[PATCH] pcnet32: set_ringparam implementation
This patch implements the set_ringparam(), one of the ethtool operations, which allows changing tx/rx ring sizes via ethtool. - Changed memery allocation of tx/rx ring from static to dynamic - Implemented set_ringparam() - Tested on i386 and ppc64 Signed-off-by: Hubert WS Lin <wslin@tw.ibm.com> Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Cc: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This commit is contained in:
Hubert WS Lin
Jeff Garzik
Родитель
f89efd523b
Коммит
eabf041516
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@ -22,8 +22,8 @@
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*************************************************************************/
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#define DRV_NAME "pcnet32"
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#define DRV_VERSION "1.30j"
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#define DRV_RELDATE "29.04.2005"
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#define DRV_VERSION "1.31"
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#define DRV_RELDATE "02.Sep.2005"
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#define PFX DRV_NAME ": "
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static const char *version =
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@ -257,6 +257,7 @@ static int homepna[MAX_UNITS];
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* v1.30h 24 Jun 2004 Don Fry correctly select auto, speed, duplex in bcr32.
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* v1.30i 28 Jun 2004 Don Fry change to use module_param.
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* v1.30j 29 Apr 2005 Don Fry fix skb/map leak with loopback test.
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* v1.31 02 Sep 2005 Hubert WS Lin <wslin@tw.ibm.c0m> added set_ringparam().
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*/
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@ -266,17 +267,17 @@ static int homepna[MAX_UNITS];
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* That translates to 2 (4 == 2^^2) and 4 (16 == 2^^4).
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*/
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#ifndef PCNET32_LOG_TX_BUFFERS
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#define PCNET32_LOG_TX_BUFFERS 4
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#define PCNET32_LOG_RX_BUFFERS 5
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#define PCNET32_LOG_TX_BUFFERS 4
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#define PCNET32_LOG_RX_BUFFERS 5
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#define PCNET32_LOG_MAX_TX_BUFFERS 9 /* 2^9 == 512 */
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#define PCNET32_LOG_MAX_RX_BUFFERS 9
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#endif
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#define TX_RING_SIZE (1 << (PCNET32_LOG_TX_BUFFERS))
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#define TX_RING_MOD_MASK (TX_RING_SIZE - 1)
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#define TX_RING_LEN_BITS ((PCNET32_LOG_TX_BUFFERS) << 12)
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#define TX_MAX_RING_SIZE (1 << (PCNET32_LOG_MAX_TX_BUFFERS))
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#define RX_RING_SIZE (1 << (PCNET32_LOG_RX_BUFFERS))
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#define RX_RING_MOD_MASK (RX_RING_SIZE - 1)
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#define RX_RING_LEN_BITS ((PCNET32_LOG_RX_BUFFERS) << 4)
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#define RX_MAX_RING_SIZE (1 << (PCNET32_LOG_MAX_RX_BUFFERS))
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#define PKT_BUF_SZ 1544
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@ -339,8 +340,8 @@ struct pcnet32_access {
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*/
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struct pcnet32_private {
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/* The Tx and Rx ring entries must be aligned on 16-byte boundaries in 32bit mode. */
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struct pcnet32_rx_head rx_ring[RX_RING_SIZE];
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struct pcnet32_tx_head tx_ring[TX_RING_SIZE];
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struct pcnet32_rx_head *rx_ring;
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struct pcnet32_tx_head *tx_ring;
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struct pcnet32_init_block init_block;
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dma_addr_t dma_addr; /* DMA address of beginning of this
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object, returned by
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@ -349,13 +350,21 @@ struct pcnet32_private {
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structure */
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const char *name;
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/* The saved address of a sent-in-place packet/buffer, for skfree(). */
