The action is used by control traps such as IGMP query. The packet is flooded by the device, but also trapped to the CPU in order for the software bridge to mark the receiving port as a multicast router port. Such packets are marked with 'skb->offload_fwd_mark = 1' in order to prevent the software bridge from flooding them again.
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| @@ -233,10 +233,13 @@ enum { · 232 unmodified lines | ||
| 233 | 233 | * @DEVLINK_TRAP_ACTION_DROP: Packet is dropped by the device and a copy is not |
| 234 | 234 | * sent to the CPU. |
| 235 | 235 | * @DEVLINK_TRAP_ACTION_TRAP: The sole copy of the packet is sent to the CPU. |
| 236 | + * @DEVLINK_TRAP_ACTION_MIRROR: Packet is forwarded by the device and a copy is | |
| 237 | + * sent to the CPU. | |
| 236 | 238 | */ |
| 237 | 239 | enum devlink_trap_action { |
| 238 | 240 | DEVLINK_TRAP_ACTION_DROP, |
| 239 | 241 | DEVLINK_TRAP_ACTION_TRAP, |
| 242 | + DEVLINK_TRAP_ACTION_MIRROR, | |
| 240 | 243 | }; |
| 241 | 244 | |
| 242 | 245 | /** |