-
Notifications
You must be signed in to change notification settings - Fork 94
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Add DASH HA session API design. (#532)
This change is made to add HA session API HLD and P4 changes for SAI API generation. To describe how the HA session API works, the HLD in this change contains: - The key fundamental components that used to form the HA set topology and their SAI API design. - How we could implement HA in DASH behavior model and how each components works with each other. - The life of the packet for inline flow sync. - The SAI API call sequence of several typical HA related work flows. The change also contains the P4 code that generates the SAI APIs.
- Loading branch information
Showing
30 changed files
with
913 additions
and
10 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,133 @@ | ||
| #ifndef _DASH_STAGE_HA_P4_ | ||
| #define _DASH_STAGE_HA_P4_ | ||
|
|
||
| control ha_stage(inout headers_t hdr, | ||
| inout metadata_t meta) | ||
| { | ||
| // | ||
| // ENI-level flow operation counters: | ||
| // | ||
| DEFINE_HIT_COUNTER(flow_created_counter, MAX_ENI, name="flow_created", attr_type="stats", action_names="set_eni_attrs", order=1) | ||
| DEFINE_HIT_COUNTER(flow_create_failed_counter, MAX_ENI, name="flow_create_failed", attr_type="stats", action_names="set_eni_attrs", order=1) | ||
| DEFINE_HIT_COUNTER(flow_updated_counter, MAX_ENI, name="flow_updated", attr_type="stats", action_names="set_eni_attrs", order=1) | ||
| DEFINE_HIT_COUNTER(flow_update_failed_counter, MAX_ENI, name="flow_update_failed", attr_type="stats", action_names="set_eni_attrs", order=1) | ||
| DEFINE_HIT_COUNTER(flow_deleted_counter, MAX_ENI, name="flow_deleted", attr_type="stats", action_names="set_eni_attrs", order=1) | ||
| DEFINE_HIT_COUNTER(flow_delete_failed_counter, MAX_ENI, name="flow_delete_failed", attr_type="stats", action_names="set_eni_attrs", order=1) | ||
| DEFINE_HIT_COUNTER(flow_aged_counter, MAX_ENI, name="flow_aged", attr_type="stats", action_names="set_eni_attrs", order=1) | ||
|
|
||
| // | ||
| // ENI-level flow sync packet counters: | ||
| // | ||
| DEFINE_COUNTER(inline_sync_packet_rx_counter, MAX_ENI, name="inline_sync_packet_rx", attr_type="stats", action_names="set_eni_attrs", order=2) | ||
| DEFINE_COUNTER(inline_sync_packet_tx_counter, MAX_ENI, name="inline_sync_packet_tx", attr_type="stats", action_names="set_eni_attrs", order=2) | ||
| DEFINE_COUNTER(timed_sync_packet_rx_counter, MAX_ENI, name="timed_sync_packet_rx", attr_type="stats", action_names="set_eni_attrs", order=2) | ||
| DEFINE_COUNTER(timed_sync_packet_tx_counter, MAX_ENI, name="timed_sync_packet_tx", attr_type="stats", action_names="set_eni_attrs", order=2) | ||
|
|
||
| // | ||
| // ENI-level flow sync request counters: | ||
| // - Depends on implementations, the flow sync request could be batched, hence they need to tracked separately. | ||
| // - The counters are defined as combination of following things: | ||
