diff options
Diffstat (limited to 'drivers/net/ethernet/chelsio/cxgb4/sched.h')
| -rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/sched.h | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/sched.h b/drivers/net/ethernet/chelsio/cxgb4/sched.h new file mode 100644 index 000000000..5f8b871d7 --- /dev/null +++ b/drivers/net/ethernet/chelsio/cxgb4/sched.h @@ -0,0 +1,119 @@ +/* + * 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 */ |