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authorDave Barach <dave@barachs.net>2019-07-23 16:28:36 -0400
committerDave Barach <dave@barachs.net>2019-07-24 08:14:39 -0400
commitb71b5ffbfb2ddbad408a22ef17046dfe5fea1cad (patch)
tree73490766e73d335ae722f45c89b092cfcd707b34 /src/vnet/l2
parent9fb50d83dbe22cab30532cec8c85e711af1f82ff (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> (cherry picked from commit 3940de36728b768574a3e998389bb90d55f690d1)
Diffstat (limited to 'src/vnet/l2')
-rw-r--r--src/vnet/l2/l2_fib.c5
-rw-r--r--src/vnet/l2/l2_vtr.c6
2 files changed, 6 insertions, 5 deletions
diff --git a/src/vnet/l2/l2_fib.c b/src/vnet/l2/l2_fib.c
index fc518fe9dbf..04fd975c319 100644
--- a/src/vnet/l2/l2_fib.c
+++ b/src/vnet/l2/l2_fib.c
@@ -95,12 +95,13 @@ format_vnet_sw_if_index_name_with_NA (u8 * s, va_list * args)
if (sw_if_index == ~0)
return format (s, "N/A");
- vnet_sw_interface_t *swif = vnet_get_sw_interface_safe (vnm, sw_if_index);
+ vnet_sw_interface_t *swif =
+ vnet_get_sw_interface_or_null (vnm, sw_if_index);
if (!swif)
return format (s, "Stale");
return format (s, "%U", format_vnet_sw_interface_name, vnm,
- vnet_get_sw_interface_safe (vnm, sw_if_index));
+ vnet_get_sw_interface_or_null (vnm, sw_if_index));
}
typedef struct l2fib_dump_walk_ctx_t_
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 */