korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-15 16:24:13 +08:00
Code Issues Packages Projects Releases Wiki Activity

switchdev: documentation: fix longer-than-80-char lines

Browse Source 
Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Scott Feldman 2015-06-03 20:43:40 -07:00 committed by David S. Miller
parent 9d1dabfbd0
commit f5ed2febda
1 changed files with 18 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
Documentation/networking/switchdev.txt
View File

@ -114,11 +114,11 @@ would be sub-port 0 on port 1 on switch 1.
Switch ID
^^^^^^^^^
The switchdev driver must implement the switchdev op switchdev_port_attr_get for
SWITCHDEV_ATTR_PORT_PARENT_ID for each port netdev, returning the same physical ID
for each port of a switch. The ID must be unique between switches on the same
system. The ID does not need to be unique between switches on different
systems.
The switchdev driver must implement the switchdev op switchdev_port_attr_get
for SWITCHDEV_ATTR_PORT_PARENT_ID for each port netdev, returning the same
physical ID for each port of a switch. The ID must be unique between switches
on the same system. The ID does not need to be unique between switches on
different systems.
The switch ID is used to locate ports on a switch and to know if aggregated
ports belong to the same switch.
@ -194,11 +194,11 @@ in turn, will notify the bridge driver using the switchdev notifier call:
err = call_switchdev_notifiers(val, dev, info);
Where val is SWITCHDEV_FDB_ADD when learning and SWITCHDEV_FDB_DEL when forgetting, and
info points to a struct switchdev_notifier_fdb_info. On SWITCHDEV_FDB_ADD, the bridge
driver will install the FDB entry into the bridge's FDB and mark the entry as
NTF_EXT_LEARNED. The iproute2 bridge command will label these entries
"offload":
Where val is SWITCHDEV_FDB_ADD when learning and SWITCHDEV_FDB_DEL when
forgetting, and info points to a struct switchdev_notifier_fdb_info. On
SWITCHDEV_FDB_ADD, the bridge driver will install the FDB entry into the
bridge's FDB and mark the entry as NTF_EXT_LEARNED. The iproute2 bridge
command will label these entries "offload":
$ bridge fdb
52:54:00:12:35:01 dev sw1p1 master br0 permanent
@ -229,18 +229,18 @@ the bridge's FDB. It's possible, but not optimal, to enable learning on the
device port and on the bridge port, and disable learning_sync.
To support learning and learning_sync port attributes, the driver implements
switchdev op switchdev_port_attr_get/set for SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS. The driver
should initialize the attributes to the hardware defaults.
switchdev op switchdev_port_attr_get/set for SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS.
The driver should initialize the attributes to the hardware defaults.
FDB Ageing
^^^^^^^^^^
There are two FDB ageing models supported: 1) ageing by the device, and 2)
ageing by the kernel. Ageing by the device is preferred if many FDB entries
are supported. The driver calls call_switchdev_notifiers(SWITCHDEV_FDB_DEL, ...) to
age out the FDB entry. In this model, ageing by the kernel should be turned
off. XXX: how to turn off ageing in kernel on a per-port basis or otherwise
prevent the kernel from ageing out the FDB entry?
are supported. The driver calls call_switchdev_notifiers(SWITCHDEV_FDB_DEL,
...) to age out the FDB entry. In this model, ageing by the kernel should be
turned off. XXX: how to turn off ageing in kernel on a per-port basis or
otherwise prevent the kernel from ageing out the FDB entry?
In the kernel ageing model, the standard bridge ageing mechanism is used to age
out stale FDB entries. To keep an FDB entry "alive", the driver should refresh
@ -262,8 +262,8 @@ STP State Change on Port
Internally or with a third-party STP protocol implementation (e.g. mstpd), the
bridge driver maintains the STP state for ports, and will notify the switch
driver of STP state change on a port using the switchdev op switchdev_attr_port_set for
SWITCHDEV_ATTR_PORT_STP_UPDATE.
driver of STP state change on a port using the switchdev op
switchdev_attr_port_set for SWITCHDEV_ATTR_PORT_STP_UPDATE.
State is one of BR_STATE_*. The switch driver can use STP state updates to
update ingress packet filter list for the port. For example, if port is