Kernel/Networking: Modify outgoing packet in place

This avoids creation of new buffers and unnecessary memcpys. The old
interface still exists for UDP but will be removed when I am less lazy.

From testing it does not appear to have any performance improvement but
this is most likely due to other bottlenecks as extra copies should
always be worse.

1 files changed, 2 insertions, 0 deletions

diff --git a/kernel/drivers/rtl8139.h b/kernel/drivers/rtl8139.h
index c61e6de..ebefd77 100644
--- a/kernel/drivers/rtl8139.h
+++ b/kernel/drivers/rtl8139.h
@@ -2,3 +2,5 @@
 void get_mac_address(u8 mac[6]);
 void rtl8139_init(void);
 void rtl8139_send_data(u8 *data, u16 data_size);
+u8 *nic_get_buffer(void);
+void nic_send_buffer(u16 data_size);