71 			   const struct sk_buff *skb)  in ovs_flow_stats_update()  argument
75 	int len = skb->len + (skb_vlan_tag_present(skb) ? VLAN_HLEN : 0);  in ovs_flow_stats_update()
182 static int check_header(struct sk_buff *skb, int len)  in check_header()  argument
184 	if (unlikely(skb->len < len))  in check_header()
186 	if (unlikely(!pskb_may_pull(skb, len)))  in check_header()
191 static bool arphdr_ok(struct sk_buff *skb)  in arphdr_ok()  argument
193 	return pskb_may_pull(skb, skb_network_offset(skb) +  in arphdr_ok()
197 static int check_iphdr(struct sk_buff *skb)  in check_iphdr()  argument
199 	unsigned int nh_ofs = skb_network_offset(skb);  in check_iphdr()
203 	err = check_header(skb, nh_ofs + sizeof(struct iphdr));  in check_iphdr()
207 	ip_len = ip_hdrlen(skb);  in check_iphdr()
209 		     skb->len < nh_ofs + ip_len))  in check_iphdr()
212 	skb_set_transport_header(skb, nh_ofs + ip_len);  in check_iphdr()
216 static bool tcphdr_ok(struct sk_buff *skb)  in tcphdr_ok()  argument
218 	int th_ofs = skb_transport_offset(skb);  in tcphdr_ok()
221 	if (unlikely(!pskb_may_pull(skb, th_ofs + sizeof(struct tcphdr))))  in tcphdr_ok()
224 	tcp_len = tcp_hdrlen(skb);  in tcphdr_ok()
226 		     skb->len < th_ofs + tcp_len))  in tcphdr_ok()
232 static bool udphdr_ok(struct sk_buff *skb)  in udphdr_ok()  argument
234 	return pskb_may_pull(skb, skb_transport_offset(skb) +  in udphdr_ok()
238 static bool sctphdr_ok(struct sk_buff *skb)  in sctphdr_ok()  argument
240 	return pskb_may_pull(skb, skb_transport_offset(skb) +  in sctphdr_ok()
244 static bool icmphdr_ok(struct sk_buff *skb)  in icmphdr_ok()  argument
246 	return pskb_may_pull(skb, skb_transport_offset(skb) +  in icmphdr_ok()
250 static int parse_ipv6hdr(struct sk_buff *skb, struct sw_flow_key *key)  in parse_ipv6hdr()  argument
252 	unsigned int nh_ofs = skb_network_offset(skb);  in parse_ipv6hdr()
260 	err = check_header(skb, nh_ofs + sizeof(*nh));  in parse_ipv6hdr()
264 	nh = ipv6_hdr(skb);  in parse_ipv6hdr()
266 	payload_ofs = (u8 *)(nh + 1) - skb->data;  in parse_ipv6hdr()
275 	payload_ofs = ipv6_skip_exthdr(skb, payload_ofs, &nexthdr, &frag_off);  in parse_ipv6hdr()
294 	skb_set_transport_header(skb, nh_ofs + nh_len);  in parse_ipv6hdr()
299 static bool icmp6hdr_ok(struct sk_buff *skb)  in icmp6hdr_ok()  argument
301 	return pskb_may_pull(skb, skb_transport_offset(skb) +  in icmp6hdr_ok()
305 static int parse_vlan(struct sk_buff *skb, struct sw_flow_key *key)  in parse_vlan()  argument
313 	if (unlikely(skb->len < sizeof(struct qtag_prefix) + sizeof(__be16)))  in parse_vlan()
316 	if (unlikely(!pskb_may_pull(skb, sizeof(struct qtag_prefix) +  in parse_vlan()
320 	qp = (struct qtag_prefix *) skb->data;  in parse_vlan()
322 	__skb_pull(skb, sizeof(struct qtag_prefix));  in parse_vlan()
327 static __be16 parse_ethertype(struct sk_buff *skb)  in parse_ethertype()  argument
339 	proto = *(__be16 *) skb->data;  in parse_ethertype()
340 	__skb_pull(skb, sizeof(__be16));  in parse_ethertype()
345 	if (skb->len < sizeof(struct llc_snap_hdr))  in parse_ethertype()
348 	if (unlikely(!pskb_may_pull(skb, sizeof(struct llc_snap_hdr))))  in parse_ethertype()
351 	llc = (struct llc_snap_hdr *) skb->data;  in parse_ethertype()
357 	__skb_pull(skb, sizeof(struct llc_snap_hdr));  in parse_ethertype()
365 static int parse_icmpv6(struct sk_buff *skb, struct sw_flow_key *key,  in parse_icmpv6()  argument
