int ethernet_input(cbuf *buf, ifnet *i)
{
int err;
ethernet2_header *e2_head;
uint16 type;
if(cbuf_get_len(buf) < MIN_ETHERNET2_LEN)
{
cbuf_free_chain(buf);
return -1;
}
e2_head = cbuf_get_ptr(buf, 0);
type = ntohs(e2_head->type);
dump_ethernet_header(e2_head);
// strip out the ethernet header
buf = cbuf_truncate_head(buf, sizeof(ethernet2_header), true);
switch(type) {
case PROT_TYPE_IPV4:
err = ipv4_input(buf, i);
break;
case PROT_TYPE_ARP:
err = arp_input(buf, i);
break;
default:
dprintf("ethernet_receive: unknown ethernet type 0x%x\n", type);
err = -1;
}
return err;
}
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 emac_receive(FAR struct emac_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->d_dev.d_buf. Set
* amount of data in priv->d_dev.d_len
*/
#ifdef CONFIG_NET_PKT
/* When packet sockets are enabled, feed the frame into the packet tap */
pkt_input(&priv->d_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");
/* Handle ARP on input then give the IPv4 packet to the network
* layer
*/
arp_ipin(&priv->d_dev);
ipv4_input(&priv->d_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->d_dev.d_len > 0)
{
/* Update the Ethernet header with the correct MAC address */
#ifdef CONFIG_NET_IPv6
if (IFF_IS_IPv4(priv->d_dev.d_flags))
#endif
{
arp_out(&priv->d_dev);
}
#ifdef CONFIG_NET_IPv6
else
{
neighbor_out(&priv->d_dev);
}
#endif
/* And send the packet */
emac_transmit(priv);
}
}
else
#endif
#ifdef CONFIG_NET_IPv6
if (BUF->type == HTONS(ETHTYPE_IP6))
{
nllvdbg("Iv6 frame\n");
/* Give the IPv6 packet to the network layer */
ipv6_input(&priv->d_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->d_dev.d_len > 0)
{
/* Update the Ethernet header with the correct MAC address */
#ifdef CONFIG_NET_IPv4
if (IFF_IS_IPv4(priv->d_dev.d_flags))
{
arp_out(&priv->d_dev);
}
else
#endif
#ifdef CONFIG_NET_IPv6
{
neighbor_out(&priv->d_dev);
}
#endif
/* And send the packet */
emac_transmit(priv);
}
}
else
#endif
#ifdef CONFIG_NET_ARP
if (BUF->type == htons(ETHTYPE_ARP))
{
arp_arpin(&priv->d_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->d_dev.d_len > 0)
{
emac_transmit(priv);
}
}
#endif
}
while (true); /* While there are more packets to be processed */
}
static void e1000_receive(struct e1000_dev *e1000)
{
int head = e1000->rx_ring.head;
unsigned char *cp = (unsigned char *)
(e1000->rx_ring.buf + head * CONFIG_E1000_BUFF_SIZE);
int cnt;
while (e1000->rx_ring.desc[head].desc_status)
{
/* Check for errors and update statistics */
/* Here we do not handle packets that exceed packet-buffer size */
if ((e1000->rx_ring.desc[head].desc_status & 3) == 1)
{
cprintf("NIC READ: Oversized packet\n");
goto next;
}
/* Check if the packet is a valid size for the uIP buffer configuration */
/* get the number of actual data-bytes in this packet */
cnt = e1000->rx_ring.desc[head].packet_length;
if (cnt > CONFIG_NET_ETH_MTU || cnt < 14)
{
cprintf("NIC READ: invalid package size\n");
goto next;
}
/* Copy the data data from the hardware to e1000->netdev.d_buf. Set
* amount of data in e1000->netdev.d_len
*/
/* now we try to copy these data-bytes to the UIP buffer */
memcpy(e1000->netdev.d_buf, cp, cnt);
e1000->netdev.d_len = cnt;
#ifdef CONFIG_NET_PKT
/* When packet sockets are enabled, feed the frame into the packet tap */
pkt_input(&e1000->netdev);
#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");
/* Handle ARP on input then give the IPv4 packet to the network
* layer
*/
arp_ipin(&e1000->netdev);
ipv4_input(&e1000->netdev);
/* 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 (e1000->netdev.d_len > 0)
{
/* Update the Ethernet header with the correct MAC address */
#ifdef CONFIG_NET_IPv6
if (IFF_IS_IPv4(e1000->netdev.d_flags))
#endif
{
arp_out(&e1000->netdev);
}
#ifdef CONFIG_NET_IPv6
else
{
neighbor_out(&e1000->netdev);
}
#endif
/* And send the packet */
e1000_transmit(e1000);
}
}
else
#endif
#ifdef CONFIG_NET_IPv6
