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| author | Heiner Kallweit <heiner.kallweit@web.de> | 2014-04-20 21:29:36 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-04-22 21:27:57 -0400 |
| commit | 6046d5b4e464ba9b2cc8f0407069456624598dd5 (patch) | |
| tree | 5f853f7c19f01d8a3c780995c85717ee8cd708a0 /net | |
| parent | 0080d4f5f21861da5d5c0bf443e6ba1222c6af7b (diff) | |
| download | linux-6046d5b4e464ba9b2cc8f0407069456624598dd5.tar.bz2 | |
ipv6: support IFA_F_MANAGETEMPADDR for address deletion too
Userspace applications can use IFA_F_MANAGETEMPADDR with RTM_NEWADDR
already to indicate that the kernel should take care of temporary
address management.
This patch adds related functionality to RTM_DELADDR. By setting
IFA_F_MANAGETEMPADDR a userspace application can indicate that the kernel
should delete all related temporary addresses as well.
A corresponding patch for the "ip addr del" command has been applied to
iproute2 already.
Signed-off-by: Heiner Kallweit <heiner.kallweit@web.de>
Reviewed-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv6/addrconf.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 6c7fa0853fc7..fc203db2211a 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -2504,8 +2504,8 @@ static int inet6_addr_add(struct net *net, int ifindex, return PTR_ERR(ifp); } -static int inet6_addr_del(struct net *net, int ifindex, const struct in6_addr *pfx, - unsigned int plen) +static int inet6_addr_del(struct net *net, int ifindex, u32 ifa_flags, + const struct in6_addr *pfx, unsigned int plen) { struct inet6_ifaddr *ifp; struct inet6_dev *idev; @@ -2528,7 +2528,12 @@ static int inet6_addr_del(struct net *net, int ifindex, const struct in6_addr *p in6_ifa_hold(ifp); read_unlock_bh(&idev->lock); + if (!(ifp->flags & IFA_F_TEMPORARY) && + (ifa_flags & IFA_F_MANAGETEMPADDR)) + manage_tempaddrs(idev, ifp, 0, 0, false, + jiffies); ipv6_del_addr(ifp); + addrconf_verify_rtnl(); return 0; } } @@ -2568,7 +2573,7 @@ int addrconf_del_ifaddr(struct net *net, void __user *arg) return -EFAULT; rtnl_lock(); - err = inet6_addr_del(net, ireq.ifr6_ifindex, &ireq.ifr6_addr, + err = inet6_addr_del(net, ireq.ifr6_ifindex, 0, &ireq.ifr6_addr, ireq.ifr6_prefixlen); rtnl_unlock(); return err; @@ -3743,6 +3748,7 @@ inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh) struct ifaddrmsg *ifm; struct nlattr *tb[IFA_MAX+1]; struct in6_addr *pfx, *peer_pfx; + u32 ifa_flags; int err; err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, ifa_ipv6_policy); @@ -3754,7 +3760,13 @@ inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh) if (pfx == NULL) return -EINVAL; - return inet6_addr_del(net, ifm->ifa_index, pfx, ifm->ifa_prefixlen); + ifa_flags = tb[IFA_FLAGS] ? nla_get_u32(tb[IFA_FLAGS]) : ifm->ifa_flags; + + /* We ignore other flags so far. */ + ifa_flags &= IFA_F_MANAGETEMPADDR; + + return inet6_addr_del(net, ifm->ifa_index, ifa_flags, pfx, + ifm->ifa_prefixlen); } static int inet6_addr_modify(struct inet6_ifaddr *ifp, u32 ifa_flags, |