nfp: abm: refuse RED offload with harddrop set

RED Qdisc will now inform the drivers about the state of the harddrop
flag.  Refuse to offload in case harddrop is set.

Signed-off-by: Jakub Kicinski <[email protected]>
Reviewed-by: John Hurley <[email protected]>
Reviewed-by: Quentin Monnet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

diff --git a/drivers/net/ethernet/netronome/nfp/abm/qdisc.c b/drivers/net/ethernet/netronome/nfp/abm/qdisc.c
index 979afb3ea8555c1715aa0a41d6ebda6ed1e0bd8d..bb05f9ee0401c94bbedf1e667ada55aa9c35cb1f 100644 (file)
--- a/drivers/net/ethernet/netronome/nfp/abm/qdisc.c
+++ b/drivers/net/ethernet/netronome/nfp/abm/qdisc.c
@@ -83,6 +83,11 @@ nfp_abm_red_check_params(struct nfp_abm_link *alink,
                         opt->parent, opt->handle);
                return false;
        }
+       if (opt->set.is_harddrop) {
+               nfp_warn(cpp, "RED offload failed - harddrop is not supported (p:%08x h:%08x)\n",
+                        opt->parent, opt->handle);
+               return false;
+       }
        if (opt->set.min != opt->set.max) {
                nfp_warn(cpp, "RED offload failed - unsupported min/max parameters (p:%08x h:%08x)\n",
                         opt->parent, opt->handle);