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IB/uverbs: Set error code when fail to consume all flow_spec items 

If the flow_spec items parsed count does not match the number of items
declared in the flow_attr command, or if not all bytes are used for
flow_spec items (eg. trailing garbage), a log message is reported and
the function leave through the error path. Unfortunately the error
code is currently not set.

This patch set error code to -EINVAL in such cases, so that the error
is reported to userspace instead of silently fail.

Link: http://marc.info/?i=cover.1386798254.git.ydroneaud@opteya.com>
Signed-off-by: Yann Droneaud <ydroneaud@opteya.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Yann Droneaud 2013-12-11 23:01:50 +01:00 committed by Roland Dreier
parent c780d82a74
commit 98a37510ec
1 changed files with 1 additions and 0 deletions
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drivers/infiniband/core/uverbs_cmd.c
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@ -2738,6 +2738,7 @@ int ib_uverbs_ex_create_flow(struct ib_uverbs_file *file,
if (cmd.flow_attr.size || (i != flow_attr->num_of_specs)) {
pr_warn("create flow failed, flow %d: %d bytes left from uverb cmd\n",
i, cmd.flow_attr.size);
err = -EINVAL;
goto err_free;
}
flow_id = ib_create_flow(qp, flow_attr, IB_FLOW_DOMAIN_USER);