redonkable/alistair23-linux
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be2net: fix max_evt_qs calculation for BE3 in SR-IOV config

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The driver wrongly assumes 16 EQs/vectors are available for each BE3 PF.
When SR-IOV is enabled, a BE3 PF can support only a max of 8 EQs.

Signed-off-by: Suresh Reddy <suresh.reddy@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Suresh Reddy 2014-01-06 13:02:25 +05:30 committed by David S. Miller
parent 5eeff6354f
commit e3dc867c17
2 changed files with 9 additions and 4 deletions
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1
drivers/net/ethernet/emulex/benet/be.h
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@ -104,6 +104,7 @@ static inline char *nic_name(struct pci_dev *pdev)
#define BE3_MAX_RSS_QS 16
#define BE3_MAX_TX_QS 16
#define BE3_MAX_EVT_QS 16
#define BE3_SRIOV_MAX_EVT_QS 8
#define MAX_RX_QS 32
#define MAX_EVT_QS 32

12
drivers/net/ethernet/emulex/benet/be_main.c
View file

@ -3127,11 +3127,11 @@ static void BEx_get_resources(struct be_adapter *adapter,
{
struct pci_dev *pdev = adapter->pdev;
bool use_sriov = false;
int max_vfs;
max_vfs = pci_sriov_get_totalvfs(pdev);
if (BE3_chip(adapter) && sriov_want(adapter)) {
int max_vfs;
max_vfs = pci_sriov_get_totalvfs(pdev);
res->max_vfs = max_vfs > 0 ? min(MAX_VFS, max_vfs) : 0;
use_sriov = res->max_vfs;
}
@ -3162,7 +3162,11 @@ static void BEx_get_resources(struct be_adapter *adapter,
BE3_MAX_RSS_QS : BE2_MAX_RSS_QS;
res->max_rx_qs = res->max_rss_qs + 1;
res->max_evt_qs = be_physfn(adapter) ? BE3_MAX_EVT_QS : 1;
if (be_physfn(adapter))
res->max_evt_qs = (max_vfs > 0) ?
BE3_SRIOV_MAX_EVT_QS : BE3_MAX_EVT_QS;
else
res->max_evt_qs = 1;
res->if_cap_flags = BE_IF_CAP_FLAGS_WANT;
if (!(adapter->function_caps & BE_FUNCTION_CAPS_RSS))