#ifndef __NET_VXLAN_WRAPPER_H
-#define __NET_VXLAN_WRAPPER_H 1
+#define __NET_VXLAN_WRAPPER_H 1
-#include <linux/skbuff.h>
-#include <linux/netdevice.h>
-#include <linux/udp.h>
-#include <net/gre.h>
-
-#include <linux/version.h>
+#ifdef CONFIG_INET
+#include <net/udp_tunnel.h>
+#endif
-#ifdef HAVE_VXLAN_METADATA
-#define USE_UPSTREAM_VXLAN
+#ifdef HAVE_METADATA_DST
#include_next <net/vxlan.h>
-#endif
-#ifndef VXLAN_HLEN
-/* VXLAN header flags. */
-#define VXLAN_HF_VNI 0x08000000
-#ifndef VXLAN_HF_GBP
-#define VXLAN_HF_GBP 0x80000000
-#endif
+static inline int rpl_vxlan_init_module(void)
+{
+ return 0;
+}
+static inline void rpl_vxlan_cleanup_module(void)
+{}
-#define VXLAN_N_VID (1u << 24)
-#define VXLAN_VID_MASK (VXLAN_N_VID - 1)
-#define VXLAN_HLEN (sizeof(struct udphdr) + sizeof(struct vxlanhdr))
-#endif
+#define vxlan_xmit dev_queue_xmit
+
+#else
+
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <linux/if_vlan.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/udp.h>
+#include <net/dst_metadata.h>
+
+#include "compat.h"
+#include "gso.h"
+
+#define VNI_HASH_BITS 10
+#define VNI_HASH_SIZE (1<<VNI_HASH_BITS)
-#ifndef VXLAN_GBP_USED_BITS
/*
* VXLAN Group Based Policy Extension:
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
__be16 policy_id;
__be32 vx_vni;
};
+
#define VXLAN_GBP_USED_BITS (VXLAN_HF_GBP | 0xFFFFFF)
/* skb->mark mapping
#define VXLAN_GBP_POLICY_APPLIED (BIT(3) << 16)
#define VXLAN_GBP_ID_MASK (0xFFFF)
-#define VXLAN_F_GBP 0x800
-#endif
-
-#ifndef VXLAN_F_UDP_CSUM
-#define VXLAN_F_UDP_CSUM 0x40
-#endif
-
-#ifndef VXLAN_F_RCV_FLAGS
-#define VXLAN_F_RCV_FLAGS VXLAN_F_GBP
-#endif
+/* VXLAN protocol header:
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |G|R|R|R|I|R|R|C| Reserved |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | VXLAN Network Identifier (VNI) | Reserved |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *
+ * G = 1 Group Policy (VXLAN-GBP)
+ * I = 1 VXLAN Network Identifier (VNI) present
+ * C = 1 Remote checksum offload (RCO)
+ */
+struct vxlanhdr {
+ __be32 vx_flags;
+ __be32 vx_vni;
+};
-#ifdef USE_UPSTREAM_VXLAN
-static inline int rpl_vxlan_xmit_skb(struct rtable *rt, struct sock *sk,
- struct sk_buff *skb, __be32 src, __be32 dst, __u8 tos,
- __u8 ttl, __be16 df, __be16 src_port, __be16 dst_port,
- struct vxlan_metadata *md, bool xnet, u32 vxflags)
-{
- if (skb_is_gso(skb) && skb_is_encapsulated(skb)) {
- kfree_skb(skb);
- return -ENOSYS;
- }
+/* VXLAN header flags. */
+#define VXLAN_HF_RCO BIT(24)
+#define VXLAN_HF_VNI BIT(27)
+#define VXLAN_HF_GBP BIT(31)
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4,1,0)
- return vxlan_xmit_skb(rt, skb, src, dst, tos, ttl, df,
-#else
- return vxlan_xmit_skb(rt, sk, skb, src, dst, tos, ttl, df,
-#endif
- src_port, dst_port, md, xnet, vxflags);
-}
+/* Remote checksum offload header option */
+#define VXLAN_RCO_MASK 0x7f /* Last byte of vni field */
+#define VXLAN_RCO_UDP 0x80 /* Indicate UDP RCO (TCP when not set *) */
+#define VXLAN_RCO_SHIFT 1 /* Left shift of start */
+#define VXLAN_RCO_SHIFT_MASK ((1 << VXLAN_RCO_SHIFT) - 1)
+#define VXLAN_MAX_REMCSUM_START (VXLAN_RCO_MASK << VXLAN_RCO_SHIFT)
-#define vxlan_xmit_skb rpl_vxlan_xmit_skb
-#else /* USE_UPSTREAM_VXLAN */
+#define VXLAN_N_VID (1u << 24)
+#define VXLAN_VID_MASK (VXLAN_N_VID - 1)
+#define VXLAN_VNI_MASK (VXLAN_VID_MASK << 8)
+#define VXLAN_HLEN (sizeof(struct udphdr) + sizeof(struct vxlanhdr))
struct vxlan_metadata {
- __be32 vni;
- u32 gbp;
+ __be32 vni;
+ u32 gbp;
};
-#define vxlan_sock rpl_vxlan_sock
-struct rpl_vxlan_sock;
