[Bug 1879012] Re: GRUB does not bring up networking when loaded over HTTP

[Dimitri John Ledkov]

So the SUSE srpm has a lot interesting patches that implement:
 * configuring networking from EFI
   - bootp bootpv6
   - dhcp dhcpv4
   - static, v4 & v6, with/without port numbers
   - http https file access via EFI protocol

I don't believe any of that is upstream, and/or only partially, But i
should double check.

I think we want to cherrypick:

# Support HTTP Boot IPv4 and IPv6 (fate#320129)
Patch281:       0002-net-read-bracketed-ipv6-addrs-and-port-numbers.patch
Patch282:       0003-bootp-New-net_bootp6-command.patch
Patch283:       0004-efinet-UEFI-IPv6-PXE-support.patch
Patch284:       0005-grub.texi-Add-net_bootp6-doument.patch
Patch285:       0006-bootp-Add-processing-DHCPACK-packet-from-HTTP-Boot.patch
Patch286:       0007-efinet-Setting-network-from-UEFI-device-path.patch
Patch287:       0008-efinet-Setting-DNS-server-from-UEFI-protocol.patch
# UEFI HTTP and related network protocol support (FATE#320130)
Patch420:       0001-add-support-for-UEFI-network-protocols.patch
Patch421:       0002-AUDIT-0-http-boot-tracker-bug.patch

Not sure if we want a feature to automatically scan/find grub.cfg on
remote host by ip/mac/uuid/etc:

# bsc#1166409 - Grub netbooting does not search for grub.cfg files with mac
# address or ip address in filename
Patch700:       0001-normal-Move-common-datetime-functions-out-of-the-nor.patch
Patch701:       0002-kern-Add-X-option-to-printf-functions.patch
Patch702:       0003-normal-main-Search-for-specific-config-files-for-net.patch
Patch703:       0004-datetime-Enable-the-datetime-module-for-the-emu-plat.patch

Also they have interesting fixes to limit screen resolution, to make
fonts readable out of the box.

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https://bugs.launchpad.net/bugs/1879012

Title:
  GRUB does not bring up networking when loaded over HTTP

Status in MAAS:
  Confirmed
Status in grub2 package in Ubuntu:
  New
Status in shim-signed package in Ubuntu:
  New

Bug description:
  When using MAAS to HTTP boot on x86_64 UEFI grub drops to the command
  line. net_ls_addr shows the system has no address. If I run net_dhcp I
  get an address. I can then download the remote grub.cfg file and
  continue boot.

  When reproducing with QEMU you have to manually reconfigure the boot
  order to try HTTP before TFTP:

  # efibootmgr -v
  BootCurrent: 0002
  Timeout: 0 seconds
  BootOrder: 0002,0003,0001,0000,0004
  Boot0000* UiApp	FvVol(7cb8bdc9-f8eb-4f34-aaea-3ee4af6516a1)/FvFile(462caa21-7614-4503-836e-8ab6f4662331)
  Boot0001* UEFI QEMU QEMU HARDDISK 	PciRoot(0x0)/Pci(0x2,0x0)/Pci(0x0,0x0)/SCSI(1,1)N.....YM....R,Y.
  Boot0002* UEFI PXEv4 (MAC:00163E03BE1A)	PciRoot(0x0)/Pci(0x4,0x0)/Pci(0x0,0x0)/MAC(00163e03be1a,1)/IPv4(0.0.0.00.0.0.0,0,0)N.....YM....R,Y.
  Boot0003* UEFI HTTPv4 (MAC:00163E03BE1A)	PciRoot(0x0)/Pci(0x4,0x0)/Pci(0x0,0x0)/MAC(00163e03be1a,1)/IPv4(0.0.0.00.0.0.0,0,0)/Uri()N.....YM....R,Y.
  Boot0004* EFI Internal Shell	FvVol(7cb8bdc9-f8eb-4f34-aaea-3ee4af6516a1)/FvFile(7c04a583-9e3e-4f1c-ad65-e05268d0b4d1)
  # efibootmgr -o 0003,0002,0001,0004
  BootCurrent: 0002
  Timeout: 0 seconds
  BootOrder: 0003,0002,0001,0004
  Boot0000* UiApp
  Boot0001* UEFI QEMU QEMU HARDDISK
  Boot0002* UEFI PXEv4 (MAC:00163E03BE1A)
  Boot0003* UEFI HTTPv4 (MAC:00163E03BE1A)
  Boot0004* EFI Internal Shell

  grub> net_ls_addr
  grub>
  grub> net_dhcp
  efinet0:dhcp 00:16:3e:03:be:1a 10.0.0.75
  grub> configfile (http,10.0.0.2:5248)/grub/grub.cfg-default-amd64
  Booting under MAAS direction...

  The kernel and initrd are downloaded but it hangs there.

  I believe the bug is in grub. As MAAS receives its bootloaders from
  the stream at images.maas.io generated by lp:maas-images this affects
  all versions of MAAS. Currently MAAS uses GRUB and the Shim from
  Bionic however I have been able to reproduce this bug using GRUB and
  the shim from Focal as well.

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