There is no fundamental reason, why multi-buffer XDP and XDP kfunc RX hints cannot coexist in a single program. Allow those features to be used together by modifying the flags conditions. Suggested-by: Stanislav Fomichev <sdf@xxxxxxxxxx> Link: https://lore.kernel.org/bpf/CAKH8qBuzgtJj=OKMdsxEkyML36VsAuZpcrsXcyqjdKXSJCBq=Q@xxxxxxxxxxxxxx/ Signed-off-by: Larysa Zaremba <larysa.zaremba@xxxxxxxxx> --- kernel/bpf/offload.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/kernel/bpf/offload.c b/kernel/bpf/offload.c index ee35f33a96d1..43aded96c79b 100644 --- a/kernel/bpf/offload.c +++ b/kernel/bpf/offload.c @@ -232,7 +232,11 @@ int bpf_prog_dev_bound_init(struct bpf_prog *prog, union bpf_attr *attr) attr->prog_type != BPF_PROG_TYPE_XDP) return -EINVAL; - if (attr->prog_flags & ~BPF_F_XDP_DEV_BOUND_ONLY) + if (attr->prog_flags & ~(BPF_F_XDP_DEV_BOUND_ONLY | BPF_F_XDP_HAS_FRAGS)) + return -EINVAL; + + if (attr->prog_flags & BPF_F_XDP_HAS_FRAGS && + !(attr->prog_flags & BPF_F_XDP_DEV_BOUND_ONLY)) return -EINVAL; if (attr->prog_type == BPF_PROG_TYPE_SCHED_CLS && -- 2.41.0
