From 678569505623e50bbbbc344c7e820fb315b79ede Mon Sep 17 00:00:00 2001 From: Sven Eckelmann Date: Tue, 9 Jun 2020 15:35:04 +0200 Subject: [PATCH] ipq40xx: essedma: Disable TCP segmentation offload for IPv6 It was noticed that the the whole MAC can hang when transferring data from one ar40xx port (WAN ports) to the CPU and from the CPU back to another ar40xx port (LAN ports). The CPU was doing only NATing in that process. Usually, the problem first starts with a simple data corruption: $ wget https://cdimage.debian.org/debian-cd/current/amd64/iso-cd/debian-10.4.0-amd64-netinst.iso -O /dev/null ... Connecting to saimei.ftp.acc.umu.se (saimei.ftp.acc.umu.se)|2001:6b0:19::138|:443... connected. ... Read error at byte 48807936/352321536 (Decryption has failed.). Retrying. But after a short while, the whole MAC will stop to react. No traffic can be transported anymore from the CPU port from/to the AR40xx PHY/switch and the MAC has to be resetted. Signed-off-by: Sven Eckelmann Acked-by: John Crispin --- .../drivers/net/ethernet/qualcomm/essedma/edma_axi.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/target/linux/ipq40xx/files-5.4/drivers/net/ethernet/qualcomm/essedma/edma_axi.c b/target/linux/ipq40xx/files-5.4/drivers/net/ethernet/qualcomm/essedma/edma_axi.c index b619bbbab9..96a82b3116 100644 --- a/target/linux/ipq40xx/files-5.4/drivers/net/ethernet/qualcomm/essedma/edma_axi.c +++ b/target/linux/ipq40xx/files-5.4/drivers/net/ethernet/qualcomm/essedma/edma_axi.c @@ -970,17 +970,14 @@ static int edma_axi_probe(struct platform_device *pdev) edma_netdev[i]->features = NETIF_F_HW_CSUM | NETIF_F_RXCSUM | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_SG | - NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GRO; + NETIF_F_TSO | NETIF_F_GRO; edma_netdev[i]->hw_features = NETIF_F_HW_CSUM | NETIF_F_RXCSUM | NETIF_F_HW_VLAN_CTAG_RX - | NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 | - NETIF_F_GRO; + | NETIF_F_SG | NETIF_F_TSO | NETIF_F_GRO; edma_netdev[i]->vlan_features = NETIF_F_HW_CSUM | NETIF_F_SG | - NETIF_F_TSO | NETIF_F_TSO6 | - NETIF_F_GRO; + NETIF_F_TSO | NETIF_F_GRO; edma_netdev[i]->wanted_features = NETIF_F_HW_CSUM | NETIF_F_SG | - NETIF_F_TSO | NETIF_F_TSO6 | - NETIF_F_GRO; + NETIF_F_TSO | NETIF_F_GRO; #ifdef CONFIG_RFS_ACCEL edma_netdev[i]->features |= NETIF_F_RXHASH | NETIF_F_NTUPLE;