Re: [PATCH net-next v4 2/8] switchdev: mrp: Extend ring_role_mrp and in_role_mrp
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: 2021-02-17 16:10:49
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On Wed, Feb 17, 2021 at 04:58:45PM +0100, Horatiu Vultur wrote:
quoted
If a driver implements full MRP offload for a ring/interconnect manager/automanager, should it return -EOPNOTSUPP when sw_backup=false?In that case it should return 0. So if the driver can: - fully support MRP, when sw_backup = false, return 0. Then end of story. - partially support MRP, when sw_backup = false, return -EOPNOTSUPP, when sw_backup = true, return 0. - no support at all, return -EOPNOTSUPP.
Damn, I asked the wrong question. I meant to ask about what it should return when sw_backup=true. But you answered anyway that if it returns 0 when sw_backup=false, it can simply not deal with the case where sw_backup=true, because that is never supposed to happen.