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net: sched: introduce a TRAP control action

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There is need to instruct the HW offloaded path to push certain matched
packets to cpu/kernel for further analysis. So this patch introduces a
new TRAP control action to TC.

For kernel datapath, this action does not make much sense. So with the
same logic as in HW, new TRAP behaves similar to STOLEN. The skb is just
dropped in the datapath (and virtually ejected to an upper level, which
does not exist in case of kernel).

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Yotam Gigi <yotamg@mellanox.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2017-06-06 14:12:02 +02:00 • committed by David S. Miller
parent 928a759593
commit e25ea21ffa
15 changed files with 22 additions and 0 deletions
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1
net/sched/cls_bpf.c
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@ -70,6 +70,7 @@ static int cls_bpf_exec_opcode(int code)
case TC_ACT_OK:
case TC_ACT_SHOT:
case TC_ACT_STOLEN:
case TC_ACT_TRAP:
case TC_ACT_REDIRECT:
case TC_ACT_UNSPEC:
return code;