cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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sched.h (3389B)

      1/*
      2 * This file is part of the Chelsio T4 Ethernet driver for Linux.
      3 *
      4 * Copyright (c) 2016 Chelsio Communications, Inc. All rights reserved.
      5 *
      6 * This software is available to you under a choice of one of two
      7 * licenses.  You may choose to be licensed under the terms of the GNU
      8 * General Public License (GPL) Version 2, available from the file
      9 * COPYING in the main directory of this source tree, or the
     10 * OpenIB.org BSD license below:
     11 *
     12 *     Redistribution and use in source and binary forms, with or
     13 *     without modification, are permitted provided that the following
     14 *     conditions are met:
     15 *
     16 *      - Redistributions of source code must retain the above
     17 *        copyright notice, this list of conditions and the following
     18 *        disclaimer.
     19 *
     20 *      - Redistributions in binary form must reproduce the above
     21 *        copyright notice, this list of conditions and the following
     22 *        disclaimer in the documentation and/or other materials
     23 *        provided with the distribution.
     24 *
     25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
     29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
     30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
     31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     32 * SOFTWARE.
     33 */
     34
     35#ifndef __CXGB4_SCHED_H
     36#define __CXGB4_SCHED_H
     37
     38#include <linux/spinlock.h>
     39#include <linux/atomic.h>
     40
     41#define SCHED_CLS_NONE 0xff
     42
     43#define FW_SCHED_CLS_NONE 0xffffffff
     44
     45/* Max rate that can be set to a scheduling class is 100 Gbps */
     46#define SCHED_MAX_RATE_KBPS 100000000U
     47
     48enum {
     49	SCHED_STATE_ACTIVE,
     50	SCHED_STATE_UNUSED,
     51};
     52
     53enum sched_fw_ops {
     54	SCHED_FW_OP_ADD,
     55	SCHED_FW_OP_DEL,
     56};
     57
     58enum sched_bind_type {
     59	SCHED_QUEUE,
     60	SCHED_FLOWC,
     61};
     62
     63struct sched_queue_entry {
     64	struct list_head list;
     65	unsigned int cntxt_id;
     66	struct ch_sched_queue param;
     67};
     68
     69struct sched_flowc_entry {
     70	struct list_head list;
     71	struct ch_sched_flowc param;
     72};
     73
     74struct sched_class {
     75	u8 state;
     76	u8 idx;
     77	struct ch_sched_params info;
     78	enum sched_bind_type bind_type;
     79	struct list_head entry_list;
     80	atomic_t refcnt;
     81};
     82
     83struct sched_table {      /* per port scheduling table */
     84	u8 sched_size;
     85	struct sched_class tab[];
     86};
     87
     88static inline bool can_sched(struct net_device *dev)
     89{
     90	struct port_info *pi = netdev2pinfo(dev);
     91
     92	return !pi->sched_tbl ? false : true;
     93}
     94
     95static inline bool valid_class_id(struct net_device *dev, u8 class_id)
     96{
     97	struct port_info *pi = netdev2pinfo(dev);
     98
     99	if ((class_id > pi->sched_tbl->sched_size - 1) &&
    100	    (class_id != SCHED_CLS_NONE))
    101		return false;
    102
    103	return true;
    104}
    105
    106struct sched_class *cxgb4_sched_queue_lookup(struct net_device *dev,
    107					     struct ch_sched_queue *p);
    108int cxgb4_sched_class_bind(struct net_device *dev, void *arg,
    109			   enum sched_bind_type type);
    110int cxgb4_sched_class_unbind(struct net_device *dev, void *arg,
    111			     enum sched_bind_type type);
    112
    113struct sched_class *cxgb4_sched_class_alloc(struct net_device *dev,
    114					    struct ch_sched_params *p);
    115void cxgb4_sched_class_free(struct net_device *dev, u8 classid);
    116
    117struct sched_table *t4_init_sched(unsigned int size);
    118void t4_cleanup_sched(struct adapter *adap);
    119#endif  /* __CXGB4_SCHED_H */