mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-26 22:24:09 +08:00
ibmvnic: merge do_change_param_reset into do_reset
Commit b27507bb59 ("net/ibmvnic: unlock rtnl_lock in reset so
linkwatch_event can run") introduced do_change_param_reset function to
solve the rtnl lock issue. Majority of the code in do_change_param_reset
duplicates do_reset. Also, we can handle the rtnl lock issue in do_reset
itself. Hence merge do_change_param_reset back into do_reset to clean up
the code.
Signed-off-by: Lijun Pan <ljp@linux.ibm.com>
Link: https://lore.kernel.org/r/20210106213514.76027-1-ljp@linux.ibm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Lijun Pan
Jakub Kicinski
parent
09b5b5fb39
commit
3f5ec374ae
@ -1925,92 +1925,6 @@ static int ibmvnic_set_mac(struct net_device *netdev, void *p)
|
||||
return rc;
|
||||
}
|
||||
|
||||
/**
|
||||
* do_change_param_reset returns zero if we are able to keep processing reset
|
||||
* events, or non-zero if we hit a fatal error and must halt.
|
||||
*/
|
||||
static int do_change_param_reset(struct ibmvnic_adapter *adapter,
|
||||
struct ibmvnic_rwi *rwi,
|
||||
u32 reset_state)
|
||||
{
|
||||
struct net_device *netdev = adapter->netdev;
|
||||
int i, rc;
|
||||
|
||||
netdev_dbg(adapter->netdev, "Change param resetting driver (%d)\n",
|
||||
rwi->reset_reason);
|
||||
|
||||
netif_carrier_off(netdev);
|
||||
adapter->reset_reason = rwi->reset_reason;
|
||||
|
||||
ibmvnic_cleanup(netdev);
|
||||
|
||||
if (reset_state == VNIC_OPEN) {
|
||||
rc = __ibmvnic_close(netdev);
|
||||
if (rc)
|
||||
goto out;
|
||||
}
|
||||
|
||||
release_resources(adapter);
|
||||
release_sub_crqs(adapter, 1);
|
||||
release_crq_queue(adapter);
|
||||
|
||||
adapter->state = VNIC_PROBED;
|
||||
|
||||
rc = init_crq_queue(adapter);
|
||||
|
||||
if (rc) {
|
||||
netdev_err(adapter->netdev,
|
||||
"Couldn't initialize crq. rc=%d\n", rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
rc = ibmvnic_reset_init(adapter, true);
|
||||
if (rc) {
|
||||
rc = IBMVNIC_INIT_FAILED;
|
||||
goto out;
|
||||
}
|
||||
|
||||
/* If the adapter was in PROBE state prior to the reset,
|
||||
* exit here.
|
||||
*/
|
||||
if (reset_state == VNIC_PROBED)
|
||||
goto out;
|
||||
|
||||
rc = ibmvnic_login(netdev);
|
||||
if (rc) {
|
||||
goto out;
|
||||
}
|
||||
|
||||
rc = init_resources(adapter);
|
||||
if (rc)
|
||||
goto out;
|
||||
|
||||
ibmvnic_disable_irqs(adapter);
|
||||
|
||||
adapter->state = VNIC_CLOSED;
|
||||
|
||||
if (reset_state == VNIC_CLOSED)
|
||||
return 0;
|
||||
|
||||
rc = __ibmvnic_open(netdev);
|
||||
if (rc) {
|
||||
rc = IBMVNIC_OPEN_FAILED;
|
||||
goto out;
|
||||
}
|
||||
|
||||
/* refresh device's multicast list */
|
||||
ibmvnic_set_multi(netdev);
|
||||
|
||||
/* kick napi */
|
||||
for (i = 0; i < adapter->req_rx_queues; i++)
|
||||
napi_schedule(&adapter->napi[i]);
|
||||
|
||||
out:
|
||||
if (rc)
|
||||
adapter->state = reset_state;
|
||||
return rc;
|
||||
}
|
||||
|
||||
/**
|
||||
* do_reset returns zero if we are able to keep processing reset events, or
|
||||
* non-zero if we hit a fatal error and must halt.
|
||||
@ -2028,7 +1942,11 @@ static int do_reset(struct ibmvnic_adapter *adapter,
|
||||
adapter->state, adapter->failover_pending,
|
||||
rwi->reset_reason, reset_state);
|
||||
|
||||
rtnl_lock();
|
||||
adapter->reset_reason = rwi->reset_reason;
|
||||
/* requestor of VNIC_RESET_CHANGE_PARAM already has the rtnl lock */
|
||||
if (!(adapter->reset_reason == VNIC_RESET_CHANGE_PARAM))
|
||||
rtnl_lock();
|
||||
|
||||
/*
|
||||
* Now that we have the rtnl lock, clear any pending failover.
