So far bounce buffers were only used for disk I/O, but network I/O
may suffer from the same problem.
On platforms that have problems doing DMA on high addresses, let's
also bounce outgoing network packets. Incoming ones always already
get bounced.
Signed-off-by: Alexander Graf <ag...@suse.de>
---
lib/efi_loader/efi_net.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/lib/efi_loader/efi_net.c b/lib/efi_loader/efi_net.c
index dd3b485..6a8a0d7 100644
--- a/lib/efi_loader/efi_net.c
+++ b/lib/efi_loader/efi_net.c
@@ -152,7 +152,14 @@ static efi_status_t EFIAPI efi_net_transmit(struct
efi_simple_network *this,
return EFI_EXIT(EFI_INVALID_PARAMETER);
}
+#ifdef CONFIG_EFI_LOADER_BOUNCE_BUFFER
+ /* Ethernet packets always fit, just bounce */
+ memcpy(efi_bounce_buffer, buffer, buffer_size);
+ net_send_packet(efi_bounce_buffer, buffer_size);
+#else
net_send_packet(buffer, buffer_size);
+#endif
+
new_tx_packet = buffer;
return EFI_EXIT(EFI_SUCCESS);
--
1.8.5.6
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