GSOC 2015 - NE2000 emulation in bhyve Status

[Alex Teaca]

Hi,

>From the last status report:

implement 2 commits:
- parse the input string parameter and get the tap name and mac address
from it
- implement some logging and asserts related with the receive buffer ring

Also, I start to think about the receive protocol which is the next step of
the implementation by reading the specification from the datasheet
and understanding the implementation of the ED driver regarding the way it
receives packets from the NE2000 memory. It is pretty clear
what we need to implement and after a short design I will be able to
implement.

Thanks,
Alex


On Sun, Jun 14, 2015 at 11:37 PM, Alex Teaca <ionutalex.teaca at gmail.com>
wrote:

> Hi,
>
> At the moment I am able to configure an IP address on the network
> interface corresponding to the NE2000 NIC. When I ping
> to the host IP, the tcpdump catches both ARP Request (sent by the guest
> using the NE2000 card) and an ARP Reply
> sent by the host OS. So, there is implemented the transmission protocol.
> For reception, the packets are only read
> from the tap device when it is notified by the mevent mechanism.
>
> For mode details, see the commits.
>
> Thanks,
> Alex
>
>
> On Tue, Jun 2, 2015 at 7:45 PM, Alex Teaca <ionutalex.teaca at gmail.com>
> wrote:
>
>> Hi,
>>
>> I've started the implementation of the NE2000 module. At the moment the
>> ED driver is able to probe the emulated device (RealTek 8029) and add it as
>> a network interface.
>>
>> Some of the features which are implemented:
>> - implement some logging support
>> - clone the /usr/src/sys/dev/ed/if_edreg.h register interface from the ed
>> driver into the bhyve tree sources
>> - implement the NE2000 registers support and an API to access the NIC
>> registers (get and set by offset)
>> - design and implement the Remote DMA protocol so the ED driver can store
>> and load from the NIC's RAM memory
>>
>> Thanks,
>> Alex
>>
>>
>