projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 39037602 A |
1 | /* |
| 2 | * Copyright (c) 2016 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_CLASSQ_CLASSQ_FQ_CODEL_H | |
| 30 | #define _NET_CLASSQ_CLASSQ_FQ_CODEL_H | |
| 31 | #ifdef PRIVATE | |
| 32 | #ifdef BSD_KERNEL_PRIVATE | |
| 33 | #include <stdbool.h> | |
| 34 | #include <sys/time.h> | |
| 35 | #include <net/flowadv.h> | |
| 36 | #include <net/classq/if_classq.h> | |
| 37 | ||
| 38 | #ifdef __cplusplus | |
| 39 | extern "C" { | |
| 40 | #endif | |
| 41 | ||
| 42 | #define FQ_MIN_FC_THRESHOLD_BYTES 7500 | |
| 43 | #define FQ_IS_DELAYHIGH(_fq_) ((_fq_)->fq_flags & FQF_DELAY_HIGH) | |
| 44 | #define FQ_SET_DELAY_HIGH(_fq_) do { \ | |
| 45 | (_fq_)->fq_flags |= FQF_DELAY_HIGH; \ | |
| 46 | } while (0) | |
| 47 | #define FQ_CLEAR_DELAY_HIGH(_fq_) do { \ | |
| 48 | (_fq_)->fq_flags &= ~FQF_DELAY_HIGH; \ | |
| 49 | } while (0) | |
| 50 | ||
| 51 | typedef struct flowq { | |
| 52 | MBUFQ_HEAD(pktq_head) fq_mbufq; /* Packet queue */ | |
| 53 | #define FQF_FLOWCTL_CAPABLE 0x01 /* Use flow control instead of drop */ | |
| 54 | #define FQF_DELAY_HIGH 0x02 /* Min delay is greater than target */ | |
| 55 | #define FQF_NEW_FLOW 0x04 /* Currently on new flows queue */ | |
| 56 | #define FQF_OLD_FLOW 0x08 /* Currently on old flows queue */ | |
| 57 | #define FQF_FLOWCTL_ON 0x10 /* Currently flow controlled */ | |
| 58 | u_int8_t fq_flags; /* flags */ | |
| 59 | u_int8_t fq_sc_index; /* service_class index */ | |
| 60 | int16_t fq_deficit; /* Deficit for scheduling */ | |
| 61 | u_int32_t fq_bytes; /* Number of bytes in the queue */ | |
| 62 | u_int64_t fq_min_qdelay; /* min queue delay for Codel */ | |
| 63 | u_int64_t fq_updatetime; /* next update interval */ | |
| 64 | u_int64_t fq_getqtime; /* last dequeue time */ | |
| 65 | SLIST_ENTRY(flowq) fq_hashlink; /* for flow queue hash table */ | |
| 66 | STAILQ_ENTRY(flowq) fq_actlink; /* for new/old flow queues */ | |
| 67 | u_int32_t fq_flowhash; /* Flow hash */ | |
| 68 | u_int32_t fq_dequeue_seq; /* Last dequeue seq */ | |
| 69 | } fq_t; | |
| 70 | ||
| 71 | struct fq_codel_sched_data; | |
| 72 | struct fq_if_classq; | |
| 73 | ||
| 74 | /* Function definitions */ | |
| 75 | extern void fq_codel_init(void); | |
| 76 | extern fq_t *fq_alloc(int); | |
| 77 | extern void fq_destroy(fq_t *); | |
| 78 | extern int fq_addq(struct fq_codel_sched_data *, struct mbuf *, | |
| 79 | struct fq_if_classq *); | |
| 80 | extern struct mbuf *fq_getq_flow(struct fq_codel_sched_data *, fq_t *); | |
| 81 | extern void fq_head_drop(struct fq_codel_sched_data *, fq_t *); | |
| 82 | ||
| 83 | #ifdef __cplusplus | |
| 84 | } | |
| 85 | #endif | |
| 86 | #endif /* BSD_KERNEL_PRIVATE */ | |
| 87 | #endif /* PRIVATE */ | |
| 88 | #endif /* _NET_CLASSQ_CLASSQ_FQ_CODEL_H */ |