ice: refactor VSI setup to use parameter structure

The ice_vsi_setup function, ice_vsi_alloc, and ice_vsi_cfg functions have
grown a large number of parameters. These parameters are used to initialize
a new VSI, as well as re-configure an existing VSI

Any time we want to add a new parameter to this function chain, even if it
will usually be unset, we have to change many call sites due to changing
the function signature.

A future change is going to refactor ice_vsi_alloc and ice_vsi_cfg to move
the VSI configuration and initialization all into ice_vsi_cfg.

Before this, refactor the VSI setup flow to use a new ice_vsi_cfg_params
structure. This will contain the configuration (mainly pointers) used to
initialize a VSI.

Pass this from ice_vsi_setup into the related functions such as
ice_vsi_alloc, ice_vsi_cfg, and ice_vsi_cfg_def.

Introduce a helper, ice_vsi_to_params to convert an existing VSI to the
parameters used to initialize it. This will aid in the flows where we
rebuild an existing VSI.

Since we also pass the ICE_VSI_FLAG_INIT to more functions which do not
need (or cannot yet have) the VSI parameters, lets make this clear by
renaming the function parameter to vsi_flags and using a u32 instead of a
signed integer. The name vsi_flags also makes it clear that we may extend
the flags in the future.

This change will make it easier to refactor the setup flow in the future,
and will reduce the complexity required to add a new parameter for
configuration in the future.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

1 files changed, 44 insertions, 8 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_lib.h b/drivers/net/ethernet/intel/ice/ice_lib.h
index b76f05e1f8a3..75221478f2dc 100644
--- a/drivers/net/ethernet/intel/ice/ice_lib.h
+++ b/drivers/net/ethernet/intel/ice/ice_lib.h
@@ -7,6 +7,47 @@
 #include "ice.h"
 #include "ice_vlan.h"
 
+/* Flags used for VSI configuration and rebuild */
+#define ICE_VSI_FLAG_INIT	BIT(0)
+#define ICE_VSI_FLAG_NO_INIT	0
+
+/**
+ * struct ice_vsi_cfg_params - VSI configuration parameters
+ * @pi: pointer to the port_info instance for the VSI
+ * @ch: pointer to the channel structure for the VSI, may be NULL
+ * @vf: pointer to the VF associated with this VSI, may be NULL
+ * @type: the type of VSI to configure
+ * @flags: VSI flags used for rebuild and configuration
+ *
+ * Parameter structure used when configuring a new VSI.
+ */
+struct ice_vsi_cfg_params {
+	struct ice_port_info *pi;
+	struct ice_channel *ch;
+	struct ice_vf *vf;
+	enum ice_vsi_type type;
+	u32 flags;
+};
+
+/**
+ * ice_vsi_to_params - Get parameters for an existing VSI
+ * @vsi: the VSI to get parameters for
+ *
+ * Fill a parameter structure for reconfiguring a VSI with its current
+ * parameters, such as during a rebuild operation.
+ */
+static inline struct ice_vsi_cfg_params ice_vsi_to_params(struct ice_vsi *vsi)
+{
+	struct ice_vsi_cfg_params params = {};
+
+	params.pi = vsi->port_info;
+	params.ch = vsi->ch;
+	params.vf = vsi->vf;
+	params.type = vsi->type;
+
+	return params;
+}
+
 const char *ice_vsi_type_str(enum ice_vsi_type vsi_type);
 
 bool ice_pf_state_is_nominal(struct ice_pf *pf);
@@ -50,9 +91,7 @@ int ice_vsi_cfg_rss_lut_key(struct ice_vsi *vsi);
 void ice_vsi_cfg_netdev_tc(struct ice_vsi *vsi, u8 ena_tc);
 
 struct ice_vsi *
-ice_vsi_setup(struct ice_pf *pf, struct ice_port_info *pi,
-	      enum ice_vsi_type vsi_type, struct ice_vf *vf,
-	      struct ice_channel *ch);
+ice_vsi_setup(struct ice_pf *pf, struct ice_vsi_cfg_params *params);
 
 void ice_napi_del(struct ice_vsi *vsi);
 
@@ -70,11 +109,8 @@ int ice_free_res(struct ice_res_tracker *res, u16 index, u16 id);
 int
 ice_get_res(struct ice_pf *pf, struct ice_res_tracker *res, u16 needed, u16 id);
 
-#define ICE_VSI_FLAG_INIT	BIT(0)
-#define ICE_VSI_FLAG_NO_INIT	0
-int ice_vsi_rebuild(struct ice_vsi *vsi, int init_vsi);
-int ice_vsi_cfg(struct ice_vsi *vsi, struct ice_vf *vf,
-		struct ice_channel *ch, int init_vsi);
+int ice_vsi_rebuild(struct ice_vsi *vsi, u32 vsi_flags);
+int ice_vsi_cfg(struct ice_vsi *vsi, struct ice_vsi_cfg_params *params);
 
 bool ice_is_reset_in_progress(unsigned long *state);
 int ice_wait_for_reset(struct ice_pf *pf, unsigned long timeout);