Added Change for given Route ECMP to fallback on Default Route ECMP #3389
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| Original file line number | Diff line number | Diff line change |
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@@ -381,6 +381,70 @@ void RouteOrch::detach(Observer *observer, const IpAddress& dstAddr, sai_object_ | |
| } | ||
| } | ||
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| void RouteOrch::updateDefaultRouteSwapSet(const NextHopGroupKey default_nhg_key, std::set<NextHopKey>& active_default_route_nhops) | ||
| { | ||
| std::set<NextHopKey> current_default_route_nhops; | ||
| current_default_route_nhops.clear(); | ||
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| if (default_nhg_key.getSize() == 1) | ||
| { | ||
| current_default_route_nhops.insert(*default_nhg_key.getNextHops().begin()); | ||
| } | ||
| else | ||
| { | ||
| auto nhgm = m_syncdNextHopGroups[default_nhg_key].nhopgroup_members; | ||
| for (auto nhop = nhgm.begin(); nhop != nhgm.end(); ++nhop) | ||
| { | ||
| current_default_route_nhops.insert(nhop->first); | ||
| } | ||
| } | ||
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| active_default_route_nhops.clear(); | ||
| std::copy(current_default_route_nhops.begin(), current_default_route_nhops.end(), std::inserter(active_default_route_nhops, active_default_route_nhops.begin())); | ||
| } | ||
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| bool RouteOrch::addDefaultRouteNexthopsInNextHopGroup(NextHopGroupEntry& original_next_hop_group, std::set<NextHopKey>& default_route_next_hop_set) | ||
| { | ||
| SWSS_LOG_ENTER(); | ||
| sai_object_id_t nexthop_group_member_id; | ||
| sai_status_t status; | ||
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| for (auto it : default_route_next_hop_set) | ||
| { | ||
| vector<sai_attribute_t> nhgm_attrs; | ||
| sai_attribute_t nhgm_attr; | ||
| nhgm_attr.id = SAI_NEXT_HOP_GROUP_MEMBER_ATTR_NEXT_HOP_GROUP_ID; | ||
| nhgm_attr.value.oid = original_next_hop_group.next_hop_group_id; | ||
| nhgm_attrs.push_back(nhgm_attr); | ||
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| nhgm_attr.id = SAI_NEXT_HOP_GROUP_MEMBER_ATTR_NEXT_HOP_ID; | ||
| nhgm_attr.value.oid = m_neighOrch->getNextHopId(it); | ||
| nhgm_attrs.push_back(nhgm_attr); | ||
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| status = sai_next_hop_group_api->create_next_hop_group_member(&nexthop_group_member_id, gSwitchId, | ||
| (uint32_t)nhgm_attrs.size(), | ||
| nhgm_attrs.data()); | ||
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| if (status != SAI_STATUS_SUCCESS) | ||
| { | ||
| SWSS_LOG_ERROR("Default Route Swap Failed to add next hop member to group %" PRIx64 ": %d\n", | ||
| original_next_hop_group.next_hop_group_id, status); | ||
| task_process_status handle_status = handleSaiCreateStatus(SAI_API_NEXT_HOP_GROUP, status); | ||
| if (handle_status != task_success) | ||
| { | ||
| return parseHandleSaiStatusFailure(handle_status); | ||
| } | ||
| } | ||
| // Increment the Default Route Active NH Reference Count | ||
| m_neighOrch->increaseNextHopRefCount(it); | ||
| gCrmOrch->incCrmResUsedCounter(CrmResourceType::CRM_NEXTHOP_GROUP_MEMBER); | ||
| original_next_hop_group.default_route_nhopgroup_members[it].next_hop_id = nexthop_group_member_id; | ||
| original_next_hop_group.default_route_nhopgroup_members[it].seq_id = 0; | ||
| original_next_hop_group.is_default_route_nh_swap = true; | ||
| } | ||
| return true; | ||
| } | ||
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| bool RouteOrch::validnexthopinNextHopGroup(const NextHopKey &nexthop, uint32_t& count) | ||
| { | ||
| SWSS_LOG_ENTER(); | ||
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@@ -398,6 +462,13 @@ bool RouteOrch::validnexthopinNextHopGroup(const NextHopKey &nexthop, uint32_t& | |
| continue; | ||
| } | ||
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| // Route NHOP Group is swapped by default route nh memeber . do not add Nexthop again. | ||
| // Wait for Nexthop Group Cleanup | ||
| if (nhopgroup->second.is_default_route_nh_swap) | ||
| { | ||
| continue; | ||
| } | ||
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| vector<sai_attribute_t> nhgm_attrs; | ||
| sai_attribute_t nhgm_attr; | ||
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@@ -444,6 +515,7 @@ bool RouteOrch::validnexthopinNextHopGroup(const NextHopKey &nexthop, uint32_t& | |
| ++count; | ||
| gCrmOrch->incCrmResUsedCounter(CrmResourceType::CRM_NEXTHOP_GROUP_MEMBER); | ||
| nhopgroup->second.nhopgroup_members[nexthop].next_hop_id = nexthop_id; | ||
| nhopgroup->second.nh_member_install_count++; | ||
| } | ||
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| if (!m_fgNhgOrch->validNextHopInNextHopGroup(nexthop)) | ||