-
-#define vxlan_rcv_t rpl_vxlan_rcv_t
-typedef void (vxlan_rcv_t)(struct vxlan_sock *vh, struct sk_buff *skb,
- struct vxlan_metadata *md);
+#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)
/* per UDP socket information */
struct vxlan_sock {
struct hlist_node hlist;
- vxlan_rcv_t *rcv;
- void *data;
struct work_struct del_work;
struct socket *sock;
struct rcu_head rcu;
+ struct hlist_head vni_list[VNI_HASH_SIZE];
+ atomic_t refcnt;
+#ifdef HAVE_UDP_OFFLOAD
+ struct udp_offload udp_offloads;
+#endif
u32 flags;
};
-#define vxlan_sock_add rpl_vxlan_sock_add
-struct vxlan_sock *rpl_vxlan_sock_add(struct net *net, __be16 port,
- vxlan_rcv_t *rcv, void *data,
- bool no_share, 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;
-#define vxlan_sock_release rpl_vxlan_sock_release
-void rpl_vxlan_sock_release(struct vxlan_sock *vs);
+ 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
+#define VXLAN_F_L2MISS 0x08
+#define VXLAN_F_L3MISS 0x10
+#define VXLAN_F_IPV6 0x20
+#define VXLAN_F_UDP_CSUM 0x40
+#define VXLAN_F_UDP_ZERO_CSUM6_TX 0x80
+#define VXLAN_F_UDP_ZERO_CSUM6_RX 0x100
+#define VXLAN_F_REMCSUM_TX 0x200
+#define VXLAN_F_REMCSUM_RX 0x400
+#define VXLAN_F_GBP 0x800
+#define VXLAN_F_REMCSUM_NOPARTIAL 0x1000
+#define VXLAN_F_COLLECT_METADATA 0x2000
+
+/* Flags that are used in the receive path. These flags must match in
+ * order for a socket to be shareable
+ */
+#define VXLAN_F_RCV_FLAGS (VXLAN_F_GBP | \
+ VXLAN_F_UDP_ZERO_CSUM6_RX | \
+ VXLAN_F_REMCSUM_RX | \
+ VXLAN_F_REMCSUM_NOPARTIAL | \
+ VXLAN_F_COLLECT_METADATA)
+#define vxlan_dev_create rpl_vxlan_dev_create
+struct net_device *rpl_vxlan_dev_create(struct net *net, const char *name,
+ u8 name_assign_type, struct vxlan_config *conf);
+
+static inline __be16 vxlan_dev_dst_port(struct vxlan_dev *vxlan)
+{
+ return inet_sport(vxlan->vn_sock->sock->sk);
+}
+
+static inline netdev_features_t vxlan_features_check(struct sk_buff *skb,
+ netdev_features_t features)
+{
+ u8 l4_hdr = 0;
+
+ if (!skb_encapsulation(skb))
+ return features;
+
+ switch (vlan_get_protocol(skb)) {
+ case htons(ETH_P_IP):
+ l4_hdr = ip_hdr(skb)->protocol;
+ break;
+ case htons(ETH_P_IPV6):
+ l4_hdr = ipv6_hdr(skb)->nexthdr;
+ break;
+ default:
+ return features;
+ }
+
+ if ((l4_hdr == IPPROTO_UDP) && (
+#ifdef ENCAP_TYPE_ETHER
+ skb->inner_protocol_type != ENCAP_TYPE_ETHER ||
+#endif
+ ovs_skb_get_inner_protocol(skb) != htons(ETH_P_TEB) ||
+ (skb_inner_mac_header(skb) - skb_transport_header(skb) !=
+ sizeof(struct udphdr) + sizeof(struct vxlanhdr))))
+ return features & ~(NETIF_F_ALL_CSUM | NETIF_F_GSO_MASK);
+
+ return features;
+}
+
+/* IP header + UDP + VXLAN + Ethernet header */
+#define VXLAN_HEADROOM (20 + 8 + 8 + 14)
+/* IPv6 header + UDP + VXLAN + Ethernet header */
+#define VXLAN6_HEADROOM (40 + 8 + 8 + 14)
+
+static inline unsigned short vxlan_get_sk_family(struct vxlan_sock *vs)
+{
+ return vs->sock->sk->sk_family;
+}
+
+int rpl_vxlan_init_module(void);
+void rpl_vxlan_cleanup_module(void);
+
+#define vxlan_xmit rpl_vxlan_xmit
+netdev_tx_t rpl_vxlan_xmit(struct sk_buff *skb);
+#endif
-#define vxlan_xmit_skb rpl_vxlan_xmit_skb
-int rpl_vxlan_xmit_skb(struct rtable *rt, struct sock *sk, struct sk_buff *skb,
- __be32 src, __be32 dst, __u8 tos, __u8 ttl, __be16 df,
- __be16 src_port, __be16 dst_port,
- struct vxlan_metadata *md, bool xnet, u32 vxflags);
+#define vxlan_init_module rpl_vxlan_init_module
+#define vxlan_cleanup_module rpl_vxlan_cleanup_module
-#endif /* !HAVE_VXLAN_METADATA */
#endif
projects / cascardo / ovs.git / blobdiff