cookbooks/fb_network_scripts/templates/default/ifup-local.erb

#!/bin/sh
#
# This file is maintained by Chef. Do not edit, all changes will be
# overwritten. See fb_network_scripts/README.md
#
CONFIG="$1"

<%
  # Apply sysctl overrides on interface restart
  node['fb_network_scripts']['ifup']['sysctl'].to_hash.each do |key, val|
    if node['fb_sysctl'][key]
      Chef::Log.warn("fb_network_scripts: Sysctl #{key} is already defined in fb_sysctl!")
      next
    end
    if node['fb_network_scripts']['ifup']['sysctl_skip_list'].include?(key)
      Chef::Log.warn("fb_network_scripts: Sysctl #{key} is defined in the skip list!")
      next
    end
-%>
/sbin/sysctl -e -w <%= key %>=<%= val %> >/dev/null 2>&1
<%
  end

  # Run ethtool commands
  node['fb_network_scripts']['ifup']['ethtool'].each do |ethtool_change|
    interface = ethtool_change['interface']
    change_field = ethtool_change['field']
    # Sadly in ethtool the field you want to change and the one you want to check
    # do not always match. Example: receive-hashing in -k
    if ethtool_change['check_field']
      check_field = ethtool_change['check_field']
    else
      check_field = change_field
    end
    check_subcommand = ethtool_change['subcommand'].downcase
    subcommand = ethtool_change['subcommand'].upcase
    # ethtool output is inconsistent. If needed, pipe to format to something
    # reasonable
    if ethtool_change['check_pipe']
      check_pipe = "| #{ethtool_change['check_pipe']}"
    else
      check_pipe = ""
    end
    value = ethtool_change['value']

    check_cond = "\"`ethtool #{check_subcommand} #{interface} #{check_pipe} | awk '/#{check_field}:/{print $2}'`\" != \"#{value}\""
    ethtool_cmd = "ethtool #{subcommand} #{interface} #{change_field} #{value}"
-%>
if [ "$1" = <%= interface %> ] || [ "$1" = 'all' ]; then
  if [ <%= check_cond %> ]; then
    <%= ethtool_cmd %>
  fi
fi
<%
  end

  # Run any extra ifup-local logic
  node['fb_network_scripts']['ifup']['extra_commands'].each do |cmd|
%>
<%= cmd %> "$CONFIG"
<%
  end
%>

exit 0