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struct sk_buff *tx_skbuff[TX_RING_SIZE];
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struct sk_buff *rx_skbuff[RX_RING_SIZE];
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dma_addr_t tx_dma_addr[TX_RING_SIZE];
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dma_addr_t rx_dma_addr[RX_RING_SIZE];
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struct sk_buff **tx_skbuff;
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struct sk_buff **rx_skbuff;
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dma_addr_t *tx_dma_addr;
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dma_addr_t *rx_dma_addr;
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struct pcnet32_access a;
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spinlock_t lock; /* Guard lock */
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unsigned int cur_rx, cur_tx; /* The next free ring entry */
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unsigned int rx_ring_size; /* current rx ring size */
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unsigned int tx_ring_size; /* current tx ring size */
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unsigned int rx_mod_mask; /* rx ring modular mask */
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unsigned int tx_mod_mask; /* tx ring modular mask */
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unsigned short rx_len_bits;
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unsigned short tx_len_bits;
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dma_addr_t rx_ring_dma_addr;
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dma_addr_t tx_ring_dma_addr;
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unsigned int dirty_rx, dirty_tx; /* The ring entries to be free()ed. */
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struct net_device_stats stats;
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char tx_full;
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@ -397,6 +406,9 @@ static int pcnet32_get_regs_len(struct net_device *dev);
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static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs,
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void *ptr);
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static void pcnet32_purge_tx_ring(struct net_device *dev);
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static int pcnet32_alloc_ring(struct net_device *dev);
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static void pcnet32_free_ring(struct net_device *dev);
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enum pci_flags_bit {
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PCI_USES_IO=1, PCI_USES_MEM=2, PCI_USES_MASTER=4,
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@ -613,10 +625,59 @@ static void pcnet32_get_ringparam(struct net_device *dev, struct ethtool_ringpar
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{
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struct pcnet32_private *lp = dev->priv;
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ering->tx_max_pending = TX_RING_SIZE - 1;
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ering->tx_pending = lp->cur_tx - lp->dirty_tx;
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ering->rx_max_pending = RX_RING_SIZE - 1;
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ering->rx_pending = lp->cur_rx & RX_RING_MOD_MASK;
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ering->tx_max_pending = TX_MAX_RING_SIZE - 1;
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ering->tx_pending = lp->tx_ring_size - 1;
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ering->rx_max_pending = RX_MAX_RING_SIZE - 1;
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ering->rx_pending = lp->rx_ring_size - 1;
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}
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static int pcnet32_set_ringparam(struct net_device *dev, struct ethtool_ringparam *ering)
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{
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struct pcnet32_private *lp = dev->priv;
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unsigned long flags;
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int i;
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if (ering->rx_mini_pending || ering->rx_jumbo_pending)
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return -EINVAL;
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if (netif_running(dev))
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pcnet32_close(dev);
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spin_lock_irqsave(&lp->lock, flags);
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pcnet32_free_ring(dev);
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lp->tx_ring_size = min(ering->tx_pending, (unsigned int) TX_MAX_RING_SIZE);
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lp->rx_ring_size = min(ering->rx_pending, (unsigned int) RX_MAX_RING_SIZE);
