On Mon, Dec 29, 2014 at 09:14:01PM -0800, sfeldma@gmail.com wrote: > From: Scott Feldman > > [This is a collaboration between myself and Jiri Pirko]. > > This patch set adds a new ethernet switch device, called rocker. Rocker is > intended to emulate HW features of switch ASICs found in today's > data-center-class switch/routers. The original motivation in creating a new > device is to accelerate device driver development for ethernet switches in the > Linux kernel. A device driver for rocker already exists in the Linux 3.18 > kernel and loads against this device. Basic L2 switching (bridging) > functionality is offloaded to the device. Work continues to enable offloading > of L3 routing functions and ACLs, as well as support for a flow-based modes, > such as OpenVSwitch with OpenFlow. Future support for terminating L2-over-L3 > tunnels is also planned. > > The core network processing functions are based on the spec of a real device: > Broadcom's OF-DPA. Specifically, rocker borrows OF-DPA's network processing > pipeline comprised of flow match and action tables. Only the OF-DPA spec was > used in constructing rocker. The rocker developers do not have access to the > real OF-DPA's software source code, so this is a clean-room, ground-up > development. > > Each rocker device is a PCI device with a memory-mapped register space and > MSI-X interrupts for command and event processing, as well as CPU-bound I/O. > Each device can support up to 62 "front-panel" ports, which present themselves > as -netdev attachment points. The device is programmed using OF-DPA flow and > group tables to setup the flow pipeline. The programming defines the > forwarding path for packets ingressing on 'front-panel' ports. The forwarding > path can look at L2/L3/L4 packet header to forward the packet to its > destination. For the performance path, packets would ingress and egress only > on the device, and not be passed up to the device driver (or host OS). The > slow path for control packets will forward packets to the CPU via the device > driver for host OS processing. > > A QMP/HMP interface is added to give inside into the device's internal port > configuration and flow/group tables. > > A test directory is included with some basic sanity tests to verify the device > and driver. > > Scott Feldman (10): > pci: move REDHAT_SDHCI device ID to make room for Rocker > net: add MAC address string printer > virtio-net: use qemu_mac_strdup_printf > rocker: add register programming guide > pci: add rocker device ID > pci: add network device class 'other' for network switches > rocker: add new rocker switch device > qmp: add rocker device support > rocker: add tests > MAINTAINERS: add rocker > > MAINTAINERS | 6 + > default-configs/pci.mak | 1 + > docs/specs/pci-ids.txt | 3 +- > hmp-commands.hx | 56 + > hmp.c | 303 +++++ > hmp.h | 4 + > hw/net/Makefile.objs | 3 + > hw/net/rocker/reg_guide.txt | 957 +++++++++++++ > hw/net/rocker/rocker.c | 1440 ++++++++++++++++++++ > hw/net/rocker/rocker.h | 76 ++ > hw/net/rocker/rocker_desc.c | 379 ++++++ > hw/net/rocker/rocker_desc.h | 57 + > hw/net/rocker/rocker_fp.c | 243 ++++ > hw/net/rocker/rocker_fp.h | 54 + > hw/net/rocker/rocker_hw.h | 475 +++++++ > hw/net/rocker/rocker_of_dpa.c | 2644 ++++++++++++++++++++++++++++++++++++ > hw/net/rocker/rocker_of_dpa.h | 25 + > hw/net/rocker/rocker_tlv.h | 247 ++++ > hw/net/rocker/rocker_world.c | 108 ++ > hw/net/rocker/rocker_world.h | 63 + > hw/net/rocker/test/README | 5 + > hw/net/rocker/test/all | 19 + > hw/net/rocker/test/bridge | 43 + > hw/net/rocker/test/bridge-stp | 52 + > hw/net/rocker/test/bridge-vlan | 52 + > hw/net/rocker/test/bridge-vlan-stp | 64 + > hw/net/rocker/test/port | 22 + > hw/net/rocker/test/tut.dot | 8 + > hw/net/virtio-net.c | 12 +- > include/hw/pci/pci.h | 3 +- > include/hw/pci/pci_ids.h | 1 + > include/net/net.h | 1 + > net/net.c | 7 + > qapi-schema.json | 51 + > qmp-commands.hx | 24 + > 35 files changed, 7497 insertions(+), 11 deletions(-) > create mode 100644 hw/net/rocker/reg_guide.txt > create mode 100644 hw/net/rocker/rocker.c > create mode 100644 hw/net/rocker/rocker.h > create mode 100644 hw/net/rocker/rocker_desc.c > create mode 100644 hw/net/rocker/rocker_desc.h > create mode 100644 hw/net/rocker/rocker_fp.c > create mode 100644 hw/net/rocker/rocker_fp.h > create mode 100644 hw/net/rocker/rocker_hw.h > create mode 100644 hw/net/rocker/rocker_of_dpa.c > create mode 100644 hw/net/rocker/rocker_of_dpa.h > create mode 100644 hw/net/rocker/rocker_tlv.h > create mode 100644 hw/net/rocker/rocker_world.c > create mode 100644 hw/net/rocker/rocker_world.h > create mode 100644 hw/net/rocker/test/README > create mode 100755 hw/net/rocker/test/all > create mode 100755 hw/net/rocker/test/bridge > create mode 100755 hw/net/rocker/test/bridge-stp > create mode 100755 hw/net/rocker/test/bridge-vlan > create mode 100755 hw/net/rocker/test/bridge-vlan-stp > create mode 100755 hw/net/rocker/test/port > create mode 100644 hw/net/rocker/test/tut.dot CCing Jason Wang, who may also be interested in reviewing this series. Stefan