From: Johannes Berg <johannes.berg@intel.com>
Date: Mon, 20 Sep 2021 15:40:08 +0200
Subject: [PATCH] mac80211: move CRC into struct ieee802_11_elems

commit c6e37ed498f958254b5459253199e816b6bfc52f upstream.

We're currently returning this value, but to prepare for
returning the allocated structure, move it into there.

Link: https://lore.kernel.org/r/20210920154009.479b8ebf999d.If0d4ba75ee38998dc3eeae25058aa748efcb2fc9@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---

--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1530,6 +1530,7 @@ struct ieee80211_csa_ie {
 struct ieee802_11_elems {
 	const u8 *ie_start;
 	size_t total_len;
+	u32 crc;
 
 	/* pointers to IEs */
 	const struct ieee80211_tdls_lnkie *lnk_id;
@@ -2089,10 +2090,10 @@ static inline void ieee80211_tx_skb(stru
 	ieee80211_tx_skb_tid(sdata, skb, 7);
 }
 
-u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
-			       struct ieee802_11_elems *elems,
-			       u64 filter, u32 crc, u8 *transmitter_bssid,
-			       u8 *bss_bssid);
+void ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
+				struct ieee802_11_elems *elems,
+				u64 filter, u32 crc, u8 *transmitter_bssid,
+				u8 *bss_bssid);
 static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
 					  bool action,
 					  struct ieee802_11_elems *elems,
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -4102,10 +4102,11 @@ static void ieee80211_rx_mgmt_beacon(str
 	 */
 	if (!ieee80211_is_s1g_beacon(hdr->frame_control))
 		ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
-	ncrc = ieee802_11_parse_elems_crc(variable,
-					  len - baselen, false, &elems,
-					  care_about_ies, ncrc,
-					  mgmt->bssid, bssid);
+	ieee802_11_parse_elems_crc(variable,
+				   len - baselen, false, &elems,
+				   care_about_ies, ncrc,
+				   mgmt->bssid, bssid);
+	ncrc = elems.crc;
 
 	if (ieee80211_hw_check(&local->hw, PS_NULLFUNC_STACK) &&
 	    ieee80211_check_tim(elems.tim, elems.tim_len, bss_conf->aid)) {
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1469,10 +1469,10 @@ static size_t ieee802_11_find_bssid_prof
 	return found ? profile_len : 0;
 }
 
-u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
-			       struct ieee802_11_elems *elems,
-			       u64 filter, u32 crc, u8 *transmitter_bssid,
-			       u8 *bss_bssid)
+void ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
+				struct ieee802_11_elems *elems,
+				u64 filter, u32 crc, u8 *transmitter_bssid,
+				u8 *bss_bssid)
 {
 	const struct element *non_inherit = NULL;
 	u8 *nontransmitted_profile;
@@ -1524,7 +1524,7 @@ u32 ieee802_11_parse_elems_crc(const u8
 
 	kfree(nontransmitted_profile);
 
-	return crc;
+	elems->crc = crc;
 }
 
 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata,