On 10/21/24 12:44, Paolo Abeni wrote: > On 10/15/24 16:07, Menglong Dong wrote: >> diff --git a/net/core/lwt_bpf.c b/net/core/lwt_bpf.c >> index e0ca24a58810..a4652f2a103a 100644 >> --- a/net/core/lwt_bpf.c >> +++ b/net/core/lwt_bpf.c >> @@ -98,6 +98,7 @@ static int bpf_lwt_input_reroute(struct sk_buff *skb) >> skb_dst_drop(skb); >> err = ip_route_input_noref(skb, iph->daddr, iph->saddr, >> ip4h_dscp(iph), dev); >> + err = err ? -EINVAL : 0; > > Please introduce and use a drop_reason variable here instead of 'err', > to make it clear the type conversion. Or even better, collapse the 2 statements: err = ip_route_input_noref(skb, iph->daddr, iph->saddr, ip4h_dscp(iph), dev) ? -EINVAL : 0; There are other places which could use a similar changes. Thanks, Paolo