(FLOW_DISSECTOR_KEY_BASIC) |
|
BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
|
BIT(FLOW_DISSECTOR_KEY_VLAN) |
|
BIT(FLOW_DISSECTOR_KEY_CVLAN) |
|
BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
|
BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
|
BIT(FLOW_DISSECTOR_KEY_PORTS) |
|
BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) |
|
BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
|
BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
|
BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) |
|
BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) |
|
BIT(FLOW_DISSECTOR_KEY_TCP) |
|
BIT(FLOW_DISSECTOR_KEY_IP) |
|
BIT(FLOW_DISSECTOR_KEY_CT) |
|
BIT(FLOW_DISSECTOR_KEY_ENC_IP) |
|
BIT(FLOW_DISSECTOR_KEY_ENC_OPTS) |
|
BIT(FLOW_DISSECTOR_KEY_MPLS))) {
|
NL_SET_ERR_MSG_MOD(extack, "Unsupported key");
|
netdev_dbg(priv->netdev, "Unsupported key used: 0x%x\n",
|
dissector->used_keys);
|
return -EOPNOTSUPP;
|
}
|
|
if (mlx5e_get_tc_tun(filter_dev)) {
|
bool match_inner = false;
|
|
err = parse_tunnel_attr(priv, flow, spec, f, filter_dev,
|
outer_match_level, &match_inner);
|
if (err)
|
return err;
|
|
if (match_inner) {
|
/* header pointers should point to the inner headers
|
* if the packet was decapsulated already.
|
* outer headers are set by parse_tunnel_attr.
|
*/
|
match_level = inner_match_level;
|
headers_c = get_match_inner_headers_criteria(spec);
|
headers_v = get_match_inner_headers_value(spec);
|
}
|
}
|
|
err = mlx5e_flower_parse_meta(filter_dev, f);
|
if (err)
|
return err;
|
|
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC) &&
|
!skip_key_basic(filter_dev, f)) {
|
struct flow_match_basic match;
|
|
flow_rule_match_basic(rule, &match);
|
mlx5e_tc_set_ethertype(priv->mdev, &match,
|
match_level == outer_match_level,
|
headers_c, headers_v);
|
|
if (match.mask->n_proto)
|
*match_level = MLX5_MATCH_L2;
|
}
|
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN) ||
|
is_vlan_dev(filter_dev)) {
|
struct flow_dissector_key_vlan filter_dev_mask;
|
struct flow_dissector_key_vlan filter_dev_key;
|
struct flow_match_vlan match;
|
|
if (is_vlan_dev(filter_dev)) {
|
match.key = &filter_dev_key;
|
match.key->vlan_id = vlan_dev_vlan_id(filter_dev);
|
match.key->vlan_tpid = vlan_dev_vlan_proto(filter_dev);
|
match.key->vlan_priority = 0;
|
match.mask = &filter_dev_mask;
|
memset(match.mask, 0xff, sizeof(*match.mask));
|
match.mask->vlan_priority = 0;
|
} else {
|
flow_rule_match_vlan(rule, &match);
|
}
|
if (match.mask->vlan_id ||
|
match.mask->vlan_priority ||
|
match.mask->vlan_tpid) {
|
if (match.key->vlan_tpid == htons(ETH_P_8021AD)) {
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
|
svlan_tag, 1);
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
|
svlan_tag, 1);
|
} else {
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
|
cvlan_tag, 1);
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
|
cvlan_tag, 1);
|
}
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_vid,
|
match.mask->vlan_id);
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid,
|
match.key->vlan_id);
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio,
|
match.mask->vlan_priority);
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio,
|
match.key->vlan_priority);
|
|
*match_level = MLX5_MATCH_L2;
|
|
if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CVLAN) &&
|
match.mask->vlan_eth_type &&
|
MLX5_CAP_FLOWTABLE_TYPE(priv->mdev,
|
ft_field_support.outer_second_vid,
|
fs_type)) {
|
MLX5_SET(fte_match_set_misc, misc_c,
|
outer_second_cvlan_tag, 1);
|
spec->match_criteria_enable |=
|
MLX5_MATCH_MISC_PARAMETERS;
|
}
|
}
|
} else if (*match_level != MLX5_MATCH_NONE) {
|
/* cvlan_tag enabled in match criteria and
|
* disabled in match value means both S & C tags
|
* don't exist (untagged of both)
|
*/
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1);
|
*match_level = MLX5_MATCH_L2;
|
}
|
|
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CVLAN)) {
|
struct flow_match_vlan match;
|
|
flow_rule_match_cvlan(rule, &match);
|
if (match.mask->vlan_id ||
|
match.mask->vlan_priority ||
|
match.mask->vlan_tpid) {
|
if (!MLX5_CAP_FLOWTABLE_TYPE(priv->mdev, ft_field_support.outer_second_vid,
|
fs_type)) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"Matching on CVLAN is not supported");
|
return -EOPNOTSUPP;
|
}
|
|
if (match.key->vlan_tpid == htons(ETH_P_8021AD)) {
|
MLX5_SET(fte_match_set_misc, misc_c,
|
outer_second_svlan_tag, 1);
|
MLX5_SET(fte_match_set_misc, misc_v,
|
outer_second_svlan_tag, 1);
|
} else {
|
MLX5_SET(fte_match_set_misc, misc_c,
|
outer_second_cvlan_tag, 1);
|
MLX5_SET(fte_match_set_misc, misc_v,
|
outer_second_cvlan_tag, 1);
|
}
|
|
MLX5_SET(fte_match_set_misc, misc_c, outer_second_vid,
|
match.mask->vlan_id);
|
MLX5_SET(fte_match_set_misc, misc_v, outer_second_vid,
|
match.key->vlan_id);
|
MLX5_SET(fte_match_set_misc, misc_c, outer_second_prio,
|
match.mask->vlan_priority);
|
MLX5_SET(fte_match_set_misc, misc_v, outer_second_prio,
|
match.key->vlan_priority);
|
|
*match_level = MLX5_MATCH_L2;
|
spec->match_criteria_enable |= MLX5_MATCH_MISC_PARAMETERS;
|
}
|
}
|
|
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
|
struct flow_match_eth_addrs match;
|
|
flow_rule_match_eth_addrs(rule, &match);
|
ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
|
dmac_47_16),
|
match.mask->dst);
|
ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
|
dmac_47_16),
|
match.key->dst);
|
|
ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
|
smac_47_16),
|
match.mask->src);
|
ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
|
smac_47_16),
|
match.key->src);
|
|
if (!is_zero_ether_addr(match.mask->src) ||
|
!is_zero_ether_addr(match.mask->dst))
|
*match_level = MLX5_MATCH_L2;
|
}
|
|
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) {
|
struct flow_match_control match;
|
|
flow_rule_match_control(rule, &match);
|
addr_type = match.key->addr_type;
|
|
/* the HW doesn't support frag first/later */
|
if (match.mask->flags & FLOW_DIS_FIRST_FRAG)
|
return -EOPNOTSUPP;
|
|
if (match.mask->flags & FLOW_DIS_IS_FRAGMENT) {
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag,
|
match.key->flags & FLOW_DIS_IS_FRAGMENT);
|
|
/* the HW doesn't need L3 inline to match on frag=no */
|
if (!(match.key->flags & FLOW_DIS_IS_FRAGMENT))
|
*match_level = MLX5_MATCH_L2;
|
/* *** L2 attributes parsing up to here *** */
|
else
|
*match_level = MLX5_MATCH_L3;
|
}
|
}
|
|
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
|
struct flow_match_basic match;
|
|
flow_rule_match_basic(rule, &match);
|
ip_proto = match.key->ip_proto;
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
|
match.mask->ip_proto);
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
|
match.key->ip_proto);
|
|
if (match.mask->ip_proto)
|
*match_level = MLX5_MATCH_L3;
|
}
|
|
if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
|
struct flow_match_ipv4_addrs match;
|
|
flow_rule_match_ipv4_addrs(rule, &match);
|
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
|
src_ipv4_src_ipv6.ipv4_layout.ipv4),
|
&match.mask->src, sizeof(match.mask->src));
|
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
|
src_ipv4_src_ipv6.ipv4_layout.ipv4),
|
&match.key->src, sizeof(match.key->src));
|
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
|
dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
|
&match.mask->dst, sizeof(match.mask->dst));
|
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
|
dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
|
&match.key->dst, sizeof(match.key->dst));
|
|
if (match.mask->src || match.mask->dst)
|
*match_level = MLX5_MATCH_L3;
|
}
|
|
if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
|
struct flow_match_ipv6_addrs match;
|
|
flow_rule_match_ipv6_addrs(rule, &match);
|
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
|
src_ipv4_src_ipv6.ipv6_layout.ipv6),
|
&match.mask->src, sizeof(match.mask->src));
|
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
|
src_ipv4_src_ipv6.ipv6_layout.ipv6),
|
&match.key->src, sizeof(match.key->src));
|
|
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
|
dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
|
&match.mask->dst, sizeof(match.mask->dst));
|
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
|
dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
|
&match.key->dst, sizeof(match.key->dst));
|
|
if (ipv6_addr_type(&match.mask->src) != IPV6_ADDR_ANY ||
|
ipv6_addr_type(&match.mask->dst) != IPV6_ADDR_ANY)
|
*match_level = MLX5_MATCH_L3;
|
}
|
|
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) {
|
struct flow_match_ip match;
|
|
flow_rule_match_ip(rule, &match);
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_ecn,
|
match.mask->tos & 0x3);
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn,
|
match.key->tos & 0x3);
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_dscp,
|
match.mask->tos >> 2);
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp,
|
match.key->tos >> 2);
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c, ttl_hoplimit,
|
match.mask->ttl);
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v, ttl_hoplimit,
|
match.key->ttl);
|
|
if (match.mask->ttl &&
|
!MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev,
|
ft_field_support.outer_ipv4_ttl)) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"Matching on TTL is not supported");
|
return -EOPNOTSUPP;
|
}
|
|
if (match.mask->tos || match.mask->ttl)
|
*match_level = MLX5_MATCH_L3;
|
}
|
|
/* *** L3 attributes parsing up to here *** */
|
|
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) {
|
struct flow_match_ports match;
|
|
flow_rule_match_ports(rule, &match);
|
switch (ip_proto) {
|
case IPPROTO_TCP:
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
|
tcp_sport, ntohs(match.mask->src));
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
|
tcp_sport, ntohs(match.key->src));
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
|
tcp_dport, ntohs(match.mask->dst));
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
|
tcp_dport, ntohs(match.key->dst));
|
break;
|
|
case IPPROTO_UDP:
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
|
udp_sport, ntohs(match.mask->src));
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
|
udp_sport, ntohs(match.key->src));
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
|
udp_dport, ntohs(match.mask->dst));
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
|
udp_dport, ntohs(match.key->dst));
|
break;
|
default:
|
NL_SET_ERR_MSG_MOD(extack,
|
"Only UDP and TCP transports are supported for L4 matching");
|
netdev_err(priv->netdev,
|
"Only UDP and TCP transport are supported\n");
|
return -EINVAL;
|
}
|
|
if (match.mask->src || match.mask->dst)
|
*match_level = MLX5_MATCH_L4;
|
}
|
|
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_TCP)) {
|
struct flow_match_tcp match;
|
|
flow_rule_match_tcp(rule, &match);
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_flags,
|
ntohs(match.mask->flags));
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_flags,
|
ntohs(match.key->flags));
|
|
if (match.mask->flags)
|
*match_level = MLX5_MATCH_L4;
|
}
|
|
/* Currenlty supported only for MPLS over UDP */
|
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_MPLS) &&
|
!netif_is_bareudp(filter_dev)) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"Matching on MPLS is supported only for MPLS over UDP");
|
netdev_err(priv->netdev,
|
"Matching on MPLS is supported only for MPLS over UDP\n");
|
return -EOPNOTSUPP;
|
}
|
|
return 0;
|
}
|
|
static int parse_cls_flower(struct mlx5e_priv *priv,
|
struct mlx5e_tc_flow *flow,
|
struct mlx5_flow_spec *spec,
|
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;
|
struct mlx5_eswitch_rep *rep;
|
bool is_eswitch_flow;
|
int err;
|
|
inner_match_level = MLX5_MATCH_NONE;
|
outer_match_level = MLX5_MATCH_NONE;
|
|
err = __parse_cls_flower(priv, flow, 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;
|
|
is_eswitch_flow = mlx5e_is_eswitch_flow(flow);
|
if (!err && is_eswitch_flow) {
|
rep = rpriv->rep;
|
if (rep->vport != MLX5_VPORT_UPLINK &&
|
(esw->offloads.inline_mode != MLX5_INLINE_MODE_NONE &&
|
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",
|
non_tunnel_match_level, esw->offloads.inline_mode);
|
return -EOPNOTSUPP;
|
}
|
}
|
|
flow->attr->inner_match_level = inner_match_level;
|
flow->attr->outer_match_level = outer_match_level;
|
|
|
return err;
|
}
|
|
struct pedit_headers {
|
struct ethhdr eth;
|
struct vlan_hdr vlan;
|
struct iphdr ip4;
|
struct ipv6hdr ip6;
|
struct tcphdr tcp;
|
struct udphdr udp;
|
};
|
|
struct pedit_headers_action {
|
struct pedit_headers vals;
|
struct pedit_headers masks;
|
u32 pedits;
|
};
|
|
static int pedit_header_offsets[] = {
|
[FLOW_ACT_MANGLE_HDR_TYPE_ETH] = offsetof(struct pedit_headers, eth),
|
[FLOW_ACT_MANGLE_HDR_TYPE_IP4] = offsetof(struct pedit_headers, ip4),
|
[FLOW_ACT_MANGLE_HDR_TYPE_IP6] = offsetof(struct pedit_headers, ip6),
|
[FLOW_ACT_MANGLE_HDR_TYPE_TCP] = offsetof(struct pedit_headers, tcp),
|
[FLOW_ACT_MANGLE_HDR_TYPE_UDP] = offsetof(struct pedit_headers, udp),
|
};
|
|
#define pedit_header(_ph, _htype) ((void *)(_ph) + pedit_header_offsets[_htype])
|
|
static int set_pedit_val(u8 hdr_type, u32 mask, u32 val, u32 offset,
|
struct pedit_headers_action *hdrs)
|
{
|
u32 *curr_pmask, *curr_pval;
|
|
curr_pmask = (u32 *)(pedit_header(&hdrs->masks, hdr_type) + offset);
|
curr_pval = (u32 *)(pedit_header(&hdrs->vals, hdr_type) + offset);
|
|
if (*curr_pmask & mask) /* disallow acting twice on the same location */
|
goto out_err;
|
|
*curr_pmask |= mask;
|
*curr_pval |= (val & mask);
|
|
return 0;
|
|
out_err:
|
return -EOPNOTSUPP;
|
}
|
|
struct mlx5_fields {
|
u8 field;
|
u8 field_bsize;
|
u32 field_mask;
|
u32 offset;
|
u32 match_offset;
|
};
|
|
#define OFFLOAD(fw_field, field_bsize, field_mask, field, off, match_field) \
|
{MLX5_ACTION_IN_FIELD_OUT_ ## fw_field, field_bsize, field_mask, \
|
offsetof(struct pedit_headers, field) + (off), \
|
MLX5_BYTE_OFF(fte_match_set_lyr_2_4, match_field)}
|
|
/* masked values are the same and there are no rewrites that do not have a
|
* match.
