X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/7e41aa883dd258f888d0470250eead40a53ef1f5..3903760236c30e3b5ace7a4eefac3a269d68957c:/bsd/net/classq/classq_fq_codel.h

diff --git a/bsd/net/classq/classq_fq_codel.h b/bsd/net/classq/classq_fq_codel.h
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index 000000000..35f8341b2
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+++ b/bsd/net/classq/classq_fq_codel.h
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+/*
+ * Copyright (c) 2016 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ */
+
+#ifndef _NET_CLASSQ_CLASSQ_FQ_CODEL_H
+#define	_NET_CLASSQ_CLASSQ_FQ_CODEL_H
+#ifdef PRIVATE
+#ifdef BSD_KERNEL_PRIVATE
+#include <stdbool.h>
+#include <sys/time.h>
+#include <net/flowadv.h>
+#include <net/classq/if_classq.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define	FQ_MIN_FC_THRESHOLD_BYTES	7500
+#define	FQ_IS_DELAYHIGH(_fq_) ((_fq_)->fq_flags & FQF_DELAY_HIGH)
+#define	FQ_SET_DELAY_HIGH(_fq_) do { \
+	(_fq_)->fq_flags |= FQF_DELAY_HIGH; \
+} while (0)
+#define	FQ_CLEAR_DELAY_HIGH(_fq_) do { \
+	(_fq_)->fq_flags &= ~FQF_DELAY_HIGH; \
+} while (0)
+
+typedef struct flowq {
+	MBUFQ_HEAD(pktq_head) fq_mbufq; /* Packet queue */
+#define	FQF_FLOWCTL_CAPABLE 0x01 /* Use flow control instead of drop */
+#define	FQF_DELAY_HIGH	0x02	/* Min delay is greater than target */
+#define	FQF_NEW_FLOW	0x04	/* Currently on new flows queue */
+#define	FQF_OLD_FLOW	0x08	/* Currently on old flows queue */
+#define	FQF_FLOWCTL_ON	0x10	/* Currently flow controlled */
+	u_int8_t	fq_flags;	/* flags */
+	u_int8_t	fq_sc_index; /* service_class index */
+	int16_t		fq_deficit;	/* Deficit for scheduling */
+	u_int32_t	fq_bytes;	/* Number of bytes in the queue */
+	u_int64_t	fq_min_qdelay; /* min queue delay for Codel */
+	u_int64_t	fq_updatetime; /* next update interval */
+	u_int64_t	fq_getqtime;	/* last dequeue time */
+	SLIST_ENTRY(flowq) fq_hashlink; /* for flow queue hash table */
+	STAILQ_ENTRY(flowq) fq_actlink; /* for new/old flow queues */
+	u_int32_t	fq_flowhash;	/* Flow hash */
+	u_int32_t	fq_dequeue_seq;	/* Last dequeue seq */
+} fq_t;
+
+struct fq_codel_sched_data;
+struct fq_if_classq;
+
+/* Function definitions */
+extern void fq_codel_init(void);
+extern fq_t *fq_alloc(int);
+extern void fq_destroy(fq_t *);
+extern int fq_addq(struct fq_codel_sched_data *, struct mbuf *,
+    struct fq_if_classq *);
+extern struct mbuf *fq_getq_flow(struct fq_codel_sched_data *, fq_t *);
+extern void fq_head_drop(struct fq_codel_sched_data *, fq_t *);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* BSD_KERNEL_PRIVATE */
+#endif /* PRIVATE */
+#endif /* _NET_CLASSQ_CLASSQ_FQ_CODEL_H */