The MAB feature can be enabled on a locked port with the command:
bridge link set dev <DEV> mab on
Examples of output when the feature is enabled:
$ bridge -d link show dev eth1
1: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 master testbr state forwarding priority 32 cost 2
hairpin off guard off root_block off fastleave off learning on flood on mcast_flood on bcast_flood on mcast_router 1 mcast_to_unicast off neigh_suppress off vlan_tunnel off isolated off locked on mab on
$ bridge -d -j -p link show dev eth1
[ {
"ifindex": 1,
"ifname": "eth1",
"flags": [ "BROADCAST","MULTICAST","UP","LOWER_UP" ],
"mtu": 1500,
"master": "br0",
"state": "forwarding",
"priority": 32,
"cost": 2,
"hairpin": false,
"guard": false,
"root_block": false,
"fastleave": false,
"learning": true,
"flood": true,
"mcast_flood": true,
"bcast_flood": true,
"mcast_router": 1,
"mcast_to_unicast": false,
"neigh_suppress": false,
"vlan_tunnel": false,
"isolated": false,
"locked": true,
"mab": true
} ]
Signed-off-by: Hans Schultz <netdev@xxxxxxxxxxxxxxxxxxxx>
---
bridge/link.c | 13 +++++++++++++
ip/iplink_bridge_slave.c | 9 +++++++++
man/man8/bridge.8 | 12 ++++++++++++
man/man8/ip-link.8.in | 14 ++++++++++++++
4 files changed, 48 insertions(+)
diff --git a/bridge/link.c b/bridge/link.c
index 3810fa04..25a45860 100644
--- a/bridge/link.c
+++ b/bridge/link.c
@@ -184,6 +184,9 @@ static void print_protinfo(FILE *fp, struct rtattr *attr)
if (prtb[IFLA_BRPORT_LOCKED])
print_on_off(PRINT_ANY, "locked", "locked %s ",
rta_getattr_u8(prtb[IFLA_BRPORT_LOCKED]));
+ if (prtb[IFLA_BRPORT_MAB])
+ print_on_off(PRINT_ANY, "mab", "mab %s ",
+ rta_getattr_u8(prtb[IFLA_BRPORT_MAB]));
} else
print_stp_state(rta_getattr_u8(attr));
}
@@ -281,6 +284,7 @@ static void usage(void)
" [ vlan_tunnel {on | off} ]\n"
" [ isolated {on | off} ]\n"
" [ locked {on | off} ]\n"
+ " [ mab {on | off} ]\n"
" [ hwmode {vepa | veb} ]\n"
" [ backup_port DEVICE ] [ nobackup_port ]\n"
" [ self ] [ master ]\n"
@@ -312,6 +316,7 @@ static int brlink_modify(int argc, char **argv)
__s8 bcast_flood = -1;
__s8 mcast_to_unicast = -1;
__s8 locked = -1;
+ __s8 macauth = -1;
__s8 isolated = -1;
__s8 hairpin = -1;
__s8 bpdu_guard = -1;
@@ -437,6 +442,11 @@ static int brlink_modify(int argc, char **argv)
locked = parse_on_off("locked", *argv, &ret);
if (ret)
return ret;
+ } else if (strcmp(*argv, "mab") == 0) {
+ NEXT_ARG();
+ macauth = parse_on_off("mab", *argv, &ret);
+ if (ret)
+ return ret;
} else if (strcmp(*argv, "backup_port") == 0) {
NEXT_ARG();
backup_port_idx = ll_name_to_index(*argv);
@@ -520,6 +530,9 @@ static int brlink_modify(int argc, char **argv)
if (locked >= 0)
addattr8(&req.n, sizeof(req), IFLA_BRPORT_LOCKED, locked);
+ if (macauth >= 0)
+ addattr8(&req.n, sizeof(req), IFLA_BRPORT_MAB, macauth);
+
if (backup_port_idx != -1)
addattr32(&req.n, sizeof(req), IFLA_BRPORT_BACKUP_PORT,
backup_port_idx);
diff --git a/ip/iplink_bridge_slave.c b/ip/iplink_bridge_slave.c
index 98d17213..e5262bdb 100644
--- a/ip/iplink_bridge_slave.c
+++ b/ip/iplink_bridge_slave.c
@@ -44,6 +44,7 @@ static void print_explain(FILE *f)
" [ vlan_tunnel {on | off} ]\n"
" [ isolated {on | off} ]\n"
" [ locked {on | off} ]\n"
+ " [ mab {on | off} ]\n"
" [ backup_port DEVICE ] [ nobackup_port ]\n"
);
}
