Update the sockets library code

* Passes conformance and functional tests.
* Builds with GCC 4.4 compiler.

Signed-off by: lpleahy


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12497 6f19259b-4bc3-4df7-8a09-765794883524

StdLib/EfiSocketLib/ReleaseNotes.txt

@@ -0,0 +1,31 @@
+The following issues exist with the EFI Socket Library:
+
+*  Don't run socket applications or the socket driver for a long time - The IPv4Config
+   and DHCP protocols are not properly running the renew and lease expiration timers.
+   When the DHCP lease expires it is possible for a duplicate IP address to exist on
+   the network.  HSD 206136
+
+*  Network adapters must be initialized prior to running the socket application - Static
+   and dynamic IP address need to be properly assigned to the network adapters on the
+   system.  Note that sockets does not assign the IP addresses since it does not
+   understand how the system is connected to the network!
+
+*  The default device must contain the Efi\etc directory populated with files containing
+   the proper network configuration - A template set of files is in StdLib\Efi\etc.  Note
+   that the resolv.conf file contains the set of DNS servers.
+
+*  Since DHCP is not running when the sockets application is running, the last negotiated
+   packet is no longer available.  As a result, any of the options that DHCP did negotiate
+   are no longer available for sockets such as the list of DNS servers.
+
+*  DHCP does not request the domain name and domain name server (DNS) addresses.  This
+   requires that sockets use configuration files in Efi\etc!
+
+*  TCPv4 transfer rate is slow (< 10 Mbits/sec) - This is an unidentified issue.
+
+*  Raw socket applications are not able to pass the IP header as part of their
+   payload by using the IP option IP_HDRINCL.  This is because the UEFI IPv4 driver
+   (Ip4Dxe) does not support RawData. HSD 206136
+
+*  Only version 4 of the UEFI network stack is supported
+