The Mellanox NICs support SR-IOV and have E-Switch feature.
When SR-IOV is set up in switchdev mode and E-Switch is enabled
we have so called VF representors in the system. All representors
belonging to the same E-Switch are created on the basis of the
single PCI function and with current implementation each representor
has its own dedicated Infiniband device and operates within its
own Infiniband context. It is proposed to provide representors
as ports of the single Infiniband device and operate on the
shared Infiniband context.
mlx5_pci_probe() routine is planned to be extended to probe
the ports of found Infiniband devices. All active ports,
belonging to the same Infiniband device will use the signle
shared Infiniband context of that device:
- QP are created within shared context, with assigning to
specified port
- Verb flows are also created with specifying port index
- Protection Domain is shared by all representors
- Global Memory Regions Cache is shared by all representors,
local ones are not (not in this patchset)
- Shared Asynchronous Event Handler distributes events
among the device ports (not in this patchset)
- UAR mapping to user space is also shared (not in patchset)
Each representor has its own attach network interface device,
interface name and index can be retrieved via IB device and
port index, so the link control is performed via Netlink
in the same way as in existing implementation.
Signed-off-by: Viacheslav Ovsiienko <viachesl...@mellanox.com>
Viacheslav Ovsiienko (10):
net/mlx5: add multiport IB device port structure
net/mlx5: modify get ifindex routine for multiport IB
net/mlx5: add getting IB ports number for multiport IB
net/mlx5: add multiport IB device support to probing
net/mlx5: add IB shared context alloc/free functions
net/mlx5: switch to the names in the shared IB context
net/mlx5: switch to the shared Protection Domain
net/mlx5: switch to the shared context IB attributes
net/mlx5: switch to the shared IB device context
net/mlx5: provide IB port for the object being created
drivers/net/mlx5/mlx5.c | 529 ++++++++++++++++++++++++++-----------
drivers/net/mlx5/mlx5.h | 34 ++-
drivers/net/mlx5/mlx5_ethdev.c | 29 +-
drivers/net/mlx5/mlx5_flow.c | 2 +
drivers/net/mlx5/mlx5_flow_dv.c | 8 +-
drivers/net/mlx5/mlx5_flow_verbs.c | 7 +-
drivers/net/mlx5/mlx5_mr.c | 4 +-
drivers/net/mlx5/mlx5_nl.c | 65 ++++-
drivers/net/mlx5/mlx5_rxq.c | 41 +--
drivers/net/mlx5/mlx5_socket.c | 4 +-
drivers/net/mlx5/mlx5_stats.c | 22 +-
drivers/net/mlx5/mlx5_trigger.c | 2 +-
drivers/net/mlx5/mlx5_txq.c | 24 +-
13 files changed, 545 insertions(+), 226 deletions(-)
--
1.8.3.1
