Need advice on sys5 shm and zero copy sockets

[Adrian Chadd]

On 2 April 2013 20:07, Julian Elischer <julian at freebsd.org> wrote:

> this sound somewhat like what I did back in the 90s with BSD4.3
> unfortunately it was not done with TCP (or sctp of course)
>
> what we did was to create a special shared memeory device driver.
> Then we added ioctls to the disk driver layer to write named
> blocks of memory from that device to the raw device (we didin't use a
> filesystem).

Funny that. I have to do something like this for this software radio
NIC, that does a hundred or so megabytes a second of DMA.

Eek.


Adrian