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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Ian Page Hands <iphands@gmail.com>
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Date: Tue, 8 Jun 2021 13:48:56 -0400
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Subject: [PATCH] efinet: Add DHCP proxy support
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If a proxyDHCP configuration is used, the server name, server IP and boot
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file values should be taken from the DHCP proxy offer instead of the DHCP
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server ack packet. Currently that case is not handled, add support for it.
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---
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grub-core/net/drivers/efi/efinet.c | 25 +++++++++++++++++++++++--
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1 file changed, 23 insertions(+), 2 deletions(-)
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diff --git a/grub-core/net/drivers/efi/efinet.c b/grub-core/net/drivers/efi/efinet.c
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index e11d759f19a..1a24f38a21a 100644
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--- a/grub-core/net/drivers/efi/efinet.c
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+++ b/grub-core/net/drivers/efi/efinet.c
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@@ -850,10 +850,31 @@ grub_efi_net_config_real (grub_efi_handle_t hnd, char **device,
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else
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{
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grub_dprintf ("efinet", "using ipv4 and dhcp\n");
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+
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+ struct grub_net_bootp_packet *dhcp_ack = &pxe_mode->dhcp_ack;
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+
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+ if (pxe_mode->proxy_offer_received)
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+ {
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+ grub_dprintf ("efinet", "proxy offer receive");
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+ struct grub_net_bootp_packet *proxy_offer = &pxe_mode->proxy_offer;
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+
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+ if (proxy_offer && dhcp_ack->boot_file[0] == '\0')
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+ {
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+ grub_dprintf ("efinet", "setting values from proxy offer");
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+ /* Here we got a proxy offer and the dhcp_ack has a nil boot_file
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+ * Copy the proxy DHCP offer details into the bootp_packet we are
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+ * sending forward as they are the deatils we need.
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+ */
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+ *dhcp_ack->server_name = *proxy_offer->server_name;
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+ *dhcp_ack->boot_file = *proxy_offer->boot_file;
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+ dhcp_ack->server_ip = proxy_offer->server_ip;
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+ }
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+ }
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+
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grub_net_configure_by_dhcp_ack (card->name, card, 0,
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(struct grub_net_bootp_packet *)
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- packet_buf,
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- packet_bufsz,
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+ &pxe_mode->dhcp_ack,
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+ sizeof (pxe_mode->dhcp_ack),
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1, device, path);
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grub_dprintf ("efinet", "device: `%s' path: `%s'\n", *device, *path);
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}
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