diff options
| -rw-r--r-- | drivers/net/mv643xx_eth.c | 63 |
1 files changed, 54 insertions, 9 deletions
diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c index c32d623061d..89eaf3b3c76 100644 --- a/drivers/net/mv643xx_eth.c +++ b/drivers/net/mv643xx_eth.c @@ -286,6 +286,9 @@ struct mv643xx_eth_shared_private { #define TX_BW_CONTROL_OLD_LAYOUT 1 #define TX_BW_CONTROL_NEW_LAYOUT 2 +static int mv643xx_eth_open(struct net_device *dev); +static int mv643xx_eth_stop(struct net_device *dev); + /* per-port *****************************************************************/ struct mib_counters { @@ -385,7 +388,7 @@ struct mv643xx_eth_private { /* * RX state. */ - int default_rx_ring_size; + int rx_ring_size; unsigned long rx_desc_sram_addr; int rx_desc_sram_size; int rxq_count; @@ -395,7 +398,7 @@ struct mv643xx_eth_private { /* * TX state. */ - int default_tx_ring_size; + int tx_ring_size; unsigned long tx_desc_sram_addr; int tx_desc_sram_size; int txq_count; @@ -907,7 +910,7 @@ static int txq_reclaim(struct tx_queue *txq, int budget, int force) if (skb != NULL) { if (skb_queue_len(&mp->rx_recycle) < - mp->default_rx_ring_size && + mp->rx_ring_size && skb_recycle_check(skb, mp->skb_size + dma_get_cache_alignment() - 1)) __skb_queue_head(&mp->rx_recycle, skb); @@ -1485,6 +1488,46 @@ mv643xx_eth_set_coalesce(struct net_device *dev, struct ethtool_coalesce *ec) return 0; } +static void +mv643xx_eth_get_ringparam(struct net_device *dev, struct ethtool_ringparam *er) +{ + struct mv643xx_eth_private *mp = netdev_priv(dev); + + er->rx_max_pending = 4096; + er->tx_max_pending = 4096; + er->rx_mini_max_pending = 0; + er->rx_jumbo_max_pending = 0; + + er->rx_pending = mp->rx_ring_size; + er->tx_pending = mp->tx_ring_size; + er->rx_mini_pending = 0; + er->rx_jumbo_pending = 0; +} + +static int +mv643xx_eth_set_ringparam(struct net_device *dev, struct ethtool_ringparam *er) +{ + struct mv643xx_eth_private *mp = netdev_priv(dev); + + if (er->rx_mini_pending || er->rx_jumbo_pending) + return -EINVAL; + + mp->rx_ring_size = er->rx_pending < 4096 ? er->rx_pending : 4096; + mp->tx_ring_size = er->tx_pending < 4096 ? er->tx_pending : 4096; + + if (netif_running(dev)) { + mv643xx_eth_stop(dev); + if (mv643xx_eth_open(dev)) { + dev_printk(KERN_ERR, &dev->dev, + "fatal error on re-opening device after " + "ring param change\n"); + return -ENOMEM; + } + } + + return 0; +} + static void mv643xx_eth_get_strings(struct net_device *dev, uint32_t stringset, uint8_t *data) { @@ -1541,6 +1584,8 @@ static const struct ethtool_ops mv643xx_eth_ethtool_ops = { .get_link = mv643xx_eth_get_link, .get_coalesce = mv643xx_eth_get_coalesce, .set_coalesce = mv643xx_eth_set_coalesce, + .get_ringparam = mv643xx_eth_get_ringparam, + .set_ringparam = mv643xx_eth_set_ringparam, .set_sg = ethtool_op_set_sg, .get_strings = mv643xx_eth_get_strings, .get_ethtool_stats = mv643xx_eth_get_ethtool_stats, @@ -1732,7 +1777,7 @@ static int rxq_init(struct mv643xx_eth_private *mp, int index) rxq->index = index; - rxq->rx_ring_size = mp->default_rx_ring_size; + rxq->rx_ring_size = mp->rx_ring_size; rxq->rx_desc_count = 0; rxq->rx_curr_desc = 0; @@ -1832,7 +1877,7 @@ static int txq_init(struct mv643xx_eth_private *mp, int index) txq->index = index; - txq->tx_ring_size = mp->default_tx_ring_size; + txq->tx_ring_size = mp->tx_ring_size; txq->tx_desc_count = 0; txq->tx_curr_desc = 0; @@ -2597,17 +2642,17 @@ static void set_params(struct mv643xx_eth_private *mp, else uc_addr_get(mp, dev->dev_addr); - mp->default_rx_ring_size = DEFAULT_RX_QUEUE_SIZE; + mp->rx_ring_size = DEFAULT_RX_QUEUE_SIZE; if (pd->rx_queue_size) - mp->default_rx_ring_size = pd->rx_queue_size; + mp->rx_ring_size = pd->rx_queue_size; mp->rx_desc_sram_addr = pd->rx_sram_addr; mp->rx_desc_sram_size = pd->rx_sram_size; mp->rxq_count = pd->rx_queue_count ? : 1; - mp->default_tx_ring_size = DEFAULT_TX_QUEUE_SIZE; + mp->tx_ring_size = DEFAULT_TX_QUEUE_SIZE; if (pd->tx_queue_size) - mp->default_tx_ring_size = pd->tx_queue_size; + mp->tx_ring_size = pd->tx_queue_size; mp->tx_desc_sram_addr = pd->tx_sram_addr; mp->tx_desc_sram_size = pd->tx_sram_size; |