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IB/uverbs: Fix alignment of struct ib_uverbs_create_qp_resp

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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>
This commit is contained in:
Roland Dreier 2006-02-16 09:26:19 -08:00
parent 00df1b2c8b
commit 4d9781c5ce
1 changed files with 2 additions and 1 deletions
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3
include/rdma/ib_user_verbs.h
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@ -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;
};
/*