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/*
* Copyright (c) 2015, Mellanox Technologies. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef _MLX5_FS_CORE_
#define _MLX5_FS_CORE_
#include <linux/refcount.h>
#include <linux/mlx5/fs.h>
#include <linux/rhashtable.h>
#include <linux/llist.h>
#include <steering/fs_dr.h>
#define FDB_TC_MAX_CHAIN 3
#define FDB_FT_CHAIN (FDB_TC_MAX_CHAIN + 1)
#define FDB_TC_SLOW_PATH_CHAIN (FDB_FT_CHAIN + 1)
/* The index of the last real chain (FT) + 1 as chain zero is valid as well */
#define FDB_NUM_CHAINS (FDB_FT_CHAIN + 1)
#define FDB_TC_MAX_PRIO 16
#define FDB_TC_LEVELS_PER_PRIO 2
struct mlx5_flow_definer {
enum mlx5_flow_namespace_type ns_type;
u32 id;
};
enum mlx5_flow_resource_owner {
MLX5_FLOW_RESOURCE_OWNER_FW,
MLX5_FLOW_RESOURCE_OWNER_SW,
};
struct mlx5_modify_hdr {
enum mlx5_flow_namespace_type ns_type;
enum mlx5_flow_resource_owner owner;
union {
struct mlx5_fs_dr_action action;
u32 id;
};
};
struct mlx5_pkt_reformat {
enum mlx5_flow_namespace_type ns_type;
int reformat_type; /* from mlx5_ifc */
enum mlx5_flow_resource_owner owner;
union {
struct mlx5_fs_dr_action action;
u32 id;
};
};
/* FS_TYPE_PRIO_CHAINS is a PRIO that will have namespaces only,
* and those are in parallel to one another when going over them to connect
* a new flow table. Meaning the last flow table in a TYPE_PRIO prio in one
* parallel namespace will not automatically connect to the first flow table
* found in any prio in any next namespace, but skip the entire containing
* TYPE_PRIO_CHAINS prio.
*
* This is used to implement tc chains, each chain of prios is a different
* namespace inside a containing TYPE_PRIO_CHAINS prio.
*/
enum fs_node_type {
FS_TYPE_NAMESPACE,
FS_TYPE_PRIO,
FS_TYPE_PRIO_CHAINS,
FS_TYPE_FLOW_TABLE,
FS_TYPE_FLOW_GROUP,
FS_TYPE_FLOW_ENTRY,
FS_TYPE_FLOW_DEST
};
enum fs_flow_table_type {
FS_FT_NIC_RX = 0x0,
FS_FT_NIC_TX = 0x1,
FS_FT_ESW_EGRESS_ACL = 0x2,
FS_FT_ESW_INGRESS_ACL = 0x3,
FS_FT_FDB = 0X4,
FS_FT_SNIFFER_RX = 0X5,
FS_FT_SNIFFER_TX = 0X6,
FS_FT_RDMA_RX = 0X7,
FS_FT_RDMA_TX = 0X8,
FS_FT_PORT_SEL = 0X9,
FS_FT_MAX_TYPE = FS_FT_PORT_SEL,
};
enum fs_flow_table_op_mod {
FS_FT_OP_MOD_NORMAL,
FS_FT_OP_MOD_LAG_DEMUX,
};
enum fs_fte_status {
FS_FTE_STATUS_EXISTING = 1UL << 0,
};
enum mlx5_flow_steering_mode {
MLX5_FLOW_STEERING_MODE_DMFS,
MLX5_FLOW_STEERING_MODE_SMFS
};
enum mlx5_flow_steering_capabilty {
MLX5_FLOW_STEERING_CAP_VLAN_PUSH_ON_RX = 1UL << 0,
MLX5_FLOW_STEERING_CAP_VLAN_POP_ON_TX = 1UL << 1,
MLX5_FLOW_STEERING_CAP_MATCH_RANGES = 1UL << 2,
};
struct mlx5_flow_steering {
struct mlx5_core_dev *dev;
enum mlx5_flow_steering_mode mode;
struct kmem_cache *fgs_cache;
struct kmem_cache *ftes_cache;
struct mlx5_flow_root_namespace *root_ns;
struct mlx5_flow_root_namespace *fdb_root_ns;
struct mlx5_flow_namespace **fdb_sub_ns;
struct mlx5_flow_root_namespace **esw_egress_root_ns;
struct mlx5_flow_root_namespace **esw_ingress_root_ns;
struct mlx5_flow_root_namespace *sniffer_tx_root_ns;
struct mlx5_flow_root_namespace *sniffer_rx_root_ns;
struct mlx5_flow_root_namespace *rdma_rx_root_ns;
struct mlx5_flow_root_namespace *rdma_tx_root_ns;
struct mlx5_flow_root_namespace *egress_root_ns;
struct mlx5_flow_root_namespace *port_sel_root_ns;
int esw_egress_acl_vports;
int esw_ingress_acl_vports;
};
struct fs_node {
struct list_head list;
struct list_head children;
enum fs_node_type type;
struct fs_node *parent;
struct fs_node *root;
/* lock the node for writing and traversing */
struct rw_semaphore lock;
refcount_t refcount;
bool active;
void (*del_hw_func)(struct fs_node *);
void (*del_sw_func)(struct fs_node *);
atomic_t version;
};
struct mlx5_flow_rule {
struct fs_node node;
struct mlx5_flow_table *ft;
struct mlx5_flow_destination dest_attr;
/* next_ft should be accessed under chain_lock and only of
* destination type is FWD_NEXT_fT.
