More than 533 commits since the 18.04 release.

Features

Infrastructure

DPDK 18.02.1
- Complete rework of the dpdk-input node
- Display rx/tx burst function name in "show hardware detail"
- Improve buffer alloc perfomance
  - This is ~50% improvement in buffer alloc performance. For a 256 buffer allocation, it was ~10 clocks/buffer, now is < 5 clocks.
- Add per-numa page allocation info to 'show memory'
- Vectorized bihash_{48,40,24,16}_8 key compare
  - bihash_48_8 case:
    - Scalar code: 6 clocks
    - SSE4.2 code: 3 clocks
    - AVX2 code: 2.27 clocks
    - AVX512 code: 1.5 clocks
- Pollable Stats
  - Stats are now available to a client in a shared memory segment and in the form of a directory, allowing very high performance polling of stats without directly querying VPP.

VNET & Plugins

IGMP improvements
- Enable/Disable an interface for IGMP
- improve logging
- refactor common code
- no orphaned timers
- IGMP state changes in main thread only
- Large groups split over multiple state-change reports
- SSM range configuration API.
- more tests
IP: vectorized IP checksum
VXLAN : HW offload RX flow
Rework kube-proxy into LB plugin and add NATA66
NAT:
- Code refactor
- Syslog
- Multiple outside interfaces
- Endpoint dependent filtering and mapping
ACL:
- Tuple Merge algorithm cleanup and integration
- Processing pipeline optimizations
- Refactoring
Experimental AVF driver

Host stack

Session: performance improvements, add support for connectionless transports, datagram reception and transmission
TCP: congestion control improvements and overall fixes
UDP: datagram mode
TLS async support

Known issues

For the full list of issues please refer to fd.io JIRA.

Issues fixed

For the full list of fixed issues please refer to:

fd.io JIRA
git commit log

API changes

Description of results:

Definition changed: indicates that the API file was modified between releases.
Only in image: indicates the API is new for this release.
Only in file: indicates the API has been removed in this release.
```
                  Message Name                         Result
```
abf_itf_attach_add_del definition changed abf_itf_attach_details only in image abf_itf_attach_dump only in image abf_plugin_get_version definition changed abf_policy_add_del definition changed abf_policy_details only in image abf_policy_dump only in image af_packet_details only in image af_packet_dump only in image avf_create definition changed avf_delete definition changed bind_sock_reply definition changed bind_uri_reply definition changed dhcp6_client_enable_disable definition changed dhcp6_clients_enable_disable definition changed dhcp6_duid_ll_set definition changed dhcp6_pd_client_enable_disable definition changed dhcp6_pd_reply_event only in image dhcp6_pd_send_client_message definition changed dhcp6_reply_event only in image dhcp6_send_client_message definition changed dhcp_client_config definition changed dhcp_client_details only in image dhcp_client_dump only in image dhcp_compl_event definition changed dslite_address_details only in image dslite_address_dump only in image gbp_endpoint_group_add_del definition changed gbp_endpoint_group_details only in image gbp_endpoint_group_dump only in image gbp_recirc_add_del definition changed gbp_recirc_details only in image gbp_recirc_dump only in image gbp_subnet_add_del definition changed gbp_subnet_details only in image gbp_subnet_dump only in image hw_interface_set_mtu definition changed igmp_details definition changed igmp_dump definition changed igmp_enable_disable definition changed igmp_event definition changed igmp_group_prefix_details only in image igmp_group_prefix_dump only in image igmp_group_prefix_set definition changed igmp_listen definition changed ikev2_profile_set_auth definition changed ikev2_profile_set_id definition changed ip6_add_del_address_using_prefix definition changed ip_mroute_add_del definition changed ip_probe_neighbor definition changed ip_scan_neighbor_enable_disable definition changed ip_unnumbered_details only in image ip_unnumbered_dump only in image ipip_6rd_add_tunnel definition changed ipip_add_tunnel definition changed ipip_tunnel_details definition changed ipsec_sa_details definition changed ipsec_sad_add_del_entry definition changed ipsec_tunnel_if_add_del definition changed kp_add_del_pod definition changed kp_add_del_vip definition changed kp_conf definition changed lb_add_del_vip definition changed mactime_add_del definition changed mactime_enable definition changed memclnt_create definition changed memclnt_create_reply definition changed memfd_segment_create definition changed nat44_add_del_lb_static_mapping definition changed nat44_add_del_static_mapping definition changed nat44_del_session definition changed nat44_lb_static_mapping_details definition changed nat44_static_mapping_details definition changed nat44_user_session_details definition changed pipe_create definition changed pipe_delete definition changed pipe_details only in image pipe_dump only in image pot_profile_activate definition changed pot_profile_add definition changed pot_profile_del definition changed proxy_arp_add_del definition changed proxy_arp_details only in image proxy_arp_dump only in image proxy_arp_intfc_details only in image proxy_arp_intfc_dump only in image sock_init_shm_reply definition changed sockclnt_create definition changed sockclnt_create_reply definition changed sr_localsid_add_del definition changed sr_localsids_details definition changed sr_policies_details only in image sr_policies_dump only in image sr_policy_add definition changed sr_policy_del definition changed sr_policy_mod definition changed sr_steering_pol_details only in image sr_steering_pol_dump only in image sw_interface_details definition changed sw_interface_set_mtu definition changed tap_create_v2 definition changed vnet_bier_neighbor_counters only in image vnet_get_summary_stats_reply definition changed vxlan_offload_rx definition changed want_bier_neighbor_stats definition changed want_dhcp6_pd_reply_events definition changed want_dhcp6_reply_events definition changed Found 107 api message signature differences

