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nl80211: Fix the size of the maximum MAC ACL size

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NL80211_ATTR_MAC_ACL_MAX is a u32 attribute to advertise the maximum
number of MAC addresses that a device can support for MAC ACL. This was
incorrectly used as a u8 attribute which would not work with any values
larger than 255 or on big endian CPUs. Fix this by moving from
nla_get_u8() to nla_get_u32().

Fixes: 3c4ca36330 ("hostapd: Support MAC address based access control list")
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This commit is contained in:
Yu Wang 2021-01-19 16:28:28 +08:00 committed by Jouni Malinen
parent f9ca4e3107
commit f1fc9cf74e
1 changed files with 1 additions and 1 deletions
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src/drivers/driver_nl80211_capa.c
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@ -891,7 +891,7 @@ static int wiphy_info_handler(struct nl_msg *msg, void *arg)
if (tb[NL80211_ATTR_MAC_ACL_MAX])
capa->max_acl_mac_addrs =
nla_get_u8(tb[NL80211_ATTR_MAC_ACL_MAX]);
nla_get_u32(tb[NL80211_ATTR_MAC_ACL_MAX]);
wiphy_info_supported_iftypes(info, tb[NL80211_ATTR_SUPPORTED_IFTYPES]);
wiphy_info_iface_comb(info, tb[NL80211_ATTR_INTERFACE_COMBINATIONS]);