/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (C) 2015-2019 Jason A. Donenfeld . All Rights Reserved. */ #ifndef _WG_COMPAT_H #define _WG_COMPAT_H #include #include #include #include #ifdef RHEL_MAJOR #if RHEL_MAJOR == 7 #define ISRHEL7 #elif RHEL_MAJOR == 8 #define ISRHEL8 #endif #endif #ifdef UTS_UBUNTU_RELEASE_ABI #if LINUX_VERSION_CODE == KERNEL_VERSION(3, 13, 11) #define ISUBUNTU1404 #elif LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0) && LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0) #define ISUBUNTU1604 #endif #endif #ifdef CONFIG_SUSE_KERNEL #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0) && LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0) #define ISOPENSUSE42 #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 13, 0) && LINUX_VERSION_CODE >= KERNEL_VERSION(4, 12, 0) #define ISOPENSUSE15 #endif #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 10, 0) #error "WireGuard requires Linux >= 3.10" #endif #if defined(ISRHEL7) #include #define headers_end headers_start #elif LINUX_VERSION_CODE < KERNEL_VERSION(3, 18, 0) #define headers_start data #define headers_end data #endif #include #include #ifndef __ro_after_init #define __ro_after_init __read_mostly #endif #include #ifndef READ_ONCE #define READ_ONCE ACCESS_ONCE #endif #ifndef WRITE_ONCE #ifdef ACCESS_ONCE_RW #define WRITE_ONCE(p, v) (ACCESS_ONCE_RW(p) = (v)) #else #define WRITE_ONCE(p, v) (ACCESS_ONCE(p) = (v)) #endif #endif #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 17, 0) #include "udp_tunnel/udp_tunnel_partial_compat.h" #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 3, 0) && !defined(DEBUG) && defined(net_dbg_ratelimited) #undef net_dbg_ratelimited #define net_dbg_ratelimited(fmt, ...) do { if (0) no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); } while (0) #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 3, 0) #include #ifndef RCU_LOCKDEP_WARN #define RCU_LOCKDEP_WARN(cond, message) rcu_lockdep_assert(!(cond), message) #endif #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 3, 0) && !defined(ISRHEL7) #define ipv6_dst_lookup(a, b, c, d) ipv6_dst_lookup(b, c, d) #endif #if (LINUX_VERSION_CODE == KERNEL_VERSION(4, 4, 0) || \ (LINUX_VERSION_CODE < KERNEL_VERSION(4, 3, 5) && LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0)) || \ (LINUX_VERSION_CODE < KERNEL_VERSION(4, 1, 17) && LINUX_VERSION_CODE > KERNEL_VERSION(3, 19, 0)) || \ (LINUX_VERSION_CODE < KERNEL_VERSION(3, 18, 27) && LINUX_VERSION_CODE >= KERNEL_VERSION(3, 17, 0)) || \ (LINUX_VERSION_CODE < KERNEL_VERSION(3, 16, 8) && LINUX_VERSION_CODE >= KERNEL_VERSION(3, 15, 0)) || \ (LINUX_VERSION_CODE < KERNEL_VERSION(3, 14, 40) && LINUX_VERSION_CODE >= KERNEL_VERSION(3, 13, 0)) || \ (LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 54))) && !defined(ISUBUNTU1404) && (!defined(ISRHEL7) || RHEL_MINOR < 7) /* TODO: remove < 7 workaround once CentOS 7.7 comes out. */ #include #include #define IP6_ECN_set_ce(a, b) IP6_ECN_set_ce(b) #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0) && IS_ENABLED(CONFIG_IPV6) && !defined(ISRHEL7) #include struct ipv6_stub_type { void *udpv6_encap_enable; int (*ipv6_dst_lookup)(struct sock *sk, struct dst_entry **dst, struct flowi6 *fl6); }; static const struct ipv6_stub_type ipv6_stub_impl = { .udpv6_encap_enable = (void *)1, .ipv6_dst_lookup = ip6_dst_lookup }; static const struct ipv6_stub_type *ipv6_stub = &ipv6_stub_impl; #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 8, 0) && IS_ENABLED(CONFIG_IPV6) && !defined(ISOPENSUSE42) && !defined(ISRHEL7) #include static inline bool ipv6_mod_enabled(void) { return ipv6_stub != NULL && ipv6_stub->udpv6_encap_enable != NULL; } #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 11, 0) && !defined(ISRHEL7) #include static inline void skb_reset_tc(struct sk_buff *skb) { #ifdef CONFIG_NET_CLS_ACT skb->tc_verd = 0; #endif } #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 11, 0) #include #include static inline u32 __compat_get_random_u32(void) { static siphash_key_t key; static u32 counter = 0; #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 4, 0) static bool has_seeded = false; if (unlikely(!has_seeded)) { get_random_bytes(&key, sizeof(key)); has_seeded = true; } #else get_random_once(&key, sizeof(key)); #endif return siphash_2u32(counter++, get_random_int(), &key); } #define get_random_u32 __compat_get_random_u32 #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 18, 0) && !defined(ISRHEL7) static inline void netif_keep_dst(struct net_device *dev) { dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; } #define COMPAT_CANNOT_USE_CSUM_LEVEL #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 14, 0) && !defined(ISRHEL7) #include #ifndef netdev_alloc_pcpu_stats #define pcpu_sw_netstats pcpu_tstats #endif #ifndef netdev_alloc_pcpu_stats #define netdev_alloc_pcpu_stats alloc_percpu #endif #elif LINUX_VERSION_CODE < KERNEL_VERSION(3, 15, 0) && !defined(ISRHEL7) #include #ifndef netdev_alloc_pcpu_stats #define netdev_alloc_pcpu_stats(type) \ ({ \ typeof(type) __percpu *pcpu_stats = alloc_percpu(type); \ if (pcpu_stats) { \ int __cpu; \ for_each_possible_cpu(__cpu) { \ typeof(type) *stat; \ stat = per_cpu_ptr(pcpu_stats, __cpu); \ u64_stats_init(&stat->syncp); \ } \ } \ pcpu_stats; \ }) #endif #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 14, 0) && !defined(ISRHEL7) #include "checksum/checksum_partial_compat.h" static inline void *__compat_pskb_put(struct sk_buff *skb, struct sk_buff *tail, int len) { if (tail != skb) { skb->data_len += len; skb->len += len; } return skb_put(tail, len); } #define pskb_put __compat_pskb_put #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 11, 0) && !defined(ISRHEL7) #include static inline void skb_scrub_packet(struct sk_buff *skb, bool xnet) { #ifdef CONFIG_CAVIUM_OCTEON_IPFWD_OFFLOAD memset(&skb->cvm_info, 0, sizeof(skb->cvm_info)); skb->cvm_reserved = 0; #endif skb->tstamp.tv64 = 0; skb->pkt_type = PACKET_HOST; skb->skb_iif = 0; skb_dst_drop(skb); secpath_reset(skb); nf_reset(skb); nf_reset_trace(skb); if (!xnet) return; skb_orphan(skb); skb->mark = 0; } #endif #if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0) || defined(ISUBUNTU1404)) && !defined(ISRHEL7) #include static inline u32 __compat_prandom_u32_max(u32 ep_ro) { return (u32)(((u64)prandom_u32() * ep_ro) >> 32); } #define prandom_u32_max __compat_prandom_u32_max #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 10, 75) && !defined(ISRHEL7) #ifndef U8_MAX #define U8_MAX ((u8)~0U) #endif #ifndef S8_MAX #define S8_MAX ((s8)(U8_MAX >> 1)) #endif #ifndef S8_MIN #define S8_MIN ((s8)(-S8_MAX - 1)) #endif #ifndef U16_MAX #define U16_MAX ((u16)~0U) #endif #ifndef S16_MAX #define S16_MAX ((s16)(U16_MAX >> 1)) #endif #ifndef S16_MIN #define S16_MIN ((s16)(-S16_MAX - 1)) #endif #ifndef U32_MAX #define U32_MAX ((u32)~0U) #endif #ifndef S32_MAX #define S32_MAX ((s32)(U32_MAX >> 1)) #endif #ifndef S32_MIN #define S32_MIN ((s32)(-S32_MAX - 1)) #endif #ifndef U64_MAX #define U64_MAX ((u64)~0ULL) #endif #ifndef S64_MAX #define S64_MAX ((s64)(U64_MAX >> 1)) #endif #ifndef S64_MIN #define S64_MIN ((s64)(-S64_MAX - 1)) #endif #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 10, 60) && !defined(ISRHEL7) /* Making this static may very well invalidate its usefulness, * but so it goes with compat code. */ static inline void memzero_explicit(void *s, size_t count) { memset(s, 0, count); barrier(); } #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0) && !defined(ISRHEL7) static const struct in6_addr __compat_in6addr_any = IN6ADDR_ANY_INIT; #define in6addr_any __compat_in6addr_any #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 13, 0) && LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) && !defined(ISOPENSUSE15) #include #include #include