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vxlan: Factor out device configuration
This factors out the device configuration out of the RTNL newlink API which allows for in-kernel creation of VXLAN net_devices. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thomas Graf
David S. Miller
parent
e7030878fc
commit
0dfbdf4102
@ -55,10 +55,6 @@
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#define PORT_HASH_BITS 8
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#define PORT_HASH_SIZE (1<<PORT_HASH_BITS)
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#define VNI_HASH_BITS 10
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#define VNI_HASH_SIZE (1<<VNI_HASH_BITS)
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#define FDB_HASH_BITS 8
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#define FDB_HASH_SIZE (1<<FDB_HASH_BITS)
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#define FDB_AGE_DEFAULT 300 /* 5 min */
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#define FDB_AGE_INTERVAL (10 * HZ) /* rescan interval */
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@ -75,6 +71,7 @@ module_param(log_ecn_error, bool, 0644);
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MODULE_PARM_DESC(log_ecn_error, "Log packets received with corrupted ECN");
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static int vxlan_net_id;
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static struct rtnl_link_ops vxlan_link_ops;
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static const u8 all_zeros_mac[ETH_ALEN];
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@ -85,21 +82,6 @@ struct vxlan_net {
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spinlock_t sock_lock;
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};
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union vxlan_addr {
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struct sockaddr_in sin;
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struct sockaddr_in6 sin6;
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struct sockaddr sa;
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};
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struct vxlan_rdst {
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union vxlan_addr remote_ip;
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__be16 remote_port;
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u32 remote_vni;
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u32 remote_ifindex;
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struct list_head list;
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struct rcu_head rcu;
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};
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/* Forwarding table entry */
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struct vxlan_fdb {
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struct hlist_node hlist; /* linked list of entries */
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@ -112,31 +94,6 @@ struct vxlan_fdb {
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u8 flags; /* see ndm_flags */
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};
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/* Pseudo network device */
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struct vxlan_dev {
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struct hlist_node hlist; /* vni hash table */
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struct list_head next; /* vxlan's per namespace list */
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struct vxlan_sock *vn_sock; /* listening socket */
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struct net_device *dev;
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struct net *net; /* netns for packet i/o */
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struct vxlan_rdst default_dst; /* default destination */
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union vxlan_addr saddr; /* source address */
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__be16 dst_port;
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__u16 port_min; /* source port range */
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__u16 port_max;
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__u8 tos; /* TOS override */
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__u8 ttl;
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u32 flags; /* VXLAN_F_* in vxlan.h */
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unsigned long age_interval;
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struct timer_list age_timer;
