On Thu, Aug 6, 2020 at 10:50 AM Hideaki Yoshifuji <hideaki.yoshif...@miraclelinux.com> wrote: > > Hi, > > 2020年8月4日(火) 0:35 Xin Long <lucien....@gmail.com>: > > > > This is to add an ip_dev_find like function for ipv6, used to find > > the dev by saddr. > > > > It will be used by TIPC protocol. So also export it. > > > > Signed-off-by: Xin Long <lucien....@gmail.com> > > --- > > include/net/addrconf.h | 2 ++ > > net/ipv6/addrconf.c | 39 +++++++++++++++++++++++++++++++++++++++ > > 2 files changed, 41 insertions(+) > > > > diff --git a/include/net/addrconf.h b/include/net/addrconf.h > > index 8418b7d..ba3f6c15 100644 > > --- a/include/net/addrconf.h > > +++ b/include/net/addrconf.h > > @@ -97,6 +97,8 @@ bool ipv6_chk_custom_prefix(const struct in6_addr *addr, > > > > int ipv6_chk_prefix(const struct in6_addr *addr, struct net_device *dev); > > > > +struct net_device *ipv6_dev_find(struct net *net, const struct in6_addr > > *addr); > > + > > How do we handle link-local addresses? This is what "if (!result)" branch meant to do:
+ if (!result) { + struct rt6_info *rt; + + rt = rt6_lookup(net, addr, NULL, 0, NULL, 0); + if (rt) { + dev = rt->dst.dev; + ip6_rt_put(rt); + } + } else { + dev = result->idev->dev; + } Thanks. > > --yoshfuji > > > struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net, > > const struct in6_addr *addr, > > struct net_device *dev, int strict); > > diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c > > index 840bfdb..857d6f9 100644 > > --- a/net/ipv6/addrconf.c > > +++ b/net/ipv6/addrconf.c > > @@ -1983,6 +1983,45 @@ int ipv6_chk_prefix(const struct in6_addr *addr, > > struct net_device *dev) > > } > > EXPORT_SYMBOL(ipv6_chk_prefix); > > > > +/** > > + * ipv6_dev_find - find the first device with a given source address. > > + * @net: the net namespace > > + * @addr: the source address > > + * > > + * The caller should be protected by RCU, or RTNL. > > + */ > > +struct net_device *ipv6_dev_find(struct net *net, const struct in6_addr > > *addr) > > +{ > > + unsigned int hash = inet6_addr_hash(net, addr); > > + struct inet6_ifaddr *ifp, *result = NULL; > > + struct net_device *dev = NULL; > > + > > + rcu_read_lock(); > > + hlist_for_each_entry_rcu(ifp, &inet6_addr_lst[hash], addr_lst) { > > + if (net_eq(dev_net(ifp->idev->dev), net) && > > + ipv6_addr_equal(&ifp->addr, addr)) { > > + result = ifp; > > + break; > > + } > > + } > > + > > + if (!result) { > > + struct rt6_info *rt; > > + > > + rt = rt6_lookup(net, addr, NULL, 0, NULL, 0); > > + if (rt) { > > + dev = rt->dst.dev; > > + ip6_rt_put(rt); > > + } > > + } else { > > + dev = result->idev->dev; > > + } > > + rcu_read_unlock(); > > + > > + return dev; > > +} > > +EXPORT_SYMBOL(ipv6_dev_find); > > + > > struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net, const struct > > in6_addr *addr, > > struct net_device *dev, int strict) > > { > > -- > > 2.1.0 > > _______________________________________________ tipc-discussion mailing list tipc-discussion@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/tipc-discussion