diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/701-net-0258-net-mscc-ocelot-adjust-MTU-on-the-CPU-port-in-NPI-mo.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/701-net-0258-net-mscc-ocelot-adjust-MTU-on-the-CPU-port-in-NPI-mo.patch | 54 |
1 files changed, 0 insertions, 54 deletions
diff --git a/target/linux/layerscape/patches-5.4/701-net-0258-net-mscc-ocelot-adjust-MTU-on-the-CPU-port-in-NPI-mo.patch b/target/linux/layerscape/patches-5.4/701-net-0258-net-mscc-ocelot-adjust-MTU-on-the-CPU-port-in-NPI-mo.patch deleted file mode 100644 index 667be87db0..0000000000 --- a/target/linux/layerscape/patches-5.4/701-net-0258-net-mscc-ocelot-adjust-MTU-on-the-CPU-port-in-NPI-mo.patch +++ /dev/null @@ -1,54 +0,0 @@ -From b2f7c18c351737c2a053c39c09ef50870fd78c06 Mon Sep 17 00:00:00 2001 -From: Vladimir Oltean <vladimir.oltean@nxp.com> -Date: Thu, 14 Nov 2019 17:03:25 +0200 -Subject: [PATCH] net: mscc: ocelot: adjust MTU on the CPU port in NPI mode - -When using the NPI port, the DSA tag is passed through Ethernet, so the -switch's MAC needs to accept it as it comes from the DSA master. Increase -the MTU on the external CPU port to account for the length of the -injection header. - -Without this patch, MTU-sized frames are dropped by the switch's CPU -port on xmit, which is especially obvious in TCP sessions. - -Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> -Reviewed-by: Andrew Lunn <andrew@lunn.ch> -Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> -Signed-off-by: David S. Miller <davem@davemloft.net> ---- - drivers/net/ethernet/mscc/ocelot.c | 9 +++++++++ - drivers/net/ethernet/mscc/ocelot.h | 2 ++ - 2 files changed, 11 insertions(+) - ---- a/drivers/net/ethernet/mscc/ocelot.c -+++ b/drivers/net/ethernet/mscc/ocelot.c -@@ -2229,9 +2229,18 @@ void ocelot_set_cpu_port(struct ocelot * - * Only one port can be an NPI at the same time. - */ - if (cpu < ocelot->num_phys_ports) { -+ int mtu = VLAN_ETH_FRAME_LEN + OCELOT_TAG_LEN; -+ - ocelot_write(ocelot, QSYS_EXT_CPU_CFG_EXT_CPUQ_MSK_M | - QSYS_EXT_CPU_CFG_EXT_CPU_PORT(cpu), - QSYS_EXT_CPU_CFG); -+ -+ if (injection == OCELOT_TAG_PREFIX_SHORT) -+ mtu += OCELOT_SHORT_PREFIX_LEN; -+ else if (injection == OCELOT_TAG_PREFIX_LONG) -+ mtu += OCELOT_LONG_PREFIX_LEN; -+ -+ ocelot_port_set_mtu(ocelot, cpu, mtu); - } - - /* CPU port Injection/Extraction configuration */ ---- a/drivers/net/ethernet/mscc/ocelot.h -+++ b/drivers/net/ethernet/mscc/ocelot.h -@@ -65,6 +65,8 @@ struct frame_info { - #define IFH_REW_OP_ORIGIN_PTP 0x5 - - #define OCELOT_TAG_LEN 16 -+#define OCELOT_SHORT_PREFIX_LEN 4 -+#define OCELOT_LONG_PREFIX_LEN 16 - - #define OCELOT_SPEED_2500 0 - #define OCELOT_SPEED_1000 1 |