From: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Date: Thu, 24 Aug 2006 00:22:55 +0000 (-0700)
Subject: [IPV6] ROUTE: Purge clones on other trees when deleting a route.
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=150730d5a53b1bbb486101b2a5fb82ff0d3f916e;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[IPV6] ROUTE: Purge clones on other trees when deleting a route.

Based on MIPL2 kernel patch.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Ville Nuorvala <vnuorval@tcs.hut.fi
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index 6536e33d8353..f0fdaf182b3f 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -1169,8 +1169,18 @@ int fib6_del(struct rt6_info *rt, struct nl_info *info)
 
 	BUG_TRAP(fn->fn_flags&RTN_RTINFO);
 
-	if (!(rt->rt6i_flags&RTF_CACHE))
-		fib6_prune_clones(fn, rt);
+	if (!(rt->rt6i_flags&RTF_CACHE)) {
+		struct fib6_node *pn = fn;
+#ifdef CONFIG_IPV6_SUBTREES
+		/* clones of this route might be in another subtree */
+		if (rt->rt6i_src.plen) {
+			while (!(pn->fn_flags&RTN_ROOT))
+				pn = pn->parent;
+			pn = pn->parent;
+		}
+#endif
+		fib6_prune_clones(pn, rt);
+	}
 
 	/*
 	 *	Walk the leaf entries looking for ourself