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In the URI device path node, any name rahter than address can be used for looking up the resources so that DNS service become needed to get answer of the name's address. Unfortunately the DNS is not defined in any of the device path nodes so that we use the EFI_IP4_CONFIG2_PROTOCOL and EFI_IP6_CONFIG_PROTOCOL to obtain it. These two protcols are defined the sections of UEFI specification. 27.5 EFI IPv4 Configuration II Protocol 27.7 EFI IPv6 Configuration Protocol include/grub/efi/api.h: Add new structure and protocol UUID of EFI_IP4_CONFIG2_PROTOCOL and EFI_IP6_CONFIG_PROTOCOL. grub-core/net/drivers/efi/efinet.c: Use the EFI_IP4_CONFIG2_PROTOCOL and EFI_IP6_CONFIG_PROTOCOL to obtain the list of DNS server address for IPv4 and IPv6 respectively. The address of DNS servers is structured into DHCPACK packet and feed into the same DHCP packet processing functions to ensure the network interface is setting up the same way it used to be. Signed-off-by: Michael Chang <mchang@suse.com> Signed-off-by: Ken Lin <ken.lin@hpe.com> Patch-Name: efinet-set-dns-from-uefi-proto.patch |
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