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flow_offload: move tc indirect block to flow offload

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move tc indirect block to flow_offload and rename
it to flow indirect block.The nf_tables can use the
indr block architecture.

Signed-off-by: wenxu <wenxu@ucloud.cn>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
wenxu
2019-08-07 09:13:52 +08:00
committed by David S. Miller
parent e4da910211
commit 4e481908c5
7 changed files with 293 additions and 276 deletions
Download Patch File Download Diff File Expand all files Collapse all files

266
net/sched/cls_api.c
View File

@@ -37,6 +37,7 @@
#include <net/tc_act/tc_skbedit.h>
#include <net/tc_act/tc_ct.h>
#include <net/tc_act/tc_mpls.h>
#include <net/flow_offload.h>
extern const struct nla_policy rtm_tca_policy[TCA_MAX + 1];
@@ -545,6 +546,33 @@ 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_ing_cmd(struct net_device *dev,
struct tcf_block *block,
flow_indr_block_bind_cb_t *cb,
void *cb_priv,
enum flow_block_command command)
{
struct flow_block_offload bo = {
.command = command,
.binder_type = FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS,
.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;
cb(dev, cb_priv, TC_SETUP_BLOCK, &bo);
tcf_block_setup(block, &bo);
}
static struct tcf_block *tc_dev_ingress_block(struct net_device *dev)
{
const struct Qdisc_class_ops *cops;
@@ -567,229 +595,18 @@ static struct tcf_block *tc_dev_ingress_block(struct net_device *dev)
return cops->tcf_block(qdisc, TC_H_MIN_INGRESS, NULL);
}
static struct rhashtable indr_setup_block_ht;
struct tc_indr_block_dev {
struct rhash_head ht_node;
struct net_device *dev;
unsigned int refcnt;
struct list_head cb_list;
};
struct tc_indr_block_cb {
struct list_head list;
void *cb_priv;
tc_indr_block_bind_cb_t *cb;
void *cb_ident;
};
static const struct rhashtable_params tc_indr_setup_block_ht_params = {
.key_offset = offsetof(struct tc_indr_block_dev, dev),
.head_offset = offsetof(struct tc_indr_block_dev, ht_node),
.key_len = sizeof(struct net_device *),
};
static struct tc_indr_block_dev *
tc_indr_block_dev_lookup(struct net_device *dev)
static void tc_indr_block_get_and_ing_cmd(struct net_device *dev,
flow_indr_block_bind_cb_t *cb,
void *cb_priv,
enum flow_block_command command)
{
return rhashtable_lookup_fast(&indr_setup_block_ht, &dev,
tc_indr_setup_block_ht_params);
struct tcf_block *block = tc_dev_ingress_block(dev);
tc_indr_block_ing_cmd(dev, block, cb, cb_priv, command);
}
static struct tc_indr_block_dev *tc_indr_block_dev_get(struct net_device *dev)
{
struct tc_indr_block_dev *indr_dev;
indr_dev = tc_indr_block_dev_lookup(dev);
if (indr_dev)
goto inc_ref;
indr_dev = kzalloc(sizeof(*indr_dev), GFP_KERNEL);
if (!indr_dev)
return NULL;
INIT_LIST_HEAD(&indr_dev->cb_list);
indr_dev->dev = dev;
if (rhashtable_insert_fast(&indr_setup_block_ht, &indr_dev->ht_node,
tc_indr_setup_block_ht_params)) {
kfree(indr_dev);
return NULL;
}
inc_ref:
indr_dev->refcnt++;
return indr_dev;
}
static void tc_indr_block_dev_put(struct tc_indr_block_dev *indr_dev)
{
if (--indr_dev->refcnt)
return;
rhashtable_remove_fast(&indr_setup_block_ht, &indr_dev->ht_node,
tc_indr_setup_block_ht_params);
kfree(indr_dev);
}
static struct tc_indr_block_cb *
tc_indr_block_cb_lookup(struct tc_indr_block_dev *indr_dev,
tc_indr_block_bind_cb_t *cb, void *cb_ident)
{
struct tc_indr_block_cb *indr_block_cb;
list_for_each_entry(indr_block_cb, &indr_dev->cb_list, list)
if (indr_block_cb->cb == cb &&
indr_block_cb->cb_ident == cb_ident)
return indr_block_cb;
return NULL;
}
static struct tc_indr_block_cb *
tc_indr_block_cb_add(struct tc_indr_block_dev *indr_dev, void *cb_priv,
tc_indr_block_bind_cb_t *cb, void *cb_ident)
{
struct tc_indr_block_cb *indr_block_cb;
indr_block_cb = tc_indr_block_cb_lookup(indr_dev, cb, cb_ident);
if (indr_block_cb)
return ERR_PTR(-EEXIST);
indr_block_cb = kzalloc(sizeof(*indr_block_cb), GFP_KERNEL);
if (!indr_block_cb)
return ERR_PTR(-ENOMEM);
indr_block_cb->cb_priv = cb_priv;
indr_block_cb->cb = cb;
indr_block_cb->cb_ident = cb_ident;
