diff options
| -rw-r--r-- | drivers/net/ethernet/mscc/ocelot.c | 9 | ||||
| -rw-r--r-- | drivers/net/ethernet/mscc/ocelot.h | 2 |
2 files changed, 11 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c index 8b73d760dfa5..42da193a8240 100644 --- a/drivers/net/ethernet/mscc/ocelot.c +++ b/drivers/net/ethernet/mscc/ocelot.c @@ -2230,9 +2230,18 @@ void ocelot_set_cpu_port(struct ocelot *ocelot, int cpu, * 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 */ diff --git a/drivers/net/ethernet/mscc/ocelot.h b/drivers/net/ethernet/mscc/ocelot.h index 9159b0adf1e7..bdc9b1d34b81 100644 --- 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 |