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/*
* Copyright (c) 2017, 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 __MLX5E_REP_H__
#define __MLX5E_REP_H__
#include <net/ip_tunnels.h>
#include <linux/rhashtable.h>
#include "eswitch.h"
#include "en.h"
struct mlx5e_neigh_update_table {
struct rhashtable neigh_ht;
/* Save the neigh hash entries in a list in addition to the hash table
* (neigh_ht). In order to iterate easily over the neigh entries.
* Used for stats query.
*/
struct list_head neigh_list;
/* protect lookup/remove operations */
spinlock_t encap_lock;
struct notifier_block netevent_nb;
struct delayed_work neigh_stats_work;
unsigned long min_interval; /* jiffies */
};
struct mlx5e_rep_priv {
struct mlx5_eswitch_rep *rep;
struct mlx5e_neigh_update_table neigh_update;
};
struct mlx5e_neigh {
struct net_device *dev;
union {
__be32 v4;
struct in6_addr v6;
} dst_ip;
int family;
};
struct mlx5e_neigh_hash_entry {
struct rhash_head rhash_node;
struct mlx5e_neigh m_neigh;
/* Save the neigh hash entry in a list on the representor in
* addition to the hash table. In order to iterate easily over the
* neighbour entries. Used for stats query.
*/
struct list_head neigh_list;
/* encap list sharing the same neigh */
struct list_head encap_list;
/* valid only when the neigh reference is taken during
* neigh_update_work workqueue callback.
*/
struct neighbour *n;
struct work_struct neigh_update_work;
/* neigh hash entry can be deleted only when the refcount is zero.
* refcount is needed to avoid neigh hash entry removal by TC, while
* it's used by the neigh notification call.
*/
refcount_t refcnt;
/* Save the last reported time offloaded trafic pass over one of the
* neigh hash entry flows. Use it to periodically update the neigh
* 'used' value and avoid neigh deleting by the kernel.
*/
unsigned long reported_lastuse;
};
enum {
/* set when the encap entry is successfully offloaded into HW */
MLX5_ENCAP_ENTRY_VALID = BIT(0),
};
struct mlx5e_encap_entry {
/* neigh hash entry list of encaps sharing the same neigh */
struct list_head encap_list;
struct mlx5e_neigh m_neigh;
/* a node of the eswitch encap hash table which keeping all the encap
* entries
*/
struct hlist_node encap_hlist;
struct list_head flows;
u32 encap_id;
struct ip_tunnel_info tun_info;
unsigned char h_dest[ETH_ALEN]; /* destination eth addr */
struct net_device *out_dev;
int tunnel_type;
u8 flags;
char *encap_header;
int encap_size;
};
void mlx5e_register_vport_reps(struct mlx5e_priv *priv);
void mlx5e_unregister_vport_reps(struct mlx5e_priv *priv);
bool mlx5e_is_uplink_rep(struct mlx5e_priv *priv);
int mlx5e_add_sqs_fwd_rules(struct mlx5e_priv *priv);
void mlx5e_remove_sqs_fwd_rules(struct mlx5e_priv *priv);
int mlx5e_get_offload_stats(int attr_id, const struct net_device *dev, void *sp);
bool mlx5e_has_offload_stats(const struct net_device *dev, int attr_id);
int mlx5e_attr_get(struct net_device *dev, struct switchdev_attr *attr);
void mlx5e_handle_rx_cqe_rep(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe);
int mlx5e_rep_encap_entry_attach(struct mlx5e_priv *priv,
struct mlx5e_encap_entry *e);
void mlx5e_rep_encap_entry_detach(struct mlx5e_priv *priv,
struct mlx5e_encap_entry *e);
void mlx5e_rep_queue_neigh_stats_work(struct mlx5e_priv *priv);
#endif /* __MLX5E_REP_H__ */
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