[Mellanox] [SKU] Mellanox-SN4700-C128 SKU added (#11574)

- Why I did it
New SKU for MSN-4700 Platform i.e. Mellanox-SN4700-C128

Requirements:
* Breakout: Port 1-32: 4x100G
* Downlinks: 120 (1-30)
* Uplinks: 8 (31-32)
* Shared Headroom: Enabled
* Over Subscribe Ratio: 1:8
* Default Topology: T2
* Default Cable Length for T2: 1500m
* QoS params: The default ones defined in qos_config.j2 will be applied
* Small Packet Percentage: Used 50% for traditional buffer model Note: For dynamic model, the value defined in LOSSLESS_TRAFFIC_PATTERN|AZURE|small_packet_percentage is used

Additional Details:
Switch Type has to be programmed as SpineRouter through config_db.json in DEVICE_METADATA|localhost|type field for the buffer values & cable lengths defined in the buffers_defaults_t2.j2 to apply on the device
Cable Lengths Used for generating buffer_defaults_{t0,t1,t2}.j2 values

Signed-off-by: Vivek Reddy Karri <vkarri@nvidia.com>

device/mellanox/x86_64-mlnx_msn4700-r0/Mellanox-SN4700-C128/buffers.json.j2

@@ -0,0 +1,15 @@
+{#
+    Copyright (c) 2022 NVIDIA CORPORATION & AFFILIATES.
+    Apache-2.0
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+#}
+{%- set default_topo = 't2' %}
+{%- include 'buffers_config.j2' %}

device/mellanox/x86_64-mlnx_msn4700-r0/Mellanox-SN4700-C128/buffers_defaults_objects.j2

@@ -0,0 +1 @@
+../../x86_64-mlnx_msn2700-r0/Mellanox-SN2700-D48C8/buffers_defaults_objects.j2

device/mellanox/x86_64-mlnx_msn4700-r0/Mellanox-SN4700-C128/buffers_defaults_t0.j2

@@ -0,0 +1,39 @@
+{#
+    Copyright (c) 2022 NVIDIA CORPORATION & AFFILIATES.
+    Apache-2.0
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+#}
+{% set default_cable = '5m' %}
+{% set ingress_lossless_pool_size =  '44910592' %}
+{% set ingress_lossless_pool_xoff  =  '1751040' %}
+{% set egress_lossless_pool_size =  '60817392' %}
+{% set egress_lossy_pool_size =  '44910592' %}
+
+{% import 'buffers_defaults_objects.j2' as defs with context %}
+
+{%- macro generate_buffer_pool_and_profiles_with_inactive_ports(port_names_inactive) %}
+{{ defs.generate_buffer_pool_and_profiles_with_inactive_ports(port_names_inactive) }}
+{%- endmacro %}
+
+{%- macro generate_profile_lists_with_inactive_ports(port_names_active, port_names_inactive) %}
+{{ defs.generate_profile_lists(port_names_active, port_names_inactive) }}
+{%- endmacro %}
+
+{%- macro generate_queue_buffers_with_inactive_ports(port_names_active, port_names_inactive) %}
+{{ defs.generate_queue_buffers(port_names_active, port_names_inactive) }}
+{%- endmacro %}
+
+{%- macro generate_pg_profiles_with_inactive_ports(port_names_active, port_names_inactive) %}
+{{ defs.generate_pg_profiles(port_names_active, port_names_inactive) }}
+{%- endmacro %}

device/mellanox/x86_64-mlnx_msn4700-r0/Mellanox-SN4700-C128/buffers_defaults_t1.j2

@@ -0,0 +1,39 @@
+{#
+    Copyright (c) 2022 NVIDIA CORPORATION & AFFILIATES.
+    Apache-2.0
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+#}
+{% set default_cable = '5m' %}
+{% set ingress_lossless_pool_size =  '44587008' %}
+{% set ingress_lossless_pool_xoff  =  '2074624' %}
+{% set egress_lossless_pool_size =  '60817392' %}
+{% set egress_lossy_pool_size =  '44587008' %}
+
+{% import 'buffers_defaults_objects.j2' as defs with context %}
+
+{%- macro generate_buffer_pool_and_profiles_with_inactive_ports(port_names_inactive) %}
+{{ defs.generate_buffer_pool_and_profiles_with_inactive_ports(port_names_inactive) }}
+{%- endmacro %}
+
+{%- macro generate_profile_lists_with_inactive_ports(port_names_active, port_names_inactive) %}
+{{ defs.generate_profile_lists(port_names_active, port_names_inactive) }}
+{%- endmacro %}
+
+{%- macro generate_queue_buffers_with_inactive_ports(port_names_active, port_names_inactive) %}
+{{ defs.generate_queue_buffers(port_names_active, port_names_inactive) }}
+{%- endmacro %}
+
+{%- macro generate_pg_profiles_with_inactive_ports(port_names_active, port_names_inactive) %}
+{{ defs.generate_pg_profiles(port_names_active, port_names_inactive) }}
+{%- endmacro %}

device/mellanox/x86_64-mlnx_msn4700-r0/Mellanox-SN4700-C128/buffers_defaults_t2.j2

@@ -0,0 +1,44 @@
+{#
+    Copyright (c) 2022 NVIDIA CORPORATION & AFFILIATES.
+    Apache-2.0
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+#}
+{% set default_cable = '1500m' %}
+{%-set ports2cable = {
+            'spinerouter_leafrouter' : '1500m',
+            'spinerouter_spinerouter' : '1500m'
+       }
+-%}
+{% set ingress_lossless_pool_size =  '35094528' %}
+{% set ingress_lossless_pool_xoff  =  '11567104' %}
+{% set egress_lossless_pool_size =  '60817392' %}
+{% set egress_lossy_pool_size =  '35094528' %}
+
+{% import 'buffers_defaults_objects.j2' as defs with context %}
+
+{%- macro generate_buffer_pool_and_profiles_with_inactive_ports(port_names_inactive) %}
+{{ defs.generate_buffer_pool_and_profiles_with_inactive_ports(port_names_inactive) }}
+{%- endmacro %}
+
+{%- macro generate_profile_lists_with_inactive_ports(port_names_active, port_names_inactive) %}
+{{ defs.generate_profile_lists(port_names_active, port_names_inactive) }}
+{%- endmacro %}
+
+{%- macro generate_queue_buffers_with_inactive_ports(port_names_active, port_names_inactive) %}
+{{ defs.generate_queue_buffers(port_names_active, port_names_inactive) }}
+{%- endmacro %}
+
+{%- macro generate_pg_profiles_with_inactive_ports(port_names_active, port_names_inactive) %}
+{{ defs.generate_pg_profiles(port_names_active, port_names_inactive) }}
+{%- endmacro %}

device/mellanox/x86_64-mlnx_msn4700-r0/Mellanox-SN4700-C128/buffers_dynamic.json.j2

@@ -0,0 +1,16 @@
+{#
+    Copyright (c) 2022 NVIDIA CORPORATION & AFFILIATES.
+    Apache-2.0
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+#}
+{%- set default_topo = 't2' %}
+{%- set dynamic_mode = 'true' %}
+{%- include 'buffers_config.j2' %}