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spinlock_t hash_lock;
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unsigned int addrcnt;
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unsigned int addrmax;
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struct hlist_head fdb_head[FDB_HASH_SIZE];
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};
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/* salt for hash table */
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static u32 vxlan_salt __read_mostly;
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static struct workqueue_struct *vxlan_wq;
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@ -352,7 +309,7 @@ static int vxlan_fdb_info(struct sk_buff *skb, struct vxlan_dev *vxlan,
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if (send_ip && vxlan_nla_put_addr(skb, NDA_DST, &rdst->remote_ip))
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goto nla_put_failure;
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if (rdst->remote_port && rdst->remote_port != vxlan->dst_port &&
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if (rdst->remote_port && rdst->remote_port != vxlan->cfg.dst_port &&
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nla_put_be16(skb, NDA_PORT, rdst->remote_port))
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goto nla_put_failure;
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if (rdst->remote_vni != vxlan->default_dst.remote_vni &&
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@ -756,7 +713,8 @@ static int vxlan_fdb_create(struct vxlan_dev *vxlan,
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if (!(flags & NLM_F_CREATE))
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return -ENOENT;
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if (vxlan->addrmax && vxlan->addrcnt >= vxlan->addrmax)
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if (vxlan->cfg.addrmax &&
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vxlan->addrcnt >= vxlan->cfg.addrmax)
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return -ENOSPC;
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/* Disallow replace to add a multicast entry */
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@ -842,7 +800,7 @@ static int vxlan_fdb_parse(struct nlattr *tb[], struct vxlan_dev *vxlan,
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return -EINVAL;
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*port = nla_get_be16(tb[NDA_PORT]);
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} else {
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*port = vxlan->dst_port;
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*port = vxlan->cfg.dst_port;
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}
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if (tb[NDA_VNI]) {
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@ -1028,7 +986,7 @@ static bool vxlan_snoop(struct net_device *dev,
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vxlan_fdb_create(vxlan, src_mac, src_ip,
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NUD_REACHABLE,
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NLM_F_EXCL|NLM_F_CREATE,
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vxlan->dst_port,
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vxlan->cfg.dst_port,
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vxlan->default_dst.remote_vni,
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0, NTF_SELF);
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spin_unlock(&vxlan->hash_lock);
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@ -1957,7 +1915,7 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
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info = skb_tunnel_info(skb, AF_INET);
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if (rdst) {
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dst_port = rdst->remote_port ? rdst->remote_port : vxlan->dst_port;
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dst_port = rdst->remote_port ? rdst->remote_port : vxlan->cfg.dst_port;
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vni = rdst->remote_vni;
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dst = &rdst->remote_ip;
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} else {
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@ -1967,7 +1925,7 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
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goto drop;
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}
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dst_port = info->key.tp_dst ? : vxlan->dst_port;
