wifi: ath12k: refactor arvif security parameter configuration

Configure security parameters in a separate function to make it
easier to support setting the same for nontransmitted profiles.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com>
Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://msgid.link/20240508202912.11902-7-quic_alokad@quicinc.com

drivers/net/wireless/ath/ath12k/mac.c

@@ -1299,6 +1299,26 @@ static int ath12k_mac_remove_vendor_ie(struct sk_buff *skb, unsigned int oui,
 	return 0;
 }
 
+static void ath12k_mac_set_arvif_ies(struct ath12k_vif *arvif, struct sk_buff *bcn)
+{
+	struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)bcn->data;
+	const u8 *start, *tail;
+	u16 rem_len;
+
+	start = bcn->data + ieee80211_get_hdrlen_from_skb(bcn) + sizeof(mgmt->u.beacon);
+	tail = skb_tail_pointer(bcn);
+	rem_len = tail - start;
+
+	arvif->rsnie_present = false;
+	arvif->wpaie_present = false;
+
+	if (cfg80211_find_ie(WLAN_EID_RSN, start, rem_len))
+		arvif->rsnie_present = true;
+	if (cfg80211_find_vendor_ie(WLAN_OUI_MICROSOFT, WLAN_OUI_TYPE_MICROSOFT_WPA,
+				    start, rem_len))
+		arvif->wpaie_present = true;
+}
+
 static int ath12k_mac_setup_bcn_tmpl(struct ath12k_vif *arvif)
 {
 	struct ath12k *ar = arvif->ar;
@@ -1307,8 +1327,6 @@ static int ath12k_mac_setup_bcn_tmpl(struct ath12k_vif *arvif)
 	struct ieee80211_vif *vif = arvif->vif;
 	struct ieee80211_mutable_offsets offs = {};
 	struct sk_buff *bcn;
-	struct ieee80211_mgmt *mgmt;
-	u8 *ies;
 	int ret;
 
 	if (arvif->vdev_type != WMI_VDEV_TYPE_AP)
@@ -1320,16 +1338,7 @@ static int ath12k_mac_setup_bcn_tmpl(struct ath12k_vif *arvif)
 		return -EPERM;
 	}
 
-	ies = bcn->data + ieee80211_get_hdrlen_from_skb(bcn);
-	ies += sizeof(mgmt->u.beacon);
-
-	if (cfg80211_find_ie(WLAN_EID_RSN, ies, (skb_tail_pointer(bcn) - ies)))
-		arvif->rsnie_present = true;
-
-	if (cfg80211_find_vendor_ie(WLAN_OUI_MICROSOFT,
-				    WLAN_OUI_TYPE_MICROSOFT_WPA,
-				    ies, (skb_tail_pointer(bcn) - ies)))
-		arvif->wpaie_present = true;
+	ath12k_mac_set_arvif_ies(arvif, bcn);
 
 	if (arvif->vif->type == NL80211_IFTYPE_AP && arvif->vif->p2p) {
 		ret = ath12k_mac_setup_bcn_p2p_ie(arvif, bcn);