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samples: net: vlan: Add IPv6 prefix config to each vlan-iface

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Without the IPv6-prefix set, the net_if_ipv6_addr_onlink() check
will always fail. The packets with DIP in the local link will go
to 'try_send' code branch, which is not expected.

Signed-off-by: Shrek Wang <shrek.wang@nxp.com>
This commit is contained in:
Shrek Wang 2024-09-06 14:36:47 +08:00 • committed by Carles Cufí
commit 1968220838
4 changed files with 28 additions and 3 deletions
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8
samples/net/vlan/Kconfig
View file

@ -53,4 +53,12 @@ config NET_SAMPLE_IFACE3_VLAN_TAG
Set VLAN (virtual LAN) tag (id) that is used in the sample
application.
config NET_SAMPLE_IFACE_MY_IPV6_PREFIXLEN
int "IPv6 address prefix length for the interfaces"
default 64
range 0 128
help
Set the IPv6 address prefix length (netmask) for the interfaces
that is used in the sample application.
source "Kconfig.zephyr"

3
samples/net/vlan/prj.conf
View file

@ -32,6 +32,9 @@ CONFIG_NET_CONFIG_NEED_IPV6=y
CONFIG_NET_CONFIG_NEED_IPV4=y
CONFIG_NET_CONFIG_SETTINGS=y
# IPv6 prefix len
CONFIG_NET_SAMPLE_IFACE_MY_IPV6_PREFIXLEN=64
# First ethernet interface will use these settings
CONFIG_NET_CONFIG_MY_IPV6_ADDR="2001:db8::1"
CONFIG_NET_CONFIG_PEER_IPV6_ADDR="2001:db8::2"

16
samples/net/vlan/src/main.c
View file

@ -42,7 +42,7 @@ static int setup_iface(struct net_if *iface, struct net_if *vlan,
{
struct net_if_addr *ifaddr;
struct in_addr addr4;
struct in6_addr addr6;
struct in6_addr addr6, netaddr6;
int ret;
ret = net_eth_vlan_enable(iface, vlan_tag);
@ -63,6 +63,20 @@ static int setup_iface(struct net_if *iface, struct net_if *vlan,
ipv6_addr, vlan);
return -EINVAL;
}
net_ipv6_addr_prefix_mask((uint8_t *)&addr6,
(uint8_t *)&netaddr6,
CONFIG_NET_SAMPLE_IFACE_MY_IPV6_PREFIXLEN);
if (!net_if_ipv6_prefix_add(vlan, &netaddr6,
CONFIG_NET_SAMPLE_IFACE_MY_IPV6_PREFIXLEN,
(uint32_t)0xffffffff)) {
LOG_ERR("Cannot add %s with prefix_len %d to interface %p",
ipv6_addr,
CONFIG_NET_SAMPLE_IFACE_MY_IPV6_PREFIXLEN,
vlan);
return -EINVAL;
}
}
if (IS_ENABLED(CONFIG_NET_IPV4)) {

4
samples/net/vlan/vlan-setup-linux.sh
View file

@ -49,11 +49,11 @@ ip link add link ${IFACE} name ${VLAN_NAME_PREFIX}.200 type vlan id 200
ip link set ${VLAN_NAME_PREFIX}.100 up
ip link set ${VLAN_NAME_PREFIX}.200 up
ip -6 addr add ${PREFIX_1_IPV6}::2 dev ${VLAN_NAME_PREFIX}.100
ip -6 addr add ${PREFIX_1_IPV6}::2/${PREFIXLEN_1_IPV6} dev ${VLAN_NAME_PREFIX}.100
ip -6 route add ${PREFIX_1_IPV6}::/${PREFIXLEN_1_IPV6} \
dev ${VLAN_NAME_PREFIX}.100
ip -6 addr add ${PREFIX_2_IPV6}::2 dev ${VLAN_NAME_PREFIX}.200
ip -6 addr add ${PREFIX_2_IPV6}::2/${PREFIXLEN_2_IPV6} dev ${VLAN_NAME_PREFIX}.200
ip -6 route add ${PREFIX_2_IPV6}::/${PREFIXLEN_2_IPV6} \
dev ${VLAN_NAME_PREFIX}.200