case, but I did try using socket(AF_PACKET)
bound to a tun interface, just to see if sendmmsg()/recvmmsg() works
then. It does, but indeed for packets that are sent to the socket, they
need to be reinjected into the kernel receive path. So I'll be happy to
test out your preliminary code.
--
Met vriendelijke groet / with kind regards,
Guus Sliepen
UDP packets, those will never be
optimized.
So I think GSO/GRO is not the way to go, but there really should be a
way to receive and send many individual packets in one system call.
--
Met vriendelijke groet / with kind regards,
Guus Sliepen
et data as tun seems to be doing now.
>
> Agreed.
Ok. So how should the userspace API work? Creating an AF_PACKET socket
and then using a tun ioctl to create a tun interface and bind it to the
socket?
int fd = socket(AF_PACKET, ...)
struct ifreq ifr = {...};
ioctl(fd, TUNSETIFF, &ifr);
--
Met vriendelijke groet / with kind regards,
Guus Sliepen
o userspace, so regular sendmmsg()/recvmmsg() can
be used. There is tun_get_socket() which is used internally in the
kernel, but this is not exposed to userspace, and doesn't look trivial
to do either.
What would be the right way to do this?
--
Met vriendelijke groet / with kind regards,
Guus Sliepen
