From: Amery Hung <amery.hung@xxxxxxxxxxxxx>
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@xxxxxxxxxxxxx>
Acked-by: Toke Høiland-Jørgensen <toke@xxxxxxxxxx>
---
net/sched/bpf_qdisc.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/net/sched/bpf_qdisc.c b/net/sched/bpf_qdisc.c
index 5f4ab4877535..5aff83d7d1d8 100644
--- a/net/sched/bpf_qdisc.c
+++ b/net/sched/bpf_qdisc.c
@@ -254,6 +254,15 @@ __bpf_kfunc void bpf_qdisc_reset_destroy_epilogue(struct Qdisc *sch)
qdisc_watchdog_cancel(&q->watchdog);
}
+/* bpf_qdisc_bstats_update - Update Qdisc basic statistics
+ * @sch: The qdisc from which an skb is dequeued.
+ * @skb: The skb to be dequeued.
+ */
+__bpf_kfunc void bpf_qdisc_bstats_update(struct Qdisc *sch, const struct sk_buff *skb)
+{
+ bstats_update(&sch->bstats, skb);
+}
+
__bpf_kfunc_end_defs();
BTF_KFUNCS_START(qdisc_kfunc_ids)
@@ -264,6 +273,7 @@ BTF_ID_FLAGS(func, bpf_dynptr_from_skb, KF_TRUSTED_ARGS)
BTF_ID_FLAGS(func, bpf_qdisc_watchdog_schedule, KF_TRUSTED_ARGS)
BTF_ID_FLAGS(func, bpf_qdisc_init_prologue, KF_TRUSTED_ARGS)
BTF_ID_FLAGS(func, bpf_qdisc_reset_destroy_epilogue, KF_TRUSTED_ARGS)
+BTF_ID_FLAGS(func, bpf_qdisc_bstats_update, KF_TRUSTED_ARGS)
BTF_KFUNCS_END(qdisc_kfunc_ids)
BTF_SET_START(qdisc_common_kfunc_set)
@@ -279,6 +289,7 @@ BTF_SET_END(qdisc_enqueue_kfunc_set)
BTF_SET_START(qdisc_dequeue_kfunc_set)
BTF_ID(func, bpf_qdisc_watchdog_schedule)
+BTF_ID(func, bpf_qdisc_bstats_update)
BTF_SET_END(qdisc_dequeue_kfunc_set)
enum qdisc_ops_kf_flags {
--
2.47.1
