The problem of driver of rtl8187 wireless card

The problem of driver of rtl8187 wireless card

[gu gu]

Dear Sir,
     Rencently,I do a job to transplant a wireless wifi-card connected by the USB,which was designed baseing the chip rtl8187 for ARM board.But in the process i have some trouble in writing the driver programe.
     My linux kernel is Version-2.6.25.10,It is true that the kernel have the driver for the chip rtl8187 .When I connected the wifi card through the USB port ,the kernel can recoganize the card "Manufacturer_Realtek_RTL8187",So it's sure that the driver of RTL8187 is no problem.But when I ping it to the AP,the missing of datapackets and the delay are both terrible.and more , there is nothing accepted by the wireless router when i typed the "ping".
so i think there is some bug exist in the driver for RTL8187 of kernel ,isn't it? (ps: I have set several parameter,such essid ,IP address...) 
  So I download a "compat-wireless-2.6-old" packet.following the " Readme",i added the KLIB & KLIB_BUILD in the Makefile and "make" it.It is well to generate  some modules with the typing".o"! but has not compiled the file rtl8187 or generated a "rtl8187.o". 
and so i wanna to know how to solve this problem. i need some help from u,
Thank you for your attention!

Gu  C.L.


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Re: The problem of driver of rtl8187 wireless card

[Hin-Tak Leung]

2009/7/29 gu gu <guatsheng@yahoo.com.cn>:
>
> Dear Sir,
>     Rencently,I do a job to transplant a wireless wifi-card connected by the USB,which was designed baseing the chip rtl8187 for ARM board.But in the process i have some trouble in writing the driver programe.
>     My linux kernel is Version-2.6.25.10,It is true that the kernel have the driver for the chip rtl8187 .When I connected the wifi card through the USB port ,the kernel can recoganize the card "Manufacturer_Realtek_RTL8187",So it's sure that the driver of RTL8187 is no problem.But when I ping it to the AP,the missing of datapackets and the delay are both terrible.and more , there is nothing accepted by the wireless router when i typed the "ping".
> so i think there is some bug exist in the driver for RTL8187 of kernel ,isn't it? (ps: I have set several parameter,such essid ,IP address...)
>  So I download a "compat-wireless-2.6-old" packet.following the " Readme",i added the KLIB & KLIB_BUILD in the Makefile and "make" it.It is well to generate  some modules with the typing".o"! but has not compiled the file rtl8187 or generated a "rtl8187.o".
> and so i wanna to know how to solve this problem. i need some help from u,
> Thank you for your attention!

yes, the rtl8187 driver earlier than 26.28/29 were a bit buggy. You
should use compat-wireless, and 2.6 kernel modules are named *.ko. You
should have a rtl8187.ko, and you need a few others (4-5 in total) as
well. There were a reorg and rtl818x now has its own directory,
compared to earlier kernel tree.

Re: The problem of driver of rtl8187 wireless card

[Hin-Tak Leung]

2009/7/30 gu gu <guatsheng@yahoo.com.cn>:
> Hi!
> Thank you for your reply.
>   Because I have an ARM board which run linux -v2.6.25.10,so I have to use  "compat-wireless-2.6-old.tar.bz2" packet to generate the "rtl8187.ko" .But the real problem is that I can't make it to get  "rtl8187.ko"(modules).And you say need other modules, So which modules I  needed?And how can I do?
>   The directory "compat-wireless-2.6-old/drivers/net/wireless" has no
>  driver of rtl8187,So I send the compiled packet for you in Accessory.I think something wrong in it ,I just set the values of KLIB & KLIB_BUILD in Makefile.How do that?
>
>  Could you tell me how to resolve it ,thank you!Looking forward
> from you .

Hmm,  you only have 18 modules, not the 50+ it should be. You also
make a mistake with your editing of the Makefile. (I think it is
common ettique to check for problems from self-inflicted issues like
that). I think compat-wireless won't build any modules your tree have
them built-in (because if you can't unload  the old one, there is no
point building new), so you *must* set your KBUILD/KLIB correctly, if
you choose to edit the makefile by hand. if you read the Makefile (as
you should, since you edited it), it mostly just do
        $(MAKE) -C $(KLIB_BUILD) M=$(PWD) modules
recursively down the directory. You could do "make -C <someplace>
M=<here> rtl8187.ko" inside drivers/net/wireless/ and see if a
rtl8187.ko .
but first, correct your editing of the Makefile.