^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (c) 2016 Qualcomm Atheros, Inc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Based on net/sched/sch_fq_codel.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #ifndef __NET_SCHED_FQ_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #define __NET_SCHED_FQ_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) struct fq_tin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * struct fq_flow - per traffic flow queue
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * @tin: owner of this flow. Used to manage collisions, i.e. when a packet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * hashes to an index which points to a flow that is already owned by a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * different tin the packet is destined to. In such case the implementer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * must provide a fallback flow
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * @flowchain: can be linked to fq_tin's new_flows or old_flows. Used for DRR++
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * (deficit round robin) based round robin queuing similar to the one
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * found in net/sched/sch_fq_codel.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * @backlogchain: can be linked to other fq_flow and fq. Used to keep track of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * fat flows and efficient head-dropping if packet limit is reached
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * @queue: sk_buff queue to hold packets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * @backlog: number of bytes pending in the queue. The number of packets can be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * found in @queue.qlen
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * @deficit: used for DRR++
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) struct fq_flow {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) struct fq_tin *tin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) struct list_head flowchain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct list_head backlogchain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) struct sk_buff_head queue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) u32 backlog;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) int deficit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * struct fq_tin - a logical container of fq_flows
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * Used to group fq_flows into a logical aggregate. DRR++ scheme is used to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * pull interleaved packets out of the associated flows.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * @new_flows: linked list of fq_flow
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * @old_flows: linked list of fq_flow
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) struct fq_tin {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) struct list_head new_flows;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) struct list_head old_flows;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) u32 backlog_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) u32 backlog_packets;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) u32 overlimit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) u32 collisions;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) u32 flows;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) u32 tx_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) u32 tx_packets;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * struct fq - main container for fair queuing purposes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * @backlogs: linked to fq_flows. Used to maintain fat flows for efficient
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) * head-dropping when @backlog reaches @limit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) * @limit: max number of packets that can be queued across all flows
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) * @backlog: number of packets queued across all flows
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) struct fq {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) struct fq_flow *flows;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) struct list_head backlogs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) spinlock_t lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) u32 flows_cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) u32 limit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) u32 memory_limit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) u32 memory_usage;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) u32 quantum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) u32 backlog;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) u32 overlimit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) u32 overmemory;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) u32 collisions;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) typedef struct sk_buff *fq_tin_dequeue_t(struct fq *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) struct fq_tin *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) struct fq_flow *flow);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) typedef void fq_skb_free_t(struct fq *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) struct fq_tin *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) struct fq_flow *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) struct sk_buff *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) /* Return %true to filter (drop) the frame. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) typedef bool fq_skb_filter_t(struct fq *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) struct fq_tin *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) struct fq_flow *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) struct sk_buff *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) void *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) typedef struct fq_flow *fq_flow_get_default_t(struct fq *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) struct fq_tin *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) int idx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) struct sk_buff *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) #endif
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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