static int ixgbe_set_ringparam(struct net_device *netdev,
struct ethtool_ringparam *ring)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
struct ixgbe_ring *temp_ring;
int i, err;
u32 new_rx_count, new_tx_count;
if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
return -EINVAL;
new_rx_count = max(ring->rx_pending, (u32)IXGBE_MIN_RXD);
new_rx_count = min(new_rx_count, (u32)IXGBE_MAX_RXD);
new_rx_count = ALIGN(new_rx_count, IXGBE_REQ_RX_DESCRIPTOR_MULTIPLE);
new_tx_count = max(ring->tx_pending, (u32)IXGBE_MIN_TXD);
new_tx_count = min(new_tx_count, (u32)IXGBE_MAX_TXD);
new_tx_count = ALIGN(new_tx_count, IXGBE_REQ_TX_DESCRIPTOR_MULTIPLE);
if ((new_tx_count == adapter->tx_ring->count) &&
(new_rx_count == adapter->rx_ring->count)) {
/* nothing to do */
return 0;
}
temp_ring = kcalloc(adapter->num_tx_queues,
sizeof(struct ixgbe_ring), GFP_KERNEL);
if (!temp_ring)
return -ENOMEM;
while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
msleep(1);
if (new_tx_count != adapter->tx_ring->count) {
for (i = 0; i < adapter->num_tx_queues; i++) {
temp_ring[i].count = new_tx_count;
err = ixgbe_setup_tx_resources(adapter, &temp_ring[i]);
if (err) {
while (i) {
i--;
ixgbe_free_tx_resources(adapter,
&temp_ring[i]);
}
goto err_setup;
}
temp_ring[i].v_idx = adapter->tx_ring[i].v_idx;
}
if (netif_running(netdev))
netdev->netdev_ops->ndo_stop(netdev);
ixgbe_reset_interrupt_capability(adapter);
ixgbe_napi_del_all(adapter);
INIT_LIST_HEAD(&netdev->napi_list);
kfree(adapter->tx_ring);
adapter->tx_ring = temp_ring;
temp_ring = NULL;
adapter->tx_ring_count = new_tx_count;
}
temp_ring = kcalloc(adapter->num_rx_queues,
sizeof(struct ixgbe_ring), GFP_KERNEL);
if (!temp_ring) {
if (netif_running(netdev))
netdev->netdev_ops->ndo_open(netdev);
return -ENOMEM;
}
if (new_rx_count != adapter->rx_ring->count) {
for (i = 0; i < adapter->num_rx_queues; i++) {
temp_ring[i].count = new_rx_count;
err = ixgbe_setup_rx_resources(adapter, &temp_ring[i]);
if (err) {
while (i) {
i--;
ixgbe_free_rx_resources(adapter,
&temp_ring[i]);
}
goto err_setup;
}
temp_ring[i].v_idx = adapter->rx_ring[i].v_idx;
}
if (netif_running(netdev))
netdev->netdev_ops->ndo_stop(netdev);
ixgbe_reset_interrupt_capability(adapter);
ixgbe_napi_del_all(adapter);
INIT_LIST_HEAD(&netdev->napi_list);
kfree(adapter->rx_ring);
adapter->rx_ring = temp_ring;
temp_ring = NULL;
adapter->rx_ring_count = new_rx_count;
}
/* success! */
err = 0;
err_setup:
ixgbe_init_interrupt_scheme(adapter);
if (netif_running(netdev))
netdev->netdev_ops->ndo_open(netdev);
clear_bit(__IXGBE_RESETTING, &adapter->state);
return err;
}
static int ixgbe_set_ringparam(struct net_device *netdev,
struct ethtool_ringparam *ring)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
struct ixgbe_ring *temp_ring;
int i, err;
u32 new_rx_count, new_tx_count;
if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
return -EINVAL;
new_rx_count = max(ring->rx_pending, (u32)IXGBE_MIN_RXD);
new_rx_count = min(new_rx_count, (u32)IXGBE_MAX_RXD);
new_rx_count = ALIGN(new_rx_count, IXGBE_REQ_RX_DESCRIPTOR_MULTIPLE);
new_tx_count = max(ring->tx_pending, (u32)IXGBE_MIN_TXD);
new_tx_count = min(new_tx_count, (u32)IXGBE_MAX_TXD);
new_tx_count = ALIGN(new_tx_count, IXGBE_REQ_TX_DESCRIPTOR_MULTIPLE);
if ((new_tx_count == adapter->tx_ring->count) &&
(new_rx_count == adapter->rx_ring->count)) {
/* nothing to do */
return 0;
}
if (adapter->num_tx_queues > adapter->num_rx_queues)
temp_ring = vmalloc(adapter->num_tx_queues *
sizeof(struct ixgbe_ring));
else
temp_ring = vmalloc(adapter->num_rx_queues *
sizeof(struct ixgbe_ring));
if (!temp_ring)
return -ENOMEM;
while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
msleep(1);
if (netif_running(netdev))
ixgbe_down(adapter);
/*
* We can't just free everything and then setup again,
* because the ISRs in MSI-X mode get passed pointers
* to the tx and rx ring structs.
