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Subject[PATCH] Monitor interface for rtl8188eu
Date
Hello,

This was previously posted as a RFC[1] to linux-wireless. Following
Larry Finger's suggestion[2] I'm resending it as a proposed patch.

This patch is intended as a debugging aid for people working on the
rtl8188eu driver. I started working on it because debug logs from
rtl8188eu driver got me nowhere when I wanted to see what was "going
in and out". It has reached a working state where you can use
TShark/Wireshark to analyze the flow of 802.11 frames:

modprobe r8188eu monitor_enable=1
ip link set mon0 up
tshark -i mon0

I've been testing it against recent staging-next (6dd19f1), in managed
mode, with hardware encryption, and only with CCMP (AES) cipher in
use, but it should work with any.

Performance implications? A throughput test ran with iperf for 20
minutes before and after the changes (with monitor inferace enabled
and up) showed:

before: 43.0 Mbits/sec
after: 41.6 Mbits/sec

[1] https://lkml.kernel.org/g/1441383439-27007-1-git-send-email-jsitnicki@gmail.com
[2] https://github.com/lwfinger/rtl8188eu/issues/73#issuecomment-138588729

Jakub Sitnicki (1):
staging: rtl8188eu: Introduce monitor interface for IEEE 802.11 frames

drivers/staging/rtl8188eu/Makefile | 1 +
drivers/staging/rtl8188eu/core/rtw_recv.c | 14 ++
drivers/staging/rtl8188eu/core/rtw_xmit.c | 4 +
drivers/staging/rtl8188eu/hal/rtl8188eu_xmit.c | 4 +
drivers/staging/rtl8188eu/include/drv_types.h | 2 +
drivers/staging/rtl8188eu/include/mon.h | 36 +++++
drivers/staging/rtl8188eu/os_dep/mon.c | 194 +++++++++++++++++++++++++
drivers/staging/rtl8188eu/os_dep/os_intfs.c | 5 +
drivers/staging/rtl8188eu/os_dep/usb_intf.c | 10 ++
9 files changed, 270 insertions(+)
create mode 100644 drivers/staging/rtl8188eu/include/mon.h
create mode 100644 drivers/staging/rtl8188eu/os_dep/mon.c

--
2.1.0



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