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Subject[PATCH rdma-next 1/3] RDMA/core: Modify rdma_query_gid() to return accurate error codes
Date
From: Avihai Horon <avihaih@nvidia.com>

Modify rdma_query_gid() to return -ENOENT for empty entries. This will
make error reporting more accurate and will be used in next patches.

Signed-off-by: Avihai Horon <avihaih@nvidia.com>
Reviewed-by: Mark Zhang <markzhang@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
drivers/infiniband/core/cache.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c
index 0c98dd3dee67..dd66f1a6e792 100644
--- a/drivers/infiniband/core/cache.c
+++ b/drivers/infiniband/core/cache.c
@@ -963,9 +963,13 @@ int rdma_query_gid(struct ib_device *device, u32 port_num,
table = rdma_gid_table(device, port_num);
read_lock_irqsave(&table->rwlock, flags);

- if (index < 0 || index >= table->sz ||
- !is_gid_entry_valid(table->data_vec[index]))
+ if (index < 0 || index >= table->sz)
+ goto done;
+
+ if (!is_gid_entry_valid(table->data_vec[index])) {
+ res = -ENOENT;
goto done;
+ }

memcpy(gid, &table->data_vec[index]->attr.gid, sizeof(*gid));
res = 0;
--
2.33.1
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