From: Yonglong Liu Date: Fri, 28 Jun 2019 11:50:12 +0000 (+0800) Subject: net: hns3: add Asym Pause support to fix autoneg problem X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=bc3781edcea017aa1a29abd953b776cdba298ce2;p=openwrt%2Fstaging%2Fblogic.git net: hns3: add Asym Pause support to fix autoneg problem Local device and link partner config auto-negotiation on both, local device config pause frame use as: rx on/tx off, link partner config pause frame use as: rx off/tx on. We except the result is: Local device: Autonegotiate: on RX: on TX: off RX negotiated: on TX negotiated: off Link partner: Autonegotiate: on RX: off TX: on RX negotiated: off TX negotiated: on But actually, the result of Local device and link partner is both: Autonegotiate: on RX: off TX: off RX negotiated: off TX negotiated: off The root cause is that the supported flag is has only Pause, reference to the function genphy_config_advert(): static int genphy_config_advert(struct phy_device *phydev) { ... linkmode_and(phydev->advertising, phydev->advertising, phydev->supported); ... } The pause frame use of link partner is rx off/tx on, so its advertising only set the bit Asym_Pause, and the supported is only set the bit Pause, so the result of linkmode_and(), is rx off/tx off. This patch adds Asym_Pause to the supported flag to fix it. Signed-off-by: Yonglong Liu Signed-off-by: Peng Li Signed-off-by: Huazhong Tan Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c index b2faebd44d02..896605f705c1 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c @@ -1061,6 +1061,7 @@ static void hclge_parse_copper_link_mode(struct hclge_dev *hdev, linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, supported); linkmode_set_bit(ETHTOOL_LINK_MODE_TP_BIT, supported); linkmode_set_bit(ETHTOOL_LINK_MODE_Pause_BIT, supported); + linkmode_set_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, supported); } static void hclge_parse_link_mode(struct hclge_dev *hdev, u8 speed_ability) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mdio.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mdio.c index d906d09bee72..abb1b438564e 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mdio.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mdio.c @@ -224,6 +224,13 @@ int hclge_mac_connect_phy(struct hnae3_handle *handle) linkmode_and(phydev->supported, phydev->supported, mask); linkmode_copy(phydev->advertising, phydev->supported); + /* supported flag is Pause and Asym Pause, but default advertising + * should be rx on, tx on, so need clear Asym Pause in advertising + * flag + */ + linkmode_clear_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, + phydev->advertising); + return 0; }