mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 08:58:07 +00:00
209bccbac9
Commitbf9009bf21b5 ("net/fq_impl: drop get_default_func, move default flow to fq_tin") remove its last user, so can remove it. Signed-off-by: Yue Haibing <yuehaibing@huawei.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://lore.kernel.org/r/20230807142111.33524-1-yuehaibing@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
101 lines
2.4 KiB
C
101 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright (c) 2016 Qualcomm Atheros, Inc
|
|
*
|
|
* Based on net/sched/sch_fq_codel.c
|
|
*/
|
|
#ifndef __NET_SCHED_FQ_H
|
|
#define __NET_SCHED_FQ_H
|
|
|
|
#include <linux/skbuff.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/types.h>
|
|
|
|
struct fq_tin;
|
|
|
|
/**
|
|
* struct fq_flow - per traffic flow queue
|
|
*
|
|
* @tin: owner of this flow. Used to manage collisions, i.e. when a packet
|
|
* hashes to an index which points to a flow that is already owned by a
|
|
* different tin the packet is destined to. In such case the implementer
|
|
* must provide a fallback flow
|
|
* @flowchain: can be linked to fq_tin's new_flows or old_flows. Used for DRR++
|
|
* (deficit round robin) based round robin queuing similar to the one
|
|
* found in net/sched/sch_fq_codel.c
|
|
* @queue: sk_buff queue to hold packets
|
|
* @backlog: number of bytes pending in the queue. The number of packets can be
|
|
* found in @queue.qlen
|
|
* @deficit: used for DRR++
|
|
*/
|
|
struct fq_flow {
|
|
struct fq_tin *tin;
|
|
struct list_head flowchain;
|
|
struct sk_buff_head queue;
|
|
u32 backlog;
|
|
int deficit;
|
|
};
|
|
|
|
/**
|
|
* struct fq_tin - a logical container of fq_flows
|
|
*
|
|
* Used to group fq_flows into a logical aggregate. DRR++ scheme is used to
|
|
* pull interleaved packets out of the associated flows.
|
|
*
|
|
* @new_flows: linked list of fq_flow
|
|
* @old_flows: linked list of fq_flow
|
|
*/
|
|
struct fq_tin {
|
|
struct list_head new_flows;
|
|
struct list_head old_flows;
|
|
struct list_head tin_list;
|
|
struct fq_flow default_flow;
|
|
u32 backlog_bytes;
|
|
u32 backlog_packets;
|
|
u32 overlimit;
|
|
u32 collisions;
|
|
u32 flows;
|
|
u32 tx_bytes;
|
|
u32 tx_packets;
|
|
};
|
|
|
|
/**
|
|
* struct fq - main container for fair queuing purposes
|
|
*
|
|
* @limit: max number of packets that can be queued across all flows
|
|
* @backlog: number of packets queued across all flows
|
|
*/
|
|
struct fq {
|
|
struct fq_flow *flows;
|
|
unsigned long *flows_bitmap;
|
|
|
|
struct list_head tin_backlog;
|
|
spinlock_t lock;
|
|
u32 flows_cnt;
|
|
u32 limit;
|
|
u32 memory_limit;
|
|
u32 memory_usage;
|
|
u32 quantum;
|
|
u32 backlog;
|
|
u32 overlimit;
|
|
u32 overmemory;
|
|
u32 collisions;
|
|
};
|
|
|
|
typedef struct sk_buff *fq_tin_dequeue_t(struct fq *,
|
|
struct fq_tin *,
|
|
struct fq_flow *flow);
|
|
|
|
typedef void fq_skb_free_t(struct fq *,
|
|
struct fq_tin *,
|
|
struct fq_flow *,
|
|
struct sk_buff *);
|
|
|
|
/* Return %true to filter (drop) the frame. */
|
|
typedef bool fq_skb_filter_t(struct fq *,
|
|
struct fq_tin *,
|
|
struct fq_flow *,
|
|
struct sk_buff *,
|
|
void *);
|
|
|
|
#endif
|