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cfg80211: Specify frame and reason code for NL80211_CMD_DEL_STATION

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The optional NL80211_ATTR_MGMT_SUBTYPE and NL80211_ATTR_REASON_CODE
attributes can now be included in NL80211_CMD_DEL_STATION to indicate to
the driver which frame (Deauthentication/Disassociation) and reason code
in that frame should be used to indicate removal to the specific
station. This is used by drivers that implement AP SME and generate
those frames internally.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Jouni Malinen 2014-10-20 13:20:45 +03:00 committed by Johannes Berg
parent 89c771e5a6
commit 988568669d
4 changed files with 39 additions and 3 deletions
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5
include/net/cfg80211.h
View File

@ -804,9 +804,14 @@ struct station_parameters {
* Used to delete a station entry (or all stations).
*
* @mac: MAC address of the station to remove or NULL to remove all stations
* @subtype: Management frame subtype to use for indicating removal
* (10 = Disassociation, 12 = Deauthentication)
* @reason_code: Reason code for the Disassociation/Deauthentication frame
*/
struct station_del_parameters {
const u8 *mac;
u8 subtype;
u16 reason_code;
};
/**

6
include/uapi/linux/nl80211.h
View File

@ -227,7 +227,11 @@
* the interface identified by %NL80211_ATTR_IFINDEX.
* @NL80211_CMD_DEL_STATION: Remove a station identified by %NL80211_ATTR_MAC
* or, if no MAC address given, all stations, on the interface identified
* by %NL80211_ATTR_IFINDEX.
* by %NL80211_ATTR_IFINDEX. %NL80211_ATTR_MGMT_SUBTYPE and
* %NL80211_ATTR_REASON_CODE can optionally be used to specify which type
* of disconnection indication should be sent to the station
* (Deauthentication or Disassociation frame and reason code for that
* frame).
*
* @NL80211_CMD_GET_MPATH: Get mesh path attributes for mesh path to
* destination %NL80211_ATTR_MAC on the interface identified by

21
net/wireless/nl80211.c
View File

@ -4414,6 +4414,27 @@ static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
if (!rdev->ops->del_station)
return -EOPNOTSUPP;
if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
params.subtype =
nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
return -EINVAL;
} else {
/* Default to Deauthentication frame */
params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
}
if (info->attrs[NL80211_ATTR_REASON_CODE]) {
params.reason_code =
nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
if (params.reason_code == 0)
return -EINVAL; /* 0 is reserved */
} else {
/* Default to reason code 2 */
params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
}
return rdev_del_station(rdev, dev, &params);
}

10
net/wireless/trace.h
View File

@ -688,14 +688,20 @@ DECLARE_EVENT_CLASS(station_del,
WIPHY_ENTRY
NETDEV_ENTRY
MAC_ENTRY(sta_mac)
__field(u8, subtype)
__field(u16, reason_code)
),
TP_fast_assign(
WIPHY_ASSIGN;
NETDEV_ASSIGN;
MAC_ASSIGN(sta_mac, params->mac);
__entry->subtype = params->subtype;
__entry->reason_code = params->reason_code;
),
TP_printk(WIPHY_PR_FMT ", " NETDEV_PR_FMT ", station mac: " MAC_PR_FMT,
WIPHY_PR_ARG, NETDEV_PR_ARG, MAC_PR_ARG(sta_mac))
TP_printk(WIPHY_PR_FMT ", " NETDEV_PR_FMT ", station mac: " MAC_PR_FMT
", subtype: %u, reason_code: %u",
WIPHY_PR_ARG, NETDEV_PR_ARG, MAC_PR_ARG(sta_mac),
__entry->subtype, __entry->reason_code)
);
DEFINE_EVENT(station_del, rdev_del_station,