diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index fd99fbd..480469b 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -1172,6 +1172,8 @@
 
 		skb->len += len;
 		skb->data_len += len;
+		skb->truesize += len;
+		atomic_add(len, &sk->sk_wmem_alloc);
 		offset += len;
 		size -= len;
 	}