mac80211: backport ieee80211_set_sband_iftype_data()

It's needed by some drivers, e.g. mt7925, see:
mt7925/main.c:264:9: error: implicit declaration of function '_ieee80211_set_sband_iftype_data' [-Werror=implicit-function-declaration]

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

diff --git a/package/kernel/mac80211/patches/subsys/781-wifi-cfg80211-add-ieee80211_set_sband_iftype_data-he.patch b/package/kernel/mac80211/patches/subsys/781-wifi-cfg80211-add-ieee80211_set_sband_iftype_data-he.patch
new file mode 100644 (file)
index 0000000..c2bfdeb
--- /dev/null
+++ b/package/kernel/mac80211/patches/subsys/781-wifi-cfg80211-add-ieee80211_set_sband_iftype_data-he.patch
@@ -0,0 +1,49 @@
+From: Johannes Berg <johannes.berg@intel.com>
+Date: Mon, 28 Aug 2023 09:54:39 +0200
+Subject: [PATCH] wifi: cfg80211: add ieee80211_set_sband_iftype_data() helper
+ macro
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Signed-off-by: Johannes Berg <johannes.berg@intel.com>
+[rmilecki: extract from the e8c1841278a7]
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+---
+
+--- a/include/net/cfg80211.h
++++ b/include/net/cfg80211.h
+@@ -555,6 +555,33 @@ struct ieee80211_supported_band {
+ };
+ 
+ /**
++ * _ieee80211_set_sband_iftype_data - set sband iftype data array
++ * @sband: the sband to initialize
++ * @iftd: the iftype data array pointer
++ * @n_iftd: the length of the iftype data array
++ *
++ * Set the sband iftype data array; use this where the length cannot
++ * be derived from the ARRAY_SIZE() of the argument, but prefer
++ * ieee80211_set_sband_iftype_data() where it can be used.
++ */
++static inline void
++_ieee80211_set_sband_iftype_data(struct ieee80211_supported_band *sband,
++                               const struct ieee80211_sband_iftype_data *iftd,
++                               u16 n_iftd)
++{
++      sband->iftype_data = iftd;
++      sband->n_iftype_data = n_iftd;
++}
++
++/**
++ * ieee80211_set_sband_iftype_data - set sband iftype data array
++ * @sband: the sband to initialize
++ * @iftd: the iftype data array
++ */
++#define ieee80211_set_sband_iftype_data(sband, iftd)  \
++      _ieee80211_set_sband_iftype_data(sband, iftd, ARRAY_SIZE(iftd))
++
++/**
+  * ieee80211_get_sband_iftype_data - return sband data for a given iftype
+  * @sband: the sband to search for the STA on
+  * @iftype: enum nl80211_iftype