| Message ID | 20190704234843.6601-12-pablo@netfilter.org |
|---|---|
| State | Changes Requested |
| Delegated to: | David Miller |
| Headers | show |
| Series | netfilter: add hardware offload infrastructure | expand |
diff --git a/net/core/flow_offload.c b/net/core/flow_offload.c index 0b8d088d822e..8c20f4740800 100644 --- a/net/core/flow_offload.c +++ b/net/core/flow_offload.c @@ -206,6 +206,12 @@ struct flow_block_cb *flow_block_cb_alloc(struct net *net, tc_setup_cb_t *cb, { struct flow_block_cb *block_cb; + list_for_each_entry(block_cb, &flow_block_cb_list, global_list) { + if (block_cb->cb == cb && + block_cb->cb_ident == cb_ident) + return ERR_PTR(-EBUSY); + } + block_cb = kzalloc(sizeof(*block_cb), GFP_KERNEL); if (IS_ERR(block_cb)) return block_cb;
Drivers need to be updated to support this, return EBUSY by now. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> --- v2: no changes. net/core/flow_offload.c | 6 ++++++ 1 file changed, 6 insertions(+)