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Revert ibmvnic merge do_change_param_reset into do_reset

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This reverts commit 16b5f5ce35
where it restructures do_reset. There are patches being tested that
would require major rework if this is committed first.

We will resend this after the other patches have been applied.

Signed-off-by: Dany Madden <drt@linux.ibm.com>
Link: https://lore.kernel.org/r/20201106191745.1679846-1-drt@linux.ibm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Dany Madden 2020-11-06 14:17:45 -05:00 committed by Jakub Kicinski
parent 3b4202a470
commit 9f32c27eb4
1 changed files with 104 additions and 43 deletions
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147
drivers/net/ethernet/ibm/ibmvnic.c
View File

@ -1826,6 +1826,86 @@ 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)
return rc;
}
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)
return IBMVNIC_INIT_FAILED;
/* If the adapter was in PROBE state prior to the reset,
* exit here.
*/
if (reset_state == VNIC_PROBED)
return 0;
rc = ibmvnic_login(netdev);
if (rc) {
adapter->state = reset_state;
return rc;
}
rc = init_resources(adapter);
if (rc)
return rc;
ibmvnic_disable_irqs(adapter);
adapter->state = VNIC_CLOSED;
if (reset_state == VNIC_CLOSED)
return 0;
rc = __ibmvnic_open(netdev);
if (rc)
return IBMVNIC_OPEN_FAILED;
/* 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]);
return 0;
}
/**
* 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.
@ -1841,12 +1921,10 @@ static int do_reset(struct ibmvnic_adapter *adapter,
netdev_dbg(adapter->netdev, "Re-setting driver (%d)\n",
rwi->reset_reason);
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();
rtnl_lock();
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;
@ -1858,37 +1936,25 @@ 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) {
if (adapter->reset_reason == VNIC_RESET_CHANGE_PARAM) {
rc = __ibmvnic_close(netdev);
if (rc)
goto out;
} else {
adapter->state = VNIC_CLOSING;
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;
}
adapter->state = VNIC_CLOSED;
if (adapter->state != VNIC_CLOSING) {
rc = -1;
goto out;
}
}
if (adapter->reset_reason == VNIC_RESET_CHANGE_PARAM) {
release_resources(adapter);
release_sub_crqs(adapter, 1);
release_crq_queue(adapter);
adapter->state = VNIC_CLOSED;
}
if (adapter->reset_reason != VNIC_RESET_NON_FATAL) {
@ -1897,9 +1963,7 @@ static int do_reset(struct ibmvnic_adapter *adapter,
*/
adapter->state = VNIC_PROBED;
if (adapter->reset_reason == VNIC_RESET_CHANGE_PARAM) {
rc = init_crq_queue(adapter);
} else if (adapter->reset_reason == VNIC_RESET_MOBILITY) {
if (adapter->reset_reason == VNIC_RESET_MOBILITY) {
rc = ibmvnic_reenable_crq_queue(adapter);
release_sub_crqs(adapter, 1);
} else {
@ -1939,11 +2003,7 @@ static int do_reset(struct ibmvnic_adapter *adapter,
goto out;
}
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 ||
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 ||
@ -2004,9 +2064,7 @@ static int do_reset(struct ibmvnic_adapter *adapter,
rc = 0;
out:
/* requestor of VNIC_RESET_CHANGE_PARAM should still hold the rtnl lock */
if (!(adapter->reset_reason == VNIC_RESET_CHANGE_PARAM))
rtnl_unlock();
rtnl_unlock();
return rc;
}
@ -2140,7 +2198,10 @@ static void __ibmvnic_reset(struct work_struct *work)
}
spin_unlock_irqrestore(&adapter->state_lock, flags);
if (adapter->force_reset_recovery) {
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) {
/* Transport event occurred during previous reset */
if (adapter->wait_for_reset) {
/* Previous was CHANGE_PARAM; caller locked */