On Wed, Jul 8, 2026 at 9:57 PM Eric Dumazet [off-list ref] wrote:

In order to allow lockless readers in future patches, dynamically allocate
'struct vxlan_config' and convert 'vxlan->cfg' to an RCU protected pointer.

Updating configuration via vxlan_changelink() or __vxlan_dev_create()
now allocates a new struct vxlan_config, initializes it, and uses
rcu_assign_pointer() to publish it, freeing the previous config with
kfree_rcu().

Signed-off-by: Eric Dumazet <edumazet@google.com>
---
 .../mellanox/mlxsw/spectrum_nve_vxlan.c       |  14 +-
 .../mellanox/mlxsw/spectrum_switchdev.c       |  57 ++-
 drivers/net/vxlan/vxlan_core.c                | 336 +++++++++++-------
 drivers/net/vxlan/vxlan_mdb.c                 |  29 +-
 drivers/net/vxlan/vxlan_multicast.c           |  12 +-
 drivers/net/vxlan/vxlan_vnifilter.c           |  21 +-
 include/net/vxlan.h                           |   3 +-
 net/openvswitch/vport-vxlan.c                 |  31 +-
 8 files changed, 331 insertions(+), 172 deletions(-)

Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>