net: mvpp2: skip RSS configurations on loopback port

PPv2 loopback port doesn't support RSS, so we should
skip RSS configurations for this port.

Signed-off-by: Stefan Chulski <stefanc@marvell.com>
Reviewed-by: Marcin Wojtas <mw@semihalf.com>
Link: https://lore.kernel.org/r/1613652123-19021-1-git-send-email-stefanc@marvell.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
index 0507369..1767c60 100644 (file)
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
@@ -4699,9 +4699,10 @@ static void mvpp2_irqs_deinit(struct mvpp2_port *port)
        }
 }
 
-static bool mvpp22_rss_is_supported(void)
+static bool mvpp22_rss_is_supported(struct mvpp2_port *port)
 {
-       return queue_mode == MVPP2_QDIST_MULTI_MODE;
+       return (queue_mode == MVPP2_QDIST_MULTI_MODE) &&
+               !(port->flags & MVPP2_F_LOOPBACK);
 }
 
 static int mvpp2_open(struct net_device *dev)
@@ -5513,7 +5514,7 @@ static int mvpp2_ethtool_get_rxnfc(struct net_device *dev,
        struct mvpp2_port *port = netdev_priv(dev);
        int ret = 0, i, loc = 0;
 
-       if (!mvpp22_rss_is_supported())
+       if (!mvpp22_rss_is_supported(port))
                return -EOPNOTSUPP;
 
        switch (info->cmd) {
@@ -5548,7 +5549,7 @@ static int mvpp2_ethtool_set_rxnfc(struct net_device *dev,
        struct mvpp2_port *port = netdev_priv(dev);
        int ret = 0;
 
-       if (!mvpp22_rss_is_supported())
+       if (!mvpp22_rss_is_supported(port))
                return -EOPNOTSUPP;
 
        switch (info->cmd) {
@@ -5569,7 +5570,9 @@ static int mvpp2_ethtool_set_rxnfc(struct net_device *dev,
 
 static u32 mvpp2_ethtool_get_rxfh_indir_size(struct net_device *dev)
 {
-       return mvpp22_rss_is_supported() ? MVPP22_RSS_TABLE_ENTRIES : 0;
+       struct mvpp2_port *port = netdev_priv(dev);
+
+       return mvpp22_rss_is_supported(port) ? MVPP22_RSS_TABLE_ENTRIES : 0;
 }
 
 static int mvpp2_ethtool_get_rxfh(struct net_device *dev, u32 *indir, u8 *key,
@@ -5578,7 +5581,7 @@ static int mvpp2_ethtool_get_rxfh(struct net_device *dev, u32 *indir, u8 *key,
        struct mvpp2_port *port = netdev_priv(dev);
        int ret = 0;
 
-       if (!mvpp22_rss_is_supported())
+       if (!mvpp22_rss_is_supported(port))
                return -EOPNOTSUPP;
 
        if (indir)
@@ -5596,7 +5599,7 @@ static int mvpp2_ethtool_set_rxfh(struct net_device *dev, const u32 *indir,
        struct mvpp2_port *port = netdev_priv(dev);
        int ret = 0;
 
-       if (!mvpp22_rss_is_supported())
+       if (!mvpp22_rss_is_supported(port))
                return -EOPNOTSUPP;
 
        if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_CRC32)
@@ -5617,7 +5620,7 @@ static int mvpp2_ethtool_get_rxfh_context(struct net_device *dev, u32 *indir,
        struct mvpp2_port *port = netdev_priv(dev);
        int ret = 0;
 
-       if (!mvpp22_rss_is_supported())
+       if (!mvpp22_rss_is_supported(port))
                return -EOPNOTSUPP;
        if (rss_context >= MVPP22_N_RSS_TABLES)
                return -EINVAL;
@@ -5639,7 +5642,7 @@ static int mvpp2_ethtool_set_rxfh_context(struct net_device *dev,
        struct mvpp2_port *port = netdev_priv(dev);
        int ret;
 
-       if (!mvpp22_rss_is_supported())
+       if (!mvpp22_rss_is_supported(port))
                return -EOPNOTSUPP;
 
        if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_CRC32)
@@ -5956,7 +5959,7 @@ static int mvpp2_port_init(struct mvpp2_port *port)
        mvpp2_cls_oversize_rxq_set(port);
        mvpp2_cls_port_config(port);
 
-       if (mvpp22_rss_is_supported())
+       if (mvpp22_rss_is_supported(port))
                mvpp22_port_rss_init(port);
 
        /* Provide an initial Rx packet size */
@@ -6861,7 +6864,7 @@ static int mvpp2_port_probe(struct platform_device *pdev,
        dev->hw_features |= features | NETIF_F_RXCSUM | NETIF_F_GRO |
                            NETIF_F_HW_VLAN_CTAG_FILTER;
 
-       if (mvpp22_rss_is_supported()) {
+       if (mvpp22_rss_is_supported(port)) {
                dev->hw_features |= NETIF_F_RXHASH;
                dev->features |= NETIF_F_NTUPLE;
        }