net: stmmac: Add check for HWTSTAMP_FILTER_ALL filter

-HWTSTAMP_FILTER_ALL with ipa enabled not supported.
-Add check for above condition to avoid crash.

Change-Id: I443122489aa257be5208bdf6260b2b3a9c8096c1
Acked-by: Ning Cai <ncai@qti.qualcomm.com>
Signed-off-by: Sunil Paidimarri <hisunil@codeaurora.org>

drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c

@@ -1768,6 +1768,14 @@ static int ethqos_set_early_eth_param(struct stmmac_priv *priv,
 	return ret;
 }
 
+bool qcom_ethqos_ipa_enabled(void)
+{
+#ifdef CONFIG_ETH_IPA_OFFLOAD
+	return pethqos->ipa_enabled;
+#endif
+	return false;
+}
+
 static int qcom_ethqos_probe(struct platform_device *pdev)
 {
 	struct device_node *np = pdev->dev.of_node;

drivers/net/ethernet/stmicro/stmmac/stmmac.h

@@ -194,5 +194,6 @@ int stmmac_dvr_probe(struct device *device,
 		     struct stmmac_resources *res);
 void stmmac_disable_eee_mode(struct stmmac_priv *priv);
 bool stmmac_eee_init(struct stmmac_priv *priv);
+bool qcom_ethqos_ipa_enabled(void);
 
 #endif /* __STMMAC_H__ */

drivers/net/ethernet/stmicro/stmmac/stmmac_main.c

@@ -539,6 +539,13 @@ static int stmmac_hwtstamp_ioctl(struct net_device *dev, struct ifreq *ifr)
 			   sizeof(struct hwtstamp_config)))
 		return -EFAULT;
 
+	if (qcom_ethqos_ipa_enabled() &&
+	    config.rx_filter == HWTSTAMP_FILTER_ALL) {
+		netdev_alert(priv->dev,
+			     "No hw timestamping since ipa is enabled\n");
+		return -EOPNOTSUPP;
+	}
+
 	netdev_dbg(priv->dev, "%s config flags:0x%x, tx_type:0x%x, rx_filter:0x%x\n",
 		   __func__, config.flags, config.tx_type, config.rx_filter);