Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 246 insertions, 0 deletions

diff --git a/drivers/net/vxlan/vxlan_private.h b/drivers/net/vxlan/vxlan_private.h
new file mode 100644
index 0000000000..817fa30758
--- /dev/null
+++ b/drivers/net/vxlan/vxlan_private.h
@@ -0,0 +1,246 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ *	Vxlan private header file
+ *
+ */
+
+#ifndef _VXLAN_PRIVATE_H
+#define _VXLAN_PRIVATE_H
+
+#include <linux/rhashtable.h>
+
+extern unsigned int vxlan_net_id;
+extern const u8 all_zeros_mac[ETH_ALEN + 2];
+extern const struct rhashtable_params vxlan_vni_rht_params;
+
+#define PORT_HASH_BITS	8
+#define PORT_HASH_SIZE  (1 << PORT_HASH_BITS)
+
+/* per-network namespace private data for this module */
+struct vxlan_net {
+	struct list_head  vxlan_list;
+	struct hlist_head sock_list[PORT_HASH_SIZE];
+	spinlock_t	  sock_lock;
+	struct notifier_block nexthop_notifier_block;
+};
+
+/* Forwarding table entry */
+struct vxlan_fdb {
+	struct hlist_node hlist;	/* linked list of entries */
+	struct rcu_head	  rcu;
+	unsigned long	  updated;	/* jiffies */
+	unsigned long	  used;
+	struct list_head  remotes;
+	u8		  eth_addr[ETH_ALEN];
+	u16		  state;	/* see ndm_state */
+	__be32		  vni;
+	u16		  flags;	/* see ndm_flags and below */
+	struct list_head  nh_list;
+	struct nexthop __rcu *nh;
+	struct vxlan_dev  __rcu *vdev;
+};
+
+#define NTF_VXLAN_ADDED_BY_USER 0x100
+
+/* Virtual Network hash table head */
+static inline struct hlist_head *vni_head(struct vxlan_sock *vs, __be32 vni)
+{
+	return &vs->vni_list[hash_32((__force u32)vni, VNI_HASH_BITS)];
+}
+
+/* Socket hash table head */
+static inline struct hlist_head *vs_head(struct net *net, __be16 port)
+{
+	struct vxlan_net *vn = net_generic(net, vxlan_net_id);
+
+	return &vn->sock_list[hash_32(ntohs(port), PORT_HASH_BITS)];
+}
+
+/* First remote destination for a forwarding entry.
+ * Guaranteed to be non-NULL because remotes are never deleted.
+ */
+static inline struct vxlan_rdst *first_remote_rcu(struct vxlan_fdb *fdb)
+{
+	if (rcu_access_pointer(fdb->nh))
+		return NULL;
+	return list_entry_rcu(fdb->remotes.next, struct vxlan_rdst, list);
+}
+
+static inline struct vxlan_rdst *first_remote_rtnl(struct vxlan_fdb *fdb)
+{
+	if (rcu_access_pointer(fdb->nh))
+		return NULL;
+	return list_first_entry(&fdb->remotes, struct vxlan_rdst, list);
+}
+
+#if IS_ENABLED(CONFIG_IPV6)
+static inline
+bool vxlan_addr_equal(const union vxlan_addr *a, const union vxlan_addr *b)
+{
+	if (a->sa.sa_family != b->sa.sa_family)
+		return false;
+	if (a->sa.sa_family == AF_INET6)
+		return ipv6_addr_equal(&a->sin6.sin6_addr, &b->sin6.sin6_addr);
+	else
+		return a->sin.sin_addr.s_addr == b->sin.sin_addr.s_addr;
+}
+
+static inline int vxlan_nla_get_addr(union vxlan_addr *ip,
+				     const struct nlattr *nla)
+{
+	if (nla_len(nla) >= sizeof(struct in6_addr)) {
+		ip->sin6.sin6_addr = nla_get_in6_addr(nla);
+		ip->sa.sa_family = AF_INET6;
+		return 0;
+	} else if (nla_len(nla) >= sizeof(__be32)) {
+		ip->sin.sin_addr.s_addr = nla_get_in_addr(nla);
+		ip->sa.sa_family = AF_INET;
+		return 0;
+	} else {
+		return -EAFNOSUPPORT;
+	}
+}
+
+static inline int vxlan_nla_put_addr(struct sk_buff *skb, int attr,
+				     const union vxlan_addr *ip)
+{
+	if (ip->sa.sa_family == AF_INET6)
+		return nla_put_in6_addr(skb, attr, &ip->sin6.sin6_addr);
+	else
+		return nla_put_in_addr(skb, attr, ip->sin.sin_addr.s_addr);
+}
+
+static inline bool vxlan_addr_is_multicast(const union vxlan_addr *ip)
+{
+	if (ip->sa.sa_family == AF_INET6)
+		return ipv6_addr_is_multicast(&ip->sin6.sin6_addr);
+	else
+		return ipv4_is_multicast(ip->sin.sin_addr.s_addr);
+}
+
+#else /* !CONFIG_IPV6 */
+
+static inline
+bool vxlan_addr_equal(const union vxlan_addr *a, const union vxlan_addr *b)
+{
+	return a->sin.sin_addr.s_addr == b->sin.sin_addr.s_addr;
+}
+
+static inline int vxlan_nla_get_addr(union vxlan_addr *ip,
+				     const struct nlattr *nla)
+{
+	if (nla_len(nla) >= sizeof(struct in6_addr)) {
