@@ -1252,6 +1252,27 @@ struct cfg80211_csa_settings {
u8 count;
};
+/**
+ * struct cfg80211_color_change_settings - color change settings
+ *
+ * Used for bss color change
+ *
+ * @beacon_color_change: beacon data while performing the color countdown
+ * @counter_offsets_beacon: offsets of the counters within the beacon (tail)
+ * @counter_offsets_presp: offsets of the counters within the probe response
+ * @beacon_next: beacon data to be used after the color change
+ * @count: number of beacons until the color change
+ * @color: the color used after the change
+ */
+struct cfg80211_color_change_settings {
+ struct cfg80211_beacon_data beacon_color_change;
+ u16 counter_offset_beacon;
+ u16 counter_offset_presp;
+ struct cfg80211_beacon_data beacon_next;
+ u8 count;
+ u8 color;
+};
+
/**
* struct iface_combination_params - input parameters for interface combinations
*
@@ -3995,6 +4016,8 @@ struct mgmt_frame_regs {
* given TIDs. This callback may sleep.
*
* @set_sar_specs: Update the SAR (TX power) settings.
+ *
+ * @color_change: Initiate a color change.
*/
struct cfg80211_ops {
int (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
@@ -4322,6 +4345,9 @@ struct cfg80211_ops {
const u8 *peer, u8 tids);
int (*set_sar_specs)(struct wiphy *wiphy,
struct cfg80211_sar_specs *sar);
+ int (*color_change)(struct wiphy *wiphy,
+ struct net_device *dev,
+ struct cfg80211_color_change_settings *params);
};
/*
@@ -8216,4 +8242,70 @@ void cfg80211_update_owe_info_event(struct net_device *netdev,
*/
void cfg80211_bss_flush(struct wiphy *wiphy);
+/**
+ * cfg80211_bss_color_notify - notify about bss color event
+ * @dev: network device
+ * @gfp: allocation flags
+ * @cmd: the actual event we want to notify
+ * @count: the number of TBTTs until the color change happens
+ * @color_bitmap: representations of the colors that the local BSS is aware of
+ */
+int cfg80211_bss_color_notify(struct net_device *dev, gfp_t gfp,
+ enum nl80211_commands cmd, u8 count,
+ u64 color_bitmap);
+
+/**
+ * cfg80211_obss_color_collision_notify - notify about bss color collision
+ * @dev: network device
+ * @color_bitmap: representations of the colors that the local BSS is aware of
+ */
+static inline int cfg80211_obss_color_collision_notify(struct net_device *dev,
+ u64 color_bitmap)
+{
+ return cfg80211_bss_color_notify(dev, GFP_KERNEL,
+ NL80211_CMD_OBSS_COLOR_COLLISION,
+ 0, color_bitmap);
+}
+
+/**
+ * cfg80211_color_change_started_notify - notify color change start
+ * @dev: the device on which the color is switched
+ * @count: the number of TBTTs until the color change happens
+ *
+ * Inform the userspace about the color change that has started.
+ */
+static inline int cfg80211_color_change_started_notify(struct net_device *dev,
+ u8 count)
+{
+ return cfg80211_bss_color_notify(dev, GFP_KERNEL,
+ NL80211_CMD_COLOR_CHANGE_STARTED,
+ count, 0);
+}
+
+/**
+ * cfg80211_color_change_aborted_notify - notify color change abort
+ * @dev: the device on which the color is switched
+ *
+ * Inform the userspace about the color change that has aborted.
+ */
+static inline int cfg80211_color_change_aborted_notify(struct net_device *dev)
+{
+ return cfg80211_bss_color_notify(dev, GFP_KERNEL,
+ NL80211_CMD_COLOR_CHANGE_ABORTED,
+ 0, 0);
+}
+
+/**
+ * cfg80211_color_change_notify - notify color change completion
+ * @dev: the device on which the color was switched
+ *
+ * Inform the userspace about the color change that has completed.
