netifd: update to the latest version, rewrite RPS/XPS handling

Remove RPS/XPS support from netifd core, move the logic to a hotplug
script that uses a different policy which provides better performance
and more fairness across flows

Signed-off-by: Felix Fietkau <nbd@nbd.name>

diff --git a/package/network/config/netifd/Makefile b/package/network/config/netifd/Makefile
index d62b60ad98941cddb29d56c64db258fbb660e445..6e208ddd964195b2aedfcc9e3d0eb20396007126 100644 (file)
--- a/package/network/config/netifd/Makefile
+++ b/package/network/config/netifd/Makefile
@@ -5,9 +5,9 @@ PKG_RELEASE:=4
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL=$(PROJECT_GIT)/project/netifd.git
-PKG_SOURCE_DATE:=2018-02-05
-PKG_SOURCE_VERSION:=1be329c66326c86d7a48ba71004fcef7691bbbf9
-PKG_MIRROR_HASH:=06c1c24ed56b4fe39b92b33719f8bd4f9a8fe3c6a25ce02a6a245e859f1237bf
+PKG_SOURCE_DATE:=2018-02-26
+PKG_SOURCE_VERSION:=8cdb17d2c58d5c3ecb57bdaf1981cd72b4948db1
+PKG_MIRROR_HASH:=5c0859b779c9665edd7c105b92b7022fa7544e3a704e0e05bb3ab11ba0c30384
 PKG_MAINTAINER:=Felix Fietkau <nbd@nbd.name>
 
 PKG_LICENSE:=GPL-2.0

diff --git a/package/network/config/netifd/files/etc/hotplug.d/net/20-smp-tune b/package/network/config/netifd/files/etc/hotplug.d/net/20-smp-tune
new file mode 100644 (file)
index 0000000..ab9a904
--- /dev/null
+++ b/package/network/config/netifd/files/etc/hotplug.d/net/20-smp-tune
@@ -0,0 +1,67 @@
+#!/bin/sh
+[ "$ACTION" = add ] || exit
+
+NPROCS="$(grep -c "^processor.*:" /proc/cpuinfo)"
+[ "$NPROCS" -gt 1 ] || exit
+
+PROC_MASK="$(( (1 << $NPROCS) - 1 ))"
+
+find_irq_cpu() {
+       local dev="$1"
+       local match="$(grep -m 1 "$dev\$" /proc/interrupts)"
+       local cpu=0
+
+       [ -n "$match" ] && {
+               set -- $match
+               shift
+               for cur in `seq 1 $NPROCS`; do
+                       [ "$1" -gt 0 ] && {
+                               cpu=$(($cur - 1))
+                               break
+                       }
+                       shift
+               done
+       }
+
+       echo "$cpu"
+}
+
+set_hex_val() {
+       local file="$1"
+       local val="$2"
+       val="$(printf %x "$val")"
+       [ -n "$DEBUG" ] && echo "$file = $val"
+       echo "$val" > "$file"
+}
+
+default_ps="$(uci get "network.@globals[0].default_ps")"
+[ -n "$default_ps" -a "$default_ps" != 1 ] && exit 0
+
+exec 512>/var/lock/smp_tune.lock
+flock 512 || exit 1
+
+for dev in /sys/class/net/*; do
+       [ -d "$dev" ] || continue
+
+       # ignore virtual interfaces
+       [ -n "$(ls "${dev}/" | grep '^lower_')" ] && continue
+       [ -d "${dev}/device" ] || continue
+
+       device="$(readlink "${dev}/device")"
+       device="$(basename "$device")"
+       irq_cpu="$(find_irq_cpu "$device")"
+       irq_cpu_mask="$((1 << $irq_cpu))"
+
+       for q in ${dev}/queues/rx-*; do
+               set_hex_val "$q/rps_cpus" "$(($PROC_MASK & ~$irq_cpu_mask))"
+       done
+
+       ntxq="$(ls -d ${dev}/queues/tx-* | wc -l)"
+
+       idx=$(($irq_cpu + 1))
+       for q in ${dev}/queues/tx-*; do
+               set_hex_val "$q/xps_cpus" "$((1 << $idx))"
+               let "idx = idx + 1"
+               [ "$idx" -ge "$NPROCS" ] && idx=0
+       done
+done