[PATCH net-next V3 7/7] net/sched: cls_bpf: Reflect HW offload status

[Or Gerlitz]

BPF classifier support for the "in hw" offloading flags.

Signed-off-by: Or Gerlitz <ogerl...@mellanox.com>
Reviewed-by: Amir Vadai <a...@vadai.me>
Acked-by: Jakub Kicinski <jakub.kicin...@netronome.com>
---
 net/sched/cls_bpf.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/net/sched/cls_bpf.c b/net/sched/cls_bpf.c
index d9c9701..61a5b33 100644
--- a/net/sched/cls_bpf.c
+++ b/net/sched/cls_bpf.c
@@ -148,6 +148,7 @@ static int cls_bpf_offload_cmd(struct tcf_proto *tp, struct 
cls_bpf_prog *prog,
        struct net_device *dev = tp->q->dev_queue->dev;
        struct tc_cls_bpf_offload bpf_offload = {};
        struct tc_to_netdev offload;
+       int err;
 
        offload.type = TC_SETUP_CLSBPF;
        offload.cls_bpf = &bpf_offload;
@@ -159,8 +160,13 @@ static int cls_bpf_offload_cmd(struct tcf_proto *tp, 
struct cls_bpf_prog *prog,
        bpf_offload.exts_integrated = prog->exts_integrated;
        bpf_offload.gen_flags = prog->gen_flags;
 
-       return dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle,
-                                            tp->protocol, &offload);
+       err = dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle,
+                                           tp->protocol, &offload);
+
+       if (!err && (cmd == TC_CLSBPF_ADD || cmd == TC_CLSBPF_REPLACE))
+               prog->gen_flags |= TCA_CLS_FLAGS_IN_HW;
+
+       return err;
 }
 
 static int cls_bpf_offload(struct tcf_proto *tp, struct cls_bpf_prog *prog,
@@ -511,6 +517,9 @@ static int cls_bpf_change(struct net *net, struct sk_buff 
*in_skb,
                return ret;
        }
 
+       if (!(tc_in_hw(prog->gen_flags)))
+               prog->gen_flags |= TCA_CLS_FLAGS_NOT_IN_HW;
+
        if (oldprog) {
                list_replace_rcu(&oldprog->link, &prog->link);
                tcf_unbind_filter(tp, &oldprog->res);
-- 
2.3.7