netdev - [PATCH bpf-next v3 03/11] net: sched: cls_matchall: propagate extack support for filter offload

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Message-Id: <20180116213839.24537-4-jakub.kicinski@netronome.com>
Date:   Tue, 16 Jan 2018 13:38:31 -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 03/11] net: sched: cls_matchall: 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_matchall. 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_matchall.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/net/sched/cls_matchall.c b/net/sched/cls_matchall.c
index dc3c57116bbd..16752abcb76b 100644
--- a/net/sched/cls_matchall.c
+++ b/net/sched/cls_matchall.c
@@ -85,7 +85,8 @@ static void mall_destroy_hw_filter(struct tcf_proto *tp,
 
 static int mall_replace_hw_filter(struct tcf_proto *tp,
 				  struct cls_mall_head *head,
-				  unsigned long cookie)
+				  unsigned long cookie,
+				  struct netlink_ext_ack *extack)
 {
 	struct tc_cls_matchall_offload cls_mall = {};
 	struct tcf_block *block = tp->chain->block;
@@ -202,7 +203,8 @@ static int mall_change(struct net *net, struct sk_buff *in_skb,
 		goto err_set_parms;
 
 	if (!tc_skip_hw(new->flags)) {
-		err = mall_replace_hw_filter(tp, new, (unsigned long) new);
+		err = mall_replace_hw_filter(tp, new, (unsigned long)new,
+					     extack);
 		if (err)
 			goto err_replace_hw_filter;
 	}
-- 
2.15.1