/*
* 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 0 xff
#define FW_SCHED_CLS_NONE 0 xffffffff
/* Max rate that can be set to a scheduling class is 100 Gbps */
#define SCHED_MAX_RATE_KBPS 100000000 U
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[] __counted_by(sched_size);
};
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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(vorverarbeitet am 2026-10-04)
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