ixgbe_ethtool.c

linux 内核源代码

	ring->rx_jumbo_pending = 0;
}

static int ixgbe_set_ringparam(struct net_device *netdev,
			       struct ethtool_ringparam *ring)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	struct ixgbe_tx_buffer *old_buf;
	struct ixgbe_rx_buffer *old_rx_buf;
	void *old_desc;
	int i, err;
	u32 new_rx_count, new_tx_count, old_size;
	dma_addr_t old_dma;

	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 (netif_running(adapter->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) {
		for (i = 0; i < adapter->num_tx_queues; i++) {
			/* Save existing descriptor ring */
			old_buf = adapter->tx_ring[i].tx_buffer_info;
			old_desc = adapter->tx_ring[i].desc;
			old_size = adapter->tx_ring[i].size;
			old_dma = adapter->tx_ring[i].dma;
			/* Try to allocate a new one */
			adapter->tx_ring[i].tx_buffer_info = NULL;
			adapter->tx_ring[i].desc = NULL;
			adapter->tx_ring[i].count = new_tx_count;
			err = ixgbe_setup_tx_resources(adapter,
						       &adapter->tx_ring[i]);
			if (err) {
				/* Restore the old one so at least
				   the adapter still works, even if
				   we failed the request */
				adapter->tx_ring[i].tx_buffer_info = old_buf;
				adapter->tx_ring[i].desc = old_desc;
				adapter->tx_ring[i].size = old_size;
				adapter->tx_ring[i].dma = old_dma;
				goto err_setup;
			}
			/* Free the old buffer manually */
			vfree(old_buf);
			pci_free_consistent(adapter->pdev, old_size,
					    old_desc, old_dma);
		}
	}

	if (new_rx_count != adapter->rx_ring->count) {
		for (i = 0; i < adapter->num_rx_queues; i++) {

			old_rx_buf = adapter->rx_ring[i].rx_buffer_info;
			old_desc = adapter->rx_ring[i].desc;
			old_size = adapter->rx_ring[i].size;
			old_dma = adapter->rx_ring[i].dma;

			adapter->rx_ring[i].rx_buffer_info = NULL;
			adapter->rx_ring[i].desc = NULL;
			adapter->rx_ring[i].dma = 0;
			adapter->rx_ring[i].count = new_rx_count;
			err = ixgbe_setup_rx_resources(adapter,
						       &adapter->rx_ring[i]);
			if (err) {
				adapter->rx_ring[i].rx_buffer_info = old_rx_buf;
				adapter->rx_ring[i].desc = old_desc;
				adapter->rx_ring[i].size = old_size;
				adapter->rx_ring[i].dma = old_dma;
				goto err_setup;
			}

			vfree(old_rx_buf);
			pci_free_consistent(adapter->pdev, old_size, old_desc,
					    old_dma);
		}
	}

	err = 0;
err_setup:
	if (netif_running(adapter->netdev))
		ixgbe_up(adapter);

	return err;
}

static int ixgbe_get_sset_count(struct net_device *netdev, int sset)
{
	switch (sset) {
	case ETH_SS_STATS:
		return IXGBE_STATS_LEN;
	default:
		return -EOPNOTSUPP;
	}
}

static void ixgbe_get_ethtool_stats(struct net_device *netdev,
				    struct ethtool_stats *stats, u64 *data)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	u64 *queue_stat;
	int stat_count = sizeof(struct ixgbe_queue_stats) / sizeof(u64);
	int j, k;
	int i;

	ixgbe_update_stats(adapter);
	for (i = 0; i < IXGBE_GLOBAL_STATS_LEN; i++) {
		char *p = (char *)adapter + ixgbe_gstrings_stats[i].stat_offset;
		data[i] = (ixgbe_gstrings_stats[i].sizeof_stat ==
			   sizeof(u64)) ? *(u64 *)p : *(u32 *)p;
	}
	for (j = 0; j < adapter->num_tx_queues; j++) {
		queue_stat = (u64 *)&adapter->tx_ring[j].stats;
		for (k = 0; k < stat_count; k++)
			data[i + k] = queue_stat[k];
		i += k;
	}
	for (j = 0; j < adapter->num_rx_queues; j++) {
		queue_stat = (u64 *)&adapter->rx_ring[j].stats;
		for (k = 0; k < stat_count; k++)
			data[i + k] = queue_stat[k];
		i += k;
	}
}

static void ixgbe_get_strings(struct net_device *netdev, u32 stringset,
			      u8 *data)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	u8 *p = data;
	int i;

	switch (stringset) {
	case ETH_SS_STATS:
		for (i = 0; i < IXGBE_GLOBAL_STATS_LEN; i++) {
			memcpy(p, ixgbe_gstrings_stats[i].stat_string,
			       ETH_GSTRING_LEN);
			p += ETH_GSTRING_LEN;
		}
		for (i = 0; i < adapter->num_tx_queues; i++) {
			sprintf(p, "tx_queue_%u_packets", i);
			p += ETH_GSTRING_LEN;
			sprintf(p, "tx_queue_%u_bytes", i);
			p += ETH_GSTRING_LEN;
		}
		for (i = 0; i < adapter->num_rx_queues; i++) {
			sprintf(p, "rx_queue_%u_packets", i);
			p += ETH_GSTRING_LEN;
			sprintf(p, "rx_queue_%u_bytes", i);
			p += ETH_GSTRING_LEN;
		}
/*		BUG_ON(p - data != IXGBE_STATS_LEN * ETH_GSTRING_LEN); */
		break;
	}
}


