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Wensong Zhang，您好！
I still can not find fuction "tcp_sync_mss" in the new kernel.So I searched
the reason with google,finally I got the way: set "Prompt for development
and/or incomplete code/drivers" when config the kernel,and select "Kernel httpd
acceleration (EXPERIMENTAL)", recompile the kernel from scratch and boot the
machine with the new kernel.After the machine is rebooted, the function
"tcp_sync_mss" appeared in in file "/proc/ksyms", and my problem is also solved.
在 2003-06-29 23:04:00 您写道：
>Hi,
>
>On Sun, 29 Jun 2003, 高军 wrote:
>
>> Hello lvssu-sre！
>>
>> I use redhat linux 7.3,and upgraded the kernel to 2.4.20.Then I
>> downloaded "ktcpvs-0.0.14.tar.gz" from the official site.After unpacked it,
>> I successfully compiled it with command "make".But when I do "make install",
>> the following mistakes happened:
>>
>> rmmod ktcpvs
>> rmmod: module ktcpvs is not loaded
>> make: [install] Error 1 (ignored)
>> insmod ktcpvs.o
>> ktcpvs.o: unresolved symbol tcp_sync_mss
>> ktcpvs.o: unresolved symbol tcp_write_xmit
>> ktcpvs.o: unresolved symbol tcp_openreq_cachep
>> ktcpvs.o: unresolved symbol tcp_v4_lookup_listener
>> ktcpvs.o: unresolved symbol tcp_cwnd_application_limited
>> make: *** [install] Error 1
>>
>> Someone has already met this problem before,as I read the maillist.So
>> I do sth as Ph.D wensong guided:
>> put the new linux kernel source in the right directory:/usr/src/linux
>> boot the machine with new kernel.
>>
>> But The problem still appeared.
>> I find sth strange: In the file /proc/ksyms,function "tcp_sync_mss"
>> can not be found,but It appeared in it when I boot the machine with the
>> original kernel.So I wonder whether there is sth wrong when I upgrade the
>> kernel. I just do it like this:
>> #cd /usr/src
>> #tar xzvf linux-2.4.20.tar.gz
>> #ln -s linux-2.4.20 linux
>> #cd linux
>> #make menuconfig(do some config work)
>> #make make dep
>> #make bzImage
>> #make modules
>> #make modules_install
>> #cp arch/i386/boot/bzImage /boot/vmlinuz-2.4.20
>> #cp System.map /boot/System.map-2.4.20
>> modify the loader
>>
>> Can someone give me some suggestions why I can not find function
>> "tcp_sync_mss" which cause the ultimate problem.
>>
>
>Have you made the ktcpvs modules again after rebuilding your kernel
>source?
>
>Anyway, you can run "ksyms -a | grep tcp_sync_mss" to check if there is
>tcp_sync_mss kernel exports.
>
>Regards,
>
>Wensong
>
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regards
gaojun
gaojunaaa@xxxxxxxx
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