Yonglong Liu bc3781edce
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 <liuyonglong@huawei.com >
Signed-off-by: Peng Li <lipeng321@huawei.com >
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com >
Signed-off-by: David S. Miller <davem@davemloft.net >
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bc3781edce