*/
if (new_tx_count != adapter->tx_ring->count) {
memcpy(temp_ring, adapter->tx_ring,
adapter->num_tx_queues * sizeof(struct ixgbe_ring));
for (i = 0; i < adapter->num_tx_queues; i++) {
temp_ring[i].count = new_tx_count;
err = ixgbe_setup_tx_resources(adapter, &temp_ring[i]);
if (err) {
while (i) {
i--;
ixgbe_free_tx_resources(adapter,
&temp_ring[i]);
}
goto err_setup;
}
}
for (i = 0; i < adapter->num_tx_queues; i++)
ixgbe_free_tx_resources(adapter, &adapter->tx_ring[i]);
memcpy(adapter->tx_ring, temp_ring,
adapter->num_tx_queues * sizeof(struct ixgbe_ring));
adapter->tx_ring_count = new_tx_count;
}
if (new_rx_count != adapter->rx_ring->count) {
memcpy(temp_ring, adapter->rx_ring,
adapter->num_rx_queues * sizeof(struct ixgbe_ring));
for (i = 0; i < adapter->num_rx_queues; i++) {
temp_ring[i].count = new_rx_count;
err = ixgbe_setup_rx_resources(adapter, &temp_ring[i]);
if (err) {
while (i) {
i--;
ixgbe_free_rx_resources(adapter,
&temp_ring[i]);
}
goto err_setup;
}
}
for (i = 0; i < adapter->num_rx_queues; i++)
ixgbe_free_rx_resources(adapter, &adapter->rx_ring[i]);
memcpy(adapter->rx_ring, temp_ring,
adapter->num_rx_queues * sizeof(struct ixgbe_ring));
adapter->rx_ring_count = new_rx_count;
}
/* success! */
err = 0;
err_setup:
if (netif_running(netdev))
ixgbe_up(adapter);
clear_bit(__IXGBE_RESETTING, &adapter->state);
return err;
}
static int ixgbe_set_ringparam(struct net_device *netdev,
struct ethtool_ringparam *ring)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
struct ixgbe_ring *temp_tx_ring, *temp_rx_ring;
int i, err;
u32 new_rx_count, new_tx_count;
bool need_update = false;
if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
return -EINVAL;
new_rx_count = max(ring->rx_pending, (u32)IXGBE_MIN_RXD);
new_rx_count = min(new_rx_count, (u32)IXGBE_MAX_RXD);
new_rx_count = ALIGN(new_rx_count, IXGBE_REQ_RX_DESCRIPTOR_MULTIPLE);
new_tx_count = max(ring->tx_pending, (u32)IXGBE_MIN_TXD);
new_tx_count = min(new_tx_count, (u32)IXGBE_MAX_TXD);
new_tx_count = ALIGN(new_tx_count, IXGBE_REQ_TX_DESCRIPTOR_MULTIPLE);
if ((new_tx_count == adapter->tx_ring->count) &&
(new_rx_count == adapter->rx_ring->count)) {
/* nothing to do */
return 0;
}
while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
msleep(1);
temp_tx_ring = kcalloc(adapter->num_tx_queues,
sizeof(struct ixgbe_ring), GFP_KERNEL);
if (!temp_tx_ring) {
err = -ENOMEM;
goto err_setup;
}
if (new_tx_count != adapter->tx_ring_count) {
memcpy(temp_tx_ring, adapter->tx_ring,
adapter->num_tx_queues * sizeof(struct ixgbe_ring));
for (i = 0; i < adapter->num_tx_queues; i++) {
temp_tx_ring[i].count = new_tx_count;
err = ixgbe_setup_tx_resources(adapter,
&temp_tx_ring[i]);
if (err) {
while (i) {
i--;
ixgbe_free_tx_resources(adapter,
&temp_tx_ring[i]);
}
goto err_setup;
}
temp_tx_ring[i].v_idx = adapter->tx_ring[i].v_idx;
}
need_update = true;
}
temp_rx_ring = kcalloc(adapter->num_rx_queues,
sizeof(struct ixgbe_ring), GFP_KERNEL);
if ((!temp_rx_ring) && (need_update)) {
for (i = 0; i < adapter->num_tx_queues; i++)
ixgbe_free_tx_resources(adapter, &temp_tx_ring[i]);
kfree(temp_tx_ring);
err = -ENOMEM;
goto err_setup;
}
if (new_rx_count != adapter->rx_ring_count) {
memcpy(temp_rx_ring, adapter->rx_ring,
adapter->num_rx_queues * sizeof(struct ixgbe_ring));
for (i = 0; i < adapter->num_rx_queues; i++) {
temp_rx_ring[i].count = new_rx_count;
err = ixgbe_setup_rx_resources(adapter,
&temp_rx_ring[i]);
if (err) {
while (i) {
i--;
ixgbe_free_rx_resources(adapter,
&temp_rx_ring[i]);
}
goto err_setup;
}
temp_rx_ring[i].v_idx = adapter->rx_ring[i].v_idx;
}
need_update = true;
}
/* if rings need to be updated, here's the place to do it in one shot */
if (need_update) {
if (netif_running(netdev))
ixgbe_down(adapter);
/* tx */
if (new_tx_count != adapter->tx_ring_count) {
kfree(adapter->tx_ring);
adapter->tx_ring = temp_tx_ring;
temp_tx_ring = NULL;
adapter->tx_ring_count = new_tx_count;
}
/* rx */
if (new_rx_count != adapter->rx_ring_count) {
kfree(adapter->rx_ring);
adapter->rx_ring = temp_rx_ring;
temp_rx_ring = NULL;
adapter->rx_ring_count = new_rx_count;
}
}
/* success! */
err = 0;
if (netif_running(netdev))
ixgbe_up(adapter);
err_setup:
clear_bit(__IXGBE_RESETTING, &adapter->state);
return err;
}