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net: qede: Implement ndo_tx_timeout 

Upon tx timeout detection we do disable carrier and print TX queue
info on TX timeout. We then raise hw error condition and trigger
service task to handle this.

This handler will capture extra debug info and then optionally
trigger recovery procedure to try restore function.

Signed-off-by: Denis Bolotin <dbolotin@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Denis Bolotin 2020-05-14 12:57:24 +03:00 committed by David S. Miller
parent 7d9acd87bd
commit 5144e9f439
2 changed files with 46 additions and 1 deletions
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1
drivers/net/ethernet/qlogic/qede/qede.h
View File

@ -533,7 +533,6 @@ u16 qede_select_queue(struct net_device *dev, struct sk_buff *skb,
netdev_features_t qede_features_check(struct sk_buff *skb,
struct net_device *dev,
netdev_features_t features);
void qede_tx_log_print(struct qede_dev *edev, struct qede_fastpath *fp);
int qede_alloc_rx_buffer(struct qede_rx_queue *rxq, bool allow_lazy);
int qede_free_tx_pkt(struct qede_dev *edev,
struct qede_tx_queue *txq, int *len);

46
drivers/net/ethernet/qlogic/qede/qede_main.c
View File

@ -539,6 +539,51 @@ static int qede_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
return 0;
}
static void qede_tx_log_print(struct qede_dev *edev, struct qede_tx_queue *txq)
{
DP_NOTICE(edev,
"Txq[%d]: FW cons [host] %04x, SW cons %04x, SW prod %04x [Jiffies %lu]\n",
txq->index, le16_to_cpu(*txq->hw_cons_ptr),
qed_chain_get_cons_idx(&txq->tx_pbl),
qed_chain_get_prod_idx(&txq->tx_pbl),
jiffies);
}
static void qede_tx_timeout(struct net_device *dev, unsigned int txqueue)
{
struct qede_dev *edev = netdev_priv(dev);
struct qede_tx_queue *txq;
int cos;
netif_carrier_off(dev);
DP_NOTICE(edev, "TX timeout on queue %u!\n", txqueue);
if (!(edev->fp_array[txqueue].type & QEDE_FASTPATH_TX))
return;
for_each_cos_in_txq(edev, cos) {
txq = &edev->fp_array[txqueue].txq[cos];
if (qed_chain_get_cons_idx(&txq->tx_pbl) !=
qed_chain_get_prod_idx(&txq->tx_pbl))
qede_tx_log_print(edev, txq);
}
if (IS_VF(edev))
return;
if (test_and_set_bit(QEDE_ERR_IS_HANDLED, &edev->err_flags) ||
edev->state == QEDE_STATE_RECOVERY) {
DP_INFO(edev,
"Avoid handling a Tx timeout while another HW error is being handled\n");
return;
}
set_bit(QEDE_ERR_GET_DBG_INFO, &edev->err_flags);
set_bit(QEDE_SP_HW_ERR, &edev->sp_flags);
schedule_delayed_work(&edev->sp_task, 0);
}
static int qede_setup_tc(struct net_device *ndev, u8 num_tc)
{
struct qede_dev *edev = netdev_priv(ndev);
@ -626,6 +671,7 @@ static const struct net_device_ops qede_netdev_ops = {
.ndo_validate_addr = eth_validate_addr,
.ndo_change_mtu = qede_change_mtu,
.ndo_do_ioctl = qede_ioctl,
.ndo_tx_timeout = qede_tx_timeout,
#ifdef CONFIG_QED_SRIOV
.ndo_set_vf_mac = qede_set_vf_mac,
.ndo_set_vf_vlan = qede_set_vf_vlan,