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ibmvnic: Add netdev_dbg output for debugging 

To ease debugging of the ibmvnic driver add a series of netdev_dbg()
statements to track driver status, especially during initialization,
removal, and resetting of the driver.

Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nathan Fontenot 2017-08-08 15:24:05 -05:00 committed by David S. Miller
parent 7c1885ae9a
commit d1cf33d931
1 changed files with 55 additions and 7 deletions
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62
drivers/net/ethernet/ibm/ibmvnic.c
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@ -399,6 +399,7 @@ static int init_stats_token(struct ibmvnic_adapter *adapter)
}
adapter->stats_token = stok;
netdev_dbg(adapter->netdev, "Stats token initialized (%llx)\n", stok);
return 0;
}
@ -412,6 +413,8 @@ static int reset_rx_pools(struct ibmvnic_adapter *adapter)
for (i = 0; i < rx_scrqs; i++) {
rx_pool = &adapter->rx_pool[i];
netdev_dbg(adapter->netdev, "Re-setting rx_pool[%d]\n", i);
rc = reset_long_term_buff(adapter, &rx_pool->long_term_buff);
if (rc)
return rc;
@ -444,6 +447,8 @@ static void release_rx_pools(struct ibmvnic_adapter *adapter)
for (i = 0; i < rx_scrqs; i++) {
rx_pool = &adapter->rx_pool[i];
netdev_dbg(adapter->netdev, "Releasing rx_pool[%d]\n", i);
kfree(rx_pool->free_map);
free_long_term_buff(adapter, &rx_pool->long_term_buff);
@ -490,7 +495,7 @@ static int init_rx_pools(struct net_device *netdev)
rx_pool = &adapter->rx_pool[i];
netdev_dbg(adapter->netdev,
"Initializing rx_pool %d, %lld buffs, %lld bytes each\n",
"Initializing rx_pool[%d], %lld buffs, %lld bytes each\n",
i, adapter->req_rx_add_entries_per_subcrq,
be64_to_cpu(size_array[i]));
@ -540,6 +545,8 @@ static int reset_tx_pools(struct ibmvnic_adapter *adapter)
tx_scrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs);
for (i = 0; i < tx_scrqs; i++) {
netdev_dbg(adapter->netdev, "Re-setting tx_pool[%d]\n", i);
tx_pool = &adapter->tx_pool[i];
rc = reset_long_term_buff(adapter, &tx_pool->long_term_buff);
@ -570,6 +577,7 @@ static void release_tx_pools(struct ibmvnic_adapter *adapter)
tx_scrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs);
for (i = 0; i < tx_scrqs; i++) {
netdev_dbg(adapter->netdev, "Releasing tx_pool[%d]\n", i);
tx_pool = &adapter->tx_pool[i];
kfree(tx_pool->tx_buff);
free_long_term_buff(adapter, &tx_pool->long_term_buff);
@ -596,6 +604,11 @@ static int init_tx_pools(struct net_device *netdev)
for (i = 0; i < tx_subcrqs; i++) {
tx_pool = &adapter->tx_pool[i];
netdev_dbg(adapter->netdev,
"Initializing tx_pool[%d], %lld buffs\n",
i, adapter->req_tx_entries_per_subcrq);
tx_pool->tx_buff = kcalloc(adapter->req_tx_entries_per_subcrq,
sizeof(struct ibmvnic_tx_buff),
GFP_KERNEL);
@ -666,8 +679,10 @@ static void ibmvnic_napi_disable(struct ibmvnic_adapter *adapter)
