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author | Larysa Zaremba <larysa.zaremba@intel.com> | 2023-12-05 22:08:42 +0100 |
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committer | Alexei Starovoitov <ast@kernel.org> | 2023-12-13 16:16:41 -0800 |
commit | 537fec0733c4a72e2a2b69fee365459c5b75d92e (patch) | |
tree | 037548b81a240152a2d37ad07a9a2a3ed3e930f8 /include/linux/mlx5 | |
parent | fca783799f64ac0a4f20228ff6a6d7598db11e64 (diff) | |
download | linux-stable-537fec0733c4a72e2a2b69fee365459c5b75d92e.tar.gz linux-stable-537fec0733c4a72e2a2b69fee365459c5b75d92e.tar.bz2 linux-stable-537fec0733c4a72e2a2b69fee365459c5b75d92e.zip |
net: make vlan_get_tag() return -ENODATA instead of -EINVAL
__vlan_hwaccel_get_tag() is used in veth XDP hints implementation,
its return value (-EINVAL if skb is not VLAN tagged) is passed to bpf code,
but XDP hints specification requires drivers to return -ENODATA, if a hint
cannot be provided for a particular packet.
Solve this inconsistency by changing error return value of
__vlan_hwaccel_get_tag() from -EINVAL to -ENODATA, do the same thing to
__vlan_get_tag(), because this function is supposed to follow the same
convention. This, in turn, makes -ENODATA the only non-zero value
vlan_get_tag() can return. We can do this with no side effects, because
none of the users of the 3 above-mentioned functions rely on the exact
value.
Suggested-by: Jesper Dangaard Brouer <jbrouer@redhat.com>
Acked-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Larysa Zaremba <larysa.zaremba@intel.com>
Link: https://lore.kernel.org/r/20231205210847.28460-14-larysa.zaremba@intel.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include/linux/mlx5')
0 files changed, 0 insertions, 0 deletions