summaryrefslogtreecommitdiffstats
path: root/drivers/net/vxlan/vxlan_private.h
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/net/vxlan/vxlan_private.h
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/net/vxlan/vxlan_private.h')
-rw-r--r--drivers/net/vxlan/vxlan_private.h246
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