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for (i = 0; i <= PCNET32_LOG_MAX_TX_BUFFERS; i++) {
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if (lp->tx_ring_size <= (1 << i))
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break;
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}
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lp->tx_ring_size = (1 << i);
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lp->tx_mod_mask = lp->tx_ring_size - 1;
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lp->tx_len_bits = (i << 12);
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for (i = 0; i <= PCNET32_LOG_MAX_RX_BUFFERS; i++) {
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if (lp->rx_ring_size <= (1 << i))
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break;
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}
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lp->rx_ring_size = (1 << i);
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lp->rx_mod_mask = lp->rx_ring_size - 1;
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lp->rx_len_bits = (i << 4);
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if (pcnet32_alloc_ring(dev)) {
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pcnet32_free_ring(dev);
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return -ENOMEM;
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}
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spin_unlock_irqrestore(&lp->lock, flags);
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if (pcnet32_debug & NETIF_MSG_DRV)
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printk(KERN_INFO PFX "Ring Param Settings: RX: %d, TX: %d\n", lp->rx_ring_size, lp->tx_ring_size);
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if (netif_running(dev))
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pcnet32_open(dev);
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return 0;
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}
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static void pcnet32_get_strings(struct net_device *dev, u32 stringset, u8 *data)
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@ -948,6 +1009,7 @@ static struct ethtool_ops pcnet32_ethtool_ops = {
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.nway_reset = pcnet32_nway_reset,
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.get_link = pcnet32_get_link,
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.get_ringparam = pcnet32_get_ringparam,
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.set_ringparam = pcnet32_set_ringparam,
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.get_tx_csum = ethtool_op_get_tx_csum,
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.get_sg = ethtool_op_get_sg,
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.get_tso = ethtool_op_get_tso,
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@ -1241,6 +1303,12 @@ pcnet32_probe1(unsigned long ioaddr, int shared, struct pci_dev *pdev)
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dev->priv = lp;
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lp->name = chipname;
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lp->shared_irq = shared;
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lp->tx_ring_size = TX_RING_SIZE; /* default tx ring size */
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lp->rx_ring_size = RX_RING_SIZE; /* default rx ring size */
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lp->tx_mod_mask = lp->tx_ring_size - 1;
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lp->rx_mod_mask = lp->rx_ring_size - 1;
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lp->tx_len_bits = (PCNET32_LOG_TX_BUFFERS << 12);
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lp->rx_len_bits = (PCNET32_LOG_RX_BUFFERS << 4);
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lp->mii_if.full_duplex = fdx;
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lp->mii_if.phy_id_mask = 0x1f;
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lp->mii_if.reg_num_mask = 0x1f;
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@ -1267,21 +1335,23 @@ pcnet32_probe1(unsigned long ioaddr, int shared, struct pci_dev *pdev)
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}
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lp->a = *a;
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if (pcnet32_alloc_ring(dev)) {
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ret = -ENOMEM;
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goto err_free_ring;
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}
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/* detect special T1/E1 WAN card by checking for MAC address */
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if (dev->dev_addr[0] == 0x00 && dev->dev_addr[1] == 0xe0
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&& dev->dev_addr[2] == 0x75)
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lp->options = PCNET32_PORT_FD | PCNET32_PORT_GPSI;
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lp->init_block.mode = le16_to_cpu(0x0003); /* Disable Rx and Tx. */
