Skip to contentSkip to conversation

be2net: Patch to determine if function is VF while running in guest OS.

PATCH Applied Sarveshwar Bandi 2 participants 2 messages Jul 9, 2010 – Jul 11, 2010

Subsystems (2)
Networking Network drivers
lore
Share & tools
lore

Sarveshwar Bandi

author
#0 lore raw

PATCH 1/1 be2net: Patch to determine if function is VF while running in guest OS.

When driver is loaded in guest OS, the pci variables is_virtfn and is_physfn are both set to 0. This change uses registers in controller to determine the same.

Signed-off-by Sarveshwar Bandi <[email protected]>
---
 drivers/net/benet/be.h      |   12 +++++++++++-
 drivers/net/benet/be_main.c |    1 +
 2 files changed, 12 insertions(+), 1 deletions(-)
drivers/net/benet/be.h +11 -1
index 1a0d2d0..f17428c 100644
@@ -291,9 +291,10 @@ struct be_adapter {
 	u32 vf_if_handle[BE_MAX_VF];
 	u32 vf_pmac_id[BE_MAX_VF];
 	u8 base_eq_id;
+	u8 is_virtfn;
 };
 
-#define be_physfn(adapter) (!adapter->pdev->is_virtfn)
+#define be_physfn(adapter) (!adapter->is_virtfn)
 
 /* BladeEngine Generation numbers */
 #define BE_GEN2 2

@@ -393,6 +394,15 @@ static inline u8 is_udp_pkt(struct sk_bu
 	return val;
 }
 
+static inline void be_check_sriov_fn_type(struct be_adapter *adapter)
+{
+	u8 data;
+
+	pci_write_config_byte(adapter->pdev, 0xFE, 0xAA);
+	pci_read_config_byte(adapter->pdev, 0xFE, &data);
+	adapter->is_virtfn = (data != 0xAA);
+}
+
 extern void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm,
 		u16 num_popped);
 extern void be_link_status_update(struct be_adapter *adapter, bool link_up);
drivers/net/benet/be_main.c +1 -0
index b636879..e6ca923 100644
@@ -1631,6 +1631,7 @@ static void be_sriov_enable(struct be_ad
 {
 #ifdef CONFIG_PCI_IOV
 	int status;
+	be_check_sriov_fn_type(adapter);
 	if (be_physfn(adapter) && num_vfs) {
 		status = pci_enable_sriov(adapter->pdev, num_vfs);
 		adapter->sriov_enabled = status ? false : true;
Signature · 1 line
1.4.0
maintainer Applied
#1 lore raw

From: Sarveshwar Bandi <[email protected]>
Date: Fri, 9 Jul 2010 17:13:55 +0530

Quoted 4 lines

When driver is loaded in guest OS, the pci variables is_virtfn and is_physfn are both set to 0. This change uses registers in controller to determine the same.

Signed-off-by Sarveshwar Bandi <[email protected]>

Applied.