1*043036a2SApple OSS Distributions /* 2*043036a2SApple OSS Distributions * Copyright (c) 2012-2021 Apple Inc. All rights reserved. 3*043036a2SApple OSS Distributions * 4*043036a2SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*043036a2SApple OSS Distributions * 6*043036a2SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*043036a2SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*043036a2SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*043036a2SApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*043036a2SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*043036a2SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*043036a2SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*043036a2SApple OSS Distributions * terms of an Apple operating system software license agreement. 14*043036a2SApple OSS Distributions * 15*043036a2SApple OSS Distributions * Please obtain a copy of the License at 16*043036a2SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*043036a2SApple OSS Distributions * 18*043036a2SApple OSS Distributions * The Original Code and all software distributed under the License are 19*043036a2SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*043036a2SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*043036a2SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*043036a2SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*043036a2SApple OSS Distributions * Please see the License for the specific language governing rights and 24*043036a2SApple OSS Distributions * limitations under the License. 25*043036a2SApple OSS Distributions * 26*043036a2SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*043036a2SApple OSS Distributions */ 28*043036a2SApple OSS Distributions 29*043036a2SApple OSS Distributions #ifndef _NET_FLOWADV_H_ 30*043036a2SApple OSS Distributions #define _NET_FLOWADV_H_ 31*043036a2SApple OSS Distributions 32*043036a2SApple OSS Distributions #ifdef KERNEL_PRIVATE 33*043036a2SApple OSS Distributions #include <sys/types.h> 34*043036a2SApple OSS Distributions #include <sys/queue.h> 35*043036a2SApple OSS Distributions 36*043036a2SApple OSS Distributions #if SKYWALK 37*043036a2SApple OSS Distributions #include <skywalk/os_skywalk.h> 38*043036a2SApple OSS Distributions #endif /* SKYWALK */ 39*043036a2SApple OSS Distributions 40*043036a2SApple OSS Distributions #define FADV_SUCCESS 0 /* success */ 41*043036a2SApple OSS Distributions #define FADV_FLOW_CONTROLLED 1 /* regular flow control */ 42*043036a2SApple OSS Distributions #define FADV_SUSPENDED 2 /* flow control due to suspension */ 43*043036a2SApple OSS Distributions #define FADV_CONGESTED 3 /* AQM gives congestion notification signal */ 44*043036a2SApple OSS Distributions 45*043036a2SApple OSS Distributions struct flowadv { 46*043036a2SApple OSS Distributions int32_t code; /* FADV advisory code */ 47*043036a2SApple OSS Distributions }; 48*043036a2SApple OSS Distributions 49*043036a2SApple OSS Distributions typedef enum fce_event_type { 50*043036a2SApple OSS Distributions FCE_EVENT_TYPE_FLOW_CONTROL_FEEDBACK = 0, 51*043036a2SApple OSS Distributions FCE_EVENT_TYPE_CONGESTION_EXPERIENCED = 1, 52*043036a2SApple OSS Distributions } fce_event_type_t; 53*043036a2SApple OSS Distributions 54*043036a2SApple OSS Distributions #ifdef BSD_KERNEL_PRIVATE 55*043036a2SApple OSS Distributions struct flowadv_fcentry { 56*043036a2SApple OSS Distributions STAILQ_ENTRY(flowadv_fcentry) fce_link; 57*043036a2SApple OSS Distributions u_int32_t fce_flowsrc_type; /* FLOWSRC values */ 58*043036a2SApple OSS Distributions u_int32_t fce_flowid; 59*043036a2SApple OSS Distributions u_int32_t fce_congestion_cnt; 60*043036a2SApple OSS Distributions u_int32_t l4s_ce_cnt; 61*043036a2SApple OSS Distributions u_int32_t fce_pkts_since_last_report; 62*043036a2SApple OSS Distributions fce_event_type_t fce_event_type; 63*043036a2SApple OSS Distributions #if SKYWALK 64*043036a2SApple OSS Distributions flowadv_token_t fce_flowsrc_token; 65*043036a2SApple OSS Distributions flowadv_idx_t fce_flowsrc_fidx; 66*043036a2SApple OSS Distributions struct ifnet *fce_ifp; 67*043036a2SApple OSS Distributions #endif /* SKYWALK */ 68*043036a2SApple OSS Distributions }; 69*043036a2SApple OSS Distributions 70*043036a2SApple OSS Distributions STAILQ_HEAD(flowadv_fclist, flowadv_fcentry); 71*043036a2SApple OSS Distributions 72*043036a2SApple OSS Distributions __BEGIN_DECLS 73*043036a2SApple OSS Distributions 74*043036a2SApple OSS Distributions extern void flowadv_init(void); 75*043036a2SApple OSS Distributions extern struct flowadv_fcentry *flowadv_alloc_entry(int); 76*043036a2SApple OSS Distributions extern void flowadv_free_entry(struct flowadv_fcentry *); 77*043036a2SApple OSS Distributions extern void flowadv_add(struct flowadv_fclist *); 78*043036a2SApple OSS Distributions extern void flowadv_add_entry(struct flowadv_fcentry *); 79*043036a2SApple OSS Distributions 80*043036a2SApple OSS Distributions __END_DECLS 81*043036a2SApple OSS Distributions 82*043036a2SApple OSS Distributions #endif /* BSD_KERNEL_PRIVATE */ 83*043036a2SApple OSS Distributions #endif /* KERNEL_PRIVATE */ 84*043036a2SApple OSS Distributions #endif /* _NET_FLOWADV_H_ */ 85