static int lo_txpoll(FAR struct net_driver_s *dev)
{
FAR struct lo_driver_s *priv = (FAR struct lo_driver_s *)dev->d_private;
/* Loop while there is data "sent", i.e., while d_len > 0. That should be
* the case upon entry here and while the processing of the IPv4/6 packet
* generates a new packet to be sent. Sending, of course, just means
* relaying back through the network for this driver.
*/
while (priv->lo_dev.d_len > 0)
{
NETDEV_TXPACKETS(&priv->lo_dev);
NETDEV_RXPACKETS(&priv->lo_dev);
#ifdef CONFIG_NET_PKT
/* When packet sockets are enabled, feed the frame into the packet tap */
pkt_input(&priv->lo_dev);
#endif
/* We only accept IP packets of the configured type and ARP packets */
#ifdef CONFIG_NET_IPv4
if ((IPv4BUF->vhl & IP_VERSION_MASK) == IPv4_VERSION)
{
nllvdbg("IPv4 frame\n");
NETDEV_RXIPV4(&priv->lo_dev);
ipv4_input(&priv->lo_dev);
}
else
#endif
#ifdef CONFIG_NET_IPv6
if ((IPv6BUF->vtc & IP_VERSION_MASK) == IPv6_VERSION)
{
nllvdbg("Iv6 frame\n");
NETDEV_RXIPV6(&priv->lo_dev);
ipv6_input(&priv->lo_dev);
}
else
#endif
{
ndbg("WARNING: Unrecognized packet type dropped: %02x\n", IPv4BUF->vhl);
NETDEV_RXDROPPED(&priv->lo_dev);
priv->lo_dev.d_len = 0;
}
priv->lo_txdone = true;
NETDEV_TXDONE(&priv->lo_dev);
}
return 0;
}
static void bcmf_receive(FAR struct bcmf_dev_s *priv)
{
struct bcmf_frame_s *frame;
// wlinfo("Entry\n");
do
{
/* Request frame buffer from bus interface */
frame = bcmf_bdc_rx_frame(priv);
if (frame == NULL)
{
/* No more frame to process */
break;
}
if (!priv->bc_bifup)
{
/* Interface down, drop frame */
priv->bus->free_frame(priv, frame);
continue;
}
priv->bc_dev.d_buf = frame->data;
priv->bc_dev.d_len = frame->len - (uint32_t)(frame->data - frame->base);
wlinfo("Got frame %p %d\n", frame, priv->bc_dev.d_len);
#ifdef CONFIG_NET_PKT
/* When packet sockets are enabled, feed the frame into the packet tap */
pkt_input(&priv->bc_dev);
#endif
/* We only accept IP packets of the configured type and ARP packets */
#ifdef CONFIG_NET_IPv4
if (BUF->type == HTONS(ETHTYPE_IP))
{
ninfo("IPv4 frame\n");
NETDEV_RXIPV4(&priv->bc_dev);
/* Handle ARP on input then give the IPv4 packet to the network
* layer
*/
arp_ipin(&priv->bc_dev);
ipv4_input(&priv->bc_dev);
/* If the above function invocation resulted in data that should be
* sent out on the network, the field d_len will set to a value > 0.
*/
if (priv->bc_dev.d_len > 0)
{
/* Update the Ethernet header with the correct MAC address */
#ifdef CONFIG_NET_IPv6
if (IFF_IS_IPv4(priv->bc_dev.d_flags))
#endif
{
arp_out(&priv->bc_dev);
}
#ifdef CONFIG_NET_IPv6
else
{
neighbor_out(&kel->bc_dev);
}
#endif
/* And send the packet */
bcmf_transmit(priv, frame);
}
else
{
/* Release RX frame buffer */
priv->bus->free_frame(priv, frame);
}
}
else
#endif
#ifdef CONFIG_NET_IPv6
if (BUF->type == HTONS(ETHTYPE_IP6))
{
ninfo("Iv6 frame\n");
NETDEV_RXIPV6(&priv->bc_dev);
/* Give the IPv6 packet to the network layer */
ipv6_input(&priv->bc_dev);
/* If the above function invocation resulted in data that should be
* sent out on the network, the field d_len will set to a value > 0.