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dst_port = info->key.tp_dst ? : vxlan->cfg.dst_port;
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vni = be64_to_cpu(info->key.tun_id);
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remote_ip.sin.sin_family = AF_INET;
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remote_ip.sin.sin_addr.s_addr = info->key.ipv4_dst;
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@ -1985,16 +1943,16 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
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old_iph = ip_hdr(skb);
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ttl = vxlan->ttl;
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ttl = vxlan->cfg.ttl;
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if (!ttl && vxlan_addr_multicast(dst))
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ttl = 1;
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tos = vxlan->tos;
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tos = vxlan->cfg.tos;
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if (tos == 1)
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tos = ip_tunnel_get_dsfield(old_iph, skb);
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src_port = udp_flow_src_port(dev_net(dev), skb, vxlan->port_min,
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vxlan->port_max, true);
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src_port = udp_flow_src_port(dev_net(dev), skb, vxlan->cfg.port_min,
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vxlan->cfg.port_max, true);
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if (dst->sa.sa_family == AF_INET) {
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if (info) {
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@ -2020,7 +1978,7 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
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fl4.flowi4_mark = skb->mark;
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fl4.flowi4_proto = IPPROTO_UDP;
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fl4.daddr = dst->sin.sin_addr.s_addr;
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fl4.saddr = vxlan->saddr.sin.sin_addr.s_addr;
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fl4.saddr = vxlan->cfg.saddr.sin.sin_addr.s_addr;
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rt = ip_route_output_key(vxlan->net, &fl4);
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if (IS_ERR(rt)) {
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@ -2076,7 +2034,7 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
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memset(&fl6, 0, sizeof(fl6));
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fl6.flowi6_oif = rdst ? rdst->remote_ifindex : 0;
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fl6.daddr = dst->sin6.sin6_addr;
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fl6.saddr = vxlan->saddr.sin6.sin6_addr;
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fl6.saddr = vxlan->cfg.saddr.sin6.sin6_addr;
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fl6.flowi6_mark = skb->mark;
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fl6.flowi6_proto = IPPROTO_UDP;
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@ -2247,7 +2205,7 @@ static void vxlan_cleanup(unsigned long arg)
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if (f->state & NUD_PERMANENT)
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continue;
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timeout = f->used + vxlan->age_interval * HZ;
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timeout = f->used + vxlan->cfg.age_interval * HZ;
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if (time_before_eq(timeout, jiffies)) {
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netdev_dbg(vxlan->dev,
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"garbage collect %pM\n",
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@ -2311,8 +2269,8 @@ static int vxlan_open(struct net_device *dev)
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struct vxlan_sock *vs;
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int ret = 0;
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vs = vxlan_sock_add(vxlan->net, vxlan->dst_port, vxlan_rcv, NULL,
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false, vxlan->flags);
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vs = vxlan_sock_add(vxlan->net, vxlan->cfg.dst_port, vxlan_rcv,
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NULL, vxlan->cfg.no_share, vxlan->flags);
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if (IS_ERR(vs))
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return PTR_ERR(vs);
