On Mon, Sep 03, 2018 at 07:13:15PM +0300, Arseny Maslennikov wrote: > Some InfiniBand network devices have multiple ports on the same PCI > function. This initializes the `dev_port' sysfs field of those > network interfaces with their port number. > > Prior to this the kernel erroneously used the `dev_id' sysfs > field of those network interfaces to convey the port number to userspace. > > The use of `dev_id' was considered correct until Linux 3.15, > when another field, `dev_port', was defined for this particular > purpose and `dev_id' was reserved for distinguishing stacked ifaces > (e.g: VLANs) with the same hardware address as their parent device. > > Similar fixes to net/mlx4_en and many other drivers, which started > exporting this information through `dev_id' before 3.15, were accepted > into the kernel 4 years ago. > See 76a066f2a2a0 (`net/mlx4_en: Expose port number through sysfs'). > > Signed-off-by: Arseny Maslennikov <ar@xxxxxxxxx> > --- > drivers/infiniband/ulp/ipoib/ipoib_main.c | 2 ++ > 1 file changed, 2 insertions(+) > Thanks, Reviewed-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
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