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

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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: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Ralph Campbell 2006-09-22 15:22:24 -07:00 committed by Roland Dreier
parent fab97220c9
commit 64f817ba98
2 changed files with 3 additions and 2 deletions
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3
drivers/infiniband/core/uverbs_cmd.c
View file

@ -879,11 +879,10 @@ ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file,
if (ret)
goto out;
memset(&resp, 0, sizeof resp);
resp.cqe = cq->cqe;
if (copy_to_user((void __user *) (unsigned long) cmd.response,
&resp, sizeof resp))
&resp, sizeof resp.cqe))
ret = -EFAULT;
out:

2
include/rdma/ib_user_verbs.h
View file

@ -275,6 +275,8 @@ struct ib_uverbs_resize_cq {
struct ib_uverbs_resize_cq_resp {
__u32 cqe;
__u32 reserved;
__u64 driver_data[0];
};
struct ib_uverbs_poll_cq {