Frame Injection with NL80211_CMD_FRAME is failing (SOLVED)
Hi all,
I found the problem. There is a check in /net/mac80211/cfg.c
!rcu_access_pointer(sdata->bss->beacon))
I guess this related to beaconing. If it is not configured, off-channel is required in any case.
If you put the interface into AP mode and try to send frames with NL80211_CMD_FRAME you have to set the OFFCHANNEL_TX_OK flag in any case !!!
Right now I am facing the problem of not getting probe-requests delivered to my master mode interface through NL80211_CMD_REGISTER_FRAME. It works only if I start an additional monitor interface on the same card. Any clue what to do to enable frame delivery to the AP interface without a monitor interface.
Kind Regards,
Hakan
Am 03.10.14 12:04 schrieb "Hakan Coşkun" unter <[email protected]>:
Quoted 27 lines
Hi,
For some time I am playing around with tools like scapy, senf, lorcon etc. Which allow to receive and construct frames in user-space and send them with
pcap or raw sockets. I am trying to achieve the injection part withNL80211_CMD_FRAME. According to the description, only management frames are
supported by this command. Am I right ?I put some printks into
nl80211.candmlme.cto follow the transmission part
and to understand where my commands are failing.
I¹ve put my interface into master mode (NL80211_IFTYPE_AP) in order pass the
checks in cfg80211. When I try to send down a beacon frame or another management frame I got an error fromcfg80211_mlme_mgmt_txinmlme.c.rdev_mgmt_txreturns an error code. How can I figure out why my frame is not
send down on the wiphy ?By the way, why is
CMD_FRAMEonly restricted to management frames ?Regards,
Hakan