[docker-sonic-vs]: More changes to support DPU-2P HWKSU (#15695)

Why I did it
port_config.ini and hwsku.json are needed to generate the default config
switch_type needs to be "dpu" to spawn the right set of processes during dvs initialization and to make sure that DASH APIs can be handled properly

Work item tracking
Microsoft ADO 24375371:

How I did it
Use the same hwsku.json and port_config.ini for DPU-2P as the ones used for Nvidia-MBF2H536C SKU in nvidia-sonic sonic-buildimage repo.
Set switch_type to "dpu" in DEVICE_METADATA configuration to make sure DASH specific APIs are handled properly

Signed-off-by: Prabhat Aravind <paravind@microsoft.com>

device/virtual/x86_64-kvm_x86_64-r0/DPU-2P/hwsku.json

@@ -0,0 +1,10 @@
+{
+    "interfaces": {
+        "Ethernet0": {
+            "default_brkout_mode": "1x100G"
+        },
+        "Ethernet4": {
+            "default_brkout_mode": "1x100G"
+        }
+    }
+}

device/virtual/x86_64-kvm_x86_64-r0/DPU-2P/port_config.ini

@@ -0,0 +1,3 @@
+# name          lanes               alias     index
+Ethernet0       0,1,2,3             etp1      1
+Ethernet4       4,5,6,7             etp2      2

device/virtual/x86_64-kvm_x86_64-r0/DPU-2P/sai_dpu_2p.profile

@@ -1,4 +1,4 @@
-SAI_VS_SWITCH_TYPE=SAI_VS_SWITCH_TYPE_NPU
+SAI_VS_SWITCH_TYPE=SAI_VS_SWITCH_TYPE_DPU_SIMU_2P
 SAI_VS_HOSTIF_USE_TAP_DEVICE=true
 SAI_VS_INTERFACE_LANE_MAP_FILE=/usr/share/sonic/hwsku/lanemap.ini
 SAI_VS_CORE_PORT_INDEX_MAP_FILE=/usr/share/sonic/hwsku/coreportindexmap.ini

platform/vs/docker-sonic-vs/Dockerfile.j2

@@ -147,7 +147,7 @@ COPY ["zero_profiles.json", "/etc/sonic"]
 COPY ["buffermgrd.sh", "/usr/bin/"]
 
 COPY ["platform.json", "/usr/share/sonic/device/x86_64-kvm_x86_64-r0/"]
-COPY ["platform-npu-2p.json", "/usr/share/sonic/device/x86_64-kvm_x86_64-r0/"]
+COPY ["platform-dpu-2p.json", "/usr/share/sonic/device/x86_64-kvm_x86_64-r0/"]
 COPY ["hwsku.json", "/usr/share/sonic/device/x86_64-kvm_x86_64-r0/Force10-S6000/"]
 COPY ["hwsku.json", "/usr/share/sonic/device/x86_64-kvm_x86_64-r0/brcm_gearbox_vs/"]
 COPY ["hwsku.json", "/usr/share/sonic/device/x86_64-kvm_x86_64-r0/Mellanox-SN2700/"]

platform/vs/docker-sonic-vs/init_cfg.json.j2

@@ -2,16 +2,20 @@
     "DEVICE_METADATA": {
         "localhost": {
             "mac": "{{ system_mac }}",
+            "switch_type": "{{ switch_type }}",
             "buffer_model": "traditional"
         }
     },
-{% set features = ["swss", "bgp", "teamd", "nat", "database", "lldp", "dhcp_relay", "macsec"] %}
+{% if switch_type != "dpu" %}
+{% set features = ({"swss": "enabled", "bgp": "enabled", "teamd": "enabled", "nat": "enabled", "database": "enabled", "lldp": "enabled", "dhcp_relay": "enabled", "macsec": "enabled"}) %}
+{% else %}
+{% set features = ({"swss": "enabled", "bgp": "enabled", "teamd": "disabled", "nat": "disabled", "database": "enabled", "lldp": "enabled", "dhcp_relay": "disabled", "macsec": "disabled"}) %}
+{% endif %}
     "FEATURE": {
-{% for feature in features %}
+{% for feature, state in features.items() %}
         "{{ feature }}": {
-            "state": "enabled"
+            "state": "{{ state }}"
         }{% if not loop.last %},{% endif %}
 {% endfor %}
     }
 }
-

platform/vs/docker-sonic-vs/start.sh

@@ -8,9 +8,11 @@
 ln -sf /usr/share/sonic/device/$PLATFORM /usr/share/sonic/platform
 ln -sf /usr/share/sonic/device/$PLATFORM/$HWSKU /usr/share/sonic/hwsku
 
