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authorVladislav Grishenko <themiron@yandex-team.ru>2022-12-04 15:02:03 +0500
committerMatthew Smith <mgsmith@netgate.com>2022-12-15 13:19:57 +0000
commit3abb32c6fe038d757493381b9ea19c19682ca026 (patch)
treec20bd11738527235a292b3302dbb7dc0e29f6eef /src/plugins/nat/nat44-ei
parent243a0433ff05a37113d6890bbeb163bbea033687 (diff)
nat: disable nat44-ed/ei features on interface deletion
After deleting a sw interface with nat44 features, the next created sw interface will get the same sw_index reused and therefore will erroneously have the same nat features enabled. Type: fix Change-Id: I1d84f842ab7ab2a757668ae1a111efe67e1e924d Signed-off-by: Vladislav Grishenko <themiron@yandex-team.ru>
Diffstat (limited to 'src/plugins/nat/nat44-ei')
-rw-r--r--src/plugins/nat/nat44-ei/nat44_ei.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/src/plugins/nat/nat44-ei/nat44_ei.c b/src/plugins/nat/nat44-ei/nat44_ei.c
index 171ca7dcb4c..e16625a2946 100644
--- a/src/plugins/nat/nat44-ei/nat44_ei.c
+++ b/src/plugins/nat/nat44-ei/nat44_ei.c
@@ -1183,6 +1183,55 @@ nat44_ei_del_output_interfaces ()
return error;
}
+static clib_error_t *
+nat44_ei_sw_interface_add_del (vnet_main_t *vnm, u32 sw_if_index, u32 is_add)
+{
+ nat44_ei_main_t *nm = &nat44_ei_main;
+ nat44_ei_interface_t *i;
+ int error = 0;
+
+ if (is_add)
+ return 0;
+
+ if (!nm->enabled)
+ return 0;
+
+ i = nat44_ei_get_interface (nm->interfaces, sw_if_index);
+ if (i)
+ {
+ bool is_inside = nat44_ei_interface_is_inside (i);
+ bool is_outside = nat44_ei_interface_is_outside (i);
+
+ if (is_inside)
+ {
+ error |= nat44_ei_del_interface (sw_if_index, 1);
+ }
+ if (is_outside)
+ {
+ error |= nat44_ei_del_interface (sw_if_index, 0);
+ }
+
+ if (error)
+ {
+ nat44_ei_log_err ("error occurred while removing interface");
+ }
+ }
+
+ i = nat44_ei_get_interface (nm->output_feature_interfaces, sw_if_index);
+ if (i)
+ {
+ error = nat44_ei_del_output_interface (sw_if_index);
+ if (error)
+ {
+ nat44_ei_log_err ("error occurred while removing output interface");
+ }
+ }
+
+ return 0;
+}
+
+VNET_SW_INTERFACE_ADD_DEL_FUNCTION (nat44_ei_sw_interface_add_del);
+
int
nat44_ei_del_static_mappings ()
{