IP_CSUM_OFF        27 samples/bpf/tcbpf1_kern.c 	bpf_l3_csum_replace(skb, IP_CSUM_OFF, htons(old_tos), htons(new_tos), 2);
IP_CSUM_OFF        41 samples/bpf/tcbpf1_kern.c 	bpf_l3_csum_replace(skb, IP_CSUM_OFF, old_ip, new_ip, sizeof(new_ip));
IP_CSUM_OFF       128 samples/bpf/test_lwt_bpf.c 	ret = bpf_l3_csum_replace(skb, IP_CSUM_OFF, old_ip, new_ip, sizeof(new_ip));