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arch/sim/src/up_netdriver.c: (1) Remove up_comparemac() check for matching MAC address. Let's trust that the tap device just return the packet which belong to us like other real network device hardware. (2) Add network device statistics support.

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This commit is contained in:
Xiang Xiao 2018-08-24 14:23:50 -06:00 committed by Gregory Nutt
parent 149748e4ed
commit c0bacb7d89
2 changed files with 18 additions and 24 deletions
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1
arch/sim/Kconfig
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@ -107,6 +107,7 @@ config SIM_NETDEV
bool "Simulated Network Device"
default y
depends on NET
select ARCH_HAVE_NETDEV_STATISTICS
---help---
Build in support for a simulated network device using a TAP device on Linux or
WPCAP on Windows.

39
arch/sim/src/up_netdriver.c
View File

@ -112,15 +112,6 @@ void timer_reset(struct timer *t)
t->start += t->interval;
}
#ifdef CONFIG_NET_PROMISCUOUS
# define up_comparemac(a,b) (0)
#else
static inline int up_comparemac(uint8_t *paddr1, struct ether_addr *paddr2)
{
return memcmp(paddr1, paddr2->ether_addr_octet, ETHER_ADDR_LEN);
}
#endif
static int sim_txpoll(struct net_driver_s *dev)
{
/* If the polling resulted in data that should be sent out on the network,
@ -155,7 +146,9 @@ static int sim_txpoll(struct net_driver_s *dev)
{
/* Send the packet */
NETDEV_TXPACKETS(dev);
netdev_send(g_sim_dev.d_buf, g_sim_dev.d_len);
NETDEV_TXDONE(dev);
}
}
@ -193,6 +186,8 @@ void netdriver_loop(void)
sched_lock();
if (g_sim_dev.d_len > 0)
{
NETDEV_RXPACKETS(&g_sim_dev);
/* Data received event. Check for valid Ethernet header with destination == our
* MAC address
*/
@ -200,32 +195,21 @@ void netdriver_loop(void)
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)
if (eth->type == HTONS(ETHTYPE_IP))
{
ninfo("IPv4 frame\n");
NETDEV_RXIPV4(&g_sim_dev);
/* Handle ARP on input then give the IPv4 packet to the network
* layer
@ -264,9 +248,10 @@ void netdriver_loop(void)
else
#endif /* CONFIG_NET_IPv4 */
#ifdef CONFIG_NET_IPv6
if (eth->type == HTONS(ETHTYPE_IP6) && is_ours)
if (eth->type == HTONS(ETHTYPE_IP6))
{
ninfo("Iv6 frame\n");
NETDEV_RXIPV6(&g_sim_dev);
/* Give the IPv6 packet to the network layer */
@ -304,6 +289,9 @@ void netdriver_loop(void)
#ifdef CONFIG_NET_ARP
if (eth->type == htons(ETHTYPE_ARP))
{
ninfo("ARP frame\n");
NETDEV_RXARP(&g_sim_dev);
arp_arpin(&g_sim_dev);
/* If the above function invocation resulted in data that
@ -319,9 +307,14 @@ void netdriver_loop(void)
else
#endif
{
NETDEV_RXDROPPED(&g_sim_dev);
nwarn("WARNING: Unsupported Ethernet type %u\n", eth->type);
}
}
else
{
NETDEV_RXERRORS(&g_sim_dev);
}
}
/* Otherwise, it must be a timeout event */