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From: Sebastian Huber <sh@sourceware.org> To: newlib-cvs@sourceware.org Subject: [newlib-cygwin] tcp: SACK Lost Retransmission Detection (LRD) Date: Mon, 11 Jul 2022 11:54:35 +0000 (GMT) [thread overview] Message-ID: <20220711115435.22C63385415A@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=d4971b646486da73e4213010115e8aa0573e389a commit d4971b646486da73e4213010115e8aa0573e389a Author: Richard Scheffenegger <rscheff@FreeBSD.org> Date: Mon May 10 18:47:47 2021 +0200 tcp: SACK Lost Retransmission Detection (LRD) Recover from excessive losses without reverting to a retransmission timeout (RTO). Disabled by default, enable with sysctl net.inet.tcp.do_lrd=1 Reviewed By: #transport, rrs, tuexen, #manpages Sponsored by: Netapp, Inc. Differential Revision: https://reviews.freebsd.org/D28931 Diff: --- newlib/libc/sys/rtems/include/netinet/tcp.h | 1 + 1 file changed, 1 insertion(+) diff --git a/newlib/libc/sys/rtems/include/netinet/tcp.h b/newlib/libc/sys/rtems/include/netinet/tcp.h index 50f0811a6..7ba99df51 100644 --- a/newlib/libc/sys/rtems/include/netinet/tcp.h +++ b/newlib/libc/sys/rtems/include/netinet/tcp.h @@ -199,6 +199,7 @@ struct tcphdr { #define TCP_PROC_ACCOUNTING 76 /* Do accounting on tcp cpu usage and counts */ #define TCP_USE_CMP_ACKS 77 /* The transport can handle the Compressed mbuf acks */ #define TCP_PERF_INFO 78 /* retrieve accounting counters */ +#define TCP_LRD 79 /* toggle Lost Retransmission Detection for A/B testing */ #define TCP_KEEPINIT 128 /* N, time to establish connection */ #define TCP_KEEPIDLE 256 /* L,N,X start keeplives after this period */ #define TCP_KEEPINTVL 512 /* L,N interval between keepalives */
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