*/
if (priv->bc_dev.d_len > 0)
{
/* Update the Ethernet header with the correct MAC address */
#ifdef CONFIG_NET_IPv4
if (IFF_IS_IPv4(priv->bc_dev.d_flags))
{
arp_out(&priv->bc_dev);
}
else
#endif
#ifdef CONFIG_NET_IPv6
{
neighbor_out(&priv->bc_dev);
}
#endif
/* And send the packet */
bcmf_transmit(priv, frame);
}
else
{
/* Release RX frame buffer */
priv->bus->free_frame(priv, frame);
}
}
else
#endif
#ifdef CONFIG_NET_ARP
if (BUF->type == htons(ETHTYPE_ARP))
{
arp_arpin(&priv->bc_dev);
NETDEV_RXARP(&priv->bc_dev);
/* If the above function invocation resulted in data that should be
* sent out on the network, the field d_len will set to a value > 0.
*/
if (priv->bc_dev.d_len > 0)
{
bcmf_transmit(priv, frame);
}
else
{
/* Release RX frame buffer */
priv->bus->free_frame(priv, frame);
}
}
else
#endif
{
wlerr("ERROR: RX dropped\n");
NETDEV_RXDROPPED(&priv->bc_dev);
priv->bus->free_frame(priv, frame);
}
}
while (1); /* While there are more packets to be processed */
}
static void misoc_net_receive(FAR struct misoc_net_driver_s *priv)
{
uint8_t rxslot;
uint32_t rxlen;
do
{
/* Check for errors and update statistics */
/* Check if the packet is a valid size for the network buffer
* configuration.
*/
/* Find rx slot */
rxslot = ethmac_sram_writer_slot_read();
/* Get rx len */
rxlen = ethmac_sram_writer_length_read();
/* Copy the data data from the hardware to priv->misoc_net_dev.d_buf. Set
* amount of data in priv->misoc_net_dev.d_len
*
* NOTE: These memcpy's could be avoided by simply setting the d_buf
* pointer to the rx*_buf containing the received data. Some additional
* buffer management logic would also be required.
*/
misoc_flush_dcache();
if (rxslot)
{
memcpy(priv->misoc_net_dev.d_buf, priv->rx1_buf, rxlen);
}
else
{
memcpy(priv->misoc_net_dev.d_buf, priv->rx0_buf, rxlen);
}
/* Clear event pending */
ethmac_sram_writer_ev_pending_write(1);
priv->misoc_net_dev.d_len = rxlen;
#ifdef CONFIG_NET_PKT
/* When packet sockets are enabled, feed the frame into the packet tap */
pkt_input(&priv->misoc_net_dev);
#endif
/* We only accept IP packets of the configured type and ARP packets */
#ifdef CONFIG_NET_IPv4
if (BUF->type == HTONS(ETHTYPE_IP))
{
ninfo("IPv4 frame\n");
NETDEV_RXIPV4(&priv->misoc_net_dev);
/* Handle ARP on input then give the IPv4 packet to the network
* layer
*/
arp_ipin(&priv->misoc_net_dev);
ipv4_input(&priv->misoc_net_dev);
/* If the above function invocation resulted in data that should be
* sent out on the network, the field d_len will set to a value > 0.
*/
if (priv->misoc_net_dev.d_len > 0)
{
/* Update the Ethernet header with the correct MAC address */
#ifdef CONFIG_NET_IPv6
if (IFF_IS_IPv4(priv->misoc_net_dev.d_flags))
#endif
{
arp_out(&priv->misoc_net_dev);
}
#ifdef CONFIG_NET_IPv6
else
{
neighbor_out(&kel->misoc_net_dev);
}
#endif
/* And send the packet */
misoc_net_transmit(priv);
}
}
else
#endif
#ifdef CONFIG_NET_IPv6
if (BUF->type == HTONS(ETHTYPE_IP6))
{
ninfo("Iv6 frame\n");
NETDEV_RXIPV6(&priv->misoc_net_dev);
/* Give the IPv6 packet to the network layer */
ipv6_input(&priv->misoc_net_dev);
/* If the above function invocation resulted in data that should be
* sent out on the network, the field d_len will set to a value > 0.
