mirror of
https://github.com/openvswitch/ovs
synced 2025-08-22 18:07:40 +00:00
5f44aaba7b
Generate datapath ovs key fields offset and size array macros as a pre-step for bit-wise comparing fields, with no functional change. Reviewed-by: Roi Dayan <roid@mellanox.com> Signed-off-by: Eli Britstein <elibr@mellanox.com> Signed-off-by: Ben Pfaff <blp@ovn.org>
61 lines
2.0 KiB
Bash
Executable File
61 lines
2.0 KiB
Bash
Executable File
#!/bin/sh
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hfile=$1
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generate_fields_macros () {
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local struct_name=$1
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local line_start
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local num_lines
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local line_end
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local awk_cmd
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local STRUCT
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# line_start is the line number where the definition of the struct begin
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# line_end is the line number where the definition of the struct ends
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line_start=`grep -nw $struct_name $hfile | grep { | cut -d ":" -f1`
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num_lines=`tail -n +${line_start} $hfile | grep -n -m1 } | cut -d ":" -f1`
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line_end=$((line_start+num_lines-1))
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STRUCT=`echo $struct_name | tr [a-z] [A-Z]`
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echo "#define ${STRUCT}_OFFSETOF_SIZEOF_ARR { \\"
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# for all the field lines, including the terminating }, remove ";" and
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# replace with an item of {offsetof, sizeof}.
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# 3 awk fields are for type struct <struct name> and field <field_name>
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# 2 awk fields are for type <type> and field <field_name>
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# else - terminating the array by item {0, 0}
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awk_cmd="'{"
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awk_cmd=$awk_cmd' if (NF == 3)'
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awk_cmd=$awk_cmd' print " {offsetof(struct '"${struct_name}"', "$3"), sizeof("$1,$2")}, \\";'
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awk_cmd=$awk_cmd' else if (NF == 2)'
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awk_cmd=$awk_cmd' print " {offsetof(struct '"${struct_name}"', "$2"), sizeof(" $1")}, \\";'
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awk_cmd=$awk_cmd' else'
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awk_cmd=$awk_cmd' print " {0, 0}}";'
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awk_cmd=$awk_cmd"}'"
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awk -F ";" "NR>${line_start} && NR<=${line_end}"' {print $1}' $hfile | eval "awk $awk_cmd"
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echo
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echo
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}
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echo "/* Generated automatically from <include/odp-netlink.h> -- do not modify! */"
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echo "#ifndef ODP_NETLINK_MACROS_H"
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echo "#define ODP_NETLINK_MACROS_H"
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echo
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echo
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generate_fields_macros "ovs_key_ethernet"
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generate_fields_macros "ovs_key_ipv4"
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generate_fields_macros "ovs_key_ipv6"
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generate_fields_macros "ovs_key_tcp"
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generate_fields_macros "ovs_key_udp"
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generate_fields_macros "ovs_key_sctp"
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generate_fields_macros "ovs_key_icmp"
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generate_fields_macros "ovs_key_icmpv6"
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generate_fields_macros "ovs_key_arp"
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generate_fields_macros "ovs_key_nd"
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generate_fields_macros "ovs_key_nd_extensions"
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echo
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echo "#endif"
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