bnx2x: Set ethtool ops for vfs

Virtual functions don't have access to HW registers, therefore most ethtool ops
are forbidden to them. Instead of checking in each op whether the device being
driven is a virtual function or a physical function, this patch creates a
separate ethtool ops struct for virtual functions and uses it to initialize
the ethtool ops of the driver in case it is driving a virtual function device.

Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bnx2x/bnx2x.h

@@ -2285,7 +2285,7 @@ static const u32 dmae_reg_go_c[] = {
 	DMAE_REG_GO_C12, DMAE_REG_GO_C13, DMAE_REG_GO_C14, DMAE_REG_GO_C15
 };
 
-void bnx2x_set_ethtool_ops(struct net_device *netdev);
+void bnx2x_set_ethtool_ops(struct bnx2x *bp, struct net_device *netdev);
 void bnx2x_notify_link_changed(struct bnx2x *bp);
 
 #define BNX2X_MF_SD_PROTOCOL(bp) \

drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c

@@ -3232,7 +3232,32 @@ static const struct ethtool_ops bnx2x_ethtool_ops = {
 	.get_ts_info		= ethtool_op_get_ts_info,
 };
 
-void bnx2x_set_ethtool_ops(struct net_device *netdev)
+static const struct ethtool_ops bnx2x_vf_ethtool_ops = {
+	.get_settings		= bnx2x_get_settings,
+	.set_settings		= bnx2x_set_settings,
+	.get_drvinfo		= bnx2x_get_drvinfo,
+	.get_msglevel		= bnx2x_get_msglevel,
+	.set_msglevel		= bnx2x_set_msglevel,
+	.get_link		= bnx2x_get_link,
+	.get_coalesce		= bnx2x_get_coalesce,
+	.get_ringparam		= bnx2x_get_ringparam,
+	.set_ringparam		= bnx2x_set_ringparam,
+	.get_sset_count		= bnx2x_get_sset_count,
+	.get_strings		= bnx2x_get_strings,
+	.get_ethtool_stats	= bnx2x_get_ethtool_stats,
+	.get_rxnfc		= bnx2x_get_rxnfc,
+	.set_rxnfc		= bnx2x_set_rxnfc,
+	.get_rxfh_indir_size	= bnx2x_get_rxfh_indir_size,
+	.get_rxfh_indir		= bnx2x_get_rxfh_indir,
+	.set_rxfh_indir		= bnx2x_set_rxfh_indir,
+	.get_channels		= bnx2x_get_channels,
+	.set_channels		= bnx2x_set_channels,
+};
+
+void bnx2x_set_ethtool_ops(struct bnx2x *bp, struct net_device *netdev)
 {
-	SET_ETHTOOL_OPS(netdev, &bnx2x_ethtool_ops);
+	if (IS_PF(bp))
+		SET_ETHTOOL_OPS(netdev, &bnx2x_ethtool_ops);
+	else /* vf */
+		SET_ETHTOOL_OPS(netdev, &bnx2x_vf_ethtool_ops);
 }

drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c

@@ -11953,7 +11953,7 @@ static int bnx2x_init_dev(struct bnx2x *bp, struct pci_dev *pdev,
 	dev->watchdog_timeo = TX_TIMEOUT;
 
 	dev->netdev_ops = &bnx2x_netdev_ops;
-	bnx2x_set_ethtool_ops(dev);
+	bnx2x_set_ethtool_ops(bp, dev);
 
 	dev->priv_flags |= IFF_UNICAST_FLT;