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IB/core: Add support for extended query device caps

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Add extensible query device capabilities verb to allow adding new features.
ib_uverbs_ex_query_device is added and copy_query_dev_fields is used to
copy capability fields to be used by both ib_uverbs_query_device and
ib_uverbs_ex_query_device.

Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Haggai Eran <haggaie@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Eli Cohen
2014-12-11 17:04:15 +02:00
committed by Roland Dreier
parent c1395a2a8c
commit 5a77abf9a9
5 changed files with 103 additions and 44 deletions
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5
include/rdma/ib_verbs.h
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@@ -1662,7 +1662,10 @@ static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t
static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len)
{
return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0;
size_t copy_sz;
copy_sz = min_t(size_t, len, udata->outlen);
return copy_to_user(udata->outbuf, src, copy_sz) ? -EFAULT : 0;
}
/**