From: Rameshkumar Sundaram <quic_ramess@xxxxxxxxxxx>
Currently non-transmitted profile provides the interface index of the
transmitted profile. The index matches one of the interface indices
advertised by the kernel.
For MLO MBSSID, if the transmitted profile if part of an MLD, then the
transmitted profile is a specific link of that MLD. Utilizing only Tx
index is no longer sufficient to identify transmitted profile for MLO.
Add a new attribute to specify link id of the transmitted profile of
MBSSID group if the profile is part of an MLD. It is required to map
the nontransmitted link with corresponding transmitted link.
Signed-off-by: Rameshkumar Sundaram <quic_ramess@xxxxxxxxxxx>
Co-developed-by: Aloka Dixit <quic_alokad@xxxxxxxxxxx>
Signed-off-by: Aloka Dixit <quic_alokad@xxxxxxxxxxx>
Signed-off-by: Muna Sinada <quic_msinada@xxxxxxxxxxx>
---
include/net/cfg80211.h | 2 ++
include/uapi/linux/nl80211.h | 5 +++++
net/wireless/nl80211.c | 29 ++++++++++++++++++++++++++---
3 files changed, 33 insertions(+), 3 deletions(-)
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 192d72c8b465..ccdfcb33ba1e 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1286,11 +1286,13 @@ struct cfg80211_crypto_settings {
* struct cfg80211_mbssid_config - AP settings for multi bssid
*
* @tx_wdev: pointer to the transmitted interface in the MBSSID set
+ * @tx_link_id: link ID of the transmitted interface if it is part of an MLD.
* @index: index of this AP in the multi bssid group.
* @ema: set to true if the beacons should be sent out in EMA mode.
*/
struct cfg80211_mbssid_config {
struct wireless_dev *tx_wdev;
+ int tx_link_id;
u8 index;
bool ema;
};
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index f97f5adc8d51..6bd46b4998c9 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -7987,6 +7987,10 @@ enum nl80211_sar_specs_attrs {
* Setting this flag is permitted only if the driver advertises EMA support
* by setting wiphy->ema_max_profile_periodicity to non-zero.
*
+ * @NL80211_MBSSID_CONFIG_ATTR_TX_LINK_ID: Mandatory parameter for a non-transmitted
+ * profile which provides the link ID (u8) of the transmitted profile when the latter
+ * is part of an MLD.
+ *
* @__NL80211_MBSSID_CONFIG_ATTR_LAST: Internal
* @NL80211_MBSSID_CONFIG_ATTR_MAX: highest attribute
*/
@@ -7998,6 +8002,7 @@ enum nl80211_mbssid_config_attributes {
NL80211_MBSSID_CONFIG_ATTR_INDEX,
NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX,
NL80211_MBSSID_CONFIG_ATTR_EMA,
+ NL80211_MBSSID_CONFIG_ATTR_TX_LINK_ID,
/* keep last */
__NL80211_MBSSID_CONFIG_ATTR_LAST,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 7397a372c78e..bd168f3d5950 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -454,6 +454,8 @@ nl80211_mbssid_config_policy[NL80211_MBSSID_CONFIG_ATTR_MAX + 1] = {
[NL80211_MBSSID_CONFIG_ATTR_INDEX] = { .type = NLA_U8 },
[NL80211_MBSSID_CONFIG_ATTR_TX_IFINDEX] = { .type = NLA_U32 },
[NL80211_MBSSID_CONFIG_ATTR_EMA] = { .type = NLA_FLAG },
+ [NL80211_MBSSID_CONFIG_ATTR_TX_LINK_ID] =
+ NLA_POLICY_MAX(NLA_U8, IEEE80211_MLD_MAX_NUM_LINKS),
};
static const struct nla_policy
@@ -5477,6 +5479,8 @@ static int nl80211_parse_mbssid_config(struct wiphy *wiphy,
u8 num_elems)
{
struct nlattr *tb[NL80211_MBSSID_CONFIG_ATTR_MAX + 1];
+ struct net_device *tx_netdev = NULL;
+ int err = -EINVAL;
if (!wiphy->mbssid_max_interfaces)
return -EOPNOTSUPP;
@@ -5509,9 +5513,7 @@ static int nl80211_parse_mbssid_config(struct wiphy *wiphy,
return -EINVAL;
if (tx_ifindex != dev->ifindex) {
- struct net_device *tx_netdev =
- dev_get_by_index(wiphy_net(wiphy), tx_ifindex);
-
+ tx_netdev = dev_get_by_index(wiphy_net(wiphy), tx_ifindex);
if (!tx_netdev || !tx_netdev->ieee80211_ptr ||
tx_netdev->ieee80211_ptr->wiphy != wiphy ||
tx_netdev->ieee80211_ptr->iftype !=
@@ -5530,7 +5532,28 @@ static int nl80211_parse_mbssid_config(struct wiphy *wiphy,
return -EINVAL;
}
+ config->tx_link_id = 0;
+ if (config->tx_wdev->valid_links) {
+ if (!tb[NL80211_MBSSID_CONFIG_ATTR_TX_LINK_ID])
+ goto err;
+
+ config->tx_link_id = nla_get_u8(tb[NL80211_MBSSID_CONFIG_ATTR_TX_LINK_ID]);
+ if (!(config->tx_wdev->valid_links & BIT(config->tx_link_id))) {
+ err = -ENOLINK;
+ goto err;
+ }
+ } else if (tb[NL80211_MBSSID_CONFIG_ATTR_TX_LINK_ID]) {
+ goto err;
+ }
+
return 0;
+
+err:
+ if (tx_netdev) {
+ config->tx_wdev = NULL;
+ dev_put(tx_netdev);
+ }
+ return err;
}
static struct cfg80211_mbssid_elems *
--
2.34.1
