[newlib-cygwin] This commit updates rack to what is basically

[newlib-cygwin] This commit updates rack to what is basically

[Sebastian Huber]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=693ba4025f83533985d3a6256b10b73acd8ee100

commit 693ba4025f83533985d3a6256b10b73acd8ee100
Author: rrs <rrs@FreeBSD.org>
Date:   Wed Jul 10 20:40:39 2019 +0000

    This commit updates rack to what is basically
    
    being used at NF as well as sets in some of the groundwork for
    committing BBR. The hpts system is updated as well as some other needed
    utilities for the entrance of BBR. This is actually part 1 of 3 more
    needed commits which will finally complete with BBRv1 being added as a
    new tcp stack.
    
    Sponsored by:	Netflix Inc.
    Differential Revision:	https://reviews.freebsd.org/D20834

Diff:
---
 newlib/libc/sys/rtems/include/netinet/tcp.h | 27 ++++++++++++++++++++-------
 1 file changed, 20 insertions(+), 7 deletions(-)

diff --git a/newlib/libc/sys/rtems/include/netinet/tcp.h b/newlib/libc/sys/rtems/include/netinet/tcp.h
index c3ae655..37cf35c 100644
--- a/newlib/libc/sys/rtems/include/netinet/tcp.h
+++ b/newlib/libc/sys/rtems/include/netinet/tcp.h
@@ -201,9 +201,8 @@ struct tcphdr {
 #define TCP_RACK_TLP_THRESH   1063 /* RACK TLP theshold i.e. srtt+(srtt/N) */
 #define TCP_RACK_PKT_DELAY    1064 /* RACK added ms i.e. rack-rtt + reord + N */
 #define TCP_RACK_TLP_INC_VAR  1065 /* Does TLP include rtt variance in t-o */
-#define TCP_RACK_SESS_CWV     1066 /* Enable RFC7611 cwnd validation on sess */
 #define TCP_BBR_IWINTSO	      1067 /* Initial TSO window for BBRs first sends */
-#define TCP_BBR_RECFORCE      1068 /* Enter recovery force out a segment disregard pacer */
+#define TCP_BBR_RECFORCE      1068 /* Enter recovery force out a segment disregard pacer no longer valid */
 #define TCP_BBR_STARTUP_PG    1069 /* Startup pacing gain */
 #define TCP_BBR_DRAIN_PG      1070 /* Drain pacing gain */
 #define TCP_BBR_RWND_IS_APP   1071 /* Rwnd limited is considered app limited */
@@ -211,14 +210,18 @@ struct tcphdr {
 #define TCP_BBR_ONE_RETRAN    1073 /* Is only one segment allowed out during retran */
 #define TCP_BBR_STARTUP_LOSS_EXIT 1074	/* Do we exit a loss during startup if not 20% incr */
 #define TCP_BBR_USE_LOWGAIN   1075 /* lower the gain in PROBE_BW enable */
-#define TCP_BBR_LOWGAIN_THRESH 1076 /* How many cycles do we stay in lowgain */
-#define TCP_BBR_LOWGAIN_HALF  1077 /* Do we halfstep lowgain down */
-#define TCP_BBR_LOWGAIN_FD    1078 /* Do we force a drain when lowgain in place */
+#define TCP_BBR_LOWGAIN_THRESH 1076 /* Unused after 2.3 morphs to TSLIMITS >= 2.3 */
+#define TCP_BBR_TSLIMITS 1076	   /* Do we use experimental Timestamp limiting for our algo */
+#define TCP_BBR_LOWGAIN_HALF  1077 /* Unused after 2.3 */
+#define TCP_BBR_PACE_OH        1077 /* Reused in 4.2 for pacing overhead setting */
+#define TCP_BBR_LOWGAIN_FD    1078 /* Unused after 2.3 */
+#define TCP_BBR_HOLD_TARGET 1078	/* For 4.3 on */
 #define TCP_BBR_USEDEL_RATE   1079 /* Enable use of delivery rate for loss recovery */
 #define TCP_BBR_MIN_RTO       1080 /* Min RTO in milliseconds */
 #define TCP_BBR_MAX_RTO	      1081 /* Max RTO in milliseconds */
 #define TCP_BBR_REC_OVER_HPTS 1082 /* Recovery override htps settings 0/1/3 */
-#define TCP_BBR_UNLIMITED     1083 /* Does BBR, in non-recovery not use cwnd */
+#define TCP_BBR_UNLIMITED     1083 /* Not used before 2.3 and morphs to algorithm >= 2.3 */
+#define TCP_BBR_ALGORITHM     1083 /* What measurement algo does BBR use netflix=0, google=1 */
 #define TCP_BBR_DRAIN_INC_EXTRA 1084 /* Does the 3/4 drain target include the extra gain */
 #define TCP_BBR_STARTUP_EXIT_EPOCH 1085 /* what epoch gets us out of startup */
 #define TCP_BBR_PACE_PER_SEC   1086
@@ -227,17 +230,27 @@ struct tcphdr {
 #define TCP_BBR_PACE_SEG_MIN   1089
 #define TCP_BBR_PACE_CROSS     1090
 #define TCP_RACK_IDLE_REDUCE_HIGH 1092  /* Reduce the highest cwnd seen to IW on idle */
-#define TCP_RACK_IDLE_REDUCE_HIGH 1092  /* Reduce the highest cwnd seen to IW on idle */
 #define TCP_RACK_MIN_PACE      1093 	/* Do we enforce rack min pace time */
 #define TCP_RACK_MIN_PACE_SEG  1094	/* If so what is the seg threshould */
+#define TCP_RACK_GP_INCREASE   1094	/* After 4.1 its the GP increase */
 #define TCP_RACK_TLP_USE       1095
 #define TCP_BBR_ACK_COMP_ALG   1096 	/* Not used */
+#define TCP_BBR_TMR_PACE_OH    1096	/* Recycled in 4.2 */
 #define TCP_BBR_EXTRA_GAIN     1097
 #define TCP_BBR_RACK_RTT_USE   1098	/* what RTT should we use 0, 1, or 2? */
 #define TCP_BBR_RETRAN_WTSO    1099
 #define TCP_DATA_AFTER_CLOSE   1100
 #define TCP_BBR_PROBE_RTT_GAIN 1101
 #define TCP_BBR_PROBE_RTT_LEN  1102
+#define TCP_BBR_SEND_IWND_IN_TSO 1103	/* Do we burst out whole iwin size chunks at start? */
+#define TCP_BBR_USE_RACK_CHEAT 1104	/* Do we use the rack cheat for pacing rxt's */
+#define TCP_BBR_HDWR_PACE      1105	/* Enable/disable hardware pacing */
+#define TCP_BBR_UTTER_MAX_TSO  1106	/* Do we enforce an utter max TSO size */
+#define TCP_BBR_EXTRA_STATE    1107	/* Special exit-persist catch up */
+#define TCP_BBR_FLOOR_MIN_TSO  1108     /* The min tso size */
+#define TCP_BBR_MIN_TOPACEOUT  1109	/* Do we suspend pacing until */
+#define TCP_BBR_TSTMP_RAISES   1110	/* Can a timestamp measurement raise the b/w */
+#define TCP_BBR_POLICER_DETECT 1111	/* Turn on/off google mode policer detection */
 
 
 /* Start of reserved space for third-party user-settable options. */