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/*
* This file is part of the Chelsio T4 Ethernet driver for Linux.
*
* Copyright (c) 2016 Chelsio Communications, Inc. 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 __CXGB4_SCHED_H
#define __CXGB4_SCHED_H
#include <linux/spinlock.h>
#include <linux/atomic.h>
#define SCHED_CLS_NONE 0xff
#define FW_SCHED_CLS_NONE 0xffffffff
/* Max rate that can be set to a scheduling class is 100 Gbps */
#define SCHED_MAX_RATE_KBPS 100000000U
enum {
SCHED_STATE_ACTIVE,
SCHED_STATE_UNUSED,
};
enum sched_fw_ops {
SCHED_FW_OP_ADD,
SCHED_FW_OP_DEL,
};
enum sched_bind_type {
SCHED_QUEUE,
SCHED_FLOWC,
};
struct sched_queue_entry {
struct list_head list;
unsigned int cntxt_id;
struct ch_sched_queue param;
};
struct sched_flowc_entry {
struct list_head list;
struct ch_sched_flowc param;
};
struct sched_class {
u8 state;
u8 idx;
struct ch_sched_params info;
enum sched_bind_type bind_type;
struct list_head entry_list;
atomic_t refcnt;
};
struct sched_table { /* per port scheduling table */
u8 sched_size;
struct sched_class tab[];
};
static inline bool can_sched(struct net_device *dev)
{
struct port_info *pi = netdev2pinfo(dev);
return !pi->sched_tbl ? false : true;
}
static inline bool valid_class_id(struct net_device *dev, u8 class_id)
{
struct port_info *pi = netdev2pinfo(dev);
if ((class_id > pi->sched_tbl->sched_size - 1) &&
(class_id != SCHED_CLS_NONE))
return false;
return true;
}
struct sched_class *cxgb4_sched_queue_lookup(struct net_device *dev,
struct ch_sched_queue *p);
int cxgb4_sched_class_bind(struct net_device *dev, void *arg,
enum sched_bind_type type);
int cxgb4_sched_class_unbind(struct net_device *dev, void *arg,
enum sched_bind_type type);
struct sched_class *cxgb4_sched_class_alloc(struct net_device *dev,
struct ch_sched_params *p);
void cxgb4_sched_class_free(struct net_device *dev, u8 classid);
struct sched_table *t4_init_sched(unsigned int size);
void t4_cleanup_sched(struct adapter *adap);
#endif /* __CXGB4_SCHED_H */
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