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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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61f3cade76
The work queue is used only to free the UDP socket upon destruction. This is not necessary with Geneve and generally makes the code more difficult to reason about. It also introduces nondeterministic behavior such as when a socket is rapidly deleted and recreated, which could fail as the the deletion happens asynchronously. Signed-off-by: Jesse Gross <jesse@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
97 lines
2.4 KiB
C
97 lines
2.4 KiB
C
#ifndef __NET_GENEVE_H
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#define __NET_GENEVE_H 1
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#ifdef CONFIG_INET
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#include <net/udp_tunnel.h>
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#endif
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/* Geneve Header:
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* |Ver| Opt Len |O|C| Rsvd. | Protocol Type |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Virtual Network Identifier (VNI) | Reserved |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Variable Length Options |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*
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* Option Header:
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Option Class | Type |R|R|R| Length |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* | Variable Option Data |
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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struct geneve_opt {
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__be16 opt_class;
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u8 type;
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#ifdef __LITTLE_ENDIAN_BITFIELD
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u8 length:5;
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u8 r3:1;
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u8 r2:1;
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u8 r1:1;
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#else
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u8 r1:1;
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u8 r2:1;
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u8 r3:1;
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u8 length:5;
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#endif
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u8 opt_data[];
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};
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#define GENEVE_CRIT_OPT_TYPE (1 << 7)
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struct genevehdr {
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#ifdef __LITTLE_ENDIAN_BITFIELD
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u8 opt_len:6;
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u8 ver:2;
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u8 rsvd1:6;
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u8 critical:1;
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u8 oam:1;
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#else
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u8 ver:2;
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u8 opt_len:6;
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u8 oam:1;
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u8 critical:1;
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u8 rsvd1:6;
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#endif
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__be16 proto_type;
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u8 vni[3];
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u8 rsvd2;
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struct geneve_opt options[];
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};
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#ifdef CONFIG_INET
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struct geneve_sock;
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typedef void (geneve_rcv_t)(struct geneve_sock *gs, struct sk_buff *skb);
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struct geneve_sock {
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struct hlist_node hlist;
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geneve_rcv_t *rcv;
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void *rcv_data;
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struct socket *sock;
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struct rcu_head rcu;
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atomic_t refcnt;
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struct udp_offload udp_offloads;
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};
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#define GENEVE_VER 0
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#define GENEVE_BASE_HLEN (sizeof(struct udphdr) + sizeof(struct genevehdr))
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struct geneve_sock *geneve_sock_add(struct net *net, __be16 port,
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geneve_rcv_t *rcv, void *data,
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bool no_share, bool ipv6);
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void geneve_sock_release(struct geneve_sock *vs);
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int geneve_xmit_skb(struct geneve_sock *gs, struct rtable *rt,
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struct sk_buff *skb, __be32 src, __be32 dst, __u8 tos,
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__u8 ttl, __be16 df, __be16 src_port, __be16 dst_port,
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__be16 tun_flags, u8 vni[3], u8 opt_len, u8 *opt,
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bool xnet);
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#endif /*ifdef CONFIG_INET */
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#endif /*ifdef__NET_GENEVE_H */
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