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/linux/include/net/tc_act/
H A Dtc_skbedit.hdiff a9c64939b669b3c83cc54738d1986430e6beaff2 Thu Apr 07 09:35:28 CEST 2022 Ido Schimmel <idosch@nvidia.com> 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>
/linux/net/sched/
H A Dact_skbedit.cdiff a9c64939b669b3c83cc54738d1986430e6beaff2 Thu Apr 07 09:35:28 CEST 2022 Ido Schimmel <idosch@nvidia.com> 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>