change otg to host mode

hc

2024-05-11 04dd17822334871b23ea2862f7798fb0e0007777

 kernel/net/ipv4/ip_gre.c
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@@ -547,7 +547,7 @@
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 		truncate = true;
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 	}
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-	nhoff = skb_network_header(skb) - skb_mac_header(skb);
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+	nhoff = skb_network_offset(skb);
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 	if (skb->protocol == htons(ETH_P_IP) &&
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 	    (ntohs(ip_hdr(skb)->tot_len) > skb->len - nhoff))
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 		truncate = true;
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@@ -556,7 +556,7 @@
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 		int thoff;
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 		if (skb_transport_header_was_set(skb))
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-			thoff = skb_transport_header(skb) - skb_mac_header(skb);
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+			thoff = skb_transport_offset(skb);
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 		else
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 			thoff = nhoff + sizeof(struct ipv6hdr);
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 		if (ntohs(ipv6_hdr(skb)->payload_len) > skb->len - thoff)