| 123456789101112131415161718192021222324252627282930 |
- From 3f1a227cb071f65f6ecc4db9f399649869735a7c Mon Sep 17 00:00:00 2001
- From: David Bauer <[email protected]>
- Date: Sat, 17 Feb 2024 22:34:59 +0100
- Subject: [PATCH] net vxlan: don't learn non-unicast L2 destinations
- This patch avoids learning non-unicast targets in the vxlan FDB.
- They are non-unicast and thus should be sent to the broadcast-IPv6
- instead of a unicast address.
- Link: https://lore.kernel.org/netdev/[email protected]/
- Link: https://github.com/freifunk-gluon/gluon/issues/3191
- Signed-off-by: David Bauer <[email protected]>
- ---
- drivers/net/vxlan.c | 4 ++++
- 1 file changed, 4 insertions(+)
- --- a/drivers/net/vxlan/vxlan_core.c
- +++ b/drivers/net/vxlan/vxlan_core.c
- @@ -1446,6 +1446,10 @@ static bool vxlan_snoop(struct net_devic
- struct vxlan_fdb *f;
- u32 ifindex = 0;
-
- + /* Don't learn broadcast packets */
- + if (is_multicast_ether_addr(src_mac) || is_zero_ether_addr(src_mac))
- + return false;
- +
- #if IS_ENABLED(CONFIG_IPV6)
- if (src_ip->sa.sa_family == AF_INET6 &&
- (ipv6_addr_type(&src_ip->sin6.sin6_addr) & IPV6_ADDR_LINKLOCAL))
|
