diff options
| author | Roopa Prabhu <roopa@nvidia.com> | 2022-03-01 08:04:33 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-03-01 11:38:02 +0300 |
| commit | efe0f94b333bf73dae0649937d40fbb15b3165e1 (patch) | |
| tree | a81f05b86cc3339b27c18e815797e81dce9f6577 /drivers | |
| parent | a9508d121a0ec3ba53a32f8c197223cbf19074c2 (diff) | |
| download | linux-efe0f94b333bf73dae0649937d40fbb15b3165e1.tar.xz | |
vxlan_core: add helper vxlan_vni_in_use
more users in follow up patches
Signed-off-by: Roopa Prabhu <roopa@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/vxlan/vxlan_core.c | 46 |
1 files changed, 28 insertions, 18 deletions
diff --git a/drivers/net/vxlan/vxlan_core.c b/drivers/net/vxlan/vxlan_core.c index df8ef919216c..8c193d47c1e4 100644 --- a/drivers/net/vxlan/vxlan_core.c +++ b/drivers/net/vxlan/vxlan_core.c @@ -3554,13 +3554,38 @@ 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) { @@ -3693,22 +3718,7 @@ 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; |