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* [newlib-cygwin] tcp: SACK Lost Retransmission Detection (LRD)
@ 2022-07-11 11:54 Sebastian Huber
0 siblings, 0 replies; only message in thread
From: Sebastian Huber @ 2022-07-11 11:54 UTC (permalink / raw)
To: newlib-cvs
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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