diff options
| author | Lijun Pan <lijunp213@gmail.com> | 2021-04-13 11:31:44 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-04-14 00:48:44 +0300 |
| commit | 334c4241472916851d97aae209aedf1927ec84e3 (patch) | |
| tree | f036b5d61b6a426cbefb18f7c56d3c995d476fbc /drivers/net/ethernet/ibm | |
| parent | 314332023b1f095fb24e230e60b50aff981943c3 (diff) | |
| download | linux-334c4241472916851d97aae209aedf1927ec84e3.tar.xz | |
ibmvnic: improve failover sysfs entry
The current implementation relies on H_IOCTL call to issue a
H_SESSION_ERR_DETECTED command to let the hypervisor to send a failover
signal. However, it may not work if there is no backup device or if
the vnic is already in error state,
e.g., "ibmvnic 30000003 env3: rx buffer returned with rc 6".
Add a last resort, that is to schedule a failover reset via CRQ command.
Signed-off-by: Lijun Pan <lijunp213@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/ibm')
| -rw-r--r-- | drivers/net/ethernet/ibm/ibmvnic.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index ee9bf18c597f..0961d36833d5 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -5503,7 +5503,7 @@ static ssize_t failover_store(struct device *dev, struct device_attribute *attr, if (rc) { netdev_err(netdev, "Couldn't retrieve session token, rc %ld\n", rc); - return -EINVAL; + goto last_resort; } session_token = (__be64)retbuf[0]; @@ -5511,15 +5511,17 @@ static ssize_t failover_store(struct device *dev, struct device_attribute *attr, be64_to_cpu(session_token)); rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address, H_SESSION_ERR_DETECTED, session_token, 0, 0); - if (rc) { - netdev_err(netdev, "Client initiated failover failed, rc %ld\n", + if (rc) + netdev_err(netdev, + "H_VIOCTL initiated failover failed, rc %ld\n", rc); - return -EINVAL; - } + +last_resort: + netdev_dbg(netdev, "Trying to send CRQ_CMD, the last resort\n"); + ibmvnic_reset(adapter, VNIC_RESET_FAILOVER); return count; } - static DEVICE_ATTR_WO(failover); static unsigned long ibmvnic_get_desired_dma(struct vio_dev *vdev) |