net: hns: fix to intimate the link-status change by adding LF/RF method
authorDaode Huang <huangdaode@hisilicon.com>
Wed, 9 Nov 2016 18:13:52 +0000 (18:13 +0000)
committerDavid S. Miller <davem@davemloft.net>
Thu, 10 Nov 2016 16:45:37 +0000 (11:45 -0500)
commit20b3385aaab5af5127fa957bcfcaf0bd92b61447
tree779d8a29d6515ddf23ec5437f26b333fd1d4bbed
parent28b3012400ad349ad633187c7e6e37352a22dd6e
net: hns: fix to intimate the link-status change by adding LF/RF method

In current scenario, when the interface is disabled we reset the XGMAC
RX/TX functionality. This operation does not affects the PHY layer/SFP
and which appears UP to the remote end(this behaviour is unlike GMAC).
The result is remote end keeps on sending the packets which gets partly
processed by XMAC and dropped. Since these are partly processed these
appears as errored packets in the packet counter statistics.

This patch fixes this behaviour and adds local-fault and remote-fault
functionality which can be used to intimate the remote peer whenever
the state of the interface changes. This patch also removes the
existing hns_dsaf_xge_core_srst_by_port function which was being used
to reset the RX/TX functionality at XGE Core.

Reported-by: Jun He <hjat2005@huawei.com>
Signed-off-by: Daode Huang <huangdaode@hisilicon.com>
Reviewed-by: Yisen Zhuang <yisen.zhuang@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
drivers/net/ethernet/hisilicon/hns/hns_dsaf_misc.c
drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h
drivers/net/ethernet/hisilicon/hns/hns_dsaf_xgmac.c
drivers/net/ethernet/hisilicon/hns/hns_dsaf_xgmac.h