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bridge: fdb: add flush [no]dynamic entry matching

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Add flush support to match dynamic or non-dynamic (static or permanent)
entries if "no" is prepended respectively. Note that dynamic entries are
defined as fdbs without NUD_NOARP and NUD_PERMANENT set, and non-dynamic
entries are fdbs with NUD_NOARP set (that matches both static and
permanent entries).

Examples:
$ bridge fdb flush dev br0 dynamic
This will delete all dynamic entries in br0's fdb table.

$ bridge fdb flush dev br0 nodynamic
This will delete all entries except the dynamic ones in br0's fdb
table.

Signed-off-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David Ahern <dsahern@kernel.org>
This commit is contained in:
Nikolay Aleksandrov 2022-06-08 15:29:17 +03:00 committed by David Ahern
parent 0f6c81a63c
commit 8198f75073
2 changed files with 13 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
bridge/fdb.c
View File

@ -46,7 +46,7 @@ static void usage(void)
" bridge fdb get [ to ] LLADDR [ br BRDEV ] { brport | dev } DEV\n"
" [ vlan VID ] [ vni VNI ] [ self ] [ master ] [ dynamic ]\n"
" bridge fdb flush dev DEV [ brport DEV ] [ vlan VID ]\n"
" [ self ] [ master ] [ [no]permanent | [no]static ]\n");
" [ self ] [ master ] [ [no]permanent | [no]static | [no]dynamic ]\n");
exit(-1);
}
@ -706,6 +706,12 @@ static int fdb_flush(int argc, char **argv)
} else if (strcmp(*argv, "nostatic") == 0) {
ndm_state &= ~NUD_NOARP;
ndm_state_mask |= NUD_NOARP;
} else if (strcmp(*argv, "dynamic") == 0) {
ndm_state &= ~NUD_NOARP | NUD_PERMANENT;
ndm_state_mask |= NUD_NOARP | NUD_PERMANENT;
} else if (strcmp(*argv, "nodynamic") == 0) {
ndm_state |= NUD_NOARP;
ndm_state_mask |= NUD_NOARP;
} else if (strcmp(*argv, "brport") == 0) {
if (port)
duparg2("brport", *argv);

7
man/man8/bridge.8
View File

@ -121,7 +121,7 @@ bridge \- show / manipulate bridge addresses and devices
.B vlan
.IR VID " ] [ "
.BR self " ] [ " master " ] [ "
.BR [no]permanent " | " [no]static " ]"
.BR [no]permanent " | " [no]static " | " [no]dynamic " ]"
.ti -8
.BR "bridge mdb" " { " add " | " del " } "
@ -838,6 +838,11 @@ is prepended then only non-permanent entries will be deleted.
.B [no]static
if specified then only static entries will be deleted or respectively if "no"
is prepended then only non-static entries will be deleted.
.TP
.B [no]dynamic
if specified then only dynamic entries will be deleted or respectively if "no"
is prepended then only non-dynamic (static or permanent) entries will be deleted.
.sp
.SH bridge mdb - multicast group database management