Commit 4d9781c5 authored Feb 16, 2006 by Roland Dreier

IB/uverbs: Fix alignment of struct ib_uverbs_create_qp_resp



The size of struct ib_uverbs_create_qp_resp is not even multiple of 8
bytes.  This causes problems for low-level drivers that add private
data after the structure: 32-bit userspace will look in the wrong
place for a response from a 64-bit kernel.  Fix this by adding a
reserved field.  Also, bump the ABI version because this changes the
size of a structure.

Pointed out by Hoang-Nam Nguyen <HNGUYEN@de.ibm.com>.

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

parent 00df1b2c

include/rdma/ib_user_verbs.h

+2 −1

Original line number	Diff line number	Diff line
		@@ -44,7 +44,7 @@
		* Increment this value if any changes that break userspace ABI
		* compatibility are made.
		*/
		#define IB_USER_VERBS_ABI_VERSION 4
		#define IB_USER_VERBS_ABI_VERSION 5

		enum {
		IB_USER_VERBS_CMD_GET_CONTEXT,
		@@ -350,6 +350,7 @@ struct ib_uverbs_create_qp_resp {
		__u32 max_send_sge;
		__u32 max_recv_sge;
		__u32 max_inline_data;
		__u32 reserved;
		};

		/*

Admin message