struct rng_initializer { struct completion done; struct random_ready_callback cb; }; static inline void rng_initialized_callback(struct random_ready_callback *cb) { complete(&container_of(cb, struct rng_initializer, cb)->done); } static inline int wait_for_random_bytes(void) { static bool rng_is_initialized = false; int ret; if (unlikely(!rng_is_initialized)) { struct rng_initializer rng = { .done = COMPLETION_INITIALIZER(rng.done), .cb = { .owner = THIS_MODULE, .func = rng_initialized_callback } }; ret = add_random_ready_callback(&rng.cb); if (!ret) { ret = wait_for_completion_interruptible(&rng.done); if (ret) { del_random_ready_callback(&rng.cb); return ret; } } else if (ret != -EALREADY) return ret; rng_is_initialized = true; } return 0; } #elif LINUX_VERSION_CODE < KERNEL_VERSION(4, 2, 0) /* This is a disaster. Without this API, we really have no way of * knowing if it's initialized. We just return that it has and hope * for the best... */ static inline int wait_for_random_bytes(void) { return 0; } #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 19, 0) && LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0) && !defined(ISRHEL8) #include #include struct rng_is_initialized_callback { struct random_ready_callback cb; atomic_t *rng_state; }; static inline void rng_is_initialized_callback(struct random_ready_callback *cb) { struct rng_is_initialized_callback *rdy = container_of(cb, struct rng_is_initialized_callback, cb); atomic_set(rdy->rng_state, 2); kfree(rdy); } static inline bool rng_is_initialized(void) { static atomic_t rng_state = ATOMIC_INIT(0); if (atomic_read(&rng_state) == 2) return true; if (atomic_cmpxchg(&rng_state, 0, 1) == 0) { int ret; struct rng_is_initialized_callback *rdy = kmalloc(sizeof(*rdy), GFP_ATOMIC); if (!rdy) { atomic_set(&rng_state, 0); return false; } rdy->cb.owner = THIS_MODULE; rdy->cb.func = rng_is_initialized_callback; rdy->rng_state = &rng_state; ret = add_random_ready_callback(&rdy->cb); if (ret) kfree(rdy); if (ret == -EALREADY) { atomic_set(&rng_state, 2); return true; } else if (ret) atomic_set(&rng_state, 0); return false; } return false; } #elif LINUX_VERSION_CODE < KERNEL_VERSION(4, 2, 0) /* This is a disaster. Without this API, we really have no way of * knowing if it's initialized. We just return that it has and hope * for the best... */ static inline bool rng_is_initialized(void) { return true; } #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 13, 0) && !defined(ISOPENSUSE15) static inline int get_random_bytes_wait(void *buf, int nbytes) { int ret = wait_for_random_bytes(); if (unlikely(ret)) return ret; get_random_bytes(buf, nbytes); return 0; } #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 11, 0) && !defined(ISRHEL7) #define system_power_efficient_wq system_unbound_wq #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 3, 0) #include #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0) #include #ifndef ktime_get_real_ts64 #define timespec64 timespec #define ktime_get_real_ts64 ktime_get_real_ts #endif #else #include #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 11, 0) static inline u64 __compat_jiffies64_to_nsecs(u64 j) { #if !(NSEC_PER_SEC % HZ) return (NSEC_PER_SEC / HZ) * j; #else return div_u64(j * HZ_TO_USEC_NUM, HZ_TO_USEC_DEN) * 1000; #endif } #define jiffies64_to_nsecs __compat_jiffies64_to_nsecs #endif static inline u64 ktime_get_coarse_boottime_ns(void) { #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0) return ktime_to_ns(ktime_get_boottime()); #elif (LINUX_VERSION_CODE < KERNEL_VERSION(5, 1, 12) && LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0)) || LINUX_VERSION_CODE < KERNEL_VERSION(4, 19, 53) return ktime_to_ns(ktime_mono_to_any(ns_to_ktime(jiffies64_to_nsecs(get_jiffies_64())), TK_OFFS_BOOT)); #else return ktime_to_ns(ktime_get_coarse_boottime()); #endif } #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 14, 