Displaying 2 results from an estimated 2 matches for "config_bridge_default_fdb_max_learn".
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config_bridge_default_fdb_max_learned
2023 Jun 19
1
[Bridge] [PATCH net-next v2 3/3] net: bridge: Add a configurable default FDB learning limit
...8eca8a5c80c6..93f081ce8195 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -530,6 +530,8 @@ void br_dev_setup(struct net_device *dev)
br->bridge_ageing_time = br->ageing_time = BR_DEFAULT_AGEING_TIME;
dev->max_mtu = ETH_MAX_MTU;
+ br->fdb_max_learned_entries = CONFIG_BRIDGE_DEFAULT_FDB_MAX_LEARNED;
+
br_netfilter_rtable_init(br);
br_stp_timer_init(br);
br_multicast_init(br);
--
2.40.1
2023 Jun 19
4
[Bridge] [PATCH net-next v2 0/3, iproute2-next 0/1] bridge: Add a limit on learned FDB entries
Introduce a limit on the amount of learned FDB entries on a bridge,
configured by netlink with a build time default on bridge creation in
the kernel config.
For backwards compatibility the kernel config default is disabling the
limit (0).
Without any limit a malicious actor may OOM a kernel by spamming packets
with changing MAC addresses on their bridge port, so allow the bridge
creator to limit