if (!adapter->napi_enabled)
return;
for (i = 0; i < adapter->req_rx_queues; i++)
for (i = 0; i < adapter->req_rx_queues; i++) {
netdev_dbg(adapter->netdev, "Disabling napi[%d]\n", i);
napi_disable(&adapter->napi[i]);
}
adapter->napi_enabled = false;
}
@ -730,8 +745,11 @@ static void release_resources(struct ibmvnic_adapter *adapter)
if (adapter->napi) {
for (i = 0; i < adapter->req_rx_queues; i++) {
if (&adapter->napi[i])
if (&adapter->napi[i]) {
netdev_dbg(adapter->netdev,
"Releasing napi[%d]\n", i);
netif_napi_del(&adapter->napi[i]);
}
}
}
}
@ -744,7 +762,8 @@ static int set_link_state(struct ibmvnic_adapter *adapter, u8 link_state)
bool resend;
int rc;
netdev_err(netdev, "setting link state %d\n", link_state);
netdev_dbg(netdev, "setting link state %d\n", link_state);
memset(&crq, 0, sizeof(crq));
crq.logical_link_state.first = IBMVNIC_CRQ_CMD;
crq.logical_link_state.cmd = LOGICAL_LINK_STATE;
@ -781,6 +800,9 @@ static int set_real_num_queues(struct net_device *netdev)
struct ibmvnic_adapter *adapter = netdev_priv(netdev);
int rc;
netdev_dbg(netdev, "Setting real tx/rx queues (%llx/%llx)\n",
adapter->req_tx_queues, adapter->req_rx_queues);
rc = netif_set_real_num_tx_queues(netdev, adapter->req_tx_queues);
if (rc) {
netdev_err(netdev, "failed to set the number of tx queues\n");
@ -818,6 +840,7 @@ static int init_resources(struct ibmvnic_adapter *adapter)
return -ENOMEM;
for (i = 0; i < adapter->req_rx_queues; i++) {
netdev_dbg(netdev, "Adding napi[%d]\n", i);
netif_napi_add(netdev, &adapter->napi[i], ibmvnic_poll,
NAPI_POLL_WEIGHT);
}
@ -846,6 +869,7 @@ static int __ibmvnic_open(struct net_device *netdev)
* set the logical link state to up
*/
for (i = 0; i < adapter->req_rx_queues; i++) {
netdev_dbg(netdev, "Enabling rx_scrq[%d] irq\n", i);
if (prev_state == VNIC_CLOSED)
enable_irq(adapter->rx_scrq[i]->irq);
else
@ -853,6 +877,7 @@ static int __ibmvnic_open(struct net_device *netdev)
}
for (i = 0; i < adapter->req_tx_queues; i++) {
netdev_dbg(netdev, "Enabling tx_scrq[%d] irq\n", i);
if (prev_state == VNIC_CLOSED)
enable_irq(adapter->tx_scrq[i]->irq);
else
@ -926,6 +951,7 @@ static void clean_tx_pools(struct ibmvnic_adapter *adapter)
if (!tx_pool)
continue;
netdev_dbg(adapter->netdev, "Cleaning tx_pool[%d]\n", i);
for (j = 0; j < tx_entries; j++) {
if (tx_pool->tx_buff[j].skb) {
dev_kfree_skb_any(tx_pool->tx_buff[j].skb);
@ -953,8 +979,11 @@ static int __ibmvnic_close(struct net_device *netdev)
if (adapter->tx_scrq) {
for (i = 0; i < adapter->req_tx_queues; i++)
if (adapter->tx_scrq[i]->irq)
if (adapter->tx_scrq[i]->irq) {
netdev_dbg(adapter->netdev,
"Disabling tx_scrq[%d] irq\n", i);
disable_irq(adapter->tx_scrq[i]->irq);
}
}
rc = set_link_state(adapter, IBMVNIC_LOGICAL_LNK_DN);
@ -973,8 +1002,11 @@ static int __ibmvnic_close(struct net_device *netdev)
break;
}
if (adapter->rx_scrq[i]->irq)
if (adapter->rx_scrq[i]->irq) {
