287 	struct nshhdr *nh = (struct nshhdr *)buffer;  in push_nsh()  local
290 	err = nsh_hdr_from_nlattr(a, nh, NSH_HDR_MAX_LEN);  in push_nsh()
294 	err = nsh_push(skb, nh);  in push_nsh()
321 static void update_ip_l4_checksum(struct sk_buff *skb, struct iphdr *nh,  in update_ip_l4_checksum()  argument
326 	if (nh->frag_off & htons(IP_OFFSET))  in update_ip_l4_checksum()
329 	if (nh->protocol == IPPROTO_TCP) {  in update_ip_l4_checksum()
333 	} else if (nh->protocol == IPPROTO_UDP) {  in update_ip_l4_checksum()
347 static void set_ip_addr(struct sk_buff *skb, struct iphdr *nh,  in set_ip_addr()  argument
350 	update_ip_l4_checksum(skb, nh, *addr, new_addr);  in set_ip_addr()
351 	csum_replace4(&nh->check, *addr, new_addr);  in set_ip_addr()
405 static void set_ipv6_dsfield(struct sk_buff *skb, struct ipv6hdr *nh, u8 ipv6_tclass, u8 mask)  in set_ipv6_dsfield()  argument
407 	u8 old_ipv6_tclass = ipv6_get_dsfield(nh);  in set_ipv6_dsfield()
415 	ipv6_change_dsfield(nh, ~mask, ipv6_tclass);  in set_ipv6_dsfield()
418 static void set_ipv6_fl(struct sk_buff *skb, struct ipv6hdr *nh, u32 fl, u32 mask)  in set_ipv6_fl()  argument
422 	ofl = nh->flow_lbl[0] << 16 |  nh->flow_lbl[1] << 8 |  nh->flow_lbl[2];  in set_ipv6_fl()
426 	nh->flow_lbl[0] = (u8)(fl >> 16);  in set_ipv6_fl()
427 	nh->flow_lbl[1] = (u8)(fl >> 8);  in set_ipv6_fl()
428 	nh->flow_lbl[2] = (u8)fl;  in set_ipv6_fl()
434 static void set_ipv6_ttl(struct sk_buff *skb, struct ipv6hdr *nh, u8 new_ttl, u8 mask)  in set_ipv6_ttl()  argument
436 	new_ttl = OVS_MASKED(nh->hop_limit, new_ttl, mask);  in set_ipv6_ttl()
439 		csum_replace(&skb->csum, (__force __wsum)(nh->hop_limit << 8),  in set_ipv6_ttl()
441 	nh->hop_limit = new_ttl;  in set_ipv6_ttl()
444 static void set_ip_ttl(struct sk_buff *skb, struct iphdr *nh, u8 new_ttl,  in set_ip_ttl()  argument
447 	new_ttl = OVS_MASKED(nh->ttl, new_ttl, mask);  in set_ip_ttl()
449 	csum_replace2(&nh->check, htons(nh->ttl << 8), htons(new_ttl << 8));  in set_ip_ttl()
450 	nh->ttl = new_ttl;  in set_ip_ttl()
457 	struct iphdr *nh;  in set_ipv4()  local
466 	nh = ip_hdr(skb);  in set_ipv4()
473 		new_addr = OVS_MASKED(nh->saddr, key->ipv4_src, mask->ipv4_src);  in set_ipv4()
475 		if (unlikely(new_addr != nh->saddr)) {  in set_ipv4()
476 			set_ip_addr(skb, nh, &nh->saddr, new_addr);  in set_ipv4()
481 		new_addr = OVS_MASKED(nh->daddr, key->ipv4_dst, mask->ipv4_dst);  in set_ipv4()
483 		if (unlikely(new_addr != nh->daddr)) {  in set_ipv4()
484 			set_ip_addr(skb, nh, &nh->daddr, new_addr);  in set_ipv4()
489 		ipv4_change_dsfield(nh, ~mask->ipv4_tos, key->ipv4_tos);  in set_ipv4()
490 		flow_key->ip.tos = nh->tos;  in set_ipv4()
493 		set_ip_ttl(skb, nh, key->ipv4_ttl, mask->ipv4_ttl);  in set_ipv4()
494 		flow_key->ip.ttl = nh->ttl;  in set_ipv4()
509 	struct ipv6hdr *nh;  in set_ipv6()  local
517 	nh = ipv6_hdr(skb);  in set_ipv6()
524 		__be32 *saddr = (__be32 *)&nh->saddr;  in set_ipv6()
540 		__be32 *daddr = (__be32 *)&nh->daddr;  in set_ipv6()
546 			if (ipv6_ext_hdr(nh->nexthdr))  in set_ipv6()
559 		set_ipv6_dsfield(skb, nh, key->ipv6_tclass, mask->ipv6_tclass);  in set_ipv6()
560 		flow_key->ip.tos = ipv6_get_dsfield(nh);  in set_ipv6()
563 		set_ipv6_fl(skb, nh, ntohl(key->ipv6_label),  in set_ipv6()
566 		    *(__be32 *)nh & htonl(IPV6_FLOWINFO_FLOWLABEL);  in set_ipv6()
569 		set_ipv6_ttl(skb, nh, key->ipv6_hlimit, mask->ipv6_hlimit);  in set_ipv6()
570 		flow_key->ip.ttl = nh->hop_limit;  in set_ipv6()
578 	struct nshhdr *nh;  in set_nsh()  local
596 	nh = nsh_hdr(skb);  in set_nsh()
597 	length = nsh_hdr_len(nh);  in set_nsh()
605 	nh = nsh_hdr(skb);  in set_nsh()
606 	skb_postpull_rcsum(skb, nh, length);  in set_nsh()
607 	flags = nsh_get_flags(nh);  in set_nsh()
610 	ttl = nsh_get_ttl(nh);  in set_nsh()
613 	nsh_set_flags_and_ttl(nh, flags, ttl);  in set_nsh()
614 	nh->path_hdr = OVS_MASKED(nh->path_hdr, key.base.path_hdr,  in set_nsh()
616 	flow_key->nsh.base.path_hdr = nh->path_hdr;  in set_nsh()
617 	switch (nh->mdtype) {  in set_nsh()
620 			nh->md1.context[i] =  in set_nsh()
621 			    OVS_MASKED(nh->md1.context[i], key.context[i],  in set_nsh()
624 		memcpy(flow_key->nsh.context, nh->md1.context,  in set_nsh()
625 		       sizeof(nh->md1.context));  in set_nsh()
634 	skb_postpush_rcsum(skb, nh, length);  in set_nsh()
1241 		struct ipv6hdr *nh;  in execute_dec_ttl()  local
1244 					  sizeof(*nh));  in execute_dec_ttl()
1248 		nh = ipv6_hdr(skb);  in execute_dec_ttl()
1250 		if (nh->hop_limit <= 1)  in execute_dec_ttl()
1253 		key->ip.ttl = --nh->hop_limit;  in execute_dec_ttl()
1255 		struct iphdr *nh;  in execute_dec_ttl()  local
1259 					  sizeof(*nh));  in execute_dec_ttl()
1263 		nh = ip_hdr(skb);  in execute_dec_ttl()
1264 		if (nh->ttl <= 1)  in execute_dec_ttl()
1267 		old_ttl = nh->ttl--;  in execute_dec_ttl()
1268 		csum_replace2(&nh->check, htons(old_ttl << 8),  in execute_dec_ttl()
1269 			      htons(nh->ttl << 8));  in execute_dec_ttl()
1270 		key->ip.ttl = nh->ttl;  in execute_dec_ttl()