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net/sched: cls_flower: Try to offload only if skip_hw flag isn't set

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Check skip_hw flag isn't set before calling
fl_hw_{replace/destroy}_filter and fl_hw_update_stats functions.

Replace the call to tc_should_offload with tc_can_offload.
tc_can_offload only checks if the device supports offloading, the check for
skip_hw flag is done earlier in the flow.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hadar Hen Zion 2016-12-01 14:06:34 +02:00 committed by David S. Miller
parent 55330f0596
commit 796852197c
1 changed files with 20 additions and 15 deletions
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35
net/sched/cls_flower.c
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@ -207,7 +207,7 @@ static void fl_hw_destroy_filter(struct tcf_proto *tp, unsigned long cookie)
struct tc_cls_flower_offload offload = {0};
struct tc_to_netdev tc;
if (!tc_should_offload(dev, tp, 0))
if (!tc_can_offload(dev, tp))
return;
offload.command = TC_CLSFLOWER_DESTROY;
@ -231,7 +231,7 @@ static int fl_hw_replace_filter(struct tcf_proto *tp,
struct tc_to_netdev tc;
int err;
if (!tc_should_offload(dev, tp, flags))
if (!tc_can_offload(dev, tp))
return tc_skip_sw(flags) ? -EINVAL : 0;
offload.command = TC_CLSFLOWER_REPLACE;
@ -259,7 +259,7 @@ static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f)
struct tc_cls_flower_offload offload = {0};
struct tc_to_netdev tc;
if (!tc_should_offload(dev, tp, 0))
if (!tc_can_offload(dev, tp))
return;
offload.command = TC_CLSFLOWER_STATS;
@ -275,7 +275,8 @@ static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f)
static void __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f)
{
list_del_rcu(&f->list);
fl_hw_destroy_filter(tp, (unsigned long)f);
if (!tc_skip_hw(f->flags))
fl_hw_destroy_filter(tp, (unsigned long)f);
tcf_unbind_filter(tp, &f->res);
call_rcu(&f->rcu, fl_destroy_filter);
}
@ -743,20 +744,23 @@ static int fl_change(struct net *net, struct sk_buff *in_skb,
goto errout;
}
err = fl_hw_replace_filter(tp,
&head->dissector,
&mask.key,
&fnew->key,
&fnew->exts,
(unsigned long)fnew,
fnew->flags);
if (err)
goto errout;
if (!tc_skip_hw(fnew->flags)) {
err = fl_hw_replace_filter(tp,
&head->dissector,
&mask.key,
&fnew->key,
&fnew->exts,
(unsigned long)fnew,
fnew->flags);
if (err)
goto errout;
}
if (fold) {
rhashtable_remove_fast(&head->ht, &fold->ht_node,
head->ht_params);
fl_hw_destroy_filter(tp, (unsigned long)fold);
if (!tc_skip_hw(fold->flags))
fl_hw_destroy_filter(tp, (unsigned long)fold);
}
*arg = (unsigned long) fnew;
@ -879,7 +883,8 @@ static int fl_dump(struct net *net, struct tcf_proto *tp, unsigned long fh,
goto nla_put_failure;
}
fl_hw_update_stats(tp, f);
if (!tc_skip_hw(f->flags))
fl_hw_update_stats(tp, f);
if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,