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ethtool: report missing header via ext_ack in the default handler

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The actual presence check for the header is in
ethnl_parse_header_dev_get() but it's a few layers in,
and already has a ton of arguments so let's just pick
the low hanging fruit and check for missing header in
the default request handler.

Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Jakub Kicinski 2022-08-25 20:09:35 -07:00 committed by Paolo Abeni
parent 08d1d0e784
commit 4f5059e629
1 changed files with 3 additions and 0 deletions
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3
net/ethtool/netlink.c
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@ -361,6 +361,9 @@ static int ethnl_default_doit(struct sk_buff *skb, struct genl_info *info)
ops = ethnl_default_requests[cmd];
if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", cmd))
return -EOPNOTSUPP;
if (GENL_REQ_ATTR_CHECK(info, ops->hdr_attr))
return -EINVAL;
req_info = kzalloc(ops->req_info_size, GFP_KERNEL);
if (!req_info)
return -ENOMEM;