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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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66
net/netfilter/nf_flow_table_offload.c
View File

@@ -1008,69 +1008,6 @@ int nf_flow_table_offload_setup(struct nf_flowtable *flowtable,
}
EXPORT_SYMBOL_GPL(nf_flow_table_offload_setup);
static void nf_flow_table_indr_block_ing_cmd(struct net_device *dev,
struct nf_flowtable *flowtable,
flow_indr_block_bind_cb_t *cb,
void *cb_priv,
enum flow_block_command cmd)
{
struct netlink_ext_ack extack = {};
struct flow_block_offload bo;
if (!flowtable)
return;
nf_flow_table_block_offload_init(&bo, dev_net(dev), cmd, flowtable,
&extack);
cb(dev, cb_priv, TC_SETUP_FT, &bo);
nf_flow_table_block_setup(flowtable, &bo, cmd);
}
static void nf_flow_table_indr_block_cb_cmd(struct nf_flowtable *flowtable,
struct net_device *dev,
flow_indr_block_bind_cb_t *cb,
void *cb_priv,
enum flow_block_command cmd)
{
if (!(flowtable->flags & NF_FLOWTABLE_HW_OFFLOAD))
return;
nf_flow_table_indr_block_ing_cmd(dev, flowtable, cb, cb_priv, cmd);
}
static void nf_flow_table_indr_block_cb(struct net_device *dev,
flow_indr_block_bind_cb_t *cb,
void *cb_priv,
enum flow_block_command cmd)
{
struct net *net = dev_net(dev);
struct nft_flowtable *nft_ft;
struct nft_table *table;
struct nft_hook *hook;
mutex_lock(&net->nft.commit_mutex);
list_for_each_entry(table, &net->nft.tables, list) {
list_for_each_entry(nft_ft, &table->flowtables, list) {
list_for_each_entry(hook, &nft_ft->hook_list, list) {
if (hook->ops.dev != dev)
continue;
nf_flow_table_indr_block_cb_cmd(&nft_ft->data,
dev, cb,
cb_priv, cmd);
}
}
}
mutex_unlock(&net->nft.commit_mutex);
}
static struct flow_indr_block_entry block_ing_entry = {
.cb = nf_flow_table_indr_block_cb,
.list = LIST_HEAD_INIT(block_ing_entry.list),
};
int nf_flow_table_offload_init(void)
{
nf_flow_offload_wq = alloc_workqueue("nf_flow_table_offload",
@@ -1078,13 +1015,10 @@ int nf_flow_table_offload_init(void)
if (!nf_flow_offload_wq)
return -ENOMEM;
flow_indr_add_block_cb(&block_ing_entry);
return 0;
}
void nf_flow_table_offload_exit(void)
{
flow_indr_del_block_cb(&block_ing_entry);
destroy_workqueue(nf_flow_offload_wq);
}

53
net/netfilter/nf_tables_offload.c
View File

@@ -285,25 +285,6 @@ static int nft_block_offload_cmd(struct nft_base_chain *chain,
return nft_block_setup(chain, &bo, cmd);
}
static void nft_indr_block_ing_cmd(struct net_device *dev,
struct nft_base_chain *chain,
flow_indr_block_bind_cb_t *cb,
void *cb_priv,
enum flow_block_command cmd)
{
struct netlink_ext_ack extack = {};
struct flow_block_offload bo;
if (!chain)
return;
nft_flow_block_offload_init(&bo, dev_net(dev), cmd, chain, &extack);
cb(dev, cb_priv, TC_SETUP_BLOCK, &bo);
nft_block_setup(chain, &bo, cmd);
}
static void nft_indr_block_cleanup(struct flow_block_cb *block_cb)
{
struct nft_base_chain *basechain = block_cb->indr.data;
@@ -575,24 +556,6 @@ static struct nft_chain *__nft_offload_get_chain(struct net_device *dev)
return NULL;
}
static void nft_indr_block_cb(struct net_device *dev,
flow_indr_block_bind_cb_t *cb, void *cb_priv,
enum flow_block_command cmd)
{
struct net *net = dev_net(dev);
struct nft_chain *chain;
mutex_lock(&net->nft.commit_mutex);
chain = __nft_offload_get_chain(dev);
if (chain && chain->flags & NFT_CHAIN_HW_OFFLOAD) {
struct nft_base_chain *basechain;
basechain = nft_base_chain(chain);
nft_indr_block_ing_cmd(dev, basechain, cb, cb_priv, cmd);
}
mutex_unlock(&net->nft.commit_mutex);
}
static int nft_offload_netdev_event(struct notifier_block *this,
unsigned long event, void *ptr)
{
@@ -614,30 +577,16 @@ static int nft_offload_netdev_event(struct notifier_block *this,
return NOTIFY_DONE;
}
static struct flow_indr_block_entry block_ing_entry = {
.cb = nft_indr_block_cb,
.list = LIST_HEAD_INIT(block_ing_entry.list),
};
static struct notifier_block nft_offload_netdev_notifier = {
.notifier_call = nft_offload_netdev_event,
};
int nft_offload_init(void)
{
int err;
err = register_netdevice_notifier(&nft_offload_netdev_notifier);
if (err < 0)
return err;
flow_indr_add_block_cb(&block_ing_entry);
return 0;
return register_netdevice_notifier(&nft_offload_netdev_notifier);
}
void nft_offload_exit(void)
{
flow_indr_del_block_cb(&block_ing_entry);
unregister_netdevice_notifier(&nft_offload_netdev_notifier);
}