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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>
110 lines
2.9 KiB
C
110 lines
2.9 KiB
C
#ifndef __NET_UDP_TUNNEL_WRAPPER_H
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#define __NET_UDP_TUNNEL_WRAPPER_H
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#include <linux/version.h>
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#include <linux/kconfig.h>
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,20,0)
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#include_next <net/udp_tunnel.h>
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static inline struct sk_buff *
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rpl_udp_tunnel_handle_offloads(struct sk_buff *skb, bool udp_csum,
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bool is_vxlan)
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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 ERR_PTR(-ENOSYS);
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}
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return udp_tunnel_handle_offloads(skb, udp_csum);
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}
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#define udp_tunnel_handle_offloads rpl_udp_tunnel_handle_offloads
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#else
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#include <net/ip_tunnels.h>
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#include <net/udp.h>
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struct udp_port_cfg {
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u8 family;
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/* Used only for kernel-created sockets */
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union {
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struct in_addr local_ip;
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#if IS_ENABLED(CONFIG_IPV6)
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struct in6_addr local_ip6;
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#endif
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};
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union {
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struct in_addr peer_ip;
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#if IS_ENABLED(CONFIG_IPV6)
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struct in6_addr peer_ip6;
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#endif
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};
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__be16 local_udp_port;
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__be16 peer_udp_port;
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unsigned int use_udp_checksums:1,
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use_udp6_tx_checksums:1,
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use_udp6_rx_checksums:1;
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};
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#define udp_sock_create rpl_udp_sock_create
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int rpl_udp_sock_create(struct net *net, struct udp_port_cfg *cfg,
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struct socket **sockp);
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typedef int (*udp_tunnel_encap_rcv_t)(struct sock *sk, struct sk_buff *skb);
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typedef void (*udp_tunnel_encap_destroy_t)(struct sock *sk);
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struct udp_tunnel_sock_cfg {
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void *sk_user_data; /* user data used by encap_rcv call back */
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/* Used for setting up udp_sock fields, see udp.h for details */
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__u8 encap_type;
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udp_tunnel_encap_rcv_t encap_rcv;
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udp_tunnel_encap_destroy_t encap_destroy;
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};
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/* Setup the given (UDP) sock to receive UDP encapsulated packets */
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#define setup_udp_tunnel_sock rpl_setup_udp_tunnel_sock
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void rpl_setup_udp_tunnel_sock(struct net *net, struct socket *sock,
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struct udp_tunnel_sock_cfg *sock_cfg);
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/* Transmit the skb using UDP encapsulation. */
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#define udp_tunnel_xmit_skb rpl_udp_tunnel_xmit_skb
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int rpl_udp_tunnel_xmit_skb(struct rtable *rt, struct sk_buff *skb,
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__be32 src, __be32 dst, __u8 tos, __u8 ttl,
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__be16 df, __be16 src_port, __be16 dst_port,
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bool xnet, bool nocheck);
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#define udp_tunnel_sock_release rpl_udp_tunnel_sock_release
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void rpl_udp_tunnel_sock_release(struct socket *sock);
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void ovs_udp_gso(struct sk_buff *skb);
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void ovs_udp_csum_gso(struct sk_buff *skb);
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static inline struct sk_buff *udp_tunnel_handle_offloads(struct sk_buff *skb,
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bool udp_csum,
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bool is_vxlan)
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{
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int type = udp_csum ? SKB_GSO_UDP_TUNNEL_CSUM : SKB_GSO_UDP_TUNNEL;
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void (*fix_segment)(struct sk_buff *);
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if (!udp_csum)
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fix_segment = ovs_udp_gso;
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else
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fix_segment = ovs_udp_csum_gso;
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#if LINUX_VERSION_CODE < KERNEL_VERSION(3,18,0)
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if (!is_vxlan)
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type = 0;
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#endif
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return ovs_iptunnel_handle_offloads(skb, udp_csum, type, fix_segment);
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}
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#define udp_tunnel_encap_enable(sock) udp_encap_enable()
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#endif /* Linux version < 3.20 */
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#endif
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