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

For better error reporting to user space, add an extack message when
mirred 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 ingress/egress
mirror/redirect.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel 2022-04-07 10:35:24 +03:00 committed by David S. Miller
parent 69642c2ab2
commit 4dcaa50d02
1 changed files with 1 additions and 0 deletions
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net/sched/act_mirred.c
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@ -479,6 +479,7 @@ static int tcf_mirred_offload_act_setup(struct tc_action *act, void *entry_data,
entry->id = FLOW_ACTION_MIRRED_INGRESS; entry->id = FLOW_ACTION_MIRRED_INGRESS;
tcf_offload_mirred_get_dev(entry, act); tcf_offload_mirred_get_dev(entry, act);
} else { } else {
NL_SET_ERR_MSG_MOD(extack, "Unsupported mirred offload");
return -EOPNOTSUPP; return -EOPNOTSUPP;
} }
*index_inc = 1; *index_inc = 1;