On Fri, 14 Apr 2017 18:44:44 +0200
Matthias Schiffer <mschif...@universe-factory.net> wrote:
> diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
> index 07f89b037681..95a71546e8f2 100644
> --- a/drivers/net/vxlan.c
> +++ b/drivers/net/vxlan.c
> @@ -2881,11 +2881,39 @@ 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)) {
> + pr_info("invalid combination of address
> scopes\n");
It is always helpful to include device if possible in error message.
netdev_notice(old->dev, " invalid
combination of address scopes\n");
Also vxlan is good candidate for extended netlink error reporting.
