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net: sched: cls_matchall: call block callbacks for offload 

Use the newly introduced callbacks infrastructure and call block
callbacks alongside with the existing per-netdev ndo_setup_tc.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2017-10-19 15:50:33 +02:00 committed by David S. Miller
parent 208c0f4b52
commit 2447a96f88
1 changed files with 45 additions and 27 deletions
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72
net/sched/cls_matchall.c
View File

@ -50,12 +50,32 @@ static void mall_destroy_rcu(struct rcu_head *rcu)
kfree(head);
}
static void mall_destroy_hw_filter(struct tcf_proto *tp,
struct cls_mall_head *head,
unsigned long cookie)
{
struct net_device *dev = tp->q->dev_queue->dev;
struct tc_cls_matchall_offload cls_mall = {};
struct tcf_block *block = tp->chain->block;
tc_cls_common_offload_init(&cls_mall.common, tp);
cls_mall.command = TC_CLSMATCHALL_DESTROY;
cls_mall.cookie = cookie;
if (tc_can_offload(dev))
dev->netdev_ops->ndo_setup_tc(dev, TC_SETUP_CLSMATCHALL,
&cls_mall);
tc_setup_cb_call(block, NULL, TC_SETUP_CLSMATCHALL, &cls_mall, false);
}
static int mall_replace_hw_filter(struct tcf_proto *tp,
struct cls_mall_head *head,
unsigned long cookie)
{
struct net_device *dev = tp->q->dev_queue->dev;
struct tc_cls_matchall_offload cls_mall = {};
struct tcf_block *block = tp->chain->block;
bool skip_sw = tc_skip_sw(head->flags);
int err;
tc_cls_common_offload_init(&cls_mall.common, tp);
@ -63,37 +83,40 @@ static int mall_replace_hw_filter(struct tcf_proto *tp,
cls_mall.exts = &head->exts;
cls_mall.cookie = cookie;
err = dev->netdev_ops->ndo_setup_tc(dev, TC_SETUP_CLSMATCHALL,
&cls_mall);
if (!err)
if (tc_can_offload(dev)) {
err = dev->netdev_ops->ndo_setup_tc(dev, TC_SETUP_CLSMATCHALL,
&cls_mall);
if (err) {
if (skip_sw)
return err;
} else {
head->flags |= TCA_CLS_FLAGS_IN_HW;
}
}
err = tc_setup_cb_call(block, NULL, TC_SETUP_CLSMATCHALL,
&cls_mall, skip_sw);
if (err < 0) {
mall_destroy_hw_filter(tp, head, cookie);
return err;
} else if (err > 0) {
head->flags |= TCA_CLS_FLAGS_IN_HW;
}
return err;
}
if (skip_sw && !(head->flags & TCA_CLS_FLAGS_IN_HW))
return -EINVAL;
static void mall_destroy_hw_filter(struct tcf_proto *tp,
struct cls_mall_head *head,
unsigned long cookie)
{
struct net_device *dev = tp->q->dev_queue->dev;
struct tc_cls_matchall_offload cls_mall = {};
tc_cls_common_offload_init(&cls_mall.common, tp);
cls_mall.command = TC_CLSMATCHALL_DESTROY;
cls_mall.cookie = cookie;
dev->netdev_ops->ndo_setup_tc(dev, TC_SETUP_CLSMATCHALL, &cls_mall);
return 0;
}
static void mall_destroy(struct tcf_proto *tp)
{
struct cls_mall_head *head = rtnl_dereference(tp->root);
struct net_device *dev = tp->q->dev_queue->dev;
if (!head)
return;
if (tc_should_offload(dev, head->flags))
if (!tc_skip_hw(head->flags))
mall_destroy_hw_filter(tp, head, (unsigned long) head);
call_rcu(&head->rcu, mall_destroy_rcu);
@ -133,7 +156,6 @@ static int mall_change(struct net *net, struct sk_buff *in_skb,
void **arg, bool ovr)
{
struct cls_mall_head *head = rtnl_dereference(tp->root);
struct net_device *dev = tp->q->dev_queue->dev;
struct nlattr *tb[TCA_MATCHALL_MAX + 1];
struct cls_mall_head *new;
u32 flags = 0;
@ -173,14 +195,10 @@ static int mall_change(struct net *net, struct sk_buff *in_skb,
if (err)
goto err_set_parms;
if (tc_should_offload(dev, flags)) {
if (!tc_skip_hw(new->flags)) {
err = mall_replace_hw_filter(tp, new, (unsigned long) new);
if (err) {
if (tc_skip_sw(flags))
goto err_replace_hw_filter;
else
err = 0;
}
if (err)
goto err_replace_hw_filter;
}
if (!tc_in_hw(new->flags))