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@ -2326,7 +2284,7 @@ static int vxlan_open(struct net_device *dev)
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}
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}
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if (vxlan->age_interval)
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if (vxlan->cfg.age_interval)
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mod_timer(&vxlan->age_timer, jiffies + FDB_AGE_INTERVAL);
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return ret;
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@ -2484,7 +2442,7 @@ static void vxlan_setup(struct net_device *dev)
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vxlan->age_timer.function = vxlan_cleanup;
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vxlan->age_timer.data = (unsigned long) vxlan;
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vxlan->dst_port = htons(vxlan_port);
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vxlan->cfg.dst_port = htons(vxlan_port);
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vxlan->dev = dev;
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@ -2684,54 +2642,35 @@ struct vxlan_sock *vxlan_sock_add(struct net *net, __be16 port,
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}
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EXPORT_SYMBOL_GPL(vxlan_sock_add);
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static int vxlan_newlink(struct net *src_net, struct net_device *dev,
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struct nlattr *tb[], struct nlattr *data[])
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static int vxlan_dev_configure(struct net *src_net, struct net_device *dev,
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struct vxlan_config *conf)
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{
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struct vxlan_net *vn = net_generic(src_net, vxlan_net_id);
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struct vxlan_dev *vxlan = netdev_priv(dev);
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struct vxlan_rdst *dst = &vxlan->default_dst;
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__u32 vni;
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int err;
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bool use_ipv6 = false;
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if (!data[IFLA_VXLAN_ID])
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return -EINVAL;
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__be16 default_port = vxlan->cfg.dst_port;
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vxlan->net = src_net;
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vni = nla_get_u32(data[IFLA_VXLAN_ID]);
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dst->remote_vni = vni;
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dst->remote_vni = conf->vni;
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memcpy(&dst->remote_ip, &conf->remote_ip, sizeof(conf->remote_ip));
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/* Unless IPv6 is explicitly requested, assume IPv4 */
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dst->remote_ip.sa.sa_family = AF_INET;
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if (data[IFLA_VXLAN_GROUP]) {
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dst->remote_ip.sin.sin_addr.s_addr = nla_get_in_addr(data[IFLA_VXLAN_GROUP]);
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} else if (data[IFLA_VXLAN_GROUP6]) {
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if (!IS_ENABLED(CONFIG_IPV6))
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return -EPFNOSUPPORT;
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if (!dst->remote_ip.sa.sa_family)
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dst->remote_ip.sa.sa_family = AF_INET;
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dst->remote_ip.sin6.sin6_addr = nla_get_in6_addr(data[IFLA_VXLAN_GROUP6]);
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dst->remote_ip.sa.sa_family = AF_INET6;
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if (dst->remote_ip.sa.sa_family == AF_INET6 ||
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vxlan->cfg.saddr.sa.sa_family == AF_INET6)
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use_ipv6 = true;
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}
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if (data[IFLA_VXLAN_LOCAL]) {
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vxlan->saddr.sin.sin_addr.s_addr = nla_get_in_addr(data[IFLA_VXLAN_LOCAL]);