|
||||
* This will ensure ibmvnic_open() has either completed or will
|
||||
@ -2038,7 +1956,6 @@ static int do_reset(struct ibmvnic_adapter *adapter,
|
||||
adapter->failover_pending = false;
|
||||
|
||||
netif_carrier_off(netdev);
|
||||
adapter->reset_reason = rwi->reset_reason;
|
||||
|
||||
old_num_rx_queues = adapter->req_rx_queues;
|
||||
old_num_tx_queues = adapter->req_tx_queues;
|
||||
@ -2050,25 +1967,37 @@ static int do_reset(struct ibmvnic_adapter *adapter,
|
||||
if (reset_state == VNIC_OPEN &&
|
||||
adapter->reset_reason != VNIC_RESET_MOBILITY &&
|
||||
adapter->reset_reason != VNIC_RESET_FAILOVER) {
|
||||
adapter->state = VNIC_CLOSING;
|
||||
if (adapter->reset_reason == VNIC_RESET_CHANGE_PARAM) {
|
||||
rc = __ibmvnic_close(netdev);
|
||||
if (rc)
|
||||
goto out;
|
||||
} else {
|
||||
adapter->state = VNIC_CLOSING;
|
||||
|
||||
/* Release the RTNL lock before link state change and
|
||||
* re-acquire after the link state change to allow
|
||||
* linkwatch_event to grab the RTNL lock and run during
|
||||
* a reset.
|
||||
*/
|
||||
rtnl_unlock();
|
||||
rc = set_link_state(adapter, IBMVNIC_LOGICAL_LNK_DN);
|
||||
rtnl_lock();
|
||||
if (rc)
|
||||
goto out;
|
||||
/* Release the RTNL lock before link state change and
|
||||
* re-acquire after the link state change to allow
|
||||
* linkwatch_event to grab the RTNL lock and run during
|
||||
* a reset.
|
||||
*/
|
||||
rtnl_unlock();
|
||||
rc = set_link_state(adapter, IBMVNIC_LOGICAL_LNK_DN);
|
||||
rtnl_lock();
|
||||
if (rc)
|
||||
goto out;
|
||||
|
||||
if (adapter->state != VNIC_CLOSING) {
|
||||
rc = -1;
|
||||
goto out;
|
||||
if (adapter->state != VNIC_CLOSING) {
|
||||
rc = -1;
|
||||
goto out;
|
||||
}
|
||||
|
||||
adapter->state = VNIC_CLOSED;
|
||||
}
|
||||
}
|
||||
|
||||
adapter->state = VNIC_CLOSED;
|
||||
if (adapter->reset_reason == VNIC_RESET_CHANGE_PARAM) {
|
||||
release_resources(adapter);
|
||||
release_sub_crqs(adapter, 1);
|
||||
release_crq_queue(adapter);
|
||||
}
|
||||
|
||||
if (adapter->reset_reason != VNIC_RESET_NON_FATAL) {
|
||||
@ -2077,7 +2006,9 @@ static int do_reset(struct ibmvnic_adapter *adapter,
|
||||
*/
|
||||
adapter->state = VNIC_PROBED;
|
||||
|
||||
if (adapter->reset_reason == VNIC_RESET_MOBILITY) {
|
||||
if (adapter->reset_reason == VNIC_RESET_CHANGE_PARAM) {
|
||||
rc = init_crq_queue(adapter);
|
||||
} else if (adapter->reset_reason == VNIC_RESET_MOBILITY) {
|
||||
rc = ibmvnic_reenable_crq_queue(adapter);
|
||||
release_sub_crqs(adapter, 1);
|
||||
} else {
|
||||
@ -2116,7 +2047,11 @@ static int do_reset(struct ibmvnic_adapter *adapter,
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (adapter->req_rx_queues != old_num_rx_queues ||
|
||||
if (adapter->reset_reason == VNIC_RESET_CHANGE_PARAM) {
|
||||
rc = init_resources(adapter);
|
||||
if (rc)
|
||||
goto out;
|
||||
} else if (adapter->req_rx_queues != old_num_rx_queues ||
|
||||
adapter->req_tx_queues != old_num_tx_queues ||
|
||||
adapter->req_rx_add_entries_per_subcrq !=
|
||||
old_num_rx_slots ||
|
||||
@ -2181,7 +2116,9 @@ out:
|
||||
/* restore the adapter state if reset failed */
|
||||
if (rc)
|
||||
adapter->state = reset_state;
|
||||
rtnl_unlock();
|
||||
/* requestor of VNIC_RESET_CHANGE_PARAM should still hold the rtnl lock */
|
||||
if (!(adapter->reset_reason == VNIC_RESET_CHANGE_PARAM))
|
||||
rtnl_unlock();
|
||||
|
||||
netdev_dbg(adapter->netdev, "[S:%d FOP:%d] Reset done, rc %d\n",
|
||||
adapter->state, adapter->failover_pending, rc);
|
||||
@ -2312,10 +2249,7 @@ static void __ibmvnic_reset(struct work_struct *work)
|
||||
}
|
||||
spin_unlock_irqrestore(&adapter->state_lock, flags);
|
||||
|
||||
if (rwi->reset_reason == VNIC_RESET_CHANGE_PARAM) {
|
||||
/* CHANGE_PARAM requestor holds rtnl_lock */
|
||||
rc = do_change_param_reset(adapter, rwi, reset_state);
|
||||
} else if (adapter->force_reset_recovery) {
|
||||
if (adapter->force_reset_recovery) {
|
||||
/*
|
||||
* Since we are doing a hard reset now, clear the
|
||||
* failover_pending flag so we don't ignore any
|
||||
|
||||
Loading…
Reference in New Issue
Block a user