From e3dc867c1758fc4ae6fc6b63ea6bbcd454479f08 Mon Sep 17 00:00:00 2001 From: Suresh Reddy Date: Mon, 6 Jan 2014 13:02:25 +0530 Subject: [PATCH] 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: Suresh Reddy Signed-off-by: Sathya Perla Signed-off-by: David S. Miller --- drivers/net/ethernet/emulex/benet/be.h | 1 + drivers/net/ethernet/emulex/benet/be_main.c | 12 ++++++++---- 2 files changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/emulex/benet/be.h b/drivers/net/ethernet/emulex/benet/be.h index 2e031f24cd33..4ccaf9af6fc9 100644 --- a/drivers/net/ethernet/emulex/benet/be.h +++ b/drivers/net/ethernet/emulex/benet/be.h @@ -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 diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index fa44bba4f93b..bf40fdaecfa3 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -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; - if (BE3_chip(adapter) && sriov_want(adapter)) { - int max_vfs; + max_vfs = pci_sriov_get_totalvfs(pdev); - 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)) -- 2.20.1