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82 lines
2.7 KiB
C
82 lines
2.7 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2019 Lutz Donnerhacke <lutz@donnerhacke.de>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _NETGRAPH_QOS_H_
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#define _NETGRAPH_QOS_H_
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#include <sys/mbuf.h>
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/* ABI cookie */
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#define M_QOS_COOKIE 1571268051
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#define MTAG_SIZE(X) ( sizeof(struct X) - sizeof(struct m_tag) )
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/*
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* Definition of types within this ABI:
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* - Choose a type (16bit) by i.e. "echo $((1000+$(date +%s)%64536))"
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* - Retry if the type is already in use
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* - Define the structure for the type according to mbuf_tags(9)
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* struct m_qos_foo {
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* struct m_tag tag;
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* ...
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* };
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* Preferred usage:
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* struct m_qos_foo *p = (void *)m_tag_locate(m,
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* M_QOS_COOKIE, M_QOS_FOO, ...);
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* or
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* p = (void *)m_tag_alloc(
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* M_QOS_COOKIE, M_QOS_FOO, MTAG_SIZE(foo), ...);
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m_tag_prepend(m, &p->tag);
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*/
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/* Color marking type */
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#define M_QOS_COLOR 23568
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/* Keep colors ordered semantically in order to allow use of "<=" or ">=" */
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enum qos_color {
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QOS_COLOR_GREEN,
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QOS_COLOR_YELLOW,
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QOS_COLOR_RED
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};
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struct m_qos_color {
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struct m_tag tag;
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enum qos_color color;
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};
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/*
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* Priority class
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*
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* Processing per priority requires an overhead, which should
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* be static (i.e. for alloctating queues) and small (for memory)
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* So keep your chosen range limited.
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*/
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#define M_QOS_PRIORITY 28858
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struct m_qos_priority {
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struct m_tag tag;
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uint8_t priority; /* 0 - lowest */
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};
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#endif /* _NETGRAPH_QOS_H_ */
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