These kfuncs are removed in commit 2f9838e25790 ("selftests/bpf: Cleanup bpf qdisc selftests"), but they are still referenced by multiple tests. Otherwise, we will get the following errors.

``` progs/bpf_qdisc_fail__incompl_ops.c:13:2: error: call to undeclared function 'bpf_qdisc_skb_drop'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 13 | bpf_qdisc_skb_drop(skb, to_free); | ^ 1 error generated. progs/bpf_qdisc_fifo.c:38:3: error: call to undeclared function 'bpf_qdisc_skb_drop'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 38 | bpf_qdisc_skb_drop(skb, to_free); | ^ progs/bpf_qdisc_fq.c:280:11: error: call to undeclared function 'bpf_skb_get_hash'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 280 | hash = bpf_skb_get_hash(skb) & q.orphan_mask; | ^ progs/bpf_qdisc_fq.c:287:11: error: call to undeclared function 'bpf_skb_get_hash'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 287 | hash = bpf_skb_get_hash(skb) & q.orphan_mask; | ^ progs/bpf_qdisc_fq.c:375:3: error: call to undeclared function 'bpf_qdisc_skb_drop'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 375 | bpf_qdisc_skb_drop(skb, to_free); | ^ progs/bpf_qdisc_fifo.c:71:2: error: call to undeclared function 'bpf_qdisc_bstats_update'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 71 | bpf_qdisc_bstats_update(sch, skb); | ^ progs/bpf_qdisc_fifo.c:106:4: error: call to undeclared function 'bpf_kfree_skb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 106 | bpf_kfree_skb(skb); | ^ 3 errors generated. progs/bpf_qdisc_fq.c:614:3: error: call to undeclared function 'bpf_qdisc_bstats_update'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 614 | bpf_qdisc_bstats_update(sch, skb); | ^ progs/bpf_qdisc_fq.c:619:3: error: call to undeclared function 'bpf_qdisc_watchdog_schedule'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 619 | bpf_qdisc_watchdog_schedule(sch, cb_ctx.expire, q.timer_slack); | ^ 5 errors generated. ```

Fixes: 2f9838e25790 ("selftests/bpf: Cleanup bpf qdisc selftests") Signed-off-by: Xing Guo higuoxing@gmail.com --- tools/testing/selftests/bpf/progs/bpf_qdisc_common.h | 6 ++++++ 1 file changed, 6 insertions(+)

diff --git a/tools/testing/selftests/bpf/progs/bpf_qdisc_common.h b/tools/testing/selftests/bpf/progs/bpf_qdisc_common.h index 3754f581b328..7e7f2fe04f22 100644 --- a/tools/testing/selftests/bpf/progs/bpf_qdisc_common.h +++ b/tools/testing/selftests/bpf/progs/bpf_qdisc_common.h @@ -14,6 +14,12 @@

struct bpf_sk_buff_ptr;

+u32 bpf_skb_get_hash(struct sk_buff *p) __ksym; +void bpf_kfree_skb(struct sk_buff *p) __ksym; +void bpf_qdisc_skb_drop(struct sk_buff *p, struct bpf_sk_buff_ptr *to_free) __ksym; +void bpf_qdisc_watchdog_schedule(struct Qdisc *sch, u64 expire, u64 delta_ns) __ksym; +void bpf_qdisc_bstats_update(struct Qdisc *sch, const struct sk_buff *skb) __ksym; + static struct qdisc_skb_cb *qdisc_skb_cb(const struct sk_buff *skb) { return (struct qdisc_skb_cb *)skb->cb;