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authorIdo Schimmel <idosch@nvidia.com>2022-04-07 10:35:31 +0300
committerDavid S. Miller <davem@davemloft.net>2022-04-08 13:45:43 +0100
commitc440615ffbcb9c06975103e5abbcb094589329d1 (patch)
treef961fad2f539517950b67183d0cc36842ef474a4 /net/sched/cls_api.c
parentf8fab3169464623b88d0f423f8de2b28809c2fcf (diff)
net/sched: cls_api: Add extack message for unsupported action offload
For better error reporting to user space, add an extack message when the requested action does not support offload. Example: # echo 1 > /sys/kernel/tracing/events/netlink/netlink_extack/enable # tc filter add dev dummy0 ingress pref 1 proto all matchall skip_sw action nat ingress 192.0.2.1 198.51.100.1 Error: cls_matchall: Failed to setup flow action. We have an error talking to the kernel # cat /sys/kernel/tracing/trace_pipe tc-181 [000] b..1. 88.406093: netlink_extack: msg=Action does not support offload tc-181 [000] ..... 88.406108: netlink_extack: msg=cls_matchall: Failed to setup flow action Signed-off-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: Petr Machata <petrm@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/cls_api.c')
-rw-r--r--net/sched/cls_api.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index dd711ae048ff..d8a22bedd026 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -3517,11 +3517,13 @@ static int tc_setup_offload_act(struct tc_action *act,
struct netlink_ext_ack *extack)
{
#ifdef CONFIG_NET_CLS_ACT
- if (act->ops->offload_act_setup)
+ if (act->ops->offload_act_setup) {
return act->ops->offload_act_setup(act, entry, index_inc, true,
extack);
- else
+ } else {
+ NL_SET_ERR_MSG(extack, "Action does not support offload");
return -EOPNOTSUPP;
+ }
#else
return 0;
#endif