@@ -288,6 +289,10 @@ static void bridge_slave_print_opt(struct link_util *lu, FILE *f,
print_on_off(PRINT_ANY, "locked", "locked %s ",
rta_getattr_u8(tb[IFLA_BRPORT_LOCKED]));
+ if (tb[IFLA_BRPORT_MAB])
+ print_on_off(PRINT_ANY, "mab", "mab %s ",
+ rta_getattr_u8(tb[IFLA_BRPORT_MAB]));
+
if (tb[IFLA_BRPORT_BACKUP_PORT]) {
int backup_p = rta_getattr_u32(tb[IFLA_BRPORT_BACKUP_PORT]);
@@ -411,6 +416,10 @@ static int bridge_slave_parse_opt(struct link_util *lu, int argc, char **argv,
NEXT_ARG();
bridge_slave_parse_on_off("locked", *argv, n,
IFLA_BRPORT_LOCKED);
+ } else if (matches(*argv, "mab") == 0) {
+ NEXT_ARG();
+ bridge_slave_parse_on_off("mab", *argv, n,
+ IFLA_BRPORT_MAB);
} else if (matches(*argv, "backup_port") == 0) {
int ifindex;
diff --git a/man/man8/bridge.8 b/man/man8/bridge.8
index d4df772e..f4f1d807 100644
--- a/man/man8/bridge.8
+++ b/man/man8/bridge.8
@@ -54,6 +54,7 @@ bridge \- show / manipulate bridge addresses and devices
.BR vlan_tunnel " { " on " | " off " } ] [ "
.BR isolated " { " on " | " off " } ] [ "
.BR locked " { " on " | " off " } ] [ "
+.BR mab " { " on " | " off " } ] [ "
.B backup_port
.IR DEVICE " ] ["
.BR nobackup_port " ] [ "
@@ -580,6 +581,17 @@ The common use is that hosts are allowed access through authentication
with the IEEE 802.1X protocol or based on whitelists or like setups.
By default this flag is off.
+.TP
+.BR "mab on " or " mab off "
+Enables or disables the MAB/MacAuth feature. This feature can only be
+enabled on a port that is in locked mode, and when enabled it extends the
+locked port feature so that a host can get access through a locked
+port based on acceptlists, thus it is a much simpler procedure for a
+device to become authorized than f.ex. the 802.1X protocol, and is used
+for devices that are not capable of password or crypto based authorization
+methods.
+The feature triggers a 'locked' FDB entry when a host tries to communicate
+through the MAB enabled port.
.TP
.BI backup_port " DEVICE"
diff --git a/man/man8/ip-link.8.in b/man/man8/ip-link.8.in
index fc9d62fc..5f31f80a 100644
--- a/man/man8/ip-link.8.in
+++ b/man/man8/ip-link.8.in
@@ -2454,6 +2454,9 @@ the following additional arguments are supported:
.BR isolated " { " on " | " off " }"
] [
.BR locked " { " on " | " off " }"
+] [
+.BR mab " { " on " | " off " }"
+] [
.BR backup_port " DEVICE"
] [
.BR nobackup_port " ]"
@@ -2560,6 +2563,17 @@ default this flag is off.
behind the port cannot communicate through the port unless a FDB entry
representing the host is in the FDB. By default this flag is off.
+.BR mab " { " on " | " off " }"
+- Enables or disables the MAB/MacAuth feature. This feature can only be
+enabled on a port that is in locked mode, and when enabled it extends the
+locked port feature so that a host can get access through a locked
+port based on acceptlists, thus it is a much simpler procedure for a
+device to become authorized than f.ex. the 802.1X protocol, and is used
+for devices that are not capable of password or crypto based authorization
+methods.
+The feature triggers a 'locked' FDB entry when a host tries to communicate
+through the MAB enabled port.
+
.BI backup_port " DEVICE"
- if the port loses carrier all traffic will be redirected to the
configured backup port
--
2.34.1
