Re: [PATCH net] net: hsr: enable promiscuous mode on interlink port with fwd offload

[Simon Horman]

On Tue, Sep 08, 2026 at 02:38:56PM +0530, MD Danish Anwar wrote:
> hsr_portdev_setup() skips promiscuous mode on non-master ports when
> hsr->fwd_offloaded is set. fwd_offloaded is derived only from the ring
> slaves' NETIF_F_HW_HSR_FWD bit, so this also skips it for the interlink
> port, which never gets forwarding offload. Without promiscuous mode,
> the interlink NIC drops unicast frames addressed to hsr_dev's MAC
> (e.g. SAN traffic to the RedBox), breaking RedBox whenever the ring is
> HW-offloaded.
> 
> Fixes: 5055cccfc2d1 ("net: hsr: Provide RedBox support (HSR-SAN)")
> Signed-off-by: MD Danish Anwar <danishanwar@xxxxxx>

Reviewed-by: Simon Horman <horms@xxxxxxxxxx>