739structnet *net)740{741conststructtcphdr *th =tcp_hdr(skb);742743if(net->ipv4.sysctl_tcp_ecn && th->ece && th->cwr && //服务端也配置了ECN,同时SYN报文中函授ECE和CWR744INET_ECN_is_not_ect(TCP_SKB_CB(skb)->ip_dsfield))745inet_rsk(req)->ecn_ok =1; //套接字设置支持...
226 case INET_ECN_NOT_ECT: 227 /* Funny extension: if ECT is not set on a segment, 228 * and we already seen ECT on a previous segment, 229 * it is probably a retransmit. 230 */ 231 if (tp->ecn_flags & TCP_ECN_SEEN) 232 tcp_enter_quickack_mode((struct sock *)tp); 233 ...
0 0 Not-ECT (Not ECN Capable Transport) 0 1 ECT(1) (ECN Capable Transport (1)) 1 0 ECT(0) (ECN Capable Transport(0)) 1 1 CE (Congestion Experienced) 2 bits = 4 ECN Codepoints ECT: ECN Capable Transport CE: Congestion Experienced ...
See [RFC3168] for the definition of the ECT(0) and ECT(1) marks. ECN-CE: ECN Congestion Experienced mark (see [RFC3168]). ECN-Capable Packets: Packets with ECN mark set to either ECT(0), ECT(1), or ECN-CE. Not-ECT packets: Packets that are not sent by an ECN-capable ...
String()).To(Equal("Not-ECT")) Expect(ECT0.String()).To(Equal("ECT(0)")) Expect(ECT1.String()).To(Equal("ECT(1)")) 2 changes: 2 additions & 0 deletions 2 packet_handler_map.go Original file line numberDiff line numberDiff line change @@ -21,6 +21,8 @@ type conn...
对于使用ECN的TCP连接,需要在数据包的IP包头上设置ECT位。当TCP连接中发送端发送的数据包 仅需要一个ECT位时,应该使用ECT(0)。如果发送端接收到了一个带有ECE的ACK包(也就是说,这 个ACK包带有设置在TCP头上的ECE标记),那么发送端就知道该包在网络中从发送端到接收端的途中 ...
On the Firefox side we can then track metrics like ECT-0 / ECN-CE ratio in a Histogram on connection closing. Before I tackle this, was it deliberately not done in#1678@larseggert? Any objections? Would allow us to measurehttps://bugzilla.mozilla.org/show_bug.cgi?id=1902065....
(that is, the ECT bit is set to 1 and the CE bit is set to 0, or the ECT bit is set to 0 and the CE bit is set to 1)--and the WRED algorithm determines that the packet should have been dropped based on the drop probability--the ECT and CE bits for the packet are changed...
(that is, the ECT bit is set to 1 and the CE bit is set to 0, or the ECT bit is set to 0 and the CE bit is set to 1)--and the WRED algorithm determines that the packet should have been dropped based on the drop probability--the ECT and CE bits for the packet are changed...
The motivation for the ECT bit. The need for the ECT bit is motivated by the fact that ECN will be deployed incrementally in an Internet where some transport protocols and routers understand ECN and some do not. With the ECT bit, the router can drop packets from flows that are not ECN-...