diff options
| author | Erni Sri Satya Vennela <ernis@linux.microsoft.com> | 2026-03-26 10:30:56 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-03-31 19:42:06 -0700 |
| commit | d7709812e13d06132ddae3d21540472ea5cb11c5 (patch) | |
| tree | df74ce4a38159a3460f18e289f0bef0f2fb2d6b0 /tools/testing/vma/include/git@git.tavy.me:linux.git | |
| parent | e5a3f10ed7c97decd61b3274982f048b58ce69bc (diff) | |
net: mana: hardening: Validate adapter_mtu from MANA_QUERY_DEV_CONFIG
As a part of MANA hardening for CVM, validate the adapter_mtu value
returned from the MANA_QUERY_DEV_CONFIG HWC command.
The adapter_mtu value is used to compute ndev->max_mtu via:
gc->adapter_mtu - ETH_HLEN. If hardware returns a bogus adapter_mtu
smaller than ETH_HLEN (e.g. 0), the unsigned subtraction wraps to a
huge value, silently allowing oversized MTU settings.
Add a validation check to reject adapter_mtu values below
ETH_MIN_MTU + ETH_HLEN, returning -EPROTO to fail the device
configuration early with a clear error message.
Signed-off-by: Erni Sri Satya Vennela <ernis@linux.microsoft.com>
Link: https://patch.msgid.link/20260326173101.2010514-1-ernis@linux.microsoft.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools/testing/vma/include/git@git.tavy.me:linux.git')
0 files changed, 0 insertions, 0 deletions