diff options
Diffstat (limited to 'drivers/net/vxlan.c')
| -rw-r--r-- | drivers/net/vxlan.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 00680cc597ac..d6d57317cbd5 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -2907,11 +2907,35 @@ static int vxlan_config_validate(struct net *src_net, struct vxlan_config *conf, if (conf->saddr.sa.sa_family != conf->remote_ip.sa.sa_family) return -EINVAL; + if (vxlan_addr_multicast(&conf->saddr)) + return -EINVAL; + if (conf->saddr.sa.sa_family == AF_INET6) { if (!IS_ENABLED(CONFIG_IPV6)) return -EPFNOSUPPORT; use_ipv6 = true; conf->flags |= VXLAN_F_IPV6; + + if (!(conf->flags & VXLAN_F_COLLECT_METADATA)) { + int local_type = + ipv6_addr_type(&conf->saddr.sin6.sin6_addr); + int remote_type = + ipv6_addr_type(&conf->remote_ip.sin6.sin6_addr); + + if (local_type & IPV6_ADDR_LINKLOCAL) { + if (!(remote_type & IPV6_ADDR_LINKLOCAL) && + (remote_type != IPV6_ADDR_ANY)) + return -EINVAL; + + conf->flags |= VXLAN_F_IPV6_LINKLOCAL; + } else { + if (remote_type == + (IPV6_ADDR_UNICAST | IPV6_ADDR_LINKLOCAL)) + return -EINVAL; + + conf->flags &= ~VXLAN_F_IPV6_LINKLOCAL; + } + } } if (conf->label && !use_ipv6) @@ -2937,6 +2961,11 @@ static int vxlan_config_validate(struct net *src_net, struct vxlan_config *conf, if (vxlan_addr_multicast(&conf->remote_ip)) return -EINVAL; +#if IS_ENABLED(CONFIG_IPV6) + if (conf->flags & VXLAN_F_IPV6_LINKLOCAL) + return -EINVAL; +#endif + *lower = NULL; } |