[linux-2.6-block.git] / drivers / net / ethernet / mellanox / mlx5 / core / fs_core.h

/*
 * 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/mlx5/fs.h>

enum fs_node_type {
	FS_TYPE_NAMESPACE,
	FS_TYPE_PRIO,
	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_ESW_EGRESS_ACL  = 0x2,
	FS_FT_ESW_INGRESS_ACL = 0x3,
	FS_FT_FDB             = 0X4,
};

enum fs_fte_status {
	FS_FTE_STATUS_EXISTING = 1UL << 0,
};

struct mlx5_flow_steering {
	struct mlx5_core_dev *dev;
	struct mlx5_flow_root_namespace *root_ns;
	struct mlx5_flow_root_namespace *fdb_root_ns;
	struct mlx5_flow_root_namespace *esw_egress_root_ns;
	struct mlx5_flow_root_namespace *esw_ingress_root_ns;
};

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 mutex		lock;
	atomic_t		refcount;
	void			(*remove_func)(struct fs_node *);
};

struct mlx5_flow_rule {
	struct fs_node				node;
	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;
};

/* Type of children is mlx5_flow_group */
struct mlx5_flow_table {
	struct fs_node			node;
	u32				id;
	u16				vport;
	unsigned int			max_fte;
	unsigned int			level;
	enum fs_flow_table_type		type;
	struct {
		bool			active;
		unsigned int		required_groups;
		unsigned int		num_groups;
	} autogroup;
	/* Protect fwd_rules */
	struct mutex			lock;
	/* FWD rules that point on this flow table */
	struct list_head		fwd_rules;
};

struct mlx5_fc_cache {
	u64 packets;
	u64 bytes;
	u64 lastuse;
};

struct mlx5_fc {
	struct list_head list;

	/* last{packets,bytes} members are used when calculating the delta since
	 * last reading
	 */
	u64 lastpackets;
	u64 lastbytes;

	u16 id;
	bool deleted;
	bool aging;

	struct mlx5_fc_cache cache ____cacheline_aligned_in_smp;
};

/* Type of children is mlx5_flow_rule */
struct fs_fte {
	struct fs_node			node;
	u32				val[MLX5_ST_SZ_DW(fte_match_param)];
	u32				dests_size;
	u32				flow_tag;
	u32				index;
	u32				action;
	enum fs_fte_status		status;
	struct mlx5_fc			*counter;
};

/* 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;
};

struct mlx5_flow_group_mask {
	u8	match_criteria_enable;
	u32	match_criteria[MLX5_ST_SZ_DW(fte_match_param)];
};

/* Type of children is fs_fte */
struct mlx5_flow_group {
	struct fs_node			node;
	struct mlx5_flow_group_mask	mask;
	u32				start_index;
	u32				max_ftes;
	u32				num_ftes;
	u32				id;
};

struct mlx5_flow_root_namespace {
	struct mlx5_flow_namespace	ns;
	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;
};

int mlx5_init_fc_stats(struct mlx5_core_dev *dev);
void mlx5_cleanup_fc_stats(struct mlx5_core_dev *dev);

int mlx5_init_fs(struct mlx5_core_dev *dev);
void mlx5_cleanup_fs(struct mlx5_core_dev *dev);

#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)