|
*/
|
#define SAME_VAL_MASK(type, valp, maskp, matchvalp, matchmaskp) ({ \
|
type matchmaskx = *(type *)(matchmaskp); \
|
type matchvalx = *(type *)(matchvalp); \
|
type maskx = *(type *)(maskp); \
|
type valx = *(type *)(valp); \
|
\
|
(valx & maskx) == (matchvalx & matchmaskx) && !(maskx & (maskx ^ \
|
matchmaskx)); \
|
})
|
|
static bool cmp_val_mask(void *valp, void *maskp, void *matchvalp,
|
void *matchmaskp, u8 bsize)
|
{
|
bool same = false;
|
|
switch (bsize) {
|
case 8:
|
same = SAME_VAL_MASK(u8, valp, maskp, matchvalp, matchmaskp);
|
break;
|
case 16:
|
same = SAME_VAL_MASK(u16, valp, maskp, matchvalp, matchmaskp);
|
break;
|
case 32:
|
same = SAME_VAL_MASK(u32, valp, maskp, matchvalp, matchmaskp);
|
break;
|
}
|
|
return same;
|
}
|
|
static struct mlx5_fields fields[] = {
|
OFFLOAD(DMAC_47_16, 32, U32_MAX, eth.h_dest[0], 0, dmac_47_16),
|
OFFLOAD(DMAC_15_0, 16, U16_MAX, eth.h_dest[4], 0, dmac_15_0),
|
OFFLOAD(SMAC_47_16, 32, U32_MAX, eth.h_source[0], 0, smac_47_16),
|
OFFLOAD(SMAC_15_0, 16, U16_MAX, eth.h_source[4], 0, smac_15_0),
|
OFFLOAD(ETHERTYPE, 16, U16_MAX, eth.h_proto, 0, ethertype),
|
OFFLOAD(FIRST_VID, 16, U16_MAX, vlan.h_vlan_TCI, 0, first_vid),
|
|
OFFLOAD(IP_DSCP, 8, 0xfc, ip4.tos, 0, ip_dscp),
|
OFFLOAD(IP_TTL, 8, U8_MAX, ip4.ttl, 0, ttl_hoplimit),
|
OFFLOAD(SIPV4, 32, U32_MAX, ip4.saddr, 0, src_ipv4_src_ipv6.ipv4_layout.ipv4),
|
OFFLOAD(DIPV4, 32, U32_MAX, ip4.daddr, 0, dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
|
|
OFFLOAD(SIPV6_127_96, 32, U32_MAX, ip6.saddr.s6_addr32[0], 0,
|
src_ipv4_src_ipv6.ipv6_layout.ipv6[0]),
|
OFFLOAD(SIPV6_95_64, 32, U32_MAX, ip6.saddr.s6_addr32[1], 0,
|
src_ipv4_src_ipv6.ipv6_layout.ipv6[4]),
|
OFFLOAD(SIPV6_63_32, 32, U32_MAX, ip6.saddr.s6_addr32[2], 0,
|
src_ipv4_src_ipv6.ipv6_layout.ipv6[8]),
|
OFFLOAD(SIPV6_31_0, 32, U32_MAX, ip6.saddr.s6_addr32[3], 0,
|
src_ipv4_src_ipv6.ipv6_layout.ipv6[12]),
|
OFFLOAD(DIPV6_127_96, 32, U32_MAX, ip6.daddr.s6_addr32[0], 0,
|
dst_ipv4_dst_ipv6.ipv6_layout.ipv6[0]),
|
OFFLOAD(DIPV6_95_64, 32, U32_MAX, ip6.daddr.s6_addr32[1], 0,
|
dst_ipv4_dst_ipv6.ipv6_layout.ipv6[4]),
|
OFFLOAD(DIPV6_63_32, 32, U32_MAX, ip6.daddr.s6_addr32[2], 0,
|
dst_ipv4_dst_ipv6.ipv6_layout.ipv6[8]),
|
OFFLOAD(DIPV6_31_0, 32, U32_MAX, ip6.daddr.s6_addr32[3], 0,
|
dst_ipv4_dst_ipv6.ipv6_layout.ipv6[12]),
|
OFFLOAD(IPV6_HOPLIMIT, 8, U8_MAX, ip6.hop_limit, 0, ttl_hoplimit),
|
OFFLOAD(IP_DSCP, 16, 0xc00f, ip6, 0, ip_dscp),
|
|
OFFLOAD(TCP_SPORT, 16, U16_MAX, tcp.source, 0, tcp_sport),
|
OFFLOAD(TCP_DPORT, 16, U16_MAX, tcp.dest, 0, tcp_dport),
|
/* in linux iphdr tcp_flags is 8 bits long */
|
OFFLOAD(TCP_FLAGS, 8, U8_MAX, tcp.ack_seq, 5, tcp_flags),
|
|
OFFLOAD(UDP_SPORT, 16, U16_MAX, udp.source, 0, udp_sport),
|
OFFLOAD(UDP_DPORT, 16, U16_MAX, udp.dest, 0, udp_dport),
|
};
|
|
static unsigned long mask_to_le(unsigned long mask, int size)
|
{
|
__be32 mask_be32;
|
__be16 mask_be16;
|
|
if (size == 32) {
|
mask_be32 = (__force __be32)(mask);
|
mask = (__force unsigned long)cpu_to_le32(be32_to_cpu(mask_be32));
|
} else if (size == 16) {
|
mask_be32 = (__force __be32)(mask);
|
mask_be16 = *(__be16 *)&mask_be32;
|
mask = (__force unsigned long)cpu_to_le16(be16_to_cpu(mask_be16));
|
}
|
|
return mask;
|
}
|
static int offload_pedit_fields(struct mlx5e_priv *priv,
|
int namespace,
|
struct pedit_headers_action *hdrs,
|
struct mlx5e_tc_flow_parse_attr *parse_attr,
|
u32 *action_flags,
|
struct netlink_ext_ack *extack)
|
{
|
struct pedit_headers *set_masks, *add_masks, *set_vals, *add_vals;
|
int i, action_size, first, last, next_z;
|
void *headers_c, *headers_v, *action, *vals_p;
|
u32 *s_masks_p, *a_masks_p, s_mask, a_mask;
|
struct mlx5e_tc_mod_hdr_acts *mod_acts;
|
struct mlx5_fields *f;
|
unsigned long mask, field_mask;
|
int err;
|
u8 cmd;
|
|
mod_acts = &parse_attr->mod_hdr_acts;
|
headers_c = get_match_headers_criteria(*action_flags, &parse_attr->spec);
|
headers_v = get_match_headers_value(*action_flags, &parse_attr->spec);
|
|
set_masks = &hdrs[0].masks;
|
add_masks = &hdrs[1].masks;
|
set_vals = &hdrs[0].vals;
|
add_vals = &hdrs[1].vals;
|
|
action_size = MLX5_UN_SZ_BYTES(set_add_copy_action_in_auto);
|
|
for (i = 0; i < ARRAY_SIZE(fields); i++) {
|
bool skip;
|
|
f = &fields[i];
|
/* avoid seeing bits set from previous iterations */
|
s_mask = 0;
|
a_mask = 0;
|
|
s_masks_p = (void *)set_masks + f->offset;
|
a_masks_p = (void *)add_masks + f->offset;
|
|
s_mask = *s_masks_p & f->field_mask;
|
a_mask = *a_masks_p & f->field_mask;
|
|
if (!s_mask && !a_mask) /* nothing to offload here */
|
continue;
|
|
if (s_mask && a_mask) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"can't set and add to the same HW field");
|
printk(KERN_WARNING "mlx5: can't set and add to the same HW field (%x)\n", f->field);
|
return -EOPNOTSUPP;
|
}
|
|
skip = false;
|
if (s_mask) {
|
void *match_mask = headers_c + f->match_offset;
|
void *match_val = headers_v + f->match_offset;
|
|
cmd = MLX5_ACTION_TYPE_SET;
|
mask = s_mask;
|
vals_p = (void *)set_vals + f->offset;
|
/* don't rewrite if we have a match on the same value */
|
if (cmp_val_mask(vals_p, s_masks_p, match_val,
|
match_mask, f->field_bsize))
|
skip = true;
|
/* clear to denote we consumed this field */
|
*s_masks_p &= ~f->field_mask;
|
} else {
|
cmd = MLX5_ACTION_TYPE_ADD;
|
mask = a_mask;
|
vals_p = (void *)add_vals + f->offset;
|
/* add 0 is no change */
|
if ((*(u32 *)vals_p & f->field_mask) == 0)
|
skip = true;
|
/* clear to denote we consumed this field */
|
*a_masks_p &= ~f->field_mask;
|
}
|
if (skip)
|
continue;
|
|
mask = mask_to_le(mask, f->field_bsize);
|
|
first = find_first_bit(&mask, f->field_bsize);
|
next_z = find_next_zero_bit(&mask, f->field_bsize, first);
|
last = find_last_bit(&mask, f->field_bsize);
|
if (first < next_z && next_z < last) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"rewrite of few sub-fields isn't supported");
|
printk(KERN_WARNING "mlx5: rewrite of few sub-fields (mask %lx) isn't offloaded\n",
|
mask);
|
return -EOPNOTSUPP;
|
}
|
|
err = alloc_mod_hdr_actions(priv->mdev, namespace, mod_acts);
|
if (err) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"too many pedit actions, can't offload");
|
mlx5_core_warn(priv->mdev,
|
"mlx5: parsed %d pedit actions, can't do more\n",
|
mod_acts->num_actions);
|
return err;
|
}
|
|
action = mod_acts->actions +
|
(mod_acts->num_actions * action_size);
|
MLX5_SET(set_action_in, action, action_type, cmd);
|
MLX5_SET(set_action_in, action, field, f->field);
|
|
if (cmd == MLX5_ACTION_TYPE_SET) {
|
int start;
|
|
field_mask = mask_to_le(f->field_mask, f->field_bsize);
|
|
/* if field is bit sized it can start not from first bit */
|
start = find_first_bit(&field_mask, f->field_bsize);
|
|
MLX5_SET(set_action_in, action, offset, first - start);
|
/* length is num of bits to be written, zero means length of 32 */
|
MLX5_SET(set_action_in, action, length, (last - first + 1));
|
}
|
|
if (f->field_bsize == 32)
|
MLX5_SET(set_action_in, action, data, ntohl(*(__be32 *)vals_p) >> first);
|
else if (f->field_bsize == 16)
|
MLX5_SET(set_action_in, action, data, ntohs(*(__be16 *)vals_p) >> first);
|
else if (f->field_bsize == 8)
|
MLX5_SET(set_action_in, action, data, *(u8 *)vals_p >> first);
|
|
++mod_acts->num_actions;
|
}
|
|
return 0;
|
}
|
|
static int mlx5e_flow_namespace_max_modify_action(struct mlx5_core_dev *mdev,
|
int namespace)
|
{
|
if (namespace == MLX5_FLOW_NAMESPACE_FDB) /* FDB offloading */
|
return MLX5_CAP_ESW_FLOWTABLE_FDB(mdev, max_modify_header_actions);
|
else /* namespace is MLX5_FLOW_NAMESPACE_KERNEL - NIC offloading */
|
return MLX5_CAP_FLOWTABLE_NIC_RX(mdev, max_modify_header_actions);
|
}
|
|
int alloc_mod_hdr_actions(struct mlx5_core_dev *mdev,
|
int namespace,
|
struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts)
|
{
|
int action_size, new_num_actions, max_hw_actions;
|
size_t new_sz, old_sz;
|
void *ret;
|
|
if (mod_hdr_acts->num_actions < mod_hdr_acts->max_actions)
|
return 0;
|
|
action_size = MLX5_UN_SZ_BYTES(set_add_copy_action_in_auto);
|
|
max_hw_actions = mlx5e_flow_namespace_max_modify_action(mdev,
|
namespace);
|
new_num_actions = min(max_hw_actions,
|
mod_hdr_acts->actions ?