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lp->init_block.tlen_rlen = le16_to_cpu(TX_RING_LEN_BITS | RX_RING_LEN_BITS);
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lp->init_block.tlen_rlen = le16_to_cpu(lp->tx_len_bits | lp->rx_len_bits);
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for (i = 0; i < 6; i++)
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lp->init_block.phys_addr[i] = dev->dev_addr[i];
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lp->init_block.filter[0] = 0x00000000;
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lp->init_block.filter[1] = 0x00000000;
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lp->init_block.rx_ring = (u32)le32_to_cpu(lp->dma_addr +
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offsetof(struct pcnet32_private, rx_ring));
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lp->init_block.tx_ring = (u32)le32_to_cpu(lp->dma_addr +
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offsetof(struct pcnet32_private, tx_ring));
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lp->init_block.rx_ring = (u32)le32_to_cpu(lp->rx_ring_dma_addr);
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lp->init_block.tx_ring = (u32)le32_to_cpu(lp->tx_ring_dma_addr);
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/* switch pcnet32 to 32bit mode */
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a->write_bcr(ioaddr, 20, 2);
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@ -1312,7 +1382,7 @@ pcnet32_probe1(unsigned long ioaddr, int shared, struct pci_dev *pdev)
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if (pcnet32_debug & NETIF_MSG_PROBE)
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printk(", failed to detect IRQ line.\n");
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ret = -ENODEV;
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goto err_free_consistent;
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goto err_free_ring;
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}
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if (pcnet32_debug & NETIF_MSG_PROBE)
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printk(", probed IRQ %d.\n", dev->irq);
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@ -1343,7 +1413,7 @@ pcnet32_probe1(unsigned long ioaddr, int shared, struct pci_dev *pdev)
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/* Fill in the generic fields of the device structure. */
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if (register_netdev(dev))
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goto err_free_consistent;
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goto err_free_ring;
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if (pdev) {
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pci_set_drvdata(pdev, dev);
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@ -1361,6 +1431,8 @@ pcnet32_probe1(unsigned long ioaddr, int shared, struct pci_dev *pdev)
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return 0;
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err_free_ring:
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pcnet32_free_ring(dev);
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err_free_consistent:
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pci_free_consistent(lp->pci_dev, sizeof(*lp), lp, lp->dma_addr);
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err_free_netdev:
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@ -1371,6 +1443,86 @@ err_release_region:
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}
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static int pcnet32_alloc_ring(struct net_device *dev)
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{
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struct pcnet32_private *lp = dev->priv;
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if ((lp->tx_ring = pci_alloc_consistent(lp->pci_dev, sizeof(struct pcnet32_tx_head) * lp->tx_ring_size,
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&lp->tx_ring_dma_addr)) == NULL) {
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if (pcnet32_debug & NETIF_MSG_DRV)
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printk(KERN_ERR PFX "Consistent memory allocation failed.\n");
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return -ENOMEM;
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}
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if ((lp->rx_ring = pci_alloc_consistent(lp->pci_dev, sizeof(struct pcnet32_rx_head) * lp->rx_ring_size,
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&lp->rx_ring_dma_addr)) == NULL) {
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if (pcnet32_debug & NETIF_MSG_DRV)
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printk(KERN_ERR PFX "Consistent memory allocation failed.\n");
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return -ENOMEM;
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}
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if (!(lp->tx_dma_addr = kmalloc(sizeof(dma_addr_t) * lp->tx_ring_size, GFP_ATOMIC))) {
