net: stmmac: tc: Do not setup flower filtering if RSS is enabled

RSS, when enabled, will bypass the L3 and L4 filtering causing it not
to work. Add a check before trying to setup the filters.

Fixes: 8aaef7e4c5cc ("net: stmmac: Implement L3/L4 Filters using TC Flower")
Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
index 7d972e0fd2b04d8759a016b023e07b30381e3dd3..9ffae12a212273c8c3d85844ff0a1e0dc6efcfd3 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
@@ -577,6 +577,10 @@ static int tc_setup_cls(struct stmmac_priv *priv,
 {
        int ret = 0;
 
+       /* When RSS is enabled, the filtering will be bypassed */
+       if (priv->rss.enable)
+               return -EBUSY;
+
        switch (cls->command) {
        case FLOW_CLS_REPLACE:
                ret = tc_add_flow(priv, cls);