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@@ -484,7 +556,22 @@ bool RouteOrch::invalidnexthopinNextHopGroup(const NextHopKey &nexthop, uint32_t | |
| return parseHandleSaiStatusFailure(handle_status); | ||
| } | ||
| } | ||
| if (nhopgroup->second.nh_member_install_count) | ||
| { | ||
| nhopgroup->second.nh_member_install_count--; | ||
| } | ||
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| if (nhopgroup->second.nh_member_install_count == 0 && nhopgroup->second.eligible_for_default_route_nh_swap && !nhopgroup->second.is_default_route_nh_swap) | ||
| { | ||
| if(nexthop.ip_address.isV4()) | ||
|
There was a problem hiding this comment. if at this time the default route from bgp is not present. will the There was a problem hiding this comment. @arlakshm : if no default route than existing behavior will happen where nexthop group will not have any members which will cause drop as expected. |
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| { | ||
| addDefaultRouteNexthopsInNextHopGroup(nhopgroup->second, v4_active_default_route_nhops); | ||
| } | ||
| else | ||
| { | ||
| addDefaultRouteNexthopsInNextHopGroup(nhopgroup->second, v6_active_default_route_nhops); | ||
| } | ||
| } | ||
| ++count; | ||
| gCrmOrch->decCrmResUsedCounter(CrmResourceType::CRM_NEXTHOP_GROUP_MEMBER); | ||
| } | ||
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@@ -632,6 +719,7 @@ void RouteOrch::doTask(Consumer& consumer) | |
| string srv6_segments; | ||
| string srv6_source; | ||
| bool srv6_nh = false; | ||
| bool fallback_to_default_route = false; | ||
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| for (auto i : kfvFieldsValues(t)) | ||
| { | ||
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@@ -673,6 +761,10 @@ void RouteOrch::doTask(Consumer& consumer) | |
| { | ||
| ctx.protocol = fvValue(i); | ||
| } | ||
| if (fvField(i) == "fallback_to_default_route") | ||
|
There was a problem hiding this comment. it is being done here: #3353 |
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| { | ||
| fallback_to_default_route = fvValue(i) == "true"; | ||
| } | ||
| } | ||
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| /* | ||
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@@ -687,6 +779,7 @@ void RouteOrch::doTask(Consumer& consumer) | |
| } | ||
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| ctx.nhg_index = nhg_index; | ||
| ctx.fallback_to_default_route = fallback_to_default_route; | ||
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| /* | ||
| * If the nexthop_group is empty, create the next hop group key | ||
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@@ -975,6 +1068,8 @@ void RouteOrch::doTask(Consumer& consumer) | |
| // Go through the bulker results | ||
| auto it_prev = consumer.m_toSync.begin(); | ||
| m_bulkNhgReducedRefCnt.clear(); | ||
| NextHopGroupKey v4_default_nhg_key; | ||
| NextHopGroupKey v6_default_nhg_key; | ||
| while (it_prev != it) | ||
| { | ||
| KeyOpFieldsValuesTuple t = it_prev->second; | ||
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@@ -1032,6 +1127,18 @@ void RouteOrch::doTask(Consumer& consumer) | |
| it_prev = consumer.m_toSync.erase(it_prev); | ||
| else | ||
| it_prev++; | ||
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| if (ip_prefix.isDefaultRoute() && vrf_id == gVirtualRouterId) | ||
| { | ||
| if (ip_prefix.isV4()) | ||
|
Comment on lines
+1132
to
+1133
There was a problem hiding this comment. nit: indentation #Resolved |
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| { | ||
| v4_default_nhg_key = getSyncdRouteNhgKey(gVirtualRouterId, ip_prefix); | ||
| } | ||
| else | ||
| { | ||
| v6_default_nhg_key = getSyncdRouteNhgKey(gVirtualRouterId, ip_prefix); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| else if (op == DEL_COMMAND) | ||
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@@ -1067,9 +1174,23 @@ void RouteOrch::doTask(Consumer& consumer) | |
| } | ||
| else if (m_syncdNextHopGroups[it_nhg.first].ref_count == 0) | ||
| { | ||
| // Pass the flag to indicate if the NextHop Group as Default Route NH Members as swapped. | ||
| removeNextHopGroup(it_nhg.first, m_syncdNextHopGroups[it_nhg.first].is_default_route_nh_swap); | ||
| } | ||
| } | ||
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| if (!(v4_default_nhg_key.getSize()) && !(v6_default_nhg_key.getSize())) | ||
|
There was a problem hiding this comment. please add |
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| { | ||
| return; | ||
| } | ||
| if (v4_default_nhg_key.getSize()) | ||
| { | ||
| updateDefaultRouteSwapSet(v4_default_nhg_key, v4_active_default_route_nhops); | ||
| } | ||
| if (v6_default_nhg_key.getSize()) | ||
| { | ||
| updateDefaultRouteSwapSet(v6_default_nhg_key, v6_active_default_route_nhops); | ||