|
mod_hdr_acts->max_actions * 2 : 1);
|
if (mod_hdr_acts->max_actions == new_num_actions)
|
return -ENOSPC;
|
|
new_sz = action_size * new_num_actions;
|
old_sz = mod_hdr_acts->max_actions * action_size;
|
ret = krealloc(mod_hdr_acts->actions, new_sz, GFP_KERNEL);
|
if (!ret)
|
return -ENOMEM;
|
|
memset(ret + old_sz, 0, new_sz - old_sz);
|
mod_hdr_acts->actions = ret;
|
mod_hdr_acts->max_actions = new_num_actions;
|
|
return 0;
|
}
|
|
void dealloc_mod_hdr_actions(struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts)
|
{
|
kfree(mod_hdr_acts->actions);
|
mod_hdr_acts->actions = NULL;
|
mod_hdr_acts->num_actions = 0;
|
mod_hdr_acts->max_actions = 0;
|
}
|
|
static const struct pedit_headers zero_masks = {};
|
|
static int
|
parse_pedit_to_modify_hdr(struct mlx5e_priv *priv,
|
const struct flow_action_entry *act, int namespace,
|
struct mlx5e_tc_flow_parse_attr *parse_attr,
|
struct pedit_headers_action *hdrs,
|
struct netlink_ext_ack *extack)
|
{
|
u8 cmd = (act->id == FLOW_ACTION_MANGLE) ? 0 : 1;
|
int err = -EOPNOTSUPP;
|
u32 mask, val, offset;
|
u8 htype;
|
|
htype = act->mangle.htype;
|
err = -EOPNOTSUPP; /* can't be all optimistic */
|
|
if (htype == FLOW_ACT_MANGLE_UNSPEC) {
|
NL_SET_ERR_MSG_MOD(extack, "legacy pedit isn't offloaded");
|
goto out_err;
|
}
|
|
if (!mlx5e_flow_namespace_max_modify_action(priv->mdev, namespace)) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"The pedit offload action is not supported");
|
goto out_err;
|
}
|
|
mask = act->mangle.mask;
|
val = act->mangle.val;
|
offset = act->mangle.offset;
|
|
err = set_pedit_val(htype, ~mask, val, offset, &hdrs[cmd]);
|
if (err)
|
goto out_err;
|
|
hdrs[cmd].pedits++;
|
|
return 0;
|
out_err:
|
return err;
|
}
|
|
static int
|
parse_pedit_to_reformat(struct mlx5e_priv *priv,
|
const struct flow_action_entry *act,
|
struct mlx5e_tc_flow_parse_attr *parse_attr,
|
struct netlink_ext_ack *extack)
|
{
|
u32 mask, val, offset;
|
u32 *p;
|
|
if (act->id != FLOW_ACTION_MANGLE)
|
return -EOPNOTSUPP;
|
|
if (act->mangle.htype != FLOW_ACT_MANGLE_HDR_TYPE_ETH) {
|
NL_SET_ERR_MSG_MOD(extack, "Only Ethernet modification is supported");
|
return -EOPNOTSUPP;
|
}
|
|
mask = ~act->mangle.mask;
|
val = act->mangle.val;
|
offset = act->mangle.offset;
|
p = (u32 *)&parse_attr->eth;
|
*(p + (offset >> 2)) |= (val & mask);
|
|
return 0;
|
}
|
|
static int parse_tc_pedit_action(struct mlx5e_priv *priv,
|
const struct flow_action_entry *act, int namespace,
|
struct mlx5e_tc_flow_parse_attr *parse_attr,
|
struct pedit_headers_action *hdrs,
|
struct mlx5e_tc_flow *flow,
|
struct netlink_ext_ack *extack)
|
{
|
if (flow && flow_flag_test(flow, L3_TO_L2_DECAP))
|
return parse_pedit_to_reformat(priv, act, parse_attr, extack);
|
|
return parse_pedit_to_modify_hdr(priv, act, namespace,
|
parse_attr, hdrs, extack);
|
}
|
|
static int alloc_tc_pedit_action(struct mlx5e_priv *priv, int namespace,
|
struct mlx5e_tc_flow_parse_attr *parse_attr,
|
struct pedit_headers_action *hdrs,
|
u32 *action_flags,
|
struct netlink_ext_ack *extack)
|
{
|
struct pedit_headers *cmd_masks;
|
int err;
|
u8 cmd;
|
|
err = offload_pedit_fields(priv, namespace, hdrs, parse_attr,
|
action_flags, extack);
|
if (err < 0)
|
goto out_dealloc_parsed_actions;
|
|
for (cmd = 0; cmd < __PEDIT_CMD_MAX; cmd++) {
|
cmd_masks = &hdrs[cmd].masks;
|
if (memcmp(cmd_masks, &zero_masks, sizeof(zero_masks))) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"attempt to offload an unsupported field");
|
netdev_warn(priv->netdev, "attempt to offload an unsupported field (cmd %d)\n", cmd);
|
print_hex_dump(KERN_WARNING, "mask: ", DUMP_PREFIX_ADDRESS,
|
16, 1, cmd_masks, sizeof(zero_masks), true);
|
err = -EOPNOTSUPP;
|
goto out_dealloc_parsed_actions;
|
}
|
}
|
|
return 0;
|
|
out_dealloc_parsed_actions:
|
dealloc_mod_hdr_actions(&parse_attr->mod_hdr_acts);
|
return err;
|
}
|
|
static bool csum_offload_supported(struct mlx5e_priv *priv,
|
u32 action,
|
u32 update_flags,
|
struct netlink_ext_ack *extack)
|
{
|
u32 prot_flags = TCA_CSUM_UPDATE_FLAG_IPV4HDR | TCA_CSUM_UPDATE_FLAG_TCP |
|
TCA_CSUM_UPDATE_FLAG_UDP;
|
|
/* The HW recalcs checksums only if re-writing headers */
|
if (!(action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"TC csum action is only offloaded with pedit");
|
netdev_warn(priv->netdev,
|
"TC csum action is only offloaded with pedit\n");
|
return false;
|
}
|
|
if (update_flags & ~prot_flags) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"can't offload TC csum action for some header/s");
|
netdev_warn(priv->netdev,
|
"can't offload TC csum action for some header/s - flags %#x\n",
|
update_flags);
|
return false;
|
}
|
|
return true;
|
}
|
|
struct ip_ttl_word {
|
__u8 ttl;
|
__u8 protocol;
|
__sum16 check;
|
};
|
|
struct ipv6_hoplimit_word {
|
__be16 payload_len;
|
__u8 nexthdr;
|
__u8 hop_limit;
|
};
|
|
static int is_action_keys_supported(const struct flow_action_entry *act,
|
bool ct_flow, bool *modify_ip_header,
|
bool *modify_tuple,
|
struct netlink_ext_ack *extack)
|
{
|
u32 mask, offset;
|
u8 htype;
|
|
htype = act->mangle.htype;
|
offset = act->mangle.offset;
|
mask = ~act->mangle.mask;
|
/* For IPv4 & IPv6 header check 4 byte word,
|
* to determine that modified fields
|
* are NOT ttl & hop_limit only.
|
*/
|
if (htype == FLOW_ACT_MANGLE_HDR_TYPE_IP4) {
|
struct ip_ttl_word *ttl_word =
|
(struct ip_ttl_word *)&mask;
|
|
if (offset != offsetof(struct iphdr, ttl) ||
|
ttl_word->protocol ||
|
ttl_word->check) {
|
*modify_ip_header = true;
|
}
|
|
if (offset >= offsetof(struct iphdr, saddr))
|
*modify_tuple = true;
|
|
if (ct_flow && *modify_tuple) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"can't offload re-write of ipv4 address with action ct");
|
return -EOPNOTSUPP;
|
}
|
} else if (htype == FLOW_ACT_MANGLE_HDR_TYPE_IP6) {
|
struct ipv6_hoplimit_word *hoplimit_word =
|
(struct ipv6_hoplimit_word *)&mask;
|
|
if (offset != offsetof(struct ipv6hdr, payload_len) ||
|
hoplimit_word->payload_len ||
|
hoplimit_word->nexthdr) {
|
*modify_ip_header = true;
|
}
|
|
if (ct_flow && offset >= offsetof(struct ipv6hdr, saddr))
|
*modify_tuple = true;
|
|
if (ct_flow && *modify_tuple) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"can't offload re-write of ipv6 address with action ct");
|
return -EOPNOTSUPP;
|
}
|
} else if (htype == FLOW_ACT_MANGLE_HDR_TYPE_TCP ||
|
htype == FLOW_ACT_MANGLE_HDR_TYPE_UDP) {
|
*modify_tuple = true;
|
if (ct_flow) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"can't offload re-write of transport header ports with action ct");
|
return -EOPNOTSUPP;
|
}
|
}
|
|
return 0;
|
}
|
|
static bool modify_tuple_supported(bool modify_tuple, bool ct_clear,
|
bool ct_flow, struct netlink_ext_ack *extack,
|
struct mlx5e_priv *priv,
|
struct mlx5_flow_spec *spec)
|
{
|
if (!modify_tuple || ct_clear)
|
return true;
|
|
if (ct_flow) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"can't offload tuple modification with non-clear ct()");
|
netdev_info(priv->netdev,
|
"can't offload tuple modification with non-clear ct()");
|
return false;
|
}
|
|
/* Add ct_state=-trk match so it will be offloaded for non ct flows
|
* (or after clear action), as otherwise, since the tuple is changed,
|
* we can't restore ct state
|
*/
|
if (mlx5_tc_ct_add_no_trk_match(spec)) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"can't offload tuple modification with ct matches and no ct(clear) action");
|
netdev_info(priv->netdev,
|
"can't offload tuple modification with ct matches and no ct(clear) action");
|
return false;
|
}
|
|
return true;
|
}
|
|
static bool modify_header_match_supported(struct mlx5e_priv *priv,
|
struct mlx5_flow_spec *spec,
|
struct flow_action *flow_action,
|
u32 actions, bool ct_flow,
|
bool ct_clear,
|
struct netlink_ext_ack *extack)
|
{
|
const struct flow_action_entry *act;
|
bool modify_ip_header, modify_tuple;
|
void *headers_c;
|
void *headers_v;
|
u16 ethertype;
|
u8 ip_proto;
|
int i, err;
|
|
headers_c = get_match_headers_criteria(actions, spec);
|
headers_v = get_match_headers_value(actions, spec);
|
ethertype = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ethertype);
|
|
/* for non-IP we only re-write MACs, so we're okay */
|
if (MLX5_GET(fte_match_set_lyr_2_4, headers_c, ip_version) == 0 &&
|
ethertype != ETH_P_IP && ethertype != ETH_P_IPV6)
|
goto out_ok;
|
|
modify_ip_header = false;
|
modify_tuple = false;
|
flow_action_for_each(i, act, flow_action) {
|
if (act->id != FLOW_ACTION_MANGLE &&
|
act->id != FLOW_ACTION_ADD)
|
continue;
|
|
err = is_action_keys_supported(act, ct_flow,
|
&modify_ip_header,
|
&modify_tuple, extack);
|
if (err)
|
return err;
|
}
|
|
if (!modify_tuple_supported(modify_tuple, ct_clear, ct_flow, extack,
|
priv, spec))
|
return false;
|
|
ip_proto = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ip_protocol);
|
if (modify_ip_header && ip_proto != IPPROTO_TCP &&
|
ip_proto != IPPROTO_UDP && ip_proto != IPPROTO_ICMP) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"can't offload re-write of non TCP/UDP");
|
netdev_info(priv->netdev, "can't offload re-write of ip proto %d\n",
|
ip_proto);
|
return false;
|
}
|
|
out_ok:
|
return true;
|
}
|
|
static bool actions_match_supported(struct mlx5e_priv *priv,
|
struct flow_action *flow_action,
|
struct mlx5e_tc_flow_parse_attr *parse_attr,
|
struct mlx5e_tc_flow *flow,
|
struct netlink_ext_ack *extack)
|
{
|
bool ct_flow = false, ct_clear = false;
|
u32 actions;
|
|
ct_clear = flow->attr->ct_attr.ct_action &
|
TCA_CT_ACT_CLEAR;
|
ct_flow = flow_flag_test(flow, CT) && !ct_clear;
|
actions = flow->attr->action;
|
|
if (mlx5e_is_eswitch_flow(flow)) {
|
if (flow->attr->esw_attr->split_count && ct_flow) {
|
/* All registers used by ct are cleared when using
|
* split rules.
|
*/
|
NL_SET_ERR_MSG_MOD(extack,
|
"Can't offload mirroring with action ct");
|
return false;
|
}
|
}
|
|
if (actions & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
|
return modify_header_match_supported(priv, &parse_attr->spec,
|
flow_action, actions,
|
ct_flow, ct_clear,
|
extack);
|
|
return true;
|
}
|
|
static bool same_port_devs(struct mlx5e_priv *priv, struct mlx5e_priv *peer_priv)
|
{
|
return priv->mdev == peer_priv->mdev;
|
}
|
|
static bool same_hw_devs(struct mlx5e_priv *priv, struct mlx5e_priv *peer_priv)
|
{
|
struct mlx5_core_dev *fmdev, *pmdev;
|
u64 fsystem_guid, psystem_guid;
|
|
fmdev = priv->mdev;
|
pmdev = peer_priv->mdev;
|
|
fsystem_guid = mlx5_query_nic_system_image_guid(fmdev);
|
psystem_guid = mlx5_query_nic_system_image_guid(pmdev);
|
|
return (fsystem_guid == psystem_guid);
|
}
|
|
static int add_vlan_rewrite_action(struct mlx5e_priv *priv, int namespace,
|
const struct flow_action_entry *act,
|
struct mlx5e_tc_flow_parse_attr *parse_attr,
|
struct pedit_headers_action *hdrs,
|
u32 *action, struct netlink_ext_ack *extack)
|
{
|
u16 mask16 = VLAN_VID_MASK;
|
u16 val16 = act->vlan.vid & VLAN_VID_MASK;
|
const struct flow_action_entry pedit_act = {
|
.id = FLOW_ACTION_MANGLE,
|
.mangle.htype = FLOW_ACT_MANGLE_HDR_TYPE_ETH,
|
.mangle.offset = offsetof(struct vlan_ethhdr, h_vlan_TCI),
|
.mangle.mask = ~(u32)be16_to_cpu(*(__be16 *)&mask16),
|
.mangle.val = (u32)be16_to_cpu(*(__be16 *)&val16),
|
};
|
u8 match_prio_mask, match_prio_val;
|
void *headers_c, *headers_v;
|
int err;
|
|
headers_c = get_match_headers_criteria(*action, &parse_attr->spec);
|
headers_v = get_match_headers_value(*action, &parse_attr->spec);
|
|
if (!(MLX5_GET(fte_match_set_lyr_2_4, headers_c, cvlan_tag) &&
|
MLX5_GET(fte_match_set_lyr_2_4, headers_v, cvlan_tag))) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"VLAN rewrite action must have VLAN protocol match");
|
return -EOPNOTSUPP;
|
}
|
|
match_prio_mask = MLX5_GET(fte_match_set_lyr_2_4, headers_c, first_prio);
|
match_prio_val = MLX5_GET(fte_match_set_lyr_2_4, headers_v, first_prio);
|
if (act->vlan.prio != (match_prio_val & match_prio_mask)) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"Changing VLAN prio is not supported");
|
return -EOPNOTSUPP;
|
}
|
|
err = parse_tc_pedit_action(priv, &pedit_act, namespace, parse_attr, hdrs, NULL, extack);
|
*action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
|
|
return err;
|
}
|
|
static int
|
add_vlan_prio_tag_rewrite_action(struct mlx5e_priv *priv,
|
struct mlx5e_tc_flow_parse_attr *parse_attr,
|
struct pedit_headers_action *hdrs,
|
u32 *action, struct netlink_ext_ack *extack)
|
{
|
const struct flow_action_entry prio_tag_act = {
|
.vlan.vid = 0,
|
.vlan.prio =
|
MLX5_GET(fte_match_set_lyr_2_4,
|
get_match_headers_value(*action,
|
&parse_attr->spec),
|
first_prio) &
|
MLX5_GET(fte_match_set_lyr_2_4,
|
get_match_headers_criteria(*action,
|
&parse_attr->spec),
|
first_prio),
|
};
|
|
return add_vlan_rewrite_action(priv, MLX5_FLOW_NAMESPACE_FDB,
|
&prio_tag_act, parse_attr, hdrs, action,
|
extack);
|
}
|
|
static int validate_goto_chain(struct mlx5e_priv *priv,
|
struct mlx5e_tc_flow *flow,
|
const struct flow_action_entry *act,
|
u32 actions,
|
struct netlink_ext_ack *extack)
|
{
|
bool is_esw = mlx5e_is_eswitch_flow(flow);
|
struct mlx5_flow_attr *attr = flow->attr;
|
bool ft_flow = mlx5e_is_ft_flow(flow);
|
u32 dest_chain = act->chain_index;
|
struct mlx5_fs_chains *chains;
|
struct mlx5_eswitch *esw;
|
u32 reformat_and_fwd;
|
u32 max_chain;
|
|
esw = priv->mdev->priv.eswitch;
|
chains = is_esw ? esw_chains(esw) : nic_chains(priv);
|
max_chain = mlx5_chains_get_chain_range(chains);
|
reformat_and_fwd = is_esw ?