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vxlan->saddr.sa.sa_family = AF_INET;
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} else if (data[IFLA_VXLAN_LOCAL6]) {
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if (!IS_ENABLED(CONFIG_IPV6))
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return -EPFNOSUPPORT;
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/* TODO: respect scope id */
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vxlan->saddr.sin6.sin6_addr = nla_get_in6_addr(data[IFLA_VXLAN_LOCAL6]);
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vxlan->saddr.sa.sa_family = AF_INET6;
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use_ipv6 = true;
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}
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if (data[IFLA_VXLAN_LINK] &&
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(dst->remote_ifindex = nla_get_u32(data[IFLA_VXLAN_LINK]))) {
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if (conf->remote_ifindex) {
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struct net_device *lowerdev
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= __dev_get_by_index(src_net, dst->remote_ifindex);
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= __dev_get_by_index(src_net, conf->remote_ifindex);
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dst->remote_ifindex = conf->remote_ifindex;
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if (!lowerdev) {
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pr_info("ifindex %d does not exist\n", dst->remote_ifindex);
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@ -2749,7 +2688,7 @@ static int vxlan_newlink(struct net *src_net, struct net_device *dev,
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}
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#endif
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if (!tb[IFLA_MTU])
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if (!conf->mtu)
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dev->mtu = lowerdev->mtu - (use_ipv6 ? VXLAN6_HEADROOM : VXLAN_HEADROOM);
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dev->needed_headroom = lowerdev->hard_header_len +
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@ -2757,79 +2696,17 @@ static int vxlan_newlink(struct net *src_net, struct net_device *dev,
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} else if (use_ipv6)
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vxlan->flags |= VXLAN_F_IPV6;
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if (data[IFLA_VXLAN_TOS])
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vxlan->tos = nla_get_u8(data[IFLA_VXLAN_TOS]);
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memcpy(&vxlan->cfg, conf, sizeof(*conf));
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if (!vxlan->cfg.dst_port)
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vxlan->cfg.dst_port = default_port;
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vxlan->flags |= conf->flags;
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if (data[IFLA_VXLAN_TTL])
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vxlan->ttl = nla_get_u8(data[IFLA_VXLAN_TTL]);
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if (!vxlan->cfg.age_interval)
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vxlan->cfg.age_interval = FDB_AGE_DEFAULT;
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if (!data[IFLA_VXLAN_LEARNING] || nla_get_u8(data[IFLA_VXLAN_LEARNING]))
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vxlan->flags |= VXLAN_F_LEARN;
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if (data[IFLA_VXLAN_AGEING])
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vxlan->age_interval = nla_get_u32(data[IFLA_VXLAN_AGEING]);
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else
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vxlan->age_interval = FDB_AGE_DEFAULT;
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if (data[IFLA_VXLAN_PROXY] && nla_get_u8(data[IFLA_VXLAN_PROXY]))
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vxlan->flags |= VXLAN_F_PROXY;
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if (data[IFLA_VXLAN_RSC] && nla_get_u8(data[IFLA_VXLAN_RSC]))
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vxlan->flags |= VXLAN_F_RSC;
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if (data[IFLA_VXLAN_L2MISS] && nla_get_u8(data[IFLA_VXLAN_L2MISS]))
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vxlan->flags |= VXLAN_F_L2MISS;
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if (data[IFLA_VXLAN_L3MISS] && nla_get_u8(data[IFLA_VXLAN_L3MISS]))
