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modules/mqnic: Rework teardown sequence

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Signed-off-by: Alex Forencich <alex@alexforencich.com>
This commit is contained in:
Alex Forencich 2023-05-02 01:19:30 -07:00
parent 9834f8365c
commit d82f37b3b4
1 changed files with 15 additions and 23 deletions
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38
modules/mqnic/mqnic_netdev.c
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@ -137,6 +137,7 @@ static int mqnic_stop_port(struct net_device *ndev)
netif_tx_stop_all_queues(ndev);
netif_tx_unlock_bh(ndev);
netif_carrier_off(ndev);
netif_tx_disable(ndev);
spin_lock_bh(&priv->stats_lock);
@ -148,39 +149,30 @@ static int mqnic_stop_port(struct net_device *ndev)
for (k = 0; k < priv->sched_block_count; k++)
mqnic_deactivate_sched_block(priv->sched_block[k]);
// deactivate TX queues
for (k = 0; k < min(priv->txq_count, priv->tx_cq_count); k++) {
napi_disable(&priv->tx_cq[k]->napi);
// disable TX and RX queues
for (k = 0; k < min(priv->txq_count, priv->tx_cq_count); k++)
mqnic_deactivate_tx_ring(priv->txq[k]);
mqnic_deactivate_cq(priv->tx_cq[k]);
netif_napi_del(&priv->tx_cq[k]->napi);
}
// deactivate RX queues
for (k = 0; k < min(priv->rxq_count, priv->rx_cq_count); k++) {
napi_disable(&priv->rx_cq[k]->napi);
for (k = 0; k < min(priv->rxq_count, priv->rx_cq_count); k++)
mqnic_deactivate_rx_ring(priv->rxq[k]);
mqnic_deactivate_cq(priv->rx_cq[k]);
netif_napi_del(&priv->rx_cq[k]->napi);
}
msleep(20);
// free descriptors in TX queues
for (k = 0; k < priv->txq_count; k++)
// shut down NAPI and clean queues
for (k = 0; k < priv->txq_count; k++) {
napi_disable(&priv->tx_cq[k]->napi);
mqnic_deactivate_cq(priv->tx_cq[k]);
netif_napi_del(&priv->tx_cq[k]->napi);
mqnic_free_tx_buf(priv->txq[k]);
}
// free descriptors in RX queues
for (k = 0; k < priv->rxq_count; k++)
for (k = 0; k < priv->rxq_count; k++) {
napi_disable(&priv->rx_cq[k]->napi);
mqnic_deactivate_cq(priv->rx_cq[k]);
netif_napi_del(&priv->rx_cq[k]->napi);
mqnic_free_rx_buf(priv->rxq[k]);
}
netif_carrier_off(ndev);
return 0;
}