net: hns: add attribute port-idx-in-ae in enet node.
authorYisen.Zhuang\(Zhuangyuzeng\) <Yisen.Zhuang@huawei.com>
Sat, 23 Apr 2016 09:05:07 +0000 (17:05 +0800)
committerDavid S. Miller <davem@davemloft.net>
Tue, 26 Apr 2016 05:09:17 +0000 (01:09 -0400)
commit406adee9a9fc38c11671f26180e694976f45237c
tree3457f7e855766f7701affb6c74efbe7fca0608e5
parenta542458cb7211a5e092c6a3cd6150404a5b1aa46
net: hns: add attribute port-idx-in-ae in enet node.

This patch parse port-idx-in-ae in enet node. In NIC mode of DSAF, all 6
PHYs of service DSAF are taken as ethernet ports to the CPU. The
port-idx-in-ae can be 0 to 5. Here is the diagram:
            +-----+---------------+
            |            CPU      |
            +-+-+-+---+-+-+-+-+-+-+
              |    |   | | | | | |
           debug debug   service
           port  port     port
           (0)   (0)     (0-5)

In Switch mode of DSAF, all 6 PHYs of service DSAF are taken as physical
ports connect to a LAN Switch while the CPU side assume itself have one
single NIC connect to this switch. In this case, the port-idx-in-ae will
be 0 only.
            +-----+-----+------+------+
            |                CPU      |
            +-+-+-+-+-+-+-+-+-+-+-+-+-+
              |    |     service| port(0)
            debug debug  +------------+
            port  port   |   switch   |
            (0)   (0)    +-+-+-+-+-+-++
                          | | | | | |
                         external port

when port-idx-in-ae is not exists, old attribute port-id will be used
(only for compatible purpose, not recommended to use port-id in new code).

Signed-off-by: Daode Huang <huangdaode@hisilicon.com>
Signed-off-by: Yisen Zhuang <yisen.zhuang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c
drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h
drivers/net/ethernet/hisilicon/hns/hns_enet.c
drivers/net/ethernet/hisilicon/hns/hns_enet.h