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vxlan->flags |= VXLAN_F_L3MISS;
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if (data[IFLA_VXLAN_LIMIT])
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vxlan->addrmax = nla_get_u32(data[IFLA_VXLAN_LIMIT]);
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if (data[IFLA_VXLAN_FLOWBASED] &&
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nla_get_u8(data[IFLA_VXLAN_FLOWBASED]))
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vxlan->flags |= VXLAN_F_FLOW_BASED;
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if (data[IFLA_VXLAN_PORT_RANGE]) {
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const struct ifla_vxlan_port_range *p
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= nla_data(data[IFLA_VXLAN_PORT_RANGE]);
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vxlan->port_min = ntohs(p->low);
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vxlan->port_max = ntohs(p->high);
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}
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if (data[IFLA_VXLAN_PORT])
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vxlan->dst_port = nla_get_be16(data[IFLA_VXLAN_PORT]);
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if (data[IFLA_VXLAN_UDP_CSUM] && nla_get_u8(data[IFLA_VXLAN_UDP_CSUM]))
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vxlan->flags |= VXLAN_F_UDP_CSUM;
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if (data[IFLA_VXLAN_UDP_ZERO_CSUM6_TX] &&
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nla_get_u8(data[IFLA_VXLAN_UDP_ZERO_CSUM6_TX]))
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vxlan->flags |= VXLAN_F_UDP_ZERO_CSUM6_TX;
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if (data[IFLA_VXLAN_UDP_ZERO_CSUM6_RX] &&
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nla_get_u8(data[IFLA_VXLAN_UDP_ZERO_CSUM6_RX]))
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vxlan->flags |= VXLAN_F_UDP_ZERO_CSUM6_RX;
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if (data[IFLA_VXLAN_REMCSUM_TX] &&
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nla_get_u8(data[IFLA_VXLAN_REMCSUM_TX]))
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vxlan->flags |= VXLAN_F_REMCSUM_TX;
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if (data[IFLA_VXLAN_REMCSUM_RX] &&
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nla_get_u8(data[IFLA_VXLAN_REMCSUM_RX]))
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vxlan->flags |= VXLAN_F_REMCSUM_RX;
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if (data[IFLA_VXLAN_GBP])
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vxlan->flags |= VXLAN_F_GBP;
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if (data[IFLA_VXLAN_REMCSUM_NOPARTIAL])
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vxlan->flags |= VXLAN_F_REMCSUM_NOPARTIAL;
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if (vxlan_find_vni(src_net, vni, use_ipv6 ? AF_INET6 : AF_INET,
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vxlan->dst_port, vxlan->flags)) {
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pr_info("duplicate VNI %u\n", vni);
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if (vxlan_find_vni(src_net, conf->vni, use_ipv6 ? AF_INET6 : AF_INET,
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vxlan->cfg.dst_port, vxlan->flags))
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return -EEXIST;
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}
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dev->ethtool_ops = &vxlan_ethtool_ops;
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@ -2839,7 +2716,7 @@ static int vxlan_newlink(struct net *src_net, struct net_device *dev,
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&vxlan->default_dst.remote_ip,
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NUD_REACHABLE|NUD_PERMANENT,
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NLM_F_EXCL|NLM_F_CREATE,
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vxlan->dst_port,
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vxlan->cfg.dst_port,
|
||||
vxlan->default_dst.remote_vni,
|
||||
vxlan->default_dst.remote_ifindex,
|
||||
NTF_SELF);
|
||||
@ -2858,6 +2735,151 @@ static int vxlan_newlink(struct net *src_net, struct net_device *dev,
|
||||
return 0;
|
||||
}
|
||||
|
||||
struct net_device *vxlan_dev_create(struct net *net, const char *name,
|
||||
u8 name_assign_type, struct vxlan_config *conf)
|
||||
{
|
||||
struct nlattr *tb[IFLA_MAX+1];
|
||||
struct net_device *dev;
|
||||
int err;
|
||||
|
||||
memset(&tb, 0, sizeof(tb));
|
||||
|
||||
dev = rtnl_create_link(net, name, name_assign_type,
|
||||
&vxlan_link_ops, tb);
|
