netdev - [PATCH bpf-next v3 02/11] net: sched: cls_flower: propagate extack support for filter offload

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Message-Id: <20180116213839.24537-3-jakub.kicinski@netronome.com>
Date:   Tue, 16 Jan 2018 13:38:30 -0800
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     davem@...emloft.net, daniel@...earbox.net,
        alexei.starovoitov@...il.com, netdev@...r.kernel.org
Cc:     dsahern@...il.com, oss-drivers@...ronome.com, jiri@...nulli.us,
        john.fastabend@...il.com, jhs@...atatu.com, gerlitz.or@...il.com,
        aring@...atatu.com, xiyou.wangcong@...il.com,
        Quentin Monnet <quentin.monnet@...ronome.com>
Subject: [PATCH bpf-next v3 02/11] net: sched: cls_flower: propagate extack support for filter offload

From: Quentin Monnet <quentin.monnet@...ronome.com>

Propagate the extack pointer from the `->change()` classifier operation
to the function used for filter replacement in cls_flower. This makes it
possible to use netlink extack messages in the future at replacement
time for this filter, although it is not used at this point.

Signed-off-by: Quentin Monnet <quentin.monnet@...ronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
---
 net/sched/cls_flower.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c
index 998ee4faf934..ebbaba4a214b 100644
--- a/net/sched/cls_flower.c
+++ b/net/sched/cls_flower.c
@@ -234,7 +234,8 @@ static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f)
 static int fl_hw_replace_filter(struct tcf_proto *tp,
 				struct flow_dissector *dissector,
 				struct fl_flow_key *mask,
-				struct cls_fl_filter *f)
+				struct cls_fl_filter *f,
+				struct netlink_ext_ack *extack)
 {
 	struct tc_cls_flower_offload cls_flower = {};
 	struct tcf_block *block = tp->chain->block;
@@ -939,7 +940,8 @@ static int fl_change(struct net *net, struct sk_buff *in_skb,
 		err = fl_hw_replace_filter(tp,
 					   &head->dissector,
 					   &mask.key,
-					   fnew);
+					   fnew,
+					   extack);
 		if (err)
 			goto errout_idr;
 	}
-- 
2.15.1