net: remove indirect block netdev event registration

Drivers do not register to netdev events to set up indirect blocks
anymore. Remove __flow_indr_block_cb_register() and
__flow_indr_block_cb_unregister().

The frontends set up the callbacks through flow_indr_dev_setup_block()

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 79 deletions

diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 760e51d852f5..a00a203b2ef5 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -621,78 +621,6 @@ static void tcf_chain_flush(struct tcf_chain *chain, bool rtnl_held)
 static int tcf_block_setup(struct tcf_block *block,
 			   struct flow_block_offload *bo);
 
-static void tc_indr_block_cmd(struct net_device *dev, struct tcf_block *block,
-			      flow_indr_block_bind_cb_t *cb, void *cb_priv,
-			      enum flow_block_command command, bool ingress)
-{
-	struct flow_block_offload bo = {
-		.command	= command,
-		.binder_type	= ingress ?
-				  FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS :
-				  FLOW_BLOCK_BINDER_TYPE_CLSACT_EGRESS,
-		.net		= dev_net(dev),
-		.block_shared	= tcf_block_non_null_shared(block),
-	};
-	INIT_LIST_HEAD(&bo.cb_list);
-
-	if (!block)
-		return;
-
-	bo.block = &block->flow_block;
-
-	down_write(&block->cb_lock);
-	cb(dev, cb_priv, TC_SETUP_BLOCK, &bo);
-
-	tcf_block_setup(block, &bo);
-	up_write(&block->cb_lock);
-}
-
-static struct tcf_block *tc_dev_block(struct net_device *dev, bool ingress)
-{
-	const struct Qdisc_class_ops *cops;
-	const struct Qdisc_ops *ops;
-	struct Qdisc *qdisc;
-
-	if (!dev_ingress_queue(dev))
-		return NULL;
-
-	qdisc = dev_ingress_queue(dev)->qdisc_sleeping;
-	if (!qdisc)
-		return NULL;
-
-	ops = qdisc->ops;
-	if (!ops)
-		return NULL;
-
-	if (!ingress && !strcmp("ingress", ops->id))
-		return NULL;
-
-	cops = ops->cl_ops;
-	if (!cops)
-		return NULL;
-
-	if (!cops->tcf_block)
-		return NULL;
-
-	return cops->tcf_block(qdisc,
-			       ingress ? TC_H_MIN_INGRESS : TC_H_MIN_EGRESS,
-			       NULL);
-}
-
-static void tc_indr_block_get_and_cmd(struct net_device *dev,
-				      flow_indr_block_bind_cb_t *cb,
-				      void *cb_priv,
-				      enum flow_block_command command)
-{
-	struct tcf_block *block;
-
-	block = tc_dev_block(dev, true);
-	tc_indr_block_cmd(dev, block, cb, cb_priv, command, true);
-
-	block = tc_dev_block(dev, false);
-	tc_indr_block_cmd(dev, block, cb, cb_priv, command, false);
-}
-
 static void tcf_block_offload_init(struct flow_block_offload *bo,
 				   struct net_device *dev,
 				   enum flow_block_command command,
@@ -3836,11 +3764,6 @@ static struct pernet_operations tcf_net_ops = {
 	.size = sizeof(struct tcf_net),
 };
 
-static struct flow_indr_block_entry block_entry = {
-	.cb = tc_indr_block_get_and_cmd,
-	.list = LIST_HEAD_INIT(block_entry.list),
-};
-
 static int __init tc_filter_init(void)
 {
 	int err;
@@ -3853,8 +3776,6 @@ static int __init tc_filter_init(void)
 	if (err)
 		goto err_register_pernet_subsys;
 
-	flow_indr_add_block_cb(&block_entry);
-
 	rtnl_register(PF_UNSPEC, RTM_NEWTFILTER, tc_new_tfilter, NULL,
 		      RTNL_FLAG_DOIT_UNLOCKED);
 	rtnl_register(PF_UNSPEC, RTM_DELTFILTER, tc_del_tfilter, NULL,