SizeofRtMsghdr         = 0x60
	SizeofRtMetrics        = 0x38
)

type IfMsghdr struct {
	Msglen  uint16
	Version uint8
	Type    uint8
	Hdrlen  uint16
	Index   uint16
	Tableid uint16
	Pad1    uint8
	Pad2    uint8
	Addrs   int32
	Flags   int32
	Xflags  int32
	Data    IfData
}

type IfData struct {
	Type         uint8
	Addrlen      uint8
	Hdrlen       uint8

}

// Files returns the file name table of this compilation unit as of
// the current position in the line table. The file name table may be
// referenced from attributes in this compilation unit such as
// [AttrDeclFile].
//
// Entry 0 is always nil, since file index 0 represents "no file".
//
// The file name table of a compilation unit is not fixed. Files
// returns the file table as of the current position in the line

    eraseAll();
  }

  private ArrayTable(Table<R, C, ? extends @Nullable V> table) {
    this(table.rowKeySet(), table.columnKeySet());
    putAll(table);
  }

  private ArrayTable(ArrayTable<R, C, V> table) {
    rowList = table.rowList;
    columnList = table.columnList;
    rowKeyToIndex = table.rowKeyToIndex;
    columnKeyToIndex = table.columnKeyToIndex;
    @SuppressWarnings("unchecked")

}

table LessOptions {
}

table LessEqualOptions {
}

table NegOptions {
}

table SelectOptions {
}

table SliceOptions {
}

table TransposeConvOptions {
  padding:Padding;
  stride_w:int;
  stride_h:int;
}

table ExpandDimsOptions {
}

table SparseToDenseOptions {
  validate_indices:bool;
}

table EqualOptions {
}

For context, there are 3 basic iptables binaries we use.

- iptables
- iptables-save
- iptables-restore

But with the kernel legacy/nft split, there are parallel binaries for each of those, and again for ipv6 tables, so the actual potential binary set on any given linux machine can be some combination of:

- iptables-legacy
- iptables-nft
- ip6tables
- iptables-legacy-save
- iptables-nft-save
- iptables-legacy-restore

	// PC tables are arrays of ptr-sized integers representing pairs [PC,PCFlags] for every instrumented block.
	// The number of PCs and PCFlags is the same as the number of 8-bit counters. Each PC table entry has
	// the size of two ptr-sized integers. We allocate one more byte than what we actually need so that we can
	// get a pointer representing the end of the PC table array.

all
rule 'MD002', :level => 1
rule 'MD007', :indent => 4
rule 'MD013', :line_length => 160, :code_blocks => false, :tables => false
rule 'MD026', :punctuation => ".,;:!"
exclude_rule 'MD013'
exclude_rule 'MD014'
exclude_rule 'MD030'
exclude_rule 'MD032'
exclude_rule 'MD033'
exclude_rule 'MD041'

	SizeofRtMsghdr         = 0x60
	SizeofRtMetrics        = 0x38
)

type IfMsghdr struct {
	Msglen  uint16
	Version uint8
	Type    uint8
	Hdrlen  uint16
	Index   uint16
	Tableid uint16
	Pad1    uint8
	Pad2    uint8
	Addrs   int32
	Flags   int32
	Xflags  int32
	Data    IfData
}

type IfData struct {
	Type         uint8
	Addrlen      uint8
	Hdrlen       uint8

## Create the tables

In this case, we are creating the tables in the same Python file, but in production, you would probably want to create them with Alembic, integrated with migrations, etc.

Here, this section would run directly, right before starting your **FastAPI** application.

* Create an `engine`.
* Create all the tables from the `metadata` object.

```Python hl_lines="25-28"

				next:   t.next,
			}
			t.prefix = t.prefix[:n]
			t.next = next
			next.add(key[n:], val, priority, r)
		}
	} else if t.table != nil {
		// Insert into existing table.
		m := r.mapping[key[0]]
		if t.table[m] == nil {
			t.table[m] = new(trieNode)
		}
		t.table[m].add(key[1:], val, priority, r)
	} else {
		t.prefix = key
		t.next = new(trieNode)
		t.next.add("", val, priority, r)
	}
}