+SWITCH_TYPE=switch
 PLATFORM_CONF=platform.json
-if [[ $HWSKU == "NPU-2P" ]]; then
+if [[ $HWSKU == "DPU-2P" ]]; then
-    PLATFORM_CONF=platform-npu-2p.json
+    SWITCH_TYPE=dpu
+    PLATFORM_CONF=platform-dpu-2p.json
 fi
 
 pushd /usr/share/sonic/hwsku
@@ -38,7 +40,7 @@ mkdir -p /var/run/redis/sonic-db
 cp /etc/default/sonic-db/database_config.json /var/run/redis/sonic-db/
 
 SYSTEM_MAC_ADDRESS=$(ip link show eth0 | grep ether | awk '{print $2}')
-sonic-cfggen -t /usr/share/sonic/templates/init_cfg.json.j2 -a "{\"system_mac\": \"$SYSTEM_MAC_ADDRESS\"}" > /etc/sonic/init_cfg.json
+sonic-cfggen -t /usr/share/sonic/templates/init_cfg.json.j2 -a "{\"system_mac\": \"$SYSTEM_MAC_ADDRESS\", \"switch_type\": \"$SWITCH_TYPE\"}" > /etc/sonic/init_cfg.json
 
 if [[ -f /usr/share/sonic/virtual_chassis/default_config.json ]]; then
     sonic-cfggen -j /etc/sonic/init_cfg.json -j /usr/share/sonic/virtual_chassis/default_config.json --print-data > /tmp/init_cfg.json
@@ -52,22 +54,25 @@ else
     # generate and merge buffers configuration into config file
     if [ -f /usr/share/sonic/hwsku/buffers.json.j2 ]; then
         sonic-cfggen -k $HWSKU -p /usr/share/sonic/device/$PLATFORM/$PLATFORM_CONF -t /usr/share/sonic/hwsku/buffers.json.j2 > /tmp/buffers.json
+        buffers_cmd="-j /tmp/buffers.json"
     fi
     if [ -f /usr/share/sonic/hwsku/qos.json.j2 ]; then
         sonic-cfggen -j /etc/sonic/init_cfg.json -t /usr/share/sonic/hwsku/qos.json.j2 > /tmp/qos.json
+        qos_cmd="-j /tmp/qos.json"
     fi
 
     sonic-cfggen -p /usr/share/sonic/device/$PLATFORM/$PLATFORM_CONF -k $HWSKU --print-data > /tmp/ports.json
     # change admin_status from up to down; Test cases dependent
     sed -i "s/up/down/g" /tmp/ports.json
-    sonic-cfggen -j /etc/sonic/init_cfg.json -j /tmp/buffers.json -j /tmp/qos.json -j /tmp/ports.json --print-data > /etc/sonic/config_db.json
+    sonic-cfggen -j /etc/sonic/init_cfg.json $buffers_cmd $qos_cmd -j /tmp/ports.json --print-data > /etc/sonic/config_db.json
 fi
+
 sonic-cfggen -t /usr/share/sonic/templates/copp_cfg.j2 > /etc/sonic/copp_cfg.json
 
 if [ "$HWSKU" == "Mellanox-SN2700" ]; then
     cp /usr/share/sonic/hwsku/sai_mlnx.profile /usr/share/sonic/hwsku/sai.profile
-elif [ "$HWSKU" == "NPU" ]; then
+elif [ "$HWSKU" == "DPU-2P" ]; then
-    cp /usr/share/sonic/hwsku/sai_npu.profile /usr/share/sonic/hwsku/sai.profile
+    cp /usr/share/sonic/hwsku/sai_dpu_2p.profile /usr/share/sonic/hwsku/sai.profile
 fi
 
 mkdir -p /etc/swss/config.d/