diff mbox series

[v4,03/15] pcie: Add a helper to the SR/IOV API

Message ID 20220126171120.2939152-4-lukasz.maniak@linux.intel.com (mailing list archive)
State New, archived
Headers show
Series hw/nvme: SR-IOV with Virtualization Enhancements | expand

Commit Message

Lukasz Maniak Jan. 26, 2022, 5:11 p.m. UTC 
From: Łukasz Gieryk <lukasz.gieryk@linux.intel.com>

Convenience function for retrieving the PCIDevice object of the N-th VF.

Signed-off-by: Łukasz Gieryk <lukasz.gieryk@linux.intel.com>
Reviewed-by: Knut Omang <knuto@ifi.uio.no>
---
 hw/pci/pcie_sriov.c         | 10 +++++++++-
 include/hw/pci/pcie_sriov.h |  6 ++++++
 2 files changed, 15 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/hw/pci/pcie_sriov.c b/hw/pci/pcie_sriov.c
index 3f256d483f..87abad6ac8 100644
--- a/hw/pci/pcie_sriov.c
+++ b/hw/pci/pcie_sriov.c
@@ -287,8 +287,16 @@  uint16_t pcie_sriov_vf_number(PCIDevice *dev)
     return dev->exp.sriov_vf.vf_number;
 }
 
-
 PCIDevice *pcie_sriov_get_pf(PCIDevice *dev)
 {
     return dev->exp.sriov_vf.pf;
 }
+
+PCIDevice *pcie_sriov_get_vf_at_index(PCIDevice *dev, int n)
+{
+    assert(!pci_is_vf(dev));
+    if (n < dev->exp.sriov_pf.num_vfs) {
+        return dev->exp.sriov_pf.vf[n];
+    }
+    return NULL;
+}
diff --git a/include/hw/pci/pcie_sriov.h b/include/hw/pci/pcie_sriov.h
index 990cff0a1c..80f5c84e75 100644
--- a/include/hw/pci/pcie_sriov.h
+++ b/include/hw/pci/pcie_sriov.h
@@ -68,4 +68,10 @@  uint16_t pcie_sriov_vf_number(PCIDevice *dev);
  */
 PCIDevice *pcie_sriov_get_pf(PCIDevice *dev);
 
+/*
+ * Get the n-th VF of this physical function - only valid for PF.
+ * Returns NULL if index is invalid
+ */
+PCIDevice *pcie_sriov_get_vf_at_index(PCIDevice *dev, int n);
+
 #endif /* QEMU_PCIE_SRIOV_H */