From 4ccad922293a729369712026f647f85266322851 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Thu, 21 Dec 2017 12:13:30 +0100 Subject: mvebu: Add support for kernel 4.14 Add support for kernel 4.14 to the mvebu target. This also replaces the old sfp and phylink patches with new versions from Russell's clearfog-4.13 branch http://git.arm.linux.org.uk/cgit/linux-arm.git/log/?h=clearfog-4.13 Signed-off-by: Hauke Mehrtens --- .../300-mvneta-tx-queue-workaround.patch | 35 ++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 target/linux/mvebu/patches-4.14/300-mvneta-tx-queue-workaround.patch (limited to 'target/linux/mvebu/patches-4.14/300-mvneta-tx-queue-workaround.patch') diff --git a/target/linux/mvebu/patches-4.14/300-mvneta-tx-queue-workaround.patch b/target/linux/mvebu/patches-4.14/300-mvneta-tx-queue-workaround.patch new file mode 100644 index 0000000000..f21f8083ee --- /dev/null +++ b/target/linux/mvebu/patches-4.14/300-mvneta-tx-queue-workaround.patch @@ -0,0 +1,35 @@ +The hardware queue scheduling is apparently configured with fixed +priorities, which creates a nasty fairness issue where traffic from one +CPU can starve traffic from all other CPUs. + +Work around this issue by forcing all tx packets to go through one CPU, +until this issue is fixed properly. + +Signed-off-by: Felix Fietkau +--- +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -3961,6 +3961,15 @@ static int mvneta_ethtool_set_wol(struct + return ret; + } + ++static u16 mvneta_select_queue(struct net_device *dev, struct sk_buff *skb, ++ void *accel_priv, ++ select_queue_fallback_t fallback) ++{ ++ /* XXX: hardware queue scheduling is broken, ++ * use only one queue until it is fixed */ ++ return 0; ++} ++ + static const struct net_device_ops mvneta_netdev_ops = { + .ndo_open = mvneta_open, + .ndo_stop = mvneta_stop, +@@ -3971,6 +3980,7 @@ static const struct net_device_ops mvnet + .ndo_fix_features = mvneta_fix_features, + .ndo_get_stats64 = mvneta_get_stats64, + .ndo_do_ioctl = mvneta_ioctl, ++ .ndo_select_queue = mvneta_select_queue, + }; + + static const struct ethtool_ops mvneta_eth_tool_ops = { -- cgit v1.2.3