121 static void *ipvlan_get_L3_hdr(struct sk_buff *skb, int *type)  in ipvlan_get_L3_hdr()  argument
125 	switch (skb->protocol) {  in ipvlan_get_L3_hdr()
129 		if (unlikely(!pskb_may_pull(skb, sizeof(*arph))))  in ipvlan_get_L3_hdr()
132 		arph = arp_hdr(skb);  in ipvlan_get_L3_hdr()
141 		if (unlikely(!pskb_may_pull(skb, sizeof(*ip4h))))  in ipvlan_get_L3_hdr()
144 		ip4h = ip_hdr(skb);  in ipvlan_get_L3_hdr()
148 		if (skb->len < pktlen || pktlen < (ip4h->ihl * 4))  in ipvlan_get_L3_hdr()
158 		if (unlikely(!pskb_may_pull(skb, sizeof(*ip6h))))  in ipvlan_get_L3_hdr()
161 		ip6h = ipv6_hdr(skb);  in ipvlan_get_L3_hdr()
195 	struct sk_buff *skb, *nskb;  in ipvlan_process_multicast()  local
209 	while ((skb = __skb_dequeue(&list)) != NULL) {  in ipvlan_process_multicast()
210 		ethh = eth_hdr(skb);  in ipvlan_process_multicast()
222 			if (hlocal && (ipvlan->dev == skb->dev)) {  in ipvlan_process_multicast()
230 			len = skb->len + ETH_HLEN;  in ipvlan_process_multicast()
231 			nskb = skb_clone(skb, GFP_ATOMIC);  in ipvlan_process_multicast()
248 			skb->dev = port->dev;  in ipvlan_process_multicast()
249 			skb->pkt_type = pkt_type;  in ipvlan_process_multicast()
250 			dev_queue_xmit(skb);  in ipvlan_process_multicast()
252 			kfree_skb(skb);  in ipvlan_process_multicast()
265 	struct sk_buff *skb = *pskb;  in ipvlan_rcv_frame()  local
267 	len = skb->len + ETH_HLEN;  in ipvlan_rcv_frame()
269 		kfree_skb(skb);  in ipvlan_rcv_frame()
273 	skb = skb_share_check(skb, GFP_ATOMIC);  in ipvlan_rcv_frame()
274 	if (!skb)  in ipvlan_rcv_frame()
277 	*pskb = skb;  in ipvlan_rcv_frame()
278 	skb->dev = dev;  in ipvlan_rcv_frame()
279 	skb->pkt_type = PACKET_HOST;  in ipvlan_rcv_frame()
282 		if (dev_forward_skb(ipvlan->dev, skb) == NET_RX_SUCCESS)  in ipvlan_rcv_frame()
345 static int ipvlan_process_v4_outbound(struct sk_buff *skb)  in ipvlan_process_v4_outbound()  argument
347 	const struct iphdr *ip4h = ip_hdr(skb);  in ipvlan_process_v4_outbound()
348 	struct net_device *dev = skb->dev;  in ipvlan_process_v4_outbound()
368 	skb_dst_drop(skb);  in ipvlan_process_v4_outbound()
369 	skb_dst_set(skb, &rt->dst);  in ipvlan_process_v4_outbound()
370 	err = ip_local_out(net, skb->sk, skb);  in ipvlan_process_v4_outbound()
378 	kfree_skb(skb);  in ipvlan_process_v4_outbound()
383 static int ipvlan_process_v6_outbound(struct sk_buff *skb)  in ipvlan_process_v6_outbound()  argument
385 	const struct ipv6hdr *ip6h = ipv6_hdr(skb);  in ipvlan_process_v6_outbound()
386 	struct net_device *dev = skb->dev;  in ipvlan_process_v6_outbound()
396 		.flowi6_mark = skb->mark,  in ipvlan_process_v6_outbound()
406 	skb_dst_drop(skb);  in ipvlan_process_v6_outbound()
407 	skb_dst_set(skb, dst);  in ipvlan_process_v6_outbound()
408 	err = ip6_local_out(net, skb->sk, skb);  in ipvlan_process_v6_outbound()
416 	kfree_skb(skb);  in ipvlan_process_v6_outbound()
421 static int ipvlan_process_outbound(struct sk_buff *skb,  in ipvlan_process_outbound()  argument
424 	struct ethhdr *ethh = eth_hdr(skb);  in ipvlan_process_outbound()
430 				    ntohs(skb->protocol));  in ipvlan_process_outbound()
431 		kfree_skb(skb);  in ipvlan_process_outbound()
439 	if (skb_mac_header_was_set(skb)) {  in ipvlan_process_outbound()
440 		skb_pull(skb, sizeof(*ethh));  in ipvlan_process_outbound()
441 		skb->mac_header = (typeof(skb->mac_header))~0U;  in ipvlan_process_outbound()
442 		skb_reset_network_header(skb);  in ipvlan_process_outbound()
