From: Ido Schimmel <idosch@nvidia.com>
Date: Thu, 7 Apr 2022 07:35:30 +0000 (+0300)
Subject: net/sched: act_vlan: Add extack message for offload failure
X-Git-Tag: for-5.19/block-exec-2022-06-02~49^2~366^2~3
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=f8fab3169464623b88d0f423f8de2b28809c2fcf;p=linux-block.git

net/sched: act_vlan: Add extack message for offload failure

For better error reporting to user space, add an extack message when
vlan action offload fails.

Currently, the failure cannot be triggered, but add a message in case
the action is extended in the future to support more than the current
set of modes.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/sched/act_vlan.c b/net/sched/act_vlan.c
index 8c89bce99cbd..68b5e772386a 100644
--- a/net/sched/act_vlan.c
+++ b/net/sched/act_vlan.c
@@ -399,6 +399,7 @@ static int tcf_vlan_offload_act_setup(struct tc_action *act, void *entry_data,
 			tcf_vlan_push_eth(entry->vlan_push_eth.src, entry->vlan_push_eth.dst, act);
 			break;
 		default:
+			NL_SET_ERR_MSG_MOD(extack, "Unsupported vlan action mode offload");
 			return -EOPNOTSUPP;
 		}
 		*index_inc = 1;