octeontx2-af: FLR handler for exact match table.

FLR handler should remove/free all exact match table resources
corresponding to each interface.

Signed-off-by: Ratheesh Kannoth <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>

Author: rkannoth1

drivers/net/ethernet/marvell/octeontx2/af/rvu.c

@@ -2555,6 +2555,9 @@ static void rvu_blklf_teardown(struct rvu *rvu, u16 pcifunc, u8 blkaddr)
 
 static void __rvu_flr_handler(struct rvu *rvu, u16 pcifunc)
 {
+	if (rvu_npc_exact_has_match_table(rvu))
+		rvu_npc_exact_reset(rvu, pcifunc);
+
 	mutex_lock(&rvu->flr_lock);
 	/* Reset order should reflect inter-block dependencies:
 	 * 1. Reset any packet/work sources (NIX, CPT, TIM)

drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c

@@ -1183,6 +1183,33 @@ void rvu_npc_exact_disable_feature(struct rvu *rvu)
 	rvu->hw->cap.npc_exact_match_enabled = false;
 }
 
+/**
+ *	rvu_npc_exact_reset - Delete and free all entry which match pcifunc.
+ *      @rvu: resource virtualization unit.
+ *	@pcifunc: PCI func to match.
+ */
+void rvu_npc_exact_reset(struct rvu *rvu, u16 pcifunc)
+{
+	struct npc_exact_table *table = rvu->hw->table;
+	struct npc_exact_table_entry *tmp, *iter;
+	u32 seq_id;
+
+	mutex_lock(&table->lock);
+	list_for_each_entry_safe(iter, tmp, &table->lhead_gbl, glist) {
+		if (pcifunc != iter->pcifunc)
+			continue;
+
+		seq_id = iter->seq_id;
+		dev_dbg(rvu->dev, "%s: resetting pcifun=%d seq_id=%u\n", __func__,
+			pcifunc, seq_id);
+
+		mutex_unlock(&table->lock);
+		rvu_npc_exact_del_table_entry_by_id(rvu, seq_id);
+		mutex_lock(&table->lock);
+	}
+	mutex_unlock(&table->lock);
+}
+
 /**
  *      rvu_npc_exact_init - initialize exact match table
  *      @rvu: resource virtualization unit.

drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.h

@@ -187,5 +187,6 @@ int rvu_npc_exact_init(struct rvu *rvu);
 
 bool rvu_npc_exact_can_disable_feature(struct rvu *rvu);
 void rvu_npc_exact_disable_feature(struct rvu *rvu);
+void rvu_npc_exact_reset(struct rvu *rvu, u16 pcifunc);
 
 #endif /* RVU_NPC_HASH_H */