#endif
Commit	Line	Data
26a81453 MG	1	/*
	2	* Copyright (c) 2015, Mellanox Technologies. All rights reserved.
	3	*
	4	* This software is available to you under a choice of one of two
	5	* licenses. You may choose to be licensed under the terms of the GNU
	6	* General Public License (GPL) Version 2, available from the file
	7	* COPYING in the main directory of this source tree, or the
	8	* OpenIB.org BSD license below:
	9	*
	10	* Redistribution and use in source and binary forms, with or
	11	* without modification, are permitted provided that the following
	12	* conditions are met:
	13	*
	14	* - Redistributions of source code must retain the above
	15	* copyright notice, this list of conditions and the following
	16	* disclaimer.
	17	*
	18	* - Redistributions in binary form must reproduce the above
	19	* copyright notice, this list of conditions and the following
	20	* disclaimer in the documentation and/or other materials
	21	* provided with the distribution.
	22	*
	23	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	24	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	25	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	26	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	27	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	28	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	29	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	30	* SOFTWARE.
	31	*/
	32
	33	#ifndef _MLX5_FS_CORE_
	34	#define _MLX5_FS_CORE_
	35
	36	#include <linux/mlx5/fs.h>
	37
	38	enum fs_node_type {
	39	FS_TYPE_NAMESPACE,
	40	FS_TYPE_PRIO,
	41	FS_TYPE_FLOW_TABLE,
	42	FS_TYPE_FLOW_GROUP,
	43	FS_TYPE_FLOW_ENTRY,
	44	FS_TYPE_FLOW_DEST
	45	};
	46
	47	enum fs_flow_table_type {
efdc810b MHY	48	FS_FT_NIC_RX = 0x0,
	49	FS_FT_ESW_EGRESS_ACL = 0x2,
	50	FS_FT_ESW_INGRESS_ACL = 0x3,
	51	FS_FT_FDB = 0X4,
26a81453 MG	52	};
	53
	54	enum fs_fte_status {
	55	FS_FTE_STATUS_EXISTING = 1UL << 0,
	56	};
	57
fba53f7b MG	58	struct mlx5_flow_steering {
	59	struct mlx5_core_dev *dev;
	60	struct mlx5_flow_root_namespace *root_ns;
	61	struct mlx5_flow_root_namespace *fdb_root_ns;
	62	struct mlx5_flow_root_namespace *esw_egress_root_ns;
	63	struct mlx5_flow_root_namespace *esw_ingress_root_ns;
	64	};
	65
26a81453 MG	66	struct fs_node {
	67	struct list_head list;
	68	struct list_head children;
	69	enum fs_node_type type;
de8575e0 MG	70	struct fs_node *parent;
	71	struct fs_node *root;
	72	/* lock the node for writing and traversing */
	73	struct mutex lock;
	74	atomic_t refcount;
	75	void (remove_func)(struct fs_node );
26a81453 MG	76	};
	77
	78	struct mlx5_flow_rule {
	79	struct fs_node node;
	80	struct mlx5_flow_destination dest_attr;
b3638e1a MG	81	/* next_ft should be accessed under chain_lock and only of
	82	* destination type is FWD_NEXT_fT.
	83	*/
	84	struct list_head next_ft;
	85	u32 sw_action;
26a81453 MG	86	};
26a81453 MG	87
0c56b975	88	/* Type of children is mlx5_flow_group */
26a81453 MG	89	struct mlx5_flow_table {
	90	struct fs_node node;
	91	u32 id;
efdc810b	92	u16 vport;
0c56b975	93	unsigned int max_fte;
5e1626c0	94	unsigned int level;
26a81453	95	enum fs_flow_table_type type;
f0d22d18 MG	96	struct {
	97	bool active;
	98	unsigned int required_groups;
	99	unsigned int num_groups;
	100	} autogroup;
b3638e1a MG	101	/* Protect fwd_rules */
	102	struct mutex lock;
	103	/* FWD rules that point on this flow table */
	104	struct list_head fwd_rules;
26a81453 MG	105	};
26a81453 MG	106
bd5251db AV	107	struct mlx5_fc_cache {
	108	u64 packets;
	109	u64 bytes;
