[PATCH net-next 05/12] vxlan_core: add helper vxlan_vni_in_use
From: Roopa Prabhu <hidden>
Date: 2022-02-20 14:05:50
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
more users in follow up patches Signed-off-by: Roopa Prabhu <redacted> --- drivers/net/vxlan/vxlan_core.c | 46 +++++++++++++++++++++------------- 1 file changed, 28 insertions(+), 18 deletions(-)
diff --git a/drivers/net/vxlan/vxlan_core.c b/drivers/net/vxlan/vxlan_core.c
index 3f3e606c3c7d..d17d450f2058 100644
--- a/drivers/net/vxlan/vxlan_core.c
+++ b/drivers/net/vxlan/vxlan_core.c@@ -3546,13 +3546,38 @@ static int vxlan_sock_add(struct vxlan_dev *vxlan) return ret; } +static int vxlan_vni_in_use(struct net *src_net, struct vxlan_dev *vxlan, + struct vxlan_config *conf, __be32 vni) +{ + struct vxlan_net *vn = net_generic(src_net, vxlan_net_id); + struct vxlan_dev *tmp; + + list_for_each_entry(tmp, &vn->vxlan_list, next) { + if (tmp == vxlan) + continue; + if (tmp->cfg.vni != vni) + continue; + if (tmp->cfg.dst_port != conf->dst_port) + continue; + if ((tmp->cfg.flags & (VXLAN_F_RCV_FLAGS | VXLAN_F_IPV6)) != + (conf->flags & (VXLAN_F_RCV_FLAGS | VXLAN_F_IPV6))) + continue; + + if ((conf->flags & VXLAN_F_IPV6_LINKLOCAL) && + tmp->cfg.remote_ifindex != conf->remote_ifindex) + continue; + + return -EEXIST; + } + + return 0; +} + static int vxlan_config_validate(struct net *src_net, struct vxlan_config *conf, struct net_device **lower, struct vxlan_dev *old, struct netlink_ext_ack *extack) { - struct vxlan_net *vn = net_generic(src_net, vxlan_net_id); - struct vxlan_dev *tmp; bool use_ipv6 = false; if (conf->flags & VXLAN_F_GPE) {
@@ -3685,22 +3710,7 @@ static int vxlan_config_validate(struct net *src_net, struct vxlan_config *conf, if (!conf->age_interval) conf->age_interval = FDB_AGE_DEFAULT; - list_for_each_entry(tmp, &vn->vxlan_list, next) { - if (tmp == old) - continue; - - if (tmp->cfg.vni != conf->vni) - continue; - if (tmp->cfg.dst_port != conf->dst_port) - continue; - if ((tmp->cfg.flags & (VXLAN_F_RCV_FLAGS | VXLAN_F_IPV6)) != - (conf->flags & (VXLAN_F_RCV_FLAGS | VXLAN_F_IPV6))) - continue; - - if ((conf->flags & VXLAN_F_IPV6_LINKLOCAL) && - tmp->cfg.remote_ifindex != conf->remote_ifindex) - continue; - + if (vxlan_vni_in_use(src_net, old, conf, conf->vni)) { NL_SET_ERR_MSG(extack, "A VXLAN device with the specified VNI already exists"); return -EEXIST;
--
2.25.1