This patch adds support for passing the multiple bssid config to the
kernel when an AP gets started. If the BSS is non-transmitting we need
to pass
* the ifidx of the transmitting parent
* the BSS index in the set
* the BSS count of the set
* flag indicating if we want to do EMA
* the multiple bssid elements as an array inside the beacon data
This allows use to generate multiple bssid beacons aswell as EMA ones.
Signed-off-by: Aloka Dixit <alokad@xxxxxxxxxxxxxx>
Signed-off-by: John Crispin <john@xxxxxxxxxxx>
---
include/net/cfg80211.h | 33 +++++++++++++++++++++++++++++++++
include/uapi/linux/nl80211.h | 21 +++++++++++++++++++++
net/wireless/nl80211.c | 34 ++++++++++++++++++++++++++++++++++
3 files changed, 88 insertions(+)
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 661edfc8722e..0be0c11c95fd 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -497,6 +497,21 @@ struct ieee80211_supported_band {
const struct ieee80211_sband_iftype_data *iftype_data;
};
+/**
+ * struct ieee80211_multiple_bssid - AP settings for multi bssid
+ *
+ * @index: the index of this AP in the multi bssid group.
+ * @count: the total number of multi bssid peer APs.
+ * @parent: non-transmitted BSSs transmitted parents index
+ * @ema: Shall the beacons be sent out in EMA mode.
+ */
+struct ieee80211_multiple_bssid {
+ u8 index;
+ u8 count;
+ u32 parent;
+ bool ema;
+};
+
/**
* ieee80211_get_sband_iftype_data - return sband data for a given iftype
* @sband: the sband to search for the STA on
@@ -1028,6 +1043,19 @@ struct cfg80211_crypto_settings {
u8 sae_pwd_len;
};
+/**
+ * struct cfg80211_multiple_bssid_data - multiple_bssid data
+ * @ies: array of extra information element(s) to add into Beacon frames for multiple
+ * bssid or %NULL
+ * @len: array of lengths of multiple_bssid.ies in octets
+ * @cnt: number of entries in multiple_bssid.ies
+ */
+struct cfg80211_multiple_bssid_data {
+ u8 *ies[NL80211_MULTIPLE_BSSID_IES_MAX];
+ size_t len[NL80211_MULTIPLE_BSSID_IES_MAX];
+ int cnt;
+};
+
/**
* struct cfg80211_beacon_data - beacon data
* @head: head portion of beacon (before TIM IE)
@@ -1054,6 +1082,7 @@ struct cfg80211_crypto_settings {
* Token (measurement type 11)
* @lci_len: LCI data length
* @civicloc_len: Civic location data length
+ * @multiple_bssid: multiple_bssid data
*/
struct cfg80211_beacon_data {
const u8 *head, *tail;
@@ -1072,6 +1101,8 @@ struct cfg80211_beacon_data {
size_t probe_resp_len;
size_t lci_len;
size_t civicloc_len;
+
+ struct cfg80211_multiple_bssid_data multiple_bssid;
};
struct mac_address {
@@ -1176,6 +1207,7 @@ enum cfg80211_ap_settings_flags {
* @he_oper: HE operation IE (or %NULL if HE isn't enabled)
* @fils_discovery: FILS discovery transmission parameters
* @unsol_bcast_probe_resp: Unsolicited broadcast probe response parameters
+ * @multiple_bssid: AP settings for multiple bssid
*/
struct cfg80211_ap_settings {
struct cfg80211_chan_def chandef;
@@ -1208,6 +1240,7 @@ struct cfg80211_ap_settings {
struct cfg80211_he_bss_color he_bss_color;
struct cfg80211_fils_discovery fils_discovery;
struct cfg80211_unsol_bcast_probe_resp unsol_bcast_probe_resp;
+ struct ieee80211_multiple_bssid multiple_bssid;
};
/**
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 47700a2b9af9..91b338b0b9cb 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -2527,6 +2527,19 @@ enum nl80211_commands {
* override mask. Used with NL80211_ATTR_S1G_CAPABILITY in
* NL80211_CMD_ASSOCIATE or NL80211_CMD_CONNECT.
*
+ * @NL80211_ATTR_MULTIPLE_BSSID_PARENT: If this is a Non-Transmitted BSSID, define
+ * the parent (transmitting) interface.
+ *
+ * @NL80211_ATTR_MULTIPLE_BSSID_INDEX: The index of this BSS inside the multi bssid
+ * element.
