[edk2-devel] [PATCH v1] NetworkPkg/UefiPxeBcDxe: Fix PXE_BOOT_SERVERS usage in boot info parse flow
Siyuan, Fu
siyuan.fu at intel.com
Thu Aug 20 03:35:51 UTC 2020
Reviewed-by: Siyuan Fu <siyuan.fu at intel.com>
> -----Original Message-----
> From: Maciej Rabeda <maciej.rabeda at linux.intel.com>
> Sent: 2020年8月20日 0:54
> To: devel at edk2.groups.io
> Cc: Wu, Jiaxin <jiaxin.wu at intel.com>; Fu, Siyuan <siyuan.fu at intel.com>
> Subject: [PATCH v1] NetworkPkg/UefiPxeBcDxe: Fix PXE_BOOT_SERVERS usage
> in boot info parse flow
>
> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2876
>
> According to PXE 2.1 spec, DHCP option 43, tag 6 (PXE_DISCOVERY_CONTROL),
> bit 3 specifies whether PXE client should use/accept TFTP servers defined
> within PXE_BOOT_SERVERS list (tag 8). This bit was not being taken into
> account when choosing boot server IP in PxeBcDhcp4BootInfo().
>
> Cc: Jiaxin Wu <jiaxin.wu at intel.com>
> Cc: Siyuan Fu <siyuan.fu at intel.com>
> Signed-off-by: Maciej Rabeda <maciej.rabeda at linux.intel.com>
> ---
> NetworkPkg/UefiPxeBcDxe/PxeBcBoot.c | 10 +++++++---
> 1 file changed, 7 insertions(+), 3 deletions(-)
>
> diff --git a/NetworkPkg/UefiPxeBcDxe/PxeBcBoot.c
> b/NetworkPkg/UefiPxeBcDxe/PxeBcBoot.c
> index d062a526077b..ed9bca0f7de3 100644
> --- a/NetworkPkg/UefiPxeBcDxe/PxeBcBoot.c
> +++ b/NetworkPkg/UefiPxeBcDxe/PxeBcBoot.c
> @@ -499,12 +499,16 @@ PxeBcDhcp4BootInfo (
>
>
> //
>
> // Parse the boot server address.
>
> - // If prompt/discover is disabled, get the first boot server from the boot
> servers list.
>
> - // Otherwise, parse the boot server Ipv4 address from next server address field
> in DHCP header.
>
> + // If prompt/discover is disabled, server list should be used and is present
> (DHCP option 43),
>
> + // get the first boot server from the boot servers list.
>
> + // Otherwise, parse the boot server IPv4 address from next server address
> field in DHCP header.
>
> // If all these fields are not available, use option 54 instead.
>
> //
>
> VendorOpt = &Cache4->VendorOpt;
>
> - if (IS_DISABLE_PROMPT_MENU (VendorOpt->DiscoverCtrl) &&
> IS_VALID_BOOT_SERVERS (VendorOpt->BitMap)) {
>
> + if (IS_DISABLE_PROMPT_MENU (VendorOpt->DiscoverCtrl) &&
>
> + IS_VALID_BOOT_SERVERS (VendorOpt->BitMap) &&
>
> + IS_ENABLE_USE_SERVER_LIST (VendorOpt->DiscoverCtrl))
>
> + {
>
> Entry = VendorOpt->BootSvr;
>
> if (VendorOpt->BootSvrLen >= sizeof (PXEBC_BOOT_SVR_ENTRY) && Entry-
> >IpCnt > 0) {
>
> CopyMem (
>
> --
> 2.24.0.windows.2
-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#64479): https://edk2.groups.io/g/devel/message/64479
Mute This Topic: https://groups.io/mt/76290910/1813853
Group Owner: devel+owner at edk2.groups.io
Unsubscribe: https://edk2.groups.io/g/devel/unsub [edk2-devel-archive at redhat.com]
-=-=-=-=-=-=-=-=-=-=-=-
More information about the edk2-devel-archive
mailing list