[PATCH] EFI - PXE - include details from proxy (altserviceboot) offer when available

[Mroczek, Joseph T]

Addresses Bug# 41488
https://savannah.gnu.org/bugs/?41488 

This is my first time submitting a patch. Please let me know what I can do to 
help drive this improvement.

~joe

diff -Naur grub-2.02~beta2/grub-core/net/drivers/efi/efinet.c 
grub-2.02~beta2-bug41488-jtm/grub-core/net/drivers/efi/efinet.c
--- grub-2.02~beta2/grub-core/net/drivers/efi/efinet.c  2013-12-24 
11:29:27.000000000 -0500
+++ grub-2.02~beta2-bug41488-jtm/grub-core/net/drivers/efi/efinet.c     
2014-02-10 16:37:22.566895600 -0500
@@ -250,6 +250,12 @@
                                    &pxe_mode->dhcp_ack,
                                    sizeof (pxe_mode->dhcp_ack),
                                    1, device, path);
+    if (pxe_mode->unused[10])  //ProxyOfferRecieved
+      grub_net_configure_by_dhcp_ack (card->name, card, 0,
+                                   (struct grub_net_bootp_packet *)
+                                   &pxe_mode->proxy_offer,
+                                   sizeof (pxe_mode->proxy_offer),
+                                   1, device, path);
     return;
   }
 }