diff --git a/net/core/filter.c b/net/core/filter.c
index 183e281a4820..e4c48941d83e 100755
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -2279,19 +2279,14 @@ static int bpf_skb_net_shrink(struct sk_buff *skb, u32 len_diff)
 	return 0;
 }
 
-static u32 __bpf_skb_max_len(const struct sk_buff *skb)
-{
-	if (skb_at_tc_ingress(skb) || !skb->dev)
-		return SKB_MAX_ALLOC;
-	return skb->dev->mtu + skb->dev->hard_header_len;
-}
+#define BPF_SKB_MAX_LEN SKB_MAX_ALLOC
 
 static int bpf_skb_adjust_net(struct sk_buff *skb, s32 len_diff)
 {
 	bool trans_same = skb->transport_header == skb->network_header;
 	u32 len_cur, len_diff_abs = abs(len_diff);
 	u32 len_min = bpf_skb_net_base_len(skb);
-	u32 len_max = __bpf_skb_max_len(skb);
+	u32 len_max = BPF_SKB_MAX_LEN;
 	__be16 proto = skb->protocol;
 	bool shrink = len_diff < 0;
 	int ret;
@@ -2370,7 +2365,7 @@ static int bpf_skb_trim_rcsum(struct sk_buff *skb, unsigned int new_len)
 BPF_CALL_3(bpf_skb_change_tail, struct sk_buff *, skb, u32, new_len,
 	   u64, flags)
 {
-	u32 max_len = __bpf_skb_max_len(skb);
+	u32 max_len = BPF_SKB_MAX_LEN;
 	u32 min_len = __bpf_skb_min_len(skb);
 	int ret;
 
@@ -2421,7 +2416,7 @@ static const struct bpf_func_proto bpf_skb_change_tail_proto = {
 BPF_CALL_3(bpf_skb_change_head, struct sk_buff *, skb, u32, head_room,
 	   u64, flags)
 {
-	u32 max_len = __bpf_skb_max_len(skb);
+	u32 max_len = BPF_SKB_MAX_LEN;
 	u32 new_len = skb->len + head_room;
 	int ret;