linux-kernel - Re: linux-next: build failure after merge of the net-next tree

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Date:   Thu, 04 Feb 2021 13:19:23 +0100
From:   Joachim Wiberg <troglobit@...il.com>
To:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Brian Vazquez <brianvv@...gle.com>
Cc:     David Miller <davem@...emloft.net>,
        Networking <netdev@...r.kernel.org>,
        Jakub Kicinski <kuba@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the net-next tree

Hi everyone,

On Thu, Feb 04, 2021 at 20:38, Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> On Wed, 3 Feb 2021 19:52:08 -0800 Brian Vazquez <brianvv@...gle.com> wrote:
>> Hi Stephen, thanks for the report. I'm having trouble trying to
>> compile for ppc, but I believe this should fix the problem, could you
>> test this patch, please? Thanks!
> That fixed it, thanks (though the patch was badly wrapped and
> whitespace damaged :-))

can confirm, that patch fixes building from latest net-next also for me.

Here's an updated version.

Regards
 /Joachim

diff --git a/include/linux/indirect_call_wrapper.h b/include/linux/indirect_call_wrapper.h
index 54c02c84906a..551e515b405b 100644
--- a/include/linux/indirect_call_wrapper.h
+++ b/include/linux/indirect_call_wrapper.h
@@ -36,6 +36,7 @@
 
 #define INDIRECT_CALLABLE_DECLARE(f)	f
 #define INDIRECT_CALLABLE_SCOPE
+#define INDIRECT_CALLABLE_EXPORT(f)    EXPORT_SYMBOL(f)
 
 #else
 #define INDIRECT_CALL_1(f, f1, ...) f(__VA_ARGS__)
@@ -44,6 +45,7 @@
 #define INDIRECT_CALL_4(f, f4, f3, f2, f1, ...) f(__VA_ARGS__)
 #define INDIRECT_CALLABLE_DECLARE(f)
 #define INDIRECT_CALLABLE_SCOPE		static
+#define INDIRECT_CALLABLE_EXPORT(f)
 #endif
 
 /*
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 9e6537709794..9dd8ff3887b7 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1206,7 +1206,7 @@ INDIRECT_CALLABLE_SCOPE struct dst_entry *ipv4_dst_check(struct dst_entry *dst,
 		return NULL;
 	return dst;
 }
-EXPORT_SYMBOL(ipv4_dst_check);
+INDIRECT_CALLABLE_EXPORT(ipv4_dst_check);
 
 static void ipv4_send_dest_unreach(struct sk_buff *skb)
 {
@@ -1337,7 +1337,7 @@ INDIRECT_CALLABLE_SCOPE unsigned int ipv4_mtu(const struct dst_entry *dst)
 
 	return mtu - lwtunnel_headroom(dst->lwtstate, mtu);
 }
-EXPORT_SYMBOL(ipv4_mtu);
+INDIRECT_CALLABLE_EXPORT(ipv4_mtu);
 
 static void ip_del_fnhe(struct fib_nh_common *nhc, __be32 daddr)
 {
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 8d9e053dc071..f0e9b07b92b7 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -2644,7 +2644,7 @@ INDIRECT_CALLABLE_SCOPE struct dst_entry *ip6_dst_check(struct dst_entry *dst,
 
 	return dst_ret;
 }
-EXPORT_SYMBOL(ip6_dst_check);
+INDIRECT_CALLABLE_EXPORT(ip6_dst_check);
 
 static struct dst_entry *ip6_negative_advice(struct dst_entry *dst)
 {
@@ -3115,7 +3115,7 @@ INDIRECT_CALLABLE_SCOPE unsigned int ip6_mtu(const struct dst_entry *dst)
 
 	return mtu - lwtunnel_headroom(dst->lwtstate, mtu);
 }
-EXPORT_SYMBOL(ip6_mtu);
+INDIRECT_CALLABLE_EXPORT(ip6_mtu);
 
 /* MTU selection:
  * 1. mtu on route is locked - use it