Files
linux/include/net
Ido Schimmel a9c64939b6 net/sched: act_skbedit: Add extack messages for offload failure
For better error reporting to user space, add extack messages when
skbedit action offload fails.

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 skbedit queue_mapping 1234
 Error: cls_matchall: Failed to setup flow action.
 We have an error talking to the kernel

 # cat /sys/kernel/tracing/trace_pipe
       tc-185     [002] b..1.    31.802414: netlink_extack: msg=act_skbedit: Offload not supported when "queue_mapping" option is used
       tc-185     [002] .....    31.802418: netlink_extack: msg=cls_matchall: Failed to setup flow action

 # tc filter add dev dummy0 ingress pref 1 proto all matchall skip_sw action skbedit inheritdsfield
 Error: cls_matchall: Failed to setup flow action.
 We have an error talking to the kernel

 # cat /sys/kernel/tracing/trace_pipe
       tc-187     [002] b..1.    45.985145: netlink_extack: msg=act_skbedit: Offload not supported when "inheritdsfield" option is used
       tc-187     [002] .....    45.985160: 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>
2022-04-08 13:45:43 +01:00
..
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