*/
struct list_head next_ft;
u32 sw_action;
};
struct mlx5_flow_handle {
int num_rules;
struct mlx5_flow_rule *rule[];
};
/* Type of children is mlx5_flow_group */
struct mlx5_flow_table {
struct fs_node node;
struct mlx5_fs_dr_table fs_dr_table;
u32 id;
u16 vport;
unsigned int max_fte;
unsigned int level;
enum fs_flow_table_type type;
enum fs_flow_table_op_mod op_mod;
struct {
bool active;
unsigned int required_groups;
unsigned int group_size;
unsigned int num_groups;
unsigned int max_fte;
} autogroup;
/* Protect fwd_rules */
struct mutex lock;
/* FWD rules that point on this flow table */
struct list_head fwd_rules;
u32 flags;
struct rhltable fgs_hash;
enum mlx5_flow_table_miss_action def_miss_action;
struct mlx5_flow_namespace *ns;
};
struct mlx5_ft_underlay_qp {
struct list_head list;
u32 qpn;
};
#define MLX5_FTE_MATCH_PARAM_RESERVED reserved_at_e00
/* Calculate the fte_match_param length and without the reserved length.
* Make sure the reserved field is the last.
*/
#define MLX5_ST_SZ_DW_MATCH_PARAM \
((MLX5_BYTE_OFF(fte_match_param, MLX5_FTE_MATCH_PARAM_RESERVED) / sizeof(u32)) + \
BUILD_BUG_ON_ZERO(MLX5_ST_SZ_BYTES(fte_match_param) != \
MLX5_FLD_SZ_BYTES(fte_match_param, \
MLX5_FTE_MATCH_PARAM_RESERVED) +\
MLX5_BYTE_OFF(fte_match_param, \
MLX5_FTE_MATCH_PARAM_RESERVED)))
/* Type of children is mlx5_flow_rule */
struct fs_fte {
struct fs_node node;
struct mlx5_fs_dr_rule fs_dr_rule;
u32 val[MLX5_ST_SZ_DW_MATCH_PARAM];
u32 dests_size;
u32 fwd_dests;
u32 index;
struct mlx5_flow_context flow_context;
struct mlx5_flow_act action;
enum fs_fte_status status;
struct mlx5_fc *counter;
struct rhash_head hash;
int modify_mask;
};
/* Type of children is mlx5_flow_table/namespace */
struct fs_prio {
struct fs_node node;
unsigned int num_levels;
unsigned int start_level;
unsigned int prio;
unsigned int num_ft;
};
/* Type of children is fs_prio */
struct mlx5_flow_namespace {
/* parent == NULL => root ns */
struct fs_node node;
enum mlx5_flow_table_miss_action def_miss_action;
};
struct mlx5_flow_group_mask {
u8 match_criteria_enable;
u32 match_criteria[MLX5_ST_SZ_DW_MATCH_PARAM];
};
/* Type of children is fs_fte */
struct mlx5_flow_group {
struct fs_node node;
struct mlx5_fs_dr_matcher fs_dr_matcher;
struct mlx5_flow_group_mask mask;
u32 start_index;
u32 max_ftes;
struct ida fte_allocator;
u32 id;
struct rhashtable ftes_hash;
struct rhlist_head hash;
};
struct mlx5_flow_root_namespace {
struct mlx5_flow_namespace ns;
enum mlx5_flow_steering_mode mode;
struct mlx5_fs_dr_domain fs_dr_domain;
enum fs_flow_table_type table_type;
struct mlx5_core_dev *dev;
struct mlx5_flow_table *root_ft;
/* Should be held when chaining flow tables */
struct mutex chain_lock;
struct list_head underlay_qpns;
const struct mlx5_flow_cmds *cmds;
};
int mlx5_init_fc_stats(struct mlx5_core_dev *dev);
void mlx5_cleanup_fc_stats(struct mlx5_core_dev *dev);
void mlx5_fc_queue_stats_work(struct mlx5_core_dev *dev,
struct delayed_work *dwork,
