diff options
| author |   Dave Barach <dave@barachs.net> | 2019-07-23 16:28:36 -0400 |
|---|---|---|
| committer | Dave Barach <dave@barachs.net> | 2019-07-23 16:29:10 -0400 |
| commit | 3940de36728b768574a3e998389bb90d55f690d1 (patch) | |
| tree | f3c04d65748319ca38cbabce43c918f7ea745f1d /src/plugins/memif/memif_api.c | |
| parent | b725ebb3f47302c416e41c7be3f5a8bb3c9fe547 (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/plugins/memif/memif_api.c')
| -rw-r--r-- | src/plugins/memif/memif_api.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/plugins/memif/memif_api.c b/src/plugins/memif/memif_api.c index bbc9e5c7c4a..ebe7a35c820 100644 --- a/src/plugins/memif/memif_api.c +++ b/src/plugins/memif/memif_api.c @@ -209,11 +209,14 @@ vl_api_memif_delete_t_handler (vl_api_memif_delete_t * mp) vlib_main_t *vm = vlib_get_main (); vnet_main_t *vnm = vnet_get_main (); vl_api_memif_delete_reply_t *rmp; - vnet_hw_interface_t *hi = - vnet_get_sup_hw_interface (vnm, ntohl (mp->sw_if_index)); + vnet_hw_interface_t *hi; memif_if_t *mif; int rv = 0; + hi = + vnet_get_sup_hw_interface_api_visible_or_null (vnm, + ntohl (mp->sw_if_index)); + if (hi == NULL || memif_device_class.index != hi->dev_class_index) rv = VNET_API_ERROR_INVALID_SW_IF_INDEX; else |