Hi Jamal, On 2020-11-19 0:11, Jamal Hadi Salim wrote: > The 11/17/2020 14:30, Xiaoliang Yang wrote: >> EXTERNAL EMAIL: Do not click links or open attachments unless you >> know the content is safe >> >> This patch introduce a redundancy flow action to implement frame >> replication and elimination for reliability, which is defined in IEEE >> P802.1CB. >> >> There are two modes for redundancy action: generator and recover mode. >> Generator mode add redundancy tag and replicate the frame to >> different egress ports. Recover mode drop the repeat frames and >> remove redundancy tag from the frame. >> >> Below is the setting example in user space: >> > tc qdisc add dev swp0 clsact >> > tc filter add dev swp0 ingress protocol 802.1Q flower \ >> skip_hw dst_mac 00:01:02:03:04:05 vlan_id 1 \ >> action redundancy generator split dev swp1 dev swp2 >> >> > tc filter add dev swp0 ingress protocol 802.1Q flower >> skip_hw dst_mac 00:01:02:03:04:06 vlan_id 1 \ >> action redundancy recover >>
> Please CC _all_ maintainers for best feedback (+Cc Cong) and it is > unnecessary to cc lists like linux-kernel (removed). > > We already have mirroring + ability to add/pop tags. > Would the following not work? > > Example, generator mode: > tc filter add dev swp0 ingress protocol 802.1Q flower \ action vlan push id > 789 protocol 802.1q \ action mirred egress mirror dev swp1 \ action mirred > egress mirror dev swp2 > > recovery mode: > tc filter add dev swp0 ingress protocol 802.1Q flower \ skip_hw dst_mac > 00:01:02:03:04:06 vlan_id 1 \ actopm vlan pop > Action mirred only copy the packets and forward to different egress ports. 802.1CB need to add a redundancy tag before forward. Recovery mode need pop the redundancy tag and check sequence in R-TAG, drop the repeat frames. So I added a new action to do this. Thanks, Xiaoliang
