提交 64f817ba 编写于 作者: R Ralph Campbell 提交者: Roland Dreier

IB/uverbs: Allow resize CQ operation to return driver-specific data

Add a ib_uverbs_resize_cq_resp.driver_data field so that low-level
drivers can return data from a resize CQ operation to userspace.  Have
ib_uverbs_resize_cq() only copy the cqe field, to avoid having to bump
the userspace ABI.
Signed-off-by: NRalph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>
上级 fab97220
...@@ -879,11 +879,10 @@ ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file, ...@@ -879,11 +879,10 @@ ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file,
if (ret) if (ret)
goto out; goto out;
memset(&resp, 0, sizeof resp);
resp.cqe = cq->cqe; resp.cqe = cq->cqe;
if (copy_to_user((void __user *) (unsigned long) cmd.response, if (copy_to_user((void __user *) (unsigned long) cmd.response,
&resp, sizeof resp)) &resp, sizeof resp.cqe))
ret = -EFAULT; ret = -EFAULT;
out: out:
......
...@@ -275,6 +275,8 @@ struct ib_uverbs_resize_cq { ...@@ -275,6 +275,8 @@ struct ib_uverbs_resize_cq {
struct ib_uverbs_resize_cq_resp { struct ib_uverbs_resize_cq_resp {
__u32 cqe; __u32 cqe;
__u32 reserved;
__u64 driver_data[0];
}; };
struct ib_uverbs_poll_cq { struct ib_uverbs_poll_cq {
......
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