1/* 2 * Copyright (c) 2012 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 29#ifndef _NET_FLOWADV_H_ 30#define _NET_FLOWADV_H_ 31 32#ifdef KERNEL_PRIVATE 33#include <sys/types.h> 34#include <sys/queue.h> 35 36#define FADV_SUCCESS 0 /* success */ 37#define FADV_FLOW_CONTROLLED 1 /* regular flow control */ 38#define FADV_SUSPENDED 2 /* flow control due to suspension */ 39 40struct flowadv { 41 int32_t code; /* FADV advisory code */ 42}; 43 44#ifdef BSD_KERNEL_PRIVATE 45struct flowadv_fcentry { 46 STAILQ_ENTRY(flowadv_fcentry) fce_link; 47 u_int32_t fce_flowsrc; /* FLOWSRC values */ 48 u_int32_t fce_flowid; 49}; 50 51STAILQ_HEAD(flowadv_fclist, flowadv_fcentry); 52 53__BEGIN_DECLS 54 55extern void flowadv_init(void); 56extern struct flowadv_fcentry *flowadv_alloc_entry(int); 57extern void flowadv_free_entry(struct flowadv_fcentry *); 58extern void flowadv_add(struct flowadv_fclist *); 59 60__END_DECLS 61 62#endif /* BSD_KERNEL_PRIVATE */ 63#endif /* KERNEL_PRIVATE */ 64#endif /* _NET_FLOWADV_H_ */ 65