unsigned long delay);
void mlx5_fc_update_sampling_interval(struct mlx5_core_dev *dev,
unsigned long interval);
const struct mlx5_flow_cmds *mlx5_fs_cmd_get_fw_cmds(void);
int mlx5_flow_namespace_set_peer(struct mlx5_flow_root_namespace *ns,
struct mlx5_flow_root_namespace *peer_ns,
u16 peer_vhca_id);
int mlx5_flow_namespace_set_mode(struct mlx5_flow_namespace *ns,
enum mlx5_flow_steering_mode mode);
int mlx5_fs_core_alloc(struct mlx5_core_dev *dev);
void mlx5_fs_core_free(struct mlx5_core_dev *dev);
int mlx5_fs_core_init(struct mlx5_core_dev *dev);
void mlx5_fs_core_cleanup(struct mlx5_core_dev *dev);
int mlx5_fs_egress_acls_init(struct mlx5_core_dev *dev, int total_vports);
void mlx5_fs_egress_acls_cleanup(struct mlx5_core_dev *dev);
int mlx5_fs_ingress_acls_init(struct mlx5_core_dev *dev, int total_vports);
void mlx5_fs_ingress_acls_cleanup(struct mlx5_core_dev *dev);
u32 mlx5_fs_get_capabilities(struct mlx5_core_dev *dev, enum mlx5_flow_namespace_type type);
struct mlx5_flow_root_namespace *find_root(struct fs_node *node);
#define fs_get_obj(v, _node) {v = container_of((_node), typeof(*v), node); }
#define fs_list_for_each_entry(pos, root) \
list_for_each_entry(pos, root, node.list)
#define fs_list_for_each_entry_safe(pos, tmp, root) \
list_for_each_entry_safe(pos, tmp, root, node.list)
#define fs_for_each_ns_or_ft_reverse(pos, prio) \
list_for_each_entry_reverse(pos, &(prio)->node.children, list)
#define fs_for_each_ns_or_ft(pos, prio) \
list_for_each_entry(pos, (&(prio)->node.children), list)
#define fs_for_each_prio(pos, ns) \
fs_list_for_each_entry(pos, &(ns)->node.children)
#define fs_for_each_ns(pos, prio) \
fs_list_for_each_entry(pos, &(prio)->node.children)
#define fs_for_each_ft(pos, prio) \
fs_list_for_each_entry(pos, &(prio)->node.children)
#define fs_for_each_ft_safe(pos, tmp, prio) \
fs_list_for_each_entry_safe(pos, tmp, &(prio)->node.children)
#define fs_for_each_fg(pos, ft) \
fs_list_for_each_entry(pos, &(ft)->node.children)
#define fs_for_each_fte(pos, fg) \
fs_list_for_each_entry(pos, &(fg)->node.children)
#define fs_for_each_dst(pos, fte) \
fs_list_for_each_entry(pos, &(fte)->node.children)
#define MLX5_CAP_FLOWTABLE_TYPE(mdev, cap, type) ( \
(type == FS_FT_NIC_RX) ? MLX5_CAP_FLOWTABLE_NIC_RX(mdev, cap) : \
(type == FS_FT_NIC_TX) ? MLX5_CAP_FLOWTABLE_NIC_TX(mdev, cap) : \
(type == FS_FT_ESW_EGRESS_ACL) ? MLX5_CAP_ESW_EGRESS_ACL(mdev, cap) : \
(type == FS_FT_ESW_INGRESS_ACL) ? MLX5_CAP_ESW_INGRESS_ACL(mdev, cap) : \
(type == FS_FT_FDB) ? MLX5_CAP_ESW_FLOWTABLE_FDB(mdev, cap) : \
(type == FS_FT_SNIFFER_RX) ? MLX5_CAP_FLOWTABLE_SNIFFER_RX(mdev, cap) : \
(type == FS_FT_SNIFFER_TX) ? MLX5_CAP_FLOWTABLE_SNIFFER_TX(mdev, cap) : \
(type == FS_FT_RDMA_RX) ? MLX5_CAP_FLOWTABLE_RDMA_RX(mdev, cap) : \
(type == FS_FT_RDMA_TX) ? MLX5_CAP_FLOWTABLE_RDMA_TX(mdev, cap) : \
(type == FS_FT_PORT_SEL) ? MLX5_CAP_FLOWTABLE_PORT_SELECTION(mdev, cap) : \
(BUILD_BUG_ON_ZERO(FS_FT_PORT_SEL != FS_FT_MAX_TYPE))\
)
#endif