diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/701-net-0032-sdk_dpaa-ls1043a-errata-restrict-the-max-mtu.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/701-net-0032-sdk_dpaa-ls1043a-errata-restrict-the-max-mtu.patch | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/701-net-0032-sdk_dpaa-ls1043a-errata-restrict-the-max-mtu.patch b/target/linux/layerscape/patches-5.4/701-net-0032-sdk_dpaa-ls1043a-errata-restrict-the-max-mtu.patch new file mode 100644 index 0000000000..7b70452a08 --- /dev/null +++ b/target/linux/layerscape/patches-5.4/701-net-0032-sdk_dpaa-ls1043a-errata-restrict-the-max-mtu.patch @@ -0,0 +1,33 @@ +From b204d76e9a64ec99f0151b7ca018f3b6df2bb1b7 Mon Sep 17 00:00:00 2001 +From: Camelia Groza <camelia.groza@nxp.com> +Date: Tue, 19 Sep 2017 11:30:50 +0300 +Subject: [PATCH] sdk_dpaa: ls1043a errata: restrict the max mtu + +We can not allow for Jumbo frames and large MTU values on LS1043A due to +the A-010022 FMan errata. All outgoing frames larger than 4K bytes are dropped. + +Signed-off-by: Camelia Groza <camelia.groza@nxp.com> +--- + drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_common.c | 11 ++++++++++- + 1 file changed, 10 insertions(+), 1 deletion(-) + +--- 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) { |