[PATCH net-next 0/6] net: mana: Per-vPort EQ and MSI-X interrupt management

[Long Li]

This series adds per-vPort Event Queue (EQ) allocation and MSI-X interrupt
management for the MANA driver. Previously, all vPorts shared a single set
of EQs. This change enables dedicated EQs per vPort with support for both
dedicated and shared MSI-X vector allocation modes.

Patch 1 moves EQ ownership from mana_context to per-vPort mana_port_context
and exports create/destroy functions for the RDMA driver.

Patch 2 adds device capability queries to determine whether MSI-X vectors
should be dedicated per-vPort or shared. When the number of available MSI-X
vectors is insufficient for dedicated allocation, the driver enables sharing
mode with bitmap-based vector assignment.

Patch 3 introduces the GIC (GDMA IRQ Context) abstraction with reference
counting, allowing multiple EQs to safely share a single MSI-X vector.

Patch 4 converts the global EQ allocation in probe/resume to use the new
GIC functions.

Patch 5 adds per-vPort GIC lifecycle management, calling get/put on each
EQ creation and destruction during vPort open/close.

Patch 6 extends the same GIC lifecycle management to the RDMA driver's EQ
allocation path.

Long Li (6):
  net: mana: Create separate EQs for each vPort
  net: mana: Query device capabilities and configure MSI-X sharing for
    EQs
  net: mana: Introduce GIC context with refcounting for interrupt
    management
  net: mana: Use GIC functions to allocate global EQs
  net: mana: Allocate interrupt context for each EQ when creating vPort
  RDMA/mana_ib: Allocate interrupt contexts on EQs

 drivers/infiniband/hw/mana/main.c             |  47 ++-
 drivers/infiniband/hw/mana/qp.c               |   4 +-
 .../net/ethernet/microsoft/mana/gdma_main.c   | 309 +++++++++++++-----
 drivers/net/ethernet/microsoft/mana/mana_en.c | 164 ++++++----
 include/net/mana/gdma.h                       |  29 +-
 include/net/mana/mana.h                       |   7 +-
 6 files changed, 402 insertions(+), 158 deletions(-)

-- 
2.43.0