net: hns3: using user configure after hardware reset

[ Upstream commit 05eb60e9648cca0beeebdbcd263b599fb58aee48 ]

When a reset occurring, it's supposed to recover user's configuration.
Currently, the port info(speed, duplex and autoneg) is stored in hclge_mac
and will be scheduled updated. Consider the case that reset was happened
consecutively. During the first reset, the port info is configured with
a temporary value cause the PHY is reset and looking for best link config.
Second reset start and use pervious configuration which is not the user's.
The specific process is as follows:

+------+               +----+                +----+
| USER |               | PF |                | HW |
+---+--+               +-+--+                +-+--+
    |  ethtool --reset   |                     |
    +------------------->|    reset command    |
    |  ethtool --reset   +-------------------->|
    +------------------->|                     +---+
    |                    +---+                 |   |
    |                    |   |reset currently  |   | HW RESET
    |                    |   |and wait to do   |   |
    |                    |<--+                 |   |
    |                    | send pervious cfg   |<--+
    |                    | (1000M FULL AN_ON)  |
    |                    +-------------------->|
    |                    | read cfg(time task) |
    |                    | (10M HALF AN_OFF)   +---+
    |                    |<--------------------+   | cfg take effect
    |                    |    reset command    |<--+
    |                    +-------------------->|
    |                    |                     +---+
    |                    | send pervious cfg   |   | HW RESET
    |                    | (10M HALF AN_OFF)   |<--+
    |                    +-------------------->|
    |                    | read cfg(time task) |
    |                    |  (10M HALF AN_OFF)  +---+
    |                    |<--------------------+   | cfg take effect
    |                    |                     |   |
    |                    | read cfg(time task) |<--+
    |                    |  (10M HALF AN_OFF)  |
    |                    |<--------------------+
    |                    |                     |
    v                    v                     v

To avoid aboved situation, this patch introduced req_speed, req_duplex,
req_autoneg to store user's configuration and it only be used after
hardware reset and to recover user's configuration

Fixes: f5f2b3e4dcc0 ("net: hns3: add support for imp-controlled PHYs")
Signed-off-by: Peiyang Wang <wangpeiyang1@huawei.com>
Signed-off-by: Jijie Shao <shaojijie@huawei.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index dfd0c5f4cb9f554e28e98dc9ac7e1997635d83be..4398de42c915724b105f453c56b44acd2c1a8db8 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -1526,6 +1526,9 @@ static int hclge_configure(struct hclge_dev *hdev)
                        cfg.default_speed, ret);
                return ret;
        }
+       hdev->hw.mac.req_speed = hdev->hw.mac.speed;
+       hdev->hw.mac.req_autoneg = AUTONEG_ENABLE;
+       hdev->hw.mac.req_duplex = DUPLEX_FULL;
 
        hclge_parse_link_mode(hdev, cfg.speed_ability);
 
@@ -3331,9 +3334,9 @@ hclge_set_phy_link_ksettings(struct hnae3_handle *handle,
                return ret;
        }
 
-       hdev->hw.mac.autoneg = cmd->base.autoneg;
-       hdev->hw.mac.speed = cmd->base.speed;
-       hdev->hw.mac.duplex = cmd->base.duplex;
+       hdev->hw.mac.req_autoneg = cmd->base.autoneg;
+       hdev->hw.mac.req_speed = cmd->base.speed;
+       hdev->hw.mac.req_duplex = cmd->base.duplex;
        linkmode_copy(hdev->hw.mac.advertising, cmd->link_modes.advertising);
 
        return 0;
@@ -3366,9 +3369,9 @@ static int hclge_tp_port_init(struct hclge_dev *hdev)
        if (!hnae3_dev_phy_imp_supported(hdev))
                return 0;
 
-       cmd.base.autoneg = hdev->hw.mac.autoneg;
-       cmd.base.speed = hdev->hw.mac.speed;
-       cmd.base.duplex = hdev->hw.mac.duplex;
+       cmd.base.autoneg = hdev->hw.mac.req_autoneg;
+       cmd.base.speed = hdev->hw.mac.req_speed;
+       cmd.base.duplex = hdev->hw.mac.req_duplex;
        linkmode_copy(cmd.link_modes.advertising, hdev->hw.mac.advertising);
 
        return hclge_set_phy_link_ksettings(&hdev->vport->nic, &cmd);

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
index 7bc2049b723daa387aba2a083dc526a2e68083ba..6a6b41ef08baf82b8a0736fae6ad32d3f35e1fd9 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
@@ -263,11 +263,14 @@ struct hclge_mac {
        u8 media_type;  /* port media type, e.g. fibre/copper/backplane */
        u8 mac_addr[ETH_ALEN];
        u8 autoneg;
+       u8 req_autoneg;
        u8 duplex;
+       u8 req_duplex;
        u8 support_autoneg;
        u8 speed_type;  /* 0: sfp speed, 1: active speed */
        u8 lane_num;
        u32 speed;
+       u32 req_speed;
        u32 max_speed;
        u32 speed_ability; /* speed ability supported by current media */
        u32 module_type; /* sub media type, e.g. kr/cr/sr/lr */