From: Mark Zhang markz@mellanox.com
[ Upstream commit a15542bb72a48042f5df7475893d46f725f5f9fb ]
The counter resource should return -EAGAIN if it was requested for a different port, this is similar to how QP works if the users provides a port filter.
Otherwise port filtering in netlink will return broken counter nests.
Fixes: c4ffee7c9bdb ("RDMA/netlink: Implement counter dumpit calback") Link: https://lore.kernel.org/r/20191020062800.8065-1-leon@kernel.org Signed-off-by: Mark Zhang markz@mellanox.com Signed-off-by: Leon Romanovsky leonro@mellanox.com Reviewed-by: Jason Gunthorpe jgg@mellanox.com Signed-off-by: Jason Gunthorpe jgg@mellanox.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/infiniband/core/nldev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c index f42e856f30729..4300e21865845 100644 --- a/drivers/infiniband/core/nldev.c +++ b/drivers/infiniband/core/nldev.c @@ -778,7 +778,7 @@ static int fill_res_counter_entry(struct sk_buff *msg, bool has_cap_net_admin, container_of(res, struct rdma_counter, res);
if (port && port != counter->port) - return 0; + return -EAGAIN;
/* Dump it even query failed */ rdma_counter_query_stats(counter);