diff options
| author | Jian Shen <shenjian15@huawei.com> | 2020-03-05 02:47:53 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-03-05 21:04:50 +0100 |
| commit | 68e1006f618e509fc7869259fe83ceec4a95dac3 (patch) | |
| tree | 838a558d49d77afba85b2c87fb7b9c5f17f14d17 /drivers/net/ethernet/sfc/tx.c | |
| parent | slip: make slhc_compress() more robust against malicious packets (diff) | |
| download | linux-68e1006f618e509fc7869259fe83ceec4a95dac3.tar.xz linux-68e1006f618e509fc7869259fe83ceec4a95dac3.zip | |
net: hns3: fix a not link up issue when fibre port supports autoneg
When fibre port supports auto-negotiation, the IMP(Intelligent
Management Process) processes the speed of auto-negotiation
and the user's speed separately.
For below case, the port will get a not link up problem.
step 1: disables auto-negotiation and sets speed to A, then
the driver's MAC speed will be updated to A.
step 2: enables auto-negotiation and MAC gets negotiated
speed B, then the driver's MAC speed will be updated to B
through querying in periodical task.
step 3: MAC gets new negotiated speed A.
step 4: disables auto-negotiation and sets speed to B before
periodical task query new MAC speed A, the driver will ignore
the speed configuration.
This patch fixes it by skipping speed and duplex checking when
fibre port supports auto-negotiation.
Fixes: 22f48e24a23d ("net: hns3: add autoneg and change speed support for fibre port")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/sfc/tx.c')
0 files changed, 0 insertions, 0 deletions