Date: Mon, 24 Feb 2025 15:52:14 +0800 From: Zhenlei Huang <zlei@FreeBSD.org> To: Ian FREISLICH <ianfreislich@gmail.com> Cc: FreeBSD Current <current@freebsd.org>, Gleb Smirnoff <glebius@FreeBSD.org>, Mark Johnston <markj@freebsd.org> Subject: Re: buildkernel failure in net/toeplitz.c (commit 3b281d1421a78b588c5fc4182009ce62d8823d95) Message-ID: <BBC8025F-1005-482E-9022-B0BCD9BF0530@FreeBSD.org> In-Reply-To: <4858aa49-f102-49fc-90c7-9bd7480306c9@gmail.com>
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> On Feb 24, 2025, at 12:42 PM, Ian FREISLICH <ianfreislich@gmail.com> wrote:
>
> Hi
>
> Building a kernel today failed with:
>
> -Werror /usr/src/sys/net/toeplitz.c
> In file included from /usr/src/sys/net/toeplitz.c:29:
> In file included from /usr/src/sys/net/rss_config.h:33:
> /usr/src/sys/netinet/in.h:692:23: error: call to undeclared function 'htonl'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
> 692 | return (in.s_addr == htonl(INADDR_BROADCAST) ||
> | ^
> In file included from /usr/src/sys/net/toeplitz.c:32:
> In file included from /usr/src/sys/sys/systm.h:98:
> /usr/src/sys/sys/param.h:343:13: error: conflicting types for 'htonl'
> 343 | __uint32_t htonl(__uint32_t);
> | ^
> /usr/src/sys/netinet/in.h:692:23: note: previous implicit declaration is here
> 692 | return (in.s_addr == htonl(INADDR_BROADCAST) ||
>
> I think this is a result of changes to netinet/in.h (3b281d1421a78) which added a static inline function using ntohl() which is not defined in kernel use.
>
> Ian
>
May you please have a try with this patch ?
```
diff --git a/sys/netinet/in.h b/sys/netinet/in.h
index 0925e3aa7669..4dad4e4fed4d 100644
--- a/sys/netinet/in.h
+++ b/sys/netinet/in.h
@@ -689,8 +689,8 @@ void in_ifdetach(struct ifnet *);
static inline bool
in_broadcast(struct in_addr in)
{
- return (in.s_addr == htonl(INADDR_BROADCAST) ||
- in.s_addr == htonl(INADDR_ANY));
+ return (in.s_addr == INADDR_BROADCAST ||
+ in.s_addr == INADDR_ANY);
}
```
The `htonl` is pointless here, as INADDR_BROADCAST is all 1s, and INADDR_ANY is all 0s.
Best regards,
Zhenlei
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