qcacmn: 160 MHz/80p80 support for gen III Spectral

For generation 3 spectral reports for the 80 MHz segments
come as part of different events. To deal with this a
state machine is added to report handler. Noise floor
value of the lowest chain in the chain mask is populated
in the SAMP message.

CRs-Fixed: 2236331
Change-Id: Ie24426449cf8503c9d7f7c30ca617a6697ca2b5e

os_if/linux/spectral/src/os_if_spectral_netlink.c

@@ -403,6 +403,7 @@ os_if_spectral_nl_unicast_msg(struct wlan_objmgr_pdev *pdev)
 }
 
 #endif
+
 /**
  * os_if_spectral_nl_bcast_msg() - Sends broadcast Spectral message to user
  * space
@@ -453,6 +454,44 @@ os_if_spectral_nl_bcast_msg(struct wlan_objmgr_pdev *pdev)
 	return status;
 }
 
+/**
+ * os_if_spectral_free_skb() - Free spectral SAMP message skb
+ *
+ * @pdev : Pointer to pdev
+ *
+ * Return: void
+ */
+static void
+os_if_spectral_free_skb(struct wlan_objmgr_pdev *pdev)
+{
+	struct pdev_spectral *ps = NULL;
+
+	if (!pdev) {
+		spectral_err("PDEV is NULL!");
+		return;
+	}
+	ps = wlan_objmgr_pdev_get_comp_private_obj(pdev,
+						   WLAN_UMAC_COMP_SPECTRAL);
+
+	if (!ps) {
+		spectral_err("PDEV SPECTRAL object is NULL!");
+		return;
+	}
+
+	if (!ps->skb) {
+		spectral_err("Socket buffer is null");
+		return;
+	}
+
+	/* Free buffer */
+	qdf_nbuf_free(ps->skb);
+
+	/* clear the local copy */
+	ps->skb = NULL;
+}
+
+qdf_export_symbol(os_if_spectral_free_skb);
+
 void
 os_if_spectral_netlink_init(struct wlan_objmgr_pdev *pdev)
 {
@@ -477,6 +516,7 @@ os_if_spectral_netlink_init(struct wlan_objmgr_pdev *pdev)
 	nl_cb.get_nbuff = os_if_spectral_prep_skb;
 	nl_cb.send_nl_bcast = os_if_spectral_nl_bcast_msg;
 	nl_cb.send_nl_unicast = os_if_spectral_nl_unicast_msg;
+	nl_cb.free_nbuff = os_if_spectral_free_skb;
 
 	if (sptrl_ctx->sptrlc_register_netlink_cb)
 		sptrl_ctx->sptrlc_register_netlink_cb(pdev, &nl_cb);