From 3f4a6f009f6319d2fb7f6fe654264e1eabe0e50b Mon Sep 17 00:00:00 2001 From: John Fastabend Date: Tue, 5 Jun 2012 05:58:52 +0000 Subject: [PATCH] ixgbe: remove extra unused queues in DCB + FCoE case With DCB and FCoE configured extra queues may be allocated and never used. After this patch we calculate the max correctly. Signed-off-by: John Fastabend Tested-by: Phil Schmitt Tested-by: Ross Brattain Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index 84370e78a0fb..bc7e79b92b63 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -7048,6 +7048,7 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev, int i, err, pci_using_dac; u8 part_str[IXGBE_PBANUM_LENGTH]; unsigned int indices = num_possible_cpus(); + unsigned int dcb_max = 0; #ifdef IXGBE_FCOE u16 device_caps; #endif @@ -7097,15 +7098,16 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev, pci_save_state(pdev); #ifdef CONFIG_IXGBE_DCB - indices *= MAX_TRAFFIC_CLASS; + if (ii->mac == ixgbe_mac_82598EB) + dcb_max = min_t(unsigned int, indices * MAX_TRAFFIC_CLASS, + IXGBE_MAX_RSS_INDICES); + else + dcb_max = min_t(unsigned int, indices * MAX_TRAFFIC_CLASS, + IXGBE_MAX_FDIR_INDICES); #endif if (ii->mac == ixgbe_mac_82598EB) -#ifdef CONFIG_IXGBE_DCB - indices = min_t(unsigned int, indices, MAX_TRAFFIC_CLASS * 4); -#else indices = min_t(unsigned int, indices, IXGBE_MAX_RSS_INDICES); -#endif else indices = min_t(unsigned int, indices, IXGBE_MAX_FDIR_INDICES); @@ -7113,6 +7115,7 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev, indices += min_t(unsigned int, num_possible_cpus(), IXGBE_MAX_FCOE_INDICES); #endif + indices = max_t(unsigned int, dcb_max, indices); netdev = alloc_etherdev_mq(sizeof(struct ixgbe_adapter), indices); if (!netdev) { err = -ENOMEM; -- 2.39.2