Development discussion of WireGuard
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From: wireguard@wut.to
To: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: WireGuard mailing list <wireguard@lists.zx2c4.com>
Subject: Re: making wireguard work on RHEL7/etc.
Date: Mon, 26 Jun 2017 20:55:02 +0100 (BST)	[thread overview]
Message-ID: <alpine.LRH.2.20.1706262050540.17486@bcny.fcbq.bet> (raw)
In-Reply-To: <CAHmME9ph1LQ0kufpf2RMDsMRpz7txWJGvr=d=Jr5Z1kxqqOWfQ@mail.gmail.com>

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I think this might work ...

I was still able to compile on Amazon AMI/4.9.32 Kernel




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diff --git a/src/compat/compat.h b/src/compat/compat.h
index 159abb1..903c9be 100644
--- a/src/compat/compat.h
+++ b/src/compat/compat.h
@@ -7,6 +7,13 @@
 #include <linux/version.h>
 #include <linux/types.h>
 
+//#undef  LINUX_VERSION_CODE
+//#define LINUX_VERSION_CODE KERNEL_VERSION(3, 18, 0)
+
+#if defined(RHEL_MAJOR) && RHEL_MAJOR <= 7
+#define ISRHEL7
+#endif
+
 #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 10, 0)
 #error "WireGuard requires Linux >= 3.10"
 #endif
@@ -15,7 +22,7 @@
 #define CONFIG_AS_SSSE3
 #endif
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 18, 0)
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 18, 0)) && !defined(ISRHEL7)
 #define headers_start data
 #define headers_end data
 #endif
@@ -34,13 +41,15 @@
 #endif
 
 #if (LINUX_VERSION_CODE > KERNEL_VERSION(3, 19, 0) && LINUX_VERSION_CODE < KERNEL_VERSION(3, 19, 6)) || \
-    (LINUX_VERSION_CODE < KERNEL_VERSION(3, 18, 12) && 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, 18, 12) && 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)
+#if !defined(ISRHEL7)
 #define dev_recursion_level() 0
 #endif
+#endif
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 3, 0)
+#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
 
@@ -49,21 +58,21 @@
     (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))
+    (LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 54) || defined(ISRHEL7))
 
 #include <linux/if.h>
 #include <net/ip_tunnels.h>
 #define IP6_ECN_set_ce(a, b) IP6_ECN_set_ce(b)
 #endif
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 9, 0)
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 9, 0))
 #define time_is_before_jiffies64(a) time_after64(get_jiffies_64(), a)
 #define time_is_after_jiffies64(a) time_before64(get_jiffies_64(), a)
 #define time_is_before_eq_jiffies64(a) time_after_eq64(get_jiffies_64(), a)
 #define time_is_after_eq_jiffies64(a) time_before_eq64(get_jiffies_64(), a)
 #endif
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0) && IS_ENABLED(CONFIG_IPV6)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0) && IS_ENABLED(CONFIG_IPV6) && !defined(ISRHEL7)
 #include <net/ipv6.h>
 struct ipv6_stub_type {
 	void *udpv6_encap_enable;
@@ -114,17 +123,17 @@ static inline u32 get_random_u32(void)
 }
 #endif
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 18, 0)
+#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;
 }
 #endif
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 14, 0)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 14, 0) && !defined(ISRHEL7)
 #define pcpu_sw_netstats pcpu_tstats
 #define netdev_alloc_pcpu_stats alloc_percpu
-#elif LINUX_VERSION_CODE < KERNEL_VERSION(3, 15, 0)
+#elif LINUX_VERSION_CODE < KERNEL_VERSION(3, 15, 0) && !defined(ISRHEL7)
 #define netdev_alloc_pcpu_stats(type)					\
 ({									\
 	typeof(type) __percpu *pcpu_stats = alloc_percpu(type);		\
@@ -153,7 +162,7 @@ static inline void *our_pskb_put(struct sk_buff *skb, struct sk_buff *tail, int
 #define pskb_put our_pskb_put
 #endif
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 11, 0)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 11, 0) && !defined(ISRHEL7)
 #include <net/xfrm.h>
 static inline void skb_scrub_packet(struct sk_buff *skb, bool xnet)
 {
@@ -175,7 +184,7 @@ static inline void skb_scrub_packet(struct sk_buff *skb, bool xnet)
 }
 #endif
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0) && !defined(ISRHEL7)
 #include <linux/random.h>
 static inline u32 prandom_u32_max(u32 ep_ro)
 {
@@ -183,7 +192,7 @@ static inline u32 prandom_u32_max(u32 ep_ro)
 }
 #endif
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 10, 75)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 10, 75) && !defined(ISRHEL7)
 #define U8_MAX ((u8)~0U)
 #define S8_MAX ((s8)(U8_MAX >> 1))
 #define S8_MIN ((s8)(-S8_MAX - 1))
@@ -198,7 +207,7 @@ static inline u32 prandom_u32_max(u32 ep_ro)
 #define S64_MIN ((s64)(-S64_MAX - 1))
 #endif
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 10, 60)
+#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)
@@ -208,7 +217,7 @@ static inline void memzero_explicit(void *s, size_t count)
 }
 #endif
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0) && !defined(ISRHEL7)
 static const struct in6_addr our_in6addr_any = IN6ADDR_ANY_INIT;
 #define in6addr_any our_in6addr_any
 #endif
@@ -267,11 +276,11 @@ static inline int get_random_bytes_wait(void *buf, int nbytes)
 }
 #endif
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 11, 0)
+#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(3, 17, 0)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0) && !defined(ISRHEL7)
 #include <linux/ktime.h>
 static inline u64 ktime_get_ns(void)
 {
@@ -339,4 +348,7 @@ static inline struct net_device *netdev_pub(void *dev)
 #define net_dbg_skb_ratelimited(fmt, skb, ...)
 #endif
 
+#if defined(ISRHEL7)
+#undef ISRHEL7
+#endif
 #endif

  reply	other threads:[~2017-06-26 19:38 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-24 15:18 wireguard
2017-06-26  8:07 ` Aaron Muir Hamilton
2017-06-26  8:19   ` wireguard
2017-06-26  9:04     ` Jason A. Donenfeld
2017-06-26  9:25       ` wireguard
2017-06-26  9:57         ` Jason A. Donenfeld
2017-06-26 10:47           ` Jason A. Donenfeld
2017-06-26 19:55             ` wireguard [this message]
2017-06-27 11:02               ` Jason A. Donenfeld
2017-06-26 20:45             ` wireguard
2017-06-27 11:05               ` Jason A. Donenfeld
2017-06-27 11:38                 ` wireguard
2017-06-27 19:23                   ` Jason A. Donenfeld
2017-06-27 19:43                     ` wireguard
2017-06-27 19:59                       ` Jason A. Donenfeld
2017-06-27 20:22                         ` Jason A. Donenfeld
2017-06-27 20:52                           ` Jason A. Donenfeld
2017-06-27 21:30                             ` wireguard
2017-06-27 22:09                               ` Jason A. Donenfeld
2017-06-27  5:35           ` Andrej Kacian
2017-06-27  7:25             ` wireguard
2017-06-27  9:39               ` Andrej Kacian
2017-06-27 11:08                 ` Jason A. Donenfeld
2018-04-05 15:08                   ` Daniel Kahn Gillmor
2018-04-05 16:15                     ` Daniel Kahn Gillmor

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