roles/ethtool/files/ethtool

#!/bin/sh

logger -sp info "atmosphere: bumping network rx/tx buffers"

for i in $(ls -l /sys/class/net/*/device/driver/module | cut -d/ -f5); do
  logger -sp info "atmosphere: ${i} bumping network rx/tx buffers"

  CURRENT_RX=$(ethtool -g ${i} | tac | grep -m1 '^RX:' | awk '{ print $2 }')
  CURRENT_RX_MINI=$(ethtool -g ${i} | tac | grep -m1 '^RX Mini:' | awk '{ print $3 }')
  CURRENT_RX_JUMBO=$(ethtool -g ${i} | tac | grep -m1 '^RX Jumbo:' | awk '{ print $3 }')
  CURRENT_TX=$(ethtool -g ${i} | tac | grep -m1 '^TX:' | awk '{ print $2 }')

  logger -sp info "atmosphere: ${i} current rx:${CURRENT_RX}, rxmini:${CURRENT_RX_MINI}, rxjumbo:${CURRENT_RX_JUMBO}, tx:${CURRENT_TX}"

  MAX_RX=$(ethtool -g ${i} | grep -m1 '^RX:' | awk '{ print $2 }')
  MAX_RX_MINI=$(ethtool -g ${i} | grep -m1 '^RX Mini:' | awk '{ print $3 }')
  MAX_RX_JUMBO=$(ethtool -g ${i} | grep -m1 '^RX Jumbo:' | awk '{ print $3 }')
  MAX_TX=$(ethtool -g ${i} | grep -m1 '^TX:' | awk '{ print $2 }')

  logger -sp info "atmosphere: ${i} max rx:${MAX_RX}, rxmini:${MAX_RX_MINI}, rxjumbo:${MAX_RX_JUMBO}, tx:${MAX_TX}"

  ethtool -G ${i} rx ${MAX_RX} tx ${MAX_TX} || :

  if [ "$MAX_RX_MINI" != "n/a" ]; then
    ethtool -G ${i} rx-mini ${MAX_RX_MINI} || :
  fi

  if [ "$MAX_RX_JUMBO" != "n/a" ]; then
    ethtool -G ${i} rx-jumbo ${MAX_RX_JUMBO} || :
  fi
done