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https://github.com/openvswitch/ovs
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bedf02f45b
With the latest change of separating vports into their own modules, it is necessary to export all public functions in linux/compat/ directory. Also, we should prefix functions which replace the upstream ones with 'rpl_' and others with 'ovs_'. This will prevent the linker error when vport modules use those functions in the future. e.g., the to be merged vport-stt module will use the flex_array_* functions which are not currently exported. Co-authored-by: Tuan Nguyen <tuan.nguyen@veriksystems.com> Signed-off-by: Alex Wang <alexw@nicira.com> Acked-by: Jesse Gross <jesse@nicira.com>
149 lines
4.0 KiB
C
149 lines
4.0 KiB
C
#ifndef __NET_VXLAN_WRAPPER_H
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#define __NET_VXLAN_WRAPPER_H 1
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#include <linux/skbuff.h>
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#include <linux/netdevice.h>
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#include <linux/udp.h>
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#include <net/gre.h>
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#include <linux/version.h>
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#ifdef HAVE_VXLAN_METADATA
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#define USE_UPSTREAM_VXLAN
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#include_next <net/vxlan.h>
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#endif
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#ifndef VXLAN_HLEN
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/* VXLAN header flags. */
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#define VXLAN_HF_VNI 0x08000000
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#ifndef VXLAN_HF_GBP
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#define VXLAN_HF_GBP 0x80000000
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#endif
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#define VXLAN_N_VID (1u << 24)
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#define VXLAN_VID_MASK (VXLAN_N_VID - 1)
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#define VXLAN_HLEN (sizeof(struct udphdr) + sizeof(struct vxlanhdr))
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#endif
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#ifndef VXLAN_GBP_USED_BITS
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/*
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* VXLAN Group Based Policy Extension:
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* |1|-|-|-|1|-|-|-|R|D|R|R|A|R|R|R| Group Policy ID |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | VXLAN Network Identifier (VNI) | Reserved |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*
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* D = Don't Learn bit. When set, this bit indicates that the egress
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* VTEP MUST NOT learn the source address of the encapsulated frame.
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*
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* A = Indicates that the group policy has already been applied to
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* this packet. Policies MUST NOT be applied by devices when the
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* A bit is set.
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*
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* [0] https://tools.ietf.org/html/draft-smith-vxlan-group-policy
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*/
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struct vxlanhdr_gbp {
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__u8 vx_flags;
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#ifdef __LITTLE_ENDIAN_BITFIELD
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__u8 reserved_flags1:3,
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policy_applied:1,
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reserved_flags2:2,
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dont_learn:1,
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reserved_flags3:1;
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#elif defined(__BIG_ENDIAN_BITFIELD)
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__u8 reserved_flags1:1,
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dont_learn:1,
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reserved_flags2:2,
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policy_applied:1,
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reserved_flags3:3;
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#else
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#error "Please fix <asm/byteorder.h>"
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#endif
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__be16 policy_id;
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__be32 vx_vni;
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};
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#define VXLAN_GBP_USED_BITS (VXLAN_HF_GBP | 0xFFFFFF)
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/* skb->mark mapping
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*
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* |R|R|R|R|R|R|R|R|R|D|R|R|A|R|R|R| Group Policy ID |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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#define VXLAN_GBP_DONT_LEARN (BIT(6) << 16)
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#define VXLAN_GBP_POLICY_APPLIED (BIT(3) << 16)
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#define VXLAN_GBP_ID_MASK (0xFFFF)
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#define VXLAN_F_GBP 0x800
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#endif
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#ifndef VXLAN_F_UDP_CSUM
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#define VXLAN_F_UDP_CSUM 0x40
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#endif
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#ifndef VXLAN_F_RCV_FLAGS
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#define VXLAN_F_RCV_FLAGS VXLAN_F_GBP
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#endif
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#ifdef USE_UPSTREAM_VXLAN
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static inline int rpl_vxlan_xmit_skb(struct vxlan_sock *vs,
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struct rtable *rt, struct sk_buff *skb,
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__be32 src, __be32 dst, __u8 tos, __u8 ttl, __be16 df,
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__be16 src_port, __be16 dst_port,
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struct vxlan_metadata *md, bool xnet, u32 vxflags)
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{
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if (skb_is_gso(skb) && skb_is_encapsulated(skb)) {
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kfree_skb(skb);
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return -ENOSYS;
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}
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return vxlan_xmit_skb(rt, skb, src, dst, tos, ttl, df,
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src_port, dst_port, md, xnet, vxflags);
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}
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#define vxlan_xmit_skb rpl_vxlan_xmit_skb
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#else /* USE_UPSTREAM_VXLAN */
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struct vxlan_metadata {
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__be32 vni;
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u32 gbp;
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};
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#define vxlan_sock rpl_vxlan_sock
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struct rpl_vxlan_sock;
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#define vxlan_rcv_t rpl_vxlan_rcv_t
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typedef void (vxlan_rcv_t)(struct vxlan_sock *vh, struct sk_buff *skb,
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struct vxlan_metadata *md);
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/* per UDP socket information */
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struct vxlan_sock {
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struct hlist_node hlist;
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vxlan_rcv_t *rcv;
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void *data;
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struct work_struct del_work;
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struct socket *sock;
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struct rcu_head rcu;
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u32 flags;
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};
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#define vxlan_sock_add rpl_vxlan_sock_add
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struct vxlan_sock *rpl_vxlan_sock_add(struct net *net, __be16 port,
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vxlan_rcv_t *rcv, void *data,
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bool no_share, u32 flags);
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#define vxlan_sock_release rpl_vxlan_sock_release
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void rpl_vxlan_sock_release(struct vxlan_sock *vs);
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#define vxlan_xmit_skb rpl_vxlan_xmit_skb
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int rpl_vxlan_xmit_skb(struct vxlan_sock *vs,
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struct rtable *rt, struct sk_buff *skb,
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__be32 src, __be32 dst, __u8 tos, __u8 ttl, __be16 df,
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__be16 src_port, __be16 dst_port,
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struct vxlan_metadata *md, bool xnet, u32 vxflags);
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#endif /* !HAVE_VXLAN_METADATA */
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#endif
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