list_add(&indr_block_cb->list, &indr_dev->cb_list);
return indr_block_cb;
}
static void tc_indr_block_cb_del(struct tc_indr_block_cb *indr_block_cb)
{
list_del(&indr_block_cb->list);
kfree(indr_block_cb);
}
static int tcf_block_setup(struct tcf_block *block,
struct flow_block_offload *bo);
static void tc_indr_block_ing_cmd(struct net_device *dev,
struct tcf_block *block,
tc_indr_block_bind_cb_t *cb,
void *cb_priv,
enum flow_block_command command)
{
struct flow_block_offload bo = {
.command = command,
.binder_type = FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS,
.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;
cb(dev, cb_priv, TC_SETUP_BLOCK, &bo);
tcf_block_setup(block, &bo);
}
int __tc_indr_block_cb_register(struct net_device *dev, void *cb_priv,
tc_indr_block_bind_cb_t *cb, void *cb_ident)
{
struct tc_indr_block_cb *indr_block_cb;
struct tc_indr_block_dev *indr_dev;
struct tcf_block *block;
int err;
indr_dev = tc_indr_block_dev_get(dev);
if (!indr_dev)
return -ENOMEM;
indr_block_cb = tc_indr_block_cb_add(indr_dev, cb_priv, cb, cb_ident);
err = PTR_ERR_OR_ZERO(indr_block_cb);
if (err)
goto err_dev_put;
block = tc_dev_ingress_block(dev);
tc_indr_block_ing_cmd(dev, block, indr_block_cb->cb,
indr_block_cb->cb_priv, FLOW_BLOCK_BIND);
return 0;
err_dev_put:
tc_indr_block_dev_put(indr_dev);
return err;
}
EXPORT_SYMBOL_GPL(__tc_indr_block_cb_register);
int tc_indr_block_cb_register(struct net_device *dev, void *cb_priv,
tc_indr_block_bind_cb_t *cb, void *cb_ident)
{
int err;
rtnl_lock();
err = __tc_indr_block_cb_register(dev, cb_priv, cb, cb_ident);
rtnl_unlock();
return err;
}
EXPORT_SYMBOL_GPL(tc_indr_block_cb_register);
void __tc_indr_block_cb_unregister(struct net_device *dev,
tc_indr_block_bind_cb_t *cb, void *cb_ident)
{
struct tc_indr_block_cb *indr_block_cb;
struct tc_indr_block_dev *indr_dev;
struct tcf_block *block;
indr_dev = tc_indr_block_dev_lookup(dev);
if (!indr_dev)
return;
indr_block_cb = tc_indr_block_cb_lookup(indr_dev, cb, cb_ident);
if (!indr_block_cb)
return;
/* Send unbind message if required to free any block cbs. */
block = tc_dev_ingress_block(dev);
tc_indr_block_ing_cmd(dev, block, indr_block_cb->cb,
indr_block_cb->cb_priv, FLOW_BLOCK_UNBIND);
tc_indr_block_cb_del(indr_block_cb);
tc_indr_block_dev_put(indr_dev);
}
EXPORT_SYMBOL_GPL(__tc_indr_block_cb_unregister);
void tc_indr_block_cb_unregister(struct net_device *dev,
tc_indr_block_bind_cb_t *cb, void *cb_ident)
{
rtnl_lock();
__tc_indr_block_cb_unregister(dev, cb, cb_ident);
rtnl_unlock();
}
EXPORT_SYMBOL_GPL(tc_indr_block_cb_unregister);
static void flow_indr_block_call(struct net_device *dev,
struct flow_block_offload *bo,
enum flow_block_command command)
{
struct tc_indr_block_cb *indr_block_cb;
struct tc_indr_block_dev *indr_dev;
indr_dev = tc_indr_block_dev_lookup(dev);
if (!indr_dev)
return;
list_for_each_entry(indr_block_cb, &indr_dev->cb_list, list)
indr_block_cb->cb(dev, indr_block_cb->cb_priv, TC_SETUP_BLOCK,
bo);
}
static void tc_indr_block_call(struct tcf_block *block, struct net_device *dev,
static void tc_indr_block_call(struct tcf_block *block,
struct net_device *dev,
struct tcf_block_ext_info *ei,
enum flow_block_command command,
struct netlink_ext_ack *extack)
@@ -804,7 +621,7 @@ static void tc_indr_block_call(struct tcf_block *block, struct net_device *dev,
};
INIT_LIST_HEAD(&bo.cb_list);
flow_indr_block_call(dev, &bo, command);
flow_indr_block_call(dev, tc_indr_block_get_and_ing_cmd, &bo, command);
tcf_block_setup(block, &bo);
}
@@ -3378,11 +3195,6 @@ static int __init tc_filter_init(void)
if (err)
goto err_register_pernet_subsys;
err = rhashtable_init(&indr_setup_block_ht,
&tc_indr_setup_block_ht_params);
if (err)
goto err_rhash_setup_block_ht;
rtnl_register(PF_UNSPEC, RTM_NEWTFILTER, tc_new_tfilter, NULL,
RTNL_FLAG_DOIT_UNLOCKED);
rtnl_register(PF_UNSPEC, RTM_DELTFILTER, tc_del_tfilter, NULL,
@@ -3396,8 +3208,6 @@ static int __init tc_filter_init(void)
return 0;
err_rhash_setup_block_ht:
unregister_pernet_subsys(&tcf_net_ops);
err_register_pernet_subsys:
destroy_workqueue(tc_filter_wq);
return err;