82 lines
2.7 KiB
C
82 lines
2.7 KiB
C
/*
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* Copyright (c) 2012-2021 Apple Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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*/
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#ifndef _NET_FLOWADV_H_
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#define _NET_FLOWADV_H_
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#ifdef KERNEL_PRIVATE
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#include <sys/types.h>
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#include <sys/queue.h>
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#if SKYWALK
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#include <skywalk/os_skywalk.h>
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#endif /* SKYWALK */
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#define FADV_SUCCESS 0 /* success */
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#define FADV_FLOW_CONTROLLED 1 /* regular flow control */
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#define FADV_SUSPENDED 2 /* flow control due to suspension */
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struct flowadv {
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int32_t code; /* FADV advisory code */
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};
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typedef enum fce_event_type {
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FCE_EVENT_TYPE_FLOW_CONTROL_FEEDBACK = 0,
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FCE_EVENT_TYPE_CONGESTION_EXPERIENCED = 1,
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} fce_event_type_t;
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#ifdef BSD_KERNEL_PRIVATE
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struct flowadv_fcentry {
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STAILQ_ENTRY(flowadv_fcentry) fce_link;
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u_int32_t fce_flowsrc_type; /* FLOWSRC values */
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u_int32_t fce_flowid;
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u_int32_t fce_ce_cnt;
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u_int32_t fce_pkts_since_last_report;
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fce_event_type_t fce_event_type;
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#if SKYWALK
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flowadv_token_t fce_flowsrc_token;
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flowadv_idx_t fce_flowsrc_fidx;
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struct ifnet *fce_ifp;
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#endif /* SKYWALK */
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};
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STAILQ_HEAD(flowadv_fclist, flowadv_fcentry);
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__BEGIN_DECLS
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extern void flowadv_init(void);
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extern struct flowadv_fcentry *flowadv_alloc_entry(int);
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extern void flowadv_free_entry(struct flowadv_fcentry *);
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extern void flowadv_add(struct flowadv_fclist *);
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extern void flowadv_add_entry(struct flowadv_fcentry *);
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__END_DECLS
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#endif /* BSD_KERNEL_PRIVATE */
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#endif /* KERNEL_PRIVATE */
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#endif /* _NET_FLOWADV_H_ */
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