[PATCH for-next v7 05/19] rdma_rxe: remove void * parameters in pool APIs

[Bob Pearson <rpearsonhpe@xxxxxxxxx>]

More work to make rxe pools type safe.
Replaced routines that took void * as parameters and
and replaced them with rxe_pool_entry *elem. Then added macros
to convert objects to pool entries. This makes these routines
type safe against moving the pool entries around in the objects.

Signed-off-by: Bob Pearson <rpearson@xxxxxxx>
---
 drivers/infiniband/sw/rxe/rxe_pool.c  | 14 +++++--------
 drivers/infiniband/sw/rxe/rxe_pool.h  | 29 ++++++++++++++-------------
 drivers/infiniband/sw/rxe/rxe_verbs.c | 10 ++++-----
 3 files changed, 25 insertions(+), 28 deletions(-)

diff --git a/drivers/infiniband/sw/rxe/rxe_pool.c b/drivers/infiniband/sw/rxe/rxe_pool.c
index c4f1318ea761..e40a64616d79 100644
--- a/drivers/infiniband/sw/rxe/rxe_pool.c
+++ b/drivers/infiniband/sw/rxe/rxe_pool.c
@@ -264,9 +264,8 @@ static void insert_key(struct rxe_pool *pool, struct rxe_pool_entry *new)
 	return;
 }
 
-void rxe_add_key(void *arg, void *key)
+void __rxe_add_key(struct rxe_pool_entry *elem, void *key)
 {
-	struct rxe_pool_entry *elem = arg;
 	struct rxe_pool *pool = elem->pool;
 	unsigned long flags;
 
@@ -276,9 +275,8 @@ void rxe_add_key(void *arg, void *key)
 	write_unlock_irqrestore(&pool->pool_lock, flags);
 }
 
-void rxe_drop_key(void *arg)
+void __rxe_drop_key(struct rxe_pool_entry *elem)
 {
-	struct rxe_pool_entry *elem = arg;
 	struct rxe_pool *pool = elem->pool;
 	unsigned long flags;
 
@@ -287,9 +285,8 @@ void rxe_drop_key(void *arg)
 	write_unlock_irqrestore(&pool->pool_lock, flags);
 }
 
-void rxe_add_index(void *arg)
+void __rxe_add_index(struct rxe_pool_entry *elem)
 {
-	struct rxe_pool_entry *elem = arg;
 	struct rxe_pool *pool = elem->pool;
 	unsigned long flags;
 
@@ -299,9 +296,8 @@ void rxe_add_index(void *arg)
 	write_unlock_irqrestore(&pool->pool_lock, flags);
 }
 
-void rxe_drop_index(void *arg)
+void __rxe_drop_index(struct rxe_pool_entry *elem)
 {
-	struct rxe_pool_entry *elem = arg;
 	struct rxe_pool *pool = elem->pool;
 	unsigned long flags;
 
@@ -354,7 +350,7 @@ void *rxe_alloc(struct rxe_pool *pool)
 	return NULL;
 }
 
-int rxe_add_to_pool(struct rxe_pool *pool, struct rxe_pool_entry *elem)
+int __rxe_add_to_pool(struct rxe_pool *pool, struct rxe_pool_entry *elem)
 {
 	unsigned long flags;
 
diff --git a/drivers/infiniband/sw/rxe/rxe_pool.h b/drivers/infiniband/sw/rxe/rxe_pool.h
index 68c6dbeb72d4..2f9be92ef6f9 100644
--- a/drivers/infiniband/sw/rxe/rxe_pool.h
+++ b/drivers/infiniband/sw/rxe/rxe_pool.h
@@ -109,24 +109,25 @@ void rxe_pool_cleanup(struct rxe_pool *pool);
 /* allocate an object from pool */
 void *rxe_alloc(struct rxe_pool *pool);
 
-/* connect already allocated object to pool */
-int rxe_add_to_pool(struct rxe_pool *pool, struct rxe_pool_entry *elem);
+int __rxe_add_to_pool(struct rxe_pool *pool, struct rxe_pool_entry *elem);
 
-/* assign an index to an indexed object and insert object into
- *  pool's rb tree
- */
-void rxe_add_index(void *elem);
+#define rxe_add_to_pool(pool, obj) __rxe_add_to_pool(pool, &(obj)->pelem)
 
-/* drop an index and remove object from rb tree */
-void rxe_drop_index(void *elem);
+void __rxe_add_index(struct rxe_pool_entry *elem);
 
-/* assign a key to a keyed object and insert object into
- *  pool's rb tree
- */
-void rxe_add_key(void *elem, void *key);
+#define rxe_add_index(obj) __rxe_add_index(&(obj)->pelem)
+
+void __rxe_drop_index(struct rxe_pool_entry *elem);
+
+#define rxe_drop_index(obj) __rxe_drop_index(&(obj)->pelem)
+
+void __rxe_add_key(struct rxe_pool_entry *elem, void *key);
+
+#define rxe_add_key(obj, key) __rxe_add_key(&(obj)->pelem, key)
+
+void __rxe_drop_key(struct rxe_pool_entry *elem);
 
-/* remove elem from rb tree */
-void rxe_drop_key(void *elem);
+#define rxe_drop_key(obj) __rxe_drop_key(&(obj)->pelem)
 
 /* lookup an indexed object from index. takes a reference on object */
 void *rxe_get_index(struct rxe_pool *pool, u32 index);
diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.c b/drivers/infiniband/sw/rxe/rxe_verbs.c
index 664bcb025aae..db1d7f5ca2a7 100644
--- a/drivers/infiniband/sw/rxe/rxe_verbs.c
+++ b/drivers/infiniband/sw/rxe/rxe_verbs.c
@@ -111,7 +111,7 @@ static int rxe_alloc_ucontext(struct ib_ucontext *uctx, struct ib_udata *udata)
 	struct rxe_dev *rxe = to_rdev(uctx->device);
 	struct rxe_ucontext *uc = to_ruc(uctx);
 
-	return rxe_add_to_pool(&rxe->uc_pool, &uc->pelem);
+	return rxe_add_to_pool(&rxe->uc_pool, uc);
 }
 
 static void rxe_dealloc_ucontext(struct ib_ucontext *ibuc)
@@ -145,7 +145,7 @@ static int rxe_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata)
 	struct rxe_dev *rxe = to_rdev(ibpd->device);
 	struct rxe_pd *pd = to_rpd(ibpd);
 
-	return rxe_add_to_pool(&rxe->pd_pool, &pd->pelem);
+	return rxe_add_to_pool(&rxe->pd_pool, pd);
 }
 
 static int rxe_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata)
@@ -169,7 +169,7 @@ static int rxe_create_ah(struct ib_ah *ibah,
 	if (err)
 		return err;
 
-	err = rxe_add_to_pool(&rxe->ah_pool, &ah->pelem);
+	err = rxe_add_to_pool(&rxe->ah_pool, ah);
 	if (err)
 		return err;
 
@@ -275,7 +275,7 @@ static int rxe_create_srq(struct ib_srq *ibsrq, struct ib_srq_init_attr *init,
 	if (err)
 		goto err1;
 
-	err = rxe_add_to_pool(&rxe->srq_pool, &srq->pelem);
+	err = rxe_add_to_pool(&rxe->srq_pool, srq);
 	if (err)
 		goto err1;
 
@@ -776,7 +776,7 @@ static int rxe_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
 	if (err)
 		return err;
 
-	return rxe_add_to_pool(&rxe->cq_pool, &cq->pelem);
+	return rxe_add_to_pool(&rxe->cq_pool, cq);
 }
 
 static int rxe_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata)
-- 
2.25.1