||||
if (IS_ERR(dev))
|
||||
return dev;
|
||||
|
||||
err = vxlan_dev_configure(net, dev, conf);
|
||||
if (err < 0) {
|
||||
free_netdev(dev);
|
||||
return ERR_PTR(err);
|
||||
}
|
||||
|
||||
return dev;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(vxlan_dev_create);
|
||||
|
||||
static int vxlan_newlink(struct net *src_net, struct net_device *dev,
|
||||
struct nlattr *tb[], struct nlattr *data[])
|
||||
{
|
||||
struct vxlan_config conf;
|
||||
int err;
|
||||
|
||||
if (!data[IFLA_VXLAN_ID])
|
||||
return -EINVAL;
|
||||
|
||||
memset(&conf, 0, sizeof(conf));
|
||||
conf.vni = nla_get_u32(data[IFLA_VXLAN_ID]);
|
||||
|
||||
if (data[IFLA_VXLAN_GROUP]) {
|
||||
conf.remote_ip.sin.sin_addr.s_addr = nla_get_in_addr(data[IFLA_VXLAN_GROUP]);
|
||||
} else if (data[IFLA_VXLAN_GROUP6]) {
|
||||
if (!IS_ENABLED(CONFIG_IPV6))
|
||||
return -EPFNOSUPPORT;
|
||||
|
||||
conf.remote_ip.sin6.sin6_addr = nla_get_in6_addr(data[IFLA_VXLAN_GROUP6]);
|
||||
conf.remote_ip.sa.sa_family = AF_INET6;
|
||||
}
|
||||
|
||||
if (data[IFLA_VXLAN_LOCAL]) {
|
||||
conf.saddr.sin.sin_addr.s_addr = nla_get_in_addr(data[IFLA_VXLAN_LOCAL]);
|
||||
conf.saddr.sa.sa_family = AF_INET;
|
||||
} else if (data[IFLA_VXLAN_LOCAL6]) {
|
||||
if (!IS_ENABLED(CONFIG_IPV6))
|
||||
return -EPFNOSUPPORT;
|
||||
|
||||
/* TODO: respect scope id */
|
||||
conf.saddr.sin6.sin6_addr = nla_get_in6_addr(data[IFLA_VXLAN_LOCAL6]);
|
||||
conf.saddr.sa.sa_family = AF_INET6;
|
||||
}
|
||||
|
||||
if (data[IFLA_VXLAN_LINK])
|
||||
conf.remote_ifindex = nla_get_u32(data[IFLA_VXLAN_LINK]);
|
||||
|
||||
if (data[IFLA_VXLAN_TOS])
|
||||
conf.tos = nla_get_u8(data[IFLA_VXLAN_TOS]);
|
||||
|
||||
if (data[IFLA_VXLAN_TTL])
|
||||
conf.ttl = nla_get_u8(data[IFLA_VXLAN_TTL]);
|
||||
|
||||
if (!data[IFLA_VXLAN_LEARNING] || nla_get_u8(data[IFLA_VXLAN_LEARNING]))
|
||||
conf.flags |= VXLAN_F_LEARN;
|
||||
|
||||
if (data[IFLA_VXLAN_AGEING])
|
||||
conf.age_interval = nla_get_u32(data[IFLA_VXLAN_AGEING]);
|
||||
|
||||
if (data[IFLA_VXLAN_PROXY] && nla_get_u8(data[IFLA_VXLAN_PROXY]))
|
||||
conf.flags |= VXLAN_F_PROXY;
|
||||
|
||||
if (data[IFLA_VXLAN_RSC] && nla_get_u8(data[IFLA_VXLAN_RSC]))
|
||||
conf.flags |= VXLAN_F_RSC;
|
||||
|
||||
if (data[IFLA_VXLAN_L2MISS] && nla_get_u8(data[IFLA_VXLAN_L2MISS]))
|
||||
conf.flags |= VXLAN_F_L2MISS;
|
||||
|
||||
if (data[IFLA_VXLAN_L3MISS] && nla_get_u8(data[IFLA_VXLAN_L3MISS]))
|
||||
conf.flags |= VXLAN_F_L3MISS;
|
||||
|
||||
if (data[IFLA_VXLAN_LIMIT])
|
||||
conf.addrmax = nla_get_u32(data[IFLA_VXLAN_LIMIT]);
|
||||
|
||||
if (data[IFLA_VXLAN_FLOWBASED] &&
|
||||
nla_get_u8(data[IFLA_VXLAN_FLOWBASED]))
|
||||
conf.flags |= VXLAN_F_FLOW_BASED;
|
||||
|
||||
if (data[IFLA_VXLAN_PORT_RANGE]) {
|
||||
const struct ifla_vxlan_port_range *p
|
||||
= nla_data(data[IFLA_VXLAN_PORT_RANGE]);
|
||||
conf.port_min = ntohs(p->low);
|
||||
conf.port_max = ntohs(p->high);
|
||||
}
|
||||
|
||||
if (data[IFLA_VXLAN_PORT])
|
||||
conf.dst_port = nla_get_be16(data[IFLA_VXLAN_PORT]);
|
||||
|
||||
if (data[IFLA_VXLAN_UDP_CSUM] && nla_get_u8(data[IFLA_VXLAN_UDP_CSUM]))
|
||||
conf.flags |= VXLAN_F_UDP_CSUM;
|
||||
|
||||
if (data[IFLA_VXLAN_UDP_ZERO_CSUM6_TX] &&
|
||||
nla_get_u8(data[IFLA_VXLAN_UDP_ZERO_CSUM6_TX]))
|
||||
conf.flags |= VXLAN_F_UDP_ZERO_CSUM6_TX;
|
||||
|
||||
if (data[IFLA_VXLAN_UDP_ZERO_CSUM6_RX] &&
|
||||
nla_get_u8(data[IFLA_VXLAN_UDP_ZERO_CSUM6_RX]))
|
||||
conf.flags |= VXLAN_F_UDP_ZERO_CSUM6_RX;
|
||||
|
||||
if (data[IFLA_VXLAN_REMCSUM_TX] &&
|
||||
nla_get_u8(data[IFLA_VXLAN_REMCSUM_TX]))
|
||||
conf.flags |= VXLAN_F_REMCSUM_TX;
|
||||
|
||||
if (data[IFLA_VXLAN_REMCSUM_RX] &&
|
||||
nla_get_u8(data[IFLA_VXLAN_REMCSUM_RX]))
|
||||
conf.flags |= VXLAN_F_REMCSUM_RX;
|
||||
|
||||
if (data[IFLA_VXLAN_GBP])
|
||||
conf.flags |= VXLAN_F_GBP;
|
||||
|
||||
if (data[IFLA_VXLAN_REMCSUM_NOPARTIAL])
|
||||
conf.flags |= VXLAN_F_REMCSUM_NOPARTIAL;
|
||||
|
||||
err = vxlan_dev_configure(src_net, dev, &conf);
|
||||
switch (err) {
|
||||
case -ENODEV:
|
||||
pr_info("ifindex %d does not exist\n", conf.remote_ifindex);
|
||||
break;
|
||||
|
||||
case -EPERM:
|
||||
pr_info("IPv6 is disabled via sysctl\n");
|
||||
break;
|
||||
|
||||
case -EEXIST:
|
||||
pr_info("duplicate VNI %u\n", conf.vni);
|
||||
break;
|
||||
}
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
static void vxlan_dellink(struct net_device *dev, struct list_head *head)
|
||||
{
|
||||
struct vxlan_dev *vxlan = netdev_priv(dev);
|
||||
@ -2904,8 +2926,8 @@ static int vxlan_fill_info(struct sk_buff *skb, const struct net_device *dev)
|
||||
const struct vxlan_dev *vxlan = netdev_priv(dev);
|
||||
const struct vxlan_rdst *dst = &vxlan->default_dst;
|
||||
struct ifla_vxlan_port_range ports = {