|
MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev, reformat_and_fwd_to_table) :
|
MLX5_CAP_FLOWTABLE_NIC_RX(priv->mdev, reformat_and_fwd_to_table);
|
|
if (ft_flow) {
|
NL_SET_ERR_MSG_MOD(extack, "Goto action is not supported");
|
return -EOPNOTSUPP;
|
}
|
|
if (!mlx5_chains_backwards_supported(chains) &&
|
dest_chain <= attr->chain) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"Goto lower numbered chain isn't supported");
|
return -EOPNOTSUPP;
|
}
|
|
if (dest_chain > max_chain) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"Requested destination chain is out of supported range");
|
return -EOPNOTSUPP;
|
}
|
|
if (actions & (MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT |
|
MLX5_FLOW_CONTEXT_ACTION_DECAP) &&
|
!reformat_and_fwd) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"Goto chain is not allowed if action has reformat or decap");
|
return -EOPNOTSUPP;
|
}
|
|
return 0;
|
}
|
|
static int parse_tc_nic_actions(struct mlx5e_priv *priv,
|
struct flow_action *flow_action,
|
struct mlx5e_tc_flow_parse_attr *parse_attr,
|
struct mlx5e_tc_flow *flow,
|
struct netlink_ext_ack *extack)
|
{
|
struct mlx5_flow_attr *attr = flow->attr;
|
struct pedit_headers_action hdrs[2] = {};
|
const struct flow_action_entry *act;
|
struct mlx5_nic_flow_attr *nic_attr;
|
u32 action = 0;
|
int err, i;
|
|
if (!flow_action_has_entries(flow_action))
|
return -EINVAL;
|
|
if (!flow_action_hw_stats_check(flow_action, extack,
|
FLOW_ACTION_HW_STATS_DELAYED_BIT))
|
return -EOPNOTSUPP;
|
|
nic_attr = attr->nic_attr;
|
|
nic_attr->flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
|
|
flow_action_for_each(i, act, flow_action) {
|
switch (act->id) {
|
case FLOW_ACTION_ACCEPT:
|
action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
|
MLX5_FLOW_CONTEXT_ACTION_COUNT;
|
break;
|
case FLOW_ACTION_DROP:
|
action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
|
if (MLX5_CAP_FLOWTABLE(priv->mdev,
|
flow_table_properties_nic_receive.flow_counter))
|
action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
|
break;
|
case FLOW_ACTION_MANGLE:
|
case FLOW_ACTION_ADD:
|
err = parse_tc_pedit_action(priv, act, MLX5_FLOW_NAMESPACE_KERNEL,
|
parse_attr, hdrs, NULL, extack);
|
if (err)
|
return err;
|
|
action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
|
break;
|
case FLOW_ACTION_VLAN_MANGLE:
|
err = add_vlan_rewrite_action(priv,
|
MLX5_FLOW_NAMESPACE_KERNEL,
|
act, parse_attr, hdrs,
|
&action, extack);
|
if (err)
|
return err;
|
|
break;
|
case FLOW_ACTION_CSUM:
|
if (csum_offload_supported(priv, action,
|
act->csum_flags,
|
extack))
|
break;
|
|
return -EOPNOTSUPP;
|
case FLOW_ACTION_REDIRECT: {
|
struct net_device *peer_dev = act->dev;
|
|
if (priv->netdev->netdev_ops == peer_dev->netdev_ops &&
|
same_hw_devs(priv, netdev_priv(peer_dev))) {
|
parse_attr->mirred_ifindex[0] = peer_dev->ifindex;
|
flow_flag_set(flow, HAIRPIN);
|
action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
|
MLX5_FLOW_CONTEXT_ACTION_COUNT;
|
} else {
|
NL_SET_ERR_MSG_MOD(extack,
|
"device is not on same HW, can't offload");
|
netdev_warn(priv->netdev, "device %s not on same HW, can't offload\n",
|
peer_dev->name);
|
return -EINVAL;
|
}
|
}
|
break;
|
case FLOW_ACTION_MARK: {
|
u32 mark = act->mark;
|
|
if (mark & ~MLX5E_TC_FLOW_ID_MASK) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"Bad flow mark - only 16 bit is supported");
|
return -EINVAL;
|
}
|
|
nic_attr->flow_tag = mark;
|
action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
|
}
|
break;
|
case FLOW_ACTION_GOTO:
|
err = validate_goto_chain(priv, flow, act, action,
|
extack);
|
if (err)
|
return err;
|
|
action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
|
attr->dest_chain = act->chain_index;
|
break;
|
case FLOW_ACTION_CT:
|
err = mlx5_tc_ct_parse_action(get_ct_priv(priv), attr, act, extack);
|
if (err)
|
return err;
|
|
flow_flag_set(flow, CT);
|
break;
|
default:
|
NL_SET_ERR_MSG_MOD(extack, "The offload action is not supported");
|
return -EOPNOTSUPP;
|
}
|
}
|
|
if (hdrs[TCA_PEDIT_KEY_EX_CMD_SET].pedits ||
|
hdrs[TCA_PEDIT_KEY_EX_CMD_ADD].pedits) {
|
err = alloc_tc_pedit_action(priv, MLX5_FLOW_NAMESPACE_KERNEL,
|
parse_attr, hdrs, &action, extack);
|
if (err)
|
return err;
|
/* in case all pedit actions are skipped, remove the MOD_HDR
|
* flag.
|
*/
|
if (parse_attr->mod_hdr_acts.num_actions == 0) {
|
action &= ~MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
|
dealloc_mod_hdr_actions(&parse_attr->mod_hdr_acts);
|
}
|
}
|
|
attr->action = action;
|
|
if (attr->dest_chain) {
|
if (attr->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
|
NL_SET_ERR_MSG(extack, "Mirroring goto chain rules isn't supported");
|
return -EOPNOTSUPP;
|
}
|
attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
|
}
|
|
if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
|
attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
|
|
if (!actions_match_supported(priv, flow_action, parse_attr, flow, extack))
|
return -EOPNOTSUPP;
|
|
return 0;
|
}
|
|
struct encap_key {
|
const struct ip_tunnel_key *ip_tun_key;
|
struct mlx5e_tc_tunnel *tc_tunnel;
|
};
|
|
static inline int cmp_encap_info(struct encap_key *a,
|
struct encap_key *b)
|
{
|
return memcmp(a->ip_tun_key, b->ip_tun_key, sizeof(*a->ip_tun_key)) ||
|
a->tc_tunnel->tunnel_type != b->tc_tunnel->tunnel_type;
|
}
|
|
static inline int cmp_decap_info(struct mlx5e_decap_key *a,
|
struct mlx5e_decap_key *b)
|
{
|
return memcmp(&a->key, &b->key, sizeof(b->key));
|
}
|
|
static inline int hash_encap_info(struct encap_key *key)
|
{
|
return jhash(key->ip_tun_key, sizeof(*key->ip_tun_key),
|
key->tc_tunnel->tunnel_type);
|
}
|
|
static inline int hash_decap_info(struct mlx5e_decap_key *key)
|
{
|
return jhash(&key->key, sizeof(key->key), 0);
|
}
|
|
static bool is_merged_eswitch_vfs(struct mlx5e_priv *priv,
|
struct net_device *peer_netdev)
|
{
|
struct mlx5e_priv *peer_priv;
|
|
peer_priv = netdev_priv(peer_netdev);
|
|
return (MLX5_CAP_ESW(priv->mdev, merged_eswitch) &&
|
mlx5e_eswitch_vf_rep(priv->netdev) &&
|
mlx5e_eswitch_vf_rep(peer_netdev) &&
|
same_hw_devs(priv, peer_priv));
|
}
|
|
bool mlx5e_encap_take(struct mlx5e_encap_entry *e)
|
{
|
return refcount_inc_not_zero(&e->refcnt);
|
}
|
|
static bool mlx5e_decap_take(struct mlx5e_decap_entry *e)
|
{
|
return refcount_inc_not_zero(&e->refcnt);
|
}
|
|
static struct mlx5e_encap_entry *
|
mlx5e_encap_get(struct mlx5e_priv *priv, struct encap_key *key,
|
uintptr_t hash_key)
|
{
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
struct mlx5e_encap_entry *e;
|
struct encap_key e_key;
|
|
hash_for_each_possible_rcu(esw->offloads.encap_tbl, e,
|
encap_hlist, hash_key) {
|
e_key.ip_tun_key = &e->tun_info->key;
|
e_key.tc_tunnel = e->tunnel;
|
if (!cmp_encap_info(&e_key, key) &&
|
mlx5e_encap_take(e))
|
return e;
|
}
|
|
return NULL;
|
}
|
|
static struct mlx5e_decap_entry *
|
mlx5e_decap_get(struct mlx5e_priv *priv, struct mlx5e_decap_key *key,
|
uintptr_t hash_key)
|
{
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
struct mlx5e_decap_key r_key;
|
struct mlx5e_decap_entry *e;
|
|
hash_for_each_possible_rcu(esw->offloads.decap_tbl, e,
|
hlist, hash_key) {
|
r_key = e->key;
|
if (!cmp_decap_info(&r_key, key) &&
|
mlx5e_decap_take(e))
|
return e;
|
}
|
return NULL;
|
}
|
|
static struct ip_tunnel_info *dup_tun_info(const struct ip_tunnel_info *tun_info)
|
{
|
size_t tun_size = sizeof(*tun_info) + tun_info->options_len;
|
|
return kmemdup(tun_info, tun_size, GFP_KERNEL);
|
}
|
|
static bool is_duplicated_encap_entry(struct mlx5e_priv *priv,
|
struct mlx5e_tc_flow *flow,
|
int out_index,
|
struct mlx5e_encap_entry *e,
|
struct netlink_ext_ack *extack)
|
{
|
int i;
|
|
for (i = 0; i < out_index; i++) {
|
if (flow->encaps[i].e != e)
|
continue;
|
NL_SET_ERR_MSG_MOD(extack, "can't duplicate encap action");
|
netdev_err(priv->netdev, "can't duplicate encap action\n");
|
return true;
|
}
|
|
return false;
|
}
|
|
static int mlx5e_attach_encap(struct mlx5e_priv *priv,
|
struct mlx5e_tc_flow *flow,
|
struct net_device *mirred_dev,
|
int out_index,
|
struct netlink_ext_ack *extack,
|
struct net_device **encap_dev,
|
bool *encap_valid)
|
{
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
struct mlx5e_tc_flow_parse_attr *parse_attr;
|
struct mlx5_flow_attr *attr = flow->attr;
|
const struct ip_tunnel_info *tun_info;
|
struct encap_key key;
|
struct mlx5e_encap_entry *e;
|
unsigned short family;
|
uintptr_t hash_key;
|
int err = 0;
|
|
parse_attr = attr->parse_attr;
|
tun_info = parse_attr->tun_info[out_index];
|
family = ip_tunnel_info_af(tun_info);
|
key.ip_tun_key = &tun_info->key;
|
key.tc_tunnel = mlx5e_get_tc_tun(mirred_dev);
|
if (!key.tc_tunnel) {
|
NL_SET_ERR_MSG_MOD(extack, "Unsupported tunnel");
|
return -EOPNOTSUPP;
|
}
|
|
hash_key = hash_encap_info(&key);
|
|
mutex_lock(&esw->offloads.encap_tbl_lock);
|
e = mlx5e_encap_get(priv, &key, hash_key);
|
|
/* must verify if encap is valid or not */
|
if (e) {
|
/* Check that entry was not already attached to this flow */
|
if (is_duplicated_encap_entry(priv, flow, out_index, e, extack)) {
|
err = -EOPNOTSUPP;
|
goto out_err;
|
}
|
|
mutex_unlock(&esw->offloads.encap_tbl_lock);
|
wait_for_completion(&e->res_ready);
|
|
/* Protect against concurrent neigh update. */
|
mutex_lock(&esw->offloads.encap_tbl_lock);
|
if (e->compl_result < 0) {
|
err = -EREMOTEIO;
|
goto out_err;
|
}
|
goto attach_flow;
|
}
|
|
e = kzalloc(sizeof(*e), GFP_KERNEL);
|
if (!e) {
|
err = -ENOMEM;
|
goto out_err;
|
}
|
|
refcount_set(&e->refcnt, 1);
|
init_completion(&e->res_ready);
|
|
tun_info = dup_tun_info(tun_info);
|
if (!tun_info) {
|
err = -ENOMEM;
|
goto out_err_init;
|
}
|
e->tun_info = tun_info;
|
err = mlx5e_tc_tun_init_encap_attr(mirred_dev, priv, e, extack);
|
if (err)
|
goto out_err_init;
|
|
INIT_LIST_HEAD(&e->flows);
|
hash_add_rcu(esw->offloads.encap_tbl, &e->encap_hlist, hash_key);
|
mutex_unlock(&esw->offloads.encap_tbl_lock);
|
|
if (family == AF_INET)
|
err = mlx5e_tc_tun_create_header_ipv4(priv, mirred_dev, e);
|
else if (family == AF_INET6)
|
err = mlx5e_tc_tun_create_header_ipv6(priv, mirred_dev, e);
|
|
/* Protect against concurrent neigh update. */
|
mutex_lock(&esw->offloads.encap_tbl_lock);
|
complete_all(&e->res_ready);
|
if (err) {
|
e->compl_result = err;
|
goto out_err;
|
}
|
e->compl_result = 1;
|
|
attach_flow:
|
flow->encaps[out_index].e = e;
|
list_add(&flow->encaps[out_index].list, &e->flows);
|
flow->encaps[out_index].index = out_index;
|
*encap_dev = e->out_dev;
|
if (e->flags & MLX5_ENCAP_ENTRY_VALID) {
|
attr->esw_attr->dests[out_index].pkt_reformat = e->pkt_reformat;
|
attr->esw_attr->dests[out_index].flags |= MLX5_ESW_DEST_ENCAP_VALID;
|
*encap_valid = true;
|
} else {
|
*encap_valid = false;
|
}
|
mutex_unlock(&esw->offloads.encap_tbl_lock);
|
|
return err;
|
|
out_err:
|
mutex_unlock(&esw->offloads.encap_tbl_lock);
|
if (e)
|
mlx5e_encap_put(priv, e);
|
return err;
|
|
out_err_init:
|
mutex_unlock(&esw->offloads.encap_tbl_lock);
|
kfree(tun_info);
|
kfree(e);
|
return err;
|
}
|
|
static int mlx5e_attach_decap(struct mlx5e_priv *priv,
|
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->attr->esw_attr;
|
struct mlx5e_tc_flow_parse_attr *parse_attr;
|
struct mlx5e_decap_entry *d;
|
struct mlx5e_decap_key key;
|
