Messages in this thread | | | Date | Thu, 10 Feb 2022 10:19:25 -0800 | Subject | Re: [PATCH] Generate netlink notification when default IPv6 route preference changes | From | David Ahern <> |
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On 2/9/22 12:38 PM, Kalash Nainwal wrote: > diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c > index f03b597e4121..fd14f5b1c767 100644 > --- a/net/ipv6/ndisc.c > +++ b/net/ipv6/ndisc.c > @@ -1337,8 +1337,12 @@ static void ndisc_router_discovery(struct sk_buff *skb) > return; > } > neigh->flags |= NTF_ROUTER; > - } else if (rt) { > + } else if (rt && IPV6_EXTRACT_PREF(rt->fib6_flags) != pref) { > + struct nl_info nlinfo = { > + .nl_net = net, > + }; > rt->fib6_flags = (rt->fib6_flags & ~RTF_PREF_MASK) | RTF_PREF(pref); > + inet6_rt_notify(RTM_NEWROUTE, rt, &nlinfo, NLM_F_CREATE); > } > > if (rt)
route exists, but the flags are updated so that should be NLM_F_REPLACE.
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