init default value

Signed-off-by: Ze Gan <[email protected]>

dash-pipeline/SAI/src/default_value.cpp

@@ -0,0 +1,25 @@
+#include "default_value.h"
+
+#include <map>
+
+std::vector<sai_attribute_t> merge_default_values(
+    const std::vector<sai_attribute_t>& attrs,
+    const std::vector<sai_attribute_t>& default_values) {
+
+    std::vector<sai_attribute_t> merged_attrs;
+    std::map<sai_attr_id_t, sai_attribute_t> attrs_map;
+
+    for (const auto &attr : default_values) {
+        attrs_map[attr.id] = attr;
+    }
+
+    for (const auto &attr : attrs) {
+        attrs_map[attr.id] = attr;
+    }
+
+    for (const auto &pair : attrs_map) {
+        merged_attrs.push_back(pair.second);
+    }
+
+    return merged_attrs;
+}

dash-pipeline/SAI/src/default_value.h

@@ -0,0 +1,13 @@
+#pragma once
+
+#include <vector>
+
+extern "C"
+{
+#include "sai.h"
+}
+
+
+std::vector<sai_attribute_t> merge_default_values(
+    const std::vector<sai_attribute_t>& attrs,
+    const std::vector<sai_attribute_t>& default_values);

dash-pipeline/SAI/templates/imp/default_value.j2

@@ -0,0 +1,77 @@
+    // Set default value block
+    {
+        {% for sai_attr in table.sai_attributes %}
+
+        /**
+        * Set default value for SAI_{{ table.name | upper }}_ATTR_{{ sai_attr.name | upper }}
+        */
+        do {
+
+            // attribute already exists on current attribute list
+            if (std::find_if(attrs.begin(), attrs.end(), [](const sai_attribute_t &attr) {
+                return attr.id == SAI_{{ table.name | upper }}_ATTR_{{ sai_attr.name | upper }};
+                }) != attrs.end())
+            {
+                break;
+            }
+
+            // conditional attributes should be populated by user
+
+            {% if sai_attr.isreadonly == 'true' %}
+                // can't be read only
+                break;
+            {% endif %}
+
+            // can't be mandatory on create
+
+            // there is no default value
+
+            // is valid only
+            {% if table.actions | length > 1 %}
+            {% if sai_attr.param_actions | length == 0 %}
+            // always set default attribute in this case, even if condition is not set
+            // (see github discussion https://github.com/sonic-net/DASH/pull/547)
+            {% else %}
+            bool match_action = false;
+            auto action_itr = find_if(attrs.begin(), attrs.end(), [](const sai_attribute_t &attr) {
+                return attr.id == SAI_{{ table.name | upper }}_ATTR_ACTION;
+            });
+            sai_int32_t action_value = SAI_{{ table.name | upper }}_ACTION_{{ table.actions[0].name | upper }};
+            if (action_itr != attrs.end())
+            {
+                action_value = action_itr->value.s32;
+            }
+            {% for action in sai_attr.param_actions %}
+            match_action |= action_value == SAI_{{ table.name | upper }}_ACTION_{{ action | upper }};
+            {% endfor %}
+            if (!match_action)
+            {
+                break;
+            }
+            {% endif %}
+            {% endif %}
+
+            // set default value
+            {% if sai_attr.default is defined %}
+            sai_attribute_t a = {};
+            a.id = SAI_{{ table.name | upper }}_ATTR_{{ sai_attr.name | upper }};
+            {% if sai_attr.default and sai_attr.default != "empty" %}
+            {% if sai_attr.type == "sai_ip_address_t" %}
+            sai_deserialize_ip_address("{{ sai_attr.default }}", &a.value.ipaddr);
+            {% elif sai_attr.type == "sai_uint32_t" %}
+            a.value.u32 = {{ sai_attr.default }};
+            {% elif sai_attr.default == "vendor" %}
+            // Hardcode vendor to zero
+            {% else %}
+            a.value.s32 = {{ sai_attr.default }};
+            {% endif %}
+            {% endif %}
+            DASH_LOG_NOTICE("adding SAI_{{ table.name | upper }}_ATTR_{{ sai_attr.name | upper }} with default value");
+            attrs.push_back(a);
+            break;
+            {% endif %}
+
+        } while(0);
+
+        {% endfor %}
+    }

