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ixgbe: Do not allocate too many netdev txqueues 

Instead of allocating 128 struct netdev_queue per device, use the
minimum value between 128 and the number of possible txq's, to
reduce ram usage and "tc -s -d class shod dev .." output.

This patch fixes Eric Dumazet's patch to set the TX queues to
the correct minimum.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
John Fastabend 2010-02-25 23:15:21 +00:00 committed by David S. Miller
parent a922afb64d
commit c85a261896
1 changed files with 13 additions and 1 deletions
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14
drivers/net/ixgbe/ixgbe_main.c
View File

@ -5996,6 +5996,7 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data];
static int cards_found;
int i, err, pci_using_dac;
unsigned int indices = num_possible_cpus();
#ifdef IXGBE_FCOE
u16 device_caps;
#endif
@ -6034,7 +6035,18 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
pci_set_master(pdev);
pci_save_state(pdev);
netdev = alloc_etherdev_mq(sizeof(struct ixgbe_adapter), MAX_TX_QUEUES);
if (ii->mac == ixgbe_mac_82598EB)
indices = min_t(unsigned int, indices, IXGBE_MAX_RSS_INDICES);
else
indices = min_t(unsigned int, indices, IXGBE_MAX_FDIR_INDICES);
indices = max_t(unsigned int, indices, IXGBE_MAX_DCB_INDICES);
#ifdef IXGBE_FCOE
indices += min_t(unsigned int, num_possible_cpus(),
IXGBE_MAX_FCOE_INDICES);
#endif
indices = min_t(unsigned int, indices, MAX_TX_QUEUES);
netdev = alloc_etherdev_mq(sizeof(struct ixgbe_adapter), indices);
if (!netdev) {
err = -ENOMEM;
goto err_alloc_etherdev;