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-rw-r--r--include/net/cfg80211.h9
-rw-r--r--include/uapi/linux/nl80211.h3
-rw-r--r--net/wireless/nl80211.c71
-rw-r--r--net/wireless/rdev-ops.h15
-rw-r--r--net/wireless/trace.h26
5 files changed, 123 insertions, 1 deletions
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index df145f7..de2894a 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -2961,6 +2961,9 @@ struct cfg80211_external_auth_params {
*
* @external_auth: indicates result of offloaded authentication processing from
* user space
+ *
+ * @tx_control_port: TX a control port frame (EAPoL). The noencrypt parameter
+ * tells the driver that the frame should not be encrypted.
*/
struct cfg80211_ops {
int (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
@@ -3256,6 +3259,12 @@ struct cfg80211_ops {
const u8 *aa);
int (*external_auth)(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_external_auth_params *params);
+
+ int (*tx_control_port)(struct wiphy *wiphy,
+ struct net_device *dev,
+ const u8 *buf, size_t len,
+ const u8 *dest, const __be16 proto,
+ const bool noencrypt);
};
/*
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 6a3cc7a..3167d6f 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -5024,6 +5024,8 @@ enum nl80211_feature_flags {
* channel change triggered by radar detection event.
* No need to start CAC from user-space, no need to react to
* "radar detected" event.
+ * @NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211: Driver supports sending and
+ * receiving control port frames over nl80211 instead of the netdevice.
*
* @NUM_NL80211_EXT_FEATURES: number of extended features.
* @MAX_NL80211_EXT_FEATURES: highest extended feature index.
@@ -5055,6 +5057,7 @@ enum nl80211_ext_feature_index {
NL80211_EXT_FEATURE_LOW_POWER_SCAN,
NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN,
NL80211_EXT_FEATURE_DFS_OFFLOAD,
+ NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211,
/* add new features before the definition below */
NUM_NL80211_EXT_FEATURES,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 0870447..6eb2867 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -12535,6 +12535,68 @@ static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
return rdev_external_auth(rdev, dev, &params);
}
+static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
+ struct wireless_dev *wdev = dev->ieee80211_ptr;
+ const u8 *buf;
+ size_t len;
+ u8 *dest;
+ u16 proto;
+ bool noencrypt;
+ int err;
+
+ if (!wiphy_ext_feature_isset(&rdev->wiphy,
+ NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
+ return -EOPNOTSUPP;
+
+ if (!rdev->ops->tx_control_port)
+ return -EOPNOTSUPP;
+
+ if (!info->attrs[NL80211_ATTR_FRAME] ||
+ !info->attrs[NL80211_ATTR_MAC] ||
+ !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
+ GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
+ return -EINVAL;
+ }
+
+ wdev_lock(wdev);
+
+ switch (wdev->iftype) {
+ case NL80211_IFTYPE_AP:
+ case NL80211_IFTYPE_P2P_GO:
+ case NL80211_IFTYPE_MESH_POINT:
+ break;
+ case NL80211_IFTYPE_ADHOC:
+ case NL80211_IFTYPE_STATION:
+ case NL80211_IFTYPE_P2P_CLIENT:
+ if (wdev->current_bss)
+ break;
+ err = -ENOTCONN;
+ goto out;
+ default:
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ wdev_unlock(wdev);
+
+ buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
+ len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
+ dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
+ proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
+ noencrypt =
+ nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
+
+ return rdev_tx_control_port(rdev, dev, buf, len,
+ dest, cpu_to_be16(proto), noencrypt);
+
+ out:
+ wdev_unlock(wdev);
+ return err;
+}
+
#define NL80211_FLAG_NEED_WIPHY 0x01
#define NL80211_FLAG_NEED_NETDEV 0x02
#define NL80211_FLAG_NEED_RTNL 0x04
@@ -13438,7 +13500,14 @@ static const struct genl_ops nl80211_ops[] = {
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
NL80211_FLAG_NEED_RTNL,
},
-
+ {
+ .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
+ .doit = nl80211_tx_control_port,
+ .policy = nl80211_policy,
+ .flags = GENL_UNS_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
+ NL80211_FLAG_NEED_RTNL,
+ },
};
static struct genl_family nl80211_fam __ro_after_init = {
diff --git a/net/wireless/rdev-ops.h b/net/wireless/rdev-ops.h
index 84f23ae..87479a5 100644
--- a/net/wireless/rdev-ops.h
+++ b/net/wireless/rdev-ops.h
@@ -714,6 +714,21 @@ static inline int rdev_mgmt_tx(struct cfg80211_registered_device *rdev,
return ret;
}
+static inline int rdev_tx_control_port(struct cfg80211_registered_device *rdev,
+ struct net_device *dev,
+ const void *buf, size_t len,
+ const u8 *dest, __be16 proto,
+ const bool noencrypt)
+{
+ int ret;
+ trace_rdev_tx_control_port(&rdev->wiphy, dev, buf, len,
+ dest, proto, noencrypt);
+ ret = rdev->ops->tx_control_port(&rdev->wiphy, dev, buf, len,
+ dest, proto, noencrypt);
+ trace_rdev_return_int(&rdev->wiphy, ret);
+ return ret;
+}
+
static inline int
rdev_mgmt_tx_cancel_wait(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev, u64 cookie)
diff --git a/net/wireless/trace.h b/net/wireless/trace.h
index 42fd338..a64291a 100644
--- a/net/wireless/trace.h
+++ b/net/wireless/trace.h
@@ -1882,6 +1882,32 @@ TRACE_EVENT(rdev_mgmt_tx,
BOOL_TO_STR(__entry->dont_wait_for_ack))
);
+TRACE_EVENT(rdev_tx_control_port,
+ TP_PROTO(struct wiphy *wiphy, struct net_device *netdev,
+ const u8 *buf, size_t len, const u8 *dest, __be16 proto,
+ bool unencrypted),
+ TP_ARGS(wiphy, netdev, buf, len, dest, proto, unencrypted),
+ TP_STRUCT__entry(
+ WIPHY_ENTRY
+ NETDEV_ENTRY
+ MAC_ENTRY(dest)
+ __field(__be16, proto)
+ __field(bool, unencrypted)
+ ),
+ TP_fast_assign(
+ WIPHY_ASSIGN;
+ NETDEV_ASSIGN;
+ MAC_ASSIGN(dest, dest);
+ __entry->proto = proto;
+ __entry->unencrypted = unencrypted;
+ ),
+ TP_printk(WIPHY_PR_FMT ", " NETDEV_PR_FMT ", " MAC_PR_FMT ","
+ " proto: 0x%x, unencrypted: %s",
+ WIPHY_PR_ARG, NETDEV_PR_ARG, MAC_PR_ARG(dest),
+ be16_to_cpu(__entry->proto),
+ BOOL_TO_STR(__entry->unencrypted))
+);
+
TRACE_EVENT(rdev_set_noack_map,
TP_PROTO(struct wiphy *wiphy, struct net_device *netdev,
u16 noack_map),
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