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netfilter: flowtable: add indr block setup support

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Add etfilter flowtable support indr-block setup. It makes flowtable offload
vlan and tunnel device.

Signed-off-by: wenxu <wenxu@ucloud.cn>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
wenxu 2020-02-24 13:22:53 +08:00 committed by Pablo Neira Ayuso
parent 4679877921
commit b5140a36da
1 changed files with 90 additions and 4 deletions
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94
net/netfilter/nf_flow_table_offload.c
View file

@ -7,6 +7,7 @@
#include <linux/tc_act/tc_csum.h>
#include <net/flow_offload.h>
#include <net/netfilter/nf_flow_table.h>
#include <net/netfilter/nf_tables.h>
#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_core.h>
#include <net/netfilter/nf_conntrack_tuple.h>
@ -827,6 +828,22 @@ static void nf_flow_table_block_offload_init(struct flow_block_offload *bo,
INIT_LIST_HEAD(&bo->cb_list);
}
static int nf_flow_table_indr_offload_cmd(struct flow_block_offload *bo,
struct nf_flowtable *flowtable,
struct net_device *dev,
enum flow_block_command cmd,
struct netlink_ext_ack *extack)
{
nf_flow_table_block_offload_init(bo, dev_net(dev), cmd, flowtable,
extack);
flow_indr_block_call(dev, bo, cmd);
if (list_empty(&bo->cb_list))
return -EOPNOTSUPP;
return 0;
}
static int nf_flow_table_offload_cmd(struct flow_block_offload *bo,
struct nf_flowtable *flowtable,
struct net_device *dev,
@ -835,9 +852,6 @@ static int nf_flow_table_offload_cmd(struct flow_block_offload *bo,
{
int err;
if (!dev->netdev_ops->ndo_setup_tc)
return -EOPNOTSUPP;
nf_flow_table_block_offload_init(bo, dev_net(dev), cmd, flowtable,
extack);
err = dev->netdev_ops->ndo_setup_tc(dev, TC_SETUP_FT, bo);
@ -858,7 +872,12 @@ int nf_flow_table_offload_setup(struct nf_flowtable *flowtable,
if (!nf_flowtable_hw_offload(flowtable))
return 0;
err = nf_flow_table_offload_cmd(&bo, flowtable, dev, cmd, &extack);
if (dev->netdev_ops->ndo_setup_tc)
err = nf_flow_table_offload_cmd(&bo, flowtable, dev, cmd,
&extack);
else
err = nf_flow_table_indr_offload_cmd(&bo, flowtable, dev, cmd,
&extack);
if (err < 0)
return err;
@ -866,10 +885,75 @@ 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)
{
INIT_WORK(&nf_flow_offload_work, flow_offload_work_handler);
flow_indr_add_block_cb(&block_ing_entry);
return 0;
}
@ -878,6 +962,8 @@ void nf_flow_table_offload_exit(void)
struct flow_offload_work *offload, *next;
LIST_HEAD(offload_pending_list);
flow_indr_del_block_cb(&block_ing_entry);
cancel_work_sync(&nf_flow_offload_work);
list_for_each_entry_safe(offload, next, &offload_pending_list, list) {