On Tue, Sep 4, 2012 at 11:20 AM, David Miller <davem@xxxxxxxxxxxxx> wrote:
> From: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
> Date: Tue, 4 Sep 2012 16:58:53 +1000
>
>> net/built-in.o: In function `tcp_fastopen_ctx_free':
>> tcp_fastopen.c:(.text+0x5cc5c): undefined reference to `crypto_destroy_tfm'
>> net/built-in.o: In function `tcp_fastopen_reset_cipher':
>> (.text+0x5cccc): undefined reference to `crypto_alloc_base'
>> net/built-in.o: In function `tcp_fastopen_reset_cipher':
>> (.text+0x5cd6c): undefined reference to `crypto_destroy_tfm'
>>
>> Presumably caused by commit 104671636897 ("tcp: TCP Fast Open Server -
>> header & support functions") from the net-next tree. I assume that some
>> dependency on the CRYPTO infrastructure is missing.
>
> Thanks for the report, I've pushed the following change to net-next
> which should address this:
>
> --------------------
> [PATCH] net: Add INET dependency on aes crypto for the sake of TCP fastopen.
>
> Stephen Rothwell says:
>
> ====================
> After merging the final tree, today's linux-next build (powerpc
> ppc44x_defconfig) failed like this:
>
> net/built-in.o: In function `tcp_fastopen_ctx_free':
> tcp_fastopen.c:(.text+0x5cc5c): undefined reference to `crypto_destroy_tfm'
> net/built-in.o: In function `tcp_fastopen_reset_cipher':
> (.text+0x5cccc): undefined reference to `crypto_alloc_base'
> net/built-in.o: In function `tcp_fastopen_reset_cipher':
> (.text+0x5cd6c): undefined reference to `crypto_destroy_tfm'
>
> Presumably caused by commit 104671636897 ("tcp: TCP Fast Open Server -
> header & support functions") from the net-next tree. I assume that some
> dependency on the CRYPTO infrastructure is missing.
>
> I have reverted commit 1bed966cc3bd ("Merge branch
> 'tcp_fastopen_server'") for today.
> ====================
>
> Reported-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
> ---
> net/Kconfig | 2 ++
> 1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/net/Kconfig b/net/Kconfig
> index 245831b..30b48f5 100644
> --- a/net/Kconfig
> +++ b/net/Kconfig
> @@ -52,6 +52,8 @@ source "net/iucv/Kconfig"
>
> config INET
> bool "TCP/IP networking"
> + select CRYPTO
> + select CRYPTO_AES
> ---help---
> These are the protocols used on the Internet and on most local
> Ethernets. It is highly recommended to say Y here (this will enlarge
> --
> 1.7.7.6
>
Thanks for fixing this, David. (Sorry for missing the dependency.)
Jerry
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