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net/drivers/efi/efinet: Configure VLAN from UEFI device used for PXE

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This patch handles automatic configuration of VLAN when booting from PXE
on UEFI hardware.

Signed-off-by: Chad Kimes <chkimes@github.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Chad Kimes authored and Daniel Kiper committed 2022-04-20 14:20:36 +02:00
1 parent c143056a34
commit 9322a7740f
1 file changed
+33 -5
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grub-core/net/drivers/efi/efinet.c
+33 -5
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@@ -339,6 +339,10 @@ grub_efi_net_config_real (grub_efi_handle_t hnd, char **device,
{ {
struct grub_net_card *card; struct grub_net_card *card;
grub_efi_device_path_t *dp; grub_efi_device_path_t *dp;
struct grub_net_network_level_interface *inter;
grub_efi_device_path_t *vlan_dp;
grub_efi_uint16_t vlan_dp_len;
grub_efi_vlan_device_path_t *vlan;
dp = grub_efi_get_device_path (hnd); dp = grub_efi_get_device_path (hnd);
if (! dp) if (! dp)
@@ -387,11 +391,35 @@ grub_efi_net_config_real (grub_efi_handle_t hnd, char **device,
if (! pxe) if (! pxe)
continue; continue;
pxe_mode = pxe->mode; pxe_mode = pxe->mode;
grub_net_configure_by_dhcp_ack (card->name, card, 0,
(struct grub_net_bootp_packet *) inter = grub_net_configure_by_dhcp_ack (card->name, card, 0,
&pxe_mode->dhcp_ack, (struct grub_net_bootp_packet *)
sizeof (pxe_mode->dhcp_ack), &pxe_mode->dhcp_ack,
1, device, path); sizeof (pxe_mode->dhcp_ack),
1, device, path);
if (inter != NULL)
{
/*
* Search the device path for any VLAN subtype and use it
* to configure the interface.
*/
vlan_dp = dp;
while (!GRUB_EFI_END_ENTIRE_DEVICE_PATH (vlan_dp))
{
if (GRUB_EFI_DEVICE_PATH_TYPE (vlan_dp) == GRUB_EFI_MESSAGING_DEVICE_PATH_TYPE &&
GRUB_EFI_DEVICE_PATH_SUBTYPE (vlan_dp) == GRUB_EFI_VLAN_DEVICE_PATH_SUBTYPE)
{
vlan = (grub_efi_vlan_device_path_t *) vlan_dp;
inter->vlantag = vlan->vlan_id;
break;
}
vlan_dp_len = GRUB_EFI_DEVICE_PATH_LENGTH (vlan_dp);
vlan_dp = (grub_efi_device_path_t *) ((grub_efi_uint8_t *) vlan_dp + vlan_dp_len);
}
}
return; return;
} }
} }