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    Subject[PATCH 4.14 12/49] net: ieee802154: forbid monitor for add llsec dev
    Date
    From: Alexander Aring <aahringo@redhat.com>

    [ Upstream commit 5303f956b05a2886ff42890908156afaec0f95ac ]

    This patch forbids to add llsec dev for monitor interfaces which we
    don't support yet. Otherwise we will access llsec mib which isn't
    initialized for monitors.

    Signed-off-by: Alexander Aring <aahringo@redhat.com>
    Link: https://lore.kernel.org/r/20210405003054.256017-8-aahringo@redhat.com
    Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    net/ieee802154/nl802154.c | 3 +++
    1 file changed, 3 insertions(+)

    diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c
    index 6a45838fd1b3..d1e309de88b6 100644
    --- a/net/ieee802154/nl802154.c
    +++ b/net/ieee802154/nl802154.c
    @@ -1785,6 +1785,9 @@ static int nl802154_add_llsec_dev(struct sk_buff *skb, struct genl_info *info)
    struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
    struct ieee802154_llsec_device dev_desc;

    + if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR)
    + return -EOPNOTSUPP;
    +
    if (ieee802154_llsec_parse_device(info->attrs[NL802154_ATTR_SEC_DEVICE],
    &dev_desc) < 0)
    return -EINVAL;
    --
    2.30.2


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