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efi_loader: Add network access support

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We can now successfully boot EFI applications from disk, but users
may want to also run them from a PXE setup.

This patch implements rudimentary network support, allowing a payload
to send and receive network packets.

With this patch, I was able to successfully run grub2 with network
access inside of QEMU's -M xlnx-ep108.

Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf
2016-05-06 21:01:01 +02:00
committed by Tom Rini
parent 7e6621a1ca
commit 0efe1bcf5c
9 changed files with 432 additions and 3 deletions
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4
net/net.c
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@@ -146,7 +146,7 @@ static unsigned net_ip_id;
/* Ethernet bcast address */
const u8 net_bcast_ethaddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
const u8 net_null_ethaddr[6];
#ifdef CONFIG_API
#if defined(CONFIG_API) || defined(CONFIG_EFI_LOADER)
void (*push_packet)(void *, int len) = 0;
#endif
/* Network loop state */
@@ -1054,7 +1054,7 @@ void net_process_received_packet(uchar *in_packet, int len)
if (len < ETHER_HDR_SIZE)
return;
#ifdef CONFIG_API
#if defined(CONFIG_API) || defined(CONFIG_EFI_LOADER)
if (push_packet) {
(*push_packet)(in_packet, len);
return;