[net-next PATCH v7 00/10] Introduce RVU representors

Geetha sowjanya
2024-06-28T13:35:40Z

This series adds representor support for each rvu devices.
When switchdev mode is enabled, representor netdev is registered
for each rvu device. In implementation of representor model,
one NIX HW LF with multiple SQ and RQ is reserved, where each
RQ and SQ of the LF are mapped to a representor. A loopback channel
is reserved to support packet path between representors and VFs.
CN10K silicon supports 2 types of MACs, RPM and SDP. This
patch set adds representor support for both RPM and SDP MAC
interfaces.

- Patch 1: Refactors and exports the shared service functions.
- Patch 2: Implements basic representor driver.
- Patch 3: Add devlink support to create representor netdevs that
can be used to manage VFs.
- Patch 4: Implements basec netdev_ndo_ops.
- Patch 5: Installs tcam rules to route packets between representor and
VFs.
- Patch 6: Enables fetching VF stats via representor interface
- Patch 7: Adds support to sync link state between representors and VFs .
- Patch 8: Enables configuring VF MTU via representor netdevs.
- Patch 9: Add representors for sdp MAC.
- Patch 10: Add devlink port support.

Command to create VF representor
#devlink dev eswitch set pci/0002:1c:00.0 mode switchdev
VF representors are created for each VF when switch mode is set switchdev on representor PCI device
# devlink dev eswitch set pci/0002:1c:00.0 mode switchdev
# ip link show
25: r0p1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/ether 32:0f:0f:f0:60:f1 brd ff:ff:ff:ff:ff:ff
26: r1p1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/ether 3e:5d:9a:4d:e7:7b brd ff:ff:ff:ff:ff:ff

#devlink dev
pci/0002:01:00.0
pci/0002:02:00.0
pci/0002:03:00.0
pci/0002:04:00.0
pci/0002:05:00.0
pci/0002:06:00.0
pci/0002:07:00.0

~# devlink port
pci/0002:1c:00.0/0: type eth netdev r0p1v0 flavour pcipf controller 0 pfnum 1 vfnum 0 external false splittable false
pci/0002:1c:00.0/1: type eth netdev r1p1v1 flavour pcivf controller 0 pfnum 1 vfnum 1 external false splittable false
pci/0002:1c:00.0/2: type eth netdev r2p1v2 flavour pcivf controller 0 pfnum 1 vfnum 2 external false splittable false
pci/0002:1c:00.0/3: type eth netdev r3p1v3 flavour pcivf controller 0 pfnum 1 vfnum 3 external false splittable false

-----------
v1-v2:
-Fixed build warnings.
-Address review comments provided by "Kalesh Anakkur Purayil".

v2-v3:
- Used extack for error messages.
- As suggested reworked commit messages.
- Fixed sparse warning.

v3-v4:
- Patch 2 & 3: Fixed coccinelle reported warnings.
- Patch 10: Added devlink port support.

v4-v5:
- Patch 3: Removed devm_* usage in rvu_rep_create()
- Patch 3: Fixed build warnings.

v5-v6:
- Addressed review comments provided by "Simon Horman".
- Added review tag.

v6-v7:
- Rebased on top net-next branch.

Geetha sowjanya (10):
octeontx2-pf: Refactoring RVU driver
octeontx2-pf: RVU representor driver
octeontx2-pf: Create representor netdev
octeontx2-pf: Add basic net_device_ops
octeontx2-af: Add packet path between representor and VF
octeontx2-pf: Get VF stats via representor
octeontx2-pf: Add support to sync link state between representor and
VFs
octeontx2-pf: Configure VF mtu via representor
octeontx2-pf: Add representors for sdp MAC
octeontx2-pf: Add devlink port support

.../net/ethernet/marvell/octeontx2/Kconfig | 8 +
.../ethernet/marvell/octeontx2/af/Makefile | 3 +-
.../ethernet/marvell/octeontx2/af/common.h | 2 +
.../net/ethernet/marvell/octeontx2/af/mbox.h | 74 ++
.../net/ethernet/marvell/octeontx2/af/npc.h | 1 +
.../net/ethernet/marvell/octeontx2/af/rvu.c | 11 +
.../net/ethernet/marvell/octeontx2/af/rvu.h | 30 +-
.../marvell/octeontx2/af/rvu_debugfs.c | 27 -
.../marvell/octeontx2/af/rvu_devlink.c | 6 +
.../ethernet/marvell/octeontx2/af/rvu_nix.c | 81 ++-
.../marvell/octeontx2/af/rvu_npc_fs.c | 5 +
.../ethernet/marvell/octeontx2/af/rvu_reg.h | 4 +
.../ethernet/marvell/octeontx2/af/rvu_rep.c | 464 ++++++++++++
.../marvell/octeontx2/af/rvu_struct.h | 26 +
.../marvell/octeontx2/af/rvu_switch.c | 20 +-
.../ethernet/marvell/octeontx2/nic/Makefile | 2 +
.../ethernet/marvell/octeontx2/nic/cn10k.c | 4 +-
.../ethernet/marvell/octeontx2/nic/cn10k.h | 2 +-
.../marvell/octeontx2/nic/otx2_common.c | 56 +-
.../marvell/octeontx2/nic/otx2_common.h | 84 ++-
.../marvell/octeontx2/nic/otx2_devlink.c | 49 ++
.../ethernet/marvell/octeontx2/nic/otx2_pf.c | 305 +++++---
.../marvell/octeontx2/nic/otx2_txrx.c | 38 +-
.../marvell/octeontx2/nic/otx2_txrx.h | 3 +-
.../ethernet/marvell/octeontx2/nic/otx2_vf.c | 19 +-
.../net/ethernet/marvell/octeontx2/nic/rep.c | 684 ++++++++++++++++++
.../net/ethernet/marvell/octeontx2/nic/rep.h | 53 ++
27 files changed, 1834 insertions(+), 227 deletions(-)
create mode 100644 drivers/net/ethernet/marvell/octeontx2/af/rvu_rep.c
create mode 100644 drivers/net/ethernet/marvell/octeontx2/nic/rep.c
create mode 100644 drivers/net/ethernet/marvell/octeontx2/nic/rep.h

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2.25.1