1*0f4c859eSApple OSS Distributions /* 2*0f4c859eSApple OSS Distributions * Copyright (c) 2012-2021 Apple Inc. All rights reserved. 3*0f4c859eSApple OSS Distributions * 4*0f4c859eSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*0f4c859eSApple OSS Distributions * 6*0f4c859eSApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*0f4c859eSApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*0f4c859eSApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*0f4c859eSApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*0f4c859eSApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*0f4c859eSApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*0f4c859eSApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*0f4c859eSApple OSS Distributions * terms of an Apple operating system software license agreement. 14*0f4c859eSApple OSS Distributions * 15*0f4c859eSApple OSS Distributions * Please obtain a copy of the License at 16*0f4c859eSApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*0f4c859eSApple OSS Distributions * 18*0f4c859eSApple OSS Distributions * The Original Code and all software distributed under the License are 19*0f4c859eSApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*0f4c859eSApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*0f4c859eSApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*0f4c859eSApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*0f4c859eSApple OSS Distributions * Please see the License for the specific language governing rights and 24*0f4c859eSApple OSS Distributions * limitations under the License. 25*0f4c859eSApple OSS Distributions * 26*0f4c859eSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*0f4c859eSApple OSS Distributions */ 28*0f4c859eSApple OSS Distributions 29*0f4c859eSApple OSS Distributions #ifndef _NET_FLOWADV_H_ 30*0f4c859eSApple OSS Distributions #define _NET_FLOWADV_H_ 31*0f4c859eSApple OSS Distributions 32*0f4c859eSApple OSS Distributions #ifdef KERNEL_PRIVATE 33*0f4c859eSApple OSS Distributions #include <sys/types.h> 34*0f4c859eSApple OSS Distributions #include <sys/queue.h> 35*0f4c859eSApple OSS Distributions 36*0f4c859eSApple OSS Distributions #if SKYWALK 37*0f4c859eSApple OSS Distributions #include <skywalk/os_skywalk.h> 38*0f4c859eSApple OSS Distributions #endif /* SKYWALK */ 39*0f4c859eSApple OSS Distributions 40*0f4c859eSApple OSS Distributions #define FADV_SUCCESS 0 /* success */ 41*0f4c859eSApple OSS Distributions #define FADV_FLOW_CONTROLLED 1 /* regular flow control */ 42*0f4c859eSApple OSS Distributions #define FADV_SUSPENDED 2 /* flow control due to suspension */ 43*0f4c859eSApple OSS Distributions 44*0f4c859eSApple OSS Distributions struct flowadv { 45*0f4c859eSApple OSS Distributions int32_t code; /* FADV advisory code */ 46*0f4c859eSApple OSS Distributions }; 47*0f4c859eSApple OSS Distributions 48*0f4c859eSApple OSS Distributions typedef enum fce_event_type { 49*0f4c859eSApple OSS Distributions FCE_EVENT_TYPE_FLOW_CONTROL_FEEDBACK = 0, 50*0f4c859eSApple OSS Distributions FCE_EVENT_TYPE_CONGESTION_EXPERIENCED = 1, 51*0f4c859eSApple OSS Distributions } fce_event_type_t; 52*0f4c859eSApple OSS Distributions 53*0f4c859eSApple OSS Distributions #ifdef BSD_KERNEL_PRIVATE 54*0f4c859eSApple OSS Distributions struct flowadv_fcentry { 55*0f4c859eSApple OSS Distributions STAILQ_ENTRY(flowadv_fcentry) fce_link; 56*0f4c859eSApple OSS Distributions u_int32_t fce_flowsrc_type; /* FLOWSRC values */ 57*0f4c859eSApple OSS Distributions u_int32_t fce_flowid; 58*0f4c859eSApple OSS Distributions u_int32_t fce_ce_cnt; 59*0f4c859eSApple OSS Distributions u_int32_t fce_pkts_since_last_report; 60*0f4c859eSApple OSS Distributions fce_event_type_t fce_event_type; 61*0f4c859eSApple OSS Distributions #if SKYWALK 62*0f4c859eSApple OSS Distributions flowadv_token_t fce_flowsrc_token; 63*0f4c859eSApple OSS Distributions flowadv_idx_t fce_flowsrc_fidx; 64*0f4c859eSApple OSS Distributions struct ifnet *fce_ifp; 65*0f4c859eSApple OSS Distributions #endif /* SKYWALK */ 66*0f4c859eSApple OSS Distributions }; 67*0f4c859eSApple OSS Distributions 68*0f4c859eSApple OSS Distributions STAILQ_HEAD(flowadv_fclist, flowadv_fcentry); 69*0f4c859eSApple OSS Distributions 70*0f4c859eSApple OSS Distributions __BEGIN_DECLS 71*0f4c859eSApple OSS Distributions 72*0f4c859eSApple OSS Distributions extern void flowadv_init(void); 73*0f4c859eSApple OSS Distributions extern struct flowadv_fcentry *flowadv_alloc_entry(int); 74*0f4c859eSApple OSS Distributions extern void flowadv_free_entry(struct flowadv_fcentry *); 75*0f4c859eSApple OSS Distributions extern void flowadv_add(struct flowadv_fclist *); 76*0f4c859eSApple OSS Distributions extern void flowadv_add_entry(struct flowadv_fcentry *); 77*0f4c859eSApple OSS Distributions 78*0f4c859eSApple OSS Distributions __END_DECLS 79*0f4c859eSApple OSS Distributions 80*0f4c859eSApple OSS Distributions #endif /* BSD_KERNEL_PRIVATE */ 81*0f4c859eSApple OSS Distributions #endif /* KERNEL_PRIVATE */ 82*0f4c859eSApple OSS Distributions #endif /* _NET_FLOWADV_H_ */ 83