diff options
| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2019-07-09 23:55:48 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-07-10 00:38:50 +0300 |
| commit | 0d4fd02e7199fbf57c0d175dd1890c82cd4a6f4f (patch) | |
| tree | c06ac553a77c2ae6bc7e36db665d77fce29f2e1c /drivers/net/ethernet/mscc | |
| parent | 722d36e6e29e50c640c9f5ce186b8d8709cae1a6 (diff) | |
| download | linux-0d4fd02e7199fbf57c0d175dd1890c82cd4a6f4f.tar.xz | |
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/mscc')
| -rw-r--r-- | drivers/net/ethernet/mscc/ocelot_tc.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mscc/ocelot_tc.c b/drivers/net/ethernet/mscc/ocelot_tc.c index 935a774cb291..9e6464ffae5d 100644 --- a/drivers/net/ethernet/mscc/ocelot_tc.c +++ b/drivers/net/ethernet/mscc/ocelot_tc.c @@ -153,6 +153,9 @@ static int ocelot_setup_tc_block(struct ocelot_port *port, switch (f->command) { case FLOW_BLOCK_BIND: + if (flow_block_cb_is_busy(cb, port, &ocelot_block_cb_list)) + return -EBUSY; + block_cb = flow_block_cb_alloc(f->net, cb, port, port, NULL); if (IS_ERR(block_cb)) return PTR_ERR(block_cb); |