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Commit e3dc867c authored by Suresh Reddy's avatar Suresh Reddy Committed by David S. Miller
Browse files

be2net: fix max_evt_qs calculation for BE3 in SR-IOV config 



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: default avatarSuresh Reddy <suresh.reddy@emulex.com>
Signed-off-by: default avatarSathya Perla <sathya.perla@emulex.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5eeff635

drivers/net/ethernet/emulex/benet/be.h

+1 −0
Original line number Diff line number Diff line
@@ -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

drivers/net/ethernet/emulex/benet/be_main.c

+8 −4
Original line number Diff line number Diff line
@@ -3127,11 +3127,11 @@ static void BEx_get_resources(struct be_adapter *adapter, 
{

	struct pci_dev *pdev = adapter->pdev;

	bool use_sriov = false;



	if (BE3_chip(adapter) && sriov_want(adapter)) {

	int max_vfs;



	max_vfs = pci_sriov_get_totalvfs(pdev);



	if (BE3_chip(adapter) && sriov_want(adapter)) {

		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))