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if (pcnet32_debug & NETIF_MSG_DRV)
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printk(KERN_ERR PFX "Memory allocation failed.\n");
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return -ENOMEM;
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}
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memset(lp->tx_dma_addr, 0, sizeof(dma_addr_t) * lp->tx_ring_size);
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if (!(lp->rx_dma_addr = kmalloc(sizeof(dma_addr_t) * lp->rx_ring_size, GFP_ATOMIC))) {
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if (pcnet32_debug & NETIF_MSG_DRV)
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printk(KERN_ERR PFX "Memory allocation failed.\n");
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return -ENOMEM;
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}
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memset(lp->rx_dma_addr, 0, sizeof(dma_addr_t) * lp->rx_ring_size);
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if (!(lp->tx_skbuff = kmalloc(sizeof(struct sk_buff *) * lp->tx_ring_size, GFP_ATOMIC))) {
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if (pcnet32_debug & NETIF_MSG_DRV)
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printk(KERN_ERR PFX "Memory allocation failed.\n");
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return -ENOMEM;
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}
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memset(lp->tx_skbuff, 0, sizeof(struct sk_buff *) * lp->tx_ring_size);
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if (!(lp->rx_skbuff = kmalloc(sizeof(struct sk_buff *) * lp->rx_ring_size, GFP_ATOMIC))) {
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if (pcnet32_debug & NETIF_MSG_DRV)
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printk(KERN_ERR PFX "Memory allocation failed.\n");
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return -ENOMEM;
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}
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memset(lp->rx_skbuff, 0, sizeof(struct sk_buff *) * lp->rx_ring_size);
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return 0;
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}
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static void pcnet32_free_ring(struct net_device *dev)
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{
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struct pcnet32_private *lp = dev->priv;
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kfree(lp->tx_skbuff);
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lp->tx_skbuff = NULL;
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kfree(lp->rx_skbuff);
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lp->rx_skbuff = NULL;
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kfree(lp->tx_dma_addr);
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lp->tx_dma_addr = NULL;
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kfree(lp->rx_dma_addr);
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lp->rx_dma_addr = NULL;
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if (lp->tx_ring) {
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pci_free_consistent(lp->pci_dev, sizeof(struct pcnet32_tx_head) * lp->tx_ring_size,
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lp->tx_ring, lp->tx_ring_dma_addr);
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lp->tx_ring = NULL;
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}
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if (lp->rx_ring) {
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pci_free_consistent(lp->pci_dev, sizeof(struct pcnet32_rx_head) * lp->rx_ring_size,
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lp->rx_ring, lp->rx_ring_dma_addr);
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lp->rx_ring = NULL;
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}
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}
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static int
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pcnet32_open(struct net_device *dev)
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{
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@ -1402,8 +1554,8 @@ pcnet32_open(struct net_device *dev)
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if (netif_msg_ifup(lp))
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printk(KERN_DEBUG "%s: pcnet32_open() irq %d tx/rx rings %#x/%#x init %#x.\n",
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dev->name, dev->irq,
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(u32) (lp->dma_addr + offsetof(struct pcnet32_private, tx_ring)),
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(u32) (lp->dma_addr + offsetof(struct pcnet32_private, rx_ring)),
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(u32) (lp->tx_ring_dma_addr),
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(u32) (lp->rx_ring_dma_addr),
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(u32) (lp->dma_addr + offsetof(struct pcnet32_private, init_block)));
