bpf/progs/xdp_synproxy_kern.c

436 	struct bpf_sock_tuple tup = {};
447 		tup.ipv4.saddr = hdr->ipv4->saddr;
448 		tup.ipv4.daddr = hdr->ipv4->daddr;
449 		tup.ipv4.sport = hdr->tcp->source;
450 		tup.ipv4.dport = hdr->tcp->dest;
451 		tup_size = sizeof(tup.ipv4);
453 		__builtin_memcpy(tup.ipv6.saddr, &hdr->ipv6->saddr, sizeof(tup.ipv6.saddr));
454 		__builtin_memcpy(tup.ipv6.daddr, &hdr->ipv6->daddr, sizeof(tup.ipv6.daddr));
455 		tup.ipv6.sport = hdr->tcp->source;
456 		tup.ipv6.dport = hdr->tcp->dest;
457 		tup_size = sizeof(tup.ipv6);
465 		ct = bpf_xdp_ct_lookup(ctx, &tup, tup_size, &ct_lookup_opts, sizeof(ct_lookup_opts));
467 		ct = bpf_skb_ct_lookup(ctx, &tup, tup_size, &ct_lookup_opts, sizeof(ct_lookup_opts));