uintptr_t hash_key;
|
int err = 0;
|
|
parse_attr = flow->attr->parse_attr;
|
if (sizeof(parse_attr->eth) > MLX5_CAP_ESW(priv->mdev, max_encap_header_size)) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"encap header larger than max supported");
|
return -EOPNOTSUPP;
|
}
|
|
key.key = parse_attr->eth;
|
hash_key = hash_decap_info(&key);
|
mutex_lock(&esw->offloads.decap_tbl_lock);
|
d = mlx5e_decap_get(priv, &key, hash_key);
|
if (d) {
|
mutex_unlock(&esw->offloads.decap_tbl_lock);
|
wait_for_completion(&d->res_ready);
|
mutex_lock(&esw->offloads.decap_tbl_lock);
|
if (d->compl_result) {
|
err = -EREMOTEIO;
|
goto out_free;
|
}
|
goto found;
|
}
|
|
d = kzalloc(sizeof(*d), GFP_KERNEL);
|
if (!d) {
|
err = -ENOMEM;
|
goto out_err;
|
}
|
|
d->key = key;
|
refcount_set(&d->refcnt, 1);
|
init_completion(&d->res_ready);
|
INIT_LIST_HEAD(&d->flows);
|
hash_add_rcu(esw->offloads.decap_tbl, &d->hlist, hash_key);
|
mutex_unlock(&esw->offloads.decap_tbl_lock);
|
|
d->pkt_reformat = mlx5_packet_reformat_alloc(priv->mdev,
|
MLX5_REFORMAT_TYPE_L3_TUNNEL_TO_L2,
|
sizeof(parse_attr->eth),
|
&parse_attr->eth,
|
MLX5_FLOW_NAMESPACE_FDB);
|
if (IS_ERR(d->pkt_reformat)) {
|
err = PTR_ERR(d->pkt_reformat);
|
d->compl_result = err;
|
}
|
mutex_lock(&esw->offloads.decap_tbl_lock);
|
complete_all(&d->res_ready);
|
if (err)
|
goto out_free;
|
|
found:
|
flow->decap_reformat = d;
|
attr->decap_pkt_reformat = d->pkt_reformat;
|
list_add(&flow->l3_to_l2_reformat, &d->flows);
|
mutex_unlock(&esw->offloads.decap_tbl_lock);
|
return 0;
|
|
out_free:
|
mutex_unlock(&esw->offloads.decap_tbl_lock);
|
mlx5e_decap_put(priv, d);
|
return err;
|
|
out_err:
|
mutex_unlock(&esw->offloads.decap_tbl_lock);
|
return err;
|
}
|
|
static int parse_tc_vlan_action(struct mlx5e_priv *priv,
|
const struct flow_action_entry *act,
|
struct mlx5_esw_flow_attr *attr,
|
u32 *action)
|
{
|
u8 vlan_idx = attr->total_vlan;
|
|
if (vlan_idx >= MLX5_FS_VLAN_DEPTH)
|
return -EOPNOTSUPP;
|
|
switch (act->id) {
|
case FLOW_ACTION_VLAN_POP:
|
if (vlan_idx) {
|
if (!mlx5_eswitch_vlan_actions_supported(priv->mdev,
|
MLX5_FS_VLAN_DEPTH))
|
return -EOPNOTSUPP;
|
|
*action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP_2;
|
} else {
|
*action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
|
}
|
break;
|
case FLOW_ACTION_VLAN_PUSH:
|
attr->vlan_vid[vlan_idx] = act->vlan.vid;
|
attr->vlan_prio[vlan_idx] = act->vlan.prio;
|
attr->vlan_proto[vlan_idx] = act->vlan.proto;
|
if (!attr->vlan_proto[vlan_idx])
|
attr->vlan_proto[vlan_idx] = htons(ETH_P_8021Q);
|
|
if (vlan_idx) {
|
if (!mlx5_eswitch_vlan_actions_supported(priv->mdev,
|
MLX5_FS_VLAN_DEPTH))
|
return -EOPNOTSUPP;
|
|
*action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH_2;
|
} else {
|
if (!mlx5_eswitch_vlan_actions_supported(priv->mdev, 1) &&
|
(act->vlan.proto != htons(ETH_P_8021Q) ||
|
act->vlan.prio))
|
return -EOPNOTSUPP;
|
|
*action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH;
|
}
|
break;
|
default:
|
return -EINVAL;
|
}
|
|
attr->total_vlan = vlan_idx + 1;
|
|
return 0;
|
}
|
|
static struct net_device *get_fdb_out_dev(struct net_device *uplink_dev,
|
struct net_device *out_dev)
|
{
|
struct net_device *fdb_out_dev = out_dev;
|
struct net_device *uplink_upper;
|
|
rcu_read_lock();
|
uplink_upper = netdev_master_upper_dev_get_rcu(uplink_dev);
|
if (uplink_upper && netif_is_lag_master(uplink_upper) &&
|
uplink_upper == out_dev) {
|
fdb_out_dev = uplink_dev;
|
} else if (netif_is_lag_master(out_dev)) {
|
fdb_out_dev = bond_option_active_slave_get_rcu(netdev_priv(out_dev));
|
if (fdb_out_dev &&
|
(!mlx5e_eswitch_rep(fdb_out_dev) ||
|
!netdev_port_same_parent_id(fdb_out_dev, uplink_dev)))
|
fdb_out_dev = NULL;
|
}
|
rcu_read_unlock();
|
return fdb_out_dev;
|
}
|
|
static int add_vlan_push_action(struct mlx5e_priv *priv,
|
struct mlx5_flow_attr *attr,
|
struct net_device **out_dev,
|
u32 *action)
|
{
|
struct net_device *vlan_dev = *out_dev;
|
struct flow_action_entry vlan_act = {
|
.id = FLOW_ACTION_VLAN_PUSH,
|
.vlan.vid = vlan_dev_vlan_id(vlan_dev),
|
.vlan.proto = vlan_dev_vlan_proto(vlan_dev),
|
.vlan.prio = 0,
|
};
|
int err;
|
|
err = parse_tc_vlan_action(priv, &vlan_act, attr->esw_attr, action);
|
if (err)
|
return err;
|
|
rcu_read_lock();
|
*out_dev = dev_get_by_index_rcu(dev_net(vlan_dev), dev_get_iflink(vlan_dev));
|
rcu_read_unlock();
|
if (!*out_dev)
|
return -ENODEV;
|
|
if (is_vlan_dev(*out_dev))
|
err = add_vlan_push_action(priv, attr, out_dev, action);
|
|
return err;
|
}
|
|
static int add_vlan_pop_action(struct mlx5e_priv *priv,
|
struct mlx5_flow_attr *attr,
|
u32 *action)
|
{
|
struct flow_action_entry vlan_act = {
|
.id = FLOW_ACTION_VLAN_POP,
|
};
|
int nest_level, err = 0;
|
|
nest_level = attr->parse_attr->filter_dev->lower_level -
|
priv->netdev->lower_level;
|
while (nest_level--) {
|
err = parse_tc_vlan_action(priv, &vlan_act, attr->esw_attr, action);
|
if (err)
|
return err;
|
}
|
|
return err;
|
}
|
|
static bool same_hw_reps(struct mlx5e_priv *priv,
|
struct net_device *peer_netdev)
|
{
|
struct mlx5e_priv *peer_priv;
|
|
peer_priv = netdev_priv(peer_netdev);
|
|
return mlx5e_eswitch_rep(priv->netdev) &&
|
mlx5e_eswitch_rep(peer_netdev) &&
|
same_hw_devs(priv, peer_priv);
|
}
|
|
static bool is_lag_dev(struct mlx5e_priv *priv,
|
struct net_device *peer_netdev)
|
{
|
return ((mlx5_lag_is_sriov(priv->mdev) ||
|
mlx5_lag_is_multipath(priv->mdev)) &&
|
same_hw_reps(priv, peer_netdev));
|
}
|
|
bool mlx5e_is_valid_eswitch_fwd_dev(struct mlx5e_priv *priv,
|
struct net_device *out_dev)
|
{
|
if (is_merged_eswitch_vfs(priv, out_dev))
|
return true;
|
|
if (is_lag_dev(priv, out_dev))
|
return true;
|
|
return mlx5e_eswitch_rep(out_dev) &&
|
same_port_devs(priv, netdev_priv(out_dev));
|
}
|
|
static bool is_duplicated_output_device(struct net_device *dev,
|
struct net_device *out_dev,
|
int *ifindexes, int if_count,
|
struct netlink_ext_ack *extack)
|
{
|
int i;
|
|
for (i = 0; i < if_count; i++) {
|
if (ifindexes[i] == out_dev->ifindex) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"can't duplicate output to same device");
|
netdev_err(dev, "can't duplicate output to same device: %s\n",
|
out_dev->name);
|
return true;
|
}
|
}
|
|
return false;
|
}
|
|
static int verify_uplink_forwarding(struct mlx5e_priv *priv,
|
struct mlx5e_tc_flow *flow,
|
struct net_device *out_dev,
|
struct netlink_ext_ack *extack)
|
{
|
struct mlx5_esw_flow_attr *attr = flow->attr->esw_attr;
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
struct mlx5e_rep_priv *rep_priv;
|
|
/* Forwarding non encapsulated traffic between
|
* uplink ports is allowed only if
|
* termination_table_raw_traffic cap is set.
|
*
|
* Input vport was stored attr->in_rep.
|
* In LAG case, *priv* is the private data of
|
* uplink which may be not the input vport.
|
*/
|
rep_priv = mlx5e_rep_to_rep_priv(attr->in_rep);
|
|
if (!(mlx5e_eswitch_uplink_rep(rep_priv->netdev) &&
|
mlx5e_eswitch_uplink_rep(out_dev)))
|
return 0;
|
|
if (!MLX5_CAP_ESW_FLOWTABLE_FDB(esw->dev,
|
termination_table_raw_traffic)) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"devices are both uplink, can't offload forwarding");
|
pr_err("devices %s %s are both uplink, can't offload forwarding\n",
|
priv->netdev->name, out_dev->name);
|
return -EOPNOTSUPP;
|
} else if (out_dev != rep_priv->netdev) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"devices are not the same uplink, can't offload forwarding");
|
pr_err("devices %s %s are both uplink but not the same, can't offload forwarding\n",
|
priv->netdev->name, out_dev->name);
|
return -EOPNOTSUPP;
|
}
|
return 0;
|
}
|
|
static int parse_tc_fdb_actions(struct mlx5e_priv *priv,
|
struct flow_action *flow_action,
|
struct mlx5e_tc_flow *flow,
|
struct netlink_ext_ack *extack,
|
struct net_device *filter_dev)
|
{
|
struct pedit_headers_action hdrs[2] = {};
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
struct mlx5e_tc_flow_parse_attr *parse_attr;
|
struct mlx5e_rep_priv *rpriv = priv->ppriv;
|
const struct ip_tunnel_info *info = NULL;
|
struct mlx5_flow_attr *attr = flow->attr;
|
int ifindexes[MLX5_MAX_FLOW_FWD_VPORTS];
|
bool ft_flow = mlx5e_is_ft_flow(flow);
|
const struct flow_action_entry *act;
|
struct mlx5_esw_flow_attr *esw_attr;
|
bool encap = false, decap = false;
|
u32 action = attr->action;
|
int err, i, if_count = 0;
|
bool mpls_push = false;
|
|
if (!flow_action_has_entries(flow_action))
|
return -EINVAL;
|
|
if (!flow_action_hw_stats_check(flow_action, extack,
|
FLOW_ACTION_HW_STATS_DELAYED_BIT))
|
return -EOPNOTSUPP;
|
|
esw_attr = attr->esw_attr;
|
parse_attr = attr->parse_attr;
|
|
flow_action_for_each(i, act, flow_action) {
|
switch (act->id) {
|
case FLOW_ACTION_DROP:
|
action |= MLX5_FLOW_CONTEXT_ACTION_DROP |
|
MLX5_FLOW_CONTEXT_ACTION_COUNT;
|
break;
|
case FLOW_ACTION_TRAP:
|
if (!flow_offload_has_one_action(flow_action)) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"action trap is supported as a sole action only");
|
return -EOPNOTSUPP;
|
}
|
action |= (MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
|
MLX5_FLOW_CONTEXT_ACTION_COUNT);
|
attr->flags |= MLX5_ESW_ATTR_FLAG_SLOW_PATH;
|
break;
|
case FLOW_ACTION_MPLS_PUSH:
|
if (!MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev,
|
reformat_l2_to_l3_tunnel) ||
|
act->mpls_push.proto != htons(ETH_P_MPLS_UC)) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"mpls push is supported only for mpls_uc protocol");
|
return -EOPNOTSUPP;
|
}
|
mpls_push = true;
|
break;
|
case FLOW_ACTION_MPLS_POP:
|
/* we only support mpls pop if it is the first action
|
* and the filter net device is bareudp. Subsequent
|
* actions can be pedit and the last can be mirred
|
* egress redirect.
|
*/
|
if (i) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"mpls pop supported only as first action");
|
return -EOPNOTSUPP;
|
}
|
if (!netif_is_bareudp(filter_dev)) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"mpls pop supported only on bareudp devices");
|
return -EOPNOTSUPP;
|
}
|
|
parse_attr->eth.h_proto = act->mpls_pop.proto;
|
action |= MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT;
|
flow_flag_set(flow, L3_TO_L2_DECAP);
|
break;
|
case FLOW_ACTION_MANGLE:
|
case FLOW_ACTION_ADD:
|
err = parse_tc_pedit_action(priv, act, MLX5_FLOW_NAMESPACE_FDB,
|
parse_attr, hdrs, flow, extack);
|
if (err)
|
return err;
|
|
if (!flow_flag_test(flow, L3_TO_L2_DECAP)) {
|
action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
|
esw_attr->split_count = esw_attr->out_count;
|
}
|
break;
|
case FLOW_ACTION_CSUM:
|
if (csum_offload_supported(priv, action,
|
act->csum_flags, extack))
|
break;
|
|
return -EOPNOTSUPP;
|
case FLOW_ACTION_REDIRECT:
|
case FLOW_ACTION_MIRRED: {
|
struct mlx5e_priv *out_priv;
|
struct net_device *out_dev;
|
|
out_dev = act->dev;
|
if (!out_dev) {
|
/* out_dev is NULL when filters with
|
* non-existing mirred device are replayed to
|
* the driver.
|
*/
|
return -EINVAL;
|
}
|
|
if (mpls_push && !netif_is_bareudp(out_dev)) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"mpls is supported only through a bareudp device");
|
return -EOPNOTSUPP;
|
}
|
|
if (ft_flow && out_dev == priv->netdev) {
|
/* Ignore forward to self rules generated
|
* by adding both mlx5 devs to the flow table
|
* block on a normal nft offload setup.
