4ec4762d8e
Add TC-MATCHALL classifier offload with TC-POLICE action applied for all outgoing traffic on the underlying interface. Split flow block offload to support both egress and ingress classification. For example, to rate limit all outgoing traffic to 1 Gbps: $ tc qdisc add dev enp2s0f4 clsact $ tc filter add dev enp2s0f4 egress matchall skip_sw \ action police rate 1Gbit burst 8Kbit Note that skip_sw is important. Otherwise, both stack and hardware will end up doing policing. Policing can't be shared across flow blocks. Only 1 egress matchall rule can be active at a time on the underlying interface. v5: - No change. v4: - Removed check to reject police offload if prio is not 1. - Moved TC_SETUP_BLOCK code to separate function. v3: - Added check to reject police offload if prio is not 1. - Assign block_shared variable only for TC_SETUP_BLOCK. v2: - Added check to reject flow block sharing for policers. Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
118 lines
3.2 KiB
C
118 lines
3.2 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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SCHED_FW_OP_DEL,
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};
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enum sched_bind_type {
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SCHED_QUEUE,
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SCHED_FLOWC,
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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_flowc_entry {
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struct list_head list;
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struct ch_sched_flowc 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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enum sched_bind_type bind_type;
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struct list_head entry_list;
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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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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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void cxgb4_sched_class_free(struct net_device *dev, u8 classid);
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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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