^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #ifndef __NET_LWTUNNEL_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #define __NET_LWTUNNEL_H 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <linux/lwtunnel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/netdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/skbuff.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <net/route.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define LWTUNNEL_HASH_BITS 7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #define LWTUNNEL_HASH_SIZE (1 << LWTUNNEL_HASH_BITS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) /* lw tunnel state flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define LWTUNNEL_STATE_OUTPUT_REDIRECT BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define LWTUNNEL_STATE_INPUT_REDIRECT BIT(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define LWTUNNEL_STATE_XMIT_REDIRECT BIT(2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) LWTUNNEL_XMIT_DONE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) LWTUNNEL_XMIT_CONTINUE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) struct lwtunnel_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) __u16 type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) __u16 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) __u16 headroom;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) atomic_t refcnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) int (*orig_output)(struct net *net, struct sock *sk, struct sk_buff *skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) int (*orig_input)(struct sk_buff *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct rcu_head rcu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) __u8 data[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) struct lwtunnel_encap_ops {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) int (*build_state)(struct net *net, struct nlattr *encap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) unsigned int family, const void *cfg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) struct lwtunnel_state **ts,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct netlink_ext_ack *extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) void (*destroy_state)(struct lwtunnel_state *lws);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) int (*output)(struct net *net, struct sock *sk, struct sk_buff *skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) int (*input)(struct sk_buff *skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) int (*fill_encap)(struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct lwtunnel_state *lwtstate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) int (*get_encap_size)(struct lwtunnel_state *lwtstate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) int (*cmp_encap)(struct lwtunnel_state *a, struct lwtunnel_state *b);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) int (*xmit)(struct sk_buff *skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) struct module *owner;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #ifdef CONFIG_LWTUNNEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) void lwtstate_free(struct lwtunnel_state *lws);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) static inline struct lwtunnel_state *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) lwtstate_get(struct lwtunnel_state *lws)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) if (lws)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) atomic_inc(&lws->refcnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) return lws;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static inline void lwtstate_put(struct lwtunnel_state *lws)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) if (!lws)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) if (atomic_dec_and_test(&lws->refcnt))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) lwtstate_free(lws);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) static inline bool lwtunnel_output_redirect(struct lwtunnel_state *lwtstate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) if (lwtstate && (lwtstate->flags & LWTUNNEL_STATE_OUTPUT_REDIRECT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) static inline bool lwtunnel_input_redirect(struct lwtunnel_state *lwtstate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) if (lwtstate && (lwtstate->flags & LWTUNNEL_STATE_INPUT_REDIRECT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) static inline bool lwtunnel_xmit_redirect(struct lwtunnel_state *lwtstate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) if (lwtstate && (lwtstate->flags & LWTUNNEL_STATE_XMIT_REDIRECT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) static inline unsigned int lwtunnel_headroom(struct lwtunnel_state *lwtstate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) unsigned int mtu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if ((lwtunnel_xmit_redirect(lwtstate) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) lwtunnel_output_redirect(lwtstate)) && lwtstate->headroom < mtu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) return lwtstate->headroom;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) int lwtunnel_encap_add_ops(const struct lwtunnel_encap_ops *op,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) unsigned int num);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) int lwtunnel_encap_del_ops(const struct lwtunnel_encap_ops *op,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) unsigned int num);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) int lwtunnel_valid_encap_type(u16 encap_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) struct netlink_ext_ack *extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) int lwtunnel_valid_encap_type_attr(struct nlattr *attr, int len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) struct netlink_ext_ack *extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) int lwtunnel_build_state(struct net *net, u16 encap_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) struct nlattr *encap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) unsigned int family, const void *cfg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) struct lwtunnel_state **lws,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) struct netlink_ext_ack *extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) int lwtunnel_fill_encap(struct sk_buff *skb, struct lwtunnel_state *lwtstate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) int encap_attr, int encap_type_attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) int lwtunnel_get_encap_size(struct lwtunnel_state *lwtstate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) struct lwtunnel_state *lwtunnel_state_alloc(int hdr_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) int lwtunnel_cmp_encap(struct lwtunnel_state *a, struct lwtunnel_state *b);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) int lwtunnel_output(struct net *net, struct sock *sk, struct sk_buff *skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) int lwtunnel_input(struct sk_buff *skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) int lwtunnel_xmit(struct sk_buff *skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) int bpf_lwt_push_ip_encap(struct sk_buff *skb, void *hdr, u32 len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) bool ingress);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) static inline void lwtunnel_set_redirect(struct dst_entry *dst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) if (lwtunnel_output_redirect(dst->lwtstate)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) dst->lwtstate->orig_output = dst->output;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) dst->output = lwtunnel_output;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) if (lwtunnel_input_redirect(dst->lwtstate)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) dst->lwtstate->orig_input = dst->input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) dst->input = lwtunnel_input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) static inline void lwtstate_free(struct lwtunnel_state *lws)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) static inline struct lwtunnel_state *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) lwtstate_get(struct lwtunnel_state *lws)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) return lws;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) static inline void lwtstate_put(struct lwtunnel_state *lws)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) static inline bool lwtunnel_output_redirect(struct lwtunnel_state *lwtstate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) static inline bool lwtunnel_input_redirect(struct lwtunnel_state *lwtstate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) static inline bool lwtunnel_xmit_redirect(struct lwtunnel_state *lwtstate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) static inline void lwtunnel_set_redirect(struct dst_entry *dst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) static inline unsigned int lwtunnel_headroom(struct lwtunnel_state *lwtstate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) unsigned int mtu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) static inline int lwtunnel_encap_add_ops(const struct lwtunnel_encap_ops *op,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) unsigned int num)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) static inline int lwtunnel_encap_del_ops(const struct lwtunnel_encap_ops *op,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) unsigned int num)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) static inline int lwtunnel_valid_encap_type(u16 encap_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) NL_SET_ERR_MSG(extack, "CONFIG_LWTUNNEL is not enabled in this kernel");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) static inline int lwtunnel_valid_encap_type_attr(struct nlattr *attr, int len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) /* return 0 since we are not walking attr looking for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) * RTA_ENCAP_TYPE attribute on nexthops.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) static inline int lwtunnel_build_state(struct net *net, u16 encap_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) struct nlattr *encap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) unsigned int family, const void *cfg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) struct lwtunnel_state **lws,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) static inline int lwtunnel_fill_encap(struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) struct lwtunnel_state *lwtstate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) int encap_attr, int encap_type_attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) static inline int lwtunnel_get_encap_size(struct lwtunnel_state *lwtstate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) static inline struct lwtunnel_state *lwtunnel_state_alloc(int hdr_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) static inline int lwtunnel_cmp_encap(struct lwtunnel_state *a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) struct lwtunnel_state *b)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) static inline int lwtunnel_output(struct net *net, struct sock *sk, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) static inline int lwtunnel_input(struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) static inline int lwtunnel_xmit(struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) #endif /* CONFIG_LWTUNNEL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) #define MODULE_ALIAS_RTNL_LWT(encap_type) MODULE_ALIAS("rtnl-lwt-" __stringify(encap_type))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) #endif /* __NET_LWTUNNEL_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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