|
*/
|
return -EOPNOTSUPP;
|
}
|
|
if (esw_attr->out_count >= MLX5_MAX_FLOW_FWD_VPORTS) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"can't support more output ports, can't offload forwarding");
|
netdev_warn(priv->netdev,
|
"can't support more than %d output ports, can't offload forwarding\n",
|
esw_attr->out_count);
|
return -EOPNOTSUPP;
|
}
|
|
action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
|
MLX5_FLOW_CONTEXT_ACTION_COUNT;
|
if (encap) {
|
parse_attr->mirred_ifindex[esw_attr->out_count] =
|
out_dev->ifindex;
|
parse_attr->tun_info[esw_attr->out_count] = dup_tun_info(info);
|
if (!parse_attr->tun_info[esw_attr->out_count])
|
return -ENOMEM;
|
encap = false;
|
esw_attr->dests[esw_attr->out_count].flags |=
|
MLX5_ESW_DEST_ENCAP;
|
esw_attr->out_count++;
|
/* attr->dests[].rep is resolved when we
|
* handle encap
|
*/
|
} else if (netdev_port_same_parent_id(priv->netdev, out_dev)) {
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
struct net_device *uplink_dev = mlx5_eswitch_uplink_get_proto_dev(esw, REP_ETH);
|
|
if (is_duplicated_output_device(priv->netdev,
|
out_dev,
|
ifindexes,
|
if_count,
|
extack))
|
return -EOPNOTSUPP;
|
|
ifindexes[if_count] = out_dev->ifindex;
|
if_count++;
|
|
out_dev = get_fdb_out_dev(uplink_dev, out_dev);
|
if (!out_dev)
|
return -ENODEV;
|
|
if (is_vlan_dev(out_dev)) {
|
err = add_vlan_push_action(priv, attr,
|
&out_dev,
|
&action);
|
if (err)
|
return err;
|
}
|
|
if (is_vlan_dev(parse_attr->filter_dev)) {
|
err = add_vlan_pop_action(priv, attr,
|
&action);
|
if (err)
|
return err;
|
}
|
|
err = verify_uplink_forwarding(priv, flow, out_dev, extack);
|
if (err)
|
return err;
|
|
if (!mlx5e_is_valid_eswitch_fwd_dev(priv, out_dev)) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"devices are not on same switch HW, can't offload forwarding");
|
return -EOPNOTSUPP;
|
}
|
|
out_priv = netdev_priv(out_dev);
|
rpriv = out_priv->ppriv;
|
esw_attr->dests[esw_attr->out_count].rep = rpriv->rep;
|
esw_attr->dests[esw_attr->out_count].mdev = out_priv->mdev;
|
esw_attr->out_count++;
|
} else if (parse_attr->filter_dev != priv->netdev) {
|
/* All mlx5 devices are called to configure
|
* high level device filters. Therefore, the
|
* *attempt* to install a filter on invalid
|
* eswitch should not trigger an explicit error
|
*/
|
return -EINVAL;
|
} else {
|
NL_SET_ERR_MSG_MOD(extack,
|
"devices are not on same switch HW, can't offload forwarding");
|
netdev_warn(priv->netdev,
|
"devices %s %s not on same switch HW, can't offload forwarding\n",
|
priv->netdev->name,
|
out_dev->name);
|
return -EINVAL;
|
}
|
}
|
break;
|
case FLOW_ACTION_TUNNEL_ENCAP:
|
info = act->tunnel;
|
if (info)
|
encap = true;
|
else
|
return -EOPNOTSUPP;
|
|
break;
|
case FLOW_ACTION_VLAN_PUSH:
|
case FLOW_ACTION_VLAN_POP:
|
if (act->id == FLOW_ACTION_VLAN_PUSH &&
|
(action & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP)) {
|
/* Replace vlan pop+push with vlan modify */
|
action &= ~MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
|
err = add_vlan_rewrite_action(priv,
|
MLX5_FLOW_NAMESPACE_FDB,
|
act, parse_attr, hdrs,
|
&action, extack);
|
} else {
|
err = parse_tc_vlan_action(priv, act, esw_attr, &action);
|
}
|
if (err)
|
return err;
|
|
esw_attr->split_count = esw_attr->out_count;
|
break;
|
case FLOW_ACTION_VLAN_MANGLE:
|
err = add_vlan_rewrite_action(priv,
|
MLX5_FLOW_NAMESPACE_FDB,
|
act, parse_attr, hdrs,
|
&action, extack);
|
if (err)
|
return err;
|
|
esw_attr->split_count = esw_attr->out_count;
|
break;
|
case FLOW_ACTION_TUNNEL_DECAP:
|
decap = true;
|
break;
|
case FLOW_ACTION_GOTO:
|
err = validate_goto_chain(priv, flow, act, action,
|
extack);
|
if (err)
|
return err;
|
|
action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
|
attr->dest_chain = act->chain_index;
|
break;
|
case FLOW_ACTION_CT:
|
err = mlx5_tc_ct_parse_action(get_ct_priv(priv), attr, act, extack);
|
if (err)
|
return err;
|
|
flow_flag_set(flow, CT);
|
break;
|
default:
|
NL_SET_ERR_MSG_MOD(extack, "The offload action is not supported");
|
return -EOPNOTSUPP;
|
}
|
}
|
|
if (MLX5_CAP_GEN(esw->dev, prio_tag_required) &&
|
action & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP) {
|
/* For prio tag mode, replace vlan pop with rewrite vlan prio
|
* tag rewrite.
|
*/
|
action &= ~MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
|
err = add_vlan_prio_tag_rewrite_action(priv, parse_attr, hdrs,
|
&action, extack);
|
if (err)
|
return err;
|
}
|
|
if (hdrs[TCA_PEDIT_KEY_EX_CMD_SET].pedits ||
|
hdrs[TCA_PEDIT_KEY_EX_CMD_ADD].pedits) {
|
err = alloc_tc_pedit_action(priv, MLX5_FLOW_NAMESPACE_FDB,
|
parse_attr, hdrs, &action, extack);
|
if (err)
|
return err;
|
/* in case all pedit actions are skipped, remove the MOD_HDR
|
* flag. we might have set split_count either by pedit or
|
* pop/push. if there is no pop/push either, reset it too.
|
*/
|
if (parse_attr->mod_hdr_acts.num_actions == 0) {
|
action &= ~MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
|
dealloc_mod_hdr_actions(&parse_attr->mod_hdr_acts);
|
if (!((action & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP) ||
|
(action & MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH)))
|
esw_attr->split_count = 0;
|
}
|
}
|
|
attr->action = action;
|
if (!actions_match_supported(priv, flow_action, parse_attr, flow, extack))
|
return -EOPNOTSUPP;
|
|
if (attr->dest_chain) {
|
if (decap) {
|
/* It can be supported if we'll create a mapping for
|
* the tunnel device only (without tunnel), and set
|
* this tunnel id with this decap flow.
|
*
|
* On restore (miss), we'll just set this saved tunnel
|
* device.
|
*/
|
|
NL_SET_ERR_MSG(extack,
|
"Decap with goto isn't supported");
|
netdev_warn(priv->netdev,
|
"Decap with goto isn't supported");
|
return -EOPNOTSUPP;
|
}
|
|
if (attr->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"Mirroring goto chain rules isn't supported");
|
return -EOPNOTSUPP;
|
}
|
attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
|
}
|
|
if (!(attr->action &
|
(MLX5_FLOW_CONTEXT_ACTION_FWD_DEST | MLX5_FLOW_CONTEXT_ACTION_DROP))) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"Rule must have at least one forward/drop action");
|
return -EOPNOTSUPP;
|
}
|
|
if (esw_attr->split_count > 0 && !mlx5_esw_has_fwd_fdb(priv->mdev)) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"current firmware doesn't support split rule for port mirroring");
|
netdev_warn_once(priv->netdev, "current firmware doesn't support split rule for port mirroring\n");
|
return -EOPNOTSUPP;
|
}
|
|
return 0;
|
}
|
|
static void get_flags(int flags, unsigned long *flow_flags)
|
{
|
unsigned long __flow_flags = 0;
|
|
if (flags & MLX5_TC_FLAG(INGRESS))
|
__flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_INGRESS);
|
if (flags & MLX5_TC_FLAG(EGRESS))
|
__flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_EGRESS);
|
|
if (flags & MLX5_TC_FLAG(ESW_OFFLOAD))
|
__flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_ESWITCH);
|
if (flags & MLX5_TC_FLAG(NIC_OFFLOAD))
|
__flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_NIC);
|
if (flags & MLX5_TC_FLAG(FT_OFFLOAD))
|
__flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_FT);
|
|
*flow_flags = __flow_flags;
|
}
|
|
static const struct rhashtable_params tc_ht_params = {
|
.head_offset = offsetof(struct mlx5e_tc_flow, node),
|
.key_offset = offsetof(struct mlx5e_tc_flow, cookie),
|
.key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie),
|
.automatic_shrinking = true,
|
};
|
|
static struct rhashtable *get_tc_ht(struct mlx5e_priv *priv,
|
unsigned long flags)
|
{
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
struct mlx5e_rep_priv *uplink_rpriv;
|
|
if (flags & MLX5_TC_FLAG(ESW_OFFLOAD)) {
|
uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
|
return &uplink_rpriv->uplink_priv.tc_ht;
|
} else /* NIC offload */
|
return &priv->fs.tc.ht;
|
}
|
|
static bool is_peer_flow_needed(struct mlx5e_tc_flow *flow)
|
{
|
struct mlx5_esw_flow_attr *esw_attr = flow->attr->esw_attr;
|
struct mlx5_flow_attr *attr = flow->attr;
|
bool is_rep_ingress = esw_attr->in_rep->vport != MLX5_VPORT_UPLINK &&
|
flow_flag_test(flow, INGRESS);
|
bool act_is_encap = !!(attr->action &
|
MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT);
|
bool esw_paired = mlx5_devcom_is_paired(esw_attr->in_mdev->priv.devcom,
|
MLX5_DEVCOM_ESW_OFFLOADS);
|
|
if (!esw_paired)
|
return false;
|
|
if ((mlx5_lag_is_sriov(esw_attr->in_mdev) ||
|
mlx5_lag_is_multipath(esw_attr->in_mdev)) &&
|
(is_rep_ingress || act_is_encap))
|
return true;
|
|
return false;
|
}
|
|
struct mlx5_flow_attr *
|
mlx5_alloc_flow_attr(enum mlx5_flow_namespace_type type)
|
{
|
u32 ex_attr_size = (type == MLX5_FLOW_NAMESPACE_FDB) ?
|
sizeof(struct mlx5_esw_flow_attr) :
|
sizeof(struct mlx5_nic_flow_attr);
|
struct mlx5_flow_attr *attr;
|
|
return kzalloc(sizeof(*attr) + ex_attr_size, GFP_KERNEL);
|
}
|
|
static int
|
mlx5e_alloc_flow(struct mlx5e_priv *priv, int attr_size,
|
struct flow_cls_offload *f, unsigned long flow_flags,
|
struct mlx5e_tc_flow_parse_attr **__parse_attr,
|
struct mlx5e_tc_flow **__flow)
|
{
|
struct mlx5e_tc_flow_parse_attr *parse_attr;
|
struct mlx5_flow_attr *attr;
|
struct mlx5e_tc_flow *flow;
|
int err = -ENOMEM;
|
int out_index;
|
|
flow = kzalloc(sizeof(*flow), GFP_KERNEL);
|
parse_attr = kvzalloc(sizeof(*parse_attr), GFP_KERNEL);
|
if (!parse_attr || !flow)
|
goto err_free;
|
|
flow->flags = flow_flags;
|
flow->cookie = f->cookie;
|
flow->priv = priv;
|
|
attr = mlx5_alloc_flow_attr(get_flow_name_space(flow));
|
if (!attr)
|
goto err_free;
|
|
flow->attr = attr;
|
|
for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++)
|
INIT_LIST_HEAD(&flow->encaps[out_index].list);
|
INIT_LIST_HEAD(&flow->hairpin);
|
INIT_LIST_HEAD(&flow->l3_to_l2_reformat);
|
refcount_set(&flow->refcnt, 1);
|
init_completion(&flow->init_done);
|
|
*__flow = flow;
|
*__parse_attr = parse_attr;
|
|
return 0;
|
|
err_free:
|
kfree(flow);
|
kvfree(parse_attr);
|
return err;
|
}
|
|
static void
|
mlx5e_flow_attr_init(struct mlx5_flow_attr *attr,
|
struct mlx5e_tc_flow_parse_attr *parse_attr,
|
struct flow_cls_offload *f)
|
{
|
attr->parse_attr = parse_attr;
|
attr->chain = f->common.chain_index;
|
attr->prio = f->common.prio;
|
}
|
|
static void
|
mlx5e_flow_esw_attr_init(struct mlx5_flow_attr *attr,
|
struct mlx5e_priv *priv,
|
struct mlx5e_tc_flow_parse_attr *parse_attr,
|
struct flow_cls_offload *f,
|
struct mlx5_eswitch_rep *in_rep,
|
struct mlx5_core_dev *in_mdev)
|
{
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
|
|
mlx5e_flow_attr_init(attr, parse_attr, f);
|
|
esw_attr->in_rep = in_rep;
|
esw_attr->in_mdev = in_mdev;
|
|
if (MLX5_CAP_ESW(esw->dev, counter_eswitch_affinity) ==
|
MLX5_COUNTER_SOURCE_ESWITCH)
|
esw_attr->counter_dev = in_mdev;
|
else
|
esw_attr->counter_dev = priv->mdev;
|
}
|
|
static struct mlx5e_tc_flow *
|
__mlx5e_add_fdb_flow(struct mlx5e_priv *priv,
|
struct flow_cls_offload *f,
|
unsigned long flow_flags,
|
struct net_device *filter_dev,
|
struct mlx5_eswitch_rep *in_rep,
|
struct mlx5_core_dev *in_mdev)
|
{
|
struct flow_rule *rule = flow_cls_offload_flow_rule(f);
|
struct netlink_ext_ack *extack = f->common.extack;
|
struct mlx5e_tc_flow_parse_attr *parse_attr;
|
struct mlx5e_tc_flow *flow;
|
int attr_size, err;
|
|
flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_ESWITCH);
|
attr_size = sizeof(struct mlx5_esw_flow_attr);
|
err = mlx5e_alloc_flow(priv, attr_size, f, flow_flags,
|
&parse_attr, &flow);
|
if (err)
|
goto out;
|
|
parse_attr->filter_dev = filter_dev;
|
mlx5e_flow_esw_attr_init(flow->attr,
|
priv, parse_attr,
|
f, in_rep, in_mdev);
|
|
err = parse_cls_flower(flow->priv, flow, &parse_attr->spec,
|
f, filter_dev);
|
if (err)
|
goto err_free;
|
|
/* actions validation depends on parsing the ct matches first */
|
err = mlx5_tc_ct_match_add(get_ct_priv(priv), &parse_attr->spec, f,
|
&flow->attr->ct_attr, extack);
|
if (err)
|
goto err_free;
|
|
err = parse_tc_fdb_actions(priv, &rule->action, flow, extack, filter_dev);
|
if (err)
|
goto err_free;
|
|
err = mlx5e_tc_add_fdb_flow(priv, flow, extack);
|
complete_all(&flow->init_done);
|
if (err) {
|
if (!(err == -ENETUNREACH && mlx5_lag_is_multipath(in_mdev)))
|
goto err_free;
|
|
add_unready_flow(flow);
|
}
|
|
return flow;
|
|
err_free:
|
dealloc_mod_hdr_actions(&parse_attr->mod_hdr_acts);
|
mlx5e_flow_put(priv, flow);
|
out:
|
return ERR_PTR(err);
|
}
|
|
static int mlx5e_tc_add_fdb_peer_flow(struct flow_cls_offload *f,
|
struct mlx5e_tc_flow *flow,
|
unsigned long flow_flags)
|
{
|
struct mlx5e_priv *priv = flow->priv, *peer_priv;
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch, *peer_esw;
|
struct mlx5_esw_flow_attr *attr = flow->attr->esw_attr;
|
struct mlx5_devcom *devcom = priv->mdev->priv.devcom;
|
struct mlx5e_tc_flow_parse_attr *parse_attr;
|
struct mlx5e_rep_priv *peer_urpriv;
|
struct mlx5e_tc_flow *peer_flow;
|
struct mlx5_core_dev *in_mdev;
|
int err = 0;
|
|
peer_esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
|
if (!peer_esw)
|
return -ENODEV;
|
|
peer_urpriv = mlx5_eswitch_get_uplink_priv(peer_esw, REP_ETH);
|
peer_priv = netdev_priv(peer_urpriv->netdev);
|
|
/* in_mdev is assigned of which the packet originated from.