*/
if (priv->misoc_net_dev.d_len > 0)
{
/* Update the Ethernet header with the correct MAC address */
#ifdef CONFIG_NET_IPv4
if (IFF_IS_IPv4(priv->misoc_net_dev.d_flags))
{
arp_out(&priv->misoc_net_dev);
}
else
#endif
#ifdef CONFIG_NET_IPv6
{
neighbor_out(&priv->misoc_net_dev);
}
#endif
/* And send the packet */
misoc_net_transmit(priv);
}
}
else
#endif
#ifdef CONFIG_NET_ARP
if (BUF->type == htons(ETHTYPE_ARP))
{
arp_arpin(&priv->misoc_net_dev);
NETDEV_RXARP(&priv->misoc_net_dev);
/* If the above function invocation resulted in data that should be
* sent out on the network, the field d_len will set to a value > 0.
*/
if (priv->misoc_net_dev.d_len > 0)
{
misoc_net_transmit(priv);
}
}
#endif
else
{
NETDEV_RXDROPPED(&priv->misoc_net_dev);
}
}
while (ethmac_sram_writer_ev_pending_read() & ETHMAC_EV_SRAM_WRITER);
}
static void skel_receive(FAR struct skel_driver_s *priv)
{
do
{
/* Check for errors and update statistics */
/* Check if the packet is a valid size for the network buffer
* configuration.
*/
/* Copy the data data from the hardware to priv->sk_dev.d_buf. Set
* amount of data in priv->sk_dev.d_len
*/
#ifdef CONFIG_NET_PKT
/* When packet sockets are enabled, feed the frame into the packet tap */
pkt_input(&priv->sk_dev);
#endif
/* We only accept IP packets of the configured type and ARP packets */
#ifdef CONFIG_NET_IPv4
if (BUF->type == HTONS(ETHTYPE_IP))
{
nllvdbg("IPv4 frame\n");
NETDEV_RXIPV4(&priv->sk_dev);
/* Handle ARP on input then give the IPv4 packet to the network
* layer
*/
arp_ipin(&priv->sk_dev);
ipv4_input(&priv->sk_dev);
/* If the above function invocation resulted in data that should be
* sent out on the network, the field d_len will set to a value > 0.
*/
if (priv->sk_dev.d_len > 0)
{
/* Update the Ethernet header with the correct MAC address */
#ifdef CONFIG_NET_IPv6
if (IFF_IS_IPv4(priv->sk_dev.d_flags))
#endif
{
arp_out(&priv->sk_dev);
}
#ifdef CONFIG_NET_IPv6
else
{
neighbor_out(&kel->sk_dev);
}
#endif
/* And send the packet */
skel_transmit(priv);
}
}
else
#endif
#ifdef CONFIG_NET_IPv6
if (BUF->type == HTONS(ETHTYPE_IP6))
{
nllvdbg("Iv6 frame\n");
NETDEV_RXIPV6(&priv->sk_dev);
/* Give the IPv6 packet to the network layer */
ipv6_input(&priv->sk_dev);
/* If the above function invocation resulted in data that should be
* sent out on the network, the field d_len will set to a value > 0.
*/
if (priv->sk_dev.d_len > 0)
{
/* Update the Ethernet header with the correct MAC address */
#ifdef CONFIG_NET_IPv4
if (IFF_IS_IPv4(priv->sk_dev.d_flags))
{
arp_out(&priv->sk_dev);
}
else
#endif
#ifdef CONFIG_NET_IPv6
{
neighbor_out(&priv->sk_dev);
}
#endif
/* And send the packet */
skel_transmit(priv);
}
}
else
#endif
#ifdef CONFIG_NET_ARP
if (BUF->type == htons(ETHTYPE_ARP))
{
arp_arpin(&priv->sk_dev);
NETDEV_RXARP(&priv->sk_dev);
/* If the above function invocation resulted in data that should be
* sent out on the network, the field d_len will set to a value > 0.
*/
if (priv->sk_dev.d_len > 0)
{
skel_transmit(priv);
}
}
#endif
else
{
NETDEV_RXDROPPED(&priv->sk_dev);
}
}
while (); /* While there are more packets to be processed */
}