| } | ||
| } | ||
| } | ||
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@@ -1364,6 +1485,7 @@ bool RouteOrch::addNextHopGroup(const NextHopGroupKey &nexthops) | |
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| NextHopGroupEntry next_hop_group_entry; | ||
| next_hop_group_entry.next_hop_group_id = next_hop_group_id; | ||
| next_hop_group_entry.nh_member_install_count = 0; | ||
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| size_t npid_count = next_hop_ids.size(); | ||
| vector<sai_object_id_t> nhgm_ids(npid_count); | ||
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@@ -1434,6 +1556,7 @@ bool RouteOrch::addNextHopGroup(const NextHopGroupKey &nexthops) | |
| { | ||
| next_hop_group_entry.nhopgroup_members[nhopgroup_members_set.find(nhid)->second].next_hop_id = nhgm_id; | ||
| next_hop_group_entry.nhopgroup_members[nhopgroup_members_set.find(nhid)->second].seq_id = ((uint32_t)i) + 1; | ||
| next_hop_group_entry.nh_member_install_count++; | ||
| } | ||
| } | ||
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@@ -1451,7 +1574,7 @@ bool RouteOrch::addNextHopGroup(const NextHopGroupKey &nexthops) | |
| return true; | ||
| } | ||
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| bool RouteOrch::removeNextHopGroup(const NextHopGroupKey &nexthops, const bool is_default_route_nh_swap) | ||
| { | ||
| SWSS_LOG_ENTER(); | ||
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@@ -1472,10 +1595,10 @@ bool RouteOrch::removeNextHopGroup(const NextHopGroupKey &nexthops) | |
| SWSS_LOG_NOTICE("Delete next hop group %s", nexthops.to_string().c_str()); | ||
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| vector<sai_object_id_t> next_hop_ids; | ||
| auto& nhgm = is_default_route_nh_swap ? next_hop_group_entry->second.default_route_nhopgroup_members : next_hop_group_entry->second.nhopgroup_members; | ||
| for (auto nhop = nhgm.begin(); nhop != nhgm.end();) | ||
| { | ||
| if (m_neighOrch->isNextHopFlagSet(nhop->first, NHFLAGS_IFDOWN) && (!is_default_route_nh_swap)) | ||
| { | ||
| SWSS_LOG_WARN("NHFLAGS_IFDOWN set for next hop group member %s with next_hop_id %" PRIx64, | ||
| nhop->first.to_string().c_str(), nhop->second.next_hop_id); | ||
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@@ -1566,6 +1689,16 @@ bool RouteOrch::removeNextHopGroup(const NextHopGroupKey &nexthops) | |
| } | ||
| } | ||
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| // Decrement Nexthop Reference Count for Default Route NH Member used as swapped | ||
| if (is_default_route_nh_swap) | ||
| { | ||
| auto& nhgm = next_hop_group_entry->second.default_route_nhopgroup_members; | ||
| for (auto nhop = nhgm.begin(); nhop != nhgm.end(); ++nhop) | ||
| { | ||
| m_neighOrch->decreaseNextHopRefCount(nhop->first); | ||
| } | ||
| } | ||
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| m_syncdNextHopGroups.erase(nexthops); | ||
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| return true; | ||
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@@ -1718,6 +1851,11 @@ void RouteOrch::addTempRoute(RouteBulkContext& ctx, const NextHopGroupKey &nextH | |
| (*it).to_string().c_str(), ipPrefix.to_string().c_str()); | ||
| it = next_hop_set.erase(it); | ||
| } | ||
| else if(m_neighOrch->isNextHopFlagSet(*it, NHFLAGS_IFDOWN)) | ||
| { | ||
| SWSS_LOG_INFO("Interface down for NH %s, skip this NH", (*it).to_string().c_str()); | ||
| it = next_hop_set.erase(it); | ||
| } | ||
| else | ||
| it++; | ||
| } | ||
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@@ -1951,6 +2089,11 @@ bool RouteOrch::addRoute(RouteBulkContext& ctx, const NextHopGroupKey &nextHops) | |
| /* Return false since the original route is not successfully added */ | ||
| return false; | ||
| } | ||
| else | ||
| { | ||
| m_syncdNextHopGroups[nextHops].eligible_for_default_route_nh_swap = ctx.fallback_to_default_route; | ||
| m_syncdNextHopGroups[nextHops].is_default_route_nh_swap = false; | ||
| } | ||
| } | ||
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| next_hop_id = m_syncdNextHopGroups[nextHops].next_hop_group_id; | ||
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@@ -2506,6 +2649,15 @@ bool RouteOrch::removeRoutePost(const RouteBulkContext& ctx) | |
| updateDefRouteState(ipPrefix.to_string()); | ||
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| SWSS_LOG_INFO("Set route %s next hop ID to NULL", ipPrefix.to_string().c_str()); | ||
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| if (ipPrefix.isV4()) | ||
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| { | ||
| v4_active_default_route_nhops.clear(); | ||
| } | ||
| else | ||
| { | ||
| v6_active_default_route_nhops.clear(); | ||
| } | ||
| } | ||
| else | ||
| { | ||
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fix indentation