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#ifndef _OPA_VNIC_INTERNAL_H
#define _OPA_VNIC_INTERNAL_H
/*
* Copyright(c) 2017 Intel Corporation.
*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* BSD LICENSE
*
* 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.
* - Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/*
* This file contains OPA VNIC driver internal declarations
*/
#include <linux/bitops.h>
#include <linux/etherdevice.h>
#include <linux/hashtable.h>
#include <linux/sizes.h>
#include <rdma/opa_vnic.h>
#include "opa_vnic_encap.h"
#define OPA_VNIC_VLAN_PCP(vlan_tci) \
(((vlan_tci) & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT)
/* Flow to default port redirection table size */
#define OPA_VNIC_FLOW_TBL_SIZE 32
/* Invalid port number */
#define OPA_VNIC_INVALID_PORT 0xff
struct opa_vnic_adapter;
/**
* struct __opa_vesw_info - OPA vnic virtual switch info
*
* Same as opa_vesw_info without bitwise attribute.
*/
struct __opa_vesw_info {
u16 fabric_id;
u16 vesw_id;
u8 rsvd0[6];
u16 def_port_mask;
u8 rsvd1[2];
u16 pkey;
u8 rsvd2[4];
u32 u_mcast_dlid;
u32 u_ucast_dlid[OPA_VESW_MAX_NUM_DEF_PORT];
u8 rsvd3[44];
u16 eth_mtu[OPA_VNIC_MAX_NUM_PCP];
u16 eth_mtu_non_vlan;
u8 rsvd4[2];
} __packed;
/**
* struct __opa_per_veswport_info - OPA vnic per port info
*
* Same as opa_per_veswport_info without bitwise attribute.
*/
struct __opa_per_veswport_info {
u32 port_num;
u8 eth_link_status;
u8 rsvd0[3];
u8 base_mac_addr[ETH_ALEN];
u8 config_state;
u8 oper_state;
u16 max_mac_tbl_ent;
u16 max_smac_ent;
u32 mac_tbl_digest;
u8 rsvd1[4];
u32 encap_slid;
u8 pcp_to_sc_uc[OPA_VNIC_MAX_NUM_PCP];
u8 pcp_to_vl_uc[OPA_VNIC_MAX_NUM_PCP];
u8 pcp_to_sc_mc[OPA_VNIC_MAX_NUM_PCP];
u8 pcp_to_vl_mc[OPA_VNIC_MAX_NUM_PCP];
u8 non_vlan_sc_uc;
u8 non_vlan_vl_uc;
u8 non_vlan_sc_mc;
u8 non_vlan_vl_mc;
u8 rsvd2[48];
u16 uc_macs_gen_count;
u16 mc_macs_gen_count;
u8 rsvd3[8];
} __packed;
/**
* struct __opa_veswport_info - OPA vnic port info
*
* Same as opa_veswport_info without bitwise attribute.
*/
struct __opa_veswport_info {
struct __opa_vesw_info vesw;
struct __opa_per_veswport_info vport;
};
/**
* struct __opa_veswport_trap - OPA vnic trap info
*
* Same as opa_veswport_trap without bitwise attribute.
