[deliverable/linux.git] / drivers / net / ethernet / mellanox / mlx5 / core / eswitch.h

/*
 * Copyright (c) 2015, Mellanox Technologies, Ltd.  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_ESWITCH_H__
#define __MLX5_ESWITCH_H__

#include <linux/if_ether.h>
#include <linux/if_link.h>
#include <linux/mlx5/device.h>

#define MLX5_MAX_UC_PER_VPORT(dev) \
	(1 << MLX5_CAP_GEN(dev, log_max_current_uc_list))

#define MLX5_MAX_MC_PER_VPORT(dev) \
	(1 << MLX5_CAP_GEN(dev, log_max_current_mc_list))

#define MLX5_L2_ADDR_HASH_SIZE (BIT(BITS_PER_BYTE))
#define MLX5_L2_ADDR_HASH(addr) (addr[5])

/* L2 -mac address based- hash helpers */
struct l2addr_node {
	struct hlist_node hlist;
	u8                addr[ETH_ALEN];
};

#define for_each_l2hash_node(hn, tmp, hash, i) \
	for (i = 0; i < MLX5_L2_ADDR_HASH_SIZE; i++) \
		hlist_for_each_entry_safe(hn, tmp, &hash[i], hlist)

#define l2addr_hash_find(hash, mac, type) ({                \
	int ix = MLX5_L2_ADDR_HASH(mac);                    \
	bool found = false;                                 \
	type *ptr = NULL;                                   \
							    \
	hlist_for_each_entry(ptr, &hash[ix], node.hlist)    \
		if (ether_addr_equal(ptr->node.addr, mac)) {\
			found = true;                       \
			break;                              \
		}                                           \
	if (!found)                                         \
		ptr = NULL;                                 \
	ptr;                                                \
})

#define l2addr_hash_add(hash, mac, type, gfp) ({            \
	int ix = MLX5_L2_ADDR_HASH(mac);                    \
	type *ptr = NULL;                                   \
							    \
	ptr = kzalloc(sizeof(type), gfp);                   \
	if (ptr) {                                          \
		ether_addr_copy(ptr->node.addr, mac);       \
		hlist_add_head(&ptr->node.hlist, &hash[ix]);\
	}                                                   \
	ptr;                                                \
})

#define l2addr_hash_del(ptr) ({                             \
	hlist_del(&ptr->node.hlist);                        \
	kfree(ptr);                                         \
})

struct mlx5_flow_rule {
	void             *ft;
	u32              fi;
	u8               match_criteria_enable;
	u32              *match_criteria;
	u32              *match_value;
	u32              action;
	u32              flow_tag;
	bool             valid;
	atomic_t         refcount;
	struct mutex     mutex; /* protect flow rule updates */
	struct list_head dest_list;
};

struct mlx5_vport {
	struct mlx5_core_dev    *dev;
	int                     vport;
	struct hlist_head       uc_list[MLX5_L2_ADDR_HASH_SIZE];
	struct hlist_head       mc_list[MLX5_L2_ADDR_HASH_SIZE];
	struct work_struct      vport_change_handler;

	/* This spinlock protects access to vport data, between
	 * "esw_vport_disable" and ongoing interrupt "mlx5_eswitch_vport_event"
	 * once vport marked as disabled new interrupts are discarded.
	 */
	spinlock_t              lock; /* vport events sync */
	bool                    enabled;
	u16                     enabled_events;
};

struct mlx5_l2_table {
	struct hlist_head l2_hash[MLX5_L2_ADDR_HASH_SIZE];
	u32                  size;
	unsigned long        *bitmap;
};

struct mlx5_eswitch_fdb {
	void *fdb;
};

struct mlx5_eswitch {
	struct mlx5_core_dev    *dev;
	struct mlx5_l2_table    l2_table;
	struct mlx5_eswitch_fdb fdb_table;
	struct hlist_head       mc_table[MLX5_L2_ADDR_HASH_SIZE];
	struct workqueue_struct *work_queue;
	struct mlx5_vport       *vports;
	int                     total_vports;
	int                     enabled_vports;
};

/* E-Switch API */
int mlx5_eswitch_init(struct mlx5_core_dev *dev);
void mlx5_eswitch_cleanup(struct mlx5_eswitch *esw);
void mlx5_eswitch_vport_event(struct mlx5_eswitch *esw, struct mlx5_eqe *eqe);
int mlx5_eswitch_enable_sriov(struct mlx5_eswitch *esw, int nvfs);
void mlx5_eswitch_disable_sriov(struct mlx5_eswitch *esw);
int mlx5_eswitch_set_vport_mac(struct mlx5_eswitch *esw,
			       int vport, u8 mac[ETH_ALEN]);
int mlx5_eswitch_set_vport_state(struct mlx5_eswitch *esw,
				 int vport, int link_state);
int mlx5_eswitch_set_vport_vlan(struct mlx5_eswitch *esw,
				int vport, u16 vlan, u8 qos);
int mlx5_eswitch_get_vport_config(struct mlx5_eswitch *esw,
				  int vport, struct ifla_vf_info *ivi);