	110	u64 lastuse;
	111	};
	112
	113	struct mlx5_fc {
	114	struct list_head list;
	115
	116	/* last{packets,bytes} members are used when calculating the delta since
	117	* last reading
	118	*/
	119	u64 lastpackets;
	120	u64 lastbytes;
	121
	122	u16 id;
	123	bool deleted;
	124	bool aging;
	125
	126	struct mlx5_fc_cache cache ____cacheline_aligned_in_smp;
	127	};
	128
0c56b975	129	/* Type of children is mlx5_flow_rule */
26a81453 MG	130	struct fs_fte {
	131	struct fs_node node;
	132	u32 val[MLX5_ST_SZ_DW(fte_match_param)];
	133	u32 dests_size;
	134	u32 flow_tag;
	135	u32 index;
	136	u32 action;
0c56b975	137	enum fs_fte_status status;
bd5251db	138	struct mlx5_fc *counter;
26a81453 MG	139	};
26a81453 MG	140
0c56b975	141	/* Type of children is mlx5_flow_table/namespace */
5e1626c0 MG	142	struct fs_prio {
5e1626c0 MG	143	struct fs_node node;
a257b94a	144	unsigned int num_levels;
5e1626c0 MG	145	unsigned int start_level;
5e1626c0 MG	146	unsigned int prio;
0c56b975	147	unsigned int num_ft;
5e1626c0 MG	148	};
5e1626c0 MG	149
0c56b975	150	/* Type of children is fs_prio */
5e1626c0 MG	151	struct mlx5_flow_namespace {
	152	/* parent == NULL => root ns */
	153	struct fs_node node;
	154	};
	155
	156	struct mlx5_flow_group_mask {
	157	u8 match_criteria_enable;
	158	u32 match_criteria[MLX5_ST_SZ_DW(fte_match_param)];
	159	};
	160
0c56b975 MG	161	/* Type of children is fs_fte */
	162	struct mlx5_flow_group {
	163	struct fs_node node;
	164	struct mlx5_flow_group_mask mask;
	165	u32 start_index;
	166	u32 max_ftes;
	167	u32 num_ftes;
	168	u32 id;
	169	};
	170
	171	struct mlx5_flow_root_namespace {
	172	struct mlx5_flow_namespace ns;
	173	enum fs_flow_table_type table_type;
	174	struct mlx5_core_dev *dev;
2cc43b49 MG	175	struct mlx5_flow_table *root_ft;
	176	/* Should be held when chaining flow tables */
	177	struct mutex chain_lock;
0c56b975 MG	178	};
0c56b975 MG	179
43a335e0 AV	180	int mlx5_init_fc_stats(struct mlx5_core_dev *dev);
	181	void mlx5_cleanup_fc_stats(struct mlx5_core_dev *dev);
	182
25302363 MG	183	int mlx5_init_fs(struct mlx5_core_dev *dev);
	184	void mlx5_cleanup_fs(struct mlx5_core_dev *dev);
	185
5e1626c0 MG	186	#define fs_get_obj(v, _node) {v = container_of((_node), typeof(*v), node); }
	187
	188	#define fs_list_for_each_entry(pos, root) \
	189	list_for_each_entry(pos, root, node.list)
	190
153fefbf MG	191	#define fs_list_for_each_entry_safe(pos, tmp, root) \
	192	list_for_each_entry_safe(pos, tmp, root, node.list)
	193
5e1626c0 MG	194	#define fs_for_each_ns_or_ft_reverse(pos, prio) \
	195	list_for_each_entry_reverse(pos, &(prio)->node.children, list)
	196
	197	#define fs_for_each_ns_or_ft(pos, prio) \
	198	list_for_each_entry(pos, (&(prio)->node.children), list)
	199
	200	#define fs_for_each_prio(pos, ns) \
	201	fs_list_for_each_entry(pos, &(ns)->node.children)
	202
655227ed MG	203	#define fs_for_each_ns(pos, prio) \
	204	fs_list_for_each_entry(pos, &(prio)->node.children)
	205
2cc43b49 MG	206	#define fs_for_each_ft(pos, prio) \
	207	fs_list_for_each_entry(pos, &(prio)->node.children)
	208
153fefbf MG	209	#define fs_for_each_ft_safe(pos, tmp, prio) \
	210	fs_list_for_each_entry_safe(pos, tmp, &(prio)->node.children)
	211
5e1626c0 MG	212	#define fs_for_each_fg(pos, ft) \
	213	fs_list_for_each_entry(pos, &(ft)->node.children)
	214
	215	#define fs_for_each_fte(pos, fg) \
	216	fs_list_for_each_entry(pos, &(fg)->node.children)
	217
	218	#define fs_for_each_dst(pos, fte) \
	219	fs_list_for_each_entry(pos, &(fte)->node.children)
	220
26a81453	221	#endif