diff mbox series

[net-next] net: ethernet: ti: am65-cpsw: enable p0 host port rx_vlan_remap

Message ID 20230327092103.3256118-1-s-vadapalli@ti.com (mailing list archive)
State New, archived
Headers show
Series [net-next] net: ethernet: ti: am65-cpsw: enable p0 host port rx_vlan_remap | expand

Commit Message

Siddharth Vadapalli March 27, 2023, 9:21 a.m. UTC 
From: Grygorii Strashko <grygorii.strashko@ti.com>

By default, the tagged ingress packets to the switch from the host port
P0 get internal switch priority assigned equal to the DMA CPPI channel
number they came from, unless CPSW_P0_CONTROL_REG.RX_REMAP_VLAN is enabled.
This causes issues with applying QoS policies and mapping packets on
external port fifos, because the default configuration is vlan_aware and
DMA CPPI channels are shared between all external ports.

Hence enable CPSW_P0_CONTROL_REG.RX_REMAP_VLAN so packet will preserve
internal switch priority assigned following the VLAN(priority) tag no
matter through which DMA CPPI Channels packets enter the switch.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
---
 drivers/net/ethernet/ti/am65-cpsw-nuss.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

Comments

patchwork-bot+netdevbpf@kernel.org March 28, 2023, 1:40 p.m. UTC | #1 
Hello:

This patch was applied to netdev/net-next.git (main)
by Paolo Abeni <pabeni@redhat.com>:

On Mon, 27 Mar 2023 14:51:03 +0530 you wrote:
> From: Grygorii Strashko <grygorii.strashko@ti.com>
> 
> By default, the tagged ingress packets to the switch from the host port
> P0 get internal switch priority assigned equal to the DMA CPPI channel
> number they came from, unless CPSW_P0_CONTROL_REG.RX_REMAP_VLAN is enabled.
> This causes issues with applying QoS policies and mapping packets on
> external port fifos, because the default configuration is vlan_aware and
> DMA CPPI channels are shared between all external ports.
> 
> [...]

Here is the summary with links:
  - [net-next] net: ethernet: ti: am65-cpsw: enable p0 host port rx_vlan_remap
    https://git.kernel.org/netdev/net-next/c/86e2eca4dded

You are awesome, thank you!
diff mbox series

Patch

diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
index 9ddb79776c88..907aab7dc89a 100644
--- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c
+++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
@@ -86,6 +86,7 @@ 
 
 /* AM65_CPSW_P0_REG_CTL */
 #define AM65_CPSW_P0_REG_CTL_RX_CHECKSUM_EN	BIT(0)
+#define AM65_CPSW_P0_REG_CTL_RX_REMAP_VLAN	BIT(16)
 
 /* AM65_CPSW_PORT_REG_PRI_CTL */
 #define AM65_CPSW_PORT_REG_PRI_CTL_RX_PTYPE_RROBIN	BIT(8)
@@ -385,8 +386,8 @@  static int am65_cpsw_nuss_common_open(struct am65_cpsw_common *common)
 	/* set base flow_id */
 	writel(common->rx_flow_id_base,
 	       host_p->port_base + AM65_CPSW_PORT0_REG_FLOW_ID_OFFSET);
-	/* en tx crc offload */
-	writel(AM65_CPSW_P0_REG_CTL_RX_CHECKSUM_EN, host_p->port_base + AM65_CPSW_P0_REG_CTL);
+	writel(AM65_CPSW_P0_REG_CTL_RX_CHECKSUM_EN | AM65_CPSW_P0_REG_CTL_RX_REMAP_VLAN,
+	       host_p->port_base + AM65_CPSW_P0_REG_CTL);
 
 	am65_cpsw_nuss_set_p0_ptype(common);