diff options
| -rw-r--r-- | drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_common.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_common.c b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_common.c index fbe61da..19a8a3c 100644 --- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_common.c +++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_common.c @@ -263,7 +263,16 @@ EXPORT_SYMBOL(dpa_get_stats64); int dpa_change_mtu(struct net_device *net_dev, int new_mtu) { - const int max_mtu = dpa_get_max_mtu(); + int max_mtu = dpa_get_max_mtu(); + +#ifndef CONFIG_PPC + /* Due to the A010022 FMan errata, we can not use contig frames larger + * than 4K, nor S/G frames. We need to prevent the user from setting a + * large MTU. + */ + if (unlikely(dpaa_errata_a010022)) + max_mtu = DPA_BP_RAW_SIZE; +#endif /* Make sure we don't exceed the Ethernet controller's MAXFRM */ if (new_mtu < 68 || new_mtu > max_mtu) { |