Re: [PATCH net-next v3 02/15] mptcp: pm: userspace: flags: clearer msg if no remote addr

[Simon Horman]

On Fri, Feb 07, 2025 at 02:59:20PM +0100, Matthieu Baerts (NGI0) wrote:
> Since its introduction in commit 892f396c8e68 ("mptcp: netlink: issue
> MP_PRIO signals from userspace PMs"), it was mandatory to specify the
> remote address, because of the 'if (rem->addr.family == AF_UNSPEC)'
> check done later one.
> 
> In theory, this attribute can be optional, but it sounds better to be
> precise to avoid sending the MP_PRIO on the wrong subflow, e.g. if there
> are multiple subflows attached to the same local ID. This can be relaxed
> later on if there is a need to act on multiple subflows with one
> command.
> 
> For the moment, the check to see if attr_rem is NULL can be removed,
> because mptcp_pm_parse_entry() will do this check as well, no need to do
> that differently here.
> 
> Reviewed-by: Geliang Tang <geliang@xxxxxxxxxx>
> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@xxxxxxxxxx>

Reviewed-by: Simon Horman <horms@xxxxxxxxxx>