+		return -EAFNOSUPPORT;
+	} else if (nla_len(nla) >= sizeof(__be32)) {
+		ip->sin.sin_addr.s_addr = nla_get_in_addr(nla);
+		ip->sa.sa_family = AF_INET;
+		return 0;
+	} else {
+		return -EAFNOSUPPORT;
+	}
+}
+
+static inline int vxlan_nla_put_addr(struct sk_buff *skb, int attr,
+				     const union vxlan_addr *ip)
+{
+	return nla_put_in_addr(skb, attr, ip->sin.sin_addr.s_addr);
+}
+
+static inline bool vxlan_addr_is_multicast(const union vxlan_addr *ip)
+{
+	return ipv4_is_multicast(ip->sin.sin_addr.s_addr);
+}
+
+#endif
+
+static inline size_t vxlan_addr_size(const union vxlan_addr *ip)
+{
+	if (ip->sa.sa_family == AF_INET6)
+		return sizeof(struct in6_addr);
+	else
+		return sizeof(__be32);
+}
+
+static inline struct vxlan_vni_node *
+vxlan_vnifilter_lookup(struct vxlan_dev *vxlan, __be32 vni)
+{
+	struct vxlan_vni_group *vg;
+
+	vg = rcu_dereference_rtnl(vxlan->vnigrp);
+	if (!vg)
+		return NULL;
+
+	return rhashtable_lookup_fast(&vg->vni_hash, &vni,
+				      vxlan_vni_rht_params);
+}
+
+/* vxlan_core.c */
+int vxlan_fdb_create(struct vxlan_dev *vxlan,
+		     const u8 *mac, union vxlan_addr *ip,
+		     __u16 state, __be16 port, __be32 src_vni,
+		     __be32 vni, __u32 ifindex, __u16 ndm_flags,
+		     u32 nhid, struct vxlan_fdb **fdb,
+		     struct netlink_ext_ack *extack);
+int __vxlan_fdb_delete(struct vxlan_dev *vxlan,
+		       const unsigned char *addr, union vxlan_addr ip,
+		       __be16 port, __be32 src_vni, __be32 vni,
+		       u32 ifindex, bool swdev_notify);
+u32 eth_vni_hash(const unsigned char *addr, __be32 vni);
+u32 fdb_head_index(struct vxlan_dev *vxlan, const u8 *mac, __be32 vni);
+int vxlan_fdb_update(struct vxlan_dev *vxlan,
+		     const u8 *mac, union vxlan_addr *ip,
+		     __u16 state, __u16 flags,
+		     __be16 port, __be32 src_vni, __be32 vni,
+		     __u32 ifindex, __u16 ndm_flags, u32 nhid,
+		     bool swdev_notify, struct netlink_ext_ack *extack);
+void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
+		    __be32 default_vni, struct vxlan_rdst *rdst, bool did_rsc);
+int vxlan_vni_in_use(struct net *src_net, struct vxlan_dev *vxlan,
+		     struct vxlan_config *conf, __be32 vni);
+
+/* vxlan_vnifilter.c */
+int vxlan_vnigroup_init(struct vxlan_dev *vxlan);
+void vxlan_vnigroup_uninit(struct vxlan_dev *vxlan);
+
+void vxlan_vnifilter_init(void);
+void vxlan_vnifilter_uninit(void);
+void vxlan_vnifilter_count(struct vxlan_dev *vxlan, __be32 vni,
+			   struct vxlan_vni_node *vninode,
+			   int type, unsigned int len);
+
+void vxlan_vs_add_vnigrp(struct vxlan_dev *vxlan,
+			 struct vxlan_sock *vs,
+			 bool ipv6);
+void vxlan_vs_del_vnigrp(struct vxlan_dev *vxlan);
+int vxlan_vnilist_update_group(struct vxlan_dev *vxlan,
+			       union vxlan_addr *old_remote_ip,
+			       union vxlan_addr *new_remote_ip,
+			       struct netlink_ext_ack *extack);
+
+
+/* vxlan_multicast.c */
+int vxlan_multicast_join(struct vxlan_dev *vxlan);
+int vxlan_multicast_leave(struct vxlan_dev *vxlan);
+bool vxlan_group_used(struct vxlan_net *vn, struct vxlan_dev *dev,
+		      __be32 vni, union vxlan_addr *rip, int rifindex);
+int vxlan_igmp_join(struct vxlan_dev *vxlan, union vxlan_addr *rip,
+		    int rifindex);
+int vxlan_igmp_leave(struct vxlan_dev *vxlan, union vxlan_addr *rip,
+		     int rifindex);
+
+/* vxlan_mdb.c */
+int vxlan_mdb_dump(struct net_device *dev, struct sk_buff *skb,
+		   struct netlink_callback *cb);
+int vxlan_mdb_add(struct net_device *dev, struct nlattr *tb[], u16 nlmsg_flags,
+		  struct netlink_ext_ack *extack);
+int vxlan_mdb_del(struct net_device *dev, struct nlattr *tb[],
+		  struct netlink_ext_ack *extack);
+struct vxlan_mdb_entry *vxlan_mdb_entry_skb_get(struct vxlan_dev *vxlan,
+						struct sk_buff *skb,
+						__be32 src_vni);
+netdev_tx_t vxlan_mdb_xmit(struct vxlan_dev *vxlan,
+			   const struct vxlan_mdb_entry *mdb_entry,
+			   struct sk_buff *skb);
+int vxlan_mdb_init(struct vxlan_dev *vxlan);
+void vxlan_mdb_fini(struct vxlan_dev *vxlan);
+#endif