Hi Julius, On 26.02.19 10:40, Julius Niedworok wrote:
In order to force delivery of TX status frames for research and debugging purposes, implement the IFF_ECHO flag for ieee80211 devices. When this flag is set for a specific interface, IEEE80211_TX_CTL_REQ_TX_STATUS is enabled in all packets sent from that interface. IFF_ECHO can be set via /sys/class/net/<dev>/flags. The default is disabled.
(..)
+ /* + * Force TX status frames on ieee80211 devices. + * Since IFF_ECHO is used by CAN devices for a different + * purpose, we must check dev->ieee80211_ptr. + */
The reason for IFF_ECHO was, that the data frame which is sent onto the wire (by one application) is not visible to all the other applications on the same (local) host. Therefore a successful transmission on the wire triggers the 'echo' of the sent content into the local host.
So what are you getting back after you enabled IFF_ECHO on your mac80211 device?
Is it just a 'status' about a sent packet, or is it the packet ('full content') itself?
Regards, Oliver
