Bug 498042

=Comment: #0=================================================
Hans-Georg Markgraf <mgrf.com> - 
1. Feature Overview:
Feature Id:		 [201885]
a. Name of Feature:		 AF_IUCV SOCK_SEQPACKET support
b. Feature Description
Offer AF_IUCV datagram stream-oriented sockets in addition to the existing AF_IUCV byte
stream-oriented sockets man 2 socket: SOCK_SEQPACKET Provides a sequenced, reliable, two-way
connection-based data transmission path for datagrams of fixed maximum length; a consumer is
required to read an entire packet with each input system call. 

2. Feature Details:
Sponsor:		 zSeries
Architectures:	 s390x

Arch Specificity: Purely Arch Specific Code
Affects Core Kernel: Yes
Delivery Mechanism: Direct from community
Category:		 Networking
Request Type:		 Kernel - Enhancement from IBM
d. Upstream Acceptance:		 In Progress
Sponsor Priority		 1
f. Severity: High
IBM Confidential:		 no
Code Contribution:		 IBM code
g. Component Version Target:		 K 2.6.31

3. Business Case
IUCV is an important z/VM communication facility. The Linux AF-IUCV protocol support facilitates
exploitation of IUCV-communication through a socket interface. Enhancing the existing byte
stream-oriented AF-IUCV protocol support in Linux (SOCK_STREAM) to support also fixed max. length
datagram-oriented sockets (SOCK_SEQPACKET) enables applications to benefit from Linux AF_IUCV
sockets, if their socket data to be transferred cannot be fragmented. One such future application in
z/VSE is already identified. In general, this feature improves the close collaboration between Linux
on System z and z/VM in the networking area. 

4. Primary contact at Red Hat: 
John Jarvis
jjarvis

5. Primary contacts at Partner:
Project Management Contact:
Hans-Georg Markgraf, mgrf.com, Boeblingen 49-7031-16-3978

Technical contact(s):
Gonzalo Muelas Serrano, gmuelas.com

IBM Manager:
Thomas Schwarz, t.schwarz.com
=Comment: #1=================================================
Hans Joachim Picht <hans.ibm.com> - 

rhel6-af-iucv-datagram.diff

added the patch