[Mellanox] Expose SDK share buffer and unix socket from syncd (#2951)

* expose SDK share buffer and unix socket from syncd
* fix PR comments
* fix community comments and add TODO

files/build_templates/docker_image_ctl.j2

@@ -134,6 +134,9 @@ start() {
     echo "Creating new {{docker_container_name}} container"
 {%- else %}
     echo "Creating new {{docker_container_name}} container with HWSKU $HWSKU"
+{%- endif %}
+{%- if sonic_asic_platform == "mellanox" %}
+    # TODO: Mellanox will remove the --tmpfs exception after SDK socket path changed in new SDK version 
 {%- endif %}
     docker create {{docker_image_run_opt}} \
 {%- if '--log-driver=json-file' in docker_image_run_opt or '--log-driver' not in docker_image_run_opt %}
@@ -146,6 +149,10 @@ start() {
         -e PRM_SNIFFER \
         -e PRM_SNIFFER_FILE_PATH \
         -v /var/log/mellanox/sniffer:/var/log/mellanox/sniffer:rw \
+        -v mlnx_sdk_socket:/tmp \
+        -v /dev/shm:/dev/shm:rw \
+{%- else %}
+        --tmpfs /tmp \
 {%- endif %}
 {%- if docker_container_name == "pmon" %}
         -v /var/run/hw-management:/var/run/hw-management:rw \
@@ -156,7 +163,9 @@ start() {
 {%- if docker_container_name != "database" %}
         -v /usr/share/sonic/device/$PLATFORM/$HWSKU:/usr/share/sonic/hwsku:ro \
 {%- endif %}
+{%- if sonic_asic_platform != "mellanox" %}
         --tmpfs /tmp \
+{%- endif %}
         --tmpfs /var/tmp \
         --name={{docker_container_name}} {{docker_image_name}}:latest || {
             echo "Failed to docker run" >&1