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-rw-r--r--include/linux/ieee80211.h3
-rw-r--r--include/net/cfg80211.h99
-rw-r--r--include/uapi/linux/nl80211.h28
3 files changed, 120 insertions, 10 deletions
diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 5c65ae6b8154..e15771965916 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -4376,4 +4376,7 @@ enum ieee80211_range_params_max_total_ltf {
IEEE80211_RANGE_PARAMS_MAX_TOTAL_LTF_UNSPECIFIED,
};
+/* multi-link device */
+#define IEEE80211_MLD_MAX_NUM_LINKS 15
+
#endif /* LINUX_IEEE80211_H */
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 6d02e12e4702..772e099fc932 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1158,6 +1158,7 @@ struct cfg80211_mbssid_elems {
/**
* struct cfg80211_beacon_data - beacon data
+ * @link_id: the link ID for the AP MLD link sending this beacon
* @head: head portion of beacon (before TIM IE)
* or %NULL if not changed
* @tail: tail portion of beacon (after TIM IE)
@@ -1188,6 +1189,8 @@ struct cfg80211_mbssid_elems {
* attribute is present in beacon data or not.
*/
struct cfg80211_beacon_data {
+ unsigned int link_id;
+
const u8 *head, *tail;
const u8 *beacon_ies;
const u8 *proberesp_ies;
@@ -4201,7 +4204,8 @@ struct cfg80211_ops {
struct cfg80211_ap_settings *settings);
int (*change_beacon)(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_beacon_data *info);
- int (*stop_ap)(struct wiphy *wiphy, struct net_device *dev);
+ int (*stop_ap)(struct wiphy *wiphy, struct net_device *dev,
+ unsigned int link_id);
int (*add_station)(struct wiphy *wiphy, struct net_device *dev,
@@ -4309,6 +4313,7 @@ struct cfg80211_ops {
int (*set_bitrate_mask)(struct wiphy *wiphy,
struct net_device *dev,
+ unsigned int link_id,
const u8 *peer,
const struct cfg80211_bitrate_mask *mask);
@@ -4384,6 +4389,7 @@ struct cfg80211_ops {
int (*get_channel)(struct wiphy *wiphy,
struct wireless_dev *wdev,
+ unsigned int link_id,
struct cfg80211_chan_def *chandef);
int (*start_p2p_device)(struct wiphy *wiphy,
@@ -4420,6 +4426,7 @@ struct cfg80211_ops {
struct cfg80211_qos_map *qos_map);
int (*set_ap_chanwidth)(struct wiphy *wiphy, struct net_device *dev,
+ unsigned int link_id,
struct cfg80211_chan_def *chandef);
int (*add_tx_ts)(struct wiphy *wiphy, struct net_device *dev,
@@ -4545,10 +4552,14 @@ struct cfg80211_ops {
* @WIPHY_FLAG_HAS_STATIC_WEP: The device supports static WEP key installation
* before connection.
* @WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK: The device supports bigger kek and kck keys
+ * @WIPHY_FLAG_SUPPORTS_MLO: This is a temporary flag gating the MLO APIs,
+ * in order to not have them reachable in normal drivers, until we have
+ * complete feature/interface combinations/etc. advertisement. No driver
+ * should set this flag for now.
*/
enum wiphy_flags {
WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK = BIT(0),
- /* use hole at 1 */
+ WIPHY_FLAG_SUPPORTS_MLO = BIT(1),
WIPHY_FLAG_SPLIT_SCAN_6GHZ = BIT(2),
WIPHY_FLAG_NETNS_OK = BIT(3),
WIPHY_FLAG_PS_ON_BY_DEFAULT = BIT(4),
@@ -5505,6 +5516,8 @@ static inline void wiphy_unlock(struct wiphy *wiphy)
* @netdev: (private) Used to reference back to the netdev, may be %NULL
* @identifier: (private) Identifier used in nl80211 to identify this
* wireless device if it has no netdev
+ * @connected_addr: (private) BSSID or AP MLD address if connected
+ * @connected: indicates if connected or not (STA mode)
* @current_bss: (private) Used by the internal configuration code
* @chandef: (private) Used by the internal configuration code to track
* the user-set channel definition.