Patches that changed API definitions

`src/plugins/ioam/lib-pot/pot.api`
e9fcf23	Fix some build warnings about "Old Style VLA"

`src/plugins/gbp/gbp.api`
25b0494	GBP V2

`src/plugins/map/map.api`
381e9a9	MAP: Move MAP-E/T to a plugin.

`src/plugins/igmp/igmp.api`
947ea62	IGMP improvements

`src/plugins/lb/lb.api`
d92a0b5	Rework kube-proxy into LB plugin

`src/plugins/nat/nat.api`
70a26ac	NAT44: nat44_del_session and nat44_user_session_details API update (VPP-1271)
ebdf190	NAT44: TCP connection close detection (VPP-1266)
1e5c07d	Add special Twice-NAT feature (VPP-1221)
16aa7f8	DSLite: Implement new API call DSLITE_ADDRESS_DUMP.

`src/plugins/avf/avf.api`
258a189	avf: api fix
6c9b964	avf: binary API and configurable RX/TX queue size

`src/plugins/mactime/mactime.api`
7055e26	Driver level time-based src mac filter

`src/plugins/abf/abf.api`
669d07d	ACL based forwarding

`src/vlibmemory/memclnt.api`
dab732a	VPP-1335 vapi crash when memclnt_keepalive received
7895872	Remove the historical memfd api segment bootstrap

`src/vpp/stats/stats.api`
a21a367	VPP-1324 SIGSEGV vl_msg_api_handler_with_vm_node()
586479a	BIER neighbor stats
e906aac	STATS: Separate socket for fd exchange.
048a4e5	export counters in a memfd segment

`src/vnet/interface.api`
d723161	MTU: Software interface / Per-protocol MTU support
fe7d4a2	Revert "MTU: Setting of MTU on software interface (instead of hardware interface)"
70083ee	MTU: Setting of MTU on software interface (instead of hardware interface)

`src/vnet/ipfix-export/ipfix_export.api`
a9855ef	Flow: Rename IPFIX exporter.

`src/vnet/dhcp/dhcp6_pd_client_cp.api`
81119e8	Implement DHCPv6 PD client (VPP-718, VPP-1050)

`src/vnet/dhcp/dhcp.api`
dd3b8f7	Implement DHCPv6 IA NA client (VPP-1094)
d9778c2	Update DHCPv6 DUID code and fix coverity warnings
81119e8	Implement DHCPv6 PD client (VPP-718, VPP-1050)
daff178	DHCP Client Dump

`src/vnet/dhcp/dhcp6_ia_na_client_cp.api`
dd3b8f7	Implement DHCPv6 IA NA client (VPP-1094)

`src/vnet/ip/ip.api`
947ea62	IGMP improvements
7eaaf74	proxy_arp: remove unused is_add
0053de6	ARP proxy dumps
9e2f915	IP unnumbered dump
7f358b3	Periodic scan and probe of IP neighbors to maintain neighbor pools
e821ab1	IP mcast: allow unicast address as a next-hop
c7b4304	Implement ip_probe_neighbor API

`src/vnet/ip/ip_types.api`
947ea62	IGMP improvements
2c2feab	VPPAPIGEN: Add union and enum support and IP4/IP6 address type.

`src/vnet/devices/af_packet/af_packet.api`
04e0bb2	af_packet: Add support for dump interfaces

`src/vnet/devices/tap/tapv2.api`
d600ffe	Update tapv2 documentation
0b06111	VPP-1305: Add support for tags

`src/vnet/devices/pipe/pipe.api`
ee8b973	VOM: support for pipes
17ff3c1	Pipes

`src/vnet/ipip/ipip.api`
d57f636	VPP-1277: IPIP - Copy TOS/TC from inner packet to outer.

`src/vnet/session/session.api`
7fb0fe1	udp/session: refactor to support dgram mode

`src/vnet/ipsec/ipsec.api`
4b089f2	ipsec: support UDP encap/decap for NAT traversal
e9fcf23	Fix some build warnings about "Old Style VLA"
8e1039a	Allow an IPsec tunnel interface to be renumbered

`src/vnet/vxlan/vxlan.api`
af86a48	vxlan:offload RX flow

`src/vnet/srv6/sr.api`
3337bd2	Fixed bugs in SRv6 API
e9fcf23	Fix some build warnings about "Old Style VLA"