*/
struct __opa_veswport_trap {
u16 fabric_id;
u16 veswid;
u32 veswportnum;
u16 opaportnum;
u8 veswportindex;
u8 opcode;
u32 reserved;
} __packed;
/**
* struct opa_vnic_adapter - OPA VNIC netdev private data structure
* @netdev: pointer to associated netdev
* @ibdev: ib device
* @rn_ops: rdma netdev's net_device_ops
* @port_num: OPA port number
* @vport_num: vesw port number
* @lock: adapter lock
* @info: virtual ethernet switch port information
* @mactbl: hash table of MAC entries
* @mactbl_lock: mac table lock
* @stats_lock: statistics lock
* @flow_tbl: flow to default port redirection table
*/
struct opa_vnic_adapter {
struct net_device *netdev;
struct ib_device *ibdev;
const struct net_device_ops *rn_ops;
u8 port_num;
u8 vport_num;
/* Lock used around concurrent updates to netdev */
struct mutex lock;
struct __opa_veswport_info info;
struct hlist_head __rcu *mactbl;
/* Lock used to protect updates to mac table */
struct mutex mactbl_lock;
/* Lock used to protect access to vnic counters */
struct mutex stats_lock;
u8 flow_tbl[OPA_VNIC_FLOW_TBL_SIZE];
};
/* Same as opa_veswport_mactable_entry, but without bitwise attribute */
struct __opa_vnic_mactable_entry {
u8 mac_addr[ETH_ALEN];
u8 mac_addr_mask[ETH_ALEN];
u32 dlid_sd;
} __packed;
/**
* struct opa_vnic_mac_tbl_node - OPA VNIC mac table node
* @hlist: hash list handle
* @index: index of entry in the mac table
* @entry: entry in the table
*/
struct opa_vnic_mac_tbl_node {
struct hlist_node hlist;
u16 index;
struct __opa_vnic_mactable_entry entry;
};
#define v_dbg(format, arg...) \
netdev_dbg(adapter->netdev, format, ## arg)
#define v_err(format, arg...) \
netdev_err(adapter->netdev, format, ## arg)
#define v_info(format, arg...) \
netdev_info(adapter->netdev, format, ## arg)
#define v_warn(format, arg...) \
netdev_warn(adapter->netdev, format, ## arg)
/* The maximum allowed entries in the mac table */
#define OPA_VNIC_MAC_TBL_MAX_ENTRIES 2048
/* Limit of smac entries in mac table */
#define OPA_VNIC_MAX_SMAC_LIMIT 256
/* The last octet of the MAC address is used as the key to the hash table */
#define OPA_VNIC_MAC_HASH_IDX 5
/* The VNIC MAC hash table is of size 2^8 */
#define OPA_VNIC_MAC_TBL_HASH_BITS 8
#define OPA_VNIC_MAC_TBL_SIZE BIT(OPA_VNIC_MAC_TBL_HASH_BITS)
/* VNIC HASH MACROS */
#define vnic_hash_init(hashtable) __hash_init(hashtable, OPA_VNIC_MAC_TBL_SIZE)
#define vnic_hash_add(hashtable, node, key) \
hlist_add_head(node, \
&hashtable[hash_min(key, ilog2(OPA_VNIC_MAC_TBL_SIZE))])
#define vnic_hash_for_each_safe(name, bkt, tmp, obj, member) \
for ((bkt) = 0, obj = NULL; \
!obj && (bkt) < OPA_VNIC_MAC_TBL_SIZE; (bkt)++) \
hlist_for_each_entry_safe(obj, tmp, &name[bkt], member)
#define vnic_hash_for_each_possible(name, obj, member, key) \
hlist_for_each_entry(obj, \
&name[hash_min(key, ilog2(OPA_VNIC_MAC_TBL_SIZE))], member)
#define vnic_hash_for_each(name, bkt, obj, member) \
for ((bkt) = 0, obj = NULL; \
!obj && (bkt) < OPA_VNIC_MAC_TBL_SIZE; (bkt)++) \
hlist_for_each_entry(obj, &name[bkt], member)
struct opa_vnic_adapter *opa_vnic_add_netdev(struct ib_device *ibdev,
u8 port_num, u8 vport_num);
void opa_vnic_rem_netdev(struct opa_vnic_adapter *adapter);
void opa_vnic_encap_skb(struct opa_vnic_adapter *adapter, struct sk_buff *skb);
u8 opa_vnic_get_vl(struct opa_vnic_adapter *adapter, struct sk_buff *skb);
u8 opa_vnic_calc_entropy(struct opa_vnic_adapter *adapter, struct sk_buff *skb);
void opa_vnic_release_mac_tbl(struct opa_vnic_adapter *adapter);
void opa_vnic_query_mac_tbl(struct opa_vnic_adapter *adapter,
struct opa_veswport_mactable *tbl);
int opa_vnic_update_mac_tbl(struct opa_vnic_adapter *adapter,
struct opa_veswport_mactable *tbl);
void opa_vnic_set_ethtool_ops(struct net_device *netdev);
#endif /* _OPA_VNIC_INTERNAL_H */
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