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/* set/reset autoselect bit */
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@ -1523,7 +1675,7 @@ pcnet32_open(struct net_device *dev)
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err_free_ring:
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/* free any allocated skbuffs */
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for (i = 0; i < RX_RING_SIZE; i++) {
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for (i = 0; i < lp->rx_ring_size; i++) {
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lp->rx_ring[i].status = 0;
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if (lp->rx_skbuff[i]) {
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pci_unmap_single(lp->pci_dev, lp->rx_dma_addr[i], PKT_BUF_SZ-2,
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@ -1533,6 +1685,9 @@ err_free_ring:
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lp->rx_skbuff[i] = NULL;
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lp->rx_dma_addr[i] = 0;
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}
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pcnet32_free_ring(dev);
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/*
|
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* Switch back to 16bit mode to avoid problems with dumb
|
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* DOS packet driver after a warm reboot
|
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|
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@ -1564,7 +1719,7 @@ pcnet32_purge_tx_ring(struct net_device *dev)
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struct pcnet32_private *lp = dev->priv;
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int i;
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for (i = 0; i < TX_RING_SIZE; i++) {
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for (i = 0; i < lp->tx_ring_size; i++) {
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lp->tx_ring[i].status = 0; /* CPU owns buffer */
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wmb(); /* Make sure adapter sees owner change */
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if (lp->tx_skbuff[i]) {
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|
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@ -1589,7 +1744,7 @@ pcnet32_init_ring(struct net_device *dev)
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lp->cur_rx = lp->cur_tx = 0;
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lp->dirty_rx = lp->dirty_tx = 0;
|
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|
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for (i = 0; i < RX_RING_SIZE; i++) {
|
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for (i = 0; i < lp->rx_ring_size; i++) {
|
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struct sk_buff *rx_skbuff = lp->rx_skbuff[i];
|
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if (rx_skbuff == NULL) {
|
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if (!(rx_skbuff = lp->rx_skbuff[i] = dev_alloc_skb (PKT_BUF_SZ))) {
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@ -1613,20 +1768,18 @@ pcnet32_init_ring(struct net_device *dev)
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}
|
||||
/* The Tx buffer address is filled in as needed, but we do need to clear
|
||||
* the upper ownership bit. */
|
||||
for (i = 0; i < TX_RING_SIZE; i++) {
|
||||
for (i = 0; i < lp->tx_ring_size; i++) {
|
||||
lp->tx_ring[i].status = 0; /* CPU owns buffer */
|
||||
wmb(); /* Make sure adapter sees owner change */
|
||||
lp->tx_ring[i].base = 0;
|
||||
lp->tx_dma_addr[i] = 0;
|
||||
}
|
||||
|
||||
lp->init_block.tlen_rlen = le16_to_cpu(TX_RING_LEN_BITS | RX_RING_LEN_BITS);
|
||||
lp->init_block.tlen_rlen = le16_to_cpu(lp->tx_len_bits | lp->rx_len_bits);
|
||||
for (i = 0; i < 6; i++)
|
||||
lp->init_block.phys_addr[i] = dev->dev_addr[i];
|
||||
lp->init_block.rx_ring = (u32)le32_to_cpu(lp->dma_addr +
|
||||
offsetof(struct pcnet32_private, rx_ring));
|
||||
lp->init_block.tx_ring = (u32)le32_to_cpu(lp->dma_addr +
|
||||
offsetof(struct pcnet32_private, tx_ring));
|
||||
lp->init_block.rx_ring = (u32)le32_to_cpu(lp->rx_ring_dma_addr);
|
||||
lp->init_block.tx_ring = (u32)le32_to_cpu(lp->tx_ring_dma_addr);
|
||||
wmb(); /* Make sure all changes are visible */
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -1684,13 +1837,13 @@ pcnet32_tx_timeout (struct net_device *dev)
|
|||
printk(KERN_DEBUG " Ring data dump: dirty_tx %d cur_tx %d%s cur_rx %d.",
|
||||
lp->dirty_tx, lp->cur_tx, lp->tx_full ? " (full)" : "",
|
||||
lp->cur_rx);
|
||||
for (i = 0 ; i < RX_RING_SIZE; i++)
|
||||
for (i = 0 ; i < lp->rx_ring_size; i++)
|
||||
printk("%s %08x %04x %08x %04x", i & 1 ? "" : "\n ",
|
||||
le32_to_cpu(lp->rx_ring[i].base),
|
||||
(-le16_to_cpu(lp->rx_ring[i].buf_length)) & 0xffff,
|
||||
le32_to_cpu(lp->rx_ring[i].msg_length),
|
||||
le16_to_cpu(lp->rx_ring[i].status));
|
||||
for (i = 0 ; i < TX_RING_SIZE; i++)
|
||||
for (i = 0 ; i < lp->tx_ring_size; i++)
|
||||
printk("%s %08x %04x %08x %04x", i & 1 ? "" : "\n ",
|
||||
le32_to_cpu(lp->tx_ring[i].base),
