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| author | Ido Schimmel <idosch@mellanox.com> | 2019-08-17 15:28:21 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-08-17 21:40:09 +0200 |
| commit | 9e087457048884c57c51a32b52d8aa1d9b0d7385 (patch) | |
| tree | 05c12d161dd31549585d1bdc732cc9c9caf2a051 | |
| parent | netdevsim: Add devlink-trap support (diff) | |
| download | linux-9e087457048884c57c51a32b52d8aa1d9b0d7385.tar.xz linux-9e087457048884c57c51a32b52d8aa1d9b0d7385.zip | |
Documentation: Add description of netdevsim traps
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | Documentation/networking/devlink-trap-netdevsim.rst | 20 | ||||
| -rw-r--r-- | Documentation/networking/devlink-trap.rst | 11 | ||||
| -rw-r--r-- | Documentation/networking/index.rst | 1 | ||||
| -rw-r--r-- | drivers/net/netdevsim/dev.c | 3 |
4 files changed, 35 insertions, 0 deletions
diff --git a/Documentation/networking/devlink-trap-netdevsim.rst b/Documentation/networking/devlink-trap-netdevsim.rst new file mode 100644 index 000000000000..b721c9415473 --- /dev/null +++ b/Documentation/networking/devlink-trap-netdevsim.rst @@ -0,0 +1,20 @@ +.. SPDX-License-Identifier: GPL-2.0 + +====================== +Devlink Trap netdevsim +====================== + +Driver-specific Traps +===================== + +.. list-table:: List of Driver-specific Traps Registered by ``netdevsim`` + :widths: 5 5 90 + + * - Name + - Type + - Description + * - ``fid_miss`` + - ``exception`` + - When a packet enters the device it is classified to a filtering + indentifier (FID) based on the ingress port and VLAN. This trap is used + to trap packets for which a FID could not be found diff --git a/Documentation/networking/devlink-trap.rst b/Documentation/networking/devlink-trap.rst index dbc7a3e00fd8..fe4f6e149623 100644 --- a/Documentation/networking/devlink-trap.rst +++ b/Documentation/networking/devlink-trap.rst @@ -162,6 +162,17 @@ be added to the following table: - Traps packets that the device decided to drop because they could not be enqueued to a transmission queue which is full +Driver-specific Packet Traps +============================ + +Device drivers can register driver-specific packet traps, but these must be +clearly documented. Such traps can correspond to device-specific exceptions and +help debug packet drops caused by these exceptions. The following list includes +links to the description of driver-specific traps registered by various device +drivers: + + * :doc:`/devlink-trap-netdevsim` + Generic Packet Trap Groups ========================== diff --git a/Documentation/networking/index.rst b/Documentation/networking/index.rst index 86a814e4d450..37eabc17894c 100644 --- a/Documentation/networking/index.rst +++ b/Documentation/networking/index.rst @@ -15,6 +15,7 @@ Contents: dsa/index devlink-info-versions devlink-trap + devlink-trap-netdevsim ieee802154 kapi z8530book diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c index d07bbf0ab627..c217049552f7 100644 --- a/drivers/net/netdevsim/dev.c +++ b/drivers/net/netdevsim/dev.c @@ -323,6 +323,9 @@ struct nsim_trap_data { spinlock_t trap_lock; /* Protects trap_items_arr */ }; +/* All driver-specific traps must be documented in + * Documentation/networking/devlink-trap-netdevsim.rst + */ enum { NSIM_TRAP_ID_BASE = DEVLINK_TRAP_GENERIC_ID_MAX, NSIM_TRAP_ID_FID_MISS, |