Commit eb110410 authored by Thomas Falcon's avatar Thomas Falcon Committed by David S. Miller
Browse files

ibmvnic: Fix partial success login retries



In its current state, the driver will handle backing device
login in a loop for a certain number of retries while the
device returns a partial success, indicating that the driver
may need to try again using a smaller number of resources.

The variable it checks to continue retrying may change
over the course of operations, resulting in reallocation
of resources but exits without sending the login attempt.
Guard against this by introducing a boolean variable that
will retain the state indicating that the driver needs to
reattempt login with backing device firmware.
Signed-off-by: default avatarThomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d2f30f51
......@@ -796,9 +796,11 @@ static int ibmvnic_login(struct net_device *netdev)
struct ibmvnic_adapter *adapter = netdev_priv(netdev);
unsigned long timeout = msecs_to_jiffies(30000);
int retry_count = 0;
bool retry;
int rc;
do {
retry = false;
if (retry_count > IBMVNIC_MAX_QUEUES) {
netdev_warn(netdev, "Login attempts exceeded\n");
return -1;
......@@ -822,6 +824,9 @@ static int ibmvnic_login(struct net_device *netdev)
retry_count++;
release_sub_crqs(adapter, 1);
retry = true;
netdev_dbg(netdev,
"Received partial success, retrying...\n");
adapter->init_done_rc = 0;
reinit_completion(&adapter->init_done);
send_cap_queries(adapter);
......@@ -849,7 +854,7 @@ static int ibmvnic_login(struct net_device *netdev)
netdev_warn(netdev, "Adapter login failed\n");
return -1;
}
} while (adapter->init_done_rc == PARTIALSUCCESS);
} while (retry);
/* handle pending MAC address changes after successful login */
if (adapter->mac_change_pending) {
......
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