Commit 101b40a0 authored by Shannon Nelson's avatar Shannon Nelson Committed by David S. Miller

ionic: change queue count with no reset

Add to our new ionic_reconfigure_queues() to also be able to change
the number of queues in use, and to change the queue interrupt layout
between split and combined.
Signed-off-by: default avatarShannon Nelson <snelson@pensando.io>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a34e25ab
......@@ -561,32 +561,15 @@ static void ionic_get_channels(struct net_device *netdev,
}
}
static void ionic_set_queuecount(struct ionic_lif *lif, void *arg)
{
struct ethtool_channels *ch = arg;
if (ch->combined_count) {
lif->nxqs = ch->combined_count;
if (test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state)) {
clear_bit(IONIC_LIF_F_SPLIT_INTR, lif->state);
lif->tx_coalesce_usecs = lif->rx_coalesce_usecs;
lif->tx_coalesce_hw = lif->rx_coalesce_hw;
netdev_info(lif->netdev, "Sharing queue interrupts\n");
}
} else {
lif->nxqs = ch->rx_count;
if (!test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state)) {
set_bit(IONIC_LIF_F_SPLIT_INTR, lif->state);
netdev_info(lif->netdev, "Splitting queue interrupts\n");
}
}
}
static int ionic_set_channels(struct net_device *netdev,
struct ethtool_channels *ch)
{
struct ionic_lif *lif = netdev_priv(netdev);
int new_cnt;
struct ionic_queue_params qparam;
int max_cnt;
int err;
ionic_init_queue_params(lif, &qparam);
if (ch->rx_count != ch->tx_count) {
netdev_info(netdev, "The rx and tx count must be equal\n");
......@@ -594,20 +577,63 @@ static int ionic_set_channels(struct net_device *netdev,
}
if (ch->combined_count && ch->rx_count) {
netdev_info(netdev, "Use either combined_count or rx/tx_count, not both\n");
netdev_info(netdev, "Use either combined or rx and tx, not both\n");
return -EINVAL;
}
if (ch->combined_count)
new_cnt = ch->combined_count;
else
new_cnt = ch->rx_count;
max_cnt = lif->ionic->ntxqs_per_lif;
if (ch->combined_count) {
if (ch->combined_count > max_cnt)
return -EINVAL;
if (test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state))
netdev_info(lif->netdev, "Sharing queue interrupts\n");
else if (ch->combined_count == lif->nxqs)
return 0;
if (lif->nxqs != new_cnt)
netdev_info(netdev, "Changing queue count from %d to %d\n",
lif->nxqs, new_cnt);
if (lif->nxqs != ch->combined_count)
netdev_info(netdev, "Changing queue count from %d to %d\n",
lif->nxqs, ch->combined_count);
return ionic_reset_queues(lif, ionic_set_queuecount, ch);
qparam.nxqs = ch->combined_count;
qparam.intr_split = 0;
} else {
max_cnt /= 2;
if (ch->rx_count > max_cnt)
return -EINVAL;
if (!test_bit(IONIC_LIF_F_SPLIT_INTR, lif->state))
netdev_info(lif->netdev, "Splitting queue interrupts\n");
else if (ch->rx_count == lif->nxqs)
return 0;
if (lif->nxqs != ch->rx_count)
netdev_info(netdev, "Changing queue count from %d to %d\n",
lif->nxqs, ch->rx_count);
qparam.nxqs = ch->rx_count;
qparam.intr_split = 1;
}
/* if we're not running, just set the values and return */
if (!netif_running(lif->netdev)) {
lif->nxqs = qparam.nxqs;
if (qparam.intr_split) {
set_bit(IONIC_LIF_F_SPLIT_INTR, lif->state);
} else {
clear_bit(IONIC_LIF_F_SPLIT_INTR, lif->state);
lif->tx_coalesce_usecs = lif->rx_coalesce_usecs;
lif->tx_coalesce_hw = lif->rx_coalesce_hw;
}
return 0;
}
err = ionic_reconfigure_queues(lif, &qparam);
if (err)
netdev_info(netdev, "Queue reconfiguration failed, changes canceled: %d\n", err);
return err;
}
static u32 ionic_get_priv_flags(struct net_device *netdev)
......
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