Eric Lee / smarc-fsl-linux-kernel

18 Feb, 2017

1 commit

04 Feb, 2017

2 commits

  • 11538d039   bridge: vlan dst_metadata hooks in ingress and egress paths ... Browse Code »

    - ingress hook:
    - if port is a tunnel port, use tunnel info in
    attached dst_metadata to map it to a local vlan
    - egress hook:
    - if port is a tunnel port, use tunnel info attached to
    vlan to set dst_metadata on the skb

    CC: Nikolay Aleksandrov
    Signed-off-by: Roopa Prabhu
    Signed-off-by: David S. Miller

    Roopa Prabhu
     
  • efa5356b0   bridge: per vlan dst_metadata netlink support ... Browse Code »

    This patch adds support to attach per vlan tunnel info dst
    metadata. This enables bridge driver to map vlan to tunnel_info
    at ingress and egress. It uses the kernel dst_metadata infrastructure.

    The initial use case is vlan to vni bridging, but the api is generic
    to extend to any tunnel_info in the future:
    - Uapi to configure/unconfigure/dump per vlan tunnel data
    - netlink functions to configure vlan and tunnel_info mapping
    - Introduces bridge port flag BR_LWT_VLAN to enable attach/detach
    dst_metadata to bridged packets on ports. off by default.
    - changes to existing code is mainly refactor some existing vlan
    handling netlink code + hooks for new vlan tunnel code
    - I have kept the vlan tunnel code isolated in separate files.
    - most of the netlink vlan tunnel code is handling of vlan-tunid
    ranges (follows the vlan range handling code). To conserve space
    vlan-tunid by default are always dumped in ranges if applicable.

    Use case:
    example use for this is a vxlan bridging gateway or vtep
    which maps vlans to vn-segments (or vnis).

    iproute2 example (patched and pruned iproute2 output to just show
    relevant fdb entries):
    example shows same host mac learnt on two vni's and
    vlan 100 maps to vni 1000, vlan 101 maps to vni 1001

    before (netdev per vni):
    $bridge fdb show | grep "00:02:00:00:00:03"
    00:02:00:00:00:03 dev vxlan1001 vlan 101 master bridge
    00:02:00:00:00:03 dev vxlan1001 dst 12.0.0.8 self
    00:02:00:00:00:03 dev vxlan1000 vlan 100 master bridge
    00:02:00:00:00:03 dev vxlan1000 dst 12.0.0.8 self

    after this patch with collect metdata in bridged mode (single netdev):
    $bridge fdb show | grep "00:02:00:00:00:03"
    00:02:00:00:00:03 dev vxlan0 vlan 101 master bridge
    00:02:00:00:00:03 dev vxlan0 src_vni 1001 dst 12.0.0.8 self
    00:02:00:00:00:03 dev vxlan0 vlan 100 master bridge
    00:02:00:00:00:03 dev vxlan0 src_vni 1000 dst 12.0.0.8 self

    CC: Nikolay Aleksandrov
    Signed-off-by: Roopa Prabhu
    Signed-off-by: David S. Miller

    Roopa Prabhu