netdev - Re: [PATCH 11/13] udp_diag: Implement the get

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Date:	Fri, 09 Dec 2011 22:48:17 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Pavel Emelyanov <xemul@...allels.com>
Cc:	David Miller <davem@...emloft.net>,
	Linux Netdev List <netdev@...r.kernel.org>
Subject: Re: [PATCH 11/13] udp_diag: Implement the get_exact dumping
 functionality

Le vendredi 09 décembre 2011 à 20:24 +0400, Pavel Emelyanov a écrit :
> Do the same as TCP does -- lookup a socket in the given udp_table,
> check cookie, fill the reply message with existing inet socket dumping
> helper and send one back.
> 
> Signed-off-by: Pavel Emelyanov <xemul@...allels.com>

> +
> +	if (req->sdiag_family == AF_INET)
> +		sk = __udp4_lib_lookup(&init_net,
> +				req->id.idiag_src[0], req->id.idiag_sport,
> +				req->id.idiag_dst[0], req->id.idiag_dport,
> +				req->id.idiag_if, tbl);
> +	else if (req->sdiag_family == AF_INET6)
> +		sk = __udp6_lib_lookup(&init_net,
> +				(struct in6_addr *)req->id.idiag_src,
> +				req->id.idiag_sport,
> +				(struct in6_addr *)req->id.idiag_dst,
> +				req->id.idiag_dport,
> +				req->id.idiag_if, tbl);
> +	else

OK, but what happens if IPv6 is a module ?

  LD      .tmp_vmlinux1
net/built-in.o: In function `udp_dump_one':
udp_diag.c:(.text+0xa2b40): undefined reference to `__udp6_lib_lookup'
make: *** [.tmp_vmlinux1] Erreur 1


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