if (BUF->type == HTONS(ETHTYPE_IP6))
{
nllvdbg("Iv6 frame\n");
/* Give the IPv6 packet to the network layer */
ipv6_input(&e1000->netdev);
/* 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 (e1000->netdev.d_len > 0)
{
/* Update the Ethernet header with the correct MAC address */
#ifdef CONFIG_NET_IPv4
if (IFF_IS_IPv4(e1000->netdev.d_flags))
{
arp_out(&e1000->netdev);
}
else
#endif
#ifdef CONFIG_NET_IPv6
{
neighbor_out(&e1000->netdev);
}
#endif
/* And send the packet */
e1000_transmit(e1000);
}
}
else
#endif
#ifdef CONFIG_NET_ARP
if (BUF->type == htons(ETHTYPE_ARP))
{
arp_arpin(&e1000->netdev);
/* 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 (e1000->netdev.d_len > 0)
{
e1000_transmit(e1000);
}
#endif
}
next:
e1000->rx_ring.desc[head].desc_status = 0;
e1000->rx_ring.head = (head + 1) % CONFIG_E1000_N_RX_DESC;
e1000->rx_ring.free++;
head = e1000->rx_ring.head;
cp = (unsigned char *)(e1000->rx_ring.buf + head * CONFIG_E1000_BUFF_SIZE);
}
}
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 */
}
void netdriver_loop(void)
{
FAR struct eth_hdr_s *eth;
/* Check for new frames. If so, then poll the network for new XMIT data */
net_lock();
(void)devif_poll(&g_sim_dev, sim_txpoll);
net_unlock();
/* netdev_read will return 0 on a timeout event and >0 on a data received event */
g_sim_dev.d_len = netdev_read((FAR unsigned char *)g_sim_dev.d_buf,
CONFIG_NET_ETH_MTU);
/* Disable preemption through to the following so that it behaves a little more
* like an interrupt (otherwise, the following logic gets pre-empted an behaves
* oddly.
*/
sched_lock();
if (g_sim_dev.d_len > 0)
{
/* Data received event. Check for valid Ethernet header with destination == our
* MAC address
*/
eth = BUF;
if (g_sim_dev.d_len > ETH_HDRLEN)
{
int is_ours;
/* Figure out if this ethernet frame is addressed to us. This affects
* what we're willing to receive. Note that in promiscuous mode, the
* up_comparemac will always return 0.
*/
is_ours = (up_comparemac(eth->dest, &g_sim_dev.d_mac.ether) == 0);
#ifdef CONFIG_NET_PKT
/* When packet sockets are enabled, feed the frame into the packet
* tap.
*/
if (is_ours)
{
pkt_input(&g_sim_dev);
}
#endif /* CONFIG_NET_PKT */
/* We only accept IP packets of the configured type and ARP packets */
#ifdef CONFIG_NET_IPv4
if (eth->type == HTONS(ETHTYPE_IP) && is_ours)
{
ninfo("IPv4 frame\n");
/* Handle ARP on input then give the IPv4 packet to the network
* layer
*/
arp_ipin(&g_sim_dev);
ipv4_input(&g_sim_dev);
/* If the above function invocation resulted in data that
* should be sent out on the network, the global variable
* d_len is set to a value > 0.
*/
if (g_sim_dev.d_len > 0)
{
/* Update the Ethernet header with the correct MAC address */
#ifdef CONFIG_NET_IPv6
if (IFF_IS_IPv4(g_sim_dev.d_flags))
#endif
{
arp_out(&g_sim_dev);
}
#ifdef CONFIG_NET_IPv6
else
{
neighbor_out(&g_sim_dev);
}
#endif
/* And send the packet */
netdev_send(g_sim_dev.d_buf, g_sim_dev.d_len);
}
}
else
#endif /* CONFIG_NET_IPv4 */
#ifdef CONFIG_NET_IPv6
if (eth->type == HTONS(ETHTYPE_IP6) && is_ours)
{
ninfo("Iv6 frame\n");
/* Give the IPv6 packet to the network layer */
ipv6_input(&g_sim_dev);
/* If the above function invocation resulted in data that
* should be sent out on the network, the global variable
* d_len is set to a value > 0.
*/
if (g_sim_dev.d_len > 0)
{
/* Update the Ethernet header with the correct MAC address */
#ifdef CONFIG_NET_IPv4
if (IFF_IS_IPv4(g_sim_dev.d_flags))
{
arp_out(&g_sim_dev);
}
else
#endif
#ifdef CONFIG_NET_IPv6
{
neighbor_out(&g_sim_dev);
}
#endif /* CONFIG_NET_IPv6 */
/* And send the packet */
netdev_send(g_sim_dev.d_buf, g_sim_dev.d_len);
}
}
else
#endif/* CONFIG_NET_IPv6 */
#ifdef CONFIG_NET_ARP
if (eth->type == htons(ETHTYPE_ARP))
{
arp_arpin(&g_sim_dev);
/* If the above function invocation resulted in data that
* should be sent out on the network, the global variable
* d_len is set to a value > 0.
