From 796852197c7a1a3a69ee5184d68bf16885bef65b Mon Sep 17 00:00:00 2001 From: Hadar Hen Zion Date: Thu, 1 Dec 2016 14:06:34 +0200 Subject: [PATCH] net/sched: cls_flower: Try to offload only if skip_hw flag isn't set 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 Acked-by: Jiri Pirko Signed-off-by: David S. Miller --- net/sched/cls_flower.c | 35 ++++++++++++++++++++--------------- 1 file changed, 20 insertions(+), 15 deletions(-) diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c index e8dd09af0d0c..5e70f65442d3 100644 --- a/net/sched/cls_flower.c +++ b/net/sched/cls_flower.c @@ -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, -- 2.20.1