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samples: net: dsa: Enable DHCPv4 and start it when interface is up

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Enable DHCPv4 when network interface goes up. This makes it easier
to test IP connectivity with DSA.

Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
This commit is contained in:
Jukka Rissanen 2025-03-26 14:59:55 +02:00 • committed by Benjamin Cabé
commit c09ec58f01
2 changed files with 41 additions and 2 deletions
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12
samples/net/dsa/prj.conf
View file

@ -2,7 +2,7 @@ CONFIG_NETWORKING=y
CONFIG_NET_LOG=y
CONFIG_NET_IPV6=y
CONFIG_NET_IPV4=y
CONFIG_NET_DHCPV4=n
CONFIG_NET_DHCPV4=y
CONFIG_NET_UDP=y
CONFIG_NET_TCP=y
CONFIG_NET_STATISTICS=y
@ -18,6 +18,9 @@ CONFIG_NET_IF_UNICAST_IPV6_ADDR_COUNT=5
CONFIG_NET_IF_MCAST_IPV6_ADDR_COUNT=5
CONFIG_NET_IF_UNICAST_IPV4_ADDR_COUNT=1
CONFIG_NET_MAX_CONTEXTS=4
CONFIG_ZVFS_OPEN_MAX=4
CONFIG_ZVFS_POLL_MAX=4
CONFIG_NET_MAX_CONN=4
CONFIG_INIT_STACKS=y
CONFIG_PRINTK=y
@ -46,3 +49,10 @@ CONFIG_REQUIRES_FULL_LIBC=y
CONFIG_NET_IF_MAX_IPV4_COUNT=4
CONFIG_NET_IF_MAX_IPV6_COUNT=4
CONFIG_NET_MGMT=y
CONFIG_NET_MGMT_EVENT=y
CONFIG_NET_MGMT_EVENT_STACK_SIZE=2048
CONFIG_NET_HOSTNAME_ENABLE=y
CONFIG_NET_HOSTNAME="dsa"

31
samples/net/dsa/src/main.c
View file

@ -39,7 +39,8 @@ static void dsa_iface_find_cb(struct net_if *iface, void *user_data)
if (user == NULL) {
continue;
}
LOG_INF("User interface %d found.", i);
LOG_INF("[%d] User interface %d found.", i,
net_if_get_by_iface(user));
ifaces->lan[i] = user;
}
@ -48,12 +49,40 @@ static void dsa_iface_find_cb(struct net_if *iface, void *user_data)
}
}
#if defined(CONFIG_NET_MGMT_EVENT)
#define EVENT_MASK (NET_EVENT_IF_UP)
static struct net_mgmt_event_callback mgmt_cb;
static void event_handler(struct net_mgmt_event_callback *cb,
uint32_t mgmt_event, struct net_if *iface)
{
ARG_UNUSED(iface);
ARG_UNUSED(cb);
if (mgmt_event == NET_EVENT_IF_UP) {
LOG_INF("Port %d is up", net_if_get_by_iface(iface));
#if defined(CONFIG_NET_DHCPV4)
net_dhcpv4_start(iface);
#endif
return;
}
}
#endif /* CONFIG_NET_MGMT_EVENT */
int main(void)
{
/* Initialize interfaces - read them to user_data */
(void)memset(&user_data, 0, sizeof(user_data));
net_if_foreach(dsa_iface_find_cb, &user_data);
#if defined(CONFIG_NET_MGMT_EVENT)
net_mgmt_init_event_callback(&mgmt_cb,
event_handler, EVENT_MASK);
net_mgmt_add_event_callback(&mgmt_cb);
#endif /* CONFIG_NET_MGMT_EVENT */
#if defined(CONFIG_NET_SAMPLE_DSA_LLDP)
dsa_lldp(&user_data);
#endif