1 | /* |
2 | * Copyright (c) 2012-2021 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 | #if SKYWALK |
37 | #include <skywalk/os_skywalk.h> |
38 | #endif /* SKYWALK */ |
39 | |
40 | #define FADV_SUCCESS 0 /* success */ |
41 | #define FADV_FLOW_CONTROLLED 1 /* regular flow control */ |
42 | #define FADV_SUSPENDED 2 /* flow control due to suspension */ |
43 | |
44 | struct flowadv { |
45 | int32_t code; /* FADV advisory code */ |
46 | }; |
47 | |
48 | typedef enum fce_event_type { |
49 | FCE_EVENT_TYPE_FLOW_CONTROL_FEEDBACK = 0, |
50 | FCE_EVENT_TYPE_CONGESTION_EXPERIENCED = 1, |
51 | } fce_event_type_t; |
52 | |
53 | #ifdef BSD_KERNEL_PRIVATE |
54 | struct flowadv_fcentry { |
55 | STAILQ_ENTRY(flowadv_fcentry) fce_link; |
56 | u_int32_t fce_flowsrc_type; /* FLOWSRC values */ |
57 | u_int32_t fce_flowid; |
58 | u_int32_t fce_ce_cnt; |
59 | u_int32_t fce_pkts_since_last_report; |
60 | fce_event_type_t fce_event_type; |
61 | #if SKYWALK |
62 | flowadv_token_t fce_flowsrc_token; |
63 | flowadv_idx_t fce_flowsrc_fidx; |
64 | struct ifnet *fce_ifp; |
65 | #endif /* SKYWALK */ |
66 | }; |
67 | |
68 | STAILQ_HEAD(flowadv_fclist, flowadv_fcentry); |
69 | |
70 | __BEGIN_DECLS |
71 | |
72 | extern void flowadv_init(void); |
73 | extern struct flowadv_fcentry *flowadv_alloc_entry(int); |
74 | extern void flowadv_free_entry(struct flowadv_fcentry *); |
75 | extern void flowadv_add(struct flowadv_fclist *); |
76 | extern void flowadv_add_entry(struct flowadv_fcentry *); |
77 | |
78 | __END_DECLS |
79 | |
80 | #endif /* BSD_KERNEL_PRIVATE */ |
81 | #endif /* KERNEL_PRIVATE */ |
82 | #endif /* _NET_FLOWADV_H_ */ |
83 | |