29 static int lowpan_give_skb_to_device(struct sk_buff *skb)  in lowpan_give_skb_to_device()  argument
31 	skb->protocol = htons(ETH_P_IPV6);  in lowpan_give_skb_to_device()
32 	skb->dev->stats.rx_packets++;  in lowpan_give_skb_to_device()
33 	skb->dev->stats.rx_bytes += skb->len;  in lowpan_give_skb_to_device()
35 	return netif_rx(skb);  in lowpan_give_skb_to_device()
38 static int lowpan_rx_handlers_result(struct sk_buff *skb, lowpan_rx_result res)  in lowpan_rx_handlers_result()  argument
48 		kfree_skb(skb);  in lowpan_rx_handlers_result()
54 		return lowpan_give_skb_to_device(skb);  in lowpan_rx_handlers_result()
72 static lowpan_rx_result lowpan_rx_h_frag(struct sk_buff *skb)  in lowpan_rx_h_frag()  argument
76 	if (!(lowpan_is_frag1(*skb_network_header(skb)) ||  in lowpan_rx_h_frag()
77 	      lowpan_is_fragn(*skb_network_header(skb))))  in lowpan_rx_h_frag()
80 	ret = lowpan_frag_rcv(skb, *skb_network_header(skb) &  in lowpan_rx_h_frag()
91 int lowpan_iphc_decompress(struct sk_buff *skb)  in lowpan_iphc_decompress()  argument
95 	if (ieee802154_hdr_peek_addrs(skb, &hdr) < 0)  in lowpan_iphc_decompress()
98 	return lowpan_header_decompress(skb, skb->dev, &hdr.dest, &hdr.source);  in lowpan_iphc_decompress()
101 static lowpan_rx_result lowpan_rx_h_iphc(struct sk_buff *skb)  in lowpan_rx_h_iphc()  argument
105 	if (!lowpan_is_iphc(*skb_network_header(skb)))  in lowpan_rx_h_iphc()
111 	lowpan_802154_cb(skb)->d_size = 0;  in lowpan_rx_h_iphc()
113 	ret = lowpan_iphc_decompress(skb);  in lowpan_rx_h_iphc()
120 lowpan_rx_result lowpan_rx_h_ipv6(struct sk_buff *skb)  in lowpan_rx_h_ipv6()  argument
122 	if (!lowpan_is_ipv6(*skb_network_header(skb)))  in lowpan_rx_h_ipv6()
126 	skb_pull(skb, 1);  in lowpan_rx_h_ipv6()
135 static lowpan_rx_result lowpan_rx_h_esc(struct sk_buff *skb)  in lowpan_rx_h_esc()  argument
137 	if (!lowpan_is_esc(*skb_network_header(skb)))  in lowpan_rx_h_esc()
140 	net_warn_ratelimited("%s: %s\n", skb->dev->name,  in lowpan_rx_h_esc()
151 static lowpan_rx_result lowpan_rx_h_hc1(struct sk_buff *skb)  in lowpan_rx_h_hc1()  argument
153 	if (!lowpan_is_hc1(*skb_network_header(skb)))  in lowpan_rx_h_hc1()
156 	net_warn_ratelimited("%s: %s\n", skb->dev->name,  in lowpan_rx_h_hc1()
167 static lowpan_rx_result lowpan_rx_h_dff(struct sk_buff *skb)  in lowpan_rx_h_dff()  argument
169 	if (!lowpan_is_dff(*skb_network_header(skb)))  in lowpan_rx_h_dff()
172 	net_warn_ratelimited("%s: %s\n", skb->dev->name,  in lowpan_rx_h_dff()
183 static lowpan_rx_result lowpan_rx_h_bc0(struct sk_buff *skb)  in lowpan_rx_h_bc0()  argument
185 	if (!lowpan_is_bc0(*skb_network_header(skb)))  in lowpan_rx_h_bc0()
188 	net_warn_ratelimited("%s: %s\n", skb->dev->name,  in lowpan_rx_h_bc0()
199 static lowpan_rx_result lowpan_rx_h_mesh(struct sk_buff *skb)  in lowpan_rx_h_mesh()  argument
201 	if (!lowpan_is_mesh(*skb_network_header(skb)))  in lowpan_rx_h_mesh()
204 	net_warn_ratelimited("%s: %s\n", skb->dev->name,  in lowpan_rx_h_mesh()
210 static int lowpan_invoke_rx_handlers(struct sk_buff *skb)  in lowpan_invoke_rx_handlers()  argument
216 		res = rxh(skb);	\  in lowpan_invoke_rx_handlers()
232 	return lowpan_rx_handlers_result(skb, res);  in lowpan_invoke_rx_handlers()
259 static inline bool lowpan_rx_h_check(struct sk_buff *skb)  in lowpan_rx_h_check()  argument
261 	__le16 fc = ieee802154_get_fc_from_skb(skb);  in lowpan_rx_h_check()
269 	if (unlikely(!skb->len))  in lowpan_rx_h_check()
272 	if (lowpan_is_nalp(*skb_network_header(skb)) ||  in lowpan_rx_h_check()
273 	    lowpan_is_reserved(*skb_network_header(skb)))  in lowpan_rx_h_check()
279 static int lowpan_rcv(struct sk_buff *skb, struct net_device *wdev,  in lowpan_rcv()  argument
285 	    skb->pkt_type == PACKET_OTHERHOST ||  in lowpan_rcv()
286 	    !lowpan_rx_h_check(skb))  in lowpan_rcv()
294 	skb = skb_share_check(skb, GFP_ATOMIC);  in lowpan_rcv()
295 	if (!skb)  in lowpan_rcv()
297 	skb->dev = ldev;  in lowpan_rcv()
303 	if (lowpan_is_frag1(*skb_network_header(skb)) ||  in lowpan_rcv()
304 	    lowpan_is_iphc(*skb_network_header(skb))) {  in lowpan_rcv()
305 		skb = skb_unshare(skb, GFP_ATOMIC);  in lowpan_rcv()
306 		if (!skb)  in lowpan_rcv()
310 	return lowpan_invoke_rx_handlers(skb);  in lowpan_rcv()
313 	kfree_skb(skb);  in lowpan_rcv()