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#!/bin/sh
hfile=$1
generate_fields_macros () {
local struct_name=$1
local line_start
local num_lines
local line_end
local awk_cmd
local STRUCT
# line_start is the line number where the definition of the struct begin
# line_end is the line number where the definition of the struct ends
line_start=`grep -nw $struct_name $hfile | grep { | cut -d ":" -f1`
num_lines=`tail -n +${line_start} $hfile | grep -n -m1 } | cut -d ":" -f1`
line_end=$((line_start+num_lines-1))
STRUCT=`echo $struct_name | tr [a-z] [A-Z]`
echo "#define ${STRUCT}_OFFSETOF_SIZEOF_ARR { \\"
# for all the field lines, including the terminating }, remove ";" and
# replace with an item of {offsetof, sizeof}.
# 3 awk fields are for type struct <struct name> and field <field_name>
# 2 awk fields are for type <type> and field <field_name>
# else - terminating the array by item {0, 0}
awk_cmd="'{"
awk_cmd=$awk_cmd' if (NF == 3)'
awk_cmd=$awk_cmd' print " {offsetof(struct '"${struct_name}"', "$3"), sizeof("$1,$2")}, \\";'
awk_cmd=$awk_cmd' else if (NF == 2)'
awk_cmd=$awk_cmd' print " {offsetof(struct '"${struct_name}"', "$2"), sizeof(" $1")}, \\";'
awk_cmd=$awk_cmd' else'
awk_cmd=$awk_cmd' print " {0, 0}}";'
awk_cmd=$awk_cmd"}'"
awk -F ";" "NR>${line_start} && NR<=${line_end}"' {print $1}' $hfile | eval "awk $awk_cmd"
echo
echo
}
echo "/* Generated automatically from <include/odp-netlink.h> -- do not modify! */"
echo "#ifndef ODP_NETLINK_MACROS_H"
echo "#define ODP_NETLINK_MACROS_H"
echo
echo
generate_fields_macros "ovs_key_ethernet"
generate_fields_macros "ovs_key_ipv4"
generate_fields_macros "ovs_key_ipv6"
generate_fields_macros "ovs_key_tcp"
generate_fields_macros "ovs_key_udp"
generate_fields_macros "ovs_key_sctp"
generate_fields_macros "ovs_key_icmp"
generate_fields_macros "ovs_key_icmpv6"
generate_fields_macros "ovs_key_arp"
generate_fields_macros "ovs_key_nd"
generate_fields_macros "ovs_key_nd_extensions"
echo
echo "#endif"
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