1*a1e26a70SApple OSS Distributions /* 2*a1e26a70SApple OSS Distributions * Copyright (c) 2012-2021 Apple Inc. All rights reserved. 3*a1e26a70SApple OSS Distributions * 4*a1e26a70SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*a1e26a70SApple OSS Distributions * 6*a1e26a70SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*a1e26a70SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*a1e26a70SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*a1e26a70SApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*a1e26a70SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*a1e26a70SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*a1e26a70SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*a1e26a70SApple OSS Distributions * terms of an Apple operating system software license agreement. 14*a1e26a70SApple OSS Distributions * 15*a1e26a70SApple OSS Distributions * Please obtain a copy of the License at 16*a1e26a70SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*a1e26a70SApple OSS Distributions * 18*a1e26a70SApple OSS Distributions * The Original Code and all software distributed under the License are 19*a1e26a70SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*a1e26a70SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*a1e26a70SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*a1e26a70SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*a1e26a70SApple OSS Distributions * Please see the License for the specific language governing rights and 24*a1e26a70SApple OSS Distributions * limitations under the License. 25*a1e26a70SApple OSS Distributions * 26*a1e26a70SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*a1e26a70SApple OSS Distributions */ 28*a1e26a70SApple OSS Distributions 29*a1e26a70SApple OSS Distributions #ifndef _NET_FLOWADV_H_ 30*a1e26a70SApple OSS Distributions #define _NET_FLOWADV_H_ 31*a1e26a70SApple OSS Distributions 32*a1e26a70SApple OSS Distributions #ifdef KERNEL_PRIVATE 33*a1e26a70SApple OSS Distributions #include <sys/types.h> 34*a1e26a70SApple OSS Distributions #include <sys/queue.h> 35*a1e26a70SApple OSS Distributions 36*a1e26a70SApple OSS Distributions #if SKYWALK 37*a1e26a70SApple OSS Distributions #include <skywalk/os_skywalk.h> 38*a1e26a70SApple OSS Distributions #endif /* SKYWALK */ 39*a1e26a70SApple OSS Distributions 40*a1e26a70SApple OSS Distributions #define FADV_SUCCESS 0 /* success */ 41*a1e26a70SApple OSS Distributions #define FADV_FLOW_CONTROLLED 1 /* regular flow control */ 42*a1e26a70SApple OSS Distributions #define FADV_SUSPENDED 2 /* flow control due to suspension */ 43*a1e26a70SApple OSS Distributions 44*a1e26a70SApple OSS Distributions struct flowadv { 45*a1e26a70SApple OSS Distributions int32_t code; /* FADV advisory code */ 46*a1e26a70SApple OSS Distributions }; 47*a1e26a70SApple OSS Distributions 48*a1e26a70SApple OSS Distributions typedef enum fce_event_type { 49*a1e26a70SApple OSS Distributions FCE_EVENT_TYPE_FLOW_CONTROL_FEEDBACK = 0, 50*a1e26a70SApple OSS Distributions FCE_EVENT_TYPE_CONGESTION_EXPERIENCED = 1, 51*a1e26a70SApple OSS Distributions } fce_event_type_t; 52*a1e26a70SApple OSS Distributions 53*a1e26a70SApple OSS Distributions #ifdef BSD_KERNEL_PRIVATE 54*a1e26a70SApple OSS Distributions struct flowadv_fcentry { 55*a1e26a70SApple OSS Distributions STAILQ_ENTRY(flowadv_fcentry) fce_link; 56*a1e26a70SApple OSS Distributions u_int32_t fce_flowsrc_type; /* FLOWSRC values */ 57*a1e26a70SApple OSS Distributions u_int32_t fce_flowid; 58*a1e26a70SApple OSS Distributions u_int32_t fce_ce_cnt; 59*a1e26a70SApple OSS Distributions u_int32_t fce_pkts_since_last_report; 60*a1e26a70SApple OSS Distributions fce_event_type_t fce_event_type; 61*a1e26a70SApple OSS Distributions #if SKYWALK 62*a1e26a70SApple OSS Distributions flowadv_token_t fce_flowsrc_token; 63*a1e26a70SApple OSS Distributions flowadv_idx_t fce_flowsrc_fidx; 64*a1e26a70SApple OSS Distributions struct ifnet *fce_ifp; 65*a1e26a70SApple OSS Distributions #endif /* SKYWALK */ 66*a1e26a70SApple OSS Distributions }; 67*a1e26a70SApple OSS Distributions 68*a1e26a70SApple OSS Distributions STAILQ_HEAD(flowadv_fclist, flowadv_fcentry); 69*a1e26a70SApple OSS Distributions 70*a1e26a70SApple OSS Distributions __BEGIN_DECLS 71*a1e26a70SApple OSS Distributions 72*a1e26a70SApple OSS Distributions extern void flowadv_init(void); 73*a1e26a70SApple OSS Distributions extern struct flowadv_fcentry *flowadv_alloc_entry(int); 74*a1e26a70SApple OSS Distributions extern void flowadv_free_entry(struct flowadv_fcentry *); 75*a1e26a70SApple OSS Distributions extern void flowadv_add(struct flowadv_fclist *); 76*a1e26a70SApple OSS Distributions extern void flowadv_add_entry(struct flowadv_fcentry *); 77*a1e26a70SApple OSS Distributions 78*a1e26a70SApple OSS Distributions __END_DECLS 79*a1e26a70SApple OSS Distributions 80*a1e26a70SApple OSS Distributions #endif /* BSD_KERNEL_PRIVATE */ 81*a1e26a70SApple OSS Distributions #endif /* KERNEL_PRIVATE */ 82*a1e26a70SApple OSS Distributions #endif /* _NET_FLOWADV_H_ */ 83