1 // SPDX-License-Identifier: GPL-2.0
48 } v6_addr_map SEC(".maps");
55 } v4_addr_map SEC(".maps");
63 } v4_lpm_val_map SEC(".maps");
70 } tcp_port_map SEC(".maps");
77 } udp_port_map SEC(".maps");
79 enum ip_type { V4 = 1, V6 = 2 };  enumerator
144 	return lpm_val ? lpm_val->val : 0;  in filter_ipv4_lpm()
151 	if (info->type == V6) {  in filter_src_dst_ip()
152 		match_info->v6_src_ip_match =  in filter_src_dst_ip()
153 			filter_ipv6_addr(&info->ip.ipv6->saddr);  in filter_src_dst_ip()
154 	} else if (info->type == V4) {  in filter_src_dst_ip()
155 		match_info->v4_src_ip_match =  in filter_src_dst_ip()
156 			filter_ipv4_addr(info->ip.ipv4->saddr);  in filter_src_dst_ip()
157 		match_info->v4_src_prefix_match =  in filter_src_dst_ip()
158 			filter_ipv4_lpm(info->ip.ipv4->saddr);  in filter_src_dst_ip()
159 		match_info->v4_dst_prefix_match =  in filter_src_dst_ip()
160 			filter_ipv4_lpm(info->ip.ipv4->daddr);  in filter_src_dst_ip()
183 		info->flags |= TCP_SYN;  in set_tcp_flags()
185 		info->flags |= TCP_ACK;  in set_tcp_flags()
187 		info->flags |= TCP_RST;  in set_tcp_flags()
198 	info->sport = bpf_ntohs(tcp->source);  in parse_tcp()
199 	info->dport = bpf_ntohs(tcp->dest);  in parse_tcp()
213 	info->sport = bpf_ntohs(udp->source);  in parse_udp()
214 	info->dport = bpf_ntohs(udp->dest);  in parse_udp()
237 	if (info->proto == IPPROTO_TCP) {  in filter_transport_hdr()
241 		match_info->is_tcp = true;  in filter_transport_hdr()
242 		match_info->is_tcp_syn = (info->flags & TCP_SYN) > 0;  in filter_transport_hdr()
244 		match_info->tcp_dp_match = filter_tcp_port(info->dport);  in filter_transport_hdr()
245 	} else if (info->proto == IPPROTO_UDP) {  in filter_transport_hdr()
249 		match_info->udp_dp_match = filter_udp_port(info->dport);  in filter_transport_hdr()
250 		match_info->udp_sp_match = filter_udp_port(info->sport);  in filter_transport_hdr()
265 	if (udp->dest != bpf_htons(6666))  in parse_gue_v6()
268 	info->flags |= TUNNEL;  in parse_gue_v6()
279 		info->type = V6;  in parse_gue_v6()
280 		info->proto = inner_ip6h->nexthdr;  in parse_gue_v6()
281 		info->ip.ipv6 = inner_ip6h;  in parse_gue_v6()
282 		info->trans_hdr_offset += sizeof(struct ipv6hdr) + sizeof(struct udphdr);  in parse_gue_v6()
289 		info->type = V4;  in parse_gue_v6()
290 		info->proto = inner_ip4h->protocol;  in parse_gue_v6()
291 		info->ip.ipv4 = inner_ip4h;  in parse_gue_v6()
292 		info->trans_hdr_offset += sizeof(struct iphdr) + sizeof(struct udphdr);  in parse_gue_v6()
306 	info->proto = ip6h->nexthdr;  in parse_ipv6_gue()
307 	info->ip.ipv6 = ip6h;  in parse_ipv6_gue()
308 	info->type = V6;  in parse_ipv6_gue()
309 	info->trans_hdr_offset = sizeof(struct ethhdr) + sizeof(struct ipv6hdr);  in parse_ipv6_gue()
311 	if (info->proto == IPPROTO_UDP)  in parse_ipv6_gue()
317 SEC("xdp")
320 	void *data_end = (void *)(long)(ctx->data_end);  in edgewall()
321 	void *data = (void *)(long)(ctx->data);  in edgewall()
333 	proto = eth->h_proto;  in edgewall()
364 char LICENSE[] SEC("license") = "GPL";