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man8/bridge.8: explain self vs master for "bridge fdb add" 

The "usually hardware" and "usually software" distinctions make no
sense, try to clarify what these do based on the actual kernel behavior.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
This commit is contained in:
Vladimir Oltean 2021-02-11 12:45:01 +02:00 committed by Stephen Hemminger
parent b64ceb687d
commit 14f528a556
1 changed files with 12 additions and 3 deletions
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15
man/man8/bridge.8
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@ -533,12 +533,21 @@ specified.
.sp
.B self
- the address is associated with the port drivers fdb. Usually hardware
(default).
- the operation is fulfilled directly by the driver for the specified network
device. If the network device belongs to a master like a bridge, then the
bridge is bypassed and not notified of this operation (and if the device does
notify the bridge, it is driver-specific behavior and not mandated by this
flag, check the driver for more details). The "bridge fdb add" command can also
be used on the bridge device itself, and in this case, the added fdb entries
will be locally terminated (not forwarded). In the latter case, the "self" flag
is mandatory. The flag is set by default if "master" is not specified.
.sp
.B master
- the address is associated with master devices fdb. Usually software.
- if the specified network device is a port that belongs to a master device
such as a bridge, the operation is fulfilled by the master device's driver,
which may in turn notify the port driver too of the address. If the specified
device is a master itself, such as a bridge, this flag is invalid.
.sp
.B router