+ */
+static inline int cfg80211_color_change_notify(struct net_device *dev)
+{
+ return cfg80211_bss_color_notify(dev, GFP_KERNEL,
+ NL80211_CMD_COLOR_CHANGE_COMPLETED,
+ 0, 0);
+}
+
#endif /* __NET_CFG80211_H */
@@ -1185,6 +1185,21 @@
* passed using %NL80211_ATTR_SAR_SPEC. %NL80211_ATTR_WIPHY is used to
* specify the wiphy index to be applied to.
*
+ * @NL80211_CMD_OBSS_COLOR_COLLISION: This notification is sent out whenever
+ * mac80211/drv detects a bss color collision.
+ *
+ * @NL80211_CMD_COLOR_CHANGE_REQUEST: This command is used to indicate that
+ * userspace wants to change the BSS color.
+ *
+ * @NL80211_CMD_COLOR_CHANGE_STARTED: Notify userland, that a color change has
+ * started
+ *
+ * @NL80211_CMD_COLOR_CHANGE_ABORTED: Notify userland, that the color change has
+ * been aborted
+ *
+ * @NL80211_CMD_COLOR_CHANGE_COMPLETED: Notify userland that the color change
+ * has completed
+ *
* @NL80211_CMD_MAX: highest used command number
* @__NL80211_CMD_AFTER_LAST: internal use
*/
@@ -1417,6 +1432,14 @@ enum nl80211_commands {
NL80211_CMD_SET_SAR_SPECS,
+ NL80211_CMD_OBSS_COLOR_COLLISION,
+
+ NL80211_CMD_COLOR_CHANGE_REQUEST,
+
+ NL80211_CMD_COLOR_CHANGE_STARTED,
+ NL80211_CMD_COLOR_CHANGE_ABORTED,
+ NL80211_CMD_COLOR_CHANGE_COMPLETED,
+
/* add new commands above here */
/* used to define NL80211_CMD_MAX below */
@@ -2560,6 +2583,16 @@ enum nl80211_commands {
* disassoc events to indicate that an immediate reconnect to the AP
* is desired.
*
+ * @NL80211_ATTR_OBSS_COLOR_BITMAP: bitmap of the u64 BSS colors for the
+ * %NL80211_CMD_OBSS_COLOR_COLLISION event.
+ *
+ * @NL80211_ATTR_COLOR_CHANGE_COUNT: u8 attribute specifying the number of TBTT's
+ * until the color switch event.
+ * @NL80211_ATTR_COLOR_CHANGE_COLOR: u8 attribute specifying the color that we are
+ * switching to
+ * @NL80211_ATTR_COLOR_CHANGE_ELEMS: Nested set of attributes containing the IE
+ * information for the time while performing a color switch.
+ *
* @NUM_NL80211_ATTR: total number of nl80211_attrs available
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
@@ -3057,6 +3090,12 @@ enum nl80211_attrs {
NL80211_ATTR_DISABLE_HE,
+ NL80211_ATTR_OBSS_COLOR_BITMAP,
+
+ NL80211_ATTR_COLOR_CHANGE_COUNT,
+ NL80211_ATTR_COLOR_CHANGE_COLOR,
+ NL80211_ATTR_COLOR_CHANGE_ELEMS,
+
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
@@ -5953,6 +5992,9 @@ enum nl80211_feature_flags {
* frame protection for all management frames exchanged during the
* negotiation and range measurement procedure.
*
+ * @NL80211_EXT_FEATURE_BSS_COLOR: The driver supports BSS color collision
+ * detection and change announcemnts.
+ *
* @NUM_NL80211_EXT_FEATURES: number of extended features.
* @MAX_NL80211_EXT_FEATURES: highest extended feature index.
