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| author | Rafał Miłecki <rafal@milecki.pl> | 2022-07-28 17:46:33 +0200 |
|---|---|---|
| committer | Rafał Miłecki <rafal@milecki.pl> | 2022-07-28 17:46:33 +0200 |
| commit | 57cad53f4e52be987cdd61308ff7d2704baca539 (patch) | |
| tree | d04fe7a2b59fc105013adf5cb50a773fa1045087 | |
| parent | a49212d762fb2635564cd3365651da51d0c535d9 (diff) | |
| download | upstream-57cad53f4e52be987cdd61308ff7d2704baca539.tar.gz upstream-57cad53f4e52be987cdd61308ff7d2704baca539.tar.bz2 upstream-57cad53f4e52be987cdd61308ff7d2704baca539.zip | |
bcm4908: enable & setup packet steering
Without packet steering NAT masquarade speed on BCM4908 /jumps/ between
two speeds:
1. 826 Mb/s (±3 Mb/s)
2. 909 Mb/s (±8 Mb/s)
and it never reaches ~940 Mb/s.
Proper packet steering can improve it. Below are testing results for
running iperf TCP traffic from LAN to WAN. They were used to pick up
golden values.
┌──────────┬──────────┬───────────┐
│ eth0 │ br-lan │ speed │
│ rps_cpus │ rps_cpus │ [Mbps] │
├──────────┼──────────┼───────────┤
│ 0 │ 0 │ 743 / 804 │
│ 0 │ 1 │ 738 / 821 │
│ 0 │ 2 │ ✓ 940 │
│ 0 │ 4 │ ✓ 938 │
│ 0 │ 8 │ ✓ 941 │
├──────────┼──────────┼───────────┤
│ 1 │ 0 │ 829 │
│ 1 │ 1 │ 829 │
│ 1 │ 2 │ ✓ 942 │
│ 1 │ 4 │ ✓ 941 │
│ 1 │ 8 │ ✓ 941 │
├──────────┼──────────┼───────────┤
│ 2 │ 0 │ ✓ 942 │
│ 2 │ 1 │ 926 │
│ 2 │ 2 │ ✓ 942 │
│ 2 │ 4 │ ✓ 942 │
│ 2 │ 8 │ ✓ 941 │
├──────────┼──────────┼───────────┤
│ 4 │ 0 │ ✓ 941 │
│ 4 │ 1 │ 925 │
│ 4 │ 2 │ ✓ 941 │
│ 4 │ 4 │ ✓ 941 │
│ 4 │ 8 │ ✓ 941 │
├──────────┼──────────┼───────────┤
│ 8 │ 0 │ ✓ 942 │
│ 8 │ 1 │ 925 │
│ 8 │ 2 │ ✓ 941 │
│ 8 │ 4 │ ✓ 942 │
│ 8 │ 8 │ ✓ 942 │
└──────────┴──────────┴───────────┘
Ref: fcbd39689ebfe ("bcm53xx: enable & setup packet steering")
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
| -rwxr-xr-x | target/linux/bcm4908/base-files/etc/init.d/fastnetwork | 46 | ||||
| -rw-r--r-- | target/linux/bcm4908/base-files/etc/uci-defaults/05_packet_steering | 3 |
2 files changed, 49 insertions, 0 deletions
diff --git a/target/linux/bcm4908/base-files/etc/init.d/fastnetwork b/target/linux/bcm4908/base-files/etc/init.d/fastnetwork new file mode 100755 index 0000000000..88f6075990 --- /dev/null +++ b/target/linux/bcm4908/base-files/etc/init.d/fastnetwork @@ -0,0 +1,46 @@ +#!/bin/sh /etc/rc.common + +START=25 +USE_PROCD=1 + +start_service() { + reload_service +} + +service_triggers() { + procd_add_reload_trigger "network" + procd_add_reload_trigger "firewall" + procd_add_reload_interface_trigger "lan" +} + +reload_service() { + local packet_steering="$(uci -q get network.@globals[0].packet_steering)" + local num_cpus="$(grep -c "^processor.*:" /proc/cpuinfo)" + local flow_offloading="$(uci -q get firewall.@defaults[0].flow_offloading)" + local flow_offloading_hw="$(uci -q get firewall.@defaults[0].flow_offloading_hw)" + local rps_eth0=0 + local rps_br_lan=0 + + [ "$num_cpus" -le 1 ] && return + + [ "$packet_steering" = 1 ] && { + if [ ${flow_offloading_hw:-0} -gt 0 ]; then + # HW offloading + # Not implemented + : + elif [ ${flow_offloading:-0} -gt 0 ]; then + # SW offloading + # BCM4908 always reaches ~940 Mb/s + : + else + # Default + case "$num_cpus" in + 2) rps_eth0=2; rps_br_lan=2;; + 4) rps_eth0=e; rps_br_lan=e;; + esac + fi + } + + echo $rps_eth0 > /sys/class/net/eth0/queues/rx-0/rps_cpus + echo $rps_br_lan > /sys/class/net/br-lan/queues/rx-0/rps_cpus +} diff --git a/target/linux/bcm4908/base-files/etc/uci-defaults/05_packet_steering b/target/linux/bcm4908/base-files/etc/uci-defaults/05_packet_steering new file mode 100644 index 0000000000..98c9497815 --- /dev/null +++ b/target/linux/bcm4908/base-files/etc/uci-defaults/05_packet_steering @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0-only + +uci set network.@globals[0].packet_steering="1" |