[PATCH bpf-next v2 03/11] net: sched: cls_flower: propagate extack support for filter offload

[Jakub Kicinski]

From: Quentin Monnet <quentin.mon...@netronome.com>

Propagate the extack pointer from the `->change()` classifier operation
to the function used for filter replacement in cls_flower, and feed it
to tc_cls_common_offload_init(). 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.mon...@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicin...@netronome.com>
---
 net/sched/cls_flower.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c
index f1640a98a3d2..fe7d96d12435 100644
--- a/net/sched/cls_flower.c
+++ b/net/sched/cls_flower.c
@@ -234,14 +234,15 @@ 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;
        bool skip_sw = tc_skip_sw(f->flags);
        int err;
 
-       tc_cls_common_offload_init(&cls_flower.common, tp, NULL);
+       tc_cls_common_offload_init(&cls_flower.common, tp, extack);
        cls_flower.command = TC_CLSFLOWER_REPLACE;
        cls_flower.cookie = (unsigned long) f;
        cls_flower.dissector = dissector;
@@ -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