wifi: nl80211: add EML/MLD capabilities to per-iftype capabilities

We have the per-interface type capabilities, currently for
extended capabilities, add the EML/MLD capabilities there
to have this advertised by the driver.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

include/net/cfg80211.h

@@ -4993,12 +4993,16 @@ struct wiphy_vendor_command {
  *	802.11-2012 8.4.2.29 for the defined fields.
  * @extended_capabilities_mask: mask of the valid values
  * @extended_capabilities_len: length of the extended capabilities
+ * @eml_capabilities: EML capabilities (for MLO)
+ * @mld_capa_and_ops: MLD capabilities and operations (for MLO)
  */
 struct wiphy_iftype_ext_capab {
 	enum nl80211_iftype iftype;
 	const u8 *extended_capabilities;
 	const u8 *extended_capabilities_mask;
 	u8 extended_capabilities_len;
+	u16 eml_capabilities;
+	u16 mld_capa_and_ops;
 };
 
 /**

include/uapi/linux/nl80211.h

@@ -2368,8 +2368,10 @@ enum nl80211_commands {
  *
  * @NL80211_ATTR_IFTYPE_EXT_CAPA: Nested attribute of the following attributes:
  *	%NL80211_ATTR_IFTYPE, %NL80211_ATTR_EXT_CAPA,
- *	%NL80211_ATTR_EXT_CAPA_MASK, to specify the extended capabilities per
- *	interface type.
+ *	%NL80211_ATTR_EXT_CAPA_MASK, to specify the extended capabilities and
+ *	other interface-type specific capabilities per interface type. For MLO,
+ *	%NL80211_ATTR_EML_CAPABILITY and %NL80211_ATTR_MLD_CAPA_AND_OPS are
+ *	present.
  *
  * @NL80211_ATTR_MU_MIMO_GROUP_DATA: array of 24 bytes that defines a MU-MIMO
  *	groupID for monitor mode.
@@ -2709,6 +2711,9 @@ enum nl80211_commands {
  *	suites allowed as %NL80211_MAX_NR_AKM_SUITES which is the legacy maximum
  *	number prior to the introduction of this attribute.
  *
+ * @NL80211_ATTR_EML_CAPABILITY: EML Capability information (u16)
+ * @NL80211_ATTR_MLD_CAPA_AND_OPS: MLD Capabilities and Operations (u16)
+ *
  * @NUM_NL80211_ATTR: total number of nl80211_attrs available
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
@@ -3231,6 +3236,9 @@ enum nl80211_attrs {
 
 	NL80211_ATTR_MAX_NUM_AKM_SUITES,
 
+	NL80211_ATTR_EML_CAPABILITY,
+	NL80211_ATTR_MLD_CAPA_AND_OPS,
+
 	/* add attributes here, update the policy in nl80211.c */
 
 	__NL80211_ATTR_AFTER_LAST,

net/wireless/nl80211.c

@@ -2867,6 +2867,15 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
 					    capab->extended_capabilities_mask))
 					goto nla_put_failure;
 
+				if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_MLO &&
+				    (nla_put_u16(msg,
+						 NL80211_ATTR_EML_CAPABILITY,
+						 capab->eml_capabilities) ||
+				     nla_put_u16(msg,
+						 NL80211_ATTR_MLD_CAPA_AND_OPS,
+						 capab->mld_capa_and_ops)))
+					goto nla_put_failure;
+
 				nla_nest_end(msg, nested_ext_capab);
 				if (state->split)
 					break;