|
* So packets redirected to uplink use the same mdev of the
|
* original flow and packets redirected from uplink use the
|
* peer mdev.
|
*/
|
if (attr->in_rep->vport == MLX5_VPORT_UPLINK)
|
in_mdev = peer_priv->mdev;
|
else
|
in_mdev = priv->mdev;
|
|
parse_attr = flow->attr->parse_attr;
|
peer_flow = __mlx5e_add_fdb_flow(peer_priv, f, flow_flags,
|
parse_attr->filter_dev,
|
attr->in_rep, in_mdev);
|
if (IS_ERR(peer_flow)) {
|
err = PTR_ERR(peer_flow);
|
goto out;
|
}
|
|
flow->peer_flow = peer_flow;
|
flow_flag_set(flow, DUP);
|
mutex_lock(&esw->offloads.peer_mutex);
|
list_add_tail(&flow->peer, &esw->offloads.peer_flows);
|
mutex_unlock(&esw->offloads.peer_mutex);
|
|
out:
|
mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
|
return err;
|
}
|
|
static int
|
mlx5e_add_fdb_flow(struct mlx5e_priv *priv,
|
struct flow_cls_offload *f,
|
unsigned long flow_flags,
|
struct net_device *filter_dev,
|
struct mlx5e_tc_flow **__flow)
|
{
|
struct mlx5e_rep_priv *rpriv = priv->ppriv;
|
struct mlx5_eswitch_rep *in_rep = rpriv->rep;
|
struct mlx5_core_dev *in_mdev = priv->mdev;
|
struct mlx5e_tc_flow *flow;
|
int err;
|
|
flow = __mlx5e_add_fdb_flow(priv, f, flow_flags, filter_dev, in_rep,
|
in_mdev);
|
if (IS_ERR(flow))
|
return PTR_ERR(flow);
|
|
if (is_peer_flow_needed(flow)) {
|
err = mlx5e_tc_add_fdb_peer_flow(f, flow, flow_flags);
|
if (err) {
|
mlx5e_tc_del_fdb_flow(priv, flow);
|
goto out;
|
}
|
}
|
|
*__flow = flow;
|
|
return 0;
|
|
out:
|
return err;
|
}
|
|
static int
|
mlx5e_add_nic_flow(struct mlx5e_priv *priv,
|
struct flow_cls_offload *f,
|
unsigned long flow_flags,
|
struct net_device *filter_dev,
|
struct mlx5e_tc_flow **__flow)
|
{
|
struct flow_rule *rule = flow_cls_offload_flow_rule(f);
|
struct netlink_ext_ack *extack = f->common.extack;
|
struct mlx5e_tc_flow_parse_attr *parse_attr;
|
struct mlx5e_tc_flow *flow;
|
int attr_size, err;
|
|
if (!MLX5_CAP_FLOWTABLE_NIC_RX(priv->mdev, ignore_flow_level)) {
|
if (!tc_cls_can_offload_and_chain0(priv->netdev, &f->common))
|
return -EOPNOTSUPP;
|
} else if (!tc_can_offload_extack(priv->netdev, f->common.extack)) {
|
return -EOPNOTSUPP;
|
}
|
|
flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_NIC);
|
attr_size = sizeof(struct mlx5_nic_flow_attr);
|
err = mlx5e_alloc_flow(priv, attr_size, f, flow_flags,
|
&parse_attr, &flow);
|
if (err)
|
goto out;
|
|
parse_attr->filter_dev = filter_dev;
|
mlx5e_flow_attr_init(flow->attr, parse_attr, f);
|
|
err = parse_cls_flower(flow->priv, flow, &parse_attr->spec,
|
f, filter_dev);
|
if (err)
|
goto err_free;
|
|
err = mlx5_tc_ct_match_add(get_ct_priv(priv), &parse_attr->spec, f,
|
&flow->attr->ct_attr, extack);
|
if (err)
|
goto err_free;
|
|
err = parse_tc_nic_actions(priv, &rule->action, parse_attr, flow, extack);
|
if (err)
|
goto err_free;
|
|
err = mlx5e_tc_add_nic_flow(priv, parse_attr, flow, extack);
|
if (err)
|
goto err_free;
|
|
flow_flag_set(flow, OFFLOADED);
|
*__flow = flow;
|
|
return 0;
|
|
err_free:
|
dealloc_mod_hdr_actions(&parse_attr->mod_hdr_acts);
|
mlx5e_flow_put(priv, flow);
|
out:
|
return err;
|
}
|
|
static int
|
mlx5e_tc_add_flow(struct mlx5e_priv *priv,
|
struct flow_cls_offload *f,
|
unsigned long flags,
|
struct net_device *filter_dev,
|
struct mlx5e_tc_flow **flow)
|
{
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
unsigned long flow_flags;
|
int err;
|
|
get_flags(flags, &flow_flags);
|
|
if (!tc_can_offload_extack(priv->netdev, f->common.extack))
|
return -EOPNOTSUPP;
|
|
if (esw && esw->mode == MLX5_ESWITCH_OFFLOADS)
|
err = mlx5e_add_fdb_flow(priv, f, flow_flags,
|
filter_dev, flow);
|
else
|
err = mlx5e_add_nic_flow(priv, f, flow_flags,
|
filter_dev, flow);
|
|
return err;
|
}
|
|
static bool is_flow_rule_duplicate_allowed(struct net_device *dev,
|
struct mlx5e_rep_priv *rpriv)
|
{
|
/* Offloaded flow rule is allowed to duplicate on non-uplink representor
|
* sharing tc block with other slaves of a lag device. Rpriv can be NULL if this
|
* function is called from NIC mode.
|
*/
|
return netif_is_lag_port(dev) && rpriv && rpriv->rep->vport != MLX5_VPORT_UPLINK;
|
}
|
|
int mlx5e_configure_flower(struct net_device *dev, struct mlx5e_priv *priv,
|
struct flow_cls_offload *f, unsigned long flags)
|
{
|
struct netlink_ext_ack *extack = f->common.extack;
|
struct rhashtable *tc_ht = get_tc_ht(priv, flags);
|
struct mlx5e_rep_priv *rpriv = priv->ppriv;
|
struct mlx5e_tc_flow *flow;
|
int err = 0;
|
|
rcu_read_lock();
|
flow = rhashtable_lookup(tc_ht, &f->cookie, tc_ht_params);
|
if (flow) {
|
/* Same flow rule offloaded to non-uplink representor sharing tc block,
|
* just return 0.
|
*/
|
if (is_flow_rule_duplicate_allowed(dev, rpriv) && flow->orig_dev != dev)
|
goto rcu_unlock;
|
|
NL_SET_ERR_MSG_MOD(extack,
|
"flow cookie already exists, ignoring");
|
netdev_warn_once(priv->netdev,
|
"flow cookie %lx already exists, ignoring\n",
|
f->cookie);
|
err = -EEXIST;
|
goto rcu_unlock;
|
}
|
rcu_unlock:
|
rcu_read_unlock();
|
if (flow)
|
goto out;
|
|
trace_mlx5e_configure_flower(f);
|
err = mlx5e_tc_add_flow(priv, f, flags, dev, &flow);
|
if (err)
|
goto out;
|
|
/* Flow rule offloaded to non-uplink representor sharing tc block,
|
* set the flow's owner dev.
|
*/
|
if (is_flow_rule_duplicate_allowed(dev, rpriv))
|
flow->orig_dev = dev;
|
|
err = rhashtable_lookup_insert_fast(tc_ht, &flow->node, tc_ht_params);
|
if (err)
|
goto err_free;
|
|
return 0;
|
|
err_free:
|
mlx5e_flow_put(priv, flow);
|
out:
|
return err;
|
}
|
|
static bool same_flow_direction(struct mlx5e_tc_flow *flow, int flags)
|
{
|
bool dir_ingress = !!(flags & MLX5_TC_FLAG(INGRESS));
|
bool dir_egress = !!(flags & MLX5_TC_FLAG(EGRESS));
|
|
return flow_flag_test(flow, INGRESS) == dir_ingress &&
|
flow_flag_test(flow, EGRESS) == dir_egress;
|
}
|
|
int mlx5e_delete_flower(struct net_device *dev, struct mlx5e_priv *priv,
|
struct flow_cls_offload *f, unsigned long flags)
|
{
|
struct rhashtable *tc_ht = get_tc_ht(priv, flags);
|
struct mlx5e_tc_flow *flow;
|
int err;
|
|
rcu_read_lock();
|
flow = rhashtable_lookup(tc_ht, &f->cookie, tc_ht_params);
|
if (!flow || !same_flow_direction(flow, flags)) {
|
err = -EINVAL;
|
goto errout;
|
}
|
|
/* Only delete the flow if it doesn't have MLX5E_TC_FLOW_DELETED flag
|
* set.
|
*/
|
if (flow_flag_test_and_set(flow, DELETED)) {
|
err = -EINVAL;
|
goto errout;
|
}
|
rhashtable_remove_fast(tc_ht, &flow->node, tc_ht_params);
|
rcu_read_unlock();
|
|
trace_mlx5e_delete_flower(f);
|
mlx5e_flow_put(priv, flow);
|
|
return 0;
|
|
errout:
|
rcu_read_unlock();
|
return err;
|
}
|
|
int mlx5e_stats_flower(struct net_device *dev, struct mlx5e_priv *priv,
|
struct flow_cls_offload *f, unsigned long flags)
|
{
|
struct mlx5_devcom *devcom = priv->mdev->priv.devcom;
|
struct rhashtable *tc_ht = get_tc_ht(priv, flags);
|
struct mlx5_eswitch *peer_esw;
|
struct mlx5e_tc_flow *flow;
|
struct mlx5_fc *counter;
|
u64 lastuse = 0;
|
u64 packets = 0;
|
u64 bytes = 0;
|
int err = 0;
|
|
rcu_read_lock();
|
flow = mlx5e_flow_get(rhashtable_lookup(tc_ht, &f->cookie,
|
tc_ht_params));
|
rcu_read_unlock();
|
if (IS_ERR(flow))
|
return PTR_ERR(flow);
|
|
if (!same_flow_direction(flow, flags)) {
|
err = -EINVAL;
|
goto errout;
|
}
|
|
if (mlx5e_is_offloaded_flow(flow) || flow_flag_test(flow, CT)) {
|
counter = mlx5e_tc_get_counter(flow);
|
if (!counter)
|
goto errout;
|
|
mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
|
}
|
|
/* Under multipath it's possible for one rule to be currently
|
* un-offloaded while the other rule is offloaded.
|
*/
|
peer_esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
|
if (!peer_esw)
|
goto out;
|
|
if (flow_flag_test(flow, DUP) &&
|
flow_flag_test(flow->peer_flow, OFFLOADED)) {
|
u64 bytes2;
|
u64 packets2;
|
u64 lastuse2;
|
|
counter = mlx5e_tc_get_counter(flow->peer_flow);
|
if (!counter)
|
goto no_peer_counter;
|
mlx5_fc_query_cached(counter, &bytes2, &packets2, &lastuse2);
|
|
bytes += bytes2;
|
packets += packets2;
|
lastuse = max_t(u64, lastuse, lastuse2);
|
}
|
|
no_peer_counter:
|
mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
|
out:
|
flow_stats_update(&f->stats, bytes, packets, 0, lastuse,
|
FLOW_ACTION_HW_STATS_DELAYED);
|
trace_mlx5e_stats_flower(f);
|
errout:
|
mlx5e_flow_put(priv, flow);
|
return err;
|
}
|
|
static int apply_police_params(struct mlx5e_priv *priv, u64 rate,
|
struct netlink_ext_ack *extack)
|
{
|
struct mlx5e_rep_priv *rpriv = priv->ppriv;
|
struct mlx5_eswitch *esw;
|
u32 rate_mbps = 0;
|
u16 vport_num;
|
int err;
|
|
vport_num = rpriv->rep->vport;
|
if (vport_num >= MLX5_VPORT_ECPF) {
|
NL_SET_ERR_MSG_MOD(extack,
|
"Ingress rate limit is supported only for Eswitch ports connected to VFs");
|
return -EOPNOTSUPP;
|
}
|
|
esw = priv->mdev->priv.eswitch;
|
/* rate is given in bytes/sec.
|
* First convert to bits/sec and then round to the nearest mbit/secs.
|
* mbit means million bits.
|
* Moreover, if rate is non zero we choose to configure to a minimum of
|
* 1 mbit/sec.