| // - 3 flow sync operations: create, update, delete. | ||
| // - 2 ways of sync: Inline sync and timed sync. | ||
| // - Request result: succeeded, failed (unexpected) and ignored (expected and ok to ignore, e.g., more packets arrives before flow sync is acked). | ||
| // | ||
| #define DEFINE_ENI_FLOW_SYNC_COUNTERS(counter_name) \ | ||
| DEFINE_HIT_COUNTER(inline_ ## counter_name ## _req_sent_counter, MAX_ENI, name=PP_STR(inline_ ## counter_name ## _req_sent), attr_type="stats", action_names="set_eni_attrs", order=2) \ | ||
| DEFINE_HIT_COUNTER(inline_ ## counter_name ## _req_recv_counter, MAX_ENI, name=PP_STR(inline_ ## counter_name ## _req_recv), attr_type="stats", action_names="set_eni_attrs", order=2) \ | ||
| DEFINE_HIT_COUNTER(inline_ ## counter_name ## _req_failed_counter, MAX_ENI, name=PP_STR(inline_ ## counter_name ## _req_failed), attr_type="stats", action_names="set_eni_attrs", order=2) \ | ||
| DEFINE_HIT_COUNTER(inline_ ## counter_name ## _req_ignored_counter, MAX_ENI, name=PP_STR(inline_ ## counter_name ## _req_failed), attr_type="stats", action_names="set_eni_attrs", order=2) \ | ||
| DEFINE_HIT_COUNTER(inline_ ## counter_name ## _ack_recv_counter, MAX_ENI, name=PP_STR(inline_ ## counter_name ## _ack_recv), attr_type="stats", action_names="set_eni_attrs", order=2) \ | ||
| DEFINE_HIT_COUNTER(inline_ ## counter_name ## _ack_failed_counter, MAX_ENI, name=PP_STR(inline_ ## counter_name ## _ack_failed_recv), attr_type="stats", action_names="set_eni_attrs", order=2) \ | ||
| DEFINE_HIT_COUNTER(inline_ ## counter_name ## _ack_ignored_counter, MAX_ENI, name=PP_STR(inline_ ## counter_name ## _ack_ignored_recv), attr_type="stats", action_names="set_eni_attrs", order=2) \ | ||
| \ | ||
| DEFINE_HIT_COUNTER(timed_ ## counter_name ## _req_sent_counter, MAX_ENI, name=PP_STR(timed_ ## counter_name ## _req_sent), attr_type="stats", action_names="set_eni_attrs", order=2) \ | ||
| DEFINE_HIT_COUNTER(timed_ ## counter_name ## _req_recv_counter, MAX_ENI, name=PP_STR(timed_ ## counter_name ## _req_recv), attr_type="stats", action_names="set_eni_attrs", order=2) \ | ||
| DEFINE_HIT_COUNTER(timed_ ## counter_name ## _req_failed_counter, MAX_ENI, name=PP_STR(timed_ ## counter_name ## _req_failed), attr_type="stats", action_names="set_eni_attrs", order=2) \ | ||
| DEFINE_HIT_COUNTER(timed_ ## counter_name ## _req_ignored_counter, MAX_ENI, name=PP_STR(timed_ ## counter_name ## _req_failed), attr_type="stats", action_names="set_eni_attrs", order=2) \ | ||
| DEFINE_HIT_COUNTER(timed_ ## counter_name ## _ack_recv_counter, MAX_ENI, name=PP_STR(timed_ ## counter_name ## _ack_recv), attr_type="stats", action_names="set_eni_attrs", order=2) \ | ||
| DEFINE_HIT_COUNTER(timed_ ## counter_name ## _ack_failed_counter, MAX_ENI, name=PP_STR(timed_ ## counter_name ## _ack_failed_recv), attr_type="stats", action_names="set_eni_attrs", order=2) \ | ||
| DEFINE_HIT_COUNTER(timed_ ## counter_name ## _ack_ignored_counter, MAX_ENI, name=PP_STR(timed_ ## counter_name ## _ack_ignored_recv), attr_type="stats", action_names="set_eni_attrs", order=2) | ||
