From 462a088c474832b19ff2730de1e6bea66d399c23 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Karel=20Ko=C4=8D=C3=AD?= Date: Sat, 15 Oct 2022 23:01:29 +0200 Subject: Add Turris kernel (includes patches from OpenWrt) --- .../700-mvneta-tx-queue-workaround.patch | 38 ++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 pkgs/patches-linux-5.15/700-mvneta-tx-queue-workaround.patch (limited to 'pkgs/patches-linux-5.15/700-mvneta-tx-queue-workaround.patch') diff --git a/pkgs/patches-linux-5.15/700-mvneta-tx-queue-workaround.patch b/pkgs/patches-linux-5.15/700-mvneta-tx-queue-workaround.patch new file mode 100644 index 0000000..6c07a29 --- /dev/null +++ b/pkgs/patches-linux-5.15/700-mvneta-tx-queue-workaround.patch @@ -0,0 +1,38 @@ +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 +@@ -4987,6 +4987,16 @@ static int mvneta_setup_tc(struct net_de + } + } + ++#ifndef CONFIG_ARM64 ++static u16 mvneta_select_queue(struct net_device *dev, struct sk_buff *skb, ++ struct net_device *sb_dev) ++{ ++ /* XXX: hardware queue scheduling is broken, ++ * use only one queue until it is fixed */ ++ return 0; ++} ++#endif ++ + static const struct net_device_ops mvneta_netdev_ops = { + .ndo_open = mvneta_open, + .ndo_stop = mvneta_stop, +@@ -4997,6 +5007,9 @@ static const struct net_device_ops mvnet + .ndo_fix_features = mvneta_fix_features, + .ndo_get_stats64 = mvneta_get_stats64, + .ndo_eth_ioctl = mvneta_ioctl, ++#ifndef CONFIG_ARM64 ++ .ndo_select_queue = mvneta_select_queue, ++#endif + .ndo_bpf = mvneta_xdp, + .ndo_xdp_xmit = mvneta_xdp_xmit, + .ndo_setup_tc = mvneta_setup_tc, -- cgit v1.2.3