dash-pipeline/SAI/templates/imp/default_value_define.j2

@@ -0,0 +1,21 @@
+
+// SAI_{{ table.name | upper }}_ACTION_{{ action.name | upper }}
+
+static std::vector<sai_attribute_t> set_default_{{ table.name }}_{{ action.name }}_attributes() {
+    std::vector<sai_attribute_t> attrs;
+
+    {% for sai_attr in table.sai_attributes %}
+    {% if sai_attr.param_actions | length == 0 or action.name in sai_attr.param_actions %}
+    {
+        {% include 'templates/imp/default_value_set.j2' %}
+    }
+    {% endif %}
+    {% endfor %}
+
+    return attrs;
+}
+
+static const std::vector<sai_attribute_t>& get_default_{{ table.name }}_{{ action.name }}_attributes() {
+    static const std::vector<sai_attribute_t> attrs = set_default_{{ table.name }}_{{ action.name }}_attributes();
+    return attrs;
+}

dash-pipeline/SAI/templates/imp/default_value_merge.j2

@@ -0,0 +1,4 @@
+{
+
+    attrs = merge_default_values(attrs, get_default_{{ table.name }}_{{ action.name }}_attributes());
+}

dash-pipeline/SAI/templates/imp/default_value_set.j2

@@ -0,0 +1,18 @@
+// set default value
+{% if sai_attr.default is defined %}
+sai_attribute_t a = {};
+a.id = SAI_{{ table.name | upper }}_ATTR_{{ sai_attr.name | upper }};
+{% if sai_attr.default and sai_attr.default != "empty" %}
+{% if sai_attr.type == "sai_ip_address_t" %}
+sai_deserialize_ip_address("{{ sai_attr.default }}", &a.value.ipaddr);
+{% elif sai_attr.type == "sai_uint32_t" %}
+a.value.u32 = {{ sai_attr.default }};
+{% elif sai_attr.default == "vendor" %}
+// Hardcode vendor to zero
+{% else %}
+a.value.s32 = {{ sai_attr.default }};
+{% endif %}
+{% endif %}
+DASH_LOG_NOTICE("adding SAI_{{ table.name | upper }}_ATTR_{{ sai_attr.name | upper }} with default value");
+attrs.push_back(a);
+{% endif %}

dash-pipeline/SAI/templates/saiapi.cpp.j2

@@ -1,12 +1,19 @@
 #include "utils.h"
 #include "saiimpl.h"
+#include "default_value.h"
 
 extern "C" {
 #include "saimetadata.h"
 }
 
 using namespace dash::utils;
 
+{% for table in tables %}
+{% for action in table.actions %}
+{% include 'templates/imp/default_value_define.j2' %}
+{% endfor %}
+{% endfor %}
+
 {% set registered_group = [] %}
 {% for table in tables %}
 {% if table.name in registered_group %}{% continue %}{% endif %}
@@ -162,6 +169,7 @@ static sai_status_t dash_sai_create_{{ table.name }}(
     {% for action in table.actions %}
     actionId = {{action.id}}; // SAI_{{ table.name | upper }}_ACTION_{{ action.name | upper }}
     //expectedParams = {{ action.params|length }};
+    {% include 'templates/imp/default_value_merge.j2' %}
     {% endfor %}
     {% else %}
     // Search the action
@@ -176,6 +184,7 @@ static sai_status_t dash_sai_create_{{ table.name }}(
                 {
                     actionId = {{action.id}};
                     //expectedParams = {{ action.params|length }};
+                    {% include 'templates/imp/default_value_merge.j2' %}
                     break;
                 }
                 {% endfor %}
@@ -462,6 +471,7 @@ static sai_status_t dash_sai_create_{{ table.name }}(
     {% for action in table.actions %}
     actionId = {{action.id}}; // SAI_{{ table.name | upper }}_ACTION_{{ action.name | upper }}
     //expectedParams = {{ action.params|length }};
+    {% include 'templates/imp/default_value_merge.j2' %}
     {% endfor %}
     {% else %}
     // Search the action
@@ -476,6 +486,7 @@ static sai_status_t dash_sai_create_{{ table.name }}(
                 {
                     actionId = {{action.id}};
                     //expectedParams = {{ action.params|length }};
+                    {% include 'templates/imp/default_value_merge.j2' %}
                     break;
                 }
                 {% endfor %}