368 	struct icmp6hdr *icmp = icmp6_hdr(skb);  in parse_icmpv6()
380 		int icmp_len = skb->len - skb_transport_offset(skb);  in parse_icmpv6()
390 		if (unlikely(skb_linearize(skb)))  in parse_icmpv6()
393 		nd = (struct nd_msg *)skb_transport_header(skb);  in parse_icmpv6()
461 static int key_extract(struct sk_buff *skb, struct sw_flow_key *key)  in key_extract()  argument
469 	skb_reset_mac_header(skb);  in key_extract()
474 	eth = eth_hdr(skb);  in key_extract()
478 	__skb_pull(skb, 2 * ETH_ALEN);  in key_extract()
484 	if (skb_vlan_tag_present(skb))  in key_extract()
485 		key->eth.tci = htons(skb->vlan_tci);  in key_extract()
487 		if (unlikely(parse_vlan(skb, key)))  in key_extract()
490 	key->eth.type = parse_ethertype(skb);  in key_extract()
494 	skb_reset_network_header(skb);  in key_extract()
495 	skb_reset_mac_len(skb);  in key_extract()
496 	__skb_push(skb, skb->data - skb_mac_header(skb));  in key_extract()
503 		error = check_iphdr(skb);  in key_extract()
508 				skb->transport_header = skb->network_header;  in key_extract()
514 		nh = ip_hdr(skb);  in key_extract()
528 			skb_shinfo(skb)->gso_type & SKB_GSO_UDP)  in key_extract()
535 			if (tcphdr_ok(skb)) {  in key_extract()
536 				struct tcphdr *tcp = tcp_hdr(skb);  in key_extract()
545 			if (udphdr_ok(skb)) {  in key_extract()
546 				struct udphdr *udp = udp_hdr(skb);  in key_extract()
553 			if (sctphdr_ok(skb)) {  in key_extract()
554 				struct sctphdr *sctp = sctp_hdr(skb);  in key_extract()
561 			if (icmphdr_ok(skb)) {  in key_extract()
562 				struct icmphdr *icmp = icmp_hdr(skb);  in key_extract()
576 		bool arp_available = arphdr_ok(skb);  in key_extract()
578 		arp = (struct arp_eth_header *)skb_network_header(skb);  in key_extract()
612 			error = check_header(skb, skb->mac_len + stack_len);  in key_extract()
616 			memcpy(&lse, skb_network_header(skb), MPLS_HLEN);  in key_extract()
621 			skb_set_network_header(skb, skb->mac_len + stack_len);  in key_extract()
630 		nh_len = parse_ipv6hdr(skb, key);  in key_extract()
638 				skb->transport_header = skb->network_header;  in key_extract()
649 		if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP)  in key_extract()
654 			if (tcphdr_ok(skb)) {  in key_extract()
655 				struct tcphdr *tcp = tcp_hdr(skb);  in key_extract()
663 			if (udphdr_ok(skb)) {  in key_extract()
664 				struct udphdr *udp = udp_hdr(skb);  in key_extract()
671 			if (sctphdr_ok(skb)) {  in key_extract()
672 				struct sctphdr *sctp = sctp_hdr(skb);  in key_extract()
679 			if (icmp6hdr_ok(skb)) {  in key_extract()
680 				error = parse_icmpv6(skb, key, nh_len);  in key_extract()
691 int ovs_flow_key_update(struct sk_buff *skb, struct sw_flow_key *key)  in ovs_flow_key_update()  argument
693 	return key_extract(skb, key);  in ovs_flow_key_update()
697 			 struct sk_buff *skb, struct sw_flow_key *key)  in ovs_flow_key_extract()  argument
721 	key->phy.priority = skb->priority;  in ovs_flow_key_extract()
722 	key->phy.in_port = OVS_CB(skb)->input_vport->port_no;  in ovs_flow_key_extract()
723 	key->phy.skb_mark = skb->mark;  in ovs_flow_key_extract()
724 	ovs_ct_fill_key(skb, key);  in ovs_flow_key_extract()
728 	return key_extract(skb, key);  in ovs_flow_key_extract()
732 				   struct sk_buff *skb,  in ovs_flow_key_extract_userspace()  argument
744 	return key_extract(skb, key);  in ovs_flow_key_extract_userspace()