mac80211: backport SAR power limit support

Needed for an upcoming mt76 update

Signed-off-by: Felix Fietkau <nbd@nbd.name>

1 files changed, 51 insertions, 0 deletions

diff --git a/package/kernel/mac80211/patches/subsys/385-mac80211-add-ieee80211_set_sar_specs.patch b/package/kernel/mac80211/patches/subsys/385-mac80211-add-ieee80211_set_sar_specs.patch
new file mode 100644
index 0000000000..c351bc812a
--- /dev/null
+++ b/package/kernel/mac80211/patches/subsys/385-mac80211-add-ieee80211_set_sar_specs.patch
@@ -0,0 +1,51 @@
+From: Carl Huang <cjhuang@codeaurora.org>
+Date: Thu, 3 Dec 2020 05:37:27 -0500
+Subject: [PATCH] mac80211: add ieee80211_set_sar_specs
+
+This change registers ieee80211_set_sar_specs to
+mac80211_config_ops, so cfg80211 can call it.
+
+Signed-off-by: Carl Huang <cjhuang@codeaurora.org>
+Reviewed-by: Brian Norris <briannorris@chromium.org>
+Reviewed-by: Abhishek Kumar <kuabhs@chromium.org>
+Link: https://lore.kernel.org/r/20201203103728.3034-3-cjhuang@codeaurora.org
+Signed-off-by: Johannes Berg <johannes.berg@intel.com>
+---
+
+--- a/include/net/mac80211.h
++++ b/include/net/mac80211.h
+@@ -4207,6 +4207,8 @@ struct ieee80211_ops {
+ 				   struct ieee80211_vif *vif);
+ 	void (*sta_set_4addr)(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ 			      struct ieee80211_sta *sta, bool enabled);
++	int (*set_sar_specs)(struct ieee80211_hw *hw,
++			     const struct cfg80211_sar_specs *sar);
+ 	void (*sta_set_decap_offload)(struct ieee80211_hw *hw,
+ 				      struct ieee80211_vif *vif,
+ 				      struct ieee80211_sta *sta, bool enabled);
+--- a/net/mac80211/cfg.c
++++ b/net/mac80211/cfg.c
+@@ -4136,6 +4136,17 @@ static int ieee80211_reset_tid_config(st
+ 	return ret;
+ }
+ 
++static int ieee80211_set_sar_specs(struct wiphy *wiphy,
++				   struct cfg80211_sar_specs *sar)
++{
++	struct ieee80211_local *local = wiphy_priv(wiphy);
++
++	if (!local->ops->set_sar_specs)
++		return -EOPNOTSUPP;
++
++	return local->ops->set_sar_specs(&local->hw, sar);
++}
++
+ const struct cfg80211_ops mac80211_config_ops = {
+ 	.add_virtual_intf = ieee80211_add_iface,
+ 	.del_virtual_intf = ieee80211_del_iface,
+@@ -4239,4 +4250,5 @@ const struct cfg80211_ops mac80211_confi
+ 	.probe_mesh_link = ieee80211_probe_mesh_link,
+ 	.set_tid_config = ieee80211_set_tid_config,
+ 	.reset_tid_config = ieee80211_reset_tid_config,
++	.set_sar_specs = ieee80211_set_sar_specs,
+ };