remove pinger args and add STT tunnel deprecated warning (#328)

Signed-off-by: Mengxin Liu <[email protected]>

Author: oilbeater

docs/reference/kube-ovn-pinger-args.en.md

@@ -33,6 +33,10 @@ and consumes more CPU resources when handling large packets.
 
 ## STT
 
+!!! warning
+
+    Open vSwitch upstream removed support for STT tunnels in version 3.6 [commit](https://github.com/openvswitch/ovs/commit/19b89416203f3b3b212fb01c30c81ea1b77624eb){: target="_blank" }. This solution will no longer receive upstream support in the future.
+
 The `STT` protocol is an early tunneling protocol supported by the OVN that uses TCP-like headers to
 take advantage of the TCP offload capabilities common to modern NICs and significantly increase TCP throughput.
 The protocol also has a long header to support full OVN capabilities and large-scale datapaths.

docs/reference/kube-ovn-pinger-args.md

@@ -29,6 +29,10 @@ CPU 资源。
 
 ## STT
 
+!!! warning
+
+    OpenVswitch 上游在 3.6 版本[移除对 STT 类型 Tunnel 的支持](https://github.com/openvswitch/ovs/commit/19b89416203f3b3b212fb01c30c81ea1b77624eb){: target="_blank" }，该方案未来将无法得到上游支持。
+
 `STT` 协议为 OVN 较早支持的隧道协议，该协议使用类 TCP 的头部，可以充分利用现代网卡通用的 TCP 卸载能力，大幅提升 TCP
 的吞吐量。同时该协议头部较长可支持完整的 OVN 能力和大规模的 datapath。
 

docs/reference/tunnel-protocol.en.md

@@ -86,7 +86,6 @@ nav:
       - 功能成熟度: "reference/feature-stage.md"
       - Underlay 流量拓扑: "reference/underlay-topology.md"
       - Iptables 规则: "reference/iptables-rules.md"
-      - kube-ovn-pinger 参数描述: "reference/kube-ovn-pinger-args.md"
       - 开发和贡献指导: "reference/dev-env.md"
       - 对上游 OVS/OVN 修改: "reference/ovs-ovn-customized.md"
       - 隧道协议说明: "reference/tunnel-protocol.md"
@@ -236,7 +235,6 @@ plugins:
             功能成熟度: Feature Stage
             配置原生 Prometheus: Config Native Prometheus
             Iptables 规则: Iptables Rules
-            kube-ovn-pinger 参数描述: kube-ovn-pinger args description
             内部负载均衡: Internal Load Balancer
             内部 DNS: Internal DNS
             Kube-OVN 接口规范: Kube-OVN API Reference