From bead44cba8cb487d1dee88a7aff832c418657d64 Mon Sep 17 00:00:00 2001
From: Thomas Haller <thaller@redhat.com>
Date: Thu, 13 Feb 2014 21:31:37 +0100
Subject: [PATCH 1/2] route: rtnl_route_build_msg() should not overwrite the
route scope
rtnl_route_build_msg() should allow the user to set the route scope
explicitly to RT_SCOPE_NOWHERE.
This is useful for IPv4 routes, because when deleting a route,
the kernel requires the scope to match, unless the scope is set to
RT_SCOPE_NOWHERE. Thus by setting the scope to RT_SCOPE_NOWHERE,
the user can delete a route, even without knowing its scope.
rtnl_route_build_msg() should only try to guess the scope, if it was
not explicitly specified.
Signed-off-by: Thomas Haller <thaller@redhat.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
(cherry picked from commit 85ec9c7ad80c60f4f619472f2bb9d9595da93b26)
---
lib/route/route_obj.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/route/route_obj.c b/lib/route/route_obj.c
index 8f1e515..57b8f23 100644
--- a/lib/route/route_obj.c
+++ b/lib/route/route_obj.c
@@ -1194,7 +1194,7 @@ int rtnl_route_build_msg(struct nl_msg *msg, struct rtnl_route *route)
if (route->rt_src)
rtmsg.rtm_src_len = nl_addr_get_prefixlen(route->rt_src);
- if (rtmsg.rtm_scope == RT_SCOPE_NOWHERE)
+ if (!(route->ce_mask & ROUTE_ATTR_SCOPE))
rtmsg.rtm_scope = rtnl_route_guess_scope(route);
if (rtnl_route_get_nnexthops(route) == 1) {
--
1.8.5.3
From 5ee88135f410a9630321f10b8a2ea824c88b22ba Mon Sep 17 00:00:00 2001
From: Thomas Haller <thaller@redhat.com>
Date: Thu, 13 Mar 2014 13:16:51 +0100
Subject: [PATCH 2/2] utils: indicate capability
NL_CAPABILITY_ROUTE_BUILD_MSG_SET_SCOPE
This capability indicates that libnl does no longer overwrites
the route scope in rtnl_route_build_msg(), as fixed by commit
85ec9c7ad80c60f4f619472f2bb9d9595da93b26.
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Thomas Haller <thaller@redhat.com>
(cherry picked from commit 015c4ee59b786fec35118c2a963532b3e05ba5a2)
---
include/netlink/utils.h | 8 ++++++++
lib/utils.c | 9 +++++++++
2 files changed, 17 insertions(+)
diff --git a/include/netlink/utils.h b/include/netlink/utils.h
index da46a55..2094bb4 100644
--- a/include/netlink/utils.h
+++ b/include/netlink/utils.h
@@ -82,6 +82,14 @@ extern void nl_dump_line(struct nl_dump_params *, const char *, ...);
enum {
NL_CAPABILITY_NONE,
+ /**
+ * rtnl_route_build_msg() no longer guesses the route scope
+ * if explicitly set to RT_SCOPE_NOWHERE.
+ * @ingroup utils
+ */
+ NL_CAPABILITY_ROUTE_BUILD_MSG_SET_SCOPE = 1,
+#define NL_CAPABILITY_ROUTE_BUILD_MSG_SET_SCOPE NL_CAPABILITY_ROUTE_BUILD_MSG_SET_SCOPE
+
__NL_CAPABILITY_MAX
#define NL_CAPABILITY_MAX (__NL_CAPABILITY_MAX - 1)
};
diff --git a/lib/utils.c b/lib/utils.c
index 7354956..d7f6724 100644
--- a/lib/utils.c
+++ b/lib/utils.c
@@ -1129,6 +1129,15 @@ int nl_has_capability (int capability)
_NL_SETV((i), 1, (v1)) | _NL_SETV((i), 5, (v5)) | \
_NL_SETV((i), 2, (v2)) | _NL_SETV((i), 6, (v6)) | \
_NL_SETV((i), 3, (v3)) | _NL_SETV((i), 7, (v7)) )
+ _NL_SET(0,
+ NL_CAPABILITY_ROUTE_BUILD_MSG_SET_SCOPE,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0),
#undef _NL_SET
#undef _NL_SETV
#undef _NL_ASSERT
--
1.8.5.3