static void ixgbe_get_wol(struct net_device *netdev,
			  struct ethtool_wolinfo *wol)
{
	wol->supported = 0;
	wol->wolopts = 0;

	return;
}

static int ixgbe_nway_reset(struct net_device *netdev)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	if (netif_running(netdev)) {
		ixgbe_down(adapter);
		ixgbe_reset(adapter);
		ixgbe_up(adapter);
	}

	return 0;
}

static int ixgbe_phys_id(struct net_device *netdev, u32 data)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);
	u32 led_reg = IXGBE_READ_REG(&adapter->hw, IXGBE_LEDCTL);
	u32 i;

	if (!data || data > 300)
		data = 300;

	for (i = 0; i < (data * 1000); i += 400) {
		ixgbe_led_on(&adapter->hw, IXGBE_LED_ON);
		msleep_interruptible(200);
		ixgbe_led_off(&adapter->hw, IXGBE_LED_ON);
		msleep_interruptible(200);
	}

	/* Restore LED settings */
	IXGBE_WRITE_REG(&adapter->hw, IXGBE_LEDCTL, led_reg);

	return 0;
}

static int ixgbe_get_coalesce(struct net_device *netdev,
			      struct ethtool_coalesce *ec)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	if (adapter->rx_eitr == 0)
		ec->rx_coalesce_usecs = 0;
	else
		ec->rx_coalesce_usecs = 1000000 / adapter->rx_eitr;

	if (adapter->tx_eitr == 0)
		ec->tx_coalesce_usecs = 0;
	else
		ec->tx_coalesce_usecs = 1000000 / adapter->tx_eitr;

	ec->tx_max_coalesced_frames_irq = adapter->tx_ring[0].work_limit;
	return 0;
}

static int ixgbe_set_coalesce(struct net_device *netdev,
			      struct ethtool_coalesce *ec)
{
	struct ixgbe_adapter *adapter = netdev_priv(netdev);

	if ((ec->rx_coalesce_usecs > IXGBE_MAX_ITR_USECS) ||
	    ((ec->rx_coalesce_usecs > 0) &&
	     (ec->rx_coalesce_usecs < IXGBE_MIN_ITR_USECS)))
		return -EINVAL;
	if ((ec->tx_coalesce_usecs > IXGBE_MAX_ITR_USECS) ||
	    ((ec->tx_coalesce_usecs > 0) &&
	     (ec->tx_coalesce_usecs < IXGBE_MIN_ITR_USECS)))
		return -EINVAL;

	/* convert to rate of irq's per second */
	if (ec->rx_coalesce_usecs == 0)
		adapter->rx_eitr = 0;
	else
		adapter->rx_eitr = (1000000 / ec->rx_coalesce_usecs);

	if (ec->tx_coalesce_usecs == 0)
		adapter->tx_eitr = 0;
	else
		adapter->tx_eitr = (1000000 / ec->tx_coalesce_usecs);

	if (ec->tx_max_coalesced_frames_irq)
		adapter->tx_ring[0].work_limit =
					ec->tx_max_coalesced_frames_irq;

	if (netif_running(netdev)) {
		ixgbe_down(adapter);
		ixgbe_up(adapter);
	}

	return 0;
}


static struct ethtool_ops ixgbe_ethtool_ops = {
	.get_settings           = ixgbe_get_settings,
	.set_settings           = ixgbe_set_settings,
	.get_drvinfo            = ixgbe_get_drvinfo,
	.get_regs_len           = ixgbe_get_regs_len,
	.get_regs               = ixgbe_get_regs,
	.get_wol                = ixgbe_get_wol,
	.nway_reset             = ixgbe_nway_reset,
	.get_link               = ethtool_op_get_link,
	.get_eeprom_len         = ixgbe_get_eeprom_len,
	.get_eeprom             = ixgbe_get_eeprom,
	.get_ringparam          = ixgbe_get_ringparam,
	.set_ringparam          = ixgbe_set_ringparam,
	.get_pauseparam         = ixgbe_get_pauseparam,
	.set_pauseparam         = ixgbe_set_pauseparam,
	.get_rx_csum            = ixgbe_get_rx_csum,
	.set_rx_csum            = ixgbe_set_rx_csum,
	.get_tx_csum            = ixgbe_get_tx_csum,
	.set_tx_csum            = ixgbe_set_tx_csum,
	.get_sg                 = ethtool_op_get_sg,
	.set_sg                 = ethtool_op_set_sg,
	.get_msglevel           = ixgbe_get_msglevel,
	.set_msglevel           = ixgbe_set_msglevel,
	.get_tso                = ethtool_op_get_tso,
	.set_tso                = ixgbe_set_tso,
	.get_strings            = ixgbe_get_strings,
	.phys_id                = ixgbe_phys_id,
	.get_sset_count		= ixgbe_get_sset_count,
	.get_ethtool_stats      = ixgbe_get_ethtool_stats,
	.get_coalesce           = ixgbe_get_coalesce,
	.set_coalesce           = ixgbe_set_coalesce,
};

void ixgbe_set_ethtool_ops(struct net_device *netdev)
{
	SET_ETHTOOL_OPS(netdev, &ixgbe_ethtool_ops);
}