111 строки
3.1 KiB
C
111 строки
3.1 KiB
C
/*
|
|
* 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,
|
|
};
|
|
|
|
enum sched_bind_type {
|
|
SCHED_QUEUE,
|
|
};
|
|
|
|
struct sched_queue_entry {
|
|
struct list_head list;
|
|
unsigned int cntxt_id;
|
|
struct ch_sched_queue param;
|
|
};
|
|
|
|
struct sched_class {
|
|
u8 state;
|
|
u8 idx;
|
|
struct ch_sched_params info;
|
|
struct list_head queue_list;
|
|
spinlock_t lock; /* Per class lock */
|
|
atomic_t refcnt;
|
|
};
|
|
|
|
struct sched_table { /* per port scheduling table */
|
|
u8 sched_size;
|
|
rwlock_t rw_lock; /* Table lock */
|
|
struct sched_class tab[0];
|
|
};
|
|
|
|
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;
|
|
}
|
|
|
|
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);
|
|
|
|
struct sched_table *t4_init_sched(unsigned int size);
|
|
void t4_cleanup_sched(struct adapter *adap);
|
|
#endif /* __CXGB4_SCHED_H */
|