diff options
Diffstat (limited to 'net/ipv6/addrconf.c')
| -rw-r--r-- | net/ipv6/addrconf.c | 32 |
1 files changed, 26 insertions, 6 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 120073ffb666..dbb5bb9269bb 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -5672,7 +5672,8 @@ static int inet6_fill_link_af(struct sk_buff *skb, const struct net_device *dev, return 0; } -static int inet6_set_iftoken(struct inet6_dev *idev, struct in6_addr *token) +static int inet6_set_iftoken(struct inet6_dev *idev, struct in6_addr *token, + struct netlink_ext_ack *extack) { struct inet6_ifaddr *ifp; struct net_device *dev = idev->dev; @@ -5683,12 +5684,29 @@ static int inet6_set_iftoken(struct inet6_dev *idev, struct in6_addr *token) if (!token) return -EINVAL; - if (dev->flags & (IFF_LOOPBACK | IFF_NOARP)) + + if (dev->flags & IFF_LOOPBACK) { + NL_SET_ERR_MSG_MOD(extack, "Device is loopback"); return -EINVAL; - if (!ipv6_accept_ra(idev)) + } + + if (dev->flags & IFF_NOARP) { + NL_SET_ERR_MSG_MOD(extack, + "Device does not do neighbour discovery"); + return -EINVAL; + } + + if (!ipv6_accept_ra(idev)) { + NL_SET_ERR_MSG_MOD(extack, + "Router advertisement is disabled on device"); return -EINVAL; - if (idev->cnf.rtr_solicits == 0) + } + + if (idev->cnf.rtr_solicits == 0) { + NL_SET_ERR_MSG(extack, + "Router solicitation is disabled on device"); return -EINVAL; + } write_lock_bh(&idev->lock); @@ -5796,7 +5814,8 @@ static int inet6_validate_link_af(const struct net_device *dev, return 0; } -static int inet6_set_link_af(struct net_device *dev, const struct nlattr *nla) +static int inet6_set_link_af(struct net_device *dev, const struct nlattr *nla, + struct netlink_ext_ack *extack) { struct inet6_dev *idev = __in6_dev_get(dev); struct nlattr *tb[IFLA_INET6_MAX + 1]; @@ -5809,7 +5828,8 @@ static int inet6_set_link_af(struct net_device *dev, const struct nlattr *nla) BUG(); if (tb[IFLA_INET6_TOKEN]) { - err = inet6_set_iftoken(idev, nla_data(tb[IFLA_INET6_TOKEN])); + err = inet6_set_iftoken(idev, nla_data(tb[IFLA_INET6_TOKEN]), + extack); if (err) return err; } |