[LTP] [RFC PATCH v7 07/11] lib/test_net.sh: Add function reset_ltp_netspace()

[Petr Vorel <pvorel@suse.cz>]

This function is useful when we know we broke netns (e.g. by unloading
network driver).

Signed-off-by: Petr Vorel <pvorel@suse.cz>
---
 testcases/lib/test_net.sh | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/testcases/lib/test_net.sh b/testcases/lib/test_net.sh
index 0cafe1514..cecb0bab2 100644
--- a/testcases/lib/test_net.sh
+++ b/testcases/lib/test_net.sh
@@ -42,7 +42,7 @@ init_ltp_netspace()
 	export TST_INIT_NETNS="no"
 
 	pid="$(echo $(readlink /var/run/netns/ltp_ns) | cut -f3 -d'/')"
-	export LTP_NETNS="${LTP_NETNS:-ns_exec $pid net,mnt}"
+	export LTP_NETNS="ns_exec $pid net,mnt"
 
 	tst_restore_ipaddr
 	tst_restore_ipaddr rhost
@@ -50,6 +50,18 @@ init_ltp_netspace()
 	tst_wait_ipv6_dad
 }
 
+# Force to reset netns.
+reset_ltp_netspace()
+{
+	[ -n "$TST_USE_NETNS" ] || return
+
+	tst_resm TINFO "reset netns"
+	ip link delete ltp_ns_veth2 2> /dev/null
+	rm -f /var/run/netns/ltp_ns
+	pkill ns_create
+	init_ltp_netspace
+}
+
 # Run command on remote host.
 # Options:
 # -b run in background
-- 
2.13.2