*/
if (g_sim_dev.d_len > 0)
{
netdev_send(g_sim_dev.d_buf, g_sim_dev.d_len);
}
}
else
#endif
{
nwarn("WARNING: Unsupported Ethernet type %u\n", eth->type);
}
}
}
/* Otherwise, it must be a timeout event */
else if (timer_expired(&g_periodic_timer))
{
timer_reset(&g_periodic_timer);
devif_timer(&g_sim_dev, sim_txpoll);
}
sched_unlock();
}
static int slip_rxtask(int argc, FAR char *argv[])
{
FAR struct slip_driver_s *priv;
unsigned int index = *(argv[1]) - '0';
net_lock_t flags;
int ch;
nerr("index: %d\n", index);
DEBUGASSERT(index < CONFIG_NET_SLIP_NINTERFACES);
/* Get our private data structure instance and wake up the waiting
* initialization logic.
*/
priv = &g_slip[index];
slip_semgive(priv);
/* Loop forever */
for (; ; )
{
/* Wait for the next character to be available on the input stream. */
ninfo("Waiting...\n");
ch = slip_getc(priv);
/* Ignore any input that we receive before the interface is up. */
if (!priv->bifup)
{
continue;
}
/* We have something...
*
* END characters may appear at packet boundaries BEFORE as well as
* after the beginning of the packet. This is normal and expected.
*/
if (ch == SLIP_END)
{
priv->rxlen = 0;
}
/* Otherwise, we are in danger of being out-of-sync. Apparently the
* leading END character is optional. Let's try to continue.
*/
else
{
priv->rxbuf[0] = (uint8_t)ch;
priv->rxlen = 1;
}
/* Copy the data data from the hardware to priv->rxbuf until we put
* together a whole packet.
*/
slip_receive(priv);
NETDEV_RXPACKETS(&priv->dev);
/* All packets are assumed to be IP packets (we don't have a choice..
* there is no Ethernet header containing the EtherType). So pass the
* received packet on for IP processing -- but only if it is big
* enough to hold an IP header.
*/
if (priv->rxlen >= IPv4_HDRLEN)
{
NETDEV_RXIPV4(&priv->dev);
/* Handle the IP input. Get exclusive access to the network. */
slip_semtake(priv);
priv->dev.d_buf = priv->rxbuf;
priv->dev.d_len = priv->rxlen;
flags = net_lock();
ipv4_input(&priv->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. NOTE that we are transmitting using the RX buffer!
*/
if (priv->dev.d_len > 0)
{
slip_transmit(priv);
kill(priv->txpid, SIGALRM);
}
net_unlock(flags);
slip_semgive(priv);
}
else
{
NETDEV_RXERRORS(&priv->dev);
}
}
/* We won't get here */
return OK;
}
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);
}
void rtos_vnet_recv(struct rgmp_vnet *rgmp_vnet, char *data, int len)
{
struct vnet_driver_s *vnet = rgmp_vnet->priv;
do
{
/* Check if the packet is a valid size for the network buffer
* configuration.
*/
if (len > CONFIG_NET_ETH_MTU || len < 14)
{
#ifdef CONFIG_DEBUG
cprintf("VNET: receive invalid packet of size %d\n", len);
#endif
return;
}
/* Copy the data data from the hardware to vnet->sk_dev.d_buf. Set
* amount of data in vnet->sk_dev.d_len
*/
memcpy(vnet->sk_dev.d_buf, data, len);
vnet->sk_dev.d_len = len;
#ifdef CONFIG_NET_PKT
/* When packet sockets are enabled, feed the frame into the packet tap */
pkt_input(&vnet->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");
/* Handle ARP on input then give the IPv4 packet to the network
* layer
*/
arp_ipin(&vnet->sk_dev);
ipv4_input(&vnet->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 (vnet->sk_dev.d_len > 0)
{
/* Update the Ethernet header with the correct MAC address */
#ifdef CONFIG_NET_IPv6
if (IFF_IS_IPv4(vnet->sk_dev.d_flags))
#endif
{
arp_out(&vnet->sk_dev);
}
#ifdef CONFIG_NET_IPv6
else
{
neighbor_out(&vnet->sk_dev);
}
#endif
/* And send the packet */
vnet_transmit(vnet);
}
}
else
#endif
#ifdef CONFIG_NET_IPv6
if (BUF->type == HTONS(ETHTYPE_IP6))
{
nllvdbg("Iv6 frame\n");
/* Give the IPv6 packet to the network layer */
ipv6_input(&vnet->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 (vnet->sk_dev.d_len > 0)
{
/* Update the Ethernet header with the correct MAC address */
#ifdef CONFIG_NET_IPv4
if (IFF_IS_IPv4(vnet->sk_dev.d_flags))
{
arp_out(&vnet->sk_dev);
}
else
#endif
#ifdef CONFIG_NET_IPv6
{
neighbor_out(&vnet->sk_dev);
}
#endif
/* And send the packet */
vnet_transmit(vnet);
}
}
else
#endif
#ifdef CONFIG_NET_ARP
if (BUF->type == htons(ETHTYPE_ARP))
{
arp_arpin(&vnet->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 (vnet->sk_dev.d_len > 0)
{
vnet_transmit(vnet);
}
}
#endif
}
while (0); /* While there are more packets to be processed */
}