RDMA/cma: Remove padding arrays by using struct sockaddr_storage

There are a few places where the RDMA CM code handles IPv6 by doing

	struct sockaddr		addr;
	u8			pad[sizeof(struct sockaddr_in6) -
				    sizeof(struct sockaddr)];

This is fragile and ugly; handle this in a better way with just

	struct sockaddr_storage	addr;

[ Also roll in patch from Aleksey Senin <alekseys@voltaire.com> to
  switch to struct sockaddr_storage and get rid of padding arrays in
  struct rdma_addr. ]

Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 2 insertions, 6 deletions

diff --git a/include/rdma/rdma_cm.h b/include/rdma/rdma_cm.h
index df7faf0..c6b2962 100644
--- a/include/rdma/rdma_cm.h
+++ b/include/rdma/rdma_cm.h
@@ -71,12 +71,8 @@ enum rdma_port_space {
 };
 
 struct rdma_addr {
-	struct sockaddr src_addr;
-	u8		src_pad[sizeof(struct sockaddr_in6) -
-				sizeof(struct sockaddr)];
-	struct sockaddr dst_addr;
-	u8		dst_pad[sizeof(struct sockaddr_in6) -
-				sizeof(struct sockaddr)];
+	struct sockaddr_storage src_addr;
+	struct sockaddr_storage dst_addr;
 	struct rdma_dev_addr dev_addr;
 };