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| author | John Fastabend <john.r.fastabend@intel.com> | 2010-02-25 23:15:21 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-02-26 02:10:11 -0800 |
| commit | c85a26189660e1cfd1f50989468313c544487950 (patch) | |
| tree | 57e66d2461ca7dec9ac38f289dca5d14f4feebd2 /drivers/net/ixgbe | |
| parent | a922afb64d2e71115f122e04346163cb8c8453e3 (diff) | |
| download | linux-c85a26189660e1cfd1f50989468313c544487950.tar.gz linux-c85a26189660e1cfd1f50989468313c544487950.tar.bz2 linux-c85a26189660e1cfd1f50989468313c544487950.zip | |
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>
Diffstat (limited to 'drivers/net/ixgbe')
| -rw-r--r-- | drivers/net/ixgbe/ixgbe_main.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c index 4a0102218d39..a961da2f98c0 100644 --- a/drivers/net/ixgbe/ixgbe_main.c +++ b/drivers/net/ixgbe/ixgbe_main.c @@ -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; |