*/
@@ -6017,6 +6059,7 @@ enum nl80211_ext_feature_index {
NL80211_EXT_FEATURE_SECURE_LTF,
NL80211_EXT_FEATURE_SECURE_RTT,
NL80211_EXT_FEATURE_PROT_RANGE_NEGO_AND_MEASURE,
+ NL80211_EXT_FEATURE_BSS_COLOR,
/* add new features before the definition below */
NUM_NL80211_EXT_FEATURES,
@@ -759,6 +759,10 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
[NL80211_ATTR_RECONNECT_REQUESTED] = { .type = NLA_REJECT },
[NL80211_ATTR_SAR_SPEC] = NLA_POLICY_NESTED(sar_policy),
[NL80211_ATTR_DISABLE_HE] = { .type = NLA_FLAG },
+ [NL80211_ATTR_OBSS_COLOR_BITMAP] = { .type = NLA_U64 },
+ [NL80211_ATTR_COLOR_CHANGE_COUNT] = { .type = NLA_U8 },
+ [NL80211_ATTR_COLOR_CHANGE_COLOR] = { .type = NLA_U8 },
+ [NL80211_ATTR_COLOR_CHANGE_ELEMS] = NLA_POLICY_NESTED(nl80211_policy),
};
/* policy for the key attributes */
@@ -14800,6 +14804,106 @@ static int nl80211_set_tid_config(struct sk_buff *skb,
return ret;
}
+static int nl80211_color_change(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct cfg80211_color_change_settings params = {};
+ struct net_device *dev = info->user_ptr[1];
+ struct wireless_dev *wdev = dev->ieee80211_ptr;
+ struct nlattr **tb = NULL;
+ u16 offset;
+ int err;
+
+ if (!rdev->ops->color_change)
+ return -EOPNOTSUPP;
+
+ if (!wiphy_ext_feature_isset(&rdev->wiphy,
+ NL80211_EXT_FEATURE_BSS_COLOR))
+ return -EOPNOTSUPP;
+
+ if (wdev->iftype != NL80211_IFTYPE_AP)
+ return -EOPNOTSUPP;
+
+ if (!info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT] ||
+ !info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR] ||
+ !info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS])
+ return -EINVAL;
+
+ params.count = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COUNT]);
+ params.color = nla_get_u8(info->attrs[NL80211_ATTR_COLOR_CHANGE_COLOR]);
+
+ err = nl80211_parse_beacon(rdev, info->attrs, ¶ms.beacon_next);
+ if (err)
+ return err;
+
+ tb = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*tb), GFP_KERNEL);
+ if (!tb)
+ return -ENOMEM;
+
+ err = nla_parse_nested(tb, NL80211_ATTR_MAX,
+ info->attrs[NL80211_ATTR_COLOR_CHANGE_ELEMS],
+ nl80211_policy, info->extack);
+ if (err)
+ goto out;
+
+ err = nl80211_parse_beacon(rdev, tb, ¶ms.beacon_color_change);
+ if (err)
+ goto out;
+
+ if (!tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]) != sizeof(u16)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
+ if (offset >= params.beacon_color_change.tail_len) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (params.beacon_color_change.tail[offset] != params.count) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ params.counter_offset_beacon = offset;
+
+ if (tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
+ if (nla_len(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]) !=
+ sizeof(u16)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ offset = nla_get_u16(tb[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
+ if (offset >= params.beacon_color_change.probe_resp_len) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ if (params.beacon_color_change.probe_resp[offset] !=
+ params.count) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ params.counter_offset_presp = offset;
+ }
+
+ wdev_lock(wdev);
+ err = rdev_color_change(rdev, dev, ¶ms);
+ wdev_unlock(wdev);
+
+out:
+ kfree(tb);
+ return err;
+}
+
#define NL80211_FLAG_NEED_WIPHY 0x01
#define NL80211_FLAG_NEED_NETDEV 0x02
#define NL80211_FLAG_NEED_RTNL 0x04
@@ -15798,6 +15902,14 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.internal_flags = NL80211_FLAG_NEED_WIPHY |
