[dpdk-dev] [PATCH v2 02/14] net/ice/base: support removing VSI from flow profile

[Qi Zhang <qi.z.zhang@intel.com>]

Adding a function ice_flow_rem_vsi_prof() to remove flow entries
associated to the sw vsi handle. Once complete clear the vsi index from
the flow profile bitmap. This will ensure that the a vsi once removed
can be re-added and the package block rules will be added again.

Signed-off-by: Vignesh Sridhar <vignesh.sridhar@intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
---
 drivers/net/ice/base/ice_flow.c | 55 +++++++++++++++++++++++++++++++++
 drivers/net/ice/base/ice_flow.h |  2 ++
 2 files changed, 57 insertions(+)

diff --git a/drivers/net/ice/base/ice_flow.c b/drivers/net/ice/base/ice_flow.c
index c12ddfa247..69156176c9 100644
--- a/drivers/net/ice/base/ice_flow.c
+++ b/drivers/net/ice/base/ice_flow.c
@@ -3295,6 +3295,61 @@ ice_flow_add_fld_raw(struct ice_flow_seg_info *seg, u16 off, u8 len,
 	seg->raws_cnt++;
 }
 
+/**
+ * ice_flow_rem_vsi_prof - remove vsi from flow profile
+ * @hw: pointer to the hardware structure
+ * @blk: classification stage
+ * @vsi_handle: software VSI handle
+ * @prof_id: unique ID to identify this flow profile
+ *
+ * This function removes the flow entries associated to the input
+ * vsi handle and disassociates the vsi from the flow profile.
+ */
+enum ice_status ice_flow_rem_vsi_prof(struct ice_hw *hw, enum ice_block blk, u16 vsi_handle,
+				      u64 prof_id)
+{
+	struct ice_flow_prof *prof = NULL;
+	enum ice_status status = ICE_SUCCESS;
+
+	if (blk >= ICE_BLK_COUNT || !ice_is_vsi_valid(hw, vsi_handle))
+		return ICE_ERR_PARAM;
+
+	/* find flow profile pointer with input package block and profile id */
+	prof = ice_flow_find_prof_id(hw, ICE_BLK_FD, prof_id);
+	if (!prof) {
+		ice_debug(hw, ICE_DBG_PKG,
+			  "Cannot find flow profile id=%lu\n", prof_id);
+		return ICE_ERR_DOES_NOT_EXIST;
+	}
+
+	/* Remove all remaining flow entries before removing the flow profile */
+	if (!LIST_EMPTY(&prof->entries)) {
+		struct ice_flow_entry *e, *t;
+
+		ice_acquire_lock(&prof->entries_lock);
+		LIST_FOR_EACH_ENTRY_SAFE(e, t, &prof->entries, ice_flow_entry,
+					 l_entry) {
+			if (e->vsi_handle != vsi_handle)
+				continue;
+
+			status = ice_flow_rem_entry_sync(hw, blk, e);
+			if (status)
+				break;
+		}
+		ice_release_lock(&prof->entries_lock);
+	}
+	if (status)
+		return status;
+
+	/* disassociate the flow profile from sw vsi handle */
+	status = ice_flow_disassoc_prof(hw, blk, prof, vsi_handle);
+	if (status)
+		ice_debug(hw, ICE_DBG_PKG,
+			  "ice_flow_disassoc_prof() failed with status=%d\n",
+			  status);
+	return status;
+}
+
 #define ICE_FLOW_RSS_SEG_HDR_L2_MASKS \
 (ICE_FLOW_SEG_HDR_ETH | ICE_FLOW_SEG_HDR_VLAN)
 
diff --git a/drivers/net/ice/base/ice_flow.h b/drivers/net/ice/base/ice_flow.h
index af15ecb0ff..40a75f53f9 100644
--- a/drivers/net/ice/base/ice_flow.h
+++ b/drivers/net/ice/base/ice_flow.h
@@ -553,6 +553,8 @@ ice_flow_set_fld_prefix(struct ice_flow_seg_info *seg, enum ice_flow_field fld,
 void
 ice_flow_add_fld_raw(struct ice_flow_seg_info *seg, u16 off, u8 len,
 		     u16 val_loc, u16 mask_loc);
+enum ice_status ice_flow_rem_vsi_prof(struct ice_hw *hw, enum ice_block blk,
+				      u16 vsi_handle, u64 prof_id);
 void ice_rem_vsi_rss_list(struct ice_hw *hw, u16 vsi_handle);
 enum ice_status ice_replay_rss_cfg(struct ice_hw *hw, u16 vsi_handle);
 enum ice_status
-- 
2.26.2