#!/bin/bash -xe

# Interface towards UPF:
IFACE_RAN="enp2s0f0np0"
IFACE_CN="enp2s0f1np1"
IFACE_APN="apn-flood"

# Disable ethernet flow control:
sudo ethtool -A $IFACE_RAN autoneg off rx off tx off
sudo ethtool -A $IFACE_CN autoneg off rx off tx off
# Increase NIC buffers:
sudo ethtool -G $IFACE_RAN rx 8192 tx 8192
sudo ethtool -G $IFACE_CN rx 8192 tx 8192

# Enable IP forwarding:
sudo sysctl -w net.ipv4.ip_forward=1

# Increase UDP buffer memory:
sudo sysctl -w net.ipv4.udp_mem="763563 900000000 1000000000"
sudo sysctl -w net.core.optmem_max=16000000
sudo sysctl -w net.core.rmem_max=2000000000
sudo sysctl -w net.core.rmem_default=2000000000
sudo sysctl -w net.core.wmem_max=2000000000
sudo sysctl -w net.core.wmem_default=2000000000
sudo sysctl -w net.core.netdev_max_backlog=2000
sudo sysctl -w net.core.netdev_budget=600

# Set up UPF address:
sudo ip addr add 172.16.31.2/24 dev $IFACE_RAN || true;
sudo ip addr add 172.16.32.1/24 dev $IFACE_CN || true;

# Set up UE IP routes:
# FIXME: These 2 below need to be done *after* osmo-upf creates the iface....
#sudo ip addr add 192.168.1.1/16 dev $IFACE_APN
sudo ip route add 192.168.0.0/16 dev $IFACE_APN