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NetworkPkg: Update iSCSI driver to check existing AIP instances

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According to UEFI spec, iSCSI HBA must install an AIP instance
with network boot information block. This patch updates UEFI
iSCSI driver to check whether there are AIP instances installed
by iSCSI HBA adapter and if yes, the UEFI iSCSI driver will return
EFI_ABORTED in its driver binding Start(). Also the patch
introduces a PCD PcdIScsiAIPNetworkBootPolicy for
platform owner to define particular policy when the iSCSI HBA
will survive and UEFI iSCSI will fail. The default policy is
STOP_UEFI_ISCSI_IF_AIP_SUPPORT_OFFLOAD which means that when ISCSI HBA
adapter installs an AIP and claims it supports an offload engine
for iSCSI boot, the UEFI iSCSI driver will return EFI_ABORTED.

The patch V2 adds a new value ALWAYS_USE_UEFI_ISCSI_AND_IGNORE_AIP
to PCD PcdIScsiAIPNetworkBootPolicy. This allows the platform to
avoid running into buggy IHV drivers that have issue with AIP.
It is suggested by El-Haj-Mahmoud,Samer <samer.el-haj-mahmoud@hpe.com>.

Cc: El-Haj-Mahmoud Samer <samer.el-haj-mahmoud@hpe.com>

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ye Ting <ting.ye@intel.com>
Reviewed-by: Fu siyuan <siyuan.fu@intel.com>
Reviewed-by: Wu Jiaxin <jiaxin.wu@intel.com>
Reviewed-by: El-Haj-Mahmoud Samer <samer.el-haj-mahmoud@hpe.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19367 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Ye Ting
2015-12-18 06:31:31 +00:00
committed by tye1
parent fbaab71534
commit 8873b174c7
6 changed files with 181 additions and 3 deletions
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12
NetworkPkg/NetworkPkg.dec
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@@ -78,5 +78,17 @@
# @Prompt Type Value of Dhcp6 Unique Identifier (DUID).
gEfiNetworkPkgTokenSpaceGuid.PcdDhcp6UidType|4|UINT8|0x10000001
## Network boot policy to stop UEFI iSCSI if applicable.
# 0x00 = Always use UEFI iSCSI and ignore AIP.
# 0x01 = Stop UEFI iSCSI if iSCSI HBA adapter produces AIP protocol with Network Boot.
# 0x02 = Stop UEFI iSCSI if iSCSI HBA adapter supports booting from iSCSI IPv4 targets.
# 0x04 = Stop UEFI iSCSI if iSCSI HBA adapter supports booting from iSCSI IPv6 targets.
# 0x08 = Stop UEFI iSCSI if iSCSI HBA adapter supports an offload engine for iSCSI boot.
# 0x10 = Stop UEFI iSCSI if iSCSI HBA adapter supports multipath I/O for iSCSI boot.
# 0x20 = Stop UEFI iSCSI if iSCSI HBA adapter is currently configured to boot from iSCSI IPv4 targets.
# 0x40 = Stop UEFI iSCSI if iSCSI HBA adapter is currently configured to boot from iSCSI IPv6 targets.
# @Prompt Type Value of network boot policy used in iSCSI.
gEfiNetworkPkgTokenSpaceGuid.PcdIScsiAIPNetworkBootPolicy|0x08|UINT8|0x10000007
[UserExtensions.TianoCore."ExtraFiles"]
NetworkPkgExtra.uni