|
|
||
| DEFINE_ENI_FLOW_SYNC_COUNTERS(flow_create) | ||
| DEFINE_ENI_FLOW_SYNC_COUNTERS(flow_update) | ||
| DEFINE_ENI_FLOW_SYNC_COUNTERS(flow_delete) | ||
|
|
||
| // | ||
| // HA scope: | ||
| // | ||
| action set_ha_scope_attr( | ||
| @SalVal[type="sai_object_id_t"] bit<16> ha_set_id, | ||
| @SaiVal[type="sai_dash_ha_role_t"] dash_ha_role_t dash_ha_role, | ||
| @SaiVal[isreadonly="true"] bit<32> flow_version | ||
| ) { | ||
| meta.ha.ha_set_id = ha_set_id; | ||
| meta.ha.ha_role = dash_ha_role; | ||
| } | ||
|
|
||
| @SaiTable[api = "dash_ha", order=1, isobject="true"] | ||
| table ha_scope { | ||
| key = { | ||
| meta.ha.ha_scope_id : exact; | ||
| } | ||
| actions = { | ||
| set_ha_scope_attr; | ||
| } | ||
| } | ||
|
|
||
| // | ||
| // HA set: | ||
| // | ||
| DEFINE_COUNTER(dp_probe_req_rx, MAX_HA_SET, name="dp_probe_req_rx", attr_type="stats", action_names="set_ha_set_attr") | ||
| DEFINE_COUNTER(dp_probe_req_tx, MAX_HA_SET, name="dp_probe_req_tx", attr_type="stats", action_names="set_ha_set_attr") | ||
| DEFINE_COUNTER(dp_probe_ack_rx, MAX_HA_SET, name="dp_probe_ack_rx", attr_type="stats", action_names="set_ha_set_attr") | ||
| DEFINE_COUNTER(dp_probe_ack_tx, MAX_HA_SET, name="dp_probe_ack_tx", attr_type="stats", action_names="set_ha_set_attr") | ||
| DEFINE_HIT_COUNTER(dp_probe_failed, MAX_HA_SET, name="dp_probe_failed", attr_type="stats", action_names="set_ha_set_attr") | ||
|
|
||
| action set_ha_set_attr( | ||
| bit<1> local_ip_is_v6, | ||
| @SaiVal[type="sai_ip_address_t"] IPv4ORv6Address local_ip, | ||
| bit<1> peer_ip_is_v6, | ||
| @SaiVal[type="sai_ip_address_t"] IPv4ORv6Address peer_ip, | ||
| bit<16> dp_channel_dst_port, | ||
| bit<16> dp_channel_min_src_port, | ||
| bit<16> dp_channel_max_src_port, | ||
| bit<32> dp_channel_probe_interval_ms, | ||
| bit<32> dp_channel_probe_fail_threshold, | ||
| @SaiVal[isreadonly="true"] bit<1> dp_channel_is_alive | ||
| ) { | ||
| meta.ha.peer_ip_is_v6 = peer_ip_is_v6; | ||
| meta.ha.peer_ip = peer_ip; | ||
|
|
||
| meta.ha.dp_channel_dst_port = dp_channel_dst_port; | ||
| meta.ha.dp_channel_src_port_min = dp_channel_min_src_port; | ||
| meta.ha.dp_channel_src_port_max = dp_channel_max_src_port; | ||
| } | ||
|
|
||
| @SaiTable[api = "dash_ha", order=0, isobject="true"] | ||
| table ha_set { | ||
| key = { | ||
| meta.ha.ha_set_id : exact @SaiVal[type="sai_object_id_t"]; | ||
| } | ||
| actions = { | ||
| set_ha_set_attr; | ||
| } | ||
| } | ||
|
|
||
| apply { | ||
| // If HA scope id is not set, then HA is not enabled. | ||
| if (meta.ha.ha_scope_id == 0) { | ||
| return; | ||
| } | ||
| ha_scope.apply(); | ||
|
|
||
| // If HA set id is not set, then HA is not enabled. | ||
| if (meta.ha.ha_set_id == 0) { | ||
| return; | ||
| } | ||
| ha_set.apply(); | ||
|
|
||
| // TODO: HA state machine handling. | ||
| } | ||
| } | ||
|
|
||
| #endif /* _DASH_STAGE_HA_P4_ */ |
Oops, something went wrong.