Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
bpf: net_sched: Support updating bstats
Add a kfunc to update Qdisc bstats when an skb is dequeued. The kfunc is
only available in .dequeue programs.
Signed-off-by: Amery Hung <amery.hung@bytedance.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://patch.msgid.link/20250409214606.2000194-6-ameryhung@gmail.com
authored by
Amery Hung
and committed by
Martin KaFai Lau
544e0a1f
7a2dafda
+11
+11
net/sched/bpf_qdisc.c
+11
net/sched/bpf_qdisc.c
···
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qdisc_watchdog_cancel(&q->watchdog);
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}
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/* bpf_qdisc_bstats_update - Update Qdisc basic statistics
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* @sch: The qdisc from which an skb is dequeued.
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* @skb: The skb to be dequeued.
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*/
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__bpf_kfunc void bpf_qdisc_bstats_update(struct Qdisc *sch, const struct sk_buff *skb)
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{
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bstats_update(&sch->bstats, skb);
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}
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__bpf_kfunc_end_defs();
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BTF_KFUNCS_START(qdisc_kfunc_ids)
···
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BTF_ID_FLAGS(func, bpf_qdisc_watchdog_schedule, KF_TRUSTED_ARGS)
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BTF_ID_FLAGS(func, bpf_qdisc_init_prologue, KF_TRUSTED_ARGS)
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BTF_ID_FLAGS(func, bpf_qdisc_reset_destroy_epilogue, KF_TRUSTED_ARGS)
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BTF_ID_FLAGS(func, bpf_qdisc_bstats_update, KF_TRUSTED_ARGS)
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BTF_KFUNCS_END(qdisc_kfunc_ids)
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BTF_SET_START(qdisc_common_kfunc_set)
···
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BTF_SET_START(qdisc_dequeue_kfunc_set)
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BTF_ID(func, bpf_qdisc_watchdog_schedule)
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BTF_ID(func, bpf_qdisc_bstats_update)
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BTF_SET_END(qdisc_dequeue_kfunc_set)
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enum qdisc_ops_kf_flags {