0) #include static inline __be32 __compat_confirm_addr_indev(struct in_device *in_dev, __be32 dst, __be32 local, int scope) { int same = 0; __be32 addr = 0; for_ifa(in_dev) { if (!addr && (local == ifa->ifa_local || !local) && ifa->ifa_scope <= scope) { addr = ifa->ifa_local; if (same) break; } if (!same) { same = (!local || inet_ifa_match(local, ifa)) && (!dst || inet_ifa_match(dst, ifa)); if (same && addr) { if (local || !dst) break; if (inet_ifa_match(addr, ifa)) break; if (ifa->ifa_scope <= scope) { addr = ifa->ifa_local; break; } same = 0; } } } endfor_ifa(in_dev); return same ? addr : 0; } static inline __be32 __compat_inet_confirm_addr(struct net *net, struct in_device *in_dev, __be32 dst, __be32 local, int scope) { __be32 addr = 0; struct net_device *dev; if (in_dev) return __compat_confirm_addr_indev(in_dev, dst, local, scope); rcu_read_lock(); for_each_netdev_rcu(net, dev) { in_dev = __in_dev_get_rcu(dev); if (in_dev) { addr = __compat_confirm_addr_indev(in_dev, dst, local, scope); if (addr) break; } } rcu_read_unlock(); return addr; } #define inet_confirm_addr __compat_inet_confirm_addr #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 12, 0) #include #include #include static inline void *__compat_kvmalloc(size_t size, gfp_t flags) { gfp_t kmalloc_flags = flags; void *ret; if (size > PAGE_SIZE) { kmalloc_flags |= __GFP_NOWARN; if (!(kmalloc_flags & __GFP_REPEAT) || (size <= PAGE_SIZE << PAGE_ALLOC_COSTLY_ORDER)) kmalloc_flags |= __GFP_NORETRY; } ret = kmalloc(size, kmalloc_flags); if (ret || size <= PAGE_SIZE) return ret; return __vmalloc(size, flags, PAGE_KERNEL); } static inline void *__compat_kvzalloc(size_t size, gfp_t flags) { return __compat_kvmalloc(size, flags | __GFP_ZERO); } #define kvmalloc __compat_kvmalloc #define kvzalloc __compat_kvzalloc #endif #if ((LINUX_VERSION_CODE < KERNEL_VERSION(3, 15, 0) && LINUX_VERSION_CODE >= KERNEL_VERSION(3, 13, 0)) || LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 41)) && !defined(ISUBUNTU1404) #include #include static inline void __compat_kvfree(const void *addr) { if (is_vmalloc_addr(addr)) vfree(addr); else kfree(addr); } #define kvfree __compat_kvfree #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 11, 9) #include #define priv_destructor destructor #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 13, 0) && !defined(ISOPENSUSE15) #define wg_newlink(a,b,c,d,e) wg_newlink(a,b,c,d) #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 12, 0) #include #include #define nlmsg_parse(a, b, c, d, e, f) nlmsg_parse(a, b, c, d, e) #define nla_parse_nested(a, b, c, d, e) nla_parse_nested(a, b, c, d) #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0) && !defined(ISRHEL7) static inline struct nlattr **genl_family_attrbuf(const struct genl_family *family) { return family->attrbuf; } #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0) #define PTR_ERR_OR_ZERO(p) PTR_RET(p) #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 7, 0) #include #define nla_put_u64_64bit(a, b, c, d) nla_put_u64(a, b, c) #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 6, 0) #include #ifndef GENL_UNS_ADMIN_PERM #define GENL_UNS_ADMIN_PERM GENL_ADMIN_PERM #endif #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0) && !defined(ISRHEL7) #include #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 13, 0) #define genl_register_family(a) genl_register_family_with_ops(a, genl_ops, ARRAY_SIZE(genl_ops)) #define COMPAT_CANNOT_USE_CONST_GENL_OPS #else #define genl_register_family(a) genl_register_family_with_ops(a, genl_ops) #endif #define COMPAT_CANNOT_USE_GENL_NOPS #endif #if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 14, 2) && LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 0)) || (LINUX_VERSION_CODE < KERNEL_VERSION(4, 13, 16) && LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)) || (LINUX_VERSION_CODE < KERNEL_VERSION(4, 9, 65) && LINUX_VERSION_CODE >= KERNEL_VERSION(4, 5, 0)) || (LINUX_VERSION_CODE < KERNEL_VERSION(4, 4, 101) && LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)) || LINUX_VERSION_CODE < KERNEL_VERSION(3, 18, 84) #define __COMPAT_NETLINK_DUMP_BLOCK { \ int ret; \ skb->end -= nlmsg_total_size(sizeof(int)); \ ret = wg_get_device_dump_real(skb, cb); \ skb->end += nlmsg_total_size(sizeof(int)); \ return ret; \ } #define __COMPAT_NETLINK_DUMP_OVERRIDE #else #define __COMPAT_NETLINK_DUMP_BLOCK return wg_get_device_dump_real(skb, cb); #endif #if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 8) && LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 0)) || (LINUX_VERSION_CODE < KERNEL_VERSION(4, 14, 25) && LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)) || LINUX_VERSION_CODE < KERNEL_VERSION(4, 9, 87) #define wg_get_device_dump(a, b) wg_get_device_dump_real(a, b); \ static int wg_get_device_dump(a, b) { \ struct wg_device *wg = (struct wg_device *)cb->args[0]; \ if (!wg) { \ int ret = wg_get_device_start(cb); \ if (ret) \ return ret; \ } \ __COMPAT_NETLINK_DUMP_BLOCK \ } \ static int wg_get_device_dump_real(a, b) #define COMPAT_CANNOT_USE_NETLINK_START #elif defined(__COMPAT_NETLINK_DUMP_OVERRIDE) #define wg_get_device_dump(a, b) wg_get_device_dump_real(a, b); \ static int wg_get_device_dump(a, b) { \ __COMPAT_NETLINK_DUMP_BLOCK \ } \ static int wg_get_device_dump_real(a, b) #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0) #define COMPAT_CANNOT_USE_IN6_DEV_GET #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 3, 0) #define COMPAT_CANNOT_USE_IFF_NO_QUEUE #endif #if defined(CONFIG_X86_64) && LINUX_VERSION_CODE < KERNEL_VERSION(4, 4, 0) #include #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 2, 0) #include #include static inline int cpu_has_xfeatures(u64 xfeatures_needed, const char **feature_name) { return boot_cpu_has(X86_FEATURE_XSAVE) && xgetbv(XCR_XFEATURE_ENABLED_MASK) & xfeatures_needed; } #endif #ifndef XFEATURE_MASK_YMM #define XFEATURE_MASK_YMM XSTATE_YMM #endif #ifndef XFEATURE_MASK_SSE #define XFEATURE_MASK_SSE XSTATE_SSE #endif #ifndef XSTATE_AVX512 #define XSTATE_AVX512 (XSTATE_OPMASK | XSTATE_ZMM_Hi256 | XSTATE_Hi16_ZMM) #endif #ifndef XFEATURE_MASK_AVX512 #define XFEATURE_MASK_AVX512 XSTATE_AVX512 #endif #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 6, 0) && defined(CONFIG_X86_64) /* This is incredibly dumb and reckless, but as it turns out, there's * not really hardware Linux runs properly on that supports F but not BW * and VL, so in practice this isn't so bad. Plus, this is compat layer, * so the bar remains fairly low. */ #include #ifndef X86_FEATURE_AVX512BW #define X86_FEATURE_AVX512BW X86_FEATURE_AVX512F #endif #ifndef X86_FEATURE_AVX512VL #define X86_FEATURE_AVX512VL X86_FEATURE_AVX512F #endif #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 11, 0) struct __compat_dummy_container { char dev; }; #define netdev_notifier_info net_device *)data); __attribute((unused)) char __compat_dummy_variable = ((struct __compat_dummy_container #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 14, 0) #define timer_setup(a, b, c) setup_timer(a, ((void (*)(unsigned long))b), ((unsigned long)a)) #define from_timer(var, callback_timer, timer_fieldname) container_of(callback_timer, typeof(*var), timer_fieldname) #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 14, 3) #define COMPAT_CANNOT_USE_AVX512 #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0) #include #define genl_dump_check_consistent(a, b) genl_dump_check_consistent(a, b, &genl_family) #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 13, 0) && !defined(ISRHEL7) && !defined(ISOPENSUSE15) static inline void *skb_put_data(struct sk_buff *skb, const void *data, unsigned int len) { void *tmp = skb_put(skb, len); memcpy(tmp, data, len); return tmp; } #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 19, 0) && !defined(ISRHEL7) #define