Move `BLOB_SIDECAR_SUBNET_COUNT` to networking config

configs/mainnet.yaml

@@ -132,3 +132,5 @@ MAX_REQUEST_BLOCKS_DENEB: 128
 MAX_REQUEST_BLOB_SIDECARS: 768
 # `2**12` (= 4096 epochs, ~18 days)
 MIN_EPOCHS_FOR_BLOB_SIDECARS_REQUESTS: 4096
+# `6`
+BLOB_SIDECAR_SUBNET_COUNT: 6

configs/minimal.yaml

@@ -133,3 +133,5 @@ MAX_REQUEST_BLOCKS_DENEB: 128
 MAX_REQUEST_BLOB_SIDECARS: 768
 # `2**12` (= 4096 epochs, ~18 days)
 MIN_EPOCHS_FOR_BLOB_SIDECARS_REQUESTS: 4096
+# `6`
+BLOB_SIDECAR_SUBNET_COUNT: 6

specs/deneb/p2p-interface.md

@@ -40,11 +40,14 @@ The specification of these changes continues in the same format as the network s
 
 ### Configuration
 
+*[New in Deneb:EIP4844]*
+
 | Name                                     | Value                             | Description                                                         |
 |------------------------------------------|-----------------------------------|---------------------------------------------------------------------|
 | `MAX_REQUEST_BLOCKS_DENEB`               | `2**7` (= 128)                    | Maximum number of blocks in a single request                        |
-| `MAX_REQUEST_BLOB_SIDECARS`              | `MAX_REQUEST_BLOCKS_DENEB * MAX_BLOBS_PER_BLOCK`      | Maximum number of blob sidecars in a single request                 |
-| `MIN_EPOCHS_FOR_BLOB_SIDECARS_REQUESTS` | `2**12` (= 4096 epochs, ~18 days) | The minimum epoch range over which a node must serve blob sidecars |
+| `MAX_REQUEST_BLOB_SIDECARS`              | `MAX_REQUEST_BLOCKS_DENEB * MAX_BLOBS_PER_BLOCK` | Maximum number of blob sidecars in a single request  |
+| `MIN_EPOCHS_FOR_BLOB_SIDECARS_REQUESTS`  | `2**12` (= 4096 epochs, ~18 days) | The minimum epoch range over which a node must serve blob sidecars  |
+| `BLOB_SIDECAR_SUBNET_COUNT`              | `6`                               | The number of blob sidecar subnets used in the gossipsub protocol.  |
 
 ### Containers
 

specs/deneb/validator.md

@@ -10,8 +10,6 @@
 
 - [Introduction](#introduction)
 - [Prerequisites](#prerequisites)
-- [Constants](#constants)
-  - [Misc](#misc)
 - [Helpers](#helpers)
   - [`BlobsBundle`](#blobsbundle)
   - [Modified `GetPayloadResponse`](#modified-getpayloadresponse)
@@ -40,14 +38,6 @@ All behaviors and definitions defined in this document, and documents it extends
 All terminology, constants, functions, and protocol mechanics defined in the updated [Beacon Chain doc of Deneb](./beacon-chain.md) are requisite for this document and used throughout.
 Please see related Beacon Chain doc before continuing and use them as a reference throughout.
 
-## Constants
-
-### Misc
-
-| Name | Value | Unit |
-| - | - | :-: |
-| `BLOB_SIDECAR_SUBNET_COUNT` | `6` | *[New in Deneb:EIP4844]* The number of blob sidecar subnets used in the gossipsub protocol. |
-
 ## Helpers
 
 ### `BlobsBundle`

tests/core/pyspec/eth2spec/test/deneb/unittests/test_config_invariants.py

@@ -18,3 +18,5 @@ def test_length(spec):
 def test_networking(spec):
     assert spec.MAX_BLOBS_PER_BLOCK < spec.MAX_BLOB_COMMITMENTS_PER_BLOCK
     assert spec.config.MAX_REQUEST_BLOB_SIDECARS == spec.config.MAX_REQUEST_BLOCKS_DENEB * spec.MAX_BLOBS_PER_BLOCK
+    # Start with the same size, but `BLOB_SIDECAR_SUBNET_COUNT` could potentially increase later.
+    assert spec.config.BLOB_SIDECAR_SUBNET_COUNT == spec.MAX_BLOBS_PER_BLOCK