Patch-ID# 103582-10
Keywords: telnet ftp single user tcp NDD tcp_bind web rtt_dx RTO FIN ack TLI
Synopsis: SunOS 5.5.1: /kernel/drv/tcp patch
Date: Apr/01/97

Solaris Release: 2.5.1

SunOS Release: 5.5.1

Unbundled Product:

Unbundled Release:

Xref: This patch available for x86 as patch 103581
Xref: This patch available for PPC as patch 103583

Topic: SunOS 5.5.1: /kernel/drv/tcp patch

BugId's fixed with this patch: 1206850 1233827 1248840 1249829 1250411 1259524 1261245 4011648 4015495 4017242 4022642 4034353 4034355

Changes incorporated in this version: 4034353 4034355

Relevant Architectures: sparc

Patches accumulated and obsoleted by this patch:

Patches which conflict with this patch: iss_sparc-01 (or higher revs)

Patches required with this patch:

Obsoleted by:

Files included with this patch:

/kernel/drv/tcp

Problem Description:

4034355 Solaris ignores KEEPALIVE probes without data
4034353 TCP/IP sometimes forgets PSH after sending URG.

(from 103582-09)

1250411 rcp receives "random" connection reset by peer

(from 103582-08)

4017242 PDB-System crash with BAD TRAP

(from 103582-07)

4015495 connect deadlock when ephemeral port is same as dest port

(from 103582-06)

4022642 TLI application causes Data Fault system panics

(from 103582-05)

4011648 Fix for bug 1248840 introduces performance degradation in rsh

(from 103582-04)

1259524 deadbeef panic in tcp_xmit_mp()

(from 103582-03)

1261245 window probes can cause ack wars

(from 103582-02)

1248840 TCP socket can't handle FIN pkt from client surely (deadlock)

	Fixed code to avoid system panic due to deallocated tcp structure.

(from 103582-01)

1249829 connection times out if remote only sends zero-windows

	A connection that sends a zero window for more than
        tcp_ip_abort_interval interval will have the connection terminated.

1248840 TCP socket can't handle FIN pkt from client surely (deadlock)
1233827 tcp retransmits too much for short  connections as seen at web sites
1206850 Solaris 2.4, telnet/ftp error in single user mode.

Patch Installation Instructions:
--------------------------------
Refer to the Install.info file within the patch for instructions on
using the generic 'installpatch' and 'backoutpatch' scripts provided
with each patch. Any other special or non-generic installation
instructions should be described below.

Special Install Instructions:
-----------------------------

If the reason to install this patch is to fix bugid 1233827
(tcp retransmits too much for short connections as seen at 
web sites), the 2.5.1 ip patch (103630-01 or higher) is also
required.