diff options
Diffstat (limited to 'share/man')
| -rw-r--r-- | share/man/man4/ng_bridge.4 | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/share/man/man4/ng_bridge.4 b/share/man/man4/ng_bridge.4 index 85c2d8871c7c..b5937375e87a 100644 --- a/share/man/man4/ng_bridge.4 +++ b/share/man/man4/ng_bridge.4 @@ -34,7 +34,7 @@ .\" .\" $FreeBSD$ .\" -.Dd October 2, 2019 +.Dd February 6, 2021 .Dt NG_BRIDGE 4 .Os .Sh NAME @@ -92,6 +92,23 @@ To connect the host machine to a bridged network, simply connect the hook of an .Xr ng_ether 4 node to the bridge node. +.Pp +Instead of naming a hook +.Dv linkX +the hook might be also named +.Dv uplinkX . +The node does not learn MAC addresses on uplink hooks, which keeps +the internal address table small. +This way it is desirable to connect the +.Dv lower +hook of an +.Xr ng_ether 4 +node to an +.Dv uplink +hook of the bridge, and ignore the complexity of the outside world. +Frames with unknown MACs are always sent out to +.Dv uplink +hooks, so no functionality is lost. .Sh CONTROL MESSAGES This node type supports the generic control messages, plus the following: @@ -141,8 +158,9 @@ The node configuration is not changed. This command takes a four byte link number as an argument and returns a .Dv "struct ng_bridge_link_stats" -containing statistics for the corresponding link, which must be -currently connected: +containing statistics for the corresponding +.Dv link , +which must be currently connected: .Bd -literal -offset 0n /* Statistics structure (one for each link) */ struct ng_bridge_link_stats { @@ -162,6 +180,12 @@ struct ng_bridge_link_stats { uint64_t memoryFailures; /* times couldn't get mem or mbuf */ }; .Ed +.Pp +Negative numbers refer to the +.Dv uplink +hooks. +So querying for -7 will get the statistics for hook +.Dv uplink7 . .It Dv NGM_BRIDGE_CLR_STATS Pq Ic clrstats This command takes a four byte link number as an argument and clears the statistics for that link. |