|
*/
|
if (rate) {
|
rate = (rate * BITS_PER_BYTE) + 500000;
|
rate_mbps = max_t(u32, do_div(rate, 1000000), 1);
|
}
|
|
err = mlx5_esw_modify_vport_rate(esw, vport_num, rate_mbps);
|
if (err)
|
NL_SET_ERR_MSG_MOD(extack, "failed applying action to hardware");
|
|
return err;
|
}
|
|
static int scan_tc_matchall_fdb_actions(struct mlx5e_priv *priv,
|
struct flow_action *flow_action,
|
struct netlink_ext_ack *extack)
|
{
|
struct mlx5e_rep_priv *rpriv = priv->ppriv;
|
const struct flow_action_entry *act;
|
int err;
|
int i;
|
|
if (!flow_action_has_entries(flow_action)) {
|
NL_SET_ERR_MSG_MOD(extack, "matchall called with no action");
|
return -EINVAL;
|
}
|
|
if (!flow_offload_has_one_action(flow_action)) {
|
NL_SET_ERR_MSG_MOD(extack, "matchall policing support only a single action");
|
return -EOPNOTSUPP;
|
}
|
|
if (!flow_action_basic_hw_stats_check(flow_action, extack))
|
return -EOPNOTSUPP;
|
|
flow_action_for_each(i, act, flow_action) {
|
switch (act->id) {
|
case FLOW_ACTION_POLICE:
|
err = apply_police_params(priv, act->police.rate_bytes_ps, extack);
|
if (err)
|
return err;
|
|
rpriv->prev_vf_vport_stats = priv->stats.vf_vport;
|
break;
|
default:
|
NL_SET_ERR_MSG_MOD(extack, "mlx5 supports only police action for matchall");
|
return -EOPNOTSUPP;
|
}
|
}
|
|
return 0;
|
}
|
|
int mlx5e_tc_configure_matchall(struct mlx5e_priv *priv,
|
struct tc_cls_matchall_offload *ma)
|
{
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
struct netlink_ext_ack *extack = ma->common.extack;
|
|
if (!mlx5_esw_qos_enabled(esw)) {
|
NL_SET_ERR_MSG_MOD(extack, "QoS is not supported on this device");
|
return -EOPNOTSUPP;
|
}
|
|
if (ma->common.prio != 1) {
|
NL_SET_ERR_MSG_MOD(extack, "only priority 1 is supported");
|
return -EINVAL;
|
}
|
|
return scan_tc_matchall_fdb_actions(priv, &ma->rule->action, extack);
|
}
|
|
int mlx5e_tc_delete_matchall(struct mlx5e_priv *priv,
|
struct tc_cls_matchall_offload *ma)
|
{
|
struct netlink_ext_ack *extack = ma->common.extack;
|
|
return apply_police_params(priv, 0, extack);
|
}
|
|
void mlx5e_tc_stats_matchall(struct mlx5e_priv *priv,
|
struct tc_cls_matchall_offload *ma)
|
{
|
struct mlx5e_rep_priv *rpriv = priv->ppriv;
|
struct rtnl_link_stats64 cur_stats;
|
u64 dbytes;
|
u64 dpkts;
|
|
cur_stats = priv->stats.vf_vport;
|
dpkts = cur_stats.rx_packets - rpriv->prev_vf_vport_stats.rx_packets;
|
dbytes = cur_stats.rx_bytes - rpriv->prev_vf_vport_stats.rx_bytes;
|
rpriv->prev_vf_vport_stats = cur_stats;
|
flow_stats_update(&ma->stats, dbytes, dpkts, 0, jiffies,
|
FLOW_ACTION_HW_STATS_DELAYED);
|
}
|
|
static void mlx5e_tc_hairpin_update_dead_peer(struct mlx5e_priv *priv,
|
struct mlx5e_priv *peer_priv)
|
{
|
struct mlx5_core_dev *peer_mdev = peer_priv->mdev;
|
struct mlx5e_hairpin_entry *hpe, *tmp;
|
LIST_HEAD(init_wait_list);
|
u16 peer_vhca_id;
|
int bkt;
|
|
if (!same_hw_devs(priv, peer_priv))
|
return;
|
|
peer_vhca_id = MLX5_CAP_GEN(peer_mdev, vhca_id);
|
|
mutex_lock(&priv->fs.tc.hairpin_tbl_lock);
|
hash_for_each(priv->fs.tc.hairpin_tbl, bkt, hpe, hairpin_hlist)
|
if (refcount_inc_not_zero(&hpe->refcnt))
|
list_add(&hpe->dead_peer_wait_list, &init_wait_list);
|
mutex_unlock(&priv->fs.tc.hairpin_tbl_lock);
|
|
list_for_each_entry_safe(hpe, tmp, &init_wait_list, dead_peer_wait_list) {
|
wait_for_completion(&hpe->res_ready);
|
if (!IS_ERR_OR_NULL(hpe->hp) && hpe->peer_vhca_id == peer_vhca_id)
|
mlx5_core_hairpin_clear_dead_peer(hpe->hp->pair);
|
|
mlx5e_hairpin_put(priv, hpe);
|
}
|
}
|
|
static int mlx5e_tc_netdev_event(struct notifier_block *this,
|
unsigned long event, void *ptr)
|
{
|
struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
|
struct mlx5e_flow_steering *fs;
|
struct mlx5e_priv *peer_priv;
|
struct mlx5e_tc_table *tc;
|
struct mlx5e_priv *priv;
|
|
if (ndev->netdev_ops != &mlx5e_netdev_ops ||
|
event != NETDEV_UNREGISTER ||
|
ndev->reg_state == NETREG_REGISTERED)
|
return NOTIFY_DONE;
|
|
tc = container_of(this, struct mlx5e_tc_table, netdevice_nb);
|
fs = container_of(tc, struct mlx5e_flow_steering, tc);
|
priv = container_of(fs, struct mlx5e_priv, fs);
|
peer_priv = netdev_priv(ndev);
|
if (priv == peer_priv ||
|
!(priv->netdev->features & NETIF_F_HW_TC))
|
return NOTIFY_DONE;
|
|
mlx5e_tc_hairpin_update_dead_peer(priv, peer_priv);
|
|
return NOTIFY_DONE;
|
}
|
|
static int mlx5e_tc_nic_get_ft_size(struct mlx5_core_dev *dev)
|
{
|
int tc_grp_size, tc_tbl_size;
|
u32 max_flow_counter;
|
|
max_flow_counter = (MLX5_CAP_GEN(dev, max_flow_counter_31_16) << 16) |
|
MLX5_CAP_GEN(dev, max_flow_counter_15_0);
|
|
tc_grp_size = min_t(int, max_flow_counter, MLX5E_TC_TABLE_MAX_GROUP_SIZE);
|
|
tc_tbl_size = min_t(int, tc_grp_size * MLX5E_TC_TABLE_NUM_GROUPS,
|
BIT(MLX5_CAP_FLOWTABLE_NIC_RX(dev, log_max_ft_size)));
|
|
return tc_tbl_size;
|
}
|
|
int mlx5e_tc_nic_init(struct mlx5e_priv *priv)
|
{
|
struct mlx5e_tc_table *tc = &priv->fs.tc;
|
struct mlx5_core_dev *dev = priv->mdev;
|
struct mlx5_chains_attr attr = {};
|
int err;
|
|
mlx5e_mod_hdr_tbl_init(&tc->mod_hdr);
|
mutex_init(&tc->t_lock);
|
mutex_init(&tc->hairpin_tbl_lock);
|
hash_init(tc->hairpin_tbl);
|
|
err = rhashtable_init(&tc->ht, &tc_ht_params);
|
if (err)
|
return err;
|
|
if (MLX5_CAP_FLOWTABLE_NIC_RX(priv->mdev, ignore_flow_level)) {
|
attr.flags = MLX5_CHAINS_AND_PRIOS_SUPPORTED |
|
MLX5_CHAINS_IGNORE_FLOW_LEVEL_SUPPORTED;
|
attr.max_restore_tag = MLX5E_TC_TABLE_CHAIN_TAG_MASK;
|
}
|
attr.ns = MLX5_FLOW_NAMESPACE_KERNEL;
|
attr.max_ft_sz = mlx5e_tc_nic_get_ft_size(dev);
|
attr.max_grp_num = MLX5E_TC_TABLE_NUM_GROUPS;
|
attr.default_ft = priv->fs.vlan.ft.t;
|
|
tc->chains = mlx5_chains_create(dev, &attr);
|
if (IS_ERR(tc->chains)) {
|
err = PTR_ERR(tc->chains);
|
goto err_chains;
|
}
|
|
tc->ct = mlx5_tc_ct_init(priv, tc->chains, &priv->fs.tc.mod_hdr,
|
MLX5_FLOW_NAMESPACE_KERNEL);
|
if (IS_ERR(tc->ct)) {
|
err = PTR_ERR(tc->ct);
|
goto err_ct;
|
}
|
|
tc->netdevice_nb.notifier_call = mlx5e_tc_netdev_event;
|
err = register_netdevice_notifier_dev_net(priv->netdev,
|
&tc->netdevice_nb,
|
&tc->netdevice_nn);
|
if (err) {
|
tc->netdevice_nb.notifier_call = NULL;
|
mlx5_core_warn(priv->mdev, "Failed to register netdev notifier\n");
|
goto err_reg;
|
}
|
|
return 0;
|
|
err_reg:
|
mlx5_tc_ct_clean(tc->ct);
|
err_ct:
|
mlx5_chains_destroy(tc->chains);
|
err_chains:
|
rhashtable_destroy(&tc->ht);
|
return err;
|
}
|
|
static void _mlx5e_tc_del_flow(void *ptr, void *arg)
|
{
|
struct mlx5e_tc_flow *flow = ptr;
|
struct mlx5e_priv *priv = flow->priv;
|
|
mlx5e_tc_del_flow(priv, flow);
|
kfree(flow);
|
}
|
|
void mlx5e_tc_nic_cleanup(struct mlx5e_priv *priv)
|
{
|
struct mlx5e_tc_table *tc = &priv->fs.tc;
|
|
if (tc->netdevice_nb.notifier_call)
|
unregister_netdevice_notifier_dev_net(priv->netdev,
|
&tc->netdevice_nb,
|
&tc->netdevice_nn);
|
|
mlx5e_mod_hdr_tbl_destroy(&tc->mod_hdr);
|
mutex_destroy(&tc->hairpin_tbl_lock);
|
|
rhashtable_free_and_destroy(&tc->ht, _mlx5e_tc_del_flow, NULL);
|
|
if (!IS_ERR_OR_NULL(tc->t)) {
|
mlx5_chains_put_table(tc->chains, 0, 1, MLX5E_TC_FT_LEVEL);
|
tc->t = NULL;
|
}
|
mutex_destroy(&tc->t_lock);
|
|
mlx5_tc_ct_clean(tc->ct);
|
mlx5_chains_destroy(tc->chains);
|
}
|
|
int mlx5e_tc_esw_init(struct rhashtable *tc_ht)
|
{
|
const size_t sz_enc_opts = sizeof(struct tunnel_match_enc_opts);
|
struct mlx5_rep_uplink_priv *uplink_priv;
|
struct mlx5e_rep_priv *rpriv;
|
struct mapping_ctx *mapping;
|
struct mlx5_eswitch *esw;
|
struct mlx5e_priv *priv;
|
int err = 0;
|
|
uplink_priv = container_of(tc_ht, struct mlx5_rep_uplink_priv, tc_ht);
|
rpriv = container_of(uplink_priv, struct mlx5e_rep_priv, uplink_priv);
|
priv = netdev_priv(rpriv->netdev);
|
esw = priv->mdev->priv.eswitch;
|
|
uplink_priv->ct_priv = mlx5_tc_ct_init(netdev_priv(priv->netdev),
|
esw_chains(esw),
|
&esw->offloads.mod_hdr,
|
MLX5_FLOW_NAMESPACE_FDB);
|
if (IS_ERR(uplink_priv->ct_priv))
|
goto err_ct;
|
|
mapping = mapping_create(sizeof(struct tunnel_match_key),
|
TUNNEL_INFO_BITS_MASK, true);
|
if (IS_ERR(mapping)) {
|
err = PTR_ERR(mapping);
|
goto err_tun_mapping;
|
}
|
uplink_priv->tunnel_mapping = mapping;
|
|
mapping = mapping_create(sz_enc_opts, ENC_OPTS_BITS_MASK, true);
|
if (IS_ERR(mapping)) {
|
err = PTR_ERR(mapping);
|
goto err_enc_opts_mapping;
|
}
|
uplink_priv->tunnel_enc_opts_mapping = mapping;
|
|
err = rhashtable_init(tc_ht, &tc_ht_params);
|
if (err)
|
goto err_ht_init;
|
|
return err;
|
|
err_ht_init:
|
mapping_destroy(uplink_priv->tunnel_enc_opts_mapping);
|
err_enc_opts_mapping:
|
mapping_destroy(uplink_priv->tunnel_mapping);
|
err_tun_mapping:
|
mlx5_tc_ct_clean(uplink_priv->ct_priv);
|
err_ct:
|
netdev_warn(priv->netdev,
|
"Failed to initialize tc (eswitch), err: %d", err);
|
return err;
|
}
|
|
void mlx5e_tc_esw_cleanup(struct rhashtable *tc_ht)
|
{
|
struct mlx5_rep_uplink_priv *uplink_priv;
|
|
rhashtable_free_and_destroy(tc_ht, _mlx5e_tc_del_flow, NULL);
|
|
uplink_priv = container_of(tc_ht, struct mlx5_rep_uplink_priv, tc_ht);
|
|
mapping_destroy(uplink_priv->tunnel_enc_opts_mapping);
|
mapping_destroy(uplink_priv->tunnel_mapping);
|
|
mlx5_tc_ct_clean(uplink_priv->ct_priv);
|
}
|
|
int mlx5e_tc_num_filters(struct mlx5e_priv *priv, unsigned long flags)
|
{
|
struct rhashtable *tc_ht = get_tc_ht(priv, flags);
|
|
return atomic_read(&tc_ht->nelems);
|
}
|
|
void mlx5e_tc_clean_fdb_peer_flows(struct mlx5_eswitch *esw)
|
{
|
struct mlx5e_tc_flow *flow, *tmp;
|
|
list_for_each_entry_safe(flow, tmp, &esw->offloads.peer_flows, peer)
|
__mlx5e_tc_del_fdb_peer_flow(flow);
|
}
|
|
void mlx5e_tc_reoffload_flows_work(struct work_struct *work)
|
{
|
struct mlx5_rep_uplink_priv *rpriv =
|
container_of(work, struct mlx5_rep_uplink_priv,
|
reoffload_flows_work);
|
struct mlx5e_tc_flow *flow, *tmp;
|
|
mutex_lock(&rpriv->unready_flows_lock);
|
list_for_each_entry_safe(flow, tmp, &rpriv->unready_flows, unready) {
|
if (!mlx5e_tc_add_fdb_flow(flow->priv, flow, NULL))
|
unready_flow_del(flow);
|
}
|
mutex_unlock(&rpriv->unready_flows_lock);
|
}
|
|
static int mlx5e_setup_tc_cls_flower(struct mlx5e_priv *priv,
|
struct flow_cls_offload *cls_flower,
|
unsigned long flags)
|
{
|
switch (cls_flower->command) {
|
case FLOW_CLS_REPLACE:
|
return mlx5e_configure_flower(priv->netdev, priv, cls_flower,
|
flags);
|
case FLOW_CLS_DESTROY:
|
return mlx5e_delete_flower(priv->netdev, priv, cls_flower,
|
flags);
|
case FLOW_CLS_STATS:
|
return mlx5e_stats_flower(priv->netdev, priv, cls_flower,
|
flags);
|
default:
|
return -EOPNOTSUPP;
|
}
|
}
|
|
int mlx5e_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
|
void *cb_priv)
|
{
|
unsigned long flags = MLX5_TC_FLAG(INGRESS) | MLX5_TC_FLAG(NIC_OFFLOAD);
|
struct mlx5e_priv *priv = cb_priv;
|
|
switch (type) {
|
case TC_SETUP_CLSFLOWER:
|
return mlx5e_setup_tc_cls_flower(priv, type_data, flags);
|
default:
|
return -EOPNOTSUPP;
|
}
|
}
|
|
bool mlx5e_tc_update_skb(struct mlx5_cqe64 *cqe,
|
struct sk_buff *skb)
|
{
|
#if IS_ENABLED(CONFIG_NET_TC_SKB_EXT)
|
u32 chain = 0, chain_tag, reg_b, zone_restore_id;
|
struct mlx5e_priv *priv = netdev_priv(skb->dev);
|
struct mlx5e_tc_table *tc = &priv->fs.tc;
|
struct tc_skb_ext *tc_skb_ext;
|
int err;
|
|
reg_b = be32_to_cpu(cqe->ft_metadata);
|
|
chain_tag = reg_b & MLX5E_TC_TABLE_CHAIN_TAG_MASK;
|
|
err = mlx5_get_chain_for_tag(nic_chains(priv), chain_tag, &chain);
|
if (err) {
|
netdev_dbg(priv->netdev,
|
"Couldn't find chain for chain tag: %d, err: %d\n",
|
chain_tag, err);
|
return false;
|
}
|
|
if (chain) {
|
tc_skb_ext = tc_skb_ext_alloc(skb);
|
if (WARN_ON(!tc_skb_ext))
|
return false;
|
|
tc_skb_ext->chain = chain;
|
|
zone_restore_id = (reg_b >> REG_MAPPING_SHIFT(NIC_ZONE_RESTORE_TO_REG)) &
|
ZONE_RESTORE_MAX;
|
|
if (!mlx5e_tc_ct_restore_flow(tc->ct, skb,
|
zone_restore_id))
|
return false;
|
}
|
#endif /* CONFIG_NET_TC_SKB_EXT */
|
|
return true;
|
}
|
