RDMA/core: Annotate timeout as unsigned long

The ucma users supply timeout in u32 format, it means that any number
with most significant bit set will be converted to negative value
by various rdma_*, cma_* and sa_query functions, which treat timeout
as int.

In the lowest level, the timeout is converted back to be unsigned long.
Remove this ambiguous conversion by updating all function signatures to
receive unsigned long.

Reported-by: Noa Osherovich <noaos@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

4 files changed, 8 insertions, 7 deletions

diff --git a/include/rdma/ib_addr.h b/include/rdma/ib_addr.h
index eebbe63b530c..2734c895c1bf 100644
--- a/include/rdma/ib_addr.h
+++ b/include/rdma/ib_addr.h
@@ -99,7 +99,7 @@ int rdma_translate_ip(const struct sockaddr *addr,
  * @context: User-specified context associated with the call.
  */
 int rdma_resolve_ip(struct sockaddr *src_addr, const struct sockaddr *dst_addr,
-		    struct rdma_dev_addr *addr, int timeout_ms,
+		    struct rdma_dev_addr *addr, unsigned long timeout_ms,
 		    void (*callback)(int status, struct sockaddr *src_addr,
 				     struct rdma_dev_addr *addr, void *context),
 		    bool resolve_by_gid_attr, void *context);
diff --git a/include/rdma/ib_cm.h b/include/rdma/ib_cm.h
index c10f4b5ea8ab..49f4f75499b3 100644
--- a/include/rdma/ib_cm.h
+++ b/include/rdma/ib_cm.h
@@ -583,7 +583,7 @@ struct ib_cm_sidr_req_param {
 	struct sa_path_rec	*path;
 	const struct ib_gid_attr *sgid_attr;
 	__be64			service_id;
-	int			timeout_ms;
+	unsigned long		timeout_ms;
 	const void		*private_data;
 	u8			private_data_len;
 	u8			max_cm_retries;
diff --git a/include/rdma/ib_sa.h b/include/rdma/ib_sa.h
index 95ce625a49e3..19520979b84c 100644
--- a/include/rdma/ib_sa.h
+++ b/include/rdma/ib_sa.h
@@ -451,7 +451,7 @@ void ib_sa_cancel_query(int id, struct ib_sa_query *query);
 
 int ib_sa_path_rec_get(struct ib_sa_client *client, struct ib_device *device,
 		       u8 port_num, struct sa_path_rec *rec,
-		       ib_sa_comp_mask comp_mask, int timeout_ms,
+		       ib_sa_comp_mask comp_mask, unsigned long timeout_ms,
 		       gfp_t gfp_mask,
 		       void (*callback)(int status, struct sa_path_rec *resp,
 					void *context),
@@ -460,7 +460,7 @@ int ib_sa_path_rec_get(struct ib_sa_client *client, struct ib_device *device,
 int ib_sa_service_rec_query(struct ib_sa_client *client,
 			    struct ib_device *device, u8 port_num, u8 method,
 			    struct ib_sa_service_rec *rec,
-			    ib_sa_comp_mask comp_mask, int timeout_ms,
+			    ib_sa_comp_mask comp_mask, unsigned long timeout_ms,
 			    gfp_t gfp_mask,
 			    void (*callback)(int status,
 					     struct ib_sa_service_rec *resp,
@@ -568,7 +568,7 @@ int ib_sa_guid_info_rec_query(struct ib_sa_client *client,
 			      struct ib_device *device, u8 port_num,
 			      struct ib_sa_guidinfo_rec *rec,
 			      ib_sa_comp_mask comp_mask, u8 method,
-			      int timeout_ms, gfp_t gfp_mask,
+			      unsigned long timeout_ms, gfp_t gfp_mask,
 			      void (*callback)(int status,
 					       struct ib_sa_guidinfo_rec *resp,
 					       void *context),
diff --git a/include/rdma/rdma_cm.h b/include/rdma/rdma_cm.h
index 53d93c7d8e01..60987a5903b7 100644
--- a/include/rdma/rdma_cm.h
+++ b/include/rdma/rdma_cm.h
@@ -196,7 +196,8 @@ int rdma_bind_addr(struct rdma_cm_id *id, struct sockaddr *addr);
  * @timeout_ms: Time to wait for resolution to complete.
  */
 int rdma_resolve_addr(struct rdma_cm_id *id, struct sockaddr *src_addr,
-		      const struct sockaddr *dst_addr, int timeout_ms);
+		      const struct sockaddr *dst_addr,
+		      unsigned long timeout_ms);
 
 /**
  * rdma_resolve_route - Resolve the RDMA address bound to the RDMA identifier
@@ -206,7 +207,7 @@ int rdma_resolve_addr(struct rdma_cm_id *id, struct sockaddr *src_addr,
  * Users must have first called rdma_resolve_addr to resolve a dst_addr
  * into an RDMA address before calling this routine.
  */
-int rdma_resolve_route(struct rdma_cm_id *id, int timeout_ms);
+int rdma_resolve_route(struct rdma_cm_id *id, unsigned long timeout_ms);
 
 /**
  * rdma_create_qp - Allocate a QP and associate it with the specified RDMA