10GigEthr-02 (iexgbe) B.11.31.1303 Ethernet Driver Release Notes (Edition 2)

Table 5 HP-UX 11i v3 May 2012 Fixes — 10GigEthr-02 B.11.31.1205
DescriptionSR number
AVIO: High outbound discards on HPVM guest with iexgbe interface. TCP connections (such
as rlogin and telnet) from a remote system to the guest do not work and the guest hangs
intermittently.
QXCR1001209171
When packets with an invalid LLC, IP or TCP header length are sent through the HPVM guest
igssn interface, the iexgbe driver will drop such packets. But the guest is not aware of
QXCR1001182096
such drops and it continues to expect send completion for those packets. This situation results
in a gradual reduction of the number of usable descriptors for igssn, which causes
performance to degrade and, eventually, the igssn interface to hang.
For non-Flex-10 (non-VC) interfaces, when using customized iexgbe configuration file settings
that enable Jumbo Frames (MTU size greater than 1500), problems occur at startup. This
QXCR1001192266
problem surfaced after Tx and Rx flow control support was introduced to the iexgbe driver
(QXCR1001093086). The workaround in the preceding release was to disable flow control
by default. The B.11.31.1205 release sets Tx and Rx flow control to ON by default. Any
request to turn on Jumbo Frames will override the Rx flow control settings and automatically
set Rx flow control to OFF.
Table 6 HP-UX 11i v3 March 2012 Fixes — 10GigEthr-02 B.11.31.1203.01
DescriptionSR number
Disables flow control by default. This removes the possibility of bringing up issues introduced
with the B.11.31.1201 release (QXCR1001093086). For more information about the issues,
see Section 4 (page 10).
QXCR1001192266
3 Problems fixed in this release 9