26 static inline __always_inline int nat64(struct __sk_buff* skb,  in nat64()  argument
32     if (is_ethernet && (skb->pkt_type != PACKET_HOST)) return TC_ACT_PIPE;  in nat64()
35     if (skb->protocol != htons(ETH_P_IPV6)) return TC_ACT_PIPE;  in nat64()
42     try_make_writable(skb, l2_header_size + sizeof(struct ipv6hdr));  in nat64()
44     void* data = (void*)(long)skb->data;  in nat64()
45     const void* data_end = (void*)(long)skb->data_end;  in nat64()
68             .iif = skb->ifindex,  in nat64()
123             skb->mark = CLAT_MARK;  in nat64()
169     if (bpf_skb_change_proto(skb, htons(ETH_P_IP), 0)) {  in nat64()
173         skb->mark = CLAT_MARK;  in nat64()
192     bpf_csum_update(skb, sum6);  in nat64()
210         if (bpf_skb_adjust_room(skb, -(__s32)sizeof(struct frag_hdr), BPF_ADJ_ROOM_NET, /*flags*/0))  in nat64()
214     try_make_writable(skb, l2_header_size + sizeof(struct iphdr));  in nat64()
217     data = (void*)(long)skb->data;  in nat64()
218     data_end = (void*)(long)skb->data_end;  in nat64()
239     __sync_fetch_and_add(&v->bytes, skb->len - l2_header_size);  in nat64()
249 (struct __sk_buff* skb) {
250     return nat64(skb, ETHER, KVER_4_14);
254 (struct __sk_buff* skb) {
255     return nat64(skb, ETHER, KVER_NONE);
259 (struct __sk_buff* skb) {
260     return nat64(skb, RAWIP, KVER_4_14);
264 (struct __sk_buff* skb) {
265     return nat64(skb, RAWIP, KVER_NONE);
271 (struct __sk_buff* skb) {
273     if (skb->protocol != htons(ETH_P_IP)) return TC_ACT_PIPE;
276     try_make_writable(skb, sizeof(struct iphdr));
278     void* data = (void*)(long)skb->data;
279     const void* data_end = (void*)(long)skb->data_end;
333             .iif = skb->ifindex,
371     if (bpf_skb_change_proto(skb, htons(ETH_P_IPV6), 0)) return TC_ACT_PIPE;
382     bpf_csum_update(skb, sum6);
385     data = (void*)(long)skb->data;
386     data_end = (void*)(long)skb->data_end;
397     __sync_fetch_and_add(&v->bytes, skb->len);