#endif /* __MLX5_ESWITCH_H__ */
Commit	Line	Data
073bb189 SM	1	/*
	2	* Copyright (c) 2015, Mellanox Technologies, Ltd. 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_ESWITCH_H__
	34	#define __MLX5_ESWITCH_H__
	35
77256579 SM	36	#include <linux/if_ether.h>
77256579 SM	37	#include <linux/if_link.h>
073bb189 SM	38	#include <linux/mlx5/device.h>
	39
	40	#define MLX5_MAX_UC_PER_VPORT(dev) \
	41	(1 << MLX5_CAP_GEN(dev, log_max_current_uc_list))
	42
	43	#define MLX5_MAX_MC_PER_VPORT(dev) \
	44	(1 << MLX5_CAP_GEN(dev, log_max_current_mc_list))
	45
	46	#define MLX5_L2_ADDR_HASH_SIZE (BIT(BITS_PER_BYTE))
	47	#define MLX5_L2_ADDR_HASH(addr) (addr[5])
	48
	49	/* L2 -mac address based- hash helpers */
	50	struct l2addr_node {
	51	struct hlist_node hlist;
	52	u8 addr[ETH_ALEN];
	53	};
	54
	55	#define for_each_l2hash_node(hn, tmp, hash, i) \
	56	for (i = 0; i < MLX5_L2_ADDR_HASH_SIZE; i++) \
	57	hlist_for_each_entry_safe(hn, tmp, &hash[i], hlist)
	58
	59	#define l2addr_hash_find(hash, mac, type) ({ \
	60	int ix = MLX5_L2_ADDR_HASH(mac); \
	61	bool found = false; \
	62	type *ptr = NULL; \
	63	\
	64	hlist_for_each_entry(ptr, &hash[ix], node.hlist) \
	65	if (ether_addr_equal(ptr->node.addr, mac)) {\
	66	found = true; \
	67	break; \
	68	} \
	69	if (!found) \
	70	ptr = NULL; \
	71	ptr; \
	72	})
	73
	74	#define l2addr_hash_add(hash, mac, type, gfp) ({ \
	75	int ix = MLX5_L2_ADDR_HASH(mac); \
	76	type *ptr = NULL; \
	77	\
	78	ptr = kzalloc(sizeof(type), gfp); \
	79	if (ptr) { \
	80	ether_addr_copy(ptr->node.addr, mac); \
	81	hlist_add_head(&ptr->node.hlist, &hash[ix]);\
	82	} \
	83	ptr; \
	84	})
	85
	86	#define l2addr_hash_del(ptr) ({ \
	87	hlist_del(&ptr->node.hlist); \
	88	kfree(ptr); \
	89	})
	90
81848731 SM	91	struct mlx5_flow_rule {
	92	void *ft;
	93	u32 fi;
	94	u8 match_criteria_enable;
	95	u32 *match_criteria;
	96	u32 *match_value;
	97	u32 action;
	98	u32 flow_tag;
	99	bool valid;
	100	atomic_t refcount;
	101	struct mutex mutex; /* protect flow rule updates */
	102	struct list_head dest_list;
	103	};
	104
073bb189 SM	105	struct mlx5_vport {
	106	struct mlx5_core_dev *dev;
	107	int vport;
	108	struct hlist_head uc_list[MLX5_L2_ADDR_HASH_SIZE];
81848731	109	struct hlist_head mc_list[MLX5_L2_ADDR_HASH_SIZE];
073bb189 SM	110	struct work_struct vport_change_handler;
	111
	112	/* This spinlock protects access to vport data, between
	113	* "esw_vport_disable" and ongoing interrupt "mlx5_eswitch_vport_event"
	114	* once vport marked as disabled new interrupts are discarded.
	115	*/
	116	spinlock_t lock; /* vport events sync */
	117	bool enabled;
81848731	118	u16 enabled_events;
073bb189 SM	119	};
	120
	121	struct mlx5_l2_table {
	122	struct hlist_head l2_hash[MLX5_L2_ADDR_HASH_SIZE];
	123	u32 size;
	124	unsigned long *bitmap;
	125	};
	126
81848731 SM	127	struct mlx5_eswitch_fdb {
	128	void *fdb;
	129	};
	130
073bb189 SM	131	struct mlx5_eswitch {
	132	struct mlx5_core_dev *dev;
	133	struct mlx5_l2_table l2_table;
81848731 SM	134	struct mlx5_eswitch_fdb fdb_table;
81848731 SM	135	struct hlist_head mc_table[MLX5_L2_ADDR_HASH_SIZE];
073bb189 SM	136	struct workqueue_struct *work_queue;
	137	struct mlx5_vport *vports;
	138	int total_vports;
81848731	139	int enabled_vports;
073bb189 SM	140	};
	141
	142	/* E-Switch API */
	143	int mlx5_eswitch_init(struct mlx5_core_dev *dev);
	144	void mlx5_eswitch_cleanup(struct mlx5_eswitch *esw);
	145	void mlx5_eswitch_vport_event(struct mlx5_eswitch esw, struct mlx5_eqe eqe);
81848731 SM	146	int mlx5_eswitch_enable_sriov(struct mlx5_eswitch *esw, int nvfs);
81848731 SM	147	void mlx5_eswitch_disable_sriov(struct mlx5_eswitch *esw);
77256579 SM	148	int mlx5_eswitch_set_vport_mac(struct mlx5_eswitch *esw,
	149	int vport, u8 mac[ETH_ALEN]);
	150	int mlx5_eswitch_set_vport_state(struct mlx5_eswitch *esw,
	151	int vport, int link_state);
9e7ea352 SM	152	int mlx5_eswitch_set_vport_vlan(struct mlx5_eswitch *esw,
9e7ea352 SM	153	int vport, u16 vlan, u8 qos);
77256579 SM	154	int mlx5_eswitch_get_vport_config(struct mlx5_eswitch *esw,
77256579 SM	155	int vport, struct ifla_vf_info *ivi);
073bb189 SM	156
073bb189 SM	157	#endif /* __MLX5_ESWITCH_H__ */