+ *
+ * @NL80211_ATTR_MULTIPLE_BSSID_COUNT: The number of BSSs inside the multi bssid element.
+ *
+ * @NL80211_ATTR_MULTIPLE_BSSID_IES: The Elements that describe our multiple BSS group.
+ * these get passed separately as the kernel might need to split them up for EMA VAP.
+ *
+ * @NL80211_ATTR_MULTIPLE_BSSID_EMA: Shall the multiple BSS beacons be sent out in EMA mode.
+ *
* @NUM_NL80211_ATTR: total number of nl80211_attrs available
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
@@ -3016,6 +3029,12 @@ enum nl80211_attrs {
NL80211_ATTR_S1G_CAPABILITY,
NL80211_ATTR_S1G_CAPABILITY_MASK,
+ NL80211_ATTR_MULTIPLE_BSSID_PARENT,
+ NL80211_ATTR_MULTIPLE_BSSID_INDEX,
+ NL80211_ATTR_MULTIPLE_BSSID_COUNT,
+ NL80211_ATTR_MULTIPLE_BSSID_IES,
+ NL80211_ATTR_MULTIPLE_BSSID_EMA,
+
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
@@ -3079,6 +3098,8 @@ enum nl80211_attrs {
#define NL80211_CQM_TXE_MAX_INTVL 1800
+#define NL80211_MULTIPLE_BSSID_IES_MAX 8
+
/**
* enum nl80211_iftype - (virtual) interface types
*
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 554796a6c6fe..45765d033d05 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -715,6 +715,11 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
[NL80211_ATTR_S1G_CAPABILITY_MASK] =
NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
+ [NL80211_ATTR_MULTIPLE_BSSID_PARENT] = { .type = NLA_U32 },
+ [NL80211_ATTR_MULTIPLE_BSSID_INDEX] = { .type = NLA_U8 },
+ [NL80211_ATTR_MULTIPLE_BSSID_COUNT] = NLA_POLICY_RANGE(NLA_U8, 1, 16),
+ [NL80211_ATTR_MULTIPLE_BSSID_IES] = { .type = NLA_NESTED },
+ [NL80211_ATTR_MULTIPLE_BSSID_EMA] = { .type = NLA_FLAG },
};
/* policy for the key attributes */
@@ -4867,6 +4872,21 @@ static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
bcn->ftm_responder = -1;
}
+ if (attrs[NL80211_ATTR_MULTIPLE_BSSID_IES]) {
+ struct nlattr *nl_ie;
+ int rem_ie;
+
+ nla_for_each_nested(nl_ie, attrs[NL80211_ATTR_MULTIPLE_BSSID_IES], rem_ie) {
+ if (bcn->multiple_bssid.cnt > NL80211_MULTIPLE_BSSID_IES_MAX)
+ return -EINVAL;
+ if (nla_type(nl_ie) != bcn->multiple_bssid.cnt + 1)
+ return -EINVAL;
+ bcn->multiple_bssid.ies[bcn->multiple_bssid.cnt] = nla_data(nl_ie);
+ bcn->multiple_bssid.len[bcn->multiple_bssid.cnt] = nla_len(nl_ie);
+ bcn->multiple_bssid.cnt++;
+ }
+ }
+
return 0;
}
@@ -5321,6 +5341,20 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
return err;
}
+ if (info->attrs[NL80211_ATTR_MULTIPLE_BSSID_PARENT])
+ params.multiple_bssid.parent =
+ nla_get_u32(info->attrs[NL80211_ATTR_MULTIPLE_BSSID_PARENT]);
+
+ if (info->attrs[NL80211_ATTR_MULTIPLE_BSSID_INDEX])
+ params.multiple_bssid.index = nla_get_u8(
+ info->attrs[NL80211_ATTR_MULTIPLE_BSSID_INDEX]);
+
+ if (info->attrs[NL80211_ATTR_MULTIPLE_BSSID_COUNT])
+ params.multiple_bssid.count = nla_get_u8(
+ info->attrs[NL80211_ATTR_MULTIPLE_BSSID_COUNT]);
+ params.multiple_bssid.ema =
+ nla_get_flag(info->attrs[NL80211_ATTR_MULTIPLE_BSSID_EMA]);
+
nl80211_calculate_ap_params(¶ms);
if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
--
2.25.1
