# Re: \[PATCH net-next v4 05/10\] bridge: cfm: Kernel space implementation of CFM. CCM frame TX added.

- From: Nikolay Aleksandrov \<hidden\>
- Date: 2020-10-09 21:50:04 
- List: netdev
- Page: https://ratatoskr.run/netdev/2020/10/6135673
- Thread: https://ratatoskr.run/netdev/2020/10/6135294/t.md

```text
On Fri, 2020-10-09 at 14:35 +0000, Henrik Bjoernlund wrote:
> This is the second commit of the implementation of the CFM protocol
> according to 802.1Q section 12.14.
> 
> Functionality is extended with CCM frame transmission.
> 
> Interface is extended with these functions:
> br_cfm_cc_rdi_set()
> br_cfm_cc_ccm_tx()
> br_cfm_cc_config_set()
> 
> A MEP Continuity Check feature can be configured by
> br_cfm_cc_config_set()
>     The Continuity Check parameters can be configured to be used when
>     transmitting CCM.
> 
> A MEP can be configured to start or stop transmission of CCM frames by
> br_cfm_cc_ccm_tx()
>     The CCM will be transmitted for a selected period in seconds.
>     Must call this function before timeout to keep transmission alive.
> 
> A MEP transmitting CCM can be configured with inserted RDI in PDU by
> br_cfm_cc_rdi_set()
> 
> Signed-off-by: Henrik Bjoernlund  <redacted>
> Reviewed-by: Horatiu Vultur  <horatiu.vultur@microchip.com>
> ---
>  include/uapi/linux/cfm_bridge.h |  39 ++++-
>  net/bridge/br_cfm.c             | 284 ++++++++++++++++++++++++++++++++
>  net/bridge/br_private_cfm.h     |  54 ++++++
>  3 files changed, 376 insertions(+), 1 deletion(-)
> 

Acked-by: Nikolay Aleksandrov <redacted>

```