diff mbox series

[net-next,1/5] netdevsim: add extack support for TC eBPF offload

Message ID 20180123192256.16106-2-jakub.kicinski@netronome.com
State Accepted, archived
Delegated to: David Miller
Headers show
Series bpf and netdevsim test updates | expand

Commit Message

Jakub Kicinski Jan. 23, 2018, 7:22 p.m. UTC 
From: Quentin Monnet <quentin.monnet@netronome.com>

Use the recently added extack support for TC eBPF filters in netdevsim.

Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
---
 drivers/net/netdevsim/bpf.c | 35 ++++++++++++++++++++++++++++-------
 1 file changed, 28 insertions(+), 7 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/netdevsim/bpf.c b/drivers/net/netdevsim/bpf.c
index b3851bbefad3..940c63eeebf9 100644
--- a/drivers/net/netdevsim/bpf.c
+++ b/drivers/net/netdevsim/bpf.c
@@ -123,17 +123,35 @@  int nsim_bpf_setup_tc_block_cb(enum tc_setup_type type,
 	struct netdevsim *ns = cb_priv;
 	struct bpf_prog *oldprog;
 
-	if (type != TC_SETUP_CLSBPF ||
-	    !tc_can_offload(ns->netdev) ||
-	    cls_bpf->common.protocol != htons(ETH_P_ALL) ||
-	    cls_bpf->common.chain_index)
+	if (type != TC_SETUP_CLSBPF) {
+		NSIM_EA(cls_bpf->common.extack,
+			"only offload of BPF classifiers supported");
 		return -EOPNOTSUPP;
+	}
+
+	if (!tc_can_offload_extack(ns->netdev, cls_bpf->common.extack))
+		return -EOPNOTSUPP;
+
+	if (cls_bpf->common.protocol != htons(ETH_P_ALL)) {
+		NSIM_EA(cls_bpf->common.extack,
+			"only ETH_P_ALL supported as filter protocol");
+		return -EOPNOTSUPP;
+	}
 
-	if (!ns->bpf_tc_accept)
+	if (cls_bpf->common.chain_index)
 		return -EOPNOTSUPP;
+
+	if (!ns->bpf_tc_accept) {
+		NSIM_EA(cls_bpf->common.extack,
+			"netdevsim configured to reject BPF TC offload");
+		return -EOPNOTSUPP;
+	}
 	/* Note: progs without skip_sw will probably not be dev bound */
-	if (prog && !prog->aux->offload && !ns->bpf_tc_non_bound_accept)
+	if (prog && !prog->aux->offload && !ns->bpf_tc_non_bound_accept) {
+		NSIM_EA(cls_bpf->common.extack,
+			"netdevsim configured to reject unbound programs");
 		return -EOPNOTSUPP;
+	}
 
 	if (cls_bpf->command != TC_CLSBPF_OFFLOAD)
 		return -EOPNOTSUPP;
@@ -145,8 +163,11 @@  int nsim_bpf_setup_tc_block_cb(enum tc_setup_type type,
 		oldprog = NULL;
 		if (!cls_bpf->prog)
 			return 0;
-		if (ns->bpf_offloaded)
+		if (ns->bpf_offloaded) {
+			NSIM_EA(cls_bpf->common.extack,
+				"driver and netdev offload states mismatch");
 			return -EBUSY;
+		}
 	}
 
 	return nsim_bpf_offload(ns, cls_bpf->prog, oldprog);