netdev - [PATCH iproute2-next 08/10] bridge: fdb: add flush [no]extern

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Message-Id: <20220608122921.3962382-9-razor@blackwall.org>
Date:   Wed,  8 Jun 2022 15:29:19 +0300
From:   Nikolay Aleksandrov <razor@...ckwall.org>
To:     netdev@...r.kernel.org
Cc:     dsahern@...il.com, stephen@...workplumber.org, roopa@...dia.com,
        Nikolay Aleksandrov <razor@...ckwall.org>
Subject: [PATCH iproute2-next 08/10] bridge: fdb: add flush [no]extern_learn entry matching

Add flush support to match entries with or without (if "no" is
prepended) extern_learn flag.

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

$ bridge fdb flush dev br0 noextern_learn
This will delete all entries except the ones with extern_learn flag in
br0's fdb table.

Signed-off-by: Nikolay Aleksandrov <razor@...ckwall.org>
---
 bridge/fdb.c      | 8 +++++++-
 man/man8/bridge.8 | 7 ++++++-
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/bridge/fdb.c b/bridge/fdb.c
index c57ad235b401..e64e21cb0cba 100644
--- a/bridge/fdb.c
+++ b/bridge/fdb.c
@@ -47,7 +47,7 @@ static void usage(void)
 		"              [ vlan VID ] [ vni VNI ] [ self ] [ master ] [ dynamic ]\n"
 		"       bridge fdb flush dev DEV [ brport DEV ] [ vlan VID ]\n"
 		"              [ self ] [ master ] [ [no]permanent | [no]static | [no]dynamic ]\n"
-		"              [ [no]added_by_user ]\n");
+		"              [ [no]added_by_user ] [ [no]extern_learn ]\n");
 	exit(-1);
 }
 
@@ -720,6 +720,12 @@ static int fdb_flush(int argc, char **argv)
 		} else if (strcmp(*argv, "noadded_by_user") == 0) {
 			ndm_flags &= ~NTF_USE;
 			ndm_flags_mask |= NTF_USE;
+		} else if (strcmp(*argv, "extern_learn") == 0) {
+			ndm_flags |= NTF_EXT_LEARNED;
+			ndm_flags_mask |= NTF_EXT_LEARNED;
+		} else if (strcmp(*argv, "noextern_learn") == 0) {
+			ndm_flags &= ~NTF_EXT_LEARNED;
+			ndm_flags_mask |= NTF_EXT_LEARNED;
 		} else if (strcmp(*argv, "brport") == 0) {
 			if (port)
 				duparg2("brport", *argv);
diff --git a/man/man8/bridge.8 b/man/man8/bridge.8
index b39c74823606..af343cc1a719 100644
--- a/man/man8/bridge.8
+++ b/man/man8/bridge.8
@@ -122,7 +122,7 @@ bridge \- show / manipulate bridge addresses and devices
 .IR VID " ] [ "
 .BR self " ] [ " master " ] [ "
 .BR [no]permanent " | " [no]static " | " [no]dynamic " ] [ "
-.BR [no]added_by_user " ]"
+.BR [no]added_by_user " ] [ " [no]extern_learn " ]"
 
 .ti -8
 .BR "bridge mdb" " { " add " | " del " } "
@@ -849,6 +849,11 @@ is prepended then only non-dynamic (static or permanent) entries will be deleted
 .B [no]added_by_user
 if specified then only entries with added_by_user flag will be deleted or respectively
 if "no" is prepended then only entries without added_by_user flag will be deleted.
+
+.TP
+.B [no]extern_learn
+if specified then only entries with extern_learn flag will be deleted or respectively
+if "no" is prepended then only entries without extern_learn flag will be deleted.
 .sp
 
 .SH bridge mdb - multicast group database management
-- 
2.35.1