@@ -5585,8 +5598,6 @@ struct wireless_dev {
u8 address[ETH_ALEN] __aligned(sizeof(u16));
/* currently used for IBSS and SME - might be rearranged later */
- u8 ssid[IEEE80211_MAX_SSID_LEN];
- u8 ssid_len, mesh_id_len, mesh_id_up_len;
struct cfg80211_conn *conn;
struct cfg80211_cached_keys *connect_keys;
enum ieee80211_bss_type conn_bss_type;
@@ -5598,20 +5609,17 @@ struct wireless_dev {
struct list_head event_list;
spinlock_t event_lock;
- struct cfg80211_internal_bss *current_bss; /* associated / joined */
- struct cfg80211_chan_def preset_chandef;
- struct cfg80211_chan_def chandef;
+ u8 connected:1;
bool ps;
int ps_timeout;
- int beacon_interval;
-
u32 ap_unexpected_nlportid;
u32 owner_nlportid;
bool nl_owner_dead;
+ /* FIXME: need to rework radar detection for MLO */
bool cac_started;
unsigned long cac_start_time;
unsigned int cac_time_ms;
@@ -5639,6 +5647,50 @@ struct wireless_dev {
struct work_struct pmsr_free_wk;
unsigned long unprot_beacon_reported;
+
+ union {
+ struct {
+ u8 connected_addr[ETH_ALEN] __aligned(2);
+ u8 ssid[IEEE80211_MAX_SSID_LEN];
+ u8 ssid_len;
+ } client;
+ struct {
+ int beacon_interval;
+ struct cfg80211_chan_def preset_chandef;
+ struct cfg80211_chan_def chandef;
+ u8 id[IEEE80211_MAX_SSID_LEN];
+ u8 id_len, id_up_len;
+ } mesh;
+ struct {
+ struct cfg80211_chan_def preset_chandef;
+ u8 ssid[IEEE80211_MAX_SSID_LEN];
+ u8 ssid_len;
+ } ap;
+ struct {
+ struct cfg80211_internal_bss *current_bss;
+ struct cfg80211_chan_def chandef;
+ int beacon_interval;
+ u8 ssid[IEEE80211_MAX_SSID_LEN];
+ u8 ssid_len;
+ } ibss;
+ struct {
+ struct cfg80211_chan_def chandef;
+ } ocb;
+ } u;
+
+ struct {
+ u8 addr[ETH_ALEN] __aligned(2);
+ union {
+ struct {
+ unsigned int beacon_interval;
+ struct cfg80211_chan_def chandef;
+ } ap;
+ struct {
+ struct cfg80211_internal_bss *current_bss;
+ } client;
+ };
+ } links[IEEE80211_MLD_MAX_NUM_LINKS];
+ u16 valid_links;
};
static inline const u8 *wdev_address(struct wireless_dev *wdev)
@@ -5668,6 +5720,31 @@ static inline void *wdev_priv(struct wireless_dev *wdev)
}
/**
+ * wdev_chandef - return chandef pointer from wireless_dev
+ * @wdev: the wdev
+ * @link_id: the link ID for MLO
+ *
+ * Return: The chandef depending on the mode, or %NULL.
+ */
+struct cfg80211_chan_def *wdev_chandef(struct wireless_dev *wdev,
+ unsigned int link_id);
+
+static inline void WARN_INVALID_LINK_ID(struct wireless_dev *wdev,
+ unsigned int link_id)
+{
+ WARN_ON(link_id && !wdev->valid_links);
+ WARN_ON(wdev->valid_links &&
+ !(wdev->valid_links & BIT(link_id)));
+}
+
+#define for_each_valid_link(wdev, link_id) \
+ for (link_id = 0; \
+ link_id < ((wdev)->valid_links ? ARRAY_SIZE((wdev)->links) : 1); \
+ link_id++) \
+ if (!(wdev)->valid_links || \
+ ((wdev)->valid_links & BIT(link_id)))
+
+/**
* DOC: Utility functions
*
* cfg80211 offers a number of utility functions that can be useful.
@@ -7882,12 +7959,14 @@ bool cfg80211_reg_can_beacon_relax(struct wiphy *wiphy,
* cfg80211_ch_switch_notify - update wdev channel and notify userspace
* @dev: the device which switched channels
* @chandef: the new channel definition
+ * @link_id: the link ID for MLO, must be 0 for non-MLO
*
* Caller must acquire wdev_lock, therefore must only be called from sleepable
* driver context!
*/
void cfg80211_ch_switch_notify(struct net_device *dev,
- struct cfg80211_chan_def *chandef);
+ struct cfg80211_chan_def *chandef,
+ unsigned int link_id);
/*
* cfg80211_ch_switch_started_notify - notify channel switch start
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 98f905f16411..a9a2c9fef295 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -324,6 +324,17 @@
*/
/**
+ * DOC: Multi-Link Operation
+ *
+ * In Multi-Link Operation, a connection between to MLDs utilizes multiple
+ * links. To use this in nl80211, various commands and responses now need
+ * to or will include the new %NL80211_ATTR_MLO_LINKS attribute.
+ * Additionally, various commands that need to operate on a specific link
+ * now need to be given the %NL80211_ATTR_MLO_LINK_ID attribute, e.g. to
+ * use %NL80211_CMD_START_AP or similar functions.
+ */
+
+/**
* enum nl80211_commands - supported nl80211 commands
*
* @NL80211_CMD_UNSPEC: unspecified command to catch errors
@@ -1237,6 +1248,12 @@
* to describe the BSSID address of the AP and %NL80211_ATTR_TIMEOUT to
* specify the timeout value.
*
+ * @NL80211_CMD_ADD_LINK: Add a new link to an interface. The
+ * %NL80211_ATTR_MLO_LINK_ID attribute is used for the new link.
+ * @NL80211_CMD_REMOVE_LINK: Remove a link from an interface. This may come
+ * without %NL80211_ATTR_MLO_LINK_ID as an easy way to remove all links
+ * in preparation for e.g. roaming to a regular (non-MLO) AP.
+ *
* @NL80211_CMD_MAX: highest used command number
* @__NL80211_CMD_AFTER_LAST: internal use
*/
@@ -1481,6 +1498,9 @@ enum nl80211_commands {
NL80211_CMD_ASSOC_COMEBACK,
+ NL80211_CMD_ADD_LINK,
+ NL80211_CMD_REMOVE_LINK,
+
/* add new commands above here */
/* used to define NL80211_CMD_MAX below */
@@ -2663,6 +2683,11 @@ enum nl80211_commands {
* association request when used with NL80211_CMD_NEW_STATION). Can be set
* only if %NL80211_STA_FLAG_WME is set.
*
+ * @NL80211_ATTR_MLO_LINK_ID: A (u8) link ID for use with MLO, to be used with
+ * various commands that need a link ID to operate.
+ * @NL80211_ATTR_MLO_LINKS: A nested array of links, each containing some
+ * per-link information and a link ID.
+ *
* @NUM_NL80211_ATTR: total number of nl80211_attrs available
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
@@ -3177,6 +3202,9 @@ enum nl80211_attrs {
NL80211_ATTR_DISABLE_EHT,
+ NL80211_ATTR_MLO_LINKS,
+ NL80211_ATTR_MLO_LINK_ID,
+
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
generated by cgit v1.2.3 (git 2.39.0) at 2024-09-13 00:21:11 +0300