napi_complete_done(n, work_done) napi_complete(n) #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0) #include /* NAPI_STATE_SCHED gets set by netif_napi_add anyway, so this is safe. * Also, kernels without NAPI_STATE_NO_BUSY_POLL don't have a call to * napi_hash_add inside of netif_napi_add. */ #define NAPI_STATE_NO_BUSY_POLL NAPI_STATE_SCHED #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 14, 0) #include #ifndef atomic_read_acquire #define atomic_read_acquire(v) ({ int __compat_p1 = atomic_read(v); smp_rmb(); __compat_p1; }) #endif #ifndef atomic_set_release #define atomic_set_release(v, i) ({ smp_wmb(); atomic_set(v, i); }) #endif #elif LINUX_VERSION_CODE < KERNEL_VERSION(4, 3, 0) #include #ifndef atomic_read_acquire #define atomic_read_acquire(v) smp_load_acquire(&(v)->counter) #endif #ifndef atomic_set_release #define atomic_set_release(v, i) smp_store_release(&(v)->counter, (i)) #endif #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 17, 0) static inline void le32_to_cpu_array(u32 *buf, unsigned int words) { while (words--) { __le32_to_cpus(buf); buf++; } } static inline void cpu_to_le32_array(u32 *buf, unsigned int words) { while (words--) { __cpu_to_le32s(buf); buf++; } } #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 14, 0) #include static inline void crypto_xor_cpy(u8 *dst, const u8 *src1, const u8 *src2, unsigned int size) { if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && __builtin_constant_p(size) && (size % sizeof(unsigned long)) == 0) { unsigned long *d = (unsigned long *)dst; unsigned long *s1 = (unsigned long *)src1; unsigned long *s2 = (unsigned long *)src2; while (size > 0) { *d++ = *s1++ ^ *s2++; size -= sizeof(unsigned long); } } else { if (unlikely(dst != src1)) memmove(dst, src1, size); #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 11, 0) crypto_xor(dst, src2, size); #else __crypto_xor(dst, src2, size); #endif } } #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0) #define read_cpuid_part() read_cpuid_part_number() #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0) && !defined(ISRHEL7) #define hlist_add_behind(a, b) hlist_add_after(b, a) #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 0, 0) #define totalram_pages() totalram_pages #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 18, 0) struct __kernel_timespec { int64_t tv_sec, tv_nsec; }; #elif LINUX_VERSION_CODE < KERNEL_VERSION(5, 1, 0) #include #ifdef __kernel_timespec #undef __kernel_timespec struct __kernel_timespec { int64_t tv_sec, tv_nsec; }; #endif #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 12, 0) #include #ifndef ALIGN_DOWN #define ALIGN_DOWN(x, a) __ALIGN_KERNEL((x) - ((a) - 1), (a)) #endif #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 1, 0) #include #define skb_probe_transport_header(a) skb_probe_transport_header(a, 0) #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 16, 0) && !defined(ISRHEL7) #define ignore_df local_df #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 1, 0) /* Note that all intentional uses of the non-_bh variety need to explicitly * undef these, conditionalized on COMPAT_CANNOT_DEPRECIATE_BH_RCU. */ #include static __always_inline void old_synchronize_rcu(void) { synchronize_rcu(); } static __always_inline void old_call_rcu(void *a, void *b) { call_rcu(a, b); } static __always_inline void old_rcu_barrier(void) { rcu_barrier(); } #ifdef synchronize_rcu #undef synchronize_rcu #endif #ifdef call_rcu #undef call_rcu #endif #ifdef rcu_barrier #undef rcu_barrier #endif #define synchronize_rcu synchronize_rcu_bh #define call_rcu call_rcu_bh #define rcu_barrier rcu_barrier_bh #define COMPAT_CANNOT_DEPRECIATE_BH_RCU #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 19, 10) && !defined(ISRHEL8) static inline void skb_mark_not_on_list(struct sk_buff *skb) { skb->next = NULL; } #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 20, 