This series implements ethtool flow rules support for virtio_net using the
virtio flow filter (FF) specification. The implementation allows users to
configure packet filtering rules through ethtool commands, directing
packets to specific receive queues, or dropping them based on various
header fields.
The series starts with infrastructure changes to expose virtio PCI admin
capabilities and object management APIs. It then creates the virtio_net
directory structure and implements the flow filter functionality with support
for:
- Layer 2 (Ethernet) flow rules
- IPv4 and IPv6 flow rules
- TCP and UDP flow rules (both IPv4 and IPv6)
- Rule querying and management operations
Setting, deleting and viewing flow filters, -1 action is drop, postive
integers steer to that RQ:
$ ethtool -u ens9
4 RX rings available
Total 0 rules
$ ethtool -U ens9 flow-type ether src 1c:34:da:4a:33:dd action 0
Added rule with ID 0
$ ethtool -U ens9 flow-type udp4 dst-port 5001 action 3
Added rule with ID 1
$ ethtool -U ens9 flow-type tcp6 src-ip fc00::2 dst-port 5001 action 2
Added rule with ID 2
$ ethtool -U ens9 flow-type ip4 src-ip 192.168.51.101 action 1
Added rule with ID 3
$ ethtool -U ens9 flow-type ip6 dst-ip fc00::1 action -1
Added rule with ID 4
$ ethtool -U ens9 flow-type ip6 src-ip fc00::2 action -1
Added rule with ID 5
$ ethtool -U ens9 delete 4
$ ethtool -u ens9
4 RX rings available
Total 5 rules
Filter: 0
Flow Type: Raw Ethernet
Src MAC addr: 1C:34:DA:4A:33:DD mask: 00:00:00:00:00:00
Dest MAC addr: 00:00:00:00:00:00 mask: FF:FF:FF:FF:FF:FF
Ethertype: 0x0 mask: 0xFFFF
Action: Direct to queue 0
Filter: 1
Rule Type: UDP over IPv4
Src IP addr: 0.0.0.0 mask: 255.255.255.255
Dest IP addr: 0.0.0.0 mask: 255.255.255.255
TOS: 0x0 mask: 0xff
Src port: 0 mask: 0xffff
Dest port: 5001 mask: 0x0
Action: Direct to queue 3
Filter: 2
Rule Type: TCP over IPv6
Src IP addr: fc00::2 mask: ::
Dest IP addr: :: mask: ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
Traffic Class: 0x0 mask: 0xff
Src port: 0 mask: 0xffff
Dest port: 5001 mask: 0x0
Action: Direct to queue 2
Filter: 3
Rule Type: Raw IPv4
Src IP addr: 192.168.51.101 mask: 0.0.0.0
Dest IP addr: 0.0.0.0 mask: 255.255.255.255
TOS: 0x0 mask: 0xff
Protocol: 0 mask: 0xff
L4 bytes: 0x0 mask: 0xffffffff
Action: Direct to queue 1
Filter: 5
Rule Type: Raw IPv6
Src IP addr: fc00::2 mask: ::
Dest IP addr: :: mask: ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
Traffic Class: 0x0 mask: 0xff
Protocol: 0 mask: 0xff
L4 bytes: 0x0 mask: 0xffffffff
Action: Drop
Daniel Jurgens (11):
virtio-pci: Expose generic device capability operations
virtio-pci: Expose object create and destroy API
virtio_net: Create virtio_net directory
virtio_net: Query and set flow filter caps
virtio_net: Create a FF group for ethtool steering
virtio_net: Implement layer 2 ethtool flow rules
virtio_net: Use existing classifier if possible
virtio_net: Implement IPv4 ethtool flow rules
virtio_net: Add support for IPv6 ethtool steering
virtio_net: Add support for TCP and UDP ethtool rules
virtio_net: Add get ethtool flow rules ops
MAINTAINERS | 2 +-
drivers/net/Makefile | 2 +-
drivers/net/virtio_net/Makefile | 8 +
drivers/net/virtio_net/virtio_net_ff.c | 1027 +++++++++++++++++
drivers/net/virtio_net/virtio_net_ff.h | 42 +
.../virtio_net_main.c} | 32 +
drivers/vfio/pci/virtio/migrate.c | 8 +-
drivers/virtio/virtio.c | 141 +++
drivers/virtio/virtio_pci_common.h | 1 -
drivers/virtio/virtio_pci_modern.c | 320 ++---
include/linux/virtio.h | 21 +
include/linux/virtio_admin.h | 101 ++
include/linux/virtio_pci_admin.h | 7 +-
include/uapi/linux/virtio_net_ff.h | 82 ++
include/uapi/linux/virtio_pci.h | 7 +-
15 files changed, 1660 insertions(+), 141 deletions(-)
create mode 100644 drivers/net/virtio_net/Makefile
create mode 100644 drivers/net/virtio_net/virtio_net_ff.c
create mode 100644 drivers/net/virtio_net/virtio_net_ff.h
rename drivers/net/{virtio_net.c => virtio_net/virtio_net_main.c} (99%)
create mode 100644 include/linux/virtio_admin.h
create mode 100644 include/uapi/linux/virtio_net_ff.h
--
2.50.1
