[PATCH iwl-net 1/5] ice: Add function to get VF from device struct
From: Larysa Zaremba <hidden>
Date: 2024-02-28 16:04:13
Also in:
intel-wired-lan, lkml
Subsystem:
intel ethernet drivers, networking drivers, the rest · Maintainers:
Tony Nguyen, Przemek Kitszel, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Mateusz Polchlopek <redacted> Introduce a helper ice_get_vf_by_dev() to look up VF for a given struct device. Signed-off-by: Mateusz Polchlopek <redacted> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com> Signed-off-by: Larysa Zaremba <redacted> --- drivers/net/ethernet/intel/ice/ice_vf_lib.c | 30 +++++++++++++++++++++ drivers/net/ethernet/intel/ice/ice_vf_lib.h | 6 +++++ 2 files changed, 36 insertions(+)
diff --git a/drivers/net/ethernet/intel/ice/ice_vf_lib.c b/drivers/net/ethernet/intel/ice/ice_vf_lib.c
index 2ffdae9a82df..21d22e3ad0ba 100644
--- a/drivers/net/ethernet/intel/ice/ice_vf_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_vf_lib.c@@ -45,6 +45,36 @@ struct ice_vf *ice_get_vf_by_id(struct ice_pf *pf, u16 vf_id) return NULL; } +/** + * ice_get_vf_by_dev - Get pointer to VF by device + * @dev: the device structure + * + * Locate and return a pointer to the VF structure associated with a given + * device. + * Return: valid VF structure associated with the device, NULL if none exists + */ +struct ice_vf *ice_get_vf_by_dev(struct device *dev) +{ + struct pci_dev *vfdev; + struct pci_dev *pdev; + struct ice_pf *pf; + struct ice_vf *vf; + unsigned int bkt; + + vfdev = container_of(dev, struct pci_dev, dev); + pdev = vfdev->physfn; + pf = pci_get_drvdata(pdev); + + rcu_read_lock(); + ice_for_each_vf_rcu(pf, bkt, vf) { + if (vf->vfdev == vfdev) + break; + } + rcu_read_unlock(); + + return vf; +} + /** * ice_release_vf - Release VF associated with a refcount * @ref: the kref decremented to zero
diff --git a/drivers/net/ethernet/intel/ice/ice_vf_lib.h b/drivers/net/ethernet/intel/ice/ice_vf_lib.h
index 0cc9034065c5..48f4cdbd6d27 100644
--- a/drivers/net/ethernet/intel/ice/ice_vf_lib.h
+++ b/drivers/net/ethernet/intel/ice/ice_vf_lib.h@@ -213,6 +213,7 @@ static inline u16 ice_vf_get_port_vlan_tpid(struct ice_vf *vf) #ifdef CONFIG_PCI_IOV struct ice_vf *ice_get_vf_by_id(struct ice_pf *pf, u16 vf_id); +struct ice_vf *ice_get_vf_by_dev(struct device *dev); void ice_put_vf(struct ice_vf *vf); bool ice_has_vfs(struct ice_pf *pf); u16 ice_get_num_vfs(struct ice_pf *pf);
@@ -237,6 +238,11 @@ static inline struct ice_vf *ice_get_vf_by_id(struct ice_pf *pf, u16 vf_id) return NULL; } +static inline struct ice_vf *ice_get_vf_by_dev(struct device *dev) +{ + return NULL; +} + static inline void ice_put_vf(struct ice_vf *vf) { }
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2.43.0