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
63 	if (RMNET_MAP_GET_CD_BIT(skb)) {  in __rmnet_map_ingress_handler()
65 			return rmnet_map_command(skb, port);  in __rmnet_map_ingress_handler()
70 	mux_id = RMNET_MAP_GET_MUX_ID(skb);  in __rmnet_map_ingress_handler()
71 	pad = RMNET_MAP_GET_PAD(skb);  in __rmnet_map_ingress_handler()
72 	len = RMNET_MAP_GET_LENGTH(skb) - pad;  in __rmnet_map_ingress_handler()
81 	skb->dev = ep->egress_dev;  in __rmnet_map_ingress_handler()
84 	skb_pull(skb, sizeof(struct rmnet_map_header));  in __rmnet_map_ingress_handler()
85 	rmnet_set_skb_proto(skb);  in __rmnet_map_ingress_handler()
88 		if (!rmnet_map_checksum_downlink_packet(skb, len + pad))  in __rmnet_map_ingress_handler()
89 			skb->ip_summed = CHECKSUM_UNNECESSARY;  in __rmnet_map_ingress_handler()
92 	skb_trim(skb, len);  in __rmnet_map_ingress_handler()
93 	rmnet_deliver_skb(skb);  in __rmnet_map_ingress_handler()
97 	kfree_skb(skb);  in __rmnet_map_ingress_handler()
101 rmnet_map_ingress_handler(struct sk_buff *skb,  in rmnet_map_ingress_handler()  argument
106 	if (skb->dev->type == ARPHRD_ETHER) {  in rmnet_map_ingress_handler()
107 		if (pskb_expand_head(skb, ETH_HLEN, 0, GFP_ATOMIC)) {  in rmnet_map_ingress_handler()
108 			kfree_skb(skb);  in rmnet_map_ingress_handler()
112 		skb_push(skb, ETH_HLEN);  in rmnet_map_ingress_handler()
116 		while ((skbn = rmnet_map_deaggregate(skb, port)) != NULL)  in rmnet_map_ingress_handler()
119 		consume_skb(skb);  in rmnet_map_ingress_handler()
121 		__rmnet_map_ingress_handler(skb, port);  in rmnet_map_ingress_handler()
125 static int rmnet_map_egress_handler(struct sk_buff *skb,  in rmnet_map_egress_handler()  argument
140 	if (skb_headroom(skb) < required_headroom) {  in rmnet_map_egress_handler()
141 		if (pskb_expand_head(skb, required_headroom, 0, GFP_ATOMIC))  in rmnet_map_egress_handler()
146 		rmnet_map_checksum_uplink_packet(skb, orig_dev);  in rmnet_map_egress_handler()
148 	map_header = rmnet_map_add_map_header(skb, additional_header_len, 0);  in rmnet_map_egress_handler()
154 	skb->protocol = htons(ETH_P_MAP);  in rmnet_map_egress_handler()
160 rmnet_bridge_handler(struct sk_buff *skb, struct net_device *bridge_dev)  in rmnet_bridge_handler()  argument
162 	if (skb_mac_header_was_set(skb))  in rmnet_bridge_handler()
163 		skb_push(skb, skb->mac_len);  in rmnet_bridge_handler()
166 		skb->dev = bridge_dev;  in rmnet_bridge_handler()
167 		dev_queue_xmit(skb);  in rmnet_bridge_handler()
179 	struct sk_buff *skb = *pskb;  in rmnet_rx_handler()  local
183 	if (!skb)  in rmnet_rx_handler()
186 	if (skb->pkt_type == PACKET_LOOPBACK)  in rmnet_rx_handler()
189 	dev = skb->dev;  in rmnet_rx_handler()
192 		atomic_long_inc(&skb->dev->rx_nohandler);  in rmnet_rx_handler()
193 		kfree_skb(skb);  in rmnet_rx_handler()
199 		rmnet_map_ingress_handler(skb, port);  in rmnet_rx_handler()
202 		rmnet_bridge_handler(skb, port->bridge_ep);  in rmnet_rx_handler()
214 void rmnet_egress_handler(struct sk_buff *skb)  in rmnet_egress_handler()  argument
221 	sk_pacing_shift_update(skb->sk, 8);  in rmnet_egress_handler()
223 	orig_dev = skb->dev;  in rmnet_egress_handler()
225 	skb->dev = priv->real_dev;  in rmnet_egress_handler()
228 	port = rmnet_get_port_rcu(skb->dev);  in rmnet_egress_handler()
232 	if (rmnet_map_egress_handler(skb, port, mux_id, orig_dev))  in rmnet_egress_handler()
235 	rmnet_vnd_tx_fixup(skb, orig_dev);  in rmnet_egress_handler()
237 	dev_queue_xmit(skb);  in rmnet_egress_handler()
242 	kfree_skb(skb);  in rmnet_egress_handler()