|
||||
(-le16_to_cpu(lp->tx_ring[i].length)) & 0xffff,
|
||||
|
|
@ -1731,7 +1884,7 @@ pcnet32_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
|||
/* Fill in a Tx ring entry */
|
||||
|
||||
/* Mask to ring buffer boundary. */
|
||||
entry = lp->cur_tx & TX_RING_MOD_MASK;
|
||||
entry = lp->cur_tx & lp->tx_mod_mask;
|
||||
|
||||
/* Caution: the write order is important here, set the status
|
||||
* with the "ownership" bits last. */
|
||||
|
|
@ -1755,7 +1908,7 @@ pcnet32_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
|||
|
||||
dev->trans_start = jiffies;
|
||||
|
||||
if (lp->tx_ring[(entry+1) & TX_RING_MOD_MASK].base != 0) {
|
||||
if (lp->tx_ring[(entry+1) & lp->tx_mod_mask].base != 0) {
|
||||
lp->tx_full = 1;
|
||||
netif_stop_queue(dev);
|
||||
}
|
||||
|
|
@ -1808,7 +1961,7 @@ pcnet32_interrupt(int irq, void *dev_id, struct pt_regs * regs)
|
|||
int delta;
|
||||
|
||||
while (dirty_tx != lp->cur_tx) {
|
||||
int entry = dirty_tx & TX_RING_MOD_MASK;
|
||||
int entry = dirty_tx & lp->tx_mod_mask;
|
||||
int status = (short)le16_to_cpu(lp->tx_ring[entry].status);
|
||||
|
||||
if (status < 0)
|
||||
|
|
@ -1866,18 +2019,18 @@ pcnet32_interrupt(int irq, void *dev_id, struct pt_regs * regs)
|
|||
dirty_tx++;
|
||||
}
|
||||
|
||||
delta = (lp->cur_tx - dirty_tx) & (TX_RING_MOD_MASK + TX_RING_SIZE);
|
||||
if (delta > TX_RING_SIZE) {
|
||||
delta = (lp->cur_tx - dirty_tx) & (lp->tx_mod_mask + lp->tx_ring_size);
|
||||
if (delta > lp->tx_ring_size) {
|
||||
if (netif_msg_drv(lp))
|
||||
printk(KERN_ERR "%s: out-of-sync dirty pointer, %d vs. %d, full=%d.\n",
|
||||
dev->name, dirty_tx, lp->cur_tx, lp->tx_full);
|
||||
dirty_tx += TX_RING_SIZE;
|
||||
delta -= TX_RING_SIZE;
|
||||
dirty_tx += lp->tx_ring_size;
|
||||
delta -= lp->tx_ring_size;
|
||||
}
|
||||
|
||||
if (lp->tx_full &&
|
||||
netif_queue_stopped(dev) &&
|
||||
delta < TX_RING_SIZE - 2) {
|
||||
delta < lp->tx_ring_size - 2) {
|
||||
/* The ring is no longer full, clear tbusy. */
|
||||
lp->tx_full = 0;
|
||||
netif_wake_queue (dev);
|
||||
|
|
@ -1934,8 +2087,8 @@ static int
|
|||
pcnet32_rx(struct net_device *dev)
|
||||
{
|
||||
struct pcnet32_private *lp = dev->priv;
|
||||
int entry = lp->cur_rx & RX_RING_MOD_MASK;
|
||||
int boguscnt = RX_RING_SIZE / 2;
|
||||
int entry = lp->cur_rx & lp->rx_mod_mask;
|
||||
int boguscnt = lp->rx_ring_size / 2;
|
||||
|
||||
/* If we own the next entry, it's a new packet. Send it up. */
|
||||
while ((short)le16_to_cpu(lp->rx_ring[entry].status) >= 0) {
|
||||
|
|
@ -2000,12 +2153,12 @@ pcnet32_rx(struct net_device *dev)
|
|||
if (netif_msg_drv(lp))
|
||||
printk(KERN_ERR "%s: Memory squeeze, deferring packet.\n",
|
||||
dev->name);
|
||||
for (i = 0; i < RX_RING_SIZE; i++)
|
||||
for (i = 0; i < lp->rx_ring_size; i++)
|
||||
if ((short)le16_to_cpu(lp->rx_ring[(entry+i)
|
||||
& RX_RING_MOD_MASK].status) < 0)
|
||||
& lp->rx_mod_mask].status) < 0)
|
||||
break;
|
||||
|
||||
if (i > RX_RING_SIZE -2) {
|
||||
if (i > lp->rx_ring_size -2) {
|
||||
lp->stats.rx_dropped++;
|
||||
lp->rx_ring[entry].status |= le16_to_cpu(0x8000);
|
||||
wmb(); /* Make sure adapter sees owner change */
|
||||
|
|
@ -2043,7 +2196,7 @@ pcnet32_rx(struct net_device *dev)
|
|||
lp->rx_ring[entry].buf_length = le16_to_cpu(2-PKT_BUF_SZ);
|
||||
wmb(); /* Make sure owner changes after all others are visible */
|
||||
lp->rx_ring[entry].status |= le16_to_cpu(0x8000);
|
||||
entry = (++lp->cur_rx) & RX_RING_MOD_MASK;
|
||||
entry = (++lp->cur_rx) & lp->rx_mod_mask;
|
||||
if (--boguscnt <= 0) break; /* don't stay in loop forever */
|
||||
}
|
||||
|
||||
|
|
@ -2086,7 +2239,7 @@ pcnet32_close(struct net_device *dev)
|
|||
spin_lock_irqsave(&lp->lock, flags);
|
||||
|
||||
/* free all allocated skbuffs */
|
||||
for (i = 0; i < RX_RING_SIZE; i++) {
|
||||
for (i = 0; i < lp->rx_ring_size; i++) {
|
||||
lp->rx_ring[i].status = 0;
|
||||
wmb(); /* Make sure adapter sees owner change */
|
||||
if (lp->rx_skbuff[i]) {
|
||||
|
|
@ -2098,7 +2251,7 @@ pcnet32_close(struct net_device *dev)
|
|||
lp->rx_dma_addr[i] = 0;
|
||||
}
|
||||
|
||||
for (i = 0; i < TX_RING_SIZE; i++) {
|
||||
for (i = 0; i < lp->tx_ring_size; i++) {
|
||||
lp->tx_ring[i].status = 0; /* CPU owns buffer */
|
||||
wmb(); /* Make sure adapter sees owner change */
|
||||
if (lp->tx_skbuff[i]) {
|
||||
|
|
@ -2267,6 +2420,7 @@ static void __devexit pcnet32_remove_one(struct pci_dev *pdev)
|
|||
struct pcnet32_private *lp = dev->priv;
|
||||
|
||||
unregister_netdev(dev);
|
||||
pcnet32_free_ring(dev);
|
||||
release_region(dev->base_addr, PCNET32_TOTAL_SIZE);
|
||||
pci_free_consistent(lp->pci_dev, sizeof(*lp), lp, lp->dma_addr);
|
||||
free_netdev(dev);
|
||||
|
|
@ -2342,6 +2496,7 @@ static void __exit pcnet32_cleanup_module(void)
|
|||
struct pcnet32_private *lp = pcnet32_dev->priv;
|
||||
next_dev = lp->next;
|
||||
unregister_netdev(pcnet32_dev);
|
||||
pcnet32_free_ring(pcnet32_dev);
|
||||
release_region(pcnet32_dev->base_addr, PCNET32_TOTAL_SIZE);
|
||||
pci_free_consistent(lp->pci_dev, sizeof(*lp), lp, lp->dma_addr);
|
||||
free_netdev(pcnet32_dev);
|
||||
|
|
|
|||
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