|
||||
.low = htons(vxlan->port_min),
|
||||
.high = htons(vxlan->port_max),
|
||||
.low = htons(vxlan->cfg.port_min),
|
||||
.high = htons(vxlan->cfg.port_max),
|
||||
};
|
||||
|
||||
if (nla_put_u32(skb, IFLA_VXLAN_ID, dst->remote_vni))
|
||||
@ -2928,22 +2950,22 @@ static int vxlan_fill_info(struct sk_buff *skb, const struct net_device *dev)
|
||||
if (dst->remote_ifindex && nla_put_u32(skb, IFLA_VXLAN_LINK, dst->remote_ifindex))
|
||||
goto nla_put_failure;
|
||||
|
||||
if (!vxlan_addr_any(&vxlan->saddr)) {
|
||||
if (vxlan->saddr.sa.sa_family == AF_INET) {
|
||||
if (!vxlan_addr_any(&vxlan->cfg.saddr)) {
|
||||
if (vxlan->cfg.saddr.sa.sa_family == AF_INET) {
|
||||
if (nla_put_in_addr(skb, IFLA_VXLAN_LOCAL,
|
||||
vxlan->saddr.sin.sin_addr.s_addr))
|
||||
vxlan->cfg.saddr.sin.sin_addr.s_addr))
|
||||
goto nla_put_failure;
|
||||
#if IS_ENABLED(CONFIG_IPV6)
|
||||
} else {
|
||||
if (nla_put_in6_addr(skb, IFLA_VXLAN_LOCAL6,
|
||||
&vxlan->saddr.sin6.sin6_addr))
|
||||
&vxlan->cfg.saddr.sin6.sin6_addr))
|
||||
goto nla_put_failure;
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
if (nla_put_u8(skb, IFLA_VXLAN_TTL, vxlan->ttl) ||
|
||||
nla_put_u8(skb, IFLA_VXLAN_TOS, vxlan->tos) ||
|
||||
if (nla_put_u8(skb, IFLA_VXLAN_TTL, vxlan->cfg.ttl) ||
|
||||
nla_put_u8(skb, IFLA_VXLAN_TOS, vxlan->cfg.tos) ||
|
||||
nla_put_u8(skb, IFLA_VXLAN_LEARNING,
|
||||
!!(vxlan->flags & VXLAN_F_LEARN)) ||
|
||||
nla_put_u8(skb, IFLA_VXLAN_PROXY,
|
||||
@ -2955,9 +2977,9 @@ static int vxlan_fill_info(struct sk_buff *skb, const struct net_device *dev)
|
||||
!!(vxlan->flags & VXLAN_F_L3MISS)) ||
|
||||
nla_put_u8(skb, IFLA_VXLAN_FLOWBASED,
|
||||
!!(vxlan->flags & VXLAN_F_FLOW_BASED)) ||
|
||||
nla_put_u32(skb, IFLA_VXLAN_AGEING, vxlan->age_interval) ||
|
||||
nla_put_u32(skb, IFLA_VXLAN_LIMIT, vxlan->addrmax) ||
|
||||
nla_put_be16(skb, IFLA_VXLAN_PORT, vxlan->dst_port) ||
|
||||
nla_put_u32(skb, IFLA_VXLAN_AGEING, vxlan->cfg.age_interval) ||
|
||||
nla_put_u32(skb, IFLA_VXLAN_LIMIT, vxlan->cfg.addrmax) ||
|
||||
nla_put_be16(skb, IFLA_VXLAN_PORT, vxlan->cfg.dst_port) ||
|
||||
nla_put_u8(skb, IFLA_VXLAN_UDP_CSUM,
|
||||
!!(vxlan->flags & VXLAN_F_UDP_CSUM)) ||
|
||||
nla_put_u8(skb, IFLA_VXLAN_UDP_ZERO_CSUM6_TX,
|
||||
|
||||
@ -95,6 +95,11 @@ struct vxlanhdr {
|
||||
#define VXLAN_VNI_MASK (VXLAN_VID_MASK << 8)
|
||||
#define VXLAN_HLEN (sizeof(struct udphdr) + sizeof(struct vxlanhdr))
|
||||
|
||||
#define VNI_HASH_BITS 10
|
||||
#define VNI_HASH_SIZE (1<<VNI_HASH_BITS)
|
||||
#define FDB_HASH_BITS 8
|
||||
#define FDB_HASH_SIZE (1<<FDB_HASH_BITS)
|
||||
|
||||
struct vxlan_metadata {
|
||||
__be32 vni;
|
||||
u32 gbp;
|
||||
@ -121,6 +126,57 @@ struct vxlan_sock {
|
||||
u32 flags;
|
||||
};
|
||||
|
||||
union vxlan_addr {
|
||||
struct sockaddr_in sin;
|
||||
struct sockaddr_in6 sin6;
|
||||
struct sockaddr sa;
|
||||
};
|
||||
|
||||
struct vxlan_rdst {
|
||||
union vxlan_addr remote_ip;
|
||||
__be16 remote_port;
|
||||
u32 remote_vni;
|
||||
u32 remote_ifindex;
|
||||
struct list_head list;
|
||||
struct rcu_head rcu;
|
||||
};
|
||||
|
||||
struct vxlan_config {
|
||||
union vxlan_addr remote_ip;
|
||||
union vxlan_addr saddr;
|
||||
u32 vni;
|
||||
int remote_ifindex;
|
||||
int mtu;
|
||||
__be16 dst_port;
|
||||
__u16 port_min;
|
||||
__u16 port_max;
|
||||
__u8 tos;
|
||||
__u8 ttl;
|
||||
u32 flags;
|
||||
unsigned long age_interval;
|
||||
unsigned int addrmax;
|
||||
bool no_share;
|
||||
};
|
||||
|
||||
/* Pseudo network device */
|
||||
struct vxlan_dev {
|
||||
struct hlist_node hlist; /* vni hash table */
|
||||
struct list_head next; /* vxlan's per namespace list */
|
||||
struct vxlan_sock *vn_sock; /* listening socket */
|
||||
struct net_device *dev;
|
||||
struct net *net; /* netns for packet i/o */
|
||||
struct vxlan_rdst default_dst; /* default destination */
|
||||
u32 flags; /* VXLAN_F_* in vxlan.h */
|
||||
|
||||
struct timer_list age_timer;
|
||||
spinlock_t hash_lock;
|
||||
unsigned int addrcnt;
|
||||
|
||||
struct vxlan_config cfg;
|
||||
|
||||
struct hlist_head fdb_head[FDB_HASH_SIZE];
|
||||
};
|
||||
|
||||
#define VXLAN_F_LEARN 0x01
|
||||
#define VXLAN_F_PROXY 0x02
|
||||
#define VXLAN_F_RSC 0x04
|
||||
@ -151,6 +207,9 @@ struct vxlan_sock *vxlan_sock_add(struct net *net, __be16 port,
|
||||
vxlan_rcv_t *rcv, void *data,
|
||||
bool no_share, u32 flags);
|
||||
|
||||
struct net_device *vxlan_dev_create(struct net *net, const char *name,
|
||||
u8 name_assign_type, struct vxlan_config *conf);
|
||||
|
||||
void vxlan_sock_release(struct vxlan_sock *vs);
|
||||
|
||||
int vxlan_xmit_skb(struct rtable *rt, struct sock *sk, struct sk_buff *skb,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user