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authorPablo Neira Ayuso <pablo@netfilter.org>2019-07-09 22:55:48 +0200
committerDavid S. Miller <davem@davemloft.net>2019-07-09 14:38:50 -0700
commit0d4fd02e7199fbf57c0d175dd1890c82cd4a6f4f (patch)
treec06ac553a77c2ae6bc7e36db665d77fce29f2e1c /drivers/net/ethernet/mellanox/mlxsw
parent722d36e6e29e50c640c9f5ce186b8d8709cae1a6 (diff)
net: flow_offload: add flow_block_cb_is_busy() and use it
This patch adds a function to check if flow block callback is already in use. Call this new function from flow_block_cb_setup_simple() and from drivers. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlxsw')
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/spectrum.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 65bea6be84d6..35adc174f277 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -1698,6 +1698,10 @@ static int mlxsw_sp_setup_tc_block(struct mlxsw_sp_port *mlxsw_sp_port,
switch (f->command) {
case FLOW_BLOCK_BIND:
+ if (flow_block_cb_is_busy(cb, mlxsw_sp_port,
+ &mlxsw_sp_block_cb_list))
+ return -EBUSY;
+
block_cb = flow_block_cb_alloc(f->net, cb, mlxsw_sp_port,
mlxsw_sp_port, NULL);
if (IS_ERR(block_cb))