From e715d74504352968cf24ac95476706bc911a69cd Mon Sep 17 00:00:00 2001 From: Jose Abreu Date: Fri, 10 Jan 2020 16:23:52 +0100 Subject: [PATCH 1/2] net: stmmac: selftests: Update status when disabling RSS We are disabling RSS on HW but not updating the internal private status to the 'disabled' state. This is needed for next tc commit that will check if RSS is disabled before trying to apply filters. Fixes: 4647e021193d ("net: stmmac: selftests: Add selftest for L3/L4 Filters") Signed-off-by: Jose Abreu Signed-off-by: David S. Miller --- .../stmicro/stmmac/stmmac_selftests.c | 20 +++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c index 13227909287c..36a4c43a799a 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c @@ -1323,16 +1323,19 @@ static int __stmmac_test_l3filt(struct stmmac_priv *priv, u32 dst, u32 src, struct stmmac_packet_attrs attr = { }; struct flow_dissector *dissector; struct flow_cls_offload *cls; + int ret, old_enable = 0; struct flow_rule *rule; - int ret; if (!tc_can_offload(priv->dev)) return -EOPNOTSUPP; if (!priv->dma_cap.l3l4fnum) return -EOPNOTSUPP; - if (priv->rss.enable) + if (priv->rss.enable) { + old_enable = priv->rss.enable; + priv->rss.enable = false; stmmac_rss_configure(priv, priv->hw, NULL, priv->plat->rx_queues_to_use); + } dissector = kzalloc(sizeof(*dissector), GFP_KERNEL); if (!dissector) { @@ -1399,7 +1402,8 @@ cleanup_cls: cleanup_dissector: kfree(dissector); cleanup_rss: - if (priv->rss.enable) { + if (old_enable) { + priv->rss.enable = old_enable; stmmac_rss_configure(priv, priv->hw, &priv->rss, priv->plat->rx_queues_to_use); } @@ -1444,16 +1448,19 @@ static int __stmmac_test_l4filt(struct stmmac_priv *priv, u32 dst, u32 src, struct stmmac_packet_attrs attr = { }; struct flow_dissector *dissector; struct flow_cls_offload *cls; + int ret, old_enable = 0; struct flow_rule *rule; - int ret; if (!tc_can_offload(priv->dev)) return -EOPNOTSUPP; if (!priv->dma_cap.l3l4fnum) return -EOPNOTSUPP; - if (priv->rss.enable) + if (priv->rss.enable) { + old_enable = priv->rss.enable; + priv->rss.enable = false; stmmac_rss_configure(priv, priv->hw, NULL, priv->plat->rx_queues_to_use); + } dissector = kzalloc(sizeof(*dissector), GFP_KERNEL); if (!dissector) { @@ -1525,7 +1532,8 @@ cleanup_cls: cleanup_dissector: kfree(dissector); cleanup_rss: - if (priv->rss.enable) { + if (old_enable) { + priv->rss.enable = old_enable; stmmac_rss_configure(priv, priv->hw, &priv->rss, priv->plat->rx_queues_to_use); } From 7bd754c47dd3ad1b048c9641294b0234fcce2c58 Mon Sep 17 00:00:00 2001 From: Jose Abreu Date: Fri, 10 Jan 2020 16:23:53 +0100 Subject: [PATCH 2/2] 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: 425eabddaf0f ("net: stmmac: Implement L3/L4 Filters using TC Flower") Signed-off-by: Jose Abreu Signed-off-by: David S. Miller --- drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c index 7d972e0fd2b0..9ffae12a2122 100644 --- 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);