/* Processes packet as per ingress data format for receiving device. Logical
* endpoint is determined from packet inspection. Packet is then sent to the
* egress device listed in the logical endpoint configuration.
*/
rx_handler_result_t rmnet_rx_handler(struct sk_buff **pskb)
{
struct sk_buff *skb = *pskb;
struct rmnet_port *port;
struct net_device *dev;
if (!skb)
goto done;
if (skb->pkt_type == PACKET_LOOPBACK)
return RX_HANDLER_PASS;
dev = skb->dev;
port = rmnet_get_port(dev);
switch (port->rmnet_mode) {
case RMNET_EPMODE_VND:
rmnet_map_ingress_handler(skb, port);
break;
case RMNET_EPMODE_BRIDGE:
rmnet_bridge_handler(skb, port->bridge_ep);
break;
}
done:
return RX_HANDLER_CONSUMED;
}
/**
* __rmnet_deliver_skb() - Deliver skb
*
* Determines where to deliver skb. Options are: consume by network stack,
* pass to bridge handler, or pass to virtual network device
*
* Return:
* - RX_HANDLER_CONSUMED if packet forwarded or dropped
* - RX_HANDLER_PASS if packet is to be consumed by network stack as-is
*/
static rx_handler_result_t __rmnet_deliver_skb(struct sk_buff *skb,
struct rmnet_logical_ep_conf_s *ep)
{
trace___rmnet_deliver_skb(skb);
switch (ep->rmnet_mode) {
case RMNET_EPMODE_NONE:
return RX_HANDLER_PASS;
case RMNET_EPMODE_BRIDGE:
return rmnet_bridge_handler(skb, ep);
case RMNET_EPMODE_VND:
skb_reset_transport_header(skb);
skb_reset_network_header(skb);
switch (rmnet_vnd_rx_fixup(skb, skb->dev)) {
case RX_HANDLER_CONSUMED:
return RX_HANDLER_CONSUMED;
case RX_HANDLER_PASS:
skb->pkt_type = PACKET_HOST;
netif_receive_skb(skb);
return RX_HANDLER_CONSUMED;
}
return RX_HANDLER_PASS;
default:
LOGD("Unkown ep mode %d", ep->rmnet_mode);
rmnet_kfree_skb(skb, RMNET_STATS_SKBFREE_DELIVER_NO_EP);
return RX_HANDLER_CONSUMED;
}
}
/* Processes packet as per ingress data format for receiving device. Logical
* endpoint is determined from packet inspection. Packet is then sent to the
* egress device listed in the logical endpoint configuration.
*/
rx_handler_result_t rmnet_rx_handler(struct sk_buff **pskb)
{
struct sk_buff *skb = *pskb;
struct rmnet_port *port;
struct net_device *dev;
if (!skb)
goto done;
dev = skb->dev;
port = rmnet_get_port(dev);
switch (port->rmnet_mode) {
case RMNET_EPMODE_VND:
if (port->ingress_data_format & RMNET_INGRESS_FORMAT_MAP)
rmnet_map_ingress_handler(skb, port);
break;
case RMNET_EPMODE_BRIDGE:
rmnet_bridge_handler(skb, port->bridge_ep);
break;
}
done:
return RX_HANDLER_CONSUMED;
}