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net: remove indirect block netdev event registration

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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>
This commit is contained in:
Pablo Neira Ayuso
2020-05-29 02:25:41 +02:00
committed by David S. Miller
parent e445e30cf7
commit 709ffbe19b
5 changed files with 1 additions and 444 deletions
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79
net/sched/cls_api.c
View File

@@ -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,