[copporch]: Add extra condition to skip trap priority for mlnx (sonic…

…-net#264)

This version of Mellanox SAI implementation doesn't support this
attribute right now. Right now, Mellanox use queue setting to
take care of this case.

orchagent/copporch.cpp

@@ -13,6 +13,7 @@ extern sai_hostif_api_t* sai_hostif_api;
 extern sai_policer_api_t* sai_policer_api;
 extern sai_switch_api_t* sai_switch_api;
 
+#define MLNX_PLATFORM_SUBSTRING "mlnx"
 
 map<string, sai_meter_type_t> policer_meter_map = {
  {"packets", SAI_METER_TYPE_PACKETS},
@@ -111,9 +112,14 @@ void CoppOrch::initDefaultTrapIds()
  attr.value.s32 = SAI_HOSTIF_TRAP_CHANNEL_NETDEV;
  trap_id_attrs.push_back(attr);
 
- attr.id = SAI_HOSTIF_TRAP_ATTR_TRAP_PRIORITY;
- attr.value.u32 = 0;
- trap_id_attrs.push_back(attr);
+ /* Mellanox platform doesn't support trap priority setting */
+ char *platform = getenv("platform");
+ if (!platform || !strstr(platform, MLNX_PLATFORM_SUBSTRING))
+ {
+ attr.id = SAI_HOSTIF_TRAP_ATTR_TRAP_PRIORITY;
+ attr.value.u32 = 0;
+ trap_id_attrs.push_back(attr);
+ }
 
  if (!applyAttributesToTrapIds(m_trap_group_map[default_trap_group], default_trap_ids, trap_id_attrs))
  {
@@ -315,7 +321,7 @@ task_process_status CoppOrch::processCoppRule(Consumer& consumer)
  trap_gr_attribs.push_back(attr);
  }
  //
- // Trap id related attributes
+ // Trap related attributes
  //
  else if (fvField(*i) == copp_trap_action_field)
  {
@@ -327,9 +333,14 @@ task_process_status CoppOrch::processCoppRule(Consumer& consumer)
  }
  else if (fvField(*i) == copp_trap_priority_field)
  {
- attr.id = SAI_HOSTIF_TRAP_ATTR_TRAP_PRIORITY,
- attr.value.u32 = stoul(fvValue(*i), nullptr, 0);
- trap_id_attribs.push_back(attr);
+ /* Mellanox platform doesn't support trap priority setting */
+ char *platform = getenv("platform");
+ if (!platform || !strstr(platform, MLNX_PLATFORM_SUBSTRING))
+ {
+ attr.id = SAI_HOSTIF_TRAP_ATTR_TRAP_PRIORITY,
+ attr.value.u32 = stoul(fvValue(*i), nullptr, 0);
+ trap_id_attribs.push_back(attr);
+ }
  }
  //
  // process policer attributes