From ea870bf93c5cd3635a07a0570cb7fe61436b0c3d Mon Sep 17 00:00:00 2001 From: Kejian Yan Date: Thu, 29 Sep 2016 18:09:13 +0100 Subject: [PATCH] net: hns: fix port not available after testing loopback After running command "ethtool -t eth0", eth0 can not be connected to network. It is caused by the changing the inner loopback register and this register cannot be changed when hns connected to network. The routine of setting this register needs to be removed and using promisc mode to let the packet looped back pass by dsaf mode. Reported-by: Jun He Signed-off-by: Kejian Yan Reviewed-by: Yisen Zhaung Signed-off-by: Salil Mehta Signed-off-by: Doug Ledford --- drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c | 3 --- drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c | 10 ---------- drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h | 1 - drivers/net/ethernet/hisilicon/hns/hns_ethtool.c | 7 +++++++ 4 files changed, 7 insertions(+), 14 deletions(-) diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c b/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c index e28d960997af..e0f9cdc54f40 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_ae_adapt.c @@ -678,9 +678,6 @@ static int hns_ae_config_loopback(struct hnae_handle *handle, ret = -EINVAL; } - if (!ret) - hns_dsaf_set_inner_lb(mac_cb->dsaf_dev, mac_cb->mac_id, en); - return ret; } diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c index 9283bc60bb24..827d8fb72370 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c @@ -768,16 +768,6 @@ void hns_dsaf_set_promisc_mode(struct dsaf_device *dsaf_dev, u32 en) DSAF_CFG_MIX_MODE_S, !!en); } -void hns_dsaf_set_inner_lb(struct dsaf_device *dsaf_dev, u32 mac_id, u32 en) -{ - if (AE_IS_VER1(dsaf_dev->dsaf_ver) || - dsaf_dev->mac_cb[mac_id]->mac_type == HNAE_PORT_DEBUG) - return; - - dsaf_set_dev_bit(dsaf_dev, DSAFV2_SERDES_LBK_0_REG + 4 * mac_id, - DSAFV2_SERDES_LBK_EN_B, !!en); -} - /** * hns_dsaf_tbl_stat_en - tbl * @dsaf_id: dsa fabric id diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h index 35df187e66f1..c494fc52be74 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h @@ -466,6 +466,5 @@ void hns_dsaf_get_rx_mac_pause_en(struct dsaf_device *dsaf_dev, int mac_id, u32 *en); int hns_dsaf_set_rx_mac_pause_en(struct dsaf_device *dsaf_dev, int mac_id, u32 en); -void hns_dsaf_set_inner_lb(struct dsaf_device *dsaf_dev, u32 mac_id, u32 en); #endif /* __HNS_DSAF_MAIN_H__ */ diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c index ab33487a5321..fa91ce32199e 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c @@ -342,6 +342,13 @@ static int __lb_setup(struct net_device *ndev, break; } + if (!ret) { + if (loop == MAC_LOOP_NONE) + h->dev->ops->set_promisc_mode( + h, ndev->flags & IFF_PROMISC); + else + h->dev->ops->set_promisc_mode(h, 1); + } return ret; } -- 2.20.1