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authorEli Cohen <eli@dev.mellanox.co.il>2014-12-11 18:04:15 +0300
committerRoland Dreier <roland@purestorage.com>2014-12-16 05:13:35 +0300
commit5a77abf9a97a7ecc8fb0f6bf4ad411fb12b02f31 (patch)
tree2fbcf2c088cde299781ef0104c165f595aebd415 /include/rdma
parentc1395a2a8c01e8a919e47d64eb3d23d00e824b8b (diff)
downloadlinux-5a77abf9a97a7ecc8fb0f6bf4ad411fb12b02f31.tar.xz
IB/core: Add support for extended query device caps
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>
Diffstat (limited to 'include/rdma')
-rw-r--r--include/rdma/ib_verbs.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 470a011d6fa4..97a999f9e4d8 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -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;
}
/**