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authorDave Barach <dave@barachs.net>2019-07-23 16:28:36 -0400
committerDave Barach <dave@barachs.net>2019-07-23 16:29:10 -0400
commit3940de36728b768574a3e998389bb90d55f690d1 (patch)
treef3c04d65748319ca38cbabce43c918f7ea745f1d /src/vnet/l2/l2_vtr.c
parentb725ebb3f47302c416e41c7be3f5a8bb3c9fe547 (diff)
api: binary api cleanup
Multiple API message handlers call vnet_get_sup_hw_interface(...) without checking the inbound sw_if_index. This can cause a pool_elt_at_index ASSERT in a debug image, and major disorder in a production image. Given that a number of places are coded as follows, add an "api_visible_or_null" variant of vnet_get_sup_hw_interface, which returns NULL given an invalid sw_if_index, or a hidden sw interface: - hw = vnet_get_sup_hw_interface (vnm, sw_if_index); + hw = vnet_get_sup_hw_interface_api_visible_or_null (vnm, sw_if_index); if (hw == NULL || memif_device_class.index != hw->dev_class_index) return clib_error_return (0, "not a memif interface"); Rename two existing xxx_safe functions -> xxx_or_null to make it obvious what they return. Type: fix Change-Id: I29996e8d0768fd9e0c5495bd91ff8bedcf2c5697 Signed-off-by: Dave Barach <dave@barachs.net>
Diffstat (limited to 'src/vnet/l2/l2_vtr.c')
-rw-r--r--src/vnet/l2/l2_vtr.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/src/vnet/l2/l2_vtr.c b/src/vnet/l2/l2_vtr.c
index aa3d5c45bee..bfd1dcb9280 100644
--- a/src/vnet/l2/l2_vtr.c
+++ b/src/vnet/l2/l2_vtr.c
@@ -61,7 +61,7 @@ l2pbb_configure (vlib_main_t * vlib_main,
l2_output_config_t *config = 0;
vnet_hw_interface_t *hi;
- hi = vnet_get_sup_hw_interface (vnet_main, sw_if_index);
+ hi = vnet_get_sup_hw_interface_api_visible_or_null (vnet_main, sw_if_index);
if (!hi)
{
@@ -149,7 +149,7 @@ l2vtr_configure (vlib_main_t * vlib_main, vnet_main_t * vnet_main, u32 sw_if_ind
u32 push_outer_et;
u32 cfg_tags;
- hi = vnet_get_sup_hw_interface (vnet_main, sw_if_index);
+ hi = vnet_get_sup_hw_interface_api_visible_or_null (vnet_main, sw_if_index);
if (!hi || (hi->hw_class_index != ethernet_hw_interface_class.index))
{
error = VNET_API_ERROR_INVALID_INTERFACE; /* non-ethernet interface */
@@ -364,7 +364,7 @@ l2vtr_get (vlib_main_t * vlib_main, vnet_main_t * vnet_main, u32 sw_if_index, u3
*vtr_tag2 = 0;
*push_dot1q = 0;
- hi = vnet_get_sup_hw_interface (vnet_main, sw_if_index);
+ hi = vnet_get_sup_hw_interface_api_visible_or_null (vnet_main, sw_if_index);
if (!hi || (hi->hw_class_index != ethernet_hw_interface_class.index))
{
/* non-ethernet interface */