netdev_dbg(adapter->netdev,
"Disabling rx_scrq[%d] irq\n", i);
disable_irq(adapter->rx_scrq[i]->irq);
}
}
}
@ -1367,6 +1399,9 @@ static int do_reset(struct ibmvnic_adapter *adapter,
struct net_device *netdev = adapter->netdev;
int i, rc;
netdev_dbg(adapter->netdev, "Re-setting driver (%d)\n",
rwi->reset_reason);
netif_carrier_off(netdev);
adapter->reset_reason = rwi->reset_reason;
@ -1491,6 +1526,7 @@ static void __ibmvnic_reset(struct work_struct *work)
}
if (rc) {
netdev_dbg(adapter->netdev, "Reset failed\n");
free_all_rwi(adapter);
mutex_unlock(&adapter->reset_lock);
return;
@ -1524,7 +1560,7 @@ static void ibmvnic_reset(struct ibmvnic_adapter *adapter,
list_for_each(entry, &adapter->rwi_list) {
tmp = list_entry(entry, struct ibmvnic_rwi, list);
if (tmp->reset_reason == reason) {
netdev_err(netdev, "Matching reset found, skipping\n");
netdev_dbg(netdev, "Skipping matching reset\n");
mutex_unlock(&adapter->rwi_lock);
return;
}
@ -1540,6 +1576,8 @@ static void ibmvnic_reset(struct ibmvnic_adapter *adapter,
rwi->reset_reason = reason;
list_add_tail(&rwi->list, &adapter->rwi_list);
mutex_unlock(&adapter->rwi_lock);
netdev_dbg(adapter->netdev, "Scheduling reset (reason %d)\n", reason);
schedule_work(&adapter->ibmvnic_reset);
}
@ -1900,12 +1938,14 @@ static int reset_sub_crq_queues(struct ibmvnic_adapter *adapter)
int i, rc;
for (i = 0; i < adapter->req_tx_queues; i++) {
netdev_dbg(adapter->netdev, "Re-setting tx_scrq[%d]\n", i);
rc = reset_one_sub_crq_queue(adapter, adapter->tx_scrq[i]);
if (rc)
return rc;
}
for (i = 0; i < adapter->req_rx_queues; i++) {
netdev_dbg(adapter->netdev, "Re-setting rx_scrq[%d]\n", i);
rc = reset_one_sub_crq_queue(adapter, adapter->rx_scrq[i]);
if (rc)
return rc;
@ -2009,6 +2049,8 @@ static void release_sub_crqs(struct ibmvnic_adapter *adapter)
if (!adapter->tx_scrq[i])
continue;
netdev_dbg(adapter->netdev, "Releasing tx_scrq[%d]\n",
i);
if (adapter->tx_scrq[i]->irq) {
free_irq(adapter->tx_scrq[i]->irq,
adapter->tx_scrq[i]);
@ -2028,6 +2070,8 @@ static void release_sub_crqs(struct ibmvnic_adapter *adapter)
if (!adapter->rx_scrq[i])
continue;
netdev_dbg(adapter->netdev, "Releasing rx_scrq[%d]\n",
i);
if (adapter->rx_scrq[i]->irq) {
free_irq(adapter->rx_scrq[i]->irq,
adapter->rx_scrq[i]);
@ -2182,6 +2226,8 @@ static int init_sub_crq_irqs(struct ibmvnic_adapter *adapter)
int rc = 0;
for (i = 0; i < adapter->req_tx_queues; i++) {
netdev_dbg(adapter->netdev, "Initializing tx_scrq[%d] irq\n",
i);
scrq = adapter->tx_scrq[i];
scrq->irq = irq_create_mapping(NULL, scrq->hw_irq);
@ -2203,6 +2249,8 @@ static int init_sub_crq_irqs(struct ibmvnic_adapter *adapter)
}
for (i = 0; i < adapter->req_rx_queues; i++) {
netdev_dbg(adapter->netdev, "Initializing rx_scrq[%d] irq\n",
i);
scrq = adapter->rx_scrq[i];
scrq->irq = irq_create_mapping(NULL, scrq->hw_irq);
if (!scrq->irq) {