0) && !defined(ISRHEL8) #define NLA_EXACT_LEN NLA_UNSPEC #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 2, 0) #define NLA_MIN_LEN NLA_UNSPEC #define COMPAT_CANNOT_INDIVIDUAL_NETLINK_OPS_POLICY #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 2, 0) && defined(__aarch64__) #define cpu_have_named_feature(name) (elf_hwcap & (HWCAP_ ## name)) #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 1, 0) #include #ifndef offsetofend #define offsetofend(TYPE, MEMBER) (offsetof(TYPE, MEMBER) + sizeof(((TYPE *)0)->MEMBER)) #endif #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 5, 0) #define genl_dumpit_info(cb) ({ \ struct { struct nlattr **attrs; } *a = (void *)((u8 *)cb->args + offsetofend(struct dump_ctx, next_allowedip)); \ BUILD_BUG_ON(sizeof(cb->args) < offsetofend(struct dump_ctx, next_allowedip) + sizeof(*a)); \ a->attrs = genl_family_attrbuf(&genl_family); \ if (nlmsg_parse(cb->nlh, GENL_HDRLEN + genl_family.hdrsize, a->attrs, genl_family.maxattr, device_policy, NULL) < 0) \ memset(a->attrs, 0, (genl_family.maxattr + 1) * sizeof(struct nlattr *)); \ a; \ }) #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 5, 0) #define ipv6_dst_lookup_flow(a, b, c, d) ipv6_dst_lookup(a, b, &dst, c) + (void *)0 ?: dst #endif #if defined(ISUBUNTU1604) #include #ifndef _WG_LINUX_SIPHASH_H #define hsiphash_2u32 siphash_2u32 #define hsiphash_3u32 siphash_3u32 #define hsiphash_key_t siphash_key_t #endif #endif #ifdef CONFIG_VE #include #ifdef NETIF_F_VIRTUAL #undef NETIF_F_LLTX #define NETIF_F_LLTX (__NETIF_F(LLTX) | __NETIF_F(VIRTUAL)) #endif #endif /* https://github.com/ClangBuiltLinux/linux/issues/7 */ #if defined( __clang__) && (!defined(CONFIG_CLANG_VERSION) || CONFIG_CLANG_VERSION < 80000) #include #undef BUILD_BUG_ON #define BUILD_BUG_ON(x) #endif /* https://lkml.kernel.org/r/20170624021727.17835-1-Jason@zx2c4.com */ #if IS_ENABLED(CONFIG_NF_CONNTRACK) #include #include #include #include #include #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 1, 0) #include #endif static inline void new_icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info) { enum ip_conntrack_info ctinfo; struct nf_conn *ct = nf_ct_get(skb_in, &ctinfo); if (skb_network_header(skb_in) < skb_in->head || (skb_network_header(skb_in) + sizeof(struct iphdr)) > skb_tail_pointer(skb_in)) return; if (ct) ip_hdr(skb_in)->saddr = ct->tuplehash[0].tuple.src.u3.ip; icmp_send(skb_in, type, code, info); } static inline void new_icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info) { enum ip_conntrack_info ctinfo; struct nf_conn *ct = nf_ct_get(skb, &ctinfo); if (skb_network_header(skb) < skb->head || (skb_network_header(skb) + sizeof(struct ipv6hdr)) > skb_tail_pointer(skb)) return; if (ct) ipv6_hdr(skb)->saddr = ct->tuplehash[0].tuple.src.u3.in6; icmpv6_send(skb, type, code, info); } #define icmp_send(a,b,c,d) new_icmp_send(a,b,c,d) #define icmpv6_send(a,b,c,d) new_icmpv6_send(a,b,c,d) #endif /* PaX compatibility */ #ifdef CONSTIFY_PLUGIN #include #undef __read_mostly #define __read_mostly #endif #if (defined(RAP_PLUGIN) || defined(CONFIG_CFI_CLANG)) && LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0) #include #define wg_expired_retransmit_handshake(a) wg_expired_retransmit_handshake(unsigned long timer) #define wg_expired_send_keepalive(a) wg_expired_send_keepalive(unsigned long timer) #define wg_expired_new_handshake(a) wg_expired_new_handshake(unsigned long timer) #define wg_expired_zero_key_material(a) wg_expired_zero_key_material(unsigned long timer) #define wg_expired_send_persistent_keepalive(a) wg_expired_send_persistent_keepalive(unsigned long timer) #undef timer_setup #define timer_setup(a, b, c) setup_timer(a, ((void (*)(unsigned long))b), ((unsigned long)a)) #undef from_timer #define from_timer(var, callback_timer, timer_fieldname) container_of((struct timer_list *)callback_timer, typeof(*var), timer_fieldname) #endif #endif /* _WG_COMPAT_H */