struct standard_metadata_t {
// For more details see docs/simple_switch.md
// in https://github.com/p4lang/behavioral-model
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// Should only read, ingress or egress
bit<9> ingress_port;
bit<32> instance_type;
bit<32> packet_length;
bit<48> ingress_global_timestamp;
bit<1> checksum_error;
error parser_error;
// In ingress, read or write.
// In egress, should only read.
bit<9> egress_spec;
bit<16> mcast_grp;
// Should only read, only in egress
bit<9> egress_port;
bit<16> egress_rid;
bit<48> egress_global_timestamp;
bit<32> enq_timestamp;
bit<19> enq_qdepth;
bit<32> deq_timedelta;
bit<19> deq_qdepth;
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