NL80211_FLAG_NEED_RTNL,
},
+ {
+ .cmd = NL80211_CMD_COLOR_CHANGE_REQUEST,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = nl80211_color_change,
+ .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 = {
@@ -17427,6 +17539,51 @@ void cfg80211_ch_switch_started_notify(struct net_device *dev,
}
EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
+int cfg80211_bss_color_notify(struct net_device *dev, gfp_t gfp,
+ enum nl80211_commands cmd, u8 count,
+ u64 color_bitmap)
+{
+ struct wireless_dev *wdev = dev->ieee80211_ptr;
+ struct wiphy *wiphy = wdev->wiphy;
+ struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
+ struct sk_buff *msg;
+ void *hdr;
+
+ ASSERT_WDEV_LOCK(wdev);
+
+ trace_cfg80211_bss_color_notify(dev, cmd, count, color_bitmap);
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
+ if (!msg)
+ return -ENOMEM;
+
+ hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
+ if (!hdr)
+ goto nla_put_failure;
+
+ if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
+ goto nla_put_failure;
+
+ if (cmd == NL80211_CMD_COLOR_CHANGE_STARTED &&
+ nla_put_u32(msg, NL80211_ATTR_COLOR_CHANGE_COUNT, count))
+ goto nla_put_failure;
+
+ if (cmd == NL80211_CMD_OBSS_COLOR_COLLISION &&
+ nla_put_u64_64bit(msg, NL80211_ATTR_OBSS_COLOR_BITMAP,
+ color_bitmap, NL80211_ATTR_PAD))
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+
+ return genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
+ msg, 0, NL80211_MCGRP_MLME, gfp);
+
+nla_put_failure:
+ nlmsg_free(msg);
+ return -EINVAL;
+}
+EXPORT_SYMBOL(cfg80211_bss_color_notify);
+
void
nl80211_radar_notify(struct cfg80211_registered_device *rdev,
const struct cfg80211_chan_def *chandef,
@@ -1368,4 +1368,17 @@ static inline int rdev_set_sar_specs(struct cfg80211_registered_device *rdev,
return ret;
}
+static inline int rdev_color_change(struct cfg80211_registered_device *rdev,
+ struct net_device *dev,
+ struct cfg80211_color_change_settings *params)
+{
+ int ret;
+
+ trace_rdev_color_change(&rdev->wiphy, dev, params);
+ ret = rdev->ops->color_change(&rdev->wiphy, dev, params);
+ trace_rdev_return_int(&rdev->wiphy, ret);
+
+ return ret;
+}
+
#endif /* __CFG80211_RDEV_OPS */
@@ -3597,6 +3597,52 @@ TRACE_EVENT(rdev_set_sar_specs,
WIPHY_PR_ARG, __entry->type, __entry->num)
);
+TRACE_EVENT(rdev_color_change,
+ TP_PROTO(struct wiphy *wiphy, struct net_device *netdev,
+ struct cfg80211_color_change_settings *params),
+ TP_ARGS(wiphy, netdev, params),
+ TP_STRUCT__entry(
+ WIPHY_ENTRY
+ NETDEV_ENTRY
+ __field(u8, count)
+ __field(u16, bcn_ofs)
+ __field(u16, pres_ofs)
+ ),
+ TP_fast_assign(
+ WIPHY_ASSIGN;
+ NETDEV_ASSIGN;
+ __entry->count = params->count;
+ __entry->bcn_ofs = params->counter_offset_beacon;
+ __entry->pres_ofs = params->counter_offset_presp;
+ ),
+ TP_printk(WIPHY_PR_FMT ", " NETDEV_PR_FMT
+ ", count: %u",
+ WIPHY_PR_ARG, NETDEV_PR_ARG,
+ __entry->count)
+);
+
+TRACE_EVENT(cfg80211_bss_color_notify,
+ TP_PROTO(struct net_device *netdev,
+ enum nl80211_commands cmd,
+ u8 count, u64 color_bitmap),
+ TP_ARGS(netdev, cmd, count, color_bitmap),
+ TP_STRUCT__entry(
+ NETDEV_ENTRY
+ __field(enum nl80211_bss_scan_width, cmd)
+ __field(u8, count)
+ __field(u64, color_bitmap)
+ ),
+ TP_fast_assign(
+ NETDEV_ASSIGN;
+ __entry->cmd = cmd;
+ __entry->count = count;
+ __entry->color_bitmap = color_bitmap;
+ ),
+ TP_printk(NETDEV_PR_FMT ", cmd: %x, count: %u, bitmap: %llx",
+ NETDEV_PR_ARG, __entry->cmd, __entry->count,
+ __entry->color_bitmap)
+);
+
#endif /* !__RDEV_OPS_TRACE || TRACE_HEADER_MULTI_READ */
#undef TRACE_INCLUDE_PATH