- Move the smp::dpdk_eal_init() code into the dpdk::eal::init() where it belongs.
- Removed the unused "opts" parameter of dpdk::dpdk_device constructor - all its usage
has been moved to dpdk::eal::init().
- Cleanup in reactor.cc: #if HAVE_DPDK -> #ifdef HAVE_DPDK; since we give a -DHAVE_DPDK
option to a compiler.
Signed-off-by: Vlad Zolotarov <vladz@cloudius-systems.com>
This patch adds new class distributed_device which is responsible for
initializing HW device and it is shared between all cpus. Old device
class responsibility becomes managing rx/tx queue pair and it is local
per cpu. Each cpu have to call distributed_device::init_local_queue() to
create its own device. The logic to distribute cpus between available
queues (in case there is no enough queues for each cpu) is in the
distributed_device currently and not really implemented yet, so only one
queue or queues == cpus scenarios are supported currently, but this can
be fixed later.
The plan is to rename "distributed_device" to "device" and "device"
to "queue_pair" in later patches.
- Create a new class dpdk_eal that initializes DPDK EAL.
- Get rid of portmask crap and provide a port index to a dpdk::net_device
constructor.
Signed-off-by: Vlad Zolotarov <vladz@cloudius-systems.com>
Currently each cpu creates network device as part of native networking
stack creation and all cpus create native networking stack independently,
which makes it impossible to use data initialized by one cpu in another
cpu's networking device initialization. For multiqueue devices often some
parts of an initialization have to be handled by one cpu and all other
cpus should wait for the first one before creating their network devices.
Even without multiqueue proxy devices should be created after master
device is created so that proxy device may get a pointer to the master
at creation time (existing code uses global per cpu device pointer and
assume that master device is created on cpu 0 to compensate for the lack
of ordering).
This patch makes it possible to delay native networking stack creation
until network device is created. It allows one cpu to be responsible
for creation of network devices on multiple cpus. Single queue device
initialize master device on one cpu and call other cpus with a pointer
to master device and its cpu id which are used in proxy device creation.
This removes the need for per cpu device pointer and "master on cpu 0"
assumption from the code since now master device and slave devices know
about each other and can communicate directly.
- Currently only a single port and a single queue are supported.
- All DPDK EAL configuration is hard-coded in the dpdk_net_device constructor instead
of coming from the app parameters.
- No offload features are enabled.
- Tx: will spin in the dpdk_net_device::send() till there is a place in the HW ring to
place a current packet.
- Tx: copy data from the `packet` frags into the rte_mbuf's data.
Signed-off-by: Vlad Zolotarov <vladz@cloudius-systems.com>