445 	if (skb->protocol == htons(ETH_P_IPV6))  in ipvlan_process_outbound()
446 		ret = ipvlan_process_v6_outbound(skb);  in ipvlan_process_outbound()
447 	else if (skb->protocol == htons(ETH_P_IP))  in ipvlan_process_outbound()
448 		ret = ipvlan_process_v4_outbound(skb);  in ipvlan_process_outbound()
451 				    ntohs(skb->protocol));  in ipvlan_process_outbound()
452 		kfree_skb(skb);  in ipvlan_process_outbound()
459 				     struct sk_buff *skb)  in ipvlan_multicast_enqueue()  argument
461 	if (skb->protocol == htons(ETH_P_PAUSE)) {  in ipvlan_multicast_enqueue()
462 		kfree_skb(skb);  in ipvlan_multicast_enqueue()
468 		__skb_queue_tail(&port->backlog, skb);  in ipvlan_multicast_enqueue()
473 		atomic_long_inc(&skb->dev->rx_dropped);  in ipvlan_multicast_enqueue()
474 		kfree_skb(skb);  in ipvlan_multicast_enqueue()
478 static int ipvlan_xmit_mode_l3(struct sk_buff *skb, struct net_device *dev)  in ipvlan_xmit_mode_l3()  argument
485 	lyr3h = ipvlan_get_L3_hdr(skb, &addr_type);  in ipvlan_xmit_mode_l3()
491 		return ipvlan_rcv_frame(addr, &skb, true);  in ipvlan_xmit_mode_l3()
494 	skb->dev = ipvlan->phy_dev;  in ipvlan_xmit_mode_l3()
495 	return ipvlan_process_outbound(skb, ipvlan);  in ipvlan_xmit_mode_l3()
498 static int ipvlan_xmit_mode_l2(struct sk_buff *skb, struct net_device *dev)  in ipvlan_xmit_mode_l2()  argument
501 	struct ethhdr *eth = eth_hdr(skb);  in ipvlan_xmit_mode_l2()
507 		lyr3h = ipvlan_get_L3_hdr(skb, &addr_type);  in ipvlan_xmit_mode_l2()
511 				return ipvlan_rcv_frame(addr, &skb, true);  in ipvlan_xmit_mode_l2()
513 		skb = skb_share_check(skb, GFP_ATOMIC);  in ipvlan_xmit_mode_l2()
514 		if (!skb)  in ipvlan_xmit_mode_l2()
522 		return dev_forward_skb(ipvlan->phy_dev, skb);  in ipvlan_xmit_mode_l2()
525 		ipvlan_multicast_enqueue(ipvlan->port, skb);  in ipvlan_xmit_mode_l2()
529 	skb->dev = ipvlan->phy_dev;  in ipvlan_xmit_mode_l2()
530 	return dev_queue_xmit(skb);  in ipvlan_xmit_mode_l2()
533 int ipvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev)  in ipvlan_queue_xmit()  argument
541 	if (unlikely(!pskb_may_pull(skb, sizeof(struct ethhdr))))  in ipvlan_queue_xmit()
546 		return ipvlan_xmit_mode_l2(skb, dev);  in ipvlan_queue_xmit()
548 		return ipvlan_xmit_mode_l3(skb, dev);  in ipvlan_queue_xmit()
555 	kfree_skb(skb);  in ipvlan_queue_xmit()
559 static bool ipvlan_external_frame(struct sk_buff *skb, struct ipvl_port *port)  in ipvlan_external_frame()  argument
561 	struct ethhdr *eth = eth_hdr(skb);  in ipvlan_external_frame()
566 	if (ether_addr_equal(eth->h_source, skb->dev->dev_addr)) {  in ipvlan_external_frame()
567 		lyr3h = ipvlan_get_L3_hdr(skb, &addr_type);  in ipvlan_external_frame()
585 	struct sk_buff *skb = *pskb;  in ipvlan_handle_mode_l3()  local
588 	lyr3h = ipvlan_get_L3_hdr(skb, &addr_type);  in ipvlan_handle_mode_l3()
603 	struct sk_buff *skb = *pskb;  in ipvlan_handle_mode_l2()  local
604 	struct ethhdr *eth = eth_hdr(skb);  in ipvlan_handle_mode_l2()
610 		if (ipvlan_external_frame(skb, port)) {  in ipvlan_handle_mode_l2()
611 			struct sk_buff *nskb = skb_clone(skb, GFP_ATOMIC);  in ipvlan_handle_mode_l2()
625 		lyr3h = ipvlan_get_L3_hdr(skb, &addr_type);  in ipvlan_handle_mode_l2()
639 	struct sk_buff *skb = *pskb;  in ipvlan_handle_frame()  local
640 	struct ipvl_port *port = ipvlan_port_get_rcu(skb->dev);  in ipvlan_handle_frame()
655 	kfree_skb(skb);  in ipvlan_handle_frame()