Re: [PATCH net-next 00/14] net/sched: Better error reporting for offload failures

[Jamal Hadi Salim <jhs@mojatatu.com>]

Excellent work.

Small comment, maybe a better message is:
"Failed to setup offload flow action"?

cheers,
jamal

On 2022-04-07 03:35, Ido Schimmel wrote:
> This patchset improves error reporting to user space when offload fails
> during the flow action setup phase. That is, when failures occur in the
> actions themselves, even before calling device drivers. Requested /
> reported in [1].
> 
> This is done by passing extack to the offload_act_setup() callback and
> making use of it in the various actions.
> 
> Patches #1-#2 change matchall and flower to log error messages to user
> space in accordance with the verbose flag.
> 
> Patch #3 passes extack to the offload_act_setup() callback from the
> various call sites, including matchall and flower.
> 
> Patches #4-#11 make use of extack in the various actions to report
> offload failures.
> 
> Patch #12 adds an error message when the action does not support offload
> at all.
> 
> Patches #13-#14 change matchall and flower to stop overwriting more
> specific error messages.
> 
> [1] https://lore.kernel.org/netdev/20220317185249.5mff5u2x624pjewv@skbuf/
> 
> Ido Schimmel (14):
>    net/sched: matchall: Take verbose flag into account when logging error
>      messages
>    net/sched: flower: Take verbose flag into account when logging error
>      messages
>    net/sched: act_api: Add extack to offload_act_setup() callback
>    net/sched: act_gact: Add extack messages for offload failure
>    net/sched: act_mirred: Add extack message for offload failure
>    net/sched: act_mpls: Add extack messages for offload failure
>    net/sched: act_pedit: Add extack message for offload failure
>    net/sched: act_police: Add extack messages for offload failure
>    net/sched: act_skbedit: Add extack messages for offload failure
>    net/sched: act_tunnel_key: Add extack message for offload failure
>    net/sched: act_vlan: Add extack message for offload failure
>    net/sched: cls_api: Add extack message for unsupported action offload
>    net/sched: matchall: Avoid overwriting error messages
>    net/sched: flower: Avoid overwriting error messages
> 
>   include/net/act_api.h           |  3 ++-
>   include/net/pkt_cls.h           |  6 ++++--
>   include/net/tc_act/tc_gact.h    | 15 +++++++++++++++
>   include/net/tc_act/tc_skbedit.h | 12 ++++++++++++
>   net/sched/act_api.c             |  4 ++--
>   net/sched/act_csum.c            |  3 ++-
>   net/sched/act_ct.c              |  3 ++-
>   net/sched/act_gact.c            | 13 ++++++++++++-
>   net/sched/act_gate.c            |  3 ++-
>   net/sched/act_mirred.c          |  4 +++-
>   net/sched/act_mpls.c            | 10 +++++++++-
>   net/sched/act_pedit.c           |  4 +++-
>   net/sched/act_police.c          | 20 ++++++++++++++++----
>   net/sched/act_sample.c          |  3 ++-
>   net/sched/act_skbedit.c         | 10 +++++++++-
>   net/sched/act_tunnel_key.c      |  4 +++-
>   net/sched/act_vlan.c            |  4 +++-
>   net/sched/cls_api.c             | 22 ++++++++++++++--------
>   net/sched/cls_flower.c          | 14 ++++++--------
>   net/sched/cls_matchall.c        | 19 +++++++------------
>   20 files changed, 128 insertions(+), 48 deletions(-)
>