Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) #ifndef __NET_SCHED_CODEL_QDISC_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #define __NET_SCHED_CODEL_QDISC_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Codel - The Controlled-Delay Active Queue Management algorithm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  *  Copyright (C) 2011-2012 Kathleen Nichols <nichols@pollere.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  *  Copyright (C) 2011-2012 Van Jacobson <van@pollere.net>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  *  Copyright (C) 2012 Michael D. Taht <dave.taht@bufferbloat.net>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  *  Copyright (C) 2012,2015 Eric Dumazet <edumazet@google.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)  * Redistribution and use in source and binary forms, with or without
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)  * modification, are permitted provided that the following conditions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)  * are met:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)  * 1. Redistributions of source code must retain the above copyright
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)  *    notice, this list of conditions, and the following disclaimer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)  *    without modification.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)  * 2. Redistributions in binary form must reproduce the above copyright
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)  *    notice, this list of conditions and the following disclaimer in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)  *    documentation and/or other materials provided with the distribution.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)  * 3. The names of the authors may not be used to endorse or promote products
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)  *    derived from this software without specific prior written permission.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)  * Alternatively, provided that this notice is retained in full, this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)  * software may be distributed under the terms of the GNU General
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)  * Public License ("GPL") version 2, in which case the provisions of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)  * GPL apply INSTEAD OF those given above.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)  * DAMAGE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) /* Controlling Queue Delay (CoDel) algorithm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)  * =========================================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)  * Source : Kathleen Nichols and Van Jacobson
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)  * http://queue.acm.org/detail.cfm?id=2209336
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)  * Implemented on linux by Dave Taht and Eric Dumazet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) /* Qdiscs using codel plugin must use codel_skb_cb in their own cb[] */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct codel_skb_cb {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	codel_time_t enqueue_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	unsigned int mem_usage;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) static struct codel_skb_cb *get_codel_cb(const struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	qdisc_cb_private_validate(skb, sizeof(struct codel_skb_cb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	return (struct codel_skb_cb *)qdisc_skb_cb(skb)->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) static codel_time_t codel_get_enqueue_time(const struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 	return get_codel_cb(skb)->enqueue_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) static void codel_set_enqueue_time(struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	get_codel_cb(skb)->enqueue_time = codel_get_time();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) #endif