39 static inline void parse_eth_proto(struct __sk_buff *skb, u32 proto)  in parse_eth_proto()  argument
44 		bpf_tail_call(skb, &jmp_table, PARSE_VLAN);  in parse_eth_proto()
48 		bpf_tail_call(skb, &jmp_table, PARSE_MPLS);  in parse_eth_proto()
51 		bpf_tail_call(skb, &jmp_table, PARSE_IP);  in parse_eth_proto()
54 		bpf_tail_call(skb, &jmp_table, PARSE_IPV6);  in parse_eth_proto()
122 static void update_stats(struct __sk_buff *skb, struct globals *g)  in update_stats()  argument
130 		__sync_fetch_and_add(&value->bytes, skb->len);  in update_stats()
132 		struct pair val = {1, skb->len};  in update_stats()
138 static __always_inline void parse_ip_proto(struct __sk_buff *skb,  in parse_ip_proto()  argument
141 	__u32 nhoff = skb->cb[0];  in parse_ip_proto()
151 		__u32 gre_flags = load_half(skb,  in parse_ip_proto()
153 		__u32 gre_proto = load_half(skb,  in parse_ip_proto()
167 		skb->cb[0] = nhoff;  in parse_ip_proto()
168 		parse_eth_proto(skb, gre_proto);  in parse_ip_proto()
172 		parse_eth_proto(skb, ETH_P_IP);  in parse_ip_proto()
175 		parse_eth_proto(skb, ETH_P_IPV6);  in parse_ip_proto()
179 		g->flow.ports = load_word(skb, nhoff);  in parse_ip_proto()
182 		update_stats(skb, g);  in parse_ip_proto()
189 PROG(PARSE_IP)(struct __sk_buff *skb)  in PROG()
197 	nhoff = skb->cb[0];  in PROG()
199 	if (unlikely(ip_is_fragment(skb, nhoff)))  in PROG()
202 	ip_proto = load_byte(skb, nhoff + offsetof(struct iphdr, protocol));  in PROG()
205 		g->flow.src = load_word(skb, nhoff + offsetof(struct iphdr, saddr));  in PROG()
206 		g->flow.dst = load_word(skb, nhoff + offsetof(struct iphdr, daddr));  in PROG()
209 	verlen = load_byte(skb, nhoff + 0/*offsetof(struct iphdr, ihl)*/);  in PROG()
212 	skb->cb[0] = nhoff;  in PROG()
213 	parse_ip_proto(skb, g, ip_proto);  in PROG()
217 PROG(PARSE_IPV6)(struct __sk_buff *skb)  in PROG()
225 	nhoff = skb->cb[0];  in PROG()
227 	ip_proto = load_byte(skb,  in PROG()
229 	g->flow.src = ipv6_addr_hash(skb,  in PROG()
231 	g->flow.dst = ipv6_addr_hash(skb,  in PROG()
235 	skb->cb[0] = nhoff;  in PROG()
236 	parse_ip_proto(skb, g, ip_proto);  in PROG()
240 PROG(PARSE_VLAN)(struct __sk_buff *skb)  in PROG()
244 	nhoff = skb->cb[0];  in PROG()
246 	proto = load_half(skb, nhoff + offsetof(struct vlan_hdr,  in PROG()
249 	skb->cb[0] = nhoff;  in PROG()
251 	parse_eth_proto(skb, proto);  in PROG()
256 PROG(PARSE_MPLS)(struct __sk_buff *skb)  in PROG()
260 	nhoff = skb->cb[0];  in PROG()
262 	label = load_word(skb, nhoff);  in PROG()
264 	skb->cb[0] = nhoff;  in PROG()
267 		__u8 verlen = load_byte(skb, nhoff);  in PROG()
269 			parse_eth_proto(skb, ETH_P_IP);  in PROG()
271 			parse_eth_proto(skb, ETH_P_IPV6);  in PROG()
273 		parse_eth_proto(skb, ETH_P_MPLS_UC);  in PROG()
280 int main_prog(struct __sk_buff *skb)  in main_prog()  argument
283 	__u32 proto = load_half(skb, 12);  in main_prog()
285 	skb->cb[0] = nhoff;  in main_prog()
286 	parse_eth_proto(skb, proto);  in main_prog()