111 lines
3.1 KiB
C
111 lines
3.1 KiB
C
/*
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* This file is part of the Chelsio T4 Ethernet driver for Linux.
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*
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* Copyright (c) 2016 Chelsio Communications, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef __CXGB4_SCHED_H
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#define __CXGB4_SCHED_H
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#include <linux/spinlock.h>
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#include <linux/atomic.h>
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#define SCHED_CLS_NONE 0xff
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#define FW_SCHED_CLS_NONE 0xffffffff
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/* Max rate that can be set to a scheduling class is 100 Gbps */
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#define SCHED_MAX_RATE_KBPS 100000000U
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enum {
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SCHED_STATE_ACTIVE,
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SCHED_STATE_UNUSED,
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};
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enum sched_fw_ops {
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SCHED_FW_OP_ADD,
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};
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enum sched_bind_type {
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SCHED_QUEUE,
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};
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struct sched_queue_entry {
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struct list_head list;
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unsigned int cntxt_id;
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struct ch_sched_queue param;
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};
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struct sched_class {
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u8 state;
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u8 idx;
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struct ch_sched_params info;
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struct list_head queue_list;
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spinlock_t lock; /* Per class lock */
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atomic_t refcnt;
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};
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struct sched_table { /* per port scheduling table */
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u8 sched_size;
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rwlock_t rw_lock; /* Table lock */
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struct sched_class tab[0];
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};
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static inline bool can_sched(struct net_device *dev)
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{
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struct port_info *pi = netdev2pinfo(dev);
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return !pi->sched_tbl ? false : true;
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}
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static inline bool valid_class_id(struct net_device *dev, u8 class_id)
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{
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struct port_info *pi = netdev2pinfo(dev);
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if ((class_id > pi->sched_tbl->sched_size - 1) &&
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(class_id != SCHED_CLS_NONE))
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return false;
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return true;
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}
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int cxgb4_sched_class_bind(struct net_device *dev, void *arg,
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enum sched_bind_type type);
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int cxgb4_sched_class_unbind(struct net_device *dev, void *arg,
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enum sched_bind_type type);
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struct sched_class *cxgb4_sched_class_alloc(struct net_device *dev,
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struct ch_sched_params *p);
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struct sched_table *t4_init_sched(unsigned int size);
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void t4_cleanup_sched(struct adapter *adap);
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#endif /* __CXGB4_SCHED_H */
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