22 static void rmnet_set_skb_proto(struct sk_buff *skb)  in rmnet_set_skb_proto()  argument
24 	switch (skb->data[0] & 0xF0) {  in rmnet_set_skb_proto()
26 		skb->protocol = htons(ETH_P_IP);  in rmnet_set_skb_proto()
29 		skb->protocol = htons(ETH_P_IPV6);  in rmnet_set_skb_proto()
32 		skb->protocol = htons(ETH_P_MAP);  in rmnet_set_skb_proto()
40 rmnet_deliver_skb(struct sk_buff *skb)  in rmnet_deliver_skb()  argument
42 	struct rmnet_priv *priv = netdev_priv(skb->dev);  in rmnet_deliver_skb()
44 	skb_reset_transport_header(skb);  in rmnet_deliver_skb()
45 	skb_reset_network_header(skb);  in rmnet_deliver_skb()
46 	rmnet_vnd_rx_fixup(skb, skb->dev);  in rmnet_deliver_skb()
48 	skb->pkt_type = PACKET_HOST;  in rmnet_deliver_skb()
49 	skb_set_mac_header(skb, 0);  in rmnet_deliver_skb()
50 	gro_cells_receive(&priv->gro_cells, skb);  in rmnet_deliver_skb()
56 __rmnet_map_ingress_handler(struct sk_buff *skb,  in __rmnet_map_ingress_handler()  argument
59 	struct rmnet_map_header *map_header = (void *)skb->data;  in __rmnet_map_ingress_handler()
67 			return rmnet_map_command(skb, port);  in __rmnet_map_ingress_handler()
83 	skb->dev = ep->egress_dev;  in __rmnet_map_ingress_handler()
87 		if (rmnet_map_process_next_hdr_packet(skb, len))  in __rmnet_map_ingress_handler()
89 		skb_pull(skb, sizeof(*map_header));  in __rmnet_map_ingress_handler()
90 		rmnet_set_skb_proto(skb);  in __rmnet_map_ingress_handler()
93 		skb_pull(skb, sizeof(*map_header));  in __rmnet_map_ingress_handler()
94 		rmnet_set_skb_proto(skb);  in __rmnet_map_ingress_handler()
96 		    !rmnet_map_checksum_downlink_packet(skb, len + pad))  in __rmnet_map_ingress_handler()
97 			skb->ip_summed = CHECKSUM_UNNECESSARY;  in __rmnet_map_ingress_handler()
100 	skb_trim(skb, len);  in __rmnet_map_ingress_handler()
101 	rmnet_deliver_skb(skb);  in __rmnet_map_ingress_handler()
105 	kfree_skb(skb);  in __rmnet_map_ingress_handler()
109 rmnet_map_ingress_handler(struct sk_buff *skb,  in rmnet_map_ingress_handler()  argument
114 	if (skb->dev->type == ARPHRD_ETHER) {  in rmnet_map_ingress_handler()
115 		if (pskb_expand_head(skb, ETH_HLEN, 0, GFP_ATOMIC)) {  in rmnet_map_ingress_handler()
116 			kfree_skb(skb);  in rmnet_map_ingress_handler()
120 		skb_push(skb, ETH_HLEN);  in rmnet_map_ingress_handler()
124 		while ((skbn = rmnet_map_deaggregate(skb, port)) != NULL)  in rmnet_map_ingress_handler()
127 		consume_skb(skb);  in rmnet_map_ingress_handler()
129 		__rmnet_map_ingress_handler(skb, port);  in rmnet_map_ingress_handler()
133 static int rmnet_map_egress_handler(struct sk_buff *skb,  in rmnet_map_egress_handler()  argument
153 	if (skb_cow_head(skb, required_headroom) < 0)  in rmnet_map_egress_handler()
157 		rmnet_map_checksum_uplink_packet(skb, port, orig_dev,  in rmnet_map_egress_handler()
160 	map_header = rmnet_map_add_map_header(skb, additional_header_len,  in rmnet_map_egress_handler()
170 		len = rmnet_map_tx_aggregate(skb, port, orig_dev);  in rmnet_map_egress_handler()
178 	skb->protocol = htons(ETH_P_MAP);  in rmnet_map_egress_handler()
183 rmnet_bridge_handler(struct sk_buff *skb, struct net_device *bridge_dev)  in rmnet_bridge_handler()  argument
185 	if (skb_mac_header_was_set(skb))  in rmnet_bridge_handler()
186 		skb_push(skb, skb->mac_len);  in rmnet_bridge_handler()
189 		skb->dev = bridge_dev;  in rmnet_bridge_handler()
190 		dev_queue_xmit(skb);  in rmnet_bridge_handler()
202 	struct sk_buff *skb = *pskb;  in rmnet_rx_handler()  local
206 	if (!skb)  in rmnet_rx_handler()
209 	if (skb_linearize(skb)) {  in rmnet_rx_handler()
210 		kfree_skb(skb);  in rmnet_rx_handler()
214 	if (skb->pkt_type == PACKET_LOOPBACK)  in rmnet_rx_handler()
217 	dev = skb->dev;  in rmnet_rx_handler()
220 		dev_core_stats_rx_nohandler_inc(skb->dev);  in rmnet_rx_handler()
221 		kfree_skb(skb);  in rmnet_rx_handler()
227 		rmnet_map_ingress_handler(skb, port);  in rmnet_rx_handler()
230 		rmnet_bridge_handler(skb, port->bridge_ep);  in rmnet_rx_handler()
242 void rmnet_egress_handler(struct sk_buff *skb)  in rmnet_egress_handler()  argument
250 	sk_pacing_shift_update(skb->sk, 8);  in rmnet_egress_handler()
252 	orig_dev = skb->dev;  in rmnet_egress_handler()
254 	skb->dev = priv->real_dev;  in rmnet_egress_handler()
257 	port = rmnet_get_port_rcu(skb->dev);  in rmnet_egress_handler()
261 	err = rmnet_map_egress_handler(skb, port, mux_id, orig_dev);  in rmnet_egress_handler()
267 	rmnet_vnd_tx_fixup(skb, orig_dev);  in rmnet_egress_handler()
269 	dev_queue_xmit(skb);  in rmnet_egress_handler()
274 	kfree_skb(skb);  in rmnet_egress_handler()