diff options
| author | Ido Schimmel <idosch@mellanox.com> | 2020-05-29 21:36:40 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-06-01 11:49:23 -0700 |
| commit | 30a4e9a29ab9aadfe6c5386ae4aa396b1d2556c2 (patch) | |
| tree | 87f5fd2b34514fd7ef932ab419bcebe4320329fd /Documentation/networking | |
| parent | 9eefeabed6f831018c15bd7e17d34967ee34d9dd (diff) | |
devlink: Add 'control' trap type
This type is used for traps that trap control packets such as ARP
request and IGMP query to the CPU.
Do not report such packets to the kernel's drop monitor as they were not
dropped by the device no encountered an exception during forwarding.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/networking')
| -rw-r--r-- | Documentation/networking/devlink/devlink-trap.rst | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/Documentation/networking/devlink/devlink-trap.rst b/Documentation/networking/devlink/devlink-trap.rst index 5b97327caefc..6c293cfa23ee 100644 --- a/Documentation/networking/devlink/devlink-trap.rst +++ b/Documentation/networking/devlink/devlink-trap.rst @@ -55,7 +55,7 @@ The following diagram provides a general overview of ``devlink-trap``:: | | +-------^--------+ | - | + | Non-control traps | +----+----+ | | Kernel's Rx path @@ -97,6 +97,12 @@ The ``devlink-trap`` mechanism supports the following packet trap types: processed by ``devlink`` and injected to the kernel's Rx path. Changing the action of such traps is not allowed, as it can easily break the control plane. + * ``control``: Trapped packets were trapped by the device because these are + control packets required for the correct functioning of the control plane. + For example, ARP request and IGMP query packets. Packets are injected to + the kernel's Rx path, but not reported to the kernel's drop